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Merge branch 'master' into docking

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# Conflicts:
#	imgui.cpp
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ocornut 2020-06-11 11:36:38 +02:00
commit 2665288b30
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19
docs/CHANGELOG.txt
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@ -125,10 +125,19 @@ Other Changes:
BeginMenu()/EndMenu() or BeginPopup/EndPopup(). (#3223, #1207) [@rokups]
- Drag and Drop: Fixed unintended fallback "..." tooltip display during drag operation when
drag source uses _SourceNoPreviewTooltip flags. (#3160) [@rokups]
- ImDrawList: Fixed an issue when draw command merging or cancelling while crossing the VtxOffset
boundary would lead to draw command being emitted with wrong VtxOffset value. (#3129, #3163, #3232)
- ImDrawList: Fixed an issue where draw command merging or primitive unreserve while crossing the
VtxOffset boundary would lead to draw commands with wrong VtxOffset. (#3129, #3163, #3232, #2591)
[@thedmd, @Shironekoben, @sergeyn, @ocornut]
- ImDrawList, ImDrawListSplitter, Columns: Fixed an issue where changing channels with different
TextureId, VtxOffset would incorrectly apply new settings to draw channels. (#3129, #3163)
[@ocornut, @thedmd, @Shironekoben]
- ImDrawList, ImDrawListSplitter, Columns: Fixed an issue where starting a split when current
VtxOffset was not zero would lead to draw commands with wrong VtxOffset. (#2591)
- ImDrawList, ImDrawListSplitter, Columns: Fixed an issue where starting a split right after
a callback draw command would incorrectly override the callback draw command.
- Misc, Freetype: Fix for rare case where FT_Get_Char_Index() succeed but FT_Load_Glyph() fails.
- Docs: Improved and moved font documentation to docs/FONTS.md so it can be readable on the web.
Updated various links/wiki accordingly. Added FAQ entry about DPI. (#2861) [@ButternCream, @ocornut]
- CI: Added CI test to verify we're never accidentally dragging libstdc++ (on some compiler setups,
static constructors for non-pod data seems to drag in libstdc++ due to thread-safety concerns).
Fixed a static contructor which led to this dependency on some compiler setups (unclear which).
@ -624,11 +633,11 @@ Other Changes:
- Log/Capture: Fixed BeginTabItem() label not being included in a text log/capture.
- ImDrawList: Added ImDrawCmd::VtxOffset value to support large meshes (64k+ vertices) using 16-bit indices.
The renderer back-end needs to set 'io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset' to enable
this, and honor the ImDrawCmd::VtxOffset field. Otherwise the value will always be zero.
this, and honor the ImDrawCmd::VtxOffset field. Otherwise the value will always be zero. (#2591)
This has the advantage of preserving smaller index buffers and allowing to execute on hardware that do not
support 32-bit indices. Most examples back-ends have been modified to support the VtxOffset field.
- ImDrawList: Added ImDrawCmd::IdxOffset value, equivalent to summing element count for each draw command.
This is provided for convenience and consistency with VtxOffset.
This is provided for convenience and consistency with VtxOffset. (#2591)
- ImDrawCallback: Allow to override the signature of ImDrawCallback by #define-ing it. This is meant to
facilitate custom rendering back-ends passing local render-specific data to the draw callback.
- ImFontAtlas: FreeType: Added RasterizerFlags::Monochrome flag to disable font anti-aliasing. Combine
@ -640,7 +649,7 @@ Other Changes:
dealing with Win32, and to facilitate integration in custom engines. (#2546) [@andrewwillmott]
- Backends: OSX: imgui_impl_osx: Added mouse cursor support. (#2585, #1873) [@actboy168]
- Examples/Backends: DirectX9/10/11/12, Metal, Vulkan, OpenGL3 (Desktop GL only): Added support for large meshes
(64k+ vertices) with 16-bit indices, enable 'ImGuiBackendFlags_RendererHasVtxOffset' in those back-ends.
(64k+ vertices) with 16-bit indices, enable 'ImGuiBackendFlags_RendererHasVtxOffset' in those back-ends. (#2591)
- Examples/Backends: Don't filter characters under 0x10000 before calling io.AddInputCharacter(),
the filtering is done in io.AddInputCharacter() itself. This is in prevision for fuller Unicode
support. (#2538, #2541)

45
docs/FAQ.md
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@ -20,6 +20,7 @@ or view this file with any Markdown viewer.
| [How can I use this on a machine without mouse, keyboard or screen? (input share, remote display)](#q-how-can-i-use-this-on-a-machine-without-mouse-keyboard-or-screen-input-share-remote-display) |
| [I integrated Dear ImGui in my engine and the text or lines are blurry..](#q-i-integrated-dear-imgui-in-my-engine-and-the-text-or-lines-are-blurry) |
| [I integrated Dear ImGui in my engine and some elements are clipping or disappearing when I move windows around..](#q-i-integrated-dear-imgui-in-my-engine-and-some-elements-are-clipping-or-disappearing-when-i-move-windows-around) |
| [I integrated Dear ImGui in my engine and some elements are displaying outside their expected windows boundaries..](#q-i-integrated-dear-imgui-in-my-engine-and-some-elements-are-displaying-outside-their-expected-windows-boundaries)
| **Q&A: Usage** |
| **[Why are multiple widgets reacting when I interact with a single one?<br>How can I have multiple widgets with the same label or with an empty label?](#q-why-are-multiple-widgets-reacting-when-i-interact-with-a-single-one-q-how-can-i-have-multiple-widgets-with-the-same-label-or-with-an-empty-label)** |
| [How can I display an image? What is ImTextureID, how does it work?](#q-how-can-i-display-an-image-what-is-imtextureid-how-does-it-work)|
@ -27,6 +28,7 @@ or view this file with any Markdown viewer.
| [How can I interact with standard C++ types (such as std::string and std::vector)?](#q-how-can-i-interact-with-standard-c-types-such-as-stdstring-and-stdvector) |
| [How can I display custom shapes? (using low-level ImDrawList API)](#q-how-can-i-display-custom-shapes-using-low-level-imdrawlist-api) |
| **Q&A: Fonts, Text** |
| [How should I handle DPI in my application?](#q-how-should-i-handle-dpi-in-my-application) |
| [How can I load a different font than the default?](#q-how-can-i-load-a-different-font-than-the-default) |
| [How can I easily use icons in my application?](#q-how-can-i-easily-use-icons-in-my-application) |
| [How can I load multiple fonts?](#q-how-can-i-load-multiple-fonts) |
@ -77,6 +79,9 @@ You may use the [docking](https://github.com/ocornut/imgui/tree/docking) branch
Many projects are using this branch and it is kept in sync with master regularly.
You may merge in the [tables](https://github.com/ocornut/imgui/tree/tables) branch which includes:
- [Table features](https://github.com/ocornut/imgui/issues/2957)
##### [Return to Index](#index)
----
@ -143,11 +148,14 @@ Also make sure your orthographic projection matrix and io.DisplaySize matches yo
---
### Q: I integrated Dear ImGui in my engine and some elements are clipping or disappearing when I move windows around..
### Q: I integrated Dear ImGui in my engine and some elements are displaying outside their expected windows boundaries..
You are probably mishandling the clipping rectangles in your render function.
Rectangles provided by ImGui are defined as
Each draw command needs the triangle rendered using the clipping rectangle provided in the ImDrawCmd structure (`ImDrawCmd->CllipRect`).
Rectangles provided by Dear ImGui are defined as
`(x1=left,y1=top,x2=right,y2=bottom)`
and **NOT** as
`(x1,y1,width,height)`
Refer to rendering back-ends in the [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder for references of how to handle the `ClipRect` field.
##### [Return to Index](#index)
@ -441,10 +449,33 @@ ImGui::End();
# Q&A: Fonts, Text
### Q: How should I handle DPI in my application?
The short answer is: obtain the desired DPI scale, load a suitable font resized with that scale (always round down font size to nearest integer), and scale your Style structure accordingly using `style.ScaleAllSizes()`.
Your application may want to detect DPI change and reload the font and reset style being frames.
Your ui code should avoid using hardcoded constants for size and positioning. Prefer to express values as multiple of reference values such as `ImGui::GetFontSize()` or `ImGui::GetFrameHeight()`. So e.g. instead of seeing a hardcoded height of 500 for a given item/window, you may want to use `30*ImGui::GetFontSize()` instead.
Down the line Dear ImGui will provide a variety of standardized reference values to facilitate using this.
Applications in the `examples/` folder are not DPI aware partly because they are unable to load a custom font from the file-system (may change that in the future).
The reason DPI is not auto-magically solved in stock examples is that we don't yet have a satisfying solution for the "multi-dpi" problem (using the `docking` branch: when multiple viewport windows are over multiple monitors using different DPI scale). The current way to handle this on the application side is:
- Create and maintain one font atlas per active DPI scale (e.g. by iterating `platform_io.Monitors[]` before `NewFrame()`).
- Hook `platform_io.OnChangedViewport()` to detect when a `Begin()` call makes a Dear ImGui window change monitor (and therefore DPI).
- In the hook: swap atlas, swap style with correctly sized one, remap the current font from one atlas to the other (may need to maintain a remapping table of your fonts at variying DPI scale).
This approach is relatively easy and functional but come with two issues:
- It's not possibly to reliably size or position a window ahead of `Begin()` without knowing on which monitor it'll land.
- Style override may be lost during the `Begin()` call crossing monitor boundaries. You may need to do some custom scaling mumbo-jumbo if you want your `OnChangedViewport()` handler to preserve style overrides.
Please note that if you are not using multi-viewports with multi-monitors using different DPI scale, you can ignore all of this and use the simpler technique recommended at the top.
### Q: How can I load a different font than the default?
Use the font atlas to load the TTF/OTF file you want:
```c
```cpp
ImGuiIO& io = ImGui::GetIO();
io.Fonts->AddFontFromFileTTF("myfontfile.ttf", size_in_pixels);
io.Fonts->GetTexDataAsRGBA32() or GetTexDataAsAlpha8()
@ -454,12 +485,12 @@ Default is ProggyClean.ttf, monospace, rendered at size 13, embedded in dear img
(Tip: monospace fonts are convenient because they allow to facilitate horizontal alignment directly at the string level.)
(Read the [docs/FONTS.txt](https://github.com/ocornut/imgui/blob/master/docs/FONTS.txt) file for more details about font loading.)
(Read the [docs/FONTS.md](https://github.com/ocornut/imgui/blob/master/docs/FONTS.md) file for more details about font loading.)
New programmers: remember that in C/C++ and most programming languages if you want to use a
backslash \ within a string literal, you need to write it double backslash "\\":
```c
```cpp
io.Fonts->AddFontFromFileTTF("MyFolder\MyFont.ttf", size); // WRONG (you are escaping the M here!)
io.Fonts->AddFontFromFileTTF("MyFolder\\MyFont.ttf", size; // CORRECT
io.Fonts->AddFontFromFileTTF("MyFolder/MyFont.ttf", size); // ALSO CORRECT
@ -473,9 +504,9 @@ io.Fonts->AddFontFromFileTTF("MyFolder/MyFont.ttf", size); // ALSO CORRECT
The most convenient and practical way is to merge an icon font such as FontAwesome inside you
main font. Then you can refer to icons within your strings.
You may want to see `ImFontConfig::GlyphMinAdvanceX` to make your icon look monospace to facilitate alignment.
(Read the [docs/FONTS.txt](https://github.com/ocornut/imgui/blob/master/docs/FONTS.txt) file for more details about icons font loading.)
(Read the [docs/FONTS.md](https://github.com/ocornut/imgui/blob/master/docs/FONTS.md) file for more details about icons font loading.)
With some extra effort, you may use colorful icon by registering custom rectangle space inside the font atlas,
and copying your own graphics data into it. See docs/FONTS.txt about using the AddCustomRectFontGlyph API.
and copying your own graphics data into it. See docs/FONTS.md about using the AddCustomRectFontGlyph API.
##### [Return to Index](#index)
@ -483,7 +514,7 @@ and copying your own graphics data into it. See docs/FONTS.txt about using the A
### Q: How can I load multiple fonts?
Use the font atlas to pack them into a single texture:
(Read the [docs/FONTS.txt](https://github.com/ocornut/imgui/blob/master/docs/FONTS.txt) file and the code in ImFontAtlas for more details.)
(Read the [docs/FONTS.md](https://github.com/ocornut/imgui/blob/master/docs/FONTS.md) file and the code in ImFontAtlas for more details.)
```cpp
ImGuiIO& io = ImGui::GetIO();

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docs/FONTS.md Normal file
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@ -0,0 +1,389 @@
## Dear ImGui: Using Fonts
(You may browse this document at https://github.com/ocornut/imgui/blob/master/docs/FONTS.md or view this file with any Markdown viewer.)
The code in imgui.cpp embeds a copy of 'ProggyClean.ttf' (by Tristan Grimmer),
a 13 pixels high, pixel-perfect font used by default. We embed it in the source code so you can use Dear ImGui without any file system access. ProggyClean does not scale smoothly, therefore it is recommended that you load your own file when using Dear ImGui in an application aiming to look nice and wanting to support multiple resolutions.
You may also load external .TTF/.OTF files.
In the [misc/fonts/](https://github.com/ocornut/imgui/tree/master/misc/fonts) folder you can find a few suggested fonts, provided as a convenience.
**Read the FAQ:** https://www.dearimgui.org/faq (there is a Fonts section!)
**Use the Discord server**: http://discord.dearimgui.org and not the GitHub issue tracker for basic font loading questions.
## Index
- [Readme First](#readme-first)
- [How should I handle DPI in my application?](#how-should-i-handle-dpi-in-my-application)
- [Fonts Loading Instructions](#font-loading-instructions)
- [Using Icons](#using-icons)
- [Using FreeType Rasterizer](#using-freetype-rasterizer)
- [Using Custom Glyph Ranges](#using-custom-glyph-ranges)
- [Using Custom Colorful Icons](#using-custom-colorful-icons)
- [Using Font Data Embedded In Source Code](#using-font-data-embedded-in-source-code)
- [About filenames](#about-filenames)
- [Credits/Licenses For Fonts Included In Repository](#creditslicenses-for-fonts-included-in-repository)
- [Font Links](#font-links)
---------------------------------------
## Readme First
- All loaded fonts glyphs are rendered into a single texture atlas ahead of time. Calling either of `io.Fonts->GetTexDataAsAlpha8()`, `io.Fonts->GetTexDataAsRGBA32()` or `io.Fonts->Build()` will build the atlas.
- You can use the style editor `ImGui::ShowStyleEditor()` in the "Fonts" section to browse your fonts and understand what's going on if you have an issue. You can also reach it in `Demo->Tools->Style Editor->Fonts`:
![imgui_capture_0008](https://user-images.githubusercontent.com/8225057/84162822-1a731f00-aa71-11ea-9b6b-89c2332aa161.png)
- Make sure your font ranges data are persistent (available during the calls to `GetTexDataAsAlpha8()`/`GetTexDataAsRGBA32()/`Build()`.
- Use C++11 u8"my text" syntax to encode literal strings as UTF-8. e.g.:
```cpp
u8"hello"
u8"こんにちは" // this will be encoded as UTF-8
```
##### [Return to Index](#index)
## How should I handle DPI in my application?
See [FAQ entry](https://github.com/ocornut/imgui/blob/master/docs/FAQ.md#q-how-should-i-handle-dpi-in-my-application).
##### [Return to Index](#index)
## Font Loading Instructions
**Load default font:**
```cpp
ImGuiIO& io = ImGui::GetIO();
io.Fonts->AddFontDefault();
```
**Load .TTF/.OTF file with:**
```cpp
ImGuiIO& io = ImGui::GetIO();
io.Fonts->AddFontFromFileTTF("font.ttf", size_pixels);
```
If you get an assert stating "Could not load font file!", your font filename is likely incorrect. Read "[About filenames](#about-filenames)" carefully.
**Load multiple fonts:**
```cpp
ImGuiIO& io = ImGui::GetIO();
ImFont* font1 = io.Fonts->AddFontFromFileTTF("font.ttf", size_pixels);
ImFont* font2 = io.Fonts->AddFontFromFileTTF("anotherfont.otf", size_pixels);
// Select font at runtime
ImGui::Text("Hello"); // use the default font (which is the first loaded font)
ImGui::PushFont(font2);
ImGui::Text("Hello with another font");
ImGui::PopFont();
```
**For advanced options create a ImFontConfig structure and pass it to the AddFont() function (it will be copied internally):**
```cpp
ImFontConfig config;
config.OversampleH = 2;
config.OversampleV = 1;
config.GlyphExtraSpacing.x = 1.0f;
ImFont* font = io.Fonts->AddFontFromFileTTF("font.ttf", size_pixels, &config);
```
**Combine multiple fonts into one:**
```cpp
// Load a first font
ImFont* font = io.Fonts->AddFontDefault();
// Add character ranges and merge into the previous font
// The ranges array is not copied by the AddFont* functions and is used lazily
// so ensure it is available at the time of building or calling GetTexDataAsRGBA32().
static const ImWchar icons_ranges[] = { 0xf000, 0xf3ff, 0 }; // Will not be copied by AddFont* so keep in scope.
ImFontConfig config;
config.MergeMode = true;
io.Fonts->AddFontFromFileTTF("DroidSans.ttf", 18.0f, &config, io.Fonts->GetGlyphRangesJapanese()); // Merge into first font
io.Fonts->AddFontFromFileTTF("fontawesome-webfont.ttf", 18.0f, &config, icons_ranges); // Merge into first font
io.Fonts->Build();
```
**Add a fourth parameter to bake specific font ranges only:**
```cpp
// Basic Latin, Extended Latin
io.Fonts->AddFontFromFileTTF("font.ttf", size_pixels, NULL, io.Fonts->GetGlyphRangesDefault());
// Default + Selection of 2500 Ideographs used by Simplified Chinese
io.Fonts->AddFontFromFileTTF("font.ttf", size_pixels, NULL, io.Fonts->GetGlyphRangesChineseSimplifiedCommon());
// Default + Hiragana, Katakana, Half-Width, Selection of 1946 Ideographs
io.Fonts->AddFontFromFileTTF("font.ttf", size_pixels, NULL, io.Fonts->GetGlyphRangesJapanese());
```
See [Using Custom Glyph Ranges](#using-custom-glyph-ranges) section to create your own ranges.
**Example loading and using a Japanese font:**
```cpp
ImGuiIO& io = ImGui::GetIO();
io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
```
```cpp
ImGui::Text(u8"こんにちは！テスト %d", 123);
if (ImGui::Button(u8"ロード"))
{
// do stuff
}
ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
```
![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
**Offset font vertically by altering the `io.Font->DisplayOffset` value:**
```cpp
ImFont* font = io.Fonts->AddFontFromFileTTF("font.ttf", size_pixels);
font->DisplayOffset.y = 1; // Render 1 pixel down
```
**Font Atlas too large?**
- If you have very large number of glyphs or multiple fonts, the texture may become too big for your graphics API. The typical result of failing to upload a texture is if every glyphs appears as white rectangles.
- In particular, using a large range such as `GetGlyphRangesChineseSimplifiedCommon()` is not recommended unless you set `OversampleH`/`OversampleV` to 1 and use a small font size.
- Mind the fact that some graphics drivers have texture size limitation.
- If you are building a PC application, mind the fact that your users may use hardware with lower limitations than yours.
Some solutions:
1. Reduce glyphs ranges by calculating them from source localization data.
You can use the `ImFontGlyphRangesBuilder` for this purpose, this will be the biggest win!
2. You may reduce oversampling, e.g. `font_config.OversampleH = font_config.OversampleV = 1`, this will largely reduce your texture size.
3. Set `io.Fonts.TexDesiredWidth` to specify a texture width to minimize texture height (see comment in `ImFontAtlas::Build()` function).
4. Set `io.Fonts.Flags |= ImFontAtlasFlags_NoPowerOfTwoHeight;` to disable rounding the texture height to the next power of two.
5. Read about oversampling [here](https://github.com/nothings/stb/blob/master/tests/oversample).
##### [Return to Index](#index)
## Using Icons
Using an icon font (such as [FontAwesome](http://fontawesome.io) or [OpenFontIcons](https://github.com/traverseda/OpenFontIcons)) is an easy and practical way to use icons in your Dear ImGui application.
A common pattern is to merge the icon font within your main font, so you can embed icons directly from your strings without having to change fonts back and forth.
To refer to the icon UTF-8 codepoints from your C++ code, you may use those headers files created by Juliette Foucaut: https://github.com/juliettef/IconFontCppHeaders.
So you can use `ICON_FA_SEARCH` as a string that will render as a "Search" icon.
Example Setup:
```cpp
// Merge icons into default tool font
#include "IconsFontAwesome.h"
ImGuiIO& io = ImGui::GetIO();
io.Fonts->AddFontDefault();
ImFontConfig config;
config.MergeMode = true;
config.GlyphMinAdvanceX = 13.0f; // Use if you want to make the icon monospaced
static const ImWchar icon_ranges[] = { ICON_MIN_FA, ICON_MAX_FA, 0 };
io.Fonts->AddFontFromFileTTF("fonts/fontawesome-webfont.ttf", 13.0f, &config, icon_ranges);
```
Example Usage:
```cpp
// Usage, e.g.
ImGui::Text("%s among %d items", ICON_FA_SEARCH, count);
ImGui::Button(ICON_FA_SEARCH " Search");
// C string _literals_ can be concatenated at compilation time, e.g. "hello" " world"
// ICON_FA_SEARCH is defined as a string literal so this is the same as "A" "B" becoming "AB"
```
See Links below for other icons fonts and related tools.
Here's an application using icons ("Avoyd", https://www.avoyd.com):
![avoyd](https://user-images.githubusercontent.com/8225057/81696852-c15d9e80-9464-11ea-9cab-2a4d4fc84396.jpg)
##### [Return to Index](#index)
## Using FreeType Rasterizer
- Dear ImGui uses imstb\_truetype.h to rasterize fonts (with optional oversampling). This technique and its implementation are not ideal for fonts rendered at small sizes, which may appear a little blurry or hard to read.
- There is an implementation of the ImFontAtlas builder using FreeType that you can use in the [misc/freetype/](https://github.com/ocornut/imgui/tree/master/misc/freetype) folder.
- FreeType supports auto-hinting which tends to improve the readability of small fonts.
- Read documentation in the [misc/freetype/](https://github.com/ocornut/imgui/tree/master/misc/freetype) folder.
- Correct sRGB space blending will have an important effect on your font rendering quality.
##### [Return to Index](#index)
## Using Custom Glyph Ranges
You can use the `ImFontGlyphRangesBuilder` helper to create glyph ranges based on text input. For example: for a game where your script is known, if you can feed your entire script to it and only build the characters the game needs.
```cpp
ImVector<ImWchar> ranges;
ImFontGlyphRangesBuilder builder;
builder.AddText("Hello world"); // Add a string (here "Hello world" contains 7 unique characters)
builder.AddChar(0x7262); // Add a specific character
builder.AddRanges(io.Fonts->GetGlyphRangesJapanese()); // Add one of the default ranges
builder.BuildRanges(&ranges); // Build the final result (ordered ranges with all the unique characters submitted)
io.Fonts->AddFontFromFileTTF("myfontfile.ttf", size_in_pixels, NULL, ranges.Data);
io.Fonts->Build(); // Build the atlas while 'ranges' is still in scope and not deleted.
```
##### [Return to Index](#index)
## Using Custom Colorful Icons
**(This is a BETA api, use if you are familiar with dear imgui and with your rendering back-end)**
- You can use the `ImFontAtlas::AddCustomRect()` and `ImFontAtlas::AddCustomRectFontGlyph()` api to register rectangles that will be packed into the font atlas texture. Register them before building the atlas, then call Build()`.
- You can then use `ImFontAtlas::GetCustomRectByIndex(int)` to query the position/size of your rectangle within the texture, and blit/copy any graphics data of your choice into those rectangles.
- This API is beta because it is likely to change in order to support multi-dpi (multiple viewports on multiple monitors with varying DPI scale).
#### Pseudo-code:
```cpp
// Add font, then register two custom 13x13 rectangles mapped to glyph 'a' and 'b' of this font
ImFont* font = io.Fonts->AddFontDefault();
int rect_ids[2];
rect_ids[0] = io.Fonts->AddCustomRectFontGlyph(font, 'a', 13, 13, 13+1);
rect_ids[1] = io.Fonts->AddCustomRectFontGlyph(font, 'b', 13, 13, 13+1);
// Build atlas
io.Fonts->Build();
// Retrieve texture in RGBA format
unsigned char* tex_pixels = NULL;
int tex_width, tex_height;
io.Fonts->GetTexDataAsRGBA32(&tex_pixels, &tex_width, &tex_height);
for (int rect_n = 0; rect_n < IM_ARRAYSIZE(rect_ids); rect_n++)
{
int rect_id = rects_ids[rect_n];
if (const ImFontAtlas::CustomRect* rect = io.Fonts->GetCustomRectByIndex(rect_id))
{
// Fill the custom rectangle with red pixels (in reality you would draw/copy your bitmap data here!)
for (int y = 0; y < rect->Height; y++)
{
ImU32* p = (ImU32*)tex_pixels + (rect->Y + y) * tex_width + (rect->X);
for (int x = rect->Width; x > 0; x--)
*p++ = IM_COL32(255, 0, 0, 255);
}
}
}
```
##### [Return to Index](#index)
## Using Font Data Embedded In Source Code
- Compile and use [binary_to_compressed_c.cpp](https://github.com/ocornut/imgui/blob/master/misc/fonts/binary_to_compressed_c.cpp) to create a compressed C style array that you can embed in source code.
- See the documentation in [binary_to_compressed_c.cpp](https://github.com/ocornut/imgui/blob/master/misc/fonts/binary_to_compressed_c.cpp) for instruction on how to use the tool.
- You may find a precompiled version binary_to_compressed_c.exe for Windows instead of demo binaries package (see [README](https://github.com/ocornut/imgui/blob/master/docs/README.md)).
- The tool can optionally output Base85 encoding to reduce the size of _source code_ but the read-only arrays in the actual binary will be about 20% bigger.
Then load the font with:
```cpp
ImFont* font = io.Fonts->AddFontFromMemoryCompressedTTF(compressed_data, compressed_data_size, size_pixels, ...);
```
or
```cpp
ImFont* font = io.Fonts->AddFontFromMemoryCompressedBase85TTF(compressed_data_base85, size_pixels, ...);
```
##### [Return to Index](#index)
## About filenames
**Please note that many new C/C++ users have issues their files _because the filename they provide is wrong_.**
Two things to watch for:
- Make sure your IDE/debugger settings starts your executable from the right working directory. In Visual Studio you can change your working directory in project `Properties > General > Debugging > Working Directory`. People assume that their execution will start from the root folder of the project, where by default it oftens start from the folder where object or executable files are stored.
```cpp
// Relative filename depends on your Working Directory when running your program!
io.Fonts->AddFontFromFileTTF("MyImage01.jpg", ...);
// Load from the parent folder of your Working Directory
io.Fonts->AddFontFromFileTTF("../MyImage01.jpg", ...);
```
- In C/C++ and most programming languages if you want to use a backslash `\` within a string literal, you need to write it double backslash `\\`. At it happens, Windows uses backslashes as a path separator, so be mindful.
```cpp
io.Fonts->AddFontFromFileTTF("MyFiles\MyImage01.jpg", ...); // This is INCORRECT!!
io.Fonts->AddFontFromFileTTF("MyFiles\\MyImage01.jpg", ...); // This is CORRECT
```
In some situations, you may also use `/` path separator under Windows.
##### [Return to Index](#index)
## Credits/Licenses For Fonts Included In Repository
Some fonts files are available in the `misc/fonts/` folder:
```
Roboto-Medium.ttf
Apache License 2.0
by Christian Robetson
https://fonts.google.com/specimen/Roboto
Cousine-Regular.ttf
by Steve Matteson
Digitized data copyright (c) 2010 Google Corporation.
Licensed under the SIL Open Font License, Version 1.1
https://fonts.google.com/specimen/Cousine
DroidSans.ttf
Copyright (c) Steve Matteson
Apache License, version 2.0
https://www.fontsquirrel.com/fonts/droid-sans
ProggyClean.ttf
Copyright (c) 2004, 2005 Tristan Grimmer
MIT License
recommended loading setting: Size = 13.0, DisplayOffset.Y = +1
http://www.proggyfonts.net/
ProggyTiny.ttf
Copyright (c) 2004, 2005 Tristan Grimmer
MIT License
recommended loading setting: Size = 10.0, DisplayOffset.Y = +1
http://www.proggyfonts.net/
Karla-Regular.ttf
Copyright (c) 2012, Jonathan Pinhorn
SIL OPEN FONT LICENSE Version 1.1
```
##### [Return to Index](#index)
## Font Links
#### ICON FONTS
- C/C++ header for icon fonts (#define with code points to use in source code string literals) https://github.com/juliettef/IconFontCppHeaders
- FontAwesome https://fortawesome.github.io/Font-Awesome
- OpenFontIcons https://github.com/traverseda/OpenFontIcons
- Google Icon Fonts https://design.google.com/icons/
- Kenney Icon Font (Game Controller Icons) https://github.com/nicodinh/kenney-icon-font
- IcoMoon - Custom Icon font builder https://icomoon.io/app
#### REGULAR FONTS
- Google Noto Fonts (worldwide languages) https://www.google.com/get/noto/
- Open Sans Fonts https://fonts.google.com/specimen/Open+Sans
- (Japanese) M+ fonts by Coji Morishita http://mplus-fonts.sourceforge.jp/mplus-outline-fonts/index-en.html
#### MONOSPACE FONTS
Pixel Perfect:
- Proggy Fonts, by Tristan Grimmer http://www.proggyfonts.net or http://upperbounds.net
- Sweet16, Sweet16 Mono, by Martin Sedlak (Latin + Supplemental + Extended A) https://github.com/kmar/Sweet16Font (also include an .inl file to use directly in dear imgui.)
Regular:
- Google Noto Mono Fonts https://www.google.com/get/noto/
- Typefaces for source code beautification https://github.com/chrissimpkins/codeface
- Programmation fonts http://s9w.github.io/font_compare/
- Inconsolata http://www.levien.com/type/myfonts/inconsolata.html
- Adobe Source Code Pro: Monospaced font family for ui & coding environments https://github.com/adobe-fonts/source-code-pro
- Monospace/Fixed Width Programmer's Fonts http://www.lowing.org/fonts/
Or use Arial Unicode or other Unicode fonts provided with Windows for full characters coverage (not sure of their licensing).
##### [Return to Index](#index)

376
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View File

@ -1,376 +0,0 @@
dear imgui
FONTS DOCUMENTATION
Also read https://www.dearimgui.org/faq for more fonts related infos.
The code in imgui.cpp embeds a copy of 'ProggyClean.ttf' (by Tristan Grimmer),
a 13 pixels high, pixel-perfect font used by default.
We embed it font in source code so you can use Dear ImGui without any file system access.
You may also load external .TTF/.OTF files.
The files in this folder are suggested fonts, provided as a convenience.
Please read the FAQ: https://www.dearimgui.org/faq
Please use the Discord server: http://discord.dearimgui.org and not the Github issue tracker for basic font loading questions.
---------------------------------------
INDEX:
---------------------------------------
- Readme First / FAQ
- Fonts Loading Instructions
- Using Icons
- Using FreeType rasterizer
- Building Custom Glyph Ranges
- Using custom colorful icons
- Embedding Fonts in Source Code
- Credits/Licences for fonts included in repository
- Fonts Links
---------------------------------------
README FIRST / FAQ
---------------------------------------
- You can use the style editor ImGui::ShowStyleEditor() in the "Fonts" section to browse your fonts
and understand what's going on if you have an issue.
- Fonts are rasterized in a single texture at the time of calling either of io.Fonts->GetTexDataAsAlpha8()/GetTexDataAsRGBA32()/Build().
- Make sure your font ranges data are persistent and available at the time the font atlas is being built.
- Use C++11 u8"my text" syntax to encode literal strings as UTF-8. e.g.:
u8"hello"
u8"こんにちは" // this will be encoded as UTF-8
- If you want to include a backslash \ character in your string literal, you need to double them e.g. "folder\\filename".
Read FAQ for details.
---------------------------------------
FONTS LOADING INSTRUCTIONS
---------------------------------------
Load default font:
ImGuiIO& io = ImGui::GetIO();
io.Fonts->AddFontDefault();
Load .TTF/.OTF file with:
ImGuiIO& io = ImGui::GetIO();
io.Fonts->AddFontFromFileTTF("font.ttf", size_pixels);
Load multiple fonts:
ImGuiIO& io = ImGui::GetIO();
ImFont* font1 = io.Fonts->AddFontFromFileTTF("font.ttf", size_pixels);
ImFont* font2 = io.Fonts->AddFontFromFileTTF("anotherfont.otf", size_pixels);
// Select font at runtime
ImGui::Text("Hello"); // use the default font (which is the first loaded font)
ImGui::PushFont(font2);
ImGui::Text("Hello with another font");
ImGui::PopFont();
For advanced options create a ImFontConfig structure and pass it to the AddFont function (it will be copied internally):
ImFontConfig config;
config.OversampleH = 2;
config.OversampleV = 1;
config.GlyphExtraSpacing.x = 1.0f;
ImFont* font = io.Fonts->AddFontFromFileTTF("font.ttf", size_pixels, &config);
Combine two fonts into one:
// Load a first font
ImFont* font = io.Fonts->AddFontDefault();
// Add character ranges and merge into the previous font
// The ranges array is not copied by the AddFont* functions and is used lazily
// so ensure it is available at the time of building or calling GetTexDataAsRGBA32().
static const ImWchar icons_ranges[] = { 0xf000, 0xf3ff, 0 }; // Will not be copied by AddFont* so keep in scope.
ImFontConfig config;
config.MergeMode = true;
io.Fonts->AddFontFromFileTTF("DroidSans.ttf", 18.0f, &config, io.Fonts->GetGlyphRangesJapanese());
io.Fonts->AddFontFromFileTTF("fontawesome-webfont.ttf", 18.0f, &config, icons_ranges);
io.Fonts->Build();
Font atlas is too large?
- If you have very large number of glyphs or multiple fonts, the texture may become too big for your graphics API.
- The typical result of failing to upload a texture is if every glyphs appears as white rectangles.
- In particular, using a large range such as GetGlyphRangesChineseSimplifiedCommon() is not recommended
unless you set OversampleH/OversampleV to 1 and use a small font size.
- Mind the fact that some graphics drivers have texture size limitation.
- If you are building a PC application, mind the fact that users may run on hardware with lower specs than yours.
Some solutions:
- 1) Reduce glyphs ranges by calculating them from source localization data.
You can use ImFontGlyphRangesBuilder for this purpose, this will be the biggest win!
- 2) You may reduce oversampling, e.g. config.OversampleH = config.OversampleV = 1, this will largely reduce your texture size.
- 3) Set io.Fonts.TexDesiredWidth to specify a texture width to minimize texture height (see comment in ImFontAtlas::Build function).
- 4) Set io.Fonts.Flags |= ImFontAtlasFlags_NoPowerOfTwoHeight; to disable rounding the texture height to the next power of two.
- Read about oversampling here: https://github.com/nothings/stb/blob/master/tests/oversample
Add a fourth parameter to bake specific font ranges only:
// Basic Latin, Extended Latin
io.Fonts->AddFontFromFileTTF("font.ttf", size_pixels, NULL, io.Fonts->GetGlyphRangesDefault());
// Default + Selection of 2500 Ideographs used by Simplified Chinese
io.Fonts->AddFontFromFileTTF("font.ttf", size_pixels, NULL, io.Fonts->GetGlyphRangesChineseSimplifiedCommon());
// Default + Hiragana, Katakana, Half-Width, Selection of 1946 Ideographs
io.Fonts->AddFontFromFileTTF("font.ttf", size_pixels, NULL, io.Fonts->GetGlyphRangesJapanese());
See "BUILDING CUSTOM GLYPH RANGES" section to create your own ranges.
Offset font vertically by altering the io.Font->DisplayOffset value:
ImFont* font = io.Fonts->AddFontFromFileTTF("font.ttf", size_pixels);
font->DisplayOffset.y = 1; // Render 1 pixel down
---------------------------------------
USING ICONS
---------------------------------------
Using an icon font (such as FontAwesome: http://fontawesome.io or OpenFontIcons. https://github.com/traverseda/OpenFontIcons)
is an easy and practical way to use icons in your Dear ImGui application.
A common pattern is to merge the icon font within your main font, so you can embed icons directly from your strings without
having to change fonts back and forth.
To refer to the icon UTF-8 codepoints from your C++ code, you may use those headers files created by Juliette Foucaut:
https://github.com/juliettef/IconFontCppHeaders
Those files contains a bunch of named #define which you can use to refer to specific icons of the font, e.g.:
#define ICON_FA_MUSIC "\xef\x80\x81"
#define ICON_FA_SEARCH "\xef\x80\x82"
Example Setup:
// Merge icons into default tool font
#include "IconsFontAwesome.h"
ImGuiIO& io = ImGui::GetIO();
io.Fonts->AddFontDefault();
ImFontConfig config;
config.MergeMode = true;
config.GlyphMinAdvanceX = 13.0f; // Use if you want to make the icon monospaced
static const ImWchar icon_ranges[] = { ICON_MIN_FA, ICON_MAX_FA, 0 };
io.Fonts->AddFontFromFileTTF("fonts/fontawesome-webfont.ttf", 13.0f, &config, icon_ranges);
Example Usage:
// Usage, e.g.
ImGui::Text("%s among %d items", ICON_FA_SEARCH, count);
ImGui::Button(ICON_FA_SEARCH " Search");
Important to understand: C string _literals_ can be concatenated at compilation time, e.g. "hello" " world"
ICON_FA_SEARCH is defined as a string literal so this is the same as "A" "B" becoming "AB"
See Links below for other icons fonts and related tools.
---------------------------------------
FREETYPE RASTERIZER, SMALL FONT SIZES
---------------------------------------
Dear ImGui uses imstb_truetype.h to rasterize fonts (with optional oversampling).
This technique and its implementation are not ideal for fonts rendered at _small sizes_, which may appear a
little blurry or hard to read.
There is an implementation of the ImFontAtlas builder using FreeType that you can use in the misc/freetype/ folder.
FreeType supports auto-hinting which tends to improve the readability of small fonts.
Note that this code currently creates textures that are unoptimally too large (could be fixed with some work).
Also note that correct sRGB space blending will have an important effect on your font rendering quality.
---------------------------------------
BUILDING CUSTOM GLYPH RANGES
---------------------------------------
You can use the ImFontGlyphRangesBuilder helper to create glyph ranges based on text input.
For example: for a game where your script is known, if you can feed your entire script to it and only build the characters the game needs.
ImVector<ImWchar> ranges;
ImFontGlyphRangesBuilder builder;
builder.AddText("Hello world"); // Add a string (here "Hello world" contains 7 unique characters)
builder.AddChar(0x7262); // Add a specific character
builder.AddRanges(io.Fonts->GetGlyphRangesJapanese()); // Add one of the default ranges
builder.BuildRanges(&ranges); // Build the final result (ordered ranges with all the unique characters submitted)
io.Fonts->AddFontFromFileTTF("myfontfile.ttf", size_in_pixels, NULL, ranges.Data);
io.Fonts->Build(); // Build the atlas while 'ranges' is still in scope and not deleted.
---------------------------------------
USING CUSTOM COLORFUL ICONS
---------------------------------------
(This is a BETA api, use if you are familiar with dear imgui and with your rendering back-end)
You can use the ImFontAtlas::AddCustomRect() and ImFontAtlas::AddCustomRectFontGlyph() api to register rectangles
that will be packed into the font atlas texture. Register them before building the atlas, then call Build().
You can then use ImFontAtlas::GetCustomRectByIndex(int) to query the position/size of your rectangle within the
texture, and blit/copy any graphics data of your choice into those rectangles.
Pseudo-code:
// Add font, then register two custom 13x13 rectangles mapped to glyph 'a' and 'b' of this font
ImFont* font = io.Fonts->AddFontDefault();
int rect_ids[2];
rect_ids[0] = io.Fonts->AddCustomRectFontGlyph(font, 'a', 13, 13, 13+1);
rect_ids[1] = io.Fonts->AddCustomRectFontGlyph(font, 'b', 13, 13, 13+1);
// Build atlas
io.Fonts->Build();
// Retrieve texture in RGBA format
unsigned char* tex_pixels = NULL;
int tex_width, tex_height;
io.Fonts->GetTexDataAsRGBA32(&tex_pixels, &tex_width, &tex_height);
for (int rect_n = 0; rect_n < IM_ARRAYSIZE(rect_ids); rect_n++)
{
int rect_id = rects_ids[rect_n];
if (const ImFontAtlas::CustomRect* rect = io.Fonts->GetCustomRectByIndex(rect_id))
{
// Fill the custom rectangle with red pixels (in reality you would draw/copy your bitmap data here!)
for (int y = 0; y < rect->Height; y++)
{
ImU32* p = (ImU32*)tex_pixels + (rect->Y + y) * tex_width + (rect->X);
for (int x = rect->Width; x > 0; x--)
*p++ = IM_COL32(255, 0, 0, 255);
}
}
}
---------------------------------------
EMBEDDING FONTS IN SOURCE CODE
---------------------------------------
Compile and use 'binary_to_compressed_c.cpp' to create a compressed C style array that you can embed in source code.
See the documentation in binary_to_compressed_c.cpp for instruction on how to use the tool.
You may find a precompiled version binary_to_compressed_c.exe for Windows instead of demo binaries package (see README).
The tool can optionally output Base85 encoding to reduce the size of _source code_ but the read-only arrays in the
actual binary will be about 20% bigger.
Then load the font with:
ImFont* font = io.Fonts->AddFontFromMemoryCompressedTTF(compressed_data, compressed_data_size, size_pixels, ...);
or:
ImFont* font = io.Fonts->AddFontFromMemoryCompressedBase85TTF(compressed_data_base85, size_pixels, ...);
---------------------------------------
CREDITS/LICENSES FOR FONTS INCLUDED IN REPOSITORY
---------------------------------------
Some fonts are available in the misc/fonts/ folder:
Roboto-Medium.ttf
Apache License 2.0
by Christian Robertson
https://fonts.google.com/specimen/Roboto
Cousine-Regular.ttf
by Steve Matteson
Digitized data copyright (c) 2010 Google Corporation.
Licensed under the SIL Open Font License, Version 1.1
https://fonts.google.com/specimen/Cousine
DroidSans.ttf
Copyright (c) Steve Matteson
Apache License, version 2.0
https://www.fontsquirrel.com/fonts/droid-sans
ProggyClean.ttf
Copyright (c) 2004, 2005 Tristan Grimmer
MIT License
recommended loading setting: Size = 13.0, DisplayOffset.Y = +1
http://www.proggyfonts.net/
ProggyTiny.ttf
Copyright (c) 2004, 2005 Tristan Grimmer
MIT License
recommended loading setting: Size = 10.0, DisplayOffset.Y = +1
http://www.proggyfonts.net/
Karla-Regular.ttf
Copyright (c) 2012, Jonathan Pinhorn
SIL OPEN FONT LICENSE Version 1.1
---------------------------------------
FONTS LINKS
---------------------------------------
ICON FONTS
C/C++ header for icon fonts (#define with code points to use in source code string literals)
https://github.com/juliettef/IconFontCppHeaders
FontAwesome
https://fortawesome.github.io/Font-Awesome
OpenFontIcons
https://github.com/traverseda/OpenFontIcons
Google Icon Fonts
https://design.google.com/icons/
Kenney Icon Font (Game Controller Icons)
https://github.com/nicodinh/kenney-icon-font
IcoMoon - Custom Icon font builder
https://icomoon.io/app
REGULAR FONTS
Google Noto Fonts (worldwide languages)
https://www.google.com/get/noto/
Open Sans Fonts
https://fonts.google.com/specimen/Open+Sans
(Japanese) M+ fonts by Coji Morishita are free
http://mplus-fonts.sourceforge.jp/mplus-outline-fonts/index-en.html
MONOSPACE FONTS (PIXEL PERFECT)
Proggy Fonts, by Tristan Grimmer
http://www.proggyfonts.net or http://upperbounds.net
Sweet16, Sweet16 Mono, by Martin Sedlak (Latin + Supplemental + Extended A)
https://github.com/kmar/Sweet16Font
Also include .inl file to use directly in dear imgui.
MONOSPACE FONTS (REGULAR)
Google Noto Mono Fonts
https://www.google.com/get/noto/
Typefaces for source code beautification
https://github.com/chrissimpkins/codeface
Programmation fonts
http://s9w.github.io/font_compare/
Inconsolata
http://www.levien.com/type/myfonts/inconsolata.html
Adobe Source Code Pro: Monospaced font family for user interface and coding environments
https://github.com/adobe-fonts/source-code-pro
Monospace/Fixed Width Programmer's Fonts
http://www.lowing.org/fonts/
Or use Arial Unicode or other Unicode fonts provided with Windows for full characters coverage (not sure of their licensing).

29
docs/README.md
View File

@ -5,7 +5,7 @@ Dear ImGui
<sub>(This library is available under a free and permissive license, but needs financial support to sustain its continued improvements. In addition to maintenance and stability there are many desirable features yet to be added. If your company is using Dear ImGui, please consider reaching out.)</sub>
Businesses: support continued development via invoiced technical support, maintenance, sponsoring contracts:
<br>&nbsp;&nbsp;_E-mail: contact @ dearimgui dot org_
<br>&nbsp;&nbsp;_E-mail: contact @ dearimgui dot com_
Individuals: support continued maintenance and development with [PayPal](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=WGHNC6MBFLZ2S).
@ -99,7 +99,7 @@ Calling the `ImGui::ShowDemoWindow()` function will create a demo window showcas
You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
- [imgui-demo-binaries-20190715.zip](http://www.dearimgui.org/binaries/imgui-demo-binaries-20200412.zip) (Windows binaries, 1.76, built 2020/04/12, master branch) or [older demo binaries](http://www.dearimgui.org/binaries).
The demo applications are not DPI aware so expect some blurriness on a 4K screen. For DPI awareness in your application, you can load/reload your font at different scale, and scale your style with `style.ScaleAllSizes()`.
The demo applications are not DPI aware so expect some blurriness on a 4K screen. For DPI awareness in your application, you can load/reload your font at different scale, and scale your style with `style.ScaleAllSizes()` (see [FAQ](https://www.dearimgui.org/faq)).
### Integration
@ -122,11 +122,11 @@ Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
### Upcoming Changes
Some of the goals for 2020 are:
- Finish work on docking, tabs. (see [#2109](https://github.com/ocornut/imgui/issues/2109), in public [docking](https://github.com/ocornut/imgui/tree/docking) branch looking for feedback)
- Finish work on multiple viewports / multiple OS windows. (see [#1542](https://github.com/ocornut/imgui/issues/1542), in public [docking](https://github.com/ocornut/imgui/tree/docking) branch looking for feedback)
- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
- Finish work on new Tables API (to replace Columns). (see [#2957](https://github.com/ocornut/imgui/issues/2957))
- Add an automation and testing system, both to test the library and end-user apps. (see [#435](https://github.com/ocornut/imgui/issues/435))
- Work on docking. (see [#2109](https://github.com/ocornut/imgui/issues/2109), in public [docking](https://github.com/ocornut/imgui/tree/docking) branch)
- Work on multiple viewports / multiple OS windows. (see [#1542](https://github.com/ocornut/imgui/issues/1542), in public [docking](https://github.com/ocornut/imgui/tree/docking) branch looking for feedback)
- Work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
- Work on new Tables API (to replace Columns). (see [#2957](https://github.com/ocornut/imgui/issues/2957))
- Work on automation and testing system, both to test the library and end-user apps. (see [#435](https://github.com/ocornut/imgui/issues/435))
- Make the examples look better, improve styles, improve font support, make the examples hi-DPI and multi-DPI aware.
### Gallery
@ -154,7 +154,7 @@ If you are new to Dear ImGui and have issues with: compiling, linking, adding fo
Otherwise, for any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues. Please read and fill the New Issue template carefully.
Paid private support is available for business customers (E-mail: _contact @ dearimgui dot org_).
Private support is available for paying business customers (E-mail: _contact @ dearimgui dot com_).
**Which version should I get?**
@ -174,14 +174,14 @@ How to help
- You may participate in the [Discord server](http://discord.dearimgui.org), [GitHub forum/issues](https://github.com/ocornut/imgui/issues).
- You may help with development and submit pull requests! Please understand that by submitting a PR you are also submitting a request for the maintainer to review your code and then take over its maintenance forever. PR should be crafted both in the interest in the end-users and also to ease the maintainer into understanding and accepting it.
- See [Help wanted](https://github.com/ocornut/imgui/wiki/Help-Wanted) on the [Wiki](https://github.com/ocornut/imgui/wiki/) for some more ideas.
- Have your company financially support this project.
- Have your company financially support this project (please reach by e-mail)
**How can I help financing further development of Dear ImGui?**
Your contributions are keeping this project alive. The library is available under a free and permissive license, but continued maintenance and development are a full-time endeavor and I would like to grow the team. In addition to maintenance and stability there are many desirable features yet to be added. If your company is using Dear ImGui, please consider reaching out for invoiced technical support and maintenance contracts. Thank you!
Businesses: support continued development via invoiced technical support, maintenance, sponsoring contracts:
<br>&nbsp;&nbsp;_E-mail: contact @ dearimgui dot org_
<br>&nbsp;&nbsp;_E-mail: contact @ dearimgui.com_
Individuals: support continued maintenance and development with [PayPal](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=WGHNC6MBFLZ2S).
@ -194,7 +194,7 @@ Ongoing Dear ImGui development is financially supported by users and private spo
- [Blizzard](https://careers.blizzard.com/en-us/openings/engineering/all/all/all/1), [Google](https://github.com/google/filament), [Nvidia](https://developer.nvidia.com/nvidia-omniverse), [Ubisoft](https://montreal.ubisoft.com/en/ubisoft-sponsors-user-interface-library-for-c-dear-imgui/)
*Double-chocolate and Salty caramel sponsors*
- [Activision](https://careers.activision.com/c/programmingsoftware-engineering-jobs), [Arkane Studios](https://www.arkane-studios.com), [Dotemu](http://www.dotemu.com), [Framefield](http://framefield.com), [Hexagon](https://hexagonxalt.com/the-technology/xalt-visualization), [Kylotonn](https://www.kylotonn.com), [Media Molecule](http://www.mediamolecule.com), [Mesh Consultants](https://www.meshconsultants.ca), [Mobigame](http://www.mobigame.net), [Nadeo](https://www.nadeo.com), [Next Level Games](https://www.nextlevelgames.com), [Supercell](http://www.supercell.com), [Remedy Entertainment](https://www.remedygames.com/), [Unit 2 Games](https://unit2games.com/)
- [Activision](https://careers.activision.com/c/programmingsoftware-engineering-jobs), [Arkane Studios](https://www.arkane-studios.com), [Dotemu](http://www.dotemu.com), [Framefield](http://framefield.com), [Hexagon](https://hexagonxalt.com/the-technology/xalt-visualization), [Kylotonn](https://www.kylotonn.com), [Media Molecule](http://www.mediamolecule.com), [Mesh Consultants](https://www.meshconsultants.ca), [Mobigame](http://www.mobigame.net), [Nadeo](https://www.nadeo.com), [Next Level Games](https://www.nextlevelgames.com), [RAD Game Tools](http://www.radgametools.com/), [Supercell](http://www.supercell.com), [Remedy Entertainment](https://www.remedygames.com/), [Unit 2 Games](https://unit2games.com/)
From November 2014 to December 2019, ongoing development has also been financially supported by its users on Patreon and through individual donations. Please see [detailed list of Dear ImGui supporters](https://github.com/ocornut/imgui/wiki/Sponsors).
@ -208,9 +208,12 @@ Dear ImGui is using software and services provided free of charge for open sourc
Credits
-------
Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com) (PS Vita).
Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect [contributors](https://github.com/ocornut/imgui/graphs/contributors) to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com) (PS Vita).
I first discovered the IMGUI paradigm at [Q-Games](http://www.q-games.com) where Atman Binstock had dropped his own simple implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating and improving it.
Recurring contributors (2020): Omar Cornut [@ocornut](https://github.com/ocornut), Rokas Kupstys [@rokups](https://github.com/rokups), Ben Carter [@ShironekoBen](https://github.com/ShironekoBen).
A large portion of work on automation systems, regression tests and other features are currently unpublished.
"I first discovered the IMGUI paradigm at [Q-Games](http://www.q-games.com) where Atman Binstock had dropped his own simple implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating and improving it."
Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).

2
examples/example_allegro5/main.cpp
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@ -41,7 +41,7 @@ int main(int, char**)
// - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
// - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
// - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
// - Read 'docs/FONTS.txt' for more instructions and details.
// - Read 'docs/FONTS.md' for more instructions and details.
// - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
//io.Fonts->AddFontDefault();
//io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);

2
examples/example_emscripten/main.cpp
View File

@ -82,7 +82,7 @@ int main(int, char**)
// - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
// - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
// - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
// - Read 'docs/FONTS.txt' for more instructions and details.
// - Read 'docs/FONTS.md' for more instructions and details.
// - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
// - Emscripten allows preloading a file or folder to be accessible at runtime. See Makefile for details.
//io.Fonts->AddFontDefault();

2
examples/example_glfw_opengl2/main.cpp
View File

@ -71,7 +71,7 @@ int main(int, char**)
// - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
// - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
// - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
// - Read 'docs/FONTS.txt' for more instructions and details.
// - Read 'docs/FONTS.md' for more instructions and details.
// - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
//io.Fonts->AddFontDefault();
//io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);

2
examples/example_glfw_opengl3/main.cpp
View File

@ -131,7 +131,7 @@ int main(int, char**)
// - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
// - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
// - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
// - Read 'docs/FONTS.txt' for more instructions and details.
// - Read 'docs/FONTS.md' for more instructions and details.
// - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
//io.Fonts->AddFontDefault();
//io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);

2
examples/example_glfw_vulkan/main.cpp
View File

@ -413,7 +413,7 @@ int main(int, char**)
// - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
// - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
// - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
// - Read 'docs/FONTS.txt' for more instructions and details.
// - Read 'docs/FONTS.md' for more instructions and details.
// - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
//io.Fonts->AddFontDefault();
//io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);

2
examples/example_glut_opengl2/main.cpp
View File

@ -126,7 +126,7 @@ int main(int argc, char** argv)
// - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
// - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
// - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
// - Read 'docs/FONTS.txt' for more instructions and details.
// - Read 'docs/FONTS.md' for more instructions and details.
// - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
//io.Fonts->AddFontDefault();
//io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);

2
examples/example_marmalade/main.cpp
View File

@ -35,7 +35,7 @@ int main(int, char**)
// - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
// - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
// - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
// - Read 'docs/FONTS.txt' for more instructions and details.
// - Read 'docs/FONTS.md' for more instructions and details.
// - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
//io.Fonts->AddFontDefault();
//io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);

2
examples/example_sdl_directx11/main.cpp
View File

@ -81,7 +81,7 @@ int main(int, char**)
// - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
// - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
// - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
// - Read 'docs/FONTS.txt' for more instructions and details.
// - Read 'docs/FONTS.md' for more instructions and details.
// - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
//io.Fonts->AddFontDefault();
//io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);

2
examples/example_sdl_opengl2/main.cpp
View File

@ -69,7 +69,7 @@ int main(int, char**)
// - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
// - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
// - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
// - Read 'docs/FONTS.txt' for more instructions and details.
// - Read 'docs/FONTS.md' for more instructions and details.
// - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
//io.Fonts->AddFontDefault();
//io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);

2
examples/example_sdl_opengl3/main.cpp
View File

@ -126,7 +126,7 @@ int main(int, char**)
// - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
// - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
// - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
// - Read 'docs/FONTS.txt' for more instructions and details.
// - Read 'docs/FONTS.md' for more instructions and details.
// - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
//io.Fonts->AddFontDefault();
//io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);

2
examples/example_sdl_vulkan/main.cpp
View File

@ -397,7 +397,7 @@ int main(int, char**)
// - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
// - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
// - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
// - Read 'docs/FONTS.txt' for more instructions and details.
// - Read 'docs/FONTS.md' for more instructions and details.
// - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
//io.Fonts->AddFontDefault();
//io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);

2
examples/example_win32_directx10/main.cpp
View File

@ -76,7 +76,7 @@ int main(int, char**)
// - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
// - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
// - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
// - Read 'docs/FONTS.txt' for more instructions and details.
// - Read 'docs/FONTS.md' for more instructions and details.
// - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
//io.Fonts->AddFontDefault();
//io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);

2
examples/example_win32_directx11/main.cpp
View File

@ -83,7 +83,7 @@ int main(int, char**)
// - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
// - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
// - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
// - Read 'docs/FONTS.txt' for more instructions and details.
// - Read 'docs/FONTS.md' for more instructions and details.
// - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
//io.Fonts->AddFontDefault();
//io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);

2
examples/example_win32_directx12/main.cpp
View File

@ -108,7 +108,7 @@ int main(int, char**)
// - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
// - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
// - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
// - Read 'docs/FONTS.txt' for more instructions and details.
// - Read 'docs/FONTS.md' for more instructions and details.
// - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
//io.Fonts->AddFontDefault();
//io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);

2
examples/example_win32_directx9/main.cpp
View File

@ -74,7 +74,7 @@ int main(int, char**)
// - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
// - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
// - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
// - Read 'docs/FONTS.txt' for more instructions and details.
// - Read 'docs/FONTS.md' for more instructions and details.
// - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
//io.Fonts->AddFontDefault();
//io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);

31
imgui.cpp
View File

@ -644,7 +644,8 @@ CODE
Q: How can I use this without a mouse, without a keyboard or without a screen? (gamepad, input share, remote display)
Q: I integrated Dear ImGui in my engine and the text or lines are blurry..
Q: I integrated Dear ImGui in my engine and some elements are clipping or disappearing when I move windows around..
>> See https://www.dearimgui.org/faq
Q: I integrated Dear ImGui in my engine and some elements are displaying outside their expected windows boundaries..
>> See https://www.dearimgui.org/faq
Q&A: Usage
----------
@ -776,11 +777,12 @@ CODE
Q&A: Fonts, Text
================
Q: How should I handle DPI in my application?
Q: How can I load a different font than the default?
Q: How can I easily use icons in my application?
Q: How can I load multiple fonts?
Q: How can I display and input non-Latin characters such as Chinese, Japanese, Korean, Cyrillic?
>> See https://www.dearimgui.org/faq and docs/FONTS.txt
>> See https://www.dearimgui.org/faq and https://github.com/ocornut/imgui/edit/master/docs/FONTS.md
Q&A: Concerns
=============
@ -1034,7 +1036,7 @@ ImGuiStyle::ImGuiStyle()
{
Alpha = 1.0f; // Global alpha applies to everything in ImGui
WindowPadding = ImVec2(8,8); // Padding within a window
WindowRounding = 7.0f; // Radius of window corners rounding. Set to 0.0f to have rectangular windows
WindowRounding = 7.0f; // Radius of window corners rounding. Set to 0.0f to have rectangular windows. Large values tend to lead to variety of artifacts and are not recommended.
WindowBorderSize = 1.0f; // Thickness of border around windows. Generally set to 0.0f or 1.0f. Other values not well tested.
WindowMinSize = ImVec2(32,32); // Minimum window size
WindowTitleAlign = ImVec2(0.0f,0.5f);// Alignment for title bar text
@ -3046,7 +3048,7 @@ void ImGui::GcCompactTransientWindowBuffers(ImGuiWindow* window)
window->MemoryDrawListIdxCapacity = window->DrawList->IdxBuffer.Capacity;
window->MemoryDrawListVtxCapacity = window->DrawList->VtxBuffer.Capacity;
window->IDStack.clear();
window->DrawList->ClearFreeMemory();
window->DrawList->_ClearFreeMemory();
window->DC.ChildWindows.clear();
window->DC.ItemFlagsStack.clear();
window->DC.ItemWidthStack.clear();
@ -3432,7 +3434,7 @@ static ImDrawList* GetViewportDrawList(ImGuiViewportP* viewport, size_t drawlist
// Our ImDrawList system requires that there is always a command
if (viewport->LastFrameDrawLists[drawlist_no] != g.FrameCount)
{
draw_list->ResetForNewFrame();
draw_list->_ResetForNewFrame();
draw_list->PushTextureID(g.IO.Fonts->TexID);
draw_list->PushClipRect(viewport->Pos, viewport->Pos + viewport->Size, false);
viewport->LastFrameDrawLists[drawlist_no] = g.FrameCount;
@ -4287,18 +4289,12 @@ static void AddWindowToSortBuffer(ImVector<ImGuiWindow*>* out_sorted_windows, Im
static void AddDrawListToDrawData(ImVector<ImDrawList*>* out_list, ImDrawList* draw_list)
{
// Remove trailing command if unused.
// Technically we could return directly instead of popping, but this make things looks neat in Metrics window as well.
draw_list->_PopUnusedDrawCmd();
if (draw_list->CmdBuffer.Size == 0)
return;
// Remove trailing command if unused
ImDrawCmd* curr_cmd = &draw_list->CmdBuffer.back();
if (curr_cmd->ElemCount == 0 && curr_cmd->UserCallback == NULL)
{
draw_list->CmdBuffer.pop_back();
if (draw_list->CmdBuffer.Size == 0)
return;
}
// Draw list sanity check. Detect mismatch between PrimReserve() calls and incrementing _VtxCurrentIdx, _VtxWritePtr etc.
// May trigger for you if you are using PrimXXX functions incorrectly.
IM_ASSERT(draw_list->VtxBuffer.Size == 0 || draw_list->_VtxWritePtr == draw_list->VtxBuffer.Data + draw_list->VtxBuffer.Size);
@ -6311,11 +6307,16 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
window->Pos = ImFloor(window->Pos);
// Lock window rounding for the frame (so that altering them doesn't cause inconsistencies)
// Large values tend to lead to variety of artifacts and are not recommended.
if (window->ViewportOwned || window->DockIsActive)
window->WindowRounding = 0.0f;
else
window->WindowRounding = (flags & ImGuiWindowFlags_ChildWindow) ? style.ChildRounding : ((flags & ImGuiWindowFlags_Popup) && !(flags & ImGuiWindowFlags_Modal)) ? style.PopupRounding : style.WindowRounding;
// For windows with title bar or menu bar, we clamp to FrameHeight(FontSize + FramePadding.y * 2.0f) to completely hide artifacts.
//if ((window->Flags & ImGuiWindowFlags_MenuBar) || !(window->Flags & ImGuiWindowFlags_NoTitleBar))
// window->WindowRounding = ImMin(window->WindowRounding, g.FontSize + style.FramePadding.y * 2.0f);
// Apply window focus (new and reactivated windows are moved to front)
bool want_focus = false;
if (window_just_activated_by_user && !(flags & ImGuiWindowFlags_NoFocusOnAppearing))
@ -6435,7 +6436,7 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
// DRAWING
// Setup draw list and outer clipping rectangle
window->DrawList->ResetForNewFrame();
window->DrawList->_ResetForNewFrame();
window->DrawList->PushTextureID(g.Font->ContainerAtlas->TexID);
PushClipRect(host_rect.Min, host_rect.Max, false);

47
imgui.h
View File

@ -61,7 +61,7 @@ Index of this file:
// Version
// (Integer encoded as XYYZZ for use in #if preprocessor conditionals. Work in progress versions typically starts at XYY99 then bounce up to XYY00, XYY01 etc. when release tagging happens)
#define IMGUI_VERSION "1.77 WIP"
#define IMGUI_VERSION_NUM 17601
#define IMGUI_VERSION_NUM 17602
#define IMGUI_CHECKVERSION() ImGui::DebugCheckVersionAndDataLayout(IMGUI_VERSION, sizeof(ImGuiIO), sizeof(ImGuiStyle), sizeof(ImVec2), sizeof(ImVec4), sizeof(ImDrawVert), sizeof(ImDrawIdx))
#define IMGUI_HAS_VIEWPORT 1 // Viewport WIP branch
#define IMGUI_HAS_DOCK 1 // Docking WIP branch
@ -1446,7 +1446,7 @@ struct ImGuiStyle
{
float Alpha; // Global alpha applies to everything in Dear ImGui.
ImVec2 WindowPadding; // Padding within a window.
float WindowRounding; // Radius of window corners rounding. Set to 0.0f to have rectangular windows.
float WindowRounding; // Radius of window corners rounding. Set to 0.0f to have rectangular windows. Large values tend to lead to variety of artifacts and are not recommended.
float WindowBorderSize; // Thickness of border around windows. Generally set to 0.0f or 1.0f. (Other values are not well tested and more CPU/GPU costly).
ImVec2 WindowMinSize; // Minimum window size. This is a global setting. If you want to constraint individual windows, use SetNextWindowSizeConstraints().
ImVec2 WindowTitleAlign; // Alignment for title bar text. Defaults to (0.0f,0.5f) for left-aligned,vertically centered.
@ -1978,19 +1978,21 @@ typedef void (*ImDrawCallback)(const ImDrawList* parent_list, const ImDrawCmd* c
#define ImDrawCallback_ResetRenderState (ImDrawCallback)(-1)
// Typically, 1 command = 1 GPU draw call (unless command is a callback)
// Pre 1.71 back-ends will typically ignore the VtxOffset/IdxOffset fields. When 'io.BackendFlags & ImGuiBackendFlags_RendererHasVtxOffset'
// is enabled, those fields allow us to render meshes larger than 64K vertices while keeping 16-bit indices.
// - VtxOffset/IdxOffset: When 'io.BackendFlags & ImGuiBackendFlags_RendererHasVtxOffset' is enabled,
// those fields allow us to render meshes larger than 64K vertices while keeping 16-bit indices.
// Pre-1.71 back-ends will typically ignore the VtxOffset/IdxOffset fields.
// - The ClipRect/TextureId/VtxOffset fields must be contiguous as we memcmp() them together (this is asserted for).
struct ImDrawCmd
{
unsigned int ElemCount; // 4 // Number of indices (multiple of 3) to be rendered as triangles. Vertices are stored in the callee ImDrawList's vtx_buffer[] array, indices in idx_buffer[].
ImVec4 ClipRect; // 4*4 // Clipping rectangle (x1, y1, x2, y2). Subtract ImDrawData->DisplayPos to get clipping rectangle in "viewport" coordinates
ImTextureID TextureId; // 4-8 // User-provided texture ID. Set by user in ImfontAtlas::SetTexID() for fonts or passed to Image*() functions. Ignore if never using images or multiple fonts atlas.
unsigned int VtxOffset; // 4 // Start offset in vertex buffer. Pre-1.71 or without ImGuiBackendFlags_RendererHasVtxOffset: always 0. With ImGuiBackendFlags_RendererHasVtxOffset: may be >0 to support meshes larger than 64K vertices with 16-bit indices.
unsigned int VtxOffset; // 4 // Start offset in vertex buffer. ImGuiBackendFlags_RendererHasVtxOffset: always 0, otherwise may be >0 to support meshes larger than 64K vertices with 16-bit indices.
unsigned int IdxOffset; // 4 // Start offset in index buffer. Always equal to sum of ElemCount drawn so far.
unsigned int ElemCount; // 4 // Number of indices (multiple of 3) to be rendered as triangles. Vertices are stored in the callee ImDrawList's vtx_buffer[] array, indices in idx_buffer[].
ImDrawCallback UserCallback; // 4-8 // If != NULL, call the function instead of rendering the vertices. clip_rect and texture_id will be set normally.
void* UserCallbackData; // 4-8 // The draw callback code can access this.
ImDrawCmd() { ElemCount = 0; TextureId = (ImTextureID)NULL; VtxOffset = IdxOffset = 0; UserCallback = NULL; UserCallbackData = NULL; }
ImDrawCmd() { memset(this, 0, sizeof(*this)); } // Also ensure our padding fields are zeroed
};
// Vertex index, default to 16-bit
@ -2081,19 +2083,19 @@ struct ImDrawList
// [Internal, used while building lists]
const ImDrawListSharedData* _Data; // Pointer to shared draw data (you can use ImGui::GetDrawListSharedData() to get the one from current ImGui context)
const char* _OwnerName; // Pointer to owner window's name for debugging
unsigned int _VtxCurrentOffset; // [Internal] Always 0 unless 'Flags & ImDrawListFlags_AllowVtxOffset'.
unsigned int _VtxCurrentIdx; // [Internal] Generally == VtxBuffer.Size unless we are past 64K vertices, in which case this gets reset to 0.
ImDrawVert* _VtxWritePtr; // [Internal] point within VtxBuffer.Data after each add command (to avoid using the ImVector<> operators too much)
ImDrawIdx* _IdxWritePtr; // [Internal] point within IdxBuffer.Data after each add command (to avoid using the ImVector<> operators too much)
ImVector<ImVec4> _ClipRectStack; // [Internal]
ImVector<ImTextureID> _TextureIdStack; // [Internal]
ImVector<ImVec2> _Path; // [Internal] current path building
ImDrawCmd _CmdHeader; // [Internal] Template of active commands. Fields should match those of CmdBuffer.back().
ImDrawListSplitter _Splitter; // [Internal] for channels api (note: prefer using your own persistent instance of ImDrawListSplitter!)
// If you want to create ImDrawList instances, pass them ImGui::GetDrawListSharedData() or create and use your own ImDrawListSharedData (so you can use ImDrawList without ImGui)
ImDrawList(const ImDrawListSharedData* shared_data) { _Data = shared_data; Flags = ImDrawListFlags_None; _VtxCurrentOffset = _VtxCurrentIdx = 0; _VtxWritePtr = NULL; _IdxWritePtr = NULL; _OwnerName = NULL; }
ImDrawList(const ImDrawListSharedData* shared_data) { _Data = shared_data; Flags = ImDrawListFlags_None; _VtxCurrentIdx = 0; _VtxWritePtr = NULL; _IdxWritePtr = NULL; _OwnerName = NULL; }
~ImDrawList() { ClearFreeMemory(); }
~ImDrawList() { _ClearFreeMemory(); }
IMGUI_API void PushClipRect(ImVec2 clip_rect_min, ImVec2 clip_rect_max, bool intersect_with_current_clip_rect = false); // Render-level scissoring. This is passed down to your render function but not used for CPU-side coarse clipping. Prefer using higher-level ImGui::PushClipRect() to affect logic (hit-testing and widget culling)
IMGUI_API void PushClipRectFullScreen();
IMGUI_API void PopClipRect();
@ -2159,20 +2161,25 @@ struct ImDrawList
inline void ChannelsMerge() { _Splitter.Merge(this); }
inline void ChannelsSetCurrent(int n) { _Splitter.SetCurrentChannel(this, n); }
// [Internal helpers]
// NB: all primitives needs to be reserved via PrimReserve() beforehand!
IMGUI_API void ResetForNewFrame();
IMGUI_API void ClearFreeMemory();
// Advanced: Primitives allocations
// - We render triangles (three vertices)
// - All primitives needs to be reserved via PrimReserve() beforehand.
IMGUI_API void PrimReserve(int idx_count, int vtx_count);
IMGUI_API void PrimUnreserve(int idx_count, int vtx_count);
IMGUI_API void PrimRect(const ImVec2& a, const ImVec2& b, ImU32 col); // Axis aligned rectangle (composed of two triangles)
IMGUI_API void PrimRectUV(const ImVec2& a, const ImVec2& b, const ImVec2& uv_a, const ImVec2& uv_b, ImU32 col);
IMGUI_API void PrimQuadUV(const ImVec2& a, const ImVec2& b, const ImVec2& c, const ImVec2& d, const ImVec2& uv_a, const ImVec2& uv_b, const ImVec2& uv_c, const ImVec2& uv_d, ImU32 col);
inline void PrimWriteVtx(const ImVec2& pos, const ImVec2& uv, ImU32 col){ _VtxWritePtr->pos = pos; _VtxWritePtr->uv = uv; _VtxWritePtr->col = col; _VtxWritePtr++; _VtxCurrentIdx++; }
inline void PrimWriteIdx(ImDrawIdx idx) { *_IdxWritePtr = idx; _IdxWritePtr++; }
inline void PrimVtx(const ImVec2& pos, const ImVec2& uv, ImU32 col) { PrimWriteIdx((ImDrawIdx)_VtxCurrentIdx); PrimWriteVtx(pos, uv, col); }
IMGUI_API void UpdateClipRect();
IMGUI_API void UpdateTextureID();
inline void PrimWriteVtx(const ImVec2& pos, const ImVec2& uv, ImU32 col) { _VtxWritePtr->pos = pos; _VtxWritePtr->uv = uv; _VtxWritePtr->col = col; _VtxWritePtr++; _VtxCurrentIdx++; }
inline void PrimWriteIdx(ImDrawIdx idx) { *_IdxWritePtr = idx; _IdxWritePtr++; }
inline void PrimVtx(const ImVec2& pos, const ImVec2& uv, ImU32 col) { PrimWriteIdx((ImDrawIdx)_VtxCurrentIdx); PrimWriteVtx(pos, uv, col); } // Write vertex with unique index
// [Internal helpers]
IMGUI_API void _ResetForNewFrame();
IMGUI_API void _ClearFreeMemory();
IMGUI_API void _PopUnusedDrawCmd();
IMGUI_API void _OnChangedClipRect();
IMGUI_API void _OnChangedTextureID();
IMGUI_API void _OnChangedVtxOffset();
};
// All draw data to render a Dear ImGui frame
@ -2343,7 +2350,7 @@ struct ImFontAtlas
// After calling Build(), you can query the rectangle position and render your pixels.
// You can also request your rectangles to be mapped as font glyph (given a font + Unicode point),
// so you can render e.g. custom colorful icons and use them as regular glyphs.
// Read docs/FONTS.txt for more details about using colorful icons.
// Read docs/FONTS.md for more details about using colorful icons.
// Note: this API may be redesigned later in order to support multi-monitor varying DPI settings.
IMGUI_API int AddCustomRectRegular(int width, int height);
IMGUI_API int AddCustomRectFontGlyph(ImFont* font, ImWchar id, int width, int height, float advance_x, const ImVec2& offset = ImVec2(0, 0));

12
imgui_demo.cpp
View File

@ -154,7 +154,7 @@ static void ShowExampleAppCustomRendering(bool* p_open);
static void ShowExampleMenuFile();
// Helper to display a little (?) mark which shows a tooltip when hovered.
// In your own code you may want to display an actual icon if you are using a merged icon fonts (see docs/FONTS.txt)
// In your own code you may want to display an actual icon if you are using a merged icon fonts (see docs/FONTS.md)
static void HelpMarker(const char* desc)
{
ImGui::TextDisabled("(?)");
@ -915,7 +915,7 @@ static void ShowDemoWindowWidgets()
if (ImGui::TreeNode("UTF-8 Text"))
{
// UTF-8 test with Japanese characters
// (Needs a suitable font? Try "Google Noto" or "Arial Unicode". See docs/FONTS.txt for details.)
// (Needs a suitable font? Try "Google Noto" or "Arial Unicode". See docs/FONTS.md for details.)
// - From C++11 you can use the u8"my text" syntax to encode literal strings as UTF-8
// - For earlier compiler, you may be able to encode your sources as UTF-8 (e.g. in Visual Studio, you
// can save your source files as 'UTF-8 without signature').
@ -927,7 +927,7 @@ static void ShowDemoWindowWidgets()
ImGui::TextWrapped(
"CJK text will only appears if the font was loaded with the appropriate CJK character ranges. "
"Call io.Font->AddFontFromFileTTF() manually to load extra character ranges. "
"Read docs/FONTS.txt for details.");
"Read docs/FONTS.md for details.");
ImGui::Text("Hiragana: \xe3\x81\x8b\xe3\x81\x8d\xe3\x81\x8f\xe3\x81\x91\xe3\x81\x93 (kakikukeko)"); // Normally we would use u8"blah blah" with the proper characters directly in the string.
ImGui::Text("Kanjis: \xe6\x97\xa5\xe6\x9c\xac\xe8\xaa\x9e (nihongo)");
static char buf[32] = "\xe6\x97\xa5\xe6\x9c\xac\xe8\xaa\x9e";
@ -3616,7 +3616,7 @@ void ImGui::ShowFontSelector(const char* label)
HelpMarker(
"- Load additional fonts with io.Fonts->AddFontFromFileTTF().\n"
"- The font atlas is built when calling io.Fonts->GetTexDataAsXXXX() or io.Fonts->Build().\n"
"- Read FAQ and docs/FONTS.txt for more details.\n"
"- Read FAQ and docs/FONTS.md for more details.\n"
"- If you need to add/remove fonts at runtime (e.g. for DPI change), do it before calling NewFrame().");
}
@ -3844,7 +3844,7 @@ void ImGui::ShowStyleEditor(ImGuiStyle* ref)
{
// Tips: in a real user application, you may want to merge and use an icon font into the main font,
// so instead of "Save"/"Revert" you'd use icons!
// Read the FAQ and docs/FONTS.txt about using icon fonts. It's really easy and super convenient!
// Read the FAQ and docs/FONTS.md about using icon fonts. It's really easy and super convenient!
ImGui::SameLine(0.0f, style.ItemInnerSpacing.x); if (ImGui::Button("Save")) { ref->Colors[i] = style.Colors[i]; }
ImGui::SameLine(0.0f, style.ItemInnerSpacing.x); if (ImGui::Button("Revert")) { style.Colors[i] = ref->Colors[i]; }
}
@ -3862,7 +3862,7 @@ void ImGui::ShowStyleEditor(ImGuiStyle* ref)
{
ImGuiIO& io = ImGui::GetIO();
ImFontAtlas* atlas = io.Fonts;
HelpMarker("Read FAQ and docs/FONTS.txt for details on font loading.");
HelpMarker("Read FAQ and docs/FONTS.md for details on font loading.");
ImGui::PushItemWidth(120);
for (int i = 0; i < atlas->Fonts.Size; i++)
{

179
imgui_draw.cpp
View File

@ -383,13 +383,19 @@ void ImDrawListSharedData::SetCircleSegmentMaxError(float max_error)
}
// Initialize before use in a new frame. We always have a command ready in the buffer.
void ImDrawList::ResetForNewFrame()
void ImDrawList::_ResetForNewFrame()
{
// Verify that the ImDrawCmd fields we want to memcmp() are contiguous in memory.
// (those should be IM_STATIC_ASSERT() in theory but with our pre C++11 setup the whole check doesn't compile with GCC)
IM_ASSERT(IM_OFFSETOF(ImDrawCmd, ClipRect) == 0);
IM_ASSERT(IM_OFFSETOF(ImDrawCmd, TextureId) == sizeof(ImVec4));
IM_ASSERT(IM_OFFSETOF(ImDrawCmd, VtxOffset) == sizeof(ImVec4) + sizeof(ImTextureID));
CmdBuffer.resize(0);
IdxBuffer.resize(0);
VtxBuffer.resize(0);
Flags = _Data->InitialFlags;
_VtxCurrentOffset = 0;
memset(&_CmdHeader, 0, sizeof(_CmdHeader));
_VtxCurrentIdx = 0;
_VtxWritePtr = NULL;
_IdxWritePtr = NULL;
@ -400,13 +406,12 @@ void ImDrawList::ResetForNewFrame()
CmdBuffer.push_back(ImDrawCmd());
}
void ImDrawList::ClearFreeMemory()
void ImDrawList::_ClearFreeMemory()
{
CmdBuffer.clear();
IdxBuffer.clear();
VtxBuffer.clear();
Flags = ImDrawListFlags_None;
_VtxCurrentOffset = 0;
_VtxCurrentIdx = 0;
_VtxWritePtr = NULL;
_IdxWritePtr = NULL;
@ -426,26 +431,34 @@ ImDrawList* ImDrawList::CloneOutput() const
return dst;
}
// Using macros because C++ is a terrible language, we want guaranteed inline, no code in header, and no overhead in Debug builds
#define GetCurrentClipRect() (_ClipRectStack.Size ? _ClipRectStack.Data[_ClipRectStack.Size-1] : _Data->ClipRectFullscreen)
#define GetCurrentTextureId() (_TextureIdStack.Size ? _TextureIdStack.Data[_TextureIdStack.Size-1] : (ImTextureID)NULL)
void ImDrawList::AddDrawCmd()
{
ImDrawCmd draw_cmd;
draw_cmd.ClipRect = GetCurrentClipRect();
draw_cmd.TextureId = GetCurrentTextureId();
draw_cmd.VtxOffset = _VtxCurrentOffset;
draw_cmd.ClipRect = _CmdHeader.ClipRect; // Same as calling ImDrawCmd_HeaderCopy()
draw_cmd.TextureId = _CmdHeader.TextureId;
draw_cmd.VtxOffset = _CmdHeader.VtxOffset;
draw_cmd.IdxOffset = IdxBuffer.Size;
IM_ASSERT(draw_cmd.ClipRect.x <= draw_cmd.ClipRect.z && draw_cmd.ClipRect.y <= draw_cmd.ClipRect.w);
CmdBuffer.push_back(draw_cmd);
}
// Pop trailing draw command (used before merging or presenting to user)
// Note that this leaves the ImDrawList in a state unfit for further commands, as most code assume that CmdBuffer.Size > 0 && CmdBuffer.back().UserCallback == NULL
void ImDrawList::_PopUnusedDrawCmd()
{
if (CmdBuffer.Size == 0)
return;
ImDrawCmd* curr_cmd = &CmdBuffer.Data[CmdBuffer.Size - 1];
if (curr_cmd->ElemCount == 0 && curr_cmd->UserCallback == NULL)
CmdBuffer.pop_back();
}
void ImDrawList::AddCallback(ImDrawCallback callback, void* callback_data)
{
ImDrawCmd* curr_cmd = &CmdBuffer.Data[CmdBuffer.Size - 1];
if (curr_cmd->ElemCount != 0 || curr_cmd->UserCallback != NULL)
IM_ASSERT(curr_cmd->UserCallback == NULL);
if (curr_cmd->ElemCount != 0)
{
AddDrawCmd();
curr_cmd = &CmdBuffer.Data[CmdBuffer.Size - 1];
@ -456,68 +469,79 @@ void ImDrawList::AddCallback(ImDrawCallback callback, void* callback_data)
AddDrawCmd(); // Force a new command after us (see comment below)
}
// Compare ClipRect, TextureId and VtxOffset with a single memcmp()
#define ImDrawCmd_HeaderSize (IM_OFFSETOF(ImDrawCmd, VtxOffset) + sizeof(unsigned int))
#define ImDrawCmd_HeaderCompare(CMD_LHS, CMD_RHS) (memcmp(CMD_LHS, CMD_RHS, ImDrawCmd_HeaderSize)) // Compare ClipRect, TextureId, VtxOffset
#define ImDrawCmd_HeaderCopy(CMD_DST, CMD_SRC) (memcpy(CMD_DST, CMD_SRC, ImDrawCmd_HeaderSize)) // Copy ClipRect, TextureId, VtxOffset
// Our scheme may appears a bit unusual, basically we want the most-common calls AddLine AddRect etc. to not have to perform any check so we always have a command ready in the stack.
// The cost of figuring out if a new command has to be added or if we can merge is paid in those Update** functions only.
void ImDrawList::UpdateClipRect()
void ImDrawList::_OnChangedClipRect()
{
// If current command is used with different settings we need to add a new command
const ImVec4 curr_clip_rect = GetCurrentClipRect();
ImDrawCmd* curr_cmd = &CmdBuffer.Data[CmdBuffer.Size - 1];
if ((curr_cmd->ElemCount != 0 && memcmp(&curr_cmd->ClipRect, &curr_clip_rect, sizeof(ImVec4)) != 0) || curr_cmd->UserCallback != NULL)
if (curr_cmd->ElemCount != 0 && memcmp(&curr_cmd->ClipRect, &_CmdHeader.ClipRect, sizeof(ImVec4)) != 0)
{
AddDrawCmd();
return;
}
IM_ASSERT(curr_cmd->UserCallback == NULL);
// Try to merge with previous command if it matches, else use current command
if (curr_cmd->ElemCount == 0 && CmdBuffer.Size > 1)
ImDrawCmd* prev_cmd = curr_cmd - 1;
if (curr_cmd->ElemCount == 0 && CmdBuffer.Size > 1 && ImDrawCmd_HeaderCompare(&_CmdHeader, prev_cmd) == 0 && prev_cmd->UserCallback == NULL)
{
ImDrawCmd* prev_cmd = curr_cmd - 1;
if (memcmp(&prev_cmd->ClipRect, &curr_clip_rect, sizeof(ImVec4)) == 0 && prev_cmd->VtxOffset == _VtxCurrentOffset && prev_cmd->TextureId == GetCurrentTextureId() && prev_cmd->UserCallback == NULL)
{
CmdBuffer.pop_back();
return;
}
CmdBuffer.pop_back();
return;
}
curr_cmd->ClipRect = curr_clip_rect;
curr_cmd->ClipRect = _CmdHeader.ClipRect;
}
void ImDrawList::UpdateTextureID()
void ImDrawList::_OnChangedTextureID()
{
// If current command is used with different settings we need to add a new command
const ImTextureID curr_texture_id = GetCurrentTextureId();
ImDrawCmd* curr_cmd = &CmdBuffer.Data[CmdBuffer.Size - 1];
if (!curr_cmd || (curr_cmd->ElemCount != 0 && curr_cmd->TextureId != curr_texture_id) || curr_cmd->UserCallback != NULL)
if (curr_cmd->ElemCount != 0 && curr_cmd->TextureId != _CmdHeader.TextureId)
{
AddDrawCmd();
return;
}
IM_ASSERT(curr_cmd->UserCallback == NULL);
// Try to merge with previous command if it matches, else use current command
if (curr_cmd->ElemCount == 0 && CmdBuffer.Size > 1)
ImDrawCmd* prev_cmd = curr_cmd - 1;
if (curr_cmd->ElemCount == 0 && CmdBuffer.Size > 1 && ImDrawCmd_HeaderCompare(&_CmdHeader, prev_cmd) == 0 && prev_cmd->UserCallback == NULL)
{
ImDrawCmd* prev_cmd = curr_cmd - 1;
if (prev_cmd->TextureId == curr_texture_id && memcmp(&prev_cmd->ClipRect, &GetCurrentClipRect(), sizeof(ImVec4)) == 0 && prev_cmd->VtxOffset == _VtxCurrentOffset && prev_cmd->UserCallback == NULL)
{
CmdBuffer.pop_back();
return;
}
CmdBuffer.pop_back();
return;
}
curr_cmd->TextureId = curr_texture_id;
curr_cmd->TextureId = _CmdHeader.TextureId;
}
#undef GetCurrentClipRect
#undef GetCurrentTextureId
void ImDrawList::_OnChangedVtxOffset()
{
// We don't need to compare curr_cmd->VtxOffset != _CmdHeader.VtxOffset because we know it'll be different at the time we call this.
_VtxCurrentIdx = 0;
ImDrawCmd* curr_cmd = &CmdBuffer.Data[CmdBuffer.Size - 1];
IM_ASSERT(curr_cmd->VtxOffset != _CmdHeader.VtxOffset);
if (curr_cmd->ElemCount != 0)
{
AddDrawCmd();
return;
}
IM_ASSERT(curr_cmd->UserCallback == NULL);
curr_cmd->VtxOffset = _CmdHeader.VtxOffset;
}
// Render-level scissoring. This is passed down to your render function but not used for CPU-side coarse clipping. Prefer using higher-level ImGui::PushClipRect() to affect logic (hit-testing and widget culling)
void ImDrawList::PushClipRect(ImVec2 cr_min, ImVec2 cr_max, bool intersect_with_current_clip_rect)
{
ImVec4 cr(cr_min.x, cr_min.y, cr_max.x, cr_max.y);
if (intersect_with_current_clip_rect && _ClipRectStack.Size)
if (intersect_with_current_clip_rect)
{
ImVec4 current = _ClipRectStack.Data[_ClipRectStack.Size-1];
ImVec4 current = _CmdHeader.ClipRect;
if (cr.x < current.x) cr.x = current.x;
if (cr.y < current.y) cr.y = current.y;
if (cr.z > current.z) cr.z = current.z;
@ -527,7 +551,8 @@ void ImDrawList::PushClipRect(ImVec2 cr_min, ImVec2 cr_max, bool intersect_with_
cr.w = ImMax(cr.y, cr.w);
_ClipRectStack.push_back(cr);
UpdateClipRect();
_CmdHeader.ClipRect = cr;
_OnChangedClipRect();
}
void ImDrawList::PushClipRectFullScreen()
@ -537,22 +562,23 @@ void ImDrawList::PushClipRectFullScreen()
void ImDrawList::PopClipRect()
{
IM_ASSERT(_ClipRectStack.Size > 0);
_ClipRectStack.pop_back();
UpdateClipRect();
_CmdHeader.ClipRect = (_ClipRectStack.Size == 0) ? _Data->ClipRectFullscreen : _ClipRectStack.Data[_ClipRectStack.Size - 1];
_OnChangedClipRect();
}
void ImDrawList::PushTextureID(ImTextureID texture_id)
{
_TextureIdStack.push_back(texture_id);
UpdateTextureID();
_CmdHeader.TextureId = texture_id;
_OnChangedTextureID();
}
void ImDrawList::PopTextureID()
{
IM_ASSERT(_TextureIdStack.Size > 0);
_TextureIdStack.pop_back();
UpdateTextureID();
_CmdHeader.TextureId = (_TextureIdStack.Size == 0) ? (ImTextureID)NULL : _TextureIdStack.Data[_TextureIdStack.Size - 1];
_OnChangedTextureID();
}
// Reserve space for a number of vertices and indices.
@ -564,9 +590,8 @@ void ImDrawList::PrimReserve(int idx_count, int vtx_count)
IM_ASSERT_PARANOID(idx_count >= 0 && vtx_count >= 0);
if (sizeof(ImDrawIdx) == 2 && (_VtxCurrentIdx + vtx_count >= (1 << 16)) && (Flags & ImDrawListFlags_AllowVtxOffset))
{
_VtxCurrentOffset = VtxBuffer.Size;
_VtxCurrentIdx = 0;
AddDrawCmd();
_CmdHeader.VtxOffset = VtxBuffer.Size;
_OnChangedVtxOffset();
}
ImDrawCmd* draw_cmd = &CmdBuffer.Data[CmdBuffer.Size - 1];
@ -1241,9 +1266,9 @@ void ImDrawList::AddText(const ImFont* font, float font_size, const ImVec2& pos,
if (font_size == 0.0f)
font_size = _Data->FontSize;
IM_ASSERT(font->ContainerAtlas->TexID == _TextureIdStack.back()); // Use high-level ImGui::PushFont() or low-level ImDrawList::PushTextureId() to change font.
IM_ASSERT(font->ContainerAtlas->TexID == _CmdHeader.TextureId); // Use high-level ImGui::PushFont() or low-level ImDrawList::PushTextureId() to change font.
ImVec4 clip_rect = _ClipRectStack.back();
ImVec4 clip_rect = _CmdHeader.ClipRect;
if (cpu_fine_clip_rect)
{
clip_rect.x = ImMax(clip_rect.x, cpu_fine_clip_rect->x);
@ -1264,7 +1289,7 @@ void ImDrawList::AddImage(ImTextureID user_texture_id, const ImVec2& p_min, cons
if ((col & IM_COL32_A_MASK) == 0)
return;
const bool push_texture_id = _TextureIdStack.empty() || user_texture_id != _TextureIdStack.back();
const bool push_texture_id = user_texture_id != _CmdHeader.TextureId;
if (push_texture_id)
PushTextureID(user_texture_id);
@ -1280,7 +1305,7 @@ void ImDrawList::AddImageQuad(ImTextureID user_texture_id, const ImVec2& p1, con
if ((col & IM_COL32_A_MASK) == 0)
return;
const bool push_texture_id = _TextureIdStack.empty() || user_texture_id != _TextureIdStack.back();
const bool push_texture_id = user_texture_id != _CmdHeader.TextureId;
if (push_texture_id)
PushTextureID(user_texture_id);
@ -1363,27 +1388,20 @@ void ImDrawListSplitter::Split(ImDrawList* draw_list, int channels_count)
if (_Channels[i]._CmdBuffer.Size == 0)
{
ImDrawCmd draw_cmd;
draw_cmd.ClipRect = draw_list->_ClipRectStack.back();
draw_cmd.TextureId = draw_list->_TextureIdStack.back();
ImDrawCmd_HeaderCopy(&draw_cmd, &draw_list->_CmdHeader); // Copy ClipRect, TextureId, VtxOffset
_Channels[i]._CmdBuffer.push_back(draw_cmd);
}
}
}
static inline bool CanMergeDrawCommands(ImDrawCmd* a, ImDrawCmd* b)
{
return memcmp(&a->ClipRect, &b->ClipRect, sizeof(a->ClipRect)) == 0 && a->TextureId == b->TextureId && a->VtxOffset == b->VtxOffset && !a->UserCallback && !b->UserCallback;
}
void ImDrawListSplitter::Merge(ImDrawList* draw_list)
{
// Note that we never use or rely on channels.Size because it is merely a buffer that we never shrink back to 0 to keep all sub-buffers ready for use.
// Note that we never use or rely on _Channels.Size because it is merely a buffer that we never shrink back to 0 to keep all sub-buffers ready for use.
if (_Count <= 1)
return;
SetCurrentChannel(draw_list, 0);
if (draw_list->CmdBuffer.Size != 0 && draw_list->CmdBuffer.back().ElemCount == 0)
draw_list->CmdBuffer.pop_back();
draw_list->_PopUnusedDrawCmd();
// Calculate our final buffer sizes. Also fix the incorrect IdxOffset values in each command.
int new_cmd_buffer_count = 0;
@ -1393,14 +1411,21 @@ void ImDrawListSplitter::Merge(ImDrawList* draw_list)
for (int i = 1; i < _Count; i++)
{
ImDrawChannel& ch = _Channels[i];
// Equivalent of PopUnusedDrawCmd() for this channel's cmdbuffer and except we don't need to test for UserCallback.
if (ch._CmdBuffer.Size > 0 && ch._CmdBuffer.back().ElemCount == 0)
ch._CmdBuffer.pop_back();
if (ch._CmdBuffer.Size > 0 && last_cmd != NULL && CanMergeDrawCommands(last_cmd, &ch._CmdBuffer[0]))
if (ch._CmdBuffer.Size > 0 && last_cmd != NULL)
{
// Merge previous channel last draw command with current channel first draw command if matching.
last_cmd->ElemCount += ch._CmdBuffer[0].ElemCount;
idx_offset += ch._CmdBuffer[0].ElemCount;
ch._CmdBuffer.erase(ch._CmdBuffer.Data); // FIXME-OPT: Improve for multiple merges.
ImDrawCmd* next_cmd = &ch._CmdBuffer[0];
if (ImDrawCmd_HeaderCompare(last_cmd, next_cmd) == 0 && last_cmd->UserCallback == NULL && next_cmd->UserCallback == NULL)
{
// Merge previous channel last draw command with current channel first draw command if matching.
last_cmd->ElemCount += next_cmd->ElemCount;
idx_offset += next_cmd->ElemCount;
ch._CmdBuffer.erase(ch._CmdBuffer.Data); // FIXME-OPT: Improve for multiple merges.
}
}
if (ch._CmdBuffer.Size > 0)
last_cmd = &ch._CmdBuffer.back();
@ -1425,8 +1450,18 @@ void ImDrawListSplitter::Merge(ImDrawList* draw_list)
if (int sz = ch._IdxBuffer.Size) { memcpy(idx_write, ch._IdxBuffer.Data, sz * sizeof(ImDrawIdx)); idx_write += sz; }
}
draw_list->_IdxWritePtr = idx_write;
draw_list->UpdateClipRect(); // We call this instead of AddDrawCmd(), so that empty channels won't produce an extra draw call.
draw_list->UpdateTextureID();
// Ensure there's always a non-callback draw command trailing the command-buffer
if (draw_list->CmdBuffer.Size == 0 || draw_list->CmdBuffer.back().UserCallback != NULL)
draw_list->AddDrawCmd();
// If current command is used with different settings we need to add a new command
ImDrawCmd* curr_cmd = &draw_list->CmdBuffer.Data[draw_list->CmdBuffer.Size - 1];
if (curr_cmd->ElemCount == 0)
ImDrawCmd_HeaderCopy(curr_cmd, &draw_list->_CmdHeader); // Copy ClipRect, TextureId, VtxOffset
else if (ImDrawCmd_HeaderCompare(curr_cmd, &draw_list->_CmdHeader) != 0)
draw_list->AddDrawCmd();
_Count = 1;
}
@ -1435,6 +1470,7 @@ void ImDrawListSplitter::SetCurrentChannel(ImDrawList* draw_list, int idx)
IM_ASSERT(idx >= 0 && idx < _Count);
if (_Current == idx)
return;
// Overwrite ImVector (12/16 bytes), four times. This is merely a silly optimization instead of doing .swap()
memcpy(&_Channels.Data[_Current]._CmdBuffer, &draw_list->CmdBuffer, sizeof(draw_list->CmdBuffer));
memcpy(&_Channels.Data[_Current]._IdxBuffer, &draw_list->IdxBuffer, sizeof(draw_list->IdxBuffer));
@ -1442,6 +1478,13 @@ void ImDrawListSplitter::SetCurrentChannel(ImDrawList* draw_list, int idx)
memcpy(&draw_list->CmdBuffer, &_Channels.Data[idx]._CmdBuffer, sizeof(draw_list->CmdBuffer));
memcpy(&draw_list->IdxBuffer, &_Channels.Data[idx]._IdxBuffer, sizeof(draw_list->IdxBuffer));
draw_list->_IdxWritePtr = draw_list->IdxBuffer.Data + draw_list->IdxBuffer.Size;
// If current command is used with different settings we need to add a new command
ImDrawCmd* curr_cmd = &draw_list->CmdBuffer.Data[draw_list->CmdBuffer.Size - 1];
if (curr_cmd->ElemCount == 0)
ImDrawCmd_HeaderCopy(curr_cmd, &draw_list->_CmdHeader); // Copy ClipRect, TextureId, VtxOffset
else if (ImDrawCmd_HeaderCompare(curr_cmd, &draw_list->_CmdHeader) != 0)
draw_list->AddDrawCmd();
}
//-----------------------------------------------------------------------------

2
imgui_internal.h
View File

@ -1747,7 +1747,7 @@ struct IMGUI_API ImGuiWindow
ImVec2 ContentSize; // Size of contents/scrollable client area (calculated from the extents reach of the cursor) from previous frame. Does not include window decoration or window padding.
ImVec2 ContentSizeExplicit; // Size of contents/scrollable client area explicitly request by the user via SetNextWindowContentSize().
ImVec2 WindowPadding; // Window padding at the time of Begin().
float WindowRounding; // Window rounding at the time of Begin().
float WindowRounding; // Window rounding at the time of Begin(). May be clamped lower to avoid rendering artifacts with title bar, menu bar etc.
float WindowBorderSize; // Window border size at the time of Begin().
int NameBufLen; // Size of buffer storing Name. May be larger than strlen(Name)!
ImGuiID MoveId; // == window->GetID("#MOVE")