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Improvements to minor mistakes in documentation comments (#3923)

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ANF-Studios 2021-03-16 12:30:55 +01:00 committed by ocornut
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15
docs/CHANGELOG.txt
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@ -31,6 +31,17 @@ HOW TO UPDATE?
- Please report any issue!
-----------------------------------------------------------------------
VERSION 1.83 WIP (In Progress)
-----------------------------------------------------------------------
Breaking Changes:
Other Changes:
- Docs: Improvements to minor mistakes in documentation comments (#3923) [@ANF-Studios]
-----------------------------------------------------------------------
VERSION 1.82 (Released 2021-02-15)
-----------------------------------------------------------------------
@ -346,7 +357,7 @@ Breaking Changes:
- Renamed ImGuiSliderFlags_ClampOnInput to ImGuiSliderFlags_AlwaysClamp. Kept redirection enum (will obsolete).
- Renamed OpenPopupContextItem() back to OpenPopupOnItemClick(), REVERTED CHANGE FROM 1.77.
For variety of reason this is more self-explanatory and less error-prone. Kept inline redirection function.
- Removed return value from OpenPopupOnItemClick() - returned true on mouse release on item - because it
- Removed return value from OpenPopupOnItemClick() - returned true on mouse release on an item - because it
is inconsistent with other popups API and makes others misleading. It's also and unnecessary: you can
use IsWindowAppearing() after BeginPopup() for a similar result.
@ -1286,7 +1297,7 @@ Breaking Changes:
- Removed io.DisplayVisibleMin/DisplayVisibleMax (which were marked obsolete and removed from viewport/docking branch already).
- Made it illegal/assert when io.DisplayTime == 0.0f (with an exception for the first frame).
If for some reason your time step calculation gives you a zero value, replace it with a arbitrary small value!
If for some reason your time step calculation gives you a zero value, replace it with a arbitrarily small value!
Other Changes:

24
docs/FAQ.md
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@ -16,12 +16,12 @@ or view this file with any Markdown viewer.
| [Which version should I get?](#q-which-version-should-i-get) |
| **Q&A: Integration** |
| **[How to get started?](#q-how-to-get-started)** |
| **[How can I tell whether to dispatch mouse/keyboard to Dear ImGui or to my application?](#q-how-can-i-tell-whether-to-dispatch-mousekeyboard-to-dear-imgui-or-to-my-application)** |
| **[How can I tell whether to dispatch mouse/keyboard to Dear ImGui or my application?](#q-how-can-i-tell-whether-to-dispatch-mousekeyboard-to-dear-imgui-or-my-application)** |
| [How can I enable keyboard or gamepad controls?](#q-how-can-i-enable-keyboard-or-gamepad-controls) |
| [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 little squares are showing instead of text..](#q-i-integrated-dear-imgui-in-my-engine-and-little-squares-are-showing-instead-of-text) |
| [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) |
| [I integrated Dear ImGui in my engine and little squares are showing instead of text...](#q-i-integrated-dear-imgui-in-my-engine-and-little-squares-are-showing-instead-of-text) |
| [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 is my widget not reacting when I click on it?<br>How can I have widgets with an empty label?<br>How can I have multiple widgets with the same label?](#q-why-is-my-widget-not-reacting-when-i-click-on-it)** |
| [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)|
@ -47,7 +47,7 @@ or view this file with any Markdown viewer.
### Q: Where is the documentation?
**This library is poorly documented at the moment and expects of the user to be acquainted with C/C++.**
**This library is poorly documented at the moment and expects the user to be acquainted with C/C++.**
- The [Wiki](https://github.com/ocornut/imgui/wiki) is a hub to many resources and links.
- Dozens of standalone example applications using e.g. OpenGL/DirectX are provided in the [examples/](https://github.com/ocornut/imgui/blob/master/examples/) folder to explain how to integrate Dear ImGui with your own engine/application. You can run those applications and explore them.
- See demo code in [imgui_demo.cpp](https://github.com/ocornut/imgui/blob/master/imgui_demo.cpp) and particularly the `ImGui::ShowDemoWindow()` function. The demo covers most features of Dear ImGui, so you can read the code and see its output.
@ -55,7 +55,7 @@ or view this file with any Markdown viewer.
- See documentation and comments at the top of [imgui.cpp](https://github.com/ocornut/imgui/blob/master/imgui.cpp) + general API comments in [imgui.h](https://github.com/ocornut/imgui/blob/master/imgui.h).
- The [Glossary](https://github.com/ocornut/imgui/wiki/Glossary) page may be useful.
- The [Issues](https://github.com/ocornut/imgui/issues) and [Discussions](https://github.com/ocornut/imgui/discussions) sections can be searched for past questions and issues.
- Your programming IDE is your friend, find the type or function declaration to find comments associated to it.
- Your programming IDE is your friend, find the type or function declaration to find comments associated with it.
- The `ImGui::ShowMetricsWindow()` function exposes lots of internal information and tools. Although it is primary designed as a debugging tool, having access to that information tends to help understands concepts.
##### [Return to Index](#index)
@ -98,7 +98,7 @@ The [Wiki](https://github.com/ocornut/imgui/wiki) is a hub to many resources and
---
### Q: How can I tell whether to dispatch mouse/keyboard to Dear ImGui or to my application?
### Q: How can I tell whether to dispatch mouse/keyboard to Dear ImGui or my application?
You can read the `io.WantCaptureMouse`, `io.WantCaptureKeyboard` and `io.WantTextInput` flags from the ImGuiIO structure.
- When `io.WantCaptureMouse` is set, you need to discard/hide the mouse inputs from your underlying application.
@ -159,7 +159,7 @@ Console SDK also sometimes provide equivalent tooling or wrapper for Synergy-lik
---
### Q: I integrated Dear ImGui in my engine and little squares are showing instead of text..
### Q: I integrated Dear ImGui in my engine and little squares are showing instead of text...
This usually means that: your font texture wasn't uploaded into GPU, or your shader or other rendering state are not reading from the right texture (e.g. texture wasn't bound).
If this happens using the standard backends it is probably that the texture failed to upload, which could happens if for some reason your texture is too big. Also see [docs/FONTS.md](https://github.com/ocornut/imgui/blob/master/docs/FONTS.md).
@ -167,8 +167,8 @@ If this happens using the standard backends it is probably that the texture fail
---
### 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..
### 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.
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
@ -651,11 +651,11 @@ There is an auto-generated [c-api for Dear ImGui (cimgui)](https://github.com/ci
# Q&A: Community
### Q: How can I help?
- Businesses: please reach out to `contact AT dearimgui.com` if you work in a place using Dear ImGui! We can discuss ways for your company to fund development via invoiced technical support, maintenance or sponsoring contacts. This is among the most useful thing you can do for Dear ImGui. With increased funding we can hire more people working on this project.
- Businesses: please reach out to `contact AT dearimgui.com` if you work in a place using Dear ImGui! We can discuss ways for your company to fund development via invoiced technical support, maintenance or sponsoring contacts. This is among the most useful thing you can do for Dear ImGui. With increased funding, we can hire more people working on this project.
- Individuals: you can support continued maintenance and development via PayPal donations. See [README](https://github.com/ocornut/imgui/blob/master/docs/README.md).
- If you are experienced with Dear ImGui and C++, look at [GitHub Issues](https://github.com/ocornut/imgui/issues), [GitHub Discussions](https://github.com/ocornut/imgui/discussions), the [Wiki](https://github.com/ocornut/imgui/wiki), read [docs/TODO.txt](https://github.com/ocornut/imgui/blob/master/docs/TODO.txt) and see how you want to help and can help!
- Disclose your usage of Dear ImGui via a dev blog post, a tweet, a screenshot, a mention somewhere etc.
You may post screenshot or links in the [gallery threads](https://github.com/ocornut/imgui/issues/3488). Visuals are ideal as they inspire other programmers. Disclosing your use of dear imgui help the library grow credibility, and help other teams and programmers with taking decisions.
You may post screenshot or links in the [gallery threads](https://github.com/ocornut/imgui/issues/3488). Visuals are ideal as they inspire other programmers. Disclosing your use of Dear ImGui helps the library grow credibility, and help other teams and programmers with taking decisions.
- If you have issues or if you need to hack into the library, even if you don't expect any support it is useful that you share your issues or sometimes incomplete PR.
##### [Return to Index](#index)

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imgui.cpp
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@ -135,16 +135,16 @@ CODE
READ FIRST
----------
- Remember to read the FAQ (https://www.dearimgui.org/faq)
- Your code creates the UI, if your code doesn't run the UI is gone! The UI can be highly dynamic, there are no construction
or destruction steps, less superfluous data retention on your side, less state duplication, less state synchronization, less bugs.
- Your code creates the UI, if your code doesn't run the UI is gone! The UI can be highly dynamic, there are no construction or
destruction steps, less superfluous data retention on your side, less state duplication, less state synchronization, fewer bugs.
- Call and read ImGui::ShowDemoWindow() for demo code demonstrating most features.
- The library is designed to be built from sources. Avoid pre-compiled binaries and packaged versions. See imconfig.h to configure your build.
- Dear ImGui is an implementation of the IMGUI paradigm (immediate-mode graphical user interface, a term coined by Casey Muratori).
You can learn about IMGUI principles at http://www.johno.se/book/imgui.html, http://mollyrocket.com/861 & more links in the FAQ.
- Dear ImGui is a "single pass" rasterizing implementation of the IMGUI paradigm, aimed at ease of use and high-performances.
For every application frame your UI code will be called only once. This is in contrast to e.g. Unity's own implementation of an IMGUI,
For every application frame, your UI code will be called only once. This is in contrast to e.g. Unity's implementation of an IMGUI,
where the UI code is called multiple times ("multiple passes") from a single entry point. There are pros and cons to both approaches.
- Our origin are on the top-left. In axis aligned bounding boxes, Min = top-left, Max = bottom-right.
- Our origin is on the top-left. In axis aligned bounding boxes, Min = top-left, Max = bottom-right.
- This codebase is also optimized to yield decent performances with typical "Debug" builds settings.
- Please make sure you have asserts enabled (IM_ASSERT redirects to assert() by default, but can be redirected).
If you get an assert, read the messages and comments around the assert.
@ -157,8 +157,8 @@ CODE
HOW TO UPDATE TO A NEWER VERSION OF DEAR IMGUI
----------------------------------------------
- Overwrite all the sources files except for imconfig.h (if you have made modification to your copy of imconfig.h)
- Or maintain your own branch where you have imconfig.h modified as a top-most commit which you can regularly rebase over master.
- Overwrite all the sources files except for imconfig.h (if you have modified your copy of imconfig.h)
- Or maintain your own branch where you have imconfig.h modified as a top-most commit which you can regularly rebase over "master".
- You can also use '#define IMGUI_USER_CONFIG "my_config_file.h" to redirect configuration to your own file.
- Read the "API BREAKING CHANGES" section (below). This is where we list occasional API breaking changes.
If a function/type has been renamed / or marked obsolete, try to fix the name in your code before it is permanently removed
@ -173,12 +173,12 @@ CODE
- Run and study the examples and demo in imgui_demo.cpp to get acquainted with the library.
- In the majority of cases you should be able to use unmodified backends files available in the backends/ folder.
- Add the Dear ImGui source files + selected backend source files to your projects or using your preferred build system.
It is recommended you build and statically link the .cpp files as part of your project and NOT as shared library (DLL).
It is recommended you build and statically link the .cpp files as part of your project and NOT as a shared library (DLL).
- You can later customize the imconfig.h file to tweak some compile-time behavior, such as integrating Dear ImGui types with your own maths types.
- When using Dear ImGui, your programming IDE is your friend: follow the declaration of variables, functions and types to find comments about them.
- Dear ImGui never touches or knows about your GPU state. The only function that knows about GPU is the draw function that you provide.
Effectively it means you can create widgets at any time in your code, regardless of considerations of being in "update" vs "render"
phases of your own application. All rendering information are stored into command-lists that you will retrieve after calling ImGui::Render().
phases of your own application. All rendering information is stored into command-lists that you will retrieve after calling ImGui::Render().
- Refer to the backends and demo applications in the examples/ folder for instruction on how to setup your code.
- If you are running over a standard OS with a common graphics API, you should be able to use unmodified imgui_impl_*** files from the examples/ folder.
@ -186,7 +186,7 @@ CODE
HOW A SIMPLE APPLICATION MAY LOOK LIKE
--------------------------------------
EXHIBIT 1: USING THE EXAMPLE BACKENDS (= imgui_impl_XXX.cpp files from the backends/ folder).
The sub-folders in examples/ contains examples applications following this structure.
The sub-folders in examples/ contain examples applications following this structure.
// Application init: create a dear imgui context, setup some options, load fonts
ImGui::CreateContext();
@ -236,7 +236,7 @@ CODE
unsigned char* pixels = NULL;
io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height);
// At this point you've got the texture data and you need to upload that your your graphic system:
// At this point you've got the texture data and you need to upload that to your graphic system:
// After we have created the texture, store its pointer/identifier (_in whichever format your engine uses_) in 'io.Fonts->TexID'.
// This will be passed back to your via the renderer. Basically ImTextureID == void*. Read FAQ for details about ImTextureID.
MyTexture* texture = MyEngine::CreateTextureFromMemoryPixels(pixels, width, height, TEXTURE_TYPE_RGBA32)
@ -275,14 +275,14 @@ CODE
// Shutdown
ImGui::DestroyContext();
To decide whether to dispatch mouse/keyboard inputs to Dear ImGui to the rest your application,
To decide whether to dispatch mouse/keyboard inputs to Dear ImGui to the rest of your application,
you should read the 'io.WantCaptureMouse', 'io.WantCaptureKeyboard' and 'io.WantTextInput' flags!
Please read the FAQ and example applications for details about this!
HOW A SIMPLE RENDERING FUNCTION MAY LOOK LIKE
---------------------------------------------
The backends in impl_impl_XXX.cpp files contains many working implementations of a rendering function.
The backends in impl_impl_XXX.cpp files contain many working implementations of a rendering function.
void void MyImGuiRenderFunction(ImDrawData* draw_data)
{
@ -308,7 +308,7 @@ CODE
// The vast majority of draw calls will use the Dear ImGui texture atlas, which value you have set yourself during initialization.
MyEngineBindTexture((MyTexture*)pcmd->TextureId);
// We are using scissoring to clip some objects. All low-level graphics API should supports it.
// We are using scissoring to clip some objects. All low-level graphics API should support it.
// - If your engine doesn't support scissoring yet, you may ignore this at first. You will get some small glitches
// (some elements visible outside their bounds) but you can fix that once everything else works!
// - Clipping coordinates are provided in imgui coordinates space:
@ -351,7 +351,7 @@ CODE
Note that io.NavInputs[] is cleared by EndFrame().
- See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. For each entry of io.NavInputs[], set the following values:
0.0f= not held. 1.0f= fully held. Pass intermediate 0.0f..1.0f values for analog triggers/sticks.
- We uses a simple >0.0f test for activation testing, and won't attempt to test for a dead-zone.
- We use a simple >0.0f test for activation testing, and won't attempt to test for a dead-zone.
Your code will probably need to transform your raw inputs (such as e.g. remapping your 0.2..0.9 raw input range to 0.0..1.0 imgui range, etc.).
- You can download PNG/PSD files depicting the gamepad controls for common controllers at: http://dearimgui.org/controls_sheets
- If you need to share inputs between your game and the imgui parts, the easiest approach is to go all-or-nothing, with a buttons combo
@ -363,7 +363,7 @@ CODE
Enabling ImGuiConfigFlags_NavEnableSetMousePos + ImGuiBackendFlags_HasSetMousePos instructs dear imgui to move your mouse cursor along with navigation movements.
When enabled, the NewFrame() function may alter 'io.MousePos' and set 'io.WantSetMousePos' to notify you that it wants the mouse cursor to be moved.
When that happens your backend NEEDS to move the OS or underlying mouse cursor on the next frame. Some of the backends in examples/ do that.
(If you set the NavEnableSetMousePos flag but don't honor 'io.WantSetMousePos' properly, imgui will misbehave as it will see your mouse as moving back and forth!)
(If you set the NavEnableSetMousePos flag but don't honor 'io.WantSetMousePos' properly, imgui will misbehave as it will see your mouse moving back and forth!)
(In a setup when you may not have easy control over the mouse cursor, e.g. uSynergy.c doesn't expose moving remote mouse cursor, you may want
to set a boolean to ignore your other external mouse positions until the external source is moved again.)
@ -373,7 +373,7 @@ CODE
Occasionally introducing changes that are breaking the API. We try to make the breakage minor and easy to fix.
Below is a change-log of API breaking changes only. If you are using one of the functions listed, expect to have to fix some code.
When you are not sure about a old symbol or function name, try using the Search/Find function of your IDE to look for comments or references in all imgui files.
When you are not sure about an old symbol or function name, try using the Search/Find function of your IDE to look for comments or references in all imgui files.
You can read releases logs https://github.com/ocornut/imgui/releases for more details.
- 2021/03/12 (1.82) - upgraded ImDrawList::AddRect(), AddRectFilled(), PathRect() to use ImDrawFlags instead of ImDrawCornersFlags.
@ -424,7 +424,7 @@ CODE
- 2020/09/25 (1.79) - renamed ImGuiSliderFlags_ClampOnInput to ImGuiSliderFlags_AlwaysClamp. Kept redirection enum (will obsolete sooner because previous name was added recently).
- 2020/09/25 (1.79) - renamed style.TabMinWidthForUnselectedCloseButton to style.TabMinWidthForCloseButton.
- 2020/09/21 (1.79) - renamed OpenPopupContextItem() back to OpenPopupOnItemClick(), reverting the change from 1.77. For varieties of reason this is more self-explanatory.
- 2020/09/21 (1.79) - removed return value from OpenPopupOnItemClick() - returned true on mouse release on item - because it is inconsistent with other popup APIs and makes others misleading. It's also and unnecessary: you can use IsWindowAppearing() after BeginPopup() for a similar result.
- 2020/09/21 (1.79) - removed return value from OpenPopupOnItemClick() - returned true on mouse release on an item - because it is inconsistent with other popup APIs and makes others misleading. It's also and unnecessary: you can use IsWindowAppearing() after BeginPopup() for a similar result.
- 2020/09/17 (1.79) - removed ImFont::DisplayOffset in favor of ImFontConfig::GlyphOffset. DisplayOffset was applied after scaling and not very meaningful/useful outside of being needed by the default ProggyClean font. If you scaled this value after calling AddFontDefault(), this is now done automatically. It was also getting in the way of better font scaling, so let's get rid of it now!
- 2020/08/17 (1.78) - obsoleted use of the trailing 'float power=1.0f' parameter for DragFloat(), DragFloat2(), DragFloat3(), DragFloat4(), DragFloatRange2(), DragScalar(), DragScalarN(), SliderFloat(), SliderFloat2(), SliderFloat3(), SliderFloat4(), SliderScalar(), SliderScalarN(), VSliderFloat() and VSliderScalar().
replaced the 'float power=1.0f' argument with integer-based flags defaulting to 0 (as with all our flags).
@ -433,7 +433,7 @@ CODE
- if you set the 'power' parameter to 1.0f (same as previous default value): 1/ your compiler may warn on float>int conversion, 2/ everything else will work. 3/ you can replace the 1.0f value with 0 to fix the warning, and be technically correct.
- if you set the 'power' parameter to >1.0f (to enable non-linear editing): 1/ your compiler may warn on float>int conversion, 2/ code will assert at runtime, 3/ in case asserts are disabled, the code will not crash and enable the _Logarithmic flag. 4/ you can replace the >1.0f value with ImGuiSliderFlags_Logarithmic to fix the warning/assert and get a _similar_ effect as previous uses of power >1.0f.
see https://github.com/ocornut/imgui/issues/3361 for all details.
kept inline redirection functions (will obsolete) apart for: DragFloatRange2(), VSliderFloat(), VSliderScalar(). For those three the 'float power=1.0f' version were removed directly as they were most unlikely ever used.
kept inline redirection functions (will obsolete) apart for: DragFloatRange2(), VSliderFloat(), VSliderScalar(). For those three the 'float power=1.0f' version was removed directly as they were most unlikely ever used.
for shared code, you can version check at compile-time with `#if IMGUI_VERSION_NUM >= 17704`.
- obsoleted use of v_min > v_max in DragInt, DragFloat, DragScalar to lock edits (introduced in 1.73, was not demoed nor documented very), will be replaced by a more generic ReadOnly feature. You may use the ImGuiSliderFlags_ReadOnly internal flag in the meantime.
- 2020/06/23 (1.77) - removed BeginPopupContextWindow(const char*, int mouse_button, bool also_over_items) in favor of BeginPopupContextWindow(const char*, ImGuiPopupFlags flags) with ImGuiPopupFlags_NoOverItems.
@ -453,7 +453,7 @@ CODE
- ImGuiStyleVar_ChildWindowRounding -> use ImGuiStyleVar_ChildRounding
- ImGuiTreeNodeFlags_AllowOverlapMode -> use ImGuiTreeNodeFlags_AllowItemOverlap
- IMGUI_DISABLE_TEST_WINDOWS -> use IMGUI_DISABLE_DEMO_WINDOWS
- 2019/12/08 (1.75) - obsoleted calling ImDrawList::PrimReserve() with a negative count (which was the vaguely documented and rarely if ever used). Instead we added an explicit PrimUnreserve() API.
- 2019/12/08 (1.75) - obsoleted calling ImDrawList::PrimReserve() with a negative count (which was vaguely documented and rarely if ever used). Instead, we added an explicit PrimUnreserve() API.
- 2019/12/06 (1.75) - removed implicit default parameter to IsMouseDragging(int button = 0) to be consistent with other mouse functions (none of the other functions have it).
- 2019/11/21 (1.74) - ImFontAtlas::AddCustomRectRegular() now requires an ID larger than 0x110000 (instead of 0x10000) to conform with supporting Unicode planes 1-16 in a future update. ID below 0x110000 will now assert.
- 2019/11/19 (1.74) - renamed IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS to IMGUI_DISABLE_DEFAULT_FORMAT_FUNCTIONS for consistency.
@ -481,7 +481,7 @@ CODE
- 2019/04/29 (1.70) - removed GetContentRegionAvailWidth(), use GetContentRegionAvail().x instead. Kept inline redirection function (will obsolete).
- 2019/03/04 (1.69) - renamed GetOverlayDrawList() to GetForegroundDrawList(). Kept redirection function (will obsolete).
- 2019/02/26 (1.69) - renamed ImGuiColorEditFlags_RGB/ImGuiColorEditFlags_HSV/ImGuiColorEditFlags_HEX to ImGuiColorEditFlags_DisplayRGB/ImGuiColorEditFlags_DisplayHSV/ImGuiColorEditFlags_DisplayHex. Kept redirection enums (will obsolete).
- 2019/02/14 (1.68) - made it illegal/assert when io.DisplayTime == 0.0f (with an exception for the first frame). If for some reason your time step calculation gives you a zero value, replace it with an arbitrary small value!
- 2019/02/14 (1.68) - made it illegal/assert when io.DisplayTime == 0.0f (with an exception for the first frame). If for some reason your time step calculation gives you a zero value, replace it with an arbitrarily small value!
- 2019/02/01 (1.68) - removed io.DisplayVisibleMin/DisplayVisibleMax (which were marked obsolete and removed from viewport/docking branch already).
- 2019/01/06 (1.67) - renamed io.InputCharacters[], marked internal as was always intended. Please don't access directly, and use AddInputCharacter() instead!
- 2019/01/06 (1.67) - renamed ImFontAtlas::GlyphRangesBuilder to ImFontGlyphRangesBuilder. Kept redirection typedef (will obsolete).
@ -579,9 +579,9 @@ CODE
- 2016/11/06 (1.50) - BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
- 2016/10/15 (1.50) - avoid 'void* user_data' parameter to io.SetClipboardTextFn/io.GetClipboardTextFn pointers. We pass io.ClipboardUserData to it.
- 2016/09/25 (1.50) - style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
- 2016/07/30 (1.50) - SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
- 2016/07/30 (1.50) - SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully, breakage should be minimal.
- 2016/05/12 (1.49) - title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore.
If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you, otherwise if <1.0f you need tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you, otherwise if <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color:
ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col) { float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w)), k = title_bg_col.w / new_a; return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a); }
If this is confusing, pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.
@ -589,7 +589,7 @@ CODE
- 2016/05/02 (1.49) - renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(), no redirection.
- 2016/05/01 (1.49) - obsoleted old signature of CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false) as extra parameters were badly designed and rarely used. You can replace the "default_open = true" flag in new API with CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen).
- 2016/04/26 (1.49) - changed ImDrawList::PushClipRect(ImVec4 rect) to ImDrawList::PushClipRect(Imvec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false). Note that higher-level ImGui::PushClipRect() is preferable because it will clip at logic/widget level, whereas ImDrawList::PushClipRect() only affect your renderer.
- 2016/04/03 (1.48) - removed style.WindowFillAlphaDefault setting which was redundant. Bake default BG alpha inside style.Colors[ImGuiCol_WindowBg] and all other Bg color values. (ref github issue #337).
- 2016/04/03 (1.48) - removed style.WindowFillAlphaDefault setting which was redundant. Bake default BG alpha inside style.Colors[ImGuiCol_WindowBg] and all other Bg color values. (ref GitHub issue #337).
- 2016/04/03 (1.48) - renamed ImGuiCol_TooltipBg to ImGuiCol_PopupBg, used by popups/menus and tooltips. popups/menus were previously using ImGuiCol_WindowBg. (ref github issue #337)
- 2016/03/21 (1.48) - renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete).
- 2016/03/02 (1.48) - InputText() completion/history/always callbacks: if you modify the text buffer manually (without using DeleteChars()/InsertChars() helper) you need to maintain the BufTextLen field. added an assert.
@ -620,7 +620,7 @@ CODE
- 2015/07/02 (1.42) - renamed SetScrollPosHere() to SetScrollFromCursorPos(). Kept inline redirection function (will obsolete).
- 2015/07/02 (1.42) - renamed GetScrollPosY() to GetScrollY(). Necessary to reduce confusion along with other scrolling functions, because positions (e.g. cursor position) are not equivalent to scrolling amount.
- 2015/06/14 (1.41) - changed ImageButton() default bg_col parameter from (0,0,0,1) (black) to (0,0,0,0) (transparent) - makes a difference when texture have transparence
- 2015/06/14 (1.41) - changed Selectable() API from (label, selected, size) to (label, selected, flags, size). Size override should have been rarely be used. Sorry!
- 2015/06/14 (1.41) - changed Selectable() API from (label, selected, size) to (label, selected, flags, size). Size override should have been rarely used. Sorry!
- 2015/05/31 (1.40) - renamed GetWindowCollapsed() to IsWindowCollapsed() for consistency. Kept inline redirection function (will obsolete).
- 2015/05/31 (1.40) - renamed IsRectClipped() to IsRectVisible() for consistency. Note that return value is opposite! Kept inline redirection function (will obsolete).
- 2015/05/27 (1.40) - removed the third 'repeat_if_held' parameter from Button() - sorry! it was rarely used and inconsistent. Use PushButtonRepeat(true) / PopButtonRepeat() to enable repeat on desired buttons.
@ -675,7 +675,7 @@ CODE
===========
Q: Where is the documentation?
A: This library is poorly documented at the moment and expects of the user to be acquainted with C/C++.
A: This library is poorly documented at the moment and expects the user to be acquainted with C/C++.
- Run the examples/ and explore them.
- See demo code in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function.
- The demo covers most features of Dear ImGui, so you can read the code and see its output.
@ -685,7 +685,7 @@ CODE
- The Wiki (https://github.com/ocornut/imgui/wiki) has many resources and links.
- The Glossary (https://github.com/ocornut/imgui/wiki/Glossary) page also may be useful.
- Your programming IDE is your friend, find the type or function declaration to find comments
associated to it.
associated with it.
Q: What is this library called?
Q: Which version should I get?
@ -698,15 +698,15 @@ CODE
Q: How to get started?
A: Read 'PROGRAMMER GUIDE' above. Read examples/README.txt.
Q: How can I tell whether to dispatch mouse/keyboard to Dear ImGui or to my application?
Q: How can I tell whether to dispatch mouse/keyboard to Dear ImGui or my application?
A: You should read the 'io.WantCaptureMouse', 'io.WantCaptureKeyboard' and 'io.WantTextInput' flags!
>> See https://www.dearimgui.org/faq for fully detailed answer. You really want to read this.
>> See https://www.dearimgui.org/faq for a fully detailed answer. You really want to read this.
Q. How can I enable keyboard controls?
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 little squares are showing instead of text..
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..
Q: I integrated Dear ImGui in my engine and little squares are showing instead of text...
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...
>> See https://www.dearimgui.org/faq
Q&A: Usage
@ -746,14 +746,14 @@ CODE
Q: How can I help?
A: - Businesses: please reach out to "contact AT dearimgui.org" if you work in a place using Dear ImGui!
We can discuss ways for your company to fund development via invoiced technical support, maintenance or sponsoring contacts.
This is among the most useful thing you can do for Dear ImGui. With increased funding we can hire more people working on this project.
This is among the most useful thing you can do for Dear ImGui. With increased funding, we can hire more people working on this project.
- Individuals: you can support continued development via PayPal donations. See README.
- If you are experienced with Dear ImGui and C++, look at the github issues, look at the Wiki, read docs/TODO.txt
- If you are experienced with Dear ImGui and C++, look at the GitHub issues, look at the Wiki, read docs/TODO.txt
and see how you want to help and can help!
- Disclose your usage of Dear ImGui via a dev blog post, a tweet, a screenshot, a mention somewhere etc.
You may post screenshot or links in the gallery threads (github.com/ocornut/imgui/issues/3488). Visuals are ideal as they inspire other programmers.
But even without visuals, disclosing your use of dear imgui help the library grow credibility, and help other teams and programmers with taking decisions.
- If you have issues or if you need to hack into the library, even if you don't expect any support it is useful that you share your issues (on github or privately).
But even without visuals, disclosing your use of dear imgui helps the library grow credibility, and help other teams and programmers with taking decisions.
- If you have issues or if you need to hack into the library, even if you don't expect any support it is useful that you share your issues (on GitHub or privately).
*/
@ -933,7 +933,7 @@ static void UpdateViewportsNewFrame();
// DLL users:
// - Heaps and globals are not shared across DLL boundaries!
// - You will need to call SetCurrentContext() + SetAllocatorFunctions() for each static/DLL boundary you are calling from.
// - Same apply for hot-reloading mechanisms that are reliant on reloading DLL (note that many hot-reloading mechanism works without DLL).
// - Same applies for hot-reloading mechanisms that are reliant on reloading DLL (note that many hot-reloading mechanisms work without DLL).
// - Using Dear ImGui via a shared library is not recommended, because of function call overhead and because we don't guarantee backward nor forward ABI compatibility.
// - Confused? In a debugger: add GImGui to your watch window and notice how its value changes depending on your current location (which DLL boundary you are in).
@ -946,16 +946,16 @@ static void UpdateViewportsNewFrame();
// struct ImGuiContext;
// extern thread_local ImGuiContext* MyImGuiTLS;
// #define GImGui MyImGuiTLS
// And then define MyImGuiTLS in one of your cpp file. Note that thread_local is a C++11 keyword, earlier C++ uses compiler-specific keyword.
// - Future development aim to make this context pointer explicit to all calls. Also read https://github.com/ocornut/imgui/issues/586
// - If you need a finite number of contexts, you may compile and use multiple instances of the ImGui code from different namespace.
// And then define MyImGuiTLS in one of your cpp files. Note that thread_local is a C++11 keyword, earlier C++ uses compiler-specific keyword.
// - Future development aims to make this context pointer explicit to all calls. Also read https://github.com/ocornut/imgui/issues/586
// - If you need a finite number of contexts, you may compile and use multiple instances of the ImGui code from a different namespace.
// - DLL users: read comments above.
#ifndef GImGui
ImGuiContext* GImGui = NULL;
#endif
// Memory Allocator functions. Use SetAllocatorFunctions() to change them.
// - You probably don't want to modify those mid-program, and if you use global/static e.g. ImVector<> instances you may need to keep them accessible during program destruction.
// - You probably don't want to modify that mid-program, and if you use global/static e.g. ImVector<> instances you may need to keep them accessible during program destruction.
// - DLL users: read comments above.
#ifndef IMGUI_DISABLE_DEFAULT_ALLOCATORS
static void* MallocWrapper(size_t size, void* user_data) { IM_UNUSED(user_data); return malloc(size); }

8
imgui_demo.cpp
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@ -6,7 +6,7 @@
// - Newcomers, read 'Programmer guide' in imgui.cpp for notes on how to setup Dear ImGui in your codebase.
// - Call and read ImGui::ShowDemoWindow() in imgui_demo.cpp. All applications in examples/ are doing that.
// Read imgui.cpp for more details, documentation and comments.
// Get latest version at https://github.com/ocornut/imgui
// Get the latest version at https://github.com/ocornut/imgui
// Message to the person tempted to delete this file when integrating Dear ImGui into their codebase:
// Do NOT remove this file from your project! Think again! It is the most useful reference code that you and other
@ -16,19 +16,19 @@
// Everything in this file will be stripped out by the linker if you don't call ImGui::ShowDemoWindow().
// If you want to link core Dear ImGui in your shipped builds but want a thorough guarantee that the demo will not be
// linked, you can setup your imconfig.h with #define IMGUI_DISABLE_DEMO_WINDOWS and those functions will be empty.
// In other situation, whenever you have Dear ImGui available you probably want this to be available for reference.
// In another situation, whenever you have Dear ImGui available you probably want this to be available for reference.
// Thank you,
// -Your beloved friend, imgui_demo.cpp (which you won't delete)
// Message to beginner C/C++ programmers about the meaning of the 'static' keyword:
// In this demo code, we frequently we use 'static' variables inside functions. A static variable persist across calls,
// In this demo code, we frequently use 'static' variables inside functions. A static variable persists across calls,
// so it is essentially like a global variable but declared inside the scope of the function. We do this as a way to
// gather code and data in the same place, to make the demo source code faster to read, faster to write, and smaller
// in size. It also happens to be a convenient way of storing simple UI related information as long as your function
// doesn't need to be reentrant or used in multiple threads. This might be a pattern you will want to use in your code,
// but most of the real data you would be editing is likely going to be stored outside your functions.
// The Demo code in this file is designed to be easy to copy-and-paste in into your application!
// The Demo code in this file is designed to be easy to copy-and-paste into your application!
// Because of this:
// - We never omit the ImGui:: prefix when calling functions, even though most code here is in the same namespace.
// - We try to declare static variables in the local scope, as close as possible to the code using them.

14
imgui_tables.cpp
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@ -73,7 +73,7 @@ Index of this file:
// (Read carefully because this is subtle but it does make sense!)
//-----------------------------------------------------------------------------
// About 'outer_size':
// Its meaning needs to differ slightly depending of if we are using ScrollX/ScrollY flags.
// Its meaning needs to differ slightly depending on if we are using ScrollX/ScrollY flags.
// Default value is ImVec2(0.0f, 0.0f).
// X
// - outer_size.x <= 0.0f -> Right-align from window/work-rect right-most edge. With -FLT_MIN or 0.0f will align exactly on right-most edge.
@ -90,7 +90,7 @@ Index of this file:
// Outer size is also affected by the NoHostExtendX/NoHostExtendY flags.
// Important to that note how the two flags have slightly different behaviors!
// - ImGuiTableFlags_NoHostExtendX -> Make outer width auto-fit to columns (overriding outer_size.x value). Only available when ScrollX/ScrollY are disabled and Stretch columns are not used.
// - ImGuiTableFlags_NoHostExtendY -> Make outer height stop exactly at outer_size.y (prevent auto-extending table past the limit). Only available when ScrollX/ScrollY are disabled. Data below the limit will be clipped and not visible.
// - ImGuiTableFlags_NoHostExtendY -> Make outer height stop exactly at outer_size.y (prevent auto-extending table past the limit). Only available when ScrollX/ScrollY is disabled. Data below the limit will be clipped and not visible.
// In theory ImGuiTableFlags_NoHostExtendY could be the default and any non-scrolling tables with outer_size.y != 0.0f would use exact height.
// This would be consistent but perhaps less useful and more confusing (as vertically clipped items are not easily noticeable)
//-----------------------------------------------------------------------------
@ -132,7 +132,7 @@ Index of this file:
// - the typical use of mixing sizing policies is: any number of LEADING Fixed columns, followed by one or two TRAILING Stretch columns.
// - using mixed policies with ScrollX does not make much sense, as using Stretch columns with ScrollX does not make much sense in the first place!
// that is, unless 'inner_width' is passed to BeginTable() to explicitly provide a total width to layout columns in.
// - when using ImGuiTableFlags_SizingFixedSame with mixed columns, only the Fixed/Auto columns will match their widths to the maximum contents width.
// - when using ImGuiTableFlags_SizingFixedSame with mixed columns, only the Fixed/Auto columns will match their widths to the width of the maximum contents.
// - when using ImGuiTableFlags_SizingStretchSame with mixed columns, only the Stretch columns will match their weight/widths.
//-----------------------------------------------------------------------------
// About using column width:
@ -140,9 +140,9 @@ Index of this file:
// - you may use GetContentRegionAvail().x to query the width available in a given column.
// - right-side alignment features such as SetNextItemWidth(-x) or PushItemWidth(-x) will rely on this width.
// If the column is not resizable and has no width specified with TableSetupColumn():
// - its width will be automatic and be the set to the max of items submitted.
// - its width will be automatic and be set to the max of items submitted.
// - therefore you generally cannot have ALL items of the columns use e.g. SetNextItemWidth(-FLT_MIN).
// - but if the column has one or more item of known/fixed size, this will become the reference width used by SetNextItemWidth(-FLT_MIN).
// - but if the column has one or more items of known/fixed size, this will become the reference width used by SetNextItemWidth(-FLT_MIN).
//-----------------------------------------------------------------------------
@ -161,7 +161,7 @@ Index of this file:
// - Both TableSetColumnIndex() and TableNextColumn() return true when the column is visible or performing
// width measurements. Otherwise, you may skip submitting the contents of a cell/column, BUT ONLY if you know
// it is not going to contribute to row height.
// In many situations, you may skip submitting contents for every columns but one (e.g. the first one).
// In many situations, you may skip submitting contents for every column but one (e.g. the first one).
// - Case A: column is not hidden by user, and at least partially in sight (most common case).
// - Case B: column is clipped / out of sight (because of scrolling or parent ClipRect): TableNextColumn() return false as a hint but we still allow layout output.
// - Case C: column is hidden explicitly by the user (e.g. via the context menu, or _DefaultHide column flag, etc.).
@ -172,7 +172,7 @@ Index of this file:
// ClipRect: normal zero-width zero-width -> [internal] when ClipRect is zero, ItemAdd() will return false and most widgets will early out mid-way.
// ImDrawList output: normal dummy dummy -> [internal] when using the dummy channel, ImDrawList submissions (if any) will be wasted (because cliprect is zero-width anyway).
//
// - We need distinguish those cases because non-hidden columns that are clipped outside of scrolling bounds should still contribute their height to the row.
// - We need to distinguish those cases because non-hidden columns that are clipped outside of scrolling bounds should still contribute their height to the row.
// However, in the majority of cases, the contribution to row height is the same for all columns, or the tallest cells are known by the programmer.
//-----------------------------------------------------------------------------
// About clipping/culling of whole Tables:

2
misc/freetype/imgui_freetype.cpp
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@ -1,7 +1,7 @@
// dear imgui: FreeType font builder (used as a replacement for the stb_truetype builder)
// (code)
// Get latest version at https://github.com/ocornut/imgui/tree/master/misc/freetype
// Get the latest version at https://github.com/ocornut/imgui/tree/master/misc/freetype
// Original code by @vuhdo (Aleksei Skriabin). Improvements by @mikesart. Maintained since 2019 by @ocornut.
// CHANGELOG