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Loading TTF file with stb_truetype. Broke setup API slightly. Font baked, packed with space for custom data. Embeds compressed ProggyClean.

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This commit is contained in:
ocornut 2015-01-08 23:35:01 +00:00
parent dd8a7655f5
commit b3a208901a
19 changed files with 3953 additions and 5249 deletions
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2
examples/directx11_example/directx11_example.vcxproj
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@ -68,8 +68,6 @@
<ItemGroup>
<ClInclude Include="..\..\imconfig.h" />
<ClInclude Include="..\..\imgui.h" />
<ClInclude Include="..\..\stb_textedit.h" />
<ClInclude Include="..\shared\stb_image.h" />
</ItemGroup>
<ItemGroup>
<ClCompile Include="..\..\imgui.cpp" />

6
examples/directx11_example/directx11_example.vcxproj.filters
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@ -15,12 +15,6 @@
<ClInclude Include="..\..\imgui.h">
<Filter>imgui</Filter>
</ClInclude>
<ClInclude Include="..\..\stb_textedit.h">
<Filter>imgui</Filter>
</ClInclude>
<ClInclude Include="..\shared\stb_image.h">
<Filter>sources</Filter>
</ClInclude>
</ItemGroup>
<ItemGroup>
<ClCompile Include="..\..\imgui.cpp">

37
examples/directx11_example/main.cpp
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@ -1,9 +1,6 @@
// ImGui - standalone example application for DirectX 11
#include <windows.h>
#define STB_IMAGE_STATIC
#define STB_IMAGE_IMPLEMENTATION
#include "../shared/stb_image.h" // for .png loading
#include "../../imgui.h"
// DirectX 11
@ -290,8 +287,9 @@ HRESULT InitDeviceD3D(HWND hWnd)
\
float4 main(PS_INPUT input) : SV_Target\
{\
float4 out_col = texture0.Sample(sampler0, input.uv);\
return input.col * out_col;\
float4 out_col = input.col; \
out_col.w *= texture0.Sample(sampler0, input.uv).w; \
return out_col; \
}";
D3DCompile(pixelShader, strlen(pixelShader), NULL, NULL, NULL, "main", "ps_5_0", 0, 0, &g_pPixelShaderBlob, NULL);
@ -427,23 +425,22 @@ void InitImGui()
}
}
// Load font texture
// Default font (embedded in code)
const void* png_data;
unsigned int png_size;
ImGui::GetDefaultFontData(NULL, NULL, &png_data, &png_size);
int tex_x, tex_y, tex_comp;
void* tex_data = stbi_load_from_memory((const unsigned char*)png_data, (int)png_size, &tex_x, &tex_y, &tex_comp, 0);
IM_ASSERT(tex_data != NULL);
// Load font
io.Font = new ImFont();
io.Font->LoadDefault();
//io.Font->LoadFromFileTTF("myfont.ttf", font_size_px, ImFont::GetGlyphRangesDefault());
//io.Font->DisplayOffset.y += 0.0f;
IM_ASSERT(io.Font->IsLoaded());
// Copy font texture
{
D3D11_TEXTURE2D_DESC desc;
ZeroMemory(&desc, sizeof(desc));
desc.Width = tex_x;
desc.Height = tex_y;
desc.Width = io.Font->TexWidth;
desc.Height = io.Font->TexHeight;
desc.MipLevels = 1;
desc.ArraySize = 1;
desc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
desc.Format = DXGI_FORMAT_A8_UNORM;
desc.SampleDesc.Count = 1;
desc.Usage = D3D11_USAGE_DEFAULT;
desc.BindFlags = D3D11_BIND_SHADER_RESOURCE;
@ -451,15 +448,15 @@ void InitImGui()
ID3D11Texture2D *pTexture = NULL;
D3D11_SUBRESOURCE_DATA subResource;
subResource.pSysMem = tex_data;
subResource.SysMemPitch = tex_x * 4;
subResource.pSysMem = io.Font->TexPixels;
subResource.SysMemPitch = desc.Width * 1;
subResource.SysMemSlicePitch = 0;
g_pd3dDevice->CreateTexture2D(&desc, &subResource, &pTexture);
// Create texture view
D3D11_SHADER_RESOURCE_VIEW_DESC srvDesc;
ZeroMemory(&srvDesc, sizeof(srvDesc));
srvDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
srvDesc.Format = DXGI_FORMAT_A8_UNORM;
srvDesc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2D;
srvDesc.Texture2D.MipLevels = desc.MipLevels;
srvDesc.Texture2D.MostDetailedMip = 0;
@ -471,7 +468,7 @@ void InitImGui()
{
D3D11_SAMPLER_DESC desc;
ZeroMemory(&desc, sizeof(desc));
desc.Filter = D3D11_FILTER_MIN_MAG_MIP_POINT;
desc.Filter = D3D11_FILTER_MIN_MAG_POINT_MIP_LINEAR;
desc.AddressU = D3D11_TEXTURE_ADDRESS_WRAP;
desc.AddressV = D3D11_TEXTURE_ADDRESS_WRAP;
desc.AddressW = D3D11_TEXTURE_ADDRESS_WRAP;

1
examples/directx9_example/directx9_example.vcxproj
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@ -76,7 +76,6 @@
<ItemGroup>
<ClInclude Include="..\..\imconfig.h" />
<ClInclude Include="..\..\imgui.h" />
<ClInclude Include="..\..\stb_textedit.h" />
</ItemGroup>
<Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
<ImportGroup Label="ExtensionTargets">

3
examples/directx9_example/directx9_example.vcxproj.filters
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@ -24,8 +24,5 @@
<ClInclude Include="..\..\imgui.h">
<Filter>imgui</Filter>
</ClInclude>
<ClInclude Include="..\..\stb_textedit.h">
<Filter>imgui</Filter>
</ClInclude>
</ItemGroup>
</Project>

33
examples/directx9_example/main.cpp
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@ -73,12 +73,13 @@ static void ImImpl_RenderDrawLists(ImDrawList** const cmd_lists, int cmd_lists_c
// Setup texture
g_pd3dDevice->SetTexture( 0, g_pTexture );
g_pd3dDevice->SetTextureStageState( 0, D3DTSS_COLOROP, D3DTOP_MODULATE );
g_pd3dDevice->SetTextureStageState( 0, D3DTSS_COLORARG1, D3DTA_TEXTURE );
g_pd3dDevice->SetTextureStageState( 0, D3DTSS_COLORARG2, D3DTA_DIFFUSE );
g_pd3dDevice->SetTextureStageState( 0, D3DTSS_COLOROP, D3DTOP_SELECTARG1 );
g_pd3dDevice->SetTextureStageState( 0, D3DTSS_COLORARG1, D3DTA_DIFFUSE );
g_pd3dDevice->SetTextureStageState( 0, D3DTSS_ALPHAOP, D3DTOP_MODULATE );
g_pd3dDevice->SetTextureStageState( 0, D3DTSS_ALPHAARG1, D3DTA_TEXTURE );
g_pd3dDevice->SetTextureStageState( 0, D3DTSS_ALPHAARG2, D3DTA_DIFFUSE );
g_pd3dDevice->SetSamplerState( 0, D3DSAMP_MINFILTER, D3DTEXF_LINEAR );
g_pd3dDevice->SetSamplerState( 0, D3DSAMP_MAGFILTER, D3DTEXF_LINEAR );
// Setup orthographic projection matrix
D3DXMATRIXA16 mat;
@ -213,15 +214,21 @@ void InitImGui()
return;
}
// Load font texture
const void* png_data;
unsigned int png_size;
ImGui::GetDefaultFontData(NULL, NULL, &png_data, &png_size);
if (D3DXCreateTextureFromFileInMemory(g_pd3dDevice, png_data, png_size, &g_pTexture) < 0)
{
IM_ASSERT(0);
return;
}
// Load font
io.Font = new ImFont();
io.Font->LoadDefault();
//io.Font->LoadFromFileTTF("myfont.ttf", font_size_px, ImFont::GetGlyphRangesDefault());
io.Font->LoadFromFileTTF("../../extra_fonts/ArialUni.ttf", 20.0f, ImFont::GetGlyphRangesDefault());
//io.Font->DisplayOffset.y += 0.0f;
IM_ASSERT(io.Font->IsLoaded());
// Copy font texture
if (D3DXCreateTexture(g_pd3dDevice, io.Font->TexWidth, io.Font->TexHeight, 1, D3DUSAGE_DYNAMIC, D3DFMT_A8, D3DPOOL_DEFAULT, &g_pTexture) < 0) { IM_ASSERT(0); return; }
D3DLOCKED_RECT tex_locked_rect;
if (g_pTexture->LockRect(0, &tex_locked_rect, NULL, 0) != D3D_OK) { IM_ASSERT(0); return; }
for (int y = 0; y < io.Font->TexHeight; y++)
memcpy((unsigned char *)tex_locked_rect.pBits + tex_locked_rect.Pitch * y, io.Font->TexPixels + io.Font->TexWidth * y, io.Font->TexWidth);
g_pTexture->UnlockRect(0);
}
INT64 ticks_per_second = 0;
@ -330,7 +337,7 @@ int WINAPI wWinMain(HINSTANCE hInst, HINSTANCE, LPWSTR, int)
// 3. Show the ImGui test window. Most of the sample code is in ImGui::ShowTestWindow()
if (show_test_window)
{
ImGui::SetNextWindowPos(ImVec2(650, 20), ImGuiSetCondition_FirstUseEver);
ImGui::SetNextWindowPos(ImVec2(650, 20), ImGuiSetCondition_FirstUseEver);
ImGui::ShowTestWindow(&show_test_window);
}

53
examples/opengl3_example/main.cpp
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@ -8,9 +8,7 @@
#endif
#include "../../imgui.h"
#define STB_IMAGE_STATIC
#define STB_IMAGE_IMPLEMENTATION
#include "../shared/stb_image.h" // stb_image.h for PNG loading
#include <stdio.h>
// Glfw/Glew
#define GLEW_STATIC
@ -24,7 +22,7 @@ static bool mousePressed[2] = { false, false };
// Shader variables
static int shader_handle, vert_handle, frag_handle;
static int texture_location, ortho_location;
static int texture_location, proj_mtx_location;
static int position_location, uv_location, colour_location;
static size_t vbo_max_size = 20000;
static unsigned int vbo_handle, vao_handle;
@ -62,7 +60,7 @@ static void ImImpl_RenderDrawLists(ImDrawList** const cmd_lists, int cmd_lists_c
};
glUseProgram(shader_handle);
glUniform1i(texture_location, 0);
glUniformMatrix4fv(ortho_location, 1, GL_FALSE, &ortho_projection[0][0]);
glUniformMatrix4fv(proj_mtx_location, 1, GL_FALSE, &ortho_projection[0][0]);
// Grow our buffer according to what we need
size_t total_vtx_count = 0;
@ -184,28 +182,29 @@ void InitGL()
const GLchar *vertex_shader =
"#version 330\n"
"uniform mat4 ortho;\n"
"uniform mat4 ProjMtx;\n"
"in vec2 Position;\n"
"in vec2 UV;\n"
"in vec4 Colour;\n"
"in vec4 Color;\n"
"out vec2 Frag_UV;\n"
"out vec4 Frag_Colour;\n"
"out vec4 Frag_Color;\n"
"void main()\n"
"{\n"
" Frag_UV = UV;\n"
" Frag_Colour = Colour;\n"
" gl_Position = ortho*vec4(Position.xy,0,1);\n"
" Frag_Color = Color;\n"
" gl_Position = ProjMtx * vec4(Position.xy,0,1);\n"
"}\n";
const GLchar* fragment_shader =
"#version 330\n"
"uniform sampler2D Texture;\n"
"in vec2 Frag_UV;\n"
"in vec4 Frag_Colour;\n"
"out vec4 FragColor;\n"
"in vec4 Frag_Color;\n"
"out vec4 Out_Color;\n"
"void main()\n"
"{\n"
" FragColor = Frag_Colour * texture( Texture, Frag_UV.st);\n"
" Out_Color = Frag_Color;\n"
" Out_Color.w *= texture( Texture, Frag_UV.st).x;\n"
"}\n";
shader_handle = glCreateProgram();
@ -220,10 +219,10 @@ void InitGL()
glLinkProgram(shader_handle);
texture_location = glGetUniformLocation(shader_handle, "Texture");
ortho_location = glGetUniformLocation(shader_handle, "ortho");
proj_mtx_location = glGetUniformLocation(shader_handle, "ProjMtx");
position_location = glGetAttribLocation(shader_handle, "Position");
uv_location = glGetAttribLocation(shader_handle, "UV");
colour_location = glGetAttribLocation(shader_handle, "Colour");
colour_location = glGetAttribLocation(shader_handle, "Color");
glGenBuffers(1, &vbo_handle);
glBindBuffer(GL_ARRAY_BUFFER, vbo_handle);
@ -270,18 +269,20 @@ void InitImGui()
io.SetClipboardTextFn = ImImpl_SetClipboardTextFn;
io.GetClipboardTextFn = ImImpl_GetClipboardTextFn;
// Load font texture
// Load font
io.Font = new ImFont();
io.Font->LoadDefault();
//io.Font->LoadFromFileTTF("myfont.ttf", font_size_px, ImFont::GetGlyphRangesDefault());
//io.Font->DisplayOffset.y += 0.0f;
IM_ASSERT(io.Font->IsLoaded());
// Copy font texture
glGenTextures(1, &fontTex);
glBindTexture(GL_TEXTURE_2D, fontTex);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
const void* png_data;
unsigned int png_size;
ImGui::GetDefaultFontData(NULL, NULL, &png_data, &png_size);
int tex_x, tex_y, tex_comp;
void* tex_data = stbi_load_from_memory((const unsigned char*)png_data, (int)png_size, &tex_x, &tex_y, &tex_comp, 0);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, tex_x, tex_y, 0, GL_RGBA, GL_UNSIGNED_BYTE, tex_data);
stbi_image_free(tex_data);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
IM_ASSERT(io.Font->IsLoaded());
glTexImage2D(GL_TEXTURE_2D, 0, GL_RED, io.Font->TexWidth, io.Font->TexHeight, 0, GL_RED, GL_UNSIGNED_BYTE, io.Font->TexPixels);
}
void UpdateImGui()
@ -364,7 +365,7 @@ int main(int argc, char** argv)
// 3. Show the ImGui test window. Most of the sample code is in ImGui::ShowTestWindow()
if (show_test_window)
{
ImGui::SetNextWindowPos(ImVec2(650, 20), ImGuiSetCondition_FirstUseEver);
ImGui::SetNextWindowPos(ImVec2(650, 20), ImGuiSetCondition_FirstUseEver);
ImGui::ShowTestWindow(&show_test_window);
}

1
examples/opengl3_example/opengl3_example.vcxproj
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@ -74,7 +74,6 @@
<ItemGroup>
<ClInclude Include="..\..\imconfig.h" />
<ClInclude Include="..\..\imgui.h" />
<ClInclude Include="..\..\stb_textedit.h" />
</ItemGroup>
<Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
<ImportGroup Label="ExtensionTargets">

3
examples/opengl3_example/opengl3_example.vcxproj.filters
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@ -24,8 +24,5 @@
<ClInclude Include="..\..\imgui.h">
<Filter>imgui</Filter>
</ClInclude>
<ClInclude Include="..\..\stb_textedit.h">
<Filter>imgui</Filter>
</ClInclude>
</ItemGroup>
</Project>

BIN
examples/opengl_example/ProggyClean.ttf Normal file
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48
examples/opengl_example/main.cpp
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@ -8,9 +8,7 @@
#endif
#include "../../imgui.h"
#define STB_IMAGE_STATIC
#define STB_IMAGE_IMPLEMENTATION
#include "../shared/stb_image.h" // stb_image.h for PNG loading
#include <stdio.h>
// Glfw/Glew
#define GLEW_STATIC
@ -180,42 +178,20 @@ void InitImGui()
io.SetClipboardTextFn = ImImpl_SetClipboardTextFn;
io.GetClipboardTextFn = ImImpl_GetClipboardTextFn;
// Load font texture
glGenTextures(1, &fontTex);
glBindTexture(GL_TEXTURE_2D, fontTex);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
#if 1
// Default font (embedded in code)
const void* png_data;
unsigned int png_size;
ImGui::GetDefaultFontData(NULL, NULL, &png_data, &png_size);
int tex_x, tex_y, tex_comp;
void* tex_data = stbi_load_from_memory((const unsigned char*)png_data, (int)png_size, &tex_x, &tex_y, &tex_comp, 0);
IM_ASSERT(tex_data != NULL);
#else
// Custom font from filesystem
// Load font
io.Font = new ImFont();
io.Font->LoadFromFile("../../extra_fonts/mplus-2m-medium_18.fnt");
io.Font->LoadDefault();
//io.Font->LoadFromFileTTF("myfont.ttf", font_size_px, ImFont::GetGlyphRangesDefault());
//io.Font->DisplayOffset.y += 0.0f;
IM_ASSERT(io.Font->IsLoaded());
int tex_x, tex_y, tex_comp;
void* tex_data = stbi_load("../../extra_fonts/mplus-2m-medium_18.png", &tex_x, &tex_y, &tex_comp, 0);
IM_ASSERT(tex_data != NULL);
// Automatically find white pixel from the texture we just loaded
// (io.Font->TexUvForWhite needs to contains UV coordinates pointing to a white pixel in order to render solid objects)
for (int tex_data_off = 0; tex_data_off < tex_x*tex_y; tex_data_off++)
if (((unsigned int*)tex_data)[tex_data_off] == 0xffffffff)
{
io.Font->TexUvForWhite = ImVec2((float)(tex_data_off % tex_x)/(tex_x), (float)(tex_data_off / tex_x)/(tex_y));
break;
}
#endif
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, tex_x, tex_y, 0, GL_RGBA, GL_UNSIGNED_BYTE, tex_data);
stbi_image_free(tex_data);
// Copy font texture
glGenTextures(1, &fontTex);
glBindTexture(GL_TEXTURE_2D, fontTex);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
IM_ASSERT(io.Font->IsLoaded());
glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, io.Font->TexWidth, io.Font->TexHeight, 0, GL_ALPHA, GL_UNSIGNED_BYTE, io.Font->TexPixels);
}
void UpdateImGui()

2
examples/opengl_example/opengl_example.vcxproj
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@ -74,8 +74,6 @@
<ItemGroup>
<ClInclude Include="..\..\imconfig.h" />
<ClInclude Include="..\..\imgui.h" />
<ClInclude Include="..\..\stb_textedit.h" />
<ClInclude Include="..\shared\stb_image.h" />
</ItemGroup>
<Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
<ImportGroup Label="ExtensionTargets">

6
examples/opengl_example/opengl_example.vcxproj.filters
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@ -24,11 +24,5 @@
<ClInclude Include="..\..\imgui.h">
<Filter>imgui</Filter>
</ClInclude>
<ClInclude Include="..\..\stb_textedit.h">
<Filter>imgui</Filter>
</ClInclude>
<ClInclude Include="..\shared\stb_image.h">
<Filter>sources</Filter>
</ClInclude>
</ItemGroup>
</Project>

3
examples/shared/README.txt
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@ -1,3 +0,0 @@
stb_image.h is used to load the PNG texture data by
opengl_example
directx11_example

4744
examples/shared/stb_image.h
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939
imgui.cpp
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129
imgui.h
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@ -1,4 +1,4 @@
// ImGui library v1.20
// ImGui library v1.30 wip
// See .cpp file for commentary.
// See ImGui::ShowTestWindow() for sample code.
// Read 'Programmer guide' in .cpp for notes on how to setup ImGui in your codebase.
@ -129,7 +129,7 @@ public:
// - struct ImGuiTextBuffer // Text buffer for logging/accumulating text
// - struct ImGuiStorage // Custom key value storage (if you need to alter open/close states manually)
// - struct ImDrawList // Draw command list
// - struct ImFont // Bitmap font loader
// - struct ImFont // TTF font loader, bake glyphs into bitmap
// ImGui End-user API
// In a namespace so that user can add extra functions (e.g. Value() helpers for your vector or common types)
@ -309,7 +309,6 @@ namespace ImGui
IMGUI_API float GetTime();
IMGUI_API int GetFrameCount();
IMGUI_API const char* GetStyleColName(ImGuiCol idx);
IMGUI_API void GetDefaultFontData(const void** fnt_data, unsigned int* fnt_size, const void** png_data, unsigned int* png_size);
IMGUI_API ImVec2 CalcTextSize(const char* text, const char* text_end = NULL, bool hide_text_after_double_hash = false, float wrap_width = -1.0f);
} // namespace ImGui
@ -729,97 +728,59 @@ struct ImDrawList
IMGUI_API void AddText(ImFont* font, float font_size, const ImVec2& pos, ImU32 col, const char* text_begin, const char* text_end = NULL, float wrap_width = 0.0f);
};
// Bitmap font data loader & renderer into vertices
// Using the .fnt format exported by BMFont
// - tool: http://www.angelcode.com/products/bmfont
// - file-format: http://www.angelcode.com/products/bmfont/doc/file_format.html
// Assume valid file data (won't handle invalid/malicious data)
// Handle a subset of the options, namely:
// - kerning pair are not supported (because some ImGui code does per-character CalcTextSize calls, need to turn it into something more state-ful to allow for kerning)
// TTF font loading and rendering
// NB: kerning pair are not supported (because some ImGui code does per-character CalcTextSize calls, need to turn it into something more state-ful to allow for kerning)
struct ImFont
{
struct FntInfo;
struct FntCommon;
struct FntGlyph;
struct FntKerning;
// Settings
float Scale; // = 1.0f // Base font scale, multiplied by the per-window font scale which you can adjust with SetFontScale()
ImVec2 DisplayOffset; // = (0.0f,0.0f) // Offset font rendering by xx pixels
ImVec2 TexUvForWhite; // = (0.0f,0.0f) // Font texture must have a white pixel at this UV coordinate. Adjust if you are using custom texture.
ImWchar FallbackChar; // = '?' // Replacement glyph is one isn't found.
float Scale; // = 1.0f // Base font scale, multiplied by the per-window font scale which you can adjust with SetFontScale()
ImVec2 DisplayOffset; // = (0.0f,0.0f) // Offset font rendering by xx pixels
ImWchar FallbackChar; // = '?' // Replacement glyph if one isn't found.
// Data
unsigned char* Data; // Raw data, content of .fnt file
size_t DataSize; //
bool DataOwned; //
const FntInfo* Info; // (point into raw data)
const FntCommon* Common; // (point into raw data)
const FntGlyph* Glyphs; // (point into raw data)
size_t GlyphsCount; //
const FntKerning* Kerning; // (point into raw data) - NB: kerning is unsupported
size_t KerningCount; //
ImVector<const char*> Filenames; // (point into raw data)
ImVector<int> IndexLookup; // (built)
const FntGlyph* FallbackGlyph; // == FindGlyph(FontFallbackChar)
// Texture data
unsigned char* TexPixels; // 1 byte, 1 component per pixel. Total byte size of TexWidth * TexHeight
int TexWidth;
int TexHeight;
ImVec2 TexExtraDataPos; // Position of our rectangle where we draw non-font graphics
ImVec2 TexUvWhitePixel; // Texture coordinates to a white pixel (part of the TexExtraData block)
struct Glyph
{
ImWchar Codepoint;
signed short XAdvance;
signed short Width, Height;
signed short XOffset, YOffset;
float U0, V0, U1, V1; // Texture coordinates
};
// Runtime data
float FontSize; // Height of characters
ImVector<Glyph> Glyphs;
ImVector<int> IndexLookup;
const Glyph* FallbackGlyph; // == FindGlyph(FontFallbackChar)
// Methods
IMGUI_API ImFont();
IMGUI_API ~ImFont() { Clear(); }
IMGUI_API ~ImFont();
IMGUI_API bool LoadDefault();
IMGUI_API bool LoadFromFileTTF(const char* filename, float size_pixels, const ImWchar* glyph_ranges = NULL, int font_no = 0);
IMGUI_API bool LoadFromMemoryTTF(const void* data, size_t data_size, float size_pixels, const ImWchar* glyph_ranges = NULL, int font_no = 0);
IMGUI_API void Clear();
IMGUI_API void BuildLookupTable();
IMGUI_API const Glyph* FindGlyph(unsigned short c) const;
IMGUI_API bool IsLoaded() const { return TexPixels != NULL && !Glyphs.empty(); }
IMGUI_API bool LoadFromMemory(const void* data, size_t data_size);
IMGUI_API bool LoadFromFile(const char* filename);
IMGUI_API void Clear();
IMGUI_API void BuildLookupTable();
IMGUI_API const FntGlyph* FindGlyph(unsigned short c) const;
IMGUI_API bool IsLoaded() const { return Info != NULL && Common != NULL && Glyphs != NULL; }
// Retrieve list of common Unicode ranges (2 value per range, values are inclusive, zero-terminated list)
static IMGUI_API const ImWchar* GetGlyphRangesDefault(); // Basic Latin, Extended Latin + a few more
static IMGUI_API const ImWchar* GetGlyphRangesJapanese(); // Default + Hiragana, Katakana, Half-Width, Selection of 1946 Ideographs
static IMGUI_API const ImWchar* GetGlyphRangesChinese(); // Japanese + full set of about 21000 CJK Unified Ideographs
// 'max_width' stops rendering after a certain width (could be turned into a 2d size). FLT_MAX to disable.
// 'wrap_width' enable automatic word-wrapping across multiple lines to fit into given width. 0.0f to disable.
IMGUI_API ImVec2 CalcTextSizeA(float size, float max_width, float wrap_width, const char* text_begin, const char* text_end = NULL, const char** remaining = NULL) const; // utf8
IMGUI_API ImVec2 CalcTextSizeW(float size, float max_width, const ImWchar* text_begin, const ImWchar* text_end, const ImWchar** remaining = NULL) const; // wchar
IMGUI_API void RenderText(float size, ImVec2 pos, ImU32 col, const ImVec4& clip_rect, const char* text_begin, const char* text_end, ImDrawVert*& out_vertices, float wrap_width = 0.0f) const;
IMGUI_API const char* CalcWordWrapPositionA(float scale, const char* text, const char* text_end, float wrap_width) const;
#pragma pack(push, 1)
struct FntInfo
{
signed short FontSize;
unsigned char BitField; // bit 0: smooth, bit 1: unicode, bit 2: italic, bit 3: bold, bit 4: fixedHeight, bits 5-7: reserved
unsigned char CharSet;
unsigned short StretchH;
unsigned char AA;
unsigned char PaddingUp, PaddingRight, PaddingDown, PaddingLeft;
unsigned char SpacingHoriz, SpacingVert, Outline;
//char FontName[];
};
struct FntCommon
{
unsigned short LineHeight, Base;
unsigned short ScaleW, ScaleH;
unsigned short Pages;
unsigned char BitField;
unsigned char Channels[4];
};
struct FntGlyph
{
unsigned int Id;
unsigned short X, Y, Width, Height;
signed short XOffset, YOffset;
signed short XAdvance;
unsigned char Page;
unsigned char Channel;
};
struct FntKerning
{
unsigned int IdFirst;
unsigned int IdSecond;
signed short Amount;
};
#pragma pack(pop)
IMGUI_API ImVec2 CalcTextSizeA(float size, float max_width, float wrap_width, const char* text_begin, const char* text_end = NULL, const char** remaining = NULL) const; // utf8
IMGUI_API ImVec2 CalcTextSizeW(float size, float max_width, const ImWchar* text_begin, const ImWchar* text_end, const ImWchar** remaining = NULL) const; // wchar
IMGUI_API void RenderText(float size, ImVec2 pos, ImU32 col, const ImVec4& clip_rect, const char* text_begin, const char* text_end, ImDrawVert*& out_vertices, float wrap_width = 0.0f) const;
IMGUI_API const char* CalcWordWrapPositionA(float scale, const char* text, const char* text_end, float wrap_width) const;
};
//---- Include imgui_user.h at the end of imgui.h

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// stb_rect_pack.h - v0.05 - public domain - rectangle packing
// Sean Barrett 2014
//
// Useful for e.g. packing rectangular textures into an atlas.
// Does not do rotation.
//
// Not necessarily the awesomest packing method, but better than
// the totally naive one in stb_truetype (which is primarily what
// this is meant to replace).
//
// Has only had a few tests run, may have issues.
//
// More docs to come.
//
// No memory allocations; uses qsort() and assert() from stdlib.
//
// This library currently uses the Skyline Bottom-Left algorithm.
//
// Please note: better rectangle packers are welcome! Please
// implement them to the same API, but with a different init
// function.
//
// Version history:
//
// 0.05: added STBRP_ASSERT to allow replacing assert
// 0.04: fixed minor bug in STBRP_LARGE_RECTS support
// 0.01: initial release
//////////////////////////////////////////////////////////////////////////////
//
// INCLUDE SECTION
//
#ifndef STB_INCLUDE_STB_RECT_PACK_H
#define STB_INCLUDE_STB_RECT_PACK_H
#define STB_RECT_PACK_VERSION 1
#ifdef STBRP_STATIC
#define STBRP_DEF static
#else
#define STBRP_DEF extern
#endif
#ifdef __cplusplus
extern "C" {
#endif
typedef struct stbrp_context stbrp_context;
typedef struct stbrp_node stbrp_node;
typedef struct stbrp_rect stbrp_rect;
#ifdef STBRP_LARGE_RECTS
typedef int stbrp_coord;
#else
typedef unsigned short stbrp_coord;
#endif
STBRP_DEF void stbrp_pack_rects (stbrp_context *context, stbrp_rect *rects, int num_rects);
// Assign packed locations to rectangles. The rectangles are of type
// 'stbrp_rect' defined below, stored in the array 'rects', and there
// are 'num_rects' many of them.
//
// Rectangles which are successfully packed have the 'was_packed' flag
// set to a non-zero value and 'x' and 'y' store the minimum location
// on each axis (i.e. bottom-left in cartesian coordinates, top-left
// if you imagine y increasing downwards). Rectangles which do not fit
// have the 'was_packed' flag set to 0.
//
// You should not try to access the 'rects' array from another thread
// while this function is running, as the function temporarily reorders
// the array while it executes.
//
// To pack into another rectangle, you need to call stbrp_init_target
// again. To continue packing into the same rectangle, you can call
// this function again. Calling this multiple times with multiple rect
// arrays will probably produce worse packing results than calling it
// a single time with the full rectangle array, but the option is
// available.
struct stbrp_rect
{
// reserved for your use:
int id;
// input:
stbrp_coord w, h;
// output:
stbrp_coord x, y;
int was_packed; // non-zero if valid packing
}; // 16 bytes, nominally
STBRP_DEF void stbrp_init_target (stbrp_context *context, int width, int height, stbrp_node *nodes, int num_nodes);
// Initialize a rectangle packer to:
// pack a rectangle that is 'width' by 'height' in dimensions
// using temporary storage provided by the array 'nodes', which is 'num_nodes' long
//
// You must call this function every time you start packing into a new target.
//
// There is no "shutdown" function. The 'nodes' memory must stay valid for
// the following stbrp_pack_rects() call (or calls), but can be freed after
// the call (or calls) finish.
//
// Note: to guarantee best results, either:
// 1. make sure 'num_nodes' >= 'width'
// or 2. call stbrp_allow_out_of_mem() defined below with 'allow_out_of_mem = 1'
//
// If you don't do either of the above things, widths will be quantized to multiples
// of small integers to guarantee the algorithm doesn't run out of temporary storage.
//
// If you do #2, then the non-quantized algorithm will be used, but the algorithm
// may run out of temporary storage and be unable to pack some rectangles.
STBRP_DEF void stbrp_setup_allow_out_of_mem (stbrp_context *context, int allow_out_of_mem);
// Optionally call this function after init but before doing any packing to
// change the handling of the out-of-temp-memory scenario, described above.
// If you call init again, this will be reset to the default (false).
STBRP_DEF void stbrp_setup_heuristic (stbrp_context *context, int heuristic);
// Optionally select which packing heuristic the library should use. Different
// heuristics will produce better/worse results for different data sets.
// If you call init again, this will be reset to the default.
enum
{
STBRP_HEURISTIC_Skyline_default=0,
STBRP_HEURISTIC_Skyline_BL_sortHeight = STBRP_HEURISTIC_Skyline_default,
STBRP_HEURISTIC_Skyline_BF_sortHeight,
};
//////////////////////////////////////////////////////////////////////////////
//
// the details of the following structures don't matter to you, but they must
// be visible so you can handle the memory allocations for them
struct stbrp_node
{
stbrp_coord x,y;
stbrp_node *next;
};
struct stbrp_context
{
int width;
int height;
int align;
int init_mode;
int heuristic;
int num_nodes;
stbrp_node *active_head;
stbrp_node *free_head;
stbrp_node extra[2]; // we allocate two extra nodes so optimal user-node-count is 'width' not 'width+2'
};
#ifdef __cplusplus
}
#endif
#endif
//////////////////////////////////////////////////////////////////////////////
//
// IMPLEMENTATION SECTION
//
#ifdef STB_RECT_PACK_IMPLEMENTATION
#include <stdlib.h>
#ifndef STBRP_ASSERT
#include <assert.h>
#define STBRP_ASSERT assert
#endif
enum
{
STBRP__INIT_skyline = 1,
};
STBRP_DEF void stbrp_setup_heuristic(stbrp_context *context, int heuristic)
{
switch (context->init_mode) {
case STBRP__INIT_skyline:
STBRP_ASSERT(heuristic == STBRP_HEURISTIC_Skyline_BL_sortHeight || heuristic == STBRP_HEURISTIC_Skyline_BF_sortHeight);
context->heuristic = heuristic;
break;
default:
STBRP_ASSERT(0);
}
}
STBRP_DEF void stbrp_setup_allow_out_of_mem(stbrp_context *context, int allow_out_of_mem)
{
if (allow_out_of_mem)
// if it's ok to run out of memory, then don't bother aligning them;
// this gives better packing, but may fail due to OOM (even though
// the rectangles easily fit). @TODO a smarter approach would be to only
// quantize once we've hit OOM, then we could get rid of this parameter.
context->align = 1;
else {
// if it's not ok to run out of memory, then quantize the widths
// so that num_nodes is always enough nodes.
//
// I.e. num_nodes * align >= width
// align >= width / num_nodes
// align = ceil(width/num_nodes)
context->align = (context->width + context->num_nodes-1) / context->num_nodes;
}
}
STBRP_DEF void stbrp_init_target(stbrp_context *context, int width, int height, stbrp_node *nodes, int num_nodes)
{
int i;
#ifndef STBRP_LARGE_RECTS
STBRP_ASSERT(width <= 0xffff && height <= 0xffff);
#endif
for (i=0; i < num_nodes-1; ++i)
nodes[i].next = &nodes[i+1];
nodes[i].next = NULL;
context->init_mode = STBRP__INIT_skyline;
context->heuristic = STBRP_HEURISTIC_Skyline_default;
context->free_head = &nodes[0];
context->active_head = &context->extra[0];
context->width = width;
context->height = height;
context->num_nodes = num_nodes;
stbrp_setup_allow_out_of_mem(context, 0);
// node 0 is the full width, node 1 is the sentinel (lets us not store width explicitly)
context->extra[0].x = 0;
context->extra[0].y = 0;
context->extra[0].next = &context->extra[1];
context->extra[1].x = (stbrp_coord) width;
#ifdef STBRP_LARGE_RECTS
context->extra[1].y = (1<<30);
#else
context->extra[1].y = 65535;
#endif
context->extra[1].next = NULL;
}
// find minimum y position if it starts at x1
static int stbrp__skyline_find_min_y(stbrp_context *c, stbrp_node *first, int x0, int width, int *pwaste)
{
stbrp_node *node = first;
int x1 = x0 + width;
int min_y, visited_width, waste_area;
STBRP_ASSERT(first->x <= x0);
#if 0
// skip in case we're past the node
while (node->next->x <= x0)
++node;
#else
STBRP_ASSERT(node->next->x > x0); // we ended up handling this in the caller for efficiency
#endif
STBRP_ASSERT(node->x <= x0);
min_y = 0;
waste_area = 0;
visited_width = 0;
while (node->x < x1) {
if (node->y > min_y) {
// raise min_y higher.
// we've accounted for all waste up to min_y,
// but we'll now add more waste for everything we've visted
waste_area += visited_width * (node->y - min_y);
min_y = node->y;
// the first time through, visited_width might be reduced
if (node->x < x0)
visited_width += node->next->x - x0;
else
visited_width += node->next->x - node->x;
} else {
// add waste area
int under_width = node->next->x - node->x;
if (under_width + visited_width > width)
under_width = width - visited_width;
waste_area += under_width * (min_y - node->y);
visited_width += under_width;
}
node = node->next;
}
*pwaste = waste_area;
return min_y;
}
typedef struct
{
int x,y;
stbrp_node **prev_link;
} stbrp__findresult;
static stbrp__findresult stbrp__skyline_find_best_pos(stbrp_context *c, int width, int height)
{
int best_waste = (1<<30), best_x, best_y = (1 << 30);
stbrp__findresult fr;
stbrp_node **prev, *node, *tail, **best = NULL;
// align to multiple of c->align
width = (width + c->align - 1);
width -= width % c->align;
STBRP_ASSERT(width % c->align == 0);
node = c->active_head;
prev = &c->active_head;
while (node->x + width <= c->width) {
int y,waste;
y = stbrp__skyline_find_min_y(c, node, node->x, width, &waste);
if (c->heuristic == STBRP_HEURISTIC_Skyline_BL_sortHeight) { // actually just want to test BL
// bottom left
if (y < best_y) {
best_y = y;
best = prev;
}
} else {
// best-fit
if (y + height <= c->height) {
// can only use it if it first vertically
if (y < best_y || (y == best_y && waste < best_waste)) {
best_y = y;
best_waste = waste;
best = prev;
}
}
}
prev = &node->next;
node = node->next;
}
best_x = (best == NULL) ? 0 : (*best)->x;
// if doing best-fit (BF), we also have to try aligning right edge to each node position
//
// e.g, if fitting
//
// ____________________
// |____________________|
//
// into
//
// | |
// | ____________|
// |____________|
//
// then right-aligned reduces waste, but bottom-left BL is always chooses left-aligned
//
// This makes BF take about 2x the time
if (c->heuristic == STBRP_HEURISTIC_Skyline_BF_sortHeight) {
tail = c->active_head;
node = c->active_head;
prev = &c->active_head;
// find first node that's admissible
while (tail->x < width)
tail = tail->next;
while (tail) {
int xpos = tail->x - width;
int y,waste;
STBRP_ASSERT(xpos >= 0);
// find the left position that matches this
while (node->next->x <= xpos) {
prev = &node->next;
node = node->next;
}
STBRP_ASSERT(node->next->x > xpos && node->x <= xpos);
y = stbrp__skyline_find_min_y(c, node, xpos, width, &waste);
if (y + height < c->height) {
if (y <= best_y) {
if (y < best_y || waste < best_waste || (waste==best_waste && xpos < best_x)) {
best_x = xpos;
STBRP_ASSERT(y <= best_y);
best_y = y;
best_waste = waste;
best = prev;
}
}
}
tail = tail->next;
}
}
fr.prev_link = best;
fr.x = best_x;
fr.y = best_y;
return fr;
}
static stbrp__findresult stbrp__skyline_pack_rectangle(stbrp_context *context, int width, int height)
{
// find best position according to heuristic
stbrp__findresult res = stbrp__skyline_find_best_pos(context, width, height);
stbrp_node *node, *cur;
// bail if:
// 1. it failed
// 2. the best node doesn't fit (we don't always check this)
// 3. we're out of memory
if (res.prev_link == NULL || res.y + height > context->height || context->free_head == NULL) {
res.prev_link = NULL;
return res;
}
// on success, create new node
node = context->free_head;
node->x = (stbrp_coord) res.x;
node->y = (stbrp_coord) (res.y + height);
context->free_head = node->next;
// insert the new node into the right starting point, and
// let 'cur' point to the remaining nodes needing to be
// stiched back in
cur = *res.prev_link;
if (cur->x < res.x) {
// preserve the existing one, so start testing with the next one
stbrp_node *next = cur->next;
cur->next = node;
cur = next;
} else {
*res.prev_link = node;
}
// from here, traverse cur and free the nodes, until we get to one
// that shouldn't be freed
while (cur->next && cur->next->x <= res.x + width) {
stbrp_node *next = cur->next;
// move the current node to the free list
cur->next = context->free_head;
context->free_head = cur;
cur = next;
}
// stitch the list back in
node->next = cur;
if (cur->x < res.x + width)
cur->x = (stbrp_coord) (res.x + width);
#ifdef _DEBUG
cur = context->active_head;
while (cur->x < context->width) {
STBRP_ASSERT(cur->x < cur->next->x);
cur = cur->next;
}
STBRP_ASSERT(cur->next == NULL);
{
stbrp_node *L1 = NULL, *L2 = NULL;
int count=0;
cur = context->active_head;
while (cur) {
L1 = cur;
cur = cur->next;
++count;
}
cur = context->free_head;
while (cur) {
L2 = cur;
cur = cur->next;
++count;
}
STBRP_ASSERT(count == context->num_nodes+2);
}
#endif
return res;
}
static int rect_height_compare(const void *a, const void *b)
{
stbrp_rect *p = (stbrp_rect *) a;
stbrp_rect *q = (stbrp_rect *) b;
if (p->h > q->h)
return -1;
if (p->h < q->h)
return 1;
return (p->w > q->w) ? -1 : (p->w < q->w);
}
static int rect_width_compare(const void *a, const void *b)
{
stbrp_rect *p = (stbrp_rect *) a;
stbrp_rect *q = (stbrp_rect *) b;
if (p->w > q->w)
return -1;
if (p->w < q->w)
return 1;
return (p->h > q->h) ? -1 : (p->h < q->h);
}
static int rect_original_order(const void *a, const void *b)
{
stbrp_rect *p = (stbrp_rect *) a;
stbrp_rect *q = (stbrp_rect *) b;
return (p->was_packed < q->was_packed) ? -1 : (p->was_packed > q->was_packed);
}
#ifdef STBRP_LARGE_RECTS
#define STBRP__MAXVAL 0xffffffff
#else
#define STBRP__MAXVAL 0xffff
#endif
STBRP_DEF void stbrp_pack_rects(stbrp_context *context, stbrp_rect *rects, int num_rects)
{
int i;
// we use the 'was_packed' field internally to allow sorting/unsorting
for (i=0; i < num_rects; ++i) {
rects[i].was_packed = i;
#ifndef STBRP_LARGE_RECTS
STBRP_ASSERT(rects[i].w <= 0xffff && rects[i].h <= 0xffff);
#endif
}
// sort according to heuristic
qsort(rects, num_rects, sizeof(rects[0]), rect_height_compare);
for (i=0; i < num_rects; ++i) {
stbrp__findresult fr = stbrp__skyline_pack_rectangle(context, rects[i].w, rects[i].h);
if (fr.prev_link) {
rects[i].x = (stbrp_coord) fr.x;
rects[i].y = (stbrp_coord) fr.y;
} else {
rects[i].x = rects[i].y = STBRP__MAXVAL;
}
}
// unsort
qsort(rects, num_rects, sizeof(rects[0]), rect_original_order);
// set was_packed flags
for (i=0; i < num_rects; ++i)
rects[i].was_packed = !(rects[i].x == STBRP__MAXVAL && rects[i].y == STBRP__MAXVAL);
}
#endif

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