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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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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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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>