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ImFontAtlas allows loading multiple fonts into same texture. Revamped new init API for 1.30

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This commit is contained in:
ocornut
2015-01-17 22:15:29 +00:00
parent cb9a3235be
commit 2c31599bcc
6 changed files with 488 additions and 335 deletions
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20
examples/opengl_example/main.cpp
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@ -145,20 +145,25 @@ void InitGL()
glewInit();
}
void LoadFontTexture(ImFont* font)
void LoadFontTexture()
{
ImGuiIO& io = ImGui::GetIO();
//ImFont* my_font = io.FontAtlas->AddFontDefault();
//ImFont* my_font2 = io.FontAtlas->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 20.0f, ImFontAtlas::GetGlyphRangesJapanese());
unsigned char* pixels;
int width, height;
font->GetTextureDataAlpha8(&pixels, &width, &height);
io.FontAtlas->GetTexDataAsAlpha8(&pixels, &width, &height);
GLuint tex_id;
glGenTextures(1, &tex_id);
glBindTexture(GL_TEXTURE_2D, tex_id);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, width, height, 0, GL_ALPHA, GL_UNSIGNED_BYTE, pixels);
font->TexID = (void *)(intptr_t)tex_id;
// Store our identifier
io.FontAtlas->TexID = (void *)(intptr_t)tex_id;
}
void InitImGui()
@ -186,11 +191,6 @@ void InitImGui()
io.RenderDrawListsFn = ImImpl_RenderDrawLists;
io.SetClipboardTextFn = ImImpl_SetClipboardTextFn;
io.GetClipboardTextFn = ImImpl_GetClipboardTextFn;
// Load font (optionally load a custom TTF font)
//io.Font->LoadFromFileTTF("myfont.ttf", font_size_px, ImFont::GetGlyphRangesDefault());
//io.Font->DisplayOffset.y += 1.0f;
LoadFontTexture(io.Font);
}
void UpdateImGui()