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Fonts: add ImFontGlyph::SourceIdx. Extract code out of DebugNodeFont() into DebugNodeFontGlyphesForSrcMask().

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(src_mask unused in this commit)
This commit is contained in:
ocornut
2025-04-21 18:06:50 +02:00
parent bcd1a94b89
commit c4fa9bb61f
4 changed files with 62 additions and 48 deletions
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100
imgui.cpp
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@@ -16700,52 +16700,7 @@ void ImGui::DebugNodeFont(ImFont* font)
src_n, src->Name, src->OversampleH, oversample_h, src->OversampleV, oversample_v, src->PixelSnapH, src->GlyphOffset.x, src->GlyphOffset.y);
}
ImDrawList* draw_list = GetWindowDrawList();
const ImU32 glyph_col = GetColorU32(ImGuiCol_Text);
const float cell_size = baked->Size * 1;
const float cell_spacing = GetStyle().ItemSpacing.y;
for (unsigned int base = 0; base <= IM_UNICODE_CODEPOINT_MAX; base += 256)
{
// Skip ahead if a large bunch of glyphs are not present in the font (test in chunks of 4k)
// This is only a small optimization to reduce the number of iterations when IM_UNICODE_MAX_CODEPOINT
// is large // (if ImWchar==ImWchar32 we will do at least about 272 queries here)
if (!(base & 8191) && font->IsGlyphRangeUnused(base, base + 8191))
{
base += 8192 - 256;
continue;
}
int count = 0;
for (unsigned int n = 0; n < 256; n++)
if (baked->IsGlyphLoaded((ImWchar)(base + n)))
count++;
if (count <= 0)
continue;
if (!TreeNode((void*)(intptr_t)base, "U+%04X..U+%04X (%d %s)", base, base + 255, count, count > 1 ? "glyphs" : "glyph"))
continue;
// Draw a 16x16 grid of glyphs
ImVec2 base_pos = GetCursorScreenPos();
for (unsigned int n = 0; n < 256; n++)
{
// We use ImFont::RenderChar as a shortcut because we don't have UTF-8 conversion functions
// available here and thus cannot easily generate a zero-terminated UTF-8 encoded string.
ImVec2 cell_p1(base_pos.x + (n % 16) * (cell_size + cell_spacing), base_pos.y + (n / 16) * (cell_size + cell_spacing));
ImVec2 cell_p2(cell_p1.x + cell_size, cell_p1.y + cell_size);
const ImFontGlyph* glyph = baked->IsGlyphLoaded((ImWchar)(base + n)) ? baked->FindGlyph((ImWchar)(base + n)) : NULL;
draw_list->AddRect(cell_p1, cell_p2, glyph ? IM_COL32(255, 255, 255, 100) : IM_COL32(255, 255, 255, 50));
if (!glyph)
continue;
font->RenderChar(draw_list, cell_size, cell_p1, glyph_col, (ImWchar)(base + n));
if (IsMouseHoveringRect(cell_p1, cell_p2) && BeginTooltip())
{
DebugNodeFontGlyph(font, glyph);
EndTooltip();
}
}
Dummy(ImVec2((cell_size + cell_spacing) * 16, (cell_size + cell_spacing) * 16));
TreePop();
}
DebugNodeFontGlyphesForSrcMask(font, baked, ~0);
TreePop();
}
PopID();
@@ -16754,6 +16709,57 @@ void ImGui::DebugNodeFont(ImFont* font)
Unindent();
}
void ImGui::DebugNodeFontGlyphesForSrcMask(ImFont* font, ImFontBaked* baked, int src_mask)
{
ImDrawList* draw_list = GetWindowDrawList();
const ImU32 glyph_col = GetColorU32(ImGuiCol_Text);
const float cell_size = baked->Size * 1;
const float cell_spacing = GetStyle().ItemSpacing.y;
for (unsigned int base = 0; base <= IM_UNICODE_CODEPOINT_MAX; base += 256)
{
// Skip ahead if a large bunch of glyphs are not present in the font (test in chunks of 4k)
// This is only a small optimization to reduce the number of iterations when IM_UNICODE_MAX_CODEPOINT
// is large // (if ImWchar==ImWchar32 we will do at least about 272 queries here)
if (!(base & 8191) && font->IsGlyphRangeUnused(base, base + 8191))
{
base += 8192 - 256;
continue;
}
int count = 0;
for (unsigned int n = 0; n < 256; n++)
if (const ImFontGlyph* glyph = baked->IsGlyphLoaded((ImWchar)(base + n)) ? baked->FindGlyph((ImWchar)(base + n)) : NULL)
if (src_mask & (1 << glyph->SourceIdx))
count++;
if (count <= 0)
continue;
if (!TreeNode((void*)(intptr_t)base, "U+%04X..U+%04X (%d %s)", base, base + 255, count, count > 1 ? "glyphs" : "glyph"))
continue;
// Draw a 16x16 grid of glyphs
ImVec2 base_pos = GetCursorScreenPos();
for (unsigned int n = 0; n < 256; n++)
{
// We use ImFont::RenderChar as a shortcut because we don't have UTF-8 conversion functions
// available here and thus cannot easily generate a zero-terminated UTF-8 encoded string.
ImVec2 cell_p1(base_pos.x + (n % 16) * (cell_size + cell_spacing), base_pos.y + (n / 16) * (cell_size + cell_spacing));
ImVec2 cell_p2(cell_p1.x + cell_size, cell_p1.y + cell_size);
const ImFontGlyph* glyph = baked->IsGlyphLoaded((ImWchar)(base + n)) ? baked->FindGlyph((ImWchar)(base + n)) : NULL;
draw_list->AddRect(cell_p1, cell_p2, glyph ? IM_COL32(255, 255, 255, 100) : IM_COL32(255, 255, 255, 50));
if (!glyph || (src_mask & (1 << glyph->SourceIdx)) == 0)
continue;
font->RenderChar(draw_list, cell_size, cell_p1, glyph_col, (ImWchar)(base + n));
if (IsMouseHoveringRect(cell_p1, cell_p2) && BeginTooltip())
{
DebugNodeFontGlyph(font, glyph);
EndTooltip();
}
}
Dummy(ImVec2((cell_size + cell_spacing) * 16, (cell_size + cell_spacing) * 16));
TreePop();
}
}
void ImGui::DebugNodeFontGlyph(ImFont* font, const ImFontGlyph* glyph)
{
Text("Codepoint: U+%04X", glyph->Codepoint);
@@ -16767,6 +16773,7 @@ void ImGui::DebugNodeFontGlyph(ImFont* font, const ImFontGlyph* glyph)
ImTextureRect* r = ImFontAtlasPackGetRect(font->ContainerAtlas, glyph->PackId);
Text("PackId: %d (%dx%d rect at %d,%d)", glyph->PackId, r->w, r->h, r->x, r->y);
}
Text("SourceIdx: %d", glyph->SourceIdx);
}
// [DEBUG] Display contents of ImGuiStorage
@@ -17429,6 +17436,7 @@ void ImGui::DebugNodeColumns(ImGuiOldColumns*) {}
void ImGui::DebugNodeDrawList(ImGuiWindow*, ImGuiViewportP*, const ImDrawList*, const char*) {}
void ImGui::DebugNodeDrawCmdShowMeshAndBoundingBox(ImDrawList*, const ImDrawList*, const ImDrawCmd*, bool, bool) {}
void ImGui::DebugNodeFont(ImFont*) {}
void ImGui::DebugNodeFontGlyphesForSrcMask(ImFont*, ImFontBaked*, int) {}
void ImGui::DebugNodeStorage(ImGuiStorage*, const char*) {}
void ImGui::DebugNodeTabBar(ImGuiTabBar*, const char*) {}
void ImGui::DebugNodeWindow(ImGuiWindow*, const char*) {}

3
imgui.h
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@@ -3484,7 +3484,8 @@ struct ImFontGlyph
{
unsigned int Colored : 1; // Flag to indicate glyph is colored and should generally ignore tinting (make it usable with no shift on little-endian as this is used in loops)
unsigned int Visible : 1; // Flag to indicate glyph has no visible pixels (e.g. space). Allow early out when rendering.
unsigned int Codepoint : 30; // 0x0000..0x10FFFF
unsigned int SourceIdx : 4; // Index of source in parent font
unsigned int Codepoint : 26; // 0x0000..0x10FFFF
float AdvanceX; // Horizontal distance to advance cursor/layout position.
float X0, Y0, X1, Y1; // Glyph corners. Offsets from current cursor/layout position.
float U0, V0, U1, V1; // Texture coordinates for the current value of ImFontAtlas->TexRef. Cached equivalent of calling GetCustomRect() with PackId.

6
imgui_draw.cpp
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@@ -4390,7 +4390,11 @@ static ImFontGlyph* ImFontBaked_BuildLoadGlyph(ImFontBaked* baked, ImWchar codep
const ImFontLoader* loader = src->FontLoader ? src->FontLoader : atlas->FontLoader;
if (!src->GlyphExcludeRanges || ImFontAtlasBuildAcceptCodepointForSource(src, codepoint))
if (ImFontGlyph* glyph = loader->FontBakedLoadGlyph(atlas, src, baked, loader_user_data_p, codepoint))
return glyph; // FIXME: Add hooks for e.g. #7962
{
// FIXME: Add hooks for e.g. #7962
glyph->SourceIdx = src_n;
return glyph;
}
loader_user_data_p += loader->FontBakedSrcLoaderDataSize;
}

1
imgui_internal.h
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@@ -3625,6 +3625,7 @@ namespace ImGui
IMGUI_API void DebugNodeDrawList(ImGuiWindow* window, ImGuiViewportP* viewport, const ImDrawList* draw_list, const char* label);
IMGUI_API void DebugNodeDrawCmdShowMeshAndBoundingBox(ImDrawList* out_draw_list, const ImDrawList* draw_list, const ImDrawCmd* draw_cmd, bool show_mesh, bool show_aabb);
IMGUI_API void DebugNodeFont(ImFont* font);
IMGUI_API void DebugNodeFontGlyphesForSrcMask(ImFont* font, ImFontBaked* baked, int src_mask);
IMGUI_API void DebugNodeFontGlyph(ImFont* font, const ImFontGlyph* glyph);
IMGUI_API void DebugNodeTexture(ImTextureData* tex, int int_id, const ImFontAtlasRect* highlight_rect = NULL); // ID used to facilitate persisting the "current" texture.
IMGUI_API void DebugNodeStorage(ImGuiStorage* storage, const char* label);