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Fonts: Ensure calling AddFontXXX function doesn't invalidates ImFont's ConfigData pointers prior to building again. (#6825)

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This commit is contained in:
ocornut 2023-09-16 13:40:35 +02:00
parent b101cf46b6
commit 6addf28c4b
3 changed files with 21 additions and 3 deletions
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2
docs/CHANGELOG.txt
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@ -82,6 +82,8 @@ Other changes:
This is because our layout/font system currently doesn't fully support non-integer sizes. Until
it does, this has been a common pitfall leading to more or less subtle issues. (#3164, #3309, #6800)
- Fonts: Better assert during load when passing truncated font data or wrong data size. (#6822)
- Fonts: Ensure calling AddFontXXX function doesn't invalidates ImFont's ConfigData pointers
prior to building again. (#6825)
- InputTextMultiline: Fixed a crash pressing Down on last empty line of a multiline buffer.
(regression from 1.89.2, only happened in some states). (#6783, #6000)
- InputTextMultiline: Fixed Tabbing cycle leading to a situation where Enter key wouldn't

21
imgui_draw.cpp
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@ -2183,6 +2183,8 @@ ImFont* ImFontAtlas::AddFont(const ImFontConfig* font_cfg)
if (new_font_cfg.DstFont->EllipsisChar == (ImWchar)-1)
new_font_cfg.DstFont->EllipsisChar = font_cfg->EllipsisChar;
ImFontAtlasUpdateConfigDataPointers(this);
// Invalidate texture
TexReady = false;
ClearTexData();
@ -2695,19 +2697,31 @@ const ImFontBuilderIO* ImFontAtlasGetBuilderForStbTruetype()
#endif // IMGUI_ENABLE_STB_TRUETYPE
void ImFontAtlasUpdateConfigDataPointers(ImFontAtlas* atlas)
{
for (ImFontConfig& font_cfg : atlas->ConfigData)
{
ImFont* font = font_cfg.DstFont;
if (!font_cfg.MergeMode)
{
font->ConfigData = &font_cfg;
font->ConfigDataCount = 0;
}
font->ConfigDataCount++;
}
}
void ImFontAtlasBuildSetupFont(ImFontAtlas* atlas, ImFont* font, ImFontConfig* font_config, float ascent, float descent)
{
if (!font_config->MergeMode)
{
font->ClearOutputData();
font->FontSize = font_config->SizePixels;
font->ConfigData = font_config;
font->ConfigDataCount = 0;
IM_ASSERT(font->ConfigData == font_config);
font->ContainerAtlas = atlas;
font->Ascent = ascent;
font->Descent = descent;
}
font->ConfigDataCount++;
}
void ImFontAtlasBuildPackCustomRects(ImFontAtlas* atlas, void* stbrp_context_opaque)
@ -3269,6 +3283,7 @@ void ImFont::BuildLookupTable()
max_codepoint = ImMax(max_codepoint, (int)Glyphs[i].Codepoint);
// Build lookup table
IM_ASSERT(Glyphs.Size > 0 && "Font has not loaded glyph!");
IM_ASSERT(Glyphs.Size < 0xFFFF); // -1 is reserved
IndexAdvanceX.clear();
IndexLookup.clear();

1
imgui_internal.h
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@ -3385,6 +3385,7 @@ struct ImFontBuilderIO
#ifdef IMGUI_ENABLE_STB_TRUETYPE
IMGUI_API const ImFontBuilderIO* ImFontAtlasGetBuilderForStbTruetype();
#endif
IMGUI_API void ImFontAtlasUpdateConfigDataPointers(ImFontAtlas* atlas);
IMGUI_API void ImFontAtlasBuildInit(ImFontAtlas* atlas);
IMGUI_API void ImFontAtlasBuildSetupFont(ImFontAtlas* atlas, ImFont* font, ImFontConfig* font_config, float ascent, float descent);
IMGUI_API void ImFontAtlasBuildPackCustomRects(ImFontAtlas* atlas, void* stbrp_context_opaque);