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Fonts: Baked system, v12: support GlyphOffset / GlyphMinAdvanceX / GlyphMaxAdvanceX by scaling from ref value.

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Overwriting cfg->PixelSnapH = true; in imgui_freetype is weird.
This commit is contained in:
ocornut 2025-02-03 17:46:59 +01:00
parent df694c89b0
commit 99f6b305c1
4 changed files with 27 additions and 10 deletions
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12
misc/freetype/imgui_freetype.cpp
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@ -204,6 +204,9 @@ namespace
if (UserFlags & ImGuiFreeTypeBuilderFlags_NoHinting)
LoadFlags |= FT_LOAD_NO_HINTING;
else
src->PixelSnapH = true; // FIXME: A bit weird to do this this way.
if (UserFlags & ImGuiFreeTypeBuilderFlags_NoAutoHint)
LoadFlags |= FT_LOAD_NO_AUTOHINT;
if (UserFlags & ImGuiFreeTypeBuilderFlags_ForceAutoHint)
@ -559,8 +562,13 @@ bool ImGui_ImplFreeType_FontBakedAddGlyph(ImFontAtlas* atlas, ImFontBaked* baked
uint32_t* temp_buffer = (uint32_t*)atlas->Builder->TempBuffer.Data;
bd_font_data->BlitGlyph(ft_bitmap, temp_buffer, w);
float font_off_x = src->GlyphOffset.x;
float font_off_y = src->GlyphOffset.y + IM_ROUND(baked->Ascent);
const float offsets_scale = baked->Size / baked->ContainerFont->Sources[0].SizePixels;
float font_off_x = (src->GlyphOffset.x * offsets_scale);
float font_off_y = (src->GlyphOffset.y * offsets_scale) + baked->Ascent;
if (src->PixelSnapH) // Snap scaled offset. This is to mitigate backward compatibility issues for GlyphOffset, but a better design would be welcome.
font_off_x = IM_ROUND(font_off_x);
if (src->PixelSnapV)
font_off_y = IM_ROUND(font_off_y);
float recip_h = 1.0f / src->RasterizerDensity;
float recip_v = 1.0f / src->RasterizerDensity;