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Fonts: minor/shallow amends (#6925)
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@ -201,6 +201,12 @@ Other changes:
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- Better assert during load when passing truncated font data or wrong data size. (#6822)
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- Ensure calling AddFontXXX function doesn't invalidates ImFont's ConfigData pointers
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prior to building again. (#6825)
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- Added ImFontConfig::RasterizerDensity field to increase texture size of rendered glyphs
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without altering other metrics. Among other things, this makes it easier to have zooming code
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swapping between 2 fonts (e.g. a 100% and a 400% fonts) depending on current scale. (#6925) [@thedmd]
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Important: if you increase this it is expected that you would render the font with a scale of
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similar value or magnitude. Merely increasing this without increasing scale may lower quality.
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- imgui_freetype: Added support for RasterizerDensity. (#6925) [@thedmd]
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- imgui_freetype: Fixed a warning and leak in IMGUI_ENABLE_FREETYPE_LUNASVG support. (#6842, #6591)
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- Inputs: Added IsKeyChordPressed() helper function e.g. IsKeyChordPressed(ImGuiMod_Ctrl | ImGuiKey_S).
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(note that ImGuiMod_Shortcut may be used as an alias for Cmd on OSX and Ctrl on other systems).
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4
imgui.h
4
imgui.h
@ -2848,8 +2848,8 @@ struct ImFontConfig
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float GlyphMaxAdvanceX; // FLT_MAX // Maximum AdvanceX for glyphs
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bool MergeMode; // false // Merge into previous ImFont, so you can combine multiple inputs font into one ImFont (e.g. ASCII font + icons + Japanese glyphs). You may want to use GlyphOffset.y when merge font of different heights.
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unsigned int FontBuilderFlags; // 0 // Settings for custom font builder. THIS IS BUILDER IMPLEMENTATION DEPENDENT. Leave as zero if unsure.
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float RasterizerMultiply; // 1.0f // Brighten (>1.0f) or darken (<1.0f) font output. Brightening small fonts may be a good workaround to make them more readable.
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float RasterizerDensity; // 1.0f // DPI scale for rasterization. Bigger DPI for higher quality.
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float RasterizerMultiply; // 1.0f // Linearly brighten (>1.0f) or darken (<1.0f) font output. Brightening small fonts may be a good workaround to make them more readable. This is a silly thing we may remove in the future.
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float RasterizerDensity; // 1.0f // DPI scale for rasterization, not altering other font metrics: make it easy to swap between e.g. a 100% and a 400% fonts for a zooming display. IMPORTANT: If you increase this it is expected that you increase font scale accordingly, otherwise quality may look lowered.
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ImWchar EllipsisChar; // -1 // Explicitly specify unicode codepoint of ellipsis character. When fonts are being merged first specified ellipsis will be used.
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// [Internal]
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@ -2576,7 +2576,7 @@ static bool ImFontAtlasBuildWithStbTruetype(ImFontAtlas* atlas)
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src_tmp.PackRange.v_oversample = (unsigned char)cfg.OversampleV;
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// Gather the sizes of all rectangles we will need to pack (this loop is based on stbtt_PackFontRangesGatherRects)
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const float scale = (cfg.SizePixels > 0) ? stbtt_ScaleForPixelHeight(&src_tmp.FontInfo, cfg.SizePixels * cfg.RasterizerDensity) : stbtt_ScaleForMappingEmToPixels(&src_tmp.FontInfo, -cfg.SizePixels * cfg.RasterizerDensity);
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const float scale = (cfg.SizePixels > 0.0f) ? stbtt_ScaleForPixelHeight(&src_tmp.FontInfo, cfg.SizePixels * cfg.RasterizerDensity) : stbtt_ScaleForMappingEmToPixels(&src_tmp.FontInfo, -cfg.SizePixels * cfg.RasterizerDensity);
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const int padding = atlas->TexGlyphPadding;
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for (int glyph_i = 0; glyph_i < src_tmp.GlyphsList.Size; glyph_i++)
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{
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@ -6,6 +6,7 @@
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// CHANGELOG
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// (minor and older changes stripped away, please see git history for details)
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// 2023/11/13: added support for ImFontConfig::RasterizationDensity field for scaling render density without scaling metrics.
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// 2023/08/01: added support for SVG fonts, enable by using '#define IMGUI_ENABLE_FREETYPE_LUNASVG' (#6591)
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// 2023/01/04: fixed a packing issue which in some occurrences would prevent large amount of glyphs from being packed correctly.
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// 2021/08/23: fixed crash when FT_Render_Glyph() fails to render a glyph and returns NULL.
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