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imgui_freetype: Added support for plutosvg to render OpenType SVG fonts. (#7927, #7187 + #6591, #6607)
See #7927 for details.
This commit is contained in:
Pascal Thomet
ocornut
parent
83ecc846dc
commit
04d9a04557
@ -93,6 +93,10 @@ Other changes:
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preventing use of external shortcuts not guarded by an ActiveId check. (#8048) [@geertbleyen]
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- InputText: ensure mouse cursor shape is set regardless of whether keyboard mode is
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enabled or not. (#6417)
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- imgui_freetype: Added support for plutosvg (as an alternative to lunasvg) to render
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OpenType SVG fonts. Requires defining IMGUI_ENABLE_FREETYPE_PLUTOSVG along with IMGUI_ENABLE_FREETYPE.
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Providing headers/librairies for plutosvg + plutovg is up to you (see #7927 for help).
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(#7927, #7187, #6591, #6607) [@pthom]
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- Backends: DX11, DX12, SDLRenderer2/3. Vulkan, WGPU: expose selected state in
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ImGui_ImplXXXX_RenderState structures during render loop. (#6969, #5834, #7468, #3590)
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- Backends: DX9, DX10, DX11, DX12, OpenGL, Vulkan, WGPU: Changed default texture sampler
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@ -83,10 +83,13 @@
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// On Windows you may use vcpkg with 'vcpkg install freetype --triplet=x64-windows' + 'vcpkg integrate install'.
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//#define IMGUI_ENABLE_FREETYPE
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//---- Use FreeType+lunasvg library to render OpenType SVG fonts (SVGinOT)
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// Requires lunasvg headers to be available in the include path + program to be linked with the lunasvg library (not provided).
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//---- Use FreeType + plutosvg or lunasvg to render OpenType SVG fonts (SVGinOT)
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// Only works in combination with IMGUI_ENABLE_FREETYPE.
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// (implementation is based on Freetype's rsvg-port.c which is licensed under CeCILL-C Free Software License Agreement)
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// - lunasvg is currently easier to acquire/install, as e.g. it is part of vcpkg.
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// - plutosvg will support more fonts and may load them faster. It currently requires to be built manually but it is fairly easy. See misc/freetype/README for instructions.
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// - Both require headers to be available in the include path + program to be linked with the library code (not provided).
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// - (note: lunasvg implementation is based on Freetype's rsvg-port.c which is licensed under CeCILL-C Free Software License Agreement)
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//#define IMGUI_ENABLE_FREETYPE_PLUTOSVG
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//#define IMGUI_ENABLE_FREETYPE_LUNASVG
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//---- Use stb_truetype to build and rasterize the font atlas (default)
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@ -39,6 +39,24 @@ You can use the `ImGuiFreeTypeBuilderFlags_LoadColor` flag to load certain color
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### Using OpenType SVG fonts (SVGinOT)
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- *SVG in Open Type* is a standard by Adobe and Mozilla for color OpenType and Open Font Format fonts. It allows font creators to embed complete SVG files within a font enabling full color and even animations.
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- Popular fonts such as [twemoji](https://github.com/13rac1/twemoji-color-font) and fonts made with [scfbuild](https://github.com/13rac1/scfbuild) is SVGinOT
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- Requires: [lunasvg](https://github.com/sammycage/lunasvg) v2.3.2 and above
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1. Add `#define IMGUI_ENABLE_FREETYPE_LUNASVG` in your `imconfig.h`.
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2. Get latest lunasvg binaries or build yourself. Under Windows you may use vcpkg with: `vcpkg install lunasvg --triplet=x64-windows`.
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- Two alternatives are possible to render SVG fonts: use "lunasvg" or "plutosvg". plutosvg will support some more fonts (e.g. NotoColorEmoji-Regular) and may load them faster.
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#### Using lunasvg
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Requires: [lunasvg](https://github.com/sammycage/lunasvg) v2.3.2 and above
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- Add `#define IMGUI_ENABLE_FREETYPE_LUNASVG` in your `imconfig.h`.
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- Get latest lunasvg binaries or build yourself. Under Windows you may use vcpkg with: `vcpkg install lunasvg --triplet=x64-windows`.
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#### Using plutosvg (and plutovg)
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- Add `#define IMGUI_ENABLE_FREETYPE_PLUTOSVG` in your `imconfig.h`.
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- Compile and link with plutosvg *and* plutovg (which is required by plutosvg)
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_Compilation hints for plutovg_
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- Compile all source files in `plutovg/source/*.c`
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- Add include directory: `plutovg/include` + `plutovg/stb`
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_Compilation hints for plutosvg_
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- Compile `plutosvg/source/plutosvg.c`
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- Add include directory: `plutosvg/source`
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- Add define: `PLUTOSVG_HAS_FREETYPE`
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- Link with: plutovg, freetype
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@ -6,8 +6,9 @@
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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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// 2024/10/17: added plutosvg support for SVG Fonts (seems faster/better than lunasvg). Enable by using '#define IMGUI_ENABLE_FREETYPE_PLUTOSVG'. (#7927)
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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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// 2023/08/01: 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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// 2021/03/05: added ImGuiFreeTypeBuilderFlags_Bitmap to load bitmap glyphs.
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@ -45,12 +46,21 @@
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#include FT_GLYPH_H // <freetype/ftglyph.h>
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#include FT_SYNTHESIS_H // <freetype/ftsynth.h>
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// Handle LunaSVG and PlutoSVG
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#if defined(IMGUI_ENABLE_FREETYPE_LUNASVG) && defined(IMGUI_ENABLE_FREETYPE_PLUTOSVG)
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#error "Cannot enable both IMGUI_ENABLE_FREETYPE_LUNASVG and IMGUI_ENABLE_FREETYPE_PLUTOSVG"
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#endif
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#ifdef IMGUI_ENABLE_FREETYPE_LUNASVG
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#include FT_OTSVG_H // <freetype/otsvg.h>
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#include FT_BBOX_H // <freetype/ftbbox.h>
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#include <lunasvg.h>
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#endif
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#ifdef IMGUI_ENABLE_FREETYPE_PLUTOSVG
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#include <plutosvg.h>
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#endif
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#if defined(IMGUI_ENABLE_FREETYPE_LUNASVG) || defined (IMGUI_ENABLE_FREETYPE_PLUTOSVG)
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#if !((FREETYPE_MAJOR >= 2) && (FREETYPE_MINOR >= 12))
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#error IMGUI_ENABLE_FREETYPE_LUNASVG requires FreeType version >= 2.12
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#error IMGUI_ENABLE_FREETYPE_PLUTOSVG or IMGUI_ENABLE_FREETYPE_LUNASVG requires FreeType version >= 2.12
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#endif
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#endif
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@ -269,11 +279,11 @@ namespace
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// Need an outline for this to work
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FT_GlyphSlot slot = Face->glyph;
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#ifdef IMGUI_ENABLE_FREETYPE_LUNASVG
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#if defined(IMGUI_ENABLE_FREETYPE_LUNASVG) || defined(IMGUI_ENABLE_FREETYPE_PLUTOSVG)
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IM_ASSERT(slot->format == FT_GLYPH_FORMAT_OUTLINE || slot->format == FT_GLYPH_FORMAT_BITMAP || slot->format == FT_GLYPH_FORMAT_SVG);
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#else
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#if ((FREETYPE_MAJOR >= 2) && (FREETYPE_MINOR >= 12))
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IM_ASSERT(slot->format != FT_GLYPH_FORMAT_SVG && "The font contains SVG glyphs, you'll need to enable IMGUI_ENABLE_FREETYPE_LUNASVG in imconfig.h and install required libraries in order to use this font");
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IM_ASSERT(slot->format != FT_GLYPH_FORMAT_SVG && "The font contains SVG glyphs, you'll need to enable IMGUI_ENABLE_FREETYPE_PLUTOSVG or IMGUI_ENABLE_FREETYPE_LUNASVG in imconfig.h and install required libraries in order to use this font");
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#endif
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IM_ASSERT(slot->format == FT_GLYPH_FORMAT_OUTLINE || slot->format == FT_GLYPH_FORMAT_BITMAP);
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#endif // IMGUI_ENABLE_FREETYPE_LUNASVG
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@ -810,6 +820,10 @@ static bool ImFontAtlasBuildWithFreeType(ImFontAtlas* atlas)
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SVG_RendererHooks hooks = { ImGuiLunasvgPortInit, ImGuiLunasvgPortFree, ImGuiLunasvgPortRender, ImGuiLunasvgPortPresetSlot };
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FT_Property_Set(ft_library, "ot-svg", "svg-hooks", &hooks);
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#endif // IMGUI_ENABLE_FREETYPE_LUNASVG
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#ifdef IMGUI_ENABLE_FREETYPE_PLUTOSVG
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// With plutosvg, use provided hooks
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FT_Property_Set(ft_library, "ot-svg", "svg-hooks", plutosvg_ft_svg_hooks());
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#endif // IMGUI_ENABLE_FREETYPE_PLUTOSVG
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bool ret = ImFontAtlasBuildWithFreeTypeEx(ft_library, atlas, atlas->FontBuilderFlags);
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FT_Done_Library(ft_library);
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@ -5,6 +5,13 @@
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#include "imgui.h" // IMGUI_API
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#ifndef IMGUI_DISABLE
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// Usage:
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// - Add '#define IMGUI_ENABLE_FREETYPE' in your imconfig to enable support for imgui_freetype in imgui.
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// Optional support for OpenType SVG fonts:
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// - Add '#define IMGUI_ENABLE_FREETYPE_PLUTOSVG' to use plutosvg (not provided). See #7927.
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// - Add '#define IMGUI_ENABLE_FREETYPE_LUNASVG' to use lunasvg (not provided). See #6591.
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// Forward declarations
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struct ImFontAtlas;
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struct ImFontBuilderIO;
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