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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
commit36d22d82aa202bb199967e9512281e9a53db42c9 (patch)
tree105e8c98ddea1c1e4784a60a5a6410fa416be2de /gfx/thebes/gfxMacFont.h
parentInitial commit. (diff)
downloadfirefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz
firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip
Adding upstream version 115.7.0esr.upstream/115.7.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'gfx/thebes/gfxMacFont.h')
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1 files changed, 91 insertions, 0 deletions
diff --git a/gfx/thebes/gfxMacFont.h b/gfx/thebes/gfxMacFont.h
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+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef GFX_MACFONT_H
+#define GFX_MACFONT_H
+
+#include "mozilla/MemoryReporting.h"
+#include "gfxFont.h"
+#include <ApplicationServices/ApplicationServices.h>
+
+#include "mozilla/gfx/UnscaledFontMac.h"
+
+class MacOSFontEntry;
+
+class gfxMacFont final : public gfxFont {
+ public:
+ gfxMacFont(const RefPtr<mozilla::gfx::UnscaledFontMac>& aUnscaledFont,
+ MacOSFontEntry* aFontEntry, const gfxFontStyle* aFontStyle);
+
+ CGFontRef GetCGFontRef() const { return mCGFont; }
+
+ /* override Measure to add padding for antialiasing */
+ RunMetrics Measure(const gfxTextRun* aTextRun, uint32_t aStart, uint32_t aEnd,
+ BoundingBoxType aBoundingBoxType,
+ DrawTarget* aDrawTargetForTightBoundingBox,
+ Spacing* aSpacing,
+ mozilla::gfx::ShapedTextFlags aOrientation) override;
+
+ // We need to provide hinted (non-linear) glyph widths if using a font
+ // with embedded color bitmaps (Apple Color Emoji), as Core Text renders
+ // the glyphs with non-linear scaling at small pixel sizes.
+ bool ProvidesGlyphWidths() const override {
+ return mVariationFont ||
+ mFontEntry->HasFontTable(TRUETYPE_TAG('s', 'b', 'i', 'x'));
+ }
+
+ int32_t GetGlyphWidth(uint16_t aGID) override;
+
+ bool GetGlyphBounds(uint16_t aGID, gfxRect* aBounds, bool aTight) override;
+
+ already_AddRefed<mozilla::gfx::ScaledFont> GetScaledFont(
+ const TextRunDrawParams& aRunParams) override;
+
+ bool ShouldRoundXOffset(cairo_t* aCairo) const override;
+
+ void AddSizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf,
+ FontCacheSizes* aSizes) const override;
+ void AddSizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf,
+ FontCacheSizes* aSizes) const override;
+
+ FontType GetType() const override { return FONT_TYPE_MAC; }
+
+ bool UseNativeColrFontSupport() const override;
+
+ protected:
+ ~gfxMacFont() override;
+
+ const Metrics& GetHorizontalMetrics() const override { return mMetrics; }
+
+ // override to prefer CoreText shaping with fonts that depend on AAT
+ bool ShapeText(DrawTarget* aDrawTarget, const char16_t* aText,
+ uint32_t aOffset, uint32_t aLength, Script aScript,
+ nsAtom* aLanguage, bool aVertical, RoundingFlags aRounding,
+ gfxShapedText* aShapedText) override;
+
+ void InitMetrics();
+ void InitMetricsFromPlatform();
+
+ // Get width and glyph ID for a character; uses aConvFactor
+ // to convert font units as returned by CG to actual dimensions
+ gfxFloat GetCharWidth(CFDataRef aCmap, char16_t aUniChar, uint32_t* aGlyphID,
+ gfxFloat aConvFactor);
+
+ // a strong reference to the CoreGraphics font
+ CGFontRef mCGFont;
+
+ // a Core Text font reference, created only if we're using CT to measure
+ // glyph widths; otherwise null.
+ CTFontRef mCTFont;
+
+ mozilla::UniquePtr<gfxFontShaper> mCoreTextShaper;
+
+ Metrics mMetrics;
+ nscolor mFontSmoothingBackgroundColor;
+
+ bool mVariationFont; // true if font has OpenType variations
+};
+
+#endif /* GFX_MACFONT_H */