Adding upstream version 115.8.0esr.upstream/115.8.0esr

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 231 insertions, 0 deletions

diff --git a/gfx/2d/ScaledFontBase.cpp b/gfx/2d/ScaledFontBase.cpp
new file mode 100644
index 0000000000..cd52df3ccd
--- /dev/null
+++ b/gfx/2d/ScaledFontBase.cpp
@@ -0,0 +1,231 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+
+#include "ScaledFontBase.h"
+
+#include "PathSkia.h"
+#include "skia/include/core/SkFont.h"
+
+#ifdef USE_CAIRO
+#  include "PathCairo.h"
+#  include "DrawTargetCairo.h"
+#  include "HelpersCairo.h"
+#endif
+
+#include <vector>
+#include <cmath>
+
+namespace mozilla {
+namespace gfx {
+
+Atomic<uint32_t> UnscaledFont::sDeletionCounter(0);
+
+UnscaledFont::~UnscaledFont() { sDeletionCounter++; }
+
+Atomic<uint32_t> ScaledFont::sDeletionCounter(0);
+
+ScaledFont::~ScaledFont() { sDeletionCounter++; }
+
+ScaledFontBase::~ScaledFontBase() {
+  SkSafeUnref<SkTypeface>(mTypeface);
+  cairo_scaled_font_destroy(mScaledFont);
+}
+
+ScaledFontBase::ScaledFontBase(const RefPtr<UnscaledFont>& aUnscaledFont,
+                               Float aSize)
+    : ScaledFont(aUnscaledFont),
+      mTypeface(nullptr),
+      mScaledFont(nullptr),
+      mSize(aSize) {}
+
+SkTypeface* ScaledFontBase::GetSkTypeface() {
+  if (!mTypeface) {
+    SkTypeface* typeface = CreateSkTypeface();
+    if (!mTypeface.compareExchange(nullptr, typeface)) {
+      SkSafeUnref(typeface);
+    }
+  }
+  return mTypeface;
+}
+
+cairo_scaled_font_t* ScaledFontBase::GetCairoScaledFont() {
+  if (mScaledFont) {
+    return mScaledFont;
+  }
+
+  cairo_font_options_t* fontOptions = cairo_font_options_create();
+  cairo_font_face_t* fontFace = CreateCairoFontFace(fontOptions);
+  if (!fontFace) {
+    cairo_font_options_destroy(fontOptions);
+    return nullptr;
+  }
+
+  cairo_matrix_t sizeMatrix;
+  cairo_matrix_t identityMatrix;
+
+  cairo_matrix_init_scale(&sizeMatrix, mSize, mSize);
+  cairo_matrix_init_identity(&identityMatrix);
+
+  cairo_scaled_font_t* scaledFont = cairo_scaled_font_create(
+      fontFace, &sizeMatrix, &identityMatrix, fontOptions);
+
+  cairo_font_options_destroy(fontOptions);
+  cairo_font_face_destroy(fontFace);
+
+  if (cairo_scaled_font_status(scaledFont) != CAIRO_STATUS_SUCCESS) {
+    cairo_scaled_font_destroy(scaledFont);
+    return nullptr;
+  }
+
+  PrepareCairoScaledFont(scaledFont);
+  mScaledFont = scaledFont;
+  return mScaledFont;
+}
+
+SkPath ScaledFontBase::GetSkiaPathForGlyphs(const GlyphBuffer& aBuffer) {
+  SkTypeface* typeFace = GetSkTypeface();
+  MOZ_ASSERT(typeFace);
+
+  SkFont font(sk_ref_sp(typeFace), SkFloatToScalar(mSize));
+
+  std::vector<uint16_t> indices;
+  indices.resize(aBuffer.mNumGlyphs);
+  for (unsigned int i = 0; i < aBuffer.mNumGlyphs; i++) {
+    indices[i] = aBuffer.mGlyphs[i].mIndex;
+  }
+
+  struct Context {
+    const Glyph* mGlyph;
+    SkPath mPath;
+  } ctx = {aBuffer.mGlyphs};
+
+  font.getPaths(
+      indices.data(), indices.size(),
+      [](const SkPath* glyphPath, const SkMatrix& scaleMatrix, void* ctxPtr) {
+        Context& ctx = *reinterpret_cast<Context*>(ctxPtr);
+        if (glyphPath) {
+          SkMatrix transMatrix(scaleMatrix);
+          transMatrix.postTranslate(SkFloatToScalar(ctx.mGlyph->mPosition.x),
+                                    SkFloatToScalar(ctx.mGlyph->mPosition.y));
+          ctx.mPath.addPath(*glyphPath, transMatrix);
+        }
+        ++ctx.mGlyph;
+      },
+      &ctx);
+
+  return ctx.mPath;
+}
+
+already_AddRefed<Path> ScaledFontBase::GetPathForGlyphs(
+    const GlyphBuffer& aBuffer, const DrawTarget* aTarget) {
+  if (aTarget->GetBackendType() == BackendType::SKIA) {
+    SkPath path = GetSkiaPathForGlyphs(aBuffer);
+    return MakeAndAddRef<PathSkia>(path, FillRule::FILL_WINDING);
+  }
+#ifdef USE_CAIRO
+  if (aTarget->GetBackendType() == BackendType::CAIRO) {
+    auto* cairoScaledFont = GetCairoScaledFont();
+    if (!cairoScaledFont) {
+      MOZ_ASSERT_UNREACHABLE("Invalid scaled font");
+      return nullptr;
+    }
+
+    DrawTarget* dt = const_cast<DrawTarget*>(aTarget);
+    cairo_t* ctx = static_cast<cairo_t*>(
+        dt->GetNativeSurface(NativeSurfaceType::CAIRO_CONTEXT));
+
+    bool isNewContext = !ctx;
+    if (!ctx) {
+      ctx = cairo_create(DrawTargetCairo::GetDummySurface());
+      cairo_matrix_t mat;
+      GfxMatrixToCairoMatrix(aTarget->GetTransform(), mat);
+      cairo_set_matrix(ctx, &mat);
+    }
+
+    cairo_set_scaled_font(ctx, cairoScaledFont);
+
+    // Convert our GlyphBuffer into an array of Cairo glyphs.
+    std::vector<cairo_glyph_t> glyphs(aBuffer.mNumGlyphs);
+    for (uint32_t i = 0; i < aBuffer.mNumGlyphs; ++i) {
+      glyphs[i].index = aBuffer.mGlyphs[i].mIndex;
+      glyphs[i].x = aBuffer.mGlyphs[i].mPosition.x;
+      glyphs[i].y = aBuffer.mGlyphs[i].mPosition.y;
+    }
+
+    cairo_new_path(ctx);
+
+    cairo_glyph_path(ctx, &glyphs[0], aBuffer.mNumGlyphs);
+
+    RefPtr<PathCairo> newPath = new PathCairo(ctx);
+    if (isNewContext) {
+      cairo_destroy(ctx);
+    }
+
+    return newPath.forget();
+  }
+#endif
+  RefPtr<PathBuilder> builder = aTarget->CreatePathBuilder();
+  SkPath skPath = GetSkiaPathForGlyphs(aBuffer);
+  RefPtr<Path> path = MakeAndAddRef<PathSkia>(skPath, FillRule::FILL_WINDING);
+  path->StreamToSink(builder);
+  return builder->Finish();
+}
+
+void ScaledFontBase::CopyGlyphsToBuilder(const GlyphBuffer& aBuffer,
+                                         PathBuilder* aBuilder,
+                                         const Matrix* aTransformHint) {
+  BackendType backendType = aBuilder->GetBackendType();
+  if (backendType == BackendType::SKIA) {
+    PathBuilderSkia* builder = static_cast<PathBuilderSkia*>(aBuilder);
+    builder->AppendPath(GetSkiaPathForGlyphs(aBuffer));
+    return;
+  }
+#ifdef USE_CAIRO
+  if (backendType == BackendType::CAIRO) {
+    auto* cairoScaledFont = GetCairoScaledFont();
+    if (!cairoScaledFont) {
+      MOZ_ASSERT_UNREACHABLE("Invalid scaled font");
+      return;
+    }
+
+    PathBuilderCairo* builder = static_cast<PathBuilderCairo*>(aBuilder);
+    cairo_t* ctx = cairo_create(DrawTargetCairo::GetDummySurface());
+
+    if (aTransformHint) {
+      cairo_matrix_t mat;
+      GfxMatrixToCairoMatrix(*aTransformHint, mat);
+      cairo_set_matrix(ctx, &mat);
+    }
+
+    // Convert our GlyphBuffer into an array of Cairo glyphs.
+    std::vector<cairo_glyph_t> glyphs(aBuffer.mNumGlyphs);
+    for (uint32_t i = 0; i < aBuffer.mNumGlyphs; ++i) {
+      glyphs[i].index = aBuffer.mGlyphs[i].mIndex;
+      glyphs[i].x = aBuffer.mGlyphs[i].mPosition.x;
+      glyphs[i].y = aBuffer.mGlyphs[i].mPosition.y;
+    }
+
+    cairo_set_scaled_font(ctx, cairoScaledFont);
+    cairo_glyph_path(ctx, &glyphs[0], aBuffer.mNumGlyphs);
+
+    RefPtr<PathCairo> cairoPath = new PathCairo(ctx);
+    cairo_destroy(ctx);
+
+    cairoPath->AppendPathToBuilder(builder);
+    return;
+  }
+#endif
+  if (backendType == BackendType::RECORDING) {
+    SkPath skPath = GetSkiaPathForGlyphs(aBuffer);
+    RefPtr<Path> path = MakeAndAddRef<PathSkia>(skPath, FillRule::FILL_WINDING);
+    path->StreamToSink(aBuilder);
+    return;
+  }
+  MOZ_ASSERT(false, "Path not being copied");
+}
+
+}  // namespace gfx
+}  // namespace mozilla