1 files changed, 129 insertions, 0 deletions
diff --git a/gfx/2d/SourceSurfaceCairo.cpp b/gfx/2d/SourceSurfaceCairo.cpp
new file mode 100644
index 0000000000..3bf380c35f
--- /dev/null
+++ b/gfx/2d/SourceSurfaceCairo.cpp
@@ -0,0 +1,129 @@
+/* -*- 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 "SourceSurfaceCairo.h"
+#include "DrawTargetCairo.h"
+#include "HelpersCairo.h"
+#include "DataSourceSurfaceWrapper.h"
+
+#include "cairo.h"
+
+namespace mozilla {
+namespace gfx {
+
+static SurfaceFormat CairoFormatToSurfaceFormat(cairo_format_t format) {
+  switch (format) {
+    case CAIRO_FORMAT_ARGB32:
+      return SurfaceFormat::B8G8R8A8;
+    case CAIRO_FORMAT_RGB24:
+      return SurfaceFormat::B8G8R8X8;
+    case CAIRO_FORMAT_RGB16_565:
+      return SurfaceFormat::R5G6B5_UINT16;
+    case CAIRO_FORMAT_A8:
+      return SurfaceFormat::A8;
+    default:
+      return SurfaceFormat::B8G8R8A8;
+  }
+}
+
+SourceSurfaceCairo::SourceSurfaceCairo(
+    cairo_surface_t* aSurface, const IntSize& aSize,
+    const SurfaceFormat& aFormat, DrawTargetCairo* aDrawTarget /* = nullptr */)
+    : mSize(aSize),
+      mFormat(aFormat),
+      mSurface(aSurface),
+      mDrawTarget(aDrawTarget) {
+  cairo_surface_reference(mSurface);
+}
+
+SourceSurfaceCairo::~SourceSurfaceCairo() { cairo_surface_destroy(mSurface); }
+
+IntSize SourceSurfaceCairo::GetSize() const { return mSize; }
+
+SurfaceFormat SourceSurfaceCairo::GetFormat() const { return mFormat; }
+
+already_AddRefed<DataSourceSurface> SourceSurfaceCairo::GetDataSurface() {
+  RefPtr<DataSourceSurface> dataSurf;
+
+  if (cairo_surface_get_type(mSurface) == CAIRO_SURFACE_TYPE_IMAGE) {
+    dataSurf = new DataSourceSurfaceCairo(mSurface);
+  } else {
+    cairo_surface_t* imageSurf = cairo_image_surface_create(
+        GfxFormatToCairoFormat(mFormat), mSize.width, mSize.height);
+
+    // Fill the new image surface with the contents of our surface.
+    cairo_t* ctx = cairo_create(imageSurf);
+    cairo_set_source_surface(ctx, mSurface, 0, 0);
+    cairo_paint(ctx);
+    cairo_destroy(ctx);
+
+    dataSurf = new DataSourceSurfaceCairo(imageSurf);
+    cairo_surface_destroy(imageSurf);
+  }
+
+  // We also need to make sure that the returned surface has
+  // surface->GetType() == SurfaceType::DATA.
+  return MakeAndAddRef<DataSourceSurfaceWrapper>(dataSurf);
+}
+
+cairo_surface_t* SourceSurfaceCairo::GetSurface() const { return mSurface; }
+
+void SourceSurfaceCairo::DrawTargetWillChange() {
+  if (mDrawTarget) {
+    mDrawTarget = nullptr;
+
+    // We're about to lose our version of the surface, so make a copy of it.
+    cairo_surface_t* surface = cairo_surface_create_similar(
+        mSurface, GfxFormatToCairoContent(mFormat), mSize.width, mSize.height);
+    cairo_t* ctx = cairo_create(surface);
+    cairo_pattern_t* pat = cairo_pattern_create_for_surface(mSurface);
+    cairo_set_source(ctx, pat);
+    cairo_paint(ctx);
+    cairo_destroy(ctx);
+    cairo_pattern_destroy(pat);
+
+    // Swap in this new surface.
+    cairo_surface_destroy(mSurface);
+    mSurface = surface;
+  }
+}
+
+DataSourceSurfaceCairo::DataSourceSurfaceCairo(cairo_surface_t* imageSurf)
+    : mImageSurface(imageSurf) {
+  cairo_surface_reference(mImageSurface);
+}
+
+DataSourceSurfaceCairo::~DataSourceSurfaceCairo() {
+  cairo_surface_destroy(mImageSurface);
+}
+
+unsigned char* DataSourceSurfaceCairo::GetData() {
+  return cairo_image_surface_get_data(mImageSurface);
+}
+
+int32_t DataSourceSurfaceCairo::Stride() {
+  return cairo_image_surface_get_stride(mImageSurface);
+}
+
+IntSize DataSourceSurfaceCairo::GetSize() const {
+  IntSize size;
+  size.width = cairo_image_surface_get_width(mImageSurface);
+  size.height = cairo_image_surface_get_height(mImageSurface);
+
+  return size;
+}
+
+SurfaceFormat DataSourceSurfaceCairo::GetFormat() const {
+  return CairoFormatToSurfaceFormat(
+      cairo_image_surface_get_format(mImageSurface));
+}
+
+cairo_surface_t* DataSourceSurfaceCairo::GetSurface() const {
+  return mImageSurface;
+}
+
+}  // namespace gfx
+}  // namespace mozilla