1 files changed, 164 insertions, 0 deletions
diff --git a/gfx/2d/SourceSurfaceCairo.cpp b/gfx/2d/SourceSurfaceCairo.cpp
new file mode 100644
index 000000000..ba8498b84
--- /dev/null
+++ b/gfx/2d/SourceSurfaceCairo.cpp
@@ -0,0 +1,164 @@
+/* -*- 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/. */
+
+#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