forked from mirrors/gecko-dev
265e672179
# ignore-this-changeset --HG-- extra : amend_source : 4d301d3b0b8711c4692392aa76088ba7fd7d1022
129 lines
3.9 KiB
C++
129 lines
3.9 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "SourceSurfaceCairo.h"
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#include "DrawTargetCairo.h"
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#include "HelpersCairo.h"
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#include "DataSourceSurfaceWrapper.h"
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#include "cairo.h"
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namespace mozilla {
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namespace gfx {
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static SurfaceFormat CairoFormatToSurfaceFormat(cairo_format_t format) {
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switch (format) {
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case CAIRO_FORMAT_ARGB32:
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return SurfaceFormat::B8G8R8A8;
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case CAIRO_FORMAT_RGB24:
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return SurfaceFormat::B8G8R8X8;
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case CAIRO_FORMAT_RGB16_565:
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return SurfaceFormat::R5G6B5_UINT16;
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case CAIRO_FORMAT_A8:
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return SurfaceFormat::A8;
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default:
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return SurfaceFormat::B8G8R8A8;
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}
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}
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SourceSurfaceCairo::SourceSurfaceCairo(
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cairo_surface_t* aSurface, const IntSize& aSize,
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const SurfaceFormat& aFormat, DrawTargetCairo* aDrawTarget /* = nullptr */)
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: mSize(aSize),
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mFormat(aFormat),
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mSurface(aSurface),
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mDrawTarget(aDrawTarget) {
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cairo_surface_reference(mSurface);
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}
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SourceSurfaceCairo::~SourceSurfaceCairo() { cairo_surface_destroy(mSurface); }
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IntSize SourceSurfaceCairo::GetSize() const { return mSize; }
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SurfaceFormat SourceSurfaceCairo::GetFormat() const { return mFormat; }
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already_AddRefed<DataSourceSurface> SourceSurfaceCairo::GetDataSurface() {
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RefPtr<DataSourceSurface> dataSurf;
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if (cairo_surface_get_type(mSurface) == CAIRO_SURFACE_TYPE_IMAGE) {
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dataSurf = new DataSourceSurfaceCairo(mSurface);
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} else {
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cairo_surface_t* imageSurf = cairo_image_surface_create(
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GfxFormatToCairoFormat(mFormat), mSize.width, mSize.height);
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// Fill the new image surface with the contents of our surface.
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cairo_t* ctx = cairo_create(imageSurf);
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cairo_set_source_surface(ctx, mSurface, 0, 0);
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cairo_paint(ctx);
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cairo_destroy(ctx);
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dataSurf = new DataSourceSurfaceCairo(imageSurf);
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cairo_surface_destroy(imageSurf);
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}
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// We also need to make sure that the returned surface has
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// surface->GetType() == SurfaceType::DATA.
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return MakeAndAddRef<DataSourceSurfaceWrapper>(dataSurf);
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}
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cairo_surface_t* SourceSurfaceCairo::GetSurface() const { return mSurface; }
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void SourceSurfaceCairo::DrawTargetWillChange() {
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if (mDrawTarget) {
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mDrawTarget = nullptr;
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// We're about to lose our version of the surface, so make a copy of it.
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cairo_surface_t* surface = cairo_surface_create_similar(
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mSurface, GfxFormatToCairoContent(mFormat), mSize.width, mSize.height);
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cairo_t* ctx = cairo_create(surface);
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cairo_pattern_t* pat = cairo_pattern_create_for_surface(mSurface);
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cairo_set_source(ctx, pat);
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cairo_paint(ctx);
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cairo_destroy(ctx);
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cairo_pattern_destroy(pat);
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// Swap in this new surface.
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cairo_surface_destroy(mSurface);
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mSurface = surface;
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}
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}
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DataSourceSurfaceCairo::DataSourceSurfaceCairo(cairo_surface_t* imageSurf)
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: mImageSurface(imageSurf) {
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cairo_surface_reference(mImageSurface);
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}
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DataSourceSurfaceCairo::~DataSourceSurfaceCairo() {
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cairo_surface_destroy(mImageSurface);
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}
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unsigned char* DataSourceSurfaceCairo::GetData() {
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return cairo_image_surface_get_data(mImageSurface);
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}
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int32_t DataSourceSurfaceCairo::Stride() {
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return cairo_image_surface_get_stride(mImageSurface);
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}
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IntSize DataSourceSurfaceCairo::GetSize() const {
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IntSize size;
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size.width = cairo_image_surface_get_width(mImageSurface);
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size.height = cairo_image_surface_get_height(mImageSurface);
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return size;
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}
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SurfaceFormat DataSourceSurfaceCairo::GetFormat() const {
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return CairoFormatToSurfaceFormat(
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cairo_image_surface_get_format(mImageSurface));
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}
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cairo_surface_t* DataSourceSurfaceCairo::GetSurface() const {
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return mImageSurface;
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}
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} // namespace gfx
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} // namespace mozilla
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