mirror of
https://github.com/classilla/tenfourfox.git
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163 lines
4.0 KiB
C++
163 lines
4.0 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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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
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CairoFormatToSurfaceFormat(cairo_format_t format)
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{
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switch (format)
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{
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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_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(cairo_surface_t* aSurface,
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const IntSize& aSize,
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const SurfaceFormat& aFormat,
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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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{
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cairo_surface_reference(mSurface);
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}
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SourceSurfaceCairo::~SourceSurfaceCairo()
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{
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cairo_surface_destroy(mSurface);
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}
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IntSize
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SourceSurfaceCairo::GetSize() const
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{
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return mSize;
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}
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SurfaceFormat
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SourceSurfaceCairo::GetFormat() const
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{
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return mFormat;
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}
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already_AddRefed<DataSourceSurface>
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SourceSurfaceCairo::GetDataSurface()
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{
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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(GfxFormatToCairoFormat(mFormat),
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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*
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SourceSurfaceCairo::GetSurface() const
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{
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return mSurface;
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}
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void
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SourceSurfaceCairo::DrawTargetWillChange()
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{
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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(mSurface,
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GfxFormatToCairoContent(mFormat),
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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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{
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cairo_surface_reference(mImageSurface);
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}
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DataSourceSurfaceCairo::~DataSourceSurfaceCairo()
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{
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cairo_surface_destroy(mImageSurface);
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}
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unsigned char *
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DataSourceSurfaceCairo::GetData()
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{
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return cairo_image_surface_get_data(mImageSurface);
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}
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int32_t
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DataSourceSurfaceCairo::Stride()
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{
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return cairo_image_surface_get_stride(mImageSurface);
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}
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IntSize
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DataSourceSurfaceCairo::GetSize() const
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{
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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
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DataSourceSurfaceCairo::GetFormat() const
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{
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return CairoFormatToSurfaceFormat(cairo_image_surface_get_format(mImageSurface));
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}
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cairo_surface_t*
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DataSourceSurfaceCairo::GetSurface() const
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{
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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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