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/* -*- 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
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