1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/2d/SourceSurfaceCairo.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,164 @@
1.4 +/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
1.5 + * This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#include "SourceSurfaceCairo.h"
1.10 +#include "DrawTargetCairo.h"
1.11 +#include "HelpersCairo.h"
1.12 +#include "DataSourceSurfaceWrapper.h"
1.13 +
1.14 +#include "cairo.h"
1.15 +
1.16 +namespace mozilla {
1.17 +namespace gfx {
1.18 +
1.19 +static SurfaceFormat
1.20 +CairoFormatToSurfaceFormat(cairo_format_t format)
1.21 +{
1.22 + switch (format)
1.23 + {
1.24 + case CAIRO_FORMAT_ARGB32:
1.25 + return SurfaceFormat::B8G8R8A8;
1.26 + case CAIRO_FORMAT_RGB24:
1.27 + return SurfaceFormat::B8G8R8X8;
1.28 + case CAIRO_FORMAT_A8:
1.29 + return SurfaceFormat::A8;
1.30 + default:
1.31 + return SurfaceFormat::B8G8R8A8;
1.32 + }
1.33 +}
1.34 +
1.35 +SourceSurfaceCairo::SourceSurfaceCairo(cairo_surface_t* aSurface,
1.36 + const IntSize& aSize,
1.37 + const SurfaceFormat& aFormat,
1.38 + DrawTargetCairo* aDrawTarget /* = nullptr */)
1.39 + : mSize(aSize)
1.40 + , mFormat(aFormat)
1.41 + , mSurface(aSurface)
1.42 + , mDrawTarget(aDrawTarget)
1.43 +{
1.44 + cairo_surface_reference(mSurface);
1.45 +}
1.46 +
1.47 +SourceSurfaceCairo::~SourceSurfaceCairo()
1.48 +{
1.49 + cairo_surface_destroy(mSurface);
1.50 +}
1.51 +
1.52 +IntSize
1.53 +SourceSurfaceCairo::GetSize() const
1.54 +{
1.55 + return mSize;
1.56 +}
1.57 +
1.58 +SurfaceFormat
1.59 +SourceSurfaceCairo::GetFormat() const
1.60 +{
1.61 + return mFormat;
1.62 +}
1.63 +
1.64 +TemporaryRef<DataSourceSurface>
1.65 +SourceSurfaceCairo::GetDataSurface()
1.66 +{
1.67 + RefPtr<DataSourceSurface> dataSurf;
1.68 +
1.69 + if (cairo_surface_get_type(mSurface) == CAIRO_SURFACE_TYPE_IMAGE) {
1.70 + dataSurf = new DataSourceSurfaceCairo(mSurface);
1.71 + } else {
1.72 + cairo_surface_t* imageSurf = cairo_image_surface_create(GfxFormatToCairoFormat(mFormat),
1.73 + mSize.width, mSize.height);
1.74 +
1.75 + // Fill the new image surface with the contents of our surface.
1.76 + cairo_t* ctx = cairo_create(imageSurf);
1.77 + cairo_set_source_surface(ctx, mSurface, 0, 0);
1.78 + cairo_paint(ctx);
1.79 + cairo_destroy(ctx);
1.80 +
1.81 + dataSurf = new DataSourceSurfaceCairo(imageSurf);
1.82 + cairo_surface_destroy(imageSurf);
1.83 + }
1.84 +
1.85 + // We also need to make sure that the returned surface has
1.86 + // surface->GetType() == SurfaceType::DATA.
1.87 + dataSurf = new DataSourceSurfaceWrapper(dataSurf);
1.88 +
1.89 + return dataSurf;
1.90 +}
1.91 +
1.92 +cairo_surface_t*
1.93 +SourceSurfaceCairo::GetSurface() const
1.94 +{
1.95 + return mSurface;
1.96 +}
1.97 +
1.98 +void
1.99 +SourceSurfaceCairo::DrawTargetWillChange()
1.100 +{
1.101 + if (mDrawTarget) {
1.102 + mDrawTarget = nullptr;
1.103 +
1.104 + // We're about to lose our version of the surface, so make a copy of it.
1.105 + cairo_surface_t* surface = cairo_surface_create_similar(mSurface,
1.106 + GfxFormatToCairoContent(mFormat),
1.107 + mSize.width, mSize.height);
1.108 + cairo_t* ctx = cairo_create(surface);
1.109 + cairo_pattern_t* pat = cairo_pattern_create_for_surface(mSurface);
1.110 + cairo_set_source(ctx, pat);
1.111 + cairo_paint(ctx);
1.112 + cairo_destroy(ctx);
1.113 + cairo_pattern_destroy(pat);
1.114 +
1.115 + // Swap in this new surface.
1.116 + cairo_surface_destroy(mSurface);
1.117 + mSurface = surface;
1.118 + }
1.119 +}
1.120 +
1.121 +DataSourceSurfaceCairo::DataSourceSurfaceCairo(cairo_surface_t* imageSurf)
1.122 + : mImageSurface(imageSurf)
1.123 +{
1.124 + cairo_surface_reference(mImageSurface);
1.125 +}
1.126 +
1.127 +DataSourceSurfaceCairo::~DataSourceSurfaceCairo()
1.128 +{
1.129 + cairo_surface_destroy(mImageSurface);
1.130 +}
1.131 +
1.132 +unsigned char *
1.133 +DataSourceSurfaceCairo::GetData()
1.134 +{
1.135 + return cairo_image_surface_get_data(mImageSurface);
1.136 +}
1.137 +
1.138 +int32_t
1.139 +DataSourceSurfaceCairo::Stride()
1.140 +{
1.141 + return cairo_image_surface_get_stride(mImageSurface);
1.142 +}
1.143 +
1.144 +IntSize
1.145 +DataSourceSurfaceCairo::GetSize() const
1.146 +{
1.147 + IntSize size;
1.148 + size.width = cairo_image_surface_get_width(mImageSurface);
1.149 + size.height = cairo_image_surface_get_height(mImageSurface);
1.150 +
1.151 + return size;
1.152 +}
1.153 +
1.154 +SurfaceFormat
1.155 +DataSourceSurfaceCairo::GetFormat() const
1.156 +{
1.157 + return CairoFormatToSurfaceFormat(cairo_image_surface_get_format(mImageSurface));
1.158 +}
1.159 +
1.160 +cairo_surface_t*
1.161 +DataSourceSurfaceCairo::GetSurface() const
1.162 +{
1.163 + return mImageSurface;
1.164 +}
1.165 +
1.166 +}
1.167 +}
