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// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "skia/ext/platform_canvas_linux.h"
#include <cairo/cairo.h>
#include "skia/ext/platform_device_linux.h"
#include "skia/ext/bitmap_platform_device_linux.h"
#include "third_party/skia/include/core/SkTypes.h"
namespace skia {
PlatformCanvasLinux::PlatformCanvasLinux() : SkCanvas() {
}
PlatformCanvasLinux::PlatformCanvasLinux(int width, int height, bool is_opaque)
: SkCanvas() {
if (!initialize(width, height, is_opaque))
SK_CRASH();
}
PlatformCanvasLinux::PlatformCanvasLinux(int width, int height, bool is_opaque,
uint8_t* data)
: SkCanvas() {
if (!initialize(width, height, is_opaque, data))
SK_CRASH();
}
PlatformCanvasLinux::~PlatformCanvasLinux() {
}
bool PlatformCanvasLinux::initialize(int width, int height, bool is_opaque) {
SkDevice* device = createPlatformDevice(width, height, is_opaque);
if (!device)
return false;
setDevice(device);
device->unref(); // was created with refcount 1, and setDevice also refs
return true;
}
bool PlatformCanvasLinux::initialize(int width, int height, bool is_opaque,
uint8_t* data) {
SkDevice* device =
BitmapPlatformDeviceLinux::Create(width, height, is_opaque, data);
if (!device)
return false;
setDevice(device);
device->unref(); // was created with refcount 1, and setDevice also refs
return true;
}
cairo_surface_t* PlatformCanvasLinux::beginPlatformPaint() {
return getTopPlatformDevice().beginPlatformPaint();
}
PlatformDeviceLinux& PlatformCanvasLinux::getTopPlatformDevice() const {
// All of our devices should be our special PlatformDevice.
SkCanvas::LayerIter iter(const_cast<PlatformCanvasLinux*>(this), false);
return *static_cast<PlatformDeviceLinux*>(iter.device());
}
SkDevice* PlatformCanvasLinux::createDevice(SkBitmap::Config config,
int width,
int height,
bool is_opaque, bool isForLayer) {
SkASSERT(config == SkBitmap::kARGB_8888_Config);
return createPlatformDevice(width, height, is_opaque);
}
SkDevice* PlatformCanvasLinux::createPlatformDevice(int width,
int height,
bool is_opaque) {
return BitmapPlatformDeviceLinux::Create(width, height, is_opaque);
}
// static
size_t PlatformCanvasLinux::StrideForWidth(unsigned width) {
return cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32, width);
}
} // namespace skia
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