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// Copyright (c) 2012 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/vector_platform_device_skia.h"
#include "skia/ext/bitmap_platform_device.h"
#include "third_party/skia/include/core/SkClipStack.h"
#include "third_party/skia/include/core/SkDraw.h"
#include "third_party/skia/include/core/SkRect.h"
#include "third_party/skia/include/core/SkRegion.h"
#include "third_party/skia/include/core/SkScalar.h"
namespace skia {
static inline SkBitmap makeABitmap(int width, int height) {
SkBitmap bitmap;
bitmap.setConfig(SkBitmap::kNo_Config, width, height);
return bitmap;
}
VectorPlatformDeviceSkia::VectorPlatformDeviceSkia(
const SkISize& pageSize,
const SkISize& contentSize,
const SkMatrix& initialTransform)
: SkPDFDevice(pageSize, contentSize, initialTransform) {
SetPlatformDevice(this, this);
}
VectorPlatformDeviceSkia::~VectorPlatformDeviceSkia() {
}
bool VectorPlatformDeviceSkia::SupportsPlatformPaint() {
return false;
}
PlatformSurface VectorPlatformDeviceSkia::BeginPlatformPaint() {
// Even when drawing a vector representation of the page, we have to
// provide a raster surface for plugins to render into - they don't have
// a vector interface. Therefore we create a BitmapPlatformDevice here
// and return the context from it, then layer on the raster data as an
// image in EndPlatformPaint.
DCHECK(raster_surface_ == NULL);
raster_surface_ = skia::AdoptRef(
BitmapPlatformDevice::CreateAndClear(width(), height(), false));
return raster_surface_->BeginPlatformPaint();
}
void VectorPlatformDeviceSkia::EndPlatformPaint() {
DCHECK(raster_surface_ != NULL);
SkPaint paint;
// SkPDFDevice checks the passed SkDraw for an empty clip (only). Fake
// it out by setting a non-empty clip.
SkDraw draw;
SkRegion clip(SkIRect::MakeWH(width(), height()));
draw.fClip=&clip;
drawSprite(draw, raster_surface_->accessBitmap(false), 0, 0, paint);
// BitmapPlatformDevice matches begin and end calls.
raster_surface_->EndPlatformPaint();
raster_surface_.clear();
}
#if defined(OS_WIN)
void VectorPlatformDeviceSkia::DrawToNativeContext(HDC dc,
int x,
int y,
const RECT* src_rect) {
SkASSERT(false);
}
#elif defined(OS_MACOSX)
void VectorPlatformDeviceSkia::DrawToNativeContext(CGContext* context, int x,
int y, const CGRect* src_rect) {
SkASSERT(false);
}
CGContextRef VectorPlatformDeviceSkia::GetBitmapContext() {
SkASSERT(false);
return NULL;
}
#elif defined(OS_POSIX)
void VectorPlatformDeviceSkia::DrawToNativeContext(
PlatformSurface surface, int x, int y, const PlatformRect* src_rect) {
// Should never be called on Linux.
SkASSERT(false);
}
#endif
} // namespace skia
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