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/*
* Copyright 2013 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkBitmapDevice_DEFINED
#define SkBitmapDevice_DEFINED
#include "include/core/SkBitmap.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkColor.h"
#include "include/core/SkImageInfo.h"
#include "include/core/SkRect.h"
#include "include/core/SkScalar.h"
#include "include/core/SkSize.h"
#include "src/core/SkDevice.h"
#include "src/core/SkGlyphRunPainter.h"
#include "src/core/SkRasterClip.h"
#include "src/core/SkRasterClipStack.h"
class SkImageFilterCache;
class SkMatrix;
class SkPaint;
class SkPath;
class SkPixmap;
class SkRasterHandleAllocator;
class SkRRect;
class SkSurface;
class SkSurfaceProps;
struct SkPoint;
#ifdef SK_ENABLE_SKSL
class SkMesh;
#endif
///////////////////////////////////////////////////////////////////////////////
class SkBitmapDevice : public SkBaseDevice {
public:
/**
* Construct a new device with the specified bitmap as its backend. It is
* valid for the bitmap to have no pixels associated with it. In that case,
* any drawing to this device will have no effect.
*/
SkBitmapDevice(const SkBitmap& bitmap);
/**
* Create a new device along with its requisite pixel memory using
* default SkSurfaceProps (i.e., kLegacyFontHost_InitType-style).
* Note: this entry point is slated for removal - no one should call it.
*/
static SkBitmapDevice* Create(const SkImageInfo& info);
/**
* Construct a new device with the specified bitmap as its backend. It is
* valid for the bitmap to have no pixels associated with it. In that case,
* any drawing to this device will have no effect.
*/
SkBitmapDevice(const SkBitmap& bitmap, const SkSurfaceProps& surfaceProps,
void* externalHandle = nullptr);
static SkBitmapDevice* Create(const SkImageInfo&, const SkSurfaceProps&,
SkRasterHandleAllocator* = nullptr);
protected:
void* getRasterHandle() const override { return fRasterHandle; }
/** These are called inside the per-device-layer loop for each draw call.
When these are called, we have already applied any saveLayer operations,
and are handling any looping from the paint.
*/
void drawPaint(const SkPaint& paint) override;
void drawPoints(SkCanvas::PointMode mode, size_t count,
const SkPoint[], const SkPaint& paint) override;
void drawRect(const SkRect& r, const SkPaint& paint) override;
void drawOval(const SkRect& oval, const SkPaint& paint) override;
void drawRRect(const SkRRect& rr, const SkPaint& paint) override;
/**
* If pathIsMutable, then the implementation is allowed to cast path to a
* non-const pointer and modify it in place (as an optimization). Canvas
* may do this to implement helpers such as drawOval, by placing a temp
* path on the stack to hold the representation of the oval.
*/
void drawPath(const SkPath&, const SkPaint&, bool pathIsMutable) override;
void drawImageRect(const SkImage*, const SkRect* src, const SkRect& dst,
const SkSamplingOptions&, const SkPaint&,
SkCanvas::SrcRectConstraint) override;
void drawVertices(const SkVertices*, sk_sp<SkBlender>, const SkPaint&, bool) override;
#ifdef SK_ENABLE_SKSL
void drawMesh(const SkMesh&, sk_sp<SkBlender>, const SkPaint&) override;
#endif
void drawAtlas(const SkRSXform[], const SkRect[], const SkColor[], int count, sk_sp<SkBlender>,
const SkPaint&) override;
///////////////////////////////////////////////////////////////////////////
void drawDevice(SkBaseDevice*, const SkSamplingOptions&, const SkPaint&) override;
void drawSpecial(SkSpecialImage*, const SkMatrix&, const SkSamplingOptions&,
const SkPaint&) override;
sk_sp<SkSpecialImage> makeSpecial(const SkBitmap&) override;
sk_sp<SkSpecialImage> makeSpecial(const SkImage*) override;
sk_sp<SkSpecialImage> snapSpecial(const SkIRect&, bool forceCopy = false) override;
void setImmutable() override { fBitmap.setImmutable(); }
///////////////////////////////////////////////////////////////////////////
void onDrawGlyphRunList(SkCanvas*,
const sktext::GlyphRunList&,
const SkPaint& initialPaint,
const SkPaint& drawingPaint) override;
bool onReadPixels(const SkPixmap&, int x, int y) override;
bool onWritePixels(const SkPixmap&, int, int) override;
bool onPeekPixels(SkPixmap*) override;
bool onAccessPixels(SkPixmap*) override;
void onSave() override;
void onRestore() override;
void onClipRect(const SkRect& rect, SkClipOp, bool aa) override;
void onClipRRect(const SkRRect& rrect, SkClipOp, bool aa) override;
void onClipPath(const SkPath& path, SkClipOp, bool aa) override;
void onClipShader(sk_sp<SkShader>) override;
void onClipRegion(const SkRegion& deviceRgn, SkClipOp) override;
void onReplaceClip(const SkIRect& rect) override;
bool onClipIsAA() const override;
bool onClipIsWideOpen() const override;
void onAsRgnClip(SkRegion*) const override;
void validateDevBounds(const SkIRect& r) override;
ClipType onGetClipType() const override;
SkIRect onDevClipBounds() const override;
void drawBitmap(const SkBitmap&, const SkMatrix&, const SkRect* dstOrNull,
const SkSamplingOptions&, const SkPaint&);
private:
friend class SkCanvas;
friend class SkDraw;
friend class SkDrawBase;
friend class SkDrawTiler;
friend class SkSurface_Raster;
class BDDraw;
// used to change the backend's pixels (and possibly config/rowbytes)
// but cannot change the width/height, so there should be no change to
// any clip information.
void replaceBitmapBackendForRasterSurface(const SkBitmap&) override;
SkBaseDevice* onCreateDevice(const CreateInfo&, const SkPaint*) override;
sk_sp<SkSurface> makeSurface(const SkImageInfo&, const SkSurfaceProps&) override;
SkImageFilterCache* getImageFilterCache() override;
SkBitmap fBitmap;
void* fRasterHandle = nullptr;
SkRasterClipStack fRCStack;
SkGlyphRunListPainterCPU fGlyphPainter;
using INHERITED = SkBaseDevice;
};
#endif // SkBitmapDevice_DEFINED