| /* |
| * Copyright 2016 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file |
| */ |
| |
| #include "SkCanvas.h" |
| #include "SkSpecialImage.h" |
| #include "SkSpecialSurface.h" |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| class SkSpecialImage_Base : public SkSpecialImage { |
| public: |
| SkSpecialImage_Base(const SkIRect& subset) : INHERITED(subset) { } |
| virtual ~SkSpecialImage_Base() { } |
| |
| virtual void onDraw(SkCanvas*, int x, int y, const SkPaint*) const = 0; |
| |
| virtual bool onPeekPixels(SkPixmap*) const { return false; } |
| |
| virtual GrTexture* onPeekTexture() const { return nullptr; } |
| |
| virtual SkSpecialSurface* onNewSurface(const SkImageInfo& info) const { return nullptr; } |
| |
| private: |
| typedef SkSpecialImage INHERITED; |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| static inline const SkSpecialImage_Base* as_IB(const SkSpecialImage* image) { |
| return static_cast<const SkSpecialImage_Base*>(image); |
| } |
| |
| void SkSpecialImage::draw(SkCanvas* canvas, int x, int y, const SkPaint* paint) const { |
| return as_IB(this)->onDraw(canvas, x, y, paint); |
| } |
| |
| bool SkSpecialImage::peekPixels(SkPixmap* pixmap) const { |
| return as_IB(this)->onPeekPixels(pixmap); |
| } |
| |
| GrTexture* SkSpecialImage::peekTexture() const { |
| return as_IB(this)->onPeekTexture(); |
| } |
| |
| SkSpecialSurface* SkSpecialImage::newSurface(const SkImageInfo& info) const { |
| return as_IB(this)->onNewSurface(info); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| #include "SkImage.h" |
| #if SK_SUPPORT_GPU |
| #include "SkGr.h" |
| #include "SkGrPriv.h" |
| #endif |
| |
| class SkSpecialImage_Image : public SkSpecialImage_Base { |
| public: |
| SkSpecialImage_Image(const SkIRect& subset, const SkImage* image) |
| : INHERITED(subset) |
| , fImage(SkRef(image)) { |
| } |
| |
| ~SkSpecialImage_Image() override { } |
| |
| void onDraw(SkCanvas* canvas, int x, int y, const SkPaint* paint) const override { |
| SkRect dst = SkRect::MakeXYWH(x, y, this->subset().width(), this->subset().height()); |
| |
| canvas->drawImageRect(fImage, this->subset(), |
| dst, paint, SkCanvas::kStrict_SrcRectConstraint); |
| } |
| |
| bool onPeekPixels(SkPixmap* pixmap) const override { |
| return fImage->peekPixels(pixmap); |
| } |
| |
| GrTexture* onPeekTexture() const override { return fImage->getTexture(); } |
| |
| SkSpecialSurface* onNewSurface(const SkImageInfo& info) const override { |
| #if SK_SUPPORT_GPU |
| GrTexture* texture = fImage->getTexture(); |
| if (texture) { |
| GrSurfaceDesc desc = GrImageInfoToSurfaceDesc(info); |
| desc.fFlags = kRenderTarget_GrSurfaceFlag; |
| |
| return SkSpecialSurface::NewRenderTarget(texture->getContext(), desc); |
| } |
| #endif |
| return SkSpecialSurface::NewRaster(info, nullptr); |
| } |
| |
| private: |
| SkAutoTUnref<const SkImage> fImage; |
| |
| typedef SkSpecialImage_Base INHERITED; |
| }; |
| |
| #ifdef SK_DEBUG |
| static bool rect_fits(const SkIRect& rect, int width, int height) { |
| return rect.fLeft >= 0 && rect.fLeft < width && rect.fLeft < rect.fRight && |
| rect.fRight >= 0 && rect.fRight <= width && |
| rect.fTop >= 0 && rect.fTop < height && rect.fTop < rect.fBottom && |
| rect.fBottom >= 0 && rect.fBottom <= height; |
| } |
| #endif |
| |
| SkSpecialImage* SkSpecialImage::NewFromImage(const SkIRect& subset, const SkImage* image) { |
| SkASSERT(rect_fits(subset, image->width(), image->height())); |
| return new SkSpecialImage_Image(subset, image); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| #include "SkBitmap.h" |
| #include "SkImageInfo.h" |
| #include "SkPixelRef.h" |
| |
| class SkSpecialImage_Raster : public SkSpecialImage_Base { |
| public: |
| SkSpecialImage_Raster(const SkIRect& subset, const SkBitmap& bm) |
| : INHERITED(subset) |
| , fBitmap(bm) { |
| if (bm.pixelRef()->isPreLocked()) { |
| // we only preemptively lock if there is no chance of triggering something expensive |
| // like a lazy decode or imagegenerator. PreLocked means it is flat pixels already. |
| fBitmap.lockPixels(); |
| } |
| } |
| |
| ~SkSpecialImage_Raster() override { } |
| |
| void onDraw(SkCanvas* canvas, int x, int y, const SkPaint* paint) const override { |
| SkRect dst = SkRect::MakeXYWH(x, y, |
| this->subset().width(), this->subset().height()); |
| |
| canvas->drawBitmapRect(fBitmap, this->subset(), |
| dst, paint, SkCanvas::kStrict_SrcRectConstraint); |
| } |
| |
| bool onPeekPixels(SkPixmap* pixmap) const override { |
| const SkImageInfo info = fBitmap.info(); |
| if ((kUnknown_SkColorType == info.colorType()) || !fBitmap.getPixels()) { |
| return false; |
| } |
| const void* pixels = fBitmap.getPixels(); |
| if (pixels) { |
| if (pixmap) { |
| pixmap->reset(info, pixels, fBitmap.rowBytes()); |
| } |
| return true; |
| } |
| return false; |
| } |
| |
| SkSpecialSurface* onNewSurface(const SkImageInfo& info) const override { |
| return SkSpecialSurface::NewRaster(info, nullptr); |
| } |
| |
| private: |
| SkBitmap fBitmap; |
| |
| typedef SkSpecialImage_Base INHERITED; |
| }; |
| |
| SkSpecialImage* SkSpecialImage::NewFromRaster(const SkIRect& subset, const SkBitmap& bm) { |
| SkASSERT(nullptr == bm.getTexture()); |
| SkASSERT(rect_fits(subset, bm.width(), bm.height())); |
| return new SkSpecialImage_Raster(subset, bm); |
| } |
| |
| #if SK_SUPPORT_GPU |
| /////////////////////////////////////////////////////////////////////////////// |
| #include "GrTexture.h" |
| |
| class SkSpecialImage_Gpu : public SkSpecialImage_Base { |
| public: |
| SkSpecialImage_Gpu(const SkIRect& subset, GrTexture* tex) |
| : INHERITED(subset) |
| , fTexture(SkRef(tex)) { |
| } |
| |
| ~SkSpecialImage_Gpu() override { } |
| |
| void onDraw(SkCanvas* canvas, int x, int y, const SkPaint* paint) const override { |
| SkRect dst = SkRect::MakeXYWH(x, y, |
| this->subset().width(), this->subset().height()); |
| |
| SkBitmap bm; |
| |
| static const bool kUnknownOpacity = false; |
| GrWrapTextureInBitmap(fTexture, |
| fTexture->width(), fTexture->height(), kUnknownOpacity, &bm); |
| |
| canvas->drawBitmapRect(bm, this->subset(), |
| dst, paint, SkCanvas::kStrict_SrcRectConstraint); |
| } |
| |
| GrTexture* onPeekTexture() const override { return fTexture; } |
| |
| SkSpecialSurface* onNewSurface(const SkImageInfo& info) const override { |
| GrSurfaceDesc desc = GrImageInfoToSurfaceDesc(info); |
| desc.fFlags = kRenderTarget_GrSurfaceFlag; |
| |
| return SkSpecialSurface::NewRenderTarget(fTexture->getContext(), desc); |
| } |
| |
| private: |
| SkAutoTUnref<GrTexture> fTexture; |
| |
| typedef SkSpecialImage_Base INHERITED; |
| }; |
| |
| SkSpecialImage* SkSpecialImage::NewFromGpu(const SkIRect& subset, GrTexture* tex) { |
| SkASSERT(rect_fits(subset, tex->width(), tex->height())); |
| return new SkSpecialImage_Gpu(subset, tex); |
| } |
| |
| #else |
| |
| SkSpecialImage* SkSpecialImage::NewFromGpu(const SkIRect& subset, GrTexture* tex) { |
| return nullptr; |
| } |
| |
| #endif |