| /* |
| * Copyright 2008 The Android Open Source Project |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "SkCanvas.h" |
| |
| #include "SkArenaAlloc.h" |
| #include "SkBitmapDevice.h" |
| #include "SkCanvasPriv.h" |
| #include "SkClipOpPriv.h" |
| #include "SkClipStack.h" |
| #include "SkColorFilter.h" |
| #include "SkDraw.h" |
| #include "SkDrawLooper.h" |
| #include "SkGlyphCache.h" |
| #include "SkGlyphRun.h" |
| #include "SkImage.h" |
| #include "SkImageFilter.h" |
| #include "SkImageFilterCache.h" |
| #include "SkImage_Base.h" |
| #include "SkLatticeIter.h" |
| #include "SkMSAN.h" |
| #include "SkMakeUnique.h" |
| #include "SkMatrixUtils.h" |
| #include "SkMetaData.h" |
| #include "SkNoDrawCanvas.h" |
| #include "SkNx.h" |
| #include "SkPaintPriv.h" |
| #include "SkPatchUtils.h" |
| #include "SkPathEffect.h" |
| #include "SkPicture.h" |
| #include "SkRRect.h" |
| #include "SkRasterClip.h" |
| #include "SkRasterHandleAllocator.h" |
| #include "SkSpecialImage.h" |
| #include "SkStrikeCache.h" |
| #include "SkString.h" |
| #include "SkSurface_Base.h" |
| #include "SkTLazy.h" |
| #include "SkTextBlob.h" |
| #include "SkTextFormatParams.h" |
| #include "SkTo.h" |
| #include "SkTraceEvent.h" |
| #include "SkVertices.h" |
| |
| #include <new> |
| |
| #if SK_SUPPORT_GPU |
| #include "GrContext.h" |
| #include "SkGr.h" |
| #endif |
| |
| #define RETURN_ON_NULL(ptr) do { if (nullptr == (ptr)) return; } while (0) |
| #define RETURN_ON_FALSE(pred) do { if (!(pred)) return; } while (0) |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| /* |
| * Return true if the drawing this rect would hit every pixels in the canvas. |
| * |
| * Returns false if |
| * - rect does not contain the canvas' bounds |
| * - paint is not fill |
| * - paint would blur or otherwise change the coverage of the rect |
| */ |
| bool SkCanvas::wouldOverwriteEntireSurface(const SkRect* rect, const SkPaint* paint, |
| ShaderOverrideOpacity overrideOpacity) const { |
| static_assert((int)SkPaintPriv::kNone_ShaderOverrideOpacity == |
| (int)kNone_ShaderOverrideOpacity, |
| "need_matching_enums0"); |
| static_assert((int)SkPaintPriv::kOpaque_ShaderOverrideOpacity == |
| (int)kOpaque_ShaderOverrideOpacity, |
| "need_matching_enums1"); |
| static_assert((int)SkPaintPriv::kNotOpaque_ShaderOverrideOpacity == |
| (int)kNotOpaque_ShaderOverrideOpacity, |
| "need_matching_enums2"); |
| |
| const SkISize size = this->getBaseLayerSize(); |
| const SkRect bounds = SkRect::MakeIWH(size.width(), size.height()); |
| |
| // if we're clipped at all, we can't overwrite the entire surface |
| { |
| SkBaseDevice* base = this->getDevice(); |
| SkBaseDevice* top = this->getTopDevice(); |
| if (base != top) { |
| return false; // we're in a saveLayer, so conservatively don't assume we'll overwrite |
| } |
| if (!base->clipIsWideOpen()) { |
| return false; |
| } |
| } |
| |
| if (rect) { |
| if (!this->getTotalMatrix().isScaleTranslate()) { |
| return false; // conservative |
| } |
| |
| SkRect devRect; |
| this->getTotalMatrix().mapRectScaleTranslate(&devRect, *rect); |
| if (!devRect.contains(bounds)) { |
| return false; |
| } |
| } |
| |
| if (paint) { |
| SkPaint::Style paintStyle = paint->getStyle(); |
| if (!(paintStyle == SkPaint::kFill_Style || |
| paintStyle == SkPaint::kStrokeAndFill_Style)) { |
| return false; |
| } |
| if (paint->getMaskFilter() || paint->getLooper() |
| || paint->getPathEffect() || paint->getImageFilter()) { |
| return false; // conservative |
| } |
| } |
| return SkPaintPriv::Overwrites(paint, (SkPaintPriv::ShaderOverrideOpacity)overrideOpacity); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| // experimental for faster tiled drawing... |
| //#define SK_TRACE_SAVERESTORE |
| |
| #ifdef SK_TRACE_SAVERESTORE |
| static int gLayerCounter; |
| static void inc_layer() { ++gLayerCounter; printf("----- inc layer %d\n", gLayerCounter); } |
| static void dec_layer() { --gLayerCounter; printf("----- dec layer %d\n", gLayerCounter); } |
| |
| static int gRecCounter; |
| static void inc_rec() { ++gRecCounter; printf("----- inc rec %d\n", gRecCounter); } |
| static void dec_rec() { --gRecCounter; printf("----- dec rec %d\n", gRecCounter); } |
| |
| static int gCanvasCounter; |
| static void inc_canvas() { ++gCanvasCounter; printf("----- inc canvas %d\n", gCanvasCounter); } |
| static void dec_canvas() { --gCanvasCounter; printf("----- dec canvas %d\n", gCanvasCounter); } |
| #else |
| #define inc_layer() |
| #define dec_layer() |
| #define inc_rec() |
| #define dec_rec() |
| #define inc_canvas() |
| #define dec_canvas() |
| #endif |
| |
| typedef SkTLazy<SkPaint> SkLazyPaint; |
| |
| void SkCanvas::predrawNotify(bool willOverwritesEntireSurface) { |
| if (fSurfaceBase) { |
| fSurfaceBase->aboutToDraw(willOverwritesEntireSurface |
| ? SkSurface::kDiscard_ContentChangeMode |
| : SkSurface::kRetain_ContentChangeMode); |
| } |
| } |
| |
| void SkCanvas::predrawNotify(const SkRect* rect, const SkPaint* paint, |
| ShaderOverrideOpacity overrideOpacity) { |
| if (fSurfaceBase) { |
| SkSurface::ContentChangeMode mode = SkSurface::kRetain_ContentChangeMode; |
| // Since willOverwriteAllPixels() may not be complete free to call, we only do so if |
| // there is an outstanding snapshot, since w/o that, there will be no copy-on-write |
| // and therefore we don't care which mode we're in. |
| // |
| if (fSurfaceBase->outstandingImageSnapshot()) { |
| if (this->wouldOverwriteEntireSurface(rect, paint, overrideOpacity)) { |
| mode = SkSurface::kDiscard_ContentChangeMode; |
| } |
| } |
| fSurfaceBase->aboutToDraw(mode); |
| } |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| /* This is the record we keep for each SkBaseDevice that the user installs. |
| The clip/matrix/proc are fields that reflect the top of the save/restore |
| stack. Whenever the canvas changes, it marks a dirty flag, and then before |
| these are used (assuming we're not on a layer) we rebuild these cache |
| values: they reflect the top of the save stack, but translated and clipped |
| by the device's XY offset and bitmap-bounds. |
| */ |
| struct DeviceCM { |
| DeviceCM* fNext; |
| sk_sp<SkBaseDevice> fDevice; |
| SkRasterClip fClip; |
| std::unique_ptr<const SkPaint> fPaint; // may be null (in the future) |
| SkMatrix fStashedMatrix; // original CTM; used by imagefilter in saveLayer |
| sk_sp<SkImage> fClipImage; |
| SkMatrix fClipMatrix; |
| |
| DeviceCM(sk_sp<SkBaseDevice> device, const SkPaint* paint, const SkMatrix& stashed, |
| const SkImage* clipImage, const SkMatrix* clipMatrix) |
| : fNext(nullptr) |
| , fDevice(std::move(device)) |
| , fPaint(paint ? skstd::make_unique<SkPaint>(*paint) : nullptr) |
| , fStashedMatrix(stashed) |
| , fClipImage(sk_ref_sp(const_cast<SkImage*>(clipImage))) |
| , fClipMatrix(clipMatrix ? *clipMatrix : SkMatrix::I()) |
| {} |
| |
| void reset(const SkIRect& bounds) { |
| SkASSERT(!fPaint); |
| SkASSERT(!fNext); |
| SkASSERT(fDevice); |
| fClip.setRect(bounds); |
| } |
| }; |
| |
| namespace { |
| // Encapsulate state needed to restore from saveBehind() |
| struct BackImage { |
| sk_sp<SkSpecialImage> fImage; |
| SkIPoint fLoc; |
| }; |
| } |
| |
| /* This is the record we keep for each save/restore level in the stack. |
| Since a level optionally copies the matrix and/or stack, we have pointers |
| for these fields. If the value is copied for this level, the copy is |
| stored in the ...Storage field, and the pointer points to that. If the |
| value is not copied for this level, we ignore ...Storage, and just point |
| at the corresponding value in the previous level in the stack. |
| */ |
| class SkCanvas::MCRec { |
| public: |
| DeviceCM* fLayer; |
| /* If there are any layers in the stack, this points to the top-most |
| one that is at or below this level in the stack (so we know what |
| bitmap/device to draw into from this level. This value is NOT |
| reference counted, since the real owner is either our fLayer field, |
| or a previous one in a lower level.) |
| */ |
| DeviceCM* fTopLayer; |
| std::unique_ptr<BackImage> fBackImage; |
| SkConservativeClip fRasterClip; |
| SkMatrix fMatrix; |
| int fDeferredSaveCount; |
| |
| MCRec() { |
| fLayer = nullptr; |
| fTopLayer = nullptr; |
| fMatrix.reset(); |
| fDeferredSaveCount = 0; |
| |
| // don't bother initializing fNext |
| inc_rec(); |
| } |
| MCRec(const MCRec& prev) : fRasterClip(prev.fRasterClip), fMatrix(prev.fMatrix) { |
| fLayer = nullptr; |
| fTopLayer = prev.fTopLayer; |
| fDeferredSaveCount = 0; |
| |
| // don't bother initializing fNext |
| inc_rec(); |
| } |
| ~MCRec() { |
| delete fLayer; |
| dec_rec(); |
| } |
| |
| void reset(const SkIRect& bounds) { |
| SkASSERT(fLayer); |
| SkASSERT(fDeferredSaveCount == 0); |
| |
| fMatrix.reset(); |
| fRasterClip.setRect(bounds); |
| fLayer->reset(bounds); |
| } |
| }; |
| |
| class SkDrawIter { |
| public: |
| SkDrawIter(SkCanvas* canvas) |
| : fDevice(nullptr), fCurrLayer(canvas->fMCRec->fTopLayer), fPaint(nullptr) |
| {} |
| |
| bool next() { |
| const DeviceCM* rec = fCurrLayer; |
| if (rec && rec->fDevice) { |
| fDevice = rec->fDevice.get(); |
| fPaint = rec->fPaint.get(); |
| fCurrLayer = rec->fNext; |
| // fCurrLayer may be nullptr now |
| return true; |
| } |
| return false; |
| } |
| |
| int getX() const { return fDevice->getOrigin().x(); } |
| int getY() const { return fDevice->getOrigin().y(); } |
| const SkPaint* getPaint() const { return fPaint; } |
| |
| SkBaseDevice* fDevice; |
| |
| private: |
| const DeviceCM* fCurrLayer; |
| const SkPaint* fPaint; // May be null. |
| }; |
| |
| #define FOR_EACH_TOP_DEVICE( code ) \ |
| do { \ |
| DeviceCM* layer = fMCRec->fTopLayer; \ |
| while (layer) { \ |
| SkBaseDevice* device = layer->fDevice.get(); \ |
| if (device) { \ |
| code; \ |
| } \ |
| layer = layer->fNext; \ |
| } \ |
| } while (0) |
| |
| ///////////////////////////////////////////////////////////////////////////// |
| |
| static SkPaint* set_if_needed(SkLazyPaint* lazy, const SkPaint& orig) { |
| return lazy->isValid() ? lazy->get() : lazy->set(orig); |
| } |
| |
| /** |
| * If the paint has an imagefilter, but it can be simplified to just a colorfilter, return that |
| * colorfilter, else return nullptr. |
| */ |
| static sk_sp<SkColorFilter> image_to_color_filter(const SkPaint& paint) { |
| SkImageFilter* imgf = paint.getImageFilter(); |
| if (!imgf) { |
| return nullptr; |
| } |
| |
| SkColorFilter* imgCFPtr; |
| if (!imgf->asAColorFilter(&imgCFPtr)) { |
| return nullptr; |
| } |
| sk_sp<SkColorFilter> imgCF(imgCFPtr); |
| |
| SkColorFilter* paintCF = paint.getColorFilter(); |
| if (nullptr == paintCF) { |
| // there is no existing paint colorfilter, so we can just return the imagefilter's |
| return imgCF; |
| } |
| |
| // The paint has both a colorfilter(paintCF) and an imagefilter-which-is-a-colorfilter(imgCF) |
| // and we need to combine them into a single colorfilter. |
| return imgCF->makeComposed(sk_ref_sp(paintCF)); |
| } |
| |
| /** |
| * There are many bounds in skia. A circle's bounds is just its center extended by its radius. |
| * However, if we stroke a circle, then the "bounds" of that is larger, since it will now draw |
| * outside of its raw-bounds by 1/2 the stroke width. SkPaint has lots of optional |
| * effects/attributes that can modify the effective bounds of a given primitive -- maskfilters, |
| * patheffects, stroking, etc. This function takes a raw bounds and a paint, and returns the |
| * conservative "effective" bounds based on the settings in the paint... with one exception. This |
| * function does *not* look at the imagefilter, which can also modify the effective bounds. It is |
| * deliberately ignored. |
| */ |
| static const SkRect& apply_paint_to_bounds_sans_imagefilter(const SkPaint& paint, |
| const SkRect& rawBounds, |
| SkRect* storage) { |
| SkPaint tmpUnfiltered(paint); |
| tmpUnfiltered.setImageFilter(nullptr); |
| if (tmpUnfiltered.canComputeFastBounds()) { |
| return tmpUnfiltered.computeFastBounds(rawBounds, storage); |
| } else { |
| return rawBounds; |
| } |
| } |
| |
| class AutoDrawLooper { |
| public: |
| // "rawBounds" is the original bounds of the primitive about to be drawn, unmodified by the |
| // paint. It's used to determine the size of the offscreen layer for filters. |
| // If null, the clip will be used instead. |
| AutoDrawLooper(SkCanvas* canvas, const SkPaint& paint, bool skipLayerForImageFilter = false, |
| const SkRect* rawBounds = nullptr) : fOrigPaint(paint) { |
| fCanvas = canvas; |
| fPaint = &fOrigPaint; |
| fSaveCount = canvas->getSaveCount(); |
| fTempLayerForImageFilter = false; |
| fDone = false; |
| |
| auto simplifiedCF = image_to_color_filter(fOrigPaint); |
| if (simplifiedCF) { |
| SkPaint* paint = set_if_needed(&fLazyPaintInit, fOrigPaint); |
| paint->setColorFilter(std::move(simplifiedCF)); |
| paint->setImageFilter(nullptr); |
| fPaint = paint; |
| } |
| |
| if (!skipLayerForImageFilter && fPaint->getImageFilter()) { |
| /** |
| * We implement ImageFilters for a given draw by creating a layer, then applying the |
| * imagefilter to the pixels of that layer (its backing surface/image), and then |
| * we call restore() to xfer that layer to the main canvas. |
| * |
| * 1. SaveLayer (with a paint containing the current imagefilter and xfermode) |
| * 2. Generate the src pixels: |
| * Remove the imagefilter and the xfermode from the paint that we (AutoDrawLooper) |
| * return (fPaint). We then draw the primitive (using srcover) into a cleared |
| * buffer/surface. |
| * 3. Restore the layer created in #1 |
| * The imagefilter is passed the buffer/surface from the layer (now filled with the |
| * src pixels of the primitive). It returns a new "filtered" buffer, which we |
| * draw onto the previous layer using the xfermode from the original paint. |
| */ |
| SkPaint tmp; |
| tmp.setImageFilter(fPaint->refImageFilter()); |
| tmp.setBlendMode(fPaint->getBlendMode()); |
| SkRect storage; |
| if (rawBounds) { |
| // Make rawBounds include all paint outsets except for those due to image filters. |
| rawBounds = &apply_paint_to_bounds_sans_imagefilter(*fPaint, *rawBounds, &storage); |
| } |
| (void)canvas->internalSaveLayer(SkCanvas::SaveLayerRec(rawBounds, &tmp), |
| SkCanvas::kFullLayer_SaveLayerStrategy); |
| fTempLayerForImageFilter = true; |
| // we remove the imagefilter/xfermode inside doNext() |
| } |
| |
| if (SkDrawLooper* looper = paint.getLooper()) { |
| fLooperContext = looper->makeContext(canvas, &fAlloc); |
| fIsSimple = false; |
| } else { |
| fLooperContext = nullptr; |
| // can we be marked as simple? |
| fIsSimple = !fTempLayerForImageFilter; |
| } |
| } |
| |
| ~AutoDrawLooper() { |
| if (fTempLayerForImageFilter) { |
| fCanvas->internalRestore(); |
| } |
| SkASSERT(fCanvas->getSaveCount() == fSaveCount); |
| } |
| |
| const SkPaint& paint() const { |
| SkASSERT(fPaint); |
| SkASSERT(fPaint->getDrawLooper() == nullptr); // we should have cleared this |
| return *fPaint; |
| } |
| |
| bool next() { |
| if (fDone) { |
| return false; |
| } else if (fIsSimple) { |
| fDone = true; |
| return !fPaint->nothingToDraw(); |
| } else { |
| return this->doNext(); |
| } |
| } |
| |
| private: |
| SkLazyPaint fLazyPaintInit; // base paint storage in case we need to modify it |
| SkLazyPaint fLazyPaintPerLooper; // per-draw-looper storage, so the looper can modify it |
| SkCanvas* fCanvas; |
| const SkPaint& fOrigPaint; |
| const SkPaint* fPaint; |
| int fSaveCount; |
| bool fTempLayerForImageFilter; |
| bool fDone; |
| bool fIsSimple; |
| SkDrawLooper::Context* fLooperContext; |
| SkSTArenaAlloc<48> fAlloc; |
| |
| bool doNext(); |
| }; |
| |
| bool AutoDrawLooper::doNext() { |
| fPaint = nullptr; |
| SkASSERT(!fIsSimple); |
| SkASSERT(fLooperContext || fTempLayerForImageFilter); |
| |
| SkPaint* paint = fLazyPaintPerLooper.set(fLazyPaintInit.isValid() ? |
| *fLazyPaintInit.get() : fOrigPaint); |
| // never want our downstream clients (i.e. devices) to see loopers |
| paint->setDrawLooper(nullptr); |
| |
| if (fTempLayerForImageFilter) { |
| paint->setImageFilter(nullptr); |
| paint->setBlendMode(SkBlendMode::kSrcOver); |
| } |
| |
| if (fLooperContext && !fLooperContext->next(fCanvas, paint)) { |
| fDone = true; |
| return false; |
| } |
| fPaint = paint; |
| |
| // if we only came in here for the imagefilter, mark us as done |
| if (!fLooperContext) { |
| fDone = true; |
| } |
| return true; |
| } |
| |
| ////////// macros to place around the internal draw calls ////////////////// |
| |
| #define LOOPER_BEGIN_DRAWBITMAP(paint, skipLayerForFilter, bounds) \ |
| this->predrawNotify(); \ |
| AutoDrawLooper looper(this, paint, skipLayerForFilter, bounds); \ |
| while (looper.next()) { \ |
| SkDrawIter iter(this); |
| |
| |
| #define LOOPER_BEGIN_DRAWDEVICE(paint) \ |
| this->predrawNotify(); \ |
| AutoDrawLooper looper(this, paint, true); \ |
| while (looper.next()) { \ |
| SkDrawIter iter(this); |
| |
| #define LOOPER_BEGIN(paint, bounds) \ |
| this->predrawNotify(); \ |
| AutoDrawLooper looper(this, paint, false, bounds); \ |
| while (looper.next()) { \ |
| SkDrawIter iter(this); |
| |
| #define LOOPER_BEGIN_CHECK_COMPLETE_OVERWRITE(paint, bounds, auxOpaque) \ |
| this->predrawNotify(bounds, &paint, auxOpaque); \ |
| AutoDrawLooper looper(this, paint, false, bounds); \ |
| while (looper.next()) { \ |
| SkDrawIter iter(this); |
| |
| #define LOOPER_END } |
| |
| //////////////////////////////////////////////////////////////////////////// |
| |
| static inline SkRect qr_clip_bounds(const SkIRect& bounds) { |
| if (bounds.isEmpty()) { |
| return SkRect::MakeEmpty(); |
| } |
| |
| // Expand bounds out by 1 in case we are anti-aliasing. We store the |
| // bounds as floats to enable a faster quick reject implementation. |
| SkRect dst; |
| SkNx_cast<float>(Sk4i::Load(&bounds.fLeft) + Sk4i(-1,-1,1,1)).store(&dst.fLeft); |
| return dst; |
| } |
| |
| void SkCanvas::resetForNextPicture(const SkIRect& bounds) { |
| this->restoreToCount(1); |
| fMCRec->reset(bounds); |
| |
| // We're peering through a lot of structs here. Only at this scope do we |
| // know that the device is a SkNoPixelsDevice. |
| static_cast<SkNoPixelsDevice*>(fMCRec->fLayer->fDevice.get())->resetForNextPicture(bounds); |
| fDeviceClipBounds = qr_clip_bounds(bounds); |
| fIsScaleTranslate = true; |
| } |
| |
| void SkCanvas::init(sk_sp<SkBaseDevice> device) { |
| fAllowSimplifyClip = false; |
| fSaveCount = 1; |
| fMetaData = nullptr; |
| |
| fMCRec = (MCRec*)fMCStack.push_back(); |
| new (fMCRec) MCRec; |
| fMCRec->fRasterClip.setDeviceClipRestriction(&fClipRestrictionRect); |
| fIsScaleTranslate = true; |
| |
| SkASSERT(sizeof(DeviceCM) <= sizeof(fDeviceCMStorage)); |
| fMCRec->fLayer = (DeviceCM*)fDeviceCMStorage; |
| new (fDeviceCMStorage) DeviceCM(device, nullptr, fMCRec->fMatrix, nullptr, nullptr); |
| |
| fMCRec->fTopLayer = fMCRec->fLayer; |
| |
| fSurfaceBase = nullptr; |
| |
| if (device) { |
| // The root device and the canvas should always have the same pixel geometry |
| SkASSERT(fProps.pixelGeometry() == device->surfaceProps().pixelGeometry()); |
| fMCRec->fRasterClip.setRect(device->getGlobalBounds()); |
| fDeviceClipBounds = qr_clip_bounds(device->getGlobalBounds()); |
| |
| device->androidFramework_setDeviceClipRestriction(&fClipRestrictionRect); |
| } |
| |
| fScratchGlyphRunBuilder = skstd::make_unique<SkGlyphRunBuilder>(); |
| } |
| |
| SkCanvas::SkCanvas() |
| : fMCStack(sizeof(MCRec), fMCRecStorage, sizeof(fMCRecStorage)) |
| , fProps(SkSurfaceProps::kLegacyFontHost_InitType) |
| { |
| inc_canvas(); |
| |
| this->init(nullptr); |
| } |
| |
| SkCanvas::SkCanvas(int width, int height, const SkSurfaceProps* props) |
| : fMCStack(sizeof(MCRec), fMCRecStorage, sizeof(fMCRecStorage)) |
| , fProps(SkSurfacePropsCopyOrDefault(props)) |
| { |
| inc_canvas(); |
| this->init(sk_make_sp<SkNoPixelsDevice>( |
| SkIRect::MakeWH(SkTMax(width, 0), SkTMax(height, 0)), fProps)); |
| } |
| |
| SkCanvas::SkCanvas(const SkIRect& bounds) |
| : fMCStack(sizeof(MCRec), fMCRecStorage, sizeof(fMCRecStorage)) |
| , fProps(SkSurfaceProps::kLegacyFontHost_InitType) |
| { |
| inc_canvas(); |
| |
| SkIRect r = bounds.isEmpty() ? SkIRect::MakeEmpty() : bounds; |
| this->init(sk_make_sp<SkNoPixelsDevice>(r, fProps)); |
| } |
| |
| SkCanvas::SkCanvas(sk_sp<SkBaseDevice> device) |
| : fMCStack(sizeof(MCRec), fMCRecStorage, sizeof(fMCRecStorage)) |
| , fProps(device->surfaceProps()) |
| { |
| inc_canvas(); |
| |
| this->init(device); |
| } |
| |
| SkCanvas::SkCanvas(const SkBitmap& bitmap, const SkSurfaceProps& props) |
| : fMCStack(sizeof(MCRec), fMCRecStorage, sizeof(fMCRecStorage)) |
| , fProps(props) |
| { |
| inc_canvas(); |
| |
| sk_sp<SkBaseDevice> device(new SkBitmapDevice(bitmap, fProps, nullptr, nullptr)); |
| this->init(device); |
| } |
| |
| SkCanvas::SkCanvas(const SkBitmap& bitmap, std::unique_ptr<SkRasterHandleAllocator> alloc, |
| SkRasterHandleAllocator::Handle hndl) |
| : fMCStack(sizeof(MCRec), fMCRecStorage, sizeof(fMCRecStorage)) |
| , fProps(SkSurfaceProps::kLegacyFontHost_InitType) |
| , fAllocator(std::move(alloc)) |
| { |
| inc_canvas(); |
| |
| sk_sp<SkBaseDevice> device(new SkBitmapDevice(bitmap, fProps, hndl, nullptr)); |
| this->init(device); |
| } |
| |
| SkCanvas::SkCanvas(const SkBitmap& bitmap) : SkCanvas(bitmap, nullptr, nullptr) {} |
| |
| #ifdef SK_BUILD_FOR_ANDROID_FRAMEWORK |
| SkCanvas::SkCanvas(const SkBitmap& bitmap, ColorBehavior) |
| : fMCStack(sizeof(MCRec), fMCRecStorage, sizeof(fMCRecStorage)) |
| , fProps(SkSurfaceProps::kLegacyFontHost_InitType) |
| , fAllocator(nullptr) |
| { |
| inc_canvas(); |
| |
| SkBitmap tmp(bitmap); |
| *const_cast<SkImageInfo*>(&tmp.info()) = tmp.info().makeColorSpace(nullptr); |
| sk_sp<SkBaseDevice> device(new SkBitmapDevice(tmp, fProps, nullptr, nullptr)); |
| this->init(device); |
| } |
| #endif |
| |
| SkCanvas::~SkCanvas() { |
| // free up the contents of our deque |
| this->restoreToCount(1); // restore everything but the last |
| |
| this->internalRestore(); // restore the last, since we're going away |
| |
| delete fMetaData; |
| |
| dec_canvas(); |
| } |
| |
| SkMetaData& SkCanvas::getMetaData() { |
| // metadata users are rare, so we lazily allocate it. If that changes we |
| // can decide to just make it a field in the device (rather than a ptr) |
| if (nullptr == fMetaData) { |
| fMetaData = new SkMetaData; |
| } |
| return *fMetaData; |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| void SkCanvas::flush() { |
| this->onFlush(); |
| } |
| |
| void SkCanvas::onFlush() { |
| SkBaseDevice* device = this->getDevice(); |
| if (device) { |
| device->flush(); |
| } |
| } |
| |
| SkISize SkCanvas::getBaseLayerSize() const { |
| SkBaseDevice* d = this->getDevice(); |
| return d ? SkISize::Make(d->width(), d->height()) : SkISize::Make(0, 0); |
| } |
| |
| SkIRect SkCanvas::getTopLayerBounds() const { |
| SkBaseDevice* d = this->getTopDevice(); |
| if (!d) { |
| return SkIRect::MakeEmpty(); |
| } |
| return SkIRect::MakeXYWH(d->getOrigin().x(), d->getOrigin().y(), d->width(), d->height()); |
| } |
| |
| SkBaseDevice* SkCanvas::getDevice() const { |
| // return root device |
| MCRec* rec = (MCRec*) fMCStack.front(); |
| SkASSERT(rec && rec->fLayer); |
| return rec->fLayer->fDevice.get(); |
| } |
| |
| SkBaseDevice* SkCanvas::getTopDevice() const { |
| return fMCRec->fTopLayer->fDevice.get(); |
| } |
| |
| bool SkCanvas::readPixels(const SkPixmap& pm, int x, int y) { |
| SkBaseDevice* device = this->getDevice(); |
| return device && pm.addr() && device->readPixels(pm, x, y); |
| } |
| |
| bool SkCanvas::readPixels(const SkImageInfo& dstInfo, void* dstP, size_t rowBytes, int x, int y) { |
| return this->readPixels({ dstInfo, dstP, rowBytes}, x, y); |
| } |
| |
| bool SkCanvas::readPixels(const SkBitmap& bm, int x, int y) { |
| SkPixmap pm; |
| return bm.peekPixels(&pm) && this->readPixels(pm, x, y); |
| } |
| |
| bool SkCanvas::writePixels(const SkBitmap& bitmap, int x, int y) { |
| SkPixmap pm; |
| if (bitmap.peekPixels(&pm)) { |
| return this->writePixels(pm.info(), pm.addr(), pm.rowBytes(), x, y); |
| } |
| return false; |
| } |
| |
| bool SkCanvas::writePixels(const SkImageInfo& srcInfo, const void* pixels, size_t rowBytes, |
| int x, int y) { |
| SkBaseDevice* device = this->getDevice(); |
| if (!device) { |
| return false; |
| } |
| |
| // This check gives us an early out and prevents generation ID churn on the surface. |
| // This is purely optional: it is a subset of the checks performed by SkWritePixelsRec. |
| SkIRect srcRect = SkIRect::MakeXYWH(x, y, srcInfo.width(), srcInfo.height()); |
| if (!srcRect.intersect(0, 0, device->width(), device->height())) { |
| return false; |
| } |
| |
| // Tell our owning surface to bump its generation ID. |
| const bool completeOverwrite = |
| srcRect.size() == SkISize::Make(device->width(), device->height()); |
| this->predrawNotify(completeOverwrite); |
| |
| // This can still fail, most notably in the case of a invalid color type or alpha type |
| // conversion. We could pull those checks into this function and avoid the unnecessary |
| // generation ID bump. But then we would be performing those checks twice, since they |
| // are also necessary at the bitmap/pixmap entry points. |
| return device->writePixels({srcInfo, pixels, rowBytes}, x, y); |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| void SkCanvas::checkForDeferredSave() { |
| if (fMCRec->fDeferredSaveCount > 0) { |
| this->doSave(); |
| } |
| } |
| |
| int SkCanvas::getSaveCount() const { |
| #ifdef SK_DEBUG |
| int count = 0; |
| SkDeque::Iter iter(fMCStack, SkDeque::Iter::kFront_IterStart); |
| for (;;) { |
| const MCRec* rec = (const MCRec*)iter.next(); |
| if (!rec) { |
| break; |
| } |
| count += 1 + rec->fDeferredSaveCount; |
| } |
| SkASSERT(count == fSaveCount); |
| #endif |
| return fSaveCount; |
| } |
| |
| int SkCanvas::save() { |
| fSaveCount += 1; |
| fMCRec->fDeferredSaveCount += 1; |
| return this->getSaveCount() - 1; // return our prev value |
| } |
| |
| void SkCanvas::doSave() { |
| this->willSave(); |
| |
| SkASSERT(fMCRec->fDeferredSaveCount > 0); |
| fMCRec->fDeferredSaveCount -= 1; |
| this->internalSave(); |
| } |
| |
| void SkCanvas::restore() { |
| if (fMCRec->fDeferredSaveCount > 0) { |
| SkASSERT(fSaveCount > 1); |
| fSaveCount -= 1; |
| fMCRec->fDeferredSaveCount -= 1; |
| } else { |
| // check for underflow |
| if (fMCStack.count() > 1) { |
| this->willRestore(); |
| SkASSERT(fSaveCount > 1); |
| fSaveCount -= 1; |
| this->internalRestore(); |
| this->didRestore(); |
| } |
| } |
| } |
| |
| void SkCanvas::restoreToCount(int count) { |
| // sanity check |
| if (count < 1) { |
| count = 1; |
| } |
| |
| int n = this->getSaveCount() - count; |
| for (int i = 0; i < n; ++i) { |
| this->restore(); |
| } |
| } |
| |
| void SkCanvas::internalSave() { |
| MCRec* newTop = (MCRec*)fMCStack.push_back(); |
| new (newTop) MCRec(*fMCRec); // balanced in restore() |
| fMCRec = newTop; |
| |
| FOR_EACH_TOP_DEVICE(device->save()); |
| } |
| |
| bool SkCanvas::BoundsAffectsClip(SaveLayerFlags saveLayerFlags) { |
| return !(saveLayerFlags & SkCanvasPriv::kDontClipToLayer_SaveLayerFlag); |
| } |
| |
| bool SkCanvas::clipRectBounds(const SkRect* bounds, SaveLayerFlags saveLayerFlags, |
| SkIRect* intersection, const SkImageFilter* imageFilter) { |
| SkIRect clipBounds = this->getDeviceClipBounds(); |
| if (clipBounds.isEmpty()) { |
| return false; |
| } |
| |
| const SkMatrix& ctm = fMCRec->fMatrix; // this->getTotalMatrix() |
| |
| if (imageFilter && bounds && !imageFilter->canComputeFastBounds()) { |
| // If the image filter DAG affects transparent black then we will need to render |
| // out to the clip bounds |
| bounds = nullptr; |
| } |
| |
| SkIRect inputSaveLayerBounds; |
| if (bounds) { |
| SkRect r; |
| ctm.mapRect(&r, *bounds); |
| r.roundOut(&inputSaveLayerBounds); |
| } else { // no user bounds, so just use the clip |
| inputSaveLayerBounds = clipBounds; |
| } |
| |
| if (imageFilter) { |
| // expand the clip bounds by the image filter DAG to include extra content that might |
| // be required by the image filters. |
| clipBounds = imageFilter->filterBounds(clipBounds, ctm, |
| SkImageFilter::kReverse_MapDirection, |
| &inputSaveLayerBounds); |
| } |
| |
| SkIRect clippedSaveLayerBounds; |
| if (bounds) { |
| // For better or for worse, user bounds currently act as a hard clip on the layer's |
| // extent (i.e., they implement the CSS filter-effects 'filter region' feature). |
| clippedSaveLayerBounds = inputSaveLayerBounds; |
| } else { |
| // If there are no user bounds, we don't want to artificially restrict the resulting |
| // layer bounds, so allow the expanded clip bounds free reign. |
| clippedSaveLayerBounds = clipBounds; |
| } |
| |
| // early exit if the layer's bounds are clipped out |
| if (!clippedSaveLayerBounds.intersect(clipBounds)) { |
| if (BoundsAffectsClip(saveLayerFlags)) { |
| fMCRec->fTopLayer->fDevice->clipRegion(SkRegion(), SkClipOp::kIntersect); // empty |
| fMCRec->fRasterClip.setEmpty(); |
| fDeviceClipBounds.setEmpty(); |
| } |
| return false; |
| } |
| SkASSERT(!clippedSaveLayerBounds.isEmpty()); |
| |
| if (BoundsAffectsClip(saveLayerFlags)) { |
| // Simplify the current clips since they will be applied properly during restore() |
| fMCRec->fRasterClip.setRect(clippedSaveLayerBounds); |
| fDeviceClipBounds = qr_clip_bounds(clippedSaveLayerBounds); |
| } |
| |
| if (intersection) { |
| *intersection = clippedSaveLayerBounds; |
| } |
| |
| return true; |
| } |
| |
| int SkCanvas::saveLayer(const SkRect* bounds, const SkPaint* paint) { |
| return this->saveLayer(SaveLayerRec(bounds, paint, 0)); |
| } |
| |
| int SkCanvas::saveLayer(const SaveLayerRec& rec) { |
| TRACE_EVENT0("skia", TRACE_FUNC); |
| if (rec.fPaint && rec.fPaint->nothingToDraw()) { |
| // no need for the layer (or any of the draws until the matching restore() |
| this->save(); |
| this->clipRect({0,0,0,0}); |
| } else { |
| SaveLayerStrategy strategy = this->getSaveLayerStrategy(rec); |
| fSaveCount += 1; |
| this->internalSaveLayer(rec, strategy); |
| } |
| return this->getSaveCount() - 1; |
| } |
| |
| int SkCanvas::only_axis_aligned_saveBehind(const SkRect* bounds) { |
| if (bounds && !this->getLocalClipBounds().intersects(*bounds)) { |
| // Assuming clips never expand, if the request bounds is outside of the current clip |
| // there is no need to copy/restore the area, so just devolve back to a regular save. |
| this->save(); |
| } else { |
| bool doTheWork = this->onDoSaveBehind(bounds); |
| fSaveCount += 1; |
| this->internalSave(); |
| if (doTheWork) { |
| this->internalSaveBehind(bounds); |
| } |
| } |
| return this->getSaveCount() - 1; |
| } |
| |
| void SkCanvas::DrawDeviceWithFilter(SkBaseDevice* src, const SkImageFilter* filter, |
| SkBaseDevice* dst, const SkIPoint& dstOrigin, |
| const SkMatrix& ctm) { |
| SkDraw draw; |
| SkRasterClip rc; |
| rc.setRect(SkIRect::MakeWH(dst->width(), dst->height())); |
| if (!dst->accessPixels(&draw.fDst)) { |
| draw.fDst.reset(dst->imageInfo(), nullptr, 0); |
| } |
| draw.fMatrix = &SkMatrix::I(); |
| draw.fRC = &rc; |
| |
| SkPaint p; |
| if (filter) { |
| p.setImageFilter(filter->makeWithLocalMatrix(ctm)); |
| } |
| |
| int x = src->getOrigin().x() - dstOrigin.x(); |
| int y = src->getOrigin().y() - dstOrigin.y(); |
| auto special = src->snapSpecial(); |
| if (special) { |
| dst->drawSpecial(special.get(), x, y, p, nullptr, SkMatrix::I()); |
| } |
| } |
| |
| static SkImageInfo make_layer_info(const SkImageInfo& prev, int w, int h, const SkPaint* paint) { |
| // Need to force L32 for now if we have an image filter. |
| // If filters ever support other colortypes, e.g. sRGB or F16, we can remove this check. |
| if (paint && paint->getImageFilter()) { |
| return SkImageInfo::MakeN32Premul(w, h); |
| } |
| |
| SkColorType ct = prev.colorType(); |
| if (prev.bytesPerPixel() <= 4) { |
| // "Upgrade" A8, G8, 565, 4444, 1010102, 101010x, and 888x to 8888, |
| // ensuring plenty of alpha bits for the layer, perhaps losing some color bits in return. |
| ct = kN32_SkColorType; |
| } |
| return SkImageInfo::Make(w, h, ct, kPremul_SkAlphaType, prev.refColorSpace()); |
| } |
| |
| void SkCanvas::internalSaveLayer(const SaveLayerRec& rec, SaveLayerStrategy strategy) { |
| TRACE_EVENT0("skia", TRACE_FUNC); |
| const SkRect* bounds = rec.fBounds; |
| const SkPaint* paint = rec.fPaint; |
| SaveLayerFlags saveLayerFlags = rec.fSaveLayerFlags; |
| |
| SkLazyPaint lazyP; |
| SkImageFilter* imageFilter = paint ? paint->getImageFilter() : nullptr; |
| SkMatrix stashedMatrix = fMCRec->fMatrix; |
| MCRec* modifiedRec = nullptr; |
| SkMatrix remainder; |
| SkSize scale; |
| /* |
| * ImageFilters (so far) do not correctly handle matrices (CTM) that contain rotation/skew/etc. |
| * but they do handle scaling. To accommodate this, we do the following: |
| * |
| * 1. Stash off the current CTM |
| * 2. Decompose the CTM into SCALE and REMAINDER |
| * 3. Wack the CTM to be just SCALE, and wrap the imagefilter with a MatrixImageFilter that |
| * contains the REMAINDER |
| * 4. Proceed as usual, allowing the client to draw into the layer (now with a scale-only CTM) |
| * 5. During restore, we process the MatrixImageFilter, which applies REMAINDER to the output |
| * of the original imagefilter, and draw that (via drawSprite) |
| * 6. Unwack the CTM to its original state (i.e. stashedMatrix) |
| * |
| * Perhaps in the future we could augment #5 to apply REMAINDER as part of the draw (no longer |
| * a sprite operation) to avoid the extra buffer/overhead of MatrixImageFilter. |
| */ |
| if (imageFilter && !stashedMatrix.isScaleTranslate() && !imageFilter->canHandleComplexCTM() && |
| stashedMatrix.decomposeScale(&scale, &remainder)) |
| { |
| // We will restore the matrix (which we are overwriting here) in restore via fStashedMatrix |
| modifiedRec = fMCRec; |
| this->internalSetMatrix(SkMatrix::MakeScale(scale.width(), scale.height())); |
| SkPaint* p = lazyP.set(*paint); |
| p->setImageFilter(SkImageFilter::MakeMatrixFilter(remainder, |
| SkFilterQuality::kLow_SkFilterQuality, |
| sk_ref_sp(imageFilter))); |
| imageFilter = p->getImageFilter(); |
| paint = p; |
| } |
| |
| // do this before we create the layer. We don't call the public save() since |
| // that would invoke a possibly overridden virtual |
| this->internalSave(); |
| |
| SkIRect ir; |
| if (!this->clipRectBounds(bounds, saveLayerFlags, &ir, imageFilter)) { |
| if (modifiedRec) { |
| // In this case there will be no layer in which to stash the matrix so we need to |
| // revert the prior MCRec to its earlier state. |
| modifiedRec->fMatrix = stashedMatrix; |
| } |
| return; |
| } |
| |
| // FIXME: do willSaveLayer() overriders returning kNoLayer_SaveLayerStrategy really care about |
| // the clipRectBounds() call above? |
| if (kNoLayer_SaveLayerStrategy == strategy) { |
| return; |
| } |
| |
| SkPixelGeometry geo = fProps.pixelGeometry(); |
| if (paint) { |
| // TODO: perhaps add a query to filters so we might preserve opaqueness... |
| if (paint->getImageFilter() || paint->getColorFilter()) { |
| geo = kUnknown_SkPixelGeometry; |
| } |
| } |
| |
| SkBaseDevice* priorDevice = this->getTopDevice(); |
| if (nullptr == priorDevice) { // Do we still need this check??? |
| SkDebugf("Unable to find device for layer."); |
| return; |
| } |
| |
| SkImageInfo info = make_layer_info(priorDevice->imageInfo(), ir.width(), ir.height(), paint); |
| |
| sk_sp<SkBaseDevice> newDevice; |
| { |
| const bool preserveLCDText = kOpaque_SkAlphaType == info.alphaType(); |
| const SkBaseDevice::TileUsage usage = SkBaseDevice::kNever_TileUsage; |
| const bool trackCoverage = |
| SkToBool(saveLayerFlags & kMaskAgainstCoverage_EXPERIMENTAL_DONT_USE_SaveLayerFlag); |
| const SkBaseDevice::CreateInfo createInfo = SkBaseDevice::CreateInfo(info, usage, geo, |
| preserveLCDText, |
| trackCoverage, |
| fAllocator.get()); |
| newDevice.reset(priorDevice->onCreateDevice(createInfo, paint)); |
| if (!newDevice) { |
| return; |
| } |
| } |
| DeviceCM* layer = new DeviceCM(newDevice, paint, stashedMatrix, rec.fClipMask, rec.fClipMatrix); |
| |
| // only have a "next" if this new layer doesn't affect the clip (rare) |
| layer->fNext = BoundsAffectsClip(saveLayerFlags) ? nullptr : fMCRec->fTopLayer; |
| fMCRec->fLayer = layer; |
| fMCRec->fTopLayer = layer; // this field is NOT an owner of layer |
| |
| if ((rec.fSaveLayerFlags & kInitWithPrevious_SaveLayerFlag) || rec.fBackdrop) { |
| DrawDeviceWithFilter(priorDevice, rec.fBackdrop, newDevice.get(), { ir.fLeft, ir.fTop }, |
| fMCRec->fMatrix); |
| } |
| |
| newDevice->setOrigin(fMCRec->fMatrix, ir.fLeft, ir.fTop); |
| |
| newDevice->androidFramework_setDeviceClipRestriction(&fClipRestrictionRect); |
| if (layer->fNext) { |
| // need to punch a hole in the previous device, so we don't draw there, given that |
| // the new top-layer will allow drawing to happen "below" it. |
| SkRegion hole(ir); |
| do { |
| layer = layer->fNext; |
| layer->fDevice->clipRegion(hole, SkClipOp::kDifference); |
| } while (layer->fNext); |
| } |
| } |
| |
| int SkCanvas::saveLayerAlpha(const SkRect* bounds, U8CPU alpha) { |
| if (0xFF == alpha) { |
| return this->saveLayer(bounds, nullptr); |
| } else { |
| SkPaint tmpPaint; |
| tmpPaint.setAlpha(alpha); |
| return this->saveLayer(bounds, &tmpPaint); |
| } |
| } |
| |
| void SkCanvas::internalSaveBehind(const SkRect* localBounds) { |
| SkIRect devBounds; |
| if (localBounds) { |
| SkRect tmp; |
| fMCRec->fMatrix.mapRect(&tmp, *localBounds); |
| if (!devBounds.intersect(tmp.round(), this->getDeviceClipBounds())) { |
| devBounds.setEmpty(); |
| } |
| } else { |
| devBounds = this->getDeviceClipBounds(); |
| } |
| if (devBounds.isEmpty()) { |
| return; |
| } |
| |
| SkBaseDevice* device = this->getTopDevice(); |
| if (nullptr == device) { // Do we still need this check??? |
| return; |
| } |
| |
| // need the bounds relative to the device itself |
| devBounds.offset(-device->fOrigin.fX, -device->fOrigin.fY); |
| |
| auto backImage = device->snapBackImage(devBounds); |
| if (!backImage) { |
| return; |
| } |
| |
| // we really need the save, so we can wack the fMCRec |
| this->checkForDeferredSave(); |
| |
| fMCRec->fBackImage.reset(new BackImage{std::move(backImage), devBounds.topLeft()}); |
| |
| SkPaint paint; |
| paint.setBlendMode(SkBlendMode::kClear); |
| if (localBounds) { |
| this->drawRect(*localBounds, paint); |
| } else { |
| this->drawPaint(paint); |
| } |
| } |
| |
| void SkCanvas::internalRestore() { |
| SkASSERT(fMCStack.count() != 0); |
| |
| // reserve our layer (if any) |
| DeviceCM* layer = fMCRec->fLayer; // may be null |
| // now detach it from fMCRec so we can pop(). Gets freed after its drawn |
| fMCRec->fLayer = nullptr; |
| |
| // move this out before we do the actual restore |
| auto backImage = std::move(fMCRec->fBackImage); |
| |
| // now do the normal restore() |
| fMCRec->~MCRec(); // balanced in save() |
| fMCStack.pop_back(); |
| fMCRec = (MCRec*)fMCStack.back(); |
| |
| if (fMCRec) { |
| FOR_EACH_TOP_DEVICE(device->restore(fMCRec->fMatrix)); |
| } |
| |
| if (backImage) { |
| SkPaint paint; |
| paint.setBlendMode(SkBlendMode::kDstOver); |
| const int x = backImage->fLoc.x(); |
| const int y = backImage->fLoc.y(); |
| this->getTopDevice()->drawSpecial(backImage->fImage.get(), x, y, paint, |
| nullptr, SkMatrix::I()); |
| } |
| |
| /* Time to draw the layer's offscreen. We can't call the public drawSprite, |
| since if we're being recorded, we don't want to record this (the |
| recorder will have already recorded the restore). |
| */ |
| if (layer) { |
| if (fMCRec) { |
| const SkIPoint& origin = layer->fDevice->getOrigin(); |
| layer->fDevice->setImmutable(); |
| this->internalDrawDevice(layer->fDevice.get(), origin.x(), origin.y(), |
| layer->fPaint.get(), |
| layer->fClipImage.get(), layer->fClipMatrix); |
| // restore what we smashed in internalSaveLayer |
| this->internalSetMatrix(layer->fStashedMatrix); |
| // reset this, since internalDrawDevice will have set it to true |
| delete layer; |
| } else { |
| // we're at the root |
| SkASSERT(layer == (void*)fDeviceCMStorage); |
| layer->~DeviceCM(); |
| // no need to update fMCRec, 'cause we're killing the canvas |
| } |
| } |
| |
| if (fMCRec) { |
| fIsScaleTranslate = fMCRec->fMatrix.isScaleTranslate(); |
| fDeviceClipBounds = qr_clip_bounds(fMCRec->fRasterClip.getBounds()); |
| } |
| } |
| |
| sk_sp<SkSurface> SkCanvas::makeSurface(const SkImageInfo& info, const SkSurfaceProps* props) { |
| if (nullptr == props) { |
| props = &fProps; |
| } |
| return this->onNewSurface(info, *props); |
| } |
| |
| sk_sp<SkSurface> SkCanvas::onNewSurface(const SkImageInfo& info, const SkSurfaceProps& props) { |
| SkBaseDevice* dev = this->getDevice(); |
| return dev ? dev->makeSurface(info, props) : nullptr; |
| } |
| |
| SkImageInfo SkCanvas::imageInfo() const { |
| return this->onImageInfo(); |
| } |
| |
| SkImageInfo SkCanvas::onImageInfo() const { |
| SkBaseDevice* dev = this->getDevice(); |
| if (dev) { |
| return dev->imageInfo(); |
| } else { |
| return SkImageInfo::MakeUnknown(0, 0); |
| } |
| } |
| |
| bool SkCanvas::getProps(SkSurfaceProps* props) const { |
| return this->onGetProps(props); |
| } |
| |
| bool SkCanvas::onGetProps(SkSurfaceProps* props) const { |
| SkBaseDevice* dev = this->getDevice(); |
| if (dev) { |
| if (props) { |
| *props = fProps; |
| } |
| return true; |
| } else { |
| return false; |
| } |
| } |
| |
| bool SkCanvas::peekPixels(SkPixmap* pmap) { |
| return this->onPeekPixels(pmap); |
| } |
| |
| bool SkCanvas::onPeekPixels(SkPixmap* pmap) { |
| SkBaseDevice* dev = this->getDevice(); |
| return dev && dev->peekPixels(pmap); |
| } |
| |
| void* SkCanvas::accessTopLayerPixels(SkImageInfo* info, size_t* rowBytes, SkIPoint* origin) { |
| SkPixmap pmap; |
| if (!this->onAccessTopLayerPixels(&pmap)) { |
| return nullptr; |
| } |
| if (info) { |
| *info = pmap.info(); |
| } |
| if (rowBytes) { |
| *rowBytes = pmap.rowBytes(); |
| } |
| if (origin) { |
| *origin = this->getTopDevice()->getOrigin(); |
| } |
| return pmap.writable_addr(); |
| } |
| |
| bool SkCanvas::onAccessTopLayerPixels(SkPixmap* pmap) { |
| SkBaseDevice* dev = this->getTopDevice(); |
| return dev && dev->accessPixels(pmap); |
| } |
| |
| ///////////////////////////////////////////////////////////////////////////// |
| |
| void SkCanvas::internalDrawDevice(SkBaseDevice* srcDev, int x, int y, const SkPaint* paint, |
| SkImage* clipImage, const SkMatrix& clipMatrix) { |
| SkPaint tmp; |
| if (nullptr == paint) { |
| paint = &tmp; |
| } |
| |
| LOOPER_BEGIN_DRAWDEVICE(*paint) |
| |
| while (iter.next()) { |
| SkBaseDevice* dstDev = iter.fDevice; |
| paint = &looper.paint(); |
| SkImageFilter* filter = paint->getImageFilter(); |
| SkIPoint pos = { x - iter.getX(), y - iter.getY() }; |
| if (filter || clipImage) { |
| sk_sp<SkSpecialImage> specialImage = srcDev->snapSpecial(); |
| if (specialImage) { |
| dstDev->drawSpecial(specialImage.get(), pos.x(), pos.y(), *paint, |
| clipImage, clipMatrix); |
| } |
| } else { |
| dstDev->drawDevice(srcDev, pos.x(), pos.y(), *paint); |
| } |
| } |
| |
| LOOPER_END |
| } |
| |
| ///////////////////////////////////////////////////////////////////////////// |
| |
| void SkCanvas::translate(SkScalar dx, SkScalar dy) { |
| if (dx || dy) { |
| this->checkForDeferredSave(); |
| fMCRec->fMatrix.preTranslate(dx,dy); |
| |
| // Translate shouldn't affect the is-scale-translateness of the matrix. |
| SkASSERT(fIsScaleTranslate == fMCRec->fMatrix.isScaleTranslate()); |
| |
| FOR_EACH_TOP_DEVICE(device->setGlobalCTM(fMCRec->fMatrix)); |
| |
| this->didTranslate(dx,dy); |
| } |
| } |
| |
| void SkCanvas::scale(SkScalar sx, SkScalar sy) { |
| SkMatrix m; |
| m.setScale(sx, sy); |
| this->concat(m); |
| } |
| |
| void SkCanvas::rotate(SkScalar degrees) { |
| SkMatrix m; |
| m.setRotate(degrees); |
| this->concat(m); |
| } |
| |
| void SkCanvas::rotate(SkScalar degrees, SkScalar px, SkScalar py) { |
| SkMatrix m; |
| m.setRotate(degrees, px, py); |
| this->concat(m); |
| } |
| |
| void SkCanvas::skew(SkScalar sx, SkScalar sy) { |
| SkMatrix m; |
| m.setSkew(sx, sy); |
| this->concat(m); |
| } |
| |
| void SkCanvas::concat(const SkMatrix& matrix) { |
| if (matrix.isIdentity()) { |
| return; |
| } |
| |
| this->checkForDeferredSave(); |
| fMCRec->fMatrix.preConcat(matrix); |
| fIsScaleTranslate = fMCRec->fMatrix.isScaleTranslate(); |
| |
| FOR_EACH_TOP_DEVICE(device->setGlobalCTM(fMCRec->fMatrix)); |
| |
| this->didConcat(matrix); |
| } |
| |
| void SkCanvas::internalSetMatrix(const SkMatrix& matrix) { |
| fMCRec->fMatrix = matrix; |
| fIsScaleTranslate = matrix.isScaleTranslate(); |
| |
| FOR_EACH_TOP_DEVICE(device->setGlobalCTM(fMCRec->fMatrix)); |
| } |
| |
| void SkCanvas::setMatrix(const SkMatrix& matrix) { |
| this->checkForDeferredSave(); |
| this->internalSetMatrix(matrix); |
| this->didSetMatrix(matrix); |
| } |
| |
| void SkCanvas::resetMatrix() { |
| this->setMatrix(SkMatrix::I()); |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| void SkCanvas::clipRect(const SkRect& rect, SkClipOp op, bool doAA) { |
| if (!rect.isFinite()) { |
| return; |
| } |
| this->checkForDeferredSave(); |
| ClipEdgeStyle edgeStyle = doAA ? kSoft_ClipEdgeStyle : kHard_ClipEdgeStyle; |
| this->onClipRect(rect, op, edgeStyle); |
| } |
| |
| void SkCanvas::onClipRect(const SkRect& rect, SkClipOp op, ClipEdgeStyle edgeStyle) { |
| const bool isAA = kSoft_ClipEdgeStyle == edgeStyle; |
| |
| FOR_EACH_TOP_DEVICE(device->clipRect(rect, op, isAA)); |
| |
| AutoValidateClip avc(this); |
| fMCRec->fRasterClip.opRect(rect, fMCRec->fMatrix, this->getTopLayerBounds(), (SkRegion::Op)op, |
| isAA); |
| fDeviceClipBounds = qr_clip_bounds(fMCRec->fRasterClip.getBounds()); |
| } |
| |
| void SkCanvas::androidFramework_setDeviceClipRestriction(const SkIRect& rect) { |
| fClipRestrictionRect = rect; |
| if (fClipRestrictionRect.isEmpty()) { |
| // we notify the device, but we *dont* resolve deferred saves (since we're just |
| // removing the restriction if the rect is empty. how I hate this api. |
| FOR_EACH_TOP_DEVICE(device->androidFramework_setDeviceClipRestriction(&fClipRestrictionRect)); |
| } else { |
| this->checkForDeferredSave(); |
| FOR_EACH_TOP_DEVICE(device->androidFramework_setDeviceClipRestriction(&fClipRestrictionRect)); |
| AutoValidateClip avc(this); |
| fMCRec->fRasterClip.opIRect(fClipRestrictionRect, SkRegion::kIntersect_Op); |
| fDeviceClipBounds = qr_clip_bounds(fMCRec->fRasterClip.getBounds()); |
| } |
| } |
| |
| void SkCanvas::clipRRect(const SkRRect& rrect, SkClipOp op, bool doAA) { |
| this->checkForDeferredSave(); |
| ClipEdgeStyle edgeStyle = doAA ? kSoft_ClipEdgeStyle : kHard_ClipEdgeStyle; |
| if (rrect.isRect()) { |
| this->onClipRect(rrect.getBounds(), op, edgeStyle); |
| } else { |
| this->onClipRRect(rrect, op, edgeStyle); |
| } |
| } |
| |
| void SkCanvas::onClipRRect(const SkRRect& rrect, SkClipOp op, ClipEdgeStyle edgeStyle) { |
| AutoValidateClip avc(this); |
| |
| bool isAA = kSoft_ClipEdgeStyle == edgeStyle; |
| |
| FOR_EACH_TOP_DEVICE(device->clipRRect(rrect, op, isAA)); |
| |
| fMCRec->fRasterClip.opRRect(rrect, fMCRec->fMatrix, this->getTopLayerBounds(), (SkRegion::Op)op, |
| isAA); |
| fDeviceClipBounds = qr_clip_bounds(fMCRec->fRasterClip.getBounds()); |
| } |
| |
| void SkCanvas::clipPath(const SkPath& path, SkClipOp op, bool doAA) { |
| this->checkForDeferredSave(); |
| ClipEdgeStyle edgeStyle = doAA ? kSoft_ClipEdgeStyle : kHard_ClipEdgeStyle; |
| |
| if (!path.isInverseFillType() && fMCRec->fMatrix.rectStaysRect()) { |
| SkRect r; |
| if (path.isRect(&r)) { |
| this->onClipRect(r, op, edgeStyle); |
| return; |
| } |
| SkRRect rrect; |
| if (path.isOval(&r)) { |
| rrect.setOval(r); |
| this->onClipRRect(rrect, op, edgeStyle); |
| return; |
| } |
| if (path.isRRect(&rrect)) { |
| this->onClipRRect(rrect, op, edgeStyle); |
| return; |
| } |
| } |
| |
| this->onClipPath(path, op, edgeStyle); |
| } |
| |
| void SkCanvas::onClipPath(const SkPath& path, SkClipOp op, ClipEdgeStyle edgeStyle) { |
| AutoValidateClip avc(this); |
| |
| bool isAA = kSoft_ClipEdgeStyle == edgeStyle; |
| |
| FOR_EACH_TOP_DEVICE(device->clipPath(path, op, isAA)); |
| |
| const SkPath* rasterClipPath = &path; |
| const SkMatrix* matrix = &fMCRec->fMatrix; |
| fMCRec->fRasterClip.opPath(*rasterClipPath, *matrix, this->getTopLayerBounds(), |
| (SkRegion::Op)op, isAA); |
| fDeviceClipBounds = qr_clip_bounds(fMCRec->fRasterClip.getBounds()); |
| } |
| |
| void SkCanvas::clipRegion(const SkRegion& rgn, SkClipOp op) { |
| this->checkForDeferredSave(); |
| this->onClipRegion(rgn, op); |
| } |
| |
| void SkCanvas::onClipRegion(const SkRegion& rgn, SkClipOp op) { |
| FOR_EACH_TOP_DEVICE(device->clipRegion(rgn, op)); |
| |
| AutoValidateClip avc(this); |
| |
| fMCRec->fRasterClip.opRegion(rgn, (SkRegion::Op)op); |
| fDeviceClipBounds = qr_clip_bounds(fMCRec->fRasterClip.getBounds()); |
| } |
| |
| #ifdef SK_DEBUG |
| void SkCanvas::validateClip() const { |
| // construct clipRgn from the clipstack |
| const SkBaseDevice* device = this->getDevice(); |
| if (!device) { |
| SkASSERT(this->isClipEmpty()); |
| return; |
| } |
| } |
| #endif |
| |
| bool SkCanvas::androidFramework_isClipAA() const { |
| bool containsAA = false; |
| |
| FOR_EACH_TOP_DEVICE(containsAA |= device->onClipIsAA()); |
| |
| return containsAA; |
| } |
| |
| class RgnAccumulator { |
| SkRegion* fRgn; |
| public: |
| RgnAccumulator(SkRegion* total) : fRgn(total) {} |
| void accumulate(SkBaseDevice* device, SkRegion* rgn) { |
| SkIPoint origin = device->getOrigin(); |
| if (origin.x() | origin.y()) { |
| rgn->translate(origin.x(), origin.y()); |
| } |
| fRgn->op(*rgn, SkRegion::kUnion_Op); |
| } |
| }; |
| |
| void SkCanvas::temporary_internal_getRgnClip(SkRegion* rgn) { |
| RgnAccumulator accum(rgn); |
| SkRegion tmp; |
| |
| rgn->setEmpty(); |
| FOR_EACH_TOP_DEVICE(device->onAsRgnClip(&tmp); accum.accumulate(device, &tmp)); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| bool SkCanvas::isClipEmpty() const { |
| return fMCRec->fRasterClip.isEmpty(); |
| |
| // TODO: should we only use the conservative answer in a recording canvas? |
| #if 0 |
| SkBaseDevice* dev = this->getTopDevice(); |
| // if no device we return true |
| return !dev || dev->onGetClipType() == SkBaseDevice::kEmpty_ClipType; |
| #endif |
| } |
| |
| bool SkCanvas::isClipRect() const { |
| SkBaseDevice* dev = this->getTopDevice(); |
| // if no device we return false |
| return dev && dev->onGetClipType() == SkBaseDevice::kRect_ClipType; |
| } |
| |
| static inline bool is_nan_or_clipped(const Sk4f& devRect, const Sk4f& devClip) { |
| #if !defined(SKNX_NO_SIMD) && SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE2 |
| __m128 lLtT = _mm_unpacklo_ps(devRect.fVec, devClip.fVec); |
| __m128 RrBb = _mm_unpackhi_ps(devClip.fVec, devRect.fVec); |
| __m128 mask = _mm_cmplt_ps(lLtT, RrBb); |
| return 0xF != _mm_movemask_ps(mask); |
| #elif !defined(SKNX_NO_SIMD) && defined(SK_ARM_HAS_NEON) |
| float32x4_t lLtT = vzipq_f32(devRect.fVec, devClip.fVec).val[0]; |
| float32x4_t RrBb = vzipq_f32(devClip.fVec, devRect.fVec).val[1]; |
| uint32x4_t mask = vcltq_f32(lLtT, RrBb); |
| return 0xFFFFFFFFFFFFFFFF != (uint64_t) vmovn_u32(mask); |
| #else |
| SkRect devRectAsRect; |
| SkRect devClipAsRect; |
| devRect.store(&devRectAsRect.fLeft); |
| devClip.store(&devClipAsRect.fLeft); |
| return !devRectAsRect.isFinite() || !devRectAsRect.intersect(devClipAsRect); |
| #endif |
| } |
| |
| // It's important for this function to not be inlined. Otherwise the compiler will share code |
| // between the fast path and the slow path, resulting in two slow paths. |
| static SK_NEVER_INLINE bool quick_reject_slow_path(const SkRect& src, const SkRect& deviceClip, |
| const SkMatrix& matrix) { |
| SkRect deviceRect; |
| matrix.mapRect(&deviceRect, src); |
| return !deviceRect.isFinite() || !deviceRect.intersect(deviceClip); |
| } |
| |
| bool SkCanvas::quickReject(const SkRect& src) const { |
| #ifdef SK_DEBUG |
| // Verify that fDeviceClipBounds are set properly. |
| SkRect tmp = qr_clip_bounds(fMCRec->fRasterClip.getBounds()); |
| if (fMCRec->fRasterClip.isEmpty()) { |
| SkASSERT(fDeviceClipBounds.isEmpty()); |
| } else { |
| SkASSERT(tmp == fDeviceClipBounds); |
| } |
| |
| // Verify that fIsScaleTranslate is set properly. |
| SkASSERT(fIsScaleTranslate == fMCRec->fMatrix.isScaleTranslate()); |
| #endif |
| |
| if (!fIsScaleTranslate) { |
| return quick_reject_slow_path(src, fDeviceClipBounds, fMCRec->fMatrix); |
| } |
| |
| // We inline the implementation of mapScaleTranslate() for the fast path. |
| float sx = fMCRec->fMatrix.getScaleX(); |
| float sy = fMCRec->fMatrix.getScaleY(); |
| float tx = fMCRec->fMatrix.getTranslateX(); |
| float ty = fMCRec->fMatrix.getTranslateY(); |
| Sk4f scale(sx, sy, sx, sy); |
| Sk4f trans(tx, ty, tx, ty); |
| |
| // Apply matrix. |
| Sk4f ltrb = Sk4f::Load(&src.fLeft) * scale + trans; |
| |
| // Make sure left < right, top < bottom. |
| Sk4f rblt(ltrb[2], ltrb[3], ltrb[0], ltrb[1]); |
| Sk4f min = Sk4f::Min(ltrb, rblt); |
| Sk4f max = Sk4f::Max(ltrb, rblt); |
| // We can extract either pair [0,1] or [2,3] from min and max and be correct, but on |
| // ARM this sequence generates the fastest (a single instruction). |
| Sk4f devRect = Sk4f(min[2], min[3], max[0], max[1]); |
| |
| // Check if the device rect is NaN or outside the clip. |
| return is_nan_or_clipped(devRect, Sk4f::Load(&fDeviceClipBounds.fLeft)); |
| } |
| |
| bool SkCanvas::quickReject(const SkPath& path) const { |
| return path.isEmpty() || this->quickReject(path.getBounds()); |
| } |
| |
| SkRect SkCanvas::getLocalClipBounds() const { |
| SkIRect ibounds = this->getDeviceClipBounds(); |
| if (ibounds.isEmpty()) { |
| return SkRect::MakeEmpty(); |
| } |
| |
| SkMatrix inverse; |
| // if we can't invert the CTM, we can't return local clip bounds |
| if (!fMCRec->fMatrix.invert(&inverse)) { |
| return SkRect::MakeEmpty(); |
| } |
| |
| SkRect bounds; |
| // adjust it outwards in case we are antialiasing |
| const int margin = 1; |
| |
| SkRect r = SkRect::Make(ibounds.makeOutset(margin, margin)); |
| inverse.mapRect(&bounds, r); |
| return bounds; |
| } |
| |
| SkIRect SkCanvas::getDeviceClipBounds() const { |
| return fMCRec->fRasterClip.getBounds(); |
| } |
| |
| const SkMatrix& SkCanvas::getTotalMatrix() const { |
| return fMCRec->fMatrix; |
| } |
| |
| GrRenderTargetContext* SkCanvas::internal_private_accessTopLayerRenderTargetContext() { |
| SkBaseDevice* dev = this->getTopDevice(); |
| return dev ? dev->accessRenderTargetContext() : nullptr; |
| } |
| |
| GrContext* SkCanvas::getGrContext() { |
| SkBaseDevice* device = this->getTopDevice(); |
| return device ? device->context() : nullptr; |
| } |
| |
| void SkCanvas::drawDRRect(const SkRRect& outer, const SkRRect& inner, |
| const SkPaint& paint) { |
| TRACE_EVENT0("skia", TRACE_FUNC); |
| if (outer.isEmpty()) { |
| return; |
| } |
| if (inner.isEmpty()) { |
| this->drawRRect(outer, paint); |
| return; |
| } |
| |
| // We don't have this method (yet), but technically this is what we should |
| // be able to return ... |
| // if (!outer.contains(inner))) { |
| // |
| // For now at least check for containment of bounds |
| if (!outer.getBounds().contains(inner.getBounds())) { |
| return; |
| } |
| |
| this->onDrawDRRect(outer, inner, paint); |
| } |
| |
| void SkCanvas::drawPaint(const SkPaint& paint) { |
| TRACE_EVENT0("skia", TRACE_FUNC); |
| this->onDrawPaint(paint); |
| } |
| |
| void SkCanvas::drawRect(const SkRect& r, const SkPaint& paint) { |
| TRACE_EVENT0("skia", TRACE_FUNC); |
| // To avoid redundant logic in our culling code and various backends, we always sort rects |
| // before passing them along. |
| this->onDrawRect(r.makeSorted(), paint); |
| } |
| |
| void SkCanvas::drawRegion(const SkRegion& region, const SkPaint& paint) { |
| TRACE_EVENT0("skia", TRACE_FUNC); |
| if (region.isEmpty()) { |
| return; |
| } |
| |
| if (region.isRect()) { |
| return this->drawIRect(region.getBounds(), paint); |
| } |
| |
| this->onDrawRegion(region, paint); |
| } |
| |
| void SkCanvas::drawOval(const SkRect& r, const SkPaint& paint) { |
| TRACE_EVENT0("skia", TRACE_FUNC); |
| // To avoid redundant logic in our culling code and various backends, we always sort rects |
| // before passing them along. |
| this->onDrawOval(r.makeSorted(), paint); |
| } |
| |
| void SkCanvas::drawRRect(const SkRRect& rrect, const SkPaint& paint) { |
| TRACE_EVENT0("skia", TRACE_FUNC); |
| this->onDrawRRect(rrect, paint); |
| } |
| |
| void SkCanvas::drawPoints(PointMode mode, size_t count, const SkPoint pts[], const SkPaint& paint) { |
| TRACE_EVENT0("skia", TRACE_FUNC); |
| this->onDrawPoints(mode, count, pts, paint); |
| } |
| |
| void SkCanvas::drawVertices(const sk_sp<SkVertices>& vertices, SkBlendMode mode, |
| const SkPaint& paint) { |
| TRACE_EVENT0("skia", TRACE_FUNC); |
| RETURN_ON_NULL(vertices); |
| // We expect fans to be converted to triangles when building or deserializing SkVertices. |
| SkASSERT(vertices->mode() != SkVertices::kTriangleFan_VertexMode); |
| this->onDrawVerticesObject(vertices.get(), nullptr, 0, mode, paint); |
| } |
| |
| void SkCanvas::drawVertices(const SkVertices* vertices, SkBlendMode mode, const SkPaint& paint) { |
| TRACE_EVENT0("skia", TRACE_FUNC); |
| RETURN_ON_NULL(vertices); |
| this->onDrawVerticesObject(vertices, nullptr, 0, mode, paint); |
| } |
| |
| void SkCanvas::drawVertices(const sk_sp<SkVertices>& vertices, const SkVertices::Bone bones[], |
| int boneCount, SkBlendMode mode, const SkPaint& paint) { |
| TRACE_EVENT0("skia", TRACE_FUNC); |
| RETURN_ON_NULL(vertices); |
| SkASSERT(boneCount <= 80); |
| this->onDrawVerticesObject(vertices.get(), bones, boneCount, mode, paint); |
| } |
| |
| void SkCanvas::drawVertices(const SkVertices* vertices, const SkVertices::Bone bones[], |
| int boneCount, SkBlendMode mode, const SkPaint& paint) { |
| TRACE_EVENT0("skia", TRACE_FUNC); |
| RETURN_ON_NULL(vertices); |
| SkASSERT(boneCount <= 80); |
| this->onDrawVerticesObject(vertices, bones, boneCount, mode, paint); |
| } |
| |
| void SkCanvas::drawPath(const SkPath& path, const SkPaint& paint) { |
| TRACE_EVENT0("skia", TRACE_FUNC); |
| this->onDrawPath(path, paint); |
| } |
| |
| void SkCanvas::drawImage(const SkImage* image, SkScalar x, SkScalar y, const SkPaint* paint) { |
| TRACE_EVENT0("skia", TRACE_FUNC); |
| RETURN_ON_NULL(image); |
| this->onDrawImage(image, x, y, paint); |
| } |
| |
| // Returns true if the rect can be "filled" : non-empty and finite |
| static bool fillable(const SkRect& r) { |
| SkScalar w = r.width(); |
| SkScalar h = r.height(); |
| return SkScalarIsFinite(w) && w > 0 && SkScalarIsFinite(h) && h > 0; |
| } |
| |
| void SkCanvas::drawImageRect(const SkImage* image, const SkRect& src, const SkRect& dst, |
| const SkPaint* paint, SrcRectConstraint constraint) { |
| TRACE_EVENT0("skia", TRACE_FUNC); |
| RETURN_ON_NULL(image); |
| if (!fillable(dst) || !fillable(src)) { |
| return; |
| } |
| this->onDrawImageRect(image, &src, dst, paint, constraint); |
| } |
| |
| void SkCanvas::drawImageRect(const SkImage* image, const SkIRect& isrc, const SkRect& dst, |
| const SkPaint* paint, SrcRectConstraint constraint) { |
| RETURN_ON_NULL(image); |
| this->drawImageRect(image, SkRect::Make(isrc), dst, paint, constraint); |
| } |
| |
| void SkCanvas::drawImageRect(const SkImage* image, const SkRect& dst, const SkPaint* paint) { |
| RETURN_ON_NULL(image); |
| this->drawImageRect(image, SkRect::MakeIWH(image->width(), image->height()), dst, paint, |
| kFast_SrcRectConstraint); |
| } |
| |
| namespace { |
| class LatticePaint : SkNoncopyable { |
| public: |
| LatticePaint(const SkPaint* origPaint) : fPaint(origPaint) { |
| if (!origPaint) { |
| return; |
| } |
| if (origPaint->getFilterQuality() > kLow_SkFilterQuality) { |
| fPaint.writable()->setFilterQuality(kLow_SkFilterQuality); |
| } |
| if (origPaint->getMaskFilter()) { |
| fPaint.writable()->setMaskFilter(nullptr); |
| } |
| if (origPaint->isAntiAlias()) { |
| fPaint.writable()->setAntiAlias(false); |
| } |
| } |
| |
| const SkPaint* get() const { |
| return fPaint; |
| } |
| |
| private: |
| SkTCopyOnFirstWrite<SkPaint> fPaint; |
| }; |
| } // namespace |
| |
| void SkCanvas::drawImageNine(const SkImage* image, const SkIRect& center, const SkRect& dst, |
| const SkPaint* paint) { |
| TRACE_EVENT0("skia", TRACE_FUNC); |
| RETURN_ON_NULL(image); |
| if (dst.isEmpty()) { |
| return; |
| } |
| if (SkLatticeIter::Valid(image->width(), image->height(), center)) { |
| LatticePaint latticePaint(paint); |
| this->onDrawImageNine(image, center, dst, latticePaint.get()); |
| } else { |
| this->drawImageRect(image, dst, paint); |
| } |
| } |
| |
| void SkCanvas::drawImageLattice(const SkImage* image, const Lattice& lattice, const SkRect& dst, |
| const SkPaint* paint) { |
| TRACE_EVENT0("skia", TRACE_FUNC); |
| RETURN_ON_NULL(image); |
| if (dst.isEmpty()) { |
| return; |
| } |
| |
| SkIRect bounds; |
| Lattice latticePlusBounds = lattice; |
| if (!latticePlusBounds.fBounds) { |
| bounds = SkIRect::MakeWH(image->width(), image->height()); |
| latticePlusBounds.fBounds = &bounds; |
| } |
| |
| if (SkLatticeIter::Valid(image->width(), image->height(), latticePlusBounds)) { |
| LatticePaint latticePaint(paint); |
| this->onDrawImageLattice(image, latticePlusBounds, dst, latticePaint.get()); |
| } else { |
| this->drawImageRect(image, dst, paint); |
| } |
| } |
| |
| void SkCanvas::experimental_DrawImageSetV1(const ImageSetEntry imageSet[], int cnt, |
| SkFilterQuality filterQuality, SkBlendMode mode) { |
| TRACE_EVENT0("skia", TRACE_FUNC); |
| RETURN_ON_NULL(imageSet); |
| RETURN_ON_FALSE(cnt); |
| |
| this->onDrawImageSet(imageSet, cnt, filterQuality, mode); |
| } |
| |
| void SkCanvas::drawBitmap(const SkBitmap& bitmap, SkScalar dx, SkScalar dy, const SkPaint* paint) { |
| TRACE_EVENT0("skia", TRACE_FUNC); |
| if (bitmap.drawsNothing()) { |
| return; |
| } |
| this->onDrawBitmap(bitmap, dx, dy, paint); |
| } |
| |
| void SkCanvas::drawBitmapRect(const SkBitmap& bitmap, const SkRect& src, const SkRect& dst, |
| const SkPaint* paint, SrcRectConstraint constraint) { |
| TRACE_EVENT0("skia", TRACE_FUNC); |
| if (bitmap.drawsNothing() || dst.isEmpty() || src.isEmpty()) { |
| return; |
| } |
| this->onDrawBitmapRect(bitmap, &src, dst, paint, constraint); |
| } |
| |
| void SkCanvas::drawBitmapRect(const SkBitmap& bitmap, const SkIRect& isrc, const SkRect& dst, |
| const SkPaint* paint, SrcRectConstraint constraint) { |
| this->drawBitmapRect(bitmap, SkRect::Make(isrc), dst, paint, constraint); |
| } |
| |
| void SkCanvas::drawBitmapRect(const SkBitmap& bitmap, const SkRect& dst, const SkPaint* paint, |
| SrcRectConstraint constraint) { |
| this->drawBitmapRect(bitmap, SkRect::MakeIWH(bitmap.width(), bitmap.height()), dst, paint, |
| constraint); |
| } |
| |
| void SkCanvas::drawBitmapNine(const SkBitmap& bitmap, const SkIRect& center, const SkRect& dst, |
| const SkPaint* paint) { |
| TRACE_EVENT0("skia", TRACE_FUNC); |
| if (bitmap.drawsNothing() || dst.isEmpty()) { |
| return; |
| } |
| if (SkLatticeIter::Valid(bitmap.width(), bitmap.height(), center)) { |
| LatticePaint latticePaint(paint); |
| this->onDrawBitmapNine(bitmap, center, dst, latticePaint.get()); |
| } else { |
| this->drawBitmapRect(bitmap, dst, paint); |
| } |
| } |
| |
| void SkCanvas::drawBitmapLattice(const SkBitmap& bitmap, const Lattice& lattice, const SkRect& dst, |
| const SkPaint* paint) { |
| TRACE_EVENT0("skia", TRACE_FUNC); |
| if (bitmap.drawsNothing() || dst.isEmpty()) { |
| return; |
| } |
| |
| SkIRect bounds; |
| Lattice latticePlusBounds = lattice; |
| if (!latticePlusBounds.fBounds) { |
| bounds = SkIRect::MakeWH(bitmap.width(), bitmap.height()); |
| latticePlusBounds.fBounds = &bounds; |
| } |
| |
| if (SkLatticeIter::Valid(bitmap.width(), bitmap.height(), latticePlusBounds)) { |
| LatticePaint latticePaint(paint); |
| this->onDrawBitmapLattice(bitmap, latticePlusBounds, dst, latticePaint.get()); |
| } else { |
| this->drawBitmapRect(bitmap, dst, paint); |
| } |
| } |
| |
| void SkCanvas::drawAtlas(const SkImage* atlas, const SkRSXform xform[], const SkRect tex[], |
| const SkColor colors[], int count, SkBlendMode mode, |
| const SkRect* cull, const SkPaint* paint) { |
| TRACE_EVENT0("skia", TRACE_FUNC); |
| RETURN_ON_NULL(atlas); |
| if (count <= 0) { |
| return; |
| } |
| SkASSERT(atlas); |
| SkASSERT(tex); |
| this->onDrawAtlas(atlas, xform, tex, colors, count, mode, cull, paint); |
| } |
| |
| void SkCanvas::drawAnnotation(const SkRect& rect, const char key[], SkData* value) { |
| TRACE_EVENT0("skia", TRACE_FUNC); |
| if (key) { |
| this->onDrawAnnotation(rect, key, value); |
| } |
| } |
| |
| void SkCanvas::legacy_drawImageRect(const SkImage* image, const SkRect* src, const SkRect& dst, |
| const SkPaint* paint, SrcRectConstraint constraint) { |
| if (src) { |
| this->drawImageRect(image, *src, dst, paint, constraint); |
| } else { |
| this->drawImageRect(image, SkRect::MakeIWH(image->width(), image->height()), |
| dst, paint, constraint); |
| } |
| } |
| void SkCanvas::legacy_drawBitmapRect(const SkBitmap& bitmap, const SkRect* src, const SkRect& dst, |
| const SkPaint* paint, SrcRectConstraint constraint) { |
| if (src) { |
| this->drawBitmapRect(bitmap, *src, dst, paint, constraint); |
| } else { |
| this->drawBitmapRect(bitmap, SkRect::MakeIWH(bitmap.width(), bitmap.height()), |
| dst, paint, constraint); |
| } |
| } |
| |
| void SkCanvas::private_draw_shadow_rec(const SkPath& path, const SkDrawShadowRec& rec) { |
| TRACE_EVENT0("skia", TRACE_FUNC); |
| this->onDrawShadowRec(path, rec); |
| } |
| |
| void SkCanvas::onDrawShadowRec(const SkPath& path, const SkDrawShadowRec& rec) { |
| SkPaint paint; |
| const SkRect& pathBounds = path.getBounds(); |
| |
| LOOPER_BEGIN(paint, &pathBounds) |
| while (iter.next()) { |
| iter.fDevice->drawShadow(path, rec); |
| } |
| LOOPER_END |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| // These are the virtual drawing methods |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| void SkCanvas::onDiscard() { |
| if (fSurfaceBase) { |
| fSurfaceBase->aboutToDraw(SkSurface::kDiscard_ContentChangeMode); |
| } |
| } |
| |
| void SkCanvas::onDrawPaint(const SkPaint& paint) { |
| this->internalDrawPaint(paint); |
| } |
| |
| void SkCanvas::internalDrawPaint(const SkPaint& paint) { |
| LOOPER_BEGIN_CHECK_COMPLETE_OVERWRITE(paint, nullptr, false) |
| |
| while (iter.next()) { |
| iter.fDevice->drawPaint(looper.paint()); |
| } |
| |
| LOOPER_END |
| } |
| |
| void SkCanvas::onDrawPoints(PointMode mode, size_t count, const SkPoint pts[], |
| const SkPaint& paint) { |
| if ((long)count <= 0) { |
| return; |
| } |
| |
| SkRect r; |
| const SkRect* bounds = nullptr; |
| if (paint.canComputeFastBounds()) { |
| // special-case 2 points (common for drawing a single line) |
| if (2 == count) { |
| r.set(pts[0], pts[1]); |
| } else { |
| r.set(pts, SkToInt(count)); |
| } |
| if (!r.isFinite()) { |
| return; |
| } |
| SkRect storage; |
| if (this->quickReject(paint.computeFastStrokeBounds(r, &storage))) { |
| return; |
| } |
| bounds = &r; |
| } |
| |
| SkASSERT(pts != nullptr); |
| |
| LOOPER_BEGIN(paint, bounds) |
| |
| while (iter.next()) { |
| iter.fDevice->drawPoints(mode, count, pts, looper.paint()); |
| } |
| |
| LOOPER_END |
| } |
| |
| static bool needs_autodrawlooper(SkCanvas* canvas, const SkPaint& paint) { |
| return ((intptr_t)paint.getImageFilter() | |
| (intptr_t)paint.getLooper() ) != 0; |
| } |
| |
| void SkCanvas::onDrawRect(const SkRect& r, const SkPaint& paint) { |
| SkASSERT(r.isSorted()); |
| if (paint.canComputeFastBounds()) { |
| SkRect storage; |
| if (this->quickReject(paint.computeFastBounds(r, &storage))) { |
| return; |
| } |
| } |
| |
| if (needs_autodrawlooper(this, paint)) { |
| LOOPER_BEGIN_CHECK_COMPLETE_OVERWRITE(paint, &r, false) |
| |
| while (iter.next()) { |
| iter.fDevice->drawRect(r, looper.paint()); |
| } |
| |
| LOOPER_END |
| } else if (!paint.nothingToDraw()) { |
| this->predrawNotify(&r, &paint, false); |
| SkDrawIter iter(this); |
| while (iter.next()) { |
| iter.fDevice->drawRect(r, paint); |
| } |
| } |
| } |
| |
| void SkCanvas::onDrawRegion(const SkRegion& region, const SkPaint& paint) { |
| SkRect regionRect = SkRect::Make(region.getBounds()); |
| if (paint.canComputeFastBounds()) { |
| SkRect storage; |
| if (this->quickReject(paint.computeFastBounds(regionRect, &storage))) { |
| return; |
| } |
| } |
| |
| LOOPER_BEGIN(paint, ®ionRect) |
| |
| while (iter.next()) { |
| iter.fDevice->drawRegion(region, looper.paint()); |
| } |
| |
| LOOPER_END |
| } |
| |
| void SkCanvas::onDrawOval(const SkRect& oval, const SkPaint& paint) { |
| SkASSERT(oval.isSorted()); |
| if (paint.canComputeFastBounds()) { |
| SkRect storage; |
| if (this->quickReject(paint.computeFastBounds(oval, &storage))) { |
| return; |
| } |
| } |
| |
| LOOPER_BEGIN(paint, &oval) |
| |
| while (iter.next()) { |
| iter.fDevice->drawOval(oval, looper.paint()); |
| } |
| |
| LOOPER_END |
| } |
| |
| void SkCanvas::onDrawArc(const SkRect& oval, SkScalar startAngle, |
| SkScalar sweepAngle, bool useCenter, |
| const SkPaint& paint) { |
| SkASSERT(oval.isSorted()); |
| if (paint.canComputeFastBounds()) { |
| SkRect storage; |
| // Note we're using the entire oval as the bounds. |
| if (this->quickReject(paint.computeFastBounds(oval, &storage))) { |
| return; |
| } |
| } |
| |
| LOOPER_BEGIN(paint, &oval) |
| |
| while (iter.next()) { |
| iter.fDevice->drawArc(oval, startAngle, sweepAngle, useCenter, looper.paint()); |
| } |
| |
| LOOPER_END |
| } |
| |
| void SkCanvas::onDrawRRect(const SkRRect& rrect, const SkPaint& paint) { |
| if (paint.canComputeFastBounds()) { |
| SkRect storage; |
| if (this->quickReject(paint.computeFastBounds(rrect.getBounds(), &storage))) { |
| return; |
| } |
| } |
| |
| if (rrect.isRect()) { |
| // call the non-virtual version |
| this->SkCanvas::drawRect(rrect.getBounds(), paint); |
| return; |
| } else if (rrect.isOval()) { |
| // call the non-virtual version |
| this->SkCanvas::drawOval(rrect.getBounds(), paint); |
| return; |
| } |
| |
| LOOPER_BEGIN(paint, &rrect.getBounds()) |
| |
| while (iter.next()) { |
| iter.fDevice->drawRRect(rrect, looper.paint()); |
| } |
| |
| LOOPER_END |
| } |
| |
| void SkCanvas::onDrawDRRect(const SkRRect& outer, const SkRRect& inner, const SkPaint& paint) { |
| if (paint.canComputeFastBounds()) { |
| SkRect storage; |
| if (this->quickReject(paint.computeFastBounds(outer.getBounds(), &storage))) { |
| return; |
| } |
| } |
| |
| LOOPER_BEGIN(paint, &outer.getBounds()) |
| |
| while (iter.next()) { |
| iter.fDevice->drawDRRect(outer, inner, looper.paint()); |
| } |
| |
| LOOPER_END |
| } |
| |
| void SkCanvas::onDrawPath(const SkPath& path, const SkPaint& paint) { |
| if (!path.isFinite()) { |
| return; |
| } |
| |
| const SkRect& pathBounds = path.getBounds(); |
| if (!path.isInverseFillType() && paint.canComputeFastBounds()) { |
| SkRect storage; |
| if (this->quickReject(paint.computeFastBounds(pathBounds, &storage))) { |
| return; |
| } |
| } |
| |
| if (pathBounds.width() <= 0 && pathBounds.height() <= 0) { |
| if (path.isInverseFillType()) { |
| this->internalDrawPaint(paint); |
| return; |
| } |
| } |
| |
| LOOPER_BEGIN(paint, &pathBounds) |
| |
| while (iter.next()) { |
| iter.fDevice->drawPath(path, looper.paint()); |
| } |
| |
| LOOPER_END |
| } |
| |
| bool SkCanvas::canDrawBitmapAsSprite(SkScalar x, SkScalar y, int w, int h, const SkPaint& paint) { |
| if (!paint.getImageFilter()) { |
| return false; |
| } |
| |
| const SkMatrix& ctm = this->getTotalMatrix(); |
| if (!SkTreatAsSprite(ctm, SkISize::Make(w, h), paint)) { |
| return false; |
| } |
| |
| // Currently we can only use the filterSprite code if we are clipped to the bitmap's bounds. |
| // Once we can filter and the filter will return a result larger than itself, we should be |
| // able to remove this constraint. |
| // skbug.com/4526 |
| // |
| SkPoint pt; |
| ctm.mapXY(x, y, &pt); |
| SkIRect ir = SkIRect::MakeXYWH(SkScalarRoundToInt(pt.x()), SkScalarRoundToInt(pt.y()), w, h); |
| return ir.contains(fMCRec->fRasterClip.getBounds()); |
| } |
| |
| // Given storage for a real paint, and an optional paint parameter, clean-up the param (if non-null) |
| // given the drawing semantics for drawImage/bitmap (skbug.com/7804) and return it, or the original |
| // null. |
| static const SkPaint* init_image_paint(SkPaint* real, const SkPaint* paintParam) { |
| if (paintParam) { |
| *real = *paintParam; |
| real->setStyle(SkPaint::kFill_Style); |
| real->setPathEffect(nullptr); |
| paintParam = real; |
| } |
| return paintParam; |
| } |
| |
| void SkCanvas::onDrawImage(const SkImage* image, SkScalar x, SkScalar y, const SkPaint* paint) { |
| SkPaint realPaint; |
| paint = init_image_paint(&realPaint, paint); |
| |
| SkRect bounds = SkRect::MakeXYWH(x, y, |
| SkIntToScalar(image->width()), SkIntToScalar(image->height())); |
| if (nullptr == paint || paint->canComputeFastBounds()) { |
| SkRect tmp = bounds; |
| if (paint) { |
| paint->computeFastBounds(tmp, &tmp); |
| } |
| if (this->quickReject(tmp)) { |
| return; |
| } |
| } |
| // At this point we need a real paint object. If the caller passed null, then we should |
| // use realPaint (in its default state). If the caller did pass a paint, then we have copied |
| // (and modified) it in realPaint. Thus either way, "realPaint" is what we want to use. |
| paint = &realPaint; |
| |
| sk_sp<SkSpecialImage> special; |
| bool drawAsSprite = this->canDrawBitmapAsSprite(x, y, image->width(), image->height(), |
| *paint); |
| if (drawAsSprite && paint->getImageFilter()) { |
| special = this->getDevice()->makeSpecial(image); |
| if (!special) { |
| drawAsSprite = false; |
| } |
| } |
| |
| LOOPER_BEGIN_DRAWBITMAP(*paint, drawAsSprite, &bounds) |
| |
| while (iter.next()) { |
| const SkPaint& pnt = looper.paint(); |
| if (special) { |
| SkPoint pt; |
| iter.fDevice->ctm().mapXY(x, y, &pt); |
| iter.fDevice->drawSpecial(special.get(), |
| SkScalarRoundToInt(pt.fX), |
| SkScalarRoundToInt(pt.fY), pnt, |
| nullptr, SkMatrix::I()); |
| } else { |
| iter.fDevice->drawImage(image, x, y, pnt); |
| } |
| } |
| |
| LOOPER_END |
| } |
| |
| void SkCanvas::onDrawImageRect(const SkImage* image, const SkRect* src, const SkRect& dst, |
| const SkPaint* paint, SrcRectConstraint constraint) { |
| SkPaint realPaint; |
| paint = init_image_paint(&realPaint, paint); |
| |
| if (nullptr == paint || paint->canComputeFastBounds()) { |
| SkRect storage = dst; |
| if (paint) { |
| paint->computeFastBounds(dst, &storage); |
| } |
| if (this->quickReject(storage)) { |
| return; |
| } |
| } |
| paint = &realPaint; |
| |
| LOOPER_BEGIN_CHECK_COMPLETE_OVERWRITE(*paint, &dst, image->isOpaque()) |
| |
| while (iter.next()) { |
| iter.fDevice->drawImageRect(image, src, dst, looper.paint(), constraint); |
| } |
| |
| LOOPER_END |
| } |
| |
| void SkCanvas::onDrawBitmap(const SkBitmap& bitmap, SkScalar x, SkScalar y, const SkPaint* paint) { |
| SkDEBUGCODE(bitmap.validate();) |
| |
| if (bitmap.drawsNothing()) { |
| return; |
| } |
| |
| SkPaint realPaint; |
| init_image_paint(&realPaint, paint); |
| paint = &realPaint; |
| |
| SkRect bounds; |
| bitmap.getBounds(&bounds); |
| bounds.offset(x, y); |
| bool canFastBounds = paint->canComputeFastBounds(); |
| if (canFastBounds) { |
| SkRect storage; |
| if (this->quickReject(paint->computeFastBounds(bounds, &storage))) { |
| return; |
| } |
| } |
| |
| sk_sp<SkSpecialImage> special; |
| bool drawAsSprite = canFastBounds && this->canDrawBitmapAsSprite(x, y, bitmap.width(), |
| bitmap.height(), *paint); |
| if (drawAsSprite && paint->getImageFilter()) { |
| special = this->getDevice()->makeSpecial(bitmap); |
| if (!special) { |
| drawAsSprite = false; |
| } |
| } |
| |
| LOOPER_BEGIN_DRAWBITMAP(*paint, drawAsSprite, &bounds) |
| |
| while (iter.next()) { |
| const SkPaint& pnt = looper.paint(); |
| if (special) { |
| SkPoint pt; |
| iter.fDevice->ctm().mapXY(x, y, &pt); |
| iter.fDevice->drawSpecial(special.get(), |
| SkScalarRoundToInt(pt.fX), |
| SkScalarRoundToInt(pt.fY), pnt, |
| nullptr, SkMatrix::I()); |
| } else { |
| iter.fDevice->drawBitmap(bitmap, x, y, looper.paint()); |
| } |
| } |
| |
| LOOPER_END |
| } |
| |
| // this one is non-virtual, so it can be called safely by other canvas apis |
| void SkCanvas::internalDrawBitmapRect(const SkBitmap& bitmap, const SkRect* src, |
| const SkRect& dst, const SkPaint* paint, |
| SrcRectConstraint constraint) { |
| if (bitmap.drawsNothing() || dst.isEmpty()) { |
| return; |
| } |
| |
| if (nullptr == paint || paint->canComputeFastBounds()) { |
| SkRect storage; |
| if (this->quickReject(paint ? paint->computeFastBounds(dst, &storage) : dst)) { |
| return; |
| } |
| } |
| |
| SkLazyPaint lazy; |
| if (nullptr == paint) { |
| paint = lazy.init(); |
| } |
| |
| LOOPER_BEGIN_CHECK_COMPLETE_OVERWRITE(*paint, &dst, bitmap.isOpaque()) |
| |
| while (iter.next()) { |
| iter.fDevice->drawBitmapRect(bitmap, src, dst, looper.paint(), constraint); |
| } |
| |
| LOOPER_END |
| } |
| |
| void SkCanvas::onDrawBitmapRect(const SkBitmap& bitmap, const SkRect* src, const SkRect& dst, |
| const SkPaint* paint, SrcRectConstraint constraint) { |
| SkDEBUGCODE(bitmap.validate();) |
| this->internalDrawBitmapRect(bitmap, src, dst, paint, constraint); |
| } |
| |
| void SkCanvas::onDrawImageNine(const SkImage* image, const SkIRect& center, const SkRect& dst, |
| const SkPaint* paint) { |
| SkPaint realPaint; |
| paint = init_image_paint(&realPaint, paint); |
| |
| if (nullptr == paint || paint->canComputeFastBounds()) { |
| SkRect storage; |
| if (this->quickReject(paint ? paint->computeFastBounds(dst, &storage) : dst)) { |
| return; |
| } |
| } |
| paint = &realPaint; |
| |
| LOOPER_BEGIN(*paint, &dst) |
| |
| while (iter.next()) { |
| iter.fDevice->drawImageNine(image, center, dst, looper.paint()); |
| } |
| |
| LOOPER_END |
| } |
| |
| void SkCanvas::onDrawBitmapNine(const SkBitmap& bitmap, const SkIRect& center, const SkRect& dst, |
| const SkPaint* paint) { |
| SkDEBUGCODE(bitmap.validate();) |
| SkPaint realPaint; |
| paint = init_image_paint(&realPaint, paint); |
| |
| if (nullptr == paint || paint->canComputeFastBounds()) { |
| SkRect storage; |
| if (this->quickReject(paint ? paint->computeFastBounds(dst, &storage) : dst)) { |
| return; |
| } |
| } |
| paint = &realPaint; |
| |
| LOOPER_BEGIN(*paint, &dst) |
| |
| while (iter.next()) { |
| iter.fDevice->drawBitmapNine(bitmap, center, dst, looper.paint()); |
| } |
| |
| LOOPER_END |
| } |
| |
| void SkCanvas::onDrawImageLattice(const SkImage* image, const Lattice& lattice, const SkRect& dst, |
| const SkPaint* paint) { |
| SkPaint realPaint; |
| paint = init_image_paint(&realPaint, paint); |
| |
| if (nullptr == paint || paint->canComputeFastBounds()) { |
| SkRect storage; |
| if (this->quickReject(paint ? paint->computeFastBounds(dst, &storage) : dst)) { |
| return; |
| } |
| } |
| paint = &realPaint; |
| |
| LOOPER_BEGIN(*paint, &dst) |
| |
| while (iter.next()) { |
| iter.fDevice->drawImageLattice(image, lattice, dst, looper.paint()); |
| } |
| |
| LOOPER_END |
| } |
| |
| void SkCanvas::onDrawImageSet(const ImageSetEntry imageSet[], int count, |
| SkFilterQuality filterQuality, SkBlendMode mode) { |
| SkPaint paint; |
| LOOPER_BEGIN(paint, nullptr) |
| while (iter.next()) { |
| iter.fDevice->drawImageSet(imageSet, count, filterQuality, mode); |
| } |
| LOOPER_END |
| } |
| |
| void SkCanvas::onDrawBitmapLattice(const SkBitmap& bitmap, const Lattice& lattice, |
| const SkRect& dst, const SkPaint* paint) { |
| SkPaint realPaint; |
| paint = init_image_paint(&realPaint, paint); |
| |
| if (nullptr == paint || paint->canComputeFastBounds()) { |
| SkRect storage; |
| if (this->quickReject(paint ? paint->computeFastBounds(dst, &storage) : dst)) { |
| return; |
| } |
| } |
| paint = &realPaint; |
| |
| LOOPER_BEGIN(*paint, &dst) |
| |
| while (iter.next()) { |
| iter.fDevice->drawBitmapLattice(bitmap, lattice, dst, looper.paint()); |
| } |
| |
| LOOPER_END |
| } |
| |
| void SkCanvas::onDrawTextBlob(const SkTextBlob* blob, SkScalar x, SkScalar y, |
| const SkPaint& paint) { |
| SkRect storage; |
| const SkRect* bounds = nullptr; |
| if (paint.canComputeFastBounds()) { |
| storage = blob->bounds().makeOffset(x, y); |
| SkRect tmp; |
| if (this->quickReject(paint.computeFastBounds(storage, &tmp))) { |
| return; |
| } |
| bounds = &storage; |
| } |
| |
| // We cannot filter in the looper as we normally do, because the paint is |
| // incomplete at this point (text-related attributes are embedded within blob run paints). |
| LOOPER_BEGIN(paint, bounds) |
| |
| while (iter.next()) { |
| fScratchGlyphRunBuilder->drawTextBlob(looper.paint(), *blob, {x, y}, iter.fDevice); |
| } |
| |
| LOOPER_END |
| } |
| |
| // These call the (virtual) onDraw... method |
| void SkCanvas::drawSimpleText(const void* text, size_t byteLength, SkTextEncoding encoding, |
| SkScalar x, SkScalar y, const SkFont& font, const SkPaint& paint) { |
| TRACE_EVENT0("skia", TRACE_FUNC); |
| if (byteLength) { |
| sk_msan_assert_initialized(text, SkTAddOffset<const void>(text, byteLength)); |
| this->drawTextBlob(SkTextBlob::MakeFromText(text, byteLength, font, encoding), x, y, paint); |
| } |
| } |
| void SkCanvas::drawText(const void* text, size_t byteLength, SkScalar x, SkScalar y, |
| const SkPaint& paint) { |
| #ifdef SK_SUPPORT_LEGACY_PAINT_FONT_FIELDS |
| TRACE_EVENT0("skia", TRACE_FUNC); |
| if (byteLength) { |
| sk_msan_assert_initialized(text, SkTAddOffset<const void>(text, byteLength)); |
| const SkFont font = SkFont::LEGACY_ExtractFromPaint(paint); |
| const SkTextEncoding encoding = paint.private_internal_getTextEncoding(); |
| this->drawTextBlob(SkTextBlob::MakeFromText(text, byteLength, font, encoding), x, y, paint); |
| } |
| #endif |
| } |
| void SkCanvas::drawTextBlob(const SkTextBlob* blob, SkScalar x, SkScalar y, |
| const SkPaint& paint) { |
| TRACE_EVENT0("skia", TRACE_FUNC); |
| RETURN_ON_NULL(blob); |
| RETURN_ON_FALSE(blob->bounds().makeOffset(x, y).isFinite()); |
| this->onDrawTextBlob(blob, x, y, paint); |
| } |
| |
| void SkCanvas::onDrawVerticesObject(const SkVertices* vertices, const SkVertices::Bone bones[], |
| int boneCount, SkBlendMode bmode, const SkPaint& paint) { |
| LOOPER_BEGIN(paint, nullptr) |
| |
| while (iter.next()) { |
| // In the common case of one iteration we could std::move vertices here. |
| iter.fDevice->drawVertices(vertices, bones, boneCount, bmode, looper.paint()); |
| } |
| |
| LOOPER_END |
| } |
| |
| void SkCanvas::drawPatch(const SkPoint cubics[12], const SkColor colors[4], |
| const SkPoint texCoords[4], SkBlendMode bmode, |
| const SkPaint& paint) { |
| TRACE_EVENT0("skia", TRACE_FUNC); |
| if (nullptr == cubics) { |
| return; |
| } |
| |
| this->onDrawPatch(cubics, colors, texCoords, bmode, paint); |
| } |
| |
| void SkCanvas::onDrawPatch(const SkPoint cubics[12], const SkColor colors[4], |
| const SkPoint texCoords[4], SkBlendMode bmode, |
| const SkPaint& paint) { |
| // Since a patch is always within the convex hull of the control points, we discard it when its |
| // bounding rectangle is completely outside the current clip. |
| SkRect bounds; |
| bounds.set(cubics, SkPatchUtils::kNumCtrlPts); |
| if (this->quickReject(bounds)) { |
| return; |
| } |
| |
| LOOPER_BEGIN(paint, nullptr) |
| |
| while (iter.next()) { |
| iter.fDevice->drawPatch(cubics, colors, texCoords, bmode, paint); |
| } |
| |
| LOOPER_END |
| } |
| |
| void SkCanvas::drawDrawable(SkDrawable* dr, SkScalar x, SkScalar y) { |
| #ifndef SK_BUILD_FOR_ANDROID_FRAMEWORK |
| TRACE_EVENT0("skia", TRACE_FUNC); |
| #endif |
| RETURN_ON_NULL(dr); |
| if (x || y) { |
| SkMatrix matrix = SkMatrix::MakeTrans(x, y); |
| this->onDrawDrawable(dr, &matrix); |
| } else { |
| this->onDrawDrawable(dr, nullptr); |
| } |
| } |
| |
| void SkCanvas::drawDrawable(SkDrawable* dr, const SkMatrix* matrix) { |
| #ifndef SK_BUILD_FOR_ANDROID_FRAMEWORK |
| TRACE_EVENT0("skia", TRACE_FUNC); |
| #endif |
| RETURN_ON_NULL(dr); |
| if (matrix && matrix->isIdentity()) { |
| matrix = nullptr; |
| } |
| this->onDrawDrawable(dr, matrix); |
| } |
| |
| void SkCanvas::onDrawDrawable(SkDrawable* dr, const SkMatrix* matrix) { |
| // drawable bounds are no longer reliable (e.g. android displaylist) |
| // so don't use them for quick-reject |
| this->getDevice()->drawDrawable(dr, matrix, this); |
| } |
| |
| void SkCanvas::onDrawAtlas(const SkImage* atlas, const SkRSXform xform[], const SkRect tex[], |
| const SkColor colors[], int count, SkBlendMode bmode, |
| const SkRect* cull, const SkPaint* paint) { |
| if (cull && this->quickReject(*cull)) { |
| return; |
| } |
| |
| SkPaint pnt; |
| if (paint) { |
| pnt = *paint; |
| } |
| |
| LOOPER_BEGIN(pnt, nullptr) |
| while (iter.next()) { |
| iter.fDevice->drawAtlas(atlas, xform, tex, colors, count, bmode, pnt); |
| } |
| LOOPER_END |
| } |
| |
| void SkCanvas::onDrawAnnotation(const SkRect& rect, const char key[], SkData* value) { |
| SkASSERT(key); |
| |
| SkPaint paint; |
| LOOPER_BEGIN(paint, nullptr) |
| while (iter.next()) { |
| iter.fDevice->drawAnnotation(rect, key, value); |
| } |
| LOOPER_END |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| // These methods are NOT virtual, and therefore must call back into virtual |
| // methods, rather than actually drawing themselves. |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| void SkCanvas::drawColor(SkColor c, SkBlendMode mode) { |
| SkPaint paint; |
| paint.setColor(c); |
| paint.setBlendMode(mode); |
| this->drawPaint(paint); |
| } |
| |
| void SkCanvas::drawPoint(SkScalar x, SkScalar y, const SkPaint& paint) { |
| const SkPoint pt = { x, y }; |
| this->drawPoints(kPoints_PointMode, 1, &pt, paint); |
| } |
| |
| void SkCanvas::drawLine(SkScalar x0, SkScalar y0, SkScalar x1, SkScalar y1, const SkPaint& paint) { |
| SkPoint pts[2]; |
| pts[0].set(x0, y0); |
| pts[1].set(x1, y1); |
| this->drawPoints(kLines_PointMode, 2, pts, paint); |
| } |
| |
| void SkCanvas::drawCircle(SkScalar cx, SkScalar cy, SkScalar radius, const SkPaint& paint) { |
| if (radius < 0) { |
| radius = 0; |
| } |
| |
| SkRect r; |
| r.set(cx - radius, cy - radius, cx + radius, cy + radius); |
| this->drawOval(r, paint); |
| } |
| |
| void SkCanvas::drawRoundRect(const SkRect& r, SkScalar rx, SkScalar ry, |
| const SkPaint& paint) { |
| if (rx > 0 && ry > 0) { |
| SkRRect rrect; |
| rrect.setRectXY(r, rx, ry); |
| this->drawRRect(rrect, paint); |
| } else { |
| this->drawRect(r, paint); |
| } |
| } |
| |
| void SkCanvas::drawArc(const SkRect& oval, SkScalar startAngle, |
| SkScalar sweepAngle, bool useCenter, |
| const SkPaint& paint) { |
| TRACE_EVENT0("skia", TRACE_FUNC); |
| if (oval.isEmpty() || !sweepAngle) { |
| return; |
| } |
| this->onDrawArc(oval, startAngle, sweepAngle, useCenter, paint); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| #ifdef SK_DISABLE_SKPICTURE |
| void SkCanvas::drawPicture(const SkPicture* picture, const SkMatrix* matrix, const SkPaint* paint) {} |
| |
| |
| void SkCanvas::onDrawPicture(const SkPicture* picture, const SkMatrix* matrix, |
| const SkPaint* paint) {} |
| #else |
| /** |
| * This constant is trying to balance the speed of ref'ing a subpicture into a parent picture, |
| * against the playback cost of recursing into the subpicture to get at its actual ops. |
| * |
| * For now we pick a conservatively small value, though measurement (and other heuristics like |
| * the type of ops contained) may justify changing this value. |
| */ |
| #define kMaxPictureOpsToUnrollInsteadOfRef 1 |
| |
| void SkCanvas::drawPicture(const SkPicture* picture, const SkMatrix* matrix, const SkPaint* paint) { |
| TRACE_EVENT0("skia", TRACE_FUNC); |
| RETURN_ON_NULL(picture); |
| |
| if (matrix && matrix->isIdentity()) { |
| matrix = nullptr; |
| } |
| if (picture->approximateOpCount() <= kMaxPictureOpsToUnrollInsteadOfRef) { |
| SkAutoCanvasMatrixPaint acmp(this, matrix, paint, picture->cullRect()); |
| picture->playback(this); |
| } else { |
| this->onDrawPicture(picture, matrix, paint); |
| } |
| } |
| |
| void SkCanvas::onDrawPicture(const SkPicture* picture, const SkMatrix* matrix, |
| const SkPaint* paint) { |
| if (!paint || paint->canComputeFastBounds()) { |
| SkRect bounds = picture->cullRect(); |
| if (paint) { |
| paint->computeFastBounds(bounds, &bounds); |
| } |
| if (matrix) { |
| matrix->mapRect(&bounds); |
| } |
| if (this->quickReject(bounds)) { |
| return; |
| } |
| } |
| |
| SkAutoCanvasMatrixPaint acmp(this, matrix, paint, picture->cullRect()); |
| picture->playback(this); |
| } |
| #endif |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| SkCanvas::LayerIter::LayerIter(SkCanvas* canvas) { |
| static_assert(sizeof(fStorage) >= sizeof(SkDrawIter), "fStorage_too_small"); |
| |
| SkASSERT(canvas); |
| |
| fImpl = new (fStorage) SkDrawIter(canvas); |
| fDone = !fImpl->next(); |
| } |
| |
| SkCanvas::LayerIter::~LayerIter() { |
| fImpl->~SkDrawIter(); |
| } |
| |
| void SkCanvas::LayerIter::next() { |
| fDone = !fImpl->next(); |
| } |
| |
| SkBaseDevice* SkCanvas::LayerIter::device() const { |
| return fImpl->fDevice; |
| } |
| |
| const SkMatrix& SkCanvas::LayerIter::matrix() const { |
| return fImpl->fDevice->ctm(); |
| } |
| |
| const SkPaint& SkCanvas::LayerIter::paint() const { |
| const SkPaint* paint = fImpl->getPaint(); |
| if (nullptr == paint) { |
| paint = &fDefaultPaint; |
| } |
| return *paint; |
| } |
| |
| SkIRect SkCanvas::LayerIter::clipBounds() const { |
| return fImpl->fDevice->getGlobalBounds(); |
| } |
| |
| int SkCanvas::LayerIter::x() const { return fImpl->getX(); } |
| int SkCanvas::LayerIter::y() const { return fImpl->getY(); } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| std::unique_ptr<SkCanvas> SkCanvas::MakeRasterDirect(const SkImageInfo& info, void* pixels, |
| size_t rowBytes, const SkSurfaceProps* props) { |
| if (!SkSurfaceValidateRasterInfo(info, rowBytes)) { |
| return nullptr; |
| } |
| |
| SkBitmap bitmap; |
| if (!bitmap.installPixels(info, pixels, rowBytes)) { |
| return nullptr; |
| } |
| |
| return props ? |
| skstd::make_unique<SkCanvas>(bitmap, *props) : |
| skstd::make_unique<SkCanvas>(bitmap); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| SkNoDrawCanvas::SkNoDrawCanvas(int width, int height) |
| : INHERITED(SkIRect::MakeWH(width, height)) {} |
| |
| SkNoDrawCanvas::SkNoDrawCanvas(const SkIRect& bounds) |
| : INHERITED(bounds) {} |
| |
| SkNoDrawCanvas::SkNoDrawCanvas(sk_sp<SkBaseDevice> device) |
| : INHERITED(device) {} |
| |
| SkCanvas::SaveLayerStrategy SkNoDrawCanvas::getSaveLayerStrategy(const SaveLayerRec& rec) { |
| (void)this->INHERITED::getSaveLayerStrategy(rec); |
| return kNoLayer_SaveLayerStrategy; |
| } |
| |
| bool SkNoDrawCanvas::onDoSaveBehind(const SkRect*) { |
| return false; |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static_assert((int)SkRegion::kDifference_Op == (int)kDifference_SkClipOp, ""); |
| static_assert((int)SkRegion::kIntersect_Op == (int)kIntersect_SkClipOp, ""); |
| static_assert((int)SkRegion::kUnion_Op == (int)kUnion_SkClipOp, ""); |
| static_assert((int)SkRegion::kXOR_Op == (int)kXOR_SkClipOp, ""); |
| static_assert((int)SkRegion::kReverseDifference_Op == (int)kReverseDifference_SkClipOp, ""); |
| static_assert((int)SkRegion::kReplace_Op == (int)kReplace_SkClipOp, ""); |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| SkRasterHandleAllocator::Handle SkCanvas::accessTopRasterHandle() const { |
| if (fAllocator && fMCRec->fTopLayer->fDevice) { |
| const auto& dev = fMCRec->fTopLayer->fDevice; |
| SkRasterHandleAllocator::Handle handle = dev->getRasterHandle(); |
| SkIPoint origin = dev->getOrigin(); |
| SkMatrix ctm = this->getTotalMatrix(); |
| ctm.preTranslate(SkIntToScalar(-origin.x()), SkIntToScalar(-origin.y())); |
| |
| SkIRect clip = fMCRec->fRasterClip.getBounds(); |
| clip.offset(-origin.x(), -origin.y()); |
| if (!clip.intersect(0, 0, dev->width(), dev->height())) { |
| clip.setEmpty(); |
| } |
| |
| fAllocator->updateHandle(handle, ctm, clip); |
| return handle; |
| } |
| return nullptr; |
| } |
| |
| static bool install(SkBitmap* bm, const SkImageInfo& info, |
| const SkRasterHandleAllocator::Rec& rec) { |
| return bm->installPixels(info, rec.fPixels, rec.fRowBytes, rec.fReleaseProc, rec.fReleaseCtx); |
| } |
| |
| SkRasterHandleAllocator::Handle SkRasterHandleAllocator::allocBitmap(const SkImageInfo& info, |
| SkBitmap* bm) { |
| SkRasterHandleAllocator::Rec rec; |
| if (!this->allocHandle(info, &rec) || !install(bm, info, rec)) { |
| return nullptr; |
| } |
| return rec.fHandle; |
| } |
| |
| std::unique_ptr<SkCanvas> |
| SkRasterHandleAllocator::MakeCanvas(std::unique_ptr<SkRasterHandleAllocator> alloc, |
| const SkImageInfo& info, const Rec* rec) { |
| if (!alloc || !SkSurfaceValidateRasterInfo(info, rec ? rec->fRowBytes : kIgnoreRowBytesValue)) { |
| return nullptr; |
| } |
| |
| SkBitmap bm; |
| Handle hndl; |
| |
| if (rec) { |
| hndl = install(&bm, info, *rec) ? rec->fHandle : nullptr; |
| } else { |
| hndl = alloc->allocBitmap(info, &bm); |
| } |
| return hndl ? std::unique_ptr<SkCanvas>(new SkCanvas(bm, std::move(alloc), hndl)) : nullptr; |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| |