| /* |
| * 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 "SkBitmapDevice.h" |
| #include "SkCanvas.h" |
| #include "SkCanvasPriv.h" |
| #include "SkClipStack.h" |
| #include "SkColorFilter.h" |
| #include "SkDevice.h" |
| #include "SkDraw.h" |
| #include "SkDrawable.h" |
| #include "SkDrawFilter.h" |
| #include "SkDrawLooper.h" |
| #include "SkErrorInternals.h" |
| #include "SkImage.h" |
| #include "SkImage_Base.h" |
| #include "SkMatrixUtils.h" |
| #include "SkMetaData.h" |
| #include "SkNinePatchIter.h" |
| #include "SkPaintPriv.h" |
| #include "SkPatchUtils.h" |
| #include "SkPicture.h" |
| #include "SkRasterClip.h" |
| #include "SkReadPixelsRec.h" |
| #include "SkRRect.h" |
| #include "SkSmallAllocator.h" |
| #include "SkSurface_Base.h" |
| #include "SkTextBlob.h" |
| #include "SkTextFormatParams.h" |
| #include "SkTLazy.h" |
| #include "SkTraceEvent.h" |
| |
| #include <new> |
| |
| #if SK_SUPPORT_GPU |
| #include "GrContext.h" |
| #include "GrRenderTarget.h" |
| #include "SkGr.h" |
| #endif |
| |
| #define RETURN_ON_NULL(ptr) do { if (nullptr == (ptr)) 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 (!this->getClipStack()->quickContains(bounds)) { |
| return false; |
| } |
| |
| if (rect) { |
| if (!this->getTotalMatrix().rectStaysRect()) { |
| return false; // conservative |
| } |
| |
| SkRect devRect; |
| this->getTotalMatrix().mapRect(&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); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| static bool gIgnoreSaveLayerBounds; |
| void SkCanvas::Internal_Private_SetIgnoreSaveLayerBounds(bool ignore) { |
| gIgnoreSaveLayerBounds = ignore; |
| } |
| bool SkCanvas::Internal_Private_GetIgnoreSaveLayerBounds() { |
| return gIgnoreSaveLayerBounds; |
| } |
| |
| static bool gTreatSpriteAsBitmap; |
| void SkCanvas::Internal_Private_SetTreatSpriteAsBitmap(bool spriteAsBitmap) { |
| gTreatSpriteAsBitmap = spriteAsBitmap; |
| } |
| bool SkCanvas::Internal_Private_GetTreatSpriteAsBitmap() { |
| return gTreatSpriteAsBitmap; |
| } |
| |
| // experimental for faster tiled drawing... |
| //#define SK_ENABLE_CLIP_QUICKREJECT |
| //#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); |
| } |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static uint32_t filter_paint_flags(const SkSurfaceProps& props, uint32_t flags) { |
| const uint32_t propFlags = props.flags(); |
| if (propFlags & SkSurfaceProps::kDisallowDither_Flag) { |
| flags &= ~SkPaint::kDither_Flag; |
| } |
| if (propFlags & SkSurfaceProps::kDisallowAntiAlias_Flag) { |
| flags &= ~SkPaint::kAntiAlias_Flag; |
| } |
| return flags; |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| /* 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; |
| SkBaseDevice* fDevice; |
| SkRasterClip fClip; |
| SkPaint* fPaint; // may be null (in the future) |
| const SkMatrix* fMatrix; |
| SkMatrix fMatrixStorage; |
| const bool fDeviceIsBitmapDevice; |
| |
| DeviceCM(SkBaseDevice* device, const SkPaint* paint, SkCanvas* canvas, |
| bool conservativeRasterClip, bool deviceIsBitmapDevice) |
| : fNext(nullptr) |
| , fClip(conservativeRasterClip) |
| , fDeviceIsBitmapDevice(deviceIsBitmapDevice) |
| { |
| if (nullptr != device) { |
| device->ref(); |
| device->onAttachToCanvas(canvas); |
| } |
| fDevice = device; |
| fPaint = paint ? new SkPaint(*paint) : nullptr; |
| } |
| |
| ~DeviceCM() { |
| if (fDevice) { |
| fDevice->onDetachFromCanvas(); |
| fDevice->unref(); |
| } |
| delete fPaint; |
| } |
| |
| void reset(const SkIRect& bounds) { |
| SkASSERT(!fPaint); |
| SkASSERT(!fNext); |
| SkASSERT(fDevice); |
| fClip.setRect(bounds); |
| } |
| |
| void updateMC(const SkMatrix& totalMatrix, const SkRasterClip& totalClip, |
| const SkClipStack& clipStack, SkRasterClip* updateClip) { |
| int x = fDevice->getOrigin().x(); |
| int y = fDevice->getOrigin().y(); |
| int width = fDevice->width(); |
| int height = fDevice->height(); |
| |
| if ((x | y) == 0) { |
| fMatrix = &totalMatrix; |
| fClip = totalClip; |
| } else { |
| fMatrixStorage = totalMatrix; |
| fMatrixStorage.postTranslate(SkIntToScalar(-x), |
| SkIntToScalar(-y)); |
| fMatrix = &fMatrixStorage; |
| |
| totalClip.translate(-x, -y, &fClip); |
| } |
| |
| fClip.op(SkIRect::MakeWH(width, height), SkRegion::kIntersect_Op); |
| |
| // intersect clip, but don't translate it (yet) |
| |
| if (updateClip) { |
| updateClip->op(SkIRect::MakeXYWH(x, y, width, height), |
| SkRegion::kDifference_Op); |
| } |
| |
| fDevice->setMatrixClip(*fMatrix, fClip.forceGetBW(), clipStack); |
| |
| #ifdef SK_DEBUG |
| if (!fClip.isEmpty()) { |
| SkIRect deviceR; |
| deviceR.set(0, 0, width, height); |
| SkASSERT(deviceR.contains(fClip.getBounds())); |
| } |
| #endif |
| } |
| }; |
| |
| /* 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: |
| SkDrawFilter* fFilter; // the current filter (or null) |
| 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; |
| SkRasterClip fRasterClip; |
| SkMatrix fMatrix; |
| int fDeferredSaveCount; |
| |
| MCRec(bool conservativeRasterClip) : fRasterClip(conservativeRasterClip) { |
| fFilter = nullptr; |
| 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) { |
| fFilter = SkSafeRef(prev.fFilter); |
| fLayer = nullptr; |
| fTopLayer = prev.fTopLayer; |
| fDeferredSaveCount = 0; |
| |
| // don't bother initializing fNext |
| inc_rec(); |
| } |
| ~MCRec() { |
| SkSafeUnref(fFilter); |
| 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 SkDraw { |
| public: |
| SkDrawIter(SkCanvas* canvas, bool skipEmptyClips = true) { |
| canvas = canvas->canvasForDrawIter(); |
| fCanvas = canvas; |
| canvas->updateDeviceCMCache(); |
| |
| fClipStack = canvas->fClipStack; |
| fCurrLayer = canvas->fMCRec->fTopLayer; |
| fSkipEmptyClips = skipEmptyClips; |
| } |
| |
| bool next() { |
| // skip over recs with empty clips |
| if (fSkipEmptyClips) { |
| while (fCurrLayer && fCurrLayer->fClip.isEmpty()) { |
| fCurrLayer = fCurrLayer->fNext; |
| } |
| } |
| |
| const DeviceCM* rec = fCurrLayer; |
| if (rec && rec->fDevice) { |
| |
| fMatrix = rec->fMatrix; |
| fClip = &((SkRasterClip*)&rec->fClip)->forceGetBW(); |
| fRC = &rec->fClip; |
| fDevice = rec->fDevice; |
| if (!fDevice->accessPixels(&fDst)) { |
| fDst.reset(fDevice->imageInfo(), nullptr, 0); |
| } |
| fPaint = rec->fPaint; |
| SkDEBUGCODE(this->validate();) |
| |
| fCurrLayer = rec->fNext; |
| // fCurrLayer may be nullptr now |
| |
| return true; |
| } |
| return false; |
| } |
| |
| SkBaseDevice* getDevice() const { return fDevice; } |
| int getX() const { return fDevice->getOrigin().x(); } |
| int getY() const { return fDevice->getOrigin().y(); } |
| const SkMatrix& getMatrix() const { return *fMatrix; } |
| const SkRegion& getClip() const { return *fClip; } |
| const SkPaint* getPaint() const { return fPaint; } |
| |
| private: |
| SkCanvas* fCanvas; |
| const DeviceCM* fCurrLayer; |
| const SkPaint* fPaint; // May be null. |
| SkBool8 fSkipEmptyClips; |
| |
| typedef SkDraw INHERITED; |
| }; |
| |
| ///////////////////////////////////////////////////////////////////////////// |
| |
| 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 SkColorFilter* image_to_color_filter(const SkPaint& paint) { |
| SkImageFilter* imgf = paint.getImageFilter(); |
| if (!imgf) { |
| return nullptr; |
| } |
| |
| SkColorFilter* imgCF; |
| if (!imgf->asAColorFilter(&imgCF)) { |
| return nullptr; |
| } |
| |
| 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. |
| SkAutoTUnref<SkColorFilter> autoImgCF(imgCF); |
| return SkColorFilter::CreateComposeFilter(imgCF, 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 SkSurfaceProps& props, const SkPaint& paint, |
| bool skipLayerForImageFilter = false, |
| const SkRect* rawBounds = nullptr) : fOrigPaint(paint) { |
| fCanvas = canvas; |
| #ifdef SK_SUPPORT_LEGACY_DRAWFILTER |
| fFilter = canvas->getDrawFilter(); |
| #else |
| fFilter = nullptr; |
| #endif |
| fPaint = &fOrigPaint; |
| fSaveCount = canvas->getSaveCount(); |
| fTempLayerForImageFilter = false; |
| fDone = false; |
| |
| SkColorFilter* simplifiedCF = image_to_color_filter(fOrigPaint); |
| if (simplifiedCF) { |
| SkPaint* paint = set_if_needed(&fLazyPaintInit, fOrigPaint); |
| paint->setColorFilter(simplifiedCF)->unref(); |
| 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->getImageFilter()); |
| tmp.setXfermode(fPaint->getXfermode()); |
| 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()) { |
| void* buffer = fLooperContextAllocator.reserveT<SkDrawLooper::Context>( |
| looper->contextSize()); |
| fLooperContext = looper->createContext(canvas, buffer); |
| fIsSimple = false; |
| } else { |
| fLooperContext = nullptr; |
| // can we be marked as simple? |
| fIsSimple = !fFilter && !fTempLayerForImageFilter; |
| } |
| |
| uint32_t oldFlags = paint.getFlags(); |
| fNewPaintFlags = filter_paint_flags(props, oldFlags); |
| if (fIsSimple && (fNewPaintFlags != oldFlags)) { |
| SkPaint* paint = set_if_needed(&fLazyPaintInit, fOrigPaint); |
| paint->setFlags(fNewPaintFlags); |
| fPaint = paint; |
| // if we're not simple, doNext() will take care of calling setFlags() |
| } |
| } |
| |
| ~AutoDrawLooper() { |
| if (fTempLayerForImageFilter) { |
| fCanvas->internalRestore(); |
| } |
| SkASSERT(fCanvas->getSaveCount() == fSaveCount); |
| } |
| |
| const SkPaint& paint() const { |
| SkASSERT(fPaint); |
| return *fPaint; |
| } |
| |
| bool next(SkDrawFilter::Type drawType) { |
| if (fDone) { |
| return false; |
| } else if (fIsSimple) { |
| fDone = true; |
| return !fPaint->nothingToDraw(); |
| } else { |
| return this->doNext(drawType); |
| } |
| } |
| |
| 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; |
| SkDrawFilter* fFilter; |
| const SkPaint* fPaint; |
| int fSaveCount; |
| uint32_t fNewPaintFlags; |
| bool fTempLayerForImageFilter; |
| bool fDone; |
| bool fIsSimple; |
| SkDrawLooper::Context* fLooperContext; |
| SkSmallAllocator<1, 32> fLooperContextAllocator; |
| |
| bool doNext(SkDrawFilter::Type drawType); |
| }; |
| |
| bool AutoDrawLooper::doNext(SkDrawFilter::Type drawType) { |
| fPaint = nullptr; |
| SkASSERT(!fIsSimple); |
| SkASSERT(fLooperContext || fFilter || fTempLayerForImageFilter); |
| |
| SkPaint* paint = fLazyPaintPerLooper.set(fLazyPaintInit.isValid() ? |
| *fLazyPaintInit.get() : fOrigPaint); |
| paint->setFlags(fNewPaintFlags); |
| |
| if (fTempLayerForImageFilter) { |
| paint->setImageFilter(nullptr); |
| paint->setXfermode(nullptr); |
| } |
| |
| if (fLooperContext && !fLooperContext->next(fCanvas, paint)) { |
| fDone = true; |
| return false; |
| } |
| if (fFilter) { |
| if (!fFilter->filter(paint, drawType)) { |
| fDone = true; |
| return false; |
| } |
| if (nullptr == fLooperContext) { |
| // no looper means we only draw once |
| fDone = true; |
| } |
| } |
| fPaint = paint; |
| |
| // if we only came in here for the imagefilter, mark us as done |
| if (!fLooperContext && !fFilter) { |
| fDone = true; |
| } |
| |
| // call this after any possible paint modifiers |
| if (fPaint->nothingToDraw()) { |
| fPaint = nullptr; |
| return false; |
| } |
| return true; |
| } |
| |
| ////////// macros to place around the internal draw calls ////////////////// |
| |
| #define LOOPER_BEGIN_DRAWBITMAP(paint, skipLayerForFilter, bounds) \ |
| this->predrawNotify(); \ |
| AutoDrawLooper looper(this, fProps, paint, skipLayerForFilter, bounds); \ |
| while (looper.next(SkDrawFilter::kBitmap_Type)) { \ |
| SkDrawIter iter(this); |
| |
| |
| #define LOOPER_BEGIN_DRAWDEVICE(paint, type) \ |
| this->predrawNotify(); \ |
| AutoDrawLooper looper(this, fProps, paint, true); \ |
| while (looper.next(type)) { \ |
| SkDrawIter iter(this); |
| |
| #define LOOPER_BEGIN(paint, type, bounds) \ |
| this->predrawNotify(); \ |
| AutoDrawLooper looper(this, fProps, paint, false, bounds); \ |
| while (looper.next(type)) { \ |
| SkDrawIter iter(this); |
| |
| #define LOOPER_BEGIN_CHECK_COMPLETE_OVERWRITE(paint, type, bounds, auxOpaque) \ |
| this->predrawNotify(bounds, &paint, auxOpaque); \ |
| AutoDrawLooper looper(this, fProps, paint, false, bounds); \ |
| while (looper.next(type)) { \ |
| SkDrawIter iter(this); |
| |
| #define LOOPER_END } |
| |
| //////////////////////////////////////////////////////////////////////////// |
| |
| void SkCanvas::resetForNextPicture(const SkIRect& bounds) { |
| this->restoreToCount(1); |
| fCachedLocalClipBounds.setEmpty(); |
| fCachedLocalClipBoundsDirty = true; |
| fClipStack->reset(); |
| fMCRec->reset(bounds); |
| |
| // We're peering through a lot of structs here. Only at this scope do we |
| // know that the device is an SkBitmapDevice (really an SkNoPixelsBitmapDevice). |
| static_cast<SkBitmapDevice*>(fMCRec->fLayer->fDevice)->setNewSize(bounds.size()); |
| } |
| |
| SkBaseDevice* SkCanvas::init(SkBaseDevice* device, InitFlags flags) { |
| if (device && device->forceConservativeRasterClip()) { |
| flags = InitFlags(flags | kConservativeRasterClip_InitFlag); |
| } |
| // Since init() is only called once by our constructors, it is safe to perform this |
| // const-cast. |
| *const_cast<bool*>(&fConservativeRasterClip) = SkToBool(flags & kConservativeRasterClip_InitFlag); |
| |
| fCachedLocalClipBounds.setEmpty(); |
| fCachedLocalClipBoundsDirty = true; |
| fAllowSoftClip = true; |
| fAllowSimplifyClip = false; |
| fDeviceCMDirty = true; |
| fSaveCount = 1; |
| fMetaData = nullptr; |
| |
| fClipStack.reset(new SkClipStack); |
| |
| fMCRec = (MCRec*)fMCStack.push_back(); |
| new (fMCRec) MCRec(fConservativeRasterClip); |
| |
| SkASSERT(sizeof(DeviceCM) <= sizeof(fDeviceCMStorage)); |
| fMCRec->fLayer = (DeviceCM*)fDeviceCMStorage; |
| new (fDeviceCMStorage) DeviceCM(nullptr, nullptr, nullptr, fConservativeRasterClip, false); |
| |
| 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()); |
| device->onAttachToCanvas(this); |
| fMCRec->fLayer->fDevice = SkRef(device); |
| fMCRec->fRasterClip.setRect(device->getGlobalBounds()); |
| } |
| return device; |
| } |
| |
| SkCanvas::SkCanvas() |
| : fMCStack(sizeof(MCRec), fMCRecStorage, sizeof(fMCRecStorage)) |
| , fProps(SkSurfaceProps::kLegacyFontHost_InitType) |
| , fConservativeRasterClip(false) |
| { |
| inc_canvas(); |
| |
| this->init(nullptr, kDefault_InitFlags); |
| } |
| |
| static SkBitmap make_nopixels(int width, int height) { |
| SkBitmap bitmap; |
| bitmap.setInfo(SkImageInfo::MakeUnknown(width, height)); |
| return bitmap; |
| } |
| |
| class SkNoPixelsBitmapDevice : public SkBitmapDevice { |
| public: |
| SkNoPixelsBitmapDevice(const SkIRect& bounds, const SkSurfaceProps& surfaceProps) |
| : INHERITED(make_nopixels(bounds.width(), bounds.height()), surfaceProps) |
| { |
| this->setOrigin(bounds.x(), bounds.y()); |
| } |
| |
| private: |
| |
| typedef SkBitmapDevice INHERITED; |
| }; |
| |
| SkCanvas::SkCanvas(int width, int height, const SkSurfaceProps* props) |
| : fMCStack(sizeof(MCRec), fMCRecStorage, sizeof(fMCRecStorage)) |
| , fProps(SkSurfacePropsCopyOrDefault(props)) |
| , fConservativeRasterClip(false) |
| { |
| inc_canvas(); |
| |
| this->init(new SkNoPixelsBitmapDevice(SkIRect::MakeWH(width, height), fProps), |
| kDefault_InitFlags)->unref(); |
| } |
| |
| SkCanvas::SkCanvas(const SkIRect& bounds, InitFlags flags) |
| : fMCStack(sizeof(MCRec), fMCRecStorage, sizeof(fMCRecStorage)) |
| , fProps(SkSurfaceProps::kLegacyFontHost_InitType) |
| , fConservativeRasterClip(false) |
| { |
| inc_canvas(); |
| |
| this->init(new SkNoPixelsBitmapDevice(bounds, fProps), flags)->unref(); |
| } |
| |
| SkCanvas::SkCanvas(SkBaseDevice* device) |
| : fMCStack(sizeof(MCRec), fMCRecStorage, sizeof(fMCRecStorage)) |
| , fProps(device->surfaceProps()) |
| , fConservativeRasterClip(false) |
| { |
| inc_canvas(); |
| |
| this->init(device, kDefault_InitFlags); |
| } |
| |
| SkCanvas::SkCanvas(SkBaseDevice* device, InitFlags flags) |
| : fMCStack(sizeof(MCRec), fMCRecStorage, sizeof(fMCRecStorage)) |
| , fProps(device->surfaceProps()) |
| , fConservativeRasterClip(false) |
| { |
| inc_canvas(); |
| |
| this->init(device, flags); |
| } |
| |
| SkCanvas::SkCanvas(const SkBitmap& bitmap, const SkSurfaceProps& props) |
| : fMCStack(sizeof(MCRec), fMCRecStorage, sizeof(fMCRecStorage)) |
| , fProps(props) |
| , fConservativeRasterClip(false) |
| { |
| inc_canvas(); |
| |
| SkAutoTUnref<SkBaseDevice> device(new SkBitmapDevice(bitmap, fProps)); |
| this->init(device, kDefault_InitFlags); |
| } |
| |
| SkCanvas::SkCanvas(const SkBitmap& bitmap) |
| : fMCStack(sizeof(MCRec), fMCRecStorage, sizeof(fMCRecStorage)) |
| , fProps(SkSurfaceProps::kLegacyFontHost_InitType) |
| , fConservativeRasterClip(false) |
| { |
| inc_canvas(); |
| |
| SkAutoTUnref<SkBaseDevice> device(new SkBitmapDevice(bitmap, fProps)); |
| this->init(device, kDefault_InitFlags); |
| } |
| |
| 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(); |
| } |
| |
| #ifdef SK_SUPPORT_LEGACY_DRAWFILTER |
| SkDrawFilter* SkCanvas::getDrawFilter() const { |
| return fMCRec->fFilter; |
| } |
| |
| SkDrawFilter* SkCanvas::setDrawFilter(SkDrawFilter* filter) { |
| this->checkForDeferredSave(); |
| SkRefCnt_SafeAssign(fMCRec->fFilter, filter); |
| return filter; |
| } |
| #endif |
| |
| 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() { |
| 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; |
| } |
| |
| SkBaseDevice* SkCanvas::getTopDevice(bool updateMatrixClip) const { |
| if (updateMatrixClip) { |
| const_cast<SkCanvas*>(this)->updateDeviceCMCache(); |
| } |
| return fMCRec->fTopLayer->fDevice; |
| } |
| |
| bool SkCanvas::readPixels(SkBitmap* bitmap, int x, int y) { |
| if (kUnknown_SkColorType == bitmap->colorType() || bitmap->getTexture()) { |
| return false; |
| } |
| |
| bool weAllocated = false; |
| if (nullptr == bitmap->pixelRef()) { |
| if (!bitmap->tryAllocPixels()) { |
| return false; |
| } |
| weAllocated = true; |
| } |
| |
| SkAutoPixmapUnlock unlocker; |
| if (bitmap->requestLock(&unlocker)) { |
| const SkPixmap& pm = unlocker.pixmap(); |
| if (this->readPixels(pm.info(), pm.writable_addr(), pm.rowBytes(), x, y)) { |
| return true; |
| } |
| } |
| |
| if (weAllocated) { |
| bitmap->setPixelRef(nullptr); |
| } |
| return false; |
| } |
| |
| bool SkCanvas::readPixels(const SkIRect& srcRect, SkBitmap* bitmap) { |
| SkIRect r = srcRect; |
| const SkISize size = this->getBaseLayerSize(); |
| if (!r.intersect(0, 0, size.width(), size.height())) { |
| bitmap->reset(); |
| return false; |
| } |
| |
| if (!bitmap->tryAllocN32Pixels(r.width(), r.height())) { |
| // bitmap will already be reset. |
| return false; |
| } |
| if (!this->readPixels(bitmap->info(), bitmap->getPixels(), bitmap->rowBytes(), r.x(), r.y())) { |
| bitmap->reset(); |
| return false; |
| } |
| return true; |
| } |
| |
| bool SkCanvas::readPixels(const SkImageInfo& dstInfo, void* dstP, size_t rowBytes, int x, int y) { |
| SkBaseDevice* device = this->getDevice(); |
| if (!device) { |
| return false; |
| } |
| const SkISize size = this->getBaseLayerSize(); |
| |
| SkReadPixelsRec rec(dstInfo, dstP, rowBytes, x, y); |
| if (!rec.trim(size.width(), size.height())) { |
| return false; |
| } |
| |
| // The device can assert that the requested area is always contained in its bounds |
| return device->readPixels(rec.fInfo, rec.fPixels, rec.fRowBytes, rec.fX, rec.fY); |
| } |
| |
| bool SkCanvas::writePixels(const SkBitmap& bitmap, int x, int y) { |
| if (bitmap.getTexture()) { |
| return false; |
| } |
| |
| SkAutoPixmapUnlock unlocker; |
| if (bitmap.requestLock(&unlocker)) { |
| const SkPixmap& pm = unlocker.pixmap(); |
| return this->writePixels(pm.info(), pm.addr(), pm.rowBytes(), x, y); |
| } |
| return false; |
| } |
| |
| bool SkCanvas::writePixels(const SkImageInfo& origInfo, const void* pixels, size_t rowBytes, |
| int x, int y) { |
| switch (origInfo.colorType()) { |
| case kUnknown_SkColorType: |
| case kIndex_8_SkColorType: |
| return false; |
| default: |
| break; |
| } |
| if (nullptr == pixels || rowBytes < origInfo.minRowBytes()) { |
| return false; |
| } |
| |
| const SkISize size = this->getBaseLayerSize(); |
| SkIRect target = SkIRect::MakeXYWH(x, y, origInfo.width(), origInfo.height()); |
| if (!target.intersect(0, 0, size.width(), size.height())) { |
| return false; |
| } |
| |
| SkBaseDevice* device = this->getDevice(); |
| if (!device) { |
| return false; |
| } |
| |
| // the intersect may have shrunk info's logical size |
| const SkImageInfo info = origInfo.makeWH(target.width(), target.height()); |
| |
| // if x or y are negative, then we have to adjust pixels |
| if (x > 0) { |
| x = 0; |
| } |
| if (y > 0) { |
| y = 0; |
| } |
| // here x,y are either 0 or negative |
| pixels = ((const char*)pixels - y * rowBytes - x * info.bytesPerPixel()); |
| |
| // Tell our owning surface to bump its generation ID |
| const bool completeOverwrite = info.dimensions() == size; |
| this->predrawNotify(completeOverwrite); |
| |
| // The device can assert that the requested area is always contained in its bounds |
| return device->writePixels(info, pixels, rowBytes, target.x(), target.y()); |
| } |
| |
| SkCanvas* SkCanvas::canvasForDrawIter() { |
| return this; |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| void SkCanvas::updateDeviceCMCache() { |
| if (fDeviceCMDirty) { |
| const SkMatrix& totalMatrix = this->getTotalMatrix(); |
| const SkRasterClip& totalClip = fMCRec->fRasterClip; |
| DeviceCM* layer = fMCRec->fTopLayer; |
| |
| if (nullptr == layer->fNext) { // only one layer |
| layer->updateMC(totalMatrix, totalClip, *fClipStack, nullptr); |
| } else { |
| SkRasterClip clip(totalClip); |
| do { |
| layer->updateMC(totalMatrix, clip, *fClipStack, &clip); |
| } while ((layer = layer->fNext) != nullptr); |
| } |
| fDeviceCMDirty = false; |
| } |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| 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; |
| |
| fClipStack->save(); |
| } |
| |
| bool SkCanvas::BoundsAffectsClip(SaveLayerFlags saveLayerFlags) { |
| #ifdef SK_SUPPORT_LEGACY_CLIPTOLAYERFLAG |
| return !(saveLayerFlags & SkCanvas::kDontClipToLayer_PrivateSaveLayerFlag); |
| #else |
| return true; |
| #endif |
| } |
| |
| bool SkCanvas::clipRectBounds(const SkRect* bounds, SaveLayerFlags saveLayerFlags, |
| SkIRect* intersection, const SkImageFilter* imageFilter) { |
| SkIRect clipBounds; |
| if (!this->getClipDeviceBounds(&clipBounds)) { |
| return false; |
| } |
| |
| const SkMatrix& ctm = fMCRec->fMatrix; // this->getTotalMatrix() |
| |
| if (imageFilter) { |
| imageFilter->filterBounds(clipBounds, ctm, &clipBounds); |
| if (bounds && !imageFilter->canComputeFastBounds()) { |
| bounds = nullptr; |
| } |
| } |
| SkIRect ir; |
| if (bounds) { |
| SkRect r; |
| |
| ctm.mapRect(&r, *bounds); |
| r.roundOut(&ir); |
| // early exit if the layer's bounds are clipped out |
| if (!ir.intersect(clipBounds)) { |
| if (BoundsAffectsClip(saveLayerFlags)) { |
| fCachedLocalClipBoundsDirty = true; |
| fMCRec->fRasterClip.setEmpty(); |
| } |
| return false; |
| } |
| } else { // no user bounds, so just use the clip |
| ir = clipBounds; |
| } |
| SkASSERT(!ir.isEmpty()); |
| |
| if (BoundsAffectsClip(saveLayerFlags)) { |
| // Simplify the current clips since they will be applied properly during restore() |
| fCachedLocalClipBoundsDirty = true; |
| fClipStack->clipDevRect(ir, SkRegion::kReplace_Op); |
| fMCRec->fRasterClip.setRect(ir); |
| } |
| |
| if (intersection) { |
| *intersection = ir; |
| } |
| return true; |
| } |
| |
| |
| int SkCanvas::saveLayer(const SkRect* bounds, const SkPaint* paint) { |
| return this->saveLayer(SaveLayerRec(bounds, paint, 0)); |
| } |
| |
| int SkCanvas::saveLayerPreserveLCDTextRequests(const SkRect* bounds, const SkPaint* paint) { |
| return this->saveLayer(SaveLayerRec(bounds, paint, kPreserveLCDText_SaveLayerFlag)); |
| } |
| |
| int SkCanvas::saveLayer(const SaveLayerRec& origRec) { |
| SaveLayerRec rec(origRec); |
| if (gIgnoreSaveLayerBounds) { |
| rec.fBounds = nullptr; |
| } |
| SaveLayerStrategy strategy = this->getSaveLayerStrategy(rec); |
| fSaveCount += 1; |
| this->internalSaveLayer(rec, strategy); |
| return this->getSaveCount() - 1; |
| } |
| |
| static void draw_filter_into_device(SkBaseDevice* src, const SkImageFilter* filter, |
| SkBaseDevice* dst, const SkMatrix& ctm) { |
| |
| SkBitmap srcBM; |
| |
| #if SK_SUPPORT_GPU |
| GrRenderTarget* srcRT = src->accessRenderTarget(); |
| if (srcRT && !srcRT->asTexture() && dst->accessRenderTarget()) { |
| // When both the src & the dst are on the gpu but the src doesn't have a texture, |
| // we create a temporary texture for the draw. |
| // TODO: we should actually only copy the portion of the source needed to apply the image |
| // filter |
| GrContext* context = srcRT->getContext(); |
| SkAutoTUnref<GrTexture> tex(context->textureProvider()->createTexture(srcRT->desc(), |
| SkBudgeted::kYes)); |
| |
| context->copySurface(tex, srcRT); |
| |
| GrWrapTextureInBitmap(tex, src->width(), src->height(), src->isOpaque(), &srcBM); |
| } else |
| #endif |
| { |
| srcBM = src->accessBitmap(false); |
| } |
| |
| SkCanvas c(dst); |
| |
| SkAutoTUnref<SkImageFilter> localF(filter->newWithLocalMatrix(ctm)); |
| SkPaint p; |
| p.setImageFilter(localF); |
| const SkScalar x = SkIntToScalar(src->getOrigin().x()); |
| const SkScalar y = SkIntToScalar(src->getOrigin().y()); |
| c.drawBitmap(srcBM, x, y, &p); |
| } |
| |
| static SkImageInfo make_layer_info(const SkImageInfo& prev, int w, int h, bool isOpaque, |
| const SkPaint* paint) { |
| // need to force L32 for now if we have an image filter. Once filters support other colortypes |
| // e.g. sRGB or F16, we can remove this check |
| const bool hasImageFilter = paint && paint->getImageFilter(); |
| |
| SkAlphaType alphaType = isOpaque ? kOpaque_SkAlphaType : kPremul_SkAlphaType; |
| if ((prev.bytesPerPixel() < 4) || hasImageFilter) { |
| // force to L32 |
| return SkImageInfo::MakeN32(w, h, alphaType); |
| } else { |
| // keep the same characteristics as the prev |
| return SkImageInfo::Make(w, h, prev.colorType(), alphaType, prev.profileType()); |
| } |
| } |
| |
| void SkCanvas::internalSaveLayer(const SaveLayerRec& rec, SaveLayerStrategy strategy) { |
| const SkRect* bounds = rec.fBounds; |
| const SkPaint* paint = rec.fPaint; |
| SaveLayerFlags saveLayerFlags = rec.fSaveLayerFlags; |
| |
| #ifndef SK_SUPPORT_LEGACY_CLIPTOLAYERFLAG |
| saveLayerFlags &= ~kDontClipToLayer_PrivateSaveLayerFlag; |
| #endif |
| |
| // do this before we create the layer. We don't call the public save() since |
| // that would invoke a possibly overridden virtual |
| this->internalSave(); |
| |
| fDeviceCMDirty = true; |
| |
| SkIRect ir; |
| if (!this->clipRectBounds(bounds, saveLayerFlags, &ir, paint ? paint->getImageFilter() : nullptr)) { |
| return; |
| } |
| |
| // FIXME: do willSaveLayer() overriders returning kNoLayer_SaveLayerStrategy really care about |
| // the clipRectBounds() call above? |
| if (kNoLayer_SaveLayerStrategy == strategy) { |
| return; |
| } |
| |
| bool isOpaque = SkToBool(saveLayerFlags & kIsOpaque_SaveLayerFlag); |
| SkPixelGeometry geo = fProps.pixelGeometry(); |
| if (paint) { |
| // TODO: perhaps add a query to filters so we might preserve opaqueness... |
| if (paint->getImageFilter() || paint->getColorFilter()) { |
| isOpaque = false; |
| geo = kUnknown_SkPixelGeometry; |
| } |
| } |
| |
| SkBaseDevice* device = this->getTopDevice(); |
| if (nullptr == device) { |
| SkDebugf("Unable to find device for layer."); |
| return; |
| } |
| |
| SkImageInfo info = make_layer_info(device->imageInfo(), ir.width(), ir.height(), isOpaque, |
| paint); |
| |
| bool forceSpriteOnRestore = false; |
| { |
| const bool preserveLCDText = kOpaque_SkAlphaType == info.alphaType() || |
| (saveLayerFlags & kPreserveLCDText_SaveLayerFlag); |
| const SkBaseDevice::TileUsage usage = SkBaseDevice::kNever_TileUsage; |
| const SkBaseDevice::CreateInfo createInfo = SkBaseDevice::CreateInfo(info, usage, geo, |
| preserveLCDText, false); |
| SkBaseDevice* newDev = device->onCreateDevice(createInfo, paint); |
| if (nullptr == newDev) { |
| // If onCreateDevice didn't succeed, try raster (e.g. PDF couldn't handle the paint) |
| const SkSurfaceProps surfaceProps(fProps.flags(), createInfo.fPixelGeometry); |
| newDev = SkBitmapDevice::Create(createInfo.fInfo, surfaceProps); |
| if (nullptr == newDev) { |
| SkErrorInternals::SetError(kInternalError_SkError, |
| "Unable to create device for layer."); |
| return; |
| } |
| forceSpriteOnRestore = true; |
| } |
| device = newDev; |
| } |
| device->setOrigin(ir.fLeft, ir.fTop); |
| |
| if (rec.fBackdrop) { |
| draw_filter_into_device(fMCRec->fTopLayer->fDevice, rec.fBackdrop, device, fMCRec->fMatrix); |
| } |
| |
| DeviceCM* layer = |
| new DeviceCM(device, paint, this, fConservativeRasterClip, forceSpriteOnRestore); |
| device->unref(); |
| |
| layer->fNext = fMCRec->fTopLayer; |
| fMCRec->fLayer = layer; |
| fMCRec->fTopLayer = layer; // this field is NOT an owner of layer |
| } |
| |
| 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::internalRestore() { |
| SkASSERT(fMCStack.count() != 0); |
| |
| fDeviceCMDirty = true; |
| fCachedLocalClipBoundsDirty = true; |
| |
| fClipStack->restore(); |
| |
| // 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; |
| |
| // now do the normal restore() |
| fMCRec->~MCRec(); // balanced in save() |
| fMCStack.pop_back(); |
| fMCRec = (MCRec*)fMCStack.back(); |
| |
| /* 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 (layer->fNext) { |
| const SkIPoint& origin = layer->fDevice->getOrigin(); |
| this->internalDrawDevice(layer->fDevice, origin.x(), origin.y(), |
| layer->fPaint, layer->fDeviceIsBitmapDevice); |
| // reset this, since internalDrawDevice will have set it to true |
| fDeviceCMDirty = true; |
| delete layer; |
| } else { |
| // we're at the root |
| SkASSERT(layer == (void*)fDeviceCMStorage); |
| layer->~DeviceCM(); |
| } |
| } |
| } |
| |
| SkSurface* SkCanvas::newSurface(const SkImageInfo& info, const SkSurfaceProps* props) { |
| if (nullptr == props) { |
| props = &fProps; |
| } |
| return this->onNewSurface(info, *props); |
| } |
| |
| SkSurface* SkCanvas::onNewSurface(const SkImageInfo& info, const SkSurfaceProps& props) { |
| SkBaseDevice* dev = this->getDevice(); |
| return dev ? dev->newSurface(info, props) : nullptr; |
| } |
| |
| SkImageInfo SkCanvas::imageInfo() const { |
| SkBaseDevice* dev = this->getDevice(); |
| if (dev) { |
| return dev->imageInfo(); |
| } else { |
| return SkImageInfo::MakeUnknown(0, 0); |
| } |
| } |
| |
| const void* SkCanvas::peekPixels(SkImageInfo* info, size_t* rowBytes) { |
| SkPixmap pmap; |
| if (!this->onPeekPixels(&pmap)) { |
| return nullptr; |
| } |
| if (info) { |
| *info = pmap.info(); |
| } |
| if (rowBytes) { |
| *rowBytes = pmap.rowBytes(); |
| } |
| return pmap.addr(); |
| } |
| |
| 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(false)->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, bool deviceIsBitmapDevice) { |
| SkPaint tmp; |
| if (nullptr == paint) { |
| paint = &tmp; |
| } |
| |
| LOOPER_BEGIN_DRAWDEVICE(*paint, SkDrawFilter::kBitmap_Type) |
| while (iter.next()) { |
| SkBaseDevice* dstDev = iter.fDevice; |
| paint = &looper.paint(); |
| SkImageFilter* filter = paint->getImageFilter(); |
| SkIPoint pos = { x - iter.getX(), y - iter.getY() }; |
| if (filter && !dstDev->canHandleImageFilter(filter)) { |
| SkImageFilter::DeviceProxy proxy(dstDev); |
| SkBitmap dst; |
| SkIPoint offset = SkIPoint::Make(0, 0); |
| const SkBitmap& src = srcDev->accessBitmap(false); |
| SkMatrix matrix = *iter.fMatrix; |
| matrix.postTranslate(SkIntToScalar(-pos.x()), SkIntToScalar(-pos.y())); |
| SkIRect clipBounds = iter.fClip->getBounds().makeOffset(-pos.x(), -pos.y()); |
| SkAutoTUnref<SkImageFilter::Cache> cache(dstDev->getImageFilterCache()); |
| SkImageFilter::Context ctx(matrix, clipBounds, cache.get()); |
| if (filter->filterImageDeprecated(&proxy, src, ctx, &dst, &offset)) { |
| SkPaint tmpUnfiltered(*paint); |
| tmpUnfiltered.setImageFilter(nullptr); |
| dstDev->drawSprite(iter, dst, pos.x() + offset.x(), pos.y() + offset.y(), |
| tmpUnfiltered); |
| } |
| } else if (deviceIsBitmapDevice) { |
| const SkBitmap& src = static_cast<SkBitmapDevice*>(srcDev)->fBitmap; |
| dstDev->drawSprite(iter, src, pos.x(), pos.y(), *paint); |
| } else { |
| dstDev->drawDevice(iter, srcDev, pos.x(), pos.y(), *paint); |
| } |
| } |
| LOOPER_END |
| } |
| |
| ///////////////////////////////////////////////////////////////////////////// |
| |
| void SkCanvas::translate(SkScalar dx, SkScalar dy) { |
| SkMatrix m; |
| m.setTranslate(dx, dy); |
| this->concat(m); |
| } |
| |
| 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::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(); |
| fDeviceCMDirty = true; |
| fCachedLocalClipBoundsDirty = true; |
| fMCRec->fMatrix.preConcat(matrix); |
| |
| this->didConcat(matrix); |
| } |
| |
| void SkCanvas::setMatrix(const SkMatrix& matrix) { |
| this->checkForDeferredSave(); |
| fDeviceCMDirty = true; |
| fCachedLocalClipBoundsDirty = true; |
| fMCRec->fMatrix = matrix; |
| this->didSetMatrix(matrix); |
| } |
| |
| void SkCanvas::resetMatrix() { |
| SkMatrix matrix; |
| |
| matrix.reset(); |
| this->setMatrix(matrix); |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| void SkCanvas::clipRect(const SkRect& rect, SkRegion::Op op, bool doAA) { |
| this->checkForDeferredSave(); |
| ClipEdgeStyle edgeStyle = doAA ? kSoft_ClipEdgeStyle : kHard_ClipEdgeStyle; |
| this->onClipRect(rect, op, edgeStyle); |
| } |
| |
| void SkCanvas::onClipRect(const SkRect& rect, SkRegion::Op op, ClipEdgeStyle edgeStyle) { |
| #ifdef SK_ENABLE_CLIP_QUICKREJECT |
| if (SkRegion::kIntersect_Op == op) { |
| if (fMCRec->fRasterClip.isEmpty()) { |
| return false; |
| } |
| |
| if (this->quickReject(rect)) { |
| fDeviceCMDirty = true; |
| fCachedLocalClipBoundsDirty = true; |
| |
| fClipStack->clipEmpty(); |
| return fMCRec->fRasterClip.setEmpty(); |
| } |
| } |
| #endif |
| |
| if (!fAllowSoftClip) { |
| edgeStyle = kHard_ClipEdgeStyle; |
| } |
| |
| const bool rectStaysRect = fMCRec->fMatrix.rectStaysRect(); |
| SkRect devR; |
| if (rectStaysRect) { |
| fMCRec->fMatrix.mapRect(&devR, rect); |
| } |
| |
| // Check if we can quick-accept the clip call (and do nothing) |
| // |
| // TODO: investigate if a (conservative) version of this could be done in ::clipRect, |
| // so that subclasses (like PictureRecording) didn't see unnecessary clips, which in turn |
| // might allow lazy save/restores to eliminate entire save/restore blocks. |
| // |
| if (SkRegion::kIntersect_Op == op && |
| kHard_ClipEdgeStyle == edgeStyle |
| && rectStaysRect) |
| { |
| if (devR.round().contains(fMCRec->fRasterClip.getBounds())) { |
| #if 0 |
| SkDebugf("------- ignored clipRect [%g %g %g %g]\n", |
| rect.left(), rect.top(), rect.right(), rect.bottom()); |
| #endif |
| return; |
| } |
| } |
| |
| AutoValidateClip avc(this); |
| |
| fDeviceCMDirty = true; |
| fCachedLocalClipBoundsDirty = true; |
| |
| if (rectStaysRect) { |
| const bool isAA = kSoft_ClipEdgeStyle == edgeStyle; |
| fClipStack->clipDevRect(devR, op, isAA); |
| fMCRec->fRasterClip.op(devR, this->getTopLayerBounds(), op, isAA); |
| } else { |
| // since we're rotated or some such thing, we convert the rect to a path |
| // and clip against that, since it can handle any matrix. However, to |
| // avoid recursion in the case where we are subclassed (e.g. Pictures) |
| // we explicitly call "our" version of clipPath. |
| SkPath path; |
| |
| path.addRect(rect); |
| this->SkCanvas::onClipPath(path, op, edgeStyle); |
| } |
| } |
| |
| void SkCanvas::clipRRect(const SkRRect& rrect, SkRegion::Op 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, SkRegion::Op op, ClipEdgeStyle edgeStyle) { |
| SkRRect transformedRRect; |
| if (rrect.transform(fMCRec->fMatrix, &transformedRRect)) { |
| AutoValidateClip avc(this); |
| |
| fDeviceCMDirty = true; |
| fCachedLocalClipBoundsDirty = true; |
| if (!fAllowSoftClip) { |
| edgeStyle = kHard_ClipEdgeStyle; |
| } |
| |
| fClipStack->clipDevRRect(transformedRRect, op, kSoft_ClipEdgeStyle == edgeStyle); |
| |
| fMCRec->fRasterClip.op(transformedRRect, this->getTopLayerBounds(), op, |
| kSoft_ClipEdgeStyle == edgeStyle); |
| return; |
| } |
| |
| SkPath path; |
| path.addRRect(rrect); |
| // call the non-virtual version |
| this->SkCanvas::onClipPath(path, op, edgeStyle); |
| } |
| |
| void SkCanvas::clipPath(const SkPath& path, SkRegion::Op 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, SkRegion::Op op, ClipEdgeStyle edgeStyle) { |
| #ifdef SK_ENABLE_CLIP_QUICKREJECT |
| if (SkRegion::kIntersect_Op == op && !path.isInverseFillType()) { |
| if (fMCRec->fRasterClip.isEmpty()) { |
| return false; |
| } |
| |
| if (this->quickReject(path.getBounds())) { |
| fDeviceCMDirty = true; |
| fCachedLocalClipBoundsDirty = true; |
| |
| fClipStack->clipEmpty(); |
| return fMCRec->fRasterClip.setEmpty(); |
| } |
| } |
| #endif |
| |
| AutoValidateClip avc(this); |
| |
| fDeviceCMDirty = true; |
| fCachedLocalClipBoundsDirty = true; |
| if (!fAllowSoftClip) { |
| edgeStyle = kHard_ClipEdgeStyle; |
| } |
| |
| SkPath devPath; |
| path.transform(fMCRec->fMatrix, &devPath); |
| |
| // Check if the transfomation, or the original path itself |
| // made us empty. Note this can also happen if we contained NaN |
| // values. computing the bounds detects this, and will set our |
| // bounds to empty if that is the case. (see SkRect::set(pts, count)) |
| if (devPath.getBounds().isEmpty()) { |
| // resetting the path will remove any NaN or other wanky values |
| // that might upset our scan converter. |
| devPath.reset(); |
| } |
| |
| // if we called path.swap() we could avoid a deep copy of this path |
| fClipStack->clipDevPath(devPath, op, kSoft_ClipEdgeStyle == edgeStyle); |
| |
| if (fAllowSimplifyClip) { |
| bool clipIsAA = getClipStack()->asPath(&devPath); |
| if (clipIsAA) { |
| edgeStyle = kSoft_ClipEdgeStyle; |
| } |
| |
| op = SkRegion::kReplace_Op; |
| } |
| |
| fMCRec->fRasterClip.op(devPath, this->getTopLayerBounds(), op, edgeStyle); |
| } |
| |
| void SkCanvas::clipRegion(const SkRegion& rgn, SkRegion::Op op) { |
| this->checkForDeferredSave(); |
| this->onClipRegion(rgn, op); |
| } |
| |
| void SkCanvas::onClipRegion(const SkRegion& rgn, SkRegion::Op op) { |
| AutoValidateClip avc(this); |
| |
| fDeviceCMDirty = true; |
| fCachedLocalClipBoundsDirty = true; |
| |
| // todo: signal fClipStack that we have a region, and therefore (I guess) |
| // we have to ignore it, and use the region directly? |
| fClipStack->clipDevRect(rgn.getBounds(), op); |
| |
| fMCRec->fRasterClip.op(rgn, op); |
| } |
| |
| #ifdef SK_DEBUG |
| void SkCanvas::validateClip() const { |
| // construct clipRgn from the clipstack |
| const SkBaseDevice* device = this->getDevice(); |
| if (!device) { |
| SkASSERT(this->isClipEmpty()); |
| return; |
| } |
| |
| SkIRect ir; |
| ir.set(0, 0, device->width(), device->height()); |
| SkRasterClip tmpClip(ir, fConservativeRasterClip); |
| |
| SkClipStack::B2TIter iter(*fClipStack); |
| const SkClipStack::Element* element; |
| while ((element = iter.next()) != nullptr) { |
| switch (element->getType()) { |
| case SkClipStack::Element::kRect_Type: |
| element->getRect().round(&ir); |
| tmpClip.op(ir, element->getOp()); |
| break; |
| case SkClipStack::Element::kEmpty_Type: |
| tmpClip.setEmpty(); |
| break; |
| default: { |
| SkPath path; |
| element->asPath(&path); |
| tmpClip.op(path, this->getTopLayerBounds(), element->getOp(), element->isAA()); |
| break; |
| } |
| } |
| } |
| } |
| #endif |
| |
| void SkCanvas::replayClips(ClipVisitor* visitor) const { |
| SkClipStack::B2TIter iter(*fClipStack); |
| const SkClipStack::Element* element; |
| |
| while ((element = iter.next()) != nullptr) { |
| element->replay(visitor); |
| } |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| bool SkCanvas::isClipEmpty() const { |
| return fMCRec->fRasterClip.isEmpty(); |
| } |
| |
| bool SkCanvas::isClipRect() const { |
| return fMCRec->fRasterClip.isRect(); |
| } |
| |
| bool SkCanvas::quickReject(const SkRect& rect) const { |
| if (!rect.isFinite()) |
| return true; |
| |
| if (fMCRec->fRasterClip.isEmpty()) { |
| return true; |
| } |
| |
| if (fMCRec->fMatrix.hasPerspective()) { |
| SkRect dst; |
| fMCRec->fMatrix.mapRect(&dst, rect); |
| return !SkIRect::Intersects(dst.roundOut(), fMCRec->fRasterClip.getBounds()); |
| } else { |
| const SkRect& clipR = this->getLocalClipBounds(); |
| |
| // for speed, do the most likely reject compares first |
| // TODO: should we use | instead, or compare all 4 at once? |
| if (rect.fTop >= clipR.fBottom || rect.fBottom <= clipR.fTop) { |
| return true; |
| } |
| if (rect.fLeft >= clipR.fRight || rect.fRight <= clipR.fLeft) { |
| return true; |
| } |
| return false; |
| } |
| } |
| |
| bool SkCanvas::quickReject(const SkPath& path) const { |
| return path.isEmpty() || this->quickReject(path.getBounds()); |
| } |
| |
| bool SkCanvas::getClipBounds(SkRect* bounds) const { |
| SkIRect ibounds; |
| if (!this->getClipDeviceBounds(&ibounds)) { |
| return false; |
| } |
| |
| SkMatrix inverse; |
| // if we can't invert the CTM, we can't return local clip bounds |
| if (!fMCRec->fMatrix.invert(&inverse)) { |
| if (bounds) { |
| bounds->setEmpty(); |
| } |
| return false; |
| } |
| |
| if (bounds) { |
| SkRect r; |
| // adjust it outwards in case we are antialiasing |
| const int inset = 1; |
| |
| r.iset(ibounds.fLeft - inset, ibounds.fTop - inset, |
| ibounds.fRight + inset, ibounds.fBottom + inset); |
| inverse.mapRect(bounds, r); |
| } |
| return true; |
| } |
| |
| bool SkCanvas::getClipDeviceBounds(SkIRect* bounds) const { |
| const SkRasterClip& clip = fMCRec->fRasterClip; |
| if (clip.isEmpty()) { |
| if (bounds) { |
| bounds->setEmpty(); |
| } |
| return false; |
| } |
| |
| if (bounds) { |
| *bounds = clip.getBounds(); |
| } |
| return true; |
| } |
| |
| const SkMatrix& SkCanvas::getTotalMatrix() const { |
| return fMCRec->fMatrix; |
| } |
| |
| const SkRegion& SkCanvas::internal_private_getTotalClip() const { |
| return fMCRec->fRasterClip.forceGetBW(); |
| } |
| |
| GrRenderTarget* SkCanvas::internal_private_accessTopLayerRenderTarget() { |
| SkBaseDevice* dev = this->getTopDevice(); |
| return dev ? dev->accessRenderTarget() : nullptr; |
| } |
| |
| GrContext* SkCanvas::getGrContext() { |
| #if SK_SUPPORT_GPU |
| SkBaseDevice* device = this->getTopDevice(); |
| if (device) { |
| GrRenderTarget* renderTarget = device->accessRenderTarget(); |
| if (renderTarget) { |
| return renderTarget->getContext(); |
| } |
| } |
| #endif |
| |
| return nullptr; |
| |
| } |
| |
| void SkCanvas::drawDRRect(const SkRRect& outer, const SkRRect& inner, |
| const SkPaint& paint) { |
| TRACE_EVENT0("disabled-by-default-skia", "SkCanvas::drawDRRect()"); |
| 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 assert... |
| // SkASSERT(outer.contains(inner)); |
| // |
| // For now at least check for containment of bounds |
| SkASSERT(outer.getBounds().contains(inner.getBounds())); |
| |
| this->onDrawDRRect(outer, inner, paint); |
| } |
| |
| // These need to stop being virtual -- clients need to override the onDraw... versions |
| |
| void SkCanvas::drawPaint(const SkPaint& paint) { |
| this->onDrawPaint(paint); |
| } |
| |
| void SkCanvas::drawRect(const SkRect& r, const SkPaint& paint) { |
| this->onDrawRect(r, paint); |
| } |
| |
| void SkCanvas::drawOval(const SkRect& r, const SkPaint& paint) { |
| this->onDrawOval(r, paint); |
| } |
| |
| void SkCanvas::drawRRect(const SkRRect& rrect, const SkPaint& paint) { |
| this->onDrawRRect(rrect, paint); |
| } |
| |
| void SkCanvas::drawPoints(PointMode mode, size_t count, const SkPoint pts[], const SkPaint& paint) { |
| this->onDrawPoints(mode, count, pts, paint); |
| } |
| |
| void SkCanvas::drawVertices(VertexMode vmode, int vertexCount, const SkPoint vertices[], |
| const SkPoint texs[], const SkColor colors[], SkXfermode* xmode, |
| const uint16_t indices[], int indexCount, const SkPaint& paint) { |
| this->onDrawVertices(vmode, vertexCount, vertices, texs, colors, xmode, |
| indices, indexCount, paint); |
| } |
| |
| void SkCanvas::drawPath(const SkPath& path, const SkPaint& paint) { |
| this->onDrawPath(path, paint); |
| } |
| |
| void SkCanvas::drawImage(const SkImage* image, SkScalar x, SkScalar y, const SkPaint* paint) { |
| RETURN_ON_NULL(image); |
| this->onDrawImage(image, x, y, paint); |
| } |
| |
| void SkCanvas::drawImageRect(const SkImage* image, const SkRect& src, const SkRect& dst, |
| const SkPaint* paint, SrcRectConstraint constraint) { |
| RETURN_ON_NULL(image); |
| if (dst.isEmpty() || src.isEmpty()) { |
| 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, |
| SrcRectConstraint constraint) { |
| RETURN_ON_NULL(image); |
| this->drawImageRect(image, SkRect::MakeIWH(image->width(), image->height()), dst, paint, |
| constraint); |
| } |
| |
| void SkCanvas::drawImageNine(const SkImage* image, const SkIRect& center, const SkRect& dst, |
| const SkPaint* paint) { |
| RETURN_ON_NULL(image); |
| if (dst.isEmpty()) { |
| return; |
| } |
| if (!SkNinePatchIter::Valid(image->width(), image->height(), center)) { |
| this->drawImageRect(image, dst, paint); |
| } |
| this->onDrawImageNine(image, center, dst, paint); |
| } |
| |
| void SkCanvas::drawBitmap(const SkBitmap& bitmap, SkScalar dx, SkScalar dy, const SkPaint* paint) { |
| 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) { |
| 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) { |
| if (bitmap.drawsNothing() || dst.isEmpty()) { |
| return; |
| } |
| if (!SkNinePatchIter::Valid(bitmap.width(), bitmap.height(), center)) { |
| this->drawBitmapRect(bitmap, dst, paint); |
| } |
| this->onDrawBitmapNine(bitmap, center, dst, paint); |
| } |
| |
| void SkCanvas::drawAtlas(const SkImage* atlas, const SkRSXform xform[], const SkRect tex[], |
| const SkColor colors[], int count, SkXfermode::Mode mode, |
| const SkRect* cull, const SkPaint* paint) { |
| RETURN_ON_NULL(atlas); |
| if (count <= 0) { |
| return; |
| } |
| SkASSERT(atlas); |
| SkASSERT(xform); |
| SkASSERT(tex); |
| this->onDrawAtlas(atlas, xform, tex, colors, count, mode, cull, paint); |
| } |
| |
| void SkCanvas::drawAnnotation(const SkRect& rect, const char key[], SkData* value) { |
| 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); |
| } |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| // These are the virtual drawing methods |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| void SkCanvas::onDiscard() { |
| if (fSurfaceBase) { |
| fSurfaceBase->aboutToDraw(SkSurface::kDiscard_ContentChangeMode); |
| } |
| } |
| |
| void SkCanvas::onDrawPaint(const SkPaint& paint) { |
| TRACE_EVENT0("disabled-by-default-skia", "SkCanvas::drawPaint()"); |
| this->internalDrawPaint(paint); |
| } |
| |
| void SkCanvas::internalDrawPaint(const SkPaint& paint) { |
| LOOPER_BEGIN_CHECK_COMPLETE_OVERWRITE(paint, SkDrawFilter::kPaint_Type, nullptr, false) |
| |
| while (iter.next()) { |
| iter.fDevice->drawPaint(iter, looper.paint()); |
| } |
| |
| LOOPER_END |
| } |
| |
| void SkCanvas::onDrawPoints(PointMode mode, size_t count, const SkPoint pts[], |
| const SkPaint& paint) { |
| TRACE_EVENT1("disabled-by-default-skia", "SkCanvas::drawPoints()", "count", static_cast<uint64_t>(count)); |
| if ((long)count <= 0) { |
| return; |
| } |
| |
| SkRect r, storage; |
| 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 (this->quickReject(paint.computeFastStrokeBounds(r, &storage))) { |
| return; |
| } |
| bounds = &r; |
| } |
| |
| SkASSERT(pts != nullptr); |
| |
| LOOPER_BEGIN(paint, SkDrawFilter::kPoint_Type, bounds) |
| |
| while (iter.next()) { |
| iter.fDevice->drawPoints(iter, mode, count, pts, looper.paint()); |
| } |
| |
| LOOPER_END |
| } |
| |
| void SkCanvas::onDrawRect(const SkRect& r, const SkPaint& paint) { |
| TRACE_EVENT0("disabled-by-default-skia", "SkCanvas::drawRect()"); |
| SkRect storage; |
| const SkRect* bounds = nullptr; |
| if (paint.canComputeFastBounds()) { |
| // Skia will draw an inverted rect, because it explicitly "sorts" it downstream. |
| // To prevent accidental rejecting at this stage, we have to sort it before we check. |
| SkRect tmp(r); |
| tmp.sort(); |
| |
| if (this->quickReject(paint.computeFastBounds(tmp, &storage))) { |
| return; |
| } |
| bounds = &r; |
| } |
| |
| LOOPER_BEGIN_CHECK_COMPLETE_OVERWRITE(paint, SkDrawFilter::kRect_Type, bounds, false) |
| |
| while (iter.next()) { |
| iter.fDevice->drawRect(iter, r, looper.paint()); |
| } |
| |
| LOOPER_END |
| } |
| |
| void SkCanvas::onDrawOval(const SkRect& oval, const SkPaint& paint) { |
| TRACE_EVENT0("disabled-by-default-skia", "SkCanvas::drawOval()"); |
| SkRect storage; |
| const SkRect* bounds = nullptr; |
| if (paint.canComputeFastBounds()) { |
| if (this->quickReject(paint.computeFastBounds(oval, &storage))) { |
| return; |
| } |
| bounds = &oval; |
| } |
| |
| LOOPER_BEGIN(paint, SkDrawFilter::kOval_Type, bounds) |
| |
| while (iter.next()) { |
| iter.fDevice->drawOval(iter, oval, looper.paint()); |
| } |
| |
| LOOPER_END |
| } |
| |
| void SkCanvas::onDrawRRect(const SkRRect& rrect, const SkPaint& paint) { |
| TRACE_EVENT0("disabled-by-default-skia", "SkCanvas::drawRRect()"); |
| SkRect storage; |
| const SkRect* bounds = nullptr; |
| if (paint.canComputeFastBounds()) { |
| if (this->quickReject(paint.computeFastBounds(rrect.getBounds(), &storage))) { |
| return; |
| } |
| bounds = &rrect.getBounds(); |
| } |
| |
| 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, SkDrawFilter::kRRect_Type, bounds) |
| |
| while (iter.next()) { |
| iter.fDevice->drawRRect(iter, rrect, looper.paint()); |
| } |
| |
| LOOPER_END |
| } |
| |
| void SkCanvas::onDrawDRRect(const SkRRect& outer, const SkRRect& inner, |
| const SkPaint& paint) { |
| SkRect storage; |
| const SkRect* bounds = nullptr; |
| if (paint.canComputeFastBounds()) { |
| if (this->quickReject(paint.computeFastBounds(outer.getBounds(), &storage))) { |
| return; |
| } |
| bounds = &outer.getBounds(); |
| } |
| |
| LOOPER_BEGIN(paint, SkDrawFilter::kRRect_Type, bounds) |
| |
| while (iter.next()) { |
| iter.fDevice->drawDRRect(iter, outer, inner, looper.paint()); |
| } |
| |
| LOOPER_END |
| } |
| |
| void SkCanvas::onDrawPath(const SkPath& path, const SkPaint& paint) { |
| TRACE_EVENT0("disabled-by-default-skia", "SkCanvas::drawPath()"); |
| if (!path.isFinite()) { |
| return; |
| } |
| |
| SkRect storage; |
| const SkRect* bounds = nullptr; |
| if (!path.isInverseFillType() && paint.canComputeFastBounds()) { |
| const SkRect& pathBounds = path.getBounds(); |
| if (this->quickReject(paint.computeFastBounds(pathBounds, &storage))) { |
| return; |
| } |
| bounds = &pathBounds; |
| } |
| |
| const SkRect& r = path.getBounds(); |
| if (r.width() <= 0 && r.height() <= 0) { |
| if (path.isInverseFillType()) { |
| this->internalDrawPaint(paint); |
| return; |
| } |
| } |
| |
| LOOPER_BEGIN(paint, SkDrawFilter::kPath_Type, bounds) |
| |
| while (iter.next()) { |
| iter.fDevice->drawPath(iter, 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()); |
| } |
| |
| void SkCanvas::onDrawImage(const SkImage* image, SkScalar x, SkScalar y, const SkPaint* paint) { |
| TRACE_EVENT0("disabled-by-default-skia", "SkCanvas::drawImage()"); |
| 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; |
| } |
| } |
| |
| SkLazyPaint lazy; |
| if (nullptr == paint) { |
| paint = lazy.init(); |
| } |
| |
| bool drawAsSprite = this->canDrawBitmapAsSprite(x, y, image->width(), image->height(), |
| *paint); |
| if (drawAsSprite && paint->getImageFilter()) { |
| SkBitmap bitmap; |
| if (!as_IB(image)->asBitmapForImageFilters(&bitmap)) { |
| drawAsSprite = false; |
| } else{ |
| // Until imagefilters are updated, they cannot handle any src type but N32... |
| if (bitmap.info().colorType() != kN32_SkColorType || bitmap.info().isSRGB()) { |
| drawAsSprite = false; |
| } |
| } |
| } |
| |
| LOOPER_BEGIN_DRAWBITMAP(*paint, drawAsSprite, &bounds) |
| |
| while (iter.next()) { |
| const SkPaint& pnt = looper.paint(); |
| if (drawAsSprite && pnt.getImageFilter()) { |
| SkBitmap bitmap; |
| if (as_IB(image)->asBitmapForImageFilters(&bitmap)) { |
| SkPoint pt; |
| iter.fMatrix->mapXY(x, y, &pt); |
| iter.fDevice->drawBitmapAsSprite(iter, bitmap, |
| SkScalarRoundToInt(pt.fX), |
| SkScalarRoundToInt(pt.fY), pnt); |
| } |
| } else { |
| iter.fDevice->drawImage(iter, image, x, y, pnt); |
| } |
| } |
| |
| LOOPER_END |
| } |
| |
| void SkCanvas::onDrawImageRect(const SkImage* image, const SkRect* src, const SkRect& dst, |
| const SkPaint* paint, SrcRectConstraint constraint) { |
| TRACE_EVENT0("disabled-by-default-skia", "SkCanvas::drawImageRect()"); |
| if (nullptr == paint || paint->canComputeFastBounds()) { |
| SkRect storage = dst; |
| if (paint) { |
| paint->computeFastBounds(dst, &storage); |
| } |
| if (this->quickReject(storage)) { |
| return; |
| } |
| } |
| SkLazyPaint lazy; |
| if (nullptr == paint) { |
| paint = lazy.init(); |
| } |
| |
| LOOPER_BEGIN_CHECK_COMPLETE_OVERWRITE(*paint, SkDrawFilter::kBitmap_Type, &dst, |
| image->isOpaque()) |
| |
| while (iter.next()) { |
| iter.fDevice->drawImageRect(iter, image, src, dst, looper.paint(), constraint); |
| } |
| |
| LOOPER_END |
| } |
| |
| void SkCanvas::onDrawBitmap(const SkBitmap& bitmap, SkScalar x, SkScalar y, const SkPaint* paint) { |
| TRACE_EVENT0("disabled-by-default-skia", "SkCanvas::drawBitmap()"); |
| SkDEBUGCODE(bitmap.validate();) |
| |
| if (bitmap.drawsNothing()) { |
| return; |
| } |
| |
| SkLazyPaint lazy; |
| if (nullptr == paint) { |
| paint = lazy.init(); |
| } |
| |
| const SkMatrix matrix = SkMatrix::MakeTrans(x, y); |
| |
| SkRect storage; |
| const SkRect* bounds = nullptr; |
| if (paint->canComputeFastBounds()) { |
| bitmap.getBounds(&storage); |
| matrix.mapRect(&storage); |
| SkRect tmp = storage; |
| if (this->quickReject(paint->computeFastBounds(tmp, &tmp))) { |
| return; |
| } |
| bounds = &storage; |
| } |
| |
| bool drawAsSprite = bounds && this->canDrawBitmapAsSprite(x, y, bitmap.width(), bitmap.height(), |
| *paint); |
| if (drawAsSprite && paint->getImageFilter()) { |
| // Until imagefilters are updated, they cannot handle any src type but N32... |
| if (bitmap.info().colorType() != kN32_SkColorType || bitmap.info().isSRGB()) { |
| drawAsSprite = false; |
| } |
| } |
| |
| LOOPER_BEGIN_DRAWBITMAP(*paint, drawAsSprite, bounds) |
| |
| while (iter.next()) { |
| const SkPaint& pnt = looper.paint(); |
| if (drawAsSprite && pnt.getImageFilter()) { |
| SkPoint pt; |
| iter.fMatrix->mapXY(x, y, &pt); |
| iter.fDevice->drawBitmapAsSprite(iter, bitmap, |
| SkScalarRoundToInt(pt.fX), |
| SkScalarRoundToInt(pt.fY), pnt); |
| } else { |
| iter.fDevice->drawBitmap(iter, bitmap, matrix, 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, SkDrawFilter::kBitmap_Type, &dst, |
| bitmap.isOpaque()) |
| |
| while (iter.next()) { |
| iter.fDevice->drawBitmapRect(iter, 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) { |
| TRACE_EVENT0("disabled-by-default-skia", "SkCanvas::drawBitmapRectToRect()"); |
| 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) { |
| TRACE_EVENT0("disabled-by-default-skia", "SkCanvas::drawImageNine()"); |
| |
| 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(*paint, SkDrawFilter::kBitmap_Type, &dst) |
| |
| while (iter.next()) { |
| iter.fDevice->drawImageNine(iter, image, center, dst, looper.paint()); |
| } |
| |
| LOOPER_END |
| } |
| |
| void SkCanvas::onDrawBitmapNine(const SkBitmap& bitmap, const SkIRect& center, const SkRect& dst, |
| const SkPaint* paint) { |
| TRACE_EVENT0("disabled-by-default-skia", "SkCanvas::drawBitmapNine()"); |
| SkDEBUGCODE(bitmap.validate();) |
| |
| 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(*paint, SkDrawFilter::kBitmap_Type, &dst) |
| |
| while (iter.next()) { |
| iter.fDevice->drawBitmapNine(iter, bitmap, center, dst, looper.paint()); |
| } |
| |
| LOOPER_END |
| } |
| |
| class SkDeviceFilteredPaint { |
| public: |
| SkDeviceFilteredPaint(SkBaseDevice* device, const SkPaint& paint) { |
| uint32_t filteredFlags = device->filterTextFlags(paint); |
| if (filteredFlags != paint.getFlags()) { |
| SkPaint* newPaint = fLazy.set(paint); |
| newPaint->setFlags(filteredFlags); |
| fPaint = newPaint; |
| } else { |
| fPaint = &paint; |
| } |
| } |
| |
| const SkPaint& paint() const { return *fPaint; } |
| |
| private: |
| const SkPaint* fPaint; |
| SkLazyPaint fLazy; |
| }; |
| |
| void SkCanvas::DrawRect(const SkDraw& draw, const SkPaint& paint, |
| const SkRect& r, SkScalar textSize) { |
| if (paint.getStyle() == SkPaint::kFill_Style) { |
| draw.fDevice->drawRect(draw, r, paint); |
| } else { |
| SkPaint p(paint); |
| p.setStrokeWidth(SkScalarMul(textSize, paint.getStrokeWidth())); |
| draw.fDevice->drawRect(draw, r, p); |
| } |
| } |
| |
| void SkCanvas::DrawTextDecorations(const SkDraw& draw, const SkPaint& paint, |
| const char text[], size_t byteLength, |
| SkScalar x, SkScalar y) { |
| SkASSERT(byteLength == 0 || text != nullptr); |
| |
| // nothing to draw |
| if (text == nullptr || byteLength == 0 || |
| draw.fClip->isEmpty() || |
| (paint.getAlpha() == 0 && paint.getXfermode() == nullptr)) { |
| return; |
| } |
| |
| SkScalar width = 0; |
| SkPoint start; |
| |
| start.set(0, 0); // to avoid warning |
| if (paint.getFlags() & (SkPaint::kUnderlineText_Flag | |
| SkPaint::kStrikeThruText_Flag)) { |
| width = paint.measureText(text, byteLength); |
| |
| SkScalar offsetX = 0; |
| if (paint.getTextAlign() == SkPaint::kCenter_Align) { |
| offsetX = SkScalarHalf(width); |
| } else if (paint.getTextAlign() == SkPaint::kRight_Align) { |
| offsetX = width; |
| } |
| start.set(x - offsetX, y); |
| } |
| |
| if (0 == width) { |
| return; |
| } |
| |
| uint32_t flags = paint.getFlags(); |
| |
| if (flags & (SkPaint::kUnderlineText_Flag | |
| SkPaint::kStrikeThruText_Flag)) { |
| SkScalar textSize = paint.getTextSize(); |
| SkScalar height = SkScalarMul(textSize, kStdUnderline_Thickness); |
| SkRect r; |
| |
| r.fLeft = start.fX; |
| r.fRight = start.fX + width; |
| |
| if (flags & SkPaint::kUnderlineText_Flag) { |
| SkScalar offset = SkScalarMulAdd(textSize, kStdUnderline_Offset, |
| start.fY); |
| r.fTop = offset; |
| r.fBottom = offset + height; |
| DrawRect(draw, paint, r, 1); |
| } |
| if (flags & SkPaint::kStrikeThruText_Flag) { |
| SkScalar offset = SkScalarMulAdd(textSize, kStdStrikeThru_Offset, |
| start.fY); |
| r.fTop = offset; |
| r.fBottom = offset + height; |
| DrawRect(draw, paint, r, 1); |
| } |
| } |
| } |
| |
| void SkCanvas::onDrawText(const void* text, size_t byteLength, SkScalar x, SkScalar y, |
| const SkPaint& paint) { |
| LOOPER_BEGIN(paint, SkDrawFilter::kText_Type, nullptr) |
| |
| while (iter.next()) { |
| SkDeviceFilteredPaint dfp(iter.fDevice, looper.paint()); |
| iter.fDevice->drawText(iter, text, byteLength, x, y, dfp.paint()); |
| DrawTextDecorations(iter, dfp.paint(), |
| static_cast<const char*>(text), byteLength, x, y); |
| } |
| |
| LOOPER_END |
| } |
| |
| void SkCanvas::onDrawPosText(const void* text, size_t byteLength, const SkPoint pos[], |
| const SkPaint& paint) { |
| SkPoint textOffset = SkPoint::Make(0, 0); |
| |
| LOOPER_BEGIN(paint, SkDrawFilter::kText_Type, nullptr) |
| |
| while (iter.next()) { |
| SkDeviceFilteredPaint dfp(iter.fDevice, looper.paint()); |
| iter.fDevice->drawPosText(iter, text, byteLength, &pos->fX, 2, textOffset, |
| dfp.paint()); |
| } |
| |
| LOOPER_END |
| } |
| |
| void SkCanvas::onDrawPosTextH(const void* text, size_t byteLength, const SkScalar xpos[], |
| SkScalar constY, const SkPaint& paint) { |
| |
| SkPoint textOffset = SkPoint::Make(0, constY); |
| |
| LOOPER_BEGIN(paint, SkDrawFilter::kText_Type, nullptr) |
| |
| while (iter.next()) { |
| SkDeviceFilteredPaint dfp(iter.fDevice, looper.paint()); |
| iter.fDevice->drawPosText(iter, text, byteLength, xpos, 1, textOffset, |
| dfp.paint()); |
| } |
| |
| LOOPER_END |
| } |
| |
| void SkCanvas::onDrawTextOnPath(const void* text, size_t byteLength, const SkPath& path, |
| const SkMatrix* matrix, const SkPaint& paint) { |
| LOOPER_BEGIN(paint, SkDrawFilter::kText_Type, nullptr) |
| |
| while (iter.next()) { |
| iter.fDevice->drawTextOnPath(iter, text, byteLength, path, |
| matrix, 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). |
| SkDrawFilter* drawFilter = fMCRec->fFilter; |
| fMCRec->fFilter = nullptr; |
| |
| LOOPER_BEGIN(paint, SkDrawFilter::kText_Type, bounds) |
| |
| while (iter.next()) { |
| SkDeviceFilteredPaint dfp(iter.fDevice, looper.paint()); |
| iter.fDevice->drawTextBlob(iter, blob, x, y, dfp.paint(), drawFilter); |
| } |
| |
| LOOPER_END |
| |
| fMCRec->fFilter = drawFilter; |
| } |
| |
| // These will become non-virtual, so they always call the (virtual) onDraw... method |
| void SkCanvas::drawText(const void* text, size_t byteLength, SkScalar x, SkScalar y, |
| const SkPaint& paint) { |
| TRACE_EVENT0("disabled-by-default-skia", "SkCanvas::drawText()"); |
| this->onDrawText(text, byteLength, x, y, paint); |
| } |
| void SkCanvas::drawPosText(const void* text, size_t byteLength, const SkPoint pos[], |
| const SkPaint& paint) { |
| TRACE_EVENT0("disabled-by-default-skia", "SkCanvas::drawPosText()"); |
| this->onDrawPosText(text, byteLength, pos, paint); |
| } |
| void SkCanvas::drawPosTextH(const void* text, size_t byteLength, const SkScalar xpos[], |
| SkScalar constY, const SkPaint& paint) { |
| TRACE_EVENT0("disabled-by-default-skia", "SkCanvas::drawPosTextH()"); |
| this->onDrawPosTextH(text, byteLength, xpos, constY, paint); |
| } |
| void SkCanvas::drawTextOnPath(const void* text, size_t byteLength, const SkPath& path, |
| const SkMatrix* matrix, const SkPaint& paint) { |
| TRACE_EVENT0("disabled-by-default-skia", "SkCanvas::drawTextOnPath()"); |
| this->onDrawTextOnPath(text, byteLength, path, matrix, paint); |
| } |
| void SkCanvas::drawTextBlob(const SkTextBlob* blob, SkScalar x, SkScalar y, |
| const SkPaint& paint) { |
| RETURN_ON_NULL(blob); |
| TRACE_EVENT0("disabled-by-default-skia", "SkCanvas::drawTextBlob()"); |
| this->onDrawTextBlob(blob, x, y, paint); |
| } |
| |
| void SkCanvas::onDrawVertices(VertexMode vmode, int vertexCount, |
| const SkPoint verts[], const SkPoint texs[], |
| const SkColor colors[], SkXfermode* xmode, |
| const uint16_t indices[], int indexCount, |
| const SkPaint& paint) { |
| TRACE_EVENT0("disabled-by-default-skia", "SkCanvas::drawVertices()"); |
| LOOPER_BEGIN(paint, SkDrawFilter::kPath_Type, nullptr) |
| |
| while (iter.next()) { |
| iter.fDevice->drawVertices(iter, vmode, vertexCount, verts, texs, |
| colors, xmode, indices, indexCount, |
| looper.paint()); |
| } |
| |
| LOOPER_END |
| } |
| |
| void SkCanvas::drawPatch(const SkPoint cubics[12], const SkColor colors[4], |
| const SkPoint texCoords[4], SkXfermode* xmode, const SkPaint& paint) { |
| TRACE_EVENT0("disabled-by-default-skia", "SkCanvas::drawPatch()"); |
| if (nullptr == cubics) { |
| return; |
| } |
| |
| // 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; |
| } |
| |
| this->onDrawPatch(cubics, colors, texCoords, xmode, paint); |
| } |
| |
| void SkCanvas::onDrawPatch(const SkPoint cubics[12], const SkColor colors[4], |
| const SkPoint texCoords[4], SkXfermode* xmode, const SkPaint& paint) { |
| |
| LOOPER_BEGIN(paint, SkDrawFilter::kPath_Type, nullptr) |
| |
| while (iter.next()) { |
| iter.fDevice->drawPatch(iter, cubics, colors, texCoords, xmode, paint); |
| } |
| |
| LOOPER_END |
| } |
| |
| void SkCanvas::drawDrawable(SkDrawable* dr, SkScalar x, SkScalar y) { |
| 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) { |
| RETURN_ON_NULL(dr); |
| if (matrix && matrix->isIdentity()) { |
| matrix = nullptr; |
| } |
| this->onDrawDrawable(dr, matrix); |
| } |
| |
| void SkCanvas::onDrawDrawable(SkDrawable* dr, const SkMatrix* matrix) { |
| SkRect bounds = dr->getBounds(); |
| if (matrix) { |
| matrix->mapRect(&bounds); |
| } |
| if (this->quickReject(bounds)) { |
| return; |
| } |
| dr->draw(this, matrix); |
| } |
| |
| void SkCanvas::onDrawAtlas(const SkImage* atlas, const SkRSXform xform[], const SkRect tex[], |
| const SkColor colors[], int count, SkXfermode::Mode mode, |
| const SkRect* cull, const SkPaint* paint) { |
| if (cull && this->quickReject(*cull)) { |
| return; |
| } |
| |
| SkPaint pnt; |
| if (paint) { |
| pnt = *paint; |
| } |
| |
| LOOPER_BEGIN(pnt, SkDrawFilter::kPath_Type, nullptr) |
| while (iter.next()) { |
| iter.fDevice->drawAtlas(iter, atlas, xform, tex, colors, count, mode, pnt); |
| } |
| LOOPER_END |
| } |
| |
| void SkCanvas::onDrawAnnotation(const SkRect& rect, const char key[], SkData* value) { |
| SkASSERT(key); |
| |
| SkPaint paint; |
| LOOPER_BEGIN(paint, SkDrawFilter::kRect_Type, nullptr) |
| while (iter.next()) { |
| iter.fDevice->drawAnnotation(iter, 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::drawARGB(U8CPU a, U8CPU r, U8CPU g, U8CPU b, |
| SkXfermode::Mode mode) { |
| TRACE_EVENT0("disabled-by-default-skia", "SkCanvas::drawARGB()"); |
| SkPaint paint; |
| |
| paint.setARGB(a, r, g, b); |
| if (SkXfermode::kSrcOver_Mode != mode) { |
| paint.setXfermodeMode(mode); |
| } |
| this->drawPaint(paint); |
| } |
| |
| void SkCanvas::drawColor(SkColor c, SkXfermode::Mode mode) { |
| TRACE_EVENT0("disabled-by-default-skia", "SkCanvas::drawColor()"); |
| SkPaint paint; |
| |
| paint.setColor(c); |
| if (SkXfermode::kSrcOver_Mode != mode) { |
| paint.setXfermodeMode(mode); |
| } |
| this->drawPaint(paint); |
| } |
| |
| void SkCanvas::drawPoint(SkScalar x, SkScalar y, const SkPaint& paint) { |
| TRACE_EVENT0("disabled-by-default-skia", "SkCanvas::drawPoint(SkPaint)"); |
| SkPoint pt; |
| |
| pt.set(x, y); |
| this->drawPoints(kPoints_PointMode, 1, &pt, paint); |
| } |
| |
| void SkCanvas::drawPoint(SkScalar x, SkScalar y, SkColor color) { |
| TRACE_EVENT0("disabled-by-default-skia", "SkCanvas::drawPoint(SkColor)"); |
| SkPoint pt; |
| SkPaint paint; |
| |
| pt.set(x, y); |
| paint.setColor(color); |
| this->drawPoints(kPoints_PointMode, 1, &pt, paint); |
| } |
| |
| void SkCanvas::drawLine(SkScalar x0, SkScalar y0, SkScalar x1, SkScalar y1, |
| const SkPaint& paint) { |
| TRACE_EVENT0("disabled-by-default-skia", "SkCanvas::drawLine()"); |
| SkPoint pts[2]; |
| |
| pts[0].set(x0, y0); |
| pts[1].set(x1, y1); |
| this->drawPoints(kLines_PointMode, 2, pts, paint); |
| } |
| |
| void SkCanvas::drawRectCoords(SkScalar left, SkScalar top, |
| SkScalar right, SkScalar bottom, |
| const SkPaint& paint) { |
| TRACE_EVENT0("disabled-by-default-skia", "SkCanvas::drawRectCoords()"); |
| SkRect r; |
| |
| r.set(left, top, right, bottom); |
| this->drawRect(r, paint); |
| } |
| |
| void SkCanvas::drawCircle(SkScalar cx, SkScalar cy, SkScalar radius, |
| const SkPaint& paint) { |
| TRACE_EVENT0("disabled-by-default-skia", "SkCanvas::drawCircle()"); |
| 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) { |
| TRACE_EVENT0("disabled-by-default-skia", "SkCanvas::drawRoundRect()"); |
| if (rx > 0 && ry > 0) { |
| if (paint.canComputeFastBounds()) { |
| SkRect storage; |
| if (this->quickReject(paint.computeFastBounds(r, &storage))) { |
| return; |
| } |
| } |
| 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("disabled-by-default-skia", "SkCanvas::drawArc()"); |
| if (SkScalarAbs(sweepAngle) >= SkIntToScalar(360)) { |
| this->drawOval(oval, paint); |
| } else { |
| SkPath path; |
| if (useCenter) { |
| path.moveTo(oval.centerX(), oval.centerY()); |
| } |
| path.arcTo(oval, startAngle, sweepAngle, !useCenter); |
| if (useCenter) { |
| path.close(); |
| } |
| this->drawPath(path, paint); |
| } |
| } |
| |
| void SkCanvas::drawTextOnPathHV(const void* text, size_t byteLength, |
| const SkPath& path, SkScalar hOffset, |
| SkScalar vOffset, const SkPaint& paint) { |
| TRACE_EVENT0("disabled-by-default-skia", "SkCanvas::drawTextOnPathHV()"); |
| SkMatrix matrix; |
| |
| matrix.setTranslate(hOffset, vOffset); |
| this->drawTextOnPath(text, byteLength, path, &matrix, paint); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| /** |
| * 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) { |
| RETURN_ON_NULL(picture); |
| |
| TRACE_EVENT0("disabled-by-default-skia", "SkCanvas::drawPicture()"); |
| 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; |
| } |
| } |
| |
| SkBaseDevice* device = this->getTopDevice(); |
| if (device) { |
| // Canvas has to first give the device the opportunity to render |
| // the picture itself. |
| if (device->EXPERIMENTAL_drawPicture(this, picture, matrix, paint)) { |
| return; // the device has rendered the entire picture |
| } |
| } |
| |
| SkAutoCanvasMatrixPaint acmp(this, matrix, paint, picture->cullRect()); |
| picture->playback(this); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| SkCanvas::LayerIter::LayerIter(SkCanvas* canvas, bool skipEmptyClips) { |
| static_assert(sizeof(fStorage) >= sizeof(SkDrawIter), "fStorage_too_small"); |
| |
| SkASSERT(canvas); |
| |
| fImpl = new (fStorage) SkDrawIter(canvas, skipEmptyClips); |
| fDone = !fImpl->next(); |
| } |
| |
| SkCanvas::LayerIter::~LayerIter() { |
| fImpl->~SkDrawIter(); |
| } |
| |
| void SkCanvas::LayerIter::next() { |
| fDone = !fImpl->next(); |
| } |
| |
| SkBaseDevice* SkCanvas::LayerIter::device() const { |
| return fImpl->getDevice(); |
| } |
| |
| const SkMatrix& SkCanvas::LayerIter::matrix() const { |
| return fImpl->getMatrix(); |
| } |
| |
| const SkPaint& SkCanvas::LayerIter::paint() const { |
| const SkPaint* paint = fImpl->getPaint(); |
| if (nullptr == paint) { |
| paint = &fDefaultPaint; |
| } |
| return *paint; |
| } |
| |
| const SkRegion& SkCanvas::LayerIter::clip() const { return fImpl->getClip(); } |
| int SkCanvas::LayerIter::x() const { return fImpl->getX(); } |
| int SkCanvas::LayerIter::y() const { return fImpl->getY(); } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| SkCanvasClipVisitor::~SkCanvasClipVisitor() { } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static bool supported_for_raster_canvas(const SkImageInfo& info) { |
| switch (info.alphaType()) { |
| case kPremul_SkAlphaType: |
| case kOpaque_SkAlphaType: |
| break; |
| default: |
| return false; |
| } |
| |
| switch (info.colorType()) { |
| case kAlpha_8_SkColorType: |
| case kRGB_565_SkColorType: |
| case kN32_SkColorType: |
| break; |
| default: |
| return false; |
| } |
| |
| return true; |
| } |
| |
| SkCanvas* SkCanvas::NewRasterDirect(const SkImageInfo& info, void* pixels, size_t rowBytes) { |
| if (!supported_for_raster_canvas(info)) { |
| return nullptr; |
| } |
| |
| SkBitmap bitmap; |
| if (!bitmap.installPixels(info, pixels, rowBytes)) { |
| return nullptr; |
| } |
| return new SkCanvas(bitmap); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| SkAutoCanvasMatrixPaint::SkAutoCanvasMatrixPaint(SkCanvas* canvas, const SkMatrix* matrix, |
| const SkPaint* paint, const SkRect& bounds) |
| : fCanvas(canvas) |
| , fSaveCount(canvas->getSaveCount()) |
| { |
| if (paint) { |
| SkRect newBounds = bounds; |
| if (matrix) { |
| matrix->mapRect(&newBounds); |
| } |
| canvas->saveLayer(&newBounds, paint); |
| } else if (matrix) { |
| canvas->save(); |
| } |
| |
| if (matrix) { |
| canvas->concat(*matrix); |
| } |
| } |
| |
| SkAutoCanvasMatrixPaint::~SkAutoCanvasMatrixPaint() { |
| fCanvas->restoreToCount(fSaveCount); |
| } |