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- /*
- * Copyright 2016 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
- #include "include/core/SkOverdrawCanvas.h"
- #include "include/core/SkColorFilter.h"
- #include "include/core/SkDrawable.h"
- #include "include/core/SkPath.h"
- #include "include/core/SkRRect.h"
- #include "include/core/SkRSXform.h"
- #include "include/core/SkTextBlob.h"
- #include "include/private/SkTo.h"
- #include "src/core/SkDevice.h"
- #include "src/core/SkDrawShadowInfo.h"
- #include "src/core/SkGlyphRunPainter.h"
- #include "src/core/SkImagePriv.h"
- #include "src/core/SkLatticeIter.h"
- #include "src/core/SkStrikeCache.h"
- #include "src/core/SkTextBlobPriv.h"
- #include "src/utils/SkPatchUtils.h"
- SkOverdrawCanvas::SkOverdrawCanvas(SkCanvas* canvas)
- : INHERITED(canvas->onImageInfo().width(), canvas->onImageInfo().height())
- {
- // Non-drawing calls that SkOverdrawCanvas does not override (translate, save, etc.)
- // will pass through to the input canvas.
- this->addCanvas(canvas);
- static constexpr float kIncrementAlpha[] = {
- 0.0f, 0.0f, 0.0f, 0.0f, 0.0f,
- 0.0f, 0.0f, 0.0f, 0.0f, 0.0f,
- 0.0f, 0.0f, 0.0f, 0.0f, 0.0f,
- 0.0f, 0.0f, 0.0f, 0.0f, 1.0f/255,
- };
- fPaint.setAntiAlias(false);
- fPaint.setBlendMode(SkBlendMode::kPlus);
- fPaint.setColorFilter(SkColorFilters::Matrix(kIncrementAlpha));
- }
- namespace {
- class TextDevice : public SkNoPixelsDevice, public SkGlyphRunListPainter::BitmapDevicePainter {
- public:
- TextDevice(SkCanvas* overdrawCanvas, const SkSurfaceProps& props)
- : SkNoPixelsDevice{SkIRect::MakeWH(32767, 32767), props},
- fOverdrawCanvas{overdrawCanvas},
- fPainter{props, kN32_SkColorType, nullptr, SkStrikeCache::GlobalStrikeCache()} {}
- void paintPaths(SkSpan<const SkPathPos> pathsAndPositions, SkScalar scale,
- const SkPaint& paint) const override {}
- void paintMasks(SkSpan<const SkMask> masks, const SkPaint& paint) const override {
- for (auto& mask : masks) {
- fOverdrawCanvas->drawRect(SkRect::Make(mask.fBounds), SkPaint());
- }
- }
- protected:
- void drawGlyphRunList(const SkGlyphRunList& glyphRunList) override {
- fPainter.drawForBitmapDevice(glyphRunList, fOverdrawCanvas->getTotalMatrix(), this);
- }
- private:
- SkCanvas* const fOverdrawCanvas;
- SkGlyphRunListPainter fPainter;
- };
- } // namespace
- void SkOverdrawCanvas::onDrawTextBlob(const SkTextBlob* blob, SkScalar x, SkScalar y,
- const SkPaint& paint) {
- SkGlyphRunBuilder b;
- SkSurfaceProps props{0, kUnknown_SkPixelGeometry};
- this->getProps(&props);
- TextDevice device{this, props};
- b.drawTextBlob(paint, *blob, {x, y}, &device);
- }
- void SkOverdrawCanvas::onDrawPatch(const SkPoint cubics[12], const SkColor colors[4],
- const SkPoint texCoords[4], SkBlendMode blendMode,
- const SkPaint&) {
- fList[0]->onDrawPatch(cubics, colors, texCoords, blendMode, fPaint);
- }
- void SkOverdrawCanvas::onDrawPaint(const SkPaint& paint) {
- if (0 == paint.getColor() && !paint.getColorFilter() && !paint.getShader()) {
- // This is a clear, ignore it.
- } else {
- fList[0]->onDrawPaint(this->overdrawPaint(paint));
- }
- }
- void SkOverdrawCanvas::onDrawBehind(const SkPaint& paint) {
- fList[0]->onDrawBehind(this->overdrawPaint(paint));
- }
- void SkOverdrawCanvas::onDrawRect(const SkRect& rect, const SkPaint& paint) {
- fList[0]->onDrawRect(rect, this->overdrawPaint(paint));
- }
- void SkOverdrawCanvas::onDrawRegion(const SkRegion& region, const SkPaint& paint) {
- fList[0]->onDrawRegion(region, this->overdrawPaint(paint));
- }
- void SkOverdrawCanvas::onDrawOval(const SkRect& oval, const SkPaint& paint) {
- fList[0]->onDrawOval(oval, this->overdrawPaint(paint));
- }
- void SkOverdrawCanvas::onDrawArc(const SkRect& arc, SkScalar startAngle, SkScalar sweepAngle,
- bool useCenter, const SkPaint& paint) {
- fList[0]->onDrawArc(arc, startAngle, sweepAngle, useCenter, this->overdrawPaint(paint));
- }
- void SkOverdrawCanvas::onDrawDRRect(const SkRRect& outer, const SkRRect& inner,
- const SkPaint& paint) {
- fList[0]->onDrawDRRect(outer, inner, this->overdrawPaint(paint));
- }
- void SkOverdrawCanvas::onDrawRRect(const SkRRect& rect, const SkPaint& paint) {
- fList[0]->onDrawRRect(rect, this->overdrawPaint(paint));
- }
- void SkOverdrawCanvas::onDrawPoints(PointMode mode, size_t count, const SkPoint points[],
- const SkPaint& paint) {
- fList[0]->onDrawPoints(mode, count, points, this->overdrawPaint(paint));
- }
- void SkOverdrawCanvas::onDrawVerticesObject(const SkVertices* vertices,
- const SkVertices::Bone bones[], int boneCount,
- SkBlendMode blendMode, const SkPaint& paint) {
- fList[0]->onDrawVerticesObject(vertices,
- bones,
- boneCount,
- blendMode,
- this->overdrawPaint(paint));
- }
- void SkOverdrawCanvas::onDrawAtlas(const SkImage* image, const SkRSXform xform[],
- const SkRect texs[], const SkColor colors[], int count,
- SkBlendMode mode, const SkRect* cull, const SkPaint* paint) {
- SkPaint* paintPtr = &fPaint;
- SkPaint storage;
- if (paint) {
- storage = this->overdrawPaint(*paint);
- paintPtr = &storage;
- }
- fList[0]->onDrawAtlas(image, xform, texs, colors, count, mode, cull, paintPtr);
- }
- void SkOverdrawCanvas::onDrawPath(const SkPath& path, const SkPaint& paint) {
- fList[0]->onDrawPath(path, fPaint);
- }
- void SkOverdrawCanvas::onDrawImage(const SkImage* image, SkScalar x, SkScalar y, const SkPaint*) {
- fList[0]->onDrawRect(SkRect::MakeXYWH(x, y, image->width(), image->height()), fPaint);
- }
- void SkOverdrawCanvas::onDrawImageRect(const SkImage* image, const SkRect* src, const SkRect& dst,
- const SkPaint*, SrcRectConstraint) {
- fList[0]->onDrawRect(dst, fPaint);
- }
- void SkOverdrawCanvas::onDrawImageNine(const SkImage*, const SkIRect&, const SkRect& dst,
- const SkPaint*) {
- fList[0]->onDrawRect(dst, fPaint);
- }
- void SkOverdrawCanvas::onDrawImageLattice(const SkImage* image, const Lattice& lattice,
- const SkRect& dst, const SkPaint*) {
- SkIRect bounds;
- Lattice latticePlusBounds = lattice;
- if (!latticePlusBounds.fBounds) {
- bounds = SkIRect::MakeWH(image->width(), image->height());
- latticePlusBounds.fBounds = &bounds;
- }
- if (SkLatticeIter::Valid(image->width(), image->height(), latticePlusBounds)) {
- SkLatticeIter iter(latticePlusBounds, dst);
- SkRect dummy, iterDst;
- while (iter.next(&dummy, &iterDst)) {
- fList[0]->onDrawRect(iterDst, fPaint);
- }
- } else {
- fList[0]->onDrawRect(dst, fPaint);
- }
- }
- void SkOverdrawCanvas::onDrawBitmap(const SkBitmap& bitmap, SkScalar x, SkScalar y,
- const SkPaint*) {
- fList[0]->onDrawRect(SkRect::MakeXYWH(x, y, bitmap.width(), bitmap.height()), fPaint);
- }
- void SkOverdrawCanvas::onDrawBitmapRect(const SkBitmap&, const SkRect*, const SkRect& dst,
- const SkPaint*, SrcRectConstraint) {
- fList[0]->onDrawRect(dst, fPaint);
- }
- void SkOverdrawCanvas::onDrawBitmapNine(const SkBitmap&, const SkIRect&, const SkRect& dst,
- const SkPaint*) {
- fList[0]->onDrawRect(dst, fPaint);
- }
- void SkOverdrawCanvas::onDrawBitmapLattice(const SkBitmap& bitmap, const Lattice& lattice,
- const SkRect& dst, const SkPaint* paint) {
- sk_sp<SkImage> image = SkMakeImageFromRasterBitmap(bitmap, kNever_SkCopyPixelsMode);
- this->onDrawImageLattice(image.get(), lattice, dst, paint);
- }
- void SkOverdrawCanvas::onDrawDrawable(SkDrawable* drawable, const SkMatrix* matrix) {
- drawable->draw(this, matrix);
- }
- void SkOverdrawCanvas::onDrawPicture(const SkPicture*, const SkMatrix*, const SkPaint*) {
- SkASSERT(false);
- return;
- }
- void SkOverdrawCanvas::onDrawAnnotation(const SkRect&, const char[], SkData*) {}
- void SkOverdrawCanvas::onDrawShadowRec(const SkPath& path, const SkDrawShadowRec& rec) {
- SkRect bounds;
- SkDrawShadowMetrics::GetLocalBounds(path, rec, this->getTotalMatrix(), &bounds);
- fList[0]->onDrawRect(bounds, fPaint);
- }
- void SkOverdrawCanvas::onDrawEdgeAAQuad(const SkRect& rect, const SkPoint clip[4],
- QuadAAFlags aa, SkColor color, SkBlendMode mode) {
- if (clip) {
- SkPath path;
- path.addPoly(clip, 4, true);
- fList[0]->onDrawPath(path, fPaint);
- } else {
- fList[0]->onDrawRect(rect, fPaint);
- }
- }
- void SkOverdrawCanvas::onDrawEdgeAAImageSet(const ImageSetEntry set[], int count,
- const SkPoint dstClips[],
- const SkMatrix preViewMatrices[], const SkPaint* paint,
- SrcRectConstraint constraint) {
- int clipIndex = 0;
- for (int i = 0; i < count; ++i) {
- if (set[i].fMatrixIndex >= 0) {
- fList[0]->save();
- fList[0]->concat(preViewMatrices[set[i].fMatrixIndex]);
- }
- if (set[i].fHasClip) {
- SkPath path;
- path.addPoly(dstClips + clipIndex, 4, true);
- clipIndex += 4;
- fList[0]->onDrawPath(path, fPaint);
- } else {
- fList[0]->onDrawRect(set[i].fDstRect, fPaint);
- }
- if (set[i].fMatrixIndex >= 0) {
- fList[0]->restore();
- }
- }
- }
- inline SkPaint SkOverdrawCanvas::overdrawPaint(const SkPaint& paint) {
- SkPaint newPaint = fPaint;
- newPaint.setStyle(paint.getStyle());
- newPaint.setStrokeWidth(paint.getStrokeWidth());
- return newPaint;
- }
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