| /* |
| * Copyright (C) 2014 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "SkiaCanvas.h" |
| |
| #include "CanvasProperty.h" |
| #include "NinePatchUtils.h" |
| #include "VectorDrawable.h" |
| #include "hwui/Bitmap.h" |
| #include "hwui/MinikinUtils.h" |
| #include "pipeline/skia/AnimatedDrawables.h" |
| |
| #include <SkAnimatedImage.h> |
| #include <SkCanvasStateUtils.h> |
| #include <SkColorFilter.h> |
| #include <SkColorSpaceXformCanvas.h> |
| #include <SkDeque.h> |
| #include <SkDrawFilter.h> |
| #include <SkDrawable.h> |
| #include <SkGraphics.h> |
| #include <SkImage.h> |
| #include <SkImagePriv.h> |
| #include <SkPicture.h> |
| #include <SkRSXform.h> |
| #include <SkShader.h> |
| #include <SkTemplates.h> |
| #include <SkTextBlob.h> |
| |
| #include <memory> |
| |
| namespace android { |
| |
| using uirenderer::PaintUtils; |
| |
| Canvas* Canvas::create_canvas(const SkBitmap& bitmap) { |
| return new SkiaCanvas(bitmap); |
| } |
| |
| Canvas* Canvas::create_canvas(SkCanvas* skiaCanvas) { |
| return new SkiaCanvas(skiaCanvas); |
| } |
| |
| SkiaCanvas::SkiaCanvas() {} |
| |
| SkiaCanvas::SkiaCanvas(SkCanvas* canvas) : mCanvas(canvas) {} |
| |
| SkiaCanvas::SkiaCanvas(const SkBitmap& bitmap) { |
| sk_sp<SkColorSpace> cs = bitmap.refColorSpace(); |
| mCanvasOwned = |
| std::unique_ptr<SkCanvas>(new SkCanvas(bitmap, SkCanvas::ColorBehavior::kLegacy)); |
| if (cs.get() == nullptr || cs->isSRGB()) { |
| if (!uirenderer::Properties::isSkiaEnabled()) { |
| mCanvasWrapper = |
| SkCreateColorSpaceXformCanvas(mCanvasOwned.get(), SkColorSpace::MakeSRGB()); |
| mCanvas = mCanvasWrapper.get(); |
| } else { |
| mCanvas = mCanvasOwned.get(); |
| } |
| } else { |
| /** The wrapper is needed if we are drawing into a non-sRGB destination, since |
| * we need to transform all colors (not just bitmaps via filters) into the |
| * destination's colorspace. |
| */ |
| mCanvasWrapper = SkCreateColorSpaceXformCanvas(mCanvasOwned.get(), std::move(cs)); |
| mCanvas = mCanvasWrapper.get(); |
| } |
| } |
| |
| SkiaCanvas::~SkiaCanvas() {} |
| |
| void SkiaCanvas::reset(SkCanvas* skiaCanvas) { |
| if (mCanvas != skiaCanvas) { |
| mCanvas = skiaCanvas; |
| mCanvasOwned.reset(); |
| mCanvasWrapper.reset(); |
| } |
| mSaveStack.reset(nullptr); |
| } |
| |
| // ---------------------------------------------------------------------------- |
| // Canvas state operations: Replace Bitmap |
| // ---------------------------------------------------------------------------- |
| |
| void SkiaCanvas::setBitmap(const SkBitmap& bitmap) { |
| sk_sp<SkColorSpace> cs = bitmap.refColorSpace(); |
| std::unique_ptr<SkCanvas> newCanvas = |
| std::unique_ptr<SkCanvas>(new SkCanvas(bitmap, SkCanvas::ColorBehavior::kLegacy)); |
| std::unique_ptr<SkCanvas> newCanvasWrapper; |
| if (cs.get() != nullptr && !cs->isSRGB()) { |
| newCanvasWrapper = SkCreateColorSpaceXformCanvas(newCanvas.get(), std::move(cs)); |
| } else if (!uirenderer::Properties::isSkiaEnabled()) { |
| newCanvasWrapper = SkCreateColorSpaceXformCanvas(newCanvas.get(), SkColorSpace::MakeSRGB()); |
| } |
| |
| // deletes the previously owned canvas (if any) |
| mCanvasOwned = std::move(newCanvas); |
| mCanvasWrapper = std::move(newCanvasWrapper); |
| mCanvas = mCanvasWrapper ? mCanvasWrapper.get() : mCanvasOwned.get(); |
| |
| // clean up the old save stack |
| mSaveStack.reset(nullptr); |
| } |
| |
| // ---------------------------------------------------------------------------- |
| // Canvas state operations |
| // ---------------------------------------------------------------------------- |
| |
| bool SkiaCanvas::isOpaque() { |
| return mCanvas->imageInfo().isOpaque(); |
| } |
| |
| int SkiaCanvas::width() { |
| return mCanvas->imageInfo().width(); |
| } |
| |
| int SkiaCanvas::height() { |
| return mCanvas->imageInfo().height(); |
| } |
| |
| // ---------------------------------------------------------------------------- |
| // Canvas state operations: Save (layer) |
| // ---------------------------------------------------------------------------- |
| |
| int SkiaCanvas::getSaveCount() const { |
| return mCanvas->getSaveCount(); |
| } |
| |
| int SkiaCanvas::save(SaveFlags::Flags flags) { |
| int count = mCanvas->save(); |
| recordPartialSave(flags); |
| return count; |
| } |
| |
| // The SkiaCanvas::restore operation layers on the capability to preserve |
| // either (or both) the matrix and/or clip state after a SkCanvas::restore |
| // operation. It does this by explicitly saving off the clip & matrix state |
| // when requested and playing it back after the SkCanvas::restore. |
| void SkiaCanvas::restore() { |
| const auto* rec = this->currentSaveRec(); |
| if (!rec) { |
| // Fast path - no record for this frame. |
| mCanvas->restore(); |
| return; |
| } |
| |
| bool preserveMatrix = !(rec->saveFlags & SaveFlags::Matrix); |
| bool preserveClip = !(rec->saveFlags & SaveFlags::Clip); |
| |
| SkMatrix savedMatrix; |
| if (preserveMatrix) { |
| savedMatrix = mCanvas->getTotalMatrix(); |
| } |
| |
| const size_t clipIndex = rec->clipIndex; |
| |
| mCanvas->restore(); |
| mSaveStack->pop_back(); |
| |
| if (preserveMatrix) { |
| mCanvas->setMatrix(savedMatrix); |
| } |
| |
| if (preserveClip) { |
| this->applyPersistentClips(clipIndex); |
| } |
| } |
| |
| void SkiaCanvas::restoreToCount(int restoreCount) { |
| while (mCanvas->getSaveCount() > restoreCount) { |
| this->restore(); |
| } |
| } |
| |
| static inline SkCanvas::SaveLayerFlags layerFlags(SaveFlags::Flags flags) { |
| SkCanvas::SaveLayerFlags layerFlags = 0; |
| |
| if (!(flags & SaveFlags::ClipToLayer)) { |
| layerFlags |= SkCanvas::kDontClipToLayer_Legacy_SaveLayerFlag; |
| } |
| |
| return layerFlags; |
| } |
| |
| int SkiaCanvas::saveLayer(float left, float top, float right, float bottom, const SkPaint* paint, |
| SaveFlags::Flags flags) { |
| const SkRect bounds = SkRect::MakeLTRB(left, top, right, bottom); |
| const SkCanvas::SaveLayerRec rec(&bounds, paint, layerFlags(flags)); |
| |
| return mCanvas->saveLayer(rec); |
| } |
| |
| int SkiaCanvas::saveLayerAlpha(float left, float top, float right, float bottom, int alpha, |
| SaveFlags::Flags flags) { |
| if (static_cast<unsigned>(alpha) < 0xFF) { |
| SkPaint alphaPaint; |
| alphaPaint.setAlpha(alpha); |
| return this->saveLayer(left, top, right, bottom, &alphaPaint, flags); |
| } |
| return this->saveLayer(left, top, right, bottom, nullptr, flags); |
| } |
| |
| class SkiaCanvas::Clip { |
| public: |
| Clip(const SkRect& rect, SkClipOp op, const SkMatrix& m) |
| : mType(Type::Rect), mOp(op), mMatrix(m), mRRect(SkRRect::MakeRect(rect)) {} |
| Clip(const SkRRect& rrect, SkClipOp op, const SkMatrix& m) |
| : mType(Type::RRect), mOp(op), mMatrix(m), mRRect(rrect) {} |
| Clip(const SkPath& path, SkClipOp op, const SkMatrix& m) |
| : mType(Type::Path), mOp(op), mMatrix(m), mPath(&path) {} |
| |
| void apply(SkCanvas* canvas) const { |
| canvas->setMatrix(mMatrix); |
| switch (mType) { |
| case Type::Rect: |
| canvas->clipRect(mRRect.rect(), mOp); |
| break; |
| case Type::RRect: |
| canvas->clipRRect(mRRect, mOp); |
| break; |
| case Type::Path: |
| canvas->clipPath(*mPath.get(), mOp); |
| break; |
| } |
| } |
| |
| private: |
| enum class Type { |
| Rect, |
| RRect, |
| Path, |
| }; |
| |
| Type mType; |
| SkClipOp mOp; |
| SkMatrix mMatrix; |
| |
| // These are logically a union (tracked separately due to non-POD path). |
| SkTLazy<SkPath> mPath; |
| SkRRect mRRect; |
| }; |
| |
| const SkiaCanvas::SaveRec* SkiaCanvas::currentSaveRec() const { |
| const SaveRec* rec = mSaveStack ? static_cast<const SaveRec*>(mSaveStack->back()) : nullptr; |
| int currentSaveCount = mCanvas->getSaveCount(); |
| SkASSERT(!rec || currentSaveCount >= rec->saveCount); |
| |
| return (rec && rec->saveCount == currentSaveCount) ? rec : nullptr; |
| } |
| |
| // ---------------------------------------------------------------------------- |
| // functions to emulate legacy SaveFlags (i.e. independent matrix/clip flags) |
| // ---------------------------------------------------------------------------- |
| |
| void SkiaCanvas::recordPartialSave(SaveFlags::Flags flags) { |
| // A partial save is a save operation which doesn't capture the full canvas state. |
| // (either SaveFlags::Matrix or SaveFlags::Clip is missing). |
| |
| // Mask-out non canvas state bits. |
| flags &= SaveFlags::MatrixClip; |
| |
| if (flags == SaveFlags::MatrixClip) { |
| // not a partial save. |
| return; |
| } |
| |
| if (!mSaveStack) { |
| mSaveStack.reset(new SkDeque(sizeof(struct SaveRec), 8)); |
| } |
| |
| SaveRec* rec = static_cast<SaveRec*>(mSaveStack->push_back()); |
| rec->saveCount = mCanvas->getSaveCount(); |
| rec->saveFlags = flags; |
| rec->clipIndex = mClipStack.size(); |
| } |
| |
| template <typename T> |
| void SkiaCanvas::recordClip(const T& clip, SkClipOp op) { |
| // Only need tracking when in a partial save frame which |
| // doesn't restore the clip. |
| const SaveRec* rec = this->currentSaveRec(); |
| if (rec && !(rec->saveFlags & SaveFlags::Clip)) { |
| mClipStack.emplace_back(clip, op, mCanvas->getTotalMatrix()); |
| } |
| } |
| |
| // Applies and optionally removes all clips >= index. |
| void SkiaCanvas::applyPersistentClips(size_t clipStartIndex) { |
| SkASSERT(clipStartIndex <= mClipStack.size()); |
| const auto begin = mClipStack.cbegin() + clipStartIndex; |
| const auto end = mClipStack.cend(); |
| |
| // Clip application mutates the CTM. |
| const SkMatrix saveMatrix = mCanvas->getTotalMatrix(); |
| |
| for (auto clip = begin; clip != end; ++clip) { |
| clip->apply(mCanvas); |
| } |
| |
| mCanvas->setMatrix(saveMatrix); |
| |
| // If the current/post-restore save rec is also persisting clips, we |
| // leave them on the stack to be reapplied part of the next restore(). |
| // Otherwise we're done and just pop them. |
| const auto* rec = this->currentSaveRec(); |
| if (!rec || (rec->saveFlags & SaveFlags::Clip)) { |
| mClipStack.erase(begin, end); |
| } |
| } |
| |
| // ---------------------------------------------------------------------------- |
| // Canvas state operations: Matrix |
| // ---------------------------------------------------------------------------- |
| |
| void SkiaCanvas::getMatrix(SkMatrix* outMatrix) const { |
| *outMatrix = mCanvas->getTotalMatrix(); |
| } |
| |
| void SkiaCanvas::setMatrix(const SkMatrix& matrix) { |
| mCanvas->setMatrix(matrix); |
| } |
| |
| void SkiaCanvas::concat(const SkMatrix& matrix) { |
| mCanvas->concat(matrix); |
| } |
| |
| void SkiaCanvas::rotate(float degrees) { |
| mCanvas->rotate(degrees); |
| } |
| |
| void SkiaCanvas::scale(float sx, float sy) { |
| mCanvas->scale(sx, sy); |
| } |
| |
| void SkiaCanvas::skew(float sx, float sy) { |
| mCanvas->skew(sx, sy); |
| } |
| |
| void SkiaCanvas::translate(float dx, float dy) { |
| mCanvas->translate(dx, dy); |
| } |
| |
| // ---------------------------------------------------------------------------- |
| // Canvas state operations: Clips |
| // ---------------------------------------------------------------------------- |
| |
| // This function is a mirror of SkCanvas::getClipBounds except that it does |
| // not outset the edge of the clip to account for anti-aliasing. There is |
| // a skia bug to investigate pushing this logic into back into skia. |
| // (see https://code.google.com/p/skia/issues/detail?id=1303) |
| bool SkiaCanvas::getClipBounds(SkRect* outRect) const { |
| SkIRect ibounds; |
| if (!mCanvas->getDeviceClipBounds(&ibounds)) { |
| return false; |
| } |
| |
| SkMatrix inverse; |
| // if we can't invert the CTM, we can't return local clip bounds |
| if (!mCanvas->getTotalMatrix().invert(&inverse)) { |
| if (outRect) { |
| outRect->setEmpty(); |
| } |
| return false; |
| } |
| |
| if (NULL != outRect) { |
| SkRect r = SkRect::Make(ibounds); |
| inverse.mapRect(outRect, r); |
| } |
| return true; |
| } |
| |
| bool SkiaCanvas::quickRejectRect(float left, float top, float right, float bottom) const { |
| SkRect bounds = SkRect::MakeLTRB(left, top, right, bottom); |
| return mCanvas->quickReject(bounds); |
| } |
| |
| bool SkiaCanvas::quickRejectPath(const SkPath& path) const { |
| return mCanvas->quickReject(path); |
| } |
| |
| bool SkiaCanvas::clipRect(float left, float top, float right, float bottom, SkClipOp op) { |
| SkRect rect = SkRect::MakeLTRB(left, top, right, bottom); |
| this->recordClip(rect, op); |
| mCanvas->clipRect(rect, op); |
| return !mCanvas->isClipEmpty(); |
| } |
| |
| bool SkiaCanvas::clipPath(const SkPath* path, SkClipOp op) { |
| this->recordClip(*path, op); |
| mCanvas->clipPath(*path, op); |
| return !mCanvas->isClipEmpty(); |
| } |
| |
| // ---------------------------------------------------------------------------- |
| // Canvas state operations: Filters |
| // ---------------------------------------------------------------------------- |
| |
| SkDrawFilter* SkiaCanvas::getDrawFilter() { |
| return mCanvas->getDrawFilter(); |
| } |
| |
| void SkiaCanvas::setDrawFilter(SkDrawFilter* drawFilter) { |
| mCanvas->setDrawFilter(drawFilter); |
| } |
| |
| // ---------------------------------------------------------------------------- |
| // Canvas state operations: Capture |
| // ---------------------------------------------------------------------------- |
| |
| SkCanvasState* SkiaCanvas::captureCanvasState() const { |
| SkCanvas* canvas = mCanvas; |
| if (mCanvasOwned) { |
| // Important to use the underlying SkCanvas, not the wrapper. |
| canvas = mCanvasOwned.get(); |
| } |
| |
| // Workarounds for http://crbug.com/271096: SW draw only supports |
| // translate & scale transforms, and a simple rectangular clip. |
| // (This also avoids significant wasted time in calling |
| // SkCanvasStateUtils::CaptureCanvasState when the clip is complex). |
| if (!canvas->isClipRect() || (canvas->getTotalMatrix().getType() & |
| ~(SkMatrix::kTranslate_Mask | SkMatrix::kScale_Mask))) { |
| return nullptr; |
| } |
| |
| return SkCanvasStateUtils::CaptureCanvasState(canvas); |
| } |
| |
| // ---------------------------------------------------------------------------- |
| // Canvas draw operations |
| // ---------------------------------------------------------------------------- |
| |
| void SkiaCanvas::drawColor(int color, SkBlendMode mode) { |
| mCanvas->drawColor(color, mode); |
| } |
| |
| void SkiaCanvas::drawPaint(const SkPaint& paint) { |
| mCanvas->drawPaint(paint); |
| } |
| |
| // ---------------------------------------------------------------------------- |
| // Canvas draw operations: Geometry |
| // ---------------------------------------------------------------------------- |
| |
| void SkiaCanvas::drawPoints(const float* points, int count, const SkPaint& paint, |
| SkCanvas::PointMode mode) { |
| if (CC_UNLIKELY(count < 2 || paint.nothingToDraw())) return; |
| // convert the floats into SkPoints |
| count >>= 1; // now it is the number of points |
| std::unique_ptr<SkPoint[]> pts(new SkPoint[count]); |
| for (int i = 0; i < count; i++) { |
| pts[i].set(points[0], points[1]); |
| points += 2; |
| } |
| mCanvas->drawPoints(mode, count, pts.get(), paint); |
| } |
| |
| void SkiaCanvas::drawPoint(float x, float y, const SkPaint& paint) { |
| mCanvas->drawPoint(x, y, paint); |
| } |
| |
| void SkiaCanvas::drawPoints(const float* points, int count, const SkPaint& paint) { |
| this->drawPoints(points, count, paint, SkCanvas::kPoints_PointMode); |
| } |
| |
| void SkiaCanvas::drawLine(float startX, float startY, float stopX, float stopY, |
| const SkPaint& paint) { |
| mCanvas->drawLine(startX, startY, stopX, stopY, paint); |
| } |
| |
| void SkiaCanvas::drawLines(const float* points, int count, const SkPaint& paint) { |
| if (CC_UNLIKELY(count < 4 || paint.nothingToDraw())) return; |
| this->drawPoints(points, count, paint, SkCanvas::kLines_PointMode); |
| } |
| |
| void SkiaCanvas::drawRect(float left, float top, float right, float bottom, const SkPaint& paint) { |
| if (CC_UNLIKELY(paint.nothingToDraw())) return; |
| mCanvas->drawRect({left, top, right, bottom}, paint); |
| } |
| |
| void SkiaCanvas::drawRegion(const SkRegion& region, const SkPaint& paint) { |
| if (CC_UNLIKELY(paint.nothingToDraw())) return; |
| mCanvas->drawRegion(region, paint); |
| } |
| |
| void SkiaCanvas::drawRoundRect(float left, float top, float right, float bottom, float rx, float ry, |
| const SkPaint& paint) { |
| if (CC_UNLIKELY(paint.nothingToDraw())) return; |
| SkRect rect = SkRect::MakeLTRB(left, top, right, bottom); |
| mCanvas->drawRoundRect(rect, rx, ry, paint); |
| } |
| |
| void SkiaCanvas::drawCircle(float x, float y, float radius, const SkPaint& paint) { |
| if (CC_UNLIKELY(radius <= 0 || paint.nothingToDraw())) return; |
| mCanvas->drawCircle(x, y, radius, paint); |
| } |
| |
| void SkiaCanvas::drawOval(float left, float top, float right, float bottom, const SkPaint& paint) { |
| if (CC_UNLIKELY(paint.nothingToDraw())) return; |
| SkRect oval = SkRect::MakeLTRB(left, top, right, bottom); |
| mCanvas->drawOval(oval, paint); |
| } |
| |
| void SkiaCanvas::drawArc(float left, float top, float right, float bottom, float startAngle, |
| float sweepAngle, bool useCenter, const SkPaint& paint) { |
| if (CC_UNLIKELY(paint.nothingToDraw())) return; |
| SkRect arc = SkRect::MakeLTRB(left, top, right, bottom); |
| if (fabs(sweepAngle) >= 360.0f) { |
| mCanvas->drawOval(arc, paint); |
| } else { |
| mCanvas->drawArc(arc, startAngle, sweepAngle, useCenter, paint); |
| } |
| } |
| |
| void SkiaCanvas::drawPath(const SkPath& path, const SkPaint& paint) { |
| if (CC_UNLIKELY(paint.nothingToDraw())) return; |
| if (CC_UNLIKELY(path.isEmpty() && (!path.isInverseFillType()))) { |
| return; |
| } |
| mCanvas->drawPath(path, paint); |
| } |
| |
| void SkiaCanvas::drawVertices(const SkVertices* vertices, SkBlendMode mode, const SkPaint& paint) { |
| mCanvas->drawVertices(vertices, mode, paint); |
| } |
| |
| // ---------------------------------------------------------------------------- |
| // Canvas draw operations: Bitmaps |
| // ---------------------------------------------------------------------------- |
| |
| const SkPaint* SkiaCanvas::addFilter(const SkPaint* origPaint, SkPaint* tmpPaint, |
| sk_sp<SkColorFilter> colorSpaceFilter) { |
| /* We don't apply the colorSpace filter if this canvas is already wrapped with |
| * a SkColorSpaceXformCanvas since it already takes care of converting the |
| * contents of the bitmap into the appropriate colorspace. The mCanvasWrapper |
| * should only be used if this canvas is backed by a surface/bitmap that is known |
| * to have a non-sRGB colorspace. |
| */ |
| if (!mCanvasWrapper && colorSpaceFilter) { |
| if (origPaint) { |
| *tmpPaint = *origPaint; |
| } |
| |
| if (tmpPaint->getColorFilter()) { |
| tmpPaint->setColorFilter( |
| SkColorFilter::MakeComposeFilter(tmpPaint->refColorFilter(), colorSpaceFilter)); |
| LOG_ALWAYS_FATAL_IF(!tmpPaint->getColorFilter()); |
| } else { |
| tmpPaint->setColorFilter(colorSpaceFilter); |
| } |
| |
| return tmpPaint; |
| } else { |
| return origPaint; |
| } |
| } |
| |
| void SkiaCanvas::drawBitmap(Bitmap& bitmap, float left, float top, const SkPaint* paint) { |
| SkPaint tmpPaint; |
| sk_sp<SkColorFilter> colorFilter; |
| sk_sp<SkImage> image = bitmap.makeImage(&colorFilter); |
| mCanvas->drawImage(image, left, top, addFilter(paint, &tmpPaint, colorFilter)); |
| } |
| |
| void SkiaCanvas::drawBitmap(Bitmap& bitmap, const SkMatrix& matrix, const SkPaint* paint) { |
| SkAutoCanvasRestore acr(mCanvas, true); |
| mCanvas->concat(matrix); |
| |
| SkPaint tmpPaint; |
| sk_sp<SkColorFilter> colorFilter; |
| sk_sp<SkImage> image = bitmap.makeImage(&colorFilter); |
| mCanvas->drawImage(image, 0, 0, addFilter(paint, &tmpPaint, colorFilter)); |
| } |
| |
| void SkiaCanvas::drawBitmap(Bitmap& bitmap, float srcLeft, float srcTop, float srcRight, |
| float srcBottom, float dstLeft, float dstTop, float dstRight, |
| float dstBottom, const SkPaint* paint) { |
| SkRect srcRect = SkRect::MakeLTRB(srcLeft, srcTop, srcRight, srcBottom); |
| SkRect dstRect = SkRect::MakeLTRB(dstLeft, dstTop, dstRight, dstBottom); |
| |
| SkPaint tmpPaint; |
| sk_sp<SkColorFilter> colorFilter; |
| sk_sp<SkImage> image = bitmap.makeImage(&colorFilter); |
| mCanvas->drawImageRect(image, srcRect, dstRect, addFilter(paint, &tmpPaint, colorFilter), |
| SkCanvas::kFast_SrcRectConstraint); |
| } |
| |
| void SkiaCanvas::drawBitmapMesh(Bitmap& bitmap, int meshWidth, int meshHeight, |
| const float* vertices, const int* colors, const SkPaint* paint) { |
| const int ptCount = (meshWidth + 1) * (meshHeight + 1); |
| const int indexCount = meshWidth * meshHeight * 6; |
| uint32_t flags = SkVertices::kHasTexCoords_BuilderFlag; |
| if (colors) { |
| flags |= SkVertices::kHasColors_BuilderFlag; |
| } |
| SkVertices::Builder builder(SkVertices::kTriangles_VertexMode, ptCount, indexCount, flags); |
| memcpy(builder.positions(), vertices, ptCount * sizeof(SkPoint)); |
| if (colors) { |
| memcpy(builder.colors(), colors, ptCount * sizeof(SkColor)); |
| } |
| SkPoint* texs = builder.texCoords(); |
| uint16_t* indices = builder.indices(); |
| |
| // cons up texture coordinates and indices |
| { |
| const SkScalar w = SkIntToScalar(bitmap.width()); |
| const SkScalar h = SkIntToScalar(bitmap.height()); |
| const SkScalar dx = w / meshWidth; |
| const SkScalar dy = h / meshHeight; |
| |
| SkPoint* texsPtr = texs; |
| SkScalar y = 0; |
| for (int i = 0; i <= meshHeight; i++) { |
| if (i == meshHeight) { |
| y = h; // to ensure numerically we hit h exactly |
| } |
| SkScalar x = 0; |
| for (int j = 0; j < meshWidth; j++) { |
| texsPtr->set(x, y); |
| texsPtr += 1; |
| x += dx; |
| } |
| texsPtr->set(w, y); |
| texsPtr += 1; |
| y += dy; |
| } |
| SkASSERT(texsPtr - texs == ptCount); |
| } |
| |
| // cons up indices |
| { |
| uint16_t* indexPtr = indices; |
| int index = 0; |
| for (int i = 0; i < meshHeight; i++) { |
| for (int j = 0; j < meshWidth; j++) { |
| // lower-left triangle |
| *indexPtr++ = index; |
| *indexPtr++ = index + meshWidth + 1; |
| *indexPtr++ = index + meshWidth + 2; |
| // upper-right triangle |
| *indexPtr++ = index; |
| *indexPtr++ = index + meshWidth + 2; |
| *indexPtr++ = index + 1; |
| // bump to the next cell |
| index += 1; |
| } |
| // bump to the next row |
| index += 1; |
| } |
| SkASSERT(indexPtr - indices == indexCount); |
| } |
| |
| // double-check that we have legal indices |
| #ifdef SK_DEBUG |
| { |
| for (int i = 0; i < indexCount; i++) { |
| SkASSERT((unsigned)indices[i] < (unsigned)ptCount); |
| } |
| } |
| #endif |
| |
| // cons-up a shader for the bitmap |
| SkPaint tmpPaint; |
| if (paint) { |
| tmpPaint = *paint; |
| } |
| |
| sk_sp<SkColorFilter> colorFilter; |
| sk_sp<SkImage> image = bitmap.makeImage(&colorFilter); |
| sk_sp<SkShader> shader = |
| image->makeShader(SkShader::kClamp_TileMode, SkShader::kClamp_TileMode); |
| if (colorFilter) { |
| shader = shader->makeWithColorFilter(colorFilter); |
| } |
| tmpPaint.setShader(shader); |
| |
| mCanvas->drawVertices(builder.detach(), SkBlendMode::kModulate, tmpPaint); |
| } |
| |
| void SkiaCanvas::drawNinePatch(Bitmap& bitmap, const Res_png_9patch& chunk, float dstLeft, |
| float dstTop, float dstRight, float dstBottom, |
| const SkPaint* paint) { |
| SkCanvas::Lattice lattice; |
| NinePatchUtils::SetLatticeDivs(&lattice, chunk, bitmap.width(), bitmap.height()); |
| |
| lattice.fRectTypes = nullptr; |
| lattice.fColors = nullptr; |
| int numFlags = 0; |
| if (chunk.numColors > 0 && chunk.numColors == NinePatchUtils::NumDistinctRects(lattice)) { |
| // We can expect the framework to give us a color for every distinct rect. |
| // Skia requires a flag for every rect. |
| numFlags = (lattice.fXCount + 1) * (lattice.fYCount + 1); |
| } |
| |
| SkAutoSTMalloc<25, SkCanvas::Lattice::RectType> flags(numFlags); |
| SkAutoSTMalloc<25, SkColor> colors(numFlags); |
| if (numFlags > 0) { |
| NinePatchUtils::SetLatticeFlags(&lattice, flags.get(), numFlags, chunk, colors.get()); |
| } |
| |
| lattice.fBounds = nullptr; |
| SkRect dst = SkRect::MakeLTRB(dstLeft, dstTop, dstRight, dstBottom); |
| |
| SkPaint tmpPaint; |
| sk_sp<SkColorFilter> colorFilter; |
| sk_sp<SkImage> image = bitmap.makeImage(&colorFilter); |
| mCanvas->drawImageLattice(image.get(), lattice, dst, addFilter(paint, &tmpPaint, colorFilter)); |
| } |
| |
| double SkiaCanvas::drawAnimatedImage(AnimatedImageDrawable* imgDrawable) { |
| return imgDrawable->drawStaging(mCanvas); |
| } |
| |
| void SkiaCanvas::drawVectorDrawable(VectorDrawableRoot* vectorDrawable) { |
| vectorDrawable->drawStaging(this); |
| } |
| |
| // ---------------------------------------------------------------------------- |
| // Canvas draw operations: Text |
| // ---------------------------------------------------------------------------- |
| |
| void SkiaCanvas::drawGlyphs(ReadGlyphFunc glyphFunc, int count, const SkPaint& paint, float x, |
| float y, float boundsLeft, float boundsTop, float boundsRight, |
| float boundsBottom, float totalAdvance) { |
| if (count <= 0 || paint.nothingToDraw()) return; |
| // Set align to left for drawing, as we don't want individual |
| // glyphs centered or right-aligned; the offset above takes |
| // care of all alignment. |
| SkPaint paintCopy(paint); |
| paintCopy.setTextAlign(SkPaint::kLeft_Align); |
| SkASSERT(paintCopy.getTextEncoding() == SkPaint::kGlyphID_TextEncoding); |
| // Stroke with a hairline is drawn on HW with a fill style for compatibility with Android O and |
| // older. |
| if (!mCanvasOwned && sApiLevel <= 27 && paintCopy.getStrokeWidth() <= 0 |
| && paintCopy.getStyle() == SkPaint::kStroke_Style) { |
| paintCopy.setStyle(SkPaint::kFill_Style); |
| } |
| |
| SkRect bounds = |
| SkRect::MakeLTRB(boundsLeft + x, boundsTop + y, boundsRight + x, boundsBottom + y); |
| |
| SkTextBlobBuilder builder; |
| const SkTextBlobBuilder::RunBuffer& buffer = builder.allocRunPos(paintCopy, count, &bounds); |
| glyphFunc(buffer.glyphs, buffer.pos); |
| |
| sk_sp<SkTextBlob> textBlob(builder.make()); |
| mCanvas->drawTextBlob(textBlob, 0, 0, paintCopy); |
| drawTextDecorations(x, y, totalAdvance, paintCopy); |
| } |
| |
| void SkiaCanvas::drawLayoutOnPath(const minikin::Layout& layout, float hOffset, float vOffset, |
| const SkPaint& paint, const SkPath& path, size_t start, |
| size_t end) { |
| // Set align to left for drawing, as we don't want individual |
| // glyphs centered or right-aligned; the offsets take care of |
| // that portion of the alignment. |
| SkPaint paintCopy(paint); |
| paintCopy.setTextAlign(SkPaint::kLeft_Align); |
| SkASSERT(paintCopy.getTextEncoding() == SkPaint::kGlyphID_TextEncoding); |
| |
| const int N = end - start; |
| SkAutoSTMalloc<1024, uint8_t> storage(N * (sizeof(uint16_t) + sizeof(SkRSXform))); |
| SkRSXform* xform = (SkRSXform*)storage.get(); |
| uint16_t* glyphs = (uint16_t*)(xform + N); |
| SkPathMeasure meas(path, false); |
| |
| for (size_t i = start; i < end; i++) { |
| glyphs[i - start] = layout.getGlyphId(i); |
| float halfWidth = layout.getCharAdvance(i) * 0.5f; |
| float x = hOffset + layout.getX(i) + halfWidth; |
| float y = vOffset + layout.getY(i); |
| |
| SkPoint pos; |
| SkVector tan; |
| if (!meas.getPosTan(x, &pos, &tan)) { |
| pos.set(x, y); |
| tan.set(1, 0); |
| } |
| xform[i - start].fSCos = tan.x(); |
| xform[i - start].fSSin = tan.y(); |
| xform[i - start].fTx = pos.x() - tan.y() * y - halfWidth * tan.x(); |
| xform[i - start].fTy = pos.y() + tan.x() * y - halfWidth * tan.y(); |
| } |
| |
| this->asSkCanvas()->drawTextRSXform(glyphs, sizeof(uint16_t) * N, xform, nullptr, paintCopy); |
| } |
| |
| // ---------------------------------------------------------------------------- |
| // Canvas draw operations: Animations |
| // ---------------------------------------------------------------------------- |
| |
| void SkiaCanvas::drawRoundRect(uirenderer::CanvasPropertyPrimitive* left, |
| uirenderer::CanvasPropertyPrimitive* top, |
| uirenderer::CanvasPropertyPrimitive* right, |
| uirenderer::CanvasPropertyPrimitive* bottom, |
| uirenderer::CanvasPropertyPrimitive* rx, |
| uirenderer::CanvasPropertyPrimitive* ry, |
| uirenderer::CanvasPropertyPaint* paint) { |
| sk_sp<uirenderer::skiapipeline::AnimatedRoundRect> drawable( |
| new uirenderer::skiapipeline::AnimatedRoundRect(left, top, right, bottom, rx, ry, |
| paint)); |
| mCanvas->drawDrawable(drawable.get()); |
| } |
| |
| void SkiaCanvas::drawCircle(uirenderer::CanvasPropertyPrimitive* x, |
| uirenderer::CanvasPropertyPrimitive* y, |
| uirenderer::CanvasPropertyPrimitive* radius, |
| uirenderer::CanvasPropertyPaint* paint) { |
| sk_sp<uirenderer::skiapipeline::AnimatedCircle> drawable( |
| new uirenderer::skiapipeline::AnimatedCircle(x, y, radius, paint)); |
| mCanvas->drawDrawable(drawable.get()); |
| } |
| |
| // ---------------------------------------------------------------------------- |
| // Canvas draw operations: View System |
| // ---------------------------------------------------------------------------- |
| |
| void SkiaCanvas::drawLayer(uirenderer::DeferredLayerUpdater* layerUpdater) { |
| LOG_ALWAYS_FATAL("SkiaCanvas can't directly draw Layers"); |
| } |
| |
| void SkiaCanvas::drawRenderNode(uirenderer::RenderNode* renderNode) { |
| LOG_ALWAYS_FATAL("SkiaCanvas can't directly draw RenderNodes"); |
| } |
| |
| void SkiaCanvas::callDrawGLFunction(Functor* functor, |
| uirenderer::GlFunctorLifecycleListener* listener) { |
| LOG_ALWAYS_FATAL("SkiaCanvas can't directly draw GL Content"); |
| } |
| |
| } // namespace android |