| /* |
| * Copyright (C) 2016 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 "RenderNodeDrawable.h" |
| #include "RenderNode.h" |
| #include "SkiaDisplayList.h" |
| #include "SkiaPipeline.h" |
| #include "utils/TraceUtils.h" |
| |
| namespace android { |
| namespace uirenderer { |
| namespace skiapipeline { |
| |
| void RenderNodeDrawable::drawBackwardsProjectedNodes(SkCanvas* canvas, const SkiaDisplayList& displayList, |
| int nestLevel) { |
| LOG_ALWAYS_FATAL_IF(0 == nestLevel && !displayList.mProjectionReceiver); |
| for (auto& child : displayList.mChildNodes) { |
| const RenderProperties& childProperties = child.getNodeProperties(); |
| |
| //immediate children cannot be projected on their parent |
| if (childProperties.getProjectBackwards() && nestLevel > 0) { |
| SkAutoCanvasRestore acr2(canvas, true); |
| //Apply recorded matrix, which is a total matrix saved at recording time to avoid |
| //replaying all DL commands. |
| canvas->concat(child.getRecordedMatrix()); |
| child.drawContent(canvas); |
| } |
| |
| //skip walking sub-nodes if current display list contains a receiver with exception of |
| //level 0, which is a known receiver |
| if (0 == nestLevel || !displayList.containsProjectionReceiver()) { |
| SkAutoCanvasRestore acr(canvas, true); |
| SkMatrix nodeMatrix; |
| mat4 hwuiMatrix(child.getRecordedMatrix()); |
| auto childNode = child.getRenderNode(); |
| childNode->applyViewPropertyTransforms(hwuiMatrix); |
| hwuiMatrix.copyTo(nodeMatrix); |
| canvas->concat(nodeMatrix); |
| SkiaDisplayList* childDisplayList = static_cast<SkiaDisplayList*>( |
| (const_cast<DisplayList*>(childNode->getDisplayList()))); |
| if (childDisplayList) { |
| drawBackwardsProjectedNodes(canvas, *childDisplayList, nestLevel+1); |
| } |
| } |
| } |
| } |
| |
| static void clipOutline(const Outline& outline, SkCanvas* canvas, const SkRect* pendingClip) { |
| Rect possibleRect; |
| float radius; |
| |
| /* To match the existing HWUI behavior we only supports rectangles or |
| * rounded rectangles; passing in a more complicated outline fails silently. |
| */ |
| if (!outline.getAsRoundRect(&possibleRect, &radius)) { |
| if (pendingClip) { |
| canvas->clipRect(*pendingClip); |
| } |
| return; |
| } |
| |
| SkRect rect = possibleRect.toSkRect(); |
| if (radius != 0.0f) { |
| if (pendingClip && !pendingClip->contains(rect)) { |
| canvas->clipRect(*pendingClip); |
| } |
| canvas->clipRRect(SkRRect::MakeRectXY(rect, radius, radius), SkClipOp::kIntersect, true); |
| } else { |
| if (pendingClip) { |
| (void)rect.intersect(*pendingClip); |
| } |
| canvas->clipRect(rect); |
| } |
| } |
| |
| const RenderProperties& RenderNodeDrawable::getNodeProperties() const { |
| return mRenderNode->properties(); |
| } |
| |
| void RenderNodeDrawable::onDraw(SkCanvas* canvas) { |
| //negative and positive Z order are drawn out of order, if this render node drawable is in |
| //a reordering section |
| if ((!mInReorderingSection) || MathUtils::isZero(mRenderNode->properties().getZ())) { |
| this->forceDraw(canvas); |
| } |
| } |
| |
| void RenderNodeDrawable::forceDraw(SkCanvas* canvas) { |
| RenderNode* renderNode = mRenderNode.get(); |
| if (SkiaPipeline::skpCaptureEnabled()) { |
| SkRect dimensions = SkRect::MakeWH(renderNode->getWidth(), renderNode->getHeight()); |
| canvas->drawAnnotation(dimensions, renderNode->getName(), nullptr); |
| } |
| |
| // We only respect the nothingToDraw check when we are composing a layer. This |
| // ensures that we paint the layer even if it is not currently visible in the |
| // event that the properties change and it becomes visible. |
| if (!renderNode->isRenderable() || (renderNode->nothingToDraw() && mComposeLayer)) { |
| return; |
| } |
| |
| SkASSERT(renderNode->getDisplayList()->isSkiaDL()); |
| SkiaDisplayList* displayList = (SkiaDisplayList*)renderNode->getDisplayList(); |
| |
| SkAutoCanvasRestore acr(canvas, true); |
| const RenderProperties& properties = this->getNodeProperties(); |
| //pass this outline to the children that may clip backward projected nodes |
| displayList->mProjectedOutline = displayList->containsProjectionReceiver() |
| ? &properties.getOutline() : nullptr; |
| if (!properties.getProjectBackwards()) { |
| drawContent(canvas); |
| if (mProjectedDisplayList) { |
| acr.restore(); //draw projected children using parent matrix |
| LOG_ALWAYS_FATAL_IF(!mProjectedDisplayList->mProjectedOutline); |
| const bool shouldClip = mProjectedDisplayList->mProjectedOutline->getPath(); |
| SkAutoCanvasRestore acr2(canvas, shouldClip); |
| canvas->setMatrix(mProjectedDisplayList->mProjectedReceiverParentMatrix); |
| if (shouldClip) { |
| clipOutline(*mProjectedDisplayList->mProjectedOutline, canvas, nullptr); |
| } |
| drawBackwardsProjectedNodes(canvas, *mProjectedDisplayList); |
| } |
| } |
| displayList->mProjectedOutline = nullptr; |
| } |
| |
| static bool layerNeedsPaint(const LayerProperties& properties, |
| float alphaMultiplier, SkPaint* paint) { |
| if (alphaMultiplier < 1.0f |
| || properties.alpha() < 255 |
| || properties.xferMode() != SkBlendMode::kSrcOver |
| || properties.colorFilter() != nullptr) { |
| paint->setAlpha(properties.alpha() * alphaMultiplier); |
| paint->setBlendMode(properties.xferMode()); |
| paint->setColorFilter(sk_ref_sp(properties.colorFilter())); |
| return true; |
| } |
| return false; |
| } |
| |
| void RenderNodeDrawable::drawContent(SkCanvas* canvas) const { |
| RenderNode* renderNode = mRenderNode.get(); |
| float alphaMultiplier = 1.0f; |
| const RenderProperties& properties = renderNode->properties(); |
| |
| // If we are drawing the contents of layer, we don't want to apply any of |
| // the RenderNode's properties during this pass. Those will all be applied |
| // when the layer is composited. |
| if (mComposeLayer) { |
| setViewProperties(properties, canvas, &alphaMultiplier); |
| } |
| SkiaDisplayList* displayList = (SkiaDisplayList*)mRenderNode->getDisplayList(); |
| if (displayList->containsProjectionReceiver()) { |
| displayList->mProjectedReceiverParentMatrix = canvas->getTotalMatrix(); |
| } |
| |
| //TODO should we let the bound of the drawable do this for us? |
| const SkRect bounds = SkRect::MakeWH(properties.getWidth(), properties.getHeight()); |
| bool quickRejected = properties.getClipToBounds() && canvas->quickReject(bounds); |
| if (!quickRejected) { |
| SkiaDisplayList* displayList = (SkiaDisplayList*)renderNode->getDisplayList(); |
| const LayerProperties& layerProperties = properties.layerProperties(); |
| // composing a hardware layer |
| if (renderNode->getLayerSurface() && mComposeLayer) { |
| SkASSERT(properties.effectiveLayerType() == LayerType::RenderLayer); |
| SkPaint* paint = nullptr; |
| SkPaint tmpPaint; |
| if (layerNeedsPaint(layerProperties, alphaMultiplier, &tmpPaint)) { |
| paint = &tmpPaint; |
| } |
| renderNode->getLayerSurface()->draw(canvas, 0, 0, paint); |
| |
| if (!renderNode->getSkiaLayer()->hasRenderedSinceRepaint) { |
| renderNode->getSkiaLayer()->hasRenderedSinceRepaint = true; |
| if (CC_UNLIKELY(Properties::debugLayersUpdates)) { |
| SkPaint layerPaint; |
| layerPaint.setColor(0x7f00ff00); |
| canvas->drawRect(bounds, layerPaint); |
| } else if (CC_UNLIKELY(Properties::debugOverdraw)) { |
| // Render transparent rect to increment overdraw for repaint area. |
| // This can be "else if" because flashing green on layer updates |
| // will also increment the overdraw if it happens to be turned on. |
| SkPaint transparentPaint; |
| transparentPaint.setColor(SK_ColorTRANSPARENT); |
| canvas->drawRect(bounds, transparentPaint); |
| } |
| } |
| |
| // composing a software layer with alpha |
| } else if (properties.effectiveLayerType() == LayerType::Software) { |
| SkPaint paint; |
| bool needsLayer = layerNeedsPaint(layerProperties, alphaMultiplier, &paint); |
| if (needsLayer) { |
| canvas->saveLayer(bounds, &paint); |
| } |
| displayList->draw(canvas); |
| if (needsLayer) { |
| canvas->restore(); |
| } |
| } else { |
| displayList->draw(canvas); |
| } |
| } |
| } |
| |
| void RenderNodeDrawable::setViewProperties(const RenderProperties& properties, SkCanvas* canvas, |
| float* alphaMultiplier) { |
| if (properties.getLeft() != 0 || properties.getTop() != 0) { |
| canvas->translate(properties.getLeft(), properties.getTop()); |
| } |
| if (properties.getStaticMatrix()) { |
| canvas->concat(*properties.getStaticMatrix()); |
| } else if (properties.getAnimationMatrix()) { |
| canvas->concat(*properties.getAnimationMatrix()); |
| } |
| if (properties.hasTransformMatrix()) { |
| if (properties.isTransformTranslateOnly()) { |
| canvas->translate(properties.getTranslationX(), properties.getTranslationY()); |
| } else { |
| canvas->concat(*properties.getTransformMatrix()); |
| } |
| } |
| const bool isLayer = properties.effectiveLayerType() != LayerType::None; |
| int clipFlags = properties.getClippingFlags(); |
| if (properties.getAlpha() < 1) { |
| if (isLayer) { |
| clipFlags &= ~CLIP_TO_BOUNDS; // bounds clipping done by layer |
| } |
| if (CC_LIKELY(isLayer || !properties.getHasOverlappingRendering())) { |
| *alphaMultiplier = properties.getAlpha(); |
| } else { |
| // savelayer needed to create an offscreen buffer |
| Rect layerBounds(0, 0, properties.getWidth(), properties.getHeight()); |
| if (clipFlags) { |
| properties.getClippingRectForFlags(clipFlags, &layerBounds); |
| clipFlags = 0; // all clipping done by savelayer |
| } |
| SkRect bounds = SkRect::MakeLTRB(layerBounds.left, layerBounds.top, |
| layerBounds.right, layerBounds.bottom); |
| canvas->saveLayerAlpha(&bounds, (int) (properties.getAlpha() * 255)); |
| } |
| |
| if (CC_UNLIKELY(ATRACE_ENABLED() && properties.promotedToLayer())) { |
| // pretend alpha always causes savelayer to warn about |
| // performance problem affecting old versions |
| ATRACE_FORMAT("alpha caused saveLayer %dx%d", properties.getWidth(), |
| properties.getHeight()); |
| } |
| } |
| |
| const SkRect* pendingClip = nullptr; |
| SkRect clipRect; |
| |
| if (clipFlags) { |
| Rect tmpRect; |
| properties.getClippingRectForFlags(clipFlags, &tmpRect); |
| clipRect = tmpRect.toSkRect(); |
| pendingClip = &clipRect; |
| } |
| |
| if (properties.getRevealClip().willClip()) { |
| canvas->clipPath(*properties.getRevealClip().getPath(), SkClipOp::kIntersect, true); |
| } else if (properties.getOutline().willClip()) { |
| clipOutline(properties.getOutline(), canvas, pendingClip); |
| pendingClip = nullptr; |
| } |
| |
| if (pendingClip) { |
| canvas->clipRect(*pendingClip); |
| } |
| } |
| |
| }; // namespace skiapipeline |
| }; // namespace uirenderer |
| }; // namespace android |
