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/*
* Copyright (C) 2010 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 "DisplayListCanvas.h"
#include "ResourceCache.h"
#include "DeferredDisplayList.h"
#include "DeferredLayerUpdater.h"
#include "DisplayListOp.h"
#include "RenderNode.h"
#include "utils/PaintUtils.h"
#include <SkCamera.h>
#include <SkCanvas.h>
#include <private/hwui/DrawGlInfo.h>
namespace android {
namespace uirenderer {
DisplayListCanvas::DisplayListCanvas(int width, int height)
: mState(*this)
, mResourceCache(ResourceCache::getInstance())
, mDisplayListData(nullptr)
, mTranslateX(0.0f)
, mTranslateY(0.0f)
, mHasDeferredTranslate(false)
, mDeferredBarrierType(kBarrier_None)
, mHighContrastText(false)
, mRestoreSaveCount(-1) {
reset(width, height);
}
DisplayListCanvas::~DisplayListCanvas() {
LOG_ALWAYS_FATAL_IF(mDisplayListData,
"Destroyed a DisplayListCanvas during a record!");
}
void DisplayListCanvas::reset(int width, int height) {
LOG_ALWAYS_FATAL_IF(mDisplayListData,
"prepareDirty called a second time during a recording!");
mDisplayListData = new DisplayListData();
mState.setViewport(width, height);
mState.initializeSaveStack(0, 0, mState.getWidth(), mState.getHeight(), Vector3());
mDeferredBarrierType = kBarrier_InOrder;
mState.setDirtyClip(false);
mRestoreSaveCount = -1;
}
///////////////////////////////////////////////////////////////////////////////
// Operations
///////////////////////////////////////////////////////////////////////////////
DisplayListData* DisplayListCanvas::finishRecording() {
flushRestoreToCount();
flushTranslate();
mPaintMap.clear();
mRegionMap.clear();
mPathMap.clear();
DisplayListData* data = mDisplayListData;
mDisplayListData = nullptr;
mSkiaCanvasProxy.reset(nullptr);
return data;
}
void DisplayListCanvas::callDrawGLFunction(Functor *functor) {
addDrawOp(new (alloc()) DrawFunctorOp(functor));
mDisplayListData->functors.add(functor);
}
SkCanvas* DisplayListCanvas::asSkCanvas() {
LOG_ALWAYS_FATAL_IF(!mDisplayListData,
"attempting to get an SkCanvas when we are not recording!");
if (!mSkiaCanvasProxy) {
mSkiaCanvasProxy.reset(new SkiaCanvasProxy(this));
}
// SkCanvas instances default to identity transform, but should inherit
// the state of this Canvas; if this code was in the SkiaCanvasProxy
// constructor, we couldn't cache mSkiaCanvasProxy.
SkMatrix parentTransform;
getMatrix(&parentTransform);
mSkiaCanvasProxy.get()->setMatrix(parentTransform);
return mSkiaCanvasProxy.get();
}
int DisplayListCanvas::save(SkCanvas::SaveFlags flags) {
addStateOp(new (alloc()) SaveOp((int) flags));
return mState.save((int) flags);
}
void DisplayListCanvas::restore() {
if (mRestoreSaveCount < 0) {
restoreToCount(getSaveCount() - 1);
return;
}
mRestoreSaveCount--;
flushTranslate();
mState.restore();
}
void DisplayListCanvas::restoreToCount(int saveCount) {
mRestoreSaveCount = saveCount;
flushTranslate();
mState.restoreToCount(saveCount);
}
int DisplayListCanvas::saveLayer(float left, float top, float right, float bottom,
const SkPaint* paint, SkCanvas::SaveFlags flags) {
// force matrix/clip isolation for layer
flags |= SkCanvas::kClip_SaveFlag | SkCanvas::kMatrix_SaveFlag;
paint = refPaint(paint);
addStateOp(new (alloc()) SaveLayerOp(left, top, right, bottom, paint, (int) flags));
return mState.save((int) flags);
}
void DisplayListCanvas::translate(float dx, float dy) {
if (dx == 0.0f && dy == 0.0f) return;
mHasDeferredTranslate = true;
mTranslateX += dx;
mTranslateY += dy;
flushRestoreToCount();
mState.translate(dx, dy, 0.0f);
}
void DisplayListCanvas::rotate(float degrees) {
if (degrees == 0.0f) return;
addStateOp(new (alloc()) RotateOp(degrees));
mState.rotate(degrees);
}
void DisplayListCanvas::scale(float sx, float sy) {
if (sx == 1.0f && sy == 1.0f) return;
addStateOp(new (alloc()) ScaleOp(sx, sy));
mState.scale(sx, sy);
}
void DisplayListCanvas::skew(float sx, float sy) {
addStateOp(new (alloc()) SkewOp(sx, sy));
mState.skew(sx, sy);
}
void DisplayListCanvas::setMatrix(const SkMatrix& matrix) {
addStateOp(new (alloc()) SetMatrixOp(matrix));
mState.setMatrix(matrix);
}
void DisplayListCanvas::setLocalMatrix(const SkMatrix& matrix) {
addStateOp(new (alloc()) SetLocalMatrixOp(matrix));
mState.setMatrix(matrix);
}
void DisplayListCanvas::concat(const SkMatrix& matrix) {
addStateOp(new (alloc()) ConcatMatrixOp(matrix));
mState.concatMatrix(matrix);
}
bool DisplayListCanvas::getClipBounds(SkRect* outRect) const {
Rect bounds = mState.getLocalClipBounds();
*outRect = SkRect::MakeLTRB(bounds.left, bounds.top, bounds.right, bounds.bottom);
return !(outRect->isEmpty());
}
bool DisplayListCanvas::quickRejectRect(float left, float top, float right, float bottom) const {
return mState.quickRejectConservative(left, top, right, bottom);
}
bool DisplayListCanvas::quickRejectPath(const SkPath& path) const {
SkRect bounds = path.getBounds();
return mState.quickRejectConservative(bounds.fLeft, bounds.fTop, bounds.fRight, bounds.fBottom);
}
bool DisplayListCanvas::clipRect(float left, float top, float right, float bottom,
SkRegion::Op op) {
addStateOp(new (alloc()) ClipRectOp(left, top, right, bottom, op));
return mState.clipRect(left, top, right, bottom, op);
}
bool DisplayListCanvas::clipPath(const SkPath* path, SkRegion::Op op) {
path = refPath(path);
addStateOp(new (alloc()) ClipPathOp(path, op));
return mState.clipPath(path, op);
}
bool DisplayListCanvas::clipRegion(const SkRegion* region, SkRegion::Op op) {
region = refRegion(region);
addStateOp(new (alloc()) ClipRegionOp(region, op));
return mState.clipRegion(region, op);
}
void DisplayListCanvas::drawRenderNode(RenderNode* renderNode) {
LOG_ALWAYS_FATAL_IF(!renderNode, "missing rendernode");
DrawRenderNodeOp* op = new (alloc()) DrawRenderNodeOp(
renderNode,
*mState.currentTransform(),
mState.clipIsSimple());
addRenderNodeOp(op);
}
void DisplayListCanvas::drawLayer(DeferredLayerUpdater* layerHandle, float x, float y) {
// We ref the DeferredLayerUpdater due to its thread-safe ref-counting
// semantics.
mDisplayListData->ref(layerHandle);
addDrawOp(new (alloc()) DrawLayerOp(layerHandle->backingLayer(), x, y));
}
void DisplayListCanvas::drawBitmap(const SkBitmap* bitmap, const SkPaint* paint) {
bitmap = refBitmap(*bitmap);
paint = refPaint(paint);
addDrawOp(new (alloc()) DrawBitmapOp(bitmap, paint));
}
void DisplayListCanvas::drawBitmap(const SkBitmap& bitmap, float left, float top,
const SkPaint* paint) {
save(SkCanvas::kMatrix_SaveFlag);
translate(left, top);
drawBitmap(&bitmap, paint);
restore();
}
void DisplayListCanvas::drawBitmap(const SkBitmap& bitmap, const SkMatrix& matrix,
const SkPaint* paint) {
if (matrix.isIdentity()) {
drawBitmap(&bitmap, paint);
} else if (!(matrix.getType() & ~(SkMatrix::kScale_Mask | SkMatrix::kTranslate_Mask))) {
// SkMatrix::isScaleTranslate() not available in L
SkRect src;
SkRect dst;
bitmap.getBounds(&src);
matrix.mapRect(&dst, src);
drawBitmap(bitmap, src.fLeft, src.fTop, src.fRight, src.fBottom,
dst.fLeft, dst.fTop, dst.fRight, dst.fBottom, paint);
} else {
save(SkCanvas::kMatrix_SaveFlag);
concat(matrix);
drawBitmap(&bitmap, paint);
restore();
}
}
void DisplayListCanvas::drawBitmap(const SkBitmap& bitmap, float srcLeft, float srcTop,
float srcRight, float srcBottom, float dstLeft, float dstTop,
float dstRight, float dstBottom, const SkPaint* paint) {
if (srcLeft == 0 && srcTop == 0
&& srcRight == bitmap.width()
&& srcBottom == bitmap.height()
&& (srcBottom - srcTop == dstBottom - dstTop)
&& (srcRight - srcLeft == dstRight - dstLeft)) {
// transform simple rect to rect drawing case into position bitmap ops, since they merge
save(SkCanvas::kMatrix_SaveFlag);
translate(dstLeft, dstTop);
drawBitmap(&bitmap, paint);
restore();
} else {
paint = refPaint(paint);
if (paint && paint->getShader()) {
float scaleX = (dstRight - dstLeft) / (srcRight - srcLeft);
float scaleY = (dstBottom - dstTop) / (srcBottom - srcTop);
if (!MathUtils::areEqual(scaleX, 1.0f) || !MathUtils::areEqual(scaleY, 1.0f)) {
// Apply the scale transform on the canvas, so that the shader
// effectively calculates positions relative to src rect space
save(SkCanvas::kMatrix_SaveFlag);
translate(dstLeft, dstTop);
scale(scaleX, scaleY);
dstLeft = 0.0f;
dstTop = 0.0f;
dstRight = srcRight - srcLeft;
dstBottom = srcBottom - srcTop;
addDrawOp(new (alloc()) DrawBitmapRectOp(refBitmap(bitmap),
srcLeft, srcTop, srcRight, srcBottom,
dstLeft, dstTop, dstRight, dstBottom, paint));
restore();
return;
}
}
addDrawOp(new (alloc()) DrawBitmapRectOp(refBitmap(bitmap),
srcLeft, srcTop, srcRight, srcBottom,
dstLeft, dstTop, dstRight, dstBottom, paint));
}
}
void DisplayListCanvas::drawBitmapMesh(const SkBitmap& bitmap, int meshWidth, int meshHeight,
const float* vertices, const int* colors, const SkPaint* paint) {
int vertexCount = (meshWidth + 1) * (meshHeight + 1);
vertices = refBuffer<float>(vertices, vertexCount * 2); // 2 floats per vertex
paint = refPaint(paint);
colors = refBuffer<int>(colors, vertexCount); // 1 color per vertex
addDrawOp(new (alloc()) DrawBitmapMeshOp(refBitmap(bitmap), meshWidth, meshHeight,
vertices, colors, paint));
}
void DisplayListCanvas::drawPatch(const SkBitmap& bitmap, const Res_png_9patch* patch,
float left, float top, float right, float bottom, const SkPaint* paint) {
const SkBitmap* bitmapPtr = refBitmap(bitmap);
patch = refPatch(patch);
paint = refPaint(paint);
addDrawOp(new (alloc()) DrawPatchOp(bitmapPtr, patch, left, top, right, bottom, paint));
}
void DisplayListCanvas::drawColor(int color, SkXfermode::Mode mode) {
addDrawOp(new (alloc()) DrawColorOp(color, mode));
}
void DisplayListCanvas::drawPaint(const SkPaint& paint) {
SkRect bounds;
if (getClipBounds(&bounds)) {
drawRect(bounds.fLeft, bounds.fTop, bounds.fRight, bounds.fBottom, paint);
}
}
void DisplayListCanvas::drawRect(float left, float top, float right, float bottom,
const SkPaint& paint) {
addDrawOp(new (alloc()) DrawRectOp(left, top, right, bottom, refPaint(&paint)));
}
void DisplayListCanvas::drawRoundRect(float left, float top, float right, float bottom,
float rx, float ry, const SkPaint& paint) {
addDrawOp(new (alloc()) DrawRoundRectOp(left, top, right, bottom, rx, ry, refPaint(&paint)));
}
void DisplayListCanvas::drawRoundRect(
CanvasPropertyPrimitive* left, CanvasPropertyPrimitive* top,
CanvasPropertyPrimitive* right, CanvasPropertyPrimitive* bottom,
CanvasPropertyPrimitive* rx, CanvasPropertyPrimitive* ry,
CanvasPropertyPaint* paint) {
mDisplayListData->ref(left);
mDisplayListData->ref(top);
mDisplayListData->ref(right);
mDisplayListData->ref(bottom);
mDisplayListData->ref(rx);
mDisplayListData->ref(ry);
mDisplayListData->ref(paint);
refBitmapsInShader(paint->value.getShader());
addDrawOp(new (alloc()) DrawRoundRectPropsOp(&left->value, &top->value,
&right->value, &bottom->value, &rx->value, &ry->value, &paint->value));
}
void DisplayListCanvas::drawCircle(float x, float y, float radius, const SkPaint& paint) {
addDrawOp(new (alloc()) DrawCircleOp(x, y, radius, refPaint(&paint)));
}
void DisplayListCanvas::drawCircle(CanvasPropertyPrimitive* x, CanvasPropertyPrimitive* y,
CanvasPropertyPrimitive* radius, CanvasPropertyPaint* paint) {
mDisplayListData->ref(x);
mDisplayListData->ref(y);
mDisplayListData->ref(radius);
mDisplayListData->ref(paint);
refBitmapsInShader(paint->value.getShader());
addDrawOp(new (alloc()) DrawCirclePropsOp(&x->value, &y->value,
&radius->value, &paint->value));
}
void DisplayListCanvas::drawOval(float left, float top, float right, float bottom,
const SkPaint& paint) {
addDrawOp(new (alloc()) DrawOvalOp(left, top, right, bottom, refPaint(&paint)));
}
void DisplayListCanvas::drawArc(float left, float top, float right, float bottom,
float startAngle, float sweepAngle, bool useCenter, const SkPaint& paint) {
if (fabs(sweepAngle) >= 360.0f) {
drawOval(left, top, right, bottom, paint);
} else {
addDrawOp(new (alloc()) DrawArcOp(left, top, right, bottom,
startAngle, sweepAngle, useCenter, refPaint(&paint)));
}
}
void DisplayListCanvas::drawPath(const SkPath& path, const SkPaint& paint) {
addDrawOp(new (alloc()) DrawPathOp(refPath(&path), refPaint(&paint)));
}
void DisplayListCanvas::drawLines(const float* points, int count, const SkPaint& paint) {
points = refBuffer<float>(points, count);
addDrawOp(new (alloc()) DrawLinesOp(points, count, refPaint(&paint)));
}
void DisplayListCanvas::drawPoints(const float* points, int count, const SkPaint& paint) {
points = refBuffer<float>(points, count);
addDrawOp(new (alloc()) DrawPointsOp(points, count, refPaint(&paint)));
}
void DisplayListCanvas::drawTextOnPath(const uint16_t* glyphs, int count,
const SkPath& path, float hOffset, float vOffset, const SkPaint& paint) {
if (!glyphs || count <= 0) return;
int bytesCount = 2 * count;
DrawOp* op = new (alloc()) DrawTextOnPathOp(refText((const char*) glyphs, bytesCount),
bytesCount, count, refPath(&path),
hOffset, vOffset, refPaint(&paint));
addDrawOp(op);
}
void DisplayListCanvas::drawPosText(const uint16_t* text, const float* positions,
int count, int posCount, const SkPaint& paint) {
if (!text || count <= 0) return;
int bytesCount = 2 * count;
positions = refBuffer<float>(positions, count * 2);
DrawOp* op = new (alloc()) DrawPosTextOp(refText((const char*) text, bytesCount),
bytesCount, count, positions, refPaint(&paint));
addDrawOp(op);
}
void DisplayListCanvas::drawText(const uint16_t* glyphs, const float* positions,
int count, const SkPaint& paint, float x, float y,
float boundsLeft, float boundsTop, float boundsRight, float boundsBottom,
float totalAdvance) {
if (!glyphs || count <= 0 || PaintUtils::paintWillNotDrawText(paint)) return;
int bytesCount = count * 2;
const char* text = refText((const char*) glyphs, bytesCount);
positions = refBuffer<float>(positions, count * 2);
Rect bounds(boundsLeft, boundsTop, boundsRight, boundsBottom);
DrawOp* op = new (alloc()) DrawTextOp(text, bytesCount, count,
x, y, positions, refPaint(&paint), totalAdvance, bounds);
addDrawOp(op);
}
void DisplayListCanvas::drawRegion(const SkRegion& region, const SkPaint& paint) {
if (paint.getStyle() != SkPaint::kFill_Style ||
(paint.isAntiAlias() && !mState.currentTransform()->isSimple())) {
SkRegion::Iterator it(region);
while (!it.done()) {
const SkIRect& r = it.rect();
drawRect(r.fLeft, r.fTop, r.fRight, r.fBottom, paint);
it.next();
}
} else {
int count = 0;
Vector<float> rects;
SkRegion::Iterator it(region);
while (!it.done()) {
const SkIRect& r = it.rect();
rects.push(r.fLeft);
rects.push(r.fTop);
rects.push(r.fRight);
rects.push(r.fBottom);
count += 4;
it.next();
}
drawRects(rects.array(), count, &paint);
}
}
void DisplayListCanvas::drawRects(const float* rects, int count, const SkPaint* paint) {
if (count <= 0) return;
rects = refBuffer<float>(rects, count);
paint = refPaint(paint);
addDrawOp(new (alloc()) DrawRectsOp(rects, count, paint));
}
void DisplayListCanvas::setDrawFilter(SkDrawFilter* filter) {
mDrawFilter.reset(SkSafeRef(filter));
}
void DisplayListCanvas::insertReorderBarrier(bool enableReorder) {
flushRestoreToCount();
flushTranslate();
mDeferredBarrierType = enableReorder ? kBarrier_OutOfOrder : kBarrier_InOrder;
}
void DisplayListCanvas::flushRestoreToCount() {
if (mRestoreSaveCount >= 0) {
addOpAndUpdateChunk(new (alloc()) RestoreToCountOp(mRestoreSaveCount));
mRestoreSaveCount = -1;
}
}
void DisplayListCanvas::flushTranslate() {
if (mHasDeferredTranslate) {
if (mTranslateX != 0.0f || mTranslateY != 0.0f) {
addOpAndUpdateChunk(new (alloc()) TranslateOp(mTranslateX, mTranslateY));
mTranslateX = mTranslateY = 0.0f;
}
mHasDeferredTranslate = false;
}
}
size_t DisplayListCanvas::addOpAndUpdateChunk(DisplayListOp* op) {
int insertIndex = mDisplayListData->displayListOps.size();
mDisplayListData->displayListOps.push_back(op);
if (mDeferredBarrierType != kBarrier_None) {
// op is first in new chunk
mDisplayListData->chunks.emplace_back();
DisplayListData::Chunk& newChunk = mDisplayListData->chunks.back();
newChunk.beginOpIndex = insertIndex;
newChunk.endOpIndex = insertIndex + 1;
newChunk.reorderChildren = (mDeferredBarrierType == kBarrier_OutOfOrder);
int nextChildIndex = mDisplayListData->children().size();
newChunk.beginChildIndex = newChunk.endChildIndex = nextChildIndex;
mDeferredBarrierType = kBarrier_None;
} else {
// standard case - append to existing chunk
mDisplayListData->chunks.back().endOpIndex = insertIndex + 1;
}
return insertIndex;
}
size_t DisplayListCanvas::flushAndAddOp(DisplayListOp* op) {
flushRestoreToCount();
flushTranslate();
return addOpAndUpdateChunk(op);
}
size_t DisplayListCanvas::addStateOp(StateOp* op) {
return flushAndAddOp(op);
}
size_t DisplayListCanvas::addDrawOp(DrawOp* op) {
Rect localBounds;
if (op->getLocalBounds(localBounds)) {
bool rejected = quickRejectRect(localBounds.left, localBounds.top,
localBounds.right, localBounds.bottom);
op->setQuickRejected(rejected);
}
mDisplayListData->hasDrawOps = true;
return flushAndAddOp(op);
}
size_t DisplayListCanvas::addRenderNodeOp(DrawRenderNodeOp* op) {
int opIndex = addDrawOp(op);
int childIndex = mDisplayListData->addChild(op);
// update the chunk's child indices
DisplayListData::Chunk& chunk = mDisplayListData->chunks.back();
chunk.endChildIndex = childIndex + 1;
if (op->renderNode()->stagingProperties().isProjectionReceiver()) {
// use staging property, since recording on UI thread
mDisplayListData->projectionReceiveIndex = opIndex;
}
return opIndex;
}
void DisplayListCanvas::refBitmapsInShader(const SkShader* shader) {
if (!shader) return;
// If this paint has an SkShader that has an SkBitmap add
// it to the bitmap pile
SkBitmap bitmap;
SkShader::TileMode xy[2];
if (shader->asABitmap(&bitmap, nullptr, xy) == SkShader::kDefault_BitmapType) {
refBitmap(bitmap);
return;
}
SkShader::ComposeRec rec;
if (shader->asACompose(&rec)) {
refBitmapsInShader(rec.fShaderA);
refBitmapsInShader(rec.fShaderB);
return;
}
}
}; // namespace uirenderer
}; // namespace android