1 files changed, 570 insertions, 0 deletions
diff --git a/libs/hwui/DisplayListCanvas.cpp b/libs/hwui/DisplayListCanvas.cpp
new file mode 100644
index 0000000..6b86030
--- /dev/null
+++ b/libs/hwui/DisplayListCanvas.cpp
@@ -0,0 +1,570 @@
+/*
+ * 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()
+    : mState(*this)
+    , mResourceCache(ResourceCache::getInstance())
+    , mDisplayListData(nullptr)
+    , mTranslateX(0.0f)
+    , mTranslateY(0.0f)
+    , mHasDeferredTranslate(false)
+    , mDeferredBarrierType(kBarrier_None)
+    , mHighContrastText(false)
+    , mRestoreSaveCount(-1) {
+}
+
+DisplayListCanvas::~DisplayListCanvas() {
+    LOG_ALWAYS_FATAL_IF(mDisplayListData,
+            "Destroyed a DisplayListCanvas during a record!");
+}
+
+///////////////////////////////////////////////////////////////////////////////
+// Operations
+///////////////////////////////////////////////////////////////////////////////
+
+DisplayListData* DisplayListCanvas::finishRecording() {
+    mPaintMap.clear();
+    mRegionMap.clear();
+    mPathMap.clear();
+    DisplayListData* data = mDisplayListData;
+    mDisplayListData = nullptr;
+    mSkiaCanvasProxy.reset(nullptr);
+    return data;
+}
+
+void DisplayListCanvas::prepareDirty(float left, float top,
+        float right, float bottom) {
+
+    LOG_ALWAYS_FATAL_IF(mDisplayListData,
+            "prepareDirty called a second time during a recording!");
+    mDisplayListData = new DisplayListData();
+
+    mState.initializeSaveStack(0, 0, mState.getWidth(), mState.getHeight(), Vector3());
+
+    mDeferredBarrierType = kBarrier_InOrder;
+    mState.setDirtyClip(false);
+    mRestoreSaveCount = -1;
+}
+
+bool DisplayListCanvas::finish() {
+    flushRestoreToCount();
+    flushTranslate();
+    return false;
+}
+
+void DisplayListCanvas::interrupt() {
+}
+
+void DisplayListCanvas::resume() {
+}
+
+void DisplayListCanvas::callDrawGLFunction(Functor *functor, Rect& dirty) {
+    // Ignore dirty during recording, it matters only when we replay
+    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));
+    }
+    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) {
+    mHasDeferredTranslate = true;
+    mTranslateX += dx;
+    mTranslateY += dy;
+    flushRestoreToCount();
+    mState.translate(dx, dy, 0.0f);
+}
+
+void DisplayListCanvas::rotate(float degrees) {
+    addStateOp(new (alloc()) RotateOp(degrees));
+    mState.rotate(degrees);
+}
+
+void DisplayListCanvas::scale(float sx, float sy) {
+    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::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, Rect& dirty, int32_t flags) {
+    LOG_ALWAYS_FATAL_IF(!renderNode, "missing rendernode");
+
+    // dirty is an out parameter and should not be recorded,
+    // it matters only when replaying the display list
+    DrawRenderNodeOp* op = new (alloc()) DrawRenderNodeOp(renderNode, flags, *mState.currentTransform());
+    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) {
+    bitmap = refBitmap(bitmap);
+    patch = refPatch(patch);
+    paint = refPaint(paint);
+
+    addDrawOp(new (alloc()) DrawPatchOp(bitmap, 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);
+    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);
+    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);
+}
+
+static void simplifyPaint(int color, SkPaint* paint) {
+    paint->setColor(color);
+    paint->setShader(nullptr);
+    paint->setColorFilter(nullptr);
+    paint->setLooper(nullptr);
+    paint->setStrokeWidth(4 + 0.04 * paint->getTextSize());
+    paint->setStrokeJoin(SkPaint::kRound_Join);
+    paint->setLooper(nullptr);
+}
+
+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);
+
+    if (CC_UNLIKELY(mHighContrastText)) {
+        // high contrast draw path
+        int color = paint.getColor();
+        int channelSum = SkColorGetR(color) + SkColorGetG(color) + SkColorGetB(color);
+        bool darken = channelSum < (128 * 3);
+
+        // outline
+        SkPaint* outlinePaint = copyPaint(&paint);
+        simplifyPaint(darken ? SK_ColorWHITE : SK_ColorBLACK, outlinePaint);
+        outlinePaint->setStyle(SkPaint::kStrokeAndFill_Style);
+        addDrawOp(new (alloc()) DrawTextOp(text, bytesCount, count,
+                x, y, positions, outlinePaint, totalAdvance, bounds)); // bounds?
+
+        // inner
+        SkPaint* innerPaint = copyPaint(&paint);
+        simplifyPaint(darken ? SK_ColorBLACK : SK_ColorWHITE, innerPaint);
+        innerPaint->setStyle(SkPaint::kFill_Style);
+        addDrawOp(new (alloc()) DrawTextOp(text, bytesCount, count,
+                x, y, positions, innerPaint, totalAdvance, bounds));
+    } else {
+        // standard draw path
+        DrawOp* op = new (alloc()) DrawTextOp(text, bytesCount, count,
+                x, y, positions, refPaint(&paint), totalAdvance, bounds);
+        addDrawOp(op);
+    }
+}
+
+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.add(op);
+    if (mDeferredBarrierType != kBarrier_None) {
+        // op is first in new chunk
+        mDisplayListData->chunks.push();
+        DisplayListData::Chunk& newChunk = mDisplayListData->chunks.editTop();
+        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.editTop().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.editTop();
+    chunk.endChildIndex = childIndex + 1;
+
+    if (op->renderNode()->stagingProperties().isProjectionReceiver()) {
+        // use staging property, since recording on UI thread
+        mDisplayListData->projectionReceiveIndex = opIndex;
+    }
+    return opIndex;
+}
+
+}; // namespace uirenderer
+}; // namespace android