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Commit 72903272 authored by Derek Sollenberger's avatar Derek Sollenberger
Browse files

Remove unused classes from HWUI.

Test: compiles and hwui_unit_tests
Change-Id: I42e279a497ea17ad06a857c9914d5aca5df9f6df
parent 9bf8ba3c
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+1 −8
Original line number Diff line number Diff line
@@ -23,8 +23,6 @@
#include <hwui/Paint.h>
#include <utils/Log.h>

#include <ResourceCache.h>

#include "SkCanvas.h"
#include "SkLatticeIter.h"
#include "SkRegion.h"
@@ -83,13 +81,8 @@ public:

    static void finalize(JNIEnv* env, jobject, jlong patchHandle) {
        int8_t* patch = reinterpret_cast<int8_t*>(patchHandle);
        if (android::uirenderer::ResourceCache::hasInstance()) {
            Res_png_9patch* p = (Res_png_9patch*) patch;
            android::uirenderer::ResourceCache::getInstance().destructor(p);
        } else {
        delete[] patch;
    }
    }

    static jlong getTransparentRegion(JNIEnv* env, jobject, jobject jbitmap,
            jlong chunkHandle, jobject dstRect) {
+0 −7
Original line number Diff line number Diff line
@@ -201,9 +201,7 @@ cc_defaults {
        "AnimationContext.cpp",
        "Animator.cpp",
        "AnimatorManager.cpp",
        "CanvasState.cpp",
        "CanvasTransform.cpp",
        "ClipArea.cpp",
        "DamageAccumulator.cpp",
        "DeferredLayerUpdater.cpp",
        "DeviceInfo.cpp",
@@ -226,9 +224,7 @@ cc_defaults {
        "RecordingCanvas.cpp",
        "RenderNode.cpp",
        "RenderProperties.cpp",
        "ResourceCache.cpp",
        "SkiaCanvas.cpp",
        "Snapshot.cpp",
        "TreeInfo.cpp",
        "VectorDrawable.cpp",
        "protos/graphicsstats.proto",
@@ -307,8 +303,6 @@ cc_test {
        "tests/unit/main.cpp",
        "tests/unit/CacheManagerTests.cpp",
        "tests/unit/CanvasContextTests.cpp",
        "tests/unit/CanvasStateTests.cpp",
        "tests/unit/ClipAreaTests.cpp",
        "tests/unit/DamageAccumulatorTests.cpp",
        "tests/unit/DeferredLayerUpdaterTests.cpp",
        "tests/unit/FatVectorTests.cpp",
@@ -327,7 +321,6 @@ cc_test {
        "tests/unit/SkiaPipelineTests.cpp",
        "tests/unit/SkiaRenderPropertiesTests.cpp",
        "tests/unit/SkiaCanvasTests.cpp",
        "tests/unit/SnapshotTests.cpp",
        "tests/unit/StringUtilsTests.cpp",
        "tests/unit/TestUtilsTests.cpp",
        "tests/unit/ThreadBaseTests.cpp",

libs/hwui/CanvasState.cpp

deleted100644 → 0
+0 −284
Original line number Diff line number Diff line
/*
 * 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 "CanvasState.h"
#include "hwui/Canvas.h"
#include "utils/MathUtils.h"

namespace android {
namespace uirenderer {

CanvasState::CanvasState(CanvasStateClient& renderer)
        : mWidth(-1), mHeight(-1), mSaveCount(1), mCanvas(renderer), mSnapshot(&mFirstSnapshot) {}

CanvasState::~CanvasState() {
    // First call freeSnapshot on all but mFirstSnapshot
    // to invoke all the dtors
    freeAllSnapshots();

    // Now actually release the memory
    while (mSnapshotPool) {
        void* temp = mSnapshotPool;
        mSnapshotPool = mSnapshotPool->previous;
        free(temp);
    }
}

void CanvasState::initializeRecordingSaveStack(int viewportWidth, int viewportHeight) {
    if (mWidth != viewportWidth || mHeight != viewportHeight) {
        mWidth = viewportWidth;
        mHeight = viewportHeight;
        mFirstSnapshot.initializeViewport(viewportWidth, viewportHeight);
        mCanvas.onViewportInitialized();
    }

    freeAllSnapshots();
    mSnapshot = allocSnapshot(&mFirstSnapshot, SaveFlags::MatrixClip);
    mSnapshot->setRelativeLightCenter(Vector3());
    mSaveCount = 1;
}

void CanvasState::initializeSaveStack(int viewportWidth, int viewportHeight, float clipLeft,
                                      float clipTop, float clipRight, float clipBottom,
                                      const Vector3& lightCenter) {
    if (mWidth != viewportWidth || mHeight != viewportHeight) {
        mWidth = viewportWidth;
        mHeight = viewportHeight;
        mFirstSnapshot.initializeViewport(viewportWidth, viewportHeight);
        mCanvas.onViewportInitialized();
    }

    freeAllSnapshots();
    mSnapshot = allocSnapshot(&mFirstSnapshot, SaveFlags::MatrixClip);
    mSnapshot->setClip(clipLeft, clipTop, clipRight, clipBottom);
    mSnapshot->fbo = mCanvas.getTargetFbo();
    mSnapshot->setRelativeLightCenter(lightCenter);
    mSaveCount = 1;
}

Snapshot* CanvasState::allocSnapshot(Snapshot* previous, int savecount) {
    void* memory;
    if (mSnapshotPool) {
        memory = mSnapshotPool;
        mSnapshotPool = mSnapshotPool->previous;
        mSnapshotPoolCount--;
    } else {
        memory = malloc(sizeof(Snapshot));
    }
    return new (memory) Snapshot(previous, savecount);
}

void CanvasState::freeSnapshot(Snapshot* snapshot) {
    snapshot->~Snapshot();
    // Arbitrary number, just don't let this grown unbounded
    if (mSnapshotPoolCount > 10) {
        free((void*)snapshot);
    } else {
        snapshot->previous = mSnapshotPool;
        mSnapshotPool = snapshot;
        mSnapshotPoolCount++;
    }
}

void CanvasState::freeAllSnapshots() {
    while (mSnapshot != &mFirstSnapshot) {
        Snapshot* temp = mSnapshot;
        mSnapshot = mSnapshot->previous;
        freeSnapshot(temp);
    }
}

///////////////////////////////////////////////////////////////////////////////
// Save (layer)
///////////////////////////////////////////////////////////////////////////////

/**
 * Guaranteed to save without side-effects
 *
 * This approach, here and in restoreSnapshot(), allows subclasses to directly manipulate the save
 * stack, and ensures restoreToCount() doesn't call back into subclass overrides.
 */
int CanvasState::saveSnapshot(int flags) {
    mSnapshot = allocSnapshot(mSnapshot, flags);
    return mSaveCount++;
}

int CanvasState::save(int flags) {
    return saveSnapshot(flags);
}

/**
 * Guaranteed to restore without side-effects.
 */
void CanvasState::restoreSnapshot() {
    Snapshot* toRemove = mSnapshot;
    Snapshot* toRestore = mSnapshot->previous;

    mSaveCount--;
    mSnapshot = toRestore;

    // subclass handles restore implementation
    mCanvas.onSnapshotRestored(*toRemove, *toRestore);

    freeSnapshot(toRemove);
}

void CanvasState::restore() {
    if (mSaveCount > 1) {
        restoreSnapshot();
    }
}

void CanvasState::restoreToCount(int saveCount) {
    if (saveCount < 1) saveCount = 1;

    while (mSaveCount > saveCount) {
        restoreSnapshot();
    }
}

///////////////////////////////////////////////////////////////////////////////
// Matrix
///////////////////////////////////////////////////////////////////////////////

void CanvasState::getMatrix(SkMatrix* matrix) const {
    mSnapshot->transform->copyTo(*matrix);
}

void CanvasState::translate(float dx, float dy, float dz) {
    mSnapshot->transform->translate(dx, dy, dz);
}

void CanvasState::rotate(float degrees) {
    mSnapshot->transform->rotate(degrees, 0.0f, 0.0f, 1.0f);
}

void CanvasState::scale(float sx, float sy) {
    mSnapshot->transform->scale(sx, sy, 1.0f);
}

void CanvasState::skew(float sx, float sy) {
    mSnapshot->transform->skew(sx, sy);
}

void CanvasState::setMatrix(const SkMatrix& matrix) {
    mSnapshot->transform->load(matrix);
}

void CanvasState::setMatrix(const Matrix4& matrix) {
    *(mSnapshot->transform) = matrix;
}

void CanvasState::concatMatrix(const SkMatrix& matrix) {
    mat4 transform(matrix);
    mSnapshot->transform->multiply(transform);
}

void CanvasState::concatMatrix(const Matrix4& matrix) {
    mSnapshot->transform->multiply(matrix);
}

///////////////////////////////////////////////////////////////////////////////
// Clip
///////////////////////////////////////////////////////////////////////////////

bool CanvasState::clipRect(float left, float top, float right, float bottom, SkClipOp op) {
    mSnapshot->clip(Rect(left, top, right, bottom), op);
    return !mSnapshot->clipIsEmpty();
}

bool CanvasState::clipPath(const SkPath* path, SkClipOp op) {
    mSnapshot->clipPath(*path, op);
    return !mSnapshot->clipIsEmpty();
}

void CanvasState::setClippingOutline(LinearAllocator& allocator, const Outline* outline) {
    Rect bounds;
    float radius;
    if (!outline->getAsRoundRect(&bounds, &radius)) return;  // only RR supported

    bool outlineIsRounded = MathUtils::isPositive(radius);
    if (!outlineIsRounded || currentTransform()->isSimple()) {
        // TODO: consider storing this rect separately, so that this can't be replaced with clip ops
        clipRect(bounds.left, bounds.top, bounds.right, bounds.bottom, SkClipOp::kIntersect);
    }
    if (outlineIsRounded) {
        setClippingRoundRect(allocator, bounds, radius, false);
    }
}

///////////////////////////////////////////////////////////////////////////////
// Quick Rejection
///////////////////////////////////////////////////////////////////////////////

/**
 * Calculates whether content drawn within the passed bounds would be outside of, or intersect with
 * the clipRect. Does not modify the scissor.
 *
 * @param clipRequired if not null, will be set to true if element intersects clip
 *         (and wasn't rejected)
 *
 * @param snapOut if set, the geometry will be treated as having an AA ramp.
 *         See Rect::snapGeometryToPixelBoundaries()
 */
bool CanvasState::calculateQuickRejectForScissor(float left, float top, float right, float bottom,
                                                 bool* clipRequired, bool* roundRectClipRequired,
                                                 bool snapOut) const {
    if (bottom <= top || right <= left) {
        return true;
    }

    Rect r(left, top, right, bottom);
    currentTransform()->mapRect(r);
    r.snapGeometryToPixelBoundaries(snapOut);

    Rect clipRect(currentRenderTargetClip());
    clipRect.snapToPixelBoundaries();

    if (!clipRect.intersects(r)) return true;

    // clip is required if geometry intersects clip rect
    if (clipRequired) {
        *clipRequired = !clipRect.contains(r);
    }

    // round rect clip is required if RR clip exists, and geometry intersects its corners
    if (roundRectClipRequired) {
        *roundRectClipRequired = mSnapshot->roundRectClipState != nullptr &&
                                 mSnapshot->roundRectClipState->areaRequiresRoundRectClip(r);
    }
    return false;
}

bool CanvasState::quickRejectConservative(float left, float top, float right, float bottom) const {
    if (bottom <= top || right <= left) {
        return true;
    }

    Rect r(left, top, right, bottom);
    currentTransform()->mapRect(r);
    r.roundOut();  // rounded out to be conservative

    Rect clipRect(currentRenderTargetClip());
    clipRect.snapToPixelBoundaries();

    if (!clipRect.intersects(r)) return true;

    return false;
}

}  // namespace uirenderer
}  // namespace android

libs/hwui/CanvasState.h

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/*
 * 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.
 */

#pragma once

#include "Snapshot.h"

#include <SkClipOp.h>
#include <SkMatrix.h>
#include <SkPath.h>
#include <SkRegion.h>

namespace android {
namespace uirenderer {

/**
 * Abstract base class for any class containing CanvasState.
 * Defines three mandatory callbacks.
 */
class CanvasStateClient {
public:
    CanvasStateClient() {}
    virtual ~CanvasStateClient() {}

    /**
     * Callback allowing embedder to take actions in the middle of a
     * setViewport() call.
     */
    virtual void onViewportInitialized() = 0;

    /**
     * Callback allowing embedder to take actions in the middle of a
     * restore() call.  May be called several times sequentially.
     */
    virtual void onSnapshotRestored(const Snapshot& removed, const Snapshot& restored) = 0;

    /**
     * Allows subclasses to control what value is stored in snapshot's
     * fbo field in * initializeSaveStack.
     */
    virtual GLuint getTargetFbo() const = 0;

};  // class CanvasStateClient

/**
 * Implements Canvas state methods on behalf of Renderers.
 *
 * Manages the Snapshot stack, implementing matrix, save/restore, and clipping methods in the
 * Renderer interface. Drawing and recording classes that include a CanvasState will have
 * different use cases:
 *
 * Drawing code maintaining canvas state (e.g. FrameBuilder) can query attributes (such as
 * transform) or hook into changes (e.g. save/restore) with minimal surface area for manipulating
 * the stack itself.
 *
 * Recording code maintaining canvas state (e.g. RecordingCanvas) can both record and pass
 * through state operations to CanvasState, so that not only will querying operations work
 * (getClip/Matrix), but so that quickRejection can also be used.
 */

class CanvasState {
public:
    explicit CanvasState(CanvasStateClient& renderer);
    ~CanvasState();

    /**
     * Initializes the first snapshot, computing the projection matrix,
     * and stores the dimensions of the render target.
     */
    void initializeRecordingSaveStack(int viewportWidth, int viewportHeight);

    /**
     * Initializes the first snapshot, computing the projection matrix,
     * and stores the dimensions of the render target.
     */
    void initializeSaveStack(int viewportWidth, int viewportHeight, float clipLeft, float clipTop,
                             float clipRight, float clipBottom, const Vector3& lightCenter);

    bool hasRectToRectTransform() const { return CC_LIKELY(currentTransform()->rectToRect()); }

    // Save (layer)
    int getSaveCount() const { return mSaveCount; }
    int save(int flags);
    void restore();
    void restoreToCount(int saveCount);

    // Save/Restore without side-effects
    int saveSnapshot(int flags);
    void restoreSnapshot();

    // Matrix
    void getMatrix(SkMatrix* outMatrix) const;
    void translate(float dx, float dy, float dz = 0.0f);
    void rotate(float degrees);
    void scale(float sx, float sy);
    void skew(float sx, float sy);

    void setMatrix(const SkMatrix& matrix);
    void setMatrix(const Matrix4& matrix);  // internal only convenience method
    void concatMatrix(const SkMatrix& matrix);
    void concatMatrix(const Matrix4& matrix);  // internal only convenience method

    // Clip
    const Rect& getLocalClipBounds() const { return mSnapshot->getLocalClip(); }
    const Rect& getRenderTargetClipBounds() const { return mSnapshot->getRenderTargetClip(); }

    bool quickRejectConservative(float left, float top, float right, float bottom) const;

    bool clipRect(float left, float top, float right, float bottom, SkClipOp op);
    bool clipPath(const SkPath* path, SkClipOp op);

    /**
     * Sets a "clipping outline", which is independent from the regular clip.
     * Currently only supports rectangles or rounded rectangles; passing in a
     * more complicated outline fails silently. Replaces any previous clipping
     * outline.
     */
    void setClippingOutline(LinearAllocator& allocator, const Outline* outline);
    void setClippingRoundRect(LinearAllocator& allocator, const Rect& rect, float radius,
                              bool highPriority = true) {
        mSnapshot->setClippingRoundRect(allocator, rect, radius, highPriority);
    }
    void setProjectionPathMask(const SkPath* path) { mSnapshot->setProjectionPathMask(path); }

    /**
     * Returns true if drawing in the rectangle (left, top, right, bottom)
     * will be clipped out. Is conservative: might return false when subpixel-
     * perfect tests would return true.
     */
    bool calculateQuickRejectForScissor(float left, float top, float right, float bottom,
                                        bool* clipRequired, bool* roundRectClipRequired,
                                        bool snapOut) const;

    void scaleAlpha(float alpha) { mSnapshot->alpha *= alpha; }

    inline const mat4* currentTransform() const { return currentSnapshot()->transform; }
    inline const Rect& currentRenderTargetClip() const {
        return currentSnapshot()->getRenderTargetClip();
    }
    inline int currentFlags() const { return currentSnapshot()->flags; }
    const Vector3& currentLightCenter() const {
        return currentSnapshot()->getRelativeLightCenter();
    }
    int getViewportWidth() const { return currentSnapshot()->getViewportWidth(); }
    int getViewportHeight() const { return currentSnapshot()->getViewportHeight(); }
    int getWidth() const { return mWidth; }
    int getHeight() const { return mHeight; }
    bool clipIsSimple() const { return currentSnapshot()->clipIsSimple(); }

    inline const Snapshot* currentSnapshot() const { return mSnapshot; }
    inline Snapshot* writableSnapshot() { return mSnapshot; }
    inline const Snapshot* firstSnapshot() const { return &mFirstSnapshot; }

private:
    Snapshot* allocSnapshot(Snapshot* previous, int savecount);
    void freeSnapshot(Snapshot* snapshot);
    void freeAllSnapshots();

    /// Dimensions of the drawing surface
    int mWidth, mHeight;

    /// Number of saved states
    int mSaveCount;

    /// Base state
    Snapshot mFirstSnapshot;

    /// Host providing callbacks
    CanvasStateClient& mCanvas;

    /// Current state
    Snapshot* mSnapshot;

    // Pool of allocated snapshots to re-use
    // NOTE: The dtors have already been invoked!
    Snapshot* mSnapshotPool = nullptr;
    int mSnapshotPoolCount = 0;

};  // class CanvasState

};  // namespace uirenderer
};  // namespace android

libs/hwui/ClipArea.cpp

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