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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.
*/
#include "RenderProperties.h"
#include <SkMatrix.h>
#include "Matrix.h"
namespace android {
namespace uirenderer {
RenderProperties::RenderProperties()
: mClipToBounds(true)
, mProjectBackwards(false)
, mProjectionReceiver(false)
, mAlpha(1)
, mHasOverlappingRendering(true)
, mTranslationX(0), mTranslationY(0), mTranslationZ(0)
, mRotation(0), mRotationX(0), mRotationY(0)
, mScaleX(1), mScaleY(1)
, mPivotX(0), mPivotY(0)
, mCameraDistance(0)
, mLeft(0), mTop(0), mRight(0), mBottom(0)
, mWidth(0), mHeight(0)
, mPrevWidth(-1), mPrevHeight(-1)
, mPivotExplicitlySet(false)
, mMatrixDirty(false)
, mMatrixIsIdentity(true)
, mTransformMatrix(NULL)
, mMatrixFlags(0)
, mTransformCamera(NULL)
, mTransformMatrix3D(NULL)
, mStaticMatrix(NULL)
, mAnimationMatrix(NULL)
, mCaching(false) {
}
RenderProperties::~RenderProperties() {
delete mTransformMatrix;
delete mTransformCamera;
delete mTransformMatrix3D;
delete mStaticMatrix;
delete mAnimationMatrix;
}
float RenderProperties::getPivotX() {
updateMatrix();
return mPivotX;
}
float RenderProperties::getPivotY() {
updateMatrix();
return mPivotY;
}
void RenderProperties::updateMatrix() {
if (mMatrixDirty) {
// NOTE: mTransformMatrix won't be up to date if a DisplayList goes from a complex transform
// to a pure translate. This is safe because the matrix isn't read in pure translate cases.
if (mMatrixFlags && mMatrixFlags != TRANSLATION) {
if (!mTransformMatrix) {
// only allocate a matrix if we have a complex transform
mTransformMatrix = new Matrix4();
}
if (!mPivotExplicitlySet) {
if (mWidth != mPrevWidth || mHeight != mPrevHeight) {
mPrevWidth = mWidth;
mPrevHeight = mHeight;
mPivotX = mPrevWidth / 2.0f;
mPivotY = mPrevHeight / 2.0f;
}
}
if ((mMatrixFlags & ROTATION_3D) == 0) {
mTransformMatrix->loadTranslate(
mPivotX + mTranslationX,
mPivotY + mTranslationY,
0);
mTransformMatrix->rotate(mRotation, 0, 0, 1);
mTransformMatrix->scale(mScaleX, mScaleY, 1);
mTransformMatrix->translate(-mPivotX, -mPivotY);
} else {
if (!mTransformCamera) {
mTransformCamera = new Sk3DView();
mTransformMatrix3D = new SkMatrix();
}
SkMatrix transformMatrix;
transformMatrix.reset();
mTransformCamera->save();
transformMatrix.preScale(mScaleX, mScaleY, mPivotX, mPivotY);
mTransformCamera->rotateX(mRotationX);
mTransformCamera->rotateY(mRotationY);
mTransformCamera->rotateZ(-mRotation);
mTransformCamera->getMatrix(mTransformMatrix3D);
mTransformMatrix3D->preTranslate(-mPivotX, -mPivotY);
mTransformMatrix3D->postTranslate(mPivotX + mTranslationX,
mPivotY + mTranslationY);
transformMatrix.postConcat(*mTransformMatrix3D);
mTransformCamera->restore();
mTransformMatrix->load(transformMatrix);
}
}
mMatrixDirty = false;
}
}
} /* namespace uirenderer */
} /* namespace android */
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