| John Reck | acb6f07 | 2014-03-12 16:11:23 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2014 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | #include "RenderProperties.h" |
| 17 | |
| 18 | #include <SkMatrix.h> |
| 19 | |
| 20 | #include "Matrix.h" |
| 21 | |
| 22 | namespace android { |
| 23 | namespace uirenderer { |
| 24 | |
| 25 | RenderProperties::RenderProperties() |
| 26 | : mClipToBounds(true) |
| 27 | , mProjectBackwards(false) |
| 28 | , mProjectionReceiver(false) |
| 29 | , mClipToOutline(false) |
| John Reck | acb6f07 | 2014-03-12 16:11:23 -0700 | [diff] [blame] | 30 | , mAlpha(1) |
| 31 | , mHasOverlappingRendering(true) |
| 32 | , mTranslationX(0), mTranslationY(0), mTranslationZ(0) |
| 33 | , mRotation(0), mRotationX(0), mRotationY(0) |
| 34 | , mScaleX(1), mScaleY(1) |
| 35 | , mPivotX(0), mPivotY(0) |
| 36 | , mCameraDistance(0) |
| 37 | , mLeft(0), mTop(0), mRight(0), mBottom(0) |
| 38 | , mWidth(0), mHeight(0) |
| 39 | , mPrevWidth(-1), mPrevHeight(-1) |
| 40 | , mPivotExplicitlySet(false) |
| 41 | , mMatrixDirty(false) |
| 42 | , mMatrixIsIdentity(true) |
| 43 | , mTransformMatrix(NULL) |
| 44 | , mMatrixFlags(0) |
| 45 | , mTransformCamera(NULL) |
| 46 | , mTransformMatrix3D(NULL) |
| 47 | , mStaticMatrix(NULL) |
| 48 | , mAnimationMatrix(NULL) |
| 49 | , mCaching(false) { |
| 50 | mOutline.rewind(); |
| 51 | } |
| 52 | |
| 53 | RenderProperties::~RenderProperties() { |
| 54 | delete mTransformMatrix; |
| 55 | delete mTransformCamera; |
| 56 | delete mTransformMatrix3D; |
| 57 | delete mStaticMatrix; |
| 58 | delete mAnimationMatrix; |
| 59 | } |
| 60 | |
| 61 | float RenderProperties::getPivotX() { |
| 62 | updateMatrix(); |
| 63 | return mPivotX; |
| 64 | } |
| 65 | |
| 66 | float RenderProperties::getPivotY() { |
| 67 | updateMatrix(); |
| 68 | return mPivotY; |
| 69 | } |
| 70 | |
| 71 | void RenderProperties::updateMatrix() { |
| 72 | if (mMatrixDirty) { |
| 73 | // NOTE: mTransformMatrix won't be up to date if a DisplayList goes from a complex transform |
| 74 | // to a pure translate. This is safe because the matrix isn't read in pure translate cases. |
| 75 | if (mMatrixFlags && mMatrixFlags != TRANSLATION) { |
| 76 | if (!mTransformMatrix) { |
| 77 | // only allocate a matrix if we have a complex transform |
| 78 | mTransformMatrix = new Matrix4(); |
| 79 | } |
| 80 | if (!mPivotExplicitlySet) { |
| 81 | if (mWidth != mPrevWidth || mHeight != mPrevHeight) { |
| 82 | mPrevWidth = mWidth; |
| 83 | mPrevHeight = mHeight; |
| 84 | mPivotX = mPrevWidth / 2.0f; |
| 85 | mPivotY = mPrevHeight / 2.0f; |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | if ((mMatrixFlags & ROTATION_3D) == 0) { |
| 90 | mTransformMatrix->loadTranslate( |
| 91 | mPivotX + mTranslationX, |
| 92 | mPivotY + mTranslationY, |
| 93 | 0); |
| 94 | mTransformMatrix->rotate(mRotation, 0, 0, 1); |
| 95 | mTransformMatrix->scale(mScaleX, mScaleY, 1); |
| 96 | mTransformMatrix->translate(-mPivotX, -mPivotY); |
| 97 | } else { |
| 98 | if (!mTransformCamera) { |
| 99 | mTransformCamera = new Sk3DView(); |
| 100 | mTransformMatrix3D = new SkMatrix(); |
| 101 | } |
| 102 | SkMatrix transformMatrix; |
| 103 | transformMatrix.reset(); |
| 104 | mTransformCamera->save(); |
| 105 | transformMatrix.preScale(mScaleX, mScaleY, mPivotX, mPivotY); |
| 106 | mTransformCamera->rotateX(mRotationX); |
| 107 | mTransformCamera->rotateY(mRotationY); |
| 108 | mTransformCamera->rotateZ(-mRotation); |
| 109 | mTransformCamera->getMatrix(mTransformMatrix3D); |
| 110 | mTransformMatrix3D->preTranslate(-mPivotX, -mPivotY); |
| 111 | mTransformMatrix3D->postTranslate(mPivotX + mTranslationX, |
| 112 | mPivotY + mTranslationY); |
| 113 | transformMatrix.postConcat(*mTransformMatrix3D); |
| 114 | mTransformCamera->restore(); |
| 115 | |
| 116 | mTransformMatrix->load(transformMatrix); |
| 117 | } |
| 118 | } |
| 119 | mMatrixDirty = false; |
| 120 | } |
| 121 | } |
| 122 | |
| 123 | } /* namespace uirenderer */ |
| 124 | } /* namespace android */ |