1 /* 2 * Copyright (C) 2016 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 17 #include "TestListViewSceneBase.h" 18 19 #include "TestContext.h" 20 #include "TestUtils.h" 21 22 #include <utils/Color.h> 23 24 namespace android { 25 namespace uirenderer { 26 namespace test { 27 28 void TestListViewSceneBase::createContent(int width, int height, Canvas& canvas) { 29 srand(0); 30 mItemHeight = dp(60); 31 mItemSpacing = dp(16); 32 mItemWidth = std::min((height - mItemSpacing * 2), (int)dp(300)); 33 mItemLeft = (width - mItemWidth) / 2; 34 int heightWithSpacing = mItemHeight + mItemSpacing; 35 for (int y = 0; y < height + (heightWithSpacing - 1); y += heightWithSpacing) { 36 int id = mListItems.size(); 37 auto setup = std::bind(&TestListViewSceneBase::createListItem, this, std::placeholders::_1, 38 std::placeholders::_2, id, mItemWidth, mItemHeight); 39 auto node = TestUtils::createNode(mItemLeft, y, mItemLeft + mItemWidth, 40 y + mItemHeight, setup); 41 mListItems.push_back(node); 42 } 43 mListView = TestUtils::createNode(0, 0, width, height, 44 [this](RenderProperties& props, Canvas& canvas) { 45 for (size_t ci = 0; ci < mListItems.size(); ci++) { 46 canvas.drawRenderNode(mListItems[ci].get()); 47 } 48 }); 49 50 canvas.drawColor(Color::Grey_500, SkBlendMode::kSrcOver); 51 canvas.drawRenderNode(mListView.get()); 52 } 53 54 void TestListViewSceneBase::doFrame(int frameNr) { 55 int scrollPx = dp(frameNr) * 3; 56 int itemIndexOffset = scrollPx / (mItemSpacing + mItemHeight); 57 int pxOffset = -(scrollPx % (mItemSpacing + mItemHeight)); 58 59 std::unique_ptr<Canvas> canvas(Canvas::create_recording_canvas(mListView->stagingProperties().getWidth(), 60 mListView->stagingProperties().getHeight())); 61 for (size_t ci = 0; ci < mListItems.size(); ci++) { 62 // update item position 63 auto listItem = mListItems[(ci + itemIndexOffset) % mListItems.size()]; 64 int top = ((int)ci) * (mItemSpacing + mItemHeight) + pxOffset; 65 listItem->mutateStagingProperties().setLeftTopRightBottom( 66 mItemLeft, top, mItemLeft + mItemWidth, top + mItemHeight); 67 listItem->setPropertyFieldsDirty(RenderNode::X | RenderNode::Y); 68 69 // draw it to parent DisplayList 70 canvas->drawRenderNode(mListItems[ci].get()); 71 } 72 mListView->setStagingDisplayList(canvas->finishRecording()); 73 } 74 75 } // namespace test 76 } // namespace uirenderer 77 } // namespace android 78
