79 lines
3.1 KiB
C++
79 lines
3.1 KiB
C++
/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "TestListViewSceneBase.h"
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#include "TestContext.h"
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#include "TestUtils.h"
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#include <utils/Color.h>
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namespace android {
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namespace uirenderer {
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namespace test {
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void TestListViewSceneBase::createContent(int width, int height, Canvas& canvas) {
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srand(0);
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mItemHeight = dp(60);
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mItemSpacing = dp(16);
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mItemWidth = std::min((height - mItemSpacing * 2), (int)dp(300));
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mItemLeft = (width - mItemWidth) / 2;
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int heightWithSpacing = mItemHeight + mItemSpacing;
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for (int y = 0; y < height + (heightWithSpacing - 1); y += heightWithSpacing) {
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int id = mListItems.size();
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auto setup = std::bind(&TestListViewSceneBase::createListItem, this, std::placeholders::_1,
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std::placeholders::_2, id, mItemWidth, mItemHeight);
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auto node =
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TestUtils::createNode(mItemLeft, y, mItemLeft + mItemWidth, y + mItemHeight, setup);
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mListItems.push_back(node);
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}
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mListView = TestUtils::createNode(0, 0, width, height,
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[this](RenderProperties& props, Canvas& canvas) {
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for (size_t ci = 0; ci < mListItems.size(); ci++) {
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canvas.drawRenderNode(mListItems[ci].get());
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}
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});
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canvas.drawColor(Color::Grey_500, SkBlendMode::kSrcOver);
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canvas.drawRenderNode(mListView.get());
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}
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void TestListViewSceneBase::doFrame(int frameNr) {
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int scrollPx = dp(frameNr) * 3;
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int itemIndexOffset = scrollPx / (mItemSpacing + mItemHeight);
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int pxOffset = -(scrollPx % (mItemSpacing + mItemHeight));
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std::unique_ptr<Canvas> canvas(Canvas::create_recording_canvas(
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mListView->stagingProperties().getWidth(), mListView->stagingProperties().getHeight(),
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mListView.get()));
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for (size_t ci = 0; ci < mListItems.size(); ci++) {
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// update item position
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auto listItem = mListItems[(ci + itemIndexOffset) % mListItems.size()];
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int top = ((int)ci) * (mItemSpacing + mItemHeight) + pxOffset;
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listItem->mutateStagingProperties().setLeftTopRightBottom(
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mItemLeft, top, mItemLeft + mItemWidth, top + mItemHeight);
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listItem->setPropertyFieldsDirty(RenderNode::X | RenderNode::Y);
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// draw it to parent DisplayList
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canvas->drawRenderNode(mListItems[ci].get());
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}
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canvas->finishRecording(mListView.get());
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}
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} // namespace test
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} // namespace uirenderer
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} // namespace android
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