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
createContent(int width,int height,Canvas & canvas)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
doFrame(int frameNr)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