void doFrame(int frameNr) override {
int scrollPx = dp(frameNr) * 3;
int cardIndexOffset = scrollPx / (cardSpacing + cardHeight);
int pxOffset = -(scrollPx % (cardSpacing + cardHeight));
TestCanvas canvas(
listView->stagingProperties().getWidth(),
listView->stagingProperties().getHeight());
for (size_t ci = 0; ci < cards.size(); ci++) {
// update card position
auto card = cards[(ci + cardIndexOffset) % cards.size()];
int top = ((int)ci) * (cardSpacing + cardHeight) + pxOffset;
card->mutateStagingProperties().setLeftTopRightBottom(
cardLeft, top, cardLeft + cardWidth, top + cardHeight);
card->setPropertyFieldsDirty(RenderNode::X | RenderNode::Y);
// draw it to parent DisplayList
canvas.drawRenderNode(cards[ci].get());
}
listView->setStagingDisplayList(canvas.finishRecording(), nullptr);
}
void TestListViewSceneBase::doFrame(int frameNr) {
int scrollPx = dp(frameNr) * 3;
int itemIndexOffset = scrollPx / (mItemSpacing + mItemHeight);
int pxOffset = -(scrollPx % (mItemSpacing + mItemHeight));
std::unique_ptr<Canvas> canvas(Canvas::create_recording_canvas(
mListView->stagingProperties().getWidth(), mListView->stagingProperties().getHeight(),
mListView.get()));
for (size_t ci = 0; ci < mListItems.size(); ci++) {
// update item position
auto listItem = mListItems[(ci + itemIndexOffset) % mListItems.size()];
int top = ((int)ci) * (mItemSpacing + mItemHeight) + pxOffset;
listItem->mutateStagingProperties().setLeftTopRightBottom(
mItemLeft, top, mItemLeft + mItemWidth, top + mItemHeight);
listItem->setPropertyFieldsDirty(RenderNode::X | RenderNode::Y);
// draw it to parent DisplayList
canvas->drawRenderNode(mListItems[ci].get());
}
mListView->setStagingDisplayList(canvas->finishRecording());
}
