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(EasyGraphicsItem) Painting optimization

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This commit is contained in:
Victor Zarubkin 2016-11-19 02:26:54 +03:00
parent c08c870b58
commit 03587cb45b
1 changed files with 4 additions and 1 deletions
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5
profiler_gui/easy_graphics_item.cpp
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@ -234,6 +234,9 @@ void EasyGraphicsItem::paint(QPainter* _painter, const QStyleOptionGraphicsItem*
char state = BLOCK_ITEM_DO_PAINT;
const auto top = levelY(l);
if (top > visibleBottom)
break;
qreal prevRight = -1e100;
for (unsigned int i = m_levelsIndexes[l], end = static_cast<unsigned int>(level.size()); i < end; ++i)
{
@ -247,7 +250,7 @@ void EasyGraphicsItem::paint(QPainter* _painter, const QStyleOptionGraphicsItem*
state = item.state;
}
if (item.right() < sceneLeft || state == BLOCK_ITEM_DO_NOT_PAINT || top > visibleBottom || (top + item.totalHeight) < visibleSceneRect.top())
if (item.right() < sceneLeft || state == BLOCK_ITEM_DO_NOT_PAINT || (top + item.totalHeight) < visibleSceneRect.top())
{
// This item is not visible
skip_children(next_level, item.children_begin);