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Component: Improve opaque component checks

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- Improve default performance when components check if they are opaque
- Allows all components to take advantage of setPaintingIsUnclipped
- Give more control to opt out of opaque checks separate from setPaintingIsUnclipped
This commit is contained in:
Anthony Nicholls 2025-04-26 01:17:09 +01:00 • committed by Anthony Nicholls
parent 79dfa1d392
commit 961ff32b9e
3 changed files with 204 additions and 92 deletions
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44
modules/juce_gui_basics/detail/juce_ComponentHelpers.h
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@ -191,42 +191,6 @@ struct ComponentHelpers
return convertFromDistantParentSpace (topLevelComp, *target, p);
}
static bool clipChildComponent (const Component& child,
Graphics& g,
const Rectangle<int> clipRect,
Point<int> delta)
{
if (! child.isVisible() || child.isTransformed())
return false;
const auto newClip = clipRect.getIntersection (child.boundsRelativeToParent);
if (newClip.isEmpty())
return false;
if (child.isOpaque() && child.componentTransparency == 0)
{
g.excludeClipRegion (newClip + delta);
return true;
}
const auto childPos = child.getPosition();
return clipObscuredRegions (child, g, newClip - childPos, childPos + delta);
}
static bool clipObscuredRegions (const Component& comp,
Graphics& g,
const Rectangle<int> clipRect,
Point<int> delta)
{
auto wasClipped = false;
for (int i = comp.childComponentList.size(); --i >= 0;)
wasClipped |= clipChildComponent (*comp.childComponentList.getUnchecked (i), g, clipRect, delta);
return wasClipped;
}
static Rectangle<int> getParentOrMainMonitorBounds (const Component& comp)
{
if (auto* p = comp.getParentComponent())
@ -261,6 +225,14 @@ struct ComponentHelpers
function (c, ms, SH::screenPosToLocalPos (*c, ms.getScreenPosition()), Time::getCurrentTime());
}
static bool isVisible (const Component& component, bool allowTransparency = true)
{
return component.isVisible()
&& component.getWidth() > 0
&& component.getHeight() > 0
&& component.componentTransparency < (allowTransparency ? 255 : 1);
}
class ModalComponentManagerChangeNotifier
{
public: