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serenity/Widgets/Rect.cpp
Andreas Kling 07873332e7 Coalesce mouse events to make the GUI go fast.
A simple but effective optimization that avoids tons of redraw. :^)
2019-01-12 06:59:10 +01:00

22 lines
489 B
C++

#include "Rect.h"
#include <AK/StdLibExtras.h>
#include "kstdio.h"
void Rect::intersect(const Rect& other)
{
int l = max(left(), other.left());
int r = min(right(), other.right());
int t = max(top(), other.top());
int b = min(bottom(), other.bottom());
if (l >= r || t >= b) {
m_location = { };
m_size = { };
return;
}
m_location.setX(l);
m_location.setY(t);
m_size.setWidth((r - l) + 1);
m_size.setHeight((b - t) + 1);
}