void updateEffectiveRect()
{
if (clipRectStack.empty())
{
haveEffectiveRect = false;
return;
}
ClipRect result = { 0, 0, 0x7fffffff, 0x7fffffff };
for (int i = 0; i < clipRectStack.size(); ++i)
{
const ClipRect& rect = clipRectStack[i];
int right = std::min<int>(result.x + result.width, rect.x + rect.width);
int bottom = std::min<int>(result.y + result.height, rect.y + rect.height);
result.x = std::max<int>(result.x, rect.x);
result.y = std::max<int>(result.y, rect.y);
if (result.x >= right || result.y >= bottom)
{
haveEffectiveRect = false;
return;
}
result.width = right - result.x;
result.height = bottom - result.y;
}
int fac = clipRectBaseFactor();
result.x *= fac, result.y *= fac, result.width *= fac, result.height *= fac;
effectiveRect = result;
haveEffectiveRect = true;
}
void updateEffectiveRect()
{
// Nothing to do, no clipping in place.
if (stack.empty())
{
hasEffectiveRect = false;
return;
}
ClipRect result = { 0.0, 0.0, 1e10, 1e10 };
for (std::size_t i = 0, end = stack.size(); i < end; ++i)
{
const ClipRect& rect = stack[i];
int resultRight = std::min(result.x + result.width, rect.x + rect.width);
int resultBottom = std::min(result.y + result.height, rect.y + rect.height);
result.x = std::max(result.x, rect.x);
result.y = std::max(result.y, rect.y);
if (result.x >= resultRight || result.y >= resultBottom)
{
// We have clipped the world away!
hasEffectiveRect = false;
return;
}
result.width = resultRight - result.x;
result.height = resultBottom - result.y;
}
// On the iPhone, we may have to multiply everything by 2 for Retina displays.
// TODO: Doesn't this affect Retina Macs as well?
// TODO: This should be handled by a global transform.
int fac = clipRectBaseFactor();
result.x *= fac, result.y *= fac, result.width *= fac, result.height *= fac;
// Normal clipping.
effectiveRect = result;
hasEffectiveRect = true;
}