//-----------------------------------------------------------------------------
bool CFrame::setZoom (double zoomFactor)
{
if (zoomFactor == 0.)
return false;
bool result = true;
CGraphicsTransform currentTransform = getTransform ();
CCoord origWidth = getWidth () / currentTransform.m11;
CCoord origHeight = getHeight () / currentTransform.m22;
CCoord newWidth = origWidth * zoomFactor;
CCoord newHeight = origHeight * zoomFactor;
setAutosizingEnabled (false);
setTransform (CGraphicsTransform ().scale (zoomFactor, zoomFactor));
if (!setSize (newWidth, newHeight))
{
setTransform (currentTransform);
setSize (origWidth * currentTransform.m11, origHeight * currentTransform.m22);
result = false;
}
invalid ();
setAutosizingEnabled (true);
return result;
}
//-----------------------------------------------------------------------------
CDrawContext::CDrawContext (const CRect& surfaceRect)
: drawStringHelper (0)
, surfaceRect (surfaceRect)
{
transformStack.push (CGraphicsTransform ());
}
