C++ ZRect::Top方法代码示例

void ZDCCanvas_X_NonWindow::CopyFrom(ZDCState& ioState, const ZPoint& inDestLocation, ZRef<ZDCCanvas> inSourceCanvas, const ZDCState& inSourceState, const ZRect& inSourceRect)
	{
	ZRef<ZDCCanvas_X> sourceCanvasX = ZRefDynamicCast<ZDCCanvas_X>(inSourceCanvas);
	ZAssertStop(kDebug_X, sourceCanvasX != nil);

	if (!fDrawable || !sourceCanvasX->Internal_GetDrawable())
		return;

	SetupLock theSetupLock(this);

	// We can (currently) only copy from one drawable to another if they're on the same display
	//	ZAssertStop(kDebug_X, fXServer == sourceCanvasX->fXServer);

	ZRect destRect = inSourceRect + (ioState.fOrigin + inDestLocation - inSourceRect.TopLeft());
	ZRect sourceRect = inSourceRect + inSourceState.fOrigin;

	ZDCRgn realClip = this->Internal_CalcClipRgn(ioState);

	fXServer->SetRegion(fGC, realClip.GetRegion());
	++fChangeCount_Clip;

	fXServer->SetFunction(fGC, GXcopy);
	++fChangeCount_Mode;

	fXServer->CopyArea(sourceCanvasX->Internal_GetDrawable(), fDrawable, fGC,
				sourceRect.Left(), sourceRect.Top(),
				sourceRect.Width(), sourceRect.Height(),
				destRect.Left(), destRect.Top());
	}

void ZDCCanvas_X_NonWindow::Scroll(ZDCState& ioState, const ZRect& inRect, ZCoord hDelta, ZCoord vDelta)
	{
	if (!fDrawable)
		return;
	SetupLock theSetupLock(this);

	++fChangeCount_Clip;

	ZPoint offset(hDelta, vDelta);

	// destRgn is the pixels we want and are able to draw to.
	ZDCRgn destRgn = ((ioState.fClip + ioState.fClipOrigin) & (inRect + ioState.fOrigin));

	// srcRgn is the set of pixels we're want and are able to copy from.
	ZDCRgn srcRgn = ((destRgn - offset) & (inRect + ioState.fOrigin));

	// drawnRgn is the destination pixels that will be drawn by the CopyBits call, it's the srcRgn
	// shifted back to the destination.
	ZDCRgn drawnRgn = srcRgn + offset;

	// invalidRgn is the destination pixels we wanted to draw but could not because they were
	// outside the visRgn, or were in the excludeRgn
	ZDCRgn invalidRgn = destRgn - drawnRgn;

	// And set the clip (drawnRgn)
	fXServer->SetRegion(fGC, drawnRgn.GetRegion());
	++fChangeCount_Clip;

	fXServer->SetFunction(fGC, GXcopy);
	++fChangeCount_Mode;

	ZRect drawnBounds = drawnRgn.Bounds();

	fXServer->CopyArea(fDrawable, fDrawable, fGC,
				drawnBounds.Left() - offset.h, drawnBounds.Top() - offset.v,
				drawnBounds.Width(), drawnBounds.Height(),
				drawnBounds.Left(), drawnBounds.Top());
	}

bool ZRect::Contains(const ZRect &rect) const
{
    //contains all 4 points
    return Contains(rect.Left(),rect.Top()) && Contains(rect.Right(),rect.Top()) &&
        Contains(rect.Left(),rect.Bottom()) && Contains(rect.Right(),rect.Bottom());
}

bool ZRect::Intersects(const ZRect &rect) const
{
    return !(rX > rect.Right() || rect.Left() > rX+rWidth ||
        rY > rect.Bottom() || rect.Top() > rY+rHeight);
}