bool ZUITextEngine::Click(ZPoint inHitPoint, const ZEvent_Mouse& inEvent)
{
size_t selectStart, selectLength;
this->GetSelection(selectStart, selectLength);
if (selectLength != 0)
{
size_t cursorOffset = this->PointToOffset(this->FromHost(inHitPoint));
if (cursorOffset >= selectStart && cursorOffset < selectStart + selectLength)
{
if (fHost->GetHostPane(this)->GetWindow()->WaitForMouse())
{
ZTuple theTuple = this->GetTuple(selectStart, selectLength);
if (ZDragInitiator* theDragInitiator = fHost->GetHostPane(this)->GetWindow()->CreateDragInitiator())
{
ZDC theDC = this->GetHostDC();
ZDCRgn hiliteRgn = theDC.GetClip() & this->GetTextRgn(selectStart, selectLength);
theDC.SetClip(hiliteRgn);
ZDCPixmap thePixmap;
ZPoint hiliteRgnSize = hiliteRgn.Bounds().Size();
if ((hiliteRgnSize.h * hiliteRgnSize.v) <= 90000)
{
ZDC_Off theOffDC(theDC, true);
this->DrawRange(theOffDC, selectStart, selectLength);
theOffDC.Sync();
thePixmap = theOffDC.GetPixmap(theOffDC.GetClip().Bounds());
}
ZPoint theOffset = hiliteRgn.Bounds().TopLeft();
hiliteRgn -= theOffset;
theDragInitiator->DoDrag(theTuple, fHost->GetHostPane(this)->ToGlobal(inHitPoint), this->FromHost(inHitPoint) - theOffset, theDragInitiator->OutlineRgn(hiliteRgn), thePixmap, hiliteRgn, this);
return true;
}
}
}
}
return false;
}
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());
}
