C++ (Cpp) DrawingContext::UpdateCurrentDrawingRegionの例

コード例 #1

ファイル: ServerPicture.cpp プロジェクト: simonsouth/haiku

static void
set_clipping_rects(void* _context, size_t numRects, const BRect rects[])
{
	DrawingContext* context = reinterpret_cast<DrawingContext *>(_context);

	// TODO: This might be too slow, we should copy the rects
	// directly to BRegion's internal data
	BRegion region;
	for (uint32 c = 0; c < numRects; c++)
		region.Include(rects[c]);

	context->SetUserClipping(&region);
	context->UpdateCurrentDrawingRegion();
}

コード例 #2

ファイル: ServerPicture.cpp プロジェクト: simonsouth/haiku

static void
clip_to_picture(void* _context, int32 pictureToken, const BPoint& where,
	bool clipToInverse)
{
	DrawingContext* context = reinterpret_cast<DrawingContext *>(_context);

	ServerPicture* picture = context->GetPicture(pictureToken);
	if (picture == NULL)
		return;

	AlphaMask* mask = new(std::nothrow) AlphaMask(
		picture, clipToInverse, where, *context->CurrentState());
	context->SetAlphaMask(mask);
	context->UpdateCurrentDrawingRegion();
	if (mask != NULL)
		mask->ReleaseReference();

	picture->ReleaseReference();
}