/*********************************************************************** * create_surface_image * * Caller must hold the surface lock. On input, *rect is the requested * image rect, relative to the window whole_rect, a.k.a. visible_rect. * On output, it's been intersected with that part backed by the surface * and is the actual size of the returned image. copy_data indicates if * the caller will keep the returned image beyond the point where the * surface bits can be guaranteed to remain valid and unchanged. If so, * the bits are copied instead of merely referenced by the image. * * IMPORTANT: This function is called from non-Wine threads, so it * must not use Win32 or Wine functions, including debug * logging. */ CGImageRef create_surface_image(void *window_surface, CGRect *rect, int copy_data) { CGImageRef cgimage = NULL; struct macdrv_window_surface *surface = get_mac_surface(window_surface); int width, height; width = surface->header.rect.right - surface->header.rect.left; height = surface->header.rect.bottom - surface->header.rect.top; *rect = CGRectIntersection(cgrect_from_rect(surface->header.rect), *rect); if (!CGRectIsEmpty(*rect)) { CGRect visrect; CGColorSpaceRef colorspace; CGDataProviderRef provider; int bytes_per_row, offset, size; CGImageAlphaInfo alphaInfo; visrect = CGRectOffset(*rect, -surface->header.rect.left, -surface->header.rect.top); colorspace = CGColorSpaceCreateWithName(kCGColorSpaceGenericRGB); bytes_per_row = get_dib_stride(width, 32); offset = CGRectGetMinX(visrect) * 4 + (height - CGRectGetMaxY(visrect)) * bytes_per_row; size = min(CGRectGetHeight(visrect) * bytes_per_row, surface->info.bmiHeader.biSizeImage - offset); if (copy_data) { CFDataRef data = CFDataCreate(NULL, (UInt8*)surface->bits + offset, size); provider = CGDataProviderCreateWithCFData(data); CFRelease(data); } else provider = CGDataProviderCreateWithData(NULL, surface->bits + offset, size, NULL); alphaInfo = surface->use_alpha ? kCGImageAlphaPremultipliedFirst : kCGImageAlphaNoneSkipFirst; cgimage = CGImageCreate(CGRectGetWidth(visrect), CGRectGetHeight(visrect), 8, 32, bytes_per_row, colorspace, alphaInfo | kCGBitmapByteOrder32Little, provider, NULL, FALSE, kCGRenderingIntentDefault); CGDataProviderRelease(provider); CGColorSpaceRelease(colorspace); } return cgimage; }
static void HIOpenGLViewSetContextWindowAndBounds (HIOpenGLViewData* inData) { if (inData == nil) return; if (inData->mControl == nil) return; if (inData->mContext == nil) return; // Determine the AGL_BUFFER_RECT for the control. The coordinate // system for this rectangle is relative to the owning window, with // the origin at the bottom left corner and the y-axis inverted. HIRect ctrlBounds, winBounds; HIViewGetBounds(inData->mControl, &ctrlBounds); WindowRef window = GetControlOwner(inData->mControl); ControlRef root = nil; GetRootControl(window, &root); HIViewGetBounds(root, &winBounds); HIViewConvertRect(&ctrlBounds, inData->mControl, root); GLint bufferRect[4] = { (int)ctrlBounds.origin.x, (int)((winBounds.size.height) - (ctrlBounds.origin.y + ctrlBounds.size.height)), (int)ctrlBounds.size.width, (int)ctrlBounds.size.height }; // Associate the OpenGL context with the control's window, and establish the buffer rect. aglSetDrawable(inData->mContext, GetWindowPort(window)); aglSetInteger(inData->mContext, AGL_BUFFER_RECT, bufferRect); aglEnable(inData->mContext, AGL_BUFFER_RECT); // Establish the clipping region for the OpenGL context. To properly handle clipping // within the view hierarchy, I'm walking the hierarchy to determine the intersection // of this view's bounds with its parents. Is there an easier way to do this? CGRect clipBounds = ctrlBounds; HIViewRef parent = HIViewGetSuperview(inData->mControl); while (parent != root) { CGRect parentBounds; HIViewGetBounds(parent, &parentBounds); HIViewConvertRect(&parentBounds, parent, root); clipBounds = CGRectIntersection(clipBounds, parentBounds); parent = HIViewGetSuperview(parent); } Rect rgnBounds = { (int)clipBounds.origin.y, (int)clipBounds.origin.x, (int)(clipBounds.origin.y + clipBounds.size.height), (int)(clipBounds.origin.x + clipBounds.size.width) }; RgnHandle rgn = NewRgn(); RectRgn(rgn, &rgnBounds); aglSetInteger(inData->mContext, AGL_CLIP_REGION, (const GLint*)rgn); aglEnable(inData->mContext, AGL_CLIP_REGION); }