diff options
Diffstat (limited to 'macosx/tkMacOSXDraw.c')
| -rw-r--r-- | macosx/tkMacOSXDraw.c | 173 |
1 files changed, 106 insertions, 67 deletions
diff --git a/macosx/tkMacOSXDraw.c b/macosx/tkMacOSXDraw.c index 0727b26..167277f 100644 --- a/macosx/tkMacOSXDraw.c +++ b/macosx/tkMacOSXDraw.c @@ -114,10 +114,79 @@ TkMacOSXInitCGDrawing( /* *---------------------------------------------------------------------- * + * BitmapRepFromDrawableRect + * + * Extract bitmap data from a MacOSX drawable as an NSBitmapImageRep. + * + * Results: + * Returns an autoreleased NSBitmapRep representing the image of the given + * rectangle of the given drawable. + * + * NOTE: The x,y coordinates should be relative to a coordinate system with + * origin at the top left, as used by XImage and CGImage, not bottom + * left as used by NSView. + * + * Side effects: + * None + * + *---------------------------------------------------------------------- + */ +NSBitmapImageRep* +BitmapRepFromDrawableRect( + Drawable drawable, + int x, + int y, + unsigned int width, + unsigned int height) +{ + MacDrawable *mac_drawable = (MacDrawable *) drawable; + CGContextRef cg_context=NULL; + CGImageRef cg_image=NULL, sub_cg_image=NULL; + NSBitmapImageRep *bitmap_rep=NULL; + NSView *view=NULL; + if ( mac_drawable->flags & TK_IS_PIXMAP ) { + /* + This means that the MacDrawable is functioning as a Tk Pixmap, so its view + field is NULL. It's context field should point to a CGImage. + */ + cg_context = GetCGContextForDrawable(drawable); + CGRect image_rect = CGRectMake(x, y, width, height); + cg_image = CGBitmapContextCreateImage( (CGContextRef) cg_context); + sub_cg_image = CGImageCreateWithImageInRect(cg_image, image_rect); + if ( sub_cg_image ) { + bitmap_rep = [[NSBitmapImageRep alloc] autorelease]; + [bitmap_rep initWithCGImage:sub_cg_image]; + } + if ( cg_image ) { + CGImageRelease(cg_image); + } + } else if ( (view = TkMacOSXDrawableView(mac_drawable)) ) { + /* convert top-left coordinates to NSView coordinates */ + int view_height = [view bounds].size.height; + NSRect view_rect = NSMakeRect(x + mac_drawable->xOff, + view_height - height - y - mac_drawable->yOff, + width,height); + + if ( [view lockFocusIfCanDraw] ) { + bitmap_rep = [[NSBitmapImageRep alloc] autorelease]; + bitmap_rep = [bitmap_rep initWithFocusedViewRect:view_rect]; + [view unlockFocus]; + } else { + TkMacOSXDbgMsg("Could not lock focus on view."); + } + + } else { + TkMacOSXDbgMsg("Invalid source drawable"); + } + return bitmap_rep; +} + +/* + *---------------------------------------------------------------------- + * * XCopyArea -- * - * Copies data from one drawable to another using block transfer - * routines. + * Copies data from one drawable to another. * * Results: * None. @@ -144,76 +213,52 @@ XCopyArea( { TkMacOSXDrawingContext dc; MacDrawable *srcDraw = (MacDrawable *) src; + NSBitmapImageRep *bitmap_rep = NULL; + CGImageRef img = NULL; display->request++; + + TkMacOSXDbgMsg("XCopyArea"); + if (!width || !height) { - /* TkMacOSXDbgMsg("Drawing of emtpy area requested"); */ + /* This happens all the time. + TkMacOSXDbgMsg("Drawing of empty area requested"); + */ return; } - if (srcDraw->flags & TK_IS_PIXMAP) { - if (!TkMacOSXSetupDrawingContext(dst, gc, 1, &dc)) { - return; - } - if (dc.context) { - CGImageRef img = TkMacOSXCreateCGImageWithDrawable(src); - if (img) { - DrawCGImage(dst, gc, dc.context, img, gc->foreground, - gc->background, CGRectMake(0, 0, - srcDraw->size.width, srcDraw->size.height), - CGRectMake(src_x, src_y, width, height), - CGRectMake(dest_x, dest_y, width, height)); - CFRelease(img); - } else { - TkMacOSXDbgMsg("Invalid source drawable"); + if (!TkMacOSXSetupDrawingContext(dst, gc, 1, &dc)) { + TkMacOSXDbgMsg("Failed to setup drawing context."); + } + + if ( dc.context ) { + if (srcDraw->flags & TK_IS_PIXMAP) { + img = TkMacOSXCreateCGImageWithDrawable(src); + }else if (TkMacOSXDrawableWindow(src)) { + bitmap_rep = BitmapRepFromDrawableRect(src, src_x, src_y, width, height); + if ( bitmap_rep ) { + img = [bitmap_rep CGImage]; } } else { - TkMacOSXDbgMsg("Invalid destination drawable"); - } - TkMacOSXRestoreDrawingContext(&dc); - } else if (TkMacOSXDrawableWindow(src)) { - NSView *view = TkMacOSXDrawableView(srcDraw); - NSWindow *w = [view window]; - NSInteger gs = [w windowNumber] > 0 ? [w gState] : 0; - /* // alternative using per-view gState: - NSInteger gs = [view gState]; - if (!gs) { - [view allocateGState]; - if ([view lockFocusIfCanDraw]) { - [view unlockFocus]; - } - gs = [view gState]; - } - */ - if (!gs || !TkMacOSXSetupDrawingContext(dst, gc, 1, &dc)) { - return; + TkMacOSXDbgMsg("Invalid source drawable"); } - if (dc.context) { - NSGraphicsContext *gc = nil; - CGFloat boundsH = [view bounds].size.height; - NSRect srcRect = NSMakeRect(srcDraw->xOff + src_x, boundsH - - height - (srcDraw->yOff + src_y), width, height); - - if (((MacDrawable *) dst)->flags & TK_IS_PIXMAP) { - gc = [NSGraphicsContext graphicsContextWithGraphicsPort: - dc.context flipped:NO]; - if (gc) { - [NSGraphicsContext saveGraphicsState]; - [NSGraphicsContext setCurrentContext:gc]; - } - } - NSCopyBits(gs, srcRect, NSMakePoint(dest_x, - dc.portBounds.size.height - dest_y)); - if (gc) { - [NSGraphicsContext restoreGraphicsState]; - } + + if (img) { + DrawCGImage(dst, gc, dc.context, img, gc->foreground, gc->background, + CGRectMake(0, 0, srcDraw->size.width, srcDraw->size.height), + CGRectMake(src_x, src_y, width, height), + CGRectMake(dest_x, dest_y, width, height)); + CFRelease(img); } else { - TkMacOSXDbgMsg("Invalid destination drawable"); + TkMacOSXDbgMsg("Invalid source drawable"); } - TkMacOSXRestoreDrawingContext(&dc); + } else { - TkMacOSXDbgMsg("Invalid source drawable"); + TkMacOSXDbgMsg("Invalid destination drawable"); + return; } + + TkMacOSXRestoreDrawingContext(&dc); } /* @@ -254,7 +299,7 @@ XCopyPlane( display->request++; if (!width || !height) { - /* TkMacOSXDbgMsg("Drawing of emtpy area requested"); */ + /* TkMacOSXDbgMsg("Drawing of empty area requested"); */ return; } if (plane != 1) { @@ -384,13 +429,7 @@ CreateCGImageWithXImage( char *data = NULL; CGDataProviderReleaseDataCallback releaseData = ReleaseData; - if (image->obdata) { - /* - * Image from XGetImage - */ - - img = TkMacOSXCreateCGImageWithDrawable((Pixmap) image->obdata); - } else if (image->bits_per_pixel == 1) { + if (image->bits_per_pixel == 1) { /* * BW image */ |