X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/28f3fe51bddd89bf473581eaca1a15c8f3b0e2c5..69fb2f97492421b85b661add445012e98c1eaea9:/src/cocoa/dcmemory.mm diff --git a/src/cocoa/dcmemory.mm b/src/cocoa/dcmemory.mm index e097fea9a5..0eb5905b14 100644 --- a/src/cocoa/dcmemory.mm +++ b/src/cocoa/dcmemory.mm @@ -1,75 +1,131 @@ ///////////////////////////////////////////////////////////////////////////// // Name: src/cocoa/dcmemory.mm -// Purpose: wxMemoryDC class +// Purpose: wxMemoryDCImpl class // Author: David Elliott // Modified by: // Created: 2003/03/16 // RCS-ID: $Id$ // Copyright: (c) 2002 David Elliott -// Licence: wxWindows licence +// Licence: wxWidgets licence ///////////////////////////////////////////////////////////////////////////// -#include "wx/dcmemory.h" +#include "wx/wxprec.h" + +#ifndef WX_PRECOMP + #include "wx/log.h" +#endif //WX_PRECOMP + +#include "wx/cocoa/dcmemory.h" +#include "wx/cocoa/autorelease.h" #import +#import +#import +#import +#import //----------------------------------------------------------------------------- -// wxMemoryDC +// wxMemoryDCImpl //----------------------------------------------------------------------------- -IMPLEMENT_DYNAMIC_CLASS(wxMemoryDC,wxDC) +IMPLEMENT_ABSTRACT_CLASS(wxMemoryDCImpl,wxCocoaDCImpl) -wxMemoryDC::wxMemoryDC(void) +void wxMemoryDCImpl::Init() { m_cocoaNSImage = NULL; m_ok = false; } -wxMemoryDC::wxMemoryDC( wxDC *WXUNUSED(dc) ) +wxMemoryDCImpl::wxMemoryDCImpl(wxMemoryDC *owner, wxDC *WXUNUSED(dc)) +: wxCocoaDCImpl(owner) { - m_cocoaNSImage = NULL; - m_ok = false; + Init(); } -wxMemoryDC::~wxMemoryDC(void) +wxMemoryDCImpl::~wxMemoryDCImpl(void) { CocoaUnwindStackAndLoseFocus(); [m_cocoaNSImage release]; } -bool wxMemoryDC::CocoaLockFocus() +bool wxMemoryDCImpl::CocoaLockFocus() { if(m_cocoaNSImage) { - [m_cocoaNSImage lockFocusOnRepresentation: m_selectedBitmap.GetNSBitmapImageRep()]; + [m_cocoaNSImage lockFocus]; sm_cocoaDCStack.Insert(this); + NSAffineTransform *newTransform = CocoaGetWxToBoundsTransform([m_cocoaNSImage isFlipped], [m_cocoaNSImage size].height); + [newTransform retain]; + [m_cocoaWxToBoundsTransform release]; + m_cocoaWxToBoundsTransform = newTransform; + CocoaApplyTransformations(); return true; } return false; } -bool wxMemoryDC::CocoaUnlockFocus() +bool wxMemoryDCImpl::CocoaUnlockFocus() { [m_cocoaNSImage unlockFocus]; return true; } -void wxMemoryDC::SelectObject( const wxBitmap& bitmap ) +// NOTE: The AppKit is unable to draw onto an NSBitmapImageRep so we must +// instead copy the data to an offscreen window, then copy it back +void wxMemoryDCImpl::DoSelect( const wxBitmap& bitmap ) { + wxAutoNSAutoreleasePool pool; + if(m_selectedBitmap.Ok()) + { + CocoaTakeFocus(); + wxASSERT(m_cocoaNSImage); + // Replace the bitmap's native data with a newly created one based on the + // NSImage that has been (potentially) drawn upon. Note that this may and + // probably will in many cases change the bitmap's format. + // There is nothing we can do about this using pure Cocoa code. Even using + // CGBitmapContext is not an option because it only supports a limited + // number of bitmap formats. Specifically, 24-bpp is not supported. + m_selectedBitmap.SetNSBitmapImageRep( + [[NSBitmapImageRep alloc] + initWithFocusedViewRect:NSMakeRect(0.0,0.0, + m_selectedBitmap.GetWidth(), + m_selectedBitmap.GetHeight())]); + } CocoaUnwindStackAndLoseFocus(); [m_cocoaNSImage release]; m_cocoaNSImage = nil; m_selectedBitmap = bitmap; if(m_selectedBitmap.Ok()) { + // Create an offscreen window of the same size m_cocoaNSImage = [[NSImage alloc] initWithSize:NSMakeSize(m_selectedBitmap.GetWidth(), m_selectedBitmap.GetHeight())]; - [m_cocoaNSImage addRepresentation: m_selectedBitmap.GetNSBitmapImageRep()]; + + // Now copy the data + // Pass false to GetNSImage so the mask is not applied as an alpha channel. + // Cocoa uses premultiplied alpha so applying the mask would cause all + // color information masked out to be turned black which is undesirable. + // FIXME: Currently, the mask will not be updated if any drawing occurs. + // My only suggestion is for wxCocoa users to eschew the mask in favor + // of an alpha channel or to recreate the mask after drawing. + // The only way to fix this is to draw twice, once as normal and again + // onto the mask to update it. That would require overriding every + // single drawing primitive (e.g. DoDrawLine, DoDrawRectangle, etc.) + // and would be a major undertaking. + NSImage *nsimage = [m_selectedBitmap.GetNSImage(false) retain]; + [m_cocoaNSImage lockFocus]; + [nsimage drawAtPoint: NSMakePoint(0,0) + fromRect: NSMakeRect(0.0,0.0,m_selectedBitmap.GetWidth(),m_selectedBitmap.GetHeight()) + operation: NSCompositeCopy + fraction: 1.0]; + [m_cocoaNSImage unlockFocus]; + + [nsimage release]; } } -void wxMemoryDC::DoGetSize( int *width, int *height ) const +void wxMemoryDCImpl::DoGetSize( int *width, int *height ) const { if(width) *width = m_selectedBitmap.GetWidth(); @@ -77,3 +133,88 @@ void wxMemoryDC::DoGetSize( int *width, int *height ) const *height = m_selectedBitmap.GetHeight(); } +bool wxMemoryDCImpl::CocoaDoBlitOnFocusedDC(wxCoord xdest, wxCoord ydest, + wxCoord width, wxCoord height, wxCoord xsrc, wxCoord ysrc, + int logicalFunc, bool useMask, wxCoord xsrcMask, wxCoord ysrcMask) +{ + if(!m_selectedBitmap.Ok()) + return false; + + NSAffineTransform *transform = [NSAffineTransform transform]; + [transform translateXBy:xdest yBy:ydest]; + + NSAffineTransform *flipTransform = [NSAffineTransform transform]; + /* x' = 1x + 0y + 0 + y' = 0x + -1y + window's height + */ + NSAffineTransformStruct matrix = { + 1, 0 + , 0, -1 + , 0, height + }; + [flipTransform setTransformStruct: matrix]; + + NSGraphicsContext *context = [NSGraphicsContext currentContext]; + [context saveGraphicsState]; + [transform concat]; + [flipTransform concat]; + + NSImage *sourceImage; + if(useMask) + { + sourceImage = [m_cocoaNSImage copy]; + // Apply the mask to the copied image + NSBitmapImageRep *maskRep = m_selectedBitmap.GetMask()->GetNSBitmapImageRep(); + NSImage *maskImage = [[NSImage alloc] initWithSize:[maskRep size]]; + [maskImage addRepresentation:maskRep]; + [sourceImage lockFocus]; + [maskImage compositeToPoint:NSZeroPoint operation:NSCompositeDestinationIn]; + [sourceImage unlockFocus]; + [maskImage release]; + } + else + { // retain the m_cocoaNSImage so it has the same ownership as the copy done in the other case. + sourceImage = [m_cocoaNSImage retain]; + } + NSCompositingOperation drawingOp; + switch(logicalFunc) + { + case wxCOPY: + // Even if not using the mask, the image might have an alpha channel + // so always use NSCompositeSourceOver. If the image is fully opaque + // it works out the same as NSCompositeCopy. + drawingOp = NSCompositeSourceOver; + break; + // FIXME: implement more raster ops + default: + wxLogDebug(wxT("wxCocoa does not support blitting with raster operation %d."), logicalFunc); + // Just use the default operation. + drawingOp = NSCompositeCopy; + } + + wxLogTrace(wxTRACE_COCOA,wxT("[m_cocoaNSImage isFlipped]=%d"), [m_cocoaNSImage isFlipped]); + [sourceImage drawAtPoint: NSMakePoint(0,0) + fromRect: NSMakeRect(xsrc, + m_selectedBitmap.GetHeight()-height-ysrc, + width, height) + operation: drawingOp + fraction: 1.0]; + + [sourceImage release]; // It was either retained, copied, or allocated. + [context restoreGraphicsState]; + return false; +} + +bool wxMemoryDCImpl::CocoaGetBounds(void *rectData) +{ + if(!rectData) + return false; + if(!m_cocoaNSImage) + return false; + NSRect *pRect = (NSRect*)rectData; + pRect->origin.x = 0.0; + pRect->origin.y = 0.0; + pRect->size = [m_cocoaNSImage size]; + return true; +} +