src/cocoa/NSView.mm

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        cocoa/NSView.mm
   3 // Purpose:     wxCocoaNSView
   4 // Author:      David Elliott
   5 // Modified by:
   6 // Created:     2003/02/15
   7 // RCS-ID:      $Id:
   8 // Copyright:   (c) 2003 David Elliott
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #include "wx/wxprec.h"
  21 #ifndef WX_PRECOMP
  22     #include "wx/window.h"
  23 #endif // WX_PRECOMP
  24
  25 #include "wx/cocoa/NSView.h"
  26
  27 #import <Appkit/NSView.h>
  28 #import <Foundation/NSNotification.h>
  29 #import <Foundation/NSString.h>
  30
  31 // ----------------------------------------------------------------------------
  32 // globals
  33 // ----------------------------------------------------------------------------
  34 WX_IMPLEMENT_OBJC_INTERFACE_HASHMAP(NSView)
  35
  36 void wxCocoaNSView::AssociateNSView(WX_NSView cocoaNSView)
  37 {
  38     sm_cocoaHash.insert(wxCocoaNSViewHash::value_type(cocoaNSView,this));
  39     [[NSNotificationCenter defaultCenter] addObserver:(id)sm_cocoaObserver selector:@selector(notificationFrameChanged:) name:@"NSViewFrameDidChangeNotification" object:cocoaNSView];
  40     [cocoaNSView setPostsFrameChangedNotifications: YES];
  41 }
  42
  43 void wxCocoaNSView::DisassociateNSView(WX_NSView cocoaNSView)
  44 {
  45     sm_cocoaHash.erase(cocoaNSView);
  46     [[NSNotificationCenter defaultCenter] removeObserver:(id)sm_cocoaObserver name:@"NSViewFrameDidChangeNotification" object:cocoaNSView];
  47 }
  48
  49 // ============================================================================
  50 // @class wxPoserNSView
  51 // ============================================================================
  52 @interface wxPoserNSView : NSView
  53 {
  54 }
  55
  56 - (void)drawRect: (NSRect)rect;
  57 @end // wxPoserNSView
  58
  59 WX_IMPLEMENT_POSER(wxPoserNSView);
  60 @implementation wxPoserNSView : NSView
  61
  62 - (void)drawRect: (NSRect)rect
  63 {
  64     wxCocoaNSView *win = wxCocoaNSView::GetFromCocoa(self);
  65     if( !win || !win->Cocoa_drawRect(rect) )
  66         [super drawRect:rect];
  67 }
  68
  69 @end // implementation wxPoserNSView
  70
  71 @interface wxNSViewNotificationObserver : NSObject
  72 {
  73 }
  74
  75 // FIXME: Initializing like this is a really bad idea.  If for some reason
  76 // we ever require posing as an NSObject we won't be able to since an instance
  77 // will have already been created here.  Of course, catching messages for
  78 // NSObject seems like a LOT of overkill, so I doubt we ever will anyway!
  79 void *wxCocoaNSView::sm_cocoaObserver = [[wxNSViewNotificationObserver alloc] init];
  80
  81 - (void)notificationFrameChanged: (NSNotification *)notification;
  82 @end // interface wxNSViewNotificationObserver
  83
  84 @implementation wxNSViewNotificationObserver : NSObject
  85
  86 - (void)notificationFrameChanged: (NSNotification *)notification;
  87 {
  88     wxCocoaNSView *win = wxCocoaNSView::GetFromCocoa([notification object]);
  89     wxCHECK_RET(win,"notificationFrameChanged received but no wxWindow exists");
  90     win->Cocoa_FrameChanged();
  91 }
  92
  93 @end // implementation wxNSViewNotificationObserver
  94