src/osx/cocoa/utils.mm

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/osx/cocoa/utils.mm
   3 // Purpose:     various cocoa utility functions
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     1998-01-01
   7 // RCS-ID:      $Id: utils.mm 48805 2007-09-19 14:52:25Z SC $
   8 // Copyright:   (c) Stefan Csomor
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/wxprec.h"
  13
  14 #include "wx/wxprec.h"
  15
  16 #include "wx/utils.h"
  17
  18 #ifndef WX_PRECOMP
  19     #include "wx/intl.h"
  20     #include "wx/app.h"
  21     #if wxUSE_GUI
  22         #include "wx/toplevel.h"
  23         #include "wx/font.h"
  24     #endif
  25 #endif
  26
  27 #include "wx/apptrait.h"
  28
  29 #include "wx/osx/private.h"
  30
  31 #if wxUSE_GUI
  32 #if wxOSX_USE_COCOA_OR_CARBON
  33     #include <CoreServices/CoreServices.h>
  34     #include "wx/osx/dcclient.h"
  35     #include "wx/osx/private/timer.h"
  36 #endif
  37 #endif // wxUSE_GUI
  38
  39 #if wxOSX_USE_COCOA
  40
  41 #if wxUSE_BASE
  42
  43 // Emit a beeeeeep
  44 void wxBell()
  45 {
  46     NSBeep();
  47 }
  48
  49 // ----------------------------------------------------------------------------
  50 // Common Event Support
  51 // ----------------------------------------------------------------------------
  52
  53 void wxMacWakeUp()
  54 {
  55     // TODO
  56 }
  57
  58 #endif // wxUSE_BASE
  59
  60 #if wxUSE_GUI
  61
  62 @interface wxNSAppController : NSObject
  63 {
  64 }
  65
  66 - (BOOL)applicationShouldTerminateAfterLastWindowClosed:(NSApplication *)sender;
  67 - (BOOL)application:(NSApplication *)sender openFile:(NSString *)filename;
  68 - (BOOL)applicationShouldOpenUntitledFile:(NSApplication *)sender;
  69 - (BOOL)application:(NSApplication *)sender printFile:(NSString *)filename;
  70 - (NSApplicationTerminateReply)applicationShouldTerminate:(NSApplication *)sender;
  71 - (void)handleGetURLEvent:(NSAppleEventDescriptor *)event
  72     withReplyEvent:(NSAppleEventDescriptor *)replyEvent;
  73 @end
  74
  75 @implementation wxNSAppController
  76
  77 - (BOOL)applicationShouldTerminateAfterLastWindowClosed:(NSApplication *)sender
  78 {
  79     wxUnusedVar(sender);
  80     // let wx do this, not cocoa
  81     return NO;
  82 }
  83
  84 - (BOOL)application:(NSApplication *)sender openFile:(NSString *)filename;
  85 {
  86     wxUnusedVar(sender);
  87     wxCFStringRef cf(wxCFRetain(filename));
  88     wxTheApp->MacOpenFile(cf.AsString()) ;
  89     return YES;
  90 }
  91
  92 - (BOOL)applicationShouldOpenUntitledFile:(NSApplication *)sender;
  93 {
  94     wxUnusedVar(sender);
  95     wxTheApp->MacNewFile() ;
  96     return NO;
  97 }
  98
  99 - (BOOL)application:(NSApplication *)sender printFile:(NSString *)filename
 100 {
 101     wxUnusedVar(sender);
 102     wxCFStringRef cf(wxCFRetain(filename));
 103     wxTheApp->MacPrintFile(cf.AsString()) ;
 104     return YES;
 105 }
 106
 107 /*
 108     Allowable return values are:
 109         NSTerminateNow - it is ok to proceed with termination
 110         NSTerminateCancel - the application should not be terminated
 111         NSTerminateLater - it may be ok to proceed with termination later.  The application must call -replyToApplicationShouldTerminate: with YES or NO once the answer is known
 112             this return value is for delegates who need to provide document modal alerts (sheets) in order to decide whether to quit.
 113 */
 114 - (NSApplicationTerminateReply)applicationShouldTerminate:(NSApplication *)sender
 115 {
 116     wxUnusedVar(sender);
 117     wxWindow* win = wxTheApp->GetTopWindow() ;
 118     if ( win )
 119     {
 120         wxCommandEvent exitEvent(wxEVT_COMMAND_MENU_SELECTED, wxApp::s_macExitMenuItemId);
 121         if (!win->GetEventHandler()->ProcessEvent(exitEvent))
 122             win->Close(true) ;
 123     }
 124     else
 125     {
 126          wxTheApp->ExitMainLoop() ;
 127     }
 128     return NSTerminateCancel;
 129 }
 130
 131 - (BOOL)applicationShouldHandleReopen:(NSApplication *)sender hasVisibleWindows:(BOOL)flag
 132 {
 133     wxUnusedVar(flag);
 134     wxUnusedVar(sender);
 135     wxTheApp->MacReopenApp() ;
 136     return NO;
 137 }
 138
 139 - (void)handleGetURLEvent:(NSAppleEventDescriptor *)event
 140     withReplyEvent:(NSAppleEventDescriptor *)replyEvent
 141 {
 142     wxUnusedVar(replyEvent);
 143     NSString* url = [[event descriptorAtIndex:1] stringValue];
 144     wxCFStringRef cf(wxCFRetain(url));
 145     wxTheApp->MacOpenURL(cf.AsString()) ;
 146 }
 147 @end
 148
 149 /*
 150     allows ShowModal to work when using sheets.
 151     see include/wx/osx/cocoa/private.h for more info
 152 */
 153 @implementation ModalDialogDelegate
 154 - (id)init
 155 {
 156     [super init];
 157     sheetFinished = NO;
 158     resultCode = -1;
 159     return self;
 160 }
 161
 162 - (BOOL)finished
 163 {
 164     return sheetFinished;
 165 }
 166
 167 - (int)code
 168 {
 169     return resultCode;
 170 }
 171
 172 - (void)waitForSheetToFinish
 173 {
 174     while (!sheetFinished)
 175     {
 176         wxSafeYield();
 177     }
 178 }
 179
 180 - (void)sheetDidEnd:(NSWindow *)sheet returnCode:(int)returnCode contextInfo:(void *)contextInfo
 181 {
 182     wxUnusedVar(contextInfo);
 183     resultCode = returnCode;
 184     sheetFinished = YES;
 185     // NSAlerts don't need nor respond to orderOut
 186     if ([sheet respondsToSelector:@selector(orderOut:)])
 187         [sheet orderOut: self];
 188 }
 189 @end
 190
 191 bool wxApp::DoInitGui()
 192 {
 193     wxMacAutoreleasePool pool;
 194     [NSApplication sharedApplication];
 195
 196     if (!sm_isEmbedded)
 197     {
 198         wxNSAppController* controller = [[wxNSAppController alloc] init];
 199         [[NSApplication sharedApplication] setDelegate:controller];
 200
 201         NSAppleEventManager *appleEventManager = [NSAppleEventManager sharedAppleEventManager];
 202         [appleEventManager setEventHandler:controller andSelector:@selector(handleGetURLEvent:withReplyEvent:)
 203             forEventClass:kInternetEventClass andEventID:kAEGetURL];
 204         [NSApp finishLaunching];
 205     }
 206     return true;
 207 }
 208
 209 void wxApp::DoCleanUp()
 210 {
 211 }
 212
 213 void wxClientDisplayRect(int *x, int *y, int *width, int *height)
 214 {
 215     NSRect displayRect = [[NSScreen mainScreen] visibleFrame];
 216     wxRect r = wxFromNSRect( NULL, displayRect );
 217     if ( x )
 218         *x = r.x;
 219     if ( y )
 220         *y = r.y;
 221     if ( width )
 222         *width = r.GetWidth();
 223     if ( height )
 224         *height = r.GetHeight();
 225
 226 }
 227
 228 void wxGetMousePosition( int* x, int* y )
 229 {
 230     wxPoint pt = wxFromNSPoint(NULL, [NSEvent mouseLocation]);
 231     if ( x )
 232         *x = pt.x;
 233     if ( y )
 234         *y = pt.y;
 235 };
 236
 237 wxTimerImpl* wxGUIAppTraits::CreateTimerImpl(wxTimer *timer)
 238 {
 239     return new wxOSXTimerImpl(timer);
 240 }
 241
 242 int gs_wxBusyCursorCount = 0;
 243 extern wxCursor    gMacCurrentCursor;
 244 wxCursor        gMacStoredActiveCursor;
 245
 246 // Set the cursor to the busy cursor for all windows
 247 void wxBeginBusyCursor(const wxCursor *cursor)
 248 {
 249     if (gs_wxBusyCursorCount++ == 0)
 250     {
 251         gMacStoredActiveCursor = gMacCurrentCursor;
 252         cursor->MacInstall();
 253
 254         wxSetCursor(*cursor);
 255     }
 256     //else: nothing to do, already set
 257 }
 258
 259 // Restore cursor to normal
 260 void wxEndBusyCursor()
 261 {
 262     wxCHECK_RET( gs_wxBusyCursorCount > 0,
 263         wxT("no matching wxBeginBusyCursor() for wxEndBusyCursor()") );
 264
 265     if (--gs_wxBusyCursorCount == 0)
 266     {
 267         gMacStoredActiveCursor.MacInstall();
 268         gMacStoredActiveCursor = wxNullCursor;
 269
 270         wxSetCursor(wxNullCursor);
 271     }
 272 }
 273
 274 // true if we're between the above two calls
 275 bool wxIsBusy()
 276 {
 277     return (gs_wxBusyCursorCount > 0);
 278 }
 279
 280 wxBitmap wxWindowDCImpl::DoGetAsBitmap(const wxRect *subrect) const
 281 {
 282     // wxScreenDC is derived from wxWindowDC, so a screen dc will
 283     // call this method when a Blit is performed with it as a source.
 284     if (!m_window)
 285         return wxNullBitmap;
 286
 287     wxSize sz = m_window->GetSize();
 288
 289     int left = subrect != NULL ? subrect->x : 0 ;
 290     int top = subrect != NULL ? subrect->y : 0 ;
 291     int width = subrect != NULL ? subrect->width : sz.x;
 292     int height = subrect !=  NULL ? subrect->height : sz.y ;
 293
 294     NSRect rect = NSMakeRect(left, top, width, height );
 295     NSView* view = (NSView*) m_window->GetHandle();
 296     [view lockFocus];
 297     // we use this method as other methods force a repaint, and this method can be
 298     // called from OnPaint, even with the window's paint dc as source (see wxHTMLWindow)
 299     NSBitmapImageRep *rep = [[[NSBitmapImageRep alloc] initWithFocusedViewRect: [view bounds]] retain];
 300     [view unlockFocus];
 301
 302     CGImageRef cgImageRef = (CGImageRef)[rep CGImage];
 303
 304     wxBitmap bitmap(CGImageGetWidth(cgImageRef)  , CGImageGetHeight(cgImageRef) );
 305     CGRect r = CGRectMake( 0 , 0 , CGImageGetWidth(cgImageRef)  , CGImageGetHeight(cgImageRef) );
 306     // since our context is upside down we dont use CGContextDrawImage
 307     wxMacDrawCGImage( (CGContextRef) bitmap.GetHBITMAP() , &r, cgImageRef ) ;
 308     CGImageRelease(cgImageRef);
 309     cgImageRef = NULL;
 310     [rep release];
 311
 312     return bitmap;
 313 }
 314
 315 #endif // wxUSE_GUI
 316
 317 #endif // wxOSX_USE_COCOA