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     // ensure that we have an auto release pool in place because the event will
  56     // be autoreleased from NSEvent:otherEventWithType and we might not have a
  57     // global pool during startup or shutdown and we actually never have it if
  58     // we're called from another thread
  59     //
  60     // FIXME: we can't use wxMacAutoreleasePool here because it's in core and
  61     //        we're in base
  62     NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
  63
  64     NSEvent* wakeupEvent = [NSEvent otherEventWithType:NSApplicationDefined
  65                                     location:NSZeroPoint
  66                                     modifierFlags:NSAnyEventMask
  67                                     timestamp:0
  68                                     windowNumber:0
  69                                     context:nil
  70                                     subtype:0
  71                                     data1:0
  72                                     data2:0];
  73     [NSApp postEvent:wakeupEvent atStart:NO];
  74
  75     [pool release];
  76 }
  77
  78 #endif // wxUSE_BASE
  79
  80 #if wxUSE_GUI
  81
  82 @interface wxNSAppController : NSObject
  83 {
  84 }
  85
  86 - (BOOL)applicationShouldTerminateAfterLastWindowClosed:(NSApplication *)sender;
  87 - (BOOL)application:(NSApplication *)sender openFile:(NSString *)filename;
  88 - (BOOL)applicationShouldOpenUntitledFile:(NSApplication *)sender;
  89 - (BOOL)application:(NSApplication *)sender printFile:(NSString *)filename;
  90 - (NSApplicationTerminateReply)applicationShouldTerminate:(NSApplication *)sender;
  91 - (void)handleGetURLEvent:(NSAppleEventDescriptor *)event
  92     withReplyEvent:(NSAppleEventDescriptor *)replyEvent;
  93 @end
  94
  95 @implementation wxNSAppController
  96
  97 - (BOOL)applicationShouldTerminateAfterLastWindowClosed:(NSApplication *)sender
  98 {
  99     wxUnusedVar(sender);
 100     // let wx do this, not cocoa
 101     return NO;
 102 }
 103
 104 - (BOOL)application:(NSApplication *)sender openFile:(NSString *)filename;
 105 {
 106     wxUnusedVar(sender);
 107     wxCFStringRef cf(wxCFRetain(filename));
 108     wxTheApp->MacOpenFile(cf.AsString()) ;
 109     return YES;
 110 }
 111
 112 - (BOOL)applicationShouldOpenUntitledFile:(NSApplication *)sender;
 113 {
 114     wxUnusedVar(sender);
 115     wxTheApp->MacNewFile() ;
 116     return NO;
 117 }
 118
 119 - (BOOL)application:(NSApplication *)sender printFile:(NSString *)filename
 120 {
 121     wxUnusedVar(sender);
 122     wxCFStringRef cf(wxCFRetain(filename));
 123     wxTheApp->MacPrintFile(cf.AsString()) ;
 124     return YES;
 125 }
 126
 127 /*
 128     Allowable return values are:
 129         NSTerminateNow - it is ok to proceed with termination
 130         NSTerminateCancel - the application should not be terminated
 131         NSTerminateLater - it may be ok to proceed with termination later.  The application must call -replyToApplicationShouldTerminate: with YES or NO once the answer is known
 132             this return value is for delegates who need to provide document modal alerts (sheets) in order to decide whether to quit.
 133 */
 134 - (NSApplicationTerminateReply)applicationShouldTerminate:(NSApplication *)sender
 135 {
 136     wxUnusedVar(sender);
 137     wxWindow* win = wxTheApp->GetTopWindow() ;
 138     if ( win )
 139     {
 140         wxCommandEvent exitEvent(wxEVT_COMMAND_MENU_SELECTED, wxApp::s_macExitMenuItemId);
 141         if (!win->GetEventHandler()->ProcessEvent(exitEvent))
 142             win->Close(true) ;
 143     }
 144     else
 145     {
 146          wxTheApp->ExitMainLoop() ;
 147     }
 148     return NSTerminateCancel;
 149 }
 150
 151 - (BOOL)applicationShouldHandleReopen:(NSApplication *)sender hasVisibleWindows:(BOOL)flag
 152 {
 153     wxUnusedVar(flag);
 154     wxUnusedVar(sender);
 155     wxTheApp->MacReopenApp() ;
 156     return NO;
 157 }
 158
 159 - (void)handleGetURLEvent:(NSAppleEventDescriptor *)event
 160     withReplyEvent:(NSAppleEventDescriptor *)replyEvent
 161 {
 162     wxUnusedVar(replyEvent);
 163     NSString* url = [[event descriptorAtIndex:1] stringValue];
 164     wxCFStringRef cf(wxCFRetain(url));
 165     wxTheApp->MacOpenURL(cf.AsString()) ;
 166 }
 167 @end
 168
 169 /*
 170     allows ShowModal to work when using sheets.
 171     see include/wx/osx/cocoa/private.h for more info
 172 */
 173 @implementation ModalDialogDelegate
 174 - (id)init
 175 {
 176     [super init];
 177     sheetFinished = NO;
 178     resultCode = -1;
 179     return self;
 180 }
 181
 182 - (BOOL)finished
 183 {
 184     return sheetFinished;
 185 }
 186
 187 - (int)code
 188 {
 189     return resultCode;
 190 }
 191
 192 - (void)waitForSheetToFinish
 193 {
 194     while (!sheetFinished)
 195     {
 196         wxSafeYield();
 197     }
 198 }
 199
 200 - (void)sheetDidEnd:(NSWindow *)sheet returnCode:(int)returnCode contextInfo:(void *)contextInfo
 201 {
 202     wxUnusedVar(contextInfo);
 203     resultCode = returnCode;
 204     sheetFinished = YES;
 205     // NSAlerts don't need nor respond to orderOut
 206     if ([sheet respondsToSelector:@selector(orderOut:)])
 207         [sheet orderOut: self];
 208 }
 209 @end
 210
 211 bool wxApp::DoInitGui()
 212 {
 213     wxMacAutoreleasePool pool;
 214     [NSApplication sharedApplication];
 215
 216     if (!sm_isEmbedded)
 217     {
 218         wxNSAppController* controller = [[wxNSAppController alloc] init];
 219         [[NSApplication sharedApplication] setDelegate:controller];
 220
 221         NSAppleEventManager *appleEventManager = [NSAppleEventManager sharedAppleEventManager];
 222         [appleEventManager setEventHandler:controller andSelector:@selector(handleGetURLEvent:withReplyEvent:)
 223             forEventClass:kInternetEventClass andEventID:kAEGetURL];
 224         [NSApp finishLaunching];
 225     }
 226     return true;
 227 }
 228
 229 void wxApp::DoCleanUp()
 230 {
 231 }
 232
 233 void wxClientDisplayRect(int *x, int *y, int *width, int *height)
 234 {
 235     NSRect displayRect = [[NSScreen mainScreen] visibleFrame];
 236     wxRect r = wxFromNSRect( NULL, displayRect );
 237     if ( x )
 238         *x = r.x;
 239     if ( y )
 240         *y = r.y;
 241     if ( width )
 242         *width = r.GetWidth();
 243     if ( height )
 244         *height = r.GetHeight();
 245
 246 }
 247
 248 void wxGetMousePosition( int* x, int* y )
 249 {
 250     wxPoint pt = wxFromNSPoint(NULL, [NSEvent mouseLocation]);
 251     if ( x )
 252         *x = pt.x;
 253     if ( y )
 254         *y = pt.y;
 255 };
 256
 257 wxTimerImpl* wxGUIAppTraits::CreateTimerImpl(wxTimer *timer)
 258 {
 259     return new wxOSXTimerImpl(timer);
 260 }
 261
 262 int gs_wxBusyCursorCount = 0;
 263 extern wxCursor    gMacCurrentCursor;
 264 wxCursor        gMacStoredActiveCursor;
 265
 266 // Set the cursor to the busy cursor for all windows
 267 void wxBeginBusyCursor(const wxCursor *cursor)
 268 {
 269     if (gs_wxBusyCursorCount++ == 0)
 270     {
 271         gMacStoredActiveCursor = gMacCurrentCursor;
 272         cursor->MacInstall();
 273
 274         wxSetCursor(*cursor);
 275     }
 276     //else: nothing to do, already set
 277 }
 278
 279 // Restore cursor to normal
 280 void wxEndBusyCursor()
 281 {
 282     wxCHECK_RET( gs_wxBusyCursorCount > 0,
 283         wxT("no matching wxBeginBusyCursor() for wxEndBusyCursor()") );
 284
 285     if (--gs_wxBusyCursorCount == 0)
 286     {
 287         gMacStoredActiveCursor.MacInstall();
 288         gMacStoredActiveCursor = wxNullCursor;
 289
 290         wxSetCursor(wxNullCursor);
 291     }
 292 }
 293
 294 // true if we're between the above two calls
 295 bool wxIsBusy()
 296 {
 297     return (gs_wxBusyCursorCount > 0);
 298 }
 299
 300 wxBitmap wxWindowDCImpl::DoGetAsBitmap(const wxRect *subrect) const
 301 {
 302     // wxScreenDC is derived from wxWindowDC, so a screen dc will
 303     // call this method when a Blit is performed with it as a source.
 304     if (!m_window)
 305         return wxNullBitmap;
 306
 307     wxSize sz = m_window->GetSize();
 308
 309     int left = subrect != NULL ? subrect->x : 0 ;
 310     int top = subrect != NULL ? subrect->y : 0 ;
 311     int width = subrect != NULL ? subrect->width : sz.x;
 312     int height = subrect !=  NULL ? subrect->height : sz.y ;
 313
 314     NSRect rect = NSMakeRect(left, top, width, height );
 315     NSView* view = (NSView*) m_window->GetHandle();
 316     [view lockFocus];
 317     // we use this method as other methods force a repaint, and this method can be
 318     // called from OnPaint, even with the window's paint dc as source (see wxHTMLWindow)
 319     NSBitmapImageRep *rep = [[[NSBitmapImageRep alloc] initWithFocusedViewRect: [view bounds]] retain];
 320     [view unlockFocus];
 321
 322     wxBitmap bitmap(width, height);
 323     if ( [rep respondsToSelector:@selector(CGImage)] )
 324     {
 325         CGImageRef cgImageRef = (CGImageRef)[rep CGImage];
 326
 327         CGRect r = CGRectMake( 0 , 0 , CGImageGetWidth(cgImageRef)  , CGImageGetHeight(cgImageRef) );
 328         // since our context is upside down we dont use CGContextDrawImage
 329         wxMacDrawCGImage( (CGContextRef) bitmap.GetHBITMAP() , &r, cgImageRef ) ;
 330         CGImageRelease(cgImageRef);
 331         cgImageRef = NULL;
 332     }
 333     else
 334     {
 335         // TODO for 10.4 in case we can support this for osx_cocoa
 336     }
 337     [rep release];
 338
 339     return bitmap;
 340 }
 341
 342 #endif // wxUSE_GUI
 343
 344 #endif // wxOSX_USE_COCOA