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