support for iPhone callbacks

[wxWidgets.git] / src / osx / carbon / utilscocoa.mm

diff --git a/src/osx/carbon/utilscocoa.mm b/src/osx/carbon/utilscocoa.mm
index 88db0671143679db07df1b317b2890e75eac4c58..58ec857b1a681ef474bc80bb0c47b554b6cc550e 100644 (file)
--- a/src/osx/carbon/utilscocoa.mm
+++ b/src/osx/carbon/utilscocoa.mm
@@ -1,16 +1,20 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        src/osx/carbon/utils.mm
+// Name:        src/osx/carbon/utilscocoa.mm
 // Purpose:     various cocoa mixin utility functions
 // Author:      Stefan Csomor
 // Modified by:
 // Created:     1998-01-01
-// RCS-ID:      $Id: utilscocoa.mm 48805 2007-09-19 14:52:25Z SC $
+// RCS-ID:      $Id$
 // Copyright:   (c) Stefan Csomor
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 #include "wx/wxprec.h"
 
+#ifndef WX_PRECOMP
+#include "wx/object.h"
+#endif
+
 #if wxOSX_USE_COCOA_OR_CARBON
 #include <Cocoa/Cocoa.h>
 #else
@@ -189,7 +193,7 @@ WX_NSFont wxFont::OSXCreateNSFont(wxOSXSystemFont font, wxNativeFontInfo* info)
 }
 
 static inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }
-static const NSAffineTransformStruct kSlantNSTransformStruct = { 1, 0, tan(DegToRad(11)), 1, 0, 0  };
+static const NSAffineTransformStruct kSlantNSTransformStruct = { 1, 0, static_cast<CGFloat>(tan(DegToRad(11))), 1, 0, 0  };
 
 WX_NSFont wxFont::OSXCreateNSFont(const wxNativeFontInfo* info)
 {
@@ -339,6 +343,19 @@ WX_UIFont wxFont::OSXCreateUIFont(const wxNativeFontInfo* info)
     return uiFont;
 }
 
+#endif
+
+// ----------------------------------------------------------------------------
+// NSWindow Utils
+// ----------------------------------------------------------------------------
+
+#if wxOSX_USE_COCOA
+
+WXWindow wxOSXGetMainWindow()
+{
+    return [NSApp mainWindow];
+}
+
 #endif
 // ----------------------------------------------------------------------------
 // NSImage Utils
@@ -364,6 +381,33 @@ wxBitmap wxOSXCreateSystemBitmap(const wxString& name, const wxString &client, c
 #endif
 }
 
+double wxOSXGetMainScreenContentScaleFactor()
+{
+    double scale;
+  
+#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 40000
+    if ([[UIScreen mainScreen] respondsToSelector:@selector(scale)])
+    {
+        scale=[[UIScreen mainScreen] scale];
+    }
+    else
+#endif
+    {
+        scale=1.0;
+    }
+    
+    return scale;
+}
+
+#endif
+
+#if wxOSX_USE_CARBON
+
+double wxOSXGetMainScreenContentScaleFactor()
+{
+    return 1.0;
+}
+
 #endif
 
 #if wxOSX_USE_COCOA
@@ -371,18 +415,17 @@ wxBitmap wxOSXCreateSystemBitmap(const wxString& name, const wxString &client, c
 wxBitmap wxOSXCreateSystemBitmap(const wxString& name, const wxString &WXUNUSED(client), const wxSize& WXUNUSED(size))
 {
     wxCFStringRef cfname(name);
-    wxCFRef<CGImageRef> image( wxOSXCreateCGImageFromNSImage([NSImage imageNamed:cfname.AsNSString()]) );
-    return wxBitmap( image );
+    return wxBitmap( [NSImage imageNamed:cfname.AsNSString()] );
 }
 
 //  From "Cocoa Drawing Guide:Working with Images"
-WX_NSImage  wxOSXGetNSImageFromCGImage( CGImageRef image )
+WX_NSImage  wxOSXGetNSImageFromCGImage( CGImageRef image, double scaleFactor )
 {
     NSRect      imageRect    = NSMakeRect(0.0, 0.0, 0.0, 0.0);
 
     // Get the image dimensions.
-    imageRect.size.height = CGImageGetHeight(image);
-    imageRect.size.width = CGImageGetWidth(image);
+    imageRect.size.height = CGImageGetHeight(image)/scaleFactor;
+    imageRect.size.width = CGImageGetWidth(image)/scaleFactor;
 
     // Create a new image to receive the Quartz image data.
     NSImage  *newImage = [[NSImage alloc] initWithSize:imageRect.size];
@@ -405,23 +448,57 @@ WX_NSImage  wxOSXGetNSImageFromCGImage( CGImageRef image )
     return( newImage );
 }
 
-CGImageRef wxOSXCreateCGImageFromNSImage( WX_NSImage nsimage )
+CGContextRef WXDLLIMPEXP_CORE wxOSXCreateBitmapContextFromNSImage( WX_NSImage nsimage)
 {
     // based on http://www.mail-archive.com/cocoa-dev@lists.apple.com/msg18065.html
-
-    CGImageRef image = NULL;
+    
+    CGContextRef hbitmap = NULL;
     if (nsimage != nil)
     {
+        double scale = wxOSXGetMainScreenContentScaleFactor();
+        
         NSSize imageSize = [nsimage size];
-        CGColorSpaceRef genericRGB = CGColorSpaceCreateWithName(kCGColorSpaceGenericRGB); 
-        CGContextRef context = CGBitmapContextCreate(NULL, imageSize.width, imageSize.height, 8, 0, genericRGB, kCGImageAlphaPremultipliedFirst); 
-        NSGraphicsContext *nsGraphicsContext = [NSGraphicsContext graphicsContextWithGraphicsPort:context flipped:NO];
+        
+        hbitmap = CGBitmapContextCreate(NULL, imageSize.width*scale, imageSize.height*scale, 8, 0, wxMacGetGenericRGBColorSpace(), kCGImageAlphaPremultipliedFirst);
+        CGContextScaleCTM( hbitmap, scale, scale );
+    
+        NSGraphicsContext *nsGraphicsContext = [NSGraphicsContext graphicsContextWithGraphicsPort:hbitmap flipped:NO];
         [NSGraphicsContext saveGraphicsState];
         [NSGraphicsContext setCurrentContext:nsGraphicsContext];
         [[NSColor whiteColor] setFill];
         NSRectFill(NSMakeRect(0.0, 0.0, imageSize.width, imageSize.height));
         [nsimage drawAtPoint:NSZeroPoint fromRect:NSZeroRect operation:NSCompositeCopy fraction:1.0];
         [NSGraphicsContext setCurrentContext:nsGraphicsContext];
+    }
+    return hbitmap;
+}
+
+double wxOSXGetMainScreenContentScaleFactor()
+{
+#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_7)
+    if ( [ [NSScreen mainScreen] respondsToSelector:@selector(backingScaleFactor)] )
+        return [[NSScreen mainScreen] backingScaleFactor];
+    else
+#endif
+        return 1.0;
+}
+
+CGImageRef wxOSXCreateCGImageFromNSImage( WX_NSImage nsimage, double *scaleptr )
+{
+    // based on http://www.mail-archive.com/cocoa-dev@lists.apple.com/msg18065.html
+
+    CGImageRef image = NULL;
+    if (nsimage != nil)
+    {        
+        CGContextRef context = wxOSXCreateBitmapContextFromNSImage(nsimage);
+        if ( scaleptr )
+        {
+            // determine content scale
+            CGRect userrect = CGRectMake(0, 0, 10, 10);
+            CGRect devicerect;
+            devicerect = CGContextConvertRectToDeviceSpace(context, userrect);
+            *scaleptr = devicerect.size.height / userrect.size.height;
+        }
         image = CGBitmapContextCreateImage(context);
         CFRelease(context);
     }