[#1577388] - fix for scaling in wxImage.

[wxWidgets.git] / src / cocoa / bitmap.mm

diff --git a/src/cocoa/bitmap.mm b/src/cocoa/bitmap.mm
index 4d5a1b05ccc94b0c8dc961365bfca49a09e49b28..452a92cbeedf9564a0464c5f915f4fef049794ed 100644 (file)
--- a/src/cocoa/bitmap.mm
+++ b/src/cocoa/bitmap.mm
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        src/cocoa/bitmap.cpp
+// Name:        src/cocoa/bitmap.mm
 // Purpose:     wxBitmap
 // Author:      David Elliott
 // Modified by:
@@ -10,15 +10,18 @@
 /////////////////////////////////////////////////////////////////////////////
 
 #include "wx/wxprec.h"
+
+#include "wx/bitmap.h"
+
 #ifndef WX_PRECOMP
     #include "wx/log.h"
     #include "wx/utils.h"
     #include "wx/palette.h"
     #include "wx/icon.h"
     #include "wx/colour.h"
+    #include "wx/image.h"
 #endif //WX_PRECOMP
-#include "wx/bitmap.h"
-#include "wx/image.h"
+
 #include "wx/xpmdecod.h"
 #include "wx/rawbmp.h"
 
@@ -28,6 +31,9 @@
 #import <AppKit/NSBitmapImageRep.h>
 #import <AppKit/NSGraphics.h>
 #import <AppKit/NSImage.h>
+#import <AppKit/NSColor.h>
+
+IMPLEMENT_ABSTRACT_CLASS(wxBitmapHandler, wxBitmapHandlerBase)
 
 // ========================================================================
 // wxBitmapRefData
@@ -119,7 +125,7 @@ wxBitmap::wxBitmap(int w, int h, int d)
     (void)Create(w, h, d);
 }
 
-wxBitmap::wxBitmap(void *data, wxBitmapType type, int width, int height, int depth)
+wxBitmap::wxBitmap(const void* data, wxBitmapType type, int width, int height, int depth)
 {
     (void) Create(data, type, width, height, depth);
 }
@@ -238,7 +244,7 @@ void wxBitmap::SetMask(wxMask *mask)
     M_BITMAPDATA->m_bitmapMask = mask ;
 }
 
-bool wxBitmap::Ok() const
+bool wxBitmap::IsOk() const
 {
     return m_refData && M_BITMAPDATA->m_ok;
 }
@@ -298,7 +304,8 @@ bool wxBitmap::Create(int w, int h, int d)
             hasAlpha: NO
             isPlanar: NO
             colorSpaceName: NSCalibratedRGBColorSpace
-            bytesPerRow: 0
+            bytesPerRow: 0  // NOTE: Contrary to Apple documentation Mac OS
+                            // 10.4 will add padding bytes when 0 is used here
             bitsPerPixel: 0];
 
     wxLogTrace(wxTRACE_COCOA,wxT("M_BITMAPDATA=%p NSBitmapImageRep bitmapData=%p"), M_BITMAPDATA, [M_BITMAPDATA->m_cocoaNSBitmapImageRep bitmapData]);
@@ -341,7 +348,7 @@ bool wxBitmap::LoadFile(const wxString& filename, wxBitmapType type)
     return true;
 }
 
-bool wxBitmap::Create(void *data, wxBitmapType type, int width, int height, int depth)
+bool wxBitmap::Create(const void* data, wxBitmapType type, int width, int height, int depth)
 {
     UnRef();
 
@@ -386,27 +393,26 @@ wxBitmap wxBitmap::GetSubBitmap(wxRect const&) const
 
 wxImage wxBitmap::ConvertToImage() const
 {
+    wxAutoNSAutoreleasePool pool;
     if(!Ok())
         return /*wxImage(5,5)*/wxNullImage;
-    return wxImage(M_BITMAPDATA->m_width,M_BITMAPDATA->m_height);
-}
-
-bool wxBitmap::CreateFromXpm(const char **xpm)
-{
-#if wxUSE_IMAGE && wxUSE_XPM
-    UnRef();
-
-    wxCHECK_MSG( xpm, false, wxT("invalid XPM data") )
-
-    wxXPMDecoder decoder;
-    wxImage img = decoder.ReadData(xpm);
-    wxCHECK_MSG( img.Ok(), false, wxT("invalid XPM data") )
-
-    *this = wxBitmap(img);
-    return true;
-#else
-    return false;
-#endif
+    NSImage *nsimage = GetNSImage(false /* don't use mask */);
+    wxImage newImage(M_BITMAPDATA->m_width,M_BITMAPDATA->m_height);
+    [nsimage lockFocus];
+    for(int i=0; i < M_BITMAPDATA->m_width; i++)
+    {
+        // Don't let the pool get too big as you'll notice we're creating
+        // two autoreleased NSColor objects with every iteration.
+        wxAutoNSAutoreleasePool loopPool;
+        for(int j=0; j < M_BITMAPDATA->m_height; j++)
+        {
+            NSColor *pixelColor = NSReadPixel(NSMakePoint(i,M_BITMAPDATA->m_height - j - 1));
+            NSColor *color = [pixelColor colorUsingColorSpaceName:NSCalibratedRGBColorSpace];
+            newImage.SetRGB(i,j,int([color redComponent]*255.0), int([color greenComponent]*255.0), int([color blueComponent]*255.0));
+        }
+    }
+    [nsimage unlockFocus];
+    return newImage;
 }
 
 bool wxBitmap::CreateFromImage(const wxImage& image, int depth)
@@ -429,9 +435,11 @@ bool wxBitmap::CreateFromImage(const wxImage& image, int depth)
             hasAlpha: NO
             isPlanar: NO
             colorSpaceName: NSCalibratedRGBColorSpace
-            bytesPerRow: 0
+            bytesPerRow: image.GetWidth()*3
             bitsPerPixel: 0];
 
+    // TODO: Specify bytesPerRow:0 and then use [bitmapImage bytesPerRow]
+    // so that the rows are aligned suitably for altivec by the OS (Tiger)
     const int numBytes = image.GetWidth()*image.GetHeight()*3;
     memcpy([bitmapImage bitmapData], image.GetData(), numBytes);
     // TODO: Alpha and convert to desired depth
@@ -645,4 +653,3 @@ bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour)
     m_cocoaNSBitmapImageRep = [maskRep retain];
     return true;
 }
-