X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/238ba802f1a9f79cde6e3ebd44e5c4ab78af2055..f7a50432401c62a3300b0b9faa7e99d7ffe3d4e8:/wxPython/src/_bitmap.i

diff --git a/wxPython/src/_bitmap.i b/wxPython/src/_bitmap.i
index 8aa329e133..1316e7cd35 100644
--- a/wxPython/src/_bitmap.i
+++ b/wxPython/src/_bitmap.i
@@ -16,8 +16,29 @@
 #include <wx/rawbmp.h>
 %}
 
+
+// Turn off the aquisition of the Global Interpreter Lock for the classes and
+// functions in this file
+%threadWrapperOff
+
 //---------------------------------------------------------------------------
 
+%{
+// See http://tinyurl.com/e5adr for what premultiplying alpha means.  It
+// appears to me that the other platforms are already doing it, so I'll just
+// automatically do it for wxMSW here.
+#ifdef __WXMSW__
+#define wxPy_premultiply(p, a)   ((p) * (a) / 0xff)
+#define wxPy_unpremultiply(p, a) ((a) ? ((p) * 0xff / (a)) : (p))    
+#else
+#define wxPy_premultiply(p, a)   (p)
+#define wxPy_unpremultiply(p, a) (p)    
+#endif
+%}
+
+//---------------------------------------------------------------------------
+
+
 %{
 #include <wx/image.h>
     
@@ -104,8 +125,8 @@ public:
         * wx.BITMAP_TYPE_IFF
 
 :see: Alternate constructors `wx.EmptyBitmap`, `wx.BitmapFromIcon`,
-      `wx.BitmapFromImage`, `wx.BitmapFromXPMData`,
-      `wx.BitmapFromBits`
+      `wx.BitmapFromImage`, `wx.BitmapFromXPMData`, `wx.BitmapFromBits`,
+      `wx.BitmapFromBuffer`, `wx.BitmapFromBufferRGBA`,
 ");
         
     ~wxBitmap();
@@ -174,8 +195,9 @@ bit depths, the behaviour is platform dependent.", "",
     }
 #endif
 
-    bool Ok();
-    
+    bool IsOk();
+    %pythoncode { Ok = IsOk }
+
     DocDeclStr(
         int , GetWidth(),
         "Gets the width of the bitmap in pixels.", "");
@@ -209,7 +231,6 @@ bitmap. This preserves mask information so that bitmaps and images can
 be converted back and forth without loss in that respect.", "");
     
 
-    
     DocDeclStr(
         virtual wxMask* , GetMask() const,
         "Gets the associated mask (if any) which may have been loaded from a
@@ -293,22 +314,97 @@ the ``type`` parameter.", "");
     
 #ifdef __WXMSW__
     bool CopyFromCursor(const wxCursor& cursor);
-
-// WXWIN_COMPATIBILITY_2_4
-  #if 0
-    int GetQuality();
-    void SetQuality(int q);
-    %pythoncode { GetQuality = wx._deprecated(GetQuality) }
-    %pythoncode { SetQuality = wx._deprecated(SetQuality) }
-  #endif
 #endif
 
-    %pythoncode { def __nonzero__(self): return self.Ok() }
+    %extend {
+        DocStr(CopyFromBuffer,
+               "Copy data from a RGB buffer object to replace the bitmap pixel data.
+See `wxBitmapFromBuffer` for more details.", "");
+        void CopyFromBuffer(buffer data, int DATASIZE)
+        {
+            int height=self->GetHeight();
+            int width=self->GetWidth();
+
+            if (DATASIZE != width * height * 3) {
+                wxPyErr_SetString(PyExc_ValueError, "Invalid data buffer size.");
+            }
+            wxNativePixelData pixData(*self, wxPoint(0,0), wxSize(width, height));
+            if (! pixData) {
+                // raise an exception...
+                wxPyErr_SetString(PyExc_RuntimeError,
+                                  "Failed to gain raw access to bitmap data.");
+                return;
+            }
+
+            wxNativePixelData::Iterator p(pixData);
+            for (int y=0; y<height; y++) {
+                wxNativePixelData::Iterator rowStart = p;
+                for (int x=0; x<width; x++) {
+                    p.Red()   = *(data++);
+                    p.Green() = *(data++);
+                    p.Blue()  = *(data++);
+                    ++p;
+                }
+                p = rowStart;
+                p.OffsetY(pixData, 1);
+            }
+        }
+
+        DocStr(CopyFromBufferRGBA,
+               "Copy data from a RGBA buffer object to replace the bitmap pixel data.
+See `wxBitmapFromBufferRGBA` for more details.", "");
+        void CopyFromBufferRGBA(buffer data, int DATASIZE)
+        {
+            int height=self->GetHeight();
+            int width=self->GetWidth();
+            
+            if (DATASIZE != width * height * 4) {
+                wxPyErr_SetString(PyExc_ValueError, "Invalid data buffer size.");
+            }
+            wxAlphaPixelData pixData(*self, wxPoint(0,0), wxSize(width, height));
+            if (! pixData) {
+                // raise an exception...
+                wxPyErr_SetString(PyExc_RuntimeError,
+                                  "Failed to gain raw access to bitmap data.");
+                return;
+            }
 
+            pixData.UseAlpha();
+            wxAlphaPixelData::Iterator p(pixData);
+            for (int y=0; y<height; y++) {
+                wxAlphaPixelData::Iterator rowStart = p;
+                for (int x=0; x<width; x++) {
+                    byte a = data[3];
+                    p.Red()   = wxPy_premultiply(*(data++), a);
+                    p.Green() = wxPy_premultiply(*(data++), a);
+                    p.Blue()  = wxPy_premultiply(*(data++), a);
+                    p.Alpha() = a; data++;
+                    ++p;
+                }
+                p = rowStart;
+                p.OffsetY(pixData, 1);
+            }
+        }        
+    }
+
+    
+    %pythoncode { def __nonzero__(self): return self.IsOk() }
+
+    // TODO: Should these just be removed since the C++ operators are
+    // gone?  Or is using IsSameAs for wxPython ok?    
     %extend {
-        bool __eq__(const wxBitmap* other) { return other ? (*self == *other) : false; }
-        bool __ne__(const wxBitmap* other) { return other ? (*self != *other) : true;  }
+        bool __eq__(const wxBitmap* other) { return other ? self->IsSameAs(*other) : false; }
+        bool __ne__(const wxBitmap* other) { return other ? !self->IsSameAs(*other) : true;  }
     }
+
+    %property(Depth, GetDepth, SetDepth, doc="See `GetDepth` and `SetDepth`");
+    %property(Height, GetHeight, SetHeight, doc="See `GetHeight` and `SetHeight`");
+    %property(Mask, GetMask, SetMask, doc="See `GetMask` and `SetMask`");
+    %property(Palette, GetPalette, doc="See `GetPalette`");
+    %property(Size, GetSize, SetSize, doc="See `GetSize` and `SetSize`");
+    %property(SubBitmap, GetSubBitmap, doc="See `GetSubBitmap`");
+    %property(Width, GetWidth, SetWidth, doc="See `GetWidth` and `SetWidth`");
+
 };
 
 
@@ -317,6 +413,7 @@ the ``type`` parameter.", "");
 // use the Abstract Pixel API to be able to set RGB and A bytes directly into
 // the wxBitmap's pixel buffer.
 
+
 %newobject _BitmapFromBufferAlpha;
 %newobject _BitmapFromBuffer;
 %inline %{
@@ -335,27 +432,28 @@ the ``type`` parameter.", "");
         }
 
         wxBitmap* bmp = new wxBitmap(width, height, 32);
-        wxAlphaPixelData pixels(*bmp, wxPoint(0,0), wxSize(width,height));
-        if (! pixels) {
+        wxAlphaPixelData pixData(*bmp, wxPoint(0,0), wxSize(width,height));
+        if (! pixData) {
             // raise an exception...
             wxPyErr_SetString(PyExc_RuntimeError,
                               "Failed to gain raw access to bitmap data.");
             return NULL;
         }
                 
-        pixels.UseAlpha();
-        wxAlphaPixelData::Iterator p(pixels);
+        pixData.UseAlpha();
+        wxAlphaPixelData::Iterator p(pixData);
         for (int y=0; y<height; y++) {
             wxAlphaPixelData::Iterator rowStart = p;
             for (int x=0; x<width; x++) {
-                p.Red()   = *(data++);
-                p.Green() = *(data++);
-                p.Blue()  = *(data++);
-                p.Alpha() = *(alpha++);
+                byte a = *(alpha++);
+                p.Red()   = wxPy_premultiply(*(data++), a);
+                p.Green() = wxPy_premultiply(*(data++), a);
+                p.Blue()  = wxPy_premultiply(*(data++), a);
+                p.Alpha() = a;
                 ++p; 
             }
             p = rowStart;
-            p.OffsetY(pixels, 1);
+            p.OffsetY(pixData, 1);
         }
         return bmp;
     }        
@@ -368,15 +466,15 @@ the ``type`` parameter.", "");
         }
 
         wxBitmap* bmp = new wxBitmap(width, height, 24);
-        wxNativePixelData pixels(*bmp, wxPoint(0,0), wxSize(width,height));
-        if (! pixels) {
+        wxNativePixelData pixData(*bmp, wxPoint(0,0), wxSize(width,height));
+        if (! pixData) {
             // raise an exception...
             wxPyErr_SetString(PyExc_RuntimeError,
                               "Failed to gain raw access to bitmap data.");
             return NULL;
         }
                 
-        wxNativePixelData::Iterator p(pixels);
+        wxNativePixelData::Iterator p(pixData);
         for (int y=0; y<height; y++) {
             wxNativePixelData::Iterator rowStart = p;
             for (int x=0; x<width; x++) {
@@ -386,7 +484,7 @@ the ``type`` parameter.", "");
                 ++p; 
             }
             p = rowStart;
-            p.OffsetY(pixels, 1);
+            p.OffsetY(pixData, 1);
         }
         return bmp;
     }
@@ -397,27 +495,26 @@ the ``type`` parameter.", "");
 def BitmapFromBuffer(width, height, dataBuffer, alphaBuffer=None):
     """
     Creates a `wx.Bitmap` from the data in dataBuffer.  The dataBuffer
-    parameter must be a Python object that implements the buffer interface, or
-    is convertable to a buffer object, such as a string, array, etc.  The
-    dataBuffer object is expected to contain a series of RGB bytes and be
-    width*height*3 bytes long.  A buffer object can optionally be supplied for
-    the image's alpha channel data, and it is expected to be width*height
-    bytes long.
-
-    Unlike `wx.ImageFromBuffer` the bitmap created with this function does not
-    share the memory buffer with the buffer object.  This is because the
-    native pixel buffer format varies on different platforms, and so instead
-    an efficient as possible copy of the data is made from the buffer objects
-    to the bitmap's native pixel buffer.  For direct access to a bitmap's
-    pixel buffer see `wx.NativePixelData` and `wx.AlphaPixelData`.
+    parameter must be a Python object that implements the buffer
+    interface, such as a string, array, etc.  The dataBuffer object is
+    expected to contain a series of RGB bytes and be width*height*3
+    bytes long.  A buffer object can optionally be supplied for the
+    image's alpha channel data, and it is expected to be width*height
+    bytes long.  On Windows the RGB values are 'premultiplied' by the
+    alpha values.  (The other platforms do the multiplication
+    themselves.)
+
+    Unlike `wx.ImageFromBuffer` the bitmap created with this function
+    does not share the memory buffer with the buffer object.  This is
+    because the native pixel buffer format varies on different
+    platforms, and so instead an efficient as possible copy of the
+    data is made from the buffer objects to the bitmap's native pixel
+    buffer.  For direct access to a bitmap's pixel buffer see
+    `wx.NativePixelData` and `wx.AlphaPixelData`.
 
     :see: `wx.Bitmap`, `wx.BitmapFromBufferRGBA`, `wx.NativePixelData`,
           `wx.AlphaPixelData`, `wx.ImageFromBuffer`
     """
-    if not isinstance(dataBuffer, buffer):
-        dataBuffer = buffer(dataBuffer)
-    if alphaBuffer is not None and not isinstance(alphaBuffer, buffer):
-        alphaBuffer = buffer(alphaBuffer)
     if alphaBuffer is not None:
         return _gdi_._BitmapFromBufferAlpha(width, height, dataBuffer, alphaBuffer)
     else:
@@ -428,7 +525,7 @@ def BitmapFromBuffer(width, height, dataBuffer, alphaBuffer=None):
 
 %newobject _BitmapFromBufferRGBA;
 %inline %{
-    wxBitmap* _BitmapFromBufferRGBA(int width, int height, buffer data, int DATASIZE)                                   
+    wxBitmap* _BitmapFromBufferRGBA(int width, int height, buffer data, int DATASIZE)
     {
         if (DATASIZE != width*height*4) {
             wxPyErr_SetString(PyExc_ValueError, "Invalid data buffer size.");
@@ -436,27 +533,28 @@ def BitmapFromBuffer(width, height, dataBuffer, alphaBuffer=None):
         }
 
         wxBitmap* bmp = new wxBitmap(width, height, 32);
-        wxAlphaPixelData pixels(*bmp, wxPoint(0,0), wxSize(width,height));
-        if (! pixels) {
+        wxAlphaPixelData pixData(*bmp, wxPoint(0,0), wxSize(width,height));
+        if (! pixData) {
             // raise an exception...
             wxPyErr_SetString(PyExc_RuntimeError,
                               "Failed to gain raw access to bitmap data.");
             return NULL;
         }
-                
-        pixels.UseAlpha();
-        wxAlphaPixelData::Iterator p(pixels);
+               
+        pixData.UseAlpha();
+        wxAlphaPixelData::Iterator p(pixData);
         for (int y=0; y<height; y++) {
             wxAlphaPixelData::Iterator rowStart = p;
             for (int x=0; x<width; x++) {
-                p.Red()   = *(data++);
-                p.Green() = *(data++);
-                p.Blue()  = *(data++);
-                p.Alpha() = *(data++);
+                byte a = data[3];
+                p.Red()   = wxPy_premultiply(*(data++), a);
+                p.Green() = wxPy_premultiply(*(data++), a);
+                p.Blue()  = wxPy_premultiply(*(data++), a);
+                p.Alpha() = a; data++;
                 ++p; 
             }
             p = rowStart;
-            p.OffsetY(pixels, 1);
+            p.OffsetY(pixData, 1);
         }
         return bmp;
     }        
@@ -466,27 +564,229 @@ def BitmapFromBuffer(width, height, dataBuffer, alphaBuffer=None):
 def BitmapFromBufferRGBA(width, height, dataBuffer):
     """
     Creates a `wx.Bitmap` from the data in dataBuffer.  The dataBuffer
-    parameter must be a Python object that implements the buffer interface, or
-    is convertable to a buffer object, such as a string, array, etc.  The
-    dataBuffer object is expected to contain a series of RGBA bytes (red,
-    gree, blue and alpha) and be width*height*4 bytes long.  
-
-    Unlike `wx.ImageFromBuffer` the bitmap created with this function does not
-    share the memory buffer with the buffer object.  This is because the
-    native pixel buffer format varies on different platforms, and so instead
-    an efficient as possible copy of the data is made from the buffer object
-    to the bitmap's native pixel buffer.  For direct access to a bitmap's
-    pixel buffer see `wx.NativePixelData` and `wx.AlphaPixelData`.
+    parameter must be a Python object that implements the buffer
+    interface, such as a string, array, etc.  The dataBuffer object is
+    expected to contain a series of RGBA bytes (red, green, blue and
+    alpha) and be width*height*4 bytes long.  On Windows the RGB
+    values are 'premultiplied' by the alpha values.  (The other
+    platforms do the multiplication themselves.)
+
+    Unlike `wx.ImageFromBuffer` the bitmap created with this function
+    does not share the memory buffer with the buffer object.  This is
+    because the native pixel buffer format varies on different
+    platforms, and so instead an efficient as possible copy of the
+    data is made from the buffer object to the bitmap's native pixel
+    buffer.  For direct access to a bitmap's pixel buffer see
+    `wx.NativePixelData` and `wx.AlphaPixelData`.
 
     :see: `wx.Bitmap`, `wx.BitmapFromBuffer`, `wx.NativePixelData`,
           `wx.AlphaPixelData`, `wx.ImageFromBuffer`
     """
-    if not isinstance(dataBuffer, buffer):
-        dataBuffer = buffer(dataBuffer)
     return _gdi_._BitmapFromBufferRGBA(width, height, dataBuffer)
 }
 
 
+//---------------------------------------------------------------------------
+
+class wxPixelDataBase
+{
+public:
+    // origin of the rectangular region we represent
+    wxPoint GetOrigin() const { return m_ptOrigin; }
+
+    // width and height of the region we represent
+    int GetWidth() const { return m_width; }
+    int GetHeight() const { return m_height; }
+
+    wxSize GetSize() const { return wxSize(m_width, m_height); }
+
+    // the distance between two rows
+    int GetRowStride() const { return m_stride; }
+
+    %property(Height, GetHeight, doc="See `GetHeight`");
+    %property(Origin, GetOrigin, doc="See `GetOrigin`");
+    %property(RowStride, GetRowStride, doc="See `GetRowStride`");
+    %property(Size, GetSize, doc="See `GetSize`");
+    %property(Width, GetWidth, doc="See `GetWidth`");
+};
+
+
+// Both wxNativePixelData and wxAlphaPixelData have the same interface, so
+// make a macro to declare them both.
+
+%define PIXELDATA(PixelData)
+%{
+    typedef PixelData##::Iterator PixelData##_Accessor;
+%}
+class PixelData##_Accessor;
+class PixelData : public wxPixelDataBase
+{
+public:
+    %nokwargs PixelData;
+    
+    PixelData(wxBitmap& bmp);
+    PixelData(wxBitmap& bmp, const wxRect& rect);
+    PixelData(wxBitmap& bmp, const wxPoint& pt, const wxSize& sz);
+
+    ~PixelData();
+
+    PixelData##_Accessor GetPixels() const;
+    void UseAlpha();
+
+    %extend {
+        bool __nonzero__() { return self->operator bool(); }
+    }
+
+    %pythoncode {
+    def __iter__(self):
+        """
+        Create and return an iterator object for this pixel data
+        object.  (It's really a generator but I won't tell if you
+        don't tell.)
+        """
+        width  = self.GetWidth()
+        height = self.GetHeight()
+        pixels = self.GetPixels()
+        
+        # This class is a facade over the pixels object (using the one
+        # in the enclosing scope) that only allows Get() and Set() to
+        # be called.
+        class PixelFacade(object):
+            def Get(self):
+                return pixels.Get()
+            def Set(self, *args, **kw):
+                return pixels.Set(*args, **kw)
+            def __str__(self):
+                return str(self.Get())
+            def __repr__(self):
+                return 'pixel(%d,%d): %s' % (x,y,self.Get())
+            X = property(lambda self: x)
+            Y = property(lambda self: y)
+            
+        pf = PixelFacade()        
+        for y in xrange(height):
+            for x in xrange(width):
+                # We always generate the same pf instance, but it
+                # accesses the pixels object which we use to iterate
+                # over the pixel buffer.
+                yield pf    
+                pixels.nextPixel()
+            pixels.MoveTo(self, 0, y)
+    }
+
+    %property(Pixels, GetPixels, doc="See `GetPixels`");
+};
+
+
+
+class PixelData##_Accessor
+{
+public:
+    %nokwargs PixelData##_Accessor;
+    
+    PixelData##_Accessor(PixelData& data);
+    PixelData##_Accessor(wxBitmap& bmp, PixelData& data);
+    PixelData##_Accessor();
+
+    ~PixelData##_Accessor();
+
+    void Reset(const PixelData& data);
+    bool IsOk() const;
+
+    %extend {
+        // PixelData##_Accessor& nextPixel() { return ++(*self); }
+        void nextPixel() { ++(*self); }
+    }
+
+    void Offset(const PixelData& data, int x, int y);
+    void OffsetX(const PixelData& data, int x);
+    void OffsetY(const PixelData& data, int y);
+    void MoveTo(const PixelData& data, int x, int y);
+
+// NOTE: For now I'm not wrapping the Red, Green, Blue and Alpha
+// functions because I can't hide the premultiplying needed on wxMSW
+// if only the individual components are wrapped, plus it would mean 3
+// or 4 trips per pixel from Python to C++ instead of just one.
+// Instead I've added the Set and Get functions and put the
+// premultiplying in there.
+    
+//     %extend {
+//         byte _get_Red()   { return self->Red(); }
+//         byte _get_Green() { return self->Green(); }
+//         byte _get_Blue()  { return self->Blue(); }
+
+//         void _set_Red(byte val)   { self->Red() = val; }
+//         void _set_Green(byte val) { self->Green() = val; }
+//         void _set_Blue(byte val)  { self->Blue() = val; }
+//     }
+
+//     %pythoncode {
+//         Red   = property(_get_Red,   _set_Red)
+//         Green = property(_get_Green, _set_Green)
+//         Blue  = property(_get_Blue,  _set_Blue)
+//     }
+};
+%enddef
+
+
+%pythonAppend wxAlphaPixelData::wxAlphaPixelData "self.UseAlpha()"
+
+// Make the classes
+PIXELDATA(wxNativePixelData)
+PIXELDATA(wxAlphaPixelData)    
+
+
+// Add in a few things that are different between the wxNativePixelData and
+// wxAlphaPixelData and the iterator classes and so are not included in our
+// macro...
+
+%extend wxNativePixelData_Accessor {
+    void Set(byte red, byte green, byte blue) {
+        self->Red()   = red;
+        self->Green() = green;
+        self->Blue()  = blue;
+    }
+    
+    PyObject* Get() {
+        PyObject* rv = PyTuple_New(3);
+        PyTuple_SetItem(rv, 0, PyInt_FromLong(self->Red()));
+        PyTuple_SetItem(rv, 1, PyInt_FromLong(self->Green()));
+        PyTuple_SetItem(rv, 2, PyInt_FromLong(self->Blue()));
+        return rv;            
+    }    
+}
+
+%extend wxAlphaPixelData_Accessor {
+//     byte _get_Alpha()         { return self->Alpha(); }
+//     void _set_Alpha(byte val) { self->Alpha() = val; }
+    
+//     %pythoncode {
+//         Alpha = property(_get_Alpha, _set_Alpha)
+//     }
+
+    void Set(byte red, byte green, byte blue, byte alpha) {
+        self->Red()   = wxPy_premultiply(red,   alpha);
+        self->Green() = wxPy_premultiply(green, alpha);
+        self->Blue()  = wxPy_premultiply(blue,  alpha);
+        self->Alpha() = alpha;
+    }
+    
+    PyObject* Get() {
+        PyObject* rv = PyTuple_New(4);
+        int red   = self->Red();
+        int green = self->Green();
+        int blue  = self->Blue();
+        int alpha = self->Alpha();
+            
+        PyTuple_SetItem(rv, 0, PyInt_FromLong( wxPy_unpremultiply(red,   alpha) ));
+        PyTuple_SetItem(rv, 1, PyInt_FromLong( wxPy_unpremultiply(green, alpha) ));
+        PyTuple_SetItem(rv, 2, PyInt_FromLong( wxPy_unpremultiply(blue,  alpha) ));
+        PyTuple_SetItem(rv, 3, PyInt_FromLong( alpha ));
+        return rv;            
+    }
+}
+
+
 //---------------------------------------------------------------------------
 
 DocStr(wxMask,
@@ -516,7 +816,7 @@ passed then BLACK is used.
     
     %extend {
         wxMask(const wxBitmap& bitmap, const wxColour& colour = wxNullColour) {
-            if ( !colour.Ok() )
+            if ( !colour.IsOk() )
                 return new wxMask(bitmap, *wxBLACK);
             else
                 return new wxMask(bitmap, colour);
@@ -530,3 +830,6 @@ passed then BLACK is used.
 
 //---------------------------------------------------------------------------
 //---------------------------------------------------------------------------
+
+// Turn GIL acquisition back on.
+%threadWrapperOn