* 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();
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
bool __eq__(const wxBitmap* other) { return other ? (*self == *other) : false; }
bool __ne__(const wxBitmap* other) { return other ? (*self != *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`");
+
};
// 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) / 256)
-#define wxPy_unpremultiply(p, a) ((a) ? ((p) * 256 / (a)) : (p))
+#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)
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. On Windows the RGB values are 'premultiplied' by the alpha
- values. (The other platforms appear to already be premultiplying the
- alpha.)
-
- 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:
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,
- 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
- appear to already be premultiplying the alpha.)
-
- 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)
}
// 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`");
};
%pythoncode {
def __iter__(self):
- """Create and return an iterator object for this pixel data object."""
- return self.PixelIterator(self)
-
- class PixelIterator(object):
"""
- Sequential iterator which returns pixel accessor objects starting at the
- the top-left corner, and going row-by-row until the bottom-right
- corner is reached.
+ 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.)
"""
-
- class PixelAccessor(object):
- """
- This class is what is returned by the iterator and allows the pixel
- to be Get or Set.
- """
- def __init__(self, data, pixels, x, y):
- self.data = data
- self.pixels = pixels
- self.x = x
- self.y = y
- def Set(self, *args, **kw):
- self.pixels.MoveTo(self.data, self.x, self.y)
- return self.pixels.Set(*args, **kw)
+ 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):
- self.pixels.MoveTo(self.data, self.x, self.y)
- return self.pixels.Get()
-
- def __init__(self, pixelData):
- self.x = self.y = 0
- self.w = pixelData.GetWidth()
- self.h = pixelData.GetHeight()
- self.data = pixelData
- self.pixels = pixelData.GetPixels()
-
- def __iter__(self):
- return self
-
- def next(self):
- if self.y >= self.h:
- raise StopIteration
- p = self.PixelAccessor(self.data, self.pixels, self.x, self.y)
- self.x += 1
- if self.x >= self.w:
- self.x = 0
- self.y += 1
- return p
+ 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`");
};
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. Instead I've added the Set and Get
-// functions and put the puemultiplying in there.
+// 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(); }
projects / wxWidgets.git / blobdiff