def __del__(self):
try:
if self._dc:
gdi32.DeleteDC(self._dc)
if self._bitmap:
gdi32.DeleteObject(self._bitmap)
except:
pass
def update_transparency(self):
region = _gdi32.CreateRectRgn(0, 0, -1, -1)
bb = DWM_BLURBEHIND()
bb.dwFlags = DWM_BB_ENABLE | DWM_BB_BLURREGION
bb.hRgnBlur = region
bb.fEnable = True
_dwmapi.DwmEnableBlurBehindWindow(self._hwnd, ctypes.byref(bb))
_gdi32.DeleteObject(region)
def get_icon(image):
# Alpha-blended icon: see http://support.microsoft.com/kb/318876
format = 'BGRA'
pitch = len(format) * image.width
header = BITMAPV5HEADER()
header.bV5Size = sizeof(header)
header.bV5Width = image.width
header.bV5Height = image.height
header.bV5Planes = 1
header.bV5BitCount = 32
header.bV5Compression = BI_BITFIELDS
header.bV5RedMask = 0x00ff0000
header.bV5GreenMask = 0x0000ff00
header.bV5BlueMask = 0x000000ff
header.bV5AlphaMask = 0xff000000
hdc = _user32.GetDC(None)
dataptr = c_void_p()
bitmap = _gdi32.CreateDIBSection(hdc,
byref(header), DIB_RGB_COLORS,
byref(dataptr), None, 0)
_user32.ReleaseDC(None, hdc)
image = image.get_image_data()
data = image.get_data(format, pitch)
memmove(dataptr, data, len(data))
mask = _gdi32.CreateBitmap(image.width, image.height, 1, 1, None)
iconinfo = ICONINFO()
iconinfo.fIcon = True
iconinfo.hbmMask = mask
iconinfo.hbmColor = bitmap
icon = _user32.CreateIconIndirect(byref(iconinfo))
_gdi32.DeleteObject(mask)
_gdi32.DeleteObject(bitmap)
return icon
def _create_cursor_from_image(self, cursor):
"""Creates platform cursor from an ImageCursor instance."""
fmt = 'BGRA'
image = cursor.texture
pitch = len(fmt) * image.width
header = BITMAPINFOHEADER()
header.biSize = sizeof(header)
header.biWidth = image.width
header.biHeight = image.height
header.biPlanes = 1
header.biBitCount = 32
hdc = _user32.GetDC(None)
dataptr = c_void_p()
bitmap = _gdi32.CreateDIBSection(hdc, byref(header), DIB_RGB_COLORS,
byref(dataptr), None, 0)
_user32.ReleaseDC(None, hdc)
image = image.get_image_data()
data = image.get_data(fmt, pitch)
memmove(dataptr, data, len(data))
mask = _gdi32.CreateBitmap(image.width, image.height, 1, 1, None)
iconinfo = ICONINFO()
iconinfo.fIcon = False
iconinfo.hbmMask = mask
iconinfo.hbmColor = bitmap
iconinfo.xHotspot = int(cursor.hot_x)
iconinfo.yHotspot = int(image.height - cursor.hot_y)
icon = _user32.CreateIconIndirect(byref(iconinfo))
_gdi32.DeleteObject(mask)
_gdi32.DeleteObject(bitmap)
return icon
def _create_bitmap(self, width, height):
self._black = gdi32.GetStockObject(BLACK_BRUSH)
self._white = gdi32.GetStockObject(WHITE_BRUSH)
if self._dc:
gdi32.ReleaseDC(self._dc)
if self._bitmap:
gdi32.DeleteObject(self._bitmap)
pitch = width * 4
data = POINTER(c_byte * (height * pitch))()
info = BITMAPINFO()
info.bmiHeader.biSize = sizeof(info.bmiHeader)
info.bmiHeader.biWidth = width
info.bmiHeader.biHeight = height
info.bmiHeader.biPlanes = 1
info.bmiHeader.biBitCount = 32
info.bmiHeader.biCompression = BI_RGB
self._dc = gdi32.CreateCompatibleDC(None)
self._bitmap = gdi32.CreateDIBSection(None,
byref(info), DIB_RGB_COLORS,
byref(data), None, 0)
# Spookiness: the above line causes a "not enough storage" error,
# even though that error cannot be generated according to docs,
# and everything works fine anyway. Call SetLastError to clear it.
kernel32.SetLastError(0)
self._bitmap_data = data.contents
self._bitmap_rect = RECT()
self._bitmap_rect.left = 0
self._bitmap_rect.right = width
self._bitmap_rect.top = 0
self._bitmap_rect.bottom = height
self._bitmap_height = height
if _debug_font:
_debug('%r._create_dc(%d, %d)' % (self, width, height))
_debug('_dc = %r' % self._dc)
_debug('_bitmap = %r' % self._bitmap)
_debug('pitch = %r' % pitch)
_debug('info.bmiHeader.biSize = %r' % info.bmiHeader.biSize)
def __del__(self):
gdi32.DeleteObject(self.hfont)
