def _create_bitmap(self, width, height):
self._data = (ctypes.c_byte * (4 * width * height))()
self._bitmap = ctypes.c_void_p()
self._format = PixelFormat32bppARGB
gdiplus.GdipCreateBitmapFromScan0(width, height, width * 4,
self._format, self._data,
ctypes.byref(self._bitmap))
self._graphics = ctypes.c_void_p()
gdiplus.GdipGetImageGraphicsContext(self._bitmap,
ctypes.byref(self._graphics))
gdiplus.GdipSetPageUnit(self._graphics, UnitPixel)
self._dc = user32.GetDC(0)
gdi32.SelectObject(self._dc, self.font.hfont)
gdiplus.GdipSetTextRenderingHint(self._graphics,
TextRenderingHintAntiAliasGridFit)
self._brush = ctypes.c_void_p()
gdiplus.GdipCreateSolidFill(0xffffffff, ctypes.byref(self._brush))
self._matrix = ctypes.c_void_p()
gdiplus.GdipCreateMatrix(ctypes.byref(self._matrix))
self._flags = (DriverStringOptionsCmapLookup
| DriverStringOptionsRealizedAdvance)
self._rect = Rect(0, 0, width, height)
self._bitmap_height = height
def __init__(self, parent, id=-1, config=None, context=None):
super(Win32WxCanvas, self).__init__(parent, id, config, context)
self._hwnd = self.GetHandle()
self._dc = _user32.GetDC(self._hwnd)
self._context._set_window(self)
self._wgl_context = self._context._context
self.switch_to()
def switch_to(self):
if sys.platform == 'darwin':
agl.aglSetCurrentContext(self._agl_context)
_aglcheck()
elif sys.platform in ('win32', 'cygwin'):
self._dc = _user32.GetDC(self.window.handle)
self.context._set_window(self)
wgl.wglMakeCurrent(self._dc, self.context.glx_context)
else:
glx.glXMakeCurrent(self.context.x_display, self.get_property('window').get_xid(),self.context.glx_context)
self.context.set_current()
gl_info.set_active_context()
glu_info.set_active_context()
def __init__(self, name, size, bold=False, italic=False, dpi=None):
super(Win32Font, self).__init__()
self.logfont = self.get_logfont(name, size, bold, italic, dpi)
self.hfont = gdi32.CreateFontIndirectA(byref(self.logfont))
# Create a dummy DC for coordinate mapping
dc = user32.GetDC(0)
metrics = TEXTMETRIC()
gdi32.SelectObject(dc, self.hfont)
gdi32.GetTextMetricsA(dc, byref(metrics))
self.ascent = metrics.tmAscent
self.descent = -metrics.tmDescent
self.max_glyph_width = metrics.tmMaxCharWidth
def get_logfont(name, size, bold, italic, dpi):
# Create a dummy DC for coordinate mapping
dc = user32.GetDC(0)
if dpi is None:
dpi = 96
logpixelsy = dpi
logfont = LOGFONT()
# Conversion of point size to device pixels
logfont.lfHeight = int(-size * logpixelsy / 72)
if bold:
logfont.lfWeight = FW_BOLD
else:
logfont.lfWeight = FW_NORMAL
logfont.lfItalic = italic
logfont.lfFaceName = name
logfont.lfQuality = ANTIALIASED_QUALITY
return logfont
