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phoenix and py3 port patch from CMcP

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxPython/Phoenix/trunk@73758 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Robin Dunn
2013-03-31 05:05:34 +00:00
parent 7a66c8ecd6
commit 2660dc1429
1 changed files with 75 additions and 59 deletions
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134
wx/lib/wxcairo.py
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@@ -2,13 +2,14 @@
# Name: wx.lib.wxcairo
# Purpose: Glue code to allow the pycairo package to be used
# with a wx.DC as the cairo surface.
#
#
# Author: Robin Dunn
#
# Created: 3-Sept-2008
# RCS-ID: $Id$
# Copyright: (c) 2008 by Total Control Software
# Licence: wxWindows license
#
# Tags: phoenix-port, py3-port
#----------------------------------------------------------------------
"""
@@ -18,8 +19,8 @@ drawing surface. The `CairoContextFromDC` function in this module
will return an instance of the pycairo Context class that is ready for
drawing, using the native cairo surface type for the current platform.
This module requires the pycairo pacakge, and makes use of ctypes for
fetching the pycairo C API and also for digging into the cairo library
This module requires the pycairo package, and makes use of ctypes for
fetching the pycairo C API and also for digging into the cairo library
itself.
To use Cairo with wxPython you will need to have a few dependencies
@@ -51,6 +52,8 @@ installer for the pycairo pacakge here:
import wx
from wx.lib.six import PY3
import cairo
import ctypes
import ctypes.util
@@ -59,16 +62,19 @@ import ctypes.util
#----------------------------------------------------------------------------
# A reference to the cairo shared lib via ctypes.CDLL
cairoLib = None
cairoLib = None
# A reference to the pycairo C API structure
pycairoAPI = None
# a convenience funtion, just to save a bit of typing below
# a convenience function, just to save a bit of typing below
def voidp(ptr):
"""Convert a SWIGged void* type to a ctypes c_void_p"""
return ctypes.c_void_p(long(ptr))
"""Convert a SIP void* type to a ctypes c_void_p"""
if PY3:
return ctypes.c_void_p(int(ptr))
else:
return ctypes.c_void_p(long(ptr))
#----------------------------------------------------------------------------
@@ -79,8 +85,8 @@ def ContextFromDC(dc):
at this time.)
"""
if not isinstance(dc, wx.WindowDC) and not isinstance(dc, wx.MemoryDC):
raise TypeError, "Only window and memory DC's are supported at this time."
raise TypeError("Only window and memory DC's are supported at this time.")
if 'wxMac' in wx.PlatformInfo:
width, height = dc.GetSize()
@@ -88,15 +94,9 @@ def ContextFromDC(dc):
cgc = dc.GetHandle()
assert cgc is not None, "Unable to get CGContext from DC."
cgref = voidp( cgc )
surface_create = cairoLib.cairo_quartz_surface_create_for_cg_context
surface_create.argtypes = [ctypes.c_void_p, ctypes.c_int, ctypes.c_int]
surface_create.restype = ctypes.c_void_p
surfaceptr = voidp(surface_create(cgref, width, height))
# create a cairo context for that surface
cairo_create = cairoLib.cairo_create
cairo_create.argtypes = [ctypes.c_void_p]
cairo_create.restype = ctypes.c_void_p
ctxptr = voidp(cairo_create(surfaceptr))
# Turn it into a pycairo context object
@@ -105,7 +105,7 @@ def ContextFromDC(dc):
# The context keeps its own reference to the surface
cairoLib.cairo_surface_destroy(surfaceptr)
elif 'wxMSW' in wx.PlatformInfo:
# This one is easy, just fetch the HDC and use PyCairo to make
# the surface and context.
@@ -114,25 +114,22 @@ def ContextFromDC(dc):
hdc = ctypes.c_long(hdc)
surface = cairo.Win32Surface(hdc.value)
ctx = cairo.Context(surface)
elif 'wxGTK' in wx.PlatformInfo:
gdkLib = _findGDKLib()
# Get the GdkDrawable from the dc
drawable = voidp( dc.GetHandle() )
# Call a GDK API to create a cairo context
gdkLib.gdk_cairo_create.restype = ctypes.c_void_p
ctxptr = gdkLib.gdk_cairo_create(drawable)
# Turn it into a pycairo context object
ctx = pycairoAPI.Context_FromContext(ctxptr, pycairoAPI.Context_Type, None)
else:
raise NotImplementedError, "Help me, I'm lost..."
return ctx
else:
raise NotImplementedError("Help me, I'm lost...")
return ctx
#----------------------------------------------------------------------------
@@ -142,43 +139,30 @@ def FontFaceFromFont(font):
Creates and returns a cairo.FontFace object from the native
information in a wx.Font.
"""
if 'wxMac' in wx.PlatformInfo:
font_face_create = cairoLib.cairo_quartz_font_face_create_for_cgfont
font_face_create.argtypes = [ctypes.c_void_p]
font_face_create.restype = ctypes.c_void_p
fontfaceptr = font_face_create(voidp(font.OSXGetCGFont()))
fontface = pycairoAPI.FontFace_FromFontFace(fontfaceptr)
elif 'wxMSW' in wx.PlatformInfo:
cairoLib.cairo_win32_font_face_create_for_hfont.restype = ctypes.c_void_p
fontfaceptr = voidp( cairoLib.cairo_win32_font_face_create_for_hfont(
ctypes.c_ulong(font.GetHFONT())) )
fontface = pycairoAPI.FontFace_FromFontFace(fontfaceptr)
elif 'wxGTK' in wx.PlatformInfo:
gdkLib = _findGDKLib()
pcLib = _findPangoCairoLib()
# wow, this is a hell of a lot of steps...
desc = voidp( font.GetPangoFontDescription() )
pcLib.pango_cairo_font_map_get_default.restype = ctypes.c_void_p
pcfm = voidp(pcLib.pango_cairo_font_map_get_default())
gdkLib.gdk_pango_context_get.restype = ctypes.c_void_p
pctx = voidp(gdkLib.gdk_pango_context_get())
pcLib.pango_font_map_load_font.restype = ctypes.c_void_p
pfnt = voidp( pcLib.pango_font_map_load_font(pcfm, pctx, desc) )
pcLib.pango_cairo_font_get_scaled_font.restype = ctypes.c_void_p
scaledfontptr = voidp( pcLib.pango_cairo_font_get_scaled_font(pfnt) )
cairoLib.cairo_scaled_font_get_font_face.restype = ctypes.c_void_p
fontfaceptr = voidp(cairoLib.cairo_scaled_font_get_font_face(scaledfontptr))
cairoLib.cairo_font_face_reference(fontfaceptr)
@@ -187,7 +171,7 @@ def FontFaceFromFont(font):
gdkLib.g_object_unref(pctx)
else:
raise NotImplementedError, "Help me, I'm lost..."
raise NotImplementedError("Help me, I'm lost...")
return fontface
@@ -202,7 +186,7 @@ def BitmapFromImageSurface(surface):
format = surface.get_format()
if format not in [cairo.FORMAT_ARGB32, cairo.FORMAT_RGB24]:
raise TypeError("Unsupported format")
width = surface.get_width()
height = surface.get_height()
stride = surface.get_stride()
@@ -212,7 +196,7 @@ def BitmapFromImageSurface(surface):
else:
fmt = wx.BitmapBufferFormat_RGB32
bmp = wx.EmptyBitmap(width, height, 32)
bmp = wx.Bitmap(width, height, 32)
bmp.CopyFromBuffer(data, fmt, stride)
return bmp
@@ -222,7 +206,7 @@ def ImageSurfaceFromBitmap(bitmap):
Create an ImageSurface from a wx.Bitmap
"""
width, height = bitmap.GetSize()
if bitmap.HasAlpha():
if bitmap.ConvertToImage().HasAlpha():
format = cairo.FORMAT_ARGB32
fmt = wx.BitmapBufferFormat_ARGB32
else:
@@ -233,7 +217,7 @@ def ImageSurfaceFromBitmap(bitmap):
stride = cairo.ImageSurface.format_stride_for_width(format, width)
except AttributeError:
stride = width * 4
surface = cairo.ImageSurface(format, width, height)
bitmap.CopyToBuffer(surface.get_data(), fmt, stride)
surface.mark_dirty()
@@ -265,14 +249,14 @@ def _findCairoLib():
# if that didn't work then use the ctypes util to search the paths
# appropriate for the system
for name in names:
location = ctypes.util.find_library(name)
location = ctypes.util.find_library(name)
if location:
try:
cairoLib = ctypes.CDLL(location)
return
except:
pass
# If the above didn't find it on OS X then we still have a
# trick up our sleeve...
if 'wxMac' in wx.PlatformInfo:
@@ -289,9 +273,9 @@ def _findCairoLib():
pass
if not cairoLib:
raise RuntimeError, "Unable to find the Cairo shared library"
raise RuntimeError("Unable to find the Cairo shared library")
#----------------------------------------------------------------------------
@@ -309,7 +293,7 @@ def _findHelper(names, key, msg):
if location:
break
if not location:
raise RuntimeError, msg
raise RuntimeError(msg)
dll = ctypes.CDLL(location)
_dlls[key] = dll
return dll
@@ -325,7 +309,7 @@ def _findPangoCairoLib():
def _findAppSvcLib():
return _findHelper(['ApplicationServices'], 'appsvc',
"Unable to find the ApplicationServices Framework")
#----------------------------------------------------------------------------
@@ -374,7 +358,7 @@ class Pycairo_CAPI(ctypes.Structure):
# This structure is known good with pycairo 1.8.4.
# We have to also test for (1,10,8) because pycairo 1.8.10 has an
# incorrect version_info value
elif cairo.version_info < (1,9) or cairo.version_info == (1,10,8):
elif cairo.version_info < (1,9) or cairo.version_info == (1,10,8):
_fields_ = [
('Context_Type', ctypes.py_object),
('Context_FromContext', ctypes.PYFUNCTYPE(ctypes.py_object,
@@ -414,7 +398,7 @@ class Pycairo_CAPI(ctypes.Structure):
# This structure is known good with pycairo 1.10.0. They keep adding stuff
# to the middle of the structure instead of only adding to the end!
elif cairo.version_info < (1,11):
elif cairo.version_info < (1,11):
_fields_ = [
('Context_Type', ctypes.py_object),
('Context_FromContext', ctypes.PYFUNCTYPE(ctypes.py_object,
@@ -422,7 +406,7 @@ class Pycairo_CAPI(ctypes.Structure):
ctypes.py_object,
ctypes.py_object)),
('FontFace_Type', ctypes.py_object),
('ToyFontFace_Type', ctypes.py_object),
('ToyFontFace_Type', ctypes.py_object),
('FontFace_FromFontFace', ctypes.PYFUNCTYPE(ctypes.py_object, ctypes.c_void_p)),
('FontOptions_Type', ctypes.py_object),
('FontOptions_FromFontOptions', ctypes.PYFUNCTYPE(ctypes.py_object, ctypes.c_void_p)),
@@ -459,11 +443,17 @@ def _loadPycairoAPI():
global pycairoAPI
if pycairoAPI is not None:
return
PyCObject_AsVoidPtr = ctypes.pythonapi.PyCObject_AsVoidPtr
PyCObject_AsVoidPtr.argtypes = [ctypes.py_object]
PyCObject_AsVoidPtr.restype = ctypes.c_void_p
ptr = PyCObject_AsVoidPtr(cairo.CAPI)
if PY3:
PyCapsule_GetPointer = ctypes.pythonapi.PyCapsule_GetPointer
PyCapsule_GetPointer.argtypes = [ctypes.py_object, ctypes.c_char_p]
PyCapsule_GetPointer.restype = ctypes.c_void_p
ptr = PyCapsule_GetPointer(cairo.CAPI, b'cairo.CAPI')
else:
PyCObject_AsVoidPtr = ctypes.pythonapi.PyCObject_AsVoidPtr
PyCObject_AsVoidPtr.argtypes = [ctypes.py_object]
PyCObject_AsVoidPtr.restype = ctypes.c_void_p
ptr = PyCObject_AsVoidPtr(cairo.CAPI)
pycairoAPI = ctypes.cast(ptr, ctypes.POINTER(Pycairo_CAPI)).contents
#----------------------------------------------------------------------------
@@ -473,4 +463,30 @@ def _loadPycairoAPI():
_findCairoLib()
_loadPycairoAPI()
if 'wxMac' in wx.PlatformInfo:
surface_create = cairoLib.cairo_quartz_surface_create_for_cg_context
surface_create.argtypes = [ctypes.c_void_p, ctypes.c_int, ctypes.c_int]
surface_create.restype = ctypes.c_void_p
cairo_create = cairoLib.cairo_create
cairo_create.argtypes = [ctypes.c_void_p]
cairo_create.restype = ctypes.c_void_p
font_face_create = cairoLib.cairo_quartz_font_face_create_for_cgfont
font_face_create.argtypes = [ctypes.c_void_p]
font_face_create.restype = ctypes.c_void_p
elif 'wxMSW' in wx.PlatformInfo:
cairoLib.cairo_win32_font_face_create_for_hfont.restype = ctypes.c_void_p
elif 'wxGTK' in wx.PlatformInfo:
gdkLib = _findGDKLib()
pcLib = _findPangoCairoLib()
gdkLib.gdk_cairo_create.restype = ctypes.c_void_p
pcLib.pango_cairo_font_map_get_default.restype = ctypes.c_void_p
gdkLib.gdk_pango_context_get.restype = ctypes.c_void_p
pcLib.pango_font_map_load_font.restype = ctypes.c_void_p
pcLib.pango_cairo_font_get_scaled_font.restype = ctypes.c_void_p
cairoLib.cairo_scaled_font_get_font_face.restype = ctypes.c_void_p
#----------------------------------------------------------------------------