============================
This document will help explain some of the major changes in wxPython
-2.5 and let you know what you need to do to adapt your programs to
-those changes. Be sure to also check in the CHANGES_ file like
-usual to see info about the not so major changes and other things that
-have been added to wxPython.
+2.5 since the 2.4 series and let you know what you need to do to adapt
+your programs to those changes. Be sure to also check in the CHANGES_
+file like usual to see info about the not so major changes and other
+things that have been added to wxPython.
.. _CHANGES: CHANGES.html
.. _here: http://www.wxwidgets.org/name.htm
This won't really affect wxPython all that much, other than the fact
-that the wxwindows.org domain name will be changing to wxwidgets.org,
-so mail list, CVS, and etc. addresses will be changing. We're going
+that the wxwindows.org domain name has changed to wxwidgets.org,
+so mail list, CVS, and etc. addresses have also changed. We're going
to try and smooth the transition as much as possible, but I wanted you
all to be aware of this change if you run into any issues.
operation unless you first have created an app object, (even on
Windows where most anything was possible before.)
+**[Changed in 2.5.2.x]** All the Window and GDI (pen, bitmap, etc.)
+class constructors and also many toplevel functions and static methods
+will now check that a wx.App object has already been created and will
+raise a wx.PyNoAppError exception if not.
+
+
SWIG 1.3
distribution.) This has some far reaching ramifications:
All classes derive from object and so all are now "new-style
- classes"
+ classes." This also allows you to use mixin classes that are
+ new-style and to use properties, staticmethod, etc.
Public data members of the C++ classes are wrapped as Python
- properties using property() instead of using __getattr__/__setattr__
- like before. Normally you shouldn't notice any difference, but if
- you were previously doing something with __getattr__/__setattr__
- in derived classes then you may have to adjust things.
-
- Static C++ methods are wrapped using the staticmethod()
- feature of Python and so are accessible as ClassName.MethodName
- as expected. They are still available as top level functions
+ properties using property() instead of using
+ __getattr__/__setattr__ hacks like before. Normally you shouldn't
+ notice any difference, but if you were previously doing something
+ with __getattr__/__setattr__ in derived classes then you may have
+ to adjust things.
+
+ Static C++ methods are wrapped using the staticmethod() feature of
+ Python and so are accessible as ClassName.MethodName as expected.
+ They are still also available as top level functions named like
ClassName_MethodName as before.
The relationship between the wxFoo and wxFooPtr classes have
changed for the better. Specifically, all instances that you see
- will be wxFoo even if they are created internally using wxFooPtr,
- because wxFooPtr.__init__ will change the instance's __class__ as
+ will be wx.Foo even if they are created internally using wx.FooPtr,
+ because wx.FooPtr.__init__ will change the instance's __class__ as
part of the initialization. If you have any code that checks
- class type using something like isinstance(obj, wxFooPtr) you will
- need to change it to isinstance(obj, wxFoo).
+ class type using something like isinstance(obj, wx.FooPtr) you will
+ need to change it to isinstance(obj, wx.Foo).
If you create your own custom event types and EVT_* functions, and you
want to be able to use them with the Bind method above then you should
-change your EVT_* to be an instance of wxPyEventBinder instead of a
+change your EVT_* to be an instance of wx.PyEventBinder instead of a
function. For example, if you used to have something like this::
myCustomEventType = wxNewEventType()
The second parameter is an integer in [0, 1, 2] that specifies the
number of IDs that are needed to be passed to Connect.
+**[Changed in 2.5.2.x]** There is also an Unbind method added to
+wx.EvtHandler that can be used to disconenct event handlers. It looks
+like this::
+
+ def Unbind(self, event, source=None, id=wx.ID_ANY, id2=wx.ID_ANY):
+ """
+ Disconencts the event handler binding for event from self.
+ Returns True if successful.
+ """
2.4, the compatibility modules are generated at build time and contain
assignment statements like this::
- wxWindow = wx.core.Window
+ wxWindow = wx._core.Window
-Don't let the "core" in the name bother you. That and some other
+Don't let the "_core" in the name bother you. That and some other
modules are implementation details, and everything that was in the
wxPython.wx module before will still be in the wx package namespace
-after this change. So from your code you would use it as wx.Window.
+after this change. So from your code you would use it as wx.Window or
+wxWindow if you import from the wxPython.wx module.
A few notes about how all of this was accomplished might be
interesting... SWIG is now run twice for each module that it is
New wx.DC Methods
-----------------
-Many of the Draw methods of wx.DC have alternate forms in C++ that take
-wxPoint or wxSize parameters (let's call these *Type A*) instead of
-the individual x, y, width, height, etc. parameters (and we'll call
-these *Type B*). In the rest of the library I normally made the *Type
-A* forms of the methods be the default method with the "normal" name,
-and had renamed the *Type B* forms of the methods to some similar
-name. For example in wx.Window we have these Python methods::
-
- SetSize(size) # Type A
- SetSizeWH(width, height) # Type B
-
-
-For various reasons the new *Type A* methods in wx.DC were never added
-and the existing *Type B* methods were never renamed. Now that lots
-of other things are also changing in wxPython it has been decided that
-it is a good time to also do the method renaming in wx.DC too in order
-to be consistent with the rest of the library. The methods in wx.DC
-that are affected are listed here::
-
- FloodFillXY(x, y, colour, style = wx.FLOOD_SURFACE)
- FloodFill(point, colour, style = wx.FLOOD_SURFACE)
-
- GetPixelXY(x, y)
- GetPixel(point)
-
- DrawLineXY(x1, y1, x2, y2)
- DrawLine(point1, point2)
-
- CrossHairXY(x, y)
- CrossHair(point)
-
- DrawArcXY(x1, y1, x2, y2, xc, yc)
- DrawArc(point1, point2, center)
-
- DrawCheckMarkXY(x, y, width, height)
- DrawCheckMark(rect)
+**[Changed in 2.5.2.x]** In wxPython 2.5.1.5 there was a new
+implementation of the wx.DC Draw and other methods that broke
+backwards compatibility in the name of consistency. That change has
+been reverted and the wx.DC Draw methods with 2.4 compatible
+signatures have been restored. In addition a new set of methods have
+been added that take wx.Point and/or wx.Size parameters instead of
+separate integer parameters. The Draw and etc. methods now available
+in the wx.DC class are::
- DrawEllipticArcXY(x, y, w, h, start_angle, end_angle)
- DrawEllipticArc(point, size, start_angle, end_angle)
- DrawPointXY(x, y)
- DrawPoint(point)
+ FloodFill(self, x, y, colour, style = wx.FLOOD_SURFACE)
+ FoodFillPoint(self, pt, colour, style = wx.FLOOD_SURFACE)
- DrawRectangleXY(x, y, width, height)
- DrawRectangle(point, size)
- DrawRectangleRect(rect)
+ GetPixel(self, x,y)
+ GetPixelPoint(self, pt)
+
+ DrawLine(self, x1, y1, x2, y2)
+ DrawLinePoint(self, pt1, pt2)
- DrawRoundedRectangleXY(x, y, width, height, radius)
- DrawRoundedRectangle(point, size, radius)
- DrawRoundedRectangleRect(rect, radius)
+ CrossHair(self, x, y)
+ CrossHairPoint(self, pt)
- DrawCircleXY(x, y, radius)
- DrawCircle(point, radius)
+ DrawArc(self, x1, y1, x2, y2, xc, yc)
+ DrawArcPoint(self, pt1, pt2, centre)
- DrawEllipseXY(x, y, width, height)
- DrawEllipse(point, size)
- DrawEllipseRect(rect)
+ DrawCheckMark(self, x, y, width, height)
+ DrawCheckMarkRect(self, rect)
- DrawIconXY(icon, x, y)
- DrawIcon(icon, point)
+ DrawEllipticArc(self, x, y, w, h, sa, ea)
+ DrawEllipticArcPointSize(self, pt, sz, sa, ea)
- DrawBitmapXY(bmp, x, y, useMask = FALSE)
- DrawBitmap(bmp, point, useMask = FALSE)
+ DrawPoint(self, x, y)
+ DrawPointPoint(self, pt)
- DrawTextXY(text, x, y)
- DrawText(text, point)
+ DrawRectangle(self, x, y, width, height)
+ DrawRectangleRect(self, rect)
+ DrawRectanglePointSize(self, pt, sz)
- DrawRotatedTextXY(text, x, y, angle)
- DrawRotatedText(text, point, angle)
+ DrawRoundedRectangle(self, x, y, width, height, radius)
+ DrawRoundedRectangleRect(self, r, radius)
+ DrawRoundedRectanglePointSize(self, pt, sz, radius)
-
- BlitXY(xdest, ydest, width, height, sourceDC, xsrc, ysrc,
- rop = wxCOPY, useMask = FALSE, xsrcMask = -1, ysrcMask = -1)
- Blit(destPt, size, sourceDC, srcPt,
- rop = wxCOPY, useMask = FALSE, srcPtMask = wx.DefaultPosition)
+ DrawCircle(self, x, y, radius)
+ DrawCirclePoint(self, pt, radius)
- SetClippingRegionXY(x, y, width, height)
- SetClippingRegion(point, size)
- SetClippingRect(rect)
- SetClippingRegionAsRegion(region);
+ DrawEllipse(self, x, y, width, height)
+ DrawEllipseRect(self, rect)
+ DrawEllipsePointSize(self, pt, sz)
-
-If you have code that draws on a DC and you are using the new wx
-namespace then you **will** get errors because of these changes, but
-it should be easy to fix the code. You can either change the name of
-the *Type B* method called to the names shown above, or just add
-parentheses around the parameters as needed to turn them into tuples
-and let the SWIG typemaps turn them into the wx.Point or wx.Size
-object that is expected. Then you will be calling the new *Type A*
-method. For example, if you had this code before::
+ DrawIcon(self, icon, x, y)
+ DrawIconPoint(self, icon, pt)
- dc.DrawRectangle(x, y, width, height)
+ DrawBitmap(self, bmp, x, y, useMask = False)
+ DrawBitmapPoint(self, bmp, pt, useMask = False)
-You could either continue to use the *Type B* method by changing the
-name to DrawRectangleXY, or just change it to the new *Type A* by
-adding some parentheses like this::
+ DrawText(self, text, x, y)
+ DrawTextPoint(self, text, pt)
- dc.DrawRectangle((x, y), (width, height))
+ DrawRotatedText(self, text, x, y, angle)
+ DrawRotatedTextPoint(self, text, pt, angle)
-Or if you were already using a point and size like this::
+ bool Blit(self, xdest, ydest, width, height, sourceDC, xsrc, ysrc,
+ rop = wx.COPY, useMask = False, xsrcMask = -1, ysrcMask = -1)
+ BlitPointSize(self, destPt, sz, sourceDC, srcPt, rop = wx.COPY,
+ useMask = False, srcPtMask = wxDefaultPosition)
- dc.DrawRectangle(p.x, p.y, s.width, s.height)
-Then you can just simplify it like this::
+ SetClippingRegion(self, x, y, width, height)
+ SetClippingRegionPointSize(self, pt, sz)
+ SetClippingRegionAsRegion(self, region)
+ SetClippingRect(self, rect)
- dc.DrawRectangle(p, s)
-Now before you start yelling and screaming at me for breaking all your
-code, take note that up above I said, "...using the new wx
-namespace..." That's because if you are still importing from
-wxPython.wx then there are some classes defined there with Draw and
-etc. methods that have 2.4 compatible signatures. Unfortunately there
-is one exception to this behaviour. If a DC is returned from a
-function or method then an instance of the new class (with the new
-methods described above) will be returned instead of the compatibility
-class. If/When the old wxPython.wx namespace is removed then these
-compatibility classes will be removed too so you should plan on
-migrating to the new namespace and new DC Draw methods before that
-time.
The hack allowing the old "option" keyword parameter has been removed.
If you use keyword args with w.xSizer Add, Insert, or Prepend methods
-then you will need to use the ``proportion`` name instead of ``option``.
+then you will need to use the ``proportion`` name instead of
+``option``. (The ``proportion`` keyword was also allowed in 2.4.2.4.)
When adding a spacer to a sizer you now need to use a wx.Size or a
2-integer sequence instead of separate width and height parameters.
-This allows for more consistency in how you add the various types of
-items to a sizer. The first parameter defines the item (instead of
-the possibily first two, depending on if you are doing a spacer or
-not,) and that item can either be a window, a sizer or a spacer (which
-can be a sequence or a wx.Size.)
+This was optionally allowed in 2.4, but now it is required. This
+allows for more consistency in how you add the various types of items
+to a sizer. The first parameter defines the item (instead of the
+possibily first two, depending on if you are doing a spacer or not,)
+and that item can either be a window, a sizer or a spacer (which can
+be a sequence or a wx.Size.) Removing the option for separate width
+and height parameters greatly simplified the wrapper code.
The wx.GridBagSizer class (very similar to the RowColSizer in the
library) has been added to C++ and wrapped for wxPython. It can also
You should not use AddWindow, AddSizer, AddSpacer (and similar for
Insert, Prepend, and etc.) methods any longer. Just use Add and the
-wrappers will figure out what to do.
+wrappers will figure out what to do. **[Changed in 2.5.2.x]**
+AddWindow, AddSize, AddSpacer and etc. will now issue a
+DeprecationWarning.
-**[Changed in 2.5.1.6]** wx.ADJUST_MINSIZE is now the default
+**[Changed in 2.5.2.x]** wx.ADJUST_MINSIZE is now the default
behaviour for window items in sizers. This means that the item's
-GetAdjustedBestSize will be called when calculating layout and the
-return value from that will be used for the minimum size. Added
-wx.FIXED_MINSIZE flag for when you would like the old behavior but you
-should only need it when your desired size is smaller than the item's
-GetBestSize. When a window is added to a sizer it's initial size, if
-any, is set as the window's minimal size using SetSizeHints if there
-isn't already a minimal size.
+GetMinSize and/or GetBestSize will be called when calculating layout
+and the return value from that will be used for the minimum size used
+by the sizer. The wx.FIXED_MINSIZE flag was added that will cause the
+sizer to use the old behaviour in that it will *not* call the window's
+methods to determine the new best size, instead the minsize that the
+window had when added to the sizer (or the size the window was created
+with) will always be used.
+
+Related to the above, when controls and some other window types are
+created either the size passed to the constructor, or their "best
+size" if an explicit size was not passed in, is set as the window's
+minimal size. For non top-level windows that hasn't meant much in the
+past, but now the sizers are sensitive to the window's minimal size.
+The key point to understand here is that it is no longer the window's
+size it has when added to the sizer that matters, but its minimal
+size. So you might have some issues to iron out if you create a
+control without a size and then set its size to something before
+adding it to the sizer. Since it's minimal size is probably not the
+size you set then the sizer will appear to be misbehaving. The fix is
+to either set the size when calling the window's constructor, or to
+reset the min size by calling SetSizeHints. You can call SetSizeHints
+at anytime to change the minsize of a window, just call the sizer's
+Layout method to redistribute the controls as needed.
+
PlatformInfo
-Other Stuff
------------
+
+PNG Images
+----------
+
+Prior to 2.5 the PNG image handler would convert all alpha channel
+information to a mask when the image was loaded. Pixels that were
+more than halfway transparent would be made fully transparent by the
+mask and the rest would be made fully opaque.
+
+In 2.5 the image handler has been updated to preserve the alpha
+channel and will now only create a mask when all the pixels in the
+image are either fully transparent or fully opaque. In addition, the
+wx.DC.DrawBitmap and wx.DC.Blit methods are able to correctly blend
+the pixels in the image with partially transparent alpha values.
+(Currently only on MSW and Mac, if anybody knows how to do it for GTK
+then please submit a patch!)
+
+If you are using a PNG with an alpha channel but you need to have a
+wx.Mask like you automatically got in 2.4 then you can do one of the
+following:
+
+ * Edit the image and make all the partially transparent pixels be
+ fully transparent.
+
+ * Use a different image type.
+
+ * Set a mask based on colour after you load the image.
+
+
+
+OGL is dead! LONG LIVE OGL!
+---------------------------
+
+**[Changed in 2.5.2.x]**
+
+The wx.ogl module has been deprecated in favor of the new Python port
+of the OGL library located at wx.lib.ogl contributed by Pierre Hjälm.
+This will hopefully greatly extend the life of OGL within wxPython by
+making it more easily maintainable and less prone to getting rusty as
+there seems to be less and less interest in maintaining the C++
+version.
+
+There are only a few known compatibility issues at this time. First
+is the location of OGL. The deprecated version is located in the
+wx.ogl module, and the new version is in the wx.lib.ogl package. So
+this just means that to start using the new version you need to adjust
+your imports. So if your code currently has something like this::
+
+ import wx
+ import wx.ogl as ogl
+
+Then just change it to this::
+
+ import wx
+ import wx.lib.ogl as ogl
+
+The other compatibility issue deals with removing a wart in the
+original API that was necessary in order to allow overloaded methods
+in derived classes to call the same method in the base class when
+using the old SWIG. Instead dedaling with the wart you can now just
+call the base class method like you woudl for any other Python class.
+For example, if you had to do something like this previously::
+
+ class MyDividedShape(ogl.DividedShape):
+ ...
+ def OnSizingEndDragLeft(self, pt, x, y, keys, attch):
+ self.base_OnSizingEndDragLeft(pt, x, y, keys, attch)
+ ...
+
+You will need to change it to be like this::
+
+ class MyDividedShape(ogl.DividedShape):
+ ...
+ def OnSizingEndDragLeft(self, pt, x, y, keys, attch):
+ ogl.DividedShape.OnSizingEndDragLeft(self, pt, x, y, keys, attch)
+ ...
+
+
+
+Obsolete Modules
+----------------
Instead of over a dozen separate extension modules linked together
into a single extension module, the "core" module is now just a few
Because of the above and also because of the way the new SWIG works,
the "internal" module names have changed, but you shouldn't have been
-using them anyway so it shouldn't bother you. ;-)
+using them anyway so it shouldn't bother you. ;-) In case you were
+erroneously using them in 2.4, here are the internal extension modules
+no longer exist:
+
+ * clip_dnd
+ * cmndlgs
+ * controls
+ * controls2
+ * events
+ * filesys
+ * fonts
+ * frames
+ * gdi
+ * image
+ * mdi
+ * misc
+ * misc2
+ * printfw
+ * sizers
+ * stattool
+ * streams
+ * utils
+ * windows
+ * windows2
+ * windows3
+
+They have been replaced by the following, but please remember that
+these are just "implementation details" and you should really be using
+the objects in these modules only via the wx or wxPython.wx packages:
+
+ * _core
+ * _gdi
+ * _windows
+ * _controls
+ * _misc
+
The help module no longer exists and the classes therein are now part
of the core module imported with wxPython.wx or the wx package.
+
+
+
+Other Stuff
+-----------
+
wxPyDefaultPosition and wxPyDefaultSize are gone. Use the
wxDefaultPosition and wxDefaultSize objects instead.
Use None instead of the ancient and should have been removed a long
time ago wx.NULL alias.
-wx.TreeCtrl no longer needs to be passed the cookie variable as the
-2nd parameter. It still returns it though, for use with GetNextChild.
+wx.TreeCtrl.GetFirstChild no longer needs to be passed the cookie
+variable as the 2nd parameter. It still returns it though, for use
+with GetNextChild.
The wx.NO_FULL_REPAINT_ON_RESIZE style is now the default style for
all windows. The name still exists for compatibility, but it is set
The wxWave class has been renamed to wxSound, and now has a slightly
different API.
-wx.TaskbarIcon works on wxGTK-based platforms now, however you have to
-manage it a little bit more than you did before. Basically, the app
-will treat it like a top-level frame in that if the wx.TaskBarIcon
-still exists when all the frames are closed then the app will still
-not exit. You need to ensure that the wx.TaskBarIcon is destroyed
-when your last Frame is closed. For wxPython apps it is usually
-enough if your main frame object holds the only reference to the
-wx.TaskBarIcon, then when the frame is closed Python reference
-counting takes care of the rest.
+wx.TaskbarIcon works on wxGTK-based platforms (for some window
+managers,) however you have to manage it a little bit more than you
+did before. Basically, the app will treat it like a top-level frame
+in that if the wx.TaskBarIcon still exists when all the frames are
+closed then the app will still not exit. You need to ensure that the
+wx.TaskBarIcon is destroyed when your last Frame is closed. For
+wxPython apps it is usually enough if your main frame object holds the
+only reference to the wx.TaskBarIcon, then when the frame is closed
+Python reference counting takes care of the rest.
Before Python 2.3 it was possible to pass a floating point object as a
parameter to a function that expected an integer, and the
integer by truncating the fractional portion of the number. With
Python 2.3 that behavior was deprecated and a deprecation warning is
raised when you pass a floating point value, (for example, calling
-wx.DC.DrawLineXY with floats for the position and size,) and lots of
+wx.DC.DrawLine with floats for the position and size,) and lots of
developers using wxPython had to scramble to change their code to call
int() before calling wxPython methods. Recent changes in SWIG have
moved the conversion out of PyArg_ParseTuple to custom code that SWIG
convert itself to one. A similar conversion fragment is in place for
parameters that expect floating point values.
-**[Changed in 2.5.1.6]** The MaskedEditCtrl modules have been moved
+**[Changed in 2.5.2.x]** The MaskedEditCtrl modules have been moved
to their own sub-package, wx.lib.masked. See the docstrings and demo
for changes in capabilities, usage, etc.
+**[Changed in 2.5.2.x]** wx.MaskColour constructor has been deprecated
+and will raise a DeprecationWarning if used. The main wx.Mask
+constructor has been modified to be compatible with wx.MaskColour so
+you should use it instead.
projects / wxWidgets.git / blobdiff