X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/cb8f28ba1e40dc9f7b847ad2431c5e9be5125d3a..5f6cfda79ff6d1ddc0b1b88c0ba9a69c4dd1f3f3:/wxPython/docs/MigrationGuide.txt diff --git a/wxPython/docs/MigrationGuide.txt b/wxPython/docs/MigrationGuide.txt index d2f34ac2b1..4f8bd7bed5 100644 --- a/wxPython/docs/MigrationGuide.txt +++ b/wxPython/docs/MigrationGuide.txt @@ -3,10 +3,10 @@ wxPython 2.5 Migration Guide ============================ 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 @@ -20,8 +20,8 @@ The **wxWindows** project and library is now known as .. _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. @@ -52,6 +52,12 @@ Also, you will probably not be able to do any kind of GUI or bitmap 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 @@ -170,7 +176,7 @@ Change it like so:: 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 2.5.2.0]** There is also an Unbind method added to +**[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:: @@ -251,7 +257,7 @@ just fine. New wx.DC Methods ----------------- -**[Changed in 2.5.2.0]** In wxPython 2.5.1.5 there was a new +**[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 @@ -417,11 +423,11 @@ be used from XRC. 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. **[Changed in 2.5.2.0]** +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 2.5.2.0]** 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 GetMinSize and/or GetBestSize will be called when calculating layout and the return value from that will be used for the minimum size used @@ -585,6 +591,85 @@ provided by the makers of the ActiveX control that you are using. + +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 ---------------- @@ -706,11 +791,11 @@ If the object is not already an integer then it will be asked to convert itself to one. A similar conversion fragment is in place for parameters that expect floating point values. -**[Changed in 2.5.2.0]** 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 2.5.2.0]** wx.MaskColour constructor has been deprecated +**[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.