Amebis/wxWidgets
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Alpha is supported on GTK2 now!

Browse Source 
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@28920 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Robin Dunn
2004-08-26 03:03:16 +00:00
parent 73b79b9938
commit f1fabff5b2
1 changed files with 16 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
wxPython/demo/ImageAlpha.py
View File

@@ -5,7 +5,7 @@ from Main import opj
#---------------------------------------------------------------------- #----------------------------------------------------------------------
msg = "Some text will appear in the image's shadow..." msg = "Some text will appear mixed in the image's shadow..."
class TestPanel(wx.Panel): class TestPanel(wx.Panel):
def __init__(self, parent, log): def __init__(self, parent, log):
@@ -21,16 +21,27 @@ class TestPanel(wx.Panel):
dc.Clear() dc.Clear()
dc.SetFont(wx.Font(16, wx.SWISS, wx.NORMAL, wx.BOLD, True)) dc.SetFont(wx.Font(16, wx.SWISS, wx.NORMAL, wx.BOLD, True))
dc.DrawText("Bitmap alpha blending (on wxMSW and wxMac only)", dc.DrawText("Bitmap alpha blending (on all ports but gtk+ 1.2)",
25,25) 25,25)
bmp = wx.Bitmap(opj('bitmaps/toucan.png')) bmp = wx.Bitmap(opj('bitmaps/toucan.png'))
if "__WXGTK__" in wx.PlatformInfo: if "gtk1" in wx.PlatformInfo:
# try to make up for lack of alpha support a bit... # Try to make up for lack of alpha support in wxGTK (gtk+
# 1.2) by converting the alpha blending into a
# transparency mask.
# first convert to a wx.Image
img = bmp.ConvertToImage() img = bmp.ConvertToImage()
img.ConvertAlphaToMask(220) #threshold below which alpha will be made fully transparent
# Then convert the alpha channel to a mask, specifying the
# threshold below which alpha will be made fully
# transparent
img.ConvertAlphaToMask(220)
# convert back to a wx.Bitmap
bmp = img.ConvertToBitmap() bmp = img.ConvertToBitmap()
dc.DrawBitmap(bmp, 25,100, True) dc.DrawBitmap(bmp, 25,100, True)
dc.SetFont(self.GetFont()) dc.SetFont(self.GetFont())