wxPython/demo/StyledTextCtrl_1.py

   1 #
   2 # 11/21/2003 - Jeff Grimmett (grimmtooth@softhome.net)
   3 #
   4 # o wx.TheClipboard.Flush() generates a warning on program exit.
   5 #
   6
   7 import  wx
   8 import  wx.stc  as  stc
   9
  10 import  images
  11
  12 #----------------------------------------------------------------------
  13
  14 debug = 1
  15
  16
  17 demoText = """\
  18 This editor is provided by a class named wx.StyledTextCtrl.  As
  19 the name suggests, you can define styles that can be applied to
  20 sections of text.  This will typically be used for things like
  21 syntax highlighting code editors, but I'm sure that there are other
  22 applications as well.  A style is a combination of font, point size,
  23 foreground and background colours.  The editor can handle
  24 proportional fonts just as easily as monospaced fonts, and various
  25 styles can use different sized fonts.
  26
  27 There are a few canned language lexers and colourizers included,
  28 (see the next demo) or you can handle the colourization yourself.
  29 If you do you can simply register an event handler and the editor
  30 will let you know when the visible portion of the text needs
  31 styling.
  32
  33 wx.StyledTextEditor also supports setting markers in the margin...
  34
  35
  36
  37
  38 ...and indicators within the text.  You can use these for whatever
  39 you want in your application.  Cut, Copy, Paste, Drag and Drop of
  40 text works, as well as virtually unlimited Undo and Redo
  41 capabilities, (right click to try it out.)
  42 """
  43
  44 if wx.Platform == '__WXMSW__':
  45     face1 = 'Arial'
  46     face2 = 'Times New Roman'
  47     face3 = 'Courier New'
  48     pb = 10
  49 else:
  50     face1 = 'Helvetica'
  51     face2 = 'Times'
  52     face3 = 'Courier'
  53     pb = 10
  54
  55
  56 #----------------------------------------------------------------------
  57 # This shows how to catch the Modified event from the wx.StyledTextCtrl
  58
  59 class MySTC(stc.StyledTextCtrl):
  60     def __init__(self, parent, ID, log):
  61         stc.StyledTextCtrl.__init__(self, parent, ID)
  62         self.log = log
  63
  64         self.Bind(stc.EVT_STC_DO_DROP, self.OnDoDrop)
  65         self.Bind(stc.EVT_STC_DRAG_OVER, self.OnDragOver)
  66         self.Bind(stc.EVT_STC_START_DRAG, self.OnStartDrag)
  67         self.Bind(stc.EVT_STC_MODIFIED, self.OnModified)
  68
  69         self.Bind(wx.EVT_WINDOW_DESTROY, self.OnDestroy)
  70
  71     def OnDestroy(self, evt):
  72         # This is how the clipboard contents can be preserved after
  73         # the app has exited.
  74         wx.TheClipboard.Flush()
  75         evt.Skip()
  76
  77
  78     def OnStartDrag(self, evt):
  79         self.log.write("OnStartDrag: %d, %s\n"
  80                        % (evt.GetDragAllowMove(), evt.GetDragText()))
  81
  82         if debug and evt.GetPosition() < 250:
  83             evt.SetDragAllowMove(False)     # you can prevent moving of text (only copy)
  84             evt.SetDragText("DRAGGED TEXT") # you can change what is dragged
  85             #evt.SetDragText("")             # or prevent the drag with empty text
  86
  87
  88     def OnDragOver(self, evt):
  89         self.log.write(
  90             "OnDragOver: x,y=(%d, %d)  pos: %d  DragResult: %d\n"
  91             % (evt.GetX(), evt.GetY(), evt.GetPosition(), evt.GetDragResult())
  92             )
  93
  94         if debug and evt.GetPosition() < 250:
  95             evt.SetDragResult(wx.DragNone)   # prevent dropping at the beginning of the buffer
  96
  97
  98     def OnDoDrop(self, evt):
  99         self.log.write("OnDoDrop: x,y=(%d, %d)  pos: %d  DragResult: %d\n"
 100                        "\ttext: %s\n"
 101                        % (evt.GetX(), evt.GetY(), evt.GetPosition(), evt.GetDragResult(),
 102                           evt.GetDragText()))
 103
 104         if debug and evt.GetPosition() < 500:
 105             evt.SetDragText("DROPPED TEXT")  # Can change text if needed
 106             #evt.SetDragResult(wx.DragNone)  # Can also change the drag operation, but it
 107                                              # is probably better to do it in OnDragOver so
 108                                              # there is visual feedback
 109
 110             #evt.SetPosition(25)             # Can also change position, but I'm not sure why
 111                                              # you would want to...
 112
 113
 114
 115
 116     def OnModified(self, evt):
 117         self.log.write("""OnModified
 118         Mod type:     %s
 119         At position:  %d
 120         Lines added:  %d
 121         Text Length:  %d
 122         Text:         %s\n""" % ( self.transModType(evt.GetModificationType()),
 123                                   evt.GetPosition(),
 124                                   evt.GetLinesAdded(),
 125                                   evt.GetLength(),
 126                                   repr(evt.GetText()) ))
 127
 128
 129     def transModType(self, modType):
 130         st = ""
 131         table = [(stc.STC_MOD_INSERTTEXT, "InsertText"),
 132                  (stc.STC_MOD_DELETETEXT, "DeleteText"),
 133                  (stc.STC_MOD_CHANGESTYLE, "ChangeStyle"),
 134                  (stc.STC_MOD_CHANGEFOLD, "ChangeFold"),
 135                  (stc.STC_PERFORMED_USER, "UserFlag"),
 136                  (stc.STC_PERFORMED_UNDO, "Undo"),
 137                  (stc.STC_PERFORMED_REDO, "Redo"),
 138                  (stc.STC_LASTSTEPINUNDOREDO, "Last-Undo/Redo"),
 139                  (stc.STC_MOD_CHANGEMARKER, "ChangeMarker"),
 140                  (stc.STC_MOD_BEFOREINSERT, "B4-Insert"),
 141                  (stc.STC_MOD_BEFOREDELETE, "B4-Delete")
 142                  ]
 143
 144         for flag,text in table:
 145             if flag & modType:
 146                 st = st + text + " "
 147
 148         if not st:
 149             st = 'UNKNOWN'
 150
 151         return st
 152
 153
 154
 155
 156 #----------------------------------------------------------------------
 157
 158 _USE_PANEL = 1
 159
 160 def runTest(frame, nb, log):
 161     if not _USE_PANEL:
 162         ed = p = MySTC(nb, -1, log)
 163
 164     else:
 165         p = wx.Panel(nb, -1, style=wx.NO_FULL_REPAINT_ON_RESIZE)
 166         ed = MySTC(p, -1, log)
 167         s = wx.BoxSizer(wx.HORIZONTAL)
 168         s.Add(ed, 1, wx.EXPAND)
 169         p.SetSizer(s)
 170         p.SetAutoLayout(True)
 171
 172
 173     #ed.SetBufferedDraw(False)
 174     #ed.StyleClearAll()
 175     #ed.SetScrollWidth(800)
 176     #ed.SetWrapMode(True)
 177     #ed.SetUseAntiAliasing(False)
 178     #ed.SetViewEOL(True)
 179
 180     ed.SetText(demoText)
 181
 182     if wx.USE_UNICODE:
 183         import codecs
 184         decode = codecs.lookup("utf-8")[1]
 185
 186         ed.GotoPos(ed.GetLength())
 187         ed.AddText("\n\nwx.StyledTextCtrl can also do Unicode:\n")
 188         unitext, l = decode('\xd0\x9f\xd0\xb8\xd1\x82\xd0\xbe\xd0\xbd - '
 189                             '\xd0\xbb\xd1\x83\xd1\x87\xd1\x88\xd0\xb8\xd0\xb9 '
 190                             '\xd1\x8f\xd0\xb7\xd1\x8b\xd0\xba \xd0\xbf\xd1\x80\xd0\xbe\xd0\xb3\xd1\x80\xd0\xb0\xd0\xbc\xd0\xbc\xd0\xb8\xd1\x80\xd0\xbe\xd0\xb2\xd0\xb0\xd0\xbd\xd0\xb8\xd1\x8f!\n\n')
 191         ed.AddText('\tRussian: ')
 192         ed.AddText(unitext)
 193         ed.GotoPos(0)
 194
 195     ed.EmptyUndoBuffer()
 196
 197     # make some styles
 198     ed.StyleSetSpec(stc.STC_STYLE_DEFAULT, "size:%d,face:%s" % (pb, face3))
 199     ed.StyleSetSpec(1, "size:%d,bold,face:%s,fore:#0000FF" % (pb+2, face1))
 200     ed.StyleSetSpec(2, "face:%s,italic,fore:#FF0000,size:%d" % (face2, pb))
 201     ed.StyleSetSpec(3, "face:%s,bold,size:%d" % (face2, pb+2))
 202     ed.StyleSetSpec(4, "face:%s,size:%d" % (face1, pb-1))
 203
 204     # Now set some text to those styles...  Normally this would be
 205     # done in an event handler that happens when text needs displayed.
 206     ed.StartStyling(98, 0xff)
 207     ed.SetStyling(6, 1)  # set style for 6 characters using style 1
 208
 209     ed.StartStyling(190, 0xff)
 210     ed.SetStyling(20, 2)
 211
 212     ed.StartStyling(310, 0xff)
 213     ed.SetStyling(4, 3)
 214     ed.SetStyling(2, 0)
 215     ed.SetStyling(10, 4)
 216
 217
 218     # line numbers in the margin
 219     ed.SetMarginType(0, stc.STC_MARGIN_NUMBER)
 220     ed.SetMarginWidth(0, 22)
 221     ed.StyleSetSpec(stc.STC_STYLE_LINENUMBER, "size:%d,face:%s" % (pb, face1))
 222
 223     # setup some markers
 224     ed.SetMarginType(1, stc.STC_MARGIN_SYMBOL)
 225     ed.MarkerDefine(0, stc.STC_MARK_ROUNDRECT, "#CCFF00", "RED")
 226     #ed.MarkerDefine(1, stc.STC_MARK_CIRCLE, "FOREST GREEN", "SIENNA")
 227     ed.MarkerDefineBitmap(1, images.getFolder1Bitmap())
 228     ed.MarkerDefine(2, stc.STC_MARK_SHORTARROW, "blue", "blue")
 229     ed.MarkerDefine(3, stc.STC_MARK_ARROW, "#00FF00", "#00FF00")
 230
 231     # put some markers on some lines
 232     ed.MarkerAdd(17, 0)
 233     ed.MarkerAdd(18, 1)
 234     ed.MarkerAdd(19, 2)
 235     ed.MarkerAdd(20, 3)
 236     ed.MarkerAdd(20, 0)
 237
 238
 239     # and finally, an indicator or two
 240     ed.IndicatorSetStyle(0, stc.STC_INDIC_SQUIGGLE)
 241     ed.IndicatorSetForeground(0, wx.RED)
 242     ed.IndicatorSetStyle(1, stc.STC_INDIC_DIAGONAL)
 243     ed.IndicatorSetForeground(1, wx.BLUE)
 244     ed.IndicatorSetStyle(2, stc.STC_INDIC_STRIKE)
 245     ed.IndicatorSetForeground(2, wx.RED)
 246
 247     ed.StartStyling(836, stc.STC_INDICS_MASK)
 248     ed.SetStyling(10, stc.STC_INDIC0_MASK)
 249     ed.SetStyling(10, stc.STC_INDIC1_MASK)
 250     ed.SetStyling(10, stc.STC_INDIC2_MASK | stc.STC_INDIC1_MASK)
 251
 252
 253     # some test stuff...
 254     if debug:
 255         print "GetTextLength(): ", ed.GetTextLength(), len(ed.GetText())
 256         print "GetText(): ", repr(ed.GetText())
 257         print
 258         print "GetStyledText(98, 104): ", repr(ed.GetStyledText(98, 104)), len(ed.GetStyledText(98, 104))
 259         print
 260         print "GetCurLine(): ", repr(ed.GetCurLine())
 261         ed.GotoPos(5)
 262         print "GetCurLine(): ", repr(ed.GetCurLine())
 263         print
 264         print "GetLine(1): ", repr(ed.GetLine(1))
 265         print
 266         ed.SetSelection(25, 35)
 267         print "GetSelectedText(): ", repr(ed.GetSelectedText())
 268         print "GetTextRange(25, 35): ", repr(ed.GetTextRange(25, 35))
 269         print "FindText(0, max, 'indicators'): ",
 270         print ed.FindText(0, ed.GetTextLength(), "indicators")
 271
 272     wx.CallAfter(ed.GotoPos, 0)
 273     return p
 274
 275
 276
 277 #----------------------------------------------------------------------
 278
 279
 280 overview = """\
 281 <html><body>
 282 Once again, no docs yet.  <b>Sorry.</b>  But <a href="data/stc.h.html">this</a>
 283 and <a href="http://www.scintilla.org/ScintillaDoc.html">this</a> should
 284 be helpful.
 285 </body><html>
 286 """
 287
 288
 289 if __name__ == '__main__':
 290     import sys,os
 291     import run
 292     run.main(['', os.path.basename(sys.argv[0])] + sys.argv[1:])
 293