wxPython/demo/wxStyledTextCtrl_1.py

   1
   2 from wxPython.wx import *
   3 from wxPython.stc import *
   4
   5 #----------------------------------------------------------------------
   6
   7 debug = 1
   8
   9
  10 demoText = """\
  11
  12 This editor is provided by a class named wxStyledTextCtrl.  As
  13 the name suggests, you can define styles that can be applied to
  14 sections of text.  This will typically be used for things like
  15 syntax highlighting code editors, but I'm sure that there are other
  16 applications as well.  A style is a combination of font, point size,
  17 forground and background colours.  The editor can handle
  18 proportional fonts just as easily as monospaced fonts, and various
  19 styles can use different sized fonts.
  20
  21 There are a few canned language lexers and colourizers included,
  22 (see the next demo) or you can handle the colourization yourself.
  23 If you do you can simply register an event handler and the editor
  24 will let you know when the visible portion of the text needs
  25 styling.
  26
  27 wxStyledTextEditor also supports setting markers in the margin...
  28
  29
  30
  31
  32 ...and indicators within the text.  You can use these for whatever
  33 you want in your application.  Cut, Copy, Paste, Drag and Drop of
  34 text works, as well as virtually unlimited Undo and Redo
  35 capabilities, (right click to try it out.)
  36 """
  37
  38 if wxPlatform == '__WXMSW__':
  39     face1 = 'Arial'
  40     face2 = 'Times New Roman'
  41     face3 = 'Courier New'
  42     pb = 10
  43 else:
  44     face1 = 'Helvetica'
  45     face2 = 'Times'
  46     face3 = 'Courier'
  47     pb = 10
  48
  49
  50 #----------------------------------------------------------------------
  51 # This shows how to catch the Modified event from the wxStyledTextCtrl
  52
  53 class MySTC(wxStyledTextCtrl):
  54     def __init__(self, parent, ID, log):
  55         wxStyledTextCtrl.__init__(self, parent, ID)
  56         self.log = log
  57
  58         EVT_STC_DO_DROP(self, ID, self.OnDoDrop)
  59         EVT_STC_DRAG_OVER(self, ID, self.OnDragOver)
  60         EVT_STC_START_DRAG(self, ID, self.OnStartDrag)
  61         EVT_STC_MODIFIED(self, ID, self.OnModified)
  62
  63         EVT_WINDOW_DESTROY(self, self.OnDestroy)
  64
  65     def OnDestroy(self, evt):
  66         # This is how the clipboard contents can be preserved after
  67         # the app has exited.
  68         wxTheClipboard.Flush()
  69         evt.Skip()
  70
  71
  72     def OnStartDrag(self, evt):
  73         self.log.write("OnStartDrag: %d, %s\n"
  74                        % (evt.GetDragAllowMove(), evt.GetDragText()))
  75
  76         if debug and evt.GetPosition() < 250:
  77             evt.SetDragAllowMove(False)     # you can prevent moving of text (only copy)
  78             evt.SetDragText("DRAGGED TEXT") # you can change what is dragged
  79             #evt.SetDragText("")             # or prevent the drag with empty text
  80
  81
  82     def OnDragOver(self, evt):
  83         self.log.write("OnDragOver: x,y=(%d, %d)  pos: %d  DragResult: %d\n"
  84                        % (evt.GetX(), evt.GetY(), evt.GetPosition(), evt.GetDragResult()))
  85
  86         if debug and evt.GetPosition() < 250:
  87             evt.SetDragResult(wxDragNone)   # prevent dropping at the begining of the buffer
  88
  89
  90     def OnDoDrop(self, evt):
  91         self.log.write("OnDoDrop: x,y=(%d, %d)  pos: %d  DragResult: %d\n"
  92                        "\ttext: %s\n"
  93                        % (evt.GetX(), evt.GetY(), evt.GetPosition(), evt.GetDragResult(),
  94                           evt.GetDragText()))
  95
  96         if debug and evt.GetPosition() < 500:
  97             evt.SetDragText("DROPPED TEXT")  # Can change text if needed
  98             ##evt.SetDragResult(wxDragNone)  # Can also change the drag operation, but it
  99                                              # is probably better to do it in OnDragOver so
 100                                              # there is visual feedback
 101
 102             ##evt.SetPosition(25)            # Can also change position, but I'm not sure why
 103                                              # you would want to...
 104
 105
 106
 107
 108     def OnModified(self, evt):
 109         self.log.write("""OnModified
 110         Mod type:     %s
 111         At position:  %d
 112         Lines added:  %d
 113         Text Length:  %d
 114         Text:         %s\n""" % ( self.transModType(evt.GetModificationType()),
 115                                   evt.GetPosition(),
 116                                   evt.GetLinesAdded(),
 117                                   evt.GetLength(),
 118                                   repr(evt.GetText()) ))
 119
 120
 121     def transModType(self, modType):
 122         st = ""
 123         table = [(wxSTC_MOD_INSERTTEXT, "InsertText"),
 124                  (wxSTC_MOD_DELETETEXT, "DeleteText"),
 125                  (wxSTC_MOD_CHANGESTYLE, "ChangeStyle"),
 126                  (wxSTC_MOD_CHANGEFOLD, "ChangeFold"),
 127                  (wxSTC_PERFORMED_USER, "UserFlag"),
 128                  (wxSTC_PERFORMED_UNDO, "Undo"),
 129                  (wxSTC_PERFORMED_REDO, "Redo"),
 130                  (wxSTC_LASTSTEPINUNDOREDO, "Last-Undo/Redo"),
 131                  (wxSTC_MOD_CHANGEMARKER, "ChangeMarker"),
 132                  (wxSTC_MOD_BEFOREINSERT, "B4-Insert"),
 133                  (wxSTC_MOD_BEFOREDELETE, "B4-Delete")
 134                  ]
 135
 136         for flag,text in table:
 137             if flag & modType:
 138                 st = st + text + " "
 139
 140         if not st:
 141             st = 'UNKNOWN'
 142
 143         return st
 144
 145
 146
 147
 148 #----------------------------------------------------------------------
 149
 150 _USE_PANEL = 1
 151
 152 def runTest(frame, nb, log):
 153     if not _USE_PANEL:
 154         ed = p = MySTC(nb, -1, log)
 155
 156     else:
 157         p = wxPanel(nb, -1, style=wxNO_FULL_REPAINT_ON_RESIZE)
 158         ed = MySTC(p, -1, log)
 159         s = wxBoxSizer(wxHORIZONTAL)
 160         s.Add(ed, 1, wxEXPAND)
 161         p.SetSizer(s)
 162         p.SetAutoLayout(True)
 163
 164
 165     #ed.SetBufferedDraw(False)
 166     #ed.StyleClearAll()
 167     #ed.SetScrollWidth(800)
 168     #ed.SetWrapMode(True)
 169
 170     ed.SetText(demoText)
 171     if wxUSE_UNICODE:
 172         import codecs
 173         decode = codecs.lookup("utf-8")[1]
 174
 175         ed.GotoPos(ed.GetLength())
 176         ed.AddText("\n\nwxStyledTextCtrl can also do Unicode:\n")
 177         unitext, l = decode('\xd0\x9f\xd0\xb8\xd1\x82\xd0\xbe\xd0\xbd - '
 178                             '\xd0\xbb\xd1\x83\xd1\x87\xd1\x88\xd0\xb8\xd0\xb9 '
 179                             '\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')
 180         ed.AddText('\tRussian: ')
 181         ed.AddText(unitext)
 182         ed.GotoPos(0)
 183
 184     ed.EmptyUndoBuffer()
 185
 186     # make some styles
 187     ed.StyleSetSpec(wxSTC_STYLE_DEFAULT, "size:%d,face:%s" % (pb, face3))
 188     ed.StyleSetSpec(1, "size:%d,bold,face:%s,fore:#0000FF" % (pb+2, face1))
 189     ed.StyleSetSpec(2, "face:%s,italic,fore:#FF0000,size:%d" % (face2, pb))
 190     ed.StyleSetSpec(3, "face:%s,bold,size:%d" % (face2, pb+2))
 191     ed.StyleSetSpec(4, "face:%s,size:%d" % (face1, pb-1))
 192
 193     # Now set some text to those styles...  Normally this would be
 194     # done in an event handler that happens when text needs displayed.
 195     ed.StartStyling(98, 0xff)
 196     ed.SetStyling(6, 1)  # set style for 6 characters using style 1
 197
 198     ed.StartStyling(190, 0xff)
 199     ed.SetStyling(20, 2)
 200
 201     ed.StartStyling(310, 0xff)
 202     ed.SetStyling(4, 3)
 203     ed.SetStyling(2, 0)
 204     ed.SetStyling(10, 4)
 205
 206
 207     # line numbers in the margin
 208     ed.SetMarginType(0, wxSTC_MARGIN_NUMBER)
 209     ed.SetMarginWidth(0, 22)
 210     ed.StyleSetSpec(wxSTC_STYLE_LINENUMBER, "size:%d,face:%s" % (pb, face1))
 211
 212     # setup some markers
 213     ed.SetMarginType(1, wxSTC_MARGIN_SYMBOL)
 214     ed.MarkerDefine(0, wxSTC_MARK_ROUNDRECT, "#CCFF00", "RED")
 215     ed.MarkerDefine(1, wxSTC_MARK_CIRCLE, "FOREST GREEN", "SIENNA")
 216     ed.MarkerDefine(2, wxSTC_MARK_SHORTARROW, "blue", "blue")
 217     ed.MarkerDefine(3, wxSTC_MARK_ARROW, "#00FF00", "#00FF00")
 218
 219     # put some markers on some lines
 220     ed.MarkerAdd(17, 0)
 221     ed.MarkerAdd(18, 1)
 222     ed.MarkerAdd(19, 2)
 223     ed.MarkerAdd(20, 3)
 224     ed.MarkerAdd(20, 0)
 225
 226
 227     # and finally, an indicator or two
 228     ed.IndicatorSetStyle(0, wxSTC_INDIC_SQUIGGLE)
 229     ed.IndicatorSetForeground(0, wxRED)
 230     ed.IndicatorSetStyle(1, wxSTC_INDIC_DIAGONAL)
 231     ed.IndicatorSetForeground(1, wxBLUE)
 232     ed.IndicatorSetStyle(2, wxSTC_INDIC_STRIKE)
 233     ed.IndicatorSetForeground(2, wxRED)
 234
 235     ed.StartStyling(836, wxSTC_INDICS_MASK)
 236     ed.SetStyling(10, wxSTC_INDIC0_MASK)
 237     ed.SetStyling(10, wxSTC_INDIC1_MASK)
 238     ed.SetStyling(10, wxSTC_INDIC2_MASK | wxSTC_INDIC1_MASK)
 239
 240
 241     # some test stuff...
 242     if debug:
 243         print "GetTextLength(): ", ed.GetTextLength(), len(ed.GetText())
 244         print "GetText(): ", repr(ed.GetText())
 245         print
 246         print "GetStyledText(98, 104): ", repr(ed.GetStyledText(98, 104)), len(ed.GetStyledText(98, 104))
 247         print
 248         print "GetCurLine(): ", repr(ed.GetCurLine())
 249         ed.GotoPos(5)
 250         print "GetCurLine(): ", repr(ed.GetCurLine())
 251         print
 252         print "GetLine(1): ", repr(ed.GetLine(1))
 253         print
 254         ed.SetSelection(25, 35)
 255         print "GetSelectedText(): ", repr(ed.GetSelectedText())
 256         print "GetTextRange(25, 35): ", repr(ed.GetTextRange(25, 35))
 257         print "FindText(0, max, 'indicators'): ",
 258         print ed.FindText(0, ed.GetTextLength(), "indicators")
 259
 260         ed.GotoPos(0)
 261
 262
 263     return p
 264
 265
 266
 267 #----------------------------------------------------------------------
 268
 269
 270 overview = """\
 271 <html><body>
 272 Once again, no docs yet.  <b>Sorry.</b>  But <a href="data/stc.h.html">this</a>
 273 and <a href="http://www.scintilla.org/ScintillaDoc.html">this</a> should
 274 be helpful.
 275 </body><html>
 276 """
 277
 278
 279 if __name__ == '__main__':
 280     import sys,os
 281     import run
 282     run.main(['', os.path.basename(sys.argv[0])])
 283