mirror of https://github.com/python/cpython.git
Minimal text editor using MLTE (code based on wed.py, the waste demo).
It's sort-of starting to work, but there's still problems with redraws and with resizing the window.
This commit is contained in:
Jack Jansen
parent
f0ded2f0bc
commit
177200959b
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# A minimal text editor using MLTE. Based on wed.py.
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#
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# To be done:
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# - Functionality: find, etc.
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from Menu import DrawMenuBar
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from FrameWork import *
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import Win
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import Qd
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import Res
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import Scrap
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import os
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import macfs
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import MacTextEditor
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import Mlte
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UNDOLABELS = [ # Indexed by MLTECanUndo() value
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"Typing", "Cut", "Paste", "Clear", "Font Change", "Color Change", "Size Change",
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"Style Change", "Align Left", "Align Center", "Align Right", "Drop", "Move"]
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class WasteWindow(Window):
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def open(self, path, name, data):
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self.path = path
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self.name = name
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r = windowbounds(400, 400)
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w = Win.NewWindow(r, name, 1, 0, -1, 1, 0x55555555)
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self.wid = w
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## vr = 0, 0, r[2]-r[0]-15, r[3]-r[1]-15
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## dr = (0, 0, 10240, 0)
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## Qd.SetPort(w)
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## Qd.TextFont(4)
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## Qd.TextSize(9)
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## self.ted = waste.WENew(dr, vr, flags)
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flags = MacTextEditor.kTXNDrawGrowIconMask|MacTextEditor.kTXNShowWindowMask|MacTextEditor.kTXNWantHScrollBarMask| \
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MacTextEditor.kTXNWantVScrollBarMask
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self.ted, self.frameid = Mlte.TXNNewObject(None, w, None, flags, MacTextEditor.kTXNTextEditStyleFrameType,
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MacTextEditor.kTXNTextFile, MacTextEditor.kTXNMacOSEncoding)
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## self.tedtexthandle = Res.Resource(data)
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## self.ted.WEUseText(self.tedtexthandle)
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self.ted.TXNSetData(MacTextEditor.kTXNTextData, data, 0, 0x7fffffff)
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## self.ted.WECalText()
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## w.DrawGrowIcon()
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## self.scrollbars()
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self.changed = 0
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self.do_postopen()
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self.do_activate(1, None)
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def do_idle(self, event):
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## (what, message, when, where, modifiers) = event
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## Qd.SetPort(self.wid)
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self.ted.TXNIdle()
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self.ted.TXNAdjustCursor(None)
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## def getscrollbarvalues(self):
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## dr = self.ted.WEGetDestRect()
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## vr = self.ted.WEGetViewRect()
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## vx = self.scalebarvalue(dr[0], dr[2], vr[0], vr[2])
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## vy = self.scalebarvalue(dr[1], dr[3], vr[1], vr[3])
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#### print dr, vr, vx, vy
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## return vx, vy
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##
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## def scrollbar_callback(self, which, what, value):
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## if which == 'y':
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## if what == 'set':
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## height = self.ted.WEGetHeight(0, 0x3fffffff)
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## cur = self.getscrollbarvalues()[1]
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## delta = (cur-value)*height/32767
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## if what == '-':
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## topline_off,dummy = self.ted.WEGetOffset((1,1))
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## topline_num = self.ted.WEOffsetToLine(topline_off)
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## delta = self.ted.WEGetHeight(topline_num, topline_num+1)
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## elif what == '--':
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## delta = (self.ted.WEGetViewRect()[3]-10)
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## if delta <= 0:
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## delta = 10 # Random value
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## elif what == '+':
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## # XXXX Wrong: should be bottom line size
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## topline_off,dummy = self.ted.WEGetOffset((1,1))
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## topline_num = self.ted.WEOffsetToLine(topline_off)
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## delta = -self.ted.WEGetHeight(topline_num, topline_num+1)
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## elif what == '++':
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## delta = -(self.ted.WEGetViewRect()[3]-10)
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## if delta >= 0:
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## delta = -10
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## self.ted.WEScroll(0, delta)
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#### print 'SCROLL Y', delta
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## else:
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## if what == 'set':
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## return # XXXX
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## vr = self.ted.WEGetViewRect()
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## winwidth = vr[2]-vr[0]
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## if what == '-':
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## delta = winwidth/10
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## elif what == '--':
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## delta = winwidth/2
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## elif what == '+':
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## delta = -winwidth/10
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## elif what == '++':
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## delta = -winwidth/2
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## self.ted.WEScroll(delta, 0)
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## # Pin the scroll
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## l, t, r, b = self.ted.WEGetDestRect()
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## vl, vt, vr, vb = self.ted.WEGetViewRect()
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## if t > 0 or l > 0:
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## dx = dy = 0
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## if t > 0: dy = -t
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## if l > 0: dx = -l
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#### print 'Extra scroll', dx, dy
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## self.ted.WEScroll(dx, dy)
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## elif b < vb:
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#### print 'Extra downscroll', b-vb
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## self.ted.WEScroll(0, b-vb)
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def do_activate(self, onoff, evt):
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## print "ACTIVATE", onoff
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Qd.SetPort(self.wid)
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Window.do_activate(self, onoff, evt)
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if onoff:
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self.ted.TXNFocus(1)
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self.parent.active = self
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self.parent.updatemenubar()
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else:
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self.ted.TXNFocus(0)
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def do_update(self, wid, event):
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Qd.SetPort(self.wid)
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## region = wid.GetWindowPort().visRgn
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## if Qd.EmptyRgn(region):
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## return
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## Qd.EraseRgn(region)
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self.ted.TXNUpdate()
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## self.updatescrollbars()
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## def do_postresize(self, width, height, window):
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## l, t, r, b = self.ted.WEGetViewRect()
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## vr = (l, t, l+width-15, t+height-15)
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## self.ted.WESetViewRect(vr)
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## self.wid.InvalWindowRect(vr)
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## ScrolledWindow.do_postresize(self, width, height, window)
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def do_contentclick(self, local, modifiers, evt):
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## (what, message, when, where, modifiers) = evt
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self.ted.TXNClick(evt)
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## self.updatescrollbars()
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self.parent.updatemenubar()
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def do_char(self, ch, event):
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self.ted.TXNKeyDown(event)
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## self.ted.WESelView()
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## (what, message, when, where, modifiers) = event
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## self.ted.WEKey(ord(ch), modifiers)
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## self.changed = 1
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## self.updatescrollbars()
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## self.parent.updatemenubar()
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def close(self):
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if self.changed:
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save = EasyDialogs.AskYesNoCancel('Save window "%s" before closing?'%self.name, 1)
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if save > 0:
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self.menu_save()
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elif save < 0:
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return
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if self.parent.active == self:
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self.parent.active = None
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## self.parent.updatemenubar()
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del self.ted
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## del self.tedtexthandle
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self.do_postclose()
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def menu_save(self):
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if not self.path:
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self.menu_save_as()
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return # Will call us recursively
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print 'Saving to ', self.path
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dhandle = self.ted.TXNGetData(0, 0x7fffffff)
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data = dhandle.data
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fp = open(self.path, 'wb') # NOTE: wb, because data has CR for end-of-line
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fp.write(data)
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if data[-1] <> '\r': fp.write('\r')
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fp.close()
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self.changed = 0
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def menu_save_as(self):
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fss, ok = macfs.StandardPutFile('Save as:')
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if not ok: return
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self.path = fss.as_pathname()
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self.name = os.path.split(self.path)[-1]
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self.wid.SetWTitle(self.name)
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self.menu_save()
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def menu_cut(self):
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## self.ted.WESelView()
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self.ted.TXNCut()
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### Mlte.ConvertToPublicScrap()
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## Scrap.ZeroScrap()
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## self.ted.WECut()
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## self.updatescrollbars()
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self.parent.updatemenubar()
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self.changed = 1
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def menu_copy(self):
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## Scrap.ZeroScrap()
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self.ted.TXNCopy()
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### Mlte.ConvertToPublicScrap()
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## self.updatescrollbars()
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self.parent.updatemenubar()
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def menu_paste(self):
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### Mlte.ConvertFromPublicScrap()
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self.ted.TXNPaste()
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## self.updatescrollbars()
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self.parent.updatemenubar()
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self.changed = 1
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def menu_clear(self):
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## self.ted.WESelView()
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self.ted.TXNClear()
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## self.updatescrollbars()
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self.parent.updatemenubar()
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self.changed = 1
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def menu_undo(self):
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self.ted.TXNUndo()
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## self.updatescrollbars()
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self.parent.updatemenubar()
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def menu_redo(self):
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self.ted.TXNRedo()
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## self.updatescrollbars()
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self.parent.updatemenubar()
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def have_selection(self):
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start, stop = self.ted.TXNGetSelection()
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return start < stop
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def can_paste(self):
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return Mlte.TXNIsScrapPastable()
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def can_undo(self):
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can, which = self.ted.TXNCanUndo()
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if not can:
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return None
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if which >= len(UNDOLABELS):
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# Unspecified undo
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return "Undo"
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which = UNDOLABELS[which]
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return "Undo "+which
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def can_redo(self):
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can, which = self.ted.TXNCanRedo()
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if not can:
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return None
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if which >= len(UNDOLABELS):
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# Unspecified undo
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return "Redo"
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which = UNDOLABELS[which]
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return "Redo "+which
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class Mlted(Application):
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def __init__(self):
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Application.__init__(self)
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self.num = 0
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self.active = None
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self.updatemenubar()
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def makeusermenus(self):
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self.filemenu = m = Menu(self.menubar, "File")
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self.newitem = MenuItem(m, "New window", "N", self.open)
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self.openitem = MenuItem(m, "Open...", "O", self.openfile)
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self.closeitem = MenuItem(m, "Close", "W", self.closewin)
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m.addseparator()
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self.saveitem = MenuItem(m, "Save", "S", self.save)
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self.saveasitem = MenuItem(m, "Save as...", "", self.saveas)
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m.addseparator()
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self.quititem = MenuItem(m, "Quit", "Q", self.quit)
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self.editmenu = m = Menu(self.menubar, "Edit")
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self.undoitem = MenuItem(m, "Undo", "Z", self.undo)
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self.redoitem = MenuItem(m, "Undo", None, self.redo)
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self.cutitem = MenuItem(m, "Cut", "X", self.cut)
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self.copyitem = MenuItem(m, "Copy", "C", self.copy)
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self.pasteitem = MenuItem(m, "Paste", "V", self.paste)
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self.clearitem = MenuItem(m, "Clear", "", self.clear)
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# Groups of items enabled together:
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self.windowgroup = [self.closeitem, self.saveitem, self.saveasitem, self.editmenu]
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self.focusgroup = [self.cutitem, self.copyitem, self.clearitem]
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self.windowgroup_on = -1
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self.focusgroup_on = -1
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self.pastegroup_on = -1
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self.undo_label = "never"
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self.redo_label = "never"
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def updatemenubar(self):
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changed = 0
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on = (self.active <> None)
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if on <> self.windowgroup_on:
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for m in self.windowgroup:
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m.enable(on)
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self.windowgroup_on = on
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changed = 1
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if on:
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# only if we have an edit menu
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on = self.active.have_selection()
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if on <> self.focusgroup_on:
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for m in self.focusgroup:
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m.enable(on)
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self.focusgroup_on = on
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changed = 1
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on = self.active.can_paste()
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if on <> self.pastegroup_on:
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self.pasteitem.enable(on)
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self.pastegroup_on = on
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changed = 1
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on = self.active.can_undo()
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if on <> self.undo_label:
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if on:
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self.undoitem.enable(1)
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self.undoitem.settext(on)
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self.undo_label = on
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else:
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self.undoitem.settext("Nothing to undo")
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self.undoitem.enable(0)
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changed = 1
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on = self.active.can_redo()
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if on <> self.redo_label:
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if on:
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self.redoitem.enable(1)
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self.redoitem.settext(on)
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self.redo_label = on
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else:
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self.redoitem.settext("Nothing to redo")
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self.redoitem.enable(0)
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changed = 1
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if changed:
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DrawMenuBar()
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#
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# Apple menu
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#
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def do_about(self, id, item, window, event):
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EasyDialogs.Message("A simple single-font text editor based on MacTextEditor")
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#
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# File menu
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#
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def open(self, *args):
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self._open(0)
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def openfile(self, *args):
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self._open(1)
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def _open(self, askfile):
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if askfile:
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fss, ok = macfs.StandardGetFile('TEXT')
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if not ok:
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return
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path = fss.as_pathname()
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name = os.path.split(path)[-1]
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try:
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fp = open(path, 'rb') # NOTE binary, we need cr as end-of-line
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data = fp.read()
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fp.close()
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except IOError, arg:
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EasyDialogs.Message("IOERROR: "+`arg`)
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return
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else:
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path = None
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name = "Untitled %d"%self.num
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data = ''
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w = WasteWindow(self)
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w.open(path, name, data)
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self.num = self.num + 1
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def closewin(self, *args):
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if self.active:
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self.active.close()
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else:
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EasyDialogs.Message("No active window?")
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def save(self, *args):
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if self.active:
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self.active.menu_save()
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else:
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EasyDialogs.Message("No active window?")
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def saveas(self, *args):
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if self.active:
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self.active.menu_save_as()
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else:
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EasyDialogs.Message("No active window?")
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def quit(self, *args):
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for w in self._windows.values():
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w.close()
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if self._windows:
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return
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self._quit()
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#
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# Edit menu
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#
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def undo(self, *args):
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if self.active:
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self.active.menu_undo()
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else:
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EasyDialogs.Message("No active window?")
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def redo(self, *args):
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if self.active:
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self.active.menu_redo()
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else:
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EasyDialogs.Message("No active window?")
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def cut(self, *args):
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if self.active:
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self.active.menu_cut()
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else:
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EasyDialogs.Message("No active window?")
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def copy(self, *args):
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if self.active:
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self.active.menu_copy()
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else:
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EasyDialogs.Message("No active window?")
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def paste(self, *args):
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if self.active:
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self.active.menu_paste()
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else:
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EasyDialogs.Message("No active window?")
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def clear(self, *args):
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if self.active:
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self.active.menu_clear()
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else:
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EasyDialogs.Message("No active window?")
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#
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# Other stuff
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#
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def idle(self, event):
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if self.active:
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self.active.do_idle(event)
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def main():
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Mlte.TXNInitTextension(0)
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try:
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App = Mlted()
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App.mainloop()
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finally:
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Mlte.TXNTerminateTextension()
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if __name__ == '__main__':
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main()
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