[Python-checkins] CVS: python/dist/src/Mac/Demo/mlte mlted.py,NONE,1.1
Jack Jansen
jackjansen@users.sourceforge.net
Sat, 14 Jul 2001 07:02:23 -0700
Update of /cvsroot/python/python/dist/src/Mac/Demo/mlte
In directory usw-pr-cvs1:/tmp/cvs-serv18647/Python/Mac/Demo/mlte
Added Files:
mlted.py
Log Message:
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.
--- NEW FILE: mlted.py ---
# A minimal text editor using MLTE. Based on wed.py.
#
# To be done:
# - Functionality: find, etc.
from Menu import DrawMenuBar
from FrameWork import *
import Win
import Qd
import Res
import Scrap
import os
import macfs
import MacTextEditor
import Mlte
UNDOLABELS = [ # Indexed by MLTECanUndo() value
"Typing", "Cut", "Paste", "Clear", "Font Change", "Color Change", "Size Change",
"Style Change", "Align Left", "Align Center", "Align Right", "Drop", "Move"]
class WasteWindow(Window):
def open(self, path, name, data):
self.path = path
self.name = name
r = windowbounds(400, 400)
w = Win.NewWindow(r, name, 1, 0, -1, 1, 0x55555555)
self.wid = w
## vr = 0, 0, r[2]-r[0]-15, r[3]-r[1]-15
## dr = (0, 0, 10240, 0)
## Qd.SetPort(w)
## Qd.TextFont(4)
## Qd.TextSize(9)
## self.ted = waste.WENew(dr, vr, flags)
flags = MacTextEditor.kTXNDrawGrowIconMask|MacTextEditor.kTXNShowWindowMask|MacTextEditor.kTXNWantHScrollBarMask| \
MacTextEditor.kTXNWantVScrollBarMask
self.ted, self.frameid = Mlte.TXNNewObject(None, w, None, flags, MacTextEditor.kTXNTextEditStyleFrameType,
MacTextEditor.kTXNTextFile, MacTextEditor.kTXNMacOSEncoding)
## self.tedtexthandle = Res.Resource(data)
## self.ted.WEUseText(self.tedtexthandle)
self.ted.TXNSetData(MacTextEditor.kTXNTextData, data, 0, 0x7fffffff)
## self.ted.WECalText()
## w.DrawGrowIcon()
## self.scrollbars()
self.changed = 0
self.do_postopen()
self.do_activate(1, None)
def do_idle(self, event):
## (what, message, when, where, modifiers) = event
## Qd.SetPort(self.wid)
self.ted.TXNIdle()
self.ted.TXNAdjustCursor(None)
## def getscrollbarvalues(self):
## dr = self.ted.WEGetDestRect()
## vr = self.ted.WEGetViewRect()
## vx = self.scalebarvalue(dr[0], dr[2], vr[0], vr[2])
## vy = self.scalebarvalue(dr[1], dr[3], vr[1], vr[3])
#### print dr, vr, vx, vy
## return vx, vy
##
## def scrollbar_callback(self, which, what, value):
## if which == 'y':
## if what == 'set':
## height = self.ted.WEGetHeight(0, 0x3fffffff)
## cur = self.getscrollbarvalues()[1]
## delta = (cur-value)*height/32767
## if what == '-':
## topline_off,dummy = self.ted.WEGetOffset((1,1))
## topline_num = self.ted.WEOffsetToLine(topline_off)
## delta = self.ted.WEGetHeight(topline_num, topline_num+1)
## elif what == '--':
## delta = (self.ted.WEGetViewRect()[3]-10)
## if delta <= 0:
## delta = 10 # Random value
## elif what == '+':
## # XXXX Wrong: should be bottom line size
## topline_off,dummy = self.ted.WEGetOffset((1,1))
## topline_num = self.ted.WEOffsetToLine(topline_off)
## delta = -self.ted.WEGetHeight(topline_num, topline_num+1)
## elif what == '++':
## delta = -(self.ted.WEGetViewRect()[3]-10)
## if delta >= 0:
## delta = -10
## self.ted.WEScroll(0, delta)
#### print 'SCROLL Y', delta
## else:
## if what == 'set':
## return # XXXX
## vr = self.ted.WEGetViewRect()
## winwidth = vr[2]-vr[0]
## if what == '-':
## delta = winwidth/10
## elif what == '--':
## delta = winwidth/2
## elif what == '+':
## delta = -winwidth/10
## elif what == '++':
## delta = -winwidth/2
## self.ted.WEScroll(delta, 0)
## # Pin the scroll
## l, t, r, b = self.ted.WEGetDestRect()
## vl, vt, vr, vb = self.ted.WEGetViewRect()
## if t > 0 or l > 0:
## dx = dy = 0
## if t > 0: dy = -t
## if l > 0: dx = -l
#### print 'Extra scroll', dx, dy
## self.ted.WEScroll(dx, dy)
## elif b < vb:
#### print 'Extra downscroll', b-vb
## self.ted.WEScroll(0, b-vb)
def do_activate(self, onoff, evt):
## print "ACTIVATE", onoff
Qd.SetPort(self.wid)
Window.do_activate(self, onoff, evt)
if onoff:
self.ted.TXNFocus(1)
self.parent.active = self
self.parent.updatemenubar()
else:
self.ted.TXNFocus(0)
def do_update(self, wid, event):
Qd.SetPort(self.wid)
## region = wid.GetWindowPort().visRgn
## if Qd.EmptyRgn(region):
## return
## Qd.EraseRgn(region)
self.ted.TXNUpdate()
## self.updatescrollbars()
## def do_postresize(self, width, height, window):
## l, t, r, b = self.ted.WEGetViewRect()
## vr = (l, t, l+width-15, t+height-15)
## self.ted.WESetViewRect(vr)
## self.wid.InvalWindowRect(vr)
## ScrolledWindow.do_postresize(self, width, height, window)
def do_contentclick(self, local, modifiers, evt):
## (what, message, when, where, modifiers) = evt
self.ted.TXNClick(evt)
## self.updatescrollbars()
self.parent.updatemenubar()
def do_char(self, ch, event):
self.ted.TXNKeyDown(event)
## self.ted.WESelView()
## (what, message, when, where, modifiers) = event
## self.ted.WEKey(ord(ch), modifiers)
## self.changed = 1
## self.updatescrollbars()
## self.parent.updatemenubar()
def close(self):
if self.changed:
save = EasyDialogs.AskYesNoCancel('Save window "%s" before closing?'%self.name, 1)
if save > 0:
self.menu_save()
elif save < 0:
return
if self.parent.active == self:
self.parent.active = None
## self.parent.updatemenubar()
del self.ted
## del self.tedtexthandle
self.do_postclose()
def menu_save(self):
if not self.path:
self.menu_save_as()
return # Will call us recursively
print 'Saving to ', self.path
dhandle = self.ted.TXNGetData(0, 0x7fffffff)
data = dhandle.data
fp = open(self.path, 'wb') # NOTE: wb, because data has CR for end-of-line
fp.write(data)
if data[-1] <> '\r': fp.write('\r')
fp.close()
self.changed = 0
def menu_save_as(self):
fss, ok = macfs.StandardPutFile('Save as:')
if not ok: return
self.path = fss.as_pathname()
self.name = os.path.split(self.path)[-1]
self.wid.SetWTitle(self.name)
self.menu_save()
def menu_cut(self):
## self.ted.WESelView()
self.ted.TXNCut()
### Mlte.ConvertToPublicScrap()
## Scrap.ZeroScrap()
## self.ted.WECut()
## self.updatescrollbars()
self.parent.updatemenubar()
self.changed = 1
def menu_copy(self):
## Scrap.ZeroScrap()
self.ted.TXNCopy()
### Mlte.ConvertToPublicScrap()
## self.updatescrollbars()
self.parent.updatemenubar()
def menu_paste(self):
### Mlte.ConvertFromPublicScrap()
self.ted.TXNPaste()
## self.updatescrollbars()
self.parent.updatemenubar()
self.changed = 1
def menu_clear(self):
## self.ted.WESelView()
self.ted.TXNClear()
## self.updatescrollbars()
self.parent.updatemenubar()
self.changed = 1
def menu_undo(self):
self.ted.TXNUndo()
## self.updatescrollbars()
self.parent.updatemenubar()
def menu_redo(self):
self.ted.TXNRedo()
## self.updatescrollbars()
self.parent.updatemenubar()
def have_selection(self):
start, stop = self.ted.TXNGetSelection()
return start < stop
def can_paste(self):
return Mlte.TXNIsScrapPastable()
def can_undo(self):
can, which = self.ted.TXNCanUndo()
if not can:
return None
if which >= len(UNDOLABELS):
# Unspecified undo
return "Undo"
which = UNDOLABELS[which]
return "Undo "+which
def can_redo(self):
can, which = self.ted.TXNCanRedo()
if not can:
return None
if which >= len(UNDOLABELS):
# Unspecified undo
return "Redo"
which = UNDOLABELS[which]
return "Redo "+which
class Mlted(Application):
def __init__(self):
Application.__init__(self)
self.num = 0
self.active = None
self.updatemenubar()
def makeusermenus(self):
self.filemenu = m = Menu(self.menubar, "File")
self.newitem = MenuItem(m, "New window", "N", self.open)
self.openitem = MenuItem(m, "Open...", "O", self.openfile)
self.closeitem = MenuItem(m, "Close", "W", self.closewin)
m.addseparator()
self.saveitem = MenuItem(m, "Save", "S", self.save)
self.saveasitem = MenuItem(m, "Save as...", "", self.saveas)
m.addseparator()
self.quititem = MenuItem(m, "Quit", "Q", self.quit)
self.editmenu = m = Menu(self.menubar, "Edit")
self.undoitem = MenuItem(m, "Undo", "Z", self.undo)
self.redoitem = MenuItem(m, "Undo", None, self.redo)
self.cutitem = MenuItem(m, "Cut", "X", self.cut)
self.copyitem = MenuItem(m, "Copy", "C", self.copy)
self.pasteitem = MenuItem(m, "Paste", "V", self.paste)
self.clearitem = MenuItem(m, "Clear", "", self.clear)
# Groups of items enabled together:
self.windowgroup = [self.closeitem, self.saveitem, self.saveasitem, self.editmenu]
self.focusgroup = [self.cutitem, self.copyitem, self.clearitem]
self.windowgroup_on = -1
self.focusgroup_on = -1
self.pastegroup_on = -1
self.undo_label = "never"
self.redo_label = "never"
def updatemenubar(self):
changed = 0
on = (self.active <> None)
if on <> self.windowgroup_on:
for m in self.windowgroup:
m.enable(on)
self.windowgroup_on = on
changed = 1
if on:
# only if we have an edit menu
on = self.active.have_selection()
if on <> self.focusgroup_on:
for m in self.focusgroup:
m.enable(on)
self.focusgroup_on = on
changed = 1
on = self.active.can_paste()
if on <> self.pastegroup_on:
self.pasteitem.enable(on)
self.pastegroup_on = on
changed = 1
on = self.active.can_undo()
if on <> self.undo_label:
if on:
self.undoitem.enable(1)
self.undoitem.settext(on)
self.undo_label = on
else:
self.undoitem.settext("Nothing to undo")
self.undoitem.enable(0)
changed = 1
on = self.active.can_redo()
if on <> self.redo_label:
if on:
self.redoitem.enable(1)
self.redoitem.settext(on)
self.redo_label = on
else:
self.redoitem.settext("Nothing to redo")
self.redoitem.enable(0)
changed = 1
if changed:
DrawMenuBar()
#
# Apple menu
#
def do_about(self, id, item, window, event):
EasyDialogs.Message("A simple single-font text editor based on MacTextEditor")
#
# File menu
#
def open(self, *args):
self._open(0)
def openfile(self, *args):
self._open(1)
def _open(self, askfile):
if askfile:
fss, ok = macfs.StandardGetFile('TEXT')
if not ok:
return
path = fss.as_pathname()
name = os.path.split(path)[-1]
try:
fp = open(path, 'rb') # NOTE binary, we need cr as end-of-line
data = fp.read()
fp.close()
except IOError, arg:
EasyDialogs.Message("IOERROR: "+`arg`)
return
else:
path = None
name = "Untitled %d"%self.num
data = ''
w = WasteWindow(self)
w.open(path, name, data)
self.num = self.num + 1
def closewin(self, *args):
if self.active:
self.active.close()
else:
EasyDialogs.Message("No active window?")
def save(self, *args):
if self.active:
self.active.menu_save()
else:
EasyDialogs.Message("No active window?")
def saveas(self, *args):
if self.active:
self.active.menu_save_as()
else:
EasyDialogs.Message("No active window?")
def quit(self, *args):
for w in self._windows.values():
w.close()
if self._windows:
return
self._quit()
#
# Edit menu
#
def undo(self, *args):
if self.active:
self.active.menu_undo()
else:
EasyDialogs.Message("No active window?")
def redo(self, *args):
if self.active:
self.active.menu_redo()
else:
EasyDialogs.Message("No active window?")
def cut(self, *args):
if self.active:
self.active.menu_cut()
else:
EasyDialogs.Message("No active window?")
def copy(self, *args):
if self.active:
self.active.menu_copy()
else:
EasyDialogs.Message("No active window?")
def paste(self, *args):
if self.active:
self.active.menu_paste()
else:
EasyDialogs.Message("No active window?")
def clear(self, *args):
if self.active:
self.active.menu_clear()
else:
EasyDialogs.Message("No active window?")
#
# Other stuff
#
def idle(self, event):
if self.active:
self.active.do_idle(event)
def main():
Mlte.TXNInitTextension(0)
try:
App = Mlted()
App.mainloop()
finally:
Mlte.TXNTerminateTextension()
if __name__ == '__main__':
main()