cpython/Mac/Demo/textedit/ped.py

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# A minimal text editor.
#
# To be done:
# - Update viewrect after resize
# - Handle horizontal scrollbar correctly
# - Functionality: find, etc.
from Menu import DrawMenuBar
from FrameWork import *
import Win
import Qd
import TE
import Scrap
import os
import macfs
class TEWindow(ScrolledWindow):
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, 0)
self.wid = w
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x0, y0, x1, y1 = self.wid.GetWindowPort().portRect
x0 = x0 + 4
y0 = y0 + 4
x1 = x1 - 20
y1 = y1 - 20
vr = dr = x0, y0, x1, y1
##vr = 4, 0, r[2]-r[0]-15, r[3]-r[1]-15
##dr = (0, 0, vr[2], 0)
Qd.SetPort(w)
Qd.TextFont(4)
Qd.TextSize(9)
self.ted = TE.TENew(dr, vr)
self.ted.TEAutoView(1)
self.ted.TESetText(data)
w.DrawGrowIcon()
self.scrollbars()
self.changed = 0
self.do_postopen()
self.do_activate(1, None)
def do_idle(self):
self.ted.TEIdle()
def getscrollbarvalues(self):
dr = self.ted.destRect
vr = self.ted.viewRect
height = self.ted.nLines * self.ted.lineHeight
vx = self.scalebarvalue(dr[0], dr[2]-dr[0], vr[0], vr[2])
vy = self.scalebarvalue(dr[1], dr[1]+height, vr[1], vr[3])
print dr, vr, height, vx, vy
return None, vy
def scrollbar_callback(self, which, what, value):
if which == 'y':
if what == 'set':
height = self.ted.nLines * self.ted.lineHeight
cur = self.getscrollbarvalues()[1]
delta = (cur-value)*height/32767
if what == '-':
delta = self.ted.lineHeight
elif what == '--':
delta = (self.ted.viewRect[3]-self.ted.lineHeight)
if delta <= 0:
delta = self.ted.lineHeight
elif what == '+':
delta = -self.ted.lineHeight
elif what == '++':
delta = -(self.ted.viewRect[3]-self.ted.lineHeight)
if delta >= 0:
delta = -self.ted.lineHeight
self.ted.TEPinScroll(0, delta)
print 'SCROLL Y', delta
else:
pass # No horizontal scrolling
def do_activate(self, onoff, evt):
print "ACTIVATE", onoff
ScrolledWindow.do_activate(self, onoff, evt)
if onoff:
self.ted.TEActivate()
self.parent.active = self
self.parent.updatemenubar()
else:
self.ted.TEDeactivate()
def do_update(self, wid, event):
Qd.EraseRect(wid.GetWindowPort().portRect)
self.ted.TEUpdate(wid.GetWindowPort().portRect)
self.updatescrollbars()
def do_contentclick(self, local, modifiers, evt):
shifted = (modifiers & 0x200)
self.ted.TEClick(local, shifted)
self.updatescrollbars()
self.parent.updatemenubar()
def do_char(self, ch, event):
self.ted.TESelView()
self.ted.TEKey(ord(ch))
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
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.TEGetText()
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.TESelView()
self.ted.TECut()
Scrap.ZeroScrap()
TE.TEToScrap()
self.updatescrollbars()
self.parent.updatemenubar()
self.changed = 1
def menu_copy(self):
self.ted.TECopy()
Scrap.ZeroScrap()
TE.TEToScrap()
self.updatescrollbars()
self.parent.updatemenubar()
def menu_paste(self):
TE.TEFromScrap()
self.ted.TESelView()
self.ted.TEPaste()
self.updatescrollbars()
self.parent.updatemenubar()
self.changed = 1
def menu_clear(self):
self.ted.TESelView()
self.ted.TEDelete()
self.updatescrollbars()
self.parent.updatemenubar()
self.changed = 1
def have_selection(self):
return (self.ted.selStart < self.ted.selEnd)
class Ped(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.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)
# Not yet implemented:
self.undoitem.enable(0)
# 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
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
if hasattr(Scrap, 'InfoScrap'):
on = (Scrap.InfoScrap()[0] <> 0)
else:
# Not there yet on Carbon, simply always enable
on = 1
if on <> self.pastegroup_on:
self.pasteitem.enable(on)
self.pastegroup_on = on
changed = 1
if changed:
DrawMenuBar()
#
# Apple menu
#
def do_about(self, id, item, window, event):
EasyDialogs.Message("A simple single-font text editor")
#
# 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 = TEWindow(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):
pass
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, *args):
if self.active:
self.active.do_idle()
else:
Qd.SetCursor(Qd.qd.arrow)
def main():
App = Ped()
App.mainloop()
if __name__ == '__main__':
main()