# A minimal text editor. # # To be done: # - Functionality: find, etc. from Carbon.Menu import DrawMenuBar from FrameWork import * from Carbon import Win from Carbon import Qd from Carbon import Res import waste import WASTEconst from Carbon import Scrap import os import EasyDialogs UNDOLABELS = [ # Indexed by WEGetUndoInfo() value None, "", "typing", "Cut", "Paste", "Clear", "Drag", "Style"] BIGREGION=Qd.NewRgn() Qd.SetRectRgn(BIGREGION, -16000, -16000, 16000, 16000) class WasteWindow(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 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) flags = WASTEconst.weDoAutoScroll | WASTEconst.weDoOutlineHilite | \ WASTEconst.weDoMonoStyled | WASTEconst.weDoUndo self.ted = waste.WENew(dr, vr, flags) self.tedtexthandle = Res.Resource(data) self.ted.WEUseText(self.tedtexthandle) 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.WEIdle() if self.ted.WEAdjustCursor(where, BIGREGION): return Qd.SetCursor(Qd.GetQDGlobalsArrow()) 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) ScrolledWindow.do_activate(self, onoff, evt) if onoff: self.ted.WEActivate() self.parent.active = self self.parent.updatemenubar() else: self.ted.WEDeactivate() def do_update(self, wid, event): region = wid.GetWindowPort().visRgn if Qd.EmptyRgn(region): return Qd.EraseRgn(region) self.ted.WEUpdate(region) 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.WEClick(local, modifiers, when) self.updatescrollbars() self.parent.updatemenubar() def do_char(self, ch, 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.WEGetText() 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): path = EasyDialogs.AskFileForSave(message='Save as:') if not path: return self.path = path self.name = os.path.split(self.path)[-1] self.wid.SetWTitle(self.name) self.menu_save() def menu_cut(self): self.ted.WESelView() if hasattr(Scrap, 'ZeroScrap'): Scrap.ZeroScrap() else: Scrap.ClearCurrentScrap() self.ted.WECut() self.updatescrollbars() self.parent.updatemenubar() self.changed = 1 def menu_copy(self): if hasattr(Scrap, 'ZeroScrap'): Scrap.ZeroScrap() else: Scrap.ClearCurrentScrap() self.ted.WECopy() self.updatescrollbars() self.parent.updatemenubar() def menu_paste(self): self.ted.WESelView() self.ted.WEPaste() self.updatescrollbars() self.parent.updatemenubar() self.changed = 1 def menu_clear(self): self.ted.WESelView() self.ted.WEDelete() self.updatescrollbars() self.parent.updatemenubar() self.changed = 1 def menu_undo(self): self.ted.WEUndo() self.updatescrollbars() self.parent.updatemenubar() def have_selection(self): start, stop = self.ted.WEGetSelection() return start < stop def can_paste(self): return self.ted.WECanPaste() def can_undo(self): which, redo = self.ted.WEGetUndoInfo() which = UNDOLABELS[which] if which == None: return None if redo: return "Redo "+which else: return "Undo "+which class Wed(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) # 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" 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 if changed: DrawMenuBar() # # Apple menu # def do_about(self, id, item, window, event): EasyDialogs.Message("A simple single-font text editor based on WASTE") # # File menu # def open(self, *args): self._open(0) def openfile(self, *args): self._open(1) def _open(self, askfile): if askfile: path = EasyDialogs.AskFileForOpen(typeList=('TEXT',)) if not path: return 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: %r" % (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 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) else: Qd.SetCursor(Qd.GetQDGlobalsArrow()) def main(): App = Wed() App.mainloop() if __name__ == '__main__': main()