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+#!/usr/bin/env python2
+# -*- coding: UTF-8 -*-
+#
+# suim.py
+#
+# (c) Copyright 2010 Michael Towers (larch42 at googlemail dot com)
+#
+# This file is part of the larch project.
+#
+# larch is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# larch is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with larch; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+#
+#----------------------------------------------------------------------------
+# 2010.10.24
+
+#++++++++++++++++++++++++++++++++++++++++++++++++++++
+#TODO
+# Add more widgets
+# Add more attribute handling
+# Add more signal handling
+
+# Fetching of image and icon files via a sort of url-like mechanism, I
+# suppose initially using the 'base:' prefix might be ok.
+# Then the cwd of the gui script would be irrelevant.
+
+#New file dialog for accessing the 'server' end.
+
+# I suspect the DialogButtonBox stuff needs changing to cope with
+# translations.
+
+#----------------------------------------------------
+
+
+"""SUIM - Simple User Interface Module
+
+The aim is to provide a means of creating graphical user interfaces of
+moderate complexity while abstracting the interface to the actual underlying
+toolkit in such a way that (at least potentially) an alternative toolkit
+could be used.
+[At present this aspect is rather theoretical since only a pyqt based
+version has been written.]
+
+The gui layout is specified as a python data structure, using widget types,
+parameter and signal names independent of the underlying toolkit. All
+widgets are accessible by their tag, which must be specified.
+
+A widget is defined by a call to the 'widget' method of the GuiApp instance.
+The first argument is the widget type, the second is the widget tag, the
+remaining ones must be named, they form the parameters to the constructor.
+If the widget is a 'container' (i.e. if it contains other widgets), it will
+need a 'layout' parameter defining the layout of its contents.
+
+There is also a 'widgetlist' method which accepts a list of widget
+definitions, each definition being itself a list. The first entry in a
+definition is the widget type, the second is the widget tag, the
+third is a dictionary containing all the parameters. For convenience (I'm not
+sure if I will keep this, though) any entries after the dictionary will be
+treated as signal names. These are just added to the parameter dictionary
+with value '' (enabling the signal with its default tag).
+
+Signals have signatures/keys comprising the tag of the emitting widget and
+the signal name (separated by '*'), and this will by default also be the tag
+by which the signal is known for connection purposes. But this can be
+overridden, for example to allow several widgets to emit the same signal.
+In the latter case the widget tag can (optionally) be passed as the first
+argument to the signal handler.
+
+Passing signal names as parameters to a widget constructor enables these
+signals. They can later be disabled, if desired.
+
+Connect and disconnect methods are available, to associate (or dissociate)
+handler functions with (/from) signals.
+"""
+
+import os, sys, traceback, threading
+from PyQt4 import QtGui, QtCore, QtWebKit
+from collections import deque
+
+
+def debug(text):
+ sys.stderr.write("GUI: %s\n" % text)
+ sys.stderr.flush()
+
+# Either I need to wrap all text input with this or I need to ensure that
+# I get unicode from outside ...
+import locale
+encoding = locale.getdefaultlocale()[1]
+def convert(text):
+ """Try to handle encoding.
+ """
+ if isinstance(text, str):
+ return text.decode(encoding) if encoding else text.decode()
+ else:
+ return text
+
+
+# Widget Base Classes - essentially used as 'Mixins' >>>>>>>>>>>>>>>>
+class WBase:
+ def x__tt(self, text):
+ """Set tooltip.
+ """
+ self.setToolTip(text) #qt
+
+ def x__text(self, text=""):
+ """Set widget text.
+ """
+ self.setText(convert(text)) #qt
+
+ def x__enable(self, on):
+ """Enable/Disable widget. on should be True to enable the widget
+ (display it in its normal, active state), False to disable it
+ (which will normally be paler and non-interactive).
+ """
+ self.setEnabled(on) #qt
+
+ def x__focus(self):
+ self.setFocus() #qt
+
+ def x__width(self, w):
+ """Set the minimum width for the widget.
+ """
+ self.setMinimumWidth(w) #qt
+
+ def x__typewriter(self, on):
+ """Use a typewriter (fixed spacing) font.
+ """
+ if on:
+ f = QtGui.QFont(self.font()) #qt
+ f.setFamily("Courier") #qt
+ self.setFont(f) #qt
+
+ def x__busycursor(self, on):
+ """Set/clear the busy-cursor for this widget.
+ """
+ if on:
+ self.setCursor(QtCore.Qt.BusyCursor) #qt
+ else:
+ self.unsetCursor() #qt
+
+
+class BBase:
+ """Button mixin.
+ """
+ def x__icon(self, icon):
+ self.setIcon(self.style().standardIcon(icondict[icon])) #qt
+
+#qt
+icondict = { "left" : QtGui.QStyle.SP_ArrowLeft,
+ "right" : QtGui.QStyle.SP_ArrowRight,
+ "down" : QtGui.QStyle.SP_ArrowDown,
+ "up" : QtGui.QStyle.SP_ArrowUp,
+ "reload" : QtGui.QStyle.SP_BrowserReload,
+ }
+
+class Container:
+ """This just adds layout management for widgets which contain
+ other widgets.
+ """
+ def x__layout(self, layout, immediate=False):
+ """A layout specifies and organizes the contents of a widget.
+ Note that the layouting is not immediately performed by default as
+ it is unlikely that all the contained widgets have been defined yet.
+ """
+ self._layout = layout
+ if immediate:
+ self.x__pack()
+
+ def x__pack(self):
+ """A layout call specifies and organizes the contents of a widget.
+ The layout can be a layout manager list, or a single widget name
+ (or an empty string, which will cause a warning to be issued, but
+ may be useful during development).
+
+ There are three sorts of thing which can appear in layout manager
+ lists (apart from the layout type at the head of the list and an
+ optional attribute dict as second item). There can be named
+ widgets, there can be further layout managers (specified as lists,
+ nested as deeply as you like) and there can be layout widgets,
+ like spacers and separators.
+
+ A layout widget can have optional arguments, which are separated
+ by commas, e.g. 'VLINE,3' passes the argument '3' to the VLINE
+ constructor.
+ """
+ # getattr avoids having to have an __init__() for Container.
+ if getattr(self, '_layout', None):
+ if self._layout != '$':
+ self.setLayout(self.getlayout(self._layout))
+ self._layout = '$'
+ else:
+ debug("No layout set on '%s'" % self.w_name)
+
+ def getlayout(self, item):
+ if isinstance(item, list):
+ try:
+ # Create a layout manager instance
+ layoutmanager = layout_table[item[0]]()
+ assert isinstance(layoutmanager, Layout)
+ except:
+ gui_error("Unknown layout type: %s" % item[0])
+ if (len(item) > 1) and isinstance(item[1], dict):
+ dictarg = item[1]
+ ilist = item[2:]
+ else:
+ dictarg = {}
+ ilist = item[1:]
+ # Build up the list of objects to lay out
+ # If the layout manager is a GRID, accept only grid rows ('+')
+ if isinstance(layoutmanager, GRID):
+ args = []
+ rowlen = None
+ for i in ilist:
+ if isinstance(i, list) and (i[0] == '+'):
+ args.append(self.getlayoutlist(i[1:], grid=True))
+ if rowlen == None:
+ rowlen = len(i)
+ elif len(i) != rowlen:
+ gui_error("Grid (%s) row lengths unequal"
+ % self.w_name)
+ else:
+ gui_error("Grid (%s) layouts must consist of grid"
+ " rows ('+')" % self.w_name)
+ else:
+ # Otherwise the elements of the argument list can be:
+ # A sub-layout
+ # A widget
+ # A SPACE
+ args = self.getlayoutlist(ilist)
+ layoutmanager.do_layout(args)
+ # Attributes
+ for key, val in dictarg:
+ handler = "x__" + key
+ if hasattr(layoutmanager, handler):
+ getattr(layoutmanager, handler)(val)
+ return layoutmanager
+
+ else:
+ # It must be a widget, which will need to be put in a box (qt)
+ return self.getlayout(['VBOX', item])
+
+ def getlayoutlist(self, items, grid=False):
+ objects = []
+ for i in items:
+ if isinstance(i, list):
+ obj = self.getlayout(i)
+ else:
+ parts = i.split(',')
+ i = parts[0]
+ args = parts[1:]
+ try:
+ obj = layout_table[i](*args)
+ if not (isinstance(obj, SPACE) # or a separator line
+ or isinstance(obj, QtGui.QWidget)): #qt
+ assert (grid and isinstance(obj, Span))
+ except:
+ obj = guiapp.getwidget(i)
+ if obj != None:
+ if isinstance(obj, Container):
+ obj.x__pack()
+ else:
+ gui_error("Bad item in layout of '%s': '%s'"
+ % (self.w_name, i))
+ objects.append(obj)
+ return objects
+
+
+class XContainer(Container):
+ """This is a mixin class for containers which can contain more than
+ one layout.
+ """
+ def x__layout(self, layout):
+ gui_error("An extended container (%s) has no 'layout' method"
+ % self.w_name)
+
+
+class TopLevel(Container):
+ def x__show(self):
+ self.set_visible()
+
+ def set_visible(self, on=True):
+ self.setVisible(on) #qt
+
+ def x__size(self, w_h):
+ w, h = [int(i) for i in w_h.split("_")]
+ self.resize(w, h) #qt
+
+ def x__icon(self, iconpath):
+ guiapp.setWindowIcon(QtGui.QIcon(iconpath)) #qt
+
+ def x__title(self, text):
+ if text == None:
+ text = guiapp.appname
+ self.setWindowTitle(text) #qt
+
+ def x__getSize(self):
+ s = self.size() #qt
+ return "%d_%d" % (s.width(), s.height()) #qt
+
+ def x__getScreenSize(self):
+ dw = guiapp.desktop() #qt
+ geom = dw.screenGeometry(self) #qt
+ return "%d_%d" % (geom.width(), geom.height()) #qt
+
+#<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+
+class Window(QtGui.QWidget, TopLevel): #qt
+ """This is needed to trap window closing events.
+ """
+ def __init__(self):
+ QtGui.QWidget.__init__(self) #qt
+ self.closesignal = ""
+
+ def closeEvent(self, event): #qt
+ if self.closesignal:
+ guiapp.sendsignal(self.closesignal)
+ event.ignore() #qt
+ return
+ QtGui.QWidget.closeEvent(self, event) #qt
+
+ def x__closesignal(self, text):
+ self.closesignal = text
+
+
+class Dialog(QtGui.QDialog, TopLevel):
+ def __init__(self):
+ QtGui.QDialog.__init__(self) #qt
+
+ def x__showmodal(self):
+ return self.exec_() == QtGui.QDialog.Accepted #qt
+
+
+class DialogButtons(QtGui.QDialogButtonBox): #qt
+ def __init__(self):
+ return
+
+ def x__buttons(self, args):
+ """This keyword argument MUST be present.
+ """
+ buttons = 0
+ for a in args:
+ try:
+ b = getattr(QtGui.QDialogButtonBox, a) #qt
+ assert isinstance(b, int) #qt
+ buttons |= b #qt
+ except:
+ gui_warning("Unknown Dialog button: %s" % a)
+ QtGui.QDialogButtonBox.__init__(self, buttons) #qt
+
+ def x__dialog(self, dname):
+ """This must be set or else the dialog buttons won't do anything.
+ """
+ self._dialog = guiapp.getwidget(dname)
+ self.connect(self, QtCore.SIGNAL("clicked(QAbstractButton *)"), #qt
+ self._clicked) #qt
+
+ def _clicked(self, button): #qt
+ if self.buttonRole(button) == self.AcceptRole: #qt
+ self._dialog.accept() #qt
+ else:
+ self._dialog.reject() #qt
+
+
+def textLineDialog(label="???:", title=None, text="", pw=False):
+ if title == None:
+ title = guiapp.appname
+ echo = QtGui.QLineEdit.Password if pw else QtGui.QLineEdit.Normal #qt
+ res, ok = QtGui.QInputDialog.getText(None, title, label, echo, text) #qt
+ return (ok, unicode(res))
+
+
+def listDialog(label="???", title=None, items=[], current=0):
+ if title == None:
+ title = guiapp.appname
+ res, ok = QtGui.QInputDialog.getItem(None, title, label, items, current)
+ return (ok, unicode(res))
+
+
+def confirmDialog(message, title=None):
+ if title == None:
+ title = guiapp.appname
+ return (QtGui.QMessageBox.question(None, title, convert(message),
+ QtGui.QMessageBox.Ok | QtGui.QMessageBox.Cancel)
+ == QtGui.QMessageBox.Ok)
+
+
+def infoDialog(message, title=None):
+ if title == None:
+ title = guiapp.appname
+ QtGui.QMessageBox.information(None, title, message)
+
+
+#+++++++++++++++++++++++++++
+# Error handling
+def gui_error(message, title=None):
+ if title == None:
+ title = "!!! %s !!!" % guiapp.appname
+ QtGui.QMessageBox.critical(None, title, message)
+ guiapp.quit()
+
+def gui_warning(message, title=None):
+ if title == None:
+ title = guiapp.appname
+ QtGui.QMessageBox.warning(None, title, message)
+
+def onexcept(text):
+ debug(traceback.format_exc())
+ gui_error(text, "Exception")
+#---------------------------
+
+
+fileDialogDir = ''
+# In tests with the gtk dialog the options were not respected,
+# with ro you could still create new directories
+# and all files were shown when only-directories was specified.
+# So I am using the non-native dialogs.
+
+def fileDialog_getdir(caption = None, ro = True, startdir=None):
+ global fileDialogDir
+ if caption == None:
+ caption = ''
+ if startdir == None:
+ startdir = fileDialogDir
+ options = QtGui.QFileDialog.ShowDirsOnly | QtGui.QFileDialog.DontUseNativeDialog
+ if ro:
+ options |= QtGui.QFileDialog.ReadOnly
+ d = QtGui.QFileDialog.getExistingDirectory(None, caption, startdir, options)
+ if d:
+ d = unicode(d)
+ fileDialogDir = d
+ return d
+
+def fileDialog_open(caption = None, startdir=None, filter=None):
+ global fileDialogDir
+ if caption == None:
+ caption = ''
+ if startdir == None:
+ startdir = fileDialogDir
+ if filter:
+ filter = '%s (%s)' % (filter[0], ' '.join(filter[1:])) #qt
+ else:
+ filter = ''
+ d = QtGui.QFileDialog.getOpenFileName(None, caption, startdir, filter, #qt
+ options=QtGui.QFileDialog.DontUseNativeDialog | QtGui.QFileDialog.ReadOnly) #qt
+ if d:
+ d = unicode(d)
+ fileDialogDir = os.path.dirname(d)
+ return d
+
+def fileDialog_save(caption = None, startdir=None, filter=None):
+ global fileDialogDir
+ if caption == None:
+ caption = ''
+ if startdir == None:
+ startdir = fileDialogDir
+ if filter:
+ filter = '%s (%s)' % (filter[0], ' '.join(filter[1:])) #qt
+ else:
+ filter = ''
+ d = QtGui.QFileDialog.getSaveFileName(None, caption, startdir, filter, #qt
+ options=QtGui.QFileDialog.DontUseNativeDialog) #qt
+ if d:
+ d = unicode(d)
+ fileDialogDir = os.path.dirname(d)
+ return d
+
+
+class Stack(QtGui.QStackedWidget, XContainer): #qt
+ def __init__(self):
+ QtGui.QStackedWidget.__init__(self) #qt
+ self.x_twidgets = []
+
+ def x__pages(self, pages):
+ self.x_twidgets = pages
+
+ def x__pack(self):
+ for name in self.x_twidgets:
+ w = guiapp.getwidget(name)
+ w.x__pack()
+ self.addWidget(w) #qt
+
+ def x__set(self, index=0):
+ self.setCurrentIndex(index) #qt
+
+
+class Notebook(QtGui.QTabWidget, XContainer): #qt
+ def __init__(self):
+ QtGui.QTabWidget.__init__(self) #qt
+ self.x_tabs = []
+ self.x_twidgets = []
+
+ def x__changed(self, name=''):
+ guiapp.signal(self, 'changed', name, 'currentChanged(int)') #qt
+
+ def x__tabs(self, tabs):
+ self.x_twidgets = tabs
+
+ def x__pack(self):
+ for name, title in self.x_twidgets:
+ w = guiapp.getwidget(name)
+ w.x__pack()
+ self.addTab(w, title) #qt
+ self.x_tabs.append([name, w])
+
+ def x__set(self, index=0):
+ self.setCurrentIndex(index) #qt
+
+ def x__enableTab(self, index, on):
+ self.setTabEnabled(index, on) #qt
+
+
+class Page(QtGui.QWidget, Container): #qt
+ def __init__(self):
+ QtGui.QWidget.__init__(self) #qt
+
+ def x__enable(self, on):
+ """Enable/Disable widget. on should be True to enable the widget
+ (display it in its normal, active state), False to disable it
+ (which will normally be paler and non-interactive).
+ """
+ self.setEnabled(on) #qt
+
+
+class Frame(QtGui.QGroupBox, WBase, Container): #qt
+ def __init__(self):
+ QtGui.QGroupBox.__init__(self) #qt
+ self._text = None
+
+ def x__text(self, text):
+ self._text = text
+ self.setTitle(text) #qt
+
+# A hack to improve spacing
+ def setLayout(self, layout):
+ topgap = 10 if self._text else 0
+ layout.setContentsMargins(0, topgap, 0, 0) #qt
+ QtGui.QGroupBox.setLayout(self, layout)
+
+
+class OptionalFrame(Frame): #qt
+ def __init__(self): #qt
+ Frame.__init__(self) #qt
+ self.setCheckable(True) #qt
+ self.setChecked(False) #qt
+
+ def x__toggled(self, name=''):
+ guiapp.signal(self, 'toggled', name, 'toggled(bool)') #qt
+
+ def x__opton(self, on):
+ self.setChecked(on) #qt
+
+#TODO: Is this still needed? (I think it's a qt bug)
+ def x__enable_hack(self): #qt
+ if not self.isChecked(): #qt
+ self.setChecked(True) #qt
+ self.setChecked(False) #qt
+
+ def x__active(self):
+ return self.isChecked() #qt
+
+
+def read_markup(markup):
+ def read_markup0(mlist):
+ text = ''
+ for i in mlist:
+ text += read_markup(i) if isinstance(i, list) else i
+ return text
+ tag = markup[0]
+ if tag == '':
+ return read_markup0(markup[1:])
+ elif tag in ('h1', 'h2', 'h3', 'h4', 'p', 'em', 'strong'):
+ return '<%s>%s</%s>' % (tag, read_markup0(markup[1:]), tag)
+ elif tag == 'color':
+ return '<span style="color:%s;">%s</span>' % (markup[1],
+ read_markup0(markup[2:]))
+ return "Markup parse error"
+
+
+class Label(QtGui.QLabel, WBase): #qt
+ def __init__(self):
+ QtGui.QLabel.__init__(self) #qt
+
+ def x__markup(self, markup):
+ self.setText(read_markup(markup)) #qt
+
+ def x__image(self, path):
+ self.setPixmap(QtGui.QPixmap(path)) #qt
+
+ def x__align(self, pos):
+ if pos == "center":
+ a = QtCore.Qt.AlignCenter #qt
+ else:
+ a = QtCore.Qt.AlignRight | QtCore.Qt.AlignVCenter #qt
+ self.setAlignment(a) #qt
+
+
+class Button(QtGui.QPushButton, WBase, BBase): #qt
+ def __init__(self):
+ QtGui.QPushButton.__init__(self) #qt
+
+ def x__clicked(self, name=''):
+ guiapp.signal(self, 'clicked', name, 'clicked()') #qt
+
+
+class ToggleButton(QtGui.QPushButton, WBase, BBase): #qt
+ def __init__(self):
+ QtGui.QPushButton.__init__(self) #qt
+ self.setCheckable(True) #qt
+
+ def x__toggled(self, name=''):
+ guiapp.signal(self, 'toggled', name, 'toggled(bool)') #qt
+
+ def x__set(self, on):
+ self.setChecked(on) #qt
+
+
+class CheckBox(QtGui.QCheckBox, WBase): #qt
+ def __init__(self):
+ QtGui.QCheckBox.__init__(self) #qt
+
+ def x__toggled(self, name=''):
+ # A bit of work is needed to get True/False state #qt
+ # instead of 0/1/2 #qt
+ guiapp.signal(self, 'toggled', name,
+ 'toggled(bool)', self.s_toggled) #qt
+
+ def s_toggled(self, state): #qt
+ """Convert the argument to True/False.
+ """ #qt
+ return (state != QtCore.Qt.Unchecked,) #qt
+
+ def x__set(self, on):
+ self.setCheckState(2 if on else 0) #qt
+
+ def x__active(self):
+ return self.checkState() != QtCore.Qt.Unchecked #qt
+
+
+class RadioButton(QtGui.QRadioButton, WBase): #qt
+ def __init__(self):
+ QtGui.QPushButton.__init__(self) #qt
+
+ def x__toggled(self, name=''):
+ guiapp.signal(self, 'toggled', name, 'toggled(bool)') #qt
+
+ def x__set(self, on):
+ self.setChecked(on) #qt
+
+ def x__active(self):
+ return self.isChecked() #qt
+
+
+class ComboBox(QtGui.QComboBox, WBase): #qt
+ def __init__(self):
+ QtGui.QComboBox.__init__(self) #qt
+
+ def x__changed(self, name=''):
+ guiapp.signal(self, 'changed', name, 'currentIndexChanged(int)') #qt
+
+ def x__changedstr(self, name=''):
+ guiapp.signal(self, 'changedstr', name,
+ 'currentIndexChanged(const QString &)') #qt
+
+ def x__set(self, items, index=0):
+ self.blockSignals(True)
+ self.clear() #qt
+ if items:
+ self.addItems(items) #qt
+ self.setCurrentIndex(index) #qt
+ self.blockSignals(False)
+
+ def x__index(self):
+ return self.currentIndex() #qt
+
+ def x__setindex(self, index):
+ return self.setCurrentIndex(index) #qt
+
+
+class ListChoice(QtGui.QListWidget, WBase): #qt
+ def __init__(self):
+ QtGui.QListWidget.__init__(self) #qt
+
+ def x__changed(self, name=''):
+ guiapp.signal(self, 'changed', name, 'currentRowChanged(int)') #qt
+
+ def x__set(self, items, index=0):
+ self.blockSignals(True)
+ self.clear() #qt
+ if items:
+ self.addItems(items) #qt
+ self.setCurrentRow(index) #qt
+ self.blockSignals(False)
+
+
+class List(QtGui.QTreeWidget, WBase): #qt
+ # Only using top-level items of the tree
+ def __init__(self):
+ QtGui.QTreeWidget.__init__(self) #qt
+ self.mode = ""
+ self.setSelectionMode(QtGui.QAbstractItemView.ExtendedSelection) #qt
+ self.setRootIsDecorated(False) #qt
+ self._hcompact = False # used for scheduling header-compaction
+
+ def x__select(self, name=''):
+ guiapp.signal(self, 'select', name,
+ 'itemSelectionChanged()', self.s_select) #qt
+
+ def x__clicked(self, name=''):
+ guiapp.signal(self, 'clicked', name,
+ 'itemClicked(QTreeWidgetItem *,int)', self.s_clicked) #qt
+
+ def s_select(self):
+ # Signal a selection change, passing the new selection list (indexes)
+ s = [self.indexOfTopLevelItem(i) for i in self.selectedItems()] #qt
+ if self.mode == "Single":
+ return s
+ else:
+ return (s,)
+
+ def s_clicked(self, item, col): #qt
+ """This is intended for activating a user-defined editing function.
+ Tests showed that this is called after the selection is changed, so
+ if using this signal, use it only in 'Single' selection mode and
+ use this, not 'select' to record selection changes. Clicking on the
+ selected row should start editing the cell, otherwise just change
+ the selection.
+ """
+ ix = self.indexOfTopLevelItem(item) #qt
+ return (ix, col)
+
+ def x__selectionmode(self, sm):
+ self.mode = sm
+ if sm == "None":
+ self.setSelectionMode(QtGui.QAbstractItemView.NoSelection) #qt
+ elif sm == "Single":
+ self.setSelectionMode(QtGui.QAbstractItemView.SingleSelection) #qt
+ else:
+ self.mode = ""
+ self.setSelectionMode(QtGui.QAbstractItemView.ExtendedSelection) #qt
+
+ def x__headers(self, headers): #qt
+ self.setHeaderLabels(headers) #qt
+ if self._hcompact:
+ self._compact()
+
+ def x__set(self, items, index=0): #qt
+ # Note that each item must be a tuple/list containing
+ # entries for each column.
+ self.clear() #qt
+ c = 0
+ for i in items:
+ item = QtGui.QTreeWidgetItem(self, i) #qt
+ self.addTopLevelItem(item) #qt
+ if c == index:
+ self.setCurrentItem(item)
+ c += 1
+ if self._hcompact:
+ self._compact()
+
+ def x__compact(self, on=True):
+ self._hcompact = on
+ if on:
+ self._compact()
+
+ def _compact(self):
+ for i in range(self.columnCount()): #qt
+ self.resizeColumnToContents(i) #qt
+
+
+class LineEdit(QtGui.QLineEdit, WBase): #qt
+ def __init__(self):
+ QtGui.QLineEdit.__init__(self) #qt
+
+ def x__enter(self, name=''):
+ guiapp.signal(self, 'enter', name, 'returnPressed()') #qt
+
+ def x__changed(self, name=''):
+ guiapp.signal(self, 'changed', name, 'textEdited(const QString &)') #qt
+
+ def x__get(self):
+ return unicode(self.text()) #qt
+
+ def x__ro(self, ro):
+ self.setReadOnly(ro) #qt
+
+ def x__pw(self, star):
+ self.setEchoMode(QtGui.QLineEdit.Password if star == "+" #qt
+ else QtGui.QLineEdit.NoEcho if star == "-" #qt
+ else QtGui.QLineEdit.Normal) #qt
+
+
+class CheckList(QtGui.QWidget, WBase): #qt
+ def __init__(self):
+ QtGui.QWidget.__init__(self) #qt
+ self.box = QtGui.QVBoxLayout(self) #qt
+ self.title = None
+ if text: #qt
+ l.addWidget(QtGui.QLabel(text)) #qt
+ self.widget = QtGui.QListWidget() #qt
+ l.addWidget(self.widget) #qt
+
+ def x__title(self, text):
+ if self.title:
+ self.title.setText(text) #qt
+ else:
+ self.title = QtGui.QLabel(text) #qt
+ self.box.insertWidget(0, self.title) #qt
+
+ def x__checked(self, index):
+ return (self.widget.item(index).checkState() == #qt
+ QtCore.Qt.Checked) #qt
+
+ def x__set(self, items):
+ self.widget.blockSignals(True) #qt
+ self.widget.clear() #qt
+ if items:
+ for s, c in items:
+ wi = QtGui.QListWidgetItem(s, self.widget) #qt
+ wi.setCheckState(QtCore.Qt.Checked if c #qt
+ else QtCore.Qt.Unchecked) #qt
+ self.blockSignals(False) #qt
+
+
+class TextEdit(QtGui.QTextEdit, WBase): #qt
+ def __init__(self):
+ QtGui.QTextEdit.__init__(self) #qt
+
+ def x__ro(self, ro):
+ self.setReadOnly(ro) #qt
+
+ def x__append_and_scroll(self, text):
+ self.append(text) #qt
+ self.ensureCursorVisible() #qt
+
+ def x__get(self):
+ return unicode(self.toPlainText()) #qt
+
+ def x__undo(self):
+ QtGui.QTextEdit.undo(self) #qt
+
+ def x__redo(self):
+ QtGui.QTextEdit.redo(self) #qt
+
+ def x__copy(self):
+ QtGui.QTextEdit.copy(self) #qt
+
+ def x__cut(self):
+ QtGui.QTextEdit.cut(self) #qt
+
+ def x__paste(self):
+ QtGui.QTextEdit.paste(self) #qt
+
+
+class HtmlView(QtWebKit.QWebView, WBase): #qt
+ def __init__(self):
+ QtWebKit.QWebView.__init__(self) #qt
+
+ def x__html(self, content):
+ self.setHtml(content) #qt
+
+ def x__setUrl(self, url):
+ self.load(QtCore.QUrl(url)) #qt
+
+ def x__prev(self):
+ self.back() #qt
+
+ def x__next(self):
+ self.forward() #qt
+
+
+class SpinBox(QtGui.QDoubleSpinBox, WBase): #qt
+ def __init__(self):
+ QtGui.QDoubleSpinBox.__init__(self) #qt
+ self.step = None
+
+ def x__changed(self, name=''):
+ guiapp.signal(self, 'changed', name, 'valueChanged(double)') #qt
+
+ def x__min(self, min):
+ self.setMinimum(min)
+
+ def x__max(self, max):
+ self.setMaximum(max)
+
+ def x__decimals(self, dec):
+ self.setDecimals(dec)
+ if not self.step:
+ self.setSingleStep(10**(-dec))
+
+ def x__step(self, step):
+ self.setSingleStep(step)
+
+ def x__value(self, val):
+ self.setValue(val)
+
+
+class ProgressBar(QtGui.QProgressBar, WBase): #qt
+ def __init__(self):
+ QtGui.QProgressBar.__init__(self) #qt
+
+ def x__set(self, value):
+ self.setValue(value) #qt
+
+ def x__max(self, max):
+ self.setMaximum(max) #qt
+
+
+
+# Layout classes
+class Layout:
+ """A mixin base class for all layout widgets.
+ """
+ pass
+
+boxmargin=3
+class _BOX(Layout):
+ def do_layout(self, items):
+ self.setContentsMargins(boxmargin, boxmargin, boxmargin, boxmargin) #qt
+ for wl in items:
+ if isinstance(wl, QtGui.QWidget): #qt
+ self.addWidget(wl) #qt
+ elif isinstance(wl, SPACE): #qt
+ if wl.size: #qt
+ self.addSpacing(wl.size) #qt
+ self.addStretch() #qt
+ elif isinstance(wl, Layout): #qt
+ self.addLayout(wl) #qt
+ else: #qt
+ gui_error("Invalid Box entry: %s" % repr(wl))
+
+
+class VBOX(QtGui.QVBoxLayout, _BOX): #qt
+ def __init__(self):
+ QtGui.QVBoxLayout.__init__(self) #qt
+
+
+class HBOX(QtGui.QHBoxLayout, _BOX): #qt
+ def __init__(self):
+ QtGui.QHBoxLayout.__init__(self) #qt
+
+
+class GRID(QtGui.QGridLayout, Layout): #qt
+ def __init__(self):
+ QtGui.QGridLayout.__init__(self) #qt
+
+ def do_layout(self, rows):
+ y = -1
+ for row in rows:
+ y += 1
+ x = -1
+ for wl in row:
+ x += 1
+ if isinstance(wl, Span):
+ continue
+ # Determine the row and column spans
+ x1 = x + 1
+ while (x1 < len(row)) and isinstance(row[x1], CSPAN):
+ x1 += 1
+ y1 = y + 1
+ while (y1 < len(rows)) and isinstance(rows[y1][x], RSPAN):
+ y1 += 1
+
+ if isinstance(wl, QtGui.QWidget): #qt
+ self.addWidget(wl, y, x, y1-y, x1-x) #qt
+ elif isinstance(wl, Layout):
+ self.addLayout(wl, y, x, y1-y, x1-x) #qt
+ elif isinstance(wl, SPACE):
+ self.addItem(QtGui.QSpacerItem(wl.size, wl.height),
+ y, x, y1-y, x1-x) #qt
+ else:
+ gui_error("Invalid entry in Grid layout: %s" % repr(wl))
+
+
+class SPACE:
+ """Can be used in boxes and grids. In boxes only size is of interest,
+ and it also means vertical size in the case of a vbox. In grids size
+ is the width.
+ """
+ def __init__(self, size_width='0', height='0'): #qt
+ self.size = int(size_width) #qt
+ self.height = int(height) #qt
+
+
+class Span:
+ """Class to group special grid layout objects together - it doesn't
+ actually do anything itself, but is used for checking object types.
+ """
+ pass
+
+
+class CSPAN(Span):
+ """Column-span layout item. It doesn't do anything itself, but it is used
+ by the Grid layout constructor.
+ """
+ pass
+
+
+class RSPAN(Span):
+ """Row-span layout item. It doesn't do anything itself, but it is used
+ by the Grid layout constructor.
+ """
+ pass
+
+
+class HLINE(QtGui.QFrame): #qt
+ def __init__(self, pad=None):
+ # pass the pad argument thus: 'HLINE,3'
+ QtGui.QFrame.__init__(self) #qt
+ self.setFrameShape(QtGui.QFrame.HLine) #qt
+ if pad:
+ self.setFixedHeight(1 + 2*int(pad)) #qt
+
+
+class VLINE(QtGui.QFrame): #qt
+ def __init__(self, pad=None):
+ # pass the pad argument thus: 'VLINE,3'
+ QtGui.QFrame.__init__(self) #qt
+ self.setFrameShape(QtGui.QFrame.VLine) #qt
+ if pad:
+ self.setFixedWidth(1 + 2*int(pad)) #qt
+
+
+class DATA:
+ """This is not really a widget, it just holds a dictionary of
+ potentially internationalized messages.
+ """
+ def x__messages(self, mdict):
+ self.messages = mdict
+
+ def x__get(self, key):
+ return self.messages.get(key)
+
+
+class Suim(QtGui.QApplication):
+ """This class represents an application gui, possibly with more than
+ one top level window.
+ """
+ timers = [] # timer objects
+
+ def __init__(self, appname='suim', busywidgets = []):
+ global guiapp, T_
+ guiapp = self
+ QtGui.QApplication.__init__(self, []) #qt
+ self.appname = appname
+ self.eno = QtCore.QEvent.registerEventType() #qt
+ # This overcomplicated looking bit should deal with translating the built in dialogs
+ _translator = QtCore.QTranslator(self)
+ if (_translator.load('qt_'+ QtCore.QLocale.system().name(),
+ QtCore.QLibraryInfo.location(QtCore.QLibraryInfo.TranslationsPath))):
+ self.installTranslator(_translator)
+
+ # list of widgets to disable while 'busy'
+ self.busywidgets = busywidgets
+
+ self.busystate = False
+ self.busy_lock = threading.Lock()
+
+ self.setQuitOnLastWindowClosed(False) #qt
+
+ self.widgets = {} # all widgets, key = widget tag
+ self.signal_dict = {} # signal connections, key = signature
+
+ # callback list for event loop: (callback, arglist) pairs:
+ self.idle_calls = deque()
+
+
+ def event(self, e):
+ if e.type() == self.eno:
+ # Process item from list
+ cb, a = self.idle_calls.popleft()
+ cb(*a)
+ return True
+ else:
+ return QtGui.QApplication.event(self, e) #qt
+
+
+ def run(self):
+ self.exec_() #qt
+
+
+ def quit(self, cc=0):
+ # QCoreApplication provides the static function 'exit'
+ self.exit(cc) #qt
+
+
+ def addwidget(self, fullname, wo):
+ if self.widgets.has_key(fullname):
+ gui_error("Attempted to define widget '%s' twice." % fullname)
+ self.widgets[fullname] = wo
+
+
+ def getwidget(self, w):
+ widget = self.widgets.get(w)
+ if widget == None:
+ gui_warning("Unknown widget: %s" % w)
+ return widget
+
+
+ def show(self, windowname):
+ self.getwidget(windowname).setVisible()
+
+
+ def command(self, cmdtext, *args):
+ cmd = specials_table.get(cmdtext)
+ if not cmd:
+ w, m = cmdtext.split(".")
+ wo = self.getwidget(w)
+ cmd = getattr(wo, 'x__' + m)
+ return cmd(*args)
+
+
+ def widget(self, wtype, wname, args):
+ wobj = widget_table[wtype]()
+ wobj.w_name = wname
+
+ # Attributes
+ for key, val in args.iteritems():
+ handler = "x__" + key
+ if hasattr(wobj, handler):
+ getattr(wobj, handler)(val)
+# Unrecognized attributes are ignored ...
+
+ self.addwidget(wname, wobj)
+
+
+ def widgetlist(self, wlist):
+ for w in wlist:
+ # Add simple signals
+ for s in w[3:]:
+ w[2][s] = ''
+ self.widget(w[0], w[1], w[2])
+
+
+ def signal(self, source, signal, name=None, xsignal=None, convert=None):
+ """Enable or disable a signal.
+ Signal.signals is a dictionary of enabled signals.
+ The key is constructed from the widget name and the formal signal name.
+ The name of the signal which actually gets generated will be the
+ same as the key unless the 'name' parameter is set. See the
+ 'Signal' class for further details.
+ If 'name' is None (not ''!), the signal will be disabled.
+ """
+ widsig = source.w_name + '*' + signal
+ if name == None:
+ s = Signal.signals.get(widsig)
+ if not s:
+ gui_error("Can't disable signal '%s' - it's not enabled"
+ % widsig)
+ s.disconnect() # Probably not necessary in qt
+ del(Signal.signals[widsig])
+ else:
+ if Signal.signals.has_key(widsig):
+ gui_error("Signal already connected: %s" % widsig)
+ Signal.signals[widsig] = Signal(source, signal, name, xsignal,
+ convert)
+
+
+ def connect(self, signal, function):
+ if self.signal_dict.has_key(signal):
+ self.signal_dict[signal].append(function)
+ else:
+ self.signal_dict[signal] = [function]
+
+
+ def connectlist(self, *slotlist):
+ for s in slotlist:
+ self.connect(*s)
+
+
+ def disconnect(self, signal, function):
+ try:
+ l = self.signal_dict[signal]
+ l.remove(function)
+ except:
+ gui_error("Slot disconnection for signal '%s' failed"
+ % signal)
+
+
+ def sendsignal(self, name, *args):
+ # When there are no slots a debug message is output.
+ slots = self.signal_dict.get(name)
+ if slots:
+ try:
+ for slot in slots:
+ slot(*args)
+ except:
+ gui_error("Signal handling error:\n %s"
+ % traceback.format_exc())
+ else:
+ debug("Unhandled signal: %s %s" % (name, repr(args)))
+
+
+ def idle_add(self, callback, *args):
+ self.idle_calls.append((callback, args))
+ e = QtCore.QEvent(self.eno) #qt
+ self.postEvent(self, e) #qt
+
+
+ def timer(self, callback, period):
+ """Start a timer which calls the callback function on timeout.
+ Only if the callback returns True will the timer be retriggered.
+ """
+ Suim.timers.append(Timer(callback, period))
+
+
+ def busy(self, on, busycursor=True):
+ """This activates (or deactivates, for on=False) a 'busy' mechanism,
+ which can be one or both of the following:
+ Make the application's cursor change to the 'busy cursor'.
+ Disable a group of widgets.
+ There is a lock to prevent the busy state from being set when it
+ is already active, or unset it when already unset.
+ """
+ self.busy_lock.acquire()
+ if on:
+ if self.busystate:
+ self.busy_lock.release()
+ return
+ self.busycursor = busycursor
+ if busycursor:
+ self.setOverrideCursor(QtCore.Qt.BusyCursor) #qt
+ else:
+ if not self.busystate:
+ self.busy_lock.release()
+ return
+ if self.busycursor:
+ self.restoreOverrideCursor() #qt
+ self.busystate = on
+ self.busy_lock.release()
+ for wn in self.busywidgets:
+ w = self.getwidget(wn)
+ if w:
+ w.setEnabled(not on) #qt
+ else:
+ debug("*ERROR* No widget '%s'" % wn)
+
+
+class Timer(QtCore.QTimer): #qt
+ def __init__(self, timers, callback, period):
+ QtCore.QTimer.__init__(self) #qt
+ self.x_callback = callback
+ self.connect(self, QtCore.SIGNAL("timeout()"), #qt
+ self.x_timeout)
+ self.start(int(period * 1000)) #qt
+
+ def x_timeout(self):
+ if not self.x_callback():
+ self.stop() #qt
+ Suim.timers.remove(self)
+
+
+
+class Signal:
+ """Each instance represents a single connection.
+ """
+ signals = {} # Enabled signals
+
+ def __init__(self, source, signal, name, xsignal, convert):
+ """'source' is the widget object which initiates the signal.
+ 'signal' is the signal name.
+ If 'name' is given (not empty), the signal will get this as its name,
+ and this name may be used for more than one connection.
+ Otherwise the name is built from the name of the source widget and
+ the signal type as 'source*signal' and this is unique.
+ If 'name' begins with '+' an additional argument, the source
+ widget name, will be inserted at the head of the argument list.
+ 'xsignal' is a toolkit specific signal descriptor.
+ 'convert' is an optional function (default None) - toolkit specific -
+ to perform signal argument conversions.
+ """
+ self.widsig = '%s*%s' % (source.w_name, signal)
+ #+ For disconnect?
+ self.xsignal = xsignal
+ #-
+ self.convert = convert # Argument conversion function
+ self.tag = name if name else self.widsig
+ self.wname = source.w_name if self.tag[0] == '+' else None
+ if not source.connect(source, QtCore.SIGNAL(xsignal), #qt
+ self.signal):
+ gui_error("Couldn't enable signal '%s'" % self.widsig)
+
+ def signal(self, *args):
+ if self.convert:
+ args = self.convert(*args)
+ if self.wname:
+ guiapp.sendsignal(self.tag, self.wname, *args)
+ else:
+ guiapp.sendsignal(self.tag, *args)
+
+ def disconnect(self):
+ w = guiapp.getwidget(self.widsig.split('*')[0])
+ w.disconnect(w, QtCore.SIGNAL(self.xsignal), self.signal) #qt
+
+
+
+#+++++++++++++++++++++++++++
+# Catch all unhandled errors.
+def errorTrap(type, value, tb):
+ etext = "".join(traceback.format_exception(type, value, tb))
+ debug(etext)
+ gui_error(etext, "This error could not be handled.")
+
+sys.excepthook = errorTrap
+#---------------------------
+
+widget_table = {
+ "DATA": DATA,
+ "Window": Window,
+ "Dialog": Dialog,
+ "DialogButtons": DialogButtons,
+ "Notebook": Notebook,
+ "Stack": Stack,
+ "Page": Page,
+ "Frame": Frame,
+ "Button": Button,
+ "ToggleButton": ToggleButton,
+ "RadioButton": RadioButton,
+ "CheckBox": CheckBox,
+ "Label": Label,
+ "CheckList": CheckList,
+ "List": List,
+ "OptionalFrame": OptionalFrame,
+ "ComboBox": ComboBox,
+ "ListChoice": ListChoice,
+ "LineEdit": LineEdit,
+ "TextEdit": TextEdit,
+ "HtmlView": HtmlView,
+ "SpinBox": SpinBox,
+ "ProgressBar": ProgressBar,
+}
+
+specials_table = {
+ "textLineDialog": textLineDialog,
+ "infoDialog": infoDialog,
+ "confirmDialog": confirmDialog,
+ "errorDialog": gui_error,
+ "warningDialog": gui_warning,
+ "fileDialog_getdir": fileDialog_getdir,
+ "fileDialog_open": fileDialog_open,
+ "fileDialog_save": fileDialog_save,
+ "listDialog": listDialog,
+}
+
+layout_table = {
+ "VBOX": VBOX,
+ "HBOX": HBOX,
+ "GRID": GRID,
+# "+": GRIDROW,
+ "-": CSPAN,
+ "|": RSPAN,
+ "*": SPACE,
+ "VLINE": VLINE,
+ "HLINE": HLINE,
+}
+
generated by cgit v0.12 at 2024-06-27 09:19:49 (GMT)