tuikit/menubar.py
author Radek Brich <radek.brich@devl.cz>
Sun, 22 Feb 2015 09:53:13 +0100
changeset 119 dd91747504dd
parent 64 03f591f5fe5c
permissions -rw-r--r--
Redraw widgets on request. Add scrollbar demo.
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# -*- coding: utf-8 -*-
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from tuikit.layout import HorizontalLayout
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from tuikit.button import Button
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from tuikit.container import Container
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class MenuButton(Container, Button):
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    def __init__(self, label='', menu=None):
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        Container.__init__(self)
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        Button.__init__(self, label)
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        if menu:
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            self.menu = menu
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    @property
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    def menu(self):
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        return self.children[0]
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    @menu.setter
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    def menu(self, widget):
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        self.add_floater(widget)
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        widget.move(0, 1)
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        widget.hide()
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    def on_keypress(self, ev):
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        if ev.keyname == 'escape':
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            if not self.menu.hidden:
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                self.menu.hide()
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                return True
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    def on_click(self, ev):
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        self.menu.show()
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    def on_unfocus(self, ev):
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        self.menu.hide()
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    def show_menu(self):
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        if not self.menu.hidden:
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            return False
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        self.menu.show()
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        return True
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class MenuBar(HorizontalLayout):
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    def __init__(self, items = []):
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        HorizontalLayout.__init__(self, spacing=4)
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        self._default_size.update(20, 1)
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        self.allow_focus = True
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        self.bg = 'menu'
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        self.highlight = 'menu-active'
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        for title, widget in items:
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            self.add_menu(title, widget)
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    def add_menu(self, title, widget):
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        btn = MenuButton(title)
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        btn.menu = widget
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        btn.bg = self.bg
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        btn.bghi = self.highlight
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        btn.prefix = ''
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        btn.suffix = ''
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        self.add(btn)
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    def on_draw(self, ev):
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        ev.driver.pushcolor(self.bg)
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        ev.driver.puts(ev.x, ev.y, ' ' * self.width)
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        ev.driver.popcolor()
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    def on_keypress(self, ev):
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        # do we have some menu dropped down?
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        menu_visible = not self.focuschild.menu.hidden
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        if ev.keyname == 'left':
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            res = self.focus_previous()
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            if menu_visible:
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                return self.focuschild.show_menu()
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            return res
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        elif ev.keyname == 'right':
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            res = self.focus_next()
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            if menu_visible:
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                return self.focuschild.show_menu()
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            return res
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        elif ev.keyname == 'down':
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            return self.focuschild.show_menu()
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