#!/usr/bin/env python # -*- Mode: Python; py-indent-offset: 4 -*- # vim: tabstop=4 shiftwidth=4 expandtab # # Copyright (C) 2010 Red Hat, Inc., John (J5) Palmieri # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2.1 of the License, or (at your option) any later version. # # This library 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 # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 # USA import codecs import os import sys import textwrap import gi gi.require_version('Gtk', '3.0') gi.require_version('Pango', '1.0') gi.require_version('PangoCairo', '1.0') gi.require_version('GdkPixbuf', '2.0') gi.require_version('GtkSource', '4') from gi.repository import GLib, GObject, Pango, GdkPixbuf, Gtk, Gio try: from gi.repository import GtkSource GtkSource # PyFlakes except ImportError: GtkSource = None DEMOROOTDIR = os.path.abspath(os.path.dirname(__file__)) DEMOCODEDIR = os.path.join(DEMOROOTDIR, 'demos') sys.path.insert(0, DEMOROOTDIR) class Demo(GObject.GObject): __gtype_name__ = 'GtkDemo' def __init__(self, title, module, filename): super(Demo, self).__init__() self.title = title self.module = module self.filename = filename @classmethod def new_from_file(cls, path): relpath = os.path.relpath(path, DEMOROOTDIR) packagename = os.path.dirname(relpath).replace(os.sep, '.') modulename = os.path.basename(relpath)[0:-3] package = __import__(packagename, globals(), locals(), [modulename], 0) module = getattr(package, modulename) try: return cls(module.title, module, path) except AttributeError as e: raise AttributeError('(%s): %s' % (path, e.message)) class DemoTreeStore(Gtk.TreeStore): __gtype_name__ = 'GtkDemoTreeStore' def __init__(self, *args): super(DemoTreeStore, self).__init__(str, Demo, Pango.Style) self._parent_nodes = {} for filename in self._list_dir(DEMOCODEDIR): fullpath = os.path.join(DEMOCODEDIR, filename) initfile = os.path.join(os.path.dirname(fullpath), '__init__.py') if fullpath != initfile and os.path.isfile(initfile) and fullpath.endswith('.py'): parentname = os.path.dirname(os.path.relpath(fullpath, DEMOCODEDIR)) if parentname: parent = self._get_parent_node(parentname) else: parent = None demo = Demo.new_from_file(fullpath) self.append(parent, (demo.title, demo, Pango.Style.NORMAL)) def _list_dir(self, path): demo_file_list = [] for filename in os.listdir(path): fullpath = os.path.join(path, filename) if os.path.isdir(fullpath): demo_file_list.extend(self._list_dir(fullpath)) elif os.path.isfile(fullpath): demo_file_list.append(fullpath) return sorted(demo_file_list, key=str.lower) def _get_parent_node(self, name): if name not in self._parent_nodes.keys(): node = self.append(None, (name, None, Pango.Style.NORMAL)) self._parent_nodes[name] = node return self._parent_nodes[name] class GtkDemoApp(Gtk.Application): __gtype_name__ = 'GtkDemoWindow' def __init__(self): super(GtkDemoApp, self).__init__(application_id='org.gnome.pygobject.gtkdemo') # Use a GResource to hold the CSS files. Resource bundles are created by # the glib-compile-resources program shipped with Glib which takes an xml # file that describes the bundle, and a set of files that the xml # references. These are combined into a binary resource bundle. base_path = os.path.abspath(os.path.dirname(__file__)) resource_path = os.path.join(base_path, 'demos/data/demo.gresource') resource = Gio.Resource.load(resource_path) # FIXME: method register() should be without the underscore # FIXME: see https://bugzilla.gnome.org/show_bug.cgi?id=684319 # Once the resource has been globally registered it can be used # throughout the application. resource._register() def on_activate(self, app): self.window = Gtk.ApplicationWindow.new(self) self.window.set_title('PyGObject GTK Code Demos') self.window.set_default_size(600, 400) self.setup_default_icon() self.header_bar = Gtk.HeaderBar(show_close_button=True, subtitle='Foobar') self.window.set_titlebar(self.header_bar) stack = Gtk.Stack(transition_type=Gtk.StackTransitionType.SLIDE_LEFT_RIGHT, homogeneous=True) switcher = Gtk.StackSwitcher(stack=stack, halign=Gtk.Align.CENTER) self.header_bar.set_custom_title(switcher) hbox = Gtk.Box(orientation=Gtk.Orientation.HORIZONTAL, homogeneous=False, spacing=0) self.window.add(hbox) tree = self.create_tree() hbox.pack_start(child=tree, expand=False, fill=False, padding=0) hbox.pack_start(child=stack, expand=True, fill=True, padding=0) text_widget, info_buffer = self.create_text_view() stack.add_titled(text_widget, name='info', title='Info') self.info_buffer = info_buffer self.info_buffer.create_tag('title', font='Sans 18') text_widget, self.source_buffer = self.create_source_view() stack.add_titled(text_widget, name='source', title='Source') self.window.show_all() self.selection_cb(self.tree_view.get_selection(), self.tree_view.get_model()) def find_file(self, base=''): dir = os.path.join(DEMOCODEDIR, 'data') logo_file = os.path.join(dir, 'gtk-logo-rgb.gif') base_file = os.path.join(dir, base) if (GLib.file_test(logo_file, GLib.FileTest.EXISTS) and GLib.file_test(base_file, GLib.FileTest.EXISTS)): return base_file else: filename = os.path.join(DEMOCODEDIR, base) if GLib.file_test(filename, GLib.FileTest.EXISTS): return filename # can't find the file raise IOError('Cannot find demo data file "%s"' % base) def setup_default_icon(self): filename = self.find_file('gtk-logo-rgb.gif') pixbuf = GdkPixbuf.Pixbuf.new_from_file(filename) transparent = pixbuf.add_alpha(True, 0xff, 0xff, 0xff) list = [] list.append(transparent) Gtk.Window.set_default_icon_list(list) def selection_cb(self, selection, model): sel = selection.get_selected() if sel == (): return treeiter = sel[1] title = model.get_value(treeiter, 0) demo = model.get_value(treeiter, 1) if demo is None: return # Split into paragraphs based on double newlines and use # textwrap to strip out all other formatting whitespace description = '' for paragraph in demo.module.description.split('\n\n'): description += '\n'.join(textwrap.wrap(paragraph, 99999)) description += '\n\n' # Add paragraphs back in f = codecs.open(demo.filename, 'rU', 'utf-8') code = f.read() f.close() # output and style the title (start, end) = self.info_buffer.get_bounds() self.info_buffer.delete(start, end) (start, end) = self.source_buffer.get_bounds() self.source_buffer.delete(start, end) start = self.info_buffer.get_iter_at_offset(0) end = start.copy() self.info_buffer.insert(end, title) start = end.copy() start.backward_chars(len(title)) self.info_buffer.apply_tag_by_name('title', start, end) self.info_buffer.insert(end, '\n') # output the description self.info_buffer.insert(end, description) # output the code start = self.source_buffer.get_iter_at_offset(0) end = start.copy() self.source_buffer.insert(end, code) def row_activated_cb(self, view, path, col, store): iter = store.get_iter(path) demo = store.get_value(iter, 1) if demo is not None: store.set_value(iter, 2, Pango.Style.ITALIC) try: demo.module.main(self) finally: store.set_value(iter, 2, Pango.Style.NORMAL) def create_tree(self): tree_store = DemoTreeStore() tree_view = Gtk.TreeView() self.tree_view = tree_view tree_view.set_model(tree_store) selection = tree_view.get_selection() selection.set_mode(Gtk.SelectionMode.BROWSE) tree_view.set_size_request(200, -1) cell = Gtk.CellRendererText() column = Gtk.TreeViewColumn(title='Widget (double click for demo)', cell_renderer=cell, text=0, style=2) first_iter = tree_store.get_iter_first() if first_iter is not None: selection.select_iter(first_iter) selection.connect('changed', self.selection_cb, tree_store) tree_view.connect('row_activated', self.row_activated_cb, tree_store) tree_view.append_column(column) tree_view.expand_all() tree_view.set_headers_visible(False) scrolled_window = Gtk.ScrolledWindow(hadjustment=None, vadjustment=None) scrolled_window.set_policy(Gtk.PolicyType.NEVER, Gtk.PolicyType.AUTOMATIC) scrolled_window.add(tree_view) label = Gtk.Label(label='Widget (double click for demo)') box = Gtk.Notebook() box.append_page(scrolled_window, label) tree_view.grab_focus() return box def create_scrolled_window(self): scrolled_window = Gtk.ScrolledWindow(hadjustment=None, vadjustment=None) scrolled_window.set_policy(Gtk.PolicyType.AUTOMATIC, Gtk.PolicyType.AUTOMATIC) scrolled_window.set_shadow_type(Gtk.ShadowType.IN) return scrolled_window def create_text_view(self): text_view = Gtk.TextView() buffer = Gtk.TextBuffer() text_view.set_buffer(buffer) text_view.set_editable(False) text_view.set_cursor_visible(False) scrolled_window = self.create_scrolled_window() scrolled_window.add(text_view) text_view.set_wrap_mode(Gtk.WrapMode.WORD) text_view.set_pixels_above_lines(2) text_view.set_pixels_below_lines(2) return scrolled_window, buffer def create_source_view(self): font_desc = Pango.FontDescription('monospace 11') if GtkSource: lang_mgr = GtkSource.LanguageManager() lang = lang_mgr.get_language('python') buffer = GtkSource.Buffer() buffer.set_language(lang) buffer.set_highlight_syntax(True) view = GtkSource.View() view.set_buffer(buffer) view.set_show_line_numbers(True) scrolled_window = self.create_scrolled_window() scrolled_window.add(view) else: scrolled_window, buffer = self.create_text_view() view = scrolled_window.get_child() view.modify_font(font_desc) view.set_wrap_mode(Gtk.WrapMode.NONE) return scrolled_window, buffer def run(self, argv): self.connect('activate', self.on_activate) return super(GtkDemoApp, self).run(argv) def main(argv): """Entry point for demo manager""" app = GtkDemoApp() return app.run(argv) if __name__ == '__main__': SystemExit(main(sys.argv))