python的GTK的示例demo

#!/usr/bin/env python """Text Widget/TextView The GtkTextView widget displays a GtkTextBuffer. One GtkTextBuffer can be displayed by multiple GtkTextViews. This demo has two views displaying a single buffer, and shows off the widget's text formatting features.""" # pygtk version: Maik Hertha <maik.hertha@berlin.de> import os import sys import gobject import gtk gray50_width = 2 gray50_height = 2 gray50_bits = '\x02\x01' GTKLOGO_IMAGE = os.path.join(os.path.dirname(__file__), 'images', 'gtk-logo-rgb.gif') FLOPPYBUDDY_IMAGE = os.path.join(os.path.dirname(__file__), 'images', 'floppybuddy.gif') class TextViewDemo(gtk.Window): def __init__(self, parent=None): # Create the toplevel window gtk.Window.__init__(self) try: self.set_screen(parent.get_screen()) except AttributeError: self.connect('destroy', lambda *w: gtk.main_quit()) self.set_title(self.__class__.__name__) self.set_default_size(450, 450) self.set_border_width(0) vpaned = gtk.VPaned() vpaned.set_border_width(5) self.add(vpaned) # For convenience, we just use the autocreated buffer from # the first text view; you could also create the buffer # by itself with gtk.text_buffer_new(), then later create # a view widget. view1 = gtk.TextView(); buffer_1 = view1.get_buffer() view2 = gtk.TextView(buffer_1) sw = gtk.ScrolledWindow() sw.set_shadow_type(gtk.SHADOW_ETCHED_IN) sw.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC) vpaned.add1(sw) sw.add(view1) sw = gtk.ScrolledWindow() sw.set_shadow_type(gtk.SHADOW_ETCHED_IN) sw.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC) vpaned.add2(sw) sw.add(view2) self.create_tags(buffer_1) self.insert_text(buffer_1) self.attach_widgets(view1) self.attach_widgets(view2) self.win = None self.show_all() def create_tags(self, text_buffer): ''' Create a bunch of tags. Note that it's also possible to create tags with gtk.text_tag_new() then add them to the tag table for the buffer, text_buffer.create_tag() is just a convenience function. Also note that you don't have to give tags a name; pass None for the name to create an anonymous tag. In any real app, another useful optimization would be to create a GtkTextTagTable in advance, and reuse the same tag table for all the buffers with the same tag set, instead of creating new copies of the same tags for every buffer. Tags are assigned default priorities in order of addition to the tag table. That is, tags created later that affect the same text property affected by an earlier tag will override the earlier tag. You can modify tag priorities with gtk.text_tag_set_priority(). ''' import pango text_buffer.create_tag("heading", weight=pango.WEIGHT_BOLD, size=15 * pango.SCALE) text_buffer.create_tag("italic", style=pango.STYLE_ITALIC) text_buffer.create_tag("bold", weight=pango.WEIGHT_BOLD) # points times the pango.SCALE factor text_buffer.create_tag("big", size=20 * pango.SCALE) text_buffer.create_tag("xx-small", scale=pango.SCALE_XX_SMALL) text_buffer.create_tag("x-large", scale=pango.SCALE_X_LARGE) text_buffer.create_tag("monospace", family="monospace") text_buffer.create_tag("blue_foreground", foreground="blue") text_buffer.create_tag("red_background", background="red") stipple = gtk.gdk.bitmap_create_from_data(None, gray50_bits, gray50_width, gray50_height) text_buffer.create_tag("background_stipple", background_stipple=stipple) text_buffer.create_tag("foreground_stipple", foreground_stipple=stipple) text_buffer.create_tag("big_gap_before_line", pixels_above_lines=30) text_buffer.create_tag("big_gap_after_line", pixels_below_lines=30) text_buffer.create_tag("double_spaced_line", pixels_inside_wrap=10) text_buffer.create_tag("not_editable", editable=False) text_buffer.create_tag("word_wrap", wrap_mode=gtk.WRAP_WORD) text_buffer.create_tag("char_wrap", wrap_mode=gtk.WRAP_CHAR) text_buffer.create_tag("no_wrap", wrap_mode=gtk.WRAP_NONE) text_buffer.create_tag("center", justification=gtk.JUSTIFY_CENTER) text_buffer.create_tag("right_justify", justification=gtk.JUSTIFY_RIGHT) text_buffer.create_tag("wide_margins", left_margin=50, right_margin=50) text_buffer.create_tag("strikethrough", strikethrough=True) text_buffer.create_tag("underline", underline=pango.UNDERLINE_SINGLE) text_buffer.create_tag("double_underline", underline=pango.UNDERLINE_DOUBLE) text_buffer.create_tag("superscript", rise=10 * pango.SCALE, # 10 pixels size=8 * pango.SCALE) # 8 points text_buffer.create_tag("subscript", rise=-10 * pango.SCALE, # 10 pixels size=8 * pango.SCALE) # 8 points text_buffer.create_tag("rtl_quote", wrap_mode=gtk.WRAP_WORD, direction=gtk.TEXT_DIR_RTL, indent=30, left_margin=20, right_margin=20) def insert_text(self, text_buffer): # use the current directory for the file try: pixbuf = gtk.gdk.pixbuf_new_from_file(GTKLOGO_IMAGE) except gobject.GError, error: sys.exit("Failed to load image file gtk-logo-rgb.gif\n") scaled = pixbuf.scale_simple(32, 32, 'bilinear') pixbuf = scaled # get start of buffer; each insertion will revalidate the # iterator to point to just after the inserted text. iter = text_buffer.get_iter_at_offset(0) text_buffer.insert(iter, "The text widget can display text with " "all kinds of nifty attributes. It also supports multiple views " "of the same buffer; this demo is showing the same buffer in " "two places.\n\n") text_buffer.insert_with_tags_by_name(iter, "Font styles. ", "heading") text_buffer.insert(iter, "For example, you can have ") text_buffer.insert_with_tags_by_name(iter, "italic", "italic") text_buffer.insert(iter, ", "); text_buffer.insert_with_tags_by_name(iter, "bold", "bold") text_buffer.insert(iter, ", or ", -1) text_buffer.insert_with_tags_by_name(iter, "monospace(typewriter)", "monospace") text_buffer.insert(iter, ", or ") text_buffer.insert_with_tags_by_name(iter, "big", "big") text_buffer.insert(iter, " text. ") text_buffer.insert(iter, "It's best not to hardcode specific text " "sizes; you can use relative sizes as with CSS, such as ") text_buffer.insert_with_tags_by_name(iter, "xx-small", "xx-small") text_buffer.insert(iter, " or ") text_buffer.insert_with_tags_by_name(iter, "x-large", "x-large") text_buffer.insert(iter, " to ensure that your program properly " "adapts if the user changes the default font size.\n\n") text_buffer.insert_with_tags_by_name(iter, "Colors. ", "heading") text_buffer.insert(iter, "Colors such as "); text_buffer.insert_with_tags_by_name(iter, "a blue foreground", "blue_foreground") text_buffer.insert(iter, " or "