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import gi
gi.require_version("Gtk", "4.0")
from gi.repository import Gtk, Pango
class SearchDialog(Gtk.Window):
def __init__(self, parent):
super().__init__(title="Search", transient_for=parent)
box = Gtk.Box(orientation=Gtk.Orientation.VERTICAL, spacing=12)
self.set_child(box)
label = Gtk.Label(label="Insert text you want to search for:")
box.append(label)
self.entry = Gtk.Entry()
box.append(self.entry)
self.button = Gtk.Button(label="Find")
box.append(self.button)
class TextViewWindow(Gtk.ApplicationWindow):
def __init__(self, **kargs):
super().__init__(**kargs, title="TextView Demo")
self.set_default_size(500, 400)
self.box = Gtk.Box(orientation=Gtk.Orientation.VERTICAL, spacing=6)
self.set_child(self.box)
self.create_textview()
self.create_toolbar()
self.create_buttons()
def create_toolbar(self):
toolbar = Gtk.Box(spacing=6)
toolbar.props.margin_top = 6
toolbar.props.margin_start = 6
toolbar.props.margin_end = 6
self.box.prepend(toolbar)
button_bold = Gtk.Button(icon_name="format-text-bold-symbolic")
toolbar.append(button_bold)
button_italic = Gtk.Button(icon_name="format-text-italic-symbolic")
toolbar.append(button_italic)
button_underline = Gtk.Button(icon_name="format-text-underline-symbolic")
toolbar.append(button_underline)
button_bold.connect("clicked", self.on_button_clicked, self.tag_bold)
button_italic.connect("clicked", self.on_button_clicked, self.tag_italic)
button_underline.connect("clicked", self.on_button_clicked, self.tag_underline)
toolbar.append(Gtk.Separator())
justifyleft = Gtk.ToggleButton(icon_name="format-justify-left-symbolic")
toolbar.append(justifyleft)
justifycenter = Gtk.ToggleButton(icon_name="format-justify-center-symbolic")
justifycenter.set_group(justifyleft)
toolbar.append(justifycenter)
justifyright = Gtk.ToggleButton(icon_name="format-justify-right-symbolic")
justifyright.set_group(justifyleft)
toolbar.append(justifyright)
justifyfill = Gtk.ToggleButton(icon_name="format-justify-fill-symbolic")
justifyfill.set_group(justifyleft)
toolbar.append(justifyfill)
justifyleft.connect("toggled", self.on_justify_toggled, Gtk.Justification.LEFT)
justifycenter.connect(
"toggled", self.on_justify_toggled, Gtk.Justification.CENTER
)
justifyright.connect(
"toggled", self.on_justify_toggled, Gtk.Justification.RIGHT
)
justifyfill.connect("toggled", self.on_justify_toggled, Gtk.Justification.FILL)
toolbar.append(Gtk.Separator())
button_clear = Gtk.Button(icon_name="edit-clear-symbolic")
button_clear.connect("clicked", self.on_clear_clicked)
toolbar.append(button_clear)
toolbar.append(Gtk.Separator())
button_search = Gtk.Button(icon_name="system-search-symbolic")
button_search.connect("clicked", self.on_search_clicked)
toolbar.append(button_search)
def create_textview(self):
scrolledwindow = Gtk.ScrolledWindow()
scrolledwindow.props.hexpand = True
scrolledwindow.props.vexpand = True
self.box.append(scrolledwindow)
self.textview = Gtk.TextView()
self.textbuffer = self.textview.get_buffer()
self.textbuffer.set_text(
"This is some text inside of a Gtk.TextView. "
+ 'Select text and click one of the buttons "bold", "italic", '
+ 'or "underline" to modify the text accordingly.'
)
scrolledwindow.set_child(self.textview)
self.tag_bold = self.textbuffer.create_tag("bold", weight=Pango.Weight.BOLD)
self.tag_italic = self.textbuffer.create_tag("italic", style=Pango.Style.ITALIC)
self.tag_underline = self.textbuffer.create_tag(
"underline", underline=Pango.Underline.SINGLE
)
self.tag_found = self.textbuffer.create_tag("found", background="yellow")
def create_buttons(self):
grid = Gtk.Grid()
self.box.append(grid)
check_editable = Gtk.CheckButton(label="Editable")
check_editable.props.active = True
check_editable.connect("toggled", self.on_editable_toggled)
grid.attach(check_editable, 0, 0, 1, 1)
check_cursor = Gtk.CheckButton(label="Cursor Visible")
check_cursor.props.active = True
check_editable.connect("toggled", self.on_cursor_toggled)
grid.attach_next_to(check_cursor, check_editable, Gtk.PositionType.RIGHT, 1, 1)
radio_wrapnone = Gtk.CheckButton(label="No Wrapping")
radio_wrapnone.props.active = True
grid.attach(radio_wrapnone, 0, 1, 1, 1)
radio_wrapchar = Gtk.CheckButton(label="Character Wrapping")
radio_wrapchar.set_group(radio_wrapnone)
grid.attach_next_to(
radio_wrapchar, radio_wrapnone, Gtk.PositionType.RIGHT, 1, 1
)
radio_wrapword = Gtk.CheckButton(label="Word Wrapping")
radio_wrapword.set_group(radio_wrapnone)
grid.attach_next_to(
radio_wrapword, radio_wrapchar, Gtk.PositionType.RIGHT, 1, 1
)
radio_wrapnone.connect("toggled", self.on_wrap_toggled, Gtk.WrapMode.NONE)
radio_wrapchar.connect("toggled", self.on_wrap_toggled, Gtk.WrapMode.CHAR)
radio_wrapword.connect("toggled", self.on_wrap_toggled, Gtk.WrapMode.WORD)
def on_button_clicked(self, _widget, tag):
bounds = self.textbuffer.get_selection_bounds()
if len(bounds) != 0:
start, end = bounds
self.textbuffer.apply_tag(tag, start, end)
def on_clear_clicked(self, _widget):
start = self.textbuffer.get_start_iter()
end = self.textbuffer.get_end_iter()
self.textbuffer.remove_all_tags(start, end)
def on_editable_toggled(self, widget):
self.textview.props.editable = widget.props.active
def on_cursor_toggled(self, widget):
self.textview.props.cursor_visible = widget.props.active
def on_wrap_toggled(self, _widget, mode):
self.textview.props.wrap_mode = mode
def on_justify_toggled(self, _widget, justification):
self.textview.props.justification = justification
def on_search_clicked(self, _widget):
self.search_dialog = SearchDialog(self)
self.search_dialog.button.connect("clicked", self.on_find_clicked)
self.search_dialog.present()
def on_find_clicked(self, _button):
cursor_mark = self.textbuffer.get_insert()
start = self.textbuffer.get_iter_at_mark(cursor_mark)
if start.get_offset() == self.textbuffer.get_char_count():
start = self.textbuffer.get_start_iter()
self.search_and_mark(self.search_dialog.entry.get_text(), start)
def search_and_mark(self, text, start):
end = self.textbuffer.get_end_iter()
match = start.forward_search(text, 0, end)
if match is not None:
match_start, match_end = match
self.textbuffer.apply_tag(self.tag_found, match_start, match_end)
self.search_and_mark(text, match_end)
def on_activate(app):
win = TextViewWindow(application=app)
win.present()
app = Gtk.Application(application_id="com.example.App")
app.connect("activate", on_activate)
app.run(None)
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