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Create custom TextView widget (#363)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,96 @@ | ||
| # Copyright 2023 Mufeed Ali | ||
| # Copyright 2023 Rafael Mardojai CM | ||
| # Copyright 2023 Libretto | ||
| # SPDX-License-Identifier: GPL-3.0-or-later | ||
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| from gi.repository import Gdk, GObject, Gtk | ||
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| class TextView(Gtk.TextView): | ||
| __gtype_name__ = 'TextView' | ||
| __gsignals__ = {'activate': (GObject.SIGNAL_RUN_FIRST, None, ())} | ||
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| activate_mod: bool = GObject.Property(type=bool, default=True) | ||
| """If activation requieres the mod key""" | ||
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| def __init__(self, **kwargs): | ||
| super().__init__(**kwargs) | ||
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| # Set word/char text wrapping | ||
| self.props.wrap_mode = Gtk.WrapMode.WORD_CHAR | ||
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| # Key press controller | ||
| key_ctrlr = Gtk.EventControllerKey() | ||
| key_ctrlr.connect('key-pressed', self._on_key_pressed) | ||
| self.add_controller(key_ctrlr) | ||
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| # Scroll controller | ||
| scroll_ctrlr = Gtk.EventControllerScroll.new(Gtk.EventControllerScrollFlags.VERTICAL) | ||
| scroll_ctrlr.connect('scroll', self._on_scroll) | ||
| self.add_controller(scroll_ctrlr) | ||
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| # Custom font | ||
| self._font_size = int( | ||
| Gtk.Settings.get_default().get_property('gtk-font-name').split()[1] | ||
| ) | ||
| self._font_css_provider = Gtk.CssProvider() | ||
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| # Add font CSS provider | ||
| self.get_style_context().add_provider( | ||
| self._font_css_provider, Gtk.STYLE_PROVIDER_PRIORITY_USER | ||
| ) | ||
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| @GObject.Property(type=int) | ||
| def font_size(self) -> int: | ||
| return self._font_size | ||
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| @font_size.setter | ||
| def font_size(self, value: int): | ||
| # Save value | ||
| self._font_size = value | ||
| # Update CSS | ||
| self._font_css_provider.load_from_data(f'textview {{ font-size: { str(value) }pt; }}') | ||
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| def font_size_inc(self): | ||
| self.font_size += 5 | ||
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| def font_size_dec(self): | ||
| new_size = self.font_size - 5 | ||
| if new_size >= 6: | ||
| self.font_size = new_size | ||
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| def _on_key_pressed(self, _button, keyval, _keycode, state): | ||
| modifiers = state & Gtk.accelerator_get_default_mod_mask() | ||
| control_mask = Gdk.ModifierType.CONTROL_MASK | ||
| enter_keys = (Gdk.KEY_Return, Gdk.KEY_KP_Enter) | ||
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| # Activate with mod key pressed | ||
| if control_mask == modifiers: | ||
| if keyval in enter_keys: | ||
| if self.activate_mod: | ||
| self.emit('activate') | ||
| return Gdk.EVENT_STOP | ||
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| # Activate without mod key pressed | ||
| elif keyval in enter_keys: | ||
| if not self.activate_mod: | ||
| self.emit('activate') | ||
| return Gdk.EVENT_STOP | ||
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| return Gdk.EVENT_PROPAGATE | ||
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| def _on_scroll(self, ctrl: Gtk.EventControllerScroll, _dx: float, dy: float): | ||
| state = ctrl.get_current_event_state() | ||
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| # If Control modifier is pressed | ||
| if state == Gdk.ModifierType.CONTROL_MASK: | ||
| if dy > 0: | ||
| self.font_size_dec() | ||
| else: | ||
| self.font_size_inc() | ||
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| # Stop propagation | ||
| return Gdk.EVENT_STOP | ||
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| # Propagate event (scrolled window, etc) | ||
| return Gdk.EVENT_PROPAGATE |
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