built-in keyboard

ks_includes/widgets/keyboard.py

@@ -0,0 +1,110 @@
+import gi
+
+gi.require_version("Gtk", "3.0")
+from gi.repository import Gtk, GLib
+
+
+class Keyboard(Gtk.Box):
+    def __init__(self, screen, close_cb, entry=None):
+        super().__init__(orientation=Gtk.Orientation.VERTICAL)
+        _ = screen.lang.gettext
+        self._gtk = screen.gtk
+        self.close_cb = close_cb
+        self.keyboard = Gtk.Grid()
+        self.keyboard.set_direction(Gtk.TextDirection.LTR)
+        self.timeout = self.clear_timeout = None
+        self.entry = entry
+
+        self.keys = [
+            [["q", "w", "e", "r", "t", "y", "u", "i", "o", "p", "⌫"],
+             ["a", "s", "d", "f", "g", "h", "j", "k", "l", "'"],
+             ["ABC", "z", "x", "c", "v", "b", "n", "m", ",", ".", "?123"],
+             ["✕", " ", "✔"]
+             ],
+            [["Q", "W", "E", "R", "T", "Y", "U", "I", "O", "P", "⌫"],
+             ["A", "S", "D", "F", "G", "H", "J", "K", "L", "'"],
+             ["?123", "Z", "X", "C", "V", "B", "N", "M", ",", ".", "abc"],
+             ["✕", " ", "✔"]
+             ],
+            [["1", "2", "3", "4", "5", "6", "7", "8", "9", "0", "⌫"],
+             ["=", "-", "+", "*", "/", "\\", ":", ";", "'", "\""],
+             ["abc", "(", ")", "#", "$", "!", "?", "@", "_", ",", "ABC"],
+             ["✕", " ", "✔"]
+             ]
+        ]
+
+        self.labels = self.keys.copy()
+        for p, pallet in enumerate(self.keys):
+            for r, row in enumerate(pallet):
+                for k, key in enumerate(row):
+                    self.labels[p][r][k] = self._gtk.Button(key)
+                    self.labels[p][r][k].set_hexpand(True)
+                    self.labels[p][r][k].set_vexpand(True)
+                    self.labels[p][r][k].connect('button-press-event', self.repeat, key)
+                    self.labels[p][r][k].connect('button-release-event', self.release)
+                    self.labels[p][r][k].get_style_context().add_class("keyboard_pad")
+
+        self.pallet_nr = 0
+        self.set_pallet(self.pallet_nr)
+        self.add(self.keyboard)
+
+    def set_pallet(self, p):
+        pallet = self.keys[p]
+        span = 2
+        for r, row in enumerate(pallet[:-1]):
+            for k, key in enumerate(row):
+                x = k * 2 + 1 if r == 1 else k * 2
+                old = self.keyboard.get_child_at(x, r)
+                if old:
+                    self.keyboard.remove(old)
+                self.keyboard.attach(self.labels[p][r][k], x, r, span, 1)
+        if not self.keyboard.get_child_at(0, 4):
+            self.keyboard.attach(self.labels[p][3][0], 0, 4, 3, 1)
+            self.keyboard.attach(self.labels[p][3][1], 3, 4, 16, 1)
+            self.keyboard.attach(self.labels[p][3][2], 19, 4, 3, 1)
+        self.show_all()
+
+    def repeat(self, widget, event, key):
+        # Button-press
+        self.update_entry(widget, key)
+        if self.timeout is None and key == "⌫":
+            # Hold for repeat, hold longer to clear the field
+            self.clear_timeout = GLib.timeout_add_seconds(3, self.clear, widget)
+            # This can be used to repeat all the keys,
+            # but I don't find it useful on the console
+            self.timeout = GLib.timeout_add(400, self.repeat, widget, None, key)
+        return True
+
+    def release(self, widget, event):
+        # Button-release
+        if self.timeout is not None:
+            GLib.source_remove(self.timeout)
+            self.timeout = None
+        if self.clear_timeout is not None:
+            GLib.source_remove(self.clear_timeout)
+            self.clear_timeout = None
+
+    def clear(self, widget=None):
+        self.entry.set_text("")
+        if self.clear_timeout is not None:
+            GLib.source_remove(self.clear_timeout)
+            self.clear_timeout = None
+
+    def update_entry(self, widget, key):
+        if key == "⌫":
+            Gtk.Entry.do_backspace(self.entry)
+        elif key == "✔":
+            self.close_cb()
+            return
+        elif key == "✕":
+            self.clear()
+            self.close_cb()
+            return
+        elif key == "abc":
+            self.set_pallet(0)
+        elif key == "ABC":
+            self.set_pallet(1)
+        elif key == "?123":
+            self.set_pallet(2)
+        else:
+            Gtk.Entry.do_insert_at_cursor(self.entry, key)