diff options
Diffstat (limited to 'grc/gui/DrawingArea.py')
| -rw-r--r-- | grc/gui/DrawingArea.py | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/grc/gui/DrawingArea.py b/grc/gui/DrawingArea.py index 94dfcf1370..2403fa2844 100644 --- a/grc/gui/DrawingArea.py +++ b/grc/gui/DrawingArea.py @@ -23,6 +23,7 @@ from gi.repository import Gtk, Gdk from .canvas.colors import FLOWGRAPH_BACKGROUND_COLOR from . import Constants +from . import Actions class DrawingArea(Gtk.DrawingArea): @@ -42,6 +43,7 @@ class DrawingArea(Gtk.DrawingArea): Gtk.DrawingArea.__init__(self) self._flow_graph = flow_graph + self.set_property('can_focus', True) self.zoom_factor = 1.0 self._update_after_zoom = False @@ -66,6 +68,11 @@ class DrawingArea(Gtk.DrawingArea): # Gdk.EventMask.FOCUS_CHANGE_MASK ) + # This may not be the correct place to be handling the user events + # Should this be in the page instead? + # Or should more of the page functionality move here? + self.connect('key_press_event', self._handle_key_press) + # setup drag and drop self.drag_dest_set(Gtk.DestDefaults.ALL, [], Gdk.DragAction.COPY) self.connect('drag-data-received', self._handle_drag_data_received) @@ -78,12 +85,14 @@ class DrawingArea(Gtk.DrawingArea): def _handle_notify_event(widget, event, focus_flag): self._focus_flag = focus_flag + self.connect('leave-notify-event', _handle_notify_event, False) self.connect('enter-notify-event', _handle_notify_event, True) # todo: fix # self.set_flags(Gtk.CAN_FOCUS) # self.set_can_focus(True) # self.connect('focus-out-event', self._handle_focus_lost_event) + ########################################################################## # Handlers ########################################################################## @@ -155,6 +164,41 @@ class DrawingArea(Gtk.DrawingArea): coordinate=self._translate_event_coords(event), ) + def _handle_key_press(self, widget, event): + """ + Handle specific keypresses when the drawing area has focus that + triggers actions by the user. + """ + key = event.keyval + mod = event.state + + # Setup a map of the accelerator keys to the action to trigger + accels = { + Gtk.accelerator_parse('d'): Actions.BLOCK_DISABLE, + Gtk.accelerator_parse('e'): Actions.BLOCK_ENABLE, + Gtk.accelerator_parse('b'): Actions.BLOCK_BYPASS, + Gtk.accelerator_parse('c'): Actions.BLOCK_CREATE_HIER, + Gtk.accelerator_parse('Up'): Actions.BLOCK_DEC_TYPE, + Gtk.accelerator_parse('Down'): Actions.BLOCK_INC_TYPE, + Gtk.accelerator_parse('Left'): Actions.BLOCK_ROTATE_CCW, + Gtk.accelerator_parse('Right'): Actions.BLOCK_ROTATE_CW, + Gtk.accelerator_parse('minus'): Actions.PORT_CONTROLLER_DEC, + Gtk.accelerator_parse('plus'): Actions.PORT_CONTROLLER_INC, + Gtk.accelerator_parse('Add'): Actions.PORT_CONTROLLER_INC, + Gtk.accelerator_parse('Subtract'): Actions.PORT_CONTROLLER_DEC, + Gtk.accelerator_parse('Return'): Actions.BLOCK_PARAM_MODIFY, + Gtk.accelerator_parse('<Shift>t'): Actions.BLOCK_VALIGN_TOP, + Gtk.accelerator_parse('<Shift>m'): Actions.BLOCK_VALIGN_MIDDLE, + Gtk.accelerator_parse('<Shift>b'): Actions.BLOCK_VALIGN_BOTTOM, + Gtk.accelerator_parse('<Shift>l'): Actions.BLOCK_HALIGN_LEFT, + Gtk.accelerator_parse('<Shift>c'): Actions.BLOCK_HALIGN_CENTER, + Gtk.accelerator_parse('<Shift>r'): Actions.BLOCK_HALIGN_RIGHT, + } + # Not sold on this. + if (key, mod) in accels: + accels[(key, mod)]() + return True + def _update_size(self): w, h = self._flow_graph.get_extents()[2:] self.set_size_request(w * self.zoom_factor + 100, h * self.zoom_factor + 100) |