diff options
Diffstat (limited to 'liblogdiag/ld-canvas.c')
| -rw-r--r-- | liblogdiag/ld-canvas.c | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/liblogdiag/ld-canvas.c b/liblogdiag/ld-canvas.c index 779d92b..1d05b4b 100644 --- a/liblogdiag/ld-canvas.c +++ b/liblogdiag/ld-canvas.c @@ -172,6 +172,7 @@ static void on_adjustment_value_changed static void on_size_allocate (GtkWidget *widget, GtkAllocation *allocation, gpointer user_data); static void update_adjustments (LdCanvas *self); +static void ld_canvas_real_move (LdCanvas *self, gdouble dx, gdouble dy); static void diagram_connect_signals (LdCanvas *self); static void diagram_disconnect_signals (LdCanvas *self); @@ -247,10 +248,19 @@ ld_canvas_class_init (LdCanvasClass *klass) klass->set_scroll_adjustments = ld_canvas_real_set_scroll_adjustments; klass->cancel_operation = ld_canvas_real_cancel_operation; + klass->move = ld_canvas_real_move; binding_set = gtk_binding_set_by_class (klass); gtk_binding_entry_add_signal (binding_set, GDK_Escape, 0, "cancel-operation", 0); + gtk_binding_entry_add_signal (binding_set, GDK_Left, 0, + "move", 2, G_TYPE_DOUBLE, (gdouble) -1, G_TYPE_DOUBLE, (gdouble) 0); + gtk_binding_entry_add_signal (binding_set, GDK_Right, 0, + "move", 2, G_TYPE_DOUBLE, (gdouble) 1, G_TYPE_DOUBLE, (gdouble) 0); + gtk_binding_entry_add_signal (binding_set, GDK_Up, 0, + "move", 2, G_TYPE_DOUBLE, (gdouble) 0, G_TYPE_DOUBLE, (gdouble) -1); + gtk_binding_entry_add_signal (binding_set, GDK_Down, 0, + "move", 2, G_TYPE_DOUBLE, (gdouble) 0, G_TYPE_DOUBLE, (gdouble) 1); /** * LdCanvas:diagram: @@ -311,6 +321,21 @@ ld_canvas_class_init (LdCanvasClass *klass) g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0); +/** + * LdCanvas::move: + * @self: an #LdCanvas object. + * @dx: The difference by which to move on the horizontal axis. + * @dy: The difference by which to move on the vertical axis. + * + * Move the selection, if any, or the document. + */ + klass->move_signal = g_signal_new + ("move", G_TYPE_FROM_CLASS (klass), + G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, + G_STRUCT_OFFSET (LdCanvasClass, move), NULL, NULL, + ld_marshal_VOID__DOUBLE_DOUBLE, + G_TYPE_NONE, 2, G_TYPE_DOUBLE, G_TYPE_DOUBLE); + g_type_class_add_private (klass, sizeof (LdCanvasPrivate)); } @@ -552,6 +577,42 @@ update_adjustments (LdCanvas *self) } } +static void +ld_canvas_real_move (LdCanvas *self, gdouble dx, gdouble dy) +{ + LdDiagram *diagram; + GList *selection, *iter; + + /* TODO: Check/move boundaries, also implement normal + * getters and setters for priv->x and priv->y. + */ + diagram = self->priv->diagram; + selection = ld_diagram_get_selection (diagram); + if (selection) + { + ld_diagram_begin_user_action (diagram); + for (iter = selection; iter; iter = g_list_next (iter)) + { + gdouble x, y; + + g_object_get (iter->data, "x", &x, "y", &y, NULL); + x += dx; + y += dy; + g_object_set (iter->data, "x", x, "y", y, NULL); + } + ld_diagram_end_user_action (diagram); + } + else + { + self->priv->x += dx; + self->priv->y += dy; + + simulate_motion (self); + update_adjustments (self); + } + gtk_widget_queue_draw (GTK_WIDGET (self)); +} + /* ===== Generic interface etc. ============================================ */ |