src/gnumeric-simple-canvas.c

   1 #include <gnumeric-config.h>
   2 #include <gnumeric.h>
   3 #include <gnumeric-simple-canvas.h>
   4
   5 #include <sheet-control-gui-priv.h>
   6 #include <gutils.h>
   7 #include <goffice/goffice.h>
   8 #include <gsf/gsf-impl-utils.h>
   9
  10 static gboolean debug_canvas_grab;
  11
  12 static GtkWidgetClass const *parent;
  13 static gint
  14 gnm_simple_canvas_key_press (GtkWidget *widget, GdkEventKey *event)
  15 {
  16         GnmSimpleCanvas *gcanvas = GNM_SIMPLE_CANVAS (widget);
  17
  18         if (gcanvas->scg->grab_stack > 0)
  19                 return TRUE;
  20         return parent->key_press_event (widget, event);
  21 }
  22
  23 static gint
  24 gnm_simple_canvas_key_release (GtkWidget *widget, GdkEventKey *event)
  25 {
  26         GnmSimpleCanvas *gcanvas = GNM_SIMPLE_CANVAS (widget);
  27
  28         if (gcanvas->scg->grab_stack > 0)
  29                 return TRUE;
  30         return parent->key_release_event (widget, event);
  31 }
  32
  33 static void
  34 gnm_simple_canvas_class_init (GtkWidgetClass *klass)
  35 {
  36         parent = g_type_class_peek_parent (klass);
  37         klass->key_press_event   = gnm_simple_canvas_key_press;
  38         klass->key_release_event = gnm_simple_canvas_key_release;
  39         debug_canvas_grab = gnm_debug_flag ("canvas-grab");
  40 }
  41
  42 GSF_CLASS (GnmSimpleCanvas, gnm_simple_canvas,
  43            gnm_simple_canvas_class_init, NULL,
  44            GOC_TYPE_CANVAS)
  45
  46 GocCanvas *
  47 gnm_simple_canvas_new (SheetControlGUI *scg)
  48 {
  49         GnmSimpleCanvas *gcanvas = g_object_new (GNM_SIMPLE_CANVAS_TYPE, NULL);
  50         gcanvas->scg  = scg;
  51
  52         return GOC_CANVAS (gcanvas);
  53 }
  54
  55 void
  56 gnm_simple_canvas_ungrab (GocItem *item)
  57 {
  58         GnmSimpleCanvas *gcanvas = GNM_SIMPLE_CANVAS(item->canvas);
  59
  60         g_return_if_fail (gcanvas != NULL);
  61
  62         gcanvas->scg->grab_stack--;
  63         if (debug_canvas_grab)
  64                 g_printerr ("Grab dec to %d\n", gcanvas->scg->grab_stack);
  65         goc_item_ungrab (item);
  66 }
  67
  68 void
  69 gnm_simple_canvas_grab (GocItem *item)
  70 {
  71         GnmSimpleCanvas *gcanvas = GNM_SIMPLE_CANVAS(item->canvas);
  72
  73         g_return_if_fail (gcanvas != NULL);
  74
  75         gcanvas->scg->grab_stack++;
  76         if (debug_canvas_grab)
  77                 g_printerr ("Grab inc to %d\n", gcanvas->scg->grab_stack);
  78         goc_item_grab (item);
  79 }