src/gnumeric-simple-canvas.c

   1 /* vim: set sw=8: */
   2 #include <gnumeric-config.h>
   3 #include "gnumeric.h"
   4 #include "gnumeric-simple-canvas.h"
   5
   6 #include "sheet-control-gui-priv.h"
   7 #include "gutils.h"
   8 #include <goffice/goffice.h>
   9 #include <gsf/gsf-impl-utils.h>
  10
  11 static gboolean debug_canvas_grab;
  12
  13 static GtkWidgetClass const *parent;
  14 static gint
  15 gnm_simple_canvas_key_press (GtkWidget *widget, GdkEventKey *event)
  16 {
  17         GnmSimpleCanvas *gcanvas = GNM_SIMPLE_CANVAS (widget);
  18
  19         if (gcanvas->scg->grab_stack > 0)
  20                 return TRUE;
  21         return parent->key_press_event (widget, event);
  22 }
  23
  24 static gint
  25 gnm_simple_canvas_key_release (GtkWidget *widget, GdkEventKey *event)
  26 {
  27         GnmSimpleCanvas *gcanvas = GNM_SIMPLE_CANVAS (widget);
  28
  29         if (gcanvas->scg->grab_stack > 0)
  30                 return TRUE;
  31         return parent->key_release_event (widget, event);
  32 }
  33
  34 static void
  35 gnm_simple_canvas_class_init (GtkWidgetClass *klass)
  36 {
  37         parent = g_type_class_peek_parent (klass);
  38         klass->key_press_event   = gnm_simple_canvas_key_press;
  39         klass->key_release_event = gnm_simple_canvas_key_release;
  40         debug_canvas_grab = gnm_debug_flag ("canvas-grab");
  41 }
  42
  43 GSF_CLASS (GnmSimpleCanvas, gnm_simple_canvas,
  44            gnm_simple_canvas_class_init, NULL,
  45            GOC_TYPE_CANVAS)
  46
  47 GocCanvas *
  48 gnm_simple_canvas_new (SheetControlGUI *scg)
  49 {
  50         GnmSimpleCanvas *gcanvas = g_object_new (GNM_SIMPLE_CANVAS_TYPE, NULL);
  51         gcanvas->scg  = scg;
  52
  53         return GOC_CANVAS (gcanvas);
  54 }
  55
  56 void
  57 gnm_simple_canvas_ungrab (GocItem *item)
  58 {
  59         GnmSimpleCanvas *gcanvas = GNM_SIMPLE_CANVAS(item->canvas);
  60
  61         g_return_if_fail (gcanvas != NULL);
  62
  63         gcanvas->scg->grab_stack--;
  64         if (debug_canvas_grab)
  65                 g_printerr ("Grab dec to %d\n", gcanvas->scg->grab_stack);
  66         goc_item_ungrab (item);
  67 }
  68
  69 void
  70 gnm_simple_canvas_grab (GocItem *item)
  71 {
  72         GnmSimpleCanvas *gcanvas = GNM_SIMPLE_CANVAS(item->canvas);
  73
  74         g_return_if_fail (gcanvas != NULL);
  75
  76         gcanvas->scg->grab_stack++;
  77         if (debug_canvas_grab)
  78                 g_printerr ("Grab inc to %d\n", gcanvas->scg->grab_stack);
  79         goc_item_grab (item);
  80 }