IDO initial commit, scale menuitem

1 files changed, 449 insertions, 0 deletions

diff --git a/src/idoscalemenuitem.c b/src/idoscalemenuitem.c
new file mode 100644
index 0000000..dd13b53
--- /dev/null
+++ b/src/idoscalemenuitem.c
@@ -0,0 +1,449 @@
+/*
+ * Copyright (C) 2010 Canonical, Ltd.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ * Authors:
+ *    Cody Russell <crussell@canonical.com>
+ */
+
+#include <gtk/gtk.h>
+#include "idoscalemenuitem.h"
+
+static void     ido_scale_menu_item_size_request         (GtkWidget             *widget,
+                                                          GtkRequisition        *requisition);
+static void     ido_scale_menu_item_size_allocate        (GtkWidget             *widget,
+                                                          GtkAllocation         *allocation);
+static GObject* ido_scale_menu_item_constructor          (GType                  type,
+                                                          guint                  n_construct_properties,
+                                                          GObjectConstructParam *construct_params);
+static void     ido_scale_menu_item_set_property         (GObject               *object,
+                                                          guint                  prop_id,
+                                                          const GValue          *value,
+                                                          GParamSpec            *pspec);
+static void     ido_scale_menu_item_get_property         (GObject               *object,
+                                                          guint                  prop_id,
+                                                          GValue                *value,
+                                                          GParamSpec            *pspec);
+static void     ido_scale_menu_item_forall               (GtkContainer          *container,
+                                                          gboolean               include_internals,
+                                                          GtkCallback            callback,
+                                                          gpointer               data);
+static void     ido_scale_menu_item_construct_child      (IdoScaleMenuItem      *item);
+static gboolean ido_scale_menu_item_button_press_event   (GtkWidget             *menuitem,
+                                                          GdkEventButton        *event);
+static gboolean ido_scale_menu_item_button_release_event (GtkWidget             *menuitem,
+                                                          GdkEventButton        *event);
+static gboolean ido_scale_menu_item_motion_notify_event  (GtkWidget             *menuitem,
+                                                          GdkEventMotion        *event);
+
+struct _IdoScaleMenuItemPrivate {
+  GtkWidget     *scale;
+  GtkAdjustment *adjustment;
+};
+
+enum {
+  PROP_0,
+  PROP_MIN,
+  PROP_MAX,
+  PROP_STEP,
+  PROP_VALUE,
+  PROP_ADJUSTMENT
+};
+
+G_DEFINE_TYPE (IdoScaleMenuItem, ido_scale_menu_item, GTK_TYPE_MENU_ITEM)
+
+#define GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), IDO_TYPE_SCALE_MENU_ITEM, IdoScaleMenuItemPrivate))
+
+static void
+ido_scale_menu_item_state_changed (GtkWidget *widget,
+                                   GtkStateType previous_state)
+{
+  gtk_widget_set_state (widget, GTK_STATE_NORMAL);
+}
+
+static gboolean
+ido_scale_menu_item_scroll_event (GtkWidget      *menuitem,
+                                  GdkEventScroll *event)
+{
+  GtkWidget *scale = GET_PRIVATE (IDO_SCALE_MENU_ITEM (menuitem))->scale;
+
+  gtk_widget_event (scale, (GdkEvent *) event);
+
+  return TRUE;
+}
+
+static void
+ido_scale_menu_item_class_init (IdoScaleMenuItemClass *item_class)
+{
+  GObjectClass      *gobject_class = G_OBJECT_CLASS (item_class);
+  GtkObjectClass    *object_class = GTK_OBJECT_CLASS (item_class);
+  GtkWidgetClass    *widget_class = GTK_WIDGET_CLASS (item_class);
+  GtkContainerClass *container_class = GTK_CONTAINER_CLASS (item_class);
+
+  container_class->forall = ido_scale_menu_item_forall;
+
+  widget_class->size_request = ido_scale_menu_item_size_request;
+  widget_class->size_allocate = ido_scale_menu_item_size_allocate;
+
+  widget_class->button_press_event = ido_scale_menu_item_button_press_event;
+  widget_class->button_release_event = ido_scale_menu_item_button_release_event;
+  widget_class->motion_notify_event = ido_scale_menu_item_motion_notify_event;
+  widget_class->scroll_event = ido_scale_menu_item_scroll_event;
+  widget_class->state_changed = ido_scale_menu_item_state_changed;
+
+  gobject_class->constructor  = ido_scale_menu_item_constructor;
+  gobject_class->set_property = ido_scale_menu_item_set_property;
+  gobject_class->get_property = ido_scale_menu_item_get_property;
+
+  g_object_class_install_property (gobject_class,
+                                   PROP_ADJUSTMENT,
+                                   g_param_spec_object ("adjustment",
+                                                        "Adjustment",
+                                                        "The adjustment containing the scale value",
+                                                        GTK_TYPE_ADJUSTMENT,
+                                                        G_PARAM_READWRITE));
+
+  g_type_class_add_private (object_class, sizeof (IdoScaleMenuItemPrivate));
+}
+
+static void
+ido_scale_menu_item_init (IdoScaleMenuItem *self)
+{
+  IdoScaleMenuItemPrivate *priv = GET_PRIVATE (self);
+
+  priv->scale = NULL;
+  priv->adjustment = NULL;
+}
+
+static void
+ido_scale_menu_item_set_property (GObject         *object,
+                                  guint            prop_id,
+                                  const GValue    *value,
+                                  GParamSpec      *pspec)
+{
+  IdoScaleMenuItem *menu_item = IDO_SCALE_MENU_ITEM (object);
+  IdoScaleMenuItemPrivate *priv = GET_PRIVATE (menu_item);
+
+  switch (prop_id)
+    {
+    case PROP_ADJUSTMENT:
+      if (!priv->scale)
+        {
+          priv->adjustment = g_value_get_object (value);
+          priv->scale = gtk_hscale_new (priv->adjustment);
+          gtk_scale_set_draw_value (GTK_SCALE (priv->scale), FALSE);
+        }
+
+      ido_scale_menu_item_construct_child (menu_item);
+
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+    }
+}
+
+static void
+ido_scale_menu_item_get_property (GObject         *object,
+                                  guint            prop_id,
+                                  GValue          *value,
+                                  GParamSpec      *pspec)
+{
+  IdoScaleMenuItem *menu_item = IDO_SCALE_MENU_ITEM (object);
+  IdoScaleMenuItemPrivate *priv = GET_PRIVATE (menu_item);
+  GtkAdjustment *adjustment = gtk_range_get_adjustment (GTK_RANGE (priv->scale));
+
+  switch (prop_id)
+    {
+    case PROP_ADJUSTMENT:
+      g_value_set_object (value, adjustment);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+    }
+}
+
+static GObject*
+ido_scale_menu_item_constructor (GType                  type,
+                                 guint                  n_construct_properties,
+                                 GObjectConstructParam *construct_params)
+{
+  GObject *object;
+  IdoScaleMenuItemPrivate *priv;
+
+  object = G_OBJECT_CLASS (ido_scale_menu_item_parent_class)->constructor (type,
+                                                                           n_construct_properties,
+                                                                           construct_params);
+
+  priv = GET_PRIVATE (object);
+
+  if (priv->scale != NULL)
+    {
+      ido_scale_menu_item_construct_child (IDO_SCALE_MENU_ITEM (object));
+    }
+
+  return object;
+}
+
+static void
+ido_scale_menu_item_forall (GtkContainer *container,
+                            gboolean      include_internals,
+                            GtkCallback   callback,
+                            gpointer      data)
+{
+  IdoScaleMenuItem *item = IDO_SCALE_MENU_ITEM (container);
+  IdoScaleMenuItemPrivate *priv = GET_PRIVATE (item);
+
+  GTK_CONTAINER_CLASS (ido_scale_menu_item_parent_class)->forall (container,
+                                                                  include_internals,
+                                                                  callback,
+                                                                  data);
+
+  if (include_internals && priv->scale)
+    (* callback) (priv->scale, data);
+}
+
+static void
+ido_scale_menu_item_size_request (GtkWidget      *widget,
+                                  GtkRequisition *requisition)
+{
+  IdoScaleMenuItem *item;
+  IdoScaleMenuItemPrivate *priv;
+  GtkWidget *parent;
+  GtkPackDirection dir;
+  gint child_width = 0;
+  gint child_height = 0;
+
+  parent = gtk_widget_get_parent (widget);
+  item = IDO_SCALE_MENU_ITEM (widget);
+  priv = GET_PRIVATE (item);
+
+  if (GTK_IS_MENU_BAR (parent))
+    dir = gtk_menu_bar_get_child_pack_direction (GTK_MENU_BAR (parent));
+  else
+    dir = GTK_PACK_DIRECTION_LTR;
+
+  if (priv->scale && GTK_WIDGET_VISIBLE (priv->scale))
+    {
+      GtkRequisition child_requisition;
+
+      gtk_widget_size_request (priv->scale,
+                               &child_requisition);
+
+      child_width = child_requisition.width;
+      child_height = child_requisition.height;
+    }
+
+  GTK_WIDGET_CLASS (ido_scale_menu_item_parent_class)->size_request (widget, requisition);
+
+  if (dir == GTK_PACK_DIRECTION_LTR || dir == GTK_PACK_DIRECTION_RTL)
+    requisition->height = MAX (requisition->height, child_height);
+  else
+    requisition->width = MAX (requisition->width, child_width);
+}
+
+static void
+ido_scale_menu_item_size_allocate (GtkWidget     *widget,
+                                   GtkAllocation *allocation)
+{
+  IdoScaleMenuItem *item;
+  IdoScaleMenuItemPrivate *priv;
+  GtkWidget *parent;
+  GtkPackDirection dir;
+
+  item = IDO_SCALE_MENU_ITEM (widget);
+  priv = GET_PRIVATE (item);
+  parent = gtk_widget_get_parent (widget);
+
+  if (GTK_IS_MENU_BAR (parent))
+    dir = gtk_menu_bar_get_child_pack_direction (GTK_MENU_BAR (parent));
+  else
+    dir = GTK_PACK_DIRECTION_LTR;
+
+  GTK_WIDGET_CLASS (ido_scale_menu_item_parent_class)->size_allocate (widget, allocation);
+
+  if (priv->scale && GTK_WIDGET_VISIBLE (priv->scale))
+    {
+      GtkRequisition child_requisition;
+      GtkAllocation  child_allocation;
+      gint x, y, offset;
+
+      gtk_widget_get_child_requisition (priv->scale,
+                                        &child_requisition);
+
+      if (dir == GTK_PACK_DIRECTION_LTR || dir == GTK_PACK_DIRECTION_RTL)
+        {
+          offset = GTK_CONTAINER (item)->border_width + widget->style->xthickness;
+
+          if ((gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR) ==
+              (dir == GTK_PACK_DIRECTION_LTR))
+            {
+              x = offset + (GTK_MENU_ITEM (item)->toggle_size - child_requisition.width) / 2;
+            }
+          else
+            {
+              // TODO rtl
+            }
+        }
+      else
+        {
+          offset = GTK_CONTAINER (item)->border_width + widget->style->ythickness;
+
+          // TODO vertical
+        }
+
+      y = widget->allocation.height / 2 - child_requisition.height / 2;
+
+      child_allocation.width  = allocation->width;
+      child_allocation.height = child_requisition.height;
+      child_allocation.x    = widget->allocation.x + MAX (x, 0);
+      child_allocation.y    = widget->allocation.y + MAX (y, 0);
+
+      gtk_widget_size_allocate (priv->scale, &child_allocation);
+    }
+}
+
+static gboolean
+ido_scale_menu_item_button_press_event (GtkWidget *menuitem,
+                                        GdkEventButton *event)
+{
+  GtkWidget *scale = GET_PRIVATE (IDO_SCALE_MENU_ITEM (menuitem))->scale;
+
+  event->x = 0;
+  event->y = 0;
+
+  //gtk_grab_add (scale);
+  //gtk_grab_remove (menuitem->parent);
+
+  gtk_widget_event (scale, (GdkEvent *)event);
+
+  //g_signal_stop_emission_by_name (menuitem->parent, "hide");
+
+  return FALSE;
+}
+
+static gboolean
+ido_scale_menu_item_button_release_event (GtkWidget *menuitem,
+                                          GdkEventButton *event)
+{
+  GtkWidget *scale = GET_PRIVATE (IDO_SCALE_MENU_ITEM (menuitem))->scale;
+
+  //gtk_grab_remove (scale);
+
+  gtk_widget_event (scale, (GdkEvent *) event);
+
+  return TRUE;
+}
+
+static gboolean
+ido_scale_menu_item_motion_notify_event (GtkWidget *menuitem,
+                                         GdkEventMotion *event)
+{
+  GtkWidget *scale = GET_PRIVATE (IDO_SCALE_MENU_ITEM (menuitem))->scale;
+  gtk_widget_event (scale, (GdkEvent *) event);
+
+  return TRUE;
+}
+
+static void
+ido_scale_menu_item_construct_child (IdoScaleMenuItem *item)
+{
+  IdoScaleMenuItemPrivate *priv = GET_PRIVATE (item);
+  GtkWidget *scale = NULL;
+
+  if (priv->scale)
+    {
+      scale = g_object_ref (priv->scale);
+      if (scale->parent)
+        {
+          gtk_container_remove (GTK_CONTAINER (scale->parent), scale);
+        }
+    }
+
+  priv->scale = NULL;
+
+  priv->scale = gtk_hscale_new (priv->adjustment);
+  gtk_widget_set_can_focus (priv->scale, TRUE);
+  gtk_scale_set_draw_value (GTK_SCALE (priv->scale), FALSE);
+
+  if (GTK_BIN (item)->child)
+    gtk_container_remove (GTK_CONTAINER (item),
+                          GTK_BIN (item)->child);
+
+  if (scale)
+    {
+      priv->scale = scale;
+      g_object_set (priv->scale,
+                    "visible", TRUE,
+                    "no-show-all", TRUE,
+                    NULL);
+
+      gtk_container_add (GTK_CONTAINER (item), scale);
+      gtk_widget_show_all (scale);
+
+      g_object_unref (scale);
+
+      return;
+    }
+}
+
+
+/**
+ * ido_scale_menu_item_new:
+ * @label: the text of the new menu item.
+ * @adjustment: A #GtkAdjustment describing the slider value.
+ * @returns: a new #IdoScaleMenuItem.
+ *
+ * Creates a new #IdoScaleMenuItem with an empty label.
+ **/
+GtkWidget*
+ido_scale_menu_item_new (const gchar   *label,
+                         GtkAdjustment *adjustment)
+{
+  return g_object_new (IDO_TYPE_SCALE_MENU_ITEM,
+                       "adjustment", adjustment,
+                       NULL);
+}
+
+/**
+ * ido_scale_menu_item_new_with_label:
+ * @label: the text of the menu item.
+ * @min: The minimum value of the slider.
+ * @max: The maximum value of the slider.
+ * @step: The step increment of the slider.
+ * @returns: a new #IdoScaleMenuItem.
+ *
+ * Creates a new #IdoScaleMenuItem containing a label.
+ **/
+GtkWidget*
+ido_scale_menu_item_new_with_range (const gchar *label,
+                                    gdouble      min,
+                                    gdouble      max,
+                                    gdouble      step)
+{
+  GtkObject *adjustment = gtk_adjustment_new (min, min, max, step, 10 * step, 0);
+
+  return g_object_new (IDO_TYPE_SCALE_MENU_ITEM,
+                       "label", label,
+                       "adjustment", adjustment,
+		       NULL);
+}
+
+#define __IDO_SCALE_MENU_ITEM_C__