gimp r25804 - in trunk: . app/widgets

[neo svn gnome org]

Author: neo
Date: Mon May 26 15:18:31 2008
New Revision: 25804
URL: http://svn.gnome.org/viewvc/gimp?rev=25804&view=rev

Log:
2008-05-26  Sven Neumann  <sven gimp org>

	* app/widgets/gimppropwidgets.[ch]: support for GimpScaleButton.


Modified:
   trunk/ChangeLog
   trunk/app/widgets/gimppropwidgets.c
   trunk/app/widgets/gimppropwidgets.h

Modified: trunk/app/widgets/gimppropwidgets.c
==============================================================================
--- trunk/app/widgets/gimppropwidgets.c	(original)
+++ trunk/app/widgets/gimppropwidgets.c	Mon May 26 15:18:31 2008
@@ -40,6 +40,7 @@
 
 #include "gimpcolorpanel.h"
 #include "gimpdnd.h"
+#include "gimpscalebutton.h"
 #include "gimpview.h"
 #include "gimppropwidgets.h"
 #include "gimpwidgets-constructors.h"
@@ -335,6 +336,120 @@
 }
 
 
+/******************/
+/*  scale button  */
+/******************/
+
+static void   gimp_prop_scale_button_callback (GtkWidget  *widget,
+                                               GObject    *config);
+static void   gimp_prop_scale_button_notify   (GObject    *config,
+                                               GParamSpec *param_spec,
+                                               GtkWidget  *button);
+
+/**
+ * gimp_prop_scale_button_new:
+ * @config:        #GimpConfig object to which property is attached.
+ * @property_name: Name of gdouble property
+ *
+ * Creates a #GimpScaleButton to set and display the value of a
+ * gdouble property in a very space-efficient way.
+ *
+ * Return value:  A new #GimpScaleButton widget.
+ *
+ * Since GIMP 2.6
+ */
+GtkWidget *
+gimp_prop_scale_button_new (GObject     *config,
+                            const gchar *property_name)
+{
+  GParamSpec *param_spec;
+  GtkWidget  *button;
+  GtkObject  *adj;
+  gdouble     value;
+  gdouble     lower;
+  gdouble     upper;
+
+  param_spec = check_param_spec_w (config, property_name,
+                                   G_TYPE_PARAM_DOUBLE, G_STRFUNC);
+
+  if (! param_spec)
+    return NULL;
+
+  g_object_get (config,
+                param_spec->name, &value,
+                NULL);
+
+  lower = G_PARAM_SPEC_DOUBLE (param_spec)->minimum;
+  upper = G_PARAM_SPEC_DOUBLE (param_spec)->maximum;
+
+  button = gimp_scale_button_new ();
+
+  adj = gtk_adjustment_new (value, lower, upper, (upper - lower) / 10.0, 0, 0);
+  gtk_scale_button_set_adjustment (GTK_SCALE_BUTTON (button),
+                                   GTK_ADJUSTMENT (adj));
+
+  set_param_spec (G_OBJECT (button), button, param_spec);
+
+  g_signal_connect (button, "value-changed",
+                    G_CALLBACK (gimp_prop_scale_button_callback),
+                    config);
+
+  connect_notify (config, property_name,
+                  G_CALLBACK (gimp_prop_scale_button_notify),
+                  button);
+
+  return button;
+}
+
+static void
+gimp_prop_scale_button_callback (GtkWidget *button,
+                                 GObject   *config)
+{
+  GParamSpec *param_spec;
+  gdouble     value;
+
+  param_spec = get_param_spec (G_OBJECT (button));
+  if (! param_spec)
+    return;
+
+  value = gtk_scale_button_get_value (GTK_SCALE_BUTTON (button));
+
+  g_signal_handlers_block_by_func (config,
+                                   gimp_prop_scale_button_notify,
+                                   button);
+
+  g_object_set (config,
+                param_spec->name, &value,
+                NULL);
+
+  g_signal_handlers_unblock_by_func (config,
+                                     gimp_prop_scale_button_notify,
+                                     button);
+}
+
+static void
+gimp_prop_scale_button_notify (GObject    *config,
+                               GParamSpec *param_spec,
+                               GtkWidget  *button)
+{
+  gdouble value;
+
+  g_object_get (config,
+                param_spec->name, &value,
+                NULL);
+
+  g_signal_handlers_block_by_func (button,
+                                   gimp_prop_scale_button_callback,
+                                   config);
+
+  gtk_scale_button_set_value (GTK_SCALE_BUTTON (button), value);
+
+  g_signal_handlers_unblock_by_func (button,
+                                     gimp_prop_scale_button_callback,
+                                     config);
+}
+
+
 /*************/
 /*  view  */
 /*************/

Modified: trunk/app/widgets/gimppropwidgets.h
==============================================================================
--- trunk/app/widgets/gimppropwidgets.h	(original)
+++ trunk/app/widgets/gimppropwidgets.h	Mon May 26 15:18:31 2008
@@ -50,6 +50,11 @@
                                            GimpColorAreaType  type);
 
 
+/*  GParamDouble  */
+GtkWidget * gimp_prop_scale_button_new    (GObject     *config,
+                                           const gchar *property_name);
+
+
 /*  GParamObject (GimpViewable)  */
 
 GtkWidget * gimp_prop_view_new            (GObject     *config,