[gimp] Bug 787919 - Tool options are lost when switching device



commit 2f629072f1064eecc720a8f93dafde71a24ef7c8
Author: Michael Natterer <mitch gimp org>
Date:   Tue May 15 22:31:19 2018 +0200

    Bug 787919 - Tool options are lost when switching device
    
    GimpDeviceInfo is the only way to store per-device settings like
    color, brush etc. It used to be derived from GimpContext and therefore
    limited to the context's properties, causing everything else (all
    tool-individual options) to be lost on device change.
    
    Derive it from GimpToolPreset instead, so it's capable of storing
    arbitrary tool options.
    
    Adapt things to the new class hierarchy and add a bunch of signal
    handlers that make sure the active device's GimpDeviceInfo is updated
    properly when the tool changes. Also change device switching
    accordingly.
    
    Change GimpDeviceStatus to only show the stuff that is relevant to
    each device's tool.
    
    And various small changes to make things work properly...

 app/core/gimptoolpreset.c                  |    3 +-
 app/display/gimpdisplayshell-tool-events.c |    1 +
 app/widgets/gimpdeviceinfo.c               |  171 ++++++++++++++-----------
 app/widgets/gimpdeviceinfo.h               |   37 ++----
 app/widgets/gimpdeviceinfoeditor.c         |    2 +-
 app/widgets/gimpdevicemanager.c            |  188 +++++++++++++++++++++------
 app/widgets/gimpdevices.c                  |   12 +--
 app/widgets/gimpdevicestatus.c             |  180 +++++++++++++++++++-------
 app/widgets/gimptoolpreseteditor.c         |   18 ++-
 9 files changed, 405 insertions(+), 207 deletions(-)
---
diff --git a/app/core/gimptoolpreset.c b/app/core/gimptoolpreset.c
index d26cafd..d04b676 100644
--- a/app/core/gimptoolpreset.c
+++ b/app/core/gimptoolpreset.c
@@ -516,7 +516,8 @@ gimp_tool_preset_set_options (GimpToolPreset  *preset,
                                              serialize_props |
                                              GIMP_CONTEXT_PROP_MASK_TOOL);
 
-      if (! (serialize_props & GIMP_CONTEXT_PROP_MASK_FOREGROUND))
+      if (! (serialize_props & GIMP_CONTEXT_PROP_MASK_FOREGROUND) &&
+          ! (serialize_props & GIMP_CONTEXT_PROP_MASK_BACKGROUND))
         g_object_set (preset, "use-fg-bg", FALSE, NULL);
 
       if (! (serialize_props & GIMP_CONTEXT_PROP_MASK_BRUSH))
diff --git a/app/display/gimpdisplayshell-tool-events.c b/app/display/gimpdisplayshell-tool-events.c
index 4325bf3..73e612d 100644
--- a/app/display/gimpdisplayshell-tool-events.c
+++ b/app/display/gimpdisplayshell-tool-events.c
@@ -30,6 +30,7 @@
 
 #include "core/gimp.h"
 #include "core/gimp-filter-history.h"
+#include "core/gimpcontext.h"
 #include "core/gimpimage.h"
 #include "core/gimpitem.h"
 
diff --git a/app/widgets/gimpdeviceinfo.c b/app/widgets/gimpdeviceinfo.c
index 7c54e24..7c76066 100644
--- a/app/widgets/gimpdeviceinfo.c
+++ b/app/widgets/gimpdeviceinfo.c
@@ -31,6 +31,7 @@
 #include "widgets-types.h"
 
 #include "core/gimp.h"
+#include "core/gimpcontext.h"
 #include "core/gimpcontainer.h"
 #include "core/gimpcurve.h"
 #include "core/gimpcurve-map.h"
@@ -49,12 +50,6 @@
 
 enum
 {
-  CHANGED,
-  LAST_SIGNAL
-};
-
-enum
-{
   PROP_0,
   PROP_DEVICE,
   PROP_DISPLAY,
@@ -81,12 +76,10 @@ static void   gimp_device_info_get_property (GObject        *object,
 static void   gimp_device_info_guess_icon   (GimpDeviceInfo *info);
 
 
-G_DEFINE_TYPE (GimpDeviceInfo, gimp_device_info, GIMP_TYPE_CONTEXT)
+G_DEFINE_TYPE (GimpDeviceInfo, gimp_device_info, GIMP_TYPE_TOOL_PRESET)
 
 #define parent_class gimp_device_info_parent_class
 
-static guint device_info_signals[LAST_SIGNAL] = { 0 };
-
 
 static void
 gimp_device_info_class_init (GimpDeviceInfoClass *klass)
@@ -95,15 +88,6 @@ gimp_device_info_class_init (GimpDeviceInfoClass *klass)
   GimpViewableClass *viewable_class = GIMP_VIEWABLE_CLASS (klass);
   GParamSpec        *param_spec;
 
-  device_info_signals[CHANGED] =
-    g_signal_new ("changed",
-                  G_TYPE_FROM_CLASS (klass),
-                  G_SIGNAL_RUN_FIRST,
-                  G_STRUCT_OFFSET (GimpDeviceInfoClass, changed),
-                  NULL, NULL,
-                  gimp_marshal_VOID__VOID,
-                  G_TYPE_NONE, 0);
-
   object_class->constructed         = gimp_device_info_constructed;
   object_class->finalize            = gimp_device_info_finalize;
   object_class->set_property        = gimp_device_info_set_property;
@@ -169,14 +153,9 @@ gimp_device_info_class_init (GimpDeviceInfoClass *klass)
 static void
 gimp_device_info_init (GimpDeviceInfo *info)
 {
-  info->device   = NULL;
-  info->display  = NULL;
-  info->mode     = GDK_MODE_DISABLED;
-  info->n_axes   = 0;
-  info->axes     = NULL;
-  info->n_keys   = 0;
-  info->keys     = NULL;
+  gimp_data_make_internal (GIMP_DATA (info), NULL);
 
+  info->mode           = GDK_MODE_DISABLED;
   info->pressure_curve = GIMP_CURVE (gimp_curve_new ("pressure curve"));
 
   g_signal_connect (info, "notify::name",
@@ -188,15 +167,12 @@ static void
 gimp_device_info_constructed (GObject *object)
 {
   GimpDeviceInfo *info = GIMP_DEVICE_INFO (object);
-  Gimp           *gimp;
 
   G_OBJECT_CLASS (parent_class)->constructed (object);
 
   gimp_assert ((info->device == NULL         && info->display == NULL) ||
                (GDK_IS_DEVICE (info->device) && GDK_IS_DISPLAY (info->display)));
 
-  gimp = GIMP_CONTEXT (object)->gimp;
-
   if (info->device)
     {
       g_object_set_data (G_OBJECT (info->device), GIMP_DEVICE_INFO_DATA_KEY,
@@ -208,38 +184,6 @@ gimp_device_info_constructed (GObject *object)
       info->n_axes  = info->device->num_axes;
       info->n_keys  = info->device->num_keys;
     }
-
-  gimp_context_define_properties (GIMP_CONTEXT (object),
-                                  GIMP_DEVICE_INFO_CONTEXT_MASK,
-                                  FALSE);
-  gimp_context_copy_properties (gimp_get_user_context (gimp),
-                                GIMP_CONTEXT (object),
-                                GIMP_DEVICE_INFO_CONTEXT_MASK);
-
-  gimp_context_set_serialize_properties (GIMP_CONTEXT (object),
-                                         GIMP_DEVICE_INFO_CONTEXT_MASK);
-
-  /*  FIXME: this is ugly and needs to be done via "notify" once
-   *  the contexts' properties are dynamic.
-   */
-  g_signal_connect (object, "foreground-changed",
-                    G_CALLBACK (gimp_device_info_changed),
-                    NULL);
-  g_signal_connect (object, "background-changed",
-                    G_CALLBACK (gimp_device_info_changed),
-                    NULL);
-  g_signal_connect (object, "tool-changed",
-                    G_CALLBACK (gimp_device_info_changed),
-                    NULL);
-  g_signal_connect (object, "brush-changed",
-                    G_CALLBACK (gimp_device_info_changed),
-                    NULL);
-  g_signal_connect (object, "pattern-changed",
-                    G_CALLBACK (gimp_device_info_changed),
-                    NULL);
-  g_signal_connect (object, "gradient-changed",
-                    G_CALLBACK (gimp_device_info_changed),
-                    NULL);
 }
 
 static void
@@ -517,7 +461,6 @@ gimp_device_info_guess_icon (GimpDeviceInfo *info)
 }
 
 
-
 /*  public functions  */
 
 GimpDeviceInfo *
@@ -525,14 +468,23 @@ gimp_device_info_new (Gimp       *gimp,
                       GdkDevice  *device,
                       GdkDisplay *display)
 {
+  GimpContext  *context;
+  GimpToolInfo *tool_info;
+
   g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
   g_return_val_if_fail (GDK_IS_DEVICE (device), NULL);
   g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
 
+  context   = gimp_get_user_context (gimp);
+  tool_info = gimp_context_get_tool (context);
+
+  g_return_val_if_fail (tool_info != NULL, NULL);
+
   return g_object_new (GIMP_TYPE_DEVICE_INFO,
-                       "gimp",    gimp,
-                       "device",  device,
-                       "display", display,
+                       "gimp",         gimp,
+                       "device",       device,
+                       "display",      display,
+                       "tool-options", tool_info->tool_options,
                        NULL);
 }
 
@@ -626,7 +578,6 @@ gimp_device_info_set_device (GimpDeviceInfo *info,
   gimp_object_name_changed (GIMP_OBJECT (info));
 
   g_object_notify (G_OBJECT (info), "device");
-  gimp_device_info_changed (info);
 }
 
 void
@@ -637,7 +588,7 @@ gimp_device_info_set_default_tool (GimpDeviceInfo *info)
   if (info->device &&
       gdk_device_get_source (info->device) == GDK_SOURCE_ERASER)
     {
-      GimpContainer *tools = GIMP_CONTEXT (info)->gimp->tool_info_list;
+      GimpContainer *tools = GIMP_TOOL_PRESET (info)->gimp->tool_info_list;
       GimpToolInfo  *eraser;
 
       eraser =
@@ -645,7 +596,84 @@ gimp_device_info_set_default_tool (GimpDeviceInfo *info)
                                                           "gimp-eraser-tool"));
 
       if (eraser)
-        gimp_context_set_tool (GIMP_CONTEXT (info), eraser);
+        g_object_set (info,
+                      "tool-options", eraser->tool_options,
+                      NULL);
+    }
+}
+
+void
+gimp_device_info_save_tool (GimpDeviceInfo *info)
+{
+  GimpToolPreset      *preset = GIMP_TOOL_PRESET (info);
+  GimpContext         *user_context;
+  GimpToolInfo        *tool_info;
+  GimpContextPropMask  serialize_props;
+
+  g_return_if_fail (GIMP_IS_DEVICE_INFO (info));
+
+  user_context = gimp_get_user_context (GIMP_TOOL_PRESET (info)->gimp);
+
+  tool_info = gimp_context_get_tool (user_context);
+
+  g_object_set (info,
+                "tool-options", tool_info->tool_options,
+                NULL);
+
+  serialize_props =
+    gimp_context_get_serialize_properties (GIMP_CONTEXT (preset->tool_options));
+
+  g_object_set (preset,
+                "use-fg-bg",
+                (serialize_props & GIMP_CONTEXT_PROP_MASK_FOREGROUND) ||
+                (serialize_props & GIMP_CONTEXT_PROP_MASK_BACKGROUND),
+
+                "use-brush",
+                (serialize_props & GIMP_CONTEXT_PROP_MASK_BRUSH) != 0,
+
+                "use-dynamics",
+                (serialize_props & GIMP_CONTEXT_PROP_MASK_DYNAMICS) != 0,
+
+                "use-mypaint-brush",
+                (serialize_props & GIMP_CONTEXT_PROP_MASK_MYBRUSH) != 0,
+
+                "use-gradient",
+                (serialize_props & GIMP_CONTEXT_PROP_MASK_GRADIENT) != 0,
+
+                "use-pattern",
+                (serialize_props & GIMP_CONTEXT_PROP_MASK_PATTERN) != 0,
+
+                "use-palette",
+                (serialize_props & GIMP_CONTEXT_PROP_MASK_PALETTE) != 0,
+
+                "use-font",
+                (serialize_props & GIMP_CONTEXT_PROP_MASK_FONT) != 0,
+
+                NULL);
+}
+
+void
+gimp_device_info_restore_tool (GimpDeviceInfo *info)
+{
+  GimpToolPreset *preset;
+  GimpContext    *user_context;
+
+  g_return_if_fail (GIMP_IS_DEVICE_INFO (info));
+
+  preset = GIMP_TOOL_PRESET (info);
+
+  user_context = gimp_get_user_context (GIMP_TOOL_PRESET (info)->gimp);
+
+  if (preset->tool_options)
+    {
+      if (gimp_context_get_tool_preset (user_context) != preset)
+        {
+          gimp_context_set_tool_preset (user_context, preset);
+        }
+      else
+        {
+          gimp_context_tool_preset_changed (user_context);
+        }
     }
 }
 
@@ -674,7 +702,6 @@ gimp_device_info_set_mode (GimpDeviceInfo *info,
         info->mode = mode;
 
       g_object_notify (G_OBJECT (info), "mode");
-      gimp_device_info_changed (info);
     }
 }
 
@@ -845,14 +872,6 @@ gimp_device_info_map_axis (GimpDeviceInfo *info,
   return value;
 }
 
-void
-gimp_device_info_changed (GimpDeviceInfo *info)
-{
-  g_return_if_fail (GIMP_IS_DEVICE_INFO (info));
-
-  g_signal_emit (info, device_info_signals[CHANGED], 0);
-}
-
 GimpDeviceInfo *
 gimp_device_info_get_by_device (GdkDevice *device)
 {
diff --git a/app/widgets/gimpdeviceinfo.h b/app/widgets/gimpdeviceinfo.h
index 9b191cb..850bdd3 100644
--- a/app/widgets/gimpdeviceinfo.h
+++ b/app/widgets/gimpdeviceinfo.h
@@ -19,22 +19,12 @@
 #define __GIMP_DEVICE_INFO_H__
 
 
-#include "core/gimpcontext.h"
+#include "core/gimptoolpreset.h"
 
 
 G_BEGIN_DECLS
 
 
-#define GIMP_DEVICE_INFO_CONTEXT_MASK (GIMP_CONTEXT_PROP_MASK_TOOL       | \
-                                       GIMP_CONTEXT_PROP_MASK_PAINT_INFO | \
-                                       GIMP_CONTEXT_PROP_MASK_FOREGROUND | \
-                                       GIMP_CONTEXT_PROP_MASK_BACKGROUND | \
-                                       GIMP_CONTEXT_PROP_MASK_BRUSH      | \
-                                       GIMP_CONTEXT_PROP_MASK_DYNAMICS   | \
-                                       GIMP_CONTEXT_PROP_MASK_PATTERN    | \
-                                       GIMP_CONTEXT_PROP_MASK_GRADIENT)
-
-
 #define GIMP_TYPE_DEVICE_INFO            (gimp_device_info_get_type ())
 #define GIMP_DEVICE_INFO(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), GIMP_TYPE_DEVICE_INFO, 
GimpDeviceInfo))
 #define GIMP_DEVICE_INFO_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), GIMP_TYPE_DEVICE_INFO, 
GimpDeviceInfoClass))
@@ -47,29 +37,27 @@ typedef struct _GimpDeviceInfoClass GimpDeviceInfoClass;
 
 struct _GimpDeviceInfo
 {
-  GimpContext    parent_instance;
+  GimpToolPreset  parent_instance;
 
-  GdkDevice     *device;
-  GdkDisplay    *display;
+  GdkDevice      *device;
+  GdkDisplay     *display;
 
   /*  either "device" or the options below are set  */
 
-  GdkInputMode   mode;
-  gint           n_axes;
-  GdkAxisUse    *axes;
-  gint           n_keys;
-  GdkDeviceKey  *keys;
+  GdkInputMode    mode;
+  gint            n_axes;
+  GdkAxisUse     *axes;
+  gint            n_keys;
+  GdkDeviceKey   *keys;
 
   /*  curves  */
 
-  GimpCurve     *pressure_curve;
+  GimpCurve      *pressure_curve;
 };
 
 struct _GimpDeviceInfoClass
 {
-  GimpContextClass  parent_class;
-
-  void (* changed) (GimpDeviceInfo *device_info);
+  GimpToolPresetClass  parent_class;
 };
 
 
@@ -87,6 +75,9 @@ void             gimp_device_info_set_device        (GimpDeviceInfo  *info,
 
 void             gimp_device_info_set_default_tool  (GimpDeviceInfo  *info);
 
+void             gimp_device_info_save_tool         (GimpDeviceInfo  *info);
+void             gimp_device_info_restore_tool      (GimpDeviceInfo  *info);
+
 GdkInputMode     gimp_device_info_get_mode          (GimpDeviceInfo  *info);
 void             gimp_device_info_set_mode          (GimpDeviceInfo  *info,
                                                      GdkInputMode     mode);
diff --git a/app/widgets/gimpdeviceinfoeditor.c b/app/widgets/gimpdeviceinfoeditor.c
index b6b07e8..b3761d5 100644
--- a/app/widgets/gimpdeviceinfoeditor.c
+++ b/app/widgets/gimpdeviceinfoeditor.c
@@ -445,7 +445,7 @@ gimp_device_info_editor_constructed (GObject *object)
 
           view = gimp_curve_view_new ();
           g_object_set (view,
-                        "gimp",         GIMP_CONTEXT (private->info)->gimp,
+                        "gimp",         GIMP_TOOL_PRESET (private->info)->gimp,
                         "border-width", CURVE_BORDER,
                         NULL);
           gtk_widget_set_size_request (view,
diff --git a/app/widgets/gimpdevicemanager.c b/app/widgets/gimpdevicemanager.c
index 89582a3..fef68c8 100644
--- a/app/widgets/gimpdevicemanager.c
+++ b/app/widgets/gimpdevicemanager.c
@@ -27,10 +27,13 @@
 
 #include "widgets-types.h"
 
+#include "config/gimpconfig-utils.h"
 #include "config/gimpguiconfig.h"
 
 #include "core/gimp.h"
+#include "core/gimpcontext.h"
 #include "core/gimpmarshal.h"
+#include "core/gimptoolinfo.h"
 
 #include "gimpdeviceinfo.h"
 #include "gimpdevicemanager.h"
@@ -50,40 +53,48 @@ struct _GimpDeviceManagerPrivate
   Gimp           *gimp;
   GHashTable     *displays;
   GimpDeviceInfo *current_device;
+  GimpToolInfo   *active_tool;
 };
 
 #define GET_PRIVATE(obj) (((GimpDeviceManager *) (obj))->priv)
 
 
-static void   gimp_device_manager_constructed    (GObject           *object);
-static void   gimp_device_manager_dispose        (GObject           *object);
-static void   gimp_device_manager_finalize       (GObject           *object);
-static void   gimp_device_manager_set_property   (GObject           *object,
-                                                  guint              property_id,
-                                                  const GValue      *value,
-                                                  GParamSpec        *pspec);
-static void   gimp_device_manager_get_property   (GObject           *object,
-                                                  guint              property_id,
-                                                  GValue            *value,
-                                                  GParamSpec        *pspec);
-
-static void   gimp_device_manager_display_opened (GdkDisplayManager *disp_manager,
-                                                  GdkDisplay        *display,
-                                                  GimpDeviceManager *manager);
-static void   gimp_device_manager_display_closed (GdkDisplay        *display,
-                                                  gboolean           is_error,
-                                                  GimpDeviceManager *manager);
-
-static void   gimp_device_manager_device_added   (GdkDisplay        *gdk_display,
-                                                  GdkDevice         *device,
-                                                  GimpDeviceManager *manager);
-static void   gimp_device_manager_device_removed (GdkDisplay        *gdk_display,
-                                                  GdkDevice         *device,
-                                                  GimpDeviceManager *manager);
-
-static void   gimp_device_manager_config_notify  (GimpGuiConfig     *config,
-                                                  const GParamSpec  *pspec,
-                                                  GimpDeviceManager *manager);
+static void   gimp_device_manager_constructed     (GObject           *object);
+static void   gimp_device_manager_dispose         (GObject           *object);
+static void   gimp_device_manager_finalize        (GObject           *object);
+static void   gimp_device_manager_set_property    (GObject           *object,
+                                                   guint              property_id,
+                                                   const GValue      *value,
+                                                   GParamSpec        *pspec);
+static void   gimp_device_manager_get_property    (GObject           *object,
+                                                   guint              property_id,
+                                                   GValue            *value,
+                                                   GParamSpec        *pspec);
+
+static void   gimp_device_manager_display_opened  (GdkDisplayManager *disp_manager,
+                                                   GdkDisplay        *display,
+                                                   GimpDeviceManager *manager);
+static void   gimp_device_manager_display_closed  (GdkDisplay        *display,
+                                                   gboolean           is_error,
+                                                   GimpDeviceManager *manager);
+
+static void   gimp_device_manager_device_added    (GdkDisplay        *gdk_display,
+                                                   GdkDevice         *device,
+                                                   GimpDeviceManager *manager);
+static void   gimp_device_manager_device_removed  (GdkDisplay        *gdk_display,
+                                                   GdkDevice         *device,
+                                                   GimpDeviceManager *manager);
+
+static void   gimp_device_manager_config_notify   (GimpGuiConfig     *config,
+                                                   const GParamSpec  *pspec,
+                                                   GimpDeviceManager *manager);
+
+static void   gimp_device_manager_tool_changed    (GimpContext       *user_context,
+                                                   GimpToolInfo      *tool_info,
+                                                   GimpDeviceManager *manager);
+
+static void   gimp_device_manager_connect_tool    (GimpDeviceManager *manager);
+static void   gimp_device_manager_disconnect_tool (GimpDeviceManager *manager);
 
 
 G_DEFINE_TYPE (GimpDeviceManager, gimp_device_manager, GIMP_TYPE_LIST)
@@ -141,6 +152,8 @@ gimp_device_manager_constructed (GObject *object)
   GSList                   *displays;
   GSList                   *list;
   GdkDisplay               *display;
+  GimpDeviceInfo           *device_info;
+  GimpContext              *user_context;
 
   G_OBJECT_CLASS (parent_class)->constructed (object);
 
@@ -166,17 +179,29 @@ gimp_device_manager_constructed (GObject *object)
 
   display = gdk_display_get_default ();
 
-  private->current_device =
+  device_info =
     gimp_device_info_get_by_device (gdk_display_get_core_pointer (display));
 
+  gimp_device_manager_set_current_device (manager, device_info);
+
   g_signal_connect_object (private->gimp->config, "notify::devices-share-tool",
                            G_CALLBACK (gimp_device_manager_config_notify),
                            manager, 0);
+
+  user_context = gimp_get_user_context (private->gimp);
+
+  g_signal_connect_object (user_context, "tool-changed",
+                           G_CALLBACK (gimp_device_manager_tool_changed),
+                           manager, 0);
 }
 
 static void
 gimp_device_manager_dispose (GObject *object)
 {
+  GimpDeviceManager *manager = GIMP_DEVICE_MANAGER (object);
+
+  gimp_device_manager_disconnect_tool (manager);
+
   g_signal_handlers_disconnect_by_func (gdk_display_manager_get (),
                                         gimp_device_manager_display_opened,
                                         object);
@@ -277,20 +302,29 @@ gimp_device_manager_set_current_device (GimpDeviceManager *manager,
 
   config = GIMP_GUI_CONFIG (private->gimp->config);
 
-  if (! config->devices_share_tool)
+  if (! config->devices_share_tool && private->current_device)
     {
-      gimp_context_set_parent (GIMP_CONTEXT (private->current_device), NULL);
+      gimp_device_manager_disconnect_tool (manager);
     }
 
   private->current_device = info;
 
-  if (! config->devices_share_tool)
+  if (! config->devices_share_tool && private->current_device)
     {
       GimpContext *user_context = gimp_get_user_context (private->gimp);
 
-      gimp_context_copy_properties (GIMP_CONTEXT (info), user_context,
-                                    GIMP_DEVICE_INFO_CONTEXT_MASK);
-      gimp_context_set_parent (GIMP_CONTEXT (info), user_context);
+      g_signal_handlers_block_by_func (user_context,
+                                       gimp_device_manager_tool_changed,
+                                       manager);
+
+      gimp_device_info_restore_tool (private->current_device);
+
+      g_signal_handlers_unblock_by_func (user_context,
+                                         gimp_device_manager_tool_changed,
+                                         manager);
+
+      private->active_tool = gimp_context_get_tool (user_context);
+      gimp_device_manager_connect_tool (manager);
     }
 
   g_object_notify (G_OBJECT (manager), "current-device");
@@ -299,7 +333,6 @@ gimp_device_manager_set_current_device (GimpDeviceManager *manager,
 
 /*  private functions  */
 
-
 static void
 gimp_device_manager_display_opened (GdkDisplayManager *disp_manager,
                                     GdkDisplay        *gdk_display,
@@ -431,16 +464,87 @@ gimp_device_manager_config_notify (GimpGuiConfig     *config,
 
   current_device = gimp_device_manager_get_current_device (manager);
 
-  if (GIMP_GUI_CONFIG (private->gimp->config)->devices_share_tool)
+  if (config->devices_share_tool)
     {
-      gimp_context_set_parent (GIMP_CONTEXT (current_device), NULL);
+      gimp_device_manager_disconnect_tool (manager);
+      gimp_device_info_save_tool (current_device);
     }
   else
     {
       GimpContext *user_context = gimp_get_user_context (private->gimp);
 
-      gimp_context_copy_properties (GIMP_CONTEXT (current_device), user_context,
-                                    GIMP_DEVICE_INFO_CONTEXT_MASK);
-      gimp_context_set_parent (GIMP_CONTEXT (current_device), user_context);
+      g_signal_handlers_block_by_func (user_context,
+                                       gimp_device_manager_tool_changed,
+                                       manager);
+
+      gimp_device_info_restore_tool (private->current_device);
+
+      g_signal_handlers_unblock_by_func (user_context,
+                                         gimp_device_manager_tool_changed,
+                                         manager);
+
+      private->active_tool = gimp_context_get_tool (user_context);
+      gimp_device_manager_connect_tool (manager);
+    }
+}
+
+static void
+gimp_device_manager_tool_changed (GimpContext       *user_context,
+                                  GimpToolInfo      *tool_info,
+                                  GimpDeviceManager *manager)
+{
+  GimpDeviceManagerPrivate *private = GET_PRIVATE (manager);
+  GimpGuiConfig            *config;
+
+  config = GIMP_GUI_CONFIG (private->gimp->config);
+
+  if (! config->devices_share_tool)
+    {
+      gimp_device_manager_disconnect_tool (manager);
+    }
+
+  private->active_tool = tool_info;
+
+  if (! config->devices_share_tool)
+    {
+      gimp_device_info_save_tool (private->current_device);
+      gimp_device_manager_connect_tool (manager);
+    }
+}
+
+static void
+gimp_device_manager_connect_tool (GimpDeviceManager *manager)
+{
+  GimpDeviceManagerPrivate *private = GET_PRIVATE (manager);
+  GimpGuiConfig            *config;
+
+  config = GIMP_GUI_CONFIG (private->gimp->config);
+
+  if (! config->devices_share_tool &&
+      private->active_tool && private->current_device)
+    {
+      GimpToolPreset *preset = GIMP_TOOL_PRESET (private->current_device);
+
+      gimp_config_connect (G_OBJECT (private->active_tool->tool_options),
+                           G_OBJECT (preset->tool_options),
+                           NULL);
+    }
+}
+
+static void
+gimp_device_manager_disconnect_tool (GimpDeviceManager *manager)
+{
+  GimpDeviceManagerPrivate *private = GET_PRIVATE (manager);
+  GimpGuiConfig            *config;
+
+  config = GIMP_GUI_CONFIG (private->gimp->config);
+
+  if (! config->devices_share_tool &&
+      private->active_tool && private->current_device)
+    {
+      GimpToolPreset *preset = GIMP_TOOL_PRESET (private->current_device);
+
+      gimp_config_disconnect (G_OBJECT (private->active_tool->tool_options),
+                              G_OBJECT (preset->tool_options));
     }
 }
diff --git a/app/widgets/gimpdevices.c b/app/widgets/gimpdevices.c
index b599223..2a1edc9 100644
--- a/app/widgets/gimpdevices.c
+++ b/app/widgets/gimpdevices.c
@@ -29,6 +29,7 @@
 #include "config/gimpguiconfig.h"
 
 #include "core/gimp.h"
+#include "core/gimpcontext.h"
 #include "core/gimpdatafactory.h"
 #include "core/gimperror.h"
 #include "core/gimpgradient.h"
@@ -87,7 +88,6 @@ void
 gimp_devices_restore (Gimp *gimp)
 {
   GimpDeviceManager *manager;
-  GimpContext       *user_context;
   GList             *list;
   GFile             *file;
   GError            *error = NULL;
@@ -98,17 +98,13 @@ gimp_devices_restore (Gimp *gimp)
 
   g_return_if_fail (GIMP_IS_DEVICE_MANAGER (manager));
 
-  user_context = gimp_get_user_context (gimp);
-
   for (list = GIMP_LIST (manager)->queue->head;
        list;
        list = g_list_next (list))
     {
       GimpDeviceInfo *device_info = list->data;
 
-      gimp_context_copy_properties (user_context, GIMP_CONTEXT (device_info),
-                                    GIMP_DEVICE_INFO_CONTEXT_MASK);
-
+      gimp_device_info_save_tool (device_info);
       gimp_device_info_set_default_tool (device_info);
     }
 
@@ -137,9 +133,7 @@ gimp_devices_restore (Gimp *gimp)
 
       current_device = gimp_device_manager_get_current_device (manager);
 
-      gimp_context_copy_properties (GIMP_CONTEXT (current_device), user_context,
-                                    GIMP_DEVICE_INFO_CONTEXT_MASK);
-      gimp_context_set_parent (GIMP_CONTEXT (current_device), user_context);
+      gimp_device_info_restore_tool (current_device);
     }
 }
 
diff --git a/app/widgets/gimpdevicestatus.c b/app/widgets/gimpdevicestatus.c
index a274979..40372b5 100644
--- a/app/widgets/gimpdevicestatus.c
+++ b/app/widgets/gimpdevicestatus.c
@@ -34,6 +34,7 @@
 
 #include "core/gimp.h"
 #include "core/gimpbrush.h"
+#include "core/gimpcontext.h"
 #include "core/gimpdatafactory.h"
 #include "core/gimpgradient.h"
 #include "core/gimplist.h"
@@ -66,16 +67,23 @@ enum
 
 struct _GimpDeviceStatusEntry
 {
-  GimpDeviceInfo *device_info;
-
-  GtkWidget      *ebox;
-  GtkWidget      *options_hbox;
-  GtkWidget      *tool;
-  GtkWidget      *foreground;
-  GtkWidget      *background;
-  GtkWidget      *brush;
-  GtkWidget      *pattern;
-  GtkWidget      *gradient;
+  GimpDeviceInfo  *device_info;
+  GimpContext     *context;
+  GimpToolOptions *tool_options;
+
+  GtkWidget       *ebox;
+  GtkWidget       *options_hbox;
+  GtkWidget       *tool;
+  GtkWidget       *foreground;
+  GtkWidget       *foreground_none;
+  GtkWidget       *background;
+  GtkWidget       *background_none;
+  GtkWidget       *brush;
+  GtkWidget       *brush_none;
+  GtkWidget       *pattern;
+  GtkWidget       *pattern_none;
+  GtkWidget       *gradient;
+  GtkWidget       *gradient_none;
 };
 
 
@@ -99,7 +107,8 @@ static void gimp_device_status_notify_device   (GimpDeviceManager     *manager,
 static void gimp_device_status_config_notify   (GimpGuiConfig         *config,
                                                 const GParamSpec      *pspec,
                                                 GimpDeviceStatus      *status);
-static void gimp_device_status_update_entry    (GimpDeviceInfo        *device_info,
+static void gimp_device_status_notify_info     (GimpDeviceInfo        *device_info,
+                                                const GParamSpec      *pspec,
                                                 GimpDeviceStatusEntry *entry);
 static void gimp_device_status_save_clicked    (GtkWidget             *button,
                                                 GimpDeviceStatus      *status);
@@ -199,9 +208,10 @@ gimp_device_status_dispose (GObject *object)
           GimpDeviceStatusEntry *entry = list->data;
 
           g_signal_handlers_disconnect_by_func (entry->device_info,
-                                                gimp_device_status_update_entry,
+                                                gimp_device_status_notify_info,
                                                 entry);
 
+          g_object_unref (entry->context);
           g_slice_free (GimpDeviceStatusEntry, entry);
         }
 
@@ -237,13 +247,31 @@ gimp_device_status_set_property (GObject      *object,
 }
 
 static void
+pack_prop_widget (GtkBox     *hbox,
+                  GtkWidget  *widget,
+                  GtkWidget **none_widget)
+{
+  GtkSizeGroup *size_group = gtk_size_group_new (GTK_SIZE_GROUP_HORIZONTAL);
+
+  gtk_box_pack_start (GTK_BOX (hbox), widget, FALSE, FALSE, 0);
+  gtk_size_group_add_widget (size_group, widget);
+  gtk_widget_show (widget);
+
+  *none_widget = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
+  gtk_box_pack_start (GTK_BOX (hbox), *none_widget, FALSE, FALSE, 0);
+  gtk_size_group_add_widget (size_group, *none_widget);
+
+  g_object_unref (size_group);
+}
+
+static void
 gimp_device_status_device_add (GimpContainer    *devices,
                                GimpDeviceInfo   *device_info,
                                GimpDeviceStatus *status)
 {
-  GimpContext           *context = GIMP_CONTEXT (device_info);
   GimpDeviceStatusEntry *entry;
   GClosure              *closure;
+  GParamSpec            *pspec;
   GtkWidget             *vbox;
   GtkWidget             *hbox;
   GtkWidget             *label;
@@ -254,11 +282,24 @@ gimp_device_status_device_add (GimpContainer    *devices,
   status->devices = g_list_prepend (status->devices, entry);
 
   entry->device_info = device_info;
-
-  closure = g_cclosure_new (G_CALLBACK (gimp_device_status_update_entry),
+  entry->context     = gimp_context_new (GIMP_TOOL_PRESET (device_info)->gimp,
+                                         gimp_object_get_name (device_info),
+                                         NULL);
+
+  gimp_context_define_properties (entry->context,
+                                  GIMP_CONTEXT_PROP_MASK_TOOL       |
+                                  GIMP_CONTEXT_PROP_MASK_FOREGROUND |
+                                  GIMP_CONTEXT_PROP_MASK_BACKGROUND |
+                                  GIMP_CONTEXT_PROP_MASK_BRUSH      |
+                                  GIMP_CONTEXT_PROP_MASK_PATTERN    |
+                                  GIMP_CONTEXT_PROP_MASK_GRADIENT,
+                                  FALSE);
+
+  closure = g_cclosure_new (G_CALLBACK (gimp_device_status_notify_info),
                             entry, NULL);
   g_object_watch_closure (G_OBJECT (status), closure);
-  g_signal_connect_closure (device_info, "changed", closure, FALSE);
+  g_signal_connect_closure (device_info, "notify", closure,
+                            FALSE);
 
   entry->ebox = gtk_event_box_new ();
   gtk_box_pack_start (GTK_BOX (status->vbox), entry->ebox,
@@ -299,41 +340,38 @@ gimp_device_status_device_add (GimpContainer    *devices,
 
   /*  the tool  */
 
-  entry->tool = gimp_prop_view_new (G_OBJECT (context), "tool",
-                                    context, CELL_SIZE);
+  entry->tool = gimp_prop_view_new (G_OBJECT (entry->context), "tool",
+                                    entry->context, CELL_SIZE);
   gtk_box_pack_start (GTK_BOX (hbox), entry->tool, FALSE, FALSE, 0);
   gtk_widget_show (entry->tool);
 
   /*  the foreground color  */
 
-  entry->foreground = gimp_prop_color_area_new (G_OBJECT (context),
+  entry->foreground = gimp_prop_color_area_new (G_OBJECT (entry->context),
                                                 "foreground",
                                                 CELL_SIZE, CELL_SIZE,
                                                 GIMP_COLOR_AREA_FLAT);
   gtk_widget_add_events (entry->foreground,
                          GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK);
-  gtk_box_pack_start (GTK_BOX (hbox), entry->foreground, FALSE, FALSE, 0);
-  gtk_widget_show (entry->foreground);
+  pack_prop_widget (GTK_BOX (hbox), entry->foreground, &entry->foreground_none);
 
   /*  the background color  */
 
-  entry->background = gimp_prop_color_area_new (G_OBJECT (context),
+  entry->background = gimp_prop_color_area_new (G_OBJECT (entry->context),
                                                 "background",
                                                 CELL_SIZE, CELL_SIZE,
                                                 GIMP_COLOR_AREA_FLAT);
   gtk_widget_add_events (entry->background,
                          GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK);
-  gtk_box_pack_start (GTK_BOX (hbox), entry->background, FALSE, FALSE, 0);
-  gtk_widget_show (entry->background);
+  pack_prop_widget (GTK_BOX (hbox), entry->background, &entry->background_none);
 
   /*  the brush  */
 
-  entry->brush = gimp_prop_view_new (G_OBJECT (context), "brush",
-                                     context, CELL_SIZE);
+  entry->brush = gimp_prop_view_new (G_OBJECT (entry->context), "brush",
+                                     entry->context, CELL_SIZE);
   GIMP_VIEW (entry->brush)->clickable  = TRUE;
   GIMP_VIEW (entry->brush)->show_popup = TRUE;
-  gtk_box_pack_start (GTK_BOX (hbox), entry->brush, FALSE, FALSE, 0);
-  gtk_widget_show (entry->brush);
+  pack_prop_widget (GTK_BOX (hbox), entry->brush, &entry->brush_none);
 
   g_signal_connect (entry->brush, "clicked",
                     G_CALLBACK (gimp_device_status_view_clicked),
@@ -341,12 +379,11 @@ gimp_device_status_device_add (GimpContainer    *devices,
 
   /*  the pattern  */
 
-  entry->pattern = gimp_prop_view_new (G_OBJECT (context), "pattern",
-                                       context, CELL_SIZE);
+  entry->pattern = gimp_prop_view_new (G_OBJECT (entry->context), "pattern",
+                                       entry->context, CELL_SIZE);
   GIMP_VIEW (entry->pattern)->clickable  = TRUE;
   GIMP_VIEW (entry->pattern)->show_popup = TRUE;
-  gtk_box_pack_start (GTK_BOX (hbox), entry->pattern, FALSE, FALSE, 0);
-  gtk_widget_show (entry->pattern);
+  pack_prop_widget (GTK_BOX (hbox), entry->pattern, &entry->pattern_none);
 
   g_signal_connect (entry->pattern, "clicked",
                     G_CALLBACK (gimp_device_status_view_clicked),
@@ -354,18 +391,19 @@ gimp_device_status_device_add (GimpContainer    *devices,
 
   /*  the gradient  */
 
-  entry->gradient = gimp_prop_view_new (G_OBJECT (context), "gradient",
-                                        context, 2 * CELL_SIZE);
+  entry->gradient = gimp_prop_view_new (G_OBJECT (entry->context), "gradient",
+                                        entry->context, 2 * CELL_SIZE);
   GIMP_VIEW (entry->gradient)->clickable  = TRUE;
   GIMP_VIEW (entry->gradient)->show_popup = TRUE;
-  gtk_box_pack_start (GTK_BOX (hbox), entry->gradient, FALSE, FALSE, 0);
-  gtk_widget_show (entry->gradient);
+  pack_prop_widget (GTK_BOX (hbox), entry->gradient, &entry->gradient_none);
 
   g_signal_connect (entry->gradient, "clicked",
                     G_CALLBACK (gimp_device_status_view_clicked),
                     "gimp-gradient-list|gimp-gradient-grid");
 
-  gimp_device_status_update_entry (device_info, entry);
+  pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (device_info),
+                                        "tool-options");
+  gimp_device_status_notify_info (device_info, pspec, entry);
 }
 
 static void
@@ -384,9 +422,10 @@ gimp_device_status_device_remove (GimpContainer    *devices,
           status->devices = g_list_remove (status->devices, entry);
 
           g_signal_handlers_disconnect_by_func (entry->device_info,
-                                                gimp_device_status_update_entry,
+                                                gimp_device_status_notify_info,
                                                 entry);
 
+          g_object_unref (entry->context);
           g_slice_free (GimpDeviceStatusEntry, entry);
 
           return;
@@ -445,9 +484,52 @@ gimp_device_status_config_notify (GimpGuiConfig    *config,
 }
 
 static void
-gimp_device_status_update_entry (GimpDeviceInfo        *device_info,
-                                 GimpDeviceStatusEntry *entry)
+toggle_prop_visible (GtkWidget *widget,
+                     GtkWidget *widget_none,
+                     gboolean   available)
 {
+  gtk_widget_set_visible (widget, available);
+  gtk_widget_set_visible (widget_none, ! available);
+}
+
+static void
+gimp_device_status_notify_info (GimpDeviceInfo        *device_info,
+                                const GParamSpec      *pspec,
+                                GimpDeviceStatusEntry *entry)
+{
+  GimpToolOptions *tool_options = GIMP_TOOL_PRESET (device_info)->tool_options;
+
+  if (tool_options != entry->tool_options)
+    {
+      GimpContextPropMask serialize_props;
+
+      entry->tool_options = tool_options;
+      gimp_context_set_parent (entry->context, GIMP_CONTEXT (tool_options));
+
+      serialize_props =
+        gimp_context_get_serialize_properties (GIMP_CONTEXT (tool_options));
+
+      toggle_prop_visible (entry->foreground,
+                           entry->foreground_none,
+                           serialize_props & GIMP_CONTEXT_PROP_MASK_FOREGROUND);
+
+      toggle_prop_visible (entry->background,
+                           entry->background_none,
+                           serialize_props & GIMP_CONTEXT_PROP_MASK_BACKGROUND);
+
+      toggle_prop_visible (entry->brush,
+                           entry->brush_none,
+                           serialize_props & GIMP_CONTEXT_PROP_MASK_BRUSH);
+
+      toggle_prop_visible (entry->pattern,
+                           entry->pattern_none,
+                           serialize_props & GIMP_CONTEXT_PROP_MASK_PATTERN);
+
+      toggle_prop_visible (entry->gradient,
+                           entry->gradient_none,
+                           serialize_props & GIMP_CONTEXT_PROP_MASK_GRADIENT);
+    }
+
   if (! gimp_device_info_get_device (device_info, NULL) ||
       gimp_device_info_get_mode (device_info) == GDK_MODE_DISABLED)
     {
@@ -455,22 +537,24 @@ gimp_device_status_update_entry (GimpDeviceInfo        *device_info,
     }
   else
     {
-      GimpContext *context = GIMP_CONTEXT (device_info);
-      GimpRGB      color;
-      guchar       r, g, b;
-      gchar        buf[64];
+      gtk_widget_show (entry->ebox);
+    }
 
-      gimp_context_get_foreground (context, &color);
+  if (! strcmp (pspec->name, "tool-options"))
+    {
+      GimpRGB color;
+      guchar  r, g, b;
+      gchar   buf[64];
+
+      gimp_context_get_foreground (entry->context, &color);
       gimp_rgb_get_uchar (&color, &r, &g, &b);
       g_snprintf (buf, sizeof (buf), _("Foreground: %d, %d, %d"), r, g, b);
       gimp_help_set_help_data (entry->foreground, buf, NULL);
 
-      gimp_context_get_background (context, &color);
+      gimp_context_get_background (entry->context, &color);
       gimp_rgb_get_uchar (&color, &r, &g, &b);
       g_snprintf (buf, sizeof (buf), _("Background: %d, %d, %d"), r, g, b);
       gimp_help_set_help_data (entry->background, buf, NULL);
-
-      gtk_widget_show (entry->ebox);
     }
 }
 
diff --git a/app/widgets/gimptoolpreseteditor.c b/app/widgets/gimptoolpreseteditor.c
index 5555327..62db145 100644
--- a/app/widgets/gimptoolpreseteditor.c
+++ b/app/widgets/gimptoolpreseteditor.c
@@ -281,14 +281,17 @@ gimp_tool_preset_editor_sync_data (GimpToolPresetEditor *editor)
                                    gimp_tool_preset_editor_notify_model,
                                    editor);
 
-  gimp_config_copy (GIMP_CONFIG (data_editor->data),
-                    GIMP_CONFIG (priv->tool_preset_model),
+  gimp_config_sync (G_OBJECT (data_editor->data),
+                    G_OBJECT (priv->tool_preset_model),
                     GIMP_CONFIG_PARAM_SERIALIZE);
 
   g_signal_handlers_unblock_by_func (priv->tool_preset_model,
                                      gimp_tool_preset_editor_notify_model,
                                      editor);
 
+  if (! priv->tool_preset_model->tool_options)
+    return;
+
   tool_info = priv->tool_preset_model->tool_options->tool_info;
 
   icon_name = gimp_viewable_get_icon_name (GIMP_VIEWABLE (tool_info));
@@ -307,7 +310,8 @@ gimp_tool_preset_editor_sync_data (GimpToolPresetEditor *editor)
 
   gtk_widget_set_sensitive (priv->fg_bg_toggle,
                             (serialize_props &
-                             GIMP_CONTEXT_PROP_MASK_FOREGROUND) != 0);
+                             (GIMP_CONTEXT_PROP_MASK_FOREGROUND |
+                              GIMP_CONTEXT_PROP_MASK_BACKGROUND)) != 0);
   gtk_widget_set_sensitive (priv->brush_toggle,
                             (serialize_props &
                              GIMP_CONTEXT_PROP_MASK_BRUSH) != 0);
@@ -344,8 +348,8 @@ gimp_tool_preset_editor_notify_model (GimpToolPreset       *options,
                                        gimp_tool_preset_editor_notify_data,
                                        editor);
 
-      gimp_config_copy (GIMP_CONFIG (editor->priv->tool_preset_model),
-                        GIMP_CONFIG (data_editor->data),
+      gimp_config_sync (G_OBJECT (editor->priv->tool_preset_model),
+                        G_OBJECT (data_editor->data),
                         GIMP_CONFIG_PARAM_SERIALIZE);
 
       g_signal_handlers_unblock_by_func (data_editor->data,
@@ -365,8 +369,8 @@ gimp_tool_preset_editor_notify_data (GimpToolPreset       *options,
                                    gimp_tool_preset_editor_notify_model,
                                    editor);
 
-  gimp_config_copy (GIMP_CONFIG (data_editor->data),
-                    GIMP_CONFIG (editor->priv->tool_preset_model),
+  gimp_config_sync (G_OBJECT (data_editor->data),
+                    G_OBJECT (editor->priv->tool_preset_model),
                     GIMP_CONFIG_PARAM_SERIALIZE);
 
   g_signal_handlers_unblock_by_func (editor->priv->tool_preset_model,



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