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diff --git a/app/tools/gimp-tool-options-manager.c b/app/tools/gimp-tool-options-manager.c
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+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimp-tool-options-manager.c
+ * Copyright (C) 2018 Michael Natterer <mitch@gimp.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <gegl.h>
+#include <gtk/gtk.h>
+
+#include "libgimpconfig/gimpconfig.h"
+
+#include "tools-types.h"
+
+#include "config/gimpcoreconfig.h"
+
+#include "core/gimp.h"
+#include "core/gimpcontext.h"
+#include "core/gimptoolinfo.h"
+
+#include "paint/gimppaintoptions.h"
+
+#include "widgets/gimpwidgets-utils.h"
+
+#include "gimp-tool-options-manager.h"
+
+
+typedef struct _GimpToolOptionsManager GimpToolOptionsManager;
+
+struct _GimpToolOptionsManager
+{
+ Gimp *gimp;
+ GimpPaintOptions *global_paint_options;
+ GimpContextPropMask global_props;
+
+ GimpToolInfo *active_tool;
+};
+
+
+static GQuark manager_quark = 0;
+
+
+/* local function prototypes */
+
+static GimpContextPropMask
+ tool_options_manager_get_global_props
+ (GimpCoreConfig *config);
+
+static void tool_options_manager_global_notify (GimpCoreConfig *config,
+ const GParamSpec *pspec,
+ GimpToolOptionsManager *manager);
+static void tool_options_manager_paint_options_notify
+ (GimpPaintOptions *src,
+ const GParamSpec *pspec,
+ GimpPaintOptions *dest);
+
+static void tool_options_manager_copy_paint_props
+ (GimpPaintOptions *src,
+ GimpPaintOptions *dest,
+ GimpContextPropMask prop_mask);
+
+static void tool_options_manager_tool_changed (GimpContext *user_context,
+ GimpToolInfo *tool_info,
+ GimpToolOptionsManager *manager);
+
+
+/* public functions */
+
+void
+gimp_tool_options_manager_init (Gimp *gimp)
+{
+ GimpToolOptionsManager *manager;
+ GimpContext *user_context;
+ GimpCoreConfig *config;
+ GList *list;
+
+ g_return_if_fail (GIMP_IS_GIMP (gimp));
+ g_return_if_fail (manager_quark == 0);
+
+ manager_quark = g_quark_from_static_string ("gimp-tool-options-manager");
+
+ config = gimp->config;
+
+ manager = g_slice_new0 (GimpToolOptionsManager);
+
+ manager->gimp = gimp;
+
+ manager->global_paint_options =
+ g_object_new (GIMP_TYPE_PAINT_OPTIONS,
+ "gimp", gimp,
+ "name", "tool-options-manager-global-paint-options",
+ NULL);
+
+ manager->global_props = tool_options_manager_get_global_props (config);
+
+ g_object_set_qdata (G_OBJECT (gimp), manager_quark, manager);
+
+ user_context = gimp_get_user_context (gimp);
+
+ for (list = gimp_get_tool_info_iter (gimp);
+ list;
+ list = g_list_next (list))
+ {
+ GimpToolInfo *tool_info = list->data;
+
+ /* the global props that are actually used by the tool are
+ * always shared with the user context by undefining them...
+ */
+ gimp_context_define_properties (GIMP_CONTEXT (tool_info->tool_options),
+ manager->global_props &
+ tool_info->context_props,
+ FALSE);
+
+ /* ...and setting the user context as parent
+ */
+ gimp_context_set_parent (GIMP_CONTEXT (tool_info->tool_options),
+ user_context);
+
+ /* make sure paint tools also share their brush, dynamics,
+ * gradient properties if the resp. context properties are
+ * global
+ */
+ if (GIMP_IS_PAINT_OPTIONS (tool_info->tool_options))
+ {
+ g_signal_connect (tool_info->tool_options, "notify",
+ G_CALLBACK (tool_options_manager_paint_options_notify),
+ manager->global_paint_options);
+
+ g_signal_connect (manager->global_paint_options, "notify",
+ G_CALLBACK (tool_options_manager_paint_options_notify),
+ tool_info->tool_options);
+
+ tool_options_manager_copy_paint_props (manager->global_paint_options,
+ GIMP_PAINT_OPTIONS (tool_info->tool_options),
+ tool_info->context_props &
+ manager->global_props);
+ }
+ }
+
+ g_signal_connect (gimp->config, "notify::global-brush",
+ G_CALLBACK (tool_options_manager_global_notify),
+ manager);
+ g_signal_connect (gimp->config, "notify::global-dynamics",
+ G_CALLBACK (tool_options_manager_global_notify),
+ manager);
+ g_signal_connect (gimp->config, "notify::global-pattern",
+ G_CALLBACK (tool_options_manager_global_notify),
+ manager);
+ g_signal_connect (gimp->config, "notify::global-palette",
+ G_CALLBACK (tool_options_manager_global_notify),
+ manager);
+ g_signal_connect (gimp->config, "notify::global-gradient",
+ G_CALLBACK (tool_options_manager_global_notify),
+ manager);
+ g_signal_connect (gimp->config, "notify::global-font",
+ G_CALLBACK (tool_options_manager_global_notify),
+ manager);
+
+ g_signal_connect (user_context, "tool-changed",
+ G_CALLBACK (tool_options_manager_tool_changed),
+ manager);
+
+ tool_options_manager_tool_changed (user_context,
+ gimp_context_get_tool (user_context),
+ manager);
+}
+
+void
+gimp_tool_options_manager_exit (Gimp *gimp)
+{
+ GimpToolOptionsManager *manager;
+ GimpContext *user_context;
+ GList *list;
+
+ g_return_if_fail (GIMP_IS_GIMP (gimp));
+
+ manager = g_object_get_qdata (G_OBJECT (gimp), manager_quark);
+
+ g_return_if_fail (manager != NULL);
+
+ user_context = gimp_get_user_context (gimp);
+
+ g_signal_handlers_disconnect_by_func (user_context,
+ tool_options_manager_tool_changed,
+ manager);
+
+ g_signal_handlers_disconnect_by_func (gimp->config,
+ tool_options_manager_global_notify,
+ manager);
+
+ for (list = gimp_get_tool_info_iter (gimp);
+ list;
+ list = g_list_next (list))
+ {
+ GimpToolInfo *tool_info = list->data;
+
+ gimp_context_set_parent (GIMP_CONTEXT (tool_info->tool_options), NULL);
+
+ if (GIMP_IS_PAINT_OPTIONS (tool_info->tool_options))
+ {
+ g_signal_handlers_disconnect_by_func (tool_info->tool_options,
+ tool_options_manager_paint_options_notify,
+ manager->global_paint_options);
+
+ g_signal_handlers_disconnect_by_func (manager->global_paint_options,
+ tool_options_manager_paint_options_notify,
+ tool_info->tool_options);
+ }
+ }
+
+ g_clear_object (&manager->global_paint_options);
+
+ g_slice_free (GimpToolOptionsManager, manager);
+
+ g_object_set_qdata (G_OBJECT (gimp), manager_quark, NULL);
+}
+
+
+/* private functions */
+
+static GimpContextPropMask
+tool_options_manager_get_global_props (GimpCoreConfig *config)
+{
+ GimpContextPropMask global_props = 0;
+
+ /* FG and BG are always shared between all tools */
+ global_props |= GIMP_CONTEXT_PROP_MASK_FOREGROUND;
+ global_props |= GIMP_CONTEXT_PROP_MASK_BACKGROUND;
+
+ if (config->global_brush)
+ global_props |= GIMP_CONTEXT_PROP_MASK_BRUSH;
+ if (config->global_dynamics)
+ global_props |= GIMP_CONTEXT_PROP_MASK_DYNAMICS;
+ if (config->global_pattern)
+ global_props |= GIMP_CONTEXT_PROP_MASK_PATTERN;
+ if (config->global_palette)
+ global_props |= GIMP_CONTEXT_PROP_MASK_PALETTE;
+ if (config->global_gradient)
+ global_props |= GIMP_CONTEXT_PROP_MASK_GRADIENT;
+ if (config->global_font)
+ global_props |= GIMP_CONTEXT_PROP_MASK_FONT;
+
+ return global_props;
+}
+
+static void
+tool_options_manager_global_notify (GimpCoreConfig *config,
+ const GParamSpec *pspec,
+ GimpToolOptionsManager *manager)
+{
+ GimpContextPropMask global_props;
+ GimpContextPropMask enabled_global_props;
+ GimpContextPropMask disabled_global_props;
+ GList *list;
+
+ global_props = tool_options_manager_get_global_props (config);
+
+ enabled_global_props = global_props & ~manager->global_props;
+ disabled_global_props = manager->global_props & ~global_props;
+
+ /* copy the newly enabled global props to all tool options, and
+ * disconnect the newly disabled ones from the user context
+ */
+ for (list = gimp_get_tool_info_iter (manager->gimp);
+ list;
+ list = g_list_next (list))
+ {
+ GimpToolInfo *tool_info = list->data;
+
+ /* don't change the active tool, it is always fully connected
+ * to the user_context anyway because we set its
+ * defined/undefined context props in tool_changed()
+ */
+ if (tool_info == manager->active_tool)
+ continue;
+
+ /* defining the newly disabled ones disconnects them from the
+ * parent user context
+ */
+ gimp_context_define_properties (GIMP_CONTEXT (tool_info->tool_options),
+ tool_info->context_props &
+ disabled_global_props,
+ TRUE);
+
+ /* undefining the newly enabled ones copies the value from the
+ * parent user context
+ */
+ gimp_context_define_properties (GIMP_CONTEXT (tool_info->tool_options),
+ tool_info->context_props &
+ enabled_global_props,
+ FALSE);
+
+ if (GIMP_IS_PAINT_OPTIONS (tool_info->tool_options))
+ tool_options_manager_copy_paint_props (manager->global_paint_options,
+ GIMP_PAINT_OPTIONS (tool_info->tool_options),
+ tool_info->context_props &
+ enabled_global_props);
+ }
+
+ manager->global_props = global_props;
+}
+
+static void
+tool_options_manager_paint_options_notify (GimpPaintOptions *src,
+ const GParamSpec *pspec,
+ GimpPaintOptions *dest)
+{
+ Gimp *gimp = GIMP_CONTEXT (src)->gimp;
+ GimpCoreConfig *config = gimp->config;
+ GimpToolOptionsManager *manager;
+ GimpToolInfo *tool_info;
+ GimpContextPropMask prop_mask = 0;
+ gboolean active = FALSE;
+
+ manager = g_object_get_qdata (G_OBJECT (gimp), manager_quark);
+
+ /* one of the options is the global one, the other is the tool's,
+ * get the tool_info from the tool's options
+ */
+ if (manager->global_paint_options == src)
+ tool_info = gimp_context_get_tool (GIMP_CONTEXT (dest));
+ else
+ tool_info = gimp_context_get_tool (GIMP_CONTEXT (src));
+
+ if (tool_info == manager->active_tool)
+ active = TRUE;
+
+ if ((active || config->global_brush) &&
+ tool_info->context_props & GIMP_CONTEXT_PROP_MASK_BRUSH)
+ {
+ prop_mask |= GIMP_CONTEXT_PROP_MASK_BRUSH;
+ }
+
+ if ((active || config->global_dynamics) &&
+ tool_info->context_props & GIMP_CONTEXT_PROP_MASK_DYNAMICS)
+ {
+ prop_mask |= GIMP_CONTEXT_PROP_MASK_DYNAMICS;
+ }
+
+ if ((active || config->global_gradient) &&
+ tool_info->context_props & GIMP_CONTEXT_PROP_MASK_GRADIENT)
+ {
+ prop_mask |= GIMP_CONTEXT_PROP_MASK_GRADIENT;
+ }
+
+ if (gimp_paint_options_is_prop (pspec->name, prop_mask))
+ {
+ GValue value = G_VALUE_INIT;
+
+ g_value_init (&value, pspec->value_type);
+
+ g_object_get_property (G_OBJECT (src), pspec->name, &value);
+
+ g_signal_handlers_block_by_func (dest,
+ tool_options_manager_paint_options_notify,
+ src);
+
+ g_object_set_property (G_OBJECT (dest), pspec->name, &value);
+
+ g_signal_handlers_unblock_by_func (dest,
+ tool_options_manager_paint_options_notify,
+ src);
+
+ g_value_unset (&value);
+ }
+}
+
+static void
+tool_options_manager_copy_paint_props (GimpPaintOptions *src,
+ GimpPaintOptions *dest,
+ GimpContextPropMask prop_mask)
+{
+ g_signal_handlers_block_by_func (dest,
+ tool_options_manager_paint_options_notify,
+ src);
+
+ gimp_paint_options_copy_props (src, dest, prop_mask);
+
+ g_signal_handlers_unblock_by_func (dest,
+ tool_options_manager_paint_options_notify,
+ src);
+}
+
+static void
+tool_options_manager_tool_changed (GimpContext *user_context,
+ GimpToolInfo *tool_info,
+ GimpToolOptionsManager *manager)
+{
+ if (tool_info == manager->active_tool)
+ return;
+
+ /* FIXME: gimp_busy HACK
+ * the tool manager will stop the emission, so simply return
+ */
+ if (user_context->gimp->busy)
+ return;
+
+ if (manager->active_tool)
+ {
+ GimpToolInfo *active = manager->active_tool;
+
+ /* disconnect the old active tool from all context properties
+ * it uses, but are not currently global
+ */
+ gimp_context_define_properties (GIMP_CONTEXT (active->tool_options),
+ active->context_props &
+ ~manager->global_props,
+ TRUE);
+ }
+
+ manager->active_tool = tool_info;
+
+ if (manager->active_tool)
+ {
+ GimpToolInfo *active = manager->active_tool;
+
+ /* make sure the tool options GUI always exists, this call
+ * creates it if needed, so tools always have their option GUI
+ * available even if the tool options dockable is not open, see
+ * for example issue #3435
+ */
+ gimp_tools_get_tool_options_gui (active->tool_options);
+
+ /* copy the new tool's context properties that are not
+ * currently global to the user context, so they get used by
+ * everything
+ */
+ gimp_context_copy_properties (GIMP_CONTEXT (active->tool_options),
+ gimp_get_user_context (manager->gimp),
+ active->context_props &
+ ~manager->global_props);
+
+ if (GIMP_IS_PAINT_OPTIONS (active->tool_options))
+ tool_options_manager_copy_paint_props (GIMP_PAINT_OPTIONS (active->tool_options),
+ manager->global_paint_options,
+ active->context_props &
+ ~manager->global_props);
+
+ /* then, undefine these properties so the tool syncs with the
+ * user context automatically
+ */
+ gimp_context_define_properties (GIMP_CONTEXT (active->tool_options),
+ active->context_props &
+ ~manager->global_props,
+ FALSE);
+ }
+}
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