Tool System: show manipulators at startup

Support duplicating, switching workspaces too.

source/blender/editors/screen/workspace_edit.c

@@ -202,6 +202,9 @@ bool ED_workspace_change(
 		BLI_assert(BKE_workspace_view_layer_get(workspace_new) != NULL);
 		BLI_assert(CTX_wm_workspace(C) == workspace_new);
 
+		WM_toolsystem_unlink(C, workspace_old);
+		WM_toolsystem_link(C, workspace_new);
+
 		return true;
 	}
 
@@ -229,6 +232,8 @@ WorkSpace *ED_workspace_duplicate(
 #endif
 	BLI_duplicatelist(transform_orientations_new, transform_orientations_old);
 
+	workspace_new->tool = workspace_old->tool;
+
 	for (WorkSpaceLayout *layout_old = layouts_old->first; layout_old; layout_old = layout_old->next) {
 		WorkSpaceLayout *layout_new = ED_workspace_layout_duplicate(workspace_new, layout_old, win);
 

source/blender/windowmanager/CMakeLists.txt

@@ -72,6 +72,7 @@ set(SRC
 	intern/wm_subwindow.c
 	intern/wm_window.c
 	intern/wm_stereo.c
+	intern/wm_toolsystem.c
 	manipulators/intern/wm_manipulator.c
 	manipulators/intern/wm_manipulator_group.c
 	manipulators/intern/wm_manipulator_group_type.c

source/blender/windowmanager/WM_api.h

@@ -66,6 +66,7 @@ struct ImageFormatData;
 struct ARegion;
 struct ScrArea;
 struct Main;
+struct bToolDef;
 
 #ifdef WITH_INPUT_NDOF
 struct wmNDOFMotionData;
@@ -563,6 +564,13 @@ bool        WM_event_is_tablet(const struct wmEvent *event);
 bool        WM_event_is_ime_switch(const struct wmEvent *event);
 #endif
 
+/* wm_toolsystem.c  */
+void WM_toolsystem_unlink(struct bContext *C, struct WorkSpace *workspace);
+void WM_toolsystem_link(struct bContext *C, struct WorkSpace *workspace);
+
+void WM_toolsystem_set(struct bContext *C, const struct bToolDef *tool);
+void WM_toolsystem_init(struct bContext *C);
+
 #ifdef __cplusplus
 }
 #endif

source/blender/windowmanager/intern/wm_files.c

@@ -517,6 +517,9 @@ static void wm_file_read_post(bContext *C, const bool is_startup_file, const boo
 		 * a blend file and do anything since the screen
 		 * won't be set to a valid value again */
 		CTX_wm_window_set(C, NULL); /* exits queues */
+
+		/* Ensure tools are registered. */
+		WM_toolsystem_init(C);
 	}
 
 	if (!G.background) {

source/blender/windowmanager/intern/wm_operators.c

@@ -1812,35 +1812,16 @@ static void WM_OT_operator_defaults(wmOperatorType *ot)
 
 static int wm_operator_tool_set_exec(bContext *C, wmOperator *op)
 {
-	Main *bmain = CTX_data_main(C);
-	WorkSpace *workspace = CTX_wm_workspace(C);
 	ScrArea *sa = CTX_wm_area(C);
-	char id_keymap[sizeof(workspace->tool.keymap)];
-	char id_manipulator_group[sizeof(workspace->tool.manipulator_group)];
-	RNA_string_get(op->ptr, "keymap", id_keymap);
-	RNA_string_get(op->ptr, "manipulator_group", id_manipulator_group);
-	int index = RNA_int_get(op->ptr, "index");
 
-	workspace->tool.index = index;
+	bToolDef tool_def = {0};
 
-	if (workspace->tool.manipulator_group[0]) {
-		wmManipulatorGroupType *wgt = WM_manipulatorgrouptype_find(workspace->tool.manipulator_group, false);
-		if (wgt != NULL) {
-			wmManipulatorMapType *mmap_type = WM_manipulatormaptype_ensure(&wgt->mmap_params);
-			WM_manipulatormaptype_group_unlink(C, bmain, mmap_type, wgt);
-		}
-	}
+	tool_def.index = RNA_int_get(op->ptr, "index");
+	tool_def.spacetype = sa->spacetype;
+	RNA_string_get(op->ptr, "keymap", tool_def.keymap);
+	RNA_string_get(op->ptr, "manipulator_group", tool_def.manipulator_group);
 
-	/* NOTE: we may want to move this logic into a function. */
-	{
-		BLI_strncpy(workspace->tool.keymap, id_keymap, sizeof(workspace->tool.keymap));
-		BLI_strncpy(workspace->tool.manipulator_group, id_manipulator_group, sizeof(workspace->tool.manipulator_group));
-		workspace->tool.spacetype = sa->spacetype;
-	}
-
-	if (workspace->tool.manipulator_group[0]) {
-		WM_manipulator_group_type_ensure(workspace->tool.manipulator_group);
-	}
+	WM_toolsystem_set(C, &tool_def);
 
 	/* For some reason redraw fails with menus (even though 'ar' isn't the menu's region). */
 	ED_area_tag_redraw(sa);

source/blender/windowmanager/intern/wm_toolsystem.c

@@ -0,0 +1,107 @@
+/*
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * 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 2
+ * 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, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+/** \file blender/windowmanager/intern/wm_toolsystem.c
+ *  \ingroup wm
+ *
+ * Experimental tool-system>
+ */
+
+#include <string.h>
+
+#include "BLI_utildefines.h"
+#include "BLI_string.h"
+
+#include "DNA_ID.h"
+#include "DNA_scene_types.h"
+#include "DNA_windowmanager_types.h"
+#include "DNA_workspace_types.h"
+
+#include "BKE_context.h"
+#include "BKE_library.h"
+#include "BKE_main.h"
+
+#include "WM_api.h"
+#include "WM_types.h"
+
+void WM_toolsystem_unlink(bContext *C, WorkSpace *workspace)
+{
+	Main *bmain = CTX_data_main(C);
+	wmWindowManager *wm = bmain->wm.first;
+
+	if (workspace->tool.manipulator_group[0]) {
+		wmManipulatorGroupType *wgt = WM_manipulatorgrouptype_find(workspace->tool.manipulator_group, false);
+		if (wgt != NULL) {
+			bool found = false;
+
+			/* Check another workspace isn't using this tool. */
+			for (wmWindow *win = wm->windows.first; win; win = win->next) {
+				const WorkSpace *workspace_iter = WM_window_get_active_workspace(win);
+				if (workspace != workspace_iter) {
+					if (STREQ(workspace->tool.manipulator_group, workspace_iter->tool.manipulator_group)) {
+						found = true;
+						break;
+					}
+				}
+			}
+
+			if (!found) {
+				wmManipulatorMapType *mmap_type = WM_manipulatormaptype_ensure(&wgt->mmap_params);
+				WM_manipulatormaptype_group_unlink(C, bmain, mmap_type, wgt);
+			}
+		}
+	}
+}
+
+void WM_toolsystem_link(bContext *UNUSED(C), WorkSpace *workspace)
+{
+	if (workspace->tool.manipulator_group[0]) {
+		WM_manipulator_group_type_ensure(workspace->tool.manipulator_group);
+	}
+}
+
+void WM_toolsystem_set(bContext *C, const bToolDef *tool)
+{
+	WorkSpace *workspace = CTX_wm_workspace(C);
+
+	WM_toolsystem_unlink(C, workspace);
+
+	workspace->tool.index = tool->index;
+	workspace->tool.spacetype = tool->spacetype;
+
+	if (&workspace->tool != tool) {
+		BLI_strncpy(workspace->tool.keymap, tool->keymap, sizeof(tool->keymap));
+		BLI_strncpy(workspace->tool.manipulator_group, tool->manipulator_group, sizeof(tool->manipulator_group));
+		workspace->tool.spacetype = tool->spacetype;
+	}
+
+	WM_toolsystem_link(C, workspace);
+}
+
+void WM_toolsystem_init(bContext *C)
+{
+	Main *bmain = CTX_data_main(C);
+	wmWindowManager *wm = bmain->wm.first;
+
+	for (wmWindow *win = wm->windows.first; win; win = win->next) {
+		WorkSpace *workspace = WM_window_get_active_workspace(win);
+		WM_toolsystem_link(C, workspace);
+	}
+}