Commit: afd4bf869498782a56304cd127192161a0a40996
Author: Campbell Barton
Date:   Wed Feb 6 21:15:39 2019 +1100
Branches: master
https://developer.blender.org/rBafd4bf869498782a56304cd127192161a0a40996

Fix T61136: Header alignment preference has no effect

Users expect this to apply to existing files,
adjust this to apply on load, defaults to off.

===================================================================

M       release/scripts/startup/bl_ui/space_userpref.py
M       source/blender/blenkernel/BKE_screen.h
M       source/blender/blenkernel/intern/screen.c
M       source/blender/blenloader/intern/versioning_userdef.c
M       source/blender/editors/screen/screen_edit.c
M       source/blender/makesdna/DNA_userdef_types.h
M       source/blender/makesrna/intern/rna_userdef.c

===================================================================

diff --git a/release/scripts/startup/bl_ui/space_userpref.py 
b/release/scripts/startup/bl_ui/space_userpref.py
index 8db0689ad9c..814e527cbc5 100644
--- a/release/scripts/startup/bl_ui/space_userpref.py
+++ b/release/scripts/startup/bl_ui/space_userpref.py
@@ -210,7 +210,7 @@ class USERPREF_PT_interface_editors(PreferencePanel):
 
         flow = layout.grid_flow(row_major=False, columns=0, even_columns=True, 
even_rows=False, align=False)
 
-        flow.row().prop(view, "header_align_default", expand=True)
+        flow.row().prop(view, "header_align")
         flow.prop(system, "use_region_overlap")
         flow.prop(view, "show_layout_ui", text="Corner Splitting")
         flow.prop(view, "color_picker_type")
diff --git a/source/blender/blenkernel/BKE_screen.h 
b/source/blender/blenkernel/BKE_screen.h
index 60cfc15a928..d064929848d 100644
--- a/source/blender/blenkernel/BKE_screen.h
+++ b/source/blender/blenkernel/BKE_screen.h
@@ -357,4 +357,6 @@ void BKE_screen_remove_double_scredges(struct bScreen *sc);
 void BKE_screen_remove_unused_scredges(struct bScreen *sc);
 void BKE_screen_remove_unused_scrverts(struct bScreen *sc);
 
+void BKE_screen_header_alignment_reset(struct bScreen *screen);
+
 #endif
diff --git a/source/blender/blenkernel/intern/screen.c 
b/source/blender/blenkernel/intern/screen.c
index 2f1393e43d2..af3384d2023 100644
--- a/source/blender/blenkernel/intern/screen.c
+++ b/source/blender/blenkernel/intern/screen.c
@@ -846,3 +846,19 @@ bool BKE_screen_is_used(const bScreen *screen)
 {
        return (screen->winid != 0);
 }
+
+void BKE_screen_header_alignment_reset(bScreen *screen)
+{
+       int alignment = (U.uiflag & USER_HEADER_BOTTOM) ? RGN_ALIGN_BOTTOM : 
RGN_ALIGN_TOP;
+       for (ScrArea *sa = screen->areabase.first; sa; sa = sa->next) {
+               for (ARegion *ar = sa->regionbase.first; ar; ar = ar->next) {
+                       if (ar->regiontype == RGN_TYPE_HEADER) {
+                               if (ELEM(sa->spacetype, SPACE_FILE, 
SPACE_USERPREF, SPACE_OUTLINER, SPACE_BUTS)) {
+                                       ar->alignment = RGN_ALIGN_TOP;
+                                       continue;
+                               }
+                               ar->alignment = alignment;
+                       }
+               }
+       }
+}
diff --git a/source/blender/blenloader/intern/versioning_userdef.c 
b/source/blender/blenloader/intern/versioning_userdef.c
index c02f5638452..72e4e2d0fe1 100644
--- a/source/blender/blenloader/intern/versioning_userdef.c
+++ b/source/blender/blenloader/intern/versioning_userdef.c
@@ -455,7 +455,7 @@ void BLO_version_defaults_userpref_blend(Main *bmain, 
UserDef *userdef)
                        USER_FLAG_DEPRECATED_4);
 
                userdef->uiflag &= ~(
-                       USER_UIFLAG_DEPRECATED_8 |
+                       USER_HEADER_FROM_PREF |
                        USER_UIFLAG_DEPRECATED_12 |
                        USER_UIFLAG_DEPRECATED_22);
        }
diff --git a/source/blender/editors/screen/screen_edit.c 
b/source/blender/editors/screen/screen_edit.c
index 69a4bde4821..7d76140f741 100644
--- a/source/blender/editors/screen/screen_edit.c
+++ b/source/blender/editors/screen/screen_edit.c
@@ -477,6 +477,12 @@ void ED_screens_initialize(Main *bmain, wmWindowManager 
*wm)
                        ED_screen_set_active_region(NULL, win, 
&win->eventstate->x);
                }
        }
+
+       if (U.uiflag & USER_HEADER_FROM_PREF) {
+               for (bScreen *screen = bmain->screen.first; screen; screen = 
screen->id.next) {
+                       BKE_screen_header_alignment_reset(screen);
+               }
+       }
 }
 
 void ED_screen_ensure_updated(wmWindowManager *wm, wmWindow *win, bScreen 
*screen)
diff --git a/source/blender/makesdna/DNA_userdef_types.h 
b/source/blender/makesdna/DNA_userdef_types.h
index 23bd962760b..228812cd243 100644
--- a/source/blender/makesdna/DNA_userdef_types.h
+++ b/source/blender/makesdna/DNA_userdef_types.h
@@ -872,7 +872,8 @@ typedef enum eUserpref_UI_Flag {
        USER_PLAINMENUS             = (1 << 5),
        USER_LOCK_CURSOR_ADJUST     = (1 << 6),
        USER_HEADER_BOTTOM          = (1 << 7),
-       USER_UIFLAG_DEPRECATED_8    = (1 << 8),  /* cleared */
+       /** Otherwise use header alignment from the file. */
+       USER_HEADER_FROM_PREF       = (1 << 8),
        USER_MENUOPENAUTO           = (1 << 9),
        USER_DEPTH_CURSOR           = (1 << 10),
        USER_AUTOPERSP              = (1 << 11),
diff --git a/source/blender/makesrna/intern/rna_userdef.c 
b/source/blender/makesrna/intern/rna_userdef.c
index 35e7c286471..b2536ba5cfa 100644
--- a/source/blender/makesrna/intern/rna_userdef.c
+++ b/source/blender/makesrna/intern/rna_userdef.c
@@ -101,6 +101,7 @@ static const EnumPropertyItem 
rna_enum_studio_light_type_items[] = {
 #include "BKE_mesh_runtime.h"
 #include "BKE_pbvh.h"
 #include "BKE_paint.h"
+#include "BKE_screen.h"
 
 #include "DEG_depsgraph.h"
 
@@ -152,6 +153,16 @@ static void rna_userdef_update_ui(Main *UNUSED(bmain), 
Scene *UNUSED(scene), Poi
        WM_main_add_notifier(NC_SCREEN | NA_EDITED, NULL);    /* refresh region 
sizes */
 }
 
+static void rna_userdef_update_ui_header_default(Main *bmain, Scene *scene, 
PointerRNA *ptr)
+{
+       if (U.uiflag & USER_HEADER_FROM_PREF) {
+               for (bScreen *screen = bmain->screen.first; screen; screen = 
screen->id.next) {
+                       BKE_screen_header_alignment_reset(screen);
+               }
+               rna_userdef_update_ui(bmain, scene, ptr);
+       }
+}
+
 static void rna_userdef_language_update(Main *UNUSED(bmain), Scene 
*UNUSED(scene), PointerRNA *UNUSED(ptr))
 {
        BLF_cache_clear();
@@ -3839,16 +3850,17 @@ static void rna_def_userdef_view(BlenderRNA *brna)
                                 "Otherwise menus, etc will always be top to 
bottom, left to right, "
                                 "no matter opening direction");
 
-       static const EnumPropertyItem header_align_default_items[] = {
-               {0, "TOP", 0, "Top", ""},
-               {USER_HEADER_BOTTOM, "BOTTOM", 0, "Bottom", ""},
+       static const EnumPropertyItem header_align_items[] = {
+               {0, "NONE", 0, "Default", "Keep existing header alignment"},
+               {USER_HEADER_FROM_PREF, "TOP", 0, "Top", "Top aligned on load"},
+               {USER_HEADER_FROM_PREF | USER_HEADER_BOTTOM, "BOTTOM", 0, 
"Bottom", "Bottom align on load (except for property editors)"},
                {0, NULL, 0, NULL, NULL},
        };
-       prop = RNA_def_property(srna, "header_align_default", PROP_ENUM, 
PROP_NONE);
-       RNA_def_property_enum_items(prop, header_align_default_items);
+       prop = RNA_def_property(srna, "header_align", PROP_ENUM, PROP_NONE);
+       RNA_def_property_enum_items(prop, header_align_items);
        RNA_def_property_enum_bitflag_sdna(prop, NULL, "uiflag");
        RNA_def_property_ui_text(prop, "Header Position", "Default header 
position for new space-types");
-       RNA_def_property_update(prop, 0, "rna_userdef_update");
+       RNA_def_property_update(prop, 0, 
"rna_userdef_update_ui_header_default");
 
        static const EnumPropertyItem text_hinting_items[] = {
                {0, "AUTO", 0, "Auto", ""},

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