From d4c9a2fb36f44576db2dee76613525623d8b5b06 Mon Sep 17 00:00:00 2001
From: David Czekalla <davidczekalla@pop-os.fritz.box>
Date: Fri, 6 Sep 2024 00:38:54 +0200
Subject: [PATCH] Add "Reset Symmetry to View Center" option (fix #4638, #4640)

Added an option in the ContextBar to reset the symmetry options to the
current view center.
---
 data/strings/en.ini        |  3 ++-
 src/app/ui/context_bar.cpp | 22 ++++++++++++++++++----
 2 files changed, 20 insertions(+), 5 deletions(-)

diff --git a/data/strings/en.ini b/data/strings/en.ini
index 320f08290..1156bb282 100644
--- a/data/strings/en.ini
+++ b/data/strings/en.ini
@@ -1857,4 +1857,5 @@ toggle = Toggle Symmetry
 toggle_horizontal = Toggle Horizontal Symmetry
 toggle_vertical = Toggle Vertical Symmetry
 show_options = Symmetry Options
-reset_position = Reset Symmetry to Center
+reset_position_to_center = Reset Symmetry to Center
+reset_position_to_view_center = Reset Symmetry to View Center
diff --git a/src/app/ui/context_bar.cpp b/src/app/ui/context_bar.cpp
index 82eae972f..346d11708 100644
--- a/src/app/ui/context_bar.cpp
+++ b/src/app/ui/context_bar.cpp
@@ -1575,11 +1575,13 @@ private:
       item->setSelected(false);
 
       Menu menu;
-      MenuItem
-        reset(Strings::symmetry_reset_position());
-      menu.addChild(&reset);
+      MenuItem resetToCenter(Strings::symmetry_reset_position_to_center());
+      MenuItem resetToViewCenter(Strings::symmetry_reset_position_to_view_center());
 
-      reset.Click.connect(
+      menu.addChild(&resetToCenter);
+      menu.addChild(&resetToViewCenter);
+
+      resetToCenter.Click.connect(
         [doc, &docPref]{
           docPref.symmetry.xAxis(doc->sprite()->width()/2.0);
           docPref.symmetry.yAxis(doc->sprite()->height()/2.0);
@@ -1587,6 +1589,18 @@ private:
           doc->notifyGeneralUpdate();
         });
 
+      resetToViewCenter.Click.connect(
+        [doc, &docPref]{
+          auto* editor = Editor::activeEditor();
+          const gfx::Rect& bounds = editor->getViewportBounds();
+          double xViewPosition = bounds.x + bounds.w/2.0;
+          double yViewPosition = bounds.y + bounds.h/2.0;
+          docPref.symmetry.xAxis(xViewPosition);
+          docPref.symmetry.yAxis(yViewPosition);
+          // Redraw symmetry rules
+          doc->notifyGeneralUpdate();
+        });
+
       menu.showPopup(gfx::Point(bounds.x, bounds.y2()),
                      display());
     }