layout/algos: use binds:window_direction_monitor_fallback for moves (#13508)

ref https://github.com/hyprwm/Hyprland/discussions/13473

4 files changed, 25 insertions, 4 deletions

diff --git a/src/layout/algorithm/tiled/dwindle/DwindleAlgorithm.cpp b/src/layout/algorithm/tiled/dwindle/DwindleAlgorithm.cpp
index 1c8c43a7..17ddfe8a 100644
--- a/src/layout/algorithm/tiled/dwindle/DwindleAlgorithm.cpp
+++ b/src/layout/algorithm/tiled/dwindle/DwindleAlgorithm.cpp
@@ -549,6 +549,8 @@ std::optional<Vector2D> CDwindleAlgorithm::predictSizeForNewTarget() {
 }
 
 void CDwindleAlgorithm::moveTargetInDirection(SP<ITarget> t, Math::eDirection dir, bool silent) {
+    static auto    PMONITORFALLBACK = CConfigValue<Hyprlang::INT>("binds:window_direction_monitor_fallback");
+
     const auto     PNODE       = getNodeFromTarget(t);
     const Vector2D originalPos = t->position().middle();
 
@@ -557,12 +559,15 @@ void CDwindleAlgorithm::moveTargetInDirection(SP<ITarget> t, Math::eDirection di
 
     const auto FOCAL_POINT = focalPointForDir(t, dir);
 
+    const auto PMONITORFOCAL = g_pCompositor->getMonitorFromVector(FOCAL_POINT.value_or(t->position().middle()));
+
+    if (PMONITORFOCAL != m_parent->space()->workspace()->m_monitor && !*PMONITORFALLBACK)
+        return; // noop
+
     t->window()->setAnimationsToMove();
 
     removeTarget(t);
 
-    const auto PMONITORFOCAL = g_pCompositor->getMonitorFromVector(FOCAL_POINT.value_or(t->position().middle()));
-
     if (PMONITORFOCAL != m_parent->space()->workspace()->m_monitor) {
         // move with a focal point
 
diff --git a/src/layout/algorithm/tiled/master/MasterAlgorithm.cpp b/src/layout/algorithm/tiled/master/MasterAlgorithm.cpp
index 88540d20..f2914a46 100644
--- a/src/layout/algorithm/tiled/master/MasterAlgorithm.cpp
+++ b/src/layout/algorithm/tiled/master/MasterAlgorithm.cpp
@@ -403,7 +403,9 @@ void CMasterAlgorithm::swapTargets(SP<ITarget> a, SP<ITarget> b) {
 }
 
 void CMasterAlgorithm::moveTargetInDirection(SP<ITarget> t, Math::eDirection dir, bool silent) {
-    const auto PWINDOW2 = g_pCompositor->getWindowInDirection(t->window(), dir);
+    static auto PMONITORFALLBACK = CConfigValue<Hyprlang::INT>("binds:window_direction_monitor_fallback");
+
+    const auto  PWINDOW2 = g_pCompositor->getWindowInDirection(t->window(), dir);
 
     if (!t->window())
         return;
@@ -424,6 +426,9 @@ void CMasterAlgorithm::moveTargetInDirection(SP<ITarget> t, Math::eDirection dir
     t->window()->setAnimationsToMove();
 
     if (t->window()->m_workspace != targetWs) {
+        if (!*PMONITORFALLBACK)
+            return; // noop
+
         t->assignToSpace(targetWs->m_space, focalPointForDir(t, dir));
     } else if (PWINDOW2) {
         // if same monitor, switch windows
diff --git a/src/layout/algorithm/tiled/monocle/MonocleAlgorithm.cpp b/src/layout/algorithm/tiled/monocle/MonocleAlgorithm.cpp
index 3551b370..fe92f27c 100644
--- a/src/layout/algorithm/tiled/monocle/MonocleAlgorithm.cpp
+++ b/src/layout/algorithm/tiled/monocle/MonocleAlgorithm.cpp
@@ -202,6 +202,11 @@ void CMonocleAlgorithm::swapTargets(SP<ITarget> a, SP<ITarget> b) {
 }
 
 void CMonocleAlgorithm::moveTargetInDirection(SP<ITarget> t, Math::eDirection dir, bool silent) {
+    static auto PMONITORFALLBACK = CConfigValue<Hyprlang::INT>("binds:window_direction_monitor_fallback");
+
+    if (!*PMONITORFALLBACK)
+        return; // noop
+
     // try to find a monitor in the specified direction, thats the logical thing
     if (!t || !t->space() || !t->space()->workspace())
         return;
diff --git a/src/layout/algorithm/tiled/scrolling/ScrollingAlgorithm.cpp b/src/layout/algorithm/tiled/scrolling/ScrollingAlgorithm.cpp
index 3b5dca4a..0c3bb1cc 100644
--- a/src/layout/algorithm/tiled/scrolling/ScrollingAlgorithm.cpp
+++ b/src/layout/algorithm/tiled/scrolling/ScrollingAlgorithm.cpp
@@ -848,7 +848,9 @@ void CScrollingAlgorithm::moveTargetInDirection(SP<ITarget> t, Math::eDirection
 }
 
 void CScrollingAlgorithm::moveTargetTo(SP<ITarget> t, Math::eDirection dir, bool silent) {
-    const auto DATA = dataFor(t);
+    static auto PMONITORFALLBACK = CConfigValue<Hyprlang::INT>("binds:window_direction_monitor_fallback");
+
+    const auto  DATA = dataFor(t);
 
     if (!DATA)
         return;
@@ -953,6 +955,10 @@ void CScrollingAlgorithm::moveTargetTo(SP<ITarget> t, Math::eDirection dir, bool
     if (!commenceDir()) {
         // dir wasn't commenced, move to a workspace if possible
         // with the original dir
+
+        if (!*PMONITORFALLBACK)
+            return; // noop
+
         const auto MONINDIR = g_pCompositor->getMonitorInDirection(m_parent->space()->workspace()->m_monitor.lock(), dir);
         if (MONINDIR && MONINDIR != m_parent->space()->workspace()->m_monitor && MONINDIR->m_activeWorkspace) {
             t->assignToSpace(MONINDIR->m_activeWorkspace->m_space, focalPointForDir(t, dir));