Add support for smart splitting (#2676)

* Add support for smart splitting

* clang-format

* smart_split default to 0, and make smart_split behave like preserve_split

1 files changed, 27 insertions, 2 deletions

diff --git a/src/layout/DwindleLayout.cpp b/src/layout/DwindleLayout.cpp
index dda9a53f..adf597ff 100644
--- a/src/layout/DwindleLayout.cpp
+++ b/src/layout/DwindleLayout.cpp
@@ -6,10 +6,11 @@ void SDwindleNodeData::recalcSizePosRecursive(bool force, bool horizontalOverrid
 
         const auto         REVERSESPLITRATIO = 2.f - splitRatio;
 
+        static auto* const PSMARTSPLIT    = &g_pConfigManager->getConfigValuePtr("dwindle:smart_split")->intValue;
         static auto* const PPRESERVESPLIT = &g_pConfigManager->getConfigValuePtr("dwindle:preserve_split")->intValue;
         static auto* const PFLMULT        = &g_pConfigManager->getConfigValuePtr("dwindle:split_width_multiplier")->floatValue;
 
-        if (*PPRESERVESPLIT == 0) {
+        if (*PPRESERVESPLIT == 0 && *PSMARTSPLIT == 0) {
             splitTop = size.y * *PFLMULT > size.x;
         }
 
@@ -363,6 +364,7 @@ void CHyprDwindleLayout::onWindowCreatedTiling(CWindow* pWindow) {
 
     static auto* const PFORCESPLIT                = &g_pConfigManager->getConfigValuePtr("dwindle:force_split")->intValue;
     static auto* const PERMANENTDIRECTIONOVERRIDE = &g_pConfigManager->getConfigValuePtr("dwindle:permanent_direction_override")->intValue;
+    static auto* const PSMARTSPLIT                = &g_pConfigManager->getConfigValuePtr("dwindle:smart_split")->intValue;
 
     bool               horizontalOverride = false;
     bool               verticalOverride   = false;
@@ -388,7 +390,30 @@ void CHyprDwindleLayout::onWindowCreatedTiling(CWindow* pWindow) {
         // whether or not the override persists after opening one window
         if (*PERMANENTDIRECTIONOVERRIDE == 0)
             overrideDirection = OneTimeFocus::NOFOCUS;
-
+    } else if (*PSMARTSPLIT == 1) {
+        const auto tl = NEWPARENT->position;
+        const auto tr = NEWPARENT->position + Vector2D(NEWPARENT->size.x, 0);
+        const auto bl = NEWPARENT->position + Vector2D(0, NEWPARENT->size.y);
+        const auto br = NEWPARENT->position + NEWPARENT->size;
+        const auto cc = NEWPARENT->position + NEWPARENT->size / 2;
+
+        if (MOUSECOORDS.inTriangle(tl, tr, cc)) {
+            NEWPARENT->splitTop    = true;
+            NEWPARENT->children[0] = PNODE;
+            NEWPARENT->children[1] = OPENINGON;
+        } else if (MOUSECOORDS.inTriangle(tr, cc, br)) {
+            NEWPARENT->splitTop    = false;
+            NEWPARENT->children[0] = OPENINGON;
+            NEWPARENT->children[1] = PNODE;
+        } else if (MOUSECOORDS.inTriangle(br, bl, cc)) {
+            NEWPARENT->splitTop    = true;
+            NEWPARENT->children[0] = OPENINGON;
+            NEWPARENT->children[1] = PNODE;
+        } else {
+            NEWPARENT->splitTop    = false;
+            NEWPARENT->children[0] = PNODE;
+            NEWPARENT->children[1] = OPENINGON;
+        }
     } else if (*PFORCESPLIT == 0 || !pWindow->m_bFirstMap) {
         if ((SIDEBYSIDE &&
              VECINRECT(MOUSECOORDS, NEWPARENT->position.x, NEWPARENT->position.y / *PWIDTHMULTIPLIER, NEWPARENT->position.x + NEWPARENT->size.x / 2.f,