layout: rethonk layouts from the ground up (#12890)

Rewrites layouts to be much smaller, and deal with much less annoying
BS. Improves the overall architecture, unifies handling of pseudotiling,
and various other improvements.

1 files changed, 52 insertions, 0 deletions

diff --git a/src/layout/algorithm/tiled/monocle/MonocleAlgorithm.hpp b/src/layout/algorithm/tiled/monocle/MonocleAlgorithm.hpp
new file mode 100644
index 00000000..e409b885
--- /dev/null
+++ b/src/layout/algorithm/tiled/monocle/MonocleAlgorithm.hpp
@@ -0,0 +1,52 @@
+#pragma once
+
+#include "../../TiledAlgorithm.hpp"
+#include "../../../../managers/HookSystemManager.hpp"
+
+#include <vector>
+
+namespace Layout::Tiled {
+
+    struct SMonocleTargetData {
+        SMonocleTargetData(SP<ITarget> t) : target(t) {
+            ;
+        }
+
+        WP<ITarget> target;
+        CBox        layoutBox;
+    };
+
+    class CMonocleAlgorithm : public ITiledAlgorithm {
+      public:
+        CMonocleAlgorithm();
+        virtual ~CMonocleAlgorithm();
+
+        virtual void                             newTarget(SP<ITarget> target);
+        virtual void                             movedTarget(SP<ITarget> target, std::optional<Vector2D> focalPoint = std::nullopt);
+        virtual void                             removeTarget(SP<ITarget> target);
+
+        virtual void                             resizeTarget(const Vector2D& Δ, SP<ITarget> target, eRectCorner corner = CORNER_NONE);
+        virtual void                             recalculate();
+
+        virtual SP<ITarget>                      getNextCandidate(SP<ITarget> old);
+
+        virtual std::expected<void, std::string> layoutMsg(const std::string_view& sv);
+        virtual std::optional<Vector2D>          predictSizeForNewTarget();
+
+        virtual void                             swapTargets(SP<ITarget> a, SP<ITarget> b);
+        virtual void                             moveTargetInDirection(SP<ITarget> t, Math::eDirection dir, bool silent);
+
+      private:
+        std::vector<SP<SMonocleTargetData>> m_targetDatas;
+        SP<HOOK_CALLBACK_FN>                m_focusCallback;
+
+        int                                 m_currentVisibleIndex = 0;
+
+        SP<SMonocleTargetData>              dataFor(SP<ITarget> t);
+        void                                cycleNext();
+        void                                cyclePrev();
+        void                                focusTargetUpdate(SP<ITarget> target);
+        void                                updateVisible();
+        SP<ITarget>                         getVisibleTarget();
+    };
+};