From 723870337f299d4c80aa0048144f3a1ca1c885bd Mon Sep 17 00:00:00 2001
From: Vaxry <43317083+vaxerski@users.noreply.github.com>
Date: Sat, 21 Feb 2026 21:30:39 +0000
Subject: 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.
---
 src/layout/space/Space.cpp | 185 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 185 insertions(+)
 create mode 100644 src/layout/space/Space.cpp

(limited to 'src/layout/space/Space.cpp')

diff --git a/src/layout/space/Space.cpp b/src/layout/space/Space.cpp
new file mode 100644
index 00000000..742c398a
--- /dev/null
+++ b/src/layout/space/Space.cpp
@@ -0,0 +1,185 @@
+#include "Space.hpp"
+
+#include "../target/Target.hpp"
+#include "../algorithm/Algorithm.hpp"
+
+#include "../../debug/log/Logger.hpp"
+#include "../../desktop/Workspace.hpp"
+#include "../../config/ConfigManager.hpp"
+
+using namespace Layout;
+
+SP<CSpace> CSpace::create(PHLWORKSPACE w) {
+    auto space    = SP<CSpace>(new CSpace(w));
+    space->m_self = space;
+    return space;
+}
+
+CSpace::CSpace(PHLWORKSPACE parent) : m_parent(parent) {
+    recheckWorkArea();
+}
+
+void CSpace::add(SP<ITarget> t) {
+    m_targets.emplace_back(t);
+
+    recheckWorkArea();
+
+    if (m_algorithm)
+        m_algorithm->addTarget(t);
+
+    m_parent->updateWindows();
+}
+
+void CSpace::move(SP<ITarget> t, std::optional<Vector2D> focalPoint) {
+    m_targets.emplace_back(t);
+
+    recheckWorkArea();
+
+    if (m_algorithm)
+        m_algorithm->moveTarget(t, focalPoint);
+
+    m_parent->updateWindows();
+}
+
+void CSpace::remove(SP<ITarget> t) {
+    std::erase_if(m_targets, [&t](const auto& e) { return !e || e == t; });
+
+    recheckWorkArea();
+
+    if (m_algorithm)
+        m_algorithm->removeTarget(t);
+
+    if (m_parent) // can be null if the workspace is gone
+        m_parent->updateWindows();
+}
+
+void CSpace::setAlgorithmProvider(SP<CAlgorithm> algo) {
+    m_algorithm = algo;
+}
+
+void CSpace::recheckWorkArea() {
+    if (!m_parent || !m_parent->m_monitor) {
+        Log::logger->log(Log::ERR, "CSpace: recheckWorkArea on no parent / mon?!");
+        return;
+    }
+
+    const auto  WORKSPACERULE = g_pConfigManager->getWorkspaceRuleFor(m_parent.lock());
+
+    auto        workArea = m_parent->m_monitor->logicalBoxMinusReserved();
+
+    static auto PGAPSOUTDATA   = CConfigValue<Hyprlang::CUSTOMTYPE>("general:gaps_out");
+    static auto PFLOATGAPSDATA = CConfigValue<Hyprlang::CUSTOMTYPE>("general:float_gaps");
+    auto* const PGAPSOUT       = sc<CCssGapData*>((PGAPSOUTDATA.ptr())->getData());
+    auto*       PFLOATGAPS     = sc<CCssGapData*>(PFLOATGAPSDATA.ptr()->getData());
+    if (PFLOATGAPS->m_bottom < 0 || PFLOATGAPS->m_left < 0 || PFLOATGAPS->m_right < 0 || PFLOATGAPS->m_top < 0)
+        PFLOATGAPS = PGAPSOUT;
+
+    auto                   gapsOut   = WORKSPACERULE.gapsOut.value_or(*PGAPSOUT);
+    auto                   gapsFloat = WORKSPACERULE.gapsOut.value_or(*PFLOATGAPS);
+
+    Desktop::CReservedArea reservedGaps{gapsOut.m_top, gapsOut.m_right, gapsOut.m_bottom, gapsOut.m_left};
+    Desktop::CReservedArea reservedFloatGaps{gapsFloat.m_top, gapsFloat.m_right, gapsFloat.m_bottom, gapsFloat.m_left};
+
+    auto                   floatWorkArea = workArea;
+
+    reservedFloatGaps.applyip(floatWorkArea);
+    reservedGaps.applyip(workArea);
+
+    m_workArea         = workArea;
+    m_floatingWorkArea = floatWorkArea;
+}
+
+const CBox& CSpace::workArea(bool floating) const {
+    return floating ? m_floatingWorkArea : m_workArea;
+}
+
+PHLWORKSPACE CSpace::workspace() const {
+    return m_parent.lock();
+}
+
+void CSpace::toggleTargetFloating(SP<ITarget> t) {
+    t->setWasTiling(true);
+    m_algorithm->setFloating(t, !t->floating());
+    t->setWasTiling(false);
+
+    m_parent->updateWindows();
+
+    recalculate();
+}
+
+CBox CSpace::targetPositionLocal(SP<ITarget> t) const {
+    return t->position().translate(-m_workArea.pos());
+}
+
+void CSpace::resizeTarget(const Vector2D& Δ, SP<ITarget> target, eRectCorner corner) {
+    if (!m_algorithm)
+        return;
+
+    m_algorithm->resizeTarget(Δ, target, corner);
+}
+
+void CSpace::moveTarget(const Vector2D& Δ, SP<ITarget> target) {
+    if (!m_algorithm)
+        return;
+
+    m_algorithm->moveTarget(Δ, target);
+}
+
+SP<CAlgorithm> CSpace::algorithm() const {
+    return m_algorithm;
+}
+
+void CSpace::recalculate() {
+    recheckWorkArea();
+
+    if (m_algorithm)
+        m_algorithm->recalculate();
+}
+
+void CSpace::setFullscreen(SP<ITarget> t, eFullscreenMode mode) {
+    t->setFullscreenMode(mode);
+
+    if (mode == FSMODE_NONE && m_algorithm && t->floating())
+        m_algorithm->recenter(t);
+
+    recalculate();
+}
+
+std::expected<void, std::string> CSpace::layoutMsg(const std::string_view& sv) {
+    if (m_algorithm)
+        return m_algorithm->layoutMsg(sv);
+
+    return {};
+}
+
+std::optional<Vector2D> CSpace::predictSizeForNewTiledTarget() {
+    if (m_algorithm)
+        return m_algorithm->predictSizeForNewTiledTarget();
+
+    return std::nullopt;
+}
+
+void CSpace::swap(SP<ITarget> a, SP<ITarget> b) {
+    for (auto& t : m_targets) {
+        if (t == a)
+            t = b;
+        else if (t == b)
+            t = a;
+    }
+
+    if (m_algorithm)
+        m_algorithm->swapTargets(a, b);
+}
+
+void CSpace::moveTargetInDirection(SP<ITarget> t, Math::eDirection dir, bool silent) {
+    if (m_algorithm)
+        m_algorithm->moveTargetInDirection(t, dir, silent);
+}
+
+SP<ITarget> CSpace::getNextCandidate(SP<ITarget> old) {
+    return !m_algorithm ? nullptr : m_algorithm->getNextCandidate(old);
+}
+
+const std::vector<WP<ITarget>>& CSpace::targets() const {
+    return m_targets;
+}
-- 
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