desktop/windowRule: allow expression in min_size/max_size (#12977)

hyprtester/src/tests/main/hyprctl.cpp

@@ -77,6 +77,16 @@ static bool testGetprop() {
     EXPECT(getCommandStdOut("hyprctl getprop class:kitty min_size"), "100 50");
     EXPECT(getCommandStdOut("hyprctl getprop class:kitty min_size -j"), R"({"min_size": [100,50]})");
 
+    // expr-based min/max _size
+    getFromSocket("/dispatch setfloating class:kitty");                 // need to set floating for tests below
+    getFromSocket("/dispatch setprop class:kitty max_size 90+10 25*2"); // set max to the same as min above, forcing window to 100*50
+    EXPECT(getCommandStdOut("hyprctl getprop class:kitty max_size"), "100 50");
+    EXPECT(getCommandStdOut("hyprctl getprop class:kitty max_size -j"), R"({"max_size": [100,50]})");
+    getFromSocket("/dispatch setprop class:kitty min_size window_w*0.5 window_h-10");
+    EXPECT(getCommandStdOut("hyprctl getprop class:kitty min_size"), "50 40");
+    EXPECT(getCommandStdOut("hyprctl getprop class:kitty min_size -j"), R"({"min_size": [50,40]})");
+    getFromSocket("/dispatch settiled class:kitty"); // go back to tiled for consistency
+
     // opacity
     EXPECT(getCommandStdOut("hyprctl getprop class:kitty opacity"), "1");
     EXPECT(getCommandStdOut("hyprctl getprop class:kitty opacity -j"), R"({"opacity": 1})");

hyprtester/src/tests/main/window.cpp

@@ -970,7 +970,8 @@ static bool test() {
     Tests::killAllWindows();
 
     // test expression rules
-    OK(getFromSocket("/keyword windowrule match:class expr_kitty, float yes, size monitor_w*0.5 monitor_h*0.5, move 20+(monitor_w*0.1) monitor_h*0.5"));
+    OK(getFromSocket("/keyword windowrule match:class expr_kitty, float yes, size monitor_w*0.5 monitor_h*0.5, min_size monitor_w*0.25 monitor_h*0.25, "
+                     "max_size monitor_w*0.75 monitor_h*0.75, move 20+(monitor_w*0.1) monitor_h*0.5"));
 
     if (!spawnKitty("expr_kitty"))
         return false;
@@ -980,6 +981,14 @@ static bool test() {
         EXPECT_CONTAINS(str, "floating: 1");
         EXPECT_CONTAINS(str, "at: 212,540");
         EXPECT_CONTAINS(str, "size: 960,540");
+
+        auto min = getFromSocket("/getprop active min_size");
+        EXPECT_CONTAINS(min, "480");
+        EXPECT_CONTAINS(min, "270");
+
+        auto max = getFromSocket("/getprop active max_size");
+        EXPECT_CONTAINS(max, "1440");
+        EXPECT_CONTAINS(max, "810");
     }
 
     OK(getFromSocket("/reload"));

src/desktop/rule/windowRule/WindowRuleApplicator.cpp

@@ -265,13 +265,17 @@ CWindowRuleApplicator::SRuleResult CWindowRuleApplicator::applyDynamicRule(const
                     if (!m_window)
                         break;
 
-                    const auto VEC = configStringToVector2D(effect);
+                    const auto VEC = m_window->calculateExpression(effect);
-                    if (VEC.x < 1 || VEC.y < 1) {
+                    if (!VEC) {
+                        Log::logger->log(Log::ERR, "failed to parse {} as an expression", effect);
+                        break;
+                    }
+                    if (VEC->x < 1 || VEC->y < 1) {
                         Log::logger->log(Log::ERR, "Invalid size for maxsize");
                         break;
                     }
 
-                    m_maxSize.first = Types::COverridableVar(VEC, Types::PRIORITY_WINDOW_RULE);
+                    m_maxSize.first = Types::COverridableVar(*VEC, Types::PRIORITY_WINDOW_RULE);
 
                     if (*PCLAMP_TILED || m_window->m_isFloating)
                         m_window->clampWindowSize(std::nullopt, m_maxSize.first.value());
@@ -286,13 +290,18 @@ CWindowRuleApplicator::SRuleResult CWindowRuleApplicator::applyDynamicRule(const
                     if (!m_window)
                         break;
 
-                    const auto VEC = configStringToVector2D(effect);
+                    const auto VEC = m_window->calculateExpression(effect);
-                    if (VEC.x < 1 || VEC.y < 1) {
+                    if (!VEC) {
+                        Log::logger->log(Log::ERR, "failed to parse {} as an expression", effect);
+                        break;
+                    }
+
+                    if (VEC->x < 1 || VEC->y < 1) {
                         Log::logger->log(Log::ERR, "Invalid size for maxsize");
                         break;
                     }
 
-                    m_minSize.first = Types::COverridableVar(VEC, Types::PRIORITY_WINDOW_RULE);
+                    m_minSize.first = Types::COverridableVar(*VEC, Types::PRIORITY_WINDOW_RULE);
                     if (*PCLAMP_TILED || m_window->m_isFloating)
                         m_window->clampWindowSize(m_minSize.first.value(), std::nullopt);
                 } catch (std::exception& e) { Log::logger->log(Log::ERR, "minsize rule \"{}\" failed with: {}", effect, e.what()); }

src/managers/KeybindManager.cpp

@@ -3164,12 +3164,22 @@ SDispatchResult CKeybindManager::setProp(std::string args) {
 
     try {
         if (PROP == "max_size") {
-            PWINDOW->m_ruleApplicator->maxSizeOverride(Desktop::Types::COverridableVar(configStringToVector2D(VAL), Desktop::Types::PRIORITY_SET_PROP));
+            const auto SIZE = PWINDOW->calculateExpression(VAL);
+            if (!SIZE) {
+                Log::logger->log(Log::ERR, "failed to parse {} as an expression", VAL);
+                throw "failed to parse expression";
+            }
+            PWINDOW->m_ruleApplicator->maxSizeOverride(Desktop::Types::COverridableVar(*SIZE, Desktop::Types::PRIORITY_SET_PROP));
             PWINDOW->clampWindowSize(std::nullopt, PWINDOW->m_ruleApplicator->maxSize().value());
             PWINDOW->setHidden(false);
         } else if (PROP == "min_size") {
-            PWINDOW->m_ruleApplicator->minSizeOverride(Desktop::Types::COverridableVar(configStringToVector2D(VAL), Desktop::Types::PRIORITY_SET_PROP));
+            const auto SIZE = PWINDOW->calculateExpression(VAL);
-            PWINDOW->clampWindowSize(std::nullopt, PWINDOW->m_ruleApplicator->minSize().value());
+            if (!SIZE) {
+                Log::logger->log(Log::ERR, "failed to parse {} as an expression", VAL);
+                throw "failed to parse expression";
+            }
+            PWINDOW->m_ruleApplicator->minSizeOverride(Desktop::Types::COverridableVar(*SIZE, Desktop::Types::PRIORITY_SET_PROP));
+            PWINDOW->clampWindowSize(PWINDOW->m_ruleApplicator->minSize().value(), std::nullopt);
             PWINDOW->setHidden(false);
         } else if (PROP == "active_border_color" || PROP == "inactive_border_color") {
             CGradientValueData colorData = {};