Implement Workspace scroll

Scrolling the workspace widgets now scroll through the workspaces. The
exact behaviour is governed by
'WorkspaceScrollOnMonitor'(either 'm[+/-]1' or 'e[+/-]1'). The direction
can be inverted with 'WorkspaceScrollInvert'.

For the ping: https://github.com/scorpion-26/gBar/issues/5

data/config

@@ -28,6 +28,12 @@ BatteryFolder: /sys/class/power_supply/BAT1
 # The default symbol for the workspaces
 DefaultWorkspaceSymbol: 
 
+# Scroll through the workspaces of the current monitor instead of all workspaces
+WorkspaceScrollOnMonitor: true
+
+# When true: Scroll up -> Next workspace instead of previous workspace. Analogous with scroll down
+WorkspaceScrollInvert: false
+
 # Forces the time to be centered.
 # This can cause issues, if there is not enough space on screen (e.g. when opening the text)
 CenterTime: true

src/Bar.cpp

@@ -196,6 +196,26 @@ namespace Bar
             }
             return TimerResult::Ok;
         }
+
+        void ScrollWorkspaces(EventBox&, ScrollDirection direction)
+        {
+            switch (direction)
+            {
+            case ScrollDirection::Up:
+                if (Config::Get().workspaceScrollInvert)
+                    System::GotoNextWorkspace('+');
+                else
+                    System::GotoNextWorkspace('-');
+                break;
+            case ScrollDirection::Down:
+                if (Config::Get().workspaceScrollInvert)
+                    System::GotoNextWorkspace('-');
+                else
+                    System::GotoNextWorkspace('+');
+                break;
+            default: break;
+            }
+        }
 #endif
     }
 
@@ -473,26 +493,30 @@ namespace Bar
         auto margin = Widget::Create<Box>();
         margin->SetHorizontalTransform({12, true, Alignment::Left});
         parent.AddChild(std::move(margin));
-
-        auto box = Widget::Create<Box>();
-        box->SetSpacing({8, true});
-        box->SetHorizontalTransform({-1, true, Alignment::Left});
+        auto eventBox = Widget::Create<EventBox>();
+        eventBox->SetScrollFn(DynCtx::ScrollWorkspaces);
         {
-            for (size_t i = 0; i < DynCtx::workspaces.size(); i++)
+            auto box = Widget::Create<Box>();
+            box->SetSpacing({8, true});
+            box->SetHorizontalTransform({-1, true, Alignment::Left});
             {
-                auto workspace = Widget::Create<Button>();
-                workspace->SetHorizontalTransform({8, false, Alignment::Fill});
-                workspace->OnClick(
-                    [i](Button&)
-                    {
-                        System::GotoWorkspace((uint32_t)i + 1);
-                    });
-                DynCtx::workspaces[i] = workspace.get();
-                box->AddChild(std::move(workspace));
+                for (size_t i = 0; i < DynCtx::workspaces.size(); i++)
+                {
+                    auto workspace = Widget::Create<Button>();
+                    workspace->SetHorizontalTransform({8, false, Alignment::Fill});
+                    workspace->OnClick(
+                        [i](Button&)
+                        {
+                            System::GotoWorkspace((uint32_t)i + 1);
+                        });
+                    DynCtx::workspaces[i] = workspace.get();
+                    box->AddChild(std::move(workspace));
+                }
             }
+            box->AddTimer<Box>(DynCtx::UpdateWorkspaces, DynCtx::updateTimeFast);
+            eventBox->AddChild(std::move(box));
         }
-        box->AddTimer<Box>(DynCtx::UpdateWorkspaces, DynCtx::updateTimeFast);
-        parent.AddChild(std::move(box));
+        parent.AddChild(std::move(eventBox));
     }
 #endif
 

src/Config.cpp

@@ -134,6 +134,8 @@ void Config::Load()
         AddConfigVar("CenterTime", config.centerTime, lineView, foundProperty);
         AddConfigVar("AudioRevealer", config.audioRevealer, lineView, foundProperty);
         AddConfigVar("NetworkWidget", config.networkWidget, lineView, foundProperty);
+        AddConfigVar("WorkspaceScrollOnMonitor", config.workspaceScrollOnMonitor, lineView, foundProperty);
+        AddConfigVar("WorkspaceScrollInvert", config.workspaceScrollInvert, lineView, foundProperty);
 
         AddConfigVar("MinUploadBytes", config.minUploadBytes, lineView, foundProperty);
         AddConfigVar("MaxUploadBytes", config.maxUploadBytes, lineView, foundProperty);

src/Config.h

@@ -17,6 +17,8 @@ public:
     bool centerTime = true;
     bool audioRevealer = false;
     bool networkWidget = true;
+    bool workspaceScrollOnMonitor = true; // Scroll through workspaces on monitor instead of all
+    bool workspaceScrollInvert = false; // Up = +1, instead of Up = -1
 
     // Controls for color progression of the network widget
     uint32_t minUploadBytes = 0;                  // Bottom limit of the network widgets upload. Everything below it is considered "under"

src/Hyprland.h

@@ -115,5 +115,17 @@ namespace Hyprland
 
         system(("hyprctl dispatch workspace " + std::to_string(workspace)).c_str());
     }
+
+    // direction: + or -
+    inline void GotoNext(char direction)
+    {
+        char scrollOp = 'e';
+        if (Config::Get().workspaceScrollOnMonitor)
+        {
+            scrollOp = 'm';
+        }
+        std::string cmd = std::string("hyprctl dispatch workspace ") + scrollOp + direction + "1";
+        system(cmd.c_str());
+    }
 }
 #endif

src/System.cpp

@@ -446,6 +446,10 @@ namespace System
     {
         return Hyprland::Goto(workspace);
     }
+    void GotoNextWorkspace(char direction)
+    {
+        return Hyprland::GotoNext(direction);
+    }
     std::string GetWorkspaceSymbol(int index)
     {
         if (index < 0 || index > 9)

src/System.h

@@ -90,6 +90,8 @@ namespace System
     };
     WorkspaceStatus GetWorkspaceStatus(uint32_t monitor, uint32_t workspace);
     void GotoWorkspace(uint32_t workspace);
+    // direction: + or -
+    void GotoNextWorkspace(char direction);
     std::string GetWorkspaceSymbol(int index);
 #endif