WindowServer: Add API to change virtual desktop settings

This also adds the ability to query how many virtual desktops are
set up, and for the Taskbar to be notified when the active virtual
desktop has changed.

1 files changed, 25 insertions, 1 deletions

diff --git a/Userland/Libraries/LibGUI/Event.h b/Userland/Libraries/LibGUI/Event.h
index 92035a8d05..446e020beb 100644
--- a/Userland/Libraries/LibGUI/Event.h
+++ b/Userland/Libraries/LibGUI/Event.h
@@ -64,6 +64,7 @@ public:
         WM_AppletAreaSizeChanged,
         WM_SuperKeyPressed,
         WM_SuperSpaceKeyPressed,
+        WM_VirtualDesktopChanged,
         __End_WM_Events,
     };
 
@@ -135,13 +136,15 @@ public:
 
 class WMWindowStateChangedEvent : public WMEvent {
 public:
-    WMWindowStateChangedEvent(int client_id, int window_id, int parent_client_id, int parent_window_id, const StringView& title, const Gfx::IntRect& rect, bool is_active, bool is_modal, WindowType window_type, bool is_minimized, bool is_frameless, Optional<int> progress)
+    WMWindowStateChangedEvent(int client_id, int window_id, int parent_client_id, int parent_window_id, const StringView& title, const Gfx::IntRect& rect, unsigned virtual_desktop_row, unsigned virtual_desktop_column, bool is_active, bool is_modal, WindowType window_type, bool is_minimized, bool is_frameless, Optional<int> progress)
         : WMEvent(Event::Type::WM_WindowStateChanged, client_id, window_id)
         , m_parent_client_id(parent_client_id)
         , m_parent_window_id(parent_window_id)
         , m_title(title)
         , m_rect(rect)
         , m_window_type(window_type)
+        , m_virtual_desktop_row(virtual_desktop_row)
+        , m_virtual_desktop_column(virtual_desktop_column)
         , m_active(is_active)
         , m_modal(is_modal)
         , m_minimized(is_minimized)
@@ -160,6 +163,8 @@ public:
     bool is_minimized() const { return m_minimized; }
     bool is_frameless() const { return m_frameless; }
     Optional<int> progress() const { return m_progress; }
+    unsigned virtual_desktop_row() const { return m_virtual_desktop_row; }
+    unsigned virtual_desktop_column() const { return m_virtual_desktop_column; }
 
 private:
     int m_parent_client_id;
@@ -167,6 +172,8 @@ private:
     String m_title;
     Gfx::IntRect m_rect;
     WindowType m_window_type;
+    unsigned m_virtual_desktop_row;
+    unsigned m_virtual_desktop_column;
     bool m_active;
     bool m_modal;
     bool m_minimized;
@@ -202,6 +209,23 @@ private:
     RefPtr<Gfx::Bitmap> m_bitmap;
 };
 
+class WMVirtualDesktopChangedEvent : public WMEvent {
+public:
+    explicit WMVirtualDesktopChangedEvent(int client_id, unsigned current_row, unsigned current_column)
+        : WMEvent(Event::Type::WM_VirtualDesktopChanged, client_id, 0)
+        , m_current_row(current_row)
+        , m_current_column(current_column)
+    {
+    }
+
+    unsigned current_row() const { return m_current_row; }
+    unsigned current_column() const { return m_current_column; }
+
+private:
+    const unsigned m_current_row;
+    const unsigned m_current_column;
+};
+
 class MultiPaintEvent final : public Event {
 public:
     explicit MultiPaintEvent(const Vector<Gfx::IntRect, 32>& rects, const Gfx::IntSize& window_size)