Add support for detecting clicks on every widget

Documentation/Reference/README.md

@@ -95,6 +95,7 @@
 -   [filedialog_on_save_cb(ptr_file_userData_)](methods/filedialog_on_save_cb(ptr_file_userData_).md)
 -   [listbox_on_select_row_cb(ptr_rowPtr_userData_)](methods/listbox_on_select_row_cb(ptr_rowPtr_userData_).md)
 -   [messagedialog_on_click_cb(ptr_response_userData_)](methods/messagedialog_on_click_cb(ptr_response_userData_).md)
+-   [on_click_cb(ptr_numberOfPress_xCoordinate_yCoordinate_userData_)](methods/on_click_cb(ptr_numberOfPress_xCoordinate_yCoordinate_userData_).md)
 -   [tabbutton_on_click_cb(ptr_userData_)](methods/tabbutton_on_click_cb(ptr_userData_).md)
 -   [taboverview_on_create_tab_cb(ptr_userData_)](methods/taboverview_on_create_tab_cb(ptr_userData_).md)
 -   [toast_on_click_cb(ptr_userData_)](methods/toast_on_click_cb(ptr_userData_).md)

Documentation/Reference/classes/NativeWidgetPeer.md

@@ -13,6 +13,10 @@ The widget's height.
 
 The widget's width.
 
+### `clickClosure`
+
+The closure that gets executed when the widget is being clicked.
+
 ## Methods
 ### `init()`
 
@@ -75,3 +79,9 @@ Add a style class to the widget.
 Enable or disable the widget.
 - Parameter sensitive: Whether the widget is enabled or disabled.
 - Returns: The widget.
+
+### `onClick(closure:)`
+
+Set a closure that is executed when the widget is being clicked.
+- Parameter closure: The closure.
+- Returns: The widget.

Documentation/Reference/methods/on_click_cb(ptr_numberOfPress_xCoordinate_yCoordinate_userData_).md

@@ -0,0 +1,9 @@
+### `on_click_cb(ptr:numberOfPress:xCoordinate:yCoordinate:userData:)`
+
+Run when the widget gets clicked.
+- Parameters:
+  - ptr: The pointer.
+  - numberOfPress: Number of press that is paired with this release.
+  - xCoordinate: The X coordinate.
+  - yCoordinate: The Y coordinate.
+  - userData: The widget data.

Sources/CGTUI/shim.h

@@ -26,6 +26,8 @@ filedialog_on_save_cb (void *, void *, void *);
 static void
 messagedialog_on_click_cb (void *, void *, void *);
 static void
+on_click_cb (void *, void *, void *, void *, void *);
+static void
 splitbutton_on_click_cb (void *, void *);
 static uint64_t
 taboverview_on_create_tab_cb (void *, void *);
@@ -2414,6 +2416,23 @@ gtui_set_sensitive (uint64_t widget, gboolean sensitive)
   gtk_widget_set_sensitive (widget, sensitive);
 }
 
+static void
+gtui_init_signals (uint64_t wdgt, uint64_t data)
+{
+  GtkWidget *widget;
+
+  g_assert_nonnull (wdgt);
+  g_assert_nonnull (data);
+  g_assert (GTK_IS_WIDGET (GTK_WIDGET ((void *)wdgt)));
+
+  widget = GTK_WIDGET (wdgt);
+  swift_retain (data);
+
+  GtkGestureClick *event_controller = gtk_gesture_click_new ();
+  gtk_widget_add_controller (widget, event_controller);
+  g_signal_connect (event_controller, "released", G_CALLBACK (on_click_cb), (void *)data);
+}
+
 static void
 gtui_label_set_text (uint64_t widget, const char *text)
 {

Sources/Libadwaita/GTK/NativeWidgetPeer.swift

@@ -16,6 +16,9 @@ open class NativeWidgetPeer: NativePeer {
     /// The widget's width.
     public var width: Int { .init(gtui_get_width(self.nativePtr)) }
 
+    /// The closure that gets executed when the widget is being clicked.
+    var clickClosure: () -> Void = { }
+
     /// Initialize a native widget peer.
     override public init() {
         super.init()
@@ -110,4 +113,33 @@ open class NativeWidgetPeer: NativePeer {
         gtui_set_sensitive(self.nativePtr, sensitive.cBool)
         return self
     }
+
+    /// Set a closure that is executed when the widget is being clicked.
+    /// - Parameter closure: The closure.
+    /// - Returns: The widget.
+    public func onClick(closure: @escaping () -> Void) -> NativeWidgetPeer {
+        clickClosure = closure
+        let selfAddr = unsafeBitCast(self, to: UInt64.self)
+        gtui_init_signals(self.nativePtr, selfAddr)
+        return self
+    }
+}
+
+/// Run when the widget gets clicked.
+/// - Parameters:
+///   - ptr: The pointer.
+///   - numberOfPress: Number of press that is paired with this release.
+///   - xCoordinate: The X coordinate.
+///   - yCoordinate: The Y coordinate.
+///   - userData: The widget data.
+@_cdecl("on_click_cb")
+func on_click_cb(
+    ptr: UnsafeMutableRawPointer,
+    numberOfPress: Int64,
+    xCoordinate: Double,
+    yCoordinate: Double,
+    userData: UnsafeMutableRawPointer
+) {
+    let widget = Unmanaged<NativeWidgetPeer>.fromOpaque(userData).takeUnretainedValue()
+    widget.clickClosure()
 }

Tests/main.swift

@@ -44,7 +44,9 @@ public class MyApplication: Application {
     func toastOverlay(win: Window) -> ToastOverlay {
         var toastOverlay = ToastOverlay(Label(""))
         let carousel = Carousel()
-            .append(StatusPage().title("Hello").description("Page 1").hexpand().frame(minHeight: 300))
+            .append(StatusPage().title("Hello").description("Page 1").hexpand().frame(minHeight: 300).onClick {
+                print("Click!")
+            })
             .append(StatusPage().title("World").description("Page 2").hexpand())
             .insert(Label("Inserted Page"), at: 0)
         let banner = Banner("Okay, so let's close the window.")