1 files changed, 99 insertions, 0 deletions
diff --git a/lib/astal/gtk3/src/widget/button.vala b/lib/astal/gtk3/src/widget/button.vala
new file mode 100644
index 0000000..bc10577
--- /dev/null
+++ b/lib/astal/gtk3/src/widget/button.vala
@@ -0,0 +1,99 @@
+public class Astal.Button : Gtk.Button {
+    public signal void hover (HoverEvent event);
+    public signal void hover_lost (HoverEvent event);
+    public signal void click (ClickEvent event);
+    public signal void click_release (ClickEvent event);
+    public signal void scroll (ScrollEvent event);
+
+    construct {
+        add_events(Gdk.EventMask.SCROLL_MASK);
+        add_events(Gdk.EventMask.SMOOTH_SCROLL_MASK);
+
+        enter_notify_event.connect((self, event) => {
+            hover(HoverEvent(event) { lost = false });
+        });
+
+        leave_notify_event.connect((self, event) => {
+            hover_lost(HoverEvent(event) { lost = true });
+        });
+
+        button_press_event.connect((event) => {
+            click(ClickEvent(event) { release = false });
+        });
+
+        button_release_event.connect((event) => {
+            click_release(ClickEvent(event) { release = true });
+        });
+
+        scroll_event.connect((event) => {
+            scroll(ScrollEvent(event));
+        });
+    }
+}
+
+public enum Astal.MouseButton {
+    PRIMARY = 1,
+    MIDDLE = 2,
+    SECONDARY = 3,
+    BACK = 4,
+    FORWARD = 5,
+}
+
+// these structs are here because gjs converts every event
+// into a union Gdk.Event, which cannot be destructured
+// and are not as convinent to work with as a struct
+public struct Astal.ClickEvent {
+    bool release;
+    uint time;
+    double x;
+    double y;
+    Gdk.ModifierType modifier;
+    MouseButton button;
+
+    public ClickEvent(Gdk.EventButton event) {
+        this.time = event.time;
+        this.x = event.x;
+        this.y = event.y;
+        this.button = (MouseButton)event.button;
+        this.modifier = event.state;
+    }
+}
+
+public struct Astal.HoverEvent {
+    bool lost;
+    uint time;
+    double x;
+    double y;
+    Gdk.ModifierType modifier;
+    Gdk.CrossingMode mode;
+    Gdk.NotifyType detail;
+
+    public HoverEvent(Gdk.EventCrossing event) {
+        this.time = event.time;
+        this.x = event.x;
+        this.y = event.y;
+        this.modifier = event.state;
+        this.mode = event.mode;
+        this.detail = event.detail;
+    }
+}
+
+public struct Astal.ScrollEvent {
+    uint time;
+    double x;
+    double y;
+    Gdk.ModifierType modifier;
+    Gdk.ScrollDirection direction;
+    double delta_x;
+    double delta_y;
+
+    public ScrollEvent(Gdk.EventScroll event) {
+        this.time = event.time;
+        this.x = event.x;
+        this.y = event.y;
+        this.modifier = event.state;
+        this.direction = event.direction;
+        this.delta_x = event.delta_x;
+        this.delta_y = event.delta_y;
+    }
+}