Merge branch 'main' into feat/cava

1 files changed, 94 insertions, 0 deletions

diff --git a/lib/astal/gtk3/src/widget/slider.vala b/lib/astal/gtk3/src/widget/slider.vala
new file mode 100644
index 0000000..97cfb69
--- /dev/null
+++ b/lib/astal/gtk3/src/widget/slider.vala
@@ -0,0 +1,94 @@
+/**
+ * Subclass of [[email protected]] which adds a signal and property for the drag state.
+ */
+public class Astal.Slider : Gtk.Scale {
+    /**
+     * Corresponds to [[email protected] :orientation].
+     */
+    [CCode (notify = false)]
+    public bool vertical {
+        get { return orientation == Gtk.Orientation.VERTICAL; }
+        set { orientation = value ? Gtk.Orientation.VERTICAL : Gtk.Orientation.HORIZONTAL; }
+    }
+
+    /**
+     * Emitted when the user drags the slider or uses keyboard arrows and its value changes.
+     */
+    public signal void dragged();
+
+    construct {
+        draw_value = false;
+
+        if (adjustment == null)
+            adjustment = new Gtk.Adjustment(0,0,0,0,0,0);
+
+        if (max == 0 && min == 0) {
+            max = 1;
+        }
+
+        if (step == 0) {
+            step = 0.05;
+        }
+
+        notify["orientation"].connect(() => {
+            notify_property("vertical");
+        });
+
+        button_press_event.connect(() => { dragging = true; });
+        key_press_event.connect(() => { dragging = true; });
+        button_release_event.connect(() => { dragging = false; });
+        key_release_event.connect(() => { dragging = false; });
+        scroll_event.connect((event) => {
+            dragging = true;
+            if (event.delta_y > 0)
+                value -= step;
+            else
+                value += step;
+            dragging = false;
+        });
+
+        value_changed.connect(() => {
+            if (dragging)
+                dragged();
+        });
+    }
+
+    /**
+     * `true` when the user drags the slider or uses keyboard arrows.
+     */
+    public bool dragging { get; private set; }
+
+    /**
+     * Value of this slider. Defaults to `0`.
+     */
+    public double value {
+        get { return adjustment.value; }
+        set { if (!dragging) adjustment.value = value; }
+    }
+
+    /**
+     * Minimum possible value of this slider. Defaults to `0`.
+     */
+    public double min {
+        get { return adjustment.lower; }
+        set { adjustment.lower = value; }
+    }
+
+    /**
+     * Maximum possible value of this slider. Defaults to `1`.
+     */
+    public double max {
+        get { return adjustment.upper; }
+        set { adjustment.upper = value; }
+    }
+
+    /**
+     * Size of step increments. Defaults to `0.05`.
+     */
+    public double step {
+        get { return adjustment.step_increment; }
+        set { adjustment.step_increment = value; }
+    }
+
+    // TODO: marks
+}