SoundPlayer: Added playback controls

The playback of a file can now be paused, stopped, continued and the
user can seek to any part of the file.

1 files changed, 59 insertions, 0 deletions

diff --git a/Applications/SoundPlayer/SoundPlayerWidget.h b/Applications/SoundPlayer/SoundPlayerWidget.h
new file mode 100644
index 0000000000..65a6dc36e4
--- /dev/null
+++ b/Applications/SoundPlayer/SoundPlayerWidget.h
@@ -0,0 +1,59 @@
+#pragma once
+
+#include "PlaybackManager.h"
+#include "SampleWidget.h"
+#include <LibGUI/GButton.h>
+#include <LibGUI/GLabel.h>
+#include <LibGUI/GSlider.h>
+#include <LibGUI/GWidget.h>
+
+class SoundPlayerWidget final : public GWidget {
+    C_OBJECT(SoundPlayerWidget)
+public:
+    virtual ~SoundPlayerWidget() override;
+
+private:
+    explicit SoundPlayerWidget(NonnullRefPtr<AClientConnection>, AWavLoader&);
+
+    void update_position(const int position);
+    void update_ui();
+    int normalize_rate(int) const;
+    int denormalize_rate(int) const;
+
+    class Slider final : public GSlider {
+        C_OBJECT(Slider)
+    public:
+        virtual ~Slider() override;
+        Function<void(int)> on_knob_released;
+        void set_value(int value)
+        {
+            if (!knob_dragging())
+                GSlider::set_value(value);
+        }
+
+    protected:
+        Slider(Orientation orientation, GWidget* parent)
+            : GSlider(orientation, parent)
+        {
+        }
+
+        virtual void mouseup_event(GMouseEvent& event) override
+        {
+            if (on_knob_released && is_enabled())
+                on_knob_released(value());
+
+            GSlider::mouseup_event(event);
+        }
+    };
+
+    PlaybackManager m_manager;
+    float m_sample_ratio;
+    RefPtr<GLabel> m_status;
+    RefPtr<GLabel> m_elapsed;
+    RefPtr<GLabel> m_remaining;
+    RefPtr<Slider> m_slider;
+    RefPtr<SampleWidget> m_sample_widget;
+    RefPtr<GraphicsBitmap> m_play_icon { GraphicsBitmap::load_from_file("/res/icons/16x16/play.png") };
+    RefPtr<GraphicsBitmap> m_pause_icon { GraphicsBitmap::load_from_file("/res/icons/16x16/pause.png") };
+    RefPtr<GButton> m_play;
+};