Added screen slide timer

* Added screen slide timer
  * Added so that the animation becomes interruptible.

1 files changed, 46 insertions, 0 deletions

diff --git a/src/screenslidetimer.h b/src/screenslidetimer.h
new file mode 100644
index 00000000..c2bf7a8d
--- /dev/null
+++ b/src/screenslidetimer.h
@@ -0,0 +1,46 @@
+#pragma once
+
+#include <QObject>
+#include <QParallelAnimationGroup>
+#include <QTimer>
+
+namespace kal
+{
+class ScreenSlideTimer : public QObject
+{
+  Q_OBJECT
+
+public:
+  static const int TRANSITION_BOOKEND_DELAY = 300;
+
+  explicit ScreenSlideTimer(QObject *parent = nullptr);
+  virtual ~ScreenSlideTimer();
+
+  void addAnimation(QAbstractAnimation *animation);
+
+public Q_SLOTS:
+  void start();
+  void stop();
+
+Q_SIGNALS:
+  void started();
+  void finished();
+
+private:
+  enum TransitionState
+  {
+    NoTransition,
+    PreTransition,
+    GroupTransition,
+    PostTransition,
+  };
+
+  bool m_running = false;
+  TransitionState m_state = NoTransition;
+  QParallelAnimationGroup *m_group;
+  QTimer *m_pause;
+
+private Q_SLOTS:
+  void startNextState();
+};
+} // namespace kal