1 files changed, 0 insertions, 55 deletions
diff --git a/src/util/widgetrendertimer.h b/src/util/widgetrendertimer.h
deleted file mode 100644
index d137fb98d7..0000000000
--- a/src/util/widgetrendertimer.h
+++ /dev/null
@@ -1,55 +0,0 @@
-#pragma once
-
-#include <QObject>
-
-#include "util/duration.h"
-#include "util/timer.h"
-
-// A helper class for rendering widgets on a timer when they need updating.
-// Prevents calling QWidget::update too quickly. Controlled by two parameters:
-// - renderFrequency: The frequency to render the widget at in response
-//   to updates.
-// - inactivityTimeout: The timeout after which the widget's render timer is
-//   deactivated.
-//
-// This class was created in response to issue #9437. With Qt 4, we
-// would simply call QWidget::update in response to input events that required
-// re-rendering widgets, relying on Qt to batch them together and deliver them
-// at a reasonable frequency. On macOS, the behavior of QWidget::update in Qt 5
-// seems to have changed such that render events happen much more frequently
-// than they used to. To address this, we instead use a downsampling timer
-// attached to the VSyncThread's render ticks for the waveform renderers. The
-// timer invokes guiTick(), which is responsible for actually calling
-// QWidget::update(). When input arrives, we call inputActivity to attach the
-// timer. After 1 second of inactivity, we disconnect the timer.
-//
-// Ironically, using this class somehow causes severe lagginess on mouse input
-// with Windows, so use #ifdefs to only call activity() on macOS; just call
-// QWidget::update() for other operating systems.
-class WidgetRenderTimer : public QObject {
-    Q_OBJECT
-  public:
-    WidgetRenderTimer(mixxx::Duration renderFrequency,
-                      mixxx::Duration inactivityTimeout);
-
-    // Call this method whenever the widget's state has changed such that a
-    // re-render is necessary.
-    void activity();
-
-  signals:
-    // Emitted when the widget should actually render. Connect this signal to
-    // QWidget::update or QWidget::repaint.
-    void update();
-
-  private slots:
-    // Called when the internal GuiTickTimer's timeout is elapsed. Decides
-    // whether the widget should render in response to this timer tick.
-    void guiTick();
-
-  private:
-    const mixxx::Duration m_renderFrequency;
-    const mixxx::Duration m_inactivityTimeout;
-    GuiTickTimer m_guiTickTimer;
-    mixxx::Duration m_lastActivity;
-    mixxx::Duration m_lastRender;
-};