From 736d3e1f1dac61b532ff3a76bbf2438b5f1f532e Mon Sep 17 00:00:00 2001
From: adikso <adam@zambrzycki.net>
Date: Sun, 14 Jul 2019 02:52:43 +0200
Subject: [PATCH] Add scrolling to DisassemblyWidget left panel

---
 src/widgets/DisassemblyWidget.cpp | 11 +++++++++--
 src/widgets/DisassemblyWidget.h   |  3 ++-
 2 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/src/widgets/DisassemblyWidget.cpp b/src/widgets/DisassemblyWidget.cpp
index 58982f15..72ae073a 100644
--- a/src/widgets/DisassemblyWidget.cpp
+++ b/src/widgets/DisassemblyWidget.cpp
@@ -79,7 +79,7 @@ DisassemblyWidget::DisassemblyWidget(MainWindow *main, QAction *action)
     mDisasScrollArea->setFocusPolicy(Qt::ClickFocus);
 
     setFocusPolicy(Qt::ClickFocus);
-    
+
     // Behave like all widgets: highlight on focus and hover
     connect(qApp, &QApplication::focusChanged, this, [this](QWidget* , QWidget* now) {
         QColor borderColor = this == now
@@ -217,7 +217,7 @@ DisassemblyWidget::DisassemblyWidget(MainWindow *main, QAction *action)
     ADD_ACTION(QKeySequence::MoveToPreviousPage, Qt::WidgetWithChildrenShortcut, [this]() {
         moveCursorRelative(true, true);
     })
-    
+
     // Plus sign in num-bar considered "Qt::Key_Equal"
     ADD_ACTION(QKeySequence(Qt::CTRL + Qt::Key_Equal), Qt::WidgetWithChildrenShortcut, &DisassemblyWidget::zoomIn)
     // Plus sign in numpad
@@ -813,6 +813,13 @@ DisassemblyLeftPanel::DisassemblyLeftPanel(DisassemblyWidget *disas)
     this->disas = disas;
 }
 
+void DisassemblyLeftPanel::wheelEvent(QWheelEvent *event) {
+    int count = -(event->angleDelta() / 15).y();
+    count -= (count > 0 ? 5 : -5);
+
+    this->disas->scrollInstructions(count);
+}
+
 void DisassemblyLeftPanel::paintEvent(QPaintEvent *event)
 {
     Q_UNUSED(event)
diff --git a/src/widgets/DisassemblyWidget.h b/src/widgets/DisassemblyWidget.h
index b25d565c..3165203a 100644
--- a/src/widgets/DisassemblyWidget.h
+++ b/src/widgets/DisassemblyWidget.h
@@ -32,6 +32,7 @@ public slots:
     void showDisasContextMenu(const QPoint &pt);
     void fontsUpdatedSlot();
     void colorsUpdatedSlot();
+    void scrollInstructions(int count);
     void seekPrev();
     void setPreviewMode(bool previewMode);
     QFontMetrics getFontMetrics();
@@ -41,7 +42,6 @@ protected slots:
     void on_seekChanged(RVA offset);
     void refreshDisasm(RVA offset = RVA_INVALID);
 
-    void scrollInstructions(int count);
     bool updateMaxLines();
 
     void cursorPositionChanged();
@@ -143,6 +143,7 @@ class DisassemblyLeftPanel: public QFrame
 public:
     DisassemblyLeftPanel(DisassemblyWidget *disas);
     void paintEvent(QPaintEvent *event) override;
+    void wheelEvent(QWheelEvent *event) override;
 
 private:
     DisassemblyWidget *disas;