Fix scroll speed being dependent on the line count in the file.

Closes #383.

1 files changed, 4 insertions, 0 deletions

diff --git a/enigma-swing/src/main/java/cuchaz/enigma/gui/panels/EditorPanel.java b/enigma-swing/src/main/java/cuchaz/enigma/gui/panels/EditorPanel.java
index 61b48ce8..8f020b8a 100644
--- a/enigma-swing/src/main/java/cuchaz/enigma/gui/panels/EditorPanel.java
+++ b/enigma-swing/src/main/java/cuchaz/enigma/gui/panels/EditorPanel.java
@@ -99,6 +99,10 @@ public class EditorPanel {
                 DefaultSyntaxKit kit = (DefaultSyntaxKit) this.editor.getEditorKit();
                 kit.toggleComponent(this.editor, "de.sciss.syntaxpane.components.TokenMarker");
 
+                // set unit increment to height of one line, the amount scrolled per
+                // mouse wheel rotation is then controlled by OS settings
+                this.editorScrollPane.getVerticalScrollBar().setUnitIncrement(this.editor.getFontMetrics(this.editor.getFont()).getHeight());
+
                 // init editor popup menu
                 this.popupMenu = new EditorPopupMenu(this, gui);
                 this.editor.setComponentPopupMenu(this.popupMenu.getUi());