Hack GanttProject for mouse wheel behavior

I love GanttProject. Becouse it is most effecient opensource project management tool for me. But I feel discomfort to behavior of mouse wheel. I ofeten use wheel for scrolling. But, in case of GanttProject, mouse wheel assign to zooming operation. I ofeten missoperation and feel frastrations. That's why I made patch and binary for mouse wheel behavior. You can download binary file form following link.

DOWNLOAD BINARY(ganttproject.jar)

This patch changing.

• You roll up/down wheel on chart area to scroll up/down.
• You ctrl + roll up/down wheel on chart area to zoom in/out.

Usage

1. Download "ganttproject.jar" from a link above.
2. Place "ganttproject.jar" to your GanttProject installed folder. (GanttProject Installed folder)\plugins\net.sourceforge.ganttproject_2.0.0
3. Launch GanttProject.

I post patch for your feference.

	Please see for more info.
	http://sumimasen2.blogspot.com/2008/11/hack-ganttproject-for-mouse-wheel.html

view raw readme.txt hosted with ❤ by GitHub

	Index: D:/MyProject/GanttProject/ganttproject/src/net/sourceforge/ganttproject/ChartComponentBase.java
	===================================================================
	--- D:/MyProject/GanttProject/ganttproject/src/net/sourceforge/ganttproject/ChartComponentBase.java (revision 118)
	+++ D:/MyProject/GanttProject/ganttproject/src/net/sourceforge/ganttproject/ChartComponentBase.java (working copy)
	@@ -290,7 +290,14 @@
	protected class MouseWheelListenerBase implements MouseWheelListener {
	public void mouseWheelMoved(MouseWheelEvent e) {
	- if (isRotationUp(e)) {
	+ // Scroll
	+ if (!e.isControlDown()) {
	+ scrollTreePane(e.getWheelRotation() * 90)
	+ return
	+ }
	+
	+ // Zoom
	+ if (isRotationUp(e)) {
	fireZoomOut()
	} else {
	fireZoomIn()
	@@ -313,6 +320,9 @@
	return e.getWheelRotation() < 0
	}
	}
	+
	+ protected void scrollTreePane(int amount) {
	+ }
	protected abstract AbstractChartImplementation getImplementation()
	Index: D:/MyProject/GanttProject/ganttproject/src/net/sourceforge/ganttproject/GanttGraphicArea.java
	===================================================================
	--- D:/MyProject/GanttProject/ganttproject/src/net/sourceforge/ganttproject/GanttGraphicArea.java (revision 118)
	+++ D:/MyProject/GanttProject/ganttproject/src/net/sourceforge/ganttproject/GanttGraphicArea.java (working copy)
	@@ -973,6 +973,13 @@
	setActiveInteraction(new MoveTaskInteractions(e, tasks))
	}
	}
	+
	+ /**
	+ * Scrolling by relative amount.
	+ */
	+ protected void scrollTreePane(int amount) {
	+ tree.scrollVertical(amount)
	+ }
	private class NewChartComponentImpl extends ChartImplementationBase
	implements ChartImplementation {
	Index: D:/MyProject/GanttProject/ganttproject/src/net/sourceforge/ganttproject/GanttTree2.java
	===================================================================
	--- D:/MyProject/GanttProject/ganttproject/src/net/sourceforge/ganttproject/GanttTree2.java (revision 118)
	+++ D:/MyProject/GanttProject/ganttproject/src/net/sourceforge/ganttproject/GanttTree2.java (working copy)
	@@ -558,6 +558,24 @@
	+ (vbar.isVisible() ? vbar.getWidth() : 0), y - vbar.getValue()
	+ 20)
	}
	+
	+ /**
	+ * Scroll up/down
	+ */
	+ public void scrollVertical(int amount) {
	+ int originalValue = vbar.getValue()
	+
	+ int newValue = originalValue + amount
	+
	+ if (newValue < vbar.getMinimum()) {
	+ newValue = vbar.getMinimum()
	+ }
	+ else if (vbar.getMaximum() < newValue) {
	+ newValue = vbar.getMaximum()
	+ }
	+
	+ vbar.setValue(newValue)
	+ }
	/** Change grpahic part */
	public void setGraphicArea(GanttGraphicArea area) {

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