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JIDE: RangeSlider: clicking on track now immediately moves the thumb to mouse location and starts dragging the thumb

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This commit is contained in:
Karl Tauber
2020-12-20 18:24:40 +01:00
parent 0123a8895f
commit a2af9e4c65
4 changed files with 200 additions and 9 deletions
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67
flatlaf-jide-oss/src/main/java/com/formdev/flatlaf/jideoss/ui/FlatRangeSliderUI.java
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@@ -23,12 +23,14 @@ import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.event.MouseEvent;
import java.awt.geom.RoundRectangle2D;
import java.util.Dictionary;
import java.util.Enumeration;
import javax.swing.JComponent;
import javax.swing.JSlider;
import javax.swing.LookAndFeel;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.plaf.ComponentUI;
import com.formdev.flatlaf.ui.FlatSliderUI;
@@ -144,6 +146,11 @@ public class FlatRangeSliderUI
disabledThumbBorderColor = null;
}
@Override
protected TrackListener createTrackListener( JSlider slider ) {
return new FlatRangeTrackListener( super.createTrackListener( slider ) );
}
@Override
public int getBaseline( JComponent c, int width, int height ) {
if( c == null )
@@ -300,4 +307,64 @@ debug*/
protected boolean isRoundThumb() {
return !slider.getPaintTicks() && !slider.getPaintLabels();
}
//---- class FlatRangeTrackListener ---------------------------------------
protected class FlatRangeTrackListener
extends RangeTrackListener
{
public FlatRangeTrackListener( TrackListener listener ) {
super( listener );
}
@Override
public void mousePressed( MouseEvent e ) {
if( !slider.isEnabled() )
return;
// use "old" behavior when clicking on track
if( UIManager.getBoolean( "Slider.scrollOnTrackClick" ) ) {
super.mousePressed( e );
return;
}
// "new" behavior set thumb to mouse location when clicking on track
int x = e.getX();
int y = e.getY();
int handle = getMouseHandle( x, y );
// clicked on thumb --> let super class do the work
if( handle != MOUSE_HANDLE_LOWER && handle != MOUSE_HANDLE_UPPER ) {
super.mousePressed( e );
return;
}
if( UIManager.getBoolean( "Slider.onlyLeftMouseButtonDrag" ) &&
!SwingUtilities.isLeftMouseButton( e ) )
return;
// get low or high thumb rectangle
Rectangle thumbRect = FlatRangeSliderUI.this.thumbRect;
if( handle == MOUSE_HANDLE_UPPER ) {
Point p = adjustThumbForHighValue();
thumbRect = new Rectangle( FlatRangeSliderUI.this.thumbRect );
restoreThumbForLowValue( p );
}
// move the mouse event coordinates to the center of the thumb
int tx = thumbRect.x + (thumbRect.width / 2) - x;
int ty = thumbRect.y + (thumbRect.height / 2) - y;
e.translatePoint( tx, ty );
// invoke super mousePressed() to start dragging thumb
super.mousePressed( e );
// move the mouse event coordinates back to current mouse location
e.translatePoint( -tx, -ty );
// invoke mouseDragged() to update thumb location
mouseDragged( e );
}
}
}