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Code Issues Packages Projects Releases Wiki Activity

Window decorations: support moving window (issues #47 and #82)

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This commit is contained in:
Karl Tauber
2020-05-28 23:49:46 +02:00
parent 954cae8738
commit 4f79cdad50
1 changed files with 56 additions and 2 deletions
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58
flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatTitlePane.java
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@@ -30,6 +30,7 @@ import java.awt.Window;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.geom.AffineTransform;
@@ -94,6 +95,7 @@ class FlatTitlePane
activeChanged( true );
addMouseListener( handler );
addMouseMotionListener( handler );
}
private void addSubComponents() {
@@ -329,7 +331,7 @@ class FlatTitlePane
private class Handler
extends WindowAdapter
implements PropertyChangeListener, MouseListener
implements PropertyChangeListener, MouseListener, MouseMotionListener
{
//---- interface PropertyChangeListener ----
@@ -370,6 +372,9 @@ class FlatTitlePane
//---- interface MouseListener ----
private int lastXOnScreen;
private int lastYOnScreen;
@Override
public void mouseClicked( MouseEvent e ) {
if( e.getClickCount() == 2 &&
@@ -386,9 +391,58 @@ class FlatTitlePane
}
}
@Override public void mousePressed( MouseEvent e ) {}
@Override
public void mousePressed( MouseEvent e ) {
lastXOnScreen = e.getXOnScreen();
lastYOnScreen = e.getYOnScreen();
}
@Override public void mouseReleased( MouseEvent e ) {}
@Override public void mouseEntered( MouseEvent e ) {}
@Override public void mouseExited( MouseEvent e ) {}
//---- interface MouseMotionListener ----
@Override
public void mouseDragged( MouseEvent e ) {
int xOnScreen = e.getXOnScreen();
int yOnScreen = e.getYOnScreen();
if( lastXOnScreen == xOnScreen && lastYOnScreen == yOnScreen )
return;
// restore window if it is maximized
if( window instanceof Frame ) {
Frame frame = (Frame) window;
int state = frame.getExtendedState();
if( (state & Frame.MAXIMIZED_BOTH) != 0 ) {
int maximizedX = window.getX();
int maximizedY = window.getY();
// restore window size, which also moves window to pre-maximized location
frame.setExtendedState( state & ~Frame.MAXIMIZED_BOTH );
int restoredWidth = window.getWidth();
int newX = maximizedX;
if( xOnScreen >= maximizedX + restoredWidth - buttonPanel.getWidth() - 10 )
newX = xOnScreen + buttonPanel.getWidth() + 10 - restoredWidth;
// move window near mouse
window.setLocation( newX, maximizedY );
return;
}
}
// compute new window location
int newX = window.getX() + (xOnScreen - lastXOnScreen);
int newY = window.getY() + (yOnScreen - lastYOnScreen);
// move window
window.setLocation( newX, newY );
lastXOnScreen = xOnScreen;
lastYOnScreen = yOnScreen;
}
@Override public void mouseMoved( MouseEvent e ) {}
}
}