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Window decorations on Linux: fixed behavior of maximize/restore button when tiling window to left or right half of screen (issue #647)

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This commit is contained in:
Karl Tauber
2023-02-23 15:26:11 +01:00
parent 546382e471
commit 425f3acced
4 changed files with 101 additions and 13 deletions
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2
flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatRootPaneUI.java
View File

@@ -551,7 +551,7 @@ public class FlatRootPaneUI
protected boolean isWindowMaximized( Component c ) {
Container parent = c.getParent();
return parent instanceof Frame && (((Frame)parent).getExtendedState() & Frame.MAXIMIZED_BOTH) != 0;
return parent instanceof Frame && (((Frame)parent).getExtendedState() & Frame.MAXIMIZED_BOTH) == Frame.MAXIMIZED_BOTH;
}
}

54
flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatTitlePane.java
View File

@@ -360,9 +360,8 @@ public class FlatTitlePane
if( window instanceof Frame ) {
Frame frame = (Frame) window;
boolean maximized = ((frame.getExtendedState() & Frame.MAXIMIZED_BOTH) != 0);
if( maximized &&
if( isWindowMaximized() &&
!(SystemInfo.isLinux && FlatNativeLinuxLibrary.isWMUtilsSupported( window )) &&
rootPane.getClientProperty( "_flatlaf.maximizedBoundsUpToDate" ) == null )
{
@@ -393,7 +392,7 @@ public class FlatTitlePane
if( window instanceof Frame ) {
Frame frame = (Frame) window;
boolean maximizable = frame.isResizable() && clientPropertyBoolean( rootPane, TITLE_BAR_SHOW_MAXIMIZE, true );
boolean maximized = ((frame.getExtendedState() & Frame.MAXIMIZED_BOTH) != 0);
boolean maximized = isWindowMaximized();
iconifyButton.setVisible( clientPropertyBoolean( rootPane, TITLE_BAR_SHOW_ICONIFFY, true ) );
maximizeButton.setVisible( maximizable && !maximized );
@@ -643,7 +642,10 @@ public class FlatTitlePane
/** @since 2.4 */
protected boolean isWindowMaximized() {
return window instanceof Frame && (((Frame)window).getExtendedState() & Frame.MAXIMIZED_BOTH) != 0;
// Windows and macOS use always MAXIMIZED_BOTH.
// Only Linux uses MAXIMIZED_VERT and MAXIMIZED_HORIZ (when dragging window to left or right edge).
// (searched jdk source code)
return window instanceof Frame && (((Frame)window).getExtendedState() & Frame.MAXIMIZED_BOTH) == Frame.MAXIMIZED_BOTH;
}
/**
@@ -661,8 +663,30 @@ public class FlatTitlePane
rootPane.putClientProperty( "_flatlaf.maximizedBoundsUpToDate", true );
// maximize window
if( !FlatNativeWindowBorder.showWindow( frame, FlatNativeWindowBorder.Provider.SW_MAXIMIZE ) )
frame.setExtendedState( frame.getExtendedState() | Frame.MAXIMIZED_BOTH );
if( !FlatNativeWindowBorder.showWindow( frame, FlatNativeWindowBorder.Provider.SW_MAXIMIZE ) ) {
int oldState = frame.getExtendedState();
int newState = oldState | Frame.MAXIMIZED_BOTH;
if( SystemInfo.isLinux ) {
// Linux supports vertical and horizontal maximization:
// - dragging a window to left or right edge of screen vertically maximizes
// the window to the left or right half of the screen
// - don't know whether user can do horizontal maximization
// (Windows and macOS use only MAXIMIZED_BOTH)
//
// If a window is maximized vertically or horizontally (but not both),
// then Frame.setExtendedState() behaves not as expected on Linux.
// E.g. if window state is MAXIMIZED_VERT, calling setExtendedState(MAXIMIZED_BOTH)
// changes state to MAXIMIZED_HORIZ. But calling setExtendedState(MAXIMIZED_HORIZ)
// changes state from MAXIMIZED_VERT to MAXIMIZED_BOTH.
// Seems to be a bug in sun.awt.X11.XNETProtocol.requestState(),
// which does some strange state XOR-ing...
if( (oldState & Frame.MAXIMIZED_BOTH) == Frame.MAXIMIZED_VERT )
newState = oldState & ~Frame.MAXIMIZED_BOTH | Frame.MAXIMIZED_HORIZ;
}
frame.setExtendedState( newState );
}
}
protected void updateMaximizedBounds() {
@@ -766,8 +790,7 @@ public class FlatTitlePane
if( !(window instanceof Frame) || !((Frame)window).isResizable() )
return;
Frame frame = (Frame) window;
if( (frame.getExtendedState() & Frame.MAXIMIZED_BOTH) != 0 )
if( isWindowMaximized() )
restore();
else
maximize();
@@ -1188,6 +1211,13 @@ public class FlatTitlePane
@Override
public void windowStateChanged( WindowEvent e ) {
/*debug
System.out.println( "state " + e.getOldState() + " -> " + e.getNewState() + " "
+ ((e.getNewState() & Frame.MAXIMIZED_HORIZ) != 0 ? " HORIZ" : "")
+ ((e.getNewState() & Frame.MAXIMIZED_VERT) != 0 ? " VERT" : "")
);
debug*/
frameStateChanged();
updateNativeTitleBarHeightAndHitTestSpots();
}
@@ -1195,7 +1225,7 @@ public class FlatTitlePane
//---- interface MouseListener ----
private Point dragOffset;
private boolean nativeMove;
private boolean linuxNativeMove;
private long lastSingleClickWhen;
@Override
@@ -1241,7 +1271,7 @@ public class FlatTitlePane
return;
dragOffset = SwingUtilities.convertPoint( FlatTitlePane.this, e.getPoint(), window );
nativeMove = false;
linuxNativeMove = false;
// on Linux, move or maximize/restore window
if( SystemInfo.isLinux && FlatNativeLinuxLibrary.isWMUtilsSupported( window ) ) {
@@ -1261,7 +1291,7 @@ public class FlatTitlePane
case 1:
// move window via _NET_WM_MOVERESIZE message
e.consume();
nativeMove = FlatNativeLinuxLibrary.moveOrResizeWindow( window, e, FlatNativeLinuxLibrary.MOVE );
linuxNativeMove = FlatNativeLinuxLibrary.moveOrResizeWindow( window, e, FlatNativeLinuxLibrary.MOVE );
lastSingleClickWhen = e.getWhen();
break;
@@ -1291,7 +1321,7 @@ public class FlatTitlePane
if( window == null || dragOffset == null )
return; // should newer occur
if( nativeMove )
if( linuxNativeMove )
return;
if( !SwingUtilities.isLeftMouseButton( e ) )