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TabbedPane: fixes

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- avoid that tab area "jump" to the right/top when backward button becomes hidden
- scroll arrow buttons were not always hidden in right-to-left horizontal layout
This commit is contained in:
Karl Tauber
2020-11-14 00:24:38 +01:00
parent afccdc4749
commit 7dbc6ff8a3
1 changed files with 16 additions and 2 deletions
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18
flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatTabbedPaneUI.java
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@@ -2563,7 +2563,7 @@ public class FlatTabbedPaneUI
// because methods scrollForward() and scrollBackward() in class
// BasicTabbedPaneUI.ScrollableTabSupport do not work for right-to-left
boolean leftToRight = isLeftToRight();
if( !leftToRight && !useMoreTabsButton && isHorizontalTabPlacement() ) {
if( !leftToRight && isHorizontalTabPlacement() ) {
useMoreTabsButton = true;
useScrollButtons = false;
}
@@ -2581,7 +2581,7 @@ public class FlatTabbedPaneUI
}
}
if( !useMoreTabsButton && (backwardButton == null || forwardButton == null) )
if( backwardButton == null || forwardButton == null )
return; // should never occur
Rectangle bounds = tabPane.getBounds();
@@ -2610,6 +2610,13 @@ public class FlatTabbedPaneUI
// layout tab area
if( tabPlacement == TOP || tabPlacement == BOTTOM ) {
// avoid that tab area "jump" to the right when backward button becomes hidden
if( useScrollButtons && hideDisabledScrollButtons ) {
Point viewPosition = tabViewport.getViewPosition();
if( viewPosition.x <= backwardButton.getPreferredSize().width )
tabViewport.setViewPosition( new Point( 0, viewPosition.y ) );
}
// tab area height (maxTabHeight is zero if tab count is zero)
int tabAreaHeight = (maxTabHeight > 0)
? maxTabHeight
@@ -2726,6 +2733,13 @@ public class FlatTabbedPaneUI
}
}
} else { // LEFT and RIGHT tab placement
// avoid that tab area "jump" to the top when backward button becomes hidden
if( useScrollButtons && hideDisabledScrollButtons ) {
Point viewPosition = tabViewport.getViewPosition();
if( viewPosition.y <= backwardButton.getPreferredSize().height )
tabViewport.setViewPosition( new Point( viewPosition.x, 0 ) );
}
// tab area width (maxTabWidth is zero if tab count is zero)
int tabAreaWidth = (maxTabWidth > 0)
? maxTabWidth