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Menus: support alignment and text position properties (issue #3)

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This commit is contained in:
Karl Tauber
2020-04-27 11:52:11 +02:00
parent 2735185eb9
commit be23e5709d
3 changed files with 613 additions and 65 deletions
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145
flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatMenuItemRenderer.java
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@@ -18,6 +18,7 @@ package com.formdev.flatlaf.ui;
import static com.formdev.flatlaf.util.UIScale.scale;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.FontMetrics;
@@ -75,26 +76,21 @@ public class FlatMenuItemRenderer
int height = 0;
boolean isTopLevelMenu = isTopLevelMenu( menuItem );
// icon size
Dimension iconSize = getIconSize();
width += iconSize.width;
height = Math.max( iconSize.height, height );
Rectangle viewRect = new Rectangle( 0, 0, Integer.MAX_VALUE, Integer.MAX_VALUE );
Rectangle iconRect = new Rectangle();
Rectangle textRect = new Rectangle();
// gap between icon and text
if( iconSize.width > 0 )
width += scale( menuItem.getIconTextGap() );
// layout icon and text
SwingUtilities.layoutCompoundLabel( menuItem,
menuItem.getFontMetrics( menuItem.getFont() ), menuItem.getText(), getIconForLayout(),
menuItem.getVerticalAlignment(), menuItem.getHorizontalAlignment(),
menuItem.getVerticalTextPosition(), menuItem.getHorizontalTextPosition(),
viewRect, iconRect, textRect, scale( menuItem.getIconTextGap() ) );
// text size
View htmlView = (View) menuItem.getClientProperty( BasicHTML.propertyKey );
if( htmlView != null ) {
width += htmlView.getPreferredSpan( View.X_AXIS );
height = Math.max( (int) htmlView.getPreferredSpan( View.Y_AXIS ), height );
} else {
String text = menuItem.getText();
FontMetrics fm = menuItem.getFontMetrics( menuItem.getFont() );
width += SwingUtilities.computeStringWidth( fm, text );
height = Math.max( fm.getHeight(), height );
}
// union icon and text rectangles
Rectangle labelRect = iconRect.union( textRect );
width += labelRect.width;
height = Math.max( labelRect.height, height );
// accelerator size
String accelText = getAcceleratorText();
@@ -110,7 +106,8 @@ public class FlatMenuItemRenderer
// arrow size
if( !isTopLevelMenu && arrowIcon != null ) {
// gap between text and arrow
width += scale( textArrowGap );
if( accelText == null )
width += scale( textArrowGap );
width += arrowIcon.getIconWidth();
height = Math.max( arrowIcon.getIconHeight(), height );
@@ -133,21 +130,15 @@ public class FlatMenuItemRenderer
private void layout( Rectangle viewRect, Rectangle iconRect, Rectangle textRect,
Rectangle accelRect, Rectangle arrowRect )
{
// layout icon
iconRect.setSize( getIconSize() );
iconRect.y = viewRect.y + ((viewRect.height - iconRect.height) / 2);
// layout text
FontMetrics fm = menuItem.getFontMetrics( menuItem.getFont() );
textRect.width = SwingUtilities.computeStringWidth( fm, menuItem.getText() );
textRect.height = fm.getHeight();
textRect.y = viewRect.y + ((viewRect.height - textRect.height) / 2);
boolean isTopLevelMenu = isTopLevelMenu( menuItem );
// layout arrow
Icon arrowIcon = !isTopLevelMenu( menuItem ) ? this.arrowIcon : null;
arrowRect.width = (arrowIcon != null) ? arrowIcon.getIconWidth() : 0;
arrowRect.height = (arrowIcon != null) ? arrowIcon.getIconHeight() : 0;
arrowRect.y = viewRect.y + ((viewRect.height - arrowRect.height) / 2);
if( !isTopLevelMenu && arrowIcon != null ) {
arrowRect.width = arrowIcon.getIconWidth();
arrowRect.height = arrowIcon.getIconHeight();
} else
arrowRect.setSize( 0, 0 );
arrowRect.y = viewRect.y + centerOffset( viewRect.height, arrowRect.height );
// layout accelerator
String accelText = getAcceleratorText();
@@ -156,27 +147,44 @@ public class FlatMenuItemRenderer
accelRect.width = SwingUtilities.computeStringWidth( accelFm, accelText );
accelRect.height = accelFm.getHeight();
accelRect.y = viewRect.y + ((viewRect.height - accelRect.height) / 2);
accelRect.y = viewRect.y + centerOffset( viewRect.height, accelRect.height );
} else
accelRect.setBounds( 0, 0, 0, 0 );
// compute horizontal positions of accelerator and arrow
if( menuItem.getComponentOrientation().isLeftToRight() ) {
// left-to-right
iconRect.x = viewRect.x;
textRect.x = iconRect.x + iconRect.width
+ (iconRect.width > 0 ? scale( menuItem.getIconTextGap() ) : 0);
arrowRect.x = viewRect.x + viewRect.width - arrowRect.width;
if( accelText != null )
accelRect.x = arrowRect.x - accelRect.width;
accelRect.x = arrowRect.x - accelRect.width;
} else {
// right-to-left
iconRect.x = viewRect.x + viewRect.width - iconRect.width;
textRect.x = iconRect.x - textRect.width
- (iconRect.width > 0 ? scale( menuItem.getIconTextGap() ) : 0);
arrowRect.x = viewRect.x;
if( accelText != null )
accelRect.x = arrowRect.x + arrowRect.width;
accelRect.x = arrowRect.x + arrowRect.width;
}
// width of accelerator, arrow and gap
int accelArrowWidth = accelRect.width + arrowRect.width;
if( accelText != null )
accelArrowWidth += scale( textAcceleratorGap );
else if( !isTopLevelMenu && arrowIcon != null )
accelArrowWidth += scale( textArrowGap );
// label rectangle is view rectangle subtracted by accelerator, arrow and gap
Rectangle labelRect = new Rectangle( viewRect );
labelRect.width -= accelArrowWidth;
if( !menuItem.getComponentOrientation().isLeftToRight() )
labelRect.x += accelArrowWidth;
// layout icon and text
SwingUtilities.layoutCompoundLabel( menuItem,
menuItem.getFontMetrics( menuItem.getFont() ), menuItem.getText(), getIconForLayout(),
menuItem.getVerticalAlignment(), menuItem.getHorizontalAlignment(),
menuItem.getVerticalTextPosition(), menuItem.getHorizontalTextPosition(),
labelRect, iconRect, textRect, scale( menuItem.getIconTextGap() ) );
}
private static int centerOffset( int wh1, int wh2 ) {
return (wh1 != wh2) ? Math.round( (wh1 - wh2) / 2f ) : 0;
}
protected void paintMenuItem( Graphics g, Color selectionBackground, Color selectionForeground,
@@ -206,13 +214,11 @@ public class FlatMenuItemRenderer
g.setColor( Color.orange ); g.drawRect( arrowRect.x, arrowRect.y, arrowRect.width - 1, arrowRect.height - 1 );
debug*/
boolean isTopLevelMenu = isTopLevelMenu( menuItem );
paintBackground( g, selectionBackground );
paintIcon( g, iconRect, getIconForPainting() );
paintText( g, textRect, menuItem.getText(), selectionForeground, disabledForeground );
paintAccelerator( g, accelRect, getAcceleratorText(), acceleratorForeground, acceleratorSelectionForeground, disabledForeground );
if( !isTopLevelMenu )
if( !isTopLevelMenu( menuItem ) )
paintArrowIcon( g, arrowRect, arrowIcon );
}
@@ -256,9 +262,9 @@ debug*/
if( icon == null )
return;
// center
int x = iconRect.x + ((iconRect.width - icon.getIconWidth()) / 2);
int y = iconRect.y + ((iconRect.height - icon.getIconHeight()) / 2);
// center because the real icon may be smaller than dimension in iconRect
int x = iconRect.x + centerOffset( iconRect.width, icon.getIconWidth() );
int y = iconRect.y + centerOffset( iconRect.height, icon.getIconHeight() );
// paint
icon.paintIcon( menuItem, g, x, y );
@@ -315,20 +321,13 @@ debug*/
return icon;
}
private Dimension getIconSize() {
private Icon getIconForLayout() {
if( isTopLevelMenu( menuItem ) ) {
Icon icon = menuItem.getIcon();
return (icon != null)
? new Dimension( icon.getIconWidth(), icon.getIconHeight() )
: new Dimension();
return (icon != null) ? new MinSizeIcon( icon ) : null;
}
Icon icon = (checkIcon != null) ? checkIcon : menuItem.getIcon();
int iconWidth = (icon != null) ? icon.getIconWidth() : 0;
int iconHeight = (icon != null) ? icon.getIconHeight() : 0;
return new Dimension(
Math.max( iconWidth, scale( minimumIconSize.width ) ),
Math.max( iconHeight, scale( minimumIconSize.height ) ) );
return new MinSizeIcon( (checkIcon != null) ? checkIcon : menuItem.getIcon() );
}
private KeyStroke cachedAccelerator;
@@ -358,4 +357,32 @@ debug*/
return cachedAcceleratorText;
}
//---- class MinSizeIcon --------------------------------------------------
private class MinSizeIcon
implements Icon
{
private final Icon delegate;
MinSizeIcon( Icon delegate ) {
this.delegate = delegate;
}
@Override
public int getIconWidth() {
int iconWidth = (delegate != null) ? delegate.getIconWidth() : 0;
return Math.max( iconWidth, scale( minimumIconSize.width ) );
}
@Override
public int getIconHeight() {
int iconHeight = (delegate != null) ? delegate.getIconHeight() : 0;
return Math.max( iconHeight, scale( minimumIconSize.height ) );
}
@Override
public void paintIcon( Component c, Graphics g, int x, int y ) {
}
}
}