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Spinner: optimized up/down arrow positions

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This commit is contained in:
Karl Tauber
2020-05-24 19:05:28 +02:00
parent 283535c429
commit 502731d3b0
2 changed files with 36 additions and 6 deletions
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34
flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatArrowButton.java
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@@ -149,8 +149,15 @@ public class FlatArrowButton
int h = scale( (arrowWidth / 2) + (chevron ? 0 : 1) );
int rw = vert ? w : h;
int rh = vert ? h : w;
int x = Math.round( (width - rw) / 2f + scale( (float) xOffset ) );
int y = Math.round( (height - rh) / 2f + scale( (float) yOffset ) );
// Adding -/+0.35 before rounding tends move up NORTH arrows and move down SOUTH arrows.
// This makes top margin of NORTH arrow equal to bottom margin of SOUTH arrow.
float rd = 0.35f;
float xrd = vert ? 0 : (direction == WEST ? -rd : rd);
float yrd = vert ? (direction == NORTH ? -rd : rd) : 0;
int x = Math.round( (width - rw) / 2f + scale( (float) xOffset ) + xrd );
int y = Math.round( (height - rh) / 2f + scale( (float) yOffset ) + yrd );
// optimization for small chevron arrows (e.g. OneTouchButtons in SplitPane)
if( x + rw >= width && x > 0 )
@@ -160,7 +167,7 @@ public class FlatArrowButton
// move arrow for round borders
Container parent = getParent();
if( parent instanceof JComponent && FlatUIUtils.hasRoundBorder( (JComponent) parent ) )
if( vert && parent instanceof JComponent && FlatUIUtils.hasRoundBorder( (JComponent) parent ) )
x -= scale( parent.getComponentOrientation().isLeftToRight() ? 1 : -1 );
// paint arrow
@@ -168,6 +175,9 @@ public class FlatArrowButton
? (isHover() && hoverForeground != null ? hoverForeground : foreground)
: disabledForeground );
g.translate( x, y );
/*debug
debugPaint( g2, vert, w, h );
debug*/
Shape arrowShape = createArrowShape( direction, chevron, w, h );
if( chevron ) {
g2.setStroke( new BasicStroke( scale( 1f ) ) );
@@ -188,4 +198,22 @@ public class FlatArrowButton
default: return new Path2D.Float();
}
}
/*debug
private void debugPaint( Graphics g, boolean vert, int w, int h ) {
Color oldColor = g.getColor();
g.setColor( Color.red );
g.drawRect( 0, 0, (vert ? w : h) - 1, (vert ? h : w) - 1 );
int xy1 = -2;
int xy2 = h + 1;
for( int i = 0; i < 20; i++ ) {
g.drawRect( vert ? 0 : xy1, vert ? xy1 : 0, 0, 0 );
g.drawRect( vert ? 0 : xy2, vert ? xy2 : 0, 0, 0 );
xy1 -= 2;
xy2 += 2;
}
g.setColor( oldColor );
}
debug*/
}

8
flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatSpinnerUI.java
View File

@@ -367,12 +367,14 @@ public class FlatSpinnerUI
if( editor != null )
editor.setBounds( FlatUIUtils.subtractInsets( editorRect, padding ) );
int nextHeight = Math.round( buttonsRect.height / 2f );
int nextHeight = (buttonsRect.height / 2) + (buttonsRect.height % 2); // round up
if( nextButton != null )
nextButton.setBounds( buttonsRect.x, buttonsRect.y, buttonsRect.width, nextHeight );
if( previousButton != null ) {
previousButton.setBounds( buttonsRect.x, buttonsRect.y + nextHeight,
buttonsRect.width, buttonsRect.height - nextHeight );
// for precise layout of arrows, the "previous" button has the same height
// as the "next" button and may overlap on uneven buttonsRect.height
int previousY = buttonsRect.y + buttonsRect.height - nextHeight;
previousButton.setBounds( buttonsRect.x, previousY, buttonsRect.width, nextHeight );
}
}