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Spinner: optimized up/down chevron arrow positions

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This commit is contained in:
Karl Tauber
2020-05-25 13:05:59 +02:00
parent 502731d3b0
commit ebd6375672
1 changed files with 12 additions and 8 deletions
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20
flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatArrowButton.java
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@@ -145,11 +145,21 @@ public class FlatArrowButton
int direction = getDirection();
boolean vert = (direction == NORTH || direction == SOUTH);
// compute width/height
int w = scale( arrowWidth + (chevron ? 0 : 1) );
int h = scale( (arrowWidth / 2) + (chevron ? 0 : 1) );
// rotate width/height
int rw = vert ? w : h;
int rh = vert ? h : w;
// chevron lines end 1px outside of width/height
if( chevron ) {
// add 1px to width/height for position calculation only
rw++;
rh++;
}
// 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;
@@ -159,12 +169,6 @@ public class FlatArrowButton
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 )
x--;
if( y + rh >= height && y > 0 )
y--;
// move arrow for round borders
Container parent = getParent();
if( vert && parent instanceof JComponent && FlatUIUtils.hasRoundBorder( (JComponent) parent ) )
@@ -176,7 +180,7 @@ public class FlatArrowButton
: disabledForeground );
g.translate( x, y );
/*debug
debugPaint( g2, vert, w, h );
debugPaint( g2, vert, rw, rh );
debug*/
Shape arrowShape = createArrowShape( direction, chevron, w, h );
if( chevron ) {
@@ -203,7 +207,7 @@ 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 );
g.drawRect( 0, 0, w - 1, h - 1 );
int xy1 = -2;
int xy2 = h + 1;