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SVGUtils: support creating window images from SVG files that are not 16x16 (issue #196)

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Karl Tauber
2020-10-26 15:09:44 +01:00
parent 4c141fe47c
commit 6f8a7471c2
1 changed files with 70 additions and 16 deletions
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86
flatlaf-extras/src/main/java/com/formdev/flatlaf/extras/SVGUtils.java
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@@ -30,46 +30,84 @@ import com.kitfox.svg.SVGDiagram;
import com.kitfox.svg.SVGException;
/**
* Utility methods for SVG.
*
* @author Karl Tauber
*/
public class SVGUtils
{
/**
* Creates from the given SVG a list of icon images with different sizes that
* can be used for windows headers. The SVG should have a size of 16 x 16.
* can be used for windows headers. The SVG should have a size of 16x16,
* otherwise it is scaled.
*
* @param svgName the name of the SVG resource (a '/'-separated path)
* @return list of icon images with different sizes (16x16, 24x24, 32x32, 48x48 and 64x64)
* @throws RuntimeException if failed to load or render SVG file
* @see JWindow#setIconImages(List)
*/
public static List<Image> createWindowIconImages( String svgName ) {
SVGDiagram diagram = loadSVG( svgName );
return Arrays.asList(
svg2image( svgName, 1f ), // 16 x 16
svg2image( svgName, 1.5f ), // 24 x 24
svg2image( svgName, 2f ), // 32 x 32
svg2image( svgName, 3f ), // 48 x 48
svg2image( svgName, 4f ) // 64 x 64
svg2image( diagram, 16, 16 ),
svg2image( diagram, 24, 24 ),
svg2image( diagram, 32, 32 ),
svg2image( diagram, 48, 48 ),
svg2image( diagram, 64, 64 )
);
}
/**
* Creates a buffered image and renders the given SVG into it.
*
* @param svgName the name of the SVG resource (a '/'-separated path)
* @param width the width of the image
* @param height the height of the image
* @return the image
* @throws RuntimeException if failed to load or render SVG file
*/
public static BufferedImage svg2image( String svgName, int width, int height ) {
return svg2image( loadSVG( svgName ), width, height );
}
/**
* Creates a buffered image and renders the given SVG into it.
*
* @param svgName the name of the SVG resource (a '/'-separated path)
* @param scaleFactor the amount by which the SVG size is scaled
* @return the image
* @throws RuntimeException if failed to load or render SVG file
*/
public static BufferedImage svg2image( String svgName, float scaleFactor ) {
try {
URL url = SVGUtils.class.getResource( svgName );
SVGDiagram diagram = SVGCache.getSVGUniverse().getDiagram( url.toURI() );
SVGDiagram diagram = loadSVG( svgName );
int width = (int) (diagram.getWidth() * scaleFactor);
int height = (int) (diagram.getHeight() * scaleFactor);
return svg2image( diagram, width, height );
}
BufferedImage image = new BufferedImage(
(int) (diagram.getWidth() * scaleFactor),
(int) (diagram.getHeight() * scaleFactor),
BufferedImage.TYPE_INT_ARGB );
/**
* Creates a buffered image and renders the given SVGDiagram into it.
*
* @param diagram the SVG diagram
* @param width the width of the image
* @param height the height of the image
* @return the image
* @throws RuntimeException if failed to render SVG file
*/
public static BufferedImage svg2image( SVGDiagram diagram, int width, int height ) {
try {
BufferedImage image = new BufferedImage( width, height, BufferedImage.TYPE_INT_ARGB );
Graphics2D g = image.createGraphics();
try {
g.setRenderingHint( RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON );
g.setRenderingHint( RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR );
if( scaleFactor != 1f )
g.scale( scaleFactor, scaleFactor );
double sx = width / diagram.getWidth();
double sy = height / diagram.getHeight();
if( sx != 1 || sy != 1 )
g.scale( sx, sy );
diagram.setIgnoringClipHeuristic( true );
@@ -79,7 +117,23 @@ public class SVGUtils
}
return image;
} catch( URISyntaxException | SVGException ex ) {
} catch( SVGException ex ) {
throw new RuntimeException( ex );
}
}
/**
* Loads a SVG file.
*
* @param svgName the name of the SVG resource (a '/'-separated path)
* @return the SVG diagram
* @throws RuntimeException if failed to load SVG file
*/
private static SVGDiagram loadSVG( String svgName ) {
try {
URL url = SVGUtils.class.getResource( svgName );
return SVGCache.getSVGUniverse().getDiagram( url.toURI() );
} catch( URISyntaxException ex ) {
throw new RuntimeException( ex );
}
}