com.formdev.flatlaf.extras.FlatSVGUtils Maven / Gradle / Ivy
/*
* Copyright 2020 FormDev Software GmbH
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.formdev.flatlaf.extras;
import java.awt.Dimension;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.RenderingHints;
import java.awt.image.BufferedImage;
import java.net.URISyntaxException;
import java.net.URL;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import javax.swing.JWindow;
import com.formdev.flatlaf.util.MultiResolutionImageSupport;
import com.formdev.flatlaf.util.SystemInfo;
import com.kitfox.svg.SVGCache;
import com.kitfox.svg.SVGDiagram;
import com.kitfox.svg.SVGException;
/**
* Utility methods for SVG.
*
* @author Karl Tauber
*/
public class FlatSVGUtils
{
/**
* 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 16x16,
* otherwise it is scaled.
*
* If running on Windows in Java 9 or later and multi-resolution image support is available,
* then a single multi-resolution image is returned that creates images on demand
* for requested sizes from SVG.
* This has the advantage that only images for used sizes are created.
* Also if unusual sizes are requested (e.g. 18x18), then they are created from SVG.
*
* @param svgName the name of the SVG resource (a '/'-separated path)
* @return list of icon images with different sizes (16x16, 20x20, 24x24, 28x28, 32x32, 48x48 and 64x64)
* @throws RuntimeException if failed to load or render SVG file
* @see JWindow#setIconImages(List)
*/
public static List createWindowIconImages( String svgName ) {
SVGDiagram diagram = loadSVG( svgName );
if( SystemInfo.isWindows && MultiResolutionImageSupport.isAvailable() ) {
// use a multi-resolution image that creates images on demand for requested sizes
return Collections.singletonList( MultiResolutionImageSupport.create( 0,
new Dimension[] {
// Listing all these sizes here is actually not necessary because
// any size is created on demand when
// MultiResolutionImage.getResolutionVariant(double destImageWidth, double destImageHeight)
// is invoked.
// This sizes are only used by MultiResolutionImage.getResolutionVariants().
new Dimension( 16, 16 ), // 100%
new Dimension( 20, 20 ), // 125%
new Dimension( 24, 24 ), // 150%
new Dimension( 28, 28 ), // 175%
new Dimension( 32, 32 ), // 200%
new Dimension( 48, 48 ), // 300%
new Dimension( 64, 64 ), // 400%
}, dim -> {
return svg2image( diagram, dim.width, dim.height );
} ) );
} else {
return Arrays.asList(
svg2image( diagram, 16, 16 ), // 100%
svg2image( diagram, 20, 20 ), // 125%
svg2image( diagram, 24, 24 ), // 150%
svg2image( diagram, 28, 28 ), // 175%
svg2image( diagram, 32, 32 ), // 200%
svg2image( diagram, 48, 48 ), // 300%
svg2image( diagram, 64, 64 ) // 400%
);
}
}
/**
* 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 ) {
SVGDiagram diagram = loadSVG( svgName );
int width = (int) (diagram.getWidth() * scaleFactor);
int height = (int) (diagram.getHeight() * scaleFactor);
return svg2image( diagram, width, height );
}
/**
* 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 );
double sx = width / diagram.getWidth();
double sy = height / diagram.getHeight();
if( sx != 1 || sy != 1 )
g.scale( sx, sy );
diagram.setIgnoringClipHeuristic( true );
diagram.render( g );
} finally {
g.dispose();
}
return image;
} 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 = FlatSVGUtils.class.getResource( svgName );
return SVGCache.getSVGUniverse().getDiagram( url.toURI() );
} catch( URISyntaxException ex ) {
throw new RuntimeException( ex );
}
}
}