SVG am示例？

该存储库包含示例代码。如果要使用最新版本，则涉及一些步骤：

1. 安装Apache Maven。

2. 将存储库克隆到某个位置：

   mkdir -p $HOME/dev/java/

   cd $HOME/dev/java
   git clone https://github.com/blackears/svgSalamander
   

3. 更新

   pom.xml

   ：

   cd svgSalamander/svg-core

   vi pom.xml

4. 更改

   source

   ，

   target

   和JDK版本号：

   <maven.compiler.source>1.7</maven.compiler.source>

   1.7

   1.7

5. 保存

   pom.xml

   。

6. 使用Maven生成JAR文件：

   mvn package

7. 复制

   target/svgSalamander-1.1.2.jar

   （确保必须更改版本号）到程序的库目录（例如

   libs

   ）。

如果您的程序使用Gradle进行构建，请更新依赖项以使用本地JAR文件：

dependencies {  // SVG  implementation fileTree(include: ['**public class SvgRasterizer {  public final static Map<Object, Object> RENDERING_HINTS = Map.of(      KEY_ANTIALIASING,      VALUE_ANTIALIAS_ON,      KEY_ALPHA_INTERPOLATION,      VALUE_ALPHA_INTERPOLATION_QUALITY,      KEY_COLOR_RENDERING,      VALUE_COLOR_RENDER_QUALITY,      KEY_DITHERING,      VALUE_DITHER_DISABLE,      KEY_FRACTIONALMETRICS,      VALUE_FRACTIONALMETRICS_ON,      KEY_INTERPOLATION,      VALUE_INTERPOLATION_BICUBIC,      KEY_RENDERING,      VALUE_RENDER_QUALITY,      KEY_STROKE_CONTROL,      VALUE_STROKE_PURE,      KEY_TEXT_ANTIALIASING,      VALUE_TEXT_ANTIALIAS_ON  );  private final static SVGUniverse sRenderer = new SVGUniverse();    public Image rasterize( final String path, final Dimension dstDim )      throws SVGException {    final var diagram = loadDiagram( path );    final var wDiagram = diagram.getWidth();    final var hDiagram = diagram.getHeight();    final var srcDim = new Dimension( (int) wDiagram, (int) hDiagram );    final var scaled = fit( srcDim, dstDim );    final var wScaled = (int) scaled.getWidth();    final var hScaled = (int) scaled.getHeight();    final var image = new BufferedImage( wScaled, hScaled, TYPE_INT_ARGB );    final var g = image.createGraphics();    g.setRenderingHints( RENDERING_HINTS );    final var transform = g.getTransform();    transform.setToScale( wScaled / wDiagram, hScaled / hDiagram );    g.setTransform( transform );    diagram.render( g );    g.dispose();    return image;  }    private URL getResourceUrl( final String path ) {    return SvgRasterizer.class.getResource( path );  }    private SVGDiagram loadDiagram( final String path ) {    final var url = getResourceUrl( path );    final var uri = sRenderer.loadSVG( url );    final var diagram = sRenderer.getDiagram( uri );    return applySettings( diagram );  }    private SVGDiagram applySettings( final SVGDiagram diagram ) {    diagram.setIgnoringClipHeuristic( true );    return diagram;  }    private Dimension fit( final Dimension src, final Dimension dst ) {    final var srcWidth = src.getWidth();    final var srcHeight = src.getHeight();    // Determine the ratio that will have the best fit.    final var ratio = Math.min(        dst.getWidth() / srcWidth, dst.getHeight() / srcHeight    );    // Scale both dimensions with respect to the best fit ratio.    return new Dimension( (int) (srcWidth * ratio), (int) (srcHeight * ratio) );  }}

使用

SvgRasterizer

final var rasterizer = new SvgRasterizer();final var image = rasterizer.rasterize( "/images/icon.svg", new Dimension( 200, 200 ) );

该图像可以轻松添加到Swing组件中。例如，以下

JComponent

import javax.swing.*;import java.awt.*;public class ImageComponent extends JComponent {    private Image mImage;  ImageComponent( final Image image ) {    mImage = image;  }  @Override  public Dimension getPreferredSize() {    // Race-condition guard.    final var image = mImage;    return new Dimension(        image.getWidth( null ), image.getHeight( null )    );  }  @Override  protected void paintComponent( final Graphics graphics ) {    super.paintComponent( graphics );    final var g = (Graphics2D) graphics.create();    g.drawImage( mImage, 0, 0, this );  }    public void redraw( final Image image ) {    mImage = image;    repaint();  }}