Image 如何在运行时生成动态图像？

我正在开发一款基于NetBeans平台的纸牌游戏，我正努力让自己的头脑去思考动态图像。为什么是动态的？我希望卡片在运行时根据页面的变化进行调整，例如名称、文本、成本等

我对它的第一个攻击是创建一个组件JPanel，在其中预先放置标签，然后根据卡片值加载文本/图像。这似乎很好，但当我想到一些页面在以后的版本中有不同的外观，这意味着并非所有内容都在同一个位置时，这就变得很麻烦了

因此，我试图在某种模板的基础上了解实现这一点的方法

有什么想法吗

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还有一个后续问题：

最后，我有时间回到这个话题，并且能够找到一种使用的方法

这些图片与我将在应用程序中使用的不太接近，但可以作为概念证明

包javaapplication3

导入java.awt.*；导入java.awt.font.FontRenderContext；进口 java.awt.font.LineBreakMeasurer；导入java.awt.font.texttribute； 导入java.awt.font.TextLayout；导入java.awt.image.buffereImage； 导入java.io.File；导入java.io.IOException；进口 java.net.MalformedURLException；导入java.net.URL；进口 java.text.AttributedCharacterator；进口 java.text.AttributeString；导入java.util.ArrayList；进口 java.util.HashMap；导入java.util.logging.Level；进口 java.util.logging.Logger；导入javax.imageio.imageio

/*****作者Javier A.Ortiz Bultron */公共类DefaultImageManager{

/**
 * @param args the command line arguments
 */
public static void main(String[] args) {
    try {
        // TODO code application logic here
        DefaultImageManager manager = new DefaultImageManager();
        URL url = DefaultImageManager.class.getResource("weather-rain.png");
        manager.getLayers().add(ImageIO.read(url));
        url = DefaultImageManager.class.getResource("weather-sun.png");
        manager.getLayers().add(ImageIO.read(url));
        manager.addText(new Font("Arial", Font.PLAIN, 10), "Many people believe that Vincent van Gogh painted his best works "
                + "during the two-year period he spent in Provence. Here is where he "
                + "painted The Starry Night--which some consider to be his greatest "
                + "work of all. However, as his artistic brilliance reached new "
                + "heights in Provence, his physical and mental health plummeted. ",
                200, 150, new Point(0, 0));
        manager.generate();
    } catch (MalformedURLException ex) {
        Logger.getLogger(DefaultImageManager.class.getName()).log(Level.SEVERE,

无效，例如； }捕捉异常{ Logger.getLoggerDefaultImageManager.class.getName.logLevel.SEVERE， 无效，例如； } } /** *用于创建最终图像的层 */ 私有ArrayList层=新建ArrayList； 私有ArrayList textLayers=新ArrayList

/**
 * @return the layers
 */
public ArrayList<BufferedImage> getLayers() {
    return layers;
}

private Dimension getMaxSize() {
    int width = 0, height = 0;
    for (BufferedImage img : getLayers()) {
        if (img.getWidth() > width) {
            width = img.getWidth();
        }
        if (img.getHeight() > height) {
            height = img.getHeight();
        }
    }
    return new Dimension(width, height);
}

public void addText(Font font, String text, int height, int width, Point location) {
    BufferedImage textImage = new BufferedImage(width, height,
            BufferedImage.TYPE_INT_ARGB);
    HashMap<TextAttribute, Object> map =
            new HashMap<TextAttribute, Object>();
    map.put(TextAttribute.FAMILY, font.getFamily());
    map.put(TextAttribute.SIZE, font.getSize());
    map.put(TextAttribute.FOREGROUND, Color.BLACK);
    AttributedString aString = new AttributedString(text, map);
    AttributedCharacterIterator paragraph = aString.getIterator();
    // index of the first character in the paragraph.
    int paragraphStart = paragraph.getBeginIndex();
    // index of the first character after the end of the paragraph.
    int paragraphEnd = paragraph.getEndIndex();
    Graphics2D graphics = textImage.createGraphics();
    FontRenderContext frc = graphics.getFontRenderContext();
    // The LineBreakMeasurer used to line-break the paragraph.
    LineBreakMeasurer lineMeasurer = new LineBreakMeasurer(paragraph, frc);
    // Set break width to width of Component.
    float breakWidth = width;
    float drawPosY = 0;
    // Set position to the index of the first character in the paragraph.
    lineMeasurer.setPosition(paragraphStart);

    // Get lines until the entire paragraph has been displayed.
    while (lineMeasurer.getPosition() < paragraphEnd) {
        // Retrieve next layout. A cleverer program would also cache
        // these layouts until the component is re-sized.
        TextLayout layout = lineMeasurer.nextLayout(breakWidth);

        // Compute pen x position. If the paragraph is right-to-left we
        // will align the TextLayouts to the right edge of the panel.
        // Note: this won't occur for the English text in this sample.
        // Note: drawPosX is always where the LEFT of the text is placed.
        float drawPosX = layout.isLeftToRight()
                ? 0 : breakWidth - layout.getAdvance();

        // Move y-coordinate by the ascent of the layout.
        drawPosY += layout.getAscent();

        // Draw the TextLayout at (drawPosX, drawPosY).
        layout.draw(graphics, drawPosX, drawPosY);

        // Move y-coordinate in preparation for next layout.
        drawPosY += layout.getDescent() + layout.getLeading();
    }
    getTextLayers().add(textImage);
}

public void generate() throws IOException {
    Dimension size = getMaxSize();
    BufferedImage finalImage = new BufferedImage(size.width, size.height,
            BufferedImage.TYPE_INT_ARGB);
    for (BufferedImage img : getLayers()) {
        finalImage.createGraphics().drawImage(img,
                0, 0, size.width, size.height,
                0, 0, img.getWidth(null),
                img.getHeight(null),
                null);
    }
    for(BufferedImage text: getTextLayers()){
        finalImage.createGraphics().drawImage(text,
                0, 0, text.getWidth(), text.getHeight(),
                0, 0, text.getWidth(null),
                text.getHeight(null),
                null);
    }
    File outputfile = new File("saved.png");
    ImageIO.write(finalImage, "png", outputfile);
}

/**
 * @return the textLayers
 */
public ArrayList<BufferedImage> getTextLayers() {
    return textLayers;
}

/**
 * @param textLayers the textLayers to set
 */
public void setTextLayers(ArrayList<BufferedImage> textLayers) {
    this.textLayers = textLayers;
} }

它仍然需要一些改进，特别是在文本的位置上，但它是有效的。我想我可以实现一种xml格式来存储所有这些信息，因此很容易配置。在下面的例子中，太阳被画在雨的上面，而文本位于所有这些之上。对于我的应用程序，每一层将一起构建我想要的页面

以下是我使用的图像：

最后的结果是：

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你可以发布一些图片来澄清吗？没有那么清楚：我现在无法从工作中获取这些图片，但是你可以到这里的参考资料中获取一个想法：！我的游戏就是基于这一点。链接不起作用…你可以画一个草图，你的确切意思是什么…或者试着提出一个详细的问题，请…出于某种原因，感叹号没有作为链接的一部分。我现在正在处理它。。。