將包含自定義頂點組件的JGraphX圖導出爲圖像

Question

我有一個圖表，它會覆蓋中的createComponents以將每個頂點渲染爲JTable。雖然我預計mxCellRenderer.create*Document無法處理它，我希望保存到的圖像與

BufferedImage image = mxCellRenderer.createBufferedImage(graphComponent.getGraph(), null, 1.0, null, graphComponent.isAntiAlias(), null); 
ImageIO.write(image, "PNG", new File("C:\\Temp\\graph.png")); 

會（當然，現在我看它，它顯然不能：它只是變得mxGraph作爲輸入，而不是mxGraphComponent！）。有沒有辦法將圖形保存爲包含自定義渲染器的圖像？

Answer 1

這個工作對我的用例

JViewport viewport = graphComponent.getViewport(); 
Color savedBackground = viewport.getBackground(); 
viewport.setBackground(new Color(0, 0, 0, 0)); 
try { 
    Dimension size = viewport.getPreferredSize(); 
    BufferedImage image = new BufferedImage(size.width, size.height, BufferedImage.TYPE_INT_ARGB); 
    Graphics2D g = image.createGraphics(); 
    viewport.printAll(g); 
    g.dispose(); 
    try { 
     ImageIO.write(image, "png", target.getFile()); 
    } catch (IOException e1) { 
     NotificationsUtil.showError("Failed to save image", e1); 
    } 
} finally { 
    viewport.setBackground(savedBackground); 
}