在Windows上,可以按Alt+PrintScreen将当前窗口复制到剪贴板中。
如果你能使用火狐,我建议你看看
ScrapBook+
.
如果您需要一个自动化的过程,请尝试
SWT
. 这个库有一个浏览器组件,您可以使用它加载一些HTML,显示它并将结果复制到一个图像中。问题是要知道浏览器何时完成对文档的呈现。这段代码应该可以让您开始:
public HTML2Png ()
{
display = new Display();
shell = new Shell(display);
shell.setLayout(new FillLayout());
shell.setSize(920, 700);
shell.setLocation(10, 20);
browser = new Browser(shell, SWT.NONE);
browser.addProgressListener(new ProgressListener() {
public void changed (ProgressEvent progressevent)
{
}
public void completed (ProgressEvent progressevent)
{
boolean result = browser.execute("window.status=document.bgColor;");
if (!result)
{
System.err.println("Executing script failed!");
return;
}
System.out.println("Loading completed.");
completed.set(true);
}
});
browser.addPaintListener(new PaintListener() {
public void paintControl (PaintEvent paintevent)
{
System.out.println(paintevent);
}
});
}
void createPNG (String url, String pngFile)
{
System.out.println("Working on "+url);
completed.set(false);
shell.open();
browser.setText("<html><body bgcolor=\"#FF00FF\"></body></html>");
GC source = new GC (shell);
int testColor = 0xFF00FF00;
Image image = new Image (display, new Rectangle(0, 0, 1, 1));
int i = 100;
while (display.readAndDispatch() && i > 0)
{
source.copyArea(image, 0, 0);
if (image.getImageData().getPixel(0,0) == testColor)
break;
sleep();
i --;
}
if (i == 0)
throw new RuntimeException("Loading took too long");
completed.set(false);
browser.setUrl(url);
i = 50;
while (!shell.isDisposed() && i > 0)
{
if (completed.get())
{
source.copyArea(image, 0, 0);
if (image.getImageData().getPixel(0,0) != testColor)
{
image = new Image (display, browser.getClientArea());
source.copyArea(image, 0, 0);
//if (checkImage(image, testColor))
break;
}
i --;
}
while (display.readAndDispatch())
;
sleep();
}
if (i == 0)
throw new RuntimeException ("Loading timed out");
ImageLoader io = new ImageLoader ();
io.data = new ImageData[] { image.getImageData() };
File f = new File (pngFile);
io.save (f.getAbsolutePath(), SWT.IMAGE_PNG);
System.out.println("Saved image "+f+", "+f.length()+" bytes");
}