如何将一个WMF文件转换为PNG/BMP/JPG格式,并设置输出分辨率?
例如:将WMF文件转换为2000x2000像素的PNG文件。
谢谢。
如何将一个WMF文件转换为PNG/BMP/JPG格式,并设置输出分辨率?
例如:将WMF文件转换为2000x2000像素的PNG文件。
谢谢。
WMF >> SVG >> JPG
这里有一篇关于它的讨论:http://www.coderanch.com/t/422868/java/java/converting-WMF-Windows-Meta-File
unoconv
的工具可能更好,还有来自Mono的libgdiplus
也可能更好。 - mmgpPPTX2PNG.main()
。stdin
访问,您需要在之前重定向System.in
。/* the file content */
InputStream is = ...;
/* Save and set System.in */
InputStream oldIn = System.in;
try {
System.setIn(is);
String[] args = {
"-format", "png", // png,gif,jpg,svg or null for test
"-outdir", new File("out/").getCanonicalPath(),
"-outfile", "export.png",
"-fixside", "long",
"-scale", "800",
"-ignoreParse",
"stdin"
};
PPTX2PNG.main(args);
} finally {
System.setIn(oldIn);
}
File f = samples.getFile("santa.wmf");
try (FileInputStream fis = new FileInputStream(f)) {
// for WMF
HwmfPicture wmf = new HwmfPicture(fis);
// for EMF / EMF+
HemfPicture emf = new HemfPicture(fis);
Dimension dim = wmf.getSize();
int width = Units.pointsToPixel(dim.getWidth());
// keep aspect ratio for height
int height = Units.pointsToPixel(dim.getHeight());
double max = Math.max(width, height);
if (max > 1500) {
width *= 1500/max;
height *= 1500/max;
}
BufferedImage bufImg = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
Graphics2D g = bufImg.createGraphics();
g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
g.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC);
g.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS, RenderingHints.VALUE_FRACTIONALMETRICS_ON);
wmf.draw(g, new Rectangle2D.Double(0,0,width,height));
g.dispose();
ImageIO.write(bufImg, "PNG", new File("bla.png"));
}