[英]PPTX to PNG color rendering – Apache POI
我正在使用POI庫將pptx幻燈片轉換為png但是它無法正確渲染幻燈片的顏色,例如,它不會渲染綠松石,而是呈現灰色。 我試圖將pptx幻燈片轉換為svg,但遇到了同樣的問題,所以我想知道它是否與XMLSlideShow類或XSLFSlide類有關。 任何幫助將不勝感激!
碼:
String file = "C:\\Users\\ABC\\demo1.pptx";
XMLSlideShow ppt = null;
ppt = new XMLSlideShow(OPCPackage.open(new File(file)));
Dimension pgsize = ppt.getPageSize();
float scale = 1;
int width = (int) (pgsize.width * scale);
int height = (int) (pgsize.height * scale);
XSLFSlide[] slide = ppt.getSlides();
for (int i = 0; i < slide.length; i++) {
String title = slide[i].getTitle();
BufferedImage img = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
Graphics2D graphics = img.createGraphics();
graphics.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
graphics.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
graphics.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC);
graphics.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS, RenderingHints.VALUE_FRACTIONALMETRICS_ON);
graphics.setColor(Color.white);
graphics.clearRect(0, 0, width, height);
graphics.scale(scale, scale);
slide[i].draw(graphics);
int sep = file.lastIndexOf(".");
String fname = file.substring(0, sep == -1 ? file.length() : sep) + "-" + (i + 1) +".png";
FileOutputStream out = new FileOutputStream(fname);
ImageIO.write(img, "png", out);
out.close();
}
這是apache POI庫的問題。 請使用可能解決您問題的舊版本,即3.7。
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