1 files changed, 59 insertions, 0 deletions
diff --git a/platform/java/example/PageCanvas.java b/platform/java/example/PageCanvas.java
new file mode 100644
index 00000000..9de1abdb
--- /dev/null
+++ b/platform/java/example/PageCanvas.java
@@ -0,0 +1,59 @@
+package example;
+
+import com.artifex.mupdf.fitz.*;
+import java.awt.*;
+import java.awt.image.*;
+
+public class PageCanvas extends java.awt.Canvas
+{
+	protected Page page;
+	protected BufferedImage image;
+
+	public static BufferedImage imageFromPixmap(Pixmap pixmap) {
+		int w = pixmap.getWidth();
+		int h = pixmap.getHeight();
+		BufferedImage image = new BufferedImage(w, h, BufferedImage.TYPE_INT_ARGB);
+		image.setRGB(0, 0, w, h, pixmap.getPixels(), 0, w);
+		return image;
+	}
+
+	public static BufferedImage imageFromPageWithDevice(Page page, Matrix ctm) {
+		Rect bbox = page.getBounds();
+		Pixmap pixmap = new Pixmap(ColorSpace.DeviceBGR, bbox);
+		pixmap.clear(255);
+		DrawDevice dev = new DrawDevice(pixmap);
+		page.run(dev, new Matrix());
+		dev.destroy();
+		BufferedImage image = imageFromPixmap(pixmap);
+		pixmap.destroy();
+		return image;
+	}
+
+	public static BufferedImage imageFromPage(Page page, Matrix ctm) {
+		Pixmap pixmap = page.toPixmap(ctm, ColorSpace.DeviceBGR);
+		BufferedImage image = imageFromPixmap(pixmap);
+		pixmap.destroy();
+		return image;
+	}
+
+	public PageCanvas(Page page_) {
+		this.page = page_;
+		image = imageFromPage(page, new Matrix());
+	}
+
+	public Dimension getPreferredSize() {
+		return new Dimension(image.getWidth(), image.getHeight());
+	}
+
+	public Dimension getMinimumSize() {
+		return getPreferredSize();
+	}
+
+	public Dimension getMaximumSize() {
+		return getPreferredSize();
+	}
+
+	public void paint(Graphics g) {
+		g.drawImage(image, 0, 0, null);
+	}
+}