X-Git-Url: http://gitweb.fperrin.net/?p=GpsPrune.git;a=blobdiff_plain;f=src%2Ftim%2Fprune%2Fsave%2FImagePreviewPanel.java;fp=src%2Ftim%2Fprune%2Fsave%2FImagePreviewPanel.java;h=6f4ac889ad144731bb82d6485e8e5dc7721766d5;hp=0000000000000000000000000000000000000000;hb=ce6f2161b8596f7018d6a76bff79bc9e571f35fd;hpb=2d8cb72e84d5cc1089ce77baf1e34ea3ea2f8465

diff --git a/src/tim/prune/save/ImagePreviewPanel.java b/src/tim/prune/save/ImagePreviewPanel.java
new file mode 100644
index 0000000..6f4ac88
--- /dev/null
+++ b/src/tim/prune/save/ImagePreviewPanel.java
@@ -0,0 +1,98 @@
+package tim.prune.save;
+
+import java.awt.Color;
+import java.awt.Dimension;
+import java.awt.Graphics;
+
+import javax.swing.JPanel;
+
+import tim.prune.I18nManager;
+
+/**
+ * GUI component to display an image preview for the POV export
+ * and for the image export
+ */
+public class ImagePreviewPanel extends JPanel
+{
+	/** Base image */
+	private GroutedImage _baseImage = null;
+	/** Loading flag */
+	private boolean _loading = false;
+
+	/** String to show before image is loaded */
+	private static final String LOADING_STRING = I18nManager.getText("details.photo.loading") + " ...";
+	/** Colour to use if there aren't any tiles at all (same as colour of POV export without image) */
+	private static final Color EMPTY_IMAGE_COLOUR = new Color(0.5f, 0.75f, 0.8f);
+
+
+	/** Set the base image */
+	public void setImage(GroutedImage inImage)
+	{
+		_baseImage = inImage;
+		_loading = false;
+		repaint();
+	}
+
+	/** Inform that a load is starting */
+	public void startLoading()
+	{
+		_baseImage = null;
+		_loading = true;
+		repaint();
+	}
+
+	/** Get minimum size */
+	public Dimension getMinimumSize() {
+		return new Dimension(200, 200);
+	}
+	/** Preferred size */
+	public Dimension getPreferredSize() {
+		return getMinimumSize();
+	}
+
+	/**
+	 * Override paint method
+	 * @see javax.swing.JComponent#paint(java.awt.Graphics)
+	 */
+	public void paint(Graphics inG)
+	{
+		super.paint(inG);
+		if (_loading)
+		{
+			inG.setColor(Color.BLACK);
+			inG.drawString(LOADING_STRING, 10, 30);
+		}
+		else if (_baseImage != null)
+		{
+			final int width = getWidth();
+			final int height = getHeight();
+			final int previewSize = Math.min(width, height);
+			if (previewSize > 1)
+			{
+				if (_baseImage.isValid())
+				{
+					inG.drawImage(_baseImage.getImage(),
+						(width-previewSize)/2, (height-previewSize)/2, previewSize, previewSize, this);
+				}
+				else
+				{
+					// No content found at all
+					inG.setColor(EMPTY_IMAGE_COLOUR);
+					inG.fillRect((width-previewSize)/2, (height-previewSize)/2, previewSize, previewSize);
+				}
+				// draw frame around it to make it more obvious
+				inG.setColor(Color.BLACK);
+				inG.drawRect((width-previewSize)/2, (height-previewSize)/2, previewSize-1, previewSize-1);
+			}
+		}
+	}
+
+	/**
+	 * @return true if there is an image to use and it contains map tiles
+	 */
+	public boolean getTilesFound()
+	{
+		return _baseImage != null && _baseImage.isValid() && _baseImage.getImageSize() > 1
+			&& _baseImage.getNumTilesUsed() > 0;
+	}
+}