+/*
+ * Jalview - A Sequence Alignment Editor and Viewer ($$Version-Rel$$)
+ * Copyright (C) $$Year-Rel$$ The Jalview Authors
+ *
+ * This file is part of Jalview.
+ *
+ * Jalview is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 3
+ * of the License, or (at your option) any later version.
+ *
+ * Jalview is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Jalview. If not, see <http://www.gnu.org/licenses/>.
+ * The Jalview Authors are detailed in the 'AUTHORS' file.
+ */
package jalview.renderer;
import java.awt.FontMetrics;
import java.awt.Image;
import java.awt.image.ImageObserver;
+/**
+ * semi-insulated interface for rendering a faded image whilst a calculation is
+ * in progress on annotation panel. Will need to remove java.awt dependencies
+ * for Android/etc
+ *
+ * @author jprocter
+ *
+ */
public interface AwtRenderPanelI extends ImageObserver
{
/**
- * old image used when data is currently being calculated and cannot be rendered
+ * old image used when data is currently being calculated and cannot be
+ * rendered
*/
Image getFadedImage();
/**
* FontMetrics to use for rendering into Panel
+ *
* @return
*/
FontMetrics getFontMetrics();
*/
int getFadedImageWidth();
+ /**
+ * height of visible area on to the image - used to draw only what is visible.
+ *
+ * @return [start, end of visible region]
+ */
+ int[] getVisibleVRange();
+
}