/**
* Create the image for the specified AnnotationStamp
*
* @param stamp the stamp to render
* @param height the height of the stamp image
* @param parser the PDFParser to use to convert
* @since 2.1.19
*/
public BufferedImage getStampImage(AnnotationStamp stamp, int height, PDFParser parser) {
float rw = stamp.getRecommendedWidth();
float rh = stamp.getRecommendedHeight();
PDFPage page = new PDFPage((int) rw, (int) rh);
stamp.setPage(page);
stamp.setRectangle(0, 0, page.getWidth(), page.getHeight());
PagePainter painter = parser.getPagePainter(page);
painter.setBackground(null);
float dpi = height / rh * 72;
return painter.getImage(dpi, PDFParser.RGBA);
}
void setPage(PDFPage page, boolean forcevalidate) {
currentPage = page;
if (leftPage != null && leftPage == page) {
currentPagePanel = leftPagePanel;
if (!forcevalidate) {
return;
}
}
if (rightPage != null && rightPage == page) {
currentPagePanel = rightPagePanel;
if (!forcevalidate) {
return;
}
}
pagenumber = page.getPageNumber() - 1;
int pagecount = pdf.getNumberOfPages();
boolean isOdd = (pagenumber % 2) == 0; // even pages have odd numbers :)
boolean onRight = handedness == ODD_PAGES_ON_RIGHT ? isOdd : !isOdd;
if (onRight) {
setLeftPage((pagenumber > 0) ? pdf.getPage(pagenumber - 1) : null);
setRightPage(page);
currentPagePanel = rightPagePanel;
} else {
setLeftPage(page);
setRightPage((pagenumber < (pagecount - 1)) ? pdf.getPage(pagenumber + 1) : null);
currentPagePanel = leftPagePanel;
}
revalidate();
repaint();
}
public void setPage(PDFPage page, double x, double y, double zoom) {
if (page.getPDF() != pdf) {
throw new IllegalArgumentException("Page is from a different PDF");
}
setZoom((float) zoom);
Rectangle2D crop = PagePanel.getFullPageView(page);
ensureVisible(page, crop.getMinX() + x, crop.getMaxY() - y, false);
}
public int getPreviousSelectablePageIndex(PDFPage page) {
if (page != null) {
List<PDFPage> pages = page.getPDF().getPages();
int ix = pages.indexOf(page);
if (ix > 0) {
return Math.max(0, ix - (((ix & 1) == 0) == (handedness == ODD_PAGES_ON_LEFT) ? 1 : 2));
}
}
return -1;
}
public int getNextSelectablePageIndex(PDFPage page) {
if (page != null) {
List<PDFPage> pages = page.getPDF().getPages();
int ix = pages.indexOf(page);
if (ix >= 0 && ix < pages.size() - 1) {
return Math.min(
pages.size() - 1, ix + (((ix & 1) == 0) == (handedness == ODD_PAGES_ON_LEFT) ? 2 : 1));
}
}
return -1;
}
public float getTargetZoom(int zoommode, PDFPage page) {
float outzoom = zoom;
if (page != null) {
int pagenumber = page.getPageNumber() - 1;
int pagecount = pdf.getNumberOfPages();
boolean isOdd = (pagenumber % 2) == 0; // even pages have odd numbers :)
boolean onRight = handedness == ODD_PAGES_ON_RIGHT ? isOdd : !isOdd;
PDFPage leftPage, rightPage;
Rectangle2D.Float leftPageRect = null, rightPageRect = null;
if (onRight) {
leftPage = (pagenumber > 0) ? pdf.getPage(pagenumber - 1) : null;
rightPage = page;
} else {
leftPage = page;
rightPage = (pagenumber < (pagecount - 1)) ? pdf.getPage(pagenumber + 1) : null;
}
if (leftPage != null) {
leftPageRect = (Rectangle2D.Float) PagePanel.getFullPageView(leftPage);
}
if (rightPage != null) {
rightPageRect = (Rectangle2D.Float) PagePanel.getFullPageView(rightPage);
}
if (leftPageRect == null) {
leftPageRect = (Rectangle2D.Float) rightPageRect.clone();
}
if (rightPageRect == null) {
rightPageRect = (Rectangle2D.Float) leftPageRect.clone();
}
JScrollBar hsb = scrollPane.getHorizontalScrollBar();
JScrollBar vsb = scrollPane.getVerticalScrollBar();
float prw = leftPageRect.width + rightPageRect.width;
float prh = Math.max(leftPageRect.height, rightPageRect.height);
Dimension size = getSize();
float w =
(float) Math.ceil(prw * Util.getScreenResolution(this) / 72)
+ (margin * 4)
+ interpagemargin
+ vsb.getWidth();
float h =
(float) Math.ceil(prh * Util.getScreenResolution(this) / 72)
+ (margin * 2)
+ hsb.getHeight();
switch (zoommode) {
case ZOOM_FITWIDTH:
outzoom = (float) size.width / w;
break;
case ZOOM_FITHEIGHT:
outzoom = (float) size.height / h;
break;
case ZOOM_FIT:
float zw = (float) size.width / w;
float zh = (float) size.height / h;
outzoom = zw < zh ? zw : zh;
break;
default:
outzoom = zoom == 0 ? 1 : zoom;
}
}
return outzoom;
}
