/** Clears fixed pixels height caches. */
protected void updateCachedHeightData() {
cachedHeight0 = null;
cachedHeight1 = null;
getFixedPixelsHeight(true);
getFixedPixelsHeight(false);
}
/**
* Constructs new NinePatchIcon using the specified nine-patch image.
*
* @param bufferedImage nine-patch image
* @param component component atop of which icon will be stretched
* @param parsePatches whether should parse image patches or not
*/
protected NinePatchIcon(
final BufferedImage bufferedImage, final Component component, final boolean parsePatches) {
super();
if (parsePatches) {
// Incorrect image
if (bufferedImage.getWidth() < 3 || bufferedImage.getHeight() < 3) {
throw new IllegalArgumentException("Buffered image must be atleast 3x3 pixels size");
}
// Componet for which this icon will be streched
this.component = component;
// Creating actual image in a compatible format
final int w = bufferedImage.getWidth() - 2;
final int h = bufferedImage.getHeight() - 2;
rawImage = ImageUtils.createCompatibleImage(bufferedImage, w, h);
final Graphics2D g2d = rawImage.createGraphics();
g2d.drawImage(
bufferedImage,
0,
0,
w,
h,
1,
1,
bufferedImage.getWidth() - 1,
bufferedImage.getHeight() - 1,
null);
g2d.dispose();
// Parsing stretch variables
horizontalStretch =
NinePatchUtils.parseIntervals(bufferedImage, NinePatchIntervalType.horizontalStretch);
verticalStretch =
NinePatchUtils.parseIntervals(bufferedImage, NinePatchIntervalType.verticalStretch);
// Incorrect image
if (!((horizontalStretch.size() > 1
|| horizontalStretch.size() == 1 && !horizontalStretch.get(0).isPixel())
&& (verticalStretch.size() > 1
|| verticalStretch.size() == 1 && !verticalStretch.get(0).isPixel()))) {
throw new IllegalArgumentException("There must be stretch constraints specified on image");
}
// Parsing content margins
final List<NinePatchInterval> vc =
NinePatchUtils.parseIntervals(bufferedImage, NinePatchIntervalType.verticalContent);
final List<NinePatchInterval> hc =
NinePatchUtils.parseIntervals(bufferedImage, NinePatchIntervalType.horizontalContent);
final int top = vc.size() == 0 ? 0 : vc.get(0).getStart();
final int bottom = vc.size() == 0 ? 0 : rawImage.getHeight() - vc.get(0).getEnd() - 1;
final int left = hc.size() == 0 ? 0 : hc.get(0).getStart();
final int right = hc.size() == 0 ? 0 : rawImage.getWidth() - hc.get(0).getEnd() - 1;
margin = new Insets(top, left, bottom, right);
// Forcing cached data calculation on initialization
getFixedPixelsWidth(true);
getFixedPixelsWidth(false);
getFixedPixelsHeight(true);
getFixedPixelsHeight(false);
} else {
// Componet for which this icon will be streched
this.component = component;
// Actual image
this.rawImage = bufferedImage;
// Stretch variables
horizontalStretch = new ArrayList<NinePatchInterval>();
verticalStretch = new ArrayList<NinePatchInterval>();
}
}