| | import org.xhtmlrenderer.swing.ImageResourceLoader; |
| | |
| | +import javax.imageio.ImageIO; |
| | import java.net.URI; |
| | -import java.nio.file.Files; |
| | +import java.net.URL; |
| | import java.nio.file.Paths; |
| | |
| | +import static com.scrivenvar.StatusBarNotifier.alert; |
| | import static com.scrivenvar.preview.SvgRasterizer.BROKEN_IMAGE_PLACEHOLDER; |
| | import static com.scrivenvar.util.ProtocolResolver.getProtocol; |
| | +import static java.lang.String.valueOf; |
| | +import static java.nio.file.Files.exists; |
| | import static org.xhtmlrenderer.swing.AWTFSImage.createImage; |
| | |
 |
| | * Placeholder that's displayed when image cannot be found. |
| | */ |
| | - private static final FSImage BROKEN_IMAGE = createImage( |
| | - BROKEN_IMAGE_PLACEHOLDER ); |
| | + private FSImage mBrokenImage; |
| | |
| | private final IntegerProperty mWidthProperty = new SimpleIntegerProperty(); |
|
| | assert width >= 0; |
| | assert height >= 0; |
| | - |
| | - boolean exists = true; |
| | |
| | try { |
| | final var protocol = getProtocol( uri ); |
| | + final ImageResource imageResource; |
| | |
| | - if( protocol.isFile() ) { |
| | - exists = Files.exists( Paths.get( new URI( uri ) ) ); |
| | + if( protocol.isFile() && exists( Paths.get( new URI( uri ) ) ) ) { |
| | + imageResource = super.get( uri, width, height ); |
| | + } |
| | + else if( protocol.isHttp() ) { |
| | + // FlyingSaucer will silently swallow any images that fail to load. |
| | + // Consequently, the following lines load the resource over HTTP and |
| | + // translate errors into a broken image icon. |
| | + final var url = new URL( uri ); |
| | + final var image = ImageIO.read( url ); |
| | + imageResource = new ImageResource( uri, createImage( image ) ); |
| | + } |
| | + else { |
| | + // Caught below to return a broken image; exception is swallowed. |
| | + throw new UnsupportedOperationException( valueOf( protocol ) ); |
| | } |
| | + |
| | + return scale( imageResource ); |
| | } catch( final Exception e ) { |
| | - exists = false; |
| | + alert( e ); |
| | + return new ImageResource( uri, getBrokenImage() ); |
| | } |
| | - |
| | - return exists |
| | - ? scale( uri, width, height ) |
| | - : new ImageResource( uri, BROKEN_IMAGE ); |
| | } |
| | |
| | /** |
| | * Scales the image found at the given URI. |
| | * |
| | - * @param uri Path to the image file to load. |
| | - * @param w Ignored. |
| | - * @param h Ignored. |
| | + * @param ir {@link ImageResource} of image loaded successfully. |
| | * @return Resource representing the rendered image and path. |
| | */ |
| | - private ImageResource scale( final String uri, final int w, final int h ) { |
| | - final var ir = super.get( uri, w, h ); |
| | + private ImageResource scale( final ImageResource ir ) { |
| | final var image = ir.getImage(); |
| | final var imageWidth = image.getWidth(); |
|
| | image.scale( newWidth, newHeight ); |
| | return ir; |
| | + } |
| | + |
| | + /** |
| | + * Lazily initializes the broken image placeholder. |
| | + * |
| | + * @return The {@link FSImage} that represents a broken image icon. |
| | + */ |
| | + private FSImage getBrokenImage() { |
| | + final var image = mBrokenImage; |
| | + |
| | + if( image == null ) { |
| | + mBrokenImage = createImage( BROKEN_IMAGE_PLACEHOLDER ); |
| | + } |
| | + |
| | + return mBrokenImage; |
| | } |
| | } |