コード例 #1
0
  public static Image loadFromStream(@NotNull final InputStream inputStream, final int scale) {
    if (scale <= 0) throw new IllegalArgumentException("Scale must 1 or more");
    try {
      BufferExposingByteArrayOutputStream outputStream = new BufferExposingByteArrayOutputStream();
      try {
        byte[] buffer = new byte[1024];
        while (true) {
          final int n = inputStream.read(buffer);
          if (n < 0) break;
          outputStream.write(buffer, 0, n);
        }
      } finally {
        inputStream.close();
      }

      Image image =
          Toolkit.getDefaultToolkit()
              .createImage(outputStream.getInternalBuffer(), 0, outputStream.size());

      waitForImage(image);

      if (UIUtil.isRetina() && scale > 1) {
        image = RetinaImage.createFrom(image, scale, ourComponent);
      }

      return image;
    } catch (Exception ex) {
      LOG.error(ex);
    }

    return null;
  }
コード例 #2
0
  public static Icon scale(@NotNull final Icon source, double _scale) {
    final int hiDPIscale;
    if (source instanceof ImageIcon) {
      Image image = ((ImageIcon) source).getImage();
      hiDPIscale =
          RetinaImage.isAppleHiDPIScaledImage(image) || image instanceof JBHiDPIScaledImage ? 2 : 1;
    } else {
      hiDPIscale = 1;
    }
    final double scale = Math.min(32, Math.max(.1, _scale));
    return new Icon() {
      @Override
      public void paintIcon(Component c, Graphics g, int x, int y) {
        Graphics2D g2d = (Graphics2D) g.create();
        try {
          g2d.translate(x, y);
          AffineTransform transform = AffineTransform.getScaleInstance(scale, scale);
          transform.preConcatenate(g2d.getTransform());
          g2d.setTransform(transform);
          g2d.setRenderingHint(
              RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC);
          source.paintIcon(c, g2d, 0, 0);
        } finally {
          g2d.dispose();
        }
      }

      @Override
      public int getIconWidth() {
        return (int) (source.getIconWidth() * scale) / hiDPIscale;
      }

      @Override
      public int getIconHeight() {
        return (int) (source.getIconHeight() * scale) / hiDPIscale;
      }
    };
  }