Example #1
0
        public void mousePressed(MouseEvent e) {
          requestFocus();
          Point p = e.getPoint();
          int size =
              Math.min(
                  MAX_SIZE,
                  Math.min(
                      getWidth() - imagePadding.left - imagePadding.right,
                      getHeight() - imagePadding.top - imagePadding.bottom));
          p.translate(-(getWidth() / 2 - size / 2), -(getHeight() / 2 - size / 2));
          if (mode == ColorPicker.BRI || mode == ColorPicker.SAT) {
            // the two circular views:
            double radius = ((double) size) / 2.0;
            double x = p.getX() - size / 2.0;
            double y = p.getY() - size / 2.0;
            double r = Math.sqrt(x * x + y * y) / radius;
            double theta = Math.atan2(y, x) / (Math.PI * 2.0);

            if (r > 1) r = 1;

            if (mode == ColorPicker.BRI) {
              setHSB((float) (theta + .25f), (float) (r), bri);
            } else {
              setHSB((float) (theta + .25f), sat, (float) (r));
            }
          } else if (mode == ColorPicker.HUE) {
            float s = ((float) p.x) / ((float) size);
            float b = ((float) p.y) / ((float) size);
            if (s < 0) s = 0;
            if (s > 1) s = 1;
            if (b < 0) b = 0;
            if (b > 1) b = 1;
            setHSB(hue, s, b);
          } else {
            int x2 = p.x * 255 / size;
            int y2 = p.y * 255 / size;
            if (x2 < 0) x2 = 0;
            if (x2 > 255) x2 = 255;
            if (y2 < 0) y2 = 0;
            if (y2 > 255) y2 = 255;

            if (mode == ColorPicker.RED) {
              setRGB(red, x2, y2);
            } else if (mode == ColorPicker.GREEN) {
              setRGB(x2, green, y2);
            } else {
              setRGB(x2, y2, blue);
            }
          }
        }
Example #2
0
  /** Regenerates the image. */
  private synchronized void regenerateImage() {
    int size =
        Math.min(
            MAX_SIZE,
            Math.min(
                getWidth() - imagePadding.left - imagePadding.right,
                getHeight() - imagePadding.top - imagePadding.bottom));

    if (mode == ColorPicker.BRI || mode == ColorPicker.SAT) {
      float bri2 = this.bri;
      float sat2 = this.sat;
      float radius = ((float) size) / 2f;
      float hue2;
      float k = 1.2f; // the number of pixels to antialias
      for (int y = 0; y < size; y++) {
        float y2 = (y - size / 2f);
        for (int x = 0; x < size; x++) {
          float x2 = (x - size / 2f);
          double theta = Math.atan2(y2, x2) - 3 * Math.PI / 2.0;
          if (theta < 0) theta += 2 * Math.PI;

          double r = Math.sqrt(x2 * x2 + y2 * y2);
          if (r <= radius) {
            if (mode == ColorPicker.BRI) {
              hue2 = (float) (theta / (2 * Math.PI));
              sat2 = (float) (r / radius);
            } else { // SAT
              hue2 = (float) (theta / (2 * Math.PI));
              bri2 = (float) (r / radius);
            }
            row[x] = Color.HSBtoRGB(hue2, sat2, bri2);
            if (r > radius - k) {
              int alpha = (int) (255 - 255 * (r - radius + k) / k);
              if (alpha < 0) alpha = 0;
              if (alpha > 255) alpha = 255;
              row[x] = row[x] & 0xffffff + (alpha << 24);
            }
          } else {
            row[x] = 0x00000000;
          }
        }
        image.getRaster().setDataElements(0, y, size, 1, row);
      }
    } else if (mode == ColorPicker.HUE) {
      float hue2 = this.hue;
      for (int y = 0; y < size; y++) {
        float y2 = ((float) y) / ((float) size);
        for (int x = 0; x < size; x++) {
          float x2 = ((float) x) / ((float) size);
          row[x] = Color.HSBtoRGB(hue2, x2, y2);
        }
        image.getRaster().setDataElements(0, y, image.getWidth(), 1, row);
      }
    } else { // mode is RED, GREEN, or BLUE
      int red2 = red;
      int green2 = green;
      int blue2 = blue;
      for (int y = 0; y < size; y++) {
        float y2 = ((float) y) / ((float) size);
        for (int x = 0; x < size; x++) {
          float x2 = ((float) x) / ((float) size);
          if (mode == ColorPicker.RED) {
            green2 = (int) (x2 * 255 + .49);
            blue2 = (int) (y2 * 255 + .49);
          } else if (mode == ColorPicker.GREEN) {
            red2 = (int) (x2 * 255 + .49);
            blue2 = (int) (y2 * 255 + .49);
          } else {
            red2 = (int) (x2 * 255 + .49);
            green2 = (int) (y2 * 255 + .49);
          }
          row[x] = 0xFF000000 + (red2 << 16) + (green2 << 8) + blue2;
        }
        image.getRaster().setDataElements(0, y, size, 1, row);
      }
    }
    repaint();
  }