Example usage for android.graphics Color colorToHSV

Introduction

In this page you can find the example usage for android.graphics Color colorToHSV.

Prototype

public static void colorToHSV(@ColorInt int color, @Size(3) float hsv[])

Source Link

Document

Convert the ARGB color to its HSV components.

Usage

From source file:Main.java

/**
 * Darken a color to a fraction of its current brightness.
 * @param color The input color./*from ww  w .  j a  va  2  s.  c o  m*/
 * @param darkenFraction The fraction of the current brightness the color should be.
 * @return The new darkened color.
 */
public static int getDarkenedColor(int color, float darkenFraction) {
    float[] hsv = new float[3];
    Color.colorToHSV(color, hsv);
    hsv[2] *= darkenFraction;
    return Color.HSVToColor(hsv);
}

From source file:Main.java

public static synchronized int getLighterColor(final int color) {
    // Get lighter color
    final float[] hsv = new float[3];

    Color.colorToHSV(color, hsv);
    hsv[1] *= 0.2f; // Saturation
    hsv[2] *= 1.5f; // Value
    return Color.HSVToColor(hsv);
}

From source file:Main.java

public static synchronized int getDarkerColor(final int color) {
    // Get darker color
    final float[] hsv = new float[3];
    Color.colorToHSV(color, hsv);
    hsv[2] *= 0.7f;/*from  w  w w .  j  a v a 2s  . c o m*/
    return Color.HSVToColor(hsv);
}

From source file:Main.java

public static synchronized int getStackedBackgroundColor(final int color) {
    // Get darker color
    final float[] hsv = new float[3];
    Color.colorToHSV(color, hsv);
    hsv[2] *= 0.2f;/* ww w.  j a  v  a2  s  .c  o m*/
    return Color.HSVToColor(hsv);
}

From source file:Main.java

public static Bitmap filterImage(Bitmap src) {
    if (src == null) {
        return null;
    }/*ww w  .  j a  va2 s. co  m*/

    final float minV = 0.7f;
    final float maxV = 0.85f;

    float[] hsvVals = getMainHSV(src);
    float deltaV = 0;
    if (hsvVals[2] < minV) {
        deltaV = minV - hsvVals[2];
    } else if (hsvVals[2] > maxV) {
        deltaV = maxV - hsvVals[2];
        if (hsvVals[1] < 0.1f) {
            deltaV *= 2;
        }
    }
    if (Math.abs(deltaV) < 0.0001f) {
        return src;
    }

    int w = src.getWidth();
    int h = src.getHeight();
    int[] pixels = new int[w * h];
    src.getPixels(pixels, 0, w, 0, 0, w, h);
    float[] HSV = new float[3];
    int index = 0;
    for (int y = 0; y < h; ++y) {
        for (int x = 0; x < w; ++x) {
            Color.colorToHSV(pixels[index], HSV);
            HSV[2] = clamp(HSV[2] + deltaV, 0f, 1f);
            pixels[index] = perferBlue(Color.HSVToColor(HSV));
            ++index;
        }
    }
    return Bitmap.createBitmap(pixels, w, h, Bitmap.Config.ARGB_8888);
}

From source file:Main.java

public static synchronized GradientDrawable getGradiant(final int color) {
    int[] colors;
    int darkerColor;
    // Get darker color
    final float[] hsv = new float[3];
    Color.colorToHSV(color, hsv);
    hsv[2] *= 0.9f; // value component
    darkerColor = Color.HSVToColor(hsv);

    colors = new int[2];
    colors[0] = darkerColor;//from www.j  a  va 2 s .co m
    colors[1] = color;

    final GradientDrawable d = new GradientDrawable(GradientDrawable.Orientation.BOTTOM_TOP, colors);
    d.setDither(true);

    return d;
}

From source file:Main.java

private static int setHSVParameter(int color, float newValue, int index) {
    float hsv[] = new float[3];
    Color.colorToHSV(color, hsv);
    hsv[index] = newValue;/*from w ww .  ja v a 2 s .  co  m*/
    return Color.HSVToColor(hsv);
}

From source file:Main.java

/**
 * For devices with Jellybean or later, darkens the given color to ensure that white text is
 * clearly visible on top of it.  For devices prior to Jellybean, does nothing, as the
 * sync adapter handles the color change.
 *
 * @param color//from w w w  . ja v  a2  s. c  om
 */
public static int getDisplayColorFromColor(int color) {
    float[] hsv = new float[3];
    Color.colorToHSV(color, hsv);
    hsv[1] = Math.min(hsv[1] * SATURATION_ADJUST, 1.0f);
    hsv[2] = hsv[2] * INTENSITY_ADJUST;
    return Color.HSVToColor(hsv);
}

From source file:Main.java

public static int getDarkerColor(final int color, final float ratio) {
    // Get darker color
    final float[] hsv = new float[3];
    Color.colorToHSV(color, hsv);
    hsv[2] *= ratio;/*from   ww  w . j  a  v  a  2s  .  c  o  m*/
    return Color.HSVToColor(hsv);
}

From source file:Main.java

/**
 * Lighten a color by a specific factor.
 * //from   w w  w.  j a v  a2s .c om
 * @param color the color to lighten
 * @param factor the factor to apply; e.g. 150 makes the color 50% brighter, 50
 * makes the color 50% darker, 100 makes no change.
 * 
 * @return the lightened version of the color
 */
public static int lightenColor(int color, int factor) {
    float[] hsv = new float[3];
    Color.colorToHSV(color, hsv);
    float s = hsv[1];
    float v = hsv[2] * factor / 100.0f;
    if (v > 1.0f) {
        // Value has overflowed, so adjust the saturation instead.
        s -= v - 1.0f;
        if (s < 0)
            s = 0;
        v = 1.0f;
    }
    hsv[1] = s;
    hsv[2] = v;
    return Color.HSVToColor(hsv);
}