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Diffstat (limited to 'awt/java/awt/Color.java')
| -rw-r--r-- | awt/java/awt/Color.java | 990 |
1 files changed, 0 insertions, 990 deletions
diff --git a/awt/java/awt/Color.java b/awt/java/awt/Color.java deleted file mode 100644 index 93c532d..0000000 --- a/awt/java/awt/Color.java +++ /dev/null @@ -1,990 +0,0 @@ -/* - * Licensed to the Apache Software Foundation (ASF) under one or more - * contributor license agreements. See the NOTICE file distributed with - * this work for additional information regarding copyright ownership. - * The ASF licenses this file to You under the Apache License, Version 2.0 - * (the "License"); you may not use this file except in compliance with - * the License. You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ -/** - * @author Oleg V. Khaschansky - * @version $Revision$ - */ - -package java.awt; - -import java.awt.color.ColorSpace; -import java.awt.geom.AffineTransform; -import java.awt.geom.Rectangle2D; -import java.awt.image.ColorModel; -import java.awt.image.DataBufferInt; -import java.awt.image.Raster; -import java.awt.image.WritableRaster; -import java.io.Serializable; -import java.util.Arrays; - -import org.apache.harmony.awt.internal.nls.Messages; - -/** - * The Color class defines colors in the default sRGB color space or in the - * specified ColorSpace. Every Color contains alpha value. The alpha value - * defines the transparency of a color and can be represented by a float value - * in the range 0.0 - 1.0 or 0 - 255. - * - * @since Android 1.0 - */ -public class Color implements Paint, Serializable { - - /** - * The Constant serialVersionUID. - */ - private static final long serialVersionUID = 118526816881161077L; - - /* - * The values of the following colors are based on 1.5 release behavior - * which can be revealed using the following or similar code: Color c = - * Color.white; System.out.println(c); - */ - - /** - * The color white. - */ - public static final Color white = new Color(255, 255, 255); - - /** - * The color white. - */ - public static final Color WHITE = white; - - /** - * The color light gray. - */ - public static final Color lightGray = new Color(192, 192, 192); - - /** - * The color light gray. - */ - public static final Color LIGHT_GRAY = lightGray; - - /** - * The color gray. - */ - public static final Color gray = new Color(128, 128, 128); - - /** - * The color gray. - */ - public static final Color GRAY = gray; - - /** - * The color dark gray. - */ - public static final Color darkGray = new Color(64, 64, 64); - - /** - * The color dark gray. - */ - public static final Color DARK_GRAY = darkGray; - - /** - * The color black. - */ - public static final Color black = new Color(0, 0, 0); - - /** - * The color black. - */ - public static final Color BLACK = black; - - /** - * The color red. - */ - public static final Color red = new Color(255, 0, 0); - - /** - * The color red. - */ - public static final Color RED = red; - - /** - * The color pink. - */ - public static final Color pink = new Color(255, 175, 175); - - /** - * The color pink. - */ - public static final Color PINK = pink; - - /** - * The color orange. - */ - public static final Color orange = new Color(255, 200, 0); - - /** - * The color orange. - */ - public static final Color ORANGE = orange; - - /** - * The color yellow. - */ - public static final Color yellow = new Color(255, 255, 0); - - /** - * The color yellow. - */ - public static final Color YELLOW = yellow; - - /** - * The color green. - */ - public static final Color green = new Color(0, 255, 0); - - /** - * The color green. - */ - public static final Color GREEN = green; - - /** - * The color magenta. - */ - public static final Color magenta = new Color(255, 0, 255); - - /** - * The color magenta. - */ - public static final Color MAGENTA = magenta; - - /** - * The color cyan. - */ - public static final Color cyan = new Color(0, 255, 255); - - /** - * The color cyan. - */ - public static final Color CYAN = cyan; - - /** - * The color blue. - */ - public static final Color blue = new Color(0, 0, 255); - - /** - * The color blue. - */ - public static final Color BLUE = blue; - - /** - * integer RGB value. - */ - int value; - - /** - * Float sRGB value. - */ - private float[] frgbvalue; - - /** - * Color in an arbitrary color space with <code>float</code> components. If - * null, other value should be used. - */ - private float fvalue[]; - - /** - * Float alpha value. If frgbvalue is null, this is not valid data. - */ - private float falpha; - - /** - * The color's color space if applicable. - */ - private ColorSpace cs; - - /* - * The value of the SCALE_FACTOR is based on 1.5 release behavior which can - * be revealed using the following code: Color c = new Color(100, 100, 100); - * Color bc = c.brighter(); System.out.println("Brighter factor: " + - * ((float)c.getRed())/((float)bc.getRed())); Color dc = c.darker(); - * System.out.println("Darker factor: " + - * ((float)dc.getRed())/((float)c.getRed())); The result is the same for - * brighter and darker methods, so we need only one scale factor for both. - */ - /** - * The Constant SCALE_FACTOR. - */ - private static final double SCALE_FACTOR = 0.7; - - /** - * The Constant MIN_SCALABLE. - */ - private static final int MIN_SCALABLE = 3; // should increase when - - // multiplied by SCALE_FACTOR - - /** - * The current paint context. - */ - transient private PaintContext currentPaintContext; - - /** - * Creates a color in the specified ColorSpace, the specified color - * components and the specified alpha. - * - * @param cspace - * the ColorSpace to be used to define the components. - * @param components - * the components. - * @param alpha - * the alpha. - */ - public Color(ColorSpace cspace, float[] components, float alpha) { - int nComps = cspace.getNumComponents(); - float comp; - fvalue = new float[nComps]; - - for (int i = 0; i < nComps; i++) { - comp = components[i]; - if (comp < 0.0f || comp > 1.0f) { - // awt.107=Color parameter outside of expected range: component - // {0}. - throw new IllegalArgumentException(Messages.getString("awt.107", i)); //$NON-NLS-1$ - } - fvalue[i] = components[i]; - } - - if (alpha < 0.0f || alpha > 1.0f) { - // awt.108=Alpha value outside of expected range. - throw new IllegalArgumentException(Messages.getString("awt.108")); //$NON-NLS-1$ - } - falpha = alpha; - - cs = cspace; - - frgbvalue = cs.toRGB(fvalue); - - value = ((int)(frgbvalue[2] * 255 + 0.5)) | (((int)(frgbvalue[1] * 255 + 0.5)) << 8) - | (((int)(frgbvalue[0] * 255 + 0.5)) << 16) | (((int)(falpha * 255 + 0.5)) << 24); - } - - /** - * Instantiates a new sRGB color with the specified combined RGBA value - * consisting of the alpha component in bits 24-31, the red component in - * bits 16-23, the green component in bits 8-15, and the blue component in - * bits 0-7. If the hasalpha argument is false, the alpha has default value - * - 255. - * - * @param rgba - * the RGBA components. - * @param hasAlpha - * the alpha parameter is true if alpha bits are valid, false - * otherwise. - */ - public Color(int rgba, boolean hasAlpha) { - if (!hasAlpha) { - value = rgba | 0xFF000000; - } else { - value = rgba; - } - } - - /** - * Instantiates a new color with the specified red, green, blue and alpha - * components. - * - * @param r - * the red component. - * @param g - * the green component. - * @param b - * the blue component. - * @param a - * the alpha component. - */ - public Color(int r, int g, int b, int a) { - if ((r & 0xFF) != r || (g & 0xFF) != g || (b & 0xFF) != b || (a & 0xFF) != a) { - // awt.109=Color parameter outside of expected range. - throw new IllegalArgumentException(Messages.getString("awt.109")); //$NON-NLS-1$ - } - value = b | (g << 8) | (r << 16) | (a << 24); - } - - /** - * Instantiates a new opaque sRGB color with the specified red, green, and - * blue values. The Alpha component is set to the default - 1.0. - * - * @param r - * the red component. - * @param g - * the green component. - * @param b - * the blue component. - */ - public Color(int r, int g, int b) { - if ((r & 0xFF) != r || (g & 0xFF) != g || (b & 0xFF) != b) { - // awt.109=Color parameter outside of expected range. - throw new IllegalArgumentException(Messages.getString("awt.109")); //$NON-NLS-1$ - } - // 0xFF for alpha channel - value = b | (g << 8) | (r << 16) | 0xFF000000; - } - - /** - * Instantiates a new sRGB color with the specified RGB value consisting of - * the red component in bits 16-23, the green component in bits 8-15, and - * the blue component in bits 0-7. Alpha has default value - 255. - * - * @param rgb - * the RGB components. - */ - public Color(int rgb) { - value = rgb | 0xFF000000; - } - - /** - * Instantiates a new color with the specified red, green, blue and alpha - * components. - * - * @param r - * the red component. - * @param g - * the green component. - * @param b - * the blue component. - * @param a - * the alpha component. - */ - public Color(float r, float g, float b, float a) { - this((int)(r * 255 + 0.5), (int)(g * 255 + 0.5), (int)(b * 255 + 0.5), (int)(a * 255 + 0.5)); - falpha = a; - fvalue = new float[3]; - fvalue[0] = r; - fvalue[1] = g; - fvalue[2] = b; - frgbvalue = fvalue; - } - - /** - * Instantiates a new color with the specified red, green, and blue - * components and default alpha value - 1.0. - * - * @param r - * the red component. - * @param g - * the green component. - * @param b - * the blue component. - */ - public Color(float r, float g, float b) { - this(r, g, b, 1.0f); - } - - public PaintContext createContext(ColorModel cm, Rectangle r, Rectangle2D r2d, - AffineTransform xform, RenderingHints rhs) { - if (currentPaintContext != null) { - return currentPaintContext; - } - currentPaintContext = new Color.ColorPaintContext(value); - return currentPaintContext; - } - - /** - * Returns a string representation of the Color object. - * - * @return the string representation of the Color object. - */ - @Override - public String toString() { - /* - * The format of the string is based on 1.5 release behavior which can - * be revealed using the following code: Color c = new Color(1, 2, 3); - * System.out.println(c); - */ - - return getClass().getName() + "[r=" + getRed() + //$NON-NLS-1$ - ",g=" + getGreen() + //$NON-NLS-1$ - ",b=" + getBlue() + //$NON-NLS-1$ - "]"; //$NON-NLS-1$ - } - - /** - * Compares the specified Object to the Color. - * - * @param obj - * the Object to be compared. - * @return true, if the specified Object is a Color whose value is equal to - * this Color, false otherwise. - */ - @Override - public boolean equals(Object obj) { - if (obj instanceof Color) { - return ((Color)obj).value == this.value; - } - return false; - } - - /** - * Returns a float array containing the color and alpha components of the - * Color in the specified ColorSpace. - * - * @param colorSpace - * the specified ColorSpace. - * @param components - * the results of this method will be written to this float - * array. If null, a float array will be created. - * @return the color and alpha components in a float array. - */ - public float[] getComponents(ColorSpace colorSpace, float[] components) { - int nComps = colorSpace.getNumComponents(); - if (components == null) { - components = new float[nComps + 1]; - } - - getColorComponents(colorSpace, components); - - if (frgbvalue != null) { - components[nComps] = falpha; - } else { - components[nComps] = getAlpha() / 255f; - } - - return components; - } - - /** - * Returns a float array containing the color components of the Color in the - * specified ColorSpace. - * - * @param colorSpace - * the specified ColorSpace. - * @param components - * the results of this method will be written to this float - * array. If null, a float array will be created. - * @return the color components in a float array. - */ - public float[] getColorComponents(ColorSpace colorSpace, float[] components) { - float[] cieXYZComponents = getColorSpace().toCIEXYZ(getColorComponents(null)); - float[] csComponents = colorSpace.fromCIEXYZ(cieXYZComponents); - - if (components == null) { - return csComponents; - } - - for (int i = 0; i < csComponents.length; i++) { - components[i] = csComponents[i]; - } - - return components; - } - - /** - * Gets the ColorSpace of this Color. - * - * @return the ColorSpace object. - */ - public ColorSpace getColorSpace() { - if (cs == null) { - cs = ColorSpace.getInstance(ColorSpace.CS_sRGB); - } - - return cs; - } - - /** - * Creates a new Color which is a darker than this Color according to a - * fixed scale factor. - * - * @return the darker Color. - */ - public Color darker() { - return new Color((int)(getRed() * SCALE_FACTOR), (int)(getGreen() * SCALE_FACTOR), - (int)(getBlue() * SCALE_FACTOR)); - } - - /** - * Creates a new Color which is a brighter than this Color. - * - * @return the brighter Color. - */ - public Color brighter() { - - int r = getRed(); - int b = getBlue(); - int g = getGreen(); - - if (r == 0 && b == 0 && g == 0) { - return new Color(MIN_SCALABLE, MIN_SCALABLE, MIN_SCALABLE); - } - - if (r < MIN_SCALABLE && r != 0) { - r = MIN_SCALABLE; - } else { - r = (int)(r / SCALE_FACTOR); - r = (r > 255) ? 255 : r; - } - - if (b < MIN_SCALABLE && b != 0) { - b = MIN_SCALABLE; - } else { - b = (int)(b / SCALE_FACTOR); - b = (b > 255) ? 255 : b; - } - - if (g < MIN_SCALABLE && g != 0) { - g = MIN_SCALABLE; - } else { - g = (int)(g / SCALE_FACTOR); - g = (g > 255) ? 255 : g; - } - - return new Color(r, g, b); - } - - /** - * Returns a float array containing the color and alpha components of the - * Color in the default sRGB color space. - * - * @param components - * the results of this method will be written to this float - * array. A new float array will be created if this argument is - * null. - * @return the RGB color and alpha components in a float array. - */ - public float[] getRGBComponents(float[] components) { - if (components == null) { - components = new float[4]; - } - - if (frgbvalue != null) { - components[3] = falpha; - } else { - components[3] = getAlpha() / 255f; - } - - getRGBColorComponents(components); - - return components; - } - - /** - * Returns a float array containing the color components of the Color in the - * default sRGB color space. - * - * @param components - * the results of this method will be written to this float - * array. A new float array will be created if this argument is - * null. - * @return the RGB color components in a float array. - */ - public float[] getRGBColorComponents(float[] components) { - if (components == null) { - components = new float[3]; - } - - if (frgbvalue != null) { - components[2] = frgbvalue[2]; - components[1] = frgbvalue[1]; - components[0] = frgbvalue[0]; - } else { - components[2] = getBlue() / 255f; - components[1] = getGreen() / 255f; - components[0] = getRed() / 255f; - } - - return components; - } - - /** - * Returns a float array which contains the color and alpha components of - * the Color in the ColorSpace of the Color. - * - * @param components - * the results of this method will be written to this float - * array. A new float array will be created if this argument is - * null. - * @return the color and alpha components in a float array. - */ - public float[] getComponents(float[] components) { - if (fvalue == null) { - return getRGBComponents(components); - } - - int nColorComps = fvalue.length; - - if (components == null) { - components = new float[nColorComps + 1]; - } - - getColorComponents(components); - - components[nColorComps] = falpha; - - return components; - } - - /** - * Returns a float array which contains the color components of the Color in - * the ColorSpace of the Color. - * - * @param components - * the results of this method will be written to this float - * array. A new float array will be created if this argument is - * null. - * @return the color components in a float array. - */ - public float[] getColorComponents(float[] components) { - if (fvalue == null) { - return getRGBColorComponents(components); - } - - if (components == null) { - components = new float[fvalue.length]; - } - - for (int i = 0; i < fvalue.length; i++) { - components[i] = fvalue[i]; - } - - return components; - } - - /** - * Returns a hash code of this Color object. - * - * @return a hash code of this Color object. - */ - @Override - public int hashCode() { - return value; - } - - public int getTransparency() { - switch (getAlpha()) { - case 0xff: - return Transparency.OPAQUE; - case 0: - return Transparency.BITMASK; - default: - return Transparency.TRANSLUCENT; - } - } - - /** - * Gets the red component of the Color in the range 0-255. - * - * @return the red component of the Color. - */ - public int getRed() { - return (value >> 16) & 0xFF; - } - - /** - * Gets the RGB value that represents the color in the default sRGB - * ColorModel. - * - * @return the RGB color value in the default sRGB ColorModel. - */ - public int getRGB() { - return value; - } - - /** - * Gets the green component of the Color in the range 0-255. - * - * @return the green component of the Color. - */ - public int getGreen() { - return (value >> 8) & 0xFF; - } - - /** - * Gets the blue component of the Color in the range 0-255. - * - * @return the blue component of the Color. - */ - public int getBlue() { - return value & 0xFF; - } - - /** - * Gets the alpha component of the Color in the range 0-255. - * - * @return the alpha component of the Color. - */ - public int getAlpha() { - return (value >> 24) & 0xFF; - } - - /** - * Gets the Color from the specified string, or returns the Color specified - * by the second parameter. - * - * @param nm - * the specified string. - * @param def - * the default Color. - * @return the color from the specified string, or the Color specified by - * the second parameter. - */ - public static Color getColor(String nm, Color def) { - Integer integer = Integer.getInteger(nm); - - if (integer == null) { - return def; - } - - return new Color(integer.intValue()); - } - - /** - * Gets the Color from the specified string, or returns the Color converted - * from the second parameter. - * - * @param nm - * the specified string. - * @param def - * the default Color. - * @return the color from the specified string, or the Color converted from - * the second parameter. - */ - public static Color getColor(String nm, int def) { - Integer integer = Integer.getInteger(nm); - - if (integer == null) { - return new Color(def); - } - - return new Color(integer.intValue()); - } - - /** - * Gets the Color from the specified String. - * - * @param nm - * the specified string. - * @return the Color object, or null. - */ - public static Color getColor(String nm) { - Integer integer = Integer.getInteger(nm); - - if (integer == null) { - return null; - } - - return new Color(integer.intValue()); - } - - /** - * Decodes a String to an integer and returns the specified opaque Color. - * - * @param nm - * the String which represents an opaque color as a 24-bit - * integer. - * @return the Color object from the given String. - * @throws NumberFormatException - * if the specified string can not be converted to an integer. - */ - public static Color decode(String nm) throws NumberFormatException { - Integer integer = Integer.decode(nm); - return new Color(integer.intValue()); - } - - /** - * Gets a Color object using the specified values of the HSB color model. - * - * @param h - * the hue component of the Color. - * @param s - * the saturation of the Color. - * @param b - * the brightness of the Color. - * @return a color object with the specified hue, saturation and brightness - * values. - */ - public static Color getHSBColor(float h, float s, float b) { - return new Color(HSBtoRGB(h, s, b)); - } - - /** - * Converts the Color specified by the RGB model to an equivalent color in - * the HSB model. - * - * @param r - * the red component. - * @param g - * the green component. - * @param b - * the blue component. - * @param hsbvals - * the array of result hue, saturation, brightness values or - * null. - * @return the float array of hue, saturation, brightness values. - */ - public static float[] RGBtoHSB(int r, int g, int b, float[] hsbvals) { - if (hsbvals == null) { - hsbvals = new float[3]; - } - - int V = Math.max(b, Math.max(r, g)); - int temp = Math.min(b, Math.min(r, g)); - - float H, S, B; - - B = V / 255.f; - - if (V == temp) { - H = S = 0; - } else { - S = (V - temp) / ((float)V); - - float Cr = (V - r) / (float)(V - temp); - float Cg = (V - g) / (float)(V - temp); - float Cb = (V - b) / (float)(V - temp); - - if (r == V) { - H = Cb - Cg; - } else if (g == V) { - H = 2 + Cr - Cb; - } else { - H = 4 + Cg - Cr; - } - - H /= 6.f; - if (H < 0) { - H++; - } - } - - hsbvals[0] = H; - hsbvals[1] = S; - hsbvals[2] = B; - - return hsbvals; - } - - /** - * Converts the Color specified by the HSB model to an equivalent color in - * the default RGB model. - * - * @param hue - * the hue component of the Color. - * @param saturation - * the saturation of the Color. - * @param brightness - * the brightness of the Color. - * @return the RGB value of the color with the specified hue, saturation and - * brightness. - */ - public static int HSBtoRGB(float hue, float saturation, float brightness) { - float fr, fg, fb; - - if (saturation == 0) { - fr = fg = fb = brightness; - } else { - float H = (hue - (float)Math.floor(hue)) * 6; - int I = (int)Math.floor(H); - float F = H - I; - float M = brightness * (1 - saturation); - float N = brightness * (1 - saturation * F); - float K = brightness * (1 - saturation * (1 - F)); - - switch (I) { - case 0: - fr = brightness; - fg = K; - fb = M; - break; - case 1: - fr = N; - fg = brightness; - fb = M; - break; - case 2: - fr = M; - fg = brightness; - fb = K; - break; - case 3: - fr = M; - fg = N; - fb = brightness; - break; - case 4: - fr = K; - fg = M; - fb = brightness; - break; - case 5: - fr = brightness; - fg = M; - fb = N; - break; - default: - fr = fb = fg = 0; // impossible, to supress compiler error - } - } - - int r = (int)(fr * 255. + 0.5); - int g = (int)(fg * 255. + 0.5); - int b = (int)(fb * 255. + 0.5); - - return (r << 16) | (g << 8) | b | 0xFF000000; - } - - /** - * The Class ColorPaintContext. - */ - class ColorPaintContext implements PaintContext { - - /** - * The RGB value. - */ - int rgbValue; - - /** - * The saved raster. - */ - WritableRaster savedRaster = null; - - /** - * Instantiates a new color paint context. - * - * @param rgb - * the RGB value. - */ - protected ColorPaintContext(int rgb) { - rgbValue = rgb; - } - - public void dispose() { - savedRaster = null; - } - - public ColorModel getColorModel() { - return ColorModel.getRGBdefault(); - } - - public Raster getRaster(int x, int y, int w, int h) { - if (savedRaster == null || w != savedRaster.getWidth() || h != savedRaster.getHeight()) { - savedRaster = getColorModel().createCompatibleWritableRaster(w, h); - - // Suppose we have here simple INT/RGB color/sample model - DataBufferInt intBuffer = (DataBufferInt)savedRaster.getDataBuffer(); - int rgbValues[] = intBuffer.getData(); - int rgbFillValue = rgbValue; - Arrays.fill(rgbValues, rgbFillValue); - } - - return savedRaster; - } - } -} |