Java Code Examples for java.awt.Color#getRGBColorComponents()
The following examples show how to use
java.awt.Color#getRGBColorComponents() .
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Example 1
| Source File: PSPrinterJob.java From openjdk-jdk8u with GNU General Public License v2.0 | 6 votes |
|
void emitPSColor(Color color) {
if (color != null && color.equals(mColor) == false) {
float[] rgb = color.getRGBColorComponents(null);
/* If the color is a gray value then use
* setgray.
*/
if (rgb[0] == rgb[1] && rgb[1] == rgb[2]) {
mPSStream.println(rgb[0] + SETGRAY_STR);
/* It's not gray so use setrgbcolor.
*/
} else {
mPSStream.println(rgb[0] + " "
+ rgb[1] + " "
+ rgb[2] + " "
+ SETRGBCOLOR_STR);
}
mColor = color;
}
}
Example 2
| Source File: PSPrinterJob.java From openjdk-jdk9 with GNU General Public License v2.0 | 6 votes |
|
void emitPSColor(Color color) {
if (color != null && color.equals(mColor) == false) {
float[] rgb = color.getRGBColorComponents(null);
/* If the color is a gray value then use
* setgray.
*/
if (rgb[0] == rgb[1] && rgb[1] == rgb[2]) {
mPSStream.println(rgb[0] + SETGRAY_STR);
/* It's not gray so use setrgbcolor.
*/
} else {
mPSStream.println(rgb[0] + " "
+ rgb[1] + " "
+ rgb[2] + " "
+ SETRGBCOLOR_STR);
}
mColor = color;
}
}
Example 3
| Source File: ColorUtils.java From ghidra with Apache License 2.0 | 6 votes |
|
/**
* A method to produce a color (either black or white) that contrasts with the given color.
* This is useful for finding a readable foreground color for a given background.
*
* @param color the color for which to find a contrast.
* @return the contrasting color.
*/
public static Color contrastForegroundColor(Color color) {
float[] rgbs = new float[3];
color.getRGBColorComponents(rgbs);
int fR = rgbs[0] > 0.5 ? 0 : 1;
int fG = rgbs[1] > 0.5 ? 0 : 1;
int fB = rgbs[2] > 0.5 ? 0 : 1;
// Note: the more accurate operation for calculating luminance is:
// float gamma = 2.2;
// float luminance = 0.2126 * pow(r, gamma) +
// 0.7152 * pow(g, gamma) +
// 0.0722 * pow(b, gamma);
// less precise, faster calculation
double luminance = 0.2126 * (fR * fR) + 0.7152 * (fG * fG) + 0.0722 * (fB * fB);
Color foreground = Color.WHITE;
if (luminance < 0.54) { // about half (a bit fudge, since we are approximating the pow())
foreground = Color.BLACK;
}
return foreground;
}
Example 4
| Source File: WPrinterJob.java From openjdk-8 with GNU General Public License v2.0 | 5 votes |
|
protected void fillRect(float x, float y, float width, float height,
Color color) {
float[] rgb = color.getRGBColorComponents(null);
fillRect(getPrintDC(), x, y, width, height,
(int) (rgb[0] * MAX_WCOLOR),
(int) (rgb[1] * MAX_WCOLOR),
(int) (rgb[2] * MAX_WCOLOR));
}
Example 5
| Source File: WPrinterJob.java From openjdk-jdk9 with GNU General Public License v2.0 | 5 votes |
|
protected boolean selectStylePen(int cap, int join, float width,
Color color) {
long endCap;
long lineJoin;
float[] rgb = color.getRGBColorComponents(null);
switch(cap) {
case BasicStroke.CAP_BUTT: endCap = PS_ENDCAP_FLAT; break;
case BasicStroke.CAP_ROUND: endCap = PS_ENDCAP_ROUND; break;
default:
case BasicStroke.CAP_SQUARE: endCap = PS_ENDCAP_SQUARE; break;
}
switch(join) {
case BasicStroke.JOIN_BEVEL:lineJoin = PS_JOIN_BEVEL; break;
default:
case BasicStroke.JOIN_MITER:lineJoin = PS_JOIN_MITER; break;
case BasicStroke.JOIN_ROUND:lineJoin = PS_JOIN_ROUND; break;
}
return (selectStylePen(getPrintDC(), endCap, lineJoin, width,
(int) (rgb[0] * MAX_WCOLOR),
(int) (rgb[1] * MAX_WCOLOR),
(int) (rgb[2] * MAX_WCOLOR)));
}
Example 6
| Source File: WPrinterJob.java From hottub with GNU General Public License v2.0 | 5 votes |
|
protected void selectPen(float width, Color color) {
float[] rgb = color.getRGBColorComponents(null);
selectPen(getPrintDC(), width,
(int) (rgb[0] * MAX_WCOLOR),
(int) (rgb[1] * MAX_WCOLOR),
(int) (rgb[2] * MAX_WCOLOR));
}
Example 7
| Source File: WPrinterJob.java From openjdk-jdk8u-backup with GNU General Public License v2.0 | 5 votes |
|
protected void fillRect(float x, float y, float width, float height,
Color color) {
float[] rgb = color.getRGBColorComponents(null);
fillRect(getPrintDC(), x, y, width, height,
(int) (rgb[0] * MAX_WCOLOR),
(int) (rgb[1] * MAX_WCOLOR),
(int) (rgb[2] * MAX_WCOLOR));
}
Example 8
| Source File: ReadAsGrayTest.java From jdk8u_jdk with GNU General Public License v2.0 | 5 votes |
|
private static boolean compareWithTolerance(Color a, Color b, float delta) {
float[] a_rgb = new float[3];
a_rgb = a.getRGBColorComponents(a_rgb);
float[] b_rgb = new float[3];
b_rgb = b.getRGBColorComponents(b_rgb);
for (int i = 0; i < 3; i++) {
if (Math.abs(a_rgb[i] - b_rgb[i]) > delta) {
return false;
}
}
return true;
}
Example 9
| Source File: WPrinterJob.java From TencentKona-8 with GNU General Public License v2.0 | 5 votes |
|
protected boolean selectStylePen(int cap, int join, float width,
Color color) {
long endCap;
long lineJoin;
float[] rgb = color.getRGBColorComponents(null);
switch(cap) {
case BasicStroke.CAP_BUTT: endCap = PS_ENDCAP_FLAT; break;
case BasicStroke.CAP_ROUND: endCap = PS_ENDCAP_ROUND; break;
default:
case BasicStroke.CAP_SQUARE: endCap = PS_ENDCAP_SQUARE; break;
}
switch(join) {
case BasicStroke.JOIN_BEVEL:lineJoin = PS_JOIN_BEVEL; break;
default:
case BasicStroke.JOIN_MITER:lineJoin = PS_JOIN_MITER; break;
case BasicStroke.JOIN_ROUND:lineJoin = PS_JOIN_ROUND; break;
}
return (selectStylePen(getPrintDC(), endCap, lineJoin, width,
(int) (rgb[0] * MAX_WCOLOR),
(int) (rgb[1] * MAX_WCOLOR),
(int) (rgb[2] * MAX_WCOLOR)));
}
Example 10
| Source File: Displayable.java From pdfxtk with Apache License 2.0 | 5 votes |
|
protected Color getHilightColor(Color rgbColor) {
Color h = (Color) hilightColors.get(rgbColor);
if (h == null) {
float[] rgb = rgbColor.getRGBColorComponents(null);
float[] hsb = Color.RGBtoHSB((int) rgb[0], (int) rgb[1], (int) rgb[2], null);
h = Color.getHSBColor(hsb[0]+0.5F, hsb[1], Math.max(1.0F, hsb[2]*2));
hilightColors.put(rgbColor, h);
}
return h;
}
Example 11
| Source File: WPrinterJob.java From TencentKona-8 with GNU General Public License v2.0 | 5 votes |
|
protected void fillRect(float x, float y, float width, float height,
Color color) {
float[] rgb = color.getRGBColorComponents(null);
fillRect(getPrintDC(), x, y, width, height,
(int) (rgb[0] * MAX_WCOLOR),
(int) (rgb[1] * MAX_WCOLOR),
(int) (rgb[2] * MAX_WCOLOR));
}
Example 12
| Source File: ReadAsGrayTest.java From jdk8u-dev-jdk with GNU General Public License v2.0 | 5 votes |
|
private static boolean compareWithTolerance(Color a, Color b, float delta) {
float[] a_rgb = new float[3];
a_rgb = a.getRGBColorComponents(a_rgb);
float[] b_rgb = new float[3];
b_rgb = b.getRGBColorComponents(b_rgb);
for (int i = 0; i < 3; i++) {
if (Math.abs(a_rgb[i] - b_rgb[i]) > delta) {
return false;
}
}
return true;
}
Example 13
| Source File: WPrinterJob.java From openjdk-8-source with GNU General Public License v2.0 | 5 votes |
|
protected void selectPen(float width, Color color) {
float[] rgb = color.getRGBColorComponents(null);
selectPen(getPrintDC(), width,
(int) (rgb[0] * MAX_WCOLOR),
(int) (rgb[1] * MAX_WCOLOR),
(int) (rgb[2] * MAX_WCOLOR));
}
Example 14
| Source File: WPrinterJob.java From jdk8u-dev-jdk with GNU General Public License v2.0 | 5 votes |
|
protected boolean selectStylePen(int cap, int join, float width,
Color color) {
long endCap;
long lineJoin;
float[] rgb = color.getRGBColorComponents(null);
switch(cap) {
case BasicStroke.CAP_BUTT: endCap = PS_ENDCAP_FLAT; break;
case BasicStroke.CAP_ROUND: endCap = PS_ENDCAP_ROUND; break;
default:
case BasicStroke.CAP_SQUARE: endCap = PS_ENDCAP_SQUARE; break;
}
switch(join) {
case BasicStroke.JOIN_BEVEL:lineJoin = PS_JOIN_BEVEL; break;
default:
case BasicStroke.JOIN_MITER:lineJoin = PS_JOIN_MITER; break;
case BasicStroke.JOIN_ROUND:lineJoin = PS_JOIN_ROUND; break;
}
return (selectStylePen(getPrintDC(), endCap, lineJoin, width,
(int) (rgb[0] * MAX_WCOLOR),
(int) (rgb[1] * MAX_WCOLOR),
(int) (rgb[2] * MAX_WCOLOR)));
}
Example 15
| Source File: WPrinterJob.java From dragonwell8_jdk with GNU General Public License v2.0 | 5 votes |
|
/**
* Set the GDI color for text drawing.
*/
protected void setTextColor(Color color) {
/* We only need to select a brush if the color has changed.
*/
if (color.equals(mLastTextColor) == false) {
mLastTextColor = color;
float[] rgb = color.getRGBColorComponents(null);
setTextColor(getPrintDC(),
(int) (rgb[0] * MAX_WCOLOR),
(int) (rgb[1] * MAX_WCOLOR),
(int) (rgb[2] * MAX_WCOLOR));
}
}
Example 16
| Source File: WPrinterJob.java From dragonwell8_jdk with GNU General Public License v2.0 | 5 votes |
|
protected void selectPen(float width, Color color) {
float[] rgb = color.getRGBColorComponents(null);
selectPen(getPrintDC(), width,
(int) (rgb[0] * MAX_WCOLOR),
(int) (rgb[1] * MAX_WCOLOR),
(int) (rgb[2] * MAX_WCOLOR));
}
Example 17
| Source File: WPrinterJob.java From jdk8u-jdk with GNU General Public License v2.0 | 5 votes |
|
/**
* Set the GDI color for text drawing.
*/
protected void setTextColor(Color color) {
/* We only need to select a brush if the color has changed.
*/
if (color.equals(mLastTextColor) == false) {
mLastTextColor = color;
float[] rgb = color.getRGBColorComponents(null);
setTextColor(getPrintDC(),
(int) (rgb[0] * MAX_WCOLOR),
(int) (rgb[1] * MAX_WCOLOR),
(int) (rgb[2] * MAX_WCOLOR));
}
}
Example 18
| Source File: WPrinterJob.java From openjdk-jdk8u-backup with GNU General Public License v2.0 | 5 votes |
|
protected boolean selectStylePen(int cap, int join, float width,
Color color) {
long endCap;
long lineJoin;
float[] rgb = color.getRGBColorComponents(null);
switch(cap) {
case BasicStroke.CAP_BUTT: endCap = PS_ENDCAP_FLAT; break;
case BasicStroke.CAP_ROUND: endCap = PS_ENDCAP_ROUND; break;
default:
case BasicStroke.CAP_SQUARE: endCap = PS_ENDCAP_SQUARE; break;
}
switch(join) {
case BasicStroke.JOIN_BEVEL:lineJoin = PS_JOIN_BEVEL; break;
default:
case BasicStroke.JOIN_MITER:lineJoin = PS_JOIN_MITER; break;
case BasicStroke.JOIN_ROUND:lineJoin = PS_JOIN_ROUND; break;
}
return (selectStylePen(getPrintDC(), endCap, lineJoin, width,
(int) (rgb[0] * MAX_WCOLOR),
(int) (rgb[1] * MAX_WCOLOR),
(int) (rgb[2] * MAX_WCOLOR)));
}
Example 19
| Source File: WPrinterJob.java From openjdk-jdk8u-backup with GNU General Public License v2.0 | 5 votes |
|
protected void selectSolidBrush(Color color) {
/* We only need to select a brush if the color has changed.
*/
if (color.equals(mLastColor) == false) {
mLastColor = color;
float[] rgb = color.getRGBColorComponents(null);
selectSolidBrush(getPrintDC(),
(int) (rgb[0] * MAX_WCOLOR),
(int) (rgb[1] * MAX_WCOLOR),
(int) (rgb[2] * MAX_WCOLOR));
}
}
Example 20
| Source File: CreateFlagController.java From webcurator with Apache License 2.0 | 4 votes |
|
/**
* Convert a RGB Color to it corresponding HSL values.
*
* @return an array containing the 3 HSL values.
*/
public static float[] fromRGB(Color color)
{
// Get RGB values in the range 0 - 1
float[] rgb = color.getRGBColorComponents( null );
float r = rgb[0];
float g = rgb[1];
float b = rgb[2];
// Minimum and Maximum RGB values are used in the HSL calculations
float min = Math.min(r, Math.min(g, b));
float max = Math.max(r, Math.max(g, b));
// Calculate the Hue
float h = 0;
if (max == min)
h = 0;
else if (max == r)
h = ((60 * (g - b) / (max - min)) + 360) % 360;
else if (max == g)
h = (60 * (b - r) / (max - min)) + 120;
else if (max == b)
h = (60 * (r - g) / (max - min)) + 240;
// Calculate the Luminance
float l = (max + min) / 2;
//System.out.println(max + " : " + min + " : " + l);
// Calculate the Saturation
float s = 0;
if (max == min)
s = 0;
else if (l <= .5f)
s = (max - min) / (max + min);
else
s = (max - min) / (2 - max - min);
return new float[] {h, s * 100, l * 100};
}
