package jp.sblo.pandora.jota;
import android.app.Dialog;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.LinearGradient;
import android.graphics.Paint;
import android.graphics.RectF;
import android.graphics.Shader;
import android.graphics.SweepGradient;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
public class ColorPickerDialog extends Dialog {
public interface OnColorChangedListener {
void colorChanged(int fg , int bg);
}
private OnColorChangedListener mListener;
private String mTitle;
private boolean mBgMode;
private int mBgColor;
private int mFgColor;
private static class ColorPickerView extends View {
private Paint mPaint, mPaintC;
private Paint mOKPaint;
private Paint mTextPaint;
private final int[] mColors;
private int[] mChroma;
private OnColorChangedListener mListener;
private Shader sg, lg;
private int selectColor;
private float selectHue = 0;
private String mLabelOk;
int bgColor;
int fgColor;
boolean mBgMode;
ColorPickerView(Context c, OnColorChangedListener l, int fg , int bg , boolean bgmode) {
super(c);
mListener = l;
bgColor = bg;
fgColor = fg;
mBgMode = bgmode;
if ( mBgMode ){
selectColor = bg;
}else{
selectColor = fg;
}
selectHue = getHue(selectColor);
mColors = new int[] {
0xFFFF0000, 0xFFFF00FF, 0xFF0000FF, 0xFF00FFFF, 0xFF00FF00,
0xFFFFFF00, 0xFFFF0000
};
mChroma = new int[] {
0xFF000000, 0xFF888888, 0xFFFFFFFF
};
sg = new SweepGradient(0, 0, mColors, null);
lg = new LinearGradient(OK_X0, 0, OK_X1, 0, mChroma, null, Shader.TileMode.CLAMP);
mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
mPaint.setStyle(Paint.Style.STROKE);
mPaint.setShader(sg);
mPaint.setStrokeWidth(CENTER_RADIUS);
mPaintC = new Paint(Paint.ANTI_ALIAS_FLAG);
mPaintC.setStyle(Paint.Style.FILL);
mPaintC.setShader(lg);
mPaintC.setStrokeWidth(2);
mOKPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
mOKPaint.setStyle(Paint.Style.FILL);
mOKPaint.setColor(bgColor);
mOKPaint.setStrokeWidth(5);
mTextPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
mTextPaint.setColor(fgColor);
mTextPaint.setTextSize(20);
mLabelOk = getContext().getString(R.string.label_ok);
float colorickersize = getContext().getResources().getDimension(R.dimen.color_picker_size);
CENTER_X = (int)colorickersize;
CENTER_Y = (int)colorickersize;
CENTER_RADIUS = 24;
OK_X0 = - CENTER_X/2;
OK_X1 = CENTER_X/2;
OK_Y0 = (float) (CENTER_X * 1.2);
OK_Y1 = (float) (CENTER_X * 1.5);
}
private boolean mTrackingOK;
private boolean mHighlightOK;
private int CENTER_X = 150;
private int CENTER_Y = 150;
private int CENTER_RADIUS = 24;
private float OK_X0 = - CENTER_X/2;
private float OK_X1 = CENTER_X/2;
private float OK_Y0 = (float) (CENTER_X * 1.2);
private float OK_Y1 = (float) (CENTER_X * 1.5);
private void drawSVRegion(Canvas canvas) {
final float RESOLUTION = (float)0.01;
for(float y = 0; y < 1; y += RESOLUTION) {
mChroma = new int[10];
int i = 0;
for(float x = 0; i < 10; x += 0.1, i+=1) {
mChroma[i] = setHSVColor(selectHue, x, y);
}
lg = new LinearGradient(OK_X0, 0, OK_X1, 0, mChroma, null, Shader.TileMode.CLAMP);
mPaintC.setShader(lg);
//canvas.drawRect(OK_X0, OK_X0 + (CENTER_X * y), OK_X1, OK_X0 + (float)(CENTER_X * (y)), mPaintC);
canvas.drawLine(OK_X0, OK_X0 + (CENTER_X * y), OK_X1, OK_X0 + (float)(CENTER_X * (y)), mPaintC);
}
}
@Override
protected void onDraw(Canvas canvas) {
float r = CENTER_X - mPaint.getStrokeWidth() * 0.5f;
canvas.translate(CENTER_X, CENTER_X);
canvas.drawOval(new RectF(-r, -r, r, r), mPaint);
drawSVRegion(canvas);
canvas.drawRoundRect(new RectF(OK_X0, OK_Y0, OK_X1, OK_Y1), 5, 5, mOKPaint);
canvas.drawText( mLabelOk , 0 - 14, (float) (CENTER_X * 1.4) + 2, mTextPaint);
if (mTrackingOK) {
int c = mOKPaint.getColor();
mOKPaint.setStyle(Paint.Style.STROKE);
if (mHighlightOK)
mOKPaint.setAlpha(0xFF);
else
mOKPaint.setAlpha(0x80);
float padding = 5;
//canvas.drawCircle(0, 0, CENTER_RADIUS + mOKPaint.getStrokeWidth(), mOKPaint);
canvas.drawRoundRect(new RectF(OK_X0 - padding, OK_Y0 - padding, OK_X1 + padding, OK_Y1 + padding), 5, 5, mOKPaint);
mOKPaint.setStyle(Paint.Style.FILL);
mOKPaint.setColor(c);
}
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
setMeasuredDimension(CENTER_X * 2, (int)(CENTER_Y * 2.8));
}
// private int floatToByte(float x) {
// int n = java.lang.Math.round(x);
// return n;
// }
//
// private int pinToByte(int n) {
// if (n < 0)
// n = 0;
// else if (n > 255)
// n = 255;
// return n;
// }
private float getHue(int color) {
float hsv[] = new float[3];
Color.colorToHSV(color, hsv);
return hsv[0];
}
private int ave(int s, int d, float p) {
return s + java.lang.Math.round(p * (d - s));
}
private int interpColor(int colors[], float unit) {
if (unit <= 0) {
return colors[0];
}
if (unit >= 1) {
return colors[colors.length - 1];
}
float p = unit * (colors.length - 1);
int i = (int)p;
p -= i;
// now p is just the fractional part [0...1) and i is the index
int c0 = colors[i];
int c1 = colors[i+1];
int a = ave(Color.alpha(c0), Color.alpha(c1), p);
int r = ave(Color.red(c0), Color.red(c1), p);
int g = ave(Color.green(c0), Color.green(c1), p);
int b = ave(Color.blue(c0), Color.blue(c1), p);
return Color.argb(a, r, g, b);
}
// private int rotateColor(int color, float rad) {
// float deg = rad * 180 / PI;
// int r = Color.red(color);
// int g = Color.green(color);
// int b = Color.blue(color);
//
// ColorMatrix cm = new ColorMatrix();
// ColorMatrix tmp = new ColorMatrix();
//
// cm.setRGB2YUV();
// tmp.setRotate(0, deg);
// cm.postConcat(tmp);
// tmp.setYUV2RGB();
// cm.postConcat(tmp);
//
// final float[] a = cm.getArray();
//
// int ir = floatToByte(a[0] * r + a[1] * g + a[2] * b);
// int ig = floatToByte(a[5] * r + a[6] * g + a[7] * b);
// int ib = floatToByte(a[10] * r + a[11] * g + a[12] * b);
//
// return Color.argb(Color.alpha(color), pinToByte(ir), pinToByte(ig), pinToByte(ib));
// }
private int setHSVColor(float hue, float saturation, float value) {
float[] hsv = new float[3];
if(hue >= 360)
hue = 359;
else if(hue < 0)
hue = 0;
if(saturation > 1)
saturation = 1;
else if(saturation < 0)
saturation = 0;
if(value > 1)
value = 1;
else if(value < 0)
value = 0;
hsv[0] = hue;
hsv[1] = saturation;
hsv[2] = value;
return Color.HSVToColor(hsv);
}
private static final float PI = 3.1415927f;
@Override
public boolean onTouchEvent(MotionEvent event) {
float x = event.getX() - CENTER_X;
float y = event.getY() - CENTER_Y;
float r = (float)(java.lang.Math.sqrt(x*x + y*y));
boolean inOK = false;
boolean inOval = false;
boolean inRect = false;
if(r <= CENTER_X) {
if(r > CENTER_X - CENTER_RADIUS)
inOval = true;
else if(x >= OK_X0 && x < OK_X1 && y >= OK_X0 && y < OK_X1)
inRect = true;
}
else if(x >= OK_X0 && x < OK_X1 && y >= OK_Y0 && y < OK_Y1){
inOK = true;
}
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
mTrackingOK = inOK;
if (inOK) {
mHighlightOK = true;
invalidate();
break;
}
case MotionEvent.ACTION_MOVE:
if (mTrackingOK) {
if (mHighlightOK != inOK) {
mHighlightOK = inOK;
invalidate();
}
}
else if(inOval) {
float angle = (float)java.lang.Math.atan2(y, x);
// need to turn angle [-PI ... PI] into unit [0....1]
float unit = angle/(2*PI);
if (unit < 0) {
unit += 1;
}
selectColor = interpColor(mColors, unit);
if ( mBgMode ){
mOKPaint.setColor(selectColor);
bgColor = selectColor;
}else{
mTextPaint.setColor(selectColor);
fgColor = selectColor;
}
//mChroma[1] = selectColor;
selectHue = getHue(selectColor);
//lg = new LinearGradient(OK_X0, 0, OK_X1, 0, mChroma, null, Shader.TileMode.CLAMP);
//mPaintC.setShader(lg);
invalidate();
}
else if(inRect){
int selectColor2 = setHSVColor(selectHue, (x - OK_X0)/CENTER_X, (y - OK_X0)/CENTER_Y);
selectColor = selectColor2;
if ( mBgMode ){
mOKPaint.setColor(selectColor);
bgColor = selectColor;
}else{
mTextPaint.setColor(selectColor);
fgColor = selectColor;
}
invalidate();
}
break;
case MotionEvent.ACTION_UP:
if (mTrackingOK) {
if (inOK) {
mListener.colorChanged(fgColor , bgColor);
}
mTrackingOK = false; // so we draw w/o halo
invalidate();
}
break;
}
return true;
}
}
public ColorPickerDialog(Context context, OnColorChangedListener listener, int fgColor , int bgColor , boolean bgmode , String title ) {
super(context);
mListener = listener;
mBgMode = bgmode;
mBgColor = bgColor;
mFgColor = fgColor;
mTitle = title;
}
@SuppressWarnings("deprecation")
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
OnColorChangedListener l = new OnColorChangedListener() {
public void colorChanged(int fg , int bg) {
mListener.colorChanged( fg , bg );
dismiss();
}
};
ViewGroup.LayoutParams lp = new ViewGroup.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT);
setContentView(new ColorPickerView(getContext(), l, mFgColor , mBgColor , mBgMode ), lp);
setTitle(mTitle);
}
}
