Mega Code Archive
Color Select Dialog
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//package com.hyperzsoft.utils;
import android.app.Dialog;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.View;
public class ColorSelectDialog extends Dialog {
public interface OnColorChangedListener {
void colorChanged(String key, int color);
}
private OnColorChangedListener mListener;
private int mInitialColor;
private String mKey;
public static class ColorPickerView extends View {
private Paint mPaint;
private float mCurrentHue = 0;
private final int[] mHueBarColors = new int[258];
private OnColorChangedListener mListener;
public void setColor(int color) {
}
public int getColor() {
return getCurrentMainColor();
}
ColorPickerView(Context c, OnColorChangedListener l, int color) {
super(c);
mListener = l;
// Get the current hue from the current color and update the main color field
float[] hsv = new float[3];
Color.colorToHSV(color, hsv);
mCurrentHue = hsv[0];
// Initialize the colors of the hue slider bar
int index = 0;
for (float i=0; i<256; i += 256/42) // Red (#f00) to pink (#f0f)
{
mHueBarColors[index] = Color.rgb(255, 0, (int) i);
index++;
}
for (float i=0; i<256; i += 256/42) // Pink (#f0f) to blue (#00f)
{
mHueBarColors[index] = Color.rgb(255-(int) i, 0, 255);
index++;
}
for (float i=0; i<256; i += 256/42) // Blue (#00f) to light blue (#0ff)
{
mHueBarColors[index] = Color.rgb(0, (int) i, 255);
index++;
}
for (float i=0; i<256; i += 256/42) // Light blue (#0ff) to green (#0f0)
{
mHueBarColors[index] = Color.rgb(0, 255, 255-(int) i);
index++;
}
for (float i=0; i<256; i += 256/42) // Green (#0f0) to yellow (#ff0)
{
mHueBarColors[index] = Color.rgb((int) i, 255, 0);
index++;
}
for (float i=0; i<256; i += 256/42) // Yellow (#ff0) to red (#f00)
{
mHueBarColors[index] = Color.rgb(255, 255-(int) i, 0);
index++;
}
// Initializes the Paint that will draw the View
mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
mPaint.setTextAlign(Paint.Align.CENTER);
mPaint.setTextSize(12);
}
// Get the current selected color from the hue bar
private int getCurrentMainColor()
{
int translatedHue = 255-(int)(mCurrentHue*255/360);
int index = 0;
for (float i=0; i<256; i += 256/42)
{
if (index == translatedHue)
return Color.rgb(255, 0, (int) i);
index++;
}
for (float i=0; i<256; i += 256/42)
{
if (index == translatedHue)
return Color.rgb(255-(int) i, 0, 255);
index++;
}
for (float i=0; i<256; i += 256/42)
{
if (index == translatedHue)
return Color.rgb(0, (int) i, 255);
index++;
}
for (float i=0; i<256; i += 256/42)
{
if (index == translatedHue)
return Color.rgb(0, 255, 255-(int) i);
index++;
}
for (float i=0; i<256; i += 256/42)
{
if (index == translatedHue)
return Color.rgb((int) i, 255, 0);
index++;
}
for (float i=0; i<256; i += 256/42)
{
if (index == translatedHue)
return Color.rgb(255, 255-(int) i, 0);
index++;
}
return Color.RED;
}
@Override
protected void onDraw(Canvas canvas) {
int translatedHue = 255-(int)(mCurrentHue*255/360);
// Display all the colors of the hue bar with lines
for (int x=0; x<256; x++)
{
// If this is not the current selected hue, display the actual color
if (translatedHue != x)
{
mPaint.setColor(mHueBarColors[x]);
mPaint.setStrokeWidth(2);
}
else // else display a slightly larger black line
{
mPaint.setColor(Color.BLACK);
mPaint.setStrokeWidth(3);
}
canvas.drawLine((x*2)+10, 0, (x*2)+10, 40, mPaint);
}
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
//setMeasuredDimension(276, 60);
setMeasuredDimension(532, 60);
}
@Override
public boolean onTouchEvent(MotionEvent event) {
if (event.getAction() != MotionEvent.ACTION_DOWN) return true;
float x = event.getX();
float y = event.getY();
//the touch event is located in the hue bar
if (x > 10 && x < 522 && y > 0 && y < 40)
{
// Update the main field colors
mCurrentHue = (255-(x/2))*360/255;
mListener.colorChanged("", getCurrentMainColor());
// Force the redraw of the dialog
invalidate();
}
return true;
}
}
public ColorSelectDialog(Context context, OnColorChangedListener listener, String key, int initialColor) {
super(context);
mListener = listener;
mKey = key;
mInitialColor = initialColor;
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
OnColorChangedListener l = new OnColorChangedListener() {
public void colorChanged(String key, int color) {
mListener.colorChanged(mKey, color);
dismiss();
}
};
setContentView(new ColorPickerView(getContext(), l, mInitialColor));
setTitle("Select Color");
}
}
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