Android Open Source - CompleteActionPlus Color Picker

From Project

Back to project page CompleteActionPlus.
License

The source code is released under:
## Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International Public License ## By exercising the Licensed Rights (defined below), You accept and agree to be bound by the terms and condi...
If you think the Android project CompleteActionPlus listed in this page is inappropriate, such as containing malicious code/tools or violating the copyright, please email info at java2s dot com, thanks.
Java Source Code

package hk.valenta.completeactionplus;
//from  ww w  .ja  va  2s. c  o m
import android.annotation.SuppressLint;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.SharedPreferences;
import android.content.DialogInterface.OnCancelListener;
import android.content.DialogInterface.OnClickListener;
import android.graphics.Color;
import android.graphics.ComposeShader;
import android.graphics.LinearGradient;
import android.graphics.PorterDuff;
import android.graphics.Shader.TileMode;
import android.graphics.drawable.ShapeDrawable;
import android.graphics.drawable.shapes.RectShape;
import android.util.DisplayMetrics;
import android.util.TypedValue;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewTreeObserver;
import android.view.View.OnTouchListener;
import android.view.ViewTreeObserver.OnGlobalLayoutListener;
import android.view.inputmethod.EditorInfo;
import android.view.inputmethod.InputMethodManager;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.TextView.OnEditorActionListener;

public class ColorPicker {
  // interface
  public interface OnResultListener {
    void OnCancel(ColorPicker dialog);
    void OnDone(ColorPicker dialog, int color);
  }
  
  // listener
  final OnResultListener listener;
  final float[] currentColorHsv = new float[3];
  final View hueView;
  final View satView;
  final View newColor;
  final AlertDialog alert;
  final ImageView cursorHue;
  final ImageView cursorSat;
  final EditText hexEdit;
  
  // constructor
  @SuppressWarnings("deprecation")
  @SuppressLint("WorldReadableFiles")
  public ColorPicker(final Context context, int color, OnResultListener listener) {
    // setup properties
    this.listener = listener;
    Color.colorToHSV(color, currentColorHsv);
    
    // setup views
    final View layer = LayoutInflater.from(context).inflate(R.layout.fragment_color_picker, null);
    hueView = layer.findViewById(R.id.fragment_color_picker_hue);
    satView = layer.findViewById(R.id.fragment_color_picker_sat);
    View origColor = layer.findViewById(R.id.fragment_color_orig);
    cursorHue = (ImageView)layer.findViewById(R.id.fragment_color_cursor_hue);
    cursorSat = (ImageView)layer.findViewById(R.id.fragment_color_cursor_sat);
    origColor.setBackgroundColor(color);
    newColor = layer.findViewById(R.id.fragment_color_new);
    newColor.setBackgroundColor(color);
    hexEdit = (EditText)layer.findViewById(R.id.fragment_color_hexEdit);
    drawSat(currentColorHsv[0]);
    hexEdit.setText(String.format("#%06X", (0xFFFFFF & color)));
    
    // hue slider
    hueView.setOnTouchListener(new OnTouchListener() {
      
      @Override
      public boolean onTouch(View view, MotionEvent event) {
        // only events what we want
        int action = event.getAction();
        if (action == MotionEvent.ACTION_MOVE || action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_UP) {
          // get position
          float posX = event.getX();
          int width = view.getMeasuredWidth();
          if (posX < 0) posX = 0;
          if (posX > width) posX = width - 0.001f;
          
          // calculate hue
          float hue = 360.0f / width * posX;
          currentColorHsv[0] = hue;
          drawSat(hue);
          newColor.setBackgroundColor(Color.HSVToColor(currentColorHsv));
          hexEdit.setText(String.format("#%06X", (0xFFFFFF & Color.HSVToColor(currentColorHsv))));
          moveHueCursor(posX);
          
          return true;
        }
        
        return false;
      }
    });
    
    // sat slider
    satView.setOnTouchListener(new OnTouchListener() {
      
      @Override
      public boolean onTouch(View view, MotionEvent event) {
        // only events what we want
        int action = event.getAction();
        if (action == MotionEvent.ACTION_MOVE || action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_UP) {
          // get position
          float posX = event.getX();
          float posY = event.getY();
          int width = view.getMeasuredWidth();
          int height = view.getMeasuredHeight();
          if (posX < 0) posX = 0;
          if (posX > width) posX = width;
          if (posY < 0) posY = 0;
          if (posY > height) posY = height;
          
          // set it
          currentColorHsv[1] = 1.0f / width * posX;
          currentColorHsv[2] = 1.0f - (1.0f / height * posY);          
          newColor.setBackgroundColor(Color.HSVToColor(currentColorHsv));
          hexEdit.setText(String.format("#%06X", (0xFFFFFF & Color.HSVToColor(currentColorHsv))));
          moveSatCursor(posX, posY);
          
          return true;
        }
        
        return false;
      }
    });
    
    // set color in hex
    hexEdit.setOnEditorActionListener(new OnEditorActionListener() {
      
      @Override
      public boolean onEditorAction(TextView view, int actionId, KeyEvent event) {
        // enter
        if (actionId == EditorInfo.IME_ACTION_DONE) {

          try {
            // parse color
            String inputColor = hexEdit.getText().toString();
            if (!inputColor.startsWith("#")) {
              // add # in front
              inputColor = new StringBuilder("#").append(inputColor).toString();
              hexEdit.setText(inputColor);
            }
            int color = Color.parseColor(inputColor);
            
            // let's update
            Color.colorToHSV(color, currentColorHsv);
            newColor.setBackgroundColor(color);            
            drawSat(currentColorHsv[0]);
            
            // move cursors
            moveHueCursor(currentColorHsv[0] * hueView.getMeasuredWidth() / 360.0f);
            moveSatCursor(currentColorHsv[1] * satView.getMeasuredWidth() / 1.0f, (1.0f - currentColorHsv[2]) * satView.getMeasuredHeight() / 1.0f);
          } catch (Exception ex) {
            // invalid color
            hexEdit.setText(String.format("#%06X", (0xFFFFFF & Color.HSVToColor(currentColorHsv))));
          }
          
          // hide keyboard
          ((InputMethodManager)hexEdit.getContext().getSystemService(Context.INPUT_METHOD_SERVICE))
            .hideSoftInputFromWindow(hexEdit.getWindowToken(), 0);
          
          return true;
        } else {
          return false;
        }
      }
    });
    
    // get current configuration
    SharedPreferences pref = context.getSharedPreferences("config", Context.MODE_WORLD_READABLE);
    int currentTheme = EnumConvert.themeIndex(pref.getString("AppTheme", "Light"));
//    int theme = android.R.style.Theme_Holo_Light_NoActionBar;
    if (currentTheme == 1) {
//      theme = android.R.style.Theme_Holo_NoActionBar;
      ImageView arrow = (ImageView)layer.findViewById(R.id.fragment_color_arrow);
      arrow.setImageResource(R.drawable.icon_arrow_white);
      RelativeLayout origBorder = (RelativeLayout)layer.findViewById(R.id.fragment_color_orig_border);
      origBorder.setBackgroundColor(Color.parseColor("#BEBEBE"));
      RelativeLayout newBorder = (RelativeLayout)layer.findViewById(R.id.fragment_color_new_border);
      newBorder.setBackgroundColor(Color.parseColor("#BEBEBE"));
    }
    
    // setup alert
    alert = new AlertDialog.Builder(context)
        .setPositiveButton(android.R.string.ok, new OnClickListener() {
          
          @Override
          public void onClick(DialogInterface dialog, int which) {
            // success
            if (ColorPicker.this.listener != null) {
              ColorPicker.this.listener.OnDone(ColorPicker.this, Color.HSVToColor(currentColorHsv));
            }
          }
        })
        .setNegativeButton(android.R.string.cancel, new OnClickListener() {
          
          @Override
          public void onClick(DialogInterface dialog, int which) {
            // cancel
            if (ColorPicker.this.listener != null) {
              ColorPicker.this.listener.OnCancel(ColorPicker.this);
            }
          }
        })
        .setOnCancelListener(new OnCancelListener() {
          
          @Override
          public void onCancel(DialogInterface dialog) {
            // cancel
            if (ColorPicker.this.listener != null) {
              ColorPicker.this.listener.OnCancel(ColorPicker.this);
            }
          }
        }).create();  
    alert.setView(layer);
    
    // initialise cursors
    ViewTreeObserver vto = layer.getViewTreeObserver();
    vto.addOnGlobalLayoutListener(new OnGlobalLayoutListener() {
      @Override
      public void onGlobalLayout() {
        // Initialise cursors
        moveHueCursor(currentColorHsv[0] * hueView.getMeasuredWidth() / 360.0f);
        moveSatCursor(currentColorHsv[1] * satView.getMeasuredWidth() / 1.0f, (1.0f - currentColorHsv[2]) * satView.getMeasuredHeight() / 1.0f);
        layer.getViewTreeObserver().removeOnGlobalLayoutListener(this);
      }
    });
  }
  
  private void drawSat(float hue) {
    DisplayMetrics metrics = satView.getContext().getResources().getDisplayMetrics();
    ShapeDrawable shape = new ShapeDrawable(new RectShape());
    LinearGradient bw = new LinearGradient(0.f, 0.f, 0.f, (int)TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 256, metrics),
        0xffffffff, 0xff000000, TileMode.CLAMP);
    LinearGradient my = new LinearGradient(0.f, 0.f, (int)TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 256, metrics), 0.f,
        0xffffffff, Color.HSVToColor(new float[] { hue, 1.f, 1.f }), TileMode.CLAMP);    
    shape.getPaint().setShader(new ComposeShader(bw, my, PorterDuff.Mode.MULTIPLY));
    satView.setBackground(shape);
  }
  
  private void moveHueCursor(float posX) {
    RelativeLayout.LayoutParams params = (RelativeLayout.LayoutParams)cursorHue.getLayoutParams();
    params.leftMargin = (int)(hueView.getLeft() + posX - (cursorHue.getMeasuredWidth() / 2));
    cursorHue.setLayoutParams(params);
  }
  
  private void moveSatCursor(float posX, float posY) {
    RelativeLayout.LayoutParams params = (RelativeLayout.LayoutParams)cursorSat.getLayoutParams();
    params.leftMargin = (int)(satView.getLeft() + posX - (cursorSat.getMeasuredWidth() / 2));
    params.topMargin = (int)(satView.getTop() + posY - (cursorSat.getMeasuredHeight() / 2));
    cursorSat.setLayoutParams(params);
  }
  
  public void show() {
    alert.show();
  }
}
Java Source Code List
