/*
* Copyright (C) 2011 Sergey Margaritov
*
* Licensed 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.
*/
package net.margaritov.preference.colorpicker;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Bitmap;
import android.graphics.Bitmap.Config;
import android.graphics.Color;
import android.os.Bundle;
import android.os.Parcel;
import android.os.Parcelable;
import android.preference.Preference;
import android.util.AttributeSet;
import android.view.View;
import android.widget.ImageView;
import android.widget.LinearLayout;
/**
* A preference type that allows a user to choose a time
*
* @author Sergey Margaritov
*/
public class ColorPickerPreference
extends
Preference
implements
Preference.OnPreferenceClickListener,
ColorPickerDialog.OnColorChangedListener {
View mView;
ColorPickerDialog mDialog;
private int mValue = Color.BLACK;
private float mDensity = 0;
private boolean mAlphaSliderEnabled = false;
private boolean mHexValueEnabled = false;
public ColorPickerPreference(Context context) {
super(context);
init(context, null);
}
public ColorPickerPreference(Context context, AttributeSet attrs) {
super(context, attrs);
init(context, attrs);
}
public ColorPickerPreference(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
init(context, attrs);
}
/**Method edited by
* @author Anna Berkovitch
* added functionality to accept hex string as defaultValue
* and to properly persist resources reference string, such as @color/someColor
* previously persisted 0*/
@Override
protected Object onGetDefaultValue(TypedArray a, int index) {
int colorInt;
String mHexDefaultValue = a.getString(index);
if (mHexDefaultValue != null && mHexDefaultValue.startsWith("#")) {
colorInt = convertToColorInt(mHexDefaultValue);
return colorInt;
} else {
return a.getColor(index, Color.BLACK);
}
}
@Override
protected void onSetInitialValue(boolean restoreValue, Object defaultValue) {
onColorChanged(restoreValue ? getPersistedInt(mValue) : (Integer) defaultValue);
}
private void init(Context context, AttributeSet attrs) {
mDensity = getContext().getResources().getDisplayMetrics().density;
setOnPreferenceClickListener(this);
if (attrs != null) {
mAlphaSliderEnabled = attrs.getAttributeBooleanValue(null, "alphaSlider", false);
mHexValueEnabled = attrs.getAttributeBooleanValue(null, "hexValue", false);
}
}
@Override
protected void onBindView(View view) {
super.onBindView(view);
mView = view;
setPreviewColor();
}
private void setPreviewColor() {
if (mView == null) return;
ImageView iView = new ImageView(getContext());
LinearLayout widgetFrameView = ((LinearLayout) mView.findViewById(android.R.id.widget_frame));
if (widgetFrameView == null) return;
widgetFrameView.setVisibility(View.VISIBLE);
widgetFrameView.setPadding(
widgetFrameView.getPaddingLeft(),
widgetFrameView.getPaddingTop(),
(int) (mDensity * 8),
widgetFrameView.getPaddingBottom()
);
// remove already create preview image
int count = widgetFrameView.getChildCount();
if (count > 0) {
widgetFrameView.removeViews(0, count);
}
widgetFrameView.addView(iView);
widgetFrameView.setMinimumWidth(0);
iView.setBackgroundDrawable(new AlphaPatternDrawable((int) (5 * mDensity)));
iView.setImageBitmap(getPreviewBitmap());
}
private Bitmap getPreviewBitmap() {
int d = (int) (mDensity * 31); //30dip
int color = mValue;
Bitmap bm = Bitmap.createBitmap(d, d, Config.ARGB_8888);
int w = bm.getWidth();
int h = bm.getHeight();
int c = color;
for (int i = 0; i < w; i++) {
for (int j = i; j < h; j++) {
c = (i <= 1 || j <= 1 || i >= w - 2 || j >= h - 2) ? Color.GRAY : color;
bm.setPixel(i, j, c);
if (i != j) {
bm.setPixel(j, i, c);
}
}
}
return bm;
}
@Override
public void onColorChanged(int color) {
if (isPersistent()) {
persistInt(color);
}
mValue = color;
setPreviewColor();
try {
getOnPreferenceChangeListener().onPreferenceChange(this, color);
} catch (NullPointerException e) {
}
}
public boolean onPreferenceClick(Preference preference) {
showDialog(null);
return false;
}
protected void showDialog(Bundle state) {
mDialog = new ColorPickerDialog(getContext(), mValue);
mDialog.setOnColorChangedListener(this);
if (mAlphaSliderEnabled) {
mDialog.setAlphaSliderVisible(true);
}
if (mHexValueEnabled) {
mDialog.setHexValueEnabled(true);
}
if (state != null) {
mDialog.onRestoreInstanceState(state);
}
mDialog.show();
}
/**
* Toggle Alpha Slider visibility (by default it's disabled)
*
* @param enable
*/
public void setAlphaSliderEnabled(boolean enable) {
mAlphaSliderEnabled = enable;
}
/**
* Toggle Hex Value visibility (by default it's disabled)
*
* @param enable
*/
public void setHexValueEnabled(boolean enable) {
mHexValueEnabled = enable;
}
/**
* For custom purposes. Not used by ColorPickerPreferrence
*
* @param color
* @author Unknown
*/
public static String convertToARGB(int color) {
String alpha = Integer.toHexString(Color.alpha(color));
String red = Integer.toHexString(Color.red(color));
String green = Integer.toHexString(Color.green(color));
String blue = Integer.toHexString(Color.blue(color));
if (alpha.length() == 1) {
alpha = "0" + alpha;
}
if (red.length() == 1) {
red = "0" + red;
}
if (green.length() == 1) {
green = "0" + green;
}
if (blue.length() == 1) {
blue = "0" + blue;
}
return "#" + alpha + red + green + blue;
}
/**
* Method currently used by onGetDefaultValue method to
* convert hex string provided in android:defaultValue to color integer.
*
* @param color
* @return A string representing the hex value of color,
* without the alpha value
* @author Charles Rosaaen
*/
public static String convertToRGB(int color) {
String red = Integer.toHexString(Color.red(color));
String green = Integer.toHexString(Color.green(color));
String blue = Integer.toHexString(Color.blue(color));
if (red.length() == 1) {
red = "0" + red;
}
if (green.length() == 1) {
green = "0" + green;
}
if (blue.length() == 1) {
blue = "0" + blue;
}
return "#" + red + green + blue;
}
/**
* For custom purposes. Not used by ColorPickerPreferrence
*
* @param argb
* @throws NumberFormatException
* @author Unknown
*/
public static int convertToColorInt(String argb) throws IllegalArgumentException {
if (!argb.startsWith("#")) {
argb = "#" + argb;
}
return Color.parseColor(argb);
}
@Override
protected Parcelable onSaveInstanceState() {
final Parcelable superState = super.onSaveInstanceState();
if (mDialog == null || !mDialog.isShowing()) {
return superState;
}
final SavedState myState = new SavedState(superState);
myState.dialogBundle = mDialog.onSaveInstanceState();
return myState;
}
@Override
protected void onRestoreInstanceState(Parcelable state) {
if (state == null || !(state instanceof SavedState)) {
// Didn't save state for us in onSaveInstanceState
super.onRestoreInstanceState(state);
return;
}
SavedState myState = (SavedState) state;
super.onRestoreInstanceState(myState.getSuperState());
showDialog(myState.dialogBundle);
}
private static class SavedState extends BaseSavedState {
Bundle dialogBundle;
public SavedState(Parcel source) {
super(source);
dialogBundle = source.readBundle();
}
@Override
public void writeToParcel(Parcel dest, int flags) {
super.writeToParcel(dest, flags);
dest.writeBundle(dialogBundle);
}
public SavedState(Parcelable superState) {
super(superState);
}
@SuppressWarnings("unused")
public static final Parcelable.Creator<SavedState> CREATOR =
new Parcelable.Creator<SavedState>() {
public SavedState createFromParcel(Parcel in) {
return new SavedState(in);
}
public SavedState[] newArray(int size) {
return new SavedState[size];
}
};
}
}
