/*
* 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 com.zapta.apps.maniana.util.ColorUtil;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Bitmap.Config;
import android.graphics.Color;
import android.preference.Preference;
import android.util.AttributeSet;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
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 {
private static final boolean PRE_API_14 = android.os.Build.VERSION.SDK_INT < 14;
View mView;
int mDefaultValue = Color.BLACK;
private int mValue = Color.BLACK;
private float mDensity = 0;
private boolean mAlphaSliderEnabled = false;
private boolean mJustHsNoV = false;
private float mMaxSaturation = 1.0f;
private static final String androidns = "http://schemas.android.com/apk/res/android";
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);
}
// TAL: From Preference
@Override
protected void onSetInitialValue(boolean restoreValue, Object defaultValue) {
onColorChanged(restoreValue ? getValue() : (Integer) defaultValue);
}
private void init(Context context, AttributeSet attrs) {
mDensity = getContext().getResources().getDisplayMetrics().density;
setOnPreferenceClickListener(this);
if (attrs != null) {
String defaultValue = attrs.getAttributeValue(androidns, "defaultValue");
if (defaultValue.startsWith("#")) {
try {
mDefaultValue = convertToColorInt(defaultValue);
} catch (NumberFormatException e) {
Log.e("ColorPickerPreference", "Wrong color: " + defaultValue);
mDefaultValue = convertToColorInt("#FF000000");
}
} else {
int resourceId = attrs.getAttributeResourceValue(androidns, "defaultValue", 0);
if (resourceId != 0) {
mDefaultValue = context.getResources().getInteger(resourceId);
}
}
// TODO: make the XML attribute to work and use them instead of the setting methods
// below.
// mAlphaSliderEnabled = attrs.getAttributeBooleanValue(null, "alphaSlider", false);
// mJustHsNoV = attrs.getAttributeBooleanValue(null, "justHsNoV", false);
}
mValue = mDefaultValue;
}
@Override
protected void onBindView(View view) {
super.onBindView(view);
mView = view;
setPreviewColor();
}
// TAL: fixed for API V14.
private void setPreviewColor() {
if (mView == null) {
return;
}
LinearLayout widgetFrameView = ((LinearLayout) mView
.findViewById(android.R.id.widget_frame));
if (widgetFrameView == null) {
return;
}
// TAL: required starting from API 14
widgetFrameView.setVisibility(View.VISIBLE);
final int rightPaddingDip = PRE_API_14 ? 8 : 5;
widgetFrameView.setPadding(widgetFrameView.getPaddingLeft(),
widgetFrameView.getPaddingTop(), (int) (mDensity * rightPaddingDip),
widgetFrameView.getPaddingBottom());
// Tal: uncomment to examine the location of the color preview within the widget frame.
// widgetFrameView.setBackgroundColor(0xff123456);
// Remove previously created preview image.
// Can we the reuse existing image view?
int count = widgetFrameView.getChildCount();
if (count > 0) {
widgetFrameView.removeViews(0, count);
}
// Image view with check board background that that wraps to the bitmap size.
ImageView iView = new ImageView(getContext());
iView.setBackgroundDrawable(new AlphaPatternDrawable((int) (5 * mDensity)));
iView.setImageBitmap(getPreviewBitmap());
iView.setLayoutParams(new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT));
widgetFrameView.addView(iView);
}
private Bitmap getPreviewBitmap() {
// NOTE: on ICS and above we display a smaller color preview to match the
// general style.
int d = (int) (mDensity * (PRE_API_14 ? 31 : 22));
// If disabled we simulate a semi transparent black overlay.
// NOTE: could simplify compositeColor for the special case where argb2 is aa000000;
int color = isEnabled() ? getValue() : ColorUtil.compositeColor(getValue(), 0xaa000000);
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;
}
public int getValue() {
try {
if (isPersistent()) {
mValue = getPersistedInt(mDefaultValue);
}
} catch (ClassCastException e) {
mValue = mDefaultValue;
}
return mValue;
}
// TAL: called by local dialog
@Override
public void onColorChanged(int color) {
if (isPersistent()) {
persistInt(color);
}
mValue = color;
setPreviewColor();
try {
getOnPreferenceChangeListener().onPreferenceChange(this, color);
} catch (NullPointerException e) {
}
}
@Override
public boolean onPreferenceClick(Preference preference) {
ColorPickerDialog picker = new ColorPickerDialog(getContext(), getValue());
// TAL: added propagation of title to dialog
picker.setTitle(getTitle());
picker.setOnColorChangedListener(this);
if (mAlphaSliderEnabled) {
picker.setAlphaSliderVisible(true);
}
if (mJustHsNoV) {
picker.setJustHsNoV(mMaxSaturation);
}
picker.show();
return false;
}
/**
* Toggle Alpha Slider visibility (by default it's disabled)
*
* @param enable
*/
public void setAlphaSliderEnabled(boolean enable) {
mAlphaSliderEnabled = enable;
}
public void setJustHsNoV(float maxSaturation) {
mJustHsNoV = true;
mMaxSaturation = maxSaturation;
}
/**
* 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;
}
/**
* For custom purposes. Not used by ColorPickerPreferrence
*
* @param argb
* @throws NumberFormatException
* @author Unknown
*/
public static int convertToColorInt(String argb) throws NumberFormatException {
if (argb.startsWith("#")) {
argb = argb.replace("#", "");
}
int alpha = -1, red = -1, green = -1, blue = -1;
if (argb.length() == 8) {
alpha = Integer.parseInt(argb.substring(0, 2), 16);
red = Integer.parseInt(argb.substring(2, 4), 16);
green = Integer.parseInt(argb.substring(4, 6), 16);
blue = Integer.parseInt(argb.substring(6, 8), 16);
} else if (argb.length() == 6) {
alpha = 255;
red = Integer.parseInt(argb.substring(0, 2), 16);
green = Integer.parseInt(argb.substring(2, 4), 16);
blue = Integer.parseInt(argb.substring(4, 6), 16);
}
return Color.argb(alpha, red, green, blue);
}
}