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/*
* Copyright (C) 2010 Daniel Nilsson Copyright (C) 2012 THe CyanogenMod Project
* 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 org.lineageos.eleven.widgets;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.RectF;
import android.util.AttributeSet;
import android.view.View;
/**
* This class draws a panel which which will be filled with a color which can be
* set. It can be used to show the currently selected color which you will get
* from the {@link ColorPickerView}.
*
* @author Daniel Nilsson
*/
public class ColorPanelView extends View {
/**
* The width in pixels of the border surrounding the color panel.
*/
private final static float BORDER_WIDTH_PX = 1;
private static float mDensity = 1f;
private int mBorderColor = 0xff6E6E6E;
private int mColor = 0xff000000;
private Paint mBorderPaint;
private Paint mColorPaint;
private RectF mDrawingRect;
private RectF mColorRect;
private AlphaPatternDrawable mAlphaPattern;
public ColorPanelView(final Context context) {
this(context, null);
}
public ColorPanelView(final Context context, final AttributeSet attrs) {
this(context, attrs, 0);
}
public ColorPanelView(final Context context, final AttributeSet attrs, final int defStyle) {
super(context, attrs, defStyle);
init();
}
private void init() {
mBorderPaint = new Paint();
mColorPaint = new Paint();
mDensity = getContext().getResources().getDisplayMetrics().density;
}
/**
* {@inheritDoc}
*/
@Override
protected void onDraw(final Canvas canvas) {
final RectF rect = mColorRect;
if (BORDER_WIDTH_PX > 0) {
mBorderPaint.setColor(mBorderColor);
canvas.drawRect(mDrawingRect, mBorderPaint);
}
if (mAlphaPattern != null) {
mAlphaPattern.draw(canvas);
}
mColorPaint.setColor(mColor);
canvas.drawRect(rect, mColorPaint);
}
/**
* {@inheritDoc}
*/
@Override
protected void onMeasure(final int widthMeasureSpec, final int heightMeasureSpec) {
final int width = MeasureSpec.getSize(widthMeasureSpec);
final int height = MeasureSpec.getSize(heightMeasureSpec);
setMeasuredDimension(width, height);
}
/**
* {@inheritDoc}
*/
@Override
protected void onSizeChanged(final int w, final int h, final int oldw, final int oldh) {
super.onSizeChanged(w, h, oldw, oldh);
mDrawingRect = new RectF();
mDrawingRect.left = getPaddingLeft();
mDrawingRect.right = w - getPaddingRight();
mDrawingRect.top = getPaddingTop();
mDrawingRect.bottom = h - getPaddingBottom();
setUpColorRect();
}
private void setUpColorRect() {
final RectF dRect = mDrawingRect;
final float left = dRect.left + BORDER_WIDTH_PX;
final float top = dRect.top + BORDER_WIDTH_PX;
final float bottom = dRect.bottom - BORDER_WIDTH_PX;
final float right = dRect.right - BORDER_WIDTH_PX;
mColorRect = new RectF(left, top, right, bottom);
mAlphaPattern = new AlphaPatternDrawable((int)(5 * mDensity));
mAlphaPattern.setBounds(Math.round(mColorRect.left), Math.round(mColorRect.top),
Math.round(mColorRect.right), Math.round(mColorRect.bottom));
}
/**
* Set the color that should be shown by this view.
*
* @param color
*/
public void setColor(final int color) {
mColor = color;
invalidate();
}
/**
* Get the color currently show by this view.
*
* @return
*/
public int getColor() {
return mColor;
}
/**
* Set the color of the border surrounding the panel.
*
* @param color
*/
public void setBorderColor(final int color) {
mBorderColor = color;
invalidate();
}
/**
* Get the color of the border surrounding the panel.
*/
public int getBorderColor() {
return mBorderColor;
}
}
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