mirror of
https://github.com/peterosterlund2/droidfish.git
synced 2025-12-18 19:52:19 +01:00
DroidFish: Added color picker code from Daniel Nilsson and Sergey Margaritov, adapted to DroidFish by Leo Mayer.
This commit is contained in:
Peter Osterlund
@@ -0,0 +1,128 @@
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/*
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* Copyright (C) 2010 Daniel Nilsson
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package net.margaritov.preference.colorpicker;
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import android.graphics.Bitmap;
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import android.graphics.Bitmap.Config;
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import android.graphics.Canvas;
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import android.graphics.ColorFilter;
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import android.graphics.Paint;
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import android.graphics.Rect;
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import android.graphics.drawable.Drawable;
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/**
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* This drawable that draws a simple white and gray chessboard pattern.
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* It's pattern you will often see as a background behind a
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* partly transparent image in many applications.
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* @author Daniel Nilsson
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*/
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public class AlphaPatternDrawable extends Drawable {
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private int mRectangleSize = 10;
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private Paint mPaint = new Paint();
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private Paint mPaintWhite = new Paint();
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private Paint mPaintGray = new Paint();
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private int numRectanglesHorizontal;
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private int numRectanglesVertical;
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/**
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* Bitmap in which the pattern will be cahched.
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*/
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private Bitmap mBitmap;
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public AlphaPatternDrawable(int rectangleSize) {
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mRectangleSize = rectangleSize;
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mPaintWhite.setColor(0xffffffff);
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mPaintGray.setColor(0xffcbcbcb);
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}
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@Override
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public void draw(Canvas canvas) {
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canvas.drawBitmap(mBitmap, null, getBounds(), mPaint);
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}
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@Override
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public int getOpacity() {
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return 0;
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}
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@Override
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public void setAlpha(int alpha) {
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throw new UnsupportedOperationException("Alpha is not supported by this drawwable.");
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}
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@Override
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public void setColorFilter(ColorFilter cf) {
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throw new UnsupportedOperationException("ColorFilter is not supported by this drawwable.");
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}
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@Override
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protected void onBoundsChange(Rect bounds) {
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super.onBoundsChange(bounds);
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int height = bounds.height();
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int width = bounds.width();
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numRectanglesHorizontal = (int) Math.ceil((width / mRectangleSize));
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numRectanglesVertical = (int) Math.ceil(height / mRectangleSize);
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generatePatternBitmap();
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}
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/**
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* This will generate a bitmap with the pattern
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* as big as the rectangle we were allow to draw on.
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* We do this to chache the bitmap so we don't need to
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* recreate it each time draw() is called since it
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* takes a few milliseconds.
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*/
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private void generatePatternBitmap(){
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if(getBounds().width() <= 0 || getBounds().height() <= 0){
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return;
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}
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mBitmap = Bitmap.createBitmap(getBounds().width(), getBounds().height(), Config.ARGB_8888);
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Canvas canvas = new Canvas(mBitmap);
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Rect r = new Rect();
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boolean verticalStartWhite = true;
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for (int i = 0; i <= numRectanglesVertical; i++) {
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boolean isWhite = verticalStartWhite;
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for (int j = 0; j <= numRectanglesHorizontal; j++) {
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r.top = i * mRectangleSize;
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r.left = j * mRectangleSize;
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r.bottom = r.top + mRectangleSize;
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r.right = r.left + mRectangleSize;
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canvas.drawRect(r, isWhite ? mPaintWhite : mPaintGray);
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isWhite = !isWhite;
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}
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verticalStartWhite = !verticalStartWhite;
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}
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}
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}
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@@ -0,0 +1,148 @@
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/*
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* Copyright (C) 2010 Daniel Nilsson
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package net.margaritov.preference.colorpicker;
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import org.petero.droidfish.R;
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import android.app.Dialog;
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import android.content.Context;
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import android.graphics.PixelFormat;
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import android.os.Bundle;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.widget.LinearLayout;
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public class ColorPickerDialog
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extends
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Dialog
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implements
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ColorPickerView.OnColorChangedListener,
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View.OnClickListener {
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private ColorPickerView mColorPicker;
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private ColorPickerPanelView mOldColor;
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private ColorPickerPanelView mNewColor;
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private OnColorChangedListener mListener;
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private CharSequence additionalInfo;
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public interface OnColorChangedListener {
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public void onColorChanged(int color);
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}
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public ColorPickerDialog(Context context, int initialColor,
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CharSequence additionalInfo) {
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super(context);
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this.additionalInfo = additionalInfo;
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init(initialColor);
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}
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private void init(int color) {
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// To fight color banding.
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getWindow().setFormat(PixelFormat.RGBA_8888);
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setUp(color);
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}
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private void setUp(int color) {
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LayoutInflater inflater = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
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View layout = inflater.inflate(R.layout.dialog_color_picker, null);
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setContentView(layout);
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setTitle(getContext().getText(R.string.prefs_colors_title) + " '"
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+ additionalInfo + "'");
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mColorPicker = (ColorPickerView) layout.findViewById(R.id.color_picker_view);
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mOldColor = (ColorPickerPanelView) layout.findViewById(R.id.old_color_panel);
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mNewColor = (ColorPickerPanelView) layout.findViewById(R.id.new_color_panel);
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((LinearLayout) mOldColor.getParent()).setPadding(
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Math.round(mColorPicker.getDrawingOffset()),
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0,
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Math.round(mColorPicker.getDrawingOffset()),
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0
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);
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mOldColor.setOnClickListener(this);
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mNewColor.setOnClickListener(this);
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mColorPicker.setOnColorChangedListener(this);
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mOldColor.setColor(color);
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mColorPicker.setColor(color, true);
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}
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@Override
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public void onColorChanged(int color) {
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mNewColor.setColor(color);
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/*
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if (mListener != null) {
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mListener.onColorChanged(color);
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}
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*/
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}
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public void setAlphaSliderVisible(boolean visible) {
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mColorPicker.setAlphaSliderVisible(visible);
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}
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/**
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* Set a OnColorChangedListener to get notified when the color
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* selected by the user has changed.
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* @param listener
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*/
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public void setOnColorChangedListener(OnColorChangedListener listener){
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mListener = listener;
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}
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public int getColor() {
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return mColorPicker.getColor();
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}
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@Override
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public void onClick(View v) {
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if (v.getId() == R.id.new_color_panel) {
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if (mListener != null) {
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mListener.onColorChanged(mNewColor.getColor());
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}
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}
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dismiss();
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}
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@Override
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public Bundle onSaveInstanceState() {
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Bundle state = super.onSaveInstanceState();
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state.putInt("old_color", mOldColor.getColor());
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state.putInt("new_color", mNewColor.getColor());
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return state;
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}
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@Override
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public void onRestoreInstanceState(Bundle savedInstanceState) {
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super.onRestoreInstanceState(savedInstanceState);
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mOldColor.setColor(savedInstanceState.getInt("old_color"));
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mColorPicker.setColor(savedInstanceState.getInt("new_color"), true);
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}
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}
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@@ -0,0 +1,171 @@
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/*
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* Copyright (C) 2010 Daniel Nilsson
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package net.margaritov.preference.colorpicker;
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import android.content.Context;
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import android.graphics.Canvas;
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import android.graphics.Paint;
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import android.graphics.RectF;
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import android.util.AttributeSet;
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import android.view.View;
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/**
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* This class draws a panel which which will be filled with a color which can be set.
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* It can be used to show the currently selected color which you will get from
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* the {@link ColorPickerView}.
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* @author Daniel Nilsson
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*
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*/
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public class ColorPickerPanelView extends View {
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/**
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* The width in pixels of the border
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* surrounding the color panel.
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*/
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private final static float BORDER_WIDTH_PX = 1;
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private float mDensity = 1f;
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private int mBorderColor = 0xff6E6E6E;
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private int mColor = 0xff000000;
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private Paint mBorderPaint;
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private Paint mColorPaint;
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private RectF mDrawingRect;
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private RectF mColorRect;
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private AlphaPatternDrawable mAlphaPattern;
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public ColorPickerPanelView(Context context){
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this(context, null);
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}
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public ColorPickerPanelView(Context context, AttributeSet attrs){
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this(context, attrs, 0);
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}
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public ColorPickerPanelView(Context context, AttributeSet attrs, int defStyle) {
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super(context, attrs, defStyle);
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init();
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}
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private void init(){
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mBorderPaint = new Paint();
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mColorPaint = new Paint();
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mDensity = getContext().getResources().getDisplayMetrics().density;
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}
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@Override
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protected void onDraw(Canvas canvas) {
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final RectF rect = mColorRect;
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if(BORDER_WIDTH_PX > 0){
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mBorderPaint.setColor(mBorderColor);
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canvas.drawRect(mDrawingRect, mBorderPaint);
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}
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if(mAlphaPattern != null){
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mAlphaPattern.draw(canvas);
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}
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mColorPaint.setColor(mColor);
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canvas.drawRect(rect, mColorPaint);
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}
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@Override
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protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
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int width = MeasureSpec.getSize(widthMeasureSpec);
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int height = MeasureSpec.getSize(heightMeasureSpec);
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setMeasuredDimension(width, height);
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}
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@Override
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protected void onSizeChanged(int w, int h, int oldw, int oldh) {
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super.onSizeChanged(w, h, oldw, oldh);
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mDrawingRect = new RectF();
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mDrawingRect.left = getPaddingLeft();
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mDrawingRect.right = w - getPaddingRight();
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mDrawingRect.top = getPaddingTop();
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mDrawingRect.bottom = h - getPaddingBottom();
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setUpColorRect();
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}
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private void setUpColorRect(){
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final RectF dRect = mDrawingRect;
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float left = dRect.left + BORDER_WIDTH_PX;
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float top = dRect.top + BORDER_WIDTH_PX;
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float bottom = dRect.bottom - BORDER_WIDTH_PX;
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float right = dRect.right - BORDER_WIDTH_PX;
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mColorRect = new RectF(left,top, right, bottom);
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mAlphaPattern = new AlphaPatternDrawable((int)(5 * mDensity));
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mAlphaPattern.setBounds(
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Math.round(mColorRect.left),
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Math.round(mColorRect.top),
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Math.round(mColorRect.right),
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Math.round(mColorRect.bottom)
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);
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}
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/**
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* Set the color that should be shown by this view.
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* @param color
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*/
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public void setColor(int color){
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mColor = color;
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invalidate();
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}
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/**
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* Get the color currently show by this view.
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* @return
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*/
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public int getColor(){
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return mColor;
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}
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/**
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* Set the color of the border surrounding the panel.
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* @param color
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*/
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public void setBorderColor(int color){
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mBorderColor = color;
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invalidate();
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}
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/**
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* Get the color of the border surrounding the panel.
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*/
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public int getBorderColor(){
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return mBorderColor;
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}
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}
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@@ -0,0 +1,329 @@
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/*
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* Copyright (C) 2011 Sergey Margaritov
|
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*
|
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* 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.
|
||||
*/
|
||||
|
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package net.margaritov.preference.colorpicker;
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import android.content.Context;
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import android.graphics.Bitmap;
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import android.graphics.Bitmap.Config;
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import android.graphics.Color;
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import android.os.Bundle;
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import android.os.Parcel;
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import android.os.Parcelable;
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import android.preference.Preference;
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import android.util.AttributeSet;
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import android.util.Log;
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import android.view.View;
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import android.widget.ImageView;
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import android.widget.LinearLayout;
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/**
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* A preference type that allows a user to choose a time
|
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* @author Sergey Margaritov
|
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*/
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public class ColorPickerPreference
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extends
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Preference
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implements
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Preference.OnPreferenceClickListener,
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ColorPickerDialog.OnColorChangedListener {
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View mView;
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ColorPickerDialog mDialog;
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int mDefaultValue = Color.BLACK;
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private int mValue = Color.BLACK;
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private float mDensity = 0;
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private boolean mAlphaSliderEnabled = false;
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private static final String androidns = "http://schemas.android.com/apk/res/android";
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public ColorPickerPreference(Context context) {
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super(context);
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init(context, null);
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}
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public ColorPickerPreference(Context context, AttributeSet attrs) {
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super(context, attrs);
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init(context, attrs);
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}
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|
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public ColorPickerPreference(Context context, AttributeSet attrs, int defStyle) {
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super(context, attrs, defStyle);
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init(context, attrs);
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}
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@Override
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protected void onSetInitialValue(boolean restoreValue, Object defaultValue) {
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onColorChanged(restoreValue ? getValue() : (Integer) defaultValue);
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}
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private void init(Context context, AttributeSet attrs) {
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mDensity = getContext().getResources().getDisplayMetrics().density;
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setOnPreferenceClickListener(this);
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if (attrs != null) {
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String defaultValue = attrs.getAttributeValue(androidns, "defaultValue");
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if (defaultValue.startsWith("#")) {
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try {
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mDefaultValue = convertToColorInt(defaultValue);
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} catch (NumberFormatException e) {
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Log.e("ColorPickerPreference", "Wrong color: " + defaultValue);
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mDefaultValue = convertToColorInt("#FF000000");
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}
|
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} else {
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int resourceId = attrs.getAttributeResourceValue(androidns, "defaultValue", 0);
|
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if (resourceId != 0) {
|
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mDefaultValue = context.getResources().getInteger(resourceId);
|
||||
}
|
||||
}
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mAlphaSliderEnabled = attrs.getAttributeBooleanValue(null, "alphaSlider", false);
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||||
}
|
||||
mValue = mDefaultValue;
|
||||
}
|
||||
|
||||
@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 = getValue();
|
||||
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()) {
|
||||
/*
|
||||
* doesn't work in DroidFish, cause the values for the color
|
||||
* were stored as Strings [2012-08-30; leo]
|
||||
*/
|
||||
// mValue = getPersistedInt(mDefaultValue);
|
||||
String tmpValue = getPersistedString(mDefaultValue + "");
|
||||
if (tmpValue == null) {
|
||||
mValue = mDefaultValue;
|
||||
} else {
|
||||
try {
|
||||
mValue = Color.parseColor(tmpValue);
|
||||
} catch (IllegalArgumentException e) {
|
||||
mValue = mDefaultValue;
|
||||
} catch (StringIndexOutOfBoundsException e) {
|
||||
mValue = mDefaultValue;
|
||||
}
|
||||
}
|
||||
}
|
||||
} catch (ClassCastException e) {
|
||||
mValue = mDefaultValue;
|
||||
}
|
||||
|
||||
return mValue;
|
||||
}
|
||||
|
||||
@Override
|
||||
public void onColorChanged(int color) {
|
||||
if (isPersistent()) {
|
||||
/* for Droidfish: the colors are stored as strings [2012-08-30; leo] */
|
||||
persistString(convertToARGB(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(), getValue(), getTitle());
|
||||
mDialog.setOnColorChangedListener(this);
|
||||
if (mAlphaSliderEnabled) {
|
||||
mDialog.setAlphaSliderVisible(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;
|
||||
}
|
||||
|
||||
/**
|
||||
* 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);
|
||||
}
|
||||
|
||||
@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];
|
||||
}
|
||||
};
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,952 @@
|
||||
/*
|
||||
* Copyright (C) 2010 Daniel Nilsson
|
||||
*
|
||||
* 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.graphics.Canvas;
|
||||
import android.graphics.Color;
|
||||
import android.graphics.ComposeShader;
|
||||
import android.graphics.LinearGradient;
|
||||
import android.graphics.Paint;
|
||||
import android.graphics.Point;
|
||||
import android.graphics.PorterDuff;
|
||||
import android.graphics.RectF;
|
||||
import android.graphics.Shader;
|
||||
import android.graphics.Paint.Align;
|
||||
import android.graphics.Paint.Style;
|
||||
import android.graphics.Shader.TileMode;
|
||||
import android.util.AttributeSet;
|
||||
import android.view.MotionEvent;
|
||||
import android.view.View;
|
||||
|
||||
/**
|
||||
* Displays a color picker to the user and allow them
|
||||
* to select a color. A slider for the alpha channel is
|
||||
* also available. Enable it by setting
|
||||
* setAlphaSliderVisible(boolean) to true.
|
||||
* @author Daniel Nilsson
|
||||
*/
|
||||
public class ColorPickerView extends View {
|
||||
|
||||
private final static int PANEL_SAT_VAL = 0;
|
||||
private final static int PANEL_HUE = 1;
|
||||
private final static int PANEL_ALPHA = 2;
|
||||
|
||||
/**
|
||||
* The width in pixels of the border
|
||||
* surrounding all color panels.
|
||||
*/
|
||||
private final static float BORDER_WIDTH_PX = 1;
|
||||
|
||||
/**
|
||||
* The width in dp of the hue panel.
|
||||
*/
|
||||
private float HUE_PANEL_WIDTH = 30f;
|
||||
/**
|
||||
* The height in dp of the alpha panel
|
||||
*/
|
||||
private float ALPHA_PANEL_HEIGHT = 20f;
|
||||
/**
|
||||
* The distance in dp between the different
|
||||
* color panels.
|
||||
*/
|
||||
private float PANEL_SPACING = 10f;
|
||||
/**
|
||||
* The radius in dp of the color palette tracker circle.
|
||||
*/
|
||||
private float PALETTE_CIRCLE_TRACKER_RADIUS = 5f;
|
||||
/**
|
||||
* The dp which the tracker of the hue or alpha panel
|
||||
* will extend outside of its bounds.
|
||||
*/
|
||||
private float RECTANGLE_TRACKER_OFFSET = 2f;
|
||||
|
||||
|
||||
private float mDensity = 1f;
|
||||
|
||||
private OnColorChangedListener mListener;
|
||||
|
||||
private Paint mSatValPaint;
|
||||
private Paint mSatValTrackerPaint;
|
||||
|
||||
private Paint mHuePaint;
|
||||
private Paint mHueTrackerPaint;
|
||||
|
||||
private Paint mAlphaPaint;
|
||||
private Paint mAlphaTextPaint;
|
||||
|
||||
private Paint mBorderPaint;
|
||||
|
||||
private Shader mValShader;
|
||||
private Shader mSatShader;
|
||||
private Shader mHueShader;
|
||||
private Shader mAlphaShader;
|
||||
|
||||
private int mAlpha = 0xff;
|
||||
private float mHue = 360f;
|
||||
private float mSat = 0f;
|
||||
private float mVal = 0f;
|
||||
|
||||
private String mAlphaSliderText = "";
|
||||
private int mSliderTrackerColor = 0xff1c1c1c;
|
||||
private int mBorderColor = 0xff6E6E6E;
|
||||
private boolean mShowAlphaPanel = false;
|
||||
|
||||
/*
|
||||
* To remember which panel that has the "focus" when
|
||||
* processing hardware button data.
|
||||
*/
|
||||
private int mLastTouchedPanel = PANEL_SAT_VAL;
|
||||
|
||||
/**
|
||||
* Offset from the edge we must have or else
|
||||
* the finger tracker will get clipped when
|
||||
* it is drawn outside of the view.
|
||||
*/
|
||||
private float mDrawingOffset;
|
||||
|
||||
|
||||
/*
|
||||
* Distance form the edges of the view
|
||||
* of where we are allowed to draw.
|
||||
*/
|
||||
private RectF mDrawingRect;
|
||||
|
||||
private RectF mSatValRect;
|
||||
private RectF mHueRect;
|
||||
private RectF mAlphaRect;
|
||||
|
||||
private AlphaPatternDrawable mAlphaPattern;
|
||||
|
||||
private Point mStartTouchPoint = null;
|
||||
|
||||
public interface OnColorChangedListener {
|
||||
public void onColorChanged(int color);
|
||||
}
|
||||
|
||||
public ColorPickerView(Context context){
|
||||
this(context, null);
|
||||
}
|
||||
|
||||
public ColorPickerView(Context context, AttributeSet attrs) {
|
||||
this(context, attrs, 0);
|
||||
}
|
||||
|
||||
public ColorPickerView(Context context, AttributeSet attrs, int defStyle) {
|
||||
super(context, attrs, defStyle);
|
||||
init();
|
||||
}
|
||||
|
||||
private void init(){
|
||||
mDensity = getContext().getResources().getDisplayMetrics().density;
|
||||
PALETTE_CIRCLE_TRACKER_RADIUS *= mDensity;
|
||||
RECTANGLE_TRACKER_OFFSET *= mDensity;
|
||||
HUE_PANEL_WIDTH *= mDensity;
|
||||
ALPHA_PANEL_HEIGHT *= mDensity;
|
||||
PANEL_SPACING = PANEL_SPACING * mDensity;
|
||||
|
||||
mDrawingOffset = calculateRequiredOffset();
|
||||
|
||||
initPaintTools();
|
||||
|
||||
//Needed for receiving trackball motion events.
|
||||
setFocusable(true);
|
||||
setFocusableInTouchMode(true);
|
||||
}
|
||||
|
||||
private void initPaintTools(){
|
||||
|
||||
mSatValPaint = new Paint();
|
||||
mSatValTrackerPaint = new Paint();
|
||||
mHuePaint = new Paint();
|
||||
mHueTrackerPaint = new Paint();
|
||||
mAlphaPaint = new Paint();
|
||||
mAlphaTextPaint = new Paint();
|
||||
mBorderPaint = new Paint();
|
||||
|
||||
|
||||
mSatValTrackerPaint.setStyle(Style.STROKE);
|
||||
mSatValTrackerPaint.setStrokeWidth(2f * mDensity);
|
||||
mSatValTrackerPaint.setAntiAlias(true);
|
||||
|
||||
mHueTrackerPaint.setColor(mSliderTrackerColor);
|
||||
mHueTrackerPaint.setStyle(Style.STROKE);
|
||||
mHueTrackerPaint.setStrokeWidth(2f * mDensity);
|
||||
mHueTrackerPaint.setAntiAlias(true);
|
||||
|
||||
mAlphaTextPaint.setColor(0xff1c1c1c);
|
||||
mAlphaTextPaint.setTextSize(14f * mDensity);
|
||||
mAlphaTextPaint.setAntiAlias(true);
|
||||
mAlphaTextPaint.setTextAlign(Align.CENTER);
|
||||
mAlphaTextPaint.setFakeBoldText(true);
|
||||
|
||||
|
||||
}
|
||||
|
||||
private float calculateRequiredOffset(){
|
||||
float offset = Math.max(PALETTE_CIRCLE_TRACKER_RADIUS, RECTANGLE_TRACKER_OFFSET);
|
||||
offset = Math.max(offset, BORDER_WIDTH_PX * mDensity);
|
||||
|
||||
return offset * 1.5f;
|
||||
}
|
||||
|
||||
private int[] buildHueColorArray(){
|
||||
|
||||
int[] hue = new int[361];
|
||||
|
||||
int count = 0;
|
||||
for(int i = hue.length -1; i >= 0; i--, count++){
|
||||
hue[count] = Color.HSVToColor(new float[]{i, 1f, 1f});
|
||||
}
|
||||
|
||||
return hue;
|
||||
}
|
||||
|
||||
|
||||
@Override
|
||||
protected void onDraw(Canvas canvas) {
|
||||
|
||||
if(mDrawingRect.width() <= 0 || mDrawingRect.height() <= 0) return;
|
||||
|
||||
drawSatValPanel(canvas);
|
||||
drawHuePanel(canvas);
|
||||
drawAlphaPanel(canvas);
|
||||
|
||||
}
|
||||
|
||||
private void drawSatValPanel(Canvas canvas){
|
||||
|
||||
final RectF rect = mSatValRect;
|
||||
|
||||
if(BORDER_WIDTH_PX > 0){
|
||||
mBorderPaint.setColor(mBorderColor);
|
||||
canvas.drawRect(mDrawingRect.left, mDrawingRect.top, rect.right + BORDER_WIDTH_PX, rect.bottom + BORDER_WIDTH_PX, mBorderPaint);
|
||||
}
|
||||
|
||||
if (mValShader == null) {
|
||||
mValShader = new LinearGradient(rect.left, rect.top, rect.left, rect.bottom,
|
||||
0xffffffff, 0xff000000, TileMode.CLAMP);
|
||||
}
|
||||
|
||||
int rgb = Color.HSVToColor(new float[]{mHue,1f,1f});
|
||||
|
||||
mSatShader = new LinearGradient(rect.left, rect.top, rect.right, rect.top,
|
||||
0xffffffff, rgb, TileMode.CLAMP);
|
||||
ComposeShader mShader = new ComposeShader(mValShader, mSatShader, PorterDuff.Mode.MULTIPLY);
|
||||
mSatValPaint.setShader(mShader);
|
||||
|
||||
canvas.drawRect(rect, mSatValPaint);
|
||||
|
||||
Point p = satValToPoint(mSat, mVal);
|
||||
|
||||
mSatValTrackerPaint.setColor(0xff000000);
|
||||
canvas.drawCircle(p.x, p.y, PALETTE_CIRCLE_TRACKER_RADIUS - 1f * mDensity, mSatValTrackerPaint);
|
||||
|
||||
mSatValTrackerPaint.setColor(0xffdddddd);
|
||||
canvas.drawCircle(p.x, p.y, PALETTE_CIRCLE_TRACKER_RADIUS, mSatValTrackerPaint);
|
||||
|
||||
}
|
||||
|
||||
private void drawHuePanel(Canvas canvas){
|
||||
|
||||
final RectF rect = mHueRect;
|
||||
|
||||
if(BORDER_WIDTH_PX > 0){
|
||||
mBorderPaint.setColor(mBorderColor);
|
||||
canvas.drawRect(rect.left - BORDER_WIDTH_PX,
|
||||
rect.top - BORDER_WIDTH_PX,
|
||||
rect.right + BORDER_WIDTH_PX,
|
||||
rect.bottom + BORDER_WIDTH_PX,
|
||||
mBorderPaint);
|
||||
}
|
||||
|
||||
if (mHueShader == null) {
|
||||
mHueShader = new LinearGradient(rect.left, rect.top, rect.left, rect.bottom, buildHueColorArray(), null, TileMode.CLAMP);
|
||||
mHuePaint.setShader(mHueShader);
|
||||
}
|
||||
|
||||
canvas.drawRect(rect, mHuePaint);
|
||||
|
||||
float rectHeight = 4 * mDensity / 2;
|
||||
|
||||
Point p = hueToPoint(mHue);
|
||||
|
||||
RectF r = new RectF();
|
||||
r.left = rect.left - RECTANGLE_TRACKER_OFFSET;
|
||||
r.right = rect.right + RECTANGLE_TRACKER_OFFSET;
|
||||
r.top = p.y - rectHeight;
|
||||
r.bottom = p.y + rectHeight;
|
||||
|
||||
|
||||
canvas.drawRoundRect(r, 2, 2, mHueTrackerPaint);
|
||||
|
||||
}
|
||||
|
||||
private void drawAlphaPanel(Canvas canvas){
|
||||
|
||||
if(!mShowAlphaPanel || mAlphaRect == null || mAlphaPattern == null) return;
|
||||
|
||||
final RectF rect = mAlphaRect;
|
||||
|
||||
if(BORDER_WIDTH_PX > 0){
|
||||
mBorderPaint.setColor(mBorderColor);
|
||||
canvas.drawRect(rect.left - BORDER_WIDTH_PX,
|
||||
rect.top - BORDER_WIDTH_PX,
|
||||
rect.right + BORDER_WIDTH_PX,
|
||||
rect.bottom + BORDER_WIDTH_PX,
|
||||
mBorderPaint);
|
||||
}
|
||||
|
||||
|
||||
mAlphaPattern.draw(canvas);
|
||||
|
||||
float[] hsv = new float[]{mHue,mSat,mVal};
|
||||
int color = Color.HSVToColor(hsv);
|
||||
int acolor = Color.HSVToColor(0, hsv);
|
||||
|
||||
mAlphaShader = new LinearGradient(rect.left, rect.top, rect.right, rect.top,
|
||||
color, acolor, TileMode.CLAMP);
|
||||
|
||||
|
||||
mAlphaPaint.setShader(mAlphaShader);
|
||||
|
||||
canvas.drawRect(rect, mAlphaPaint);
|
||||
|
||||
if(mAlphaSliderText != null && mAlphaSliderText!= ""){
|
||||
canvas.drawText(mAlphaSliderText, rect.centerX(), rect.centerY() + 4 * mDensity, mAlphaTextPaint);
|
||||
}
|
||||
|
||||
float rectWidth = 4 * mDensity / 2;
|
||||
|
||||
Point p = alphaToPoint(mAlpha);
|
||||
|
||||
RectF r = new RectF();
|
||||
r.left = p.x - rectWidth;
|
||||
r.right = p.x + rectWidth;
|
||||
r.top = rect.top - RECTANGLE_TRACKER_OFFSET;
|
||||
r.bottom = rect.bottom + RECTANGLE_TRACKER_OFFSET;
|
||||
|
||||
canvas.drawRoundRect(r, 2, 2, mHueTrackerPaint);
|
||||
|
||||
}
|
||||
|
||||
|
||||
private Point hueToPoint(float hue){
|
||||
|
||||
final RectF rect = mHueRect;
|
||||
final float height = rect.height();
|
||||
|
||||
Point p = new Point();
|
||||
|
||||
p.y = (int) (height - (hue * height / 360f) + rect.top);
|
||||
p.x = (int) rect.left;
|
||||
|
||||
return p;
|
||||
}
|
||||
|
||||
private Point satValToPoint(float sat, float val){
|
||||
|
||||
final RectF rect = mSatValRect;
|
||||
final float height = rect.height();
|
||||
final float width = rect.width();
|
||||
|
||||
Point p = new Point();
|
||||
|
||||
p.x = (int) (sat * width + rect.left);
|
||||
p.y = (int) ((1f - val) * height + rect.top);
|
||||
|
||||
return p;
|
||||
}
|
||||
|
||||
private Point alphaToPoint(int alpha){
|
||||
|
||||
final RectF rect = mAlphaRect;
|
||||
final float width = rect.width();
|
||||
|
||||
Point p = new Point();
|
||||
|
||||
p.x = (int) (width - (alpha * width / 0xff) + rect.left);
|
||||
p.y = (int) rect.top;
|
||||
|
||||
return p;
|
||||
|
||||
}
|
||||
|
||||
private float[] pointToSatVal(float x, float y){
|
||||
|
||||
final RectF rect = mSatValRect;
|
||||
float[] result = new float[2];
|
||||
|
||||
float width = rect.width();
|
||||
float height = rect.height();
|
||||
|
||||
if (x < rect.left){
|
||||
x = 0f;
|
||||
}
|
||||
else if(x > rect.right){
|
||||
x = width;
|
||||
}
|
||||
else{
|
||||
x = x - rect.left;
|
||||
}
|
||||
|
||||
if (y < rect.top){
|
||||
y = 0f;
|
||||
}
|
||||
else if(y > rect.bottom){
|
||||
y = height;
|
||||
}
|
||||
else{
|
||||
y = y - rect.top;
|
||||
}
|
||||
|
||||
|
||||
result[0] = 1.f / width * x;
|
||||
result[1] = 1.f - (1.f / height * y);
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
private float pointToHue(float y){
|
||||
|
||||
final RectF rect = mHueRect;
|
||||
|
||||
float height = rect.height();
|
||||
|
||||
if (y < rect.top){
|
||||
y = 0f;
|
||||
}
|
||||
else if(y > rect.bottom){
|
||||
y = height;
|
||||
}
|
||||
else{
|
||||
y = y - rect.top;
|
||||
}
|
||||
|
||||
return 360f - (y * 360f / height);
|
||||
}
|
||||
|
||||
private int pointToAlpha(int x){
|
||||
|
||||
final RectF rect = mAlphaRect;
|
||||
final int width = (int) rect.width();
|
||||
|
||||
if(x < rect.left){
|
||||
x = 0;
|
||||
}
|
||||
else if(x > rect.right){
|
||||
x = width;
|
||||
}
|
||||
else{
|
||||
x = x - (int)rect.left;
|
||||
}
|
||||
|
||||
return 0xff - (x * 0xff / width);
|
||||
|
||||
}
|
||||
|
||||
|
||||
@Override
|
||||
public boolean onTrackballEvent(MotionEvent event) {
|
||||
|
||||
float x = event.getX();
|
||||
float y = event.getY();
|
||||
|
||||
boolean update = false;
|
||||
|
||||
|
||||
if(event.getAction() == MotionEvent.ACTION_MOVE){
|
||||
|
||||
switch(mLastTouchedPanel){
|
||||
|
||||
case PANEL_SAT_VAL:
|
||||
|
||||
float sat, val;
|
||||
|
||||
sat = mSat + x/50f;
|
||||
val = mVal - y/50f;
|
||||
|
||||
if(sat < 0f){
|
||||
sat = 0f;
|
||||
}
|
||||
else if(sat > 1f){
|
||||
sat = 1f;
|
||||
}
|
||||
|
||||
if(val < 0f){
|
||||
val = 0f;
|
||||
}
|
||||
else if(val > 1f){
|
||||
val = 1f;
|
||||
}
|
||||
|
||||
mSat = sat;
|
||||
mVal = val;
|
||||
|
||||
update = true;
|
||||
|
||||
break;
|
||||
|
||||
case PANEL_HUE:
|
||||
|
||||
float hue = mHue - y * 10f;
|
||||
|
||||
if(hue < 0f){
|
||||
hue = 0f;
|
||||
}
|
||||
else if(hue > 360f){
|
||||
hue = 360f;
|
||||
}
|
||||
|
||||
mHue = hue;
|
||||
|
||||
update = true;
|
||||
|
||||
break;
|
||||
|
||||
case PANEL_ALPHA:
|
||||
|
||||
if(!mShowAlphaPanel || mAlphaRect == null){
|
||||
update = false;
|
||||
}
|
||||
else{
|
||||
|
||||
int alpha = (int) (mAlpha - x*10);
|
||||
|
||||
if(alpha < 0){
|
||||
alpha = 0;
|
||||
}
|
||||
else if(alpha > 0xff){
|
||||
alpha = 0xff;
|
||||
}
|
||||
|
||||
mAlpha = alpha;
|
||||
|
||||
|
||||
update = true;
|
||||
}
|
||||
|
||||
break;
|
||||
}
|
||||
|
||||
|
||||
}
|
||||
|
||||
|
||||
if(update){
|
||||
|
||||
if(mListener != null){
|
||||
mListener.onColorChanged(Color.HSVToColor(mAlpha, new float[]{mHue, mSat, mVal}));
|
||||
}
|
||||
|
||||
invalidate();
|
||||
return true;
|
||||
}
|
||||
|
||||
|
||||
return super.onTrackballEvent(event);
|
||||
}
|
||||
|
||||
@Override
|
||||
public boolean onTouchEvent(MotionEvent event) {
|
||||
|
||||
boolean update = false;
|
||||
|
||||
switch(event.getAction()){
|
||||
|
||||
case MotionEvent.ACTION_DOWN:
|
||||
|
||||
mStartTouchPoint = new Point((int)event.getX(), (int)event.getY());
|
||||
|
||||
update = moveTrackersIfNeeded(event);
|
||||
|
||||
break;
|
||||
|
||||
case MotionEvent.ACTION_MOVE:
|
||||
|
||||
update = moveTrackersIfNeeded(event);
|
||||
|
||||
break;
|
||||
|
||||
case MotionEvent.ACTION_UP:
|
||||
|
||||
mStartTouchPoint = null;
|
||||
|
||||
update = moveTrackersIfNeeded(event);
|
||||
|
||||
break;
|
||||
|
||||
}
|
||||
|
||||
if(update){
|
||||
|
||||
if(mListener != null){
|
||||
mListener.onColorChanged(Color.HSVToColor(mAlpha, new float[]{mHue, mSat, mVal}));
|
||||
}
|
||||
|
||||
invalidate();
|
||||
return true;
|
||||
}
|
||||
|
||||
|
||||
return super.onTouchEvent(event);
|
||||
}
|
||||
|
||||
private boolean moveTrackersIfNeeded(MotionEvent event){
|
||||
|
||||
if(mStartTouchPoint == null) return false;
|
||||
|
||||
boolean update = false;
|
||||
|
||||
int startX = mStartTouchPoint.x;
|
||||
int startY = mStartTouchPoint.y;
|
||||
|
||||
|
||||
if(mHueRect.contains(startX, startY)){
|
||||
mLastTouchedPanel = PANEL_HUE;
|
||||
|
||||
mHue = pointToHue(event.getY());
|
||||
|
||||
update = true;
|
||||
}
|
||||
else if(mSatValRect.contains(startX, startY)){
|
||||
|
||||
mLastTouchedPanel = PANEL_SAT_VAL;
|
||||
|
||||
float[] result = pointToSatVal(event.getX(), event.getY());
|
||||
|
||||
mSat = result[0];
|
||||
mVal = result[1];
|
||||
|
||||
update = true;
|
||||
}
|
||||
else if(mAlphaRect != null && mAlphaRect.contains(startX, startY)){
|
||||
|
||||
mLastTouchedPanel = PANEL_ALPHA;
|
||||
|
||||
mAlpha = pointToAlpha((int)event.getX());
|
||||
|
||||
update = true;
|
||||
}
|
||||
|
||||
|
||||
return update;
|
||||
}
|
||||
|
||||
@Override
|
||||
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
|
||||
|
||||
int width = 0;
|
||||
int height = 0;
|
||||
|
||||
int widthMode = MeasureSpec.getMode(widthMeasureSpec);
|
||||
int heightMode = MeasureSpec.getMode(heightMeasureSpec);
|
||||
|
||||
int widthAllowed = MeasureSpec.getSize(widthMeasureSpec);
|
||||
int heightAllowed = MeasureSpec.getSize(heightMeasureSpec);
|
||||
|
||||
widthAllowed = chooseWidth(widthMode, widthAllowed);
|
||||
heightAllowed = chooseHeight(heightMode, heightAllowed);
|
||||
|
||||
if(!mShowAlphaPanel){
|
||||
|
||||
height = (int) (widthAllowed - PANEL_SPACING - HUE_PANEL_WIDTH);
|
||||
|
||||
//If calculated height (based on the width) is more than the allowed height.
|
||||
if(height > heightAllowed || getTag().equals("landscape")) {
|
||||
height = heightAllowed;
|
||||
width = (int) (height + PANEL_SPACING + HUE_PANEL_WIDTH);
|
||||
}
|
||||
else{
|
||||
width = widthAllowed;
|
||||
}
|
||||
}
|
||||
else{
|
||||
|
||||
width = (int) (heightAllowed - ALPHA_PANEL_HEIGHT + HUE_PANEL_WIDTH);
|
||||
|
||||
if(width > widthAllowed){
|
||||
width = widthAllowed;
|
||||
height = (int) (widthAllowed - HUE_PANEL_WIDTH + ALPHA_PANEL_HEIGHT);
|
||||
}
|
||||
else{
|
||||
height = heightAllowed;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
setMeasuredDimension(width, height);
|
||||
}
|
||||
|
||||
private int chooseWidth(int mode, int size){
|
||||
if (mode == MeasureSpec.AT_MOST || mode == MeasureSpec.EXACTLY) {
|
||||
return size;
|
||||
} else { // (mode == MeasureSpec.UNSPECIFIED)
|
||||
return getPrefferedWidth();
|
||||
}
|
||||
}
|
||||
|
||||
private int chooseHeight(int mode, int size){
|
||||
if (mode == MeasureSpec.AT_MOST || mode == MeasureSpec.EXACTLY) {
|
||||
return size;
|
||||
} else { // (mode == MeasureSpec.UNSPECIFIED)
|
||||
return getPrefferedHeight();
|
||||
}
|
||||
}
|
||||
|
||||
private int getPrefferedWidth(){
|
||||
|
||||
int width = getPrefferedHeight();
|
||||
|
||||
if(mShowAlphaPanel){
|
||||
width -= (PANEL_SPACING + ALPHA_PANEL_HEIGHT);
|
||||
}
|
||||
|
||||
|
||||
return (int) (width + HUE_PANEL_WIDTH + PANEL_SPACING);
|
||||
|
||||
}
|
||||
|
||||
private int getPrefferedHeight(){
|
||||
|
||||
int height = (int)(200 * mDensity);
|
||||
|
||||
if(mShowAlphaPanel){
|
||||
height += PANEL_SPACING + ALPHA_PANEL_HEIGHT;
|
||||
}
|
||||
|
||||
return height;
|
||||
}
|
||||
|
||||
|
||||
|
||||
@Override
|
||||
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
|
||||
super.onSizeChanged(w, h, oldw, oldh);
|
||||
|
||||
mDrawingRect = new RectF();
|
||||
mDrawingRect.left = mDrawingOffset + getPaddingLeft();
|
||||
mDrawingRect.right = w - mDrawingOffset - getPaddingRight();
|
||||
mDrawingRect.top = mDrawingOffset + getPaddingTop();
|
||||
mDrawingRect.bottom = h - mDrawingOffset - getPaddingBottom();
|
||||
|
||||
setUpSatValRect();
|
||||
setUpHueRect();
|
||||
setUpAlphaRect();
|
||||
}
|
||||
|
||||
private void setUpSatValRect(){
|
||||
|
||||
final RectF dRect = mDrawingRect;
|
||||
float panelSide = dRect.height() - BORDER_WIDTH_PX * 2;
|
||||
|
||||
if(mShowAlphaPanel){
|
||||
panelSide -= PANEL_SPACING + ALPHA_PANEL_HEIGHT;
|
||||
}
|
||||
|
||||
float left = dRect.left + BORDER_WIDTH_PX;
|
||||
float top = dRect.top + BORDER_WIDTH_PX;
|
||||
float bottom = top + panelSide;
|
||||
float right = left + panelSide;
|
||||
|
||||
mSatValRect = new RectF(left,top, right, bottom);
|
||||
}
|
||||
|
||||
private void setUpHueRect(){
|
||||
final RectF dRect = mDrawingRect;
|
||||
|
||||
float left = dRect.right - HUE_PANEL_WIDTH + BORDER_WIDTH_PX;
|
||||
float top = dRect.top + BORDER_WIDTH_PX;
|
||||
float bottom = dRect.bottom - BORDER_WIDTH_PX - (mShowAlphaPanel ? (PANEL_SPACING + ALPHA_PANEL_HEIGHT) : 0);
|
||||
float right = dRect.right - BORDER_WIDTH_PX;
|
||||
|
||||
mHueRect = new RectF(left, top, right, bottom);
|
||||
}
|
||||
|
||||
private void setUpAlphaRect() {
|
||||
|
||||
if(!mShowAlphaPanel) return;
|
||||
|
||||
final RectF dRect = mDrawingRect;
|
||||
|
||||
float left = dRect.left + BORDER_WIDTH_PX;
|
||||
float top = dRect.bottom - ALPHA_PANEL_HEIGHT + BORDER_WIDTH_PX;
|
||||
float bottom = dRect.bottom - BORDER_WIDTH_PX;
|
||||
float right = dRect.right - BORDER_WIDTH_PX;
|
||||
|
||||
mAlphaRect = new RectF(left, top, right, bottom);
|
||||
|
||||
mAlphaPattern = new AlphaPatternDrawable((int) (5 * mDensity));
|
||||
mAlphaPattern.setBounds(
|
||||
Math.round(mAlphaRect.left),
|
||||
Math.round(mAlphaRect.top),
|
||||
Math.round(mAlphaRect.right),
|
||||
Math.round(mAlphaRect.bottom)
|
||||
);
|
||||
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Set a OnColorChangedListener to get notified when the color
|
||||
* selected by the user has changed.
|
||||
* @param listener
|
||||
*/
|
||||
public void setOnColorChangedListener(OnColorChangedListener listener){
|
||||
mListener = listener;
|
||||
}
|
||||
|
||||
/**
|
||||
* Set the color of the border surrounding all panels.
|
||||
* @param color
|
||||
*/
|
||||
public void setBorderColor(int color){
|
||||
mBorderColor = color;
|
||||
invalidate();
|
||||
}
|
||||
|
||||
/**
|
||||
* Get the color of the border surrounding all panels.
|
||||
*/
|
||||
public int getBorderColor(){
|
||||
return mBorderColor;
|
||||
}
|
||||
|
||||
/**
|
||||
* Get the current color this view is showing.
|
||||
* @return the current color.
|
||||
*/
|
||||
public int getColor(){
|
||||
return Color.HSVToColor(mAlpha, new float[]{mHue,mSat,mVal});
|
||||
}
|
||||
|
||||
/**
|
||||
* Set the color the view should show.
|
||||
* @param color The color that should be selected.
|
||||
*/
|
||||
public void setColor(int color){
|
||||
setColor(color, false);
|
||||
}
|
||||
|
||||
/**
|
||||
* Set the color this view should show.
|
||||
* @param color The color that should be selected.
|
||||
* @param callback If you want to get a callback to
|
||||
* your OnColorChangedListener.
|
||||
*/
|
||||
public void setColor(int color, boolean callback){
|
||||
|
||||
int alpha = Color.alpha(color);
|
||||
int red = Color.red(color);
|
||||
int blue = Color.blue(color);
|
||||
int green = Color.green(color);
|
||||
|
||||
float[] hsv = new float[3];
|
||||
|
||||
Color.RGBToHSV(red, green, blue, hsv);
|
||||
|
||||
mAlpha = alpha;
|
||||
mHue = hsv[0];
|
||||
mSat = hsv[1];
|
||||
mVal = hsv[2];
|
||||
|
||||
if(callback && mListener != null){
|
||||
mListener.onColorChanged(Color.HSVToColor(mAlpha, new float[]{mHue, mSat, mVal}));
|
||||
}
|
||||
|
||||
invalidate();
|
||||
}
|
||||
|
||||
/**
|
||||
* Get the drawing offset of the color picker view.
|
||||
* The drawing offset is the distance from the side of
|
||||
* a panel to the side of the view minus the padding.
|
||||
* Useful if you want to have your own panel below showing
|
||||
* the currently selected color and want to align it perfectly.
|
||||
* @return The offset in pixels.
|
||||
*/
|
||||
public float getDrawingOffset(){
|
||||
return mDrawingOffset;
|
||||
}
|
||||
|
||||
/**
|
||||
* Set if the user is allowed to adjust the alpha panel. Default is false.
|
||||
* If it is set to false no alpha will be set.
|
||||
* @param visible
|
||||
*/
|
||||
public void setAlphaSliderVisible(boolean visible){
|
||||
|
||||
if(mShowAlphaPanel != visible){
|
||||
mShowAlphaPanel = visible;
|
||||
|
||||
/*
|
||||
* Reset all shader to force a recreation.
|
||||
* Otherwise they will not look right after
|
||||
* the size of the view has changed.
|
||||
*/
|
||||
mValShader = null;
|
||||
mSatShader = null;
|
||||
mHueShader = null;
|
||||
mAlphaShader = null;;
|
||||
|
||||
requestLayout();
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
public void setSliderTrackerColor(int color){
|
||||
mSliderTrackerColor = color;
|
||||
|
||||
mHueTrackerPaint.setColor(mSliderTrackerColor);
|
||||
|
||||
invalidate();
|
||||
}
|
||||
|
||||
public int getSliderTrackerColor(){
|
||||
return mSliderTrackerColor;
|
||||
}
|
||||
|
||||
/**
|
||||
* Set the text that should be shown in the
|
||||
* alpha slider. Set to null to disable text.
|
||||
* @param res string resource id.
|
||||
*/
|
||||
public void setAlphaSliderText(int res){
|
||||
String text = getContext().getString(res);
|
||||
setAlphaSliderText(text);
|
||||
}
|
||||
|
||||
/**
|
||||
* Set the text that should be shown in the
|
||||
* alpha slider. Set to null to disable text.
|
||||
* @param text Text that should be shown.
|
||||
*/
|
||||
public void setAlphaSliderText(String text){
|
||||
mAlphaSliderText = text;
|
||||
invalidate();
|
||||
}
|
||||
|
||||
/**
|
||||
* Get the current value of the text
|
||||
* that will be shown in the alpha
|
||||
* slider.
|
||||
* @return
|
||||
*/
|
||||
public String getAlphaSliderText(){
|
||||
return mAlphaSliderText;
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user