diff options
Diffstat (limited to 'src/com/android/gallery3d/filtershow/colorpicker/ColorHueView.java')
-rw-r--r-- | src/com/android/gallery3d/filtershow/colorpicker/ColorHueView.java | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/src/com/android/gallery3d/filtershow/colorpicker/ColorHueView.java b/src/com/android/gallery3d/filtershow/colorpicker/ColorHueView.java new file mode 100644 index 000000000..efde6fdf2 --- /dev/null +++ b/src/com/android/gallery3d/filtershow/colorpicker/ColorHueView.java @@ -0,0 +1,208 @@ +/* + * Copyright (C) 2013 The Android Open Source 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 com.android.gallery3d.filtershow.colorpicker; + +import android.content.Context; +import android.graphics.Bitmap; +import android.graphics.BitmapShader; +import android.graphics.Canvas; +import android.graphics.Color; +import android.graphics.LinearGradient; +import android.graphics.Paint; +import android.graphics.RadialGradient; +import android.graphics.Shader; +import android.util.AttributeSet; +import android.util.DisplayMetrics; +import android.view.MotionEvent; +import android.view.View; + +import com.android.gallery3d.R; + +import java.util.ArrayList; + +public class ColorHueView extends View implements ColorListener { + + private float mRadius; + private float mWidth; + private Paint mBarPaint1; + private Paint mLinePaint1; + private Paint mLinePaint2; + private Paint mCheckPaint; + + private float mHeight; + private Paint mDotPaint; + private int mBgcolor = 0; + + private float mDotRadius; + private float mBorder; + + private float[] mHSVO = new float[4]; + private int mSliderColor; + private float mDotX = mBorder; + private float mDotY = mBorder; + private final static float DOT_SIZE = ColorRectView.DOT_SIZE; + public final static float BORDER_SIZE = 20;; + + private ArrayList<ColorListener> mColorListeners = new ArrayList<ColorListener>(); + + public ColorHueView(Context ctx, AttributeSet attrs) { + super(ctx, attrs); + DisplayMetrics metrics = ctx.getResources().getDisplayMetrics(); + float mDpToPix = metrics.density; + mDotRadius = DOT_SIZE * mDpToPix; + mBorder = BORDER_SIZE * mDpToPix; + mBarPaint1 = new Paint(); + + mDotPaint = new Paint(); + + mDotPaint.setStyle(Paint.Style.FILL); + mDotPaint.setColor(ctx.getResources().getColor(R.color.slider_dot_color)); + mSliderColor = ctx.getResources().getColor(R.color.slider_line_color); + + mBarPaint1.setStyle(Paint.Style.FILL); + + mLinePaint1 = new Paint(); + mLinePaint1.setColor(Color.GRAY); + mLinePaint2 = new Paint(); + mLinePaint2.setColor(mSliderColor); + mLinePaint2.setStrokeWidth(4); + + int[] colors = new int[16 * 16]; + for (int i = 0; i < colors.length; i++) { + int y = i / (16 * 8); + int x = (i / 8) % 2; + colors[i] = (x == y) ? 0xFFAAAAAA : 0xFF444444; + } + Bitmap bitmap = Bitmap.createBitmap(colors, 16, 16, Bitmap.Config.ARGB_8888); + BitmapShader bs = new BitmapShader(bitmap, Shader.TileMode.REPEAT, Shader.TileMode.REPEAT); + mCheckPaint = new Paint(); + mCheckPaint.setShader(bs); + } + + public boolean onDown(MotionEvent e) { + return true; + } + + @Override + public boolean onTouchEvent(MotionEvent event) { + float ox = mDotX; + float oy = mDotY; + + float x = event.getX(); + float y = event.getY(); + + mDotX = x; + + if (mDotX < mBorder) { + mDotX = mBorder; + } + + if (mDotX > mWidth - mBorder) { + mDotX = mWidth - mBorder; + } + mHSVO[3] = (mDotX - mBorder) / (mWidth - mBorder * 2); + notifyColorListeners(mHSVO); + setupButton(); + invalidate((int) (ox - mDotRadius), (int) (oy - mDotRadius), (int) (ox + mDotRadius), + (int) (oy + mDotRadius)); + invalidate( + (int) (mDotX - mDotRadius), (int) (mDotY - mDotRadius), (int) (mDotX + mDotRadius), + (int) (mDotY + mDotRadius)); + + return true; + } + + private void setupButton() { + float pos = mHSVO[3] * (mWidth - mBorder * 2); + mDotX = pos + mBorder; + + int[] colors3 = new int[] { + mSliderColor, mSliderColor, 0x66000000, 0 }; + RadialGradient g = new RadialGradient(mDotX, mDotY, mDotRadius, colors3, new float[] { + 0, .3f, .31f, 1 }, Shader.TileMode.CLAMP); + mDotPaint.setShader(g); + } + + @Override + protected void onSizeChanged(int w, int h, int oldw, int oldh) { + mWidth = w; + mHeight = h; + mDotY = mHeight / 2; + updatePaint(); + setupButton(); + } + + private int[] mColors = new int[] { + 0xFFFF0000,// red + 0xFFFFFF00,// yellow + 0xFF00FF00,// green + 0xFF00FFFF,// cyan + 0xFF0000FF,// blue + 0xFFFF00FF,// magenta + 0xFFFF0000,// red + }; + + private void updatePaint() { + + int color2 = Color.HSVToColor(mHSVO); + int color1 = color2 & 0xFFFFFF; + + Shader sg = new LinearGradient( + mBorder, mBorder, mWidth - mBorder, mBorder, + mColors, null, Shader.TileMode.CLAMP); + mBarPaint1.setShader(sg); + + } + + @Override + protected void onDraw(Canvas canvas) { + super.onDraw(canvas); + canvas.drawColor(mBgcolor); + canvas.drawRect(mBorder, mBorder, mWidth - mBorder, mHeight - mBorder, mCheckPaint); + canvas.drawRect(mBorder, mBorder, mWidth - mBorder, mHeight - mBorder, mBarPaint1); + canvas.drawLine(mDotX, mDotY, mWidth - mBorder, mDotY, mLinePaint1); + canvas.drawLine(mBorder, mDotY, mDotX, mDotY, mLinePaint2); + if (mDotX != Float.NaN) { + canvas.drawCircle(mDotX, mDotY, mDotRadius, mDotPaint); + } + } + + @Override + public void setColor(float[] hsv) { + System.arraycopy(hsv, 0, mHSVO, 0, mHSVO.length); + + float oy = mDotY; + + updatePaint(); + setupButton(); + invalidate(); + } + + public void notifyColorListeners(float[] hsvo) { + for (ColorListener l : mColorListeners) { + l.setColor(hsvo); + } + } + + public void addColorListener(ColorListener l) { + mColorListeners.add(l); + } + + public void removeColorListener(ColorListener l) { + mColorListeners.remove(l); + } +} |