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Diffstat (limited to 'src/com/android/gallery3d/filtershow/colorpicker/ColorValueView.java')
-rw-r--r--src/com/android/gallery3d/filtershow/colorpicker/ColorValueView.java180
1 files changed, 180 insertions, 0 deletions
diff --git a/src/com/android/gallery3d/filtershow/colorpicker/ColorValueView.java b/src/com/android/gallery3d/filtershow/colorpicker/ColorValueView.java
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index 000000000..13cb44bad
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+++ b/src/com/android/gallery3d/filtershow/colorpicker/ColorValueView.java
@@ -0,0 +1,180 @@
+/*
+ * 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.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 ColorValueView extends View implements ColorListener {
+
+ private float mRadius;
+ private float mWidth;
+ private Paint mBarPaint1;
+ private Paint mLinePaint1;
+ private Paint mLinePaint2;
+ private float mHeight;
+ private int mBgcolor = 0;
+ private Paint mDotPaint;
+ private float dotRadus;
+ private float mBorder;
+
+ private float[] mHSVO = new float[4];
+ private int mSliderColor;
+ private float mDotX;
+ private float mDotY = mBorder;
+ private final static float DOT_SIZE = ColorRectView.DOT_SIZE;
+ private final static float BORDER_SIZE = ColorRectView.DOT_SIZE;
+
+ public ColorValueView(Context ctx, AttributeSet attrs) {
+ super(ctx, attrs);
+ DisplayMetrics metrics = ctx.getResources().getDisplayMetrics();
+ float mDpToPix = metrics.density;
+ dotRadus = 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));
+
+ mBarPaint1.setStyle(Paint.Style.FILL);
+
+ mLinePaint1 = new Paint();
+ mLinePaint1.setColor(Color.GRAY);
+ mLinePaint2 = new Paint();
+ mSliderColor = ctx.getResources().getColor(R.color.slider_line_color);
+ mLinePaint2.setColor(mSliderColor);
+ mLinePaint2.setStrokeWidth(4);
+ }
+
+ public boolean onDown(MotionEvent e) {
+ return true;
+ }
+
+ public boolean onTouchEvent(MotionEvent event) {
+ float ox = mDotX;
+ float oy = mDotY;
+
+ float x = event.getX();
+ float y = event.getY();
+
+ mDotY = y;
+
+ if (mDotY < mBorder) {
+ mDotY = mBorder;
+ }
+
+ if (mDotY > mHeight - mBorder) {
+ mDotY = mHeight - mBorder;
+ }
+ mHSVO[2] = (mDotY - mBorder) / (mHeight - mBorder * 2);
+ notifyColorListeners(mHSVO);
+ setupButton();
+ invalidate((int) (ox - dotRadus), (int) (oy - dotRadus), (int) (ox + dotRadus),
+ (int) (oy + dotRadus));
+ invalidate((int) (mDotX - dotRadus), (int) (mDotY - dotRadus), (int) (mDotX + dotRadus),
+ (int) (mDotY + dotRadus));
+
+ return true;
+ }
+
+ private void setupButton() {
+ float pos = mHSVO[2] * (mHeight - mBorder * 2);
+ mDotY = pos + mBorder;
+
+ int[] colors3 = new int[] {
+ mSliderColor, mSliderColor, 0x66000000, 0 };
+ RadialGradient g = new RadialGradient(mDotX, mDotY, dotRadus, 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;
+ mDotX = mWidth / 2;
+ updatePaint();
+ setupButton();
+ }
+
+ private void updatePaint() {
+ float[] hsv = new float[] {
+ mHSVO[0], mHSVO[1], 0f };
+ int color1 = Color.HSVToColor(hsv);
+ hsv[2] = 1;
+ int color2 = Color.HSVToColor(hsv);
+
+ Shader sg = new LinearGradient(mBorder, mBorder, mBorder, mHeight - mBorder, color1, color2,
+ 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, mBarPaint1);
+ canvas.drawLine(mDotX, mDotY, mDotX, mHeight - mBorder, mLinePaint2);
+ canvas.drawLine(mDotX, mBorder, mDotX, mDotY, mLinePaint1);
+ if (mDotX != Float.NaN) {
+ canvas.drawCircle(mDotX, mDotY, dotRadus, mDotPaint);
+ }
+ }
+
+ @Override
+ public void setColor(float[] hsvo) {
+ System.arraycopy(hsvo, 0, mHSVO, 0, mHSVO.length);
+
+ float oy = mDotY;
+ updatePaint();
+ setupButton();
+ invalidate();
+
+ }
+
+ ArrayList<ColorListener> mColorListeners = new ArrayList<ColorListener>();
+
+ public void notifyColorListeners(float[] hsv) {
+ for (ColorListener l : mColorListeners) {
+ l.setColor(hsv);
+ }
+ }
+
+ public void addColorListener(ColorListener l) {
+ mColorListeners.add(l);
+ }
+
+ public void removeColorListener(ColorListener l) {
+ mColorListeners.remove(l);
+ }
+}