DragView.java revision 6cfafb96c3b108fec90897c1a251229be9861ddb
100acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato/* 200acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato * Copyright (C) 2008 The Android Open Source Project 300acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato * 400acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato * Licensed under the Apache License, Version 2.0 (the "License"); 500acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato * you may not use this file except in compliance with the License. 600acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato * You may obtain a copy of the License at 700acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato * 800acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato * http://www.apache.org/licenses/LICENSE-2.0 900acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato * 1000acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato * Unless required by applicable law or agreed to in writing, software 1100acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato * distributed under the License is distributed on an "AS IS" BASIS, 1200acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1300acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato * See the License for the specific language governing permissions and 1400acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato * limitations under the License. 1500acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato */ 1600acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato 1700acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato 1800acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onoratopackage com.android.launcher2; 1900acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato 20a669d79d0dcf034651ce305a8cd334272bec3374Patrick Dubroyimport android.animation.ValueAnimator; 21a669d79d0dcf034651ce305a8cd334272bec3374Patrick Dubroyimport android.animation.ValueAnimator.AnimatorUpdateListener; 22de7658b5e02ae10010e44fcf8d9c5814f54d9eb0Patrick Dubroyimport android.content.res.Resources; 2300acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onoratoimport android.graphics.Bitmap; 2400acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onoratoimport android.graphics.Canvas; 2500acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onoratoimport android.graphics.Matrix; 2600acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onoratoimport android.graphics.Paint; 27b8c69f3c17a40adc2d85e8e996f754c383c293dcWinson Chungimport android.graphics.Point; 28e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohenimport android.graphics.Rect; 2900acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onoratoimport android.view.View; 30a669d79d0dcf034651ce305a8cd334272bec3374Patrick Dubroyimport android.view.animation.DecelerateInterpolator; 3100acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato 32120980bd00f5eecec5717f49a3d7db96571025a9Adam Cohenimport com.android.launcher.R; 33120980bd00f5eecec5717f49a3d7db96571025a9Adam Cohen 34a669d79d0dcf034651ce305a8cd334272bec3374Patrick Dubroypublic class DragView extends View { 35867ca62c0e4b811d46734ff940d59c7a787525c8Winson Chung private static float sDragAlpha = 1f; 367bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung 3700acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato private Bitmap mBitmap; 38ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen private Bitmap mCrossFadeBitmap; 3900acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato private Paint mPaint; 4000acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato private int mRegistrationX; 4100acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato private int mRegistrationY; 4200acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato 43b8c69f3c17a40adc2d85e8e996f754c383c293dcWinson Chung private Point mDragVisualizeOffset = null; 44e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen private Rect mDragRegion = null; 458dfcba4af7a7ece09e8c7d96053e54f3a383e905Adam Cohen private DragLayer mDragLayer = null; 46fc53cd22c9a78708c78c85946443f23ec8c59502Adam Cohen private boolean mHasDrawn = false; 47ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen private float mCrossFadeProgress = 0f; 48a63c452f5bd491ba9b28c332ccedc6c6c7e2f3ccMichael Jurka 49a669d79d0dcf034651ce305a8cd334272bec3374Patrick Dubroy ValueAnimator mAnim; 50a669d79d0dcf034651ce305a8cd334272bec3374Patrick Dubroy private float mOffsetX = 0.0f; 51a669d79d0dcf034651ce305a8cd334272bec3374Patrick Dubroy private float mOffsetY = 0.0f; 5200acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato 5300acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato /** 5400acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato * Construct the drag view. 5500acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato * <p> 5600acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato * The registration point is the point inside our view that the touch events should 5700acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato * be centered upon. 5800acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato * 598dfcba4af7a7ece09e8c7d96053e54f3a383e905Adam Cohen * @param launcher The Launcher instance 6000acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato * @param bitmap The view that we're dragging around. We scale it up when we draw it. 6100acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato * @param registrationX The x coordinate of the registration point. 6200acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato * @param registrationY The y coordinate of the registration point. 6300acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato */ 648dfcba4af7a7ece09e8c7d96053e54f3a383e905Adam Cohen public DragView(Launcher launcher, Bitmap bitmap, int registrationX, int registrationY, 6572d598400da7cef9c7fc4f99bb1fcd7ff0710011Winson Chung int left, int top, int width, int height, final float initialScale) { 668dfcba4af7a7ece09e8c7d96053e54f3a383e905Adam Cohen super(launcher); 678dfcba4af7a7ece09e8c7d96053e54f3a383e905Adam Cohen mDragLayer = launcher.getDragLayer(); 6800acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato 69de7658b5e02ae10010e44fcf8d9c5814f54d9eb0Patrick Dubroy final Resources res = getResources(); 707bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung final float offsetX = res.getDimensionPixelSize(R.dimen.dragViewOffsetX); 717bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung final float offsetY = res.getDimensionPixelSize(R.dimen.dragViewOffsetY); 727bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung final float scaleDps = res.getDimensionPixelSize(R.dimen.dragViewScale); 737bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung final float scale = (width + scaleDps) / width; 74a669d79d0dcf034651ce305a8cd334272bec3374Patrick Dubroy 75a669d79d0dcf034651ce305a8cd334272bec3374Patrick Dubroy // Animate the view into the correct position 76a669d79d0dcf034651ce305a8cd334272bec3374Patrick Dubroy mAnim = ValueAnimator.ofFloat(0.0f, 1.0f); 777bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung mAnim.setDuration(150); 78a669d79d0dcf034651ce305a8cd334272bec3374Patrick Dubroy mAnim.addUpdateListener(new AnimatorUpdateListener() { 79a669d79d0dcf034651ce305a8cd334272bec3374Patrick Dubroy @Override 80a669d79d0dcf034651ce305a8cd334272bec3374Patrick Dubroy public void onAnimationUpdate(ValueAnimator animation) { 81a669d79d0dcf034651ce305a8cd334272bec3374Patrick Dubroy final float value = (Float) animation.getAnimatedValue(); 82a669d79d0dcf034651ce305a8cd334272bec3374Patrick Dubroy 83a669d79d0dcf034651ce305a8cd334272bec3374Patrick Dubroy final int deltaX = (int) ((value * offsetX) - mOffsetX); 84a669d79d0dcf034651ce305a8cd334272bec3374Patrick Dubroy final int deltaY = (int) ((value * offsetY) - mOffsetY); 85a669d79d0dcf034651ce305a8cd334272bec3374Patrick Dubroy 86a669d79d0dcf034651ce305a8cd334272bec3374Patrick Dubroy mOffsetX += deltaX; 87a669d79d0dcf034651ce305a8cd334272bec3374Patrick Dubroy mOffsetY += deltaY; 8872d598400da7cef9c7fc4f99bb1fcd7ff0710011Winson Chung setScaleX(initialScale + (value * (scale - initialScale))); 8972d598400da7cef9c7fc4f99bb1fcd7ff0710011Winson Chung setScaleY(initialScale + (value * (scale - initialScale))); 90867ca62c0e4b811d46734ff940d59c7a787525c8Winson Chung if (sDragAlpha != 1f) { 91867ca62c0e4b811d46734ff940d59c7a787525c8Winson Chung setAlpha(sDragAlpha * value + (1f - value)); 92867ca62c0e4b811d46734ff940d59c7a787525c8Winson Chung } 93a669d79d0dcf034651ce305a8cd334272bec3374Patrick Dubroy 94a669d79d0dcf034651ce305a8cd334272bec3374Patrick Dubroy if (getParent() == null) { 95a669d79d0dcf034651ce305a8cd334272bec3374Patrick Dubroy animation.cancel(); 96a669d79d0dcf034651ce305a8cd334272bec3374Patrick Dubroy } else { 977bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung setTranslationX(getTranslationX() + deltaX); 987bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung setTranslationY(getTranslationY() + deltaY); 99a669d79d0dcf034651ce305a8cd334272bec3374Patrick Dubroy } 100a669d79d0dcf034651ce305a8cd334272bec3374Patrick Dubroy } 101a669d79d0dcf034651ce305a8cd334272bec3374Patrick Dubroy }); 10200acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato 1037bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung mBitmap = Bitmap.createBitmap(bitmap, left, top, width, height); 104e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen setDragRegion(new Rect(0, 0, width, height)); 10500acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato 10600acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato // The point in our scaled bitmap that the touch events are located 107a669d79d0dcf034651ce305a8cd334272bec3374Patrick Dubroy mRegistrationX = registrationX; 108a669d79d0dcf034651ce305a8cd334272bec3374Patrick Dubroy mRegistrationY = registrationY; 10962bbb3c573fe902940431e4b957c0c4918358d36Patrick Dubroy 11062bbb3c573fe902940431e4b957c0c4918358d36Patrick Dubroy // Force a measure, because Workspace uses getMeasuredHeight() before the layout pass 11162bbb3c573fe902940431e4b957c0c4918358d36Patrick Dubroy int ms = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED); 11262bbb3c573fe902940431e4b957c0c4918358d36Patrick Dubroy measure(ms, ms); 1136cfafb96c3b108fec90897c1a251229be9861ddbMichael Jurka mPaint = new Paint(Paint.FILTER_BITMAP_FLAG); 11462bbb3c573fe902940431e4b957c0c4918358d36Patrick Dubroy } 11562bbb3c573fe902940431e4b957c0c4918358d36Patrick Dubroy 11662bbb3c573fe902940431e4b957c0c4918358d36Patrick Dubroy public float getOffsetY() { 11762bbb3c573fe902940431e4b957c0c4918358d36Patrick Dubroy return mOffsetY; 11800acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato } 11900acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato 120a63c452f5bd491ba9b28c332ccedc6c6c7e2f3ccMichael Jurka public int getDragRegionLeft() { 121e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen return mDragRegion.left; 122a63c452f5bd491ba9b28c332ccedc6c6c7e2f3ccMichael Jurka } 123a63c452f5bd491ba9b28c332ccedc6c6c7e2f3ccMichael Jurka 124a63c452f5bd491ba9b28c332ccedc6c6c7e2f3ccMichael Jurka public int getDragRegionTop() { 125e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen return mDragRegion.top; 126a63c452f5bd491ba9b28c332ccedc6c6c7e2f3ccMichael Jurka } 127a63c452f5bd491ba9b28c332ccedc6c6c7e2f3ccMichael Jurka 128a63c452f5bd491ba9b28c332ccedc6c6c7e2f3ccMichael Jurka public int getDragRegionWidth() { 129e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen return mDragRegion.width(); 130a63c452f5bd491ba9b28c332ccedc6c6c7e2f3ccMichael Jurka } 131a63c452f5bd491ba9b28c332ccedc6c6c7e2f3ccMichael Jurka 132a63c452f5bd491ba9b28c332ccedc6c6c7e2f3ccMichael Jurka public int getDragRegionHeight() { 133e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen return mDragRegion.height(); 134e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen } 135e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen 136b8c69f3c17a40adc2d85e8e996f754c383c293dcWinson Chung public void setDragVisualizeOffset(Point p) { 137b8c69f3c17a40adc2d85e8e996f754c383c293dcWinson Chung mDragVisualizeOffset = p; 138b8c69f3c17a40adc2d85e8e996f754c383c293dcWinson Chung } 139b8c69f3c17a40adc2d85e8e996f754c383c293dcWinson Chung 140b8c69f3c17a40adc2d85e8e996f754c383c293dcWinson Chung public Point getDragVisualizeOffset() { 141b8c69f3c17a40adc2d85e8e996f754c383c293dcWinson Chung return mDragVisualizeOffset; 142b8c69f3c17a40adc2d85e8e996f754c383c293dcWinson Chung } 143b8c69f3c17a40adc2d85e8e996f754c383c293dcWinson Chung 144e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen public void setDragRegion(Rect r) { 145e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen mDragRegion = r; 146e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen } 147e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen 148e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen public Rect getDragRegion() { 149e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen return mDragRegion; 150a63c452f5bd491ba9b28c332ccedc6c6c7e2f3ccMichael Jurka } 151a63c452f5bd491ba9b28c332ccedc6c6c7e2f3ccMichael Jurka 15200acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato @Override 15300acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 154eebd92496e2fbfbd81ea871862a681929101ba06Joe Onorato setMeasuredDimension(mBitmap.getWidth(), mBitmap.getHeight()); 15500acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato } 15600acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato 15700acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato @Override 15800acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato protected void onDraw(Canvas canvas) { 15900acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato if (false) { 16000acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato // for debugging 16100acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato Paint p = new Paint(); 16200acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato p.setStyle(Paint.Style.FILL); 16300acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato p.setColor(0xaaffffff); 16400acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato canvas.drawRect(0, 0, getWidth(), getHeight(), p); 16500acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato } 166a669d79d0dcf034651ce305a8cd334272bec3374Patrick Dubroy 167fc53cd22c9a78708c78c85946443f23ec8c59502Adam Cohen mHasDrawn = true; 168ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen boolean crossFade = mCrossFadeProgress > 0 && mCrossFadeBitmap != null; 169ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen if (crossFade) { 170ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen int alpha = crossFade ? (int) (255 * (1 - mCrossFadeProgress)) : 255; 171ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen mPaint.setAlpha(alpha); 172ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen } 17300acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato canvas.drawBitmap(mBitmap, 0.0f, 0.0f, mPaint); 174ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen if (crossFade) { 175ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen mPaint.setAlpha((int) (255 * mCrossFadeProgress)); 176ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen canvas.save(); 177ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen float sX = (mBitmap.getWidth() * 1.0f) / mCrossFadeBitmap.getWidth(); 178ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen float sY = (mBitmap.getHeight() * 1.0f) / mCrossFadeBitmap.getHeight(); 179ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen canvas.scale(sX, sY); 180ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen canvas.drawBitmap(mCrossFadeBitmap, 0.0f, 0.0f, mPaint); 181ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen canvas.restore(); 182ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen } 183ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen } 184ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen 185ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen public void setCrossFadeBitmap(Bitmap crossFadeBitmap) { 186ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen mCrossFadeBitmap = crossFadeBitmap; 187ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen } 188ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen 189ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen public void crossFade(int duration) { 190ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen ValueAnimator va = ValueAnimator.ofFloat(0f, 1f); 191ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen va.setDuration(duration); 192ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen va.setInterpolator(new DecelerateInterpolator(1.5f)); 193ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen va.addUpdateListener(new AnimatorUpdateListener() { 194ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen @Override 195ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen public void onAnimationUpdate(ValueAnimator animation) { 196ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen mCrossFadeProgress = animation.getAnimatedFraction(); 197ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen } 198ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen }); 199ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen va.start(); 20000acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato } 20100acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato 20200acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato public void setPaint(Paint paint) { 20300acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato mPaint = paint; 2046cfafb96c3b108fec90897c1a251229be9861ddbMichael Jurka if (mPaint == null) { 2056cfafb96c3b108fec90897c1a251229be9861ddbMichael Jurka mPaint = new Paint(Paint.FILTER_BITMAP_FLAG); 2066cfafb96c3b108fec90897c1a251229be9861ddbMichael Jurka } 20700acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato invalidate(); 20800acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato } 20900acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato 210fc53cd22c9a78708c78c85946443f23ec8c59502Adam Cohen public boolean hasDrawn() { 211fc53cd22c9a78708c78c85946443f23ec8c59502Adam Cohen return mHasDrawn; 212fc53cd22c9a78708c78c85946443f23ec8c59502Adam Cohen } 213fc53cd22c9a78708c78c85946443f23ec8c59502Adam Cohen 2143e8f811f31a2275e778244427271f77f4116c08bAdam Cohen @Override 2153e8f811f31a2275e778244427271f77f4116c08bAdam Cohen public void setAlpha(float alpha) { 2163e8f811f31a2275e778244427271f77f4116c08bAdam Cohen super.setAlpha(alpha); 2173e8f811f31a2275e778244427271f77f4116c08bAdam Cohen mPaint.setAlpha((int) (255 * alpha)); 2183e8f811f31a2275e778244427271f77f4116c08bAdam Cohen invalidate(); 2193e8f811f31a2275e778244427271f77f4116c08bAdam Cohen } 2203e8f811f31a2275e778244427271f77f4116c08bAdam Cohen 22100acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato /** 22200acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato * Create a window containing this view and show it. 22300acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato * 22400acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato * @param windowToken obtained from v.getWindowToken() from one of your views 2258dfcba4af7a7ece09e8c7d96053e54f3a383e905Adam Cohen * @param touchX the x coordinate the user touched in DragLayer coordinates 2268dfcba4af7a7ece09e8c7d96053e54f3a383e905Adam Cohen * @param touchY the y coordinate the user touched in DragLayer coordinates 22700acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato */ 2288dfcba4af7a7ece09e8c7d96053e54f3a383e905Adam Cohen public void show(int touchX, int touchY) { 2298dfcba4af7a7ece09e8c7d96053e54f3a383e905Adam Cohen mDragLayer.addView(this); 2308dfcba4af7a7ece09e8c7d96053e54f3a383e905Adam Cohen DragLayer.LayoutParams lp = new DragLayer.LayoutParams(0, 0); 2318dfcba4af7a7ece09e8c7d96053e54f3a383e905Adam Cohen lp.width = mBitmap.getWidth(); 2328dfcba4af7a7ece09e8c7d96053e54f3a383e905Adam Cohen lp.height = mBitmap.getHeight(); 2338dfcba4af7a7ece09e8c7d96053e54f3a383e905Adam Cohen lp.customPosition = true; 2348dfcba4af7a7ece09e8c7d96053e54f3a383e905Adam Cohen setLayoutParams(lp); 2357bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung setTranslationX(touchX - mRegistrationX); 2367bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung setTranslationY(touchY - mRegistrationY); 237a669d79d0dcf034651ce305a8cd334272bec3374Patrick Dubroy mAnim.start(); 23800acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato } 239716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohen 2407bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung public void cancelAnimation() { 2417bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung if (mAnim != null && mAnim.isRunning()) { 2427bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung mAnim.cancel(); 2437bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung } 2447bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung } 2457bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung 2467bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung public void resetLayoutParams() { 2477bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung mOffsetX = mOffsetY = 0; 2487bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung requestLayout(); 2497bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung } 2507bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung 25100acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato /** 25200acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato * Move the window containing this view. 25300acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato * 2548dfcba4af7a7ece09e8c7d96053e54f3a383e905Adam Cohen * @param touchX the x coordinate the user touched in DragLayer coordinates 2558dfcba4af7a7ece09e8c7d96053e54f3a383e905Adam Cohen * @param touchY the y coordinate the user touched in DragLayer coordinates 25600acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato */ 25700acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato void move(int touchX, int touchY) { 2587bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung setTranslationX(touchX - mRegistrationX + (int) mOffsetX); 2597bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung setTranslationY(touchY - mRegistrationY + (int) mOffsetY); 26000acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato } 26100acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato 26200acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato void remove() { 2637bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung if (getParent() != null) { 2647bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung mDragLayer.removeView(DragView.this); 2657bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung } 2666f13342ffd3f968de9ff86b988621cc91d94adffPatrick Dubroy } 26700acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato} 26800acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato 269