DO NOT MERGE Integrate edge effects into WebView. (230269d4) · Commits · e / os / android_frameworks_base

core/java/android/webkit/WebView.java

+201 −27

Original line number	Diff line number	Diff line
		@@ -16,13 +16,16 @@

		package android.webkit;

		import com.android.internal.R;

		import android.annotation.Widget;
		import android.app.AlertDialog;
		import android.content.Context;
		import android.content.DialogInterface;
		import android.content.Intent;
		import android.content.DialogInterface.OnCancelListener;
		import android.content.Intent;
		import android.content.pm.PackageManager;
		import android.content.res.Resources;
		import android.database.DataSetObserver;
		import android.graphics.Bitmap;
		import android.graphics.BitmapFactory;
		@@ -30,7 +33,6 @@ import android.graphics.BitmapShader;
		import android.graphics.Canvas;
		import android.graphics.Color;
		import android.graphics.Interpolator;
		import android.graphics.Matrix;
		import android.graphics.Paint;
		import android.graphics.Picture;
		import android.graphics.Point;
		@@ -39,8 +41,8 @@ import android.graphics.RectF;
		import android.graphics.Region;
		import android.graphics.Shader;
		import android.graphics.drawable.Drawable;
		import android.net.http.SslCertificate;
		import android.net.Uri;
		import android.net.http.SslCertificate;
		import android.os.Bundle;
		import android.os.Handler;
		import android.os.Message;
		@@ -74,8 +76,10 @@ import android.webkit.WebViewCore.TouchEventData;
		import android.widget.AbsoluteLayout;
		import android.widget.Adapter;
		import android.widget.AdapterView;
		import android.widget.AdapterView.OnItemClickListener;
		import android.widget.ArrayAdapter;
		import android.widget.CheckedTextView;
		import android.widget.EdgeGlow;
		import android.widget.FrameLayout;
		import android.widget.LinearLayout;
		import android.widget.ListView;
		@@ -83,17 +87,15 @@ import android.widget.OverScroller;
		import android.widget.Toast;
		import android.widget.ZoomButtonsController;
		import android.widget.ZoomControls;
		import android.widget.AdapterView.OnItemClickListener;

		import java.io.File;
		import java.io.FileInputStream;
		import java.io.FileNotFoundException;
		import java.io.FileOutputStream;
		import java.io.IOException;
		import java.net.URLDecoder;
		import java.util.ArrayList;
		import java.util.List;
		import java.util.HashMap;
		import java.util.List;
		import java.util.Map;
		import java.util.Set;

		@@ -757,6 +759,27 @@ public class WebView extends AbsoluteLayout
		private int mHorizontalScrollBarMode = SCROLLBAR_AUTO;
		private int mVerticalScrollBarMode = SCROLLBAR_AUTO;

		/**
		* Max distance to overscroll by in pixels.
		* This how far content can be pulled beyond its normal bounds by the user.
		*/
		private int mOverscrollDistance;

		/**
		* Max distance to overfling by in pixels.
		* This is how far flinged content can move beyond the end of its normal bounds.
		*/
		private int mOverflingDistance;

		/*
		* These manage the edge glow effect when flung or pulled beyond the edges.
		* If one is not null, all are not null. Checking one for null is as good as checking each.
		*/
		private EdgeGlow mEdgeGlowTop;
		private EdgeGlow mEdgeGlowBottom;
		private EdgeGlow mEdgeGlowLeft;
		private EdgeGlow mEdgeGlowRight;

		// Used to match key downs and key ups
		private boolean mGotKeyDown;

		@@ -986,7 +1009,6 @@ public class WebView extends AbsoluteLayout
		setFocusableInTouchMode(true);
		setClickable(true);
		setLongClickable(true);
		setOverscrollMode(OVERSCROLL_NEVER);

		final ViewConfiguration configuration = ViewConfiguration.get(getContext());
		int slop = configuration.getScaledTouchSlop();
		@@ -1009,6 +1031,29 @@ public class WebView extends AbsoluteLayout
		mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE;
		mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE;
		mMaximumFling = configuration.getScaledMaximumFlingVelocity();
		mOverscrollDistance = configuration.getScaledOverscrollDistance();
		mOverflingDistance = configuration.getScaledOverflingDistance();
		}

		@Override
		public void setOverscrollMode(int mode) {
		super.setOverscrollMode(mode);
		if (mode != OVERSCROLL_NEVER) {
		if (mEdgeGlowTop == null) {
		final Resources res = getContext().getResources();
		final Drawable edge = res.getDrawable(R.drawable.edge_light);
		final Drawable glow = res.getDrawable(R.drawable.overscroll_glow);
		mEdgeGlowTop = new EdgeGlow(edge, glow);
		mEdgeGlowBottom = new EdgeGlow(edge, glow);
		mEdgeGlowLeft = new EdgeGlow(edge, glow);
		mEdgeGlowRight = new EdgeGlow(edge, glow);
		}
		} else {
		mEdgeGlowTop = null;
		mEdgeGlowBottom = null;
		mEdgeGlowLeft = null;
		mEdgeGlowRight = null;
		}
		}

		/* package */void updateDefaultZoomDensity(int zoomDensity) {
		@@ -2500,6 +2545,9 @@ public class WebView extends AbsoluteLayout
		protected void onDrawVerticalScrollBar(Canvas canvas,
		Drawable scrollBar,
		int l, int t, int r, int b) {
		if (mScrollY < 0) {
		t -= mScrollY;
		}
		scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b);
		scrollBar.draw(canvas);
		}
		@@ -2518,6 +2566,12 @@ public class WebView extends AbsoluteLayout
		if (scrollY < 0 \|\| scrollY > computeMaxScrollY()) {
		mInOverScrollMode = true;
		}

		if ((clampedX && maxX > 0) \|\| clampedY) {
		// Hitting a scroll barrier breaks velocity; don't fling further.
		mVelocityTracker.clear();
		mLastVelocity = 0;
		}
		super.scrollTo(scrollX, scrollY);
		}

		@@ -2876,12 +2930,35 @@ public class WebView extends AbsoluteLayout
		int oldY = mScrollY;
		int x = mScroller.getCurrX();
		int y = mScroller.getCurrY();
		postInvalidate(); // So we draw again
		invalidate(); // So we draw again

		if (oldX != x \|\| oldY != y) {
		final int rangeX = computeMaxScrollX();
		final int rangeY = computeMaxScrollY();
		overscrollBy(x - oldX, y - oldY, oldX, oldY,
		computeMaxScrollX(), computeMaxScrollY(),
		getViewWidth() / 3, getViewHeight() / 3, false);
		rangeX, rangeY,
		mOverflingDistance, mOverflingDistance, false);

		if (mEdgeGlowTop != null) {
		if (rangeY > 0 \|\| getOverscrollMode() == OVERSCROLL_ALWAYS) {
		if (y < 0 && oldY >= 0) {
		mEdgeGlowTop.onAbsorb((int) mScroller.getCurrVelocity());
		} else if (y > rangeY && oldY <= rangeY) {
		mEdgeGlowBottom.onAbsorb((int) mScroller.getCurrVelocity());
		}
		}

		if (rangeX > 0) {
		if (x < 0 && oldX >= 0) {
		mEdgeGlowLeft.onAbsorb((int) mScroller.getCurrVelocity());
		} else if (x > rangeX && oldX <= rangeX) {
		mEdgeGlowRight.onAbsorb((int) mScroller.getCurrVelocity());
		}
		}
		}
		}
		if (mScroller.isFinished()) {
		mPrivateHandler.sendEmptyMessage(RESUME_WEBCORE_PRIORITY);
		}
		} else {
		super.computeScroll();
		@@ -3292,13 +3369,8 @@ public class WebView extends AbsoluteLayout
		protected boolean drawChild(Canvas canvas, View child, long drawingTime) {
		if (child == mTitleBar) {
		// When drawing the title bar, move it horizontally to always show
		// at the top of the WebView. While overscroll, stick the title bar
		// on the top otherwise we may have two during loading, one is drawn
		// here, another is drawn by the Browser.
		// at the top of the WebView.
		mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft());
		if (mScrollY <= 0) {
		mTitleBar.offsetTopAndBottom(mScrollY - mTitleBar.getTop());
		}
		}
		return super.drawChild(canvas, child, drawingTime);
		}
		@@ -3349,7 +3421,7 @@ public class WebView extends AbsoluteLayout
		mOverScrollBorder.setColor(0xffbbbbbb);
		}

		int top = getTitleHeight();
		int top = 0;
		int right = computeRealHorizontalScrollRange();
		int bottom = top + computeRealVerticalScrollRange();
		// first draw the background and anchor to the top of the view
		@@ -3389,12 +3461,72 @@ public class WebView extends AbsoluteLayout
		mScrollY + height);
		mTitleShadow.draw(canvas);
		}

		if (AUTO_REDRAW_HACK && mAutoRedraw) {
		invalidate();
		}
		mWebViewCore.signalRepaintDone();
		}

		@Override
		protected void dispatchDraw(Canvas canvas) {
		super.dispatchDraw(canvas);
		if (mEdgeGlowTop != null && drawEdgeGlows(canvas)) {
		invalidate();
		}
		}

		/**
		* Draw the glow effect along the sides of the widget. mEdgeGlow* must be non-null.
		*
		* @param canvas Canvas to draw into, transformed into view coordinates.
		* @return true if glow effects are still animating and the view should invalidate again.
		*/
		private boolean drawEdgeGlows(Canvas canvas) {
		final int scrollX = mScrollX;
		final int scrollY = mScrollY;
		final int width = getWidth();
		int height = getHeight();

		boolean invalidateForGlow = false;
		if (!mEdgeGlowTop.isFinished()) {
		final int restoreCount = canvas.save();

		canvas.translate(-width / 2 + scrollX, scrollY);
		mEdgeGlowTop.setSize(width * 2, height);
		invalidateForGlow \|= mEdgeGlowTop.draw(canvas);
		canvas.restoreToCount(restoreCount);
		}
		if (!mEdgeGlowBottom.isFinished()) {
		final int restoreCount = canvas.save();

		canvas.translate(-width / 2 - scrollX, scrollY + height);
		canvas.rotate(180, width, 0);
		mEdgeGlowBottom.setSize(width * 2, height);
		invalidateForGlow \|= mEdgeGlowBottom.draw(canvas);
		canvas.restoreToCount(restoreCount);
		}
		if (!mEdgeGlowLeft.isFinished()) {
		final int restoreCount = canvas.save();

		canvas.rotate(270);
		canvas.translate(-height * 1.5f - scrollY, scrollX);
		mEdgeGlowLeft.setSize(height * 2, width);
		invalidateForGlow \|= mEdgeGlowLeft.draw(canvas);
		canvas.restoreToCount(restoreCount);
		}
		if (!mEdgeGlowRight.isFinished()) {
		final int restoreCount = canvas.save();

		canvas.rotate(90);
		canvas.translate(-height / 2 + scrollY, -scrollX - width);
		mEdgeGlowRight.setSize(height * 2, width);
		invalidateForGlow \|= mEdgeGlowRight.draw(canvas);
		canvas.restoreToCount(restoreCount);
		}
		return invalidateForGlow;
		}

		@Override
		public void setLayoutParams(ViewGroup.LayoutParams params) {
		if (params.height == LayoutParams.WRAP_CONTENT) {
		@@ -5386,9 +5518,34 @@ public class WebView extends AbsoluteLayout

		private void doDrag(int deltaX, int deltaY) {
		if ((deltaX \| deltaY) != 0) {
		overscrollBy(deltaX, deltaY, mScrollX, mScrollY,
		computeMaxScrollX(), computeMaxScrollY(),
		getViewWidth() / 3, getViewHeight() / 3, true);
		final int oldX = mScrollX;
		final int oldY = mScrollY;
		final int rangeX = computeMaxScrollX();
		final int rangeY = computeMaxScrollY();
		overscrollBy(deltaX, deltaY, oldX, oldY,
		rangeX, rangeY,
		mOverscrollDistance, mOverscrollDistance, true);

		if (mEdgeGlowTop != null) {
		// Don't show left/right glows if we fit the whole content.
		if (rangeX > 0) {
		final int pulledToX = oldX + deltaX;
		if (pulledToX < 0) {
		mEdgeGlowLeft.onPull((float) deltaX / getWidth());
		} else if (pulledToX > rangeX) {
		mEdgeGlowRight.onPull((float) deltaX / getWidth());
		}
		}

		if (rangeY > 0 \|\| getOverscrollMode() == OVERSCROLL_ALWAYS) {
		final int pulledToY = oldY + deltaY;
		if (pulledToY < 0) {
		mEdgeGlowTop.onPull((float) deltaY / getHeight());
		} else if (pulledToY > rangeY) {
		mEdgeGlowBottom.onPull((float) deltaY / getHeight());
		}
		}
		}
		}
		if (!getSettings().getBuiltInZoomControls()) {
		boolean showPlusMinus = mMinZoomScale < mMaxZoomScale;
		@@ -5415,6 +5572,14 @@ public class WebView extends AbsoluteLayout
		mVelocityTracker.recycle();
		mVelocityTracker = null;
		}

		// Release any pulled glows
		if (mEdgeGlowTop != null) {
		mEdgeGlowTop.onRelease();
		mEdgeGlowBottom.onRelease();
		mEdgeGlowLeft.onRelease();
		mEdgeGlowRight.onRelease();
		}
		}

		private void cancelTouch() {
		@@ -5428,6 +5593,15 @@ public class WebView extends AbsoluteLayout
		mVelocityTracker.recycle();
		mVelocityTracker = null;
		}

		// Release any pulled glows
		if (mEdgeGlowTop != null) {
		mEdgeGlowTop.onRelease();
		mEdgeGlowBottom.onRelease();
		mEdgeGlowLeft.onRelease();
		mEdgeGlowRight.onRelease();
		}

		if (mTouchMode == TOUCH_DRAG_MODE) {
		WebViewCore.resumePriority();
		WebViewCore.resumeUpdatePicture(mWebViewCore);
		@@ -5746,7 +5920,7 @@ public class WebView extends AbsoluteLayout

		public void flingScroll(int vx, int vy) {
		mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0,
		computeMaxScrollY(), getViewWidth() / 3, getViewHeight() / 3);
		computeMaxScrollY(), mOverflingDistance, mOverflingDistance);
		invalidate();
		}

		@@ -5809,13 +5983,13 @@ public class WebView extends AbsoluteLayout

		// no horizontal overscroll if the content just fits
		mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY,
		maxX == 0 ? 0 : getViewWidth() / 3, getViewHeight() / 3);
		// TODO: duration is calculated based on velocity, if the range is
		// small, the animation will stop before duration is up. We may
		// want to calculate how long the animation is going to run to precisely
		// resume the webcore update.
		maxX == 0 ? 0 : mOverflingDistance, mOverflingDistance);
		// Duration is calculated based on velocity. With range boundaries and overscroll
		// we may not know how long the final animation will take. (Hence the deprecation
		// warning on the call below.) It's not a big deal for scroll bars but if webcore
		// resumes during this effect we will take a performance hit. See computeScroll;
		// we resume webcore there when the animation is finished.
		final int time = mScroller.getDuration();
		mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_PRIORITY, time);
		awakenScrollBars(time);
		invalidate();
		}

core/java/android/widget/EdgeGlow.java

+1 −1

Original line number	Diff line number	Diff line
		@@ -213,7 +213,7 @@ public class EdgeGlow {
		final int glowHeight = mGlow.getIntrinsicHeight();

		mGlow.setAlpha((int) (Math.max(0, Math.min(mGlowAlpha, 1)) * 255));
		mGlow.setBounds(0, 0, mWidth, (int) (glowHeight * mGlowScaleY));
		mGlow.setBounds(0, 0, mWidth, (int) (glowHeight * mGlowScaleY * 0.5f));
		mGlow.draw(canvas);

		mEdge.setAlpha((int) (Math.max(0, Math.min(mEdgeAlpha, 1)) * 255));

core/java/android/widget/OverScroller.java

+1 −1

Original line number	Diff line number	Diff line
		@@ -523,7 +523,7 @@ public class OverScroller {
		// If the velocity is smaller than this value, no bounce is triggered
		// when the edge limits are reached (would result in a zero pixels
		// displacement anyway).
		private static final float MINIMUM_VELOCITY_FOR_BOUNCE = 140.0f;
		private static final float MINIMUM_VELOCITY_FOR_BOUNCE = Float.MAX_VALUE;//140.0f;

		// Proportion of the velocity that is preserved when the edge is reached.
		private static final float DEFAULT_BOUNCE_COEFFICIENT = 0.16f;