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am 25415e2b: draw filtered if dragging but not moving after a 100ms delay

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Merge commit '25415e2b9c80050525a0ebd51cecdaa5b1396674' into eclair-mr2-plus-aosp

* commit '25415e2b9c80050525a0ebd51cecdaa5b1396674':
  draw filtered if dragging but not moving after a 100ms delay
This commit is contained in:
Cary Clark
2009-10-14 11:01:36 -07:00
committed by Android Git Automerger
parent e9b7d2f924 25415e2b9c
commit e585693352
1 changed files with 78 additions and 17 deletions
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95
core/java/android/webkit/WebView.java
View File

@ -390,6 +390,8 @@ public class WebView extends AbsoluteLayout
private static final int LONG_PRESS_TIMEOUT = 1000;
// needed to avoid flinging after a pause of no movement
private static final int MIN_FLING_TIME = 250;
// draw unfiltered after drag is held without movement
private static final int MOTIONLESS_TIME = 100;
// The time that the Zoom Controls are visible before fading away
private static final long ZOOM_CONTROLS_TIMEOUT =
ViewConfiguration.getZoomControlsTimeout();
@ -427,6 +429,10 @@ public class WebView extends AbsoluteLayout
private Scroller mScroller;
private boolean mWrapContent;
private static final int MOTIONLESS_FALSE = 0;
private static final int MOTIONLESS_PENDING = 1;
private static final int MOTIONLESS_TRUE = 2;
private int mHeldMotionless;
/**
* Private message ids
@ -438,6 +444,8 @@ public class WebView extends AbsoluteLayout
private static final int RELEASE_SINGLE_TAP = 5;
private static final int REQUEST_FORM_DATA = 6;
private static final int RESUME_WEBCORE_UPDATE = 7;
private static final int DRAG_HELD_MOTIONLESS = 8;
private static final int AWAKEN_SCROLL_BARS = 9;
//! arg1=x, arg2=y
static final int SCROLL_TO_MSG_ID = 10;
@ -468,9 +476,9 @@ public class WebView extends AbsoluteLayout
"SWITCH_TO_LONGPRESS", // = 4;
"RELEASE_SINGLE_TAP", // = 5;
"REQUEST_FORM_DATA", // = 6;
"SWITCH_TO_CLICK", // = 7;
"RESUME_WEBCORE_UPDATE", // = 8;
"9",
"RESUME_WEBCORE_UPDATE", // = 7;
"DRAG_HELD_MOTIONLESS", // = 8;
"AWAKEN_SCROLL_BARS", // = 9;
"SCROLL_TO_MSG_ID", // = 10;
"SCROLL_BY_MSG_ID", // = 11;
"SPAWN_SCROLL_TO_MSG_ID", // = 12;
@ -2870,8 +2878,22 @@ public class WebView extends AbsoluteLayout
}
boolean animateZoom = mZoomScale != 0;
boolean animateScroll = !mScroller.isFinished()
|| mVelocityTracker != null;
boolean animateScroll = (!mScroller.isFinished()
|| mVelocityTracker != null)
&& (mTouchMode != TOUCH_DRAG_MODE ||
mHeldMotionless != MOTIONLESS_TRUE);
if (mTouchMode == TOUCH_DRAG_MODE) {
if (mHeldMotionless == MOTIONLESS_PENDING) {
mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS);
mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS);
mHeldMotionless = MOTIONLESS_FALSE;
}
if (mHeldMotionless == MOTIONLESS_FALSE) {
mPrivateHandler.sendMessageDelayed(mPrivateHandler
.obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME);
mHeldMotionless = MOTIONLESS_PENDING;
}
}
if (animateZoom) {
float zoomScale;
int interval = (int) (SystemClock.uptimeMillis() - mZoomStart);
@ -3726,8 +3748,10 @@ public class WebView extends AbsoluteLayout
mLastSentTouchTime = eventTime;
}
int deltaX = (int) (mLastTouchX - x);
int deltaY = (int) (mLastTouchY - y);
float fDeltaX = mLastTouchX - x;
float fDeltaY = mLastTouchY - y;
int deltaX = (int) fDeltaX;
int deltaY = (int) fDeltaY;
switch (action) {
case MotionEvent.ACTION_DOWN: {
@ -3853,13 +3877,27 @@ public class WebView extends AbsoluteLayout
// do pan
int newScrollX = pinLocX(mScrollX + deltaX);
deltaX = newScrollX - mScrollX;
int newDeltaX = newScrollX - mScrollX;
if (deltaX != newDeltaX) {
deltaX = newDeltaX;
fDeltaX = (float) newDeltaX;
}
int newScrollY = pinLocY(mScrollY + deltaY);
deltaY = newScrollY - mScrollY;
int newDeltaY = newScrollY - mScrollY;
if (deltaY != newDeltaY) {
deltaY = newDeltaY;
fDeltaY = (float) newDeltaY;
}
boolean done = false;
if (deltaX == 0 && deltaY == 0) {
done = true;
boolean keepScrollBarsVisible = false;
if (Math.abs(fDeltaX) < 1.0f && Math.abs(fDeltaY) < 1.0f) {
keepScrollBarsVisible = done = true;
} else {
if (mHeldMotionless != MOTIONLESS_FALSE) {
mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS);
mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS);
mHeldMotionless = MOTIONLESS_FALSE;
}
if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) {
int ax = Math.abs(deltaX);
int ay = Math.abs(deltaY);
@ -3899,8 +3937,7 @@ public class WebView extends AbsoluteLayout
if (deltaX == 0) {
// keep the scrollbar on the screen even there is no
// scroll
awakenScrollBars(ViewConfiguration
.getScrollDefaultDelay(), false);
keepScrollBarsVisible = true;
} else {
scrollBy(deltaX, 0);
}
@ -3910,8 +3947,7 @@ public class WebView extends AbsoluteLayout
if (deltaY == 0) {
// keep the scrollbar on the screen even there is no
// scroll
awakenScrollBars(ViewConfiguration
.getScrollDefaultDelay(), false);
keepScrollBarsVisible = true;
} else {
scrollBy(0, deltaY);
}
@ -3938,13 +3974,17 @@ public class WebView extends AbsoluteLayout
}
}
if (done) {
if (keepScrollBarsVisible) {
if (mHeldMotionless != MOTIONLESS_TRUE) {
mHeldMotionless = MOTIONLESS_TRUE;
invalidate();
}
// keep the scrollbar on the screen even there is no scroll
awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(),
false);
// return false to indicate that we can't pan out of the
// view space
return false;
return !done;
}
break;
}
@ -3997,6 +4037,9 @@ public class WebView extends AbsoluteLayout
break;
}
case TOUCH_DRAG_MODE:
mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS);
mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS);
mHeldMotionless = MOTIONLESS_TRUE;
// redraw in high-quality, as we're done dragging
invalidate();
// if the user waits a while w/o moving before the
@ -4036,6 +4079,9 @@ public class WebView extends AbsoluteLayout
}
mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS);
mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS);
mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS);
mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS);
mHeldMotionless = MOTIONLESS_TRUE;
mTouchMode = TOUCH_DONE_MODE;
nativeHideCursor();
break;
@ -5203,6 +5249,21 @@ public class WebView extends AbsoluteLayout
}
break;
case DRAG_HELD_MOTIONLESS:
mHeldMotionless = MOTIONLESS_TRUE;
invalidate();
// fall through to keep scrollbars awake
case AWAKEN_SCROLL_BARS:
if (mTouchMode == TOUCH_DRAG_MODE
&& mHeldMotionless == MOTIONLESS_TRUE) {
awakenScrollBars(ViewConfiguration
.getScrollDefaultDelay(), false);
mPrivateHandler.sendMessageDelayed(mPrivateHandler
.obtainMessage(AWAKEN_SCROLL_BARS),
ViewConfiguration.getScrollDefaultDelay());
}
break;
default:
super.handleMessage(msg);
break;