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Touch pad improvements.

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Bug: 4124987

Only show one spot per touch point instead of one spot per
finger for multitouch gestures.

Tweaked the pointer acceleration curves.

Dissociated the hover/tap timeouts from the "tap" timeout
since they mean very different things.

Change-Id: I7c2cbd30feeb65ebc12f6c7e33a67dc9a9f59d4c
This commit is contained in:
Jeff Brown
2011-06-06 19:23:05 -07:00
parent 7f5b99676f
commit bb3fcba0ca
5 changed files with 242 additions and 191 deletions
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40
core/java/android/view/ViewConfiguration.java
View File

@@ -111,7 +111,21 @@ public class ViewConfiguration {
* double-tap.
*/
private static final int DOUBLE_TAP_TIMEOUT = 300;
/**
* Defines the maximum duration in milliseconds between a touch pad
* touch and release for a given touch to be considered a tap (click) as
* opposed to a hover movement gesture.
*/
private static final int HOVER_TAP_TIMEOUT = 150;
/**
* Defines the maximum distance in pixels that a touch pad touch can move
* before being released for it to be considered a tap (click) as opposed
* to a hover movement gesture.
*/
private static final int HOVER_TAP_SLOP = 20;
/**
* Defines the duration in milliseconds we want to display zoom controls in response
* to a user panning within an application.
@@ -360,7 +374,7 @@ public class ViewConfiguration {
public static int getTapTimeout() {
return TAP_TIMEOUT;
}
/**
* @return the duration in milliseconds we will wait to see if a touch event
* is a jump tap. If the user does not move within this interval, it is
@@ -378,7 +392,27 @@ public class ViewConfiguration {
public static int getDoubleTapTimeout() {
return DOUBLE_TAP_TIMEOUT;
}
/**
* @return the maximum duration in milliseconds between a touch pad
* touch and release for a given touch to be considered a tap (click) as
* opposed to a hover movement gesture.
* @hide
*/
public static int getHoverTapTimeout() {
return HOVER_TAP_TIMEOUT;
}
/**
* @return the maximum distance in pixels that a touch pad touch can move
* before being released for it to be considered a tap (click) as opposed
* to a hover movement gesture.
* @hide
*/
public static int getHoverTapSlop() {
return HOVER_TAP_SLOP;
}
/**
* @return Inset in pixels to look for touchable content when the user touches the edge of the
* screen