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Tweak the Gestures Overlay demo. This shortens the fade duration to make it more usable and also adds a longer pause before the fade. This change also introduce a new compile-time setting to decide whether or not the overlay should steal the events from the underlying ListView. It is now off by default, per discussion with hackbod. It feel a little bit better but it may vary from user to user so studies will be necessary.

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This commit is contained in:
Romain Guy
2009-05-20 16:58:44 -07:00
parent b204d4f127
commit 7269d9ac10
3 changed files with 24 additions and 13 deletions
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8
tests/sketch/src/com/android/gesture/GestureOverlay.java
View File

@@ -41,8 +41,10 @@ public class GestureOverlay extends View {
// TODO: Move all these values into XML attributes
private static final int TRANSPARENT_BACKGROUND = 0x00000000;
private static final float FADING_ALPHA_CHANGE = 0.03f;
private static final long FADING_REFRESHING_RATE = 100;
// TODO: SHOULD BE A TOTAL DURATION
private static final float FADING_ALPHA_CHANGE = 0.15f;
private static final long FADING_OFFSET = 300;
private static final long FADING_REFRESHING_RATE = 16;
private static final int GESTURE_STROKE_WIDTH = 12;
private static final boolean GESTURE_RENDERING_ANTIALIAS = true;
@@ -235,7 +237,7 @@ public class GestureOverlay extends View {
mFadingAlpha = 1;
mIsFadingOut = true;
mHandler.removeCallbacks(mFadingOut);
mHandler.postDelayed(mFadingOut, FADING_REFRESHING_RATE);
mHandler.postDelayed(mFadingOut, FADING_OFFSET);
} else {
mPath = null;
mCurrentGesture = null;

21
tests/sketch/src/com/android/gesture/TouchThroughGesturing.java
View File

@@ -37,6 +37,8 @@ public class TouchThroughGesturing implements GestureListener {
private static final float SQUARENESS_THRESHOLD = 0.275f;
private static final float ANGLE_THRESHOLD = 40;
private static final boolean STEAL_EVENTS = false;
public static final int DEFAULT_UNCERTAIN_GESTURE_COLOR = Color.argb(60, 255, 255, 0);
private boolean mIsGesturing = false;
@@ -91,6 +93,11 @@ public class TouchThroughGesturing implements GestureListener {
}
public void onGesture(GestureOverlay overlay, MotionEvent event) {
//noinspection PointlessBooleanExpression
if (!STEAL_EVENTS) {
mModel.dispatchTouchEvent(event);
}
if (mIsGesturing) {
return;
}
@@ -114,14 +121,18 @@ public class TouchThroughGesturing implements GestureListener {
if (box.squareness > SQUARENESS_THRESHOLD || angle < ANGLE_THRESHOLD) {
mIsGesturing = true;
overlay.setGestureColor(GestureOverlay.DEFAULT_GESTURE_COLOR);
event = MotionEvent.obtain(event.getDownTime(), System.currentTimeMillis(),
MotionEvent.ACTION_UP, x, y, event.getPressure(), event.getSize(),
event.getMetaState(), event.getXPrecision(), event.getYPrecision(),
event.getDeviceId(), event.getEdgeFlags());
if (STEAL_EVENTS) {
event = MotionEvent.obtain(event.getDownTime(), System.currentTimeMillis(),
MotionEvent.ACTION_UP, x, y, event.getPressure(), event.getSize(),
event.getMetaState(), event.getXPrecision(), event.getYPrecision(),
event.getDeviceId(), event.getEdgeFlags());
}
}
}
mModel.dispatchTouchEvent(event);
if (STEAL_EVENTS) {
mModel.dispatchTouchEvent(event);
}
}
public void onFinishGesture(GestureOverlay overlay, MotionEvent event) {

8
tests/sketch/src/com/android/gesture/example/ContactListGestureOverlay.java
View File

@@ -50,8 +50,6 @@ public class ContactListGestureOverlay extends Activity {
People.DISPLAY_NAME, // 1
};
private GestureOverlay mOverlay;
private ContactAdapter mContactAdapter;
private TouchThroughGesturing mGestureProcessor;
@@ -97,7 +95,7 @@ public class ContactListGestureOverlay extends Activity {
setProgressBarIndeterminateVisibility(false);
// add a gesture overlay on top of the ListView
mOverlay = new GestureOverlay(this);
GestureOverlay overlay = new GestureOverlay(this);
mGestureProcessor = new TouchThroughGesturing(mContactList);
mGestureProcessor.setGestureType(TouchThroughGesturing.MULTIPLE_STROKE);
mGestureProcessor.addGestureActionListener(new GestureActionListener() {
@@ -114,9 +112,9 @@ public class ContactListGestureOverlay extends Activity {
}
}
});
mOverlay.addGestureListener(mGestureProcessor);
overlay.addGestureListener(mGestureProcessor);
ViewGroup.LayoutParams params = new ViewGroup.LayoutParams(
ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.FILL_PARENT);
this.addContentView(mOverlay, params);
this.addContentView(overlay, params);
}
}