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3029324 wip: Drop target crossfades as it moves from position to position

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This commit is contained in:
Winson Chung
2010-09-29 17:14:26 -07:00
committed by Patrick Dubroy
parent f34bab59fc
commit 150fbab7de
3 changed files with 151 additions and 25 deletions
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100
src/com/android/launcher2/CellLayout.java
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@@ -31,13 +31,14 @@ import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.util.Log;
import android.view.ContextMenu;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewDebug;
import android.view.ViewGroup;
import android.view.animation.Animation;
import android.view.animation.DecelerateInterpolator;
import android.view.animation.Interpolator;
import android.view.animation.LayoutAnimationController;
import java.util.Arrays;
@@ -79,15 +80,23 @@ public class CellLayout extends ViewGroup implements Dimmable {
private Drawable mBackground;
private Drawable mBackgroundMini;
private Drawable mBackgroundMiniHover;
// If we're actively dragging something over this screen and it's small,
// mHover is true
// If we're actively dragging something over this screen and it's small, mHover is true
private boolean mHover = false;
private final RectF mDragRect = new RectF();
private final Point mDragCenter = new Point();
private Drawable mDragRectDrawable;
// These arrays are used to implement the drag visualization on x-large screens.
// They are used as circular arrays, indexed by mDragRectCurrent.
private Rect[] mDragRects = new Rect[8];
private int[] mDragRectAlphas = new int[mDragRects.length];
private InterruptibleInOutAnimator[] mDragRectAnims =
new InterruptibleInOutAnimator[mDragRects.length];
// Used as an index into the above 3 arrays; indicates which is the most current value.
private int mDragRectCurrent = 0;
private Drawable mCrosshairsDrawable = null;
private ValueAnimator mCrosshairsAnimator = null;
private float mCrosshairsVisibility = 0.0f;
@@ -139,15 +148,18 @@ public class CellLayout extends ViewGroup implements Dimmable {
if (LauncherApplication.isScreenXLarge()) {
final Resources res = getResources();
mBackgroundMini = getResources().getDrawable(R.drawable.mini_home_screen_bg);
mBackgroundMini = res.getDrawable(R.drawable.mini_home_screen_bg);
mBackgroundMini.setFilterBitmap(true);
mBackground = getResources().getDrawable(R.drawable.home_screen_bg);
mBackground = res.getDrawable(R.drawable.home_screen_bg);
mBackground.setFilterBitmap(true);
mBackgroundMiniHover = getResources().getDrawable(R.drawable.mini_home_screen_bg_hover);
mBackgroundMiniHover = res.getDrawable(R.drawable.mini_home_screen_bg_hover);
mBackgroundMiniHover.setFilterBitmap(true);
// Initialize the data structures used for the drag visualization.
mDragRectDrawable = res.getDrawable(R.drawable.rounded_rect_green);
mCrosshairsDrawable = res.getDrawable(R.drawable.gardening_crosshairs);
Interpolator interp = new DecelerateInterpolator(2.5f); // Quint ease out
// Set up the animation for fading the crosshairs in and out
int animDuration = res.getInteger(R.integer.config_crosshairsFadeInTime);
@@ -158,6 +170,32 @@ public class CellLayout extends ViewGroup implements Dimmable {
CellLayout.this.invalidate();
}
});
mCrosshairsAnimator.setInterpolator(interp);
for (int i = 0; i < mDragRects.length; i++) {
mDragRects[i] = new Rect();
}
// When dragging things around the home screens, we show a green outline of
// where the item will land. The outlines gradually fade out, leaving a trail
// behind the drag path.
// Set up all the animations that are used to implement this fading.
final int duration = res.getInteger(R.integer.config_dragOutlineFadeTime);
final int fromAlphaValue = 0;
final int toAlphaValue = res.getInteger(R.integer.config_dragOutlineMaxAlpha);
for (int i = 0; i < mDragRectAnims.length; i++) {
final InterruptibleInOutAnimator anim =
new InterruptibleInOutAnimator(duration, fromAlphaValue, toAlphaValue);
anim.setInterpolator(interp);
final int thisIndex = i;
anim.addUpdateListener(new AnimatorUpdateListener() {
public void onAnimationUpdate(ValueAnimator animation) {
mDragRectAlphas[thisIndex] = (Integer) animation.getAnimatedValue();
CellLayout.this.invalidate(mDragRects[thisIndex]);
}
});
mDragRectAnims[i] = anim;
}
}
}
@@ -200,16 +238,6 @@ public class CellLayout extends ViewGroup implements Dimmable {
final int countX = mCountX;
final int countY = mCountY;
if (!mDragRect.isEmpty()) {
mDragRectDrawable.setBounds(
(int)mDragRect.left,
(int)mDragRect.top,
(int)mDragRect.right,
(int)mDragRect.bottom);
mDragRectDrawable.setAlpha((int) (mCrosshairsVisibility * 255));
mDragRectDrawable.draw(canvas);
}
final float MAX_ALPHA = 0.4f;
final int MAX_VISIBLE_DISTANCE = 600;
final float DISTANCE_MULTIPLIER = 0.002f;
@@ -236,6 +264,15 @@ public class CellLayout extends ViewGroup implements Dimmable {
}
x += mCellWidth + mWidthGap;
}
for (int i = 0; i < mDragRects.length; i++) {
int alpha = mDragRectAlphas[i];
if (alpha > 0) {
mDragRectDrawable.setAlpha(alpha);
mDragRectDrawable.setBounds(mDragRects[i]);
mDragRectDrawable.draw(canvas);
}
}
}
}
@@ -751,13 +788,23 @@ public class CellLayout extends ViewGroup implements Dimmable {
final int left = topLeft[0];
final int top = topLeft[1];
// Now find the bottom right
final int[] bottomRight = mTmpPoint;
cellToPoint(nearest[0] + spanX - 1, nearest[1] + spanY - 1, bottomRight);
bottomRight[0] += mCellWidth;
bottomRight[1] += mCellHeight;
mDragRect.set(left, top, bottomRight[0], bottomRight[1]);
invalidate();
final Rect dragRect = mDragRects[mDragRectCurrent];
if (dragRect.isEmpty() || left != dragRect.left || top != dragRect.top) {
// Now find the bottom right
final int[] bottomRight = mTmpPoint;
cellToPoint(nearest[0] + spanX - 1, nearest[1] + spanY - 1, bottomRight);
bottomRight[0] += mCellWidth;
bottomRight[1] += mCellHeight;
final int oldIndex = mDragRectCurrent;
mDragRectCurrent = (oldIndex + 1) % mDragRects.length;
mDragRects[mDragRectCurrent].set(left, top, bottomRight[0], bottomRight[1]);
mDragRectAnims[oldIndex].animateOut();
mDragRectAnims[mDragRectCurrent].animateIn();
}
}
}
@@ -973,6 +1020,10 @@ public class CellLayout extends ViewGroup implements Dimmable {
if (mCrosshairsAnimator != null) {
animateCrosshairsTo(0.0f);
}
mDragRectAnims[mDragRectCurrent].animateOut();
mDragRectCurrent = (mDragRectCurrent + 1) % mDragRects.length;
mDragRects[mDragRectCurrent].setEmpty();
}
/**
@@ -1015,7 +1066,6 @@ public class CellLayout extends ViewGroup implements Dimmable {
* or it may have begun on another layout.
*/
void onDragEnter(View dragView) {
mDragRect.setEmpty();
// Fade in the drag indicators
if (mCrosshairsAnimator != null) {
animateCrosshairsTo(1.0f);