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Add the animation for when you enter the all apps view.

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This commit is contained in:
Joe Onorato
2009-09-08 12:34:22 -07:00
parent 8355ae39ad
commit 85a02a8d13
8 changed files with 451 additions and 70 deletions
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src/com/android/launcher2/Workspace.java
+25 -32
View File
@@ -46,8 +46,9 @@ import java.util.ArrayList;
* screen contains a number of icons, folders or widgets the user can interact with.
* A workspace is meant to be used with a fixed width only.
*/
public class Workspace extends ViewGroup implements DropTarget, DragSource, DragScroller,
TweenCallback {
public class Workspace extends ViewGroup implements DropTarget, DragSource, DragScroller {
private static final String TAG = "Launcher.Workspace";
private static final int INVALID_SCREEN = -1;
/**
@@ -66,9 +67,6 @@ public class Workspace extends ViewGroup implements DropTarget, DragSource, Drag
private Scroller mScroller;
private VelocityTracker mVelocityTracker;
private SymmetricalLinearTween mTween;
private int mAlpha = 255;
/**
* CellInfo for the cell that is currently being dragged
*/
@@ -150,8 +148,6 @@ public class Workspace extends ViewGroup implements DropTarget, DragSource, Drag
final ViewConfiguration configuration = ViewConfiguration.get(getContext());
mTouchSlop = configuration.getScaledTouchSlop();
mMaximumVelocity = configuration.getScaledMaximumFlingVelocity();
mTween = new SymmetricalLinearTween(true, 250/*ms*/, this);
}
@Override
@@ -486,12 +482,24 @@ public class Workspace extends ViewGroup implements DropTarget, DragSource, Drag
int restoreCount = 0;
// For the fade. If view gets setAlpha(), use that instead.
int alpha = mAlpha;
if (alpha < 255) {
float scale = mScale;
if (scale < 0.999f) {
int sx = mScrollX;
int alpha = (scale < 0.5f) ? (int)(255 * 2 * scale) : 255;
restoreCount = canvas.saveLayerAlpha(sx, 0, sx+getWidth(), getHeight(), alpha,
Canvas.HAS_ALPHA_LAYER_SAVE_FLAG | Canvas.CLIP_TO_LAYER_SAVE_FLAG);
restore = true;
if (scale < 0.999f) {
int w = getWidth();
w += 2 * mCurrentScreen * w;
int h = getHeight();
canvas.translate(w/2, h/2);
canvas.scale(scale, scale);
canvas.translate(-w/2, -h/2);
}
}
// ViewGroup.dispatchDraw() supports many features we don't need:
@@ -499,7 +507,8 @@ public class Workspace extends ViewGroup implements DropTarget, DragSource, Drag
// children, etc. The following implementation attempts to fast-track
// the drawing dispatch by drawing only what we know needs to be drawn.
boolean fastDraw = mTouchState != TOUCH_STATE_SCROLLING && mNextScreen == INVALID_SCREEN;
boolean fastDraw = mTouchState != TOUCH_STATE_SCROLLING && mNextScreen == INVALID_SCREEN
&& scale > 0.999f;
// If we are not scrolling or flinging, draw only the current screen
if (fastDraw) {
drawChild(canvas, getChildAt(mCurrentScreen), getDrawingTime());
@@ -524,6 +533,12 @@ public class Workspace extends ViewGroup implements DropTarget, DragSource, Drag
}
}
private float mScale = 1.0f;
public void setScale(float scale) {
mScale = scale;
invalidate();
}
protected void onAttachedToWindow() {
super.onAttachedToWindow();
mDragController.setWindowToken(getWindowToken());
@@ -1335,31 +1350,9 @@ public class Workspace extends ViewGroup implements DropTarget, DragSource, Drag
}
void show() {
mTween.start(true);
setVisibility(VISIBLE);
}
void hide() {
mTween.start(false);
}
public void onTweenValueChanged(float value, float oldValue) {
mAlpha = (int)(255*value);
invalidate();
}
public void onTweenStarted() {
// TODO: This conflicts with the cache for drawing. Ref count instead?
// TODO: Don't cache all three.
enableChildrenCache();
}
public void onTweenFinished() {
// TODO: This conflicts with the cache for drawing. Ref count instead?
// TODO: Don't cache all three.
clearChildrenCache();
if (mAlpha == 0) {
setVisibility(GONE);
}
}
}