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Improve Apps/Widgets transition

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- Avoid using a bitmap when doing crossfade when switching between Apps/Widgets tabs, also fixes a visual issue on stingray (5104303)

Change-Id: I7365c629e704f37e18350ad15a849c034553d0b3
This commit is contained in:
Michael Jurka
2011-11-03 13:50:45 -07:00
parent fd99e7776a
commit 141dbd0e02
3 changed files with 58 additions and 29 deletions
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63
src/com/android/launcher2/AppsCustomizeTabHost.java
View File

@@ -22,21 +22,20 @@ import android.animation.AnimatorSet;
import android.animation.ObjectAnimator;
import android.content.Context;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.DecelerateInterpolator;
import android.widget.ImageView;
import android.widget.FrameLayout;
import android.widget.TabHost;
import android.widget.TabWidget;
import android.widget.TextView;
import com.android.launcher.R;
import java.util.ArrayList;
public class AppsCustomizeTabHost extends TabHost implements LauncherTransitionable,
TabHost.OnTabChangeListener {
static final String LOG_TAG = "AppsCustomizeTabHost";
@@ -49,7 +48,7 @@ public class AppsCustomizeTabHost extends TabHost implements LauncherTransitiona
private ViewGroup mTabsContainer;
private AppsCustomizePagedView mAppsCustomizePane;
private boolean mSuppressContentCallback = false;
private ImageView mAnimationBuffer;
private FrameLayout mAnimationBuffer;
private boolean mInTransition;
private boolean mResetAfterTransition;
@@ -93,7 +92,7 @@ public class AppsCustomizeTabHost extends TabHost implements LauncherTransitiona
mTabs = tabs;
mTabsContainer = tabsContainer;
mAppsCustomizePane = appsCustomizePane;
mAnimationBuffer = (ImageView) findViewById(R.id.animation_buffer);
mAnimationBuffer = (FrameLayout) findViewById(R.id.animation_buffer);
if (tabs == null || mAppsCustomizePane == null) throw new Resources.NotFoundException();
// Configure the tabs content factory to return the same paged view (that we change the
@@ -138,9 +137,8 @@ public class AppsCustomizeTabHost extends TabHost implements LauncherTransitiona
// Set the width of the tab list to the content width
if (remeasureTabWidth) {
int contentWidth = mAppsCustomizePane.getPageContentWidth();
if (contentWidth > 0) {
// Set the width and show the tab bar (if we have a loading graphic, we can switch
// it off here)
if (contentWidth > 0 && mTabs.getLayoutParams().width != contentWidth) {
// Set the width and show the tab bar
mTabs.getLayoutParams().width = contentWidth;
post(new Runnable() {
public void run() {
@@ -202,17 +200,35 @@ public class AppsCustomizeTabHost extends TabHost implements LauncherTransitiona
return;
}
// Setup the animation buffer
Bitmap b = Bitmap.createBitmap(mAppsCustomizePane.getMeasuredWidth(),
mAppsCustomizePane.getMeasuredHeight(), Bitmap.Config.ARGB_8888);
Canvas c = new Canvas(b);
mAppsCustomizePane.draw(c);
mAppsCustomizePane.setAlpha(0f);
mAnimationBuffer.setImageBitmap(b);
mAnimationBuffer.setAlpha(1f);
mAnimationBuffer.setVisibility(View.VISIBLE);
c.setBitmap(null);
b = null;
// Take the visible pages and re-parent them temporarily to mAnimatorBuffer
// and then cross fade to the new pages
// We want the pages to be rendered in exactly the same way as they were when
// their parent was mAppsCustomizePane -- so set the scroll on mAnimationBuffer
// to be exactly the same as mAppsCustomizePane, and below, set the left/top
// parameters to be correct for each of the pages
mAnimationBuffer.scrollTo(mAppsCustomizePane.getScrollX(), 0);
int[] visiblePageRange = new int[2];
mAppsCustomizePane.getVisiblePages(visiblePageRange);
ArrayList<View> visiblePages = new ArrayList<View>();
for (int i = visiblePageRange[0]; i <= visiblePageRange[1]; i++) {
visiblePages.add(mAppsCustomizePane.getPageAt(i));
}
// mAppsCustomizePane renders its children in reverse order, so
// add the pages to mAnimationBuffer in reverse order to match that behavior
for (int i = visiblePages.size() - 1; i >= 0; i--) {
View child = visiblePages.get(i);
PagedViewWidget.setDeletePreviewsWhenDetachedFromWindow(false);
mAppsCustomizePane.removeView(child);
PagedViewWidget.setDeletePreviewsWhenDetachedFromWindow(true);
mAnimationBuffer.setAlpha(1f);
mAnimationBuffer.setVisibility(View.VISIBLE);
LayoutParams p = new FrameLayout.LayoutParams(child.getWidth(),
child.getHeight());
p.setMargins((int) child.getLeft(), (int) child.getTop(), 0, 0);
mAnimationBuffer.addView(child, p);
}
// Toggle the new content
onTabChangedStart();
@@ -224,7 +240,12 @@ public class AppsCustomizeTabHost extends TabHost implements LauncherTransitiona
@Override
public void onAnimationEnd(Animator animation) {
mAnimationBuffer.setVisibility(View.GONE);
mAnimationBuffer.setImageBitmap(null);
mAnimationBuffer.removeAllViews();
}
@Override
public void onAnimationCancel(Animator animation) {
mAnimationBuffer.setVisibility(View.GONE);
mAnimationBuffer.removeAllViews();
}
});
ObjectAnimator inAnim = ObjectAnimator.ofFloat(mAppsCustomizePane, "alpha", 1f);