private void trySlideAttachmentView(final ViewWrapper viewWrapper) {
if (!(viewWrapper.attachment instanceof MediaPickerMessagePartData)) {
return;
}
final View view = viewWrapper.view;
final int xOffset = viewWrapper.prevLeft - view.getLeft();
final int yOffset = viewWrapper.prevTop - view.getTop();
final float scaleX = viewWrapper.prevWidth / (float) view.getWidth();
final float scaleY = viewWrapper.prevHeight / (float) view.getHeight();
if (xOffset == 0 && yOffset == 0 && scaleX == 1 && scaleY == 1) {
// Layout hasn't changed
return;
}
final AnimationSet animationSet = new AnimationSet(true /* shareInterpolator */);
animationSet.addAnimation(new TranslateAnimation(xOffset, 0, yOffset, 0));
animationSet.addAnimation(new ScaleAnimation(scaleX, 1, scaleY, 1));
animationSet.setDuration(UiUtils.MEDIAPICKER_TRANSITION_DURATION);
animationSet.setInterpolator(UiUtils.DEFAULT_INTERPOLATOR);
view.startAnimation(animationSet);
view.invalidate();
viewWrapper.prevLeft = view.getLeft();
viewWrapper.prevTop = view.getTop();
viewWrapper.prevWidth = view.getWidth();
viewWrapper.prevHeight = view.getHeight();
}
public View getView(int position, View convertView, ViewGroup parent) {
ViewWrapper wrap = null;
View row = convertView;
if (convertView == null) {
LinearLayout layout = new LinearLayout(ctxt);
RatingBar rate = new RatingBar(ctxt);
rate.setNumStars(3);
rate.setStepSize(1.0f);
View guts = delegate.getView(position, null, parent);
layout.setOrientation(LinearLayout.HORIZONTAL);
rate.setLayoutParams(
new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.FILL_PARENT));
guts.setLayoutParams(
new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.FILL_PARENT, LinearLayout.LayoutParams.FILL_PARENT));
RatingBar.OnRatingBarChangeListener l =
new RatingBar.OnRatingBarChangeListener() {
public void onRatingChanged(RatingBar ratingBar, float rating, boolean fromTouch) {
rates[(Integer) ratingBar.getTag()] = rating;
}
};
rate.setOnRatingBarChangeListener(l);
layout.addView(rate);
layout.addView(guts);
wrap = new ViewWrapper(layout);
wrap.setGuts(guts);
layout.setTag(wrap);
rate.setTag(new Integer(position));
rate.setRating(rates[position]);
row = layout;
} else {
wrap = (ViewWrapper) convertView.getTag();
wrap.setGuts(delegate.getView(position, wrap.getGuts(), parent));
wrap.getRatingBar().setTag(new Integer(position));
wrap.getRatingBar().setRating(rates[position]);
}
return (row);
}
@Override
protected void onLayout(
final boolean changed, final int left, final int top, final int right, final int bottom) {
final int cellWidth = getMeasuredWidth() / GRID_WIDTH;
final int cellHeight = getMeasuredHeight() / GRID_HEIGHT;
final int padding =
getResources().getDimensionPixelOffset(R.dimen.multiple_attachment_preview_padding);
final int count = mPreviewViews.size();
for (int i = 0; i < count; i++) {
final ViewWrapper viewWrapper = mPreviewViews.get(i);
final View view = viewWrapper.view;
final Tile imageTile = mCurrentLayout.tiles.get(i);
final int tileLeft = imageTile.startX * cellWidth;
final int tileTop = imageTile.startY * cellHeight;
view.layout(
tileLeft + padding,
tileTop + padding,
tileLeft + view.getMeasuredWidth(),
tileTop + view.getMeasuredHeight());
if (viewWrapper.needsSlideAnimation) {
trySlideAttachmentView(viewWrapper);
viewWrapper.needsSlideAnimation = false;
} else {
viewWrapper.prevLeft = view.getLeft();
viewWrapper.prevTop = view.getTop();
viewWrapper.prevWidth = view.getWidth();
viewWrapper.prevHeight = view.getHeight();
}
if (i == count - 1 && mPlusTextView != null) {
// The plus text view always covers the last attachment.
mPlusTextView.layout(
tileLeft + padding,
tileTop + padding,
tileLeft + mPlusTextView.getMeasuredWidth(),
tileTop + mPlusTextView.getMeasuredHeight());
}
}
}
private void buildViews(
final Iterable<MessagePartData> attachments,
final ArrayList<ViewWrapper> previousViews,
final Rect transitionRect) {
final LayoutInflater layoutInflater = LayoutInflater.from(getContext());
final int count = mCurrentLayout.tiles.size();
int i = 0;
final Iterator<MessagePartData> iterator = attachments.iterator();
while (iterator.hasNext() && i < count) {
final MessagePartData attachment = iterator.next();
ViewWrapper attachmentWrapper = null;
// Try to recycle a previous view first
for (int j = 0; j < previousViews.size(); j++) {
final ViewWrapper previousView = previousViews.get(j);
if (previousView.attachment.equals(attachment)
&& !(previousView.attachment instanceof PendingAttachmentData)) {
attachmentWrapper = previousView;
previousViews.remove(j);
break;
}
}
if (attachmentWrapper == null) {
final View view =
AttachmentPreviewFactory.createAttachmentPreview(
layoutInflater,
attachment,
this,
AttachmentPreviewFactory.TYPE_MULTIPLE,
false /* startImageRequest */,
mAttachmentClickListener);
if (view == null) {
// createAttachmentPreview can return null if something goes wrong (e.g.
// attachment has unsupported contentType)
continue;
}
if (view instanceof AsyncImageView && mImageViewDelayLoader != null) {
AsyncImageView asyncImageView = (AsyncImageView) view;
asyncImageView.setDelayLoader(mImageViewDelayLoader);
}
addView(view);
attachmentWrapper = new ViewWrapper(view, attachment);
// Help animate from single to multi by copying over the prev location
if (count == 2 && i == 1 && transitionRect != null) {
attachmentWrapper.prevLeft = transitionRect.left;
attachmentWrapper.prevTop = transitionRect.top;
attachmentWrapper.prevWidth = transitionRect.width();
attachmentWrapper.prevHeight = transitionRect.height();
}
}
i++;
Assert.notNull(attachmentWrapper);
mPreviewViews.add(attachmentWrapper);
// The first view will animate in using PopupTransitionAnimation, but the remaining
// views will slide from their previous position to their new position within the
// layout
if (i == 0) {
AttachmentPreview.tryAnimateViewIn(attachment, attachmentWrapper.view);
}
attachmentWrapper.needsSlideAnimation = i > 0;
}
// Build the plus text view (e.g. "+2") for when there are more attachments than what
// this layout can display.
if (mPlusNumber > 0) {
mPlusTextView =
(TextView) layoutInflater.inflate(R.layout.attachment_more_text_view, null /* parent */);
mPlusTextView.setText(getResources().getString(R.string.attachment_more_items, mPlusNumber));
addView(mPlusTextView);
}
}
