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add pager title transition

This commit is contained in:
sk 2023-01-13 05:46:43 +01:00
parent 6c615a4893
commit 6bea10bdac
1 changed files with 14 additions and 1 deletions
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15
mastodon/src/main/java/org/joinmastodon/android/fragments/HomeTabFragment.java
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@ -74,6 +74,7 @@ public class HomeTabFragment extends MastodonToolbarFragment implements Scrollab
private ViewPager2 pager; private ViewPager2 pager;
private final List<Fragment> fragments = new ArrayList<>(); private final List<Fragment> fragments = new ArrayList<>();
private final List<FrameLayout> tabViews = new ArrayList<>(); private final List<FrameLayout> tabViews = new ArrayList<>();
private View switcher;
private FrameLayout toolbarFrame; private FrameLayout toolbarFrame;
private ImageView timelineIcon; private ImageView timelineIcon;
private ImageView collapsedChevron; private ImageView collapsedChevron;
@ -136,7 +137,7 @@ public class HomeTabFragment extends MastodonToolbarFragment implements Scrollab
timelineIcon = toolbarFrame.findViewById(R.id.timeline_icon); timelineIcon = toolbarFrame.findViewById(R.id.timeline_icon);
timelineTitle = toolbarFrame.findViewById(R.id.timeline_title); timelineTitle = toolbarFrame.findViewById(R.id.timeline_title);
collapsedChevron = toolbarFrame.findViewById(R.id.collapsed_chevron); collapsedChevron = toolbarFrame.findViewById(R.id.collapsed_chevron);
View switcher = toolbarFrame.findViewById(R.id.switcher_btn); switcher = toolbarFrame.findViewById(R.id.switcher_btn);
switcherPopup = new PopupMenu(getContext(), switcher); switcherPopup = new PopupMenu(getContext(), switcher);
switcherPopup.inflate(R.menu.home_switcher); switcherPopup.inflate(R.menu.home_switcher);
switcherPopup.setOnMenuItemClickListener(this::onSwitcherItemSelected); switcherPopup.setOnMenuItemClickListener(this::onSwitcherItemSelected);
@ -166,6 +167,16 @@ public class HomeTabFragment extends MastodonToolbarFragment implements Scrollab
} }
}); });
if (!GlobalUserPreferences.reduceMotion) {
pager.setPageTransformer((v, pos) -> {
if (tabViews.get(pager.getCurrentItem()) != v) return;
float scaleFactor = Math.max(0.85f, 1 - Math.abs(pos) * 0.06f);
switcher.setScaleY(scaleFactor);
switcher.setScaleX(scaleFactor);
switcher.setAlpha(Math.max(0.65f, 1 - Math.abs(pos)));
});
}
updateToolbarLogo(); updateToolbarLogo();
if(GithubSelfUpdater.needSelfUpdating()){ if(GithubSelfUpdater.needSelfUpdating()){
@ -225,6 +236,8 @@ public class HomeTabFragment extends MastodonToolbarFragment implements Scrollab
// centering button by applying the same space on the left // centering button by applying the same space on the left
int padding = toolbar.getWidth() - toolbarFrame.getWidth(); int padding = toolbar.getWidth() - toolbarFrame.getWidth();
((FrameLayout) toolbarShowNewPostsBtn.getParent()).setPadding(padding, 0, 0, 0); ((FrameLayout) toolbarShowNewPostsBtn.getParent()).setPadding(padding, 0, 0, 0);
switcher.setPivotX(V.dp(28)); // padding + half of icon
switcher.setPivotY(switcher.getHeight() / 2f);
}); });
if(newPostsBtnShown){ if(newPostsBtnShown){