mirror of
https://github.com/NiciDieNase/chaosflix
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implement own EventDetailsDescriptionPresenter
This commit is contained in:
Felix
parent
f9cea0e222
commit
5d14fef7cd
1 changed files with 205 additions and 2 deletions
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@ -1,7 +1,14 @@
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package de.nicidienase.chaosflix;
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import android.graphics.Paint;
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import android.support.v17.leanback.widget.AbstractDetailsDescriptionPresenter;
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import android.support.v17.leanback.widget.Presenter;
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import android.text.TextUtils;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.ViewGroup;
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import android.view.ViewTreeObserver;
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import android.widget.TextView;
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import de.nicidienase.chaosflix.entities.Event;
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@ -9,12 +16,14 @@ import de.nicidienase.chaosflix.entities.Event;
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* Created by felix on 18.03.17.
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*/
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public class EventDetailsDescriptionPresenter extends AbstractDetailsDescriptionPresenter {
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@Override
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public class EventDetailsDescriptionPresenter extends Presenter {
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protected void onBindDescription(ViewHolder vh, Object item) {
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Event event = (Event) item;
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vh.getTitle().setMaxLines(3);
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vh.getTitle().setText(event.getTitle());
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vh.getSubtitle().setMaxLines(3);
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vh.getSubtitle().setText(event.getSubtitle());
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StringBuilder sb = new StringBuilder();
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String speaker = TextUtils.join(", ", event.getPersons());
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@ -28,6 +37,200 @@ public class EventDetailsDescriptionPresenter extends AbstractDetailsDescription
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.append(event.getUpdatedAt())
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.append("\nTags: ")
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.append(event.getTags());
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vh.getBody().setEllipsize(null);
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vh.getBody().setMaxLines(30);
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vh.getBody().setText(sb.toString());
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}
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public static class ViewHolder extends Presenter.ViewHolder {
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public TextView mTitle;
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public TextView mSubtitle;
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public TextView mBody;
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public int mTitleMargin;
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public int mUnderTitleBaselineMargin;
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public int mUnderSubtitleBaselineMargin;
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public int mTitleLineSpacing;
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public int mBodyLineSpacing;
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public int mBodyMaxLines;
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public int mBodyMinLines;
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public Paint.FontMetricsInt mTitleFontMetricsInt;
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public Paint.FontMetricsInt mSubtitleFontMetricsInt;
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public Paint.FontMetricsInt mBodyFontMetricsInt;
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public int mTitleMaxLines;
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private ViewTreeObserver.OnPreDrawListener mPreDrawListener;
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public ViewHolder(final View view) {
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super(view);
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mTitle = (TextView) view.findViewById(android.support.v17.leanback.R.id.lb_details_description_title);
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mSubtitle = (TextView) view.findViewById(android.support.v17.leanback.R.id.lb_details_description_subtitle);
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mBody = (TextView) view.findViewById(android.support.v17.leanback.R.id.lb_details_description_body);
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Paint.FontMetricsInt titleFontMetricsInt = getFontMetricsInt(mTitle);
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final int titleAscent = view.getResources().getDimensionPixelSize(
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android.support.v17.leanback.R.dimen.lb_details_description_title_baseline);
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// Ascent is negative
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mTitleMargin = titleAscent + titleFontMetricsInt.ascent;
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mUnderTitleBaselineMargin = view.getResources().getDimensionPixelSize(
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android.support.v17.leanback.R.dimen.lb_details_description_under_title_baseline_margin);
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mUnderSubtitleBaselineMargin = view.getResources().getDimensionPixelSize(
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android.support.v17.leanback.R.dimen.lb_details_description_under_subtitle_baseline_margin);
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mTitleLineSpacing = view.getResources().getDimensionPixelSize(
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android.support.v17.leanback.R.dimen.lb_details_description_title_line_spacing);
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mBodyLineSpacing = view.getResources().getDimensionPixelSize(
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android.support.v17.leanback.R.dimen.lb_details_description_body_line_spacing);
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mBodyMaxLines = 15;
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mBodyMinLines = view.getResources().getInteger(
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android.support.v17.leanback.R.integer.lb_details_description_body_min_lines);
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mTitleMaxLines = mTitle.getMaxLines();
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mTitleFontMetricsInt = getFontMetricsInt(mTitle);
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mSubtitleFontMetricsInt = getFontMetricsInt(mSubtitle);
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mBodyFontMetricsInt = getFontMetricsInt(mBody);
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mTitle.addOnLayoutChangeListener(new View.OnLayoutChangeListener() {
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@Override
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public void onLayoutChange(View v, int left, int top, int right, int bottom,
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int oldLeft, int oldTop, int oldRight, int oldBottom) {
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addPreDrawListener();
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}
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});
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}
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void addPreDrawListener() {
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if (mPreDrawListener != null) {
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return;
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}
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mPreDrawListener = new ViewTreeObserver.OnPreDrawListener() {
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@Override
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public boolean onPreDraw() {
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if (mSubtitle.getVisibility() == View.VISIBLE
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&& mSubtitle.getTop() > view.getHeight()
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&& mTitle.getLineCount() > 1) {
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mTitle.setMaxLines(mTitle.getLineCount() - 1);
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return false;
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}
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final int titleLines = mTitle.getLineCount();
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final int maxLines = titleLines > 1 ? mBodyMinLines : mBodyMaxLines;
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if (mBody.getMaxLines() != maxLines) {
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mBody.setMaxLines(maxLines);
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return false;
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} else {
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removePreDrawListener();
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return true;
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}
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}
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};
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view.getViewTreeObserver().addOnPreDrawListener(mPreDrawListener);
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}
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void removePreDrawListener() {
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if (mPreDrawListener != null) {
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view.getViewTreeObserver().removeOnPreDrawListener(mPreDrawListener);
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mPreDrawListener = null;
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}
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}
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public TextView getTitle() {
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return mTitle;
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}
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public TextView getSubtitle() {
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return mSubtitle;
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}
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public TextView getBody() {
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return mBody;
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}
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private Paint.FontMetricsInt getFontMetricsInt(TextView textView) {
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Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
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paint.setTextSize(textView.getTextSize());
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paint.setTypeface(textView.getTypeface());
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return paint.getFontMetricsInt();
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}
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}
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@Override
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public final AbstractDetailsDescriptionPresenter.ViewHolder onCreateViewHolder(ViewGroup parent) {
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View v = LayoutInflater.from(parent.getContext())
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.inflate(android.support.v17.leanback.R.layout.lb_details_description, parent, false);
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return new AbstractDetailsDescriptionPresenter.ViewHolder(v);
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}
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@Override
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public void onBindViewHolder(Presenter.ViewHolder viewHolder, Object item) {
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ViewHolder vh = (ViewHolder) viewHolder;
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onBindDescription(vh, item);
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boolean hasTitle = true;
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if (TextUtils.isEmpty(vh.mTitle.getText())) {
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vh.mTitle.setVisibility(View.GONE);
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hasTitle = false;
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} else {
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vh.mTitle.setVisibility(View.VISIBLE);
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vh.mTitle.setLineSpacing(vh.mTitleLineSpacing - vh.mTitle.getLineHeight()
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+ vh.mTitle.getLineSpacingExtra(), vh.mTitle.getLineSpacingMultiplier());
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vh.mTitle.setMaxLines(vh.mTitleMaxLines);
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}
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setTopMargin(vh.mTitle, vh.mTitleMargin);
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boolean hasSubtitle = true;
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if (TextUtils.isEmpty(vh.mSubtitle.getText())) {
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vh.mSubtitle.setVisibility(View.GONE);
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hasSubtitle = false;
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} else {
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vh.mSubtitle.setVisibility(View.VISIBLE);
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if (hasTitle) {
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setTopMargin(vh.mSubtitle, vh.mUnderTitleBaselineMargin
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+ vh.mSubtitleFontMetricsInt.ascent - vh.mTitleFontMetricsInt.descent);
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} else {
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setTopMargin(vh.mSubtitle, 0);
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}
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}
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if (TextUtils.isEmpty(vh.mBody.getText())) {
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vh.mBody.setVisibility(View.GONE);
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} else {
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vh.mBody.setVisibility(View.VISIBLE);
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vh.mBody.setLineSpacing(vh.mBodyLineSpacing - vh.mBody.getLineHeight()
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+ vh.mBody.getLineSpacingExtra(), vh.mBody.getLineSpacingMultiplier());
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if (hasSubtitle) {
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setTopMargin(vh.mBody, vh.mUnderSubtitleBaselineMargin
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+ vh.mBodyFontMetricsInt.ascent - vh.mSubtitleFontMetricsInt.descent);
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} else if (hasTitle) {
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setTopMargin(vh.mBody, vh.mUnderTitleBaselineMargin
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+ vh.mBodyFontMetricsInt.ascent - vh.mTitleFontMetricsInt.descent);
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} else {
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setTopMargin(vh.mBody, 0);
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}
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}
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}
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@Override
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public void onUnbindViewHolder(Presenter.ViewHolder viewHolder) {}
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public void onViewAttachedToWindow(EventDetailsDescriptionPresenter.ViewHolder holder) {
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// In case predraw listener was removed in detach, make sure
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// we have the proper layout.
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ViewHolder vh = (EventDetailsDescriptionPresenter.ViewHolder) holder;
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vh.addPreDrawListener();
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super.onViewAttachedToWindow(holder);
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}
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@Override
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public void onViewDetachedFromWindow(Presenter.ViewHolder holder) {
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ViewHolder vh = (EventDetailsDescriptionPresenter.ViewHolder) holder;
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vh.removePreDrawListener();
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super.onViewDetachedFromWindow(holder);
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}
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private void setTopMargin(TextView textView, int topMargin) {
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ViewGroup.MarginLayoutParams lp = (ViewGroup.MarginLayoutParams) textView.getLayoutParams();
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lp.topMargin = topMargin;
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textView.setLayoutParams(lp);
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}
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}
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