diff --git a/app/src/main/java/org/schabi/newpipe/fragments/detail/VideoDetailFragment.java b/app/src/main/java/org/schabi/newpipe/fragments/detail/VideoDetailFragment.java index fd2a3285d..c698d4ad4 100644 --- a/app/src/main/java/org/schabi/newpipe/fragments/detail/VideoDetailFragment.java +++ b/app/src/main/java/org/schabi/newpipe/fragments/detail/VideoDetailFragment.java @@ -87,6 +87,7 @@ import org.schabi.newpipe.util.ShareUtils; import org.schabi.newpipe.util.StreamItemAdapter; import org.schabi.newpipe.util.StreamItemAdapter.StreamSizeWrapper; import org.schabi.newpipe.views.AnimatedProgressBar; +import org.schabi.newpipe.views.LargeTextMovementMethod; import java.io.Serializable; import java.util.Collection; @@ -441,10 +442,13 @@ public class VideoDetailFragment if (videoDescriptionRootLayout.getVisibility() == View.VISIBLE) { videoTitleTextView.setMaxLines(1); videoDescriptionRootLayout.setVisibility(View.GONE); + videoDescriptionView.setFocusable(false); videoTitleToggleArrow.setImageResource(R.drawable.arrow_down); } else { videoTitleTextView.setMaxLines(10); videoDescriptionRootLayout.setVisibility(View.VISIBLE); + videoDescriptionView.setFocusable(true); + videoDescriptionView.setMovementMethod(new LargeTextMovementMethod()); videoTitleToggleArrow.setImageResource(R.drawable.arrow_up); } } @@ -481,7 +485,6 @@ public class VideoDetailFragment videoDescriptionRootLayout = rootView.findViewById(R.id.detail_description_root_layout); videoUploadDateView = rootView.findViewById(R.id.detail_upload_date_view); videoDescriptionView = rootView.findViewById(R.id.detail_description_view); - videoDescriptionView.setMovementMethod(LinkMovementMethod.getInstance()); videoDescriptionView.setAutoLinkMask(Linkify.WEB_URLS); thumbsUpTextView = rootView.findViewById(R.id.detail_thumbs_up_count_view); diff --git a/app/src/main/java/org/schabi/newpipe/views/LargeTextMovementMethod.java b/app/src/main/java/org/schabi/newpipe/views/LargeTextMovementMethod.java new file mode 100644 index 000000000..1f9ab5e2d --- /dev/null +++ b/app/src/main/java/org/schabi/newpipe/views/LargeTextMovementMethod.java @@ -0,0 +1,290 @@ +/* + * Copyright 2019 Alexander Rvachev + * FocusOverlayView.java is part of NewPipe + * + * License: GPL-3.0+ + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ +package org.schabi.newpipe.views; + +import android.graphics.Rect; +import android.text.Layout; +import android.text.Selection; +import android.text.Spannable; +import android.text.method.LinkMovementMethod; +import android.text.style.ClickableSpan; +import android.view.KeyEvent; +import android.view.View; +import android.view.ViewGroup; +import android.view.ViewParent; +import android.widget.TextView; + +public class LargeTextMovementMethod extends LinkMovementMethod { + private final Rect visibleRect = new Rect(); + + private int dir; + + @Override + public void onTakeFocus(TextView view, Spannable text, int dir) { + Selection.removeSelection(text); + + super.onTakeFocus(view, text, dir); + + this.dir = dirToRelative(dir); + } + + @Override + protected boolean handleMovementKey(TextView widget, Spannable buffer, int keyCode, int movementMetaState, KeyEvent event) { + if (!doHandleMovement(widget, buffer, keyCode, movementMetaState, event)) { + // clear selection to make sure, that it does not confuse focus handling code + Selection.removeSelection(buffer); + return false; + } + + return true; + } + + private boolean doHandleMovement(TextView widget, Spannable buffer, int keyCode, int movementMetaState, KeyEvent event) { + int newDir = keyToDir(keyCode); + + if (dir != 0 && newDir != dir) { + return false; + } + + this.dir = 0; + + ViewGroup root = findScrollableParent(widget); + + widget.getHitRect(visibleRect); + + root.offsetDescendantRectToMyCoords((View) widget.getParent(), visibleRect); + + return super.handleMovementKey(widget, buffer, keyCode, movementMetaState, event); + } + + @Override + protected boolean up(TextView widget, Spannable buffer) { + if (gotoPrev(widget, buffer)) { + return true; + } + + return super.up(widget, buffer); + } + + @Override + protected boolean left(TextView widget, Spannable buffer) { + if (gotoPrev(widget, buffer)) { + return true; + } + + return super.left(widget, buffer); + } + + @Override + protected boolean right(TextView widget, Spannable buffer) { + if (gotoNext(widget, buffer)) { + return true; + } + + return super.right(widget, buffer); + } + + @Override + protected boolean down(TextView widget, Spannable buffer) { + if (gotoNext(widget, buffer)) { + return true; + } + + return super.down(widget, buffer); + } + + private boolean gotoPrev(TextView view, Spannable buffer) { + Layout layout = view.getLayout(); + if (layout == null) { + return false; + } + + View root = findScrollableParent(view); + + int rootHeight = root.getHeight(); + + if (visibleRect.top >= 0) { + // we fit entirely into the viewport, no need for fancy footwork + return false; + } + + int topExtra = -visibleRect.top; + + int firstVisibleLineNumber = layout.getLineForVertical(topExtra); + + // when deciding whether to pass "focus" to span, account for one more line + // this ensures, that focus is never passed to spans partially outside scroll window + int visibleStart = firstVisibleLineNumber == 0 ? 0 : layout.getLineStart(firstVisibleLineNumber - 1); + + ClickableSpan[] candidates = buffer.getSpans(visibleStart, buffer.length(), ClickableSpan.class); + + if (candidates.length != 0) { + int a = Selection.getSelectionStart(buffer); + int b = Selection.getSelectionEnd(buffer); + + int selStart = Math.min(a, b); + int selEnd = Math.max(a, b); + + int bestStart = -1; + int bestEnd = -1; + + for (int i = 0; i < candidates.length; i++) { + int start = buffer.getSpanStart(candidates[i]); + int end = buffer.getSpanEnd(candidates[i]); + + if ((end < selEnd || selStart == selEnd) && start >= visibleStart) { + if (end > bestEnd) { + bestStart = buffer.getSpanStart(candidates[i]); + bestEnd = end; + } + } + } + + if (bestStart >= 0) { + Selection.setSelection(buffer, bestEnd, bestStart); + return true; + } + } + + float fourLines = view.getTextSize() * 4; + + visibleRect.left = 0; + visibleRect.right = view.getWidth(); + visibleRect.top = Math.max(0, (int) (topExtra - fourLines)); + visibleRect.bottom = visibleRect.top + rootHeight; + + return view.requestRectangleOnScreen(visibleRect); + } + + private boolean gotoNext(TextView view, Spannable buffer) { + Layout layout = view.getLayout(); + if (layout == null) { + return false; + } + + View root = findScrollableParent(view); + + int rootHeight = root.getHeight(); + + if (visibleRect.bottom <= rootHeight) { + // we fit entirely into the viewport, no need for fancy footwork + return false; + } + + int bottomExtra = visibleRect.bottom - rootHeight; + + int visibleBottomBorder = view.getHeight() - bottomExtra; + + int lineCount = layout.getLineCount(); + + int lastVisibleLineNumber = layout.getLineForVertical(visibleBottomBorder); + + // when deciding whether to pass "focus" to span, account for one more line + // this ensures, that focus is never passed to spans partially outside scroll window + int visibleEnd = lastVisibleLineNumber == lineCount - 1 ? buffer.length() : layout.getLineEnd(lastVisibleLineNumber - 1); + + ClickableSpan[] candidates = buffer.getSpans(0, visibleEnd, ClickableSpan.class); + + if (candidates.length != 0) { + int a = Selection.getSelectionStart(buffer); + int b = Selection.getSelectionEnd(buffer); + + int selStart = Math.min(a, b); + int selEnd = Math.max(a, b); + + int bestStart = Integer.MAX_VALUE; + int bestEnd = Integer.MAX_VALUE; + + for (int i = 0; i < candidates.length; i++) { + int start = buffer.getSpanStart(candidates[i]); + int end = buffer.getSpanEnd(candidates[i]); + + if ((start > selStart || selStart == selEnd) && end <= visibleEnd) { + if (start < bestStart) { + bestStart = start; + bestEnd = buffer.getSpanEnd(candidates[i]); + } + } + } + + if (bestEnd < Integer.MAX_VALUE) { + // cool, we have managed to find next link without having to adjust self within view + Selection.setSelection(buffer, bestStart, bestEnd); + return true; + } + } + + // there are no links within visible area, but still some text past visible area + // scroll visible area further in required direction + float fourLines = view.getTextSize() * 4; + + visibleRect.left = 0; + visibleRect.right = view.getWidth(); + visibleRect.bottom = Math.min((int) (visibleBottomBorder + fourLines), view.getHeight()); + visibleRect.top = visibleRect.bottom - rootHeight; + + return view.requestRectangleOnScreen(visibleRect); + } + + private ViewGroup findScrollableParent(View view) { + View current = view; + + ViewParent parent; + do { + parent = current.getParent(); + + if (parent == current || !(parent instanceof View)) { + return (ViewGroup) view.getRootView(); + } + + current = (View) parent; + + if (current.isScrollContainer()) { + return (ViewGroup) current; + } + } + while (true); + } + + private int dirToRelative(int dir) { + switch (dir) { + case View.FOCUS_DOWN: + case View.FOCUS_RIGHT: + return View.FOCUS_FORWARD; + case View.FOCUS_UP: + case View.FOCUS_LEFT: + return View.FOCUS_BACKWARD; + } + + return dir; + } + + private int keyToDir(int keyCode) { + switch (keyCode) { + case KeyEvent.KEYCODE_DPAD_UP: + case KeyEvent.KEYCODE_DPAD_LEFT: + return View.FOCUS_BACKWARD; + case KeyEvent.KEYCODE_DPAD_DOWN: + case KeyEvent.KEYCODE_DPAD_RIGHT: + return View.FOCUS_FORWARD; + } + + return View.FOCUS_FORWARD; + } +} diff --git a/app/src/main/res/layout-large-land/fragment_video_detail.xml b/app/src/main/res/layout-large-land/fragment_video_detail.xml index 02d330ade..6d54525db 100644 --- a/app/src/main/res/layout-large-land/fragment_video_detail.xml +++ b/app/src/main/res/layout-large-land/fragment_video_detail.xml @@ -15,6 +15,7 @@ android:layout_width="0dp" android:layout_height="match_parent" android:layout_weight="5" + android:isScrollContainer="true" android:fitsSystemWindows="true">