mirror of https://github.com/FongMi/TV.git
FongMi
3 years ago
parent
e0b0a66720
commit
4ca431cf62
@ -0,0 +1,199 @@ |
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package com.fongmi.android.tv.ui.custom; |
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import android.text.Editable; |
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import android.text.Layout; |
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import android.text.NoCopySpan; |
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import android.text.Selection; |
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import android.text.Spannable; |
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import android.text.method.ScrollingMovementMethod; |
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import android.text.style.ClickableSpan; |
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import android.view.KeyEvent; |
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import android.view.MotionEvent; |
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import android.view.View; |
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import android.widget.TextView; |
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public class CustomMovement extends ScrollingMovementMethod { |
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private static final int CLICK = 1; |
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private static final int UP = 2; |
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private static final int DOWN = 3; |
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private static final Object FROM_BELOW = new NoCopySpan.Concrete(); |
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private static CustomMovement sInstance; |
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public static CustomMovement getInstance() { |
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if (sInstance == null) sInstance = new CustomMovement(); |
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return sInstance; |
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} |
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public static void bind(TextView view) { |
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Editable e = new Editable.Factory().newEditable(view.getText()); |
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ClickableSpan[] spans = e.getSpans(0, e.length(), ClickableSpan.class); |
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view.setMovementMethod(spans.length > 0 ? CustomMovement.getInstance() : null); |
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} |
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@Override |
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public boolean canSelectArbitrarily() { |
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return true; |
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} |
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@Override |
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protected boolean handleMovementKey(TextView widget, Spannable buffer, int keyCode, int movementMetaState, KeyEvent event) { |
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switch (keyCode) { |
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case KeyEvent.KEYCODE_DPAD_CENTER: |
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case KeyEvent.KEYCODE_ENTER: |
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if (KeyEvent.metaStateHasNoModifiers(movementMetaState)) { |
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if (event.getAction() == KeyEvent.ACTION_DOWN && event.getRepeatCount() == 0 && action(CLICK, widget, buffer)) { |
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return true; |
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} |
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} |
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break; |
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} |
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return super.handleMovementKey(widget, buffer, keyCode, movementMetaState, event); |
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} |
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private void findFocus(TextView widget, int direction) { |
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View view = widget.focusSearch(direction); |
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if (view != null) view.requestFocus(); |
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} |
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@Override |
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protected boolean up(TextView widget, Spannable buffer) { |
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if (action(UP, widget, buffer)) return true; |
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findFocus(widget, View.FOCUS_UP); |
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return super.up(widget, buffer); |
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} |
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@Override |
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protected boolean down(TextView widget, Spannable buffer) { |
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if (action(DOWN, widget, buffer)) return true; |
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findFocus(widget, View.FOCUS_DOWN); |
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return super.down(widget, buffer); |
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} |
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@Override |
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protected boolean left(TextView widget, Spannable buffer) { |
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if (action(UP, widget, buffer)) return true; |
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findFocus(widget, View.FOCUS_LEFT); |
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return super.left(widget, buffer); |
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} |
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@Override |
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protected boolean right(TextView widget, Spannable buffer) { |
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if (action(DOWN, widget, buffer)) return true; |
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findFocus(widget, View.FOCUS_RIGHT); |
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return super.right(widget, buffer); |
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} |
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private boolean action(int what, TextView widget, Spannable buffer) { |
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Layout layout = widget.getLayout(); |
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int padding = widget.getTotalPaddingTop() + widget.getTotalPaddingBottom(); |
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int areaTop = widget.getScrollY(); |
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int areaBot = areaTop + widget.getHeight() - padding; |
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int lineTop = layout.getLineForVertical(areaTop); |
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int lineBot = layout.getLineForVertical(areaBot); |
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int first = layout.getLineStart(lineTop); |
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int last = layout.getLineEnd(lineBot); |
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ClickableSpan[] candidates = buffer.getSpans(first, last, ClickableSpan.class); |
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int a = Selection.getSelectionStart(buffer); |
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int b = Selection.getSelectionEnd(buffer); |
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int selStart = Math.min(a, b); |
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int selEnd = Math.max(a, b); |
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if (selStart < 0) { |
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if (buffer.getSpanStart(FROM_BELOW) >= 0) { |
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selStart = selEnd = buffer.length(); |
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} |
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} |
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if (selStart > last) selStart = selEnd = Integer.MAX_VALUE; |
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if (selEnd < first) selStart = selEnd = -1; |
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switch (what) { |
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case CLICK: |
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if (selStart == selEnd) return false; |
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ClickableSpan[] links = buffer.getSpans(selStart, selEnd, ClickableSpan.class); |
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if (links.length != 1) return false; |
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ClickableSpan link = links[0]; |
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link.onClick(widget); |
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break; |
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case UP: |
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int bestStart, bestEnd; |
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bestStart = -1; |
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bestEnd = -1; |
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for (ClickableSpan candidate : candidates) { |
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int end = buffer.getSpanEnd(candidate); |
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if (end < selEnd || selStart == selEnd) { |
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if (end > bestEnd) { |
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bestStart = buffer.getSpanStart(candidate); |
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bestEnd = end; |
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} |
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} |
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} |
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if (bestStart >= 0) { |
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Selection.setSelection(buffer, bestEnd, bestStart); |
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return true; |
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} |
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break; |
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case DOWN: |
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bestStart = Integer.MAX_VALUE; |
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bestEnd = Integer.MAX_VALUE; |
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for (ClickableSpan candidate : candidates) { |
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int start = buffer.getSpanStart(candidate); |
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if (start > selStart || selStart == selEnd) { |
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if (start < bestStart) { |
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bestStart = start; |
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bestEnd = buffer.getSpanEnd(candidate); |
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} |
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} |
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} |
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if (bestEnd < Integer.MAX_VALUE) { |
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Selection.setSelection(buffer, bestStart, bestEnd); |
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return true; |
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} |
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break; |
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} |
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return false; |
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} |
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@Override |
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public boolean onTouchEvent(TextView widget, Spannable buffer, MotionEvent event) { |
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int action = event.getAction(); |
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if (action == MotionEvent.ACTION_UP || action == MotionEvent.ACTION_DOWN) { |
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int x = (int) event.getX(); |
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int y = (int) event.getY(); |
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x -= widget.getTotalPaddingLeft(); |
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y -= widget.getTotalPaddingTop(); |
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x += widget.getScrollX(); |
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y += widget.getScrollY(); |
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Layout layout = widget.getLayout(); |
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int line = layout.getLineForVertical(y); |
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int off = layout.getOffsetForHorizontal(line, x); |
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ClickableSpan[] links = buffer.getSpans(off, off, ClickableSpan.class); |
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if (links.length != 0) { |
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ClickableSpan link = links[0]; |
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if (action == MotionEvent.ACTION_UP) { |
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link.onClick(widget); |
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} else { |
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Selection.setSelection(buffer, buffer.getSpanStart(link), buffer.getSpanEnd(link)); |
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} |
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return true; |
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} else { |
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Selection.removeSelection(buffer); |
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} |
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} |
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return super.onTouchEvent(widget, buffer, event); |
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} |
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@Override |
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public void initialize(TextView widget, Spannable text) { |
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Selection.removeSelection(text); |
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text.removeSpan(FROM_BELOW); |
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} |
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@Override |
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public void onTakeFocus(TextView view, Spannable text, int dir) { |
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Selection.removeSelection(text); |
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if ((dir & View.FOCUS_BACKWARD) != 0) { |
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text.setSpan(FROM_BELOW, 0, 0, Spannable.SPAN_POINT_POINT); |
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} else { |
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text.removeSpan(FROM_BELOW); |
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} |
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} |
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} |
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