mirror of https://github.com/NekoX-Dev/NekoX.git
467 lines
16 KiB
Java
467 lines
16 KiB
Java
/*
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* This is the source code of Telegram for Android v. 5.x.x.
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* It is licensed under GNU GPL v. 2 or later.
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* You should have received a copy of the license in this archive (see LICENSE).
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*
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* Copyright Nikolai Kudashov, 2013-2018.
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*/
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package org.telegram.ui.ActionBar;
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import android.content.Context;
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import android.graphics.Canvas;
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import android.graphics.Paint;
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import android.graphics.PorterDuff;
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import android.graphics.PorterDuffColorFilter;
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import android.graphics.Typeface;
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import android.graphics.drawable.Drawable;
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import android.graphics.drawable.GradientDrawable;
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import android.os.SystemClock;
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import android.text.Layout;
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import android.text.SpannableStringBuilder;
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import android.text.StaticLayout;
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import android.text.TextPaint;
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import android.text.TextUtils;
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import android.view.Gravity;
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import android.view.View;
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import org.telegram.messenger.AndroidUtilities;
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public class SimpleTextView extends View implements Drawable.Callback {
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private Layout layout;
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private TextPaint textPaint;
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private int gravity = Gravity.LEFT | Gravity.TOP;
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private CharSequence text;
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private SpannableStringBuilder spannableStringBuilder;
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private Drawable leftDrawable;
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private Drawable rightDrawable;
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private int drawablePadding = AndroidUtilities.dp(4);
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private int leftDrawableTopPadding;
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private int rightDrawableTopPadding;
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private boolean scrollNonFitText;
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private boolean textDoesNotFit;
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private float scrollingOffset;
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private long lastUpdateTime;
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private int currentScrollDelay;
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private GradientDrawable fadeDrawable;
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private GradientDrawable fadeDrawableBack;
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private int lastWidth;
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private int offsetX;
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private int offsetY;
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private int textWidth;
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private int totalWidth;
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private int textHeight;
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private boolean wasLayout;
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private static final int PIXELS_PER_SECOND = 50;
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private static final int PIXELS_PER_SECOND_SLOW = 30;
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private static final int DIST_BETWEEN_SCROLLING_TEXT = 16;
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private static final int SCROLL_DELAY_MS = 500;
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private static final int SCROLL_SLOWDOWN_PX = 100;
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public SimpleTextView(Context context) {
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super(context);
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textPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
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}
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public void setTextColor(int color) {
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textPaint.setColor(color);
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invalidate();
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}
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public void setLinkTextColor(int color) {
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textPaint.linkColor = color;
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invalidate();
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}
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@Override
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protected void onDetachedFromWindow() {
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super.onDetachedFromWindow();
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wasLayout = false;
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}
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public void setTextSize(int size) {
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int newSize = AndroidUtilities.dp(size);
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if (newSize == textPaint.getTextSize()) {
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return;
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}
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textPaint.setTextSize(newSize);
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if (!recreateLayoutMaybe()) {
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invalidate();
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}
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}
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public void setScrollNonFitText(boolean value) {
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if (scrollNonFitText == value) {
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return;
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}
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scrollNonFitText = value;
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if (scrollNonFitText) {
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fadeDrawable = new GradientDrawable(GradientDrawable.Orientation.LEFT_RIGHT, new int[]{0xffffffff, 0});
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fadeDrawableBack = new GradientDrawable(GradientDrawable.Orientation.LEFT_RIGHT, new int[]{0, 0xffffffff});
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}
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requestLayout();
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}
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public void setGravity(int value) {
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gravity = value;
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}
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public void setTypeface(Typeface typeface) {
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textPaint.setTypeface(typeface);
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}
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public int getSideDrawablesSize() {
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int size = 0;
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if (leftDrawable != null) {
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size += leftDrawable.getIntrinsicWidth() + drawablePadding;
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}
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if (rightDrawable != null) {
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size += rightDrawable.getIntrinsicWidth() + drawablePadding;
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}
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return size;
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}
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public Paint getPaint() {
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return textPaint;
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}
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private void calcOffset(int width) {
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if (layout.getLineCount() > 0) {
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textWidth = (int) Math.ceil(layout.getLineWidth(0));
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textHeight = layout.getLineBottom(0);
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if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.CENTER_VERTICAL) {
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offsetY = (getMeasuredHeight() - textHeight) / 2;
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} else {
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offsetY = 0;
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}
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if ((gravity & Gravity.HORIZONTAL_GRAVITY_MASK) == Gravity.LEFT) {
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offsetX = -(int) layout.getLineLeft(0);
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} else if (layout.getLineLeft(0) == 0) {
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offsetX = width - textWidth;
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} else {
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offsetX = -AndroidUtilities.dp(8);
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}
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offsetX += getPaddingLeft();
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textDoesNotFit = textWidth > width;
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}
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}
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private boolean createLayout(int width) {
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if (text != null) {
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try {
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if (leftDrawable != null) {
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width -= leftDrawable.getIntrinsicWidth();
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width -= drawablePadding;
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}
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if (rightDrawable != null) {
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width -= rightDrawable.getIntrinsicWidth();
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width -= drawablePadding;
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}
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CharSequence string;
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if (scrollNonFitText) {
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string = text;
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} else {
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string = TextUtils.ellipsize(text, textPaint, width, TextUtils.TruncateAt.END);
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}
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/*if (layout != null && TextUtils.equals(layout.getText(), string)) {
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calcOffset(width);
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return false;
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}*/
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layout = new StaticLayout(string, 0, string.length(), textPaint, scrollNonFitText ? AndroidUtilities.dp(2000) : width + AndroidUtilities.dp(8), Layout.Alignment.ALIGN_NORMAL, 1.0f, 0.0f, false);
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calcOffset(width);
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} catch (Exception ignore) {
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}
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} else {
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layout = null;
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textWidth = 0;
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textHeight = 0;
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}
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invalidate();
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return true;
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}
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@Override
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protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
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int width = MeasureSpec.getSize(widthMeasureSpec);
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int height = MeasureSpec.getSize(heightMeasureSpec);
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if (lastWidth != AndroidUtilities.displaySize.x) {
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lastWidth = AndroidUtilities.displaySize.x;
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scrollingOffset = 0;
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currentScrollDelay = SCROLL_DELAY_MS;
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}
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createLayout(width - getPaddingLeft() - getPaddingRight());
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int finalHeight;
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if (MeasureSpec.getMode(heightMeasureSpec) == MeasureSpec.EXACTLY) {
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finalHeight = height;
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} else {
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finalHeight = textHeight;
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}
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setMeasuredDimension(width, finalHeight);
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}
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@Override
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protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
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wasLayout = true;
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}
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public int getTextWidth() {
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return textWidth;
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}
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public int getTextHeight() {
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return textHeight;
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}
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public void setLeftDrawableTopPadding(int value) {
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leftDrawableTopPadding = value;
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}
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public void setRightDrawableTopPadding(int value) {
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rightDrawableTopPadding = value;
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}
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public void setLeftDrawable(int resId) {
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setLeftDrawable(resId == 0 ? null : getContext().getResources().getDrawable(resId));
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}
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public void setRightDrawable(int resId) {
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setRightDrawable(resId == 0 ? null : getContext().getResources().getDrawable(resId));
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}
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public void setLeftDrawable(Drawable drawable) {
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if (leftDrawable == drawable) {
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return;
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}
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if (leftDrawable != null) {
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leftDrawable.setCallback(null);
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}
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leftDrawable = drawable;
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if (drawable != null) {
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drawable.setCallback(this);
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}
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if (!recreateLayoutMaybe()) {
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invalidate();
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}
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}
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public void setRightDrawable(Drawable drawable) {
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if (rightDrawable == drawable) {
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return;
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}
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if (rightDrawable != null) {
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rightDrawable.setCallback(null);
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}
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rightDrawable = drawable;
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if (drawable != null) {
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drawable.setCallback(this);
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}
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if (!recreateLayoutMaybe()) {
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invalidate();
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}
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}
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public boolean setText(CharSequence value) {
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return setText(value, false);
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}
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public boolean setText(CharSequence value, boolean force) {
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if (text == null && value == null || !force && text != null && value != null && text.equals(value)) {
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return false;
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}
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text = value;
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scrollingOffset = 0;
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currentScrollDelay = SCROLL_DELAY_MS;
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recreateLayoutMaybe();
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return true;
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}
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public void setDrawablePadding(int value) {
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if (drawablePadding == value) {
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return;
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}
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drawablePadding = value;
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if (!recreateLayoutMaybe()) {
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invalidate();
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}
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}
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private boolean recreateLayoutMaybe() {
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if (wasLayout && getMeasuredHeight() != 0) {
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return createLayout(getMeasuredWidth());
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} else {
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requestLayout();
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}
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return true;
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}
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public CharSequence getText() {
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if (text == null) {
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return "";
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}
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return text;
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}
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public int getTextStartX() {
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if (layout == null) {
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return 0;
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}
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int textOffsetX = 0;
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if (leftDrawable != null) {
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if ((gravity & Gravity.HORIZONTAL_GRAVITY_MASK) == Gravity.LEFT) {
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textOffsetX += drawablePadding + leftDrawable.getIntrinsicWidth();
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}
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}
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return (int) getX() + offsetX + textOffsetX;
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}
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public TextPaint getTextPaint() {
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return textPaint;
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}
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public int getTextStartY() {
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if (layout == null) {
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return 0;
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}
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return (int) getY();
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}
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@Override
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protected void onDraw(Canvas canvas) {
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int textOffsetX = 0;
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totalWidth = textWidth;
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if (leftDrawable != null) {
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int x = (int) -scrollingOffset;
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int y = (textHeight - leftDrawable.getIntrinsicHeight()) / 2 + leftDrawableTopPadding;
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leftDrawable.setBounds(x, y, x + leftDrawable.getIntrinsicWidth(), y + leftDrawable.getIntrinsicHeight());
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leftDrawable.draw(canvas);
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if ((gravity & Gravity.HORIZONTAL_GRAVITY_MASK) == Gravity.LEFT) {
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textOffsetX += drawablePadding + leftDrawable.getIntrinsicWidth();
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}
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totalWidth += drawablePadding + leftDrawable.getIntrinsicWidth();
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}
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if (rightDrawable != null) {
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int x = textOffsetX + textWidth + drawablePadding + (int) -scrollingOffset;
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int y = (textHeight - rightDrawable.getIntrinsicHeight()) / 2 + rightDrawableTopPadding;
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rightDrawable.setBounds(x, y, x + rightDrawable.getIntrinsicWidth(), y + rightDrawable.getIntrinsicHeight());
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rightDrawable.draw(canvas);
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totalWidth += drawablePadding + rightDrawable.getIntrinsicWidth();
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}
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int nextScrollX = totalWidth + AndroidUtilities.dp(DIST_BETWEEN_SCROLLING_TEXT);
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if (scrollingOffset != 0) {
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if (leftDrawable != null) {
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int x = (int) -scrollingOffset + nextScrollX;
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int y = (textHeight - leftDrawable.getIntrinsicHeight()) / 2 + leftDrawableTopPadding;
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leftDrawable.setBounds(x, y, x + leftDrawable.getIntrinsicWidth(), y + leftDrawable.getIntrinsicHeight());
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leftDrawable.draw(canvas);
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}
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if (rightDrawable != null) {
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int x = textOffsetX + textWidth + drawablePadding + (int) -scrollingOffset + nextScrollX;
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int y = (textHeight - rightDrawable.getIntrinsicHeight()) / 2 + rightDrawableTopPadding;
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rightDrawable.setBounds(x, y, x + rightDrawable.getIntrinsicWidth(), y + rightDrawable.getIntrinsicHeight());
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rightDrawable.draw(canvas);
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}
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}
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if (layout != null) {
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if (offsetX + textOffsetX != 0 || offsetY != 0 || scrollingOffset != 0) {
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canvas.save();
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canvas.translate(offsetX + textOffsetX - scrollingOffset, offsetY);
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if (scrollingOffset != 0) {
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//canvas.clipRect(0, 0, getMeasuredWidth(), getMeasuredHeight());
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}
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}
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layout.draw(canvas);
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if (scrollingOffset != 0) {
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canvas.translate(nextScrollX, 0);
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layout.draw(canvas);
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}
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if (offsetX + textOffsetX != 0 || offsetY != 0 || scrollingOffset != 0) {
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canvas.restore();
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}
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if (scrollNonFitText && textDoesNotFit) {
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if (scrollingOffset < AndroidUtilities.dp(10)) {
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fadeDrawable.setAlpha((int) (255 * (scrollingOffset / AndroidUtilities.dp(10))));
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} else if (scrollingOffset > totalWidth + AndroidUtilities.dp(DIST_BETWEEN_SCROLLING_TEXT) - AndroidUtilities.dp(10)) {
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float dist = scrollingOffset - (totalWidth + AndroidUtilities.dp(DIST_BETWEEN_SCROLLING_TEXT) - AndroidUtilities.dp(10));
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fadeDrawable.setAlpha((int) (255 * (1.0f - dist / AndroidUtilities.dp(10))));
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} else {
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fadeDrawable.setAlpha(255);
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}
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fadeDrawable.setBounds(0, 0, AndroidUtilities.dp(6), getMeasuredHeight());
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fadeDrawable.draw(canvas);
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fadeDrawableBack.setBounds(getMeasuredWidth() - AndroidUtilities.dp(6), 0, getMeasuredWidth(), getMeasuredHeight());
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fadeDrawableBack.draw(canvas);
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}
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updateScrollAnimation();
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}
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}
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@Override
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public void setBackgroundColor(int color) {
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if (scrollNonFitText) {
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if (fadeDrawable != null) {
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fadeDrawable.setColorFilter(new PorterDuffColorFilter(color, PorterDuff.Mode.MULTIPLY));
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fadeDrawableBack.setColorFilter(new PorterDuffColorFilter(color, PorterDuff.Mode.MULTIPLY));
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}
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} else {
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super.setBackgroundColor(color);
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}
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}
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private void updateScrollAnimation() {
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if (!scrollNonFitText || !textDoesNotFit) {
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return;
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}
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long newUpdateTime = SystemClock.uptimeMillis();
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long dt = newUpdateTime - lastUpdateTime;
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if (dt > 17) {
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dt = 17;
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}
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if (currentScrollDelay > 0) {
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currentScrollDelay -= dt;
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} else {
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int totalDistance = totalWidth + AndroidUtilities.dp(DIST_BETWEEN_SCROLLING_TEXT);
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float pixelsPerSecond;
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if (scrollingOffset < AndroidUtilities.dp(SCROLL_SLOWDOWN_PX)) {
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pixelsPerSecond = PIXELS_PER_SECOND_SLOW + (PIXELS_PER_SECOND - PIXELS_PER_SECOND_SLOW) * (scrollingOffset / AndroidUtilities.dp(SCROLL_SLOWDOWN_PX));
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} else if (scrollingOffset >= totalDistance - AndroidUtilities.dp(SCROLL_SLOWDOWN_PX)) {
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float dist = scrollingOffset - (totalDistance - AndroidUtilities.dp(SCROLL_SLOWDOWN_PX));
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pixelsPerSecond = PIXELS_PER_SECOND - (PIXELS_PER_SECOND - PIXELS_PER_SECOND_SLOW) * (dist / AndroidUtilities.dp(SCROLL_SLOWDOWN_PX));
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} else {
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pixelsPerSecond = PIXELS_PER_SECOND;
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}
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scrollingOffset += dt / 1000.0f * AndroidUtilities.dp(pixelsPerSecond);
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lastUpdateTime = newUpdateTime;
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if (scrollingOffset > totalDistance) {
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scrollingOffset = 0;
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currentScrollDelay = SCROLL_DELAY_MS;
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}
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}
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invalidate();
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}
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@Override
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public void invalidateDrawable(Drawable who) {
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if (who == leftDrawable) {
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invalidate(leftDrawable.getBounds());
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} else if (who == rightDrawable) {
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invalidate(rightDrawable.getBounds());
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}
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}
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@Override
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public boolean hasOverlappingRendering() {
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return false;
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}
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}
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