NekoX/TMessagesProj/src/main/java/org/telegram/ui/Components/LetterDrawable.java

127 lines
3.6 KiB
Java

/*
* This is the source code of Telegram for Android v. 5.x.x.
* It is licensed under GNU GPL v. 2 or later.
* You should have received a copy of the license in this archive (see LICENSE).
*
* Copyright Nikolai Kudashov, 2013-2018.
*/
package org.telegram.ui.Components;
import android.graphics.Canvas;
import android.graphics.ColorFilter;
import android.graphics.Paint;
import android.graphics.PixelFormat;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.drawable.Drawable;
import android.text.Layout;
import android.text.StaticLayout;
import android.text.TextPaint;
import org.telegram.messenger.AndroidUtilities;
import org.telegram.messenger.FileLog;
import org.telegram.ui.ActionBar.Theme;
public class LetterDrawable extends Drawable {
public static Paint paint = new Paint();
private static TextPaint namePaint;
private RectF rect = new RectF();
private StaticLayout textLayout;
private float textWidth;
private float textHeight;
private float textLeft;
private StringBuilder stringBuilder = new StringBuilder(5);
public LetterDrawable() {
this(null);
}
public LetterDrawable(Theme.ResourcesProvider resourcesProvider) {
super();
if (namePaint == null) {
namePaint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
}
namePaint.setTextSize(AndroidUtilities.dp(28));
paint.setColor(Theme.getColor(Theme.key_sharedMedia_linkPlaceholder, resourcesProvider));
namePaint.setColor(Theme.getColor(Theme.key_sharedMedia_linkPlaceholderText, resourcesProvider));
}
public void setBackgroundColor(int value) {
paint.setColor(value);
}
public void setColor(int value) {
namePaint.setColor(value);
}
public void setTitle(String title) {
stringBuilder.setLength(0);
if (title != null && title.length() > 0) {
stringBuilder.append(title.substring(0, 1));
}
if (stringBuilder.length() > 0) {
String text = stringBuilder.toString().toUpperCase();
try {
textLayout = new StaticLayout(text, namePaint, AndroidUtilities.dp(100), Layout.Alignment.ALIGN_NORMAL, 1.0f, 0.0f, false);
if (textLayout.getLineCount() > 0) {
textLeft = textLayout.getLineLeft(0);
textWidth = textLayout.getLineWidth(0);
textHeight = textLayout.getLineBottom(0);
}
} catch (Exception e) {
FileLog.e(e);
}
} else {
textLayout = null;
}
}
@Override
public void draw(Canvas canvas) {
Rect bounds = getBounds();
if (bounds == null) {
return;
}
rect.set(bounds.left, bounds.top, bounds.right, bounds.bottom);
canvas.drawRoundRect(rect, AndroidUtilities.dp(4), AndroidUtilities.dp(4), paint);
canvas.save();
if (textLayout != null) {
int size = bounds.width();
canvas.translate(bounds.left + (size - textWidth) / 2 - textLeft, bounds.top + (size - textHeight) / 2);
textLayout.draw(canvas);
}
canvas.restore();
}
@Override
public void setAlpha(int alpha) {
namePaint.setAlpha(alpha);
paint.setAlpha(alpha);
}
@Override
public void setColorFilter(ColorFilter cf) {
}
@Override
public int getOpacity() {
return PixelFormat.TRANSPARENT;
}
@Override
public int getIntrinsicWidth() {
return 0;
}
@Override
public int getIntrinsicHeight() {
return 0;
}
}