75 lines
2.5 KiB
Java
75 lines
2.5 KiB
Java
/*
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* Copyright (C) 2017 Schürmann & Breitmoser GbR
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.sufficientlysecure.keychain.ui.widget;
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import android.content.Context;
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import android.content.res.TypedArray;
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import android.graphics.*;
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import androidx.annotation.NonNull;
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import androidx.appcompat.widget.AppCompatEditText;
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import android.text.Layout;
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import android.text.TextPaint;
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import android.util.AttributeSet;
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import org.sufficientlysecure.keychain.R;
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public class PrefixedEditText extends AppCompatEditText {
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private CharSequence mPrefix;
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private int mPrefixColor;
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private int desiredWidth;
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public PrefixedEditText(Context context, AttributeSet attrs) {
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super(context, attrs);
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TypedArray style = context.getTheme().obtainStyledAttributes(
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attrs, R.styleable.PrefixedEditText, 0, 0);
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mPrefix = style.getString(R.styleable.PrefixedEditText_prefix);
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mPrefixColor = style.getColor(R.styleable.PrefixedEditText_prefixColor, getCurrentTextColor());
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if (mPrefix == null) {
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mPrefix = "";
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}
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}
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@Override
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protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
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super.onMeasure(widthMeasureSpec, heightMeasureSpec);
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desiredWidth = (int) Math.ceil(Layout.getDesiredWidth(mPrefix, getPaint()));
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}
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@Override
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protected void onDraw(@NonNull Canvas canvas) {
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super.onDraw(canvas);
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TextPaint paint = getPaint();
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// reset to the actual text color - it might be the hint color currently
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paint.setColor(mPrefixColor);
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canvas.drawText(mPrefix, 0, mPrefix.length(), super.getCompoundPaddingLeft(), getBaseline(), paint);
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}
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@Override
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public int getCompoundPaddingLeft() {
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return super.getCompoundPaddingLeft() + desiredWidth;
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}
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public void setPrefix(CharSequence prefix) {
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mPrefix = prefix;
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invalidate();
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requestLayout();
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}
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} |