mirror of https://github.com/NekoX-Dev/NekoX.git
94 lines
2.8 KiB
Java
94 lines
2.8 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.Components;
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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.Rect;
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import android.text.TextPaint;
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import android.util.TypedValue;
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import org.telegram.ui.ActionBar.Theme;
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public class HintEditText extends EditTextBoldCursor {
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protected TextPaint hintPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
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private String hintText;
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private Rect rect = new Rect();
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public HintEditText(Context context) {
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super(context);
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hintPaint.setColor(Theme.getColor(Theme.key_windowBackgroundWhiteHintText));
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}
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@Override
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public void setTextSize(int unit, float size) {
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super.setTextSize(unit, size);
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hintPaint.setTextSize(TypedValue.applyDimension(unit, size, getResources().getDisplayMetrics()));
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}
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public String getHintText() {
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return hintText;
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}
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public void setHintText(String value) {
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hintText = value;
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onTextChange();
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setText(getText());
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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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super.onLayout(changed, left, top, right, bottom);
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onTextChange();
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}
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public void onTextChange() {
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invalidate();
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}
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@Override
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protected void onDraw(Canvas canvas) {
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if (hintText != null && length() < hintText.length()) {
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float offsetX = 0;
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for (int a = 0; a < hintText.length(); a++) {
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float newOffset;
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if (a < length()) {
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newOffset = getPaint().measureText(getText(), a, a + 1);
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} else {
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newOffset = hintPaint.measureText(hintText, a, a + 1);
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}
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if (!shouldDrawBehindText(a) && a < length()) {
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offsetX += newOffset;
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continue;
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}
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int color = hintPaint.getColor();
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canvas.save();
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hintPaint.getTextBounds(hintText, 0, hintText.length(), rect);
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float offsetY = (getHeight() + rect.height()) / 2f;
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onPreDrawHintCharacter(a, canvas, offsetX, offsetY);
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canvas.drawText(hintText, a, a + 1, offsetX, offsetY, hintPaint);
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offsetX += newOffset;
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canvas.restore();
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hintPaint.setColor(color);
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}
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}
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super.onDraw(canvas);
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}
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protected boolean shouldDrawBehindText(int index) {
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return false;
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}
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protected void onPreDrawHintCharacter(int index, Canvas canvas, float pivotX, float pivotY) {}
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}
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