64 lines
1.9 KiB
C++
64 lines
1.9 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop version of Telegram messaging app, see https://telegram.org
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Telegram Desktop 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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It 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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In addition, as a special exception, the copyright holders give permission
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to link the code of portions of this program with the OpenSSL library.
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Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
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Copyright (c) 2014-2016 John Preston, https://desktop.telegram.org
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*/
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#include "stdafx.h"
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#include "ui/widgets/label_simple.h"
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namespace Ui {
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LabelSimple::LabelSimple(QWidget *parent, const style::LabelSimple &st, const QString &value) : TWidget(parent)
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, _st(st) {
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setText(value);
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}
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void LabelSimple::setText(const QString &value, bool *outTextChanged) {
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if (_fullText == value) {
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if (outTextChanged) *outTextChanged = false;
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return;
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}
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_fullText = value;
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_fullTextWidth = _st.font->width(_fullText);
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if (!_st.maxWidth || _fullTextWidth <= _st.maxWidth) {
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_text = _fullText;
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_textWidth = _fullTextWidth;
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} else {
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auto newText = _st.font->elided(_fullText, _st.maxWidth);
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if (newText == _text) {
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if (outTextChanged) *outTextChanged = false;
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return;
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}
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_text = newText;
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_textWidth = _st.font->width(_text);
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}
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resize(_textWidth, _st.font->height);
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update();
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if (outTextChanged) *outTextChanged = true;
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}
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void LabelSimple::paintEvent(QPaintEvent *e) {
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Painter p(this);
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p.setFont(_st.font);
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p.setPen(_st.textFg);
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p.drawTextLeft(0, 0, width(), _text, _textWidth);
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}
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} // namespace Ui
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