133 lines
3.5 KiB
C++
133 lines
3.5 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/flatlabel.h"
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namespace {
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TextParseOptions _labelOptions = {
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TextParseMultiline, // flags
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0, // maxw
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0, // maxh
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Qt::LayoutDirectionAuto, // dir
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};
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}
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FlatLabel::FlatLabel(QWidget *parent, const QString &text, const style::flatLabel &st, const style::textStyle &tst) : TWidget(parent),
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_text(st.width ? st.width : QFIXED_MAX), _st(st), _tst(tst), _opacity(1) {
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setRichText(text);
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}
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void FlatLabel::setText(const QString &text) {
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textstyleSet(&_tst);
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_text.setText(_st.font, text, _labelOptions);
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int32 w = _st.width ? _st.width : _text.maxWidth(), h = _text.countHeight(w);
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textstyleRestore();
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resize(w, h);
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}
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void FlatLabel::setRichText(const QString &text) {
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textstyleSet(&_tst);
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_text.setRichText(_st.font, text, _labelOptions);
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int32 w = _st.width ? _st.width : _text.maxWidth(), h = _text.countHeight(w);
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textstyleRestore();
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resize(w, h);
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setMouseTracking(_text.hasLinks());
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}
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void FlatLabel::resizeToWidth(int32 width) {
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textstyleSet(&_tst);
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int32 w = width, h = _text.countHeight(w);
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textstyleRestore();
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resize(w, h);
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}
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void FlatLabel::setLink(uint16 lnkIndex, const ClickHandlerPtr &lnk) {
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_text.setLink(lnkIndex, lnk);
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}
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void FlatLabel::mouseMoveEvent(QMouseEvent *e) {
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_lastMousePos = e->globalPos();
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updateHover();
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}
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void FlatLabel::mousePressEvent(QMouseEvent *e) {
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_lastMousePos = e->globalPos();
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updateHover();
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ClickHandler::pressed();
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}
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void FlatLabel::mouseReleaseEvent(QMouseEvent *e) {
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_lastMousePos = e->globalPos();
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updateHover();
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if (ClickHandlerPtr activated = ClickHandler::unpressed()) {
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App::activateClickHandler(activated, e->button());
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}
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}
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void FlatLabel::enterEvent(QEvent *e) {
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_lastMousePos = QCursor::pos();
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updateHover();
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}
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void FlatLabel::leaveEvent(QEvent *e) {
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ClickHandler::clearActive(this);
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}
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void FlatLabel::clickHandlerActiveChanged(const ClickHandlerPtr &action, bool active) {
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setCursor(active ? style::cur_pointer : style::cur_default);
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update();
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}
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void FlatLabel::clickHandlerPressedChanged(const ClickHandlerPtr &action, bool active) {
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update();
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}
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void FlatLabel::updateLink() {
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_lastMousePos = QCursor::pos();
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updateHover();
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}
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void FlatLabel::updateHover() {
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QPoint m(mapFromGlobal(_lastMousePos));
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textstyleSet(&_tst);
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Text::StateRequest request;
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request.align = _st.align;
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auto state = _text.getState(m.x(), m.y(), width(), request);
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textstyleRestore();
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ClickHandler::setActive(state.link, this);
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}
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void FlatLabel::setOpacity(float64 o) {
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_opacity = o;
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update();
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}
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void FlatLabel::paintEvent(QPaintEvent *e) {
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QPainter p(this);
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p.setOpacity(_opacity);
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textstyleSet(&_tst);
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_text.draw(p, 0, 0, width(), _st.align, e->rect().y(), e->rect().bottom());
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textstyleRestore();
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}
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