tdesktop/Telegram/SourceFiles/gui/flatlabel.cpp

124 lines
3.2 KiB
C++

/*
This file is part of Telegram Desktop,
the official desktop version of Telegram messaging app, see https://telegram.org
Telegram Desktop is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
It is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
Copyright (c) 2014 John Preston, https://desktop.telegram.org
*/
#include "stdafx.h"
#include "gui/flatlabel.h"
namespace {
TextParseOptions _labelOptions = {
TextParseMultiline, // flags
0, // maxw
0, // maxh
Qt::LayoutDirectionAuto, // dir
};
}
FlatLabel::FlatLabel(QWidget *parent, const QString &text, const style::flatLabel &st, const style::textStyle &tst) : TWidget(parent),
_text(st.width ? st.width : QFIXED_MAX), _st(st), _tst(tst), _opacity(1) {
setRichText(text);
}
void FlatLabel::setText(const QString &text) {
textstyleSet(&_tst);
_text.setText(_st.font, text, _labelOptions);
int32 w = _st.width ? _st.width : _text.maxWidth(), h = _text.countHeight(w);
textstyleRestore();
resize(w, h);
}
void FlatLabel::setRichText(const QString &text) {
textstyleSet(&_tst);
const char *t = text.toUtf8().constData();
_text.setRichText(_st.font, text, _labelOptions);
int32 w = _st.width ? _st.width : _text.maxWidth(), h = _text.countHeight(w);
textstyleRestore();
resize(w, h);
setMouseTracking(_text.hasLinks());
}
void FlatLabel::setLink(uint16 lnkIndex, const TextLinkPtr &lnk) {
_text.setLink(lnkIndex, lnk);
}
void FlatLabel::mouseMoveEvent(QMouseEvent *e) {
_lastMousePos = e->globalPos();
updateHover();
}
void FlatLabel::mousePressEvent(QMouseEvent *e) {
_lastMousePos = e->globalPos();
updateHover();
if (textlnkOver()) {
textlnkDown(textlnkOver());
update();
}
}
void FlatLabel::mouseReleaseEvent(QMouseEvent *e) {
_lastMousePos = e->globalPos();
updateHover();
if (textlnkOver() && textlnkOver() == textlnkDown()) {
textlnkOver()->onClick(e->button());
}
textlnkDown(TextLinkPtr());
}
void FlatLabel::leaveEvent(QEvent *e) {
if (_myLink) {
if (textlnkOver() == _myLink) {
textlnkOver(TextLinkPtr());
update();
}
_myLink = TextLinkPtr();
setCursor(style::cur_default);
}
}
void FlatLabel::updateLink() {
_lastMousePos = QCursor::pos();
updateHover();
}
void FlatLabel::updateHover() {
QPoint m(mapFromGlobal(_lastMousePos));
bool wasMy = (_myLink == textlnkOver());
textstyleSet(&_tst);
_myLink = _text.link(m.x(), m.y(), width(), _st.align);
textstyleRestore();
if (_myLink != textlnkOver()) {
if (wasMy || _myLink || rect().contains(m)) {
textlnkOver(_myLink);
}
setCursor(_myLink ? style::cur_pointer : style::cur_default);
update();
}
}
void FlatLabel::setOpacity(float64 o) {
_opacity = o;
update();
}
void FlatLabel::paintEvent(QPaintEvent *e) {
QPainter p(this);
p.setOpacity(_opacity);
textstyleSet(&_tst);
_text.draw(p, 0, 0, width(), _st.align, e->rect().y(), e->rect().bottom());
textstyleRestore();
}