120 lines
3.2 KiB
C++
120 lines
3.2 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 "button.h"
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Button::Button(QWidget *parent) : TWidget(parent), _state(StateNone), _acceptBoth(false) {
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}
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void Button::leaveEvent(QEvent *e) {
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if (_state & StateDown) return;
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setOver(false, ButtonByHover);
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setMouseTracking(false);
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return TWidget::leaveEvent(e);
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}
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void Button::enterEvent(QEvent *e) {
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setOver(true, ButtonByHover);
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setMouseTracking(true);
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return TWidget::enterEvent(e);
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}
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void Button::setAcceptBoth(bool acceptBoth) {
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_acceptBoth = acceptBoth;
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}
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void Button::mousePressEvent(QMouseEvent *e) {
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if (_acceptBoth || e->buttons() & Qt::LeftButton) {
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if (!(_state & StateOver)) {
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enterEvent(0);
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}
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if (!(_state & StateDown)) {
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int oldState = _state;
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_state |= StateDown;
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emit stateChanged(oldState, ButtonByPress);
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onStateChanged(oldState, ButtonByPress);
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e->accept();
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}
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}
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}
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void Button::mouseMoveEvent(QMouseEvent *e) {
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if (rect().contains(e->pos())) {
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setOver(true, ButtonByHover);
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} else {
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setOver(false, ButtonByHover);
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}
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}
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void Button::mouseReleaseEvent(QMouseEvent *e) {
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if (_state & StateDown) {
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int oldState = _state;
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_state &= ~StateDown;
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emit stateChanged(oldState, ButtonByPress);
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onStateChanged(oldState, ButtonByPress);
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if (oldState & StateOver) {
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_modifiers = e->modifiers();
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emit clicked();
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} else {
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leaveEvent(e);
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}
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}
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}
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void Button::setOver(bool over, ButtonStateChangeSource source) {
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if (over && !(_state & StateOver)) {
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int oldState = _state;
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_state |= StateOver;
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emit stateChanged(oldState, source);
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onStateChanged(oldState, source);
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} else if (!over && (_state & StateOver)) {
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int oldState = _state;
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_state &= ~StateOver;
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emit stateChanged(oldState, source);
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onStateChanged(oldState, source);
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}
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}
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void Button::setDisabled(bool disabled) {
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int oldState = _state;
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if (disabled && !(_state & StateDisabled)) {
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_state |= StateDisabled;
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emit stateChanged(oldState, ButtonByUser);
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onStateChanged(oldState, ButtonByUser);
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} else if (!disabled && (_state & StateDisabled)) {
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_state &= ~StateDisabled;
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emit stateChanged(oldState, ButtonByUser);
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onStateChanged(oldState, ButtonByUser);
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}
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}
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void Button::clearState() {
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int oldState = _state;
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_state = StateNone;
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emit stateChanged(oldState, ButtonByUser);
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onStateChanged(oldState, ButtonByUser);
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}
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int Button::getState() const {
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return _state;
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}
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