121 lines
3.6 KiB
C++
121 lines
3.6 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/buttons/icon_button.h"
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namespace Ui {
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IconButton::IconButton(QWidget *parent, const style::IconButton &st) : Button(parent)
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, _st(st) {
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resize(_st.width, _st.height);
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setCursor(style::cur_pointer);
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}
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void IconButton::setIcon(const style::icon *icon, const style::icon *iconOver) {
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_iconOverride = icon;
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_iconOverrideOver = iconOver;
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update();
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}
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void IconButton::paintEvent(QPaintEvent *e) {
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Painter p(this);
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auto over = _a_over.current(getms(), (_state & StateOver) ? 1. : 0.);
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auto overIcon = [this] {
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if (_iconOverrideOver) {
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return _iconOverrideOver;
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} else if (!_st.iconOver.empty()) {
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return &_st.iconOver;
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} else if (_iconOverride) {
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return _iconOverride;
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}
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return &_st.icon;
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};
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auto justIcon = [this] {
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if (_iconOverride) {
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return _iconOverride;
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}
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return &_st.icon;
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};
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auto icon = (over == 1.) ? overIcon() : justIcon();
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auto position = (_state & StateDown) ? _st.iconPositionDown : _st.iconPosition;
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if (position.x() < 0) {
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position.setX((width() - icon->width()) / 2);
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}
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icon->paint(p, position, width());
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if (over > 0. && over < 1.) {
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auto iconOver = overIcon();
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if (iconOver != icon) {
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p.setOpacity(over);
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iconOver->paint(p, position, width());
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}
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}
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}
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void IconButton::onStateChanged(int oldState, ButtonStateChangeSource source) {
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auto over = (_state & StateOver);
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if (over != (oldState & StateOver)) {
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if (_st.duration) {
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auto from = over ? 0. : 1.;
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auto to = over ? 1. : 0.;
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_a_over.start([this] { update(); }, from, to, _st.duration);
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} else {
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update();
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}
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}
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}
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MaskButton::MaskButton(QWidget *parent, const style::MaskButton &st) : Button(parent)
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, _st(st) {
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resize(_st.width, _st.height);
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setCursor(style::cur_pointer);
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setAttribute(Qt::WA_OpaquePaintEvent);
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}
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void MaskButton::onStateChanged(int oldState, ButtonStateChangeSource source) {
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auto over = (_state & StateOver);
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if (over != (oldState & StateOver)) {
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_a_iconOver.start([this] { update(); }, over ? 0. : 1., over ? 1. : 0., _st.duration);
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}
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}
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void MaskButton::paintEvent(QPaintEvent *e) {
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Painter p(this);
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auto clip = e->rect();
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auto position = (_state & StateDown) ? _st.iconPositionDown : _st.iconPosition;
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if (position.x() < 0) {
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position.setX((width() - _st.icon.width()) / 2);
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}
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if (position.y() < 0) {
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position.setY((height() - _st.icon.height()) / 2);
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}
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auto icon = myrtlrect(position.x(), position.y(), _st.icon.width(), _st.icon.height());
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if (!icon.contains(clip)) {
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p.fillRect(clip, _st.bg);
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}
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if (icon.intersects(clip)) {
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p.fillRect(icon.intersected(clip), anim::brush(_st.iconBg, _st.iconBgOver, _a_iconOver.current(getms(), (_state & StateOver) ? 1. : 0.)));
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_st.icon.paint(p, position, width());
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}
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}
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} // namespace Ui
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