139 lines
		
	
	
	
		
			3.7 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			139 lines
		
	
	
	
		
			3.7 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/effects/widget_slide_wrap.h"
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namespace Ui {
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WidgetSlideWrap<TWidget>::WidgetSlideWrap(QWidget *parent
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, TWidget *entity
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, style::margins entityPadding
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, base::lambda_unique<void()> updateCallback
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, int duration) : TWidget(parent)
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, _entity(entity)
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, _padding(entityPadding)
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, _duration(duration)
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, _updateCallback(std_::move(updateCallback))
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, _a_height(animation(this, &WidgetSlideWrap<TWidget>::step_height)) {
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	_entity->setParent(this);
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	_entity->moveToLeft(_padding.left(), _padding.top());
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	_realSize = _entity->rect().marginsAdded(_padding).size();
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	_entity->installEventFilter(this);
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	resize(_realSize);
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}
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void WidgetSlideWrap<TWidget>::slideUp() {
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	if (isHidden()) {
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		_forceHeight = 0;
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		resize(_realSize.width(), _forceHeight);
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		if (_updateCallback) _updateCallback();
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		return;
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	}
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	if (_a_height.animating()) {
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		if (_hiding) return;
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	} else {
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		a_height = anim::ivalue(_realSize.height());
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	}
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	a_height.start(0);
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	_hiding = true;
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	_a_height.start();
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}
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void WidgetSlideWrap<TWidget>::slideDown() {
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	if (isHidden()) {
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		show();
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	}
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	if (_forceHeight < 0) {
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		return;
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	}
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	if (_a_height.animating()) {
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		if (!_hiding) return;
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	}
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	a_height.start(_realSize.height());
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	_forceHeight = a_height.current();
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	_hiding = false;
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	_a_height.start();
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}
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void WidgetSlideWrap<TWidget>::showFast() {
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	show();
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	_a_height.stop();
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	resize(_realSize);
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	if (_updateCallback) {
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		_updateCallback();
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	}
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}
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void WidgetSlideWrap<TWidget>::hideFast() {
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	_a_height.stop();
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	a_height = anim::ivalue(0);
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	_forceHeight = 0;
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	resize(_realSize.width(), 0);
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	hide();
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	if (_updateCallback) {
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		_updateCallback();
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	}
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}
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int WidgetSlideWrap<TWidget>::naturalWidth() const {
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	auto inner = _entity->naturalWidth();
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	return (inner < 0) ? inner : (_padding.left() + inner + _padding.right());
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}
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bool WidgetSlideWrap<TWidget>::eventFilter(QObject *object, QEvent *event) {
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	if (object == _entity && event->type() == QEvent::Resize) {
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		_realSize = _entity->rect().marginsAdded(_padding).size();
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		if (!_inResizeToWidth) {
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			resize(_realSize.width(), (_forceHeight >= 0) ? _forceHeight : _realSize.height());
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			if (_updateCallback) {
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				_updateCallback();
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			}
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		}
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	}
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	return TWidget::eventFilter(object, event);
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}
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int WidgetSlideWrap<TWidget>::resizeGetHeight(int newWidth) {
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	_inResizeToWidth = true;
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	_entity->resizeToWidth(newWidth - _padding.left() - _padding.right());
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	_inResizeToWidth = false;
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	return (_forceHeight >= 0) ? _forceHeight : _realSize.height();
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}
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void WidgetSlideWrap<TWidget>::step_height(float64 ms, bool timer) {
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	auto dt = ms / _duration;
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	if (dt >= 1) {
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		a_height.finish();
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		_a_height.stop();
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		_forceHeight = _hiding ? 0 : -1;
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		if (_hiding) hide();
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	} else {
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		a_height.update(dt, anim::linear);
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		_forceHeight = a_height.current();
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	}
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	resize(_realSize.width(), (_forceHeight >= 0) ? _forceHeight : _realSize.height());
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	if (_updateCallback) {
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		_updateCallback();
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	}
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}
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} // namespace Ui
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