131 lines
		
	
	
	
		
			3.2 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			131 lines
		
	
	
	
		
			3.2 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
// This file is part of Desktop App Toolkit,
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// a set of libraries for developing nice desktop applications.
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//
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// For license and copyright information please follow this link:
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// https://github.com/desktop-app/legal/blob/master/LEGAL
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//
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#include "ui/layers/generic_box.h"
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#include "ui/wrap/vertical_layout.h"
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#include "ui/wrap/padding_wrap.h"
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#include "ui/wrap/wrap.h"
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#include "styles/style_layers.h"
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namespace Ui {
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void GenericBox::prepare() {
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	_init(this);
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	const auto currentWidth = width();
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	const auto pinnedToTop = _pinnedToTopContent.data();
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	const auto pinnedToBottom = _pinnedToBottomContent.data();
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	if (pinnedToTop) {
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		pinnedToTop->resizeToWidth(currentWidth);
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	}
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	if (pinnedToBottom) {
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		pinnedToBottom->resizeToWidth(currentWidth);
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	}
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	auto wrap = object_ptr<Ui::OverrideMargins>(this, std::move(_owned));
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	wrap->resizeToWidth(currentWidth);
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	rpl::combine(
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		pinnedToTop ? pinnedToTop->heightValue() : rpl::single(0),
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		wrap->heightValue(),
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		pinnedToBottom ? pinnedToBottom->heightValue() : rpl::single(0)
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	) | rpl::start_with_next([=](int top, int height, int bottom) {
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		Expects(_minHeight >= 0);
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		Expects(!_maxHeight || _minHeight <= _maxHeight);
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		setInnerTopSkip(top);
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		setInnerBottomSkip(bottom);
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		const auto desired = top + height + bottom;
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		setDimensions(
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			currentWidth,
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			std::clamp(
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				desired,
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				_minHeight,
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				_maxHeight ? _maxHeight : std::max(_minHeight, desired)),
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			true);
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	}, wrap->lifetime());
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	setInnerWidget(
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		std::move(wrap),
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		_scrollSt ? *_scrollSt : st::boxScroll,
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		pinnedToTop ? pinnedToTop->height() : 0,
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		pinnedToBottom ? pinnedToBottom->height() : 0);
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	if (pinnedToBottom) {
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		rpl::combine(
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			heightValue(),
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			pinnedToBottom->heightValue()
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		) | rpl::start_with_next([=](int outer, int height) {
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			pinnedToBottom->move(0, outer - height);
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		}, pinnedToBottom->lifetime());
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	}
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	if (const auto onstack = _initScroll) {
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		onstack();
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	}
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}
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void GenericBox::addSkip(int height) {
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	addRow(object_ptr<Ui::FixedHeightWidget>(this, height));
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}
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void GenericBox::setInnerFocus() {
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	if (_focus) {
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		_focus();
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	} else {
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		BoxContent::setInnerFocus();
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	}
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}
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void GenericBox::showFinished() {
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	const auto guard = QPointer(this);
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	if (const auto onstack = _showFinished) {
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		onstack();
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		if (!guard) {
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			return;
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		}
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	}
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	_showFinishes.fire({});
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}
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not_null<Ui::RpWidget*> GenericBox::doSetPinnedToTopContent(
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		object_ptr<Ui::RpWidget> content) {
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	_pinnedToTopContent = std::move(content);
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	return _pinnedToTopContent.data();
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}
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not_null<Ui::RpWidget*> GenericBox::doSetPinnedToBottomContent(
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		object_ptr<Ui::RpWidget> content) {
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	_pinnedToBottomContent = std::move(content);
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	return _pinnedToBottomContent.data();
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}
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int GenericBox::rowsCount() const {
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	return _content->count();
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}
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int GenericBox::width() const {
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	return _width ? _width : st::boxWidth;
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}
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not_null<Ui::VerticalLayout*> GenericBox::verticalLayout() {
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	return _content;
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}
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rpl::producer<> BoxShowFinishes(not_null<GenericBox*> box) {
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	const auto singleShot = box->lifetime().make_state<rpl::lifetime>();
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	const auto showFinishes = singleShot->make_state<rpl::event_stream<>>();
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	box->setShowFinishedCallback([=] {
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		showFinishes->fire({});
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		singleShot->destroy();
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		box->setShowFinishedCallback(nullptr);
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	});
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	return showFinishes->events();
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}
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} // namespace Ui
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