tdesktop/Telegram/SourceFiles/info/info_content_widget.cpp

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/*
This file is part of Telegram Desktop,
the official desktop application for the Telegram messaging service.
For license and copyright information please follow this link:
https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
*/
#include "info/info_content_widget.h"
#include <rpl/never.h>
#include <rpl/combine.h>
#include <rpl/range.h>
#include "window/window_session_controller.h"
#include "ui/widgets/scroll_area.h"
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#include "ui/widgets/input_fields.h"
#include "ui/wrap/padding_wrap.h"
#include "ui/search_field_controller.h"
#include "lang/lang_keys.h"
#include "info/profile/info_profile_widget.h"
#include "info/media/info_media_widget.h"
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#include "info/common_groups/info_common_groups_widget.h"
#include "info/info_layer_widget.h"
#include "info/info_section_widget.h"
#include "info/info_controller.h"
#include "boxes/peer_list_box.h"
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#include "data/data_session.h"
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#include "main/main_session.h"
#include "styles/style_info.h"
#include "styles/style_profile.h"
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#include <QtCore/QCoreApplication>
namespace Info {
ContentWidget::ContentWidget(
QWidget *parent,
not_null<Controller*> controller)
: RpWidget(parent)
, _controller(controller)
, _scroll(this, st::infoScroll) {
using namespace rpl::mappers;
setAttribute(Qt::WA_OpaquePaintEvent);
_controller->wrapValue(
) | rpl::start_with_next([this](Wrap value) {
if (value != Wrap::Layer) {
applyAdditionalScroll(0);
}
_bg = (value == Wrap::Layer)
? st::boxBg
: st::profileBg;
update();
}, lifetime());
if (_controller->section().type() != Section::Type::Profile) {
rpl::combine(
_controller->wrapValue(),
_controller->searchEnabledByContent(),
(_1 == Wrap::Layer) && _2
) | rpl::distinct_until_changed(
) | rpl::start_with_next([this](bool shown) {
refreshSearchField(shown);
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}, lifetime());
}
_scrollTopSkip.changes(
) | rpl::start_with_next([this] {
updateControlsGeometry();
}, lifetime());
}
void ContentWidget::resizeEvent(QResizeEvent *e) {
updateControlsGeometry();
}
void ContentWidget::updateControlsGeometry() {
if (!_innerWrap) {
return;
}
auto newScrollTop = _scroll->scrollTop() + _topDelta;
auto scrollGeometry = rect().marginsRemoved(
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QMargins(0, _scrollTopSkip.current(), 0, 0));
if (_scroll->geometry() != scrollGeometry) {
_scroll->setGeometry(scrollGeometry);
_innerWrap->resizeToWidth(_scroll->width());
}
if (!_scroll->isHidden()) {
if (_topDelta) {
_scroll->scrollToY(newScrollTop);
}
auto scrollTop = _scroll->scrollTop();
_innerWrap->setVisibleTopBottom(
scrollTop,
scrollTop + _scroll->height());
}
}
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std::shared_ptr<ContentMemento> ContentWidget::createMemento() {
auto result = doCreateMemento();
_controller->saveSearchState(result.get());
return result;
}
void ContentWidget::paintEvent(QPaintEvent *e) {
Painter p(this);
p.fillRect(e->rect(), _bg);
}
void ContentWidget::setGeometryWithTopMoved(
const QRect &newGeometry,
int topDelta) {
_topDelta = topDelta;
auto willBeResized = (size() != newGeometry.size());
if (geometry() != newGeometry) {
setGeometry(newGeometry);
}
if (!willBeResized) {
QResizeEvent fake(size(), size());
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QCoreApplication::sendEvent(this, &fake);
}
_topDelta = 0;
}
Ui::RpWidget *ContentWidget::doSetInnerWidget(
object_ptr<RpWidget> inner) {
using namespace rpl::mappers;
_innerWrap = _scroll->setOwnedWidget(
object_ptr<Ui::PaddingWrap<Ui::RpWidget>>(
this,
std::move(inner),
_innerWrap ? _innerWrap->padding() : style::margins()));
_innerWrap->move(0, 0);
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// MSVC BUG + REGRESSION rpl::mappers::tuple :(
rpl::combine(
_scroll->scrollTopValue(),
_scroll->heightValue(),
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_innerWrap->entity()->desiredHeightValue()
) | rpl::start_with_next([this](
int top,
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int height,
int desired) {
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const auto bottom = top + height;
_innerDesiredHeight = desired;
_innerWrap->setVisibleTopBottom(top, bottom);
_scrollTillBottomChanges.fire_copy(std::max(desired - bottom, 0));
}, _innerWrap->lifetime());
return _innerWrap->entity();
}
int ContentWidget::scrollTillBottom(int forHeight) const {
auto scrollHeight = forHeight - _scrollTopSkip.current();
auto scrollBottom = _scroll->scrollTop() + scrollHeight;
auto desired = _innerDesiredHeight;
return std::max(desired - scrollBottom, 0);
}
rpl::producer<int> ContentWidget::scrollTillBottomChanges() const {
return _scrollTillBottomChanges.events();
}
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void ContentWidget::setScrollTopSkip(int scrollTopSkip) {
_scrollTopSkip = scrollTopSkip;
}
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rpl::producer<int> ContentWidget::scrollHeightValue() const {
return _scroll->heightValue();
}
void ContentWidget::applyAdditionalScroll(int additionalScroll) {
if (_innerWrap) {
_innerWrap->setPadding({ 0, 0, 0, additionalScroll });
}
}
rpl::producer<int> ContentWidget::desiredHeightValue() const {
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using namespace rpl::mappers;
return rpl::combine(
_innerWrap->entity()->desiredHeightValue(),
_scrollTopSkip.value()
) | rpl::map(_1 + _2);
}
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rpl::producer<bool> ContentWidget::desiredShadowVisibility() const {
using namespace rpl::mappers;
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return rpl::combine(
_scroll->scrollTopValue(),
_scrollTopSkip.value()
) | rpl::map((_1 > 0) || (_2 > 0));
}
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bool ContentWidget::hasTopBarShadow() const {
return (_scroll->scrollTop() > 0);
}
void ContentWidget::setInnerFocus() {
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if (_searchField) {
_searchField->setFocus();
} else {
_innerWrap->entity()->setFocus();
}
}
int ContentWidget::scrollTopSave() const {
return _scroll->scrollTop();
}
void ContentWidget::scrollTopRestore(int scrollTop) {
_scroll->scrollToY(scrollTop);
}
void ContentWidget::scrollTo(const Ui::ScrollToRequest &request) {
_scroll->scrollTo(request);
}
bool ContentWidget::floatPlayerHandleWheelEvent(QEvent *e) {
return _scroll->viewportEvent(e);
}
QRect ContentWidget::floatPlayerAvailableRect() const {
return mapToGlobal(_scroll->geometry());
}
rpl::producer<SelectedItems> ContentWidget::selectedListValue() const {
return rpl::single(SelectedItems(Storage::SharedMediaType::Photo));
}
rpl::producer<bool> ContentWidget::canSaveChanges() const {
return rpl::single(false);
}
void ContentWidget::saveChanges(FnMut<void()> done) {
done();
}
void ContentWidget::refreshSearchField(bool shown) {
auto search = _controller->searchFieldController();
if (search && shown) {
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auto rowView = search->createRowView(
this,
st::infoLayerMediaSearch);
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_searchWrap = std::move(rowView.wrap);
_searchField = rowView.field;
const auto view = _searchWrap.get();
widthValue(
) | rpl::start_with_next([=](int newWidth) {
view->resizeToWidth(newWidth);
view->moveToLeft(0, 0);
}, view->lifetime());
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view->show();
_searchField->setFocus();
setScrollTopSkip(view->heightNoMargins() - st::lineWidth);
} else {
if (Ui::InFocusChain(this)) {
setFocus();
}
_searchWrap = nullptr;
setScrollTopSkip(0);
}
}
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Key ContentMemento::key() const {
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if (const auto peer = this->peer()) {
return Key(peer);
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//} else if (const auto feed = this->feed()) { // #feed
// return Key(feed);
} else if (const auto poll = this->poll()) {
return Key(poll, pollContextId());
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} else {
return Settings::Tag{ settingsSelf() };
}
}
ContentMemento::ContentMemento(Settings::Tag settings)
: _settingsSelf(settings.self.get()) {
}
} // namespace Info