tdesktop/Telegram/SourceFiles/ui/rp_widget.cpp

136 lines
3.3 KiB
C++

/*
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 "ui/rp_widget.h"
namespace Ui {
void ResizeFitChild(
not_null<RpWidget*> parent,
not_null<RpWidget*> child) {
parent->widthValue(
) | rpl::start_with_next([=](int width) {
child->resizeToWidth(width);
}, child->lifetime());
child->heightValue(
) | rpl::start_with_next([=](int height) {
parent->resize(parent->width(), height);
}, child->lifetime());
}
rpl::producer<QRect> RpWidgetMethods::geometryValue() const {
auto &stream = eventStreams().geometry;
return stream.events_starting_with_copy(callGetGeometry());
}
rpl::producer<QSize> RpWidgetMethods::sizeValue() const {
return geometryValue()
| rpl::map([](QRect &&value) { return value.size(); })
| rpl::distinct_until_changed();
}
rpl::producer<int> RpWidgetMethods::heightValue() const {
return geometryValue()
| rpl::map([](QRect &&value) { return value.height(); })
| rpl::distinct_until_changed();
}
rpl::producer<int> RpWidgetMethods::widthValue() const {
return geometryValue()
| rpl::map([](QRect &&value) { return value.width(); })
| rpl::distinct_until_changed();
}
rpl::producer<QPoint> RpWidgetMethods::positionValue() const {
return geometryValue()
| rpl::map([](QRect &&value) { return value.topLeft(); })
| rpl::distinct_until_changed();
}
rpl::producer<int> RpWidgetMethods::leftValue() const {
return geometryValue()
| rpl::map([](QRect &&value) { return value.left(); })
| rpl::distinct_until_changed();
}
rpl::producer<int> RpWidgetMethods::topValue() const {
return geometryValue()
| rpl::map([](QRect &&value) { return value.top(); })
| rpl::distinct_until_changed();
}
rpl::producer<int> RpWidgetMethods::desiredHeightValue() const {
return heightValue();
}
rpl::producer<bool> RpWidgetMethods::shownValue() const {
auto &stream = eventStreams().shown;
return stream.events_starting_with(!callIsHidden());
}
rpl::producer<QRect> RpWidgetMethods::paintRequest() const {
return eventStreams().paint.events();
}
rpl::producer<> RpWidgetMethods::alive() const {
return eventStreams().alive.events();
}
rpl::lifetime &RpWidgetMethods::lifetime() {
return _lifetime;
}
bool RpWidgetMethods::handleEvent(QEvent *event) {
switch (event->type()) {
case QEvent::Move:
case QEvent::Resize:
if (auto streams = _eventStreams.get()) {
auto that = callCreateWeak();
streams->geometry.fire_copy(callGetGeometry());
if (!that) {
return true;
}
}
break;
case QEvent::Paint:
if (auto streams = _eventStreams.get()) {
auto that = callCreateWeak();
streams->paint.fire_copy(
static_cast<QPaintEvent*>(event)->rect());
if (!that) {
return true;
}
}
break;
}
return eventHook(event);
}
RpWidgetMethods::Initer::Initer(QWidget *parent) {
parent->setGeometry(0, 0, 0, 0);
}
void RpWidgetMethods::visibilityChangedHook(bool wasVisible, bool nowVisible) {
if (nowVisible != wasVisible) {
if (auto streams = _eventStreams.get()) {
streams->shown.fire_copy(nowVisible);
}
}
}
auto RpWidgetMethods::eventStreams() const -> EventStreams& {
if (!_eventStreams) {
_eventStreams = std::make_unique<EventStreams>();
}
return *_eventStreams;
}
} // namespace Ui