136 lines
3.3 KiB
C++
136 lines
3.3 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop application for the Telegram messaging service.
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For license and copyright information please follow this link:
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https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
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*/
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#include "ui/rp_widget.h"
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namespace Ui {
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void ResizeFitChild(
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not_null<RpWidget*> parent,
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not_null<RpWidget*> child) {
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parent->widthValue(
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) | rpl::start_with_next([=](int width) {
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child->resizeToWidth(width);
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}, child->lifetime());
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child->heightValue(
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) | rpl::start_with_next([=](int height) {
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parent->resize(parent->width(), height);
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}, child->lifetime());
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}
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rpl::producer<QRect> RpWidgetMethods::geometryValue() const {
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auto &stream = eventStreams().geometry;
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return stream.events_starting_with_copy(callGetGeometry());
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}
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rpl::producer<QSize> RpWidgetMethods::sizeValue() const {
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return geometryValue()
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| rpl::map([](QRect &&value) { return value.size(); })
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| rpl::distinct_until_changed();
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}
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rpl::producer<int> RpWidgetMethods::heightValue() const {
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return geometryValue()
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| rpl::map([](QRect &&value) { return value.height(); })
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| rpl::distinct_until_changed();
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}
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rpl::producer<int> RpWidgetMethods::widthValue() const {
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return geometryValue()
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| rpl::map([](QRect &&value) { return value.width(); })
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| rpl::distinct_until_changed();
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}
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rpl::producer<QPoint> RpWidgetMethods::positionValue() const {
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return geometryValue()
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| rpl::map([](QRect &&value) { return value.topLeft(); })
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| rpl::distinct_until_changed();
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}
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rpl::producer<int> RpWidgetMethods::leftValue() const {
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return geometryValue()
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| rpl::map([](QRect &&value) { return value.left(); })
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| rpl::distinct_until_changed();
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}
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rpl::producer<int> RpWidgetMethods::topValue() const {
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return geometryValue()
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| rpl::map([](QRect &&value) { return value.top(); })
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| rpl::distinct_until_changed();
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}
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rpl::producer<int> RpWidgetMethods::desiredHeightValue() const {
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return heightValue();
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}
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rpl::producer<bool> RpWidgetMethods::shownValue() const {
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auto &stream = eventStreams().shown;
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return stream.events_starting_with(!callIsHidden());
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}
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rpl::producer<QRect> RpWidgetMethods::paintRequest() const {
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return eventStreams().paint.events();
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}
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rpl::producer<> RpWidgetMethods::alive() const {
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return eventStreams().alive.events();
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}
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rpl::lifetime &RpWidgetMethods::lifetime() {
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return _lifetime;
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}
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bool RpWidgetMethods::handleEvent(QEvent *event) {
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switch (event->type()) {
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case QEvent::Move:
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case QEvent::Resize:
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if (auto streams = _eventStreams.get()) {
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auto that = callCreateWeak();
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streams->geometry.fire_copy(callGetGeometry());
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if (!that) {
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return true;
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}
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}
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break;
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case QEvent::Paint:
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if (auto streams = _eventStreams.get()) {
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auto that = callCreateWeak();
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streams->paint.fire_copy(
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static_cast<QPaintEvent*>(event)->rect());
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if (!that) {
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return true;
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}
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}
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break;
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}
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return eventHook(event);
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}
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RpWidgetMethods::Initer::Initer(QWidget *parent) {
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parent->setGeometry(0, 0, 0, 0);
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}
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void RpWidgetMethods::visibilityChangedHook(bool wasVisible, bool nowVisible) {
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if (nowVisible != wasVisible) {
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if (auto streams = _eventStreams.get()) {
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streams->shown.fire_copy(nowVisible);
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}
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}
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}
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auto RpWidgetMethods::eventStreams() const -> EventStreams& {
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if (!_eventStreams) {
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_eventStreams = std::make_unique<EventStreams>();
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}
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return *_eventStreams;
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}
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} // namespace Ui
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