init

Telegram/SourceFiles/info/info_layer_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_layer_widget.h"
+
+#include "info/info_content_widget.h"
+#include "info/info_top_bar.h"
+#include "info/info_memento.h"
+#include "ui/rp_widget.h"
+#include "ui/focus_persister.h"
+#include "ui/widgets/buttons.h"
+#include "ui/cached_round_corners.h"
+#include "window/section_widget.h"
+#include "window/window_controller.h"
+#include "window/window_session_controller.h"
+#include "window/main_window.h"
+#include "main/main_session.h"
+#include "core/application.h"
+#include "styles/style_info.h"
+#include "styles/style_window.h"
+#include "styles/style_layers.h"
+
+namespace Info {
+
+LayerWidget::LayerWidget(
+	not_null<Window::SessionController*> controller,
+	not_null<Memento*> memento)
+: _controller(controller)
+, _contentWrap(this, controller, Wrap::Layer, memento) {
+	setupHeightConsumers();
+	controller->window().replaceFloatPlayerDelegate(floatPlayerDelegate());
+}
+
+LayerWidget::LayerWidget(
+	not_null<Window::SessionController*> controller,
+	not_null<MoveMemento*> memento)
+: _controller(controller)
+, _contentWrap(memento->takeContent(this, Wrap::Layer)) {
+	setupHeightConsumers();
+	controller->window().replaceFloatPlayerDelegate(floatPlayerDelegate());
+}
+
+auto LayerWidget::floatPlayerDelegate()
+-> not_null<::Media::Player::FloatDelegate*> {
+	return static_cast<::Media::Player::FloatDelegate*>(this);
+}
+
+not_null<Ui::RpWidget*> LayerWidget::floatPlayerWidget() {
+	return this;
+}
+
+void LayerWidget::floatPlayerToggleGifsPaused(bool paused) {
+	constexpr auto kReason = Window::GifPauseReason::RoundPlaying;
+	if (paused) {
+		_controller->enableGifPauseReason(kReason);
+	} else {
+		_controller->disableGifPauseReason(kReason);
+	}
+}
+
+auto LayerWidget::floatPlayerGetSection(Window::Column column)
+-> not_null<::Media::Player::FloatSectionDelegate*> {
+	Expects(_contentWrap != nullptr);
+
+	return _contentWrap;
+}
+
+void LayerWidget::floatPlayerEnumerateSections(Fn<void(
+		not_null<::Media::Player::FloatSectionDelegate*> widget,
+		Window::Column widgetColumn)> callback) {
+	Expects(_contentWrap != nullptr);
+
+	callback(_contentWrap, Window::Column::Second);
+}
+
+bool LayerWidget::floatPlayerIsVisible(not_null<HistoryItem*> item) {
+	return false;
+}
+
+void LayerWidget::floatPlayerDoubleClickEvent(
+		not_null<const HistoryItem*> item) {
+	_controller->showMessage(item);
+}
+
+void LayerWidget::setupHeightConsumers() {
+	Expects(_contentWrap != nullptr);
+
+	_contentWrap->scrollTillBottomChanges(
+	) | rpl::filter([this] {
+		if (!_inResize) {
+			return true;
+		}
+		_pendingResize = true;
+		return false;
+	}) | rpl::on_next([this] {
+		resizeToWidth(width());
+	}, lifetime());
+
+	_contentWrap->grabbingForExpanding(
+	) | rpl::on_next([=](bool grabbing) {
+		if (grabbing) {
+			_savedHeight = _contentWrapHeight;
+			_savedHeightAnimation = base::take(_heightAnimation);
+			setContentHeight(_desiredHeight);
+		} else {
+			_heightAnimation = base::take(_savedHeightAnimation);
+			setContentHeight(_savedHeight);
+		}
+	}, lifetime());
+
+	_contentWrap->desiredHeightValue(
+	) | rpl::on_next([this](int height) {
+		if (!height) {
+			// New content arrived.
+			_heightAnimated = _heightAnimation.animating();
+			return;
+		}
+		std::swap(_desiredHeight, height);
+		if (!height
+			|| (_heightAnimated && !_heightAnimation.animating())) {
+			_heightAnimated = true;
+			setContentHeight(_desiredHeight);
+		} else {
+			_heightAnimated = true;
+			_heightAnimation.start([=] {
+				setContentHeight(_heightAnimation.value(_desiredHeight));
+			}, _contentWrapHeight, _desiredHeight, st::slideDuration);
+			resizeToWidth(width());
+		}
+	}, lifetime());
+}
+
+void LayerWidget::setContentHeight(int height) {
+	if (_contentWrapHeight == height) {
+		return;
+	}
+	_contentWrapHeight = height;
+	if (_inResize) {
+		_pendingResize = true;
+	} else if (_contentWrap) {
+		resizeToWidth(width());
+	}
+}
+
+void LayerWidget::showFinished() {
+	floatPlayerShowVisible();
+	_contentWrap->showFast();
+}
+
+void LayerWidget::parentResized() {
+	if (!_contentWrap) {
+		return;
+	}
+
+	auto parentSize = parentWidget()->size();
+	auto parentWidth = parentSize.width();
+	if (parentWidth < MinimalSupportedWidth()) {
+		Ui::FocusPersister persister(this);
+		restoreFloatPlayerDelegate();
+
+		auto memento = std::make_shared<MoveMemento>(std::move(_contentWrap));
+
+		// We want to call hideSpecialLayer synchronously to avoid glitches,
+		// but we can't destroy LayerStackWidget from its' resizeEvent,
+		// because QWidget has such code for resizing:
+		//
+		// QResizeEvent e(r.size(), olds);
+		// QApplication::sendEvent(q, &e);
+		// if (q->windowHandle())
+		//   q->update();
+		//
+		// So we call it queued. It would be cool to call it 'right after'
+		// the resize event handling was finished.
+		InvokeQueued(this, [=] {
+			_controller->hideSpecialLayer(anim::type::instant);
+		});
+		_controller->showSection(
+			std::move(memento),
+			Window::SectionShow(
+				Window::SectionShow::Way::Forward,
+				anim::type::instant,
+				anim::activation::background));
+	//
+	// There was a layout logic which caused layer info to become a
+	// third column info if the window size allows, but it was decided
+	// to keep layer info and third column info separated.
+	//
+	//} else if (_controller->canShowThirdSectionWithoutResize()) {
+	//	takeToThirdSection();
+	} else {
+		auto newWidth = qMin(
+			parentWidth - 2 * st::infoMinimalLayerMargin,
+			st::infoDesiredWidth);
+		resizeToWidth(newWidth);
+	}
+}
+
+bool LayerWidget::takeToThirdSection() {
+	return false;
+	//
+	// There was a layout logic which caused layer info to become a
+	// third column info if the window size allows, but it was decided
+	// to keep layer info and third column info separated.
+	//
+	//Ui::FocusPersister persister(this);
+	//auto localCopy = _controller;
+	//auto memento = MoveMemento(std::move(_contentWrap));
+	//localCopy->hideSpecialLayer(anim::type::instant);
+
+	//// When creating third section in response to the window
+	//// size allowing it to fit without window resize we want
+	//// to save that we didn't extend the window while showing
+	//// the third section, so that when we close it we won't
+	//// shrink the window size.
+	////
+	//// See https://github.com/telegramdesktop/tdesktop/issues/4091
+	//localCopy->session()().settings().setThirdSectionExtendedBy(0);
+
+	//localCopy->session()().settings().setThirdSectionInfoEnabled(true);
+	//localCopy->session()().saveSettingsDelayed();
+	//localCopy->showSection(
+	//	std::move(memento),
+	//	Window::SectionShow(
+	//		Window::SectionShow::Way::ClearStack,
+	//		anim::type::instant,
+	//		anim::activation::background));
+	//return true;
+}
+
+bool LayerWidget::showSectionInternal(
+		not_null<Window::SectionMemento*> memento,
+		const Window::SectionShow &params) {
+	if (_contentWrap && _contentWrap->showInternal(memento, params)) {
+		if (params.activation != anim::activation::background) {
+			_controller->parentController()->hideLayer();
+		}
+		return true;
+	}
+	return false;
+}
+
+bool LayerWidget::closeByOutsideClick() const {
+	return _contentWrap ? _contentWrap->closeByOutsideClick() : true;
+}
+
+int LayerWidget::MinimalSupportedWidth() {
+	const auto minimalMargins = 2 * st::infoMinimalLayerMargin;
+	return st::infoMinimalWidth + minimalMargins;
+}
+
+int LayerWidget::resizeGetHeight(int newWidth) {
+	if (!parentWidget() || !_contentWrap || !newWidth) {
+		return 0;
+	}
+	constexpr auto kMaxAttempts = 16;
+	auto attempts = 0;
+	while (true) {
+		_inResize = true;
+		const auto newGeometry = countGeometry(newWidth);
+		_inResize = false;
+		if (!_pendingResize) {
+			const auto oldGeometry = geometry();
+			if (newGeometry != oldGeometry) {
+				_contentWrap->forceContentRepaint();
+			}
+			if (newGeometry.topLeft() != oldGeometry.topLeft()) {
+				move(newGeometry.topLeft());
+			}
+			floatPlayerUpdatePositions();
+			return newGeometry.height();
+		}
+		_pendingResize = false;
+		Assert(attempts++ < kMaxAttempts);
+	}
+}
+
+QRect LayerWidget::countGeometry(int newWidth) {
+	const auto &parentSize = parentWidget()->size();
+	const auto windowWidth = parentSize.width();
+	const auto windowHeight = parentSize.height();
+	const auto newLeft = (windowWidth - newWidth) / 2;
+	const auto newTop = std::clamp(
+		windowHeight / 24,
+		st::infoLayerTopMinimal,
+		st::infoLayerTopMaximal);
+	const auto newBottom = newTop;
+
+	const auto bottomRadius = st::boxRadius;
+	const auto maxVisibleHeight = windowHeight - newTop;
+	// Top rounding is included in _contentWrapHeight.
+	auto desiredHeight = _contentWrapHeight + bottomRadius;
+	accumulate_min(desiredHeight, maxVisibleHeight - newBottom);
+
+	// First resize content to new width and get the new desired height.
+	const auto contentLeft = 0;
+	const auto contentTop = 0;
+	const auto contentBottom = bottomRadius;
+	const auto contentWidth = newWidth;
+	auto contentHeight = desiredHeight - contentTop - contentBottom;
+	const auto scrollTillBottom = _contentWrap->scrollTillBottom(
+		contentHeight);
+	auto additionalScroll = std::min(scrollTillBottom, newBottom);
+
+	const auto expanding = (_desiredHeight > _contentWrapHeight);
+
+	desiredHeight += additionalScroll;
+	contentHeight += additionalScroll;
+	_tillBottom = (desiredHeight >= maxVisibleHeight);
+	if (_tillBottom) {
+		additionalScroll += contentBottom;
+	}
+	_contentTillBottom = _tillBottom && !_contentWrap->scrollBottomSkip();
+	if (_contentTillBottom) {
+		contentHeight += contentBottom;
+	}
+	_contentWrap->updateGeometry({
+		contentLeft,
+		contentTop,
+		contentWidth,
+		contentHeight,
+	}, expanding, additionalScroll, maxVisibleHeight);
+
+	return QRect(newLeft, newTop, newWidth, desiredHeight);
+}
+
+void LayerWidget::doSetInnerFocus() {
+	if (_contentWrap) {
+		_contentWrap->setInnerFocus();
+	}
+}
+
+void LayerWidget::paintEvent(QPaintEvent *e) {
+	auto p = QPainter(this);
+
+	const auto clip = e->rect();
+	const auto radius = st::boxRadius;
+	const auto &corners = Ui::CachedCornerPixmaps(Ui::BoxCorners);
+	if (!_tillBottom) {
+		const auto bottom = QRect{ 0, height() - radius, width(), radius };
+		if (clip.intersects(bottom)) {
+			if (const auto rounding = _contentWrap->bottomSkipRounding()) {
+				rounding->paint(p, rect(), RectPart::FullBottom);
+			} else {
+				Ui::FillRoundRect(p, bottom, st::boxBg, {
+					.p = { QPixmap(), QPixmap(), corners.p[2], corners.p[3] }
+				});
+			}
+		}
+	} else if (!_contentTillBottom) {
+		const auto rounding = _contentWrap->bottomSkipRounding();
+		const auto &color = rounding ? rounding->color() : st::boxBg;
+		p.fillRect(0, height() - radius, width(), radius, color);
+	}
+	if (_contentWrap->animatingShow()) {
+		const auto top = QRect{ 0, 0, width(), radius };
+		if (clip.intersects(top)) {
+			Ui::FillRoundRect(p, top, st::boxBg, {
+				.p = { corners.p[0], corners.p[1], QPixmap(), QPixmap() }
+			});
+		}
+		p.fillRect(0, radius, width(), height() - 2 * radius, st::boxBg);
+	}
+}
+
+void LayerWidget::restoreFloatPlayerDelegate() {
+	if (!_floatPlayerDelegateRestored) {
+		_floatPlayerDelegateRestored = true;
+		_controller->window().restoreFloatPlayerDelegate(
+			floatPlayerDelegate());
+	}
+}
+
+void LayerWidget::closeHook() {
+	restoreFloatPlayerDelegate();
+}
+
+LayerWidget::~LayerWidget() {
+	if (!Core::Quitting()) {
+		restoreFloatPlayerDelegate();
+	}
+}
+
+} // namespace Info