tdesktop/Telegram/SourceFiles/info/info_layer_widget.cpp

211 lines
5.9 KiB
C++

/*
This file is part of Telegram Desktop,
the official desktop version of Telegram messaging app, see https://telegram.org
Telegram Desktop is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
It is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
In addition, as a special exception, the copyright holders give permission
to link the code of portions of this program with the OpenSSL library.
Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
*/
#include "info/info_layer_widget.h"
#include <rpl/mappers.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 "window/section_widget.h"
#include "window/window_controller.h"
#include "window/main_window.h"
#include "auth_session.h"
#include "styles/style_info.h"
#include "styles/style_settings.h"
#include "styles/style_window.h"
#include "styles/style_boxes.h"
namespace Info {
LayerWidget::LayerWidget(
not_null<Window::Controller*> controller,
not_null<Memento*> memento)
: _controller(controller)
, _content(this, controller, Wrap::Layer, memento) {
setupHeightConsumers();
}
LayerWidget::LayerWidget(
not_null<Window::Controller*> controller,
not_null<MoveMemento*> memento)
: _controller(controller)
, _content(memento->takeContent(this, Wrap::Layer)) {
setupHeightConsumers();
}
void LayerWidget::setupHeightConsumers() {
_content->scrollTillBottomChanges()
| rpl::filter([this] { return !_inResize; })
| rpl::start_with_next([this] {
resizeToWidth(width());
}, lifetime());
_content->desiredHeightValue()
| rpl::start_with_next([this](int height) {
accumulate_max(_desiredHeight, height);
if (_content && !_inResize) {
resizeToWidth(width());
}
}, lifetime());
}
void LayerWidget::showFinished() {
}
void LayerWidget::parentResized() {
auto parentSize = parentWidget()->size();
auto parentWidth = parentSize.width();
if (parentWidth < MinimalSupportedWidth()) {
Ui::FocusPersister persister(this);
auto localCopy = _controller;
auto memento = MoveMemento(std::move(_content));
localCopy->hideSpecialLayer(anim::type::instant);
localCopy->showSection(
std::move(memento),
Window::SectionShow(
Window::SectionShow::Way::Forward,
anim::type::instant,
anim::activation::background));
} else if (_controller->canShowThirdSectionWithoutResize()) {
takeToThirdSection();
} else {
auto newWidth = qMin(
parentWidth - 2 * st::infoMinimalLayerMargin,
st::infoDesiredWidth);
resizeToWidth(newWidth);
}
}
bool LayerWidget::takeToThirdSection() {
Ui::FocusPersister persister(this);
auto localCopy = _controller;
auto memento = MoveMemento(std::move(_content));
localCopy->hideSpecialLayer(anim::type::instant);
Auth().data().setThirdSectionInfoEnabled(true);
Auth().saveDataDelayed();
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 (_content->showInternal(memento, params)) {
if (params.activation != anim::activation::background) {
Ui::hideLayer();
}
return true;
}
return false;
}
int LayerWidget::MinimalSupportedWidth() {
auto minimalMargins = 2 * st::infoMinimalLayerMargin;
return st::infoMinimalWidth + minimalMargins;
}
int LayerWidget::resizeGetHeight(int newWidth) {
if (!parentWidget() || !_content) {
return 0;
}
_inResize = true;
auto guard = gsl::finally([&] { _inResize = false; });
auto parentSize = parentWidget()->size();
auto windowWidth = parentSize.width();
auto windowHeight = parentSize.height();
auto newLeft = (windowWidth - newWidth) / 2;
auto newTop = snap(
windowHeight / 24,
st::infoLayerTopMinimal,
st::infoLayerTopMaximal);
auto newBottom = newTop;
auto desiredHeight = st::boxRadius + _desiredHeight + st::boxRadius;
accumulate_min(desiredHeight, windowHeight - newTop - newBottom);
// First resize content to new width and get the new desired height.
auto contentLeft = 0;
auto contentTop = st::boxRadius;
auto contentBottom = st::boxRadius;
auto contentWidth = newWidth;
auto contentHeight = desiredHeight - contentTop - contentBottom;
auto scrollTillBottom = _content->scrollTillBottom(contentHeight);
auto additionalScroll = std::min(scrollTillBottom, newBottom);
desiredHeight += additionalScroll;
contentHeight += additionalScroll;
_tillBottom = (newTop + desiredHeight >= windowHeight);
if (_tillBottom) {
contentHeight += contentBottom;
additionalScroll += contentBottom;
}
_content->updateGeometry({
contentLeft,
contentTop,
contentWidth,
contentHeight }, additionalScroll);
auto newGeometry = QRect(newLeft, newTop, newWidth, desiredHeight);
if (newGeometry != geometry()) {
_content->forceContentRepaint();
}
if (newGeometry.topLeft() != geometry().topLeft()) {
move(newGeometry.topLeft());
}
return desiredHeight;
}
void LayerWidget::paintEvent(QPaintEvent *e) {
Painter p(this);
auto clip = e->rect();
auto r = st::boxRadius;
auto parts = RectPart::None | 0;
if (clip.intersects({ 0, 0, width(), r })) {
parts |= RectPart::FullTop;
}
if (!_tillBottom) {
if (clip.intersects({ 0, height() - r, width(), r })) {
parts |= RectPart::FullBottom;
}
}
if (parts) {
App::roundRect(
p,
rect(),
st::boxBg,
BoxCorners,
nullptr,
parts);
}
}
} // namespace Info