418 lines
10 KiB
C++
418 lines
10 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 "window/window_title_qt.h"
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#include "ui/platform/ui_platform_utility.h"
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#include "ui/widgets/buttons.h"
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#include "ui/widgets/shadow.h"
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#include "styles/style_widgets.h"
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#include "styles/style_window.h"
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#include <QtCore/QCoreApplication>
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#include <QtGui/QGuiApplication>
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#include <QtGui/QWindow>
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namespace Window {
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namespace {
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[[nodiscard]] style::margins ShadowExtents() {
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return st::callShadow.extend;
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}
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template <typename T>
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void RemoveDuplicates(std::vector<T> &v) {
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auto end = v.end();
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for (auto it = v.begin(); it != end; ++it) {
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end = std::remove(it + 1, end, *it);
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}
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v.erase(end, v.end());
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}
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} // namespace
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TitleWidgetQt::TitleWidgetQt(QWidget *parent)
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: TitleWidget(parent)
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, _st(st::defaultWindowTitle)
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, _minimize(this, _st.minimize)
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, _maximizeRestore(this, _st.maximize)
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, _close(this, _st.close)
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, _shadow(this, st::titleShadow)
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, _maximizedState(parent->window()->windowState() & Qt::WindowMaximized) {
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_minimize->setClickedCallback([=] {
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window()->setWindowState(
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window()->windowState() | Qt::WindowMinimized);
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_minimize->clearState();
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});
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_minimize->setPointerCursor(false);
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_maximizeRestore->setClickedCallback([=] {
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window()->setWindowState(_maximizedState
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? Qt::WindowNoState
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: Qt::WindowMaximized);
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_maximizeRestore->clearState();
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});
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_maximizeRestore->setPointerCursor(false);
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_close->setClickedCallback([=] {
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window()->close();
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_close->clearState();
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});
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_close->setPointerCursor(false);
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Ui::Platform::TitleControlsLayoutChanged(
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) | rpl::start_with_next([=] {
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updateControlsPosition();
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}, lifetime());
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QCoreApplication::instance()->installEventFilter(this);
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_windowWasFrameless = (window()->windowFlags()
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& Qt::FramelessWindowHint) != 0;
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if (!_windowWasFrameless) {
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toggleFramelessWindow(true);
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}
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setAttribute(Qt::WA_OpaquePaintEvent);
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resize(width(), _st.height);
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updateWindowExtents();
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}
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TitleWidgetQt::~TitleWidgetQt() {
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restoreCursor();
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if (!_windowWasFrameless) {
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toggleFramelessWindow(false);
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}
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if (_extentsSet) {
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Ui::Platform::UnsetWindowExtents(window()->windowHandle());
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}
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}
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void TitleWidgetQt::init() {
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connect(
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window()->windowHandle(),
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&QWindow::windowStateChanged,
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this,
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[=](Qt::WindowState state) { windowStateChanged(state); });
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connect(
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window()->windowHandle(),
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&QWindow::visibleChanged,
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this,
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[=](bool visible) { visibleChanged(visible); });
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_maximizedState = (window()->windowState() & Qt::WindowMaximized);
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_activeState = isActiveWindow();
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updateButtonsState();
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}
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bool TitleWidgetQt::hasShadow() const {
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const auto center = window()->geometry().center();
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return Ui::Platform::WindowExtentsSupported()
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&& Ui::Platform::TranslucentWindowsSupported(center);
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}
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Ui::IconButton *TitleWidgetQt::controlWidget(Control control) const {
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switch (control) {
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case Control::Minimize: return _minimize;
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case Control::Maximize: return _maximizeRestore;
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case Control::Close: return _close;
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}
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return nullptr;
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}
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void TitleWidgetQt::paintEvent(QPaintEvent *e) {
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auto active = isActiveWindow();
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if (_activeState != active) {
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_activeState = active;
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updateButtonsState();
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}
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Painter(this).fillRect(rect(), active ? _st.bgActive : _st.bg);
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}
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void TitleWidgetQt::toggleFramelessWindow(bool enabled) {
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window()->windowHandle()->setFlag(Qt::FramelessWindowHint, enabled);
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}
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void TitleWidgetQt::updateWindowExtents() {
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if (hasShadow()) {
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Ui::Platform::SetWindowExtents(
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window()->windowHandle(),
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resizeArea());
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_extentsSet = true;
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} else if (_extentsSet) {
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Ui::Platform::UnsetWindowExtents(window()->windowHandle());
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_extentsSet = false;
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}
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}
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void TitleWidgetQt::updateControlsPosition() {
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const auto controlsLayout = Ui::Platform::TitleControlsLayout();
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const auto controlsLeft = controlsLayout.left;
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const auto controlsRight = controlsLayout.right;
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const auto controlPresent = [&](Control control) {
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return ranges::contains(controlsLeft, control)
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|| ranges::contains(controlsRight, control);
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};
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if (controlPresent(Control::Minimize)) {
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_minimize->show();
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} else {
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_minimize->hide();
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}
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if (controlPresent(Control::Maximize)) {
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_maximizeRestore->show();
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} else {
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_maximizeRestore->hide();
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}
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if (controlPresent(Control::Close)) {
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_close->show();
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} else {
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_close->hide();
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}
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updateControlsPositionBySide(controlsLeft, false);
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updateControlsPositionBySide(controlsRight, true);
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}
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void TitleWidgetQt::updateControlsPositionBySide(
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const std::vector<Control> &controls,
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bool right) {
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auto preparedControls = right
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? (ranges::views::reverse(controls) | ranges::to_vector)
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: controls;
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RemoveDuplicates(preparedControls);
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auto position = 0;
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for (const auto &control : preparedControls) {
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const auto widget = controlWidget(control);
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if (!widget) {
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continue;
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}
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if (right) {
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widget->moveToRight(position, 0);
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} else {
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widget->moveToLeft(position, 0);
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}
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position += widget->width();
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}
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}
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void TitleWidgetQt::resizeEvent(QResizeEvent *e) {
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updateControlsPosition();
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_shadow->setGeometry(0, height() - st::lineWidth, width(), st::lineWidth);
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}
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void TitleWidgetQt::mousePressEvent(QMouseEvent *e) {
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if (e->button() == Qt::LeftButton) {
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_mousePressed = true;
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} else if (e->button() == Qt::RightButton) {
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Ui::Platform::ShowWindowMenu(window()->windowHandle());
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}
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}
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void TitleWidgetQt::mouseReleaseEvent(QMouseEvent *e) {
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if (e->button() == Qt::LeftButton) {
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_mousePressed = false;
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}
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}
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void TitleWidgetQt::mouseMoveEvent(QMouseEvent *e) {
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if (_mousePressed) {
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window()->windowHandle()->startSystemMove();
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}
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}
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void TitleWidgetQt::mouseDoubleClickEvent(QMouseEvent *e) {
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if (_maximizedState) {
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window()->setWindowState(Qt::WindowNoState);
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} else {
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window()->setWindowState(Qt::WindowMaximized);
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}
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}
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bool TitleWidgetQt::eventFilter(QObject *obj, QEvent *e) {
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if (e->type() == QEvent::MouseMove
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|| e->type() == QEvent::MouseButtonPress) {
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if (obj->isWidgetType()
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&& window()->isAncestorOf(static_cast<QWidget*>(obj))) {
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const auto mouseEvent = static_cast<QMouseEvent*>(e);
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const auto currentPoint = mouseEvent->windowPos().toPoint();
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const auto edges = edgesFromPos(currentPoint);
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if (e->type() == QEvent::MouseMove
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&& mouseEvent->buttons() == Qt::NoButton) {
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if (_mousePressed) {
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_mousePressed = false;
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}
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updateCursor(edges);
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}
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if (e->type() == QEvent::MouseButtonPress
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&& mouseEvent->button() == Qt::LeftButton
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&& edges) {
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return window()->windowHandle()->startSystemResize(edges);
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}
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}
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} else if (e->type() == QEvent::Leave) {
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if (obj->isWidgetType() && window() == static_cast<QWidget*>(obj)) {
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restoreCursor();
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}
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} else if (e->type() == QEvent::Move
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|| e->type() == QEvent::Resize) {
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if (obj->isWidgetType() && window() == static_cast<QWidget*>(obj)) {
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updateWindowExtents();
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}
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}
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return TitleWidget::eventFilter(obj, e);
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}
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void TitleWidgetQt::windowStateChanged(Qt::WindowState state) {
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if (state == Qt::WindowMinimized) {
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return;
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}
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const auto maximized = (state == Qt::WindowMaximized);
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if (_maximizedState != maximized) {
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_maximizedState = maximized;
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updateButtonsState();
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updateWindowExtents();
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}
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}
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void TitleWidgetQt::visibleChanged(bool visible) {
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if (visible) {
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updateWindowExtents();
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// workaround a bug in Qt 5.12, works ok in Qt 5.15
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// https://github.com/telegramdesktop/tdesktop/issues/10119
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if (!_windowWasFrameless) {
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toggleFramelessWindow(true);
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}
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}
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}
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void TitleWidgetQt::updateButtonsState() {
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_minimize->setIconOverride(_activeState
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? &_st.minimizeIconActive
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: nullptr,
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_activeState
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? &_st.minimizeIconActiveOver
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: nullptr);
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if (_maximizedState) {
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_maximizeRestore->setIconOverride(
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_activeState
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? &_st.restoreIconActive : &_st.restoreIcon,
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_activeState
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? &_st.restoreIconActiveOver
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: &_st.restoreIconOver);
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} else {
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_maximizeRestore->setIconOverride(_activeState
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? &_st.maximizeIconActive
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: nullptr,
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_activeState
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? &_st.maximizeIconActiveOver
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: nullptr);
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}
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_close->setIconOverride(_activeState
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? &_st.closeIconActive
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: nullptr,
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_activeState
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? &_st.closeIconActiveOver
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: nullptr);
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}
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QMargins TitleWidgetQt::resizeArea() const {
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if (_maximizedState) {
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return QMargins();
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} else if (!hasShadow()) {
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return QMargins(
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st::windowResizeArea,
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st::windowResizeArea,
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st::windowResizeArea,
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st::windowResizeArea);
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}
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return ShadowExtents();
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}
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Qt::Edges TitleWidgetQt::edgesFromPos(const QPoint &pos) const {
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const auto area = resizeArea();
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if (area.isNull()) {
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return Qt::Edges();
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} else if (pos.x() <= area.left()) {
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if (pos.y() <= area.top()) {
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return Qt::LeftEdge | Qt::TopEdge;
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} else if (pos.y() >= (window()->height() - area.bottom())) {
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return Qt::LeftEdge | Qt::BottomEdge;
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}
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return Qt::LeftEdge;
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} else if (pos.x() >= (window()->width() - area.right())) {
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if (pos.y() <= area.top()) {
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return Qt::RightEdge | Qt::TopEdge;
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} else if (pos.y() >= (window()->height() - area.bottom())) {
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return Qt::RightEdge | Qt::BottomEdge;
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}
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return Qt::RightEdge;
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} else if (pos.y() <= area.top()) {
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return Qt::TopEdge;
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} else if (pos.y() >= (window()->height() - area.bottom())) {
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return Qt::BottomEdge;
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}
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return Qt::Edges();
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}
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void TitleWidgetQt::updateCursor(Qt::Edges edges) {
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if (!edges) {
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restoreCursor();
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return;
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} else if (!QGuiApplication::overrideCursor()) {
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_cursorOverriden = false;
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}
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if (!_cursorOverriden) {
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_cursorOverriden = true;
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QGuiApplication::setOverrideCursor(QCursor());
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}
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if (((edges & Qt::LeftEdge) && (edges & Qt::TopEdge))
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|| ((edges & Qt::RightEdge) && (edges & Qt::BottomEdge))) {
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QGuiApplication::changeOverrideCursor(QCursor(Qt::SizeFDiagCursor));
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} else if (((edges & Qt::LeftEdge) && (edges & Qt::BottomEdge))
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|| ((edges & Qt::RightEdge) && (edges & Qt::TopEdge))) {
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QGuiApplication::changeOverrideCursor(QCursor(Qt::SizeBDiagCursor));
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} else if ((edges & Qt::LeftEdge) || (edges & Qt::RightEdge)) {
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QGuiApplication::changeOverrideCursor(QCursor(Qt::SizeHorCursor));
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} else if ((edges & Qt::TopEdge) || (edges & Qt::BottomEdge)) {
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QGuiApplication::changeOverrideCursor(QCursor(Qt::SizeVerCursor));
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}
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}
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void TitleWidgetQt::restoreCursor() {
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if (_cursorOverriden) {
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_cursorOverriden = false;
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QGuiApplication::restoreOverrideCursor();
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}
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}
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} // namespace Window
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