c207743338
Now base::lambda can be copied and can wrap any immutable lambda. For mutable lambdas there is base::lambda_once (which you're supposed to call only once to pass data through lambda captures, for example by using std::unique_ptr). Generally base::lambda is passed by value and base::lambda_once is passed by rvalue reference.
149 lines
4.6 KiB
C++
149 lines
4.6 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop version of Telegram messaging app, see https://telegram.org
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Telegram Desktop is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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It is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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In addition, as a special exception, the copyright holders give permission
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to link the code of portions of this program with the OpenSSL library.
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Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
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Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
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*/
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#pragma once
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#include "styles/style_widgets.h"
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namespace Ui {
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class RippleAnimation;
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class Menu : public TWidget {
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Q_OBJECT
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public:
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Menu(QWidget *parent, const style::Menu &st = st::defaultMenu);
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Menu(QWidget *parent, QMenu *menu, const style::Menu &st = st::defaultMenu);
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QAction *addAction(const QString &text, const QObject *receiver, const char* member, const style::icon *icon = nullptr, const style::icon *iconOver = nullptr);
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QAction *addAction(const QString &text, base::lambda<void()> callback, const style::icon *icon = nullptr, const style::icon *iconOver = nullptr);
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QAction *addSeparator();
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void clearActions();
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void clearSelection();
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enum class TriggeredSource {
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Mouse,
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Keyboard,
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};
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void setChildShown(bool shown) {
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_childShown = shown;
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}
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void setShowSource(TriggeredSource source);
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using Actions = QList<QAction*>;
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Actions &actions();
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void setResizedCallback(base::lambda<void()> callback) {
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_resizedCallback = std::move(callback);
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}
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void setActivatedCallback(base::lambda<void(QAction *action, int actionTop, TriggeredSource source)> callback) {
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_activatedCallback = std::move(callback);
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}
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void setTriggeredCallback(base::lambda<void(QAction *action, int actionTop, TriggeredSource source)> callback) {
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_triggeredCallback = std::move(callback);
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}
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void setKeyPressDelegate(base::lambda<bool(int key)> delegate) {
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_keyPressDelegate = std::move(delegate);
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}
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void handleKeyPress(int key);
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void setMouseMoveDelegate(base::lambda<void(QPoint globalPosition)> delegate) {
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_mouseMoveDelegate = std::move(delegate);
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}
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void handleMouseMove(QPoint globalPosition);
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void setMousePressDelegate(base::lambda<void(QPoint globalPosition)> delegate) {
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_mousePressDelegate = std::move(delegate);
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}
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void handleMousePress(QPoint globalPosition);
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void setMouseReleaseDelegate(base::lambda<void(QPoint globalPosition)> delegate) {
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_mouseReleaseDelegate = std::move(delegate);
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}
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void handleMouseRelease(QPoint globalPosition);
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protected:
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void paintEvent(QPaintEvent *e) override;
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void keyPressEvent(QKeyEvent *e) override;
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void mouseMoveEvent(QMouseEvent *e) override;
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void mousePressEvent(QMouseEvent *e) override;
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void mouseReleaseEvent(QMouseEvent *e) override;
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void enterEventHook(QEvent *e) override;
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void leaveEventHook(QEvent *e) override;
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private slots:
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void actionChanged();
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private:
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void updateSelected(QPoint globalPosition);
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void init();
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// Returns the new width.
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int processAction(QAction *action, int index, int width);
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QAction *addAction(QAction *a, const style::icon *icon = nullptr, const style::icon *iconOver = nullptr);
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void setSelected(int selected);
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void clearMouseSelection();
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int itemTop(int index);
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void updateItem(int index);
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void updateSelectedItem();
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void itemPressed(TriggeredSource source);
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void itemReleased(TriggeredSource source);
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const style::Menu &_st;
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base::lambda<void()> _resizedCallback;
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base::lambda<void(QAction *action, int actionTop, TriggeredSource source)> _activatedCallback;
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base::lambda<void(QAction *action, int actionTop, TriggeredSource source)> _triggeredCallback;
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base::lambda<bool(int key)> _keyPressDelegate;
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base::lambda<void(QPoint globalPosition)> _mouseMoveDelegate;
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base::lambda<void(QPoint globalPosition)> _mousePressDelegate;
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base::lambda<void(QPoint globalPosition)> _mouseReleaseDelegate;
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struct ActionData {
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bool hasSubmenu = false;
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QString text;
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QString shortcut;
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const style::icon *icon = nullptr;
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const style::icon *iconOver = nullptr;
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QSharedPointer<RippleAnimation> ripple;
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};
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using ActionsData = QList<ActionData>;
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QMenu *_wappedMenu = nullptr;
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Actions _actions;
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ActionsData _actionsData;
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int _itemHeight, _separatorHeight;
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bool _mouseSelection = false;
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int _selected = -1;
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int _pressed = -1;
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bool _childShown = false;
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};
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} // namespace Ui
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