qtui: Fix icon loading and improve icon theme support

[quassel.git] / src / qtui / qtui.h

diff --git a/src/qtui/qtui.h b/src/qtui/qtui.h
index 8ad7aa3..0d13e64 100644 (file)
--- a/src/qtui/qtui.h
+++ b/src/qtui/qtui.h
@@ -1,5 +1,5 @@
 /***************************************************************************
- *   Copyright (C) 2005-2013 by the Quassel Project                        *
+ *   Copyright (C) 2005-2018 by the Quassel Project                        *
  *   devel@quassel-irc.org                                                 *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
@@ -18,12 +18,20 @@
  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.         *
  ***************************************************************************/
 
-#ifndef QTUI_H
-#define QTUI_H
+#pragma once
 
-#include "graphicalui.h"
+#include <memory>
+#include <tuple>
+#include <vector>
+
+#include <QStringList>
+
+#if QT_VERSION >= 0x050000
+#  include <QTemporaryDir>
+#endif
 
 #include "abstractnotificationbackend.h"
+#include "graphicalui.h"
 #include "qtuistyle.h"
 
 class MainWin;
@@ -42,8 +50,8 @@ public:
     QtUi();
     ~QtUi();
 
-    MessageModel *createMessageModel(QObject *parent);
-    AbstractMessageProcessor *createMessageProcessor(QObject *parent);
+    MessageModel *createMessageModel(QObject *parent) override;
+    AbstractMessageProcessor *createMessageProcessor(QObject *parent) override;
 
     inline static QtUi *instance();
     inline static QtUiStyle *style();
@@ -59,32 +67,59 @@ public:
     static const QList<AbstractNotificationBackend *> &notificationBackends();
     static const QList<AbstractNotificationBackend::Notification> &activeNotifications();
 
+    /**
+     * Determine available fallback icon themes.
+     *
+     * @returns The list of supported fallback themes (Breeze (Dark), Oxygen) that are available on the system
+     */
+    std::vector<std::pair<QString, QString>> availableIconThemes() const;
+
 public slots:
-    virtual void init();
+    void init() override;
 
     uint invokeNotification(BufferId bufId, AbstractNotificationBackend::NotificationType type, const QString &sender, const QString &text);
     void closeNotification(uint notificationId);
     void closeNotifications(BufferId bufferId = BufferId());
 
+    /**
+     * Refresh the current icon theme.
+     *
+     * @note This will not detect changes in the system icon theme, so if that changes, a client restart
+     *       is required for icons to work correctly.
+     */
+    void refreshIconTheme();
+
 protected slots:
-    void connectedToCore();
-    void disconnectedFromCore();
+    void connectedToCore() override;
+    void disconnectedFromCore() override;
     void notificationActivated(uint notificationId);
     void bufferMarkedAsRead(BufferId);
 
 protected:
-    virtual void minimizeRestore(bool show);
-    virtual bool isHidingMainWidgetAllowed() const;
+    void minimizeRestore(bool show) override;
+    bool isHidingMainWidgetAllowed() const override;
 
 private slots:
     void useSystemTrayChanged(const QVariant &);
 
+private:
+    /**
+     * Sets up icon theme handling.
+     */
+    void setupIconTheme();
+
 private:
     static QtUi *_instance;
     static MainWin *_mainWin;
     static QList<AbstractNotificationBackend *> _notificationBackends;
     static QList<AbstractNotificationBackend::Notification> _notifications;
 
+    QString _systemIconTheme;
+
+#if QT_VERSION >= 0x050000
+    std::unique_ptr<QTemporaryDir> _dummyThemeDir;
+#endif
+
     bool _useSystemTray;
 };
 
@@ -92,5 +127,3 @@ private:
 QtUi *QtUi::instance() { return _instance ? _instance : new QtUi(); }
 QtUiStyle *QtUi::style() { return qobject_cast<QtUiStyle *>(uiStyle()); }
 MainWin *QtUi::mainWindow() { return _mainWin; }
-
-#endif