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Unigine::WindowManager Class

Header: #include <UnigineWindowManager.h>

The class to manage windows enabling you to access any window of the appllication, group or stack windows, create various dialogs and so on.

Accessing Windows#

An application window can be accessed via the getWindow() function. There are also some functions (like getMainWindow()) that allow accessing the specific windows (a focused window, a fullscreen window and so on).

Source code (C++)
// get the main window
EngineWindowPtr main_window = WindowManager::getMainWindow();
// change its position and size
if (main_window)
{
	main_window->setPosition(Math::ivec2(1020, 60));
	main_window->setSize(Math::ivec2(305, 670));
}

Grouping Windows#

The engine windows created via the EngineWindowclass can be grouped. There are three types of the window groups:

  • Vertical
  • Horizontal
  • Group of tabs

The number of windows in the group is unlimited.

The WindowManager class provides two main functions for grouping windows:

Source code (C++)
// create separate windows
EngineWindowPtr horizontal_1 = EngineWindowViewport::create("Horizontal 1", 512, 256);
EngineWindowPtr horizontal_2 = EngineWindowViewport::create("Horizontal 2", 512, 256);
EngineWindowPtr horizontal_3 = EngineWindowViewport::create("Horizontal 3", 512, 256);
EngineWindowPtr horizontal_4 = EngineWindowViewport::create("Horizontal 4", 512, 256);

// create 2 horizontal window groups 
EngineWindowGroupPtr horizontal_group_1 = WindowManager::stack(horizontal_1, horizontal_2, EngineWindowGroup::GROUP_TYPE_HORIZONTAL);
EngineWindowGroupPtr horizontal_group_2 = WindowManager::stack(horizontal_3, horizontal_4, EngineWindowGroup::GROUP_TYPE_HORIZONTAL);

// create a vertical group of 2 horizontal groups
EngineWindowGroupPtr vertical_group = WindowManager::stackGroups(horizontal_group_1, horizontal_group_2, EngineWindowGroup::GROUP_TYPE_VERTICAL);

// specify position, size, title of the verical window group
vertical_group->setPosition(Math::ivec2(50, 60));
vertical_group->setSize(Math::ivec2(565, 310));
vertical_group->setTitle("Horizontal Group");

// render the window group
vertical_group->show();

Each window or window group has a state, so it changes after stacking.

There are also functions based on the stack() function that should be used in specific cases to avoid additional checking of arguments:

  • stackToParentGroup()stacks the second window to the parent group of the first window. In the result, both windows passed as arguments will be on the same level in the group hierarchy.
  • stackWindows()creates a group of the separate/nested windows. The windows are stacked in the default order.
  • stack()stacks the window to the other window. If the first argument is the separate window, a new window group is returned. If the first argument is the nested window, the window is added to its group.
  • stackToGroup()stacks the window or window group to another window group.

Follow the links to see the code examples.

For ungrouping, the unstack()function is used: it removes the window or the window group from the parent group.

Creating Dialog Windows#

To create a dialog window, use the corresponding functions of the class. For example:

Source code (C++)
// event handler function
int AppSystemLogic::onButtonClicked()
{
	// show the message dialog
	WindowManager::dialogMessage("Message", "Button has been clicked");

	return 1;

}

int AppSystemLogic::init()
{

	// create a window with widgets in the client area
	auto create_window = [](const char* name)
	{
		EngineWindowViewportPtr window = EngineWindowViewport::create(name, 512, 256);

		window->addChild(WidgetLabel::create(window->getSelfGui(), String::format("This is %s window.", name)), Gui::ALIGN_TOP);
		window->addChild(WidgetButton::create(window->getSelfGui(), name), Gui::ALIGN_CENTER);
		return window;

	};

	{
		// create a window
		EngineWindowViewportPtr window = create_window("Window");
		// get the child widget of the window
		WidgetPtr button = window->getChild(1);
		// add a callback for this widget
		button->addCallback(Gui::CLICKED, MakeCallback(this, &AppSystemLogic::onButtonClicked));
		// show the window
		window->setPosition(Math::ivec2(50, 60));
		window->show();

	}

	return 1;
}

See Also#

WindowManager Class

Enums

DPI_AWARENESS#

ИмяОписание
DPI_AWARENESS_CUSTOM = -1The DPI awareness is set not on the engine side. For example, when the application is integrated via CustomSystemProxy, the user sets the required mode.
DPI_AWARENESS_UNAWARE = CUSTOM + 1Scaling is not taken into account. Windows are displayed with the default DPI level of 96 (100%). The operating system will stretch the raster part of the window and it will look blurry.
DPI_AWARENESS_SYSTEM_AWARE = UNAWARE + 1The DPI level of the main system display is obtained. Only with this DPI level the image is displayed clearly. Displays with another DPI level of changing of the DPI value on the main system display while running the application will cause the image blurring.
DPI_AWARENESS_PER_MONITOR_AWARE = SYSTEM_AWARE + 1Windows get the DPI level from each display individually.
Notice
Not available on Linux.

Members

getMainWindow() const#

Returns the current

Return value

Current

getNumWindows() const#

Returns the current

Return value

Current

bool isFullscreenMode() const#

Returns the current value indicating if the window is the fullscreen state.

Return value

true if is enabled; otherwise false.

bool isMultipleWindowsSupported() const#

Returns the current value indicating if multiple windows are supported.

Return value

true if is enabled; otherwise false.

Ptr<EngineWindow> getFocusedWindow() const#

Returns the current

Return value

Current

Ptr<EngineWindow> getUnderCursorWindow() const#

Returns the current

Return value

Current

Ptr<EngineWindowViewport> getSystemFocusedWindow() const#

Returns the current

Return value

Current

bool isAutoDpiScaling() const#

Returns the current value value specifying if automatic DPI scaling is applied to the window. If automatic DPI scaling is disabled, all GUI elements have the 100% size, only the system window size is scaled.
Notice
This value is stored in the boot config file and can be changed only at the application startup. It cannot be changed at runtime, thus at an attempt to change the value the console will show the corresponding warning.

Return value

true if is enabled; otherwise false.

WindowManager::DPI_AWARENESS getDpiAwareness() const#

Returns the current DPI awareness mode, the value indicating how the application processes the DPI scaling. The value is set to PER_MONITOR_AWARE by default. On Windows, if a specified mode cannot be set, it will switch to a possible lower value with a corresponding warning. On Linux, PER_MONITOR_AWARE is currently not supported, setting this value will switch the mode to the SYSTEM_AWARE mode with the corresponding warning in the console.
Notice
This value is stored in the boot config file and can be changed only at the application startup. It cannot be changed at runtime, thus at an attempt to change the value the console will show the corresponding warning.

Return value

Current

WindowManager::DPI_AWARENESS getCurrentDpiAwareness() const#

Returns the current current actual DPI awareness mode, the value indicating how the application processes the DPI scaling. The value is set to PER_MONITOR_AWARE by default. On Windows, if a specified mode cannot be set, it will switch to a possible lower value with a corresponding warning. On Linux, PER_MONITOR_AWARE is currently not supported, setting this value will switch the mode to the SYSTEM_AWARE mode with the corresponding warning in the console.
Notice
This is an actual value, it may differ from the mode stored in the boot config file (in case the system cannot set the specified mode it will try to use the one that is suitable instead).

Return value

Current

Event<const Ptr<WindowEvent> &> getEventImmediateWindowEvent() const#

event triggered immediately as event from the window is received from proxy before being processed by the engine. This event can be triggered in different threads depending on the proxy implementation. You can subscribe to events via connect()  and unsubscribe via disconnect(). You can also use EventConnection  and EventConnections  classes for convenience (see examples below).
Notice
For more details see the Event Handling article.
The event handler signature is as follows: myhandler(const Ptr<WindowEvent> & event)

Usage Example

Source code (C++)
// implement the ImmediateWindowEvent event handler
void immediatewindowevent_event_handler(const Ptr<WindowEvent> & event)
{
	Log::message("\Handling ImmediateWindowEvent event\n");
}


//////////////////////////////////////////////////////////////////////////////
//  1. Multiple subscriptions can be linked to an instance of the EventConnections 
//  class that you can use later to remove all these subscriptions at once
//////////////////////////////////////////////////////////////////////////////

// create an instance of the EventConnections class
EventConnections immediatewindowevent_event_connections;

// link to this instance when subscribing for an event (subscription for various events can be linked)
WindowManager::getEventImmediateWindowEvent().connect(immediatewindowevent_event_connections, immediatewindowevent_event_handler);

// other subscriptions are also linked to this EventConnections instance 
// (e.g. you can subscribe using lambdas)
WindowManager::getEventImmediateWindowEvent().connect(immediatewindowevent_event_connections, [](const Ptr<WindowEvent> & event) { 
		Log::message("\Handling ImmediateWindowEvent event (lambda).\n");
	}
);

// ...

// later all of these linked subscriptions can be removed with a single line
immediatewindowevent_event_connections.disconnectAll();

//////////////////////////////////////////////////////////////////////////////
//  2. You can subscribe and unsubscribe via an instance of the EventConnection 
//  class. And toggle this particular connection off and on, when necessary.
//////////////////////////////////////////////////////////////////////////////

// create an instance of the EventConnection class
EventConnection immediatewindowevent_event_connection;

// subscribe for the ImmediateWindowEvent event with a handler function keeping the connection
WindowManager::getEventImmediateWindowEvent().connect(immediatewindowevent_event_connection, immediatewindowevent_event_handler);

// ...

// you can temporarily disable a particular event connection to perform certain actions
immediatewindowevent_event_connection.setEnabled(false);

// ... actions to be performed

// and enable it back when necessary
immediatewindowevent_event_connection.setEnabled(true);

// ...

// remove subscription for the ImmediateWindowEvent event via the connection
immediatewindowevent_event_connection.disconnect();

//////////////////////////////////////////////////////////////////////////////
//  3. You can add EventConnection/EventConnections instance as a member of the
//  class that handles the event. In this case all linked subscriptions will be 
//  automatically removed when class destructor is called
//////////////////////////////////////////////////////////////////////////////

// Class handling the event
class SomeClass
{
public:
	// instance of the EventConnections class as a class member
	EventConnections e_connections;

	// A ImmediateWindowEvent event handler implemented as a class member
	void event_handler(const Ptr<WindowEvent> & event)
	{
		Log::message("\Handling ImmediateWindowEvent event\n");
		// ...
	}
};

SomeClass *sc = new SomeClass();

// ...

// specify a class instance in case a handler method belongs to some class
WindowManager::getEventImmediateWindowEvent().connect(sc->e_connections, sc, &SomeClass::event_handler);

// ...

// handler class instance is deleted with all its subscriptions removed automatically
delete sc;

//////////////////////////////////////////////////////////////////////////////
//  4. You can subscribe and unsubscribe via the handler function directly
//////////////////////////////////////////////////////////////////////////////

// subscribe for the ImmediateWindowEvent event with a handler function
WindowManager::getEventImmediateWindowEvent().connect(immediatewindowevent_event_handler);


// remove subscription for the ImmediateWindowEvent event later by the handler function
WindowManager::getEventImmediateWindowEvent().disconnect(immediatewindowevent_event_handler);


//////////////////////////////////////////////////////////////////////////////
//   5. Subscribe to an event saving an ID and unsubscribe later by this ID
//////////////////////////////////////////////////////////////////////////////

// define a connection ID to be used to unsubscribe later
EventConnectionId immediatewindowevent_handler_id;

// subscribe for the ImmediateWindowEvent event with a lambda handler function and keeping connection ID
immediatewindowevent_handler_id = WindowManager::getEventImmediateWindowEvent().connect([](const Ptr<WindowEvent> & event) { 
		Log::message("\Handling ImmediateWindowEvent event (lambda).\n");
	}
);

// remove the subscription later using the ID
WindowManager::getEventImmediateWindowEvent().disconnect(immediatewindowevent_handler_id);


//////////////////////////////////////////////////////////////////////////////
//   6. Ignoring all ImmediateWindowEvent events when necessary
//////////////////////////////////////////////////////////////////////////////

// you can temporarily disable the event to perform certain actions without triggering it
WindowManager::getEventImmediateWindowEvent().setEnabled(false);

// ... actions to be performed

// and enable it back when necessary
WindowManager::getEventImmediateWindowEvent().setEnabled(true);

Return value

Event reference.

Event<const Ptr<EngineWindow> &> getEventWindowUnstacked() const#

event triggered after the window has been unstacked. You can subscribe to events via connect()  and unsubscribe via disconnect(). You can also use EventConnection  and EventConnections  classes for convenience (see examples below).
Notice
For more details see the Event Handling article.
The event handler signature is as follows: myhandler(const Ptr<EngineWindow> & window)

Usage Example

Source code (C++)
// implement the WindowUnstacked event handler
void windowunstacked_event_handler(const Ptr<EngineWindow> & window)
{
	Log::message("\Handling WindowUnstacked event\n");
}


//////////////////////////////////////////////////////////////////////////////
//  1. Multiple subscriptions can be linked to an instance of the EventConnections 
//  class that you can use later to remove all these subscriptions at once
//////////////////////////////////////////////////////////////////////////////

// create an instance of the EventConnections class
EventConnections windowunstacked_event_connections;

// link to this instance when subscribing for an event (subscription for various events can be linked)
WindowManager::getEventWindowUnstacked().connect(windowunstacked_event_connections, windowunstacked_event_handler);

// other subscriptions are also linked to this EventConnections instance 
// (e.g. you can subscribe using lambdas)
WindowManager::getEventWindowUnstacked().connect(windowunstacked_event_connections, [](const Ptr<EngineWindow> & window) { 
		Log::message("\Handling WindowUnstacked event (lambda).\n");
	}
);

// ...

// later all of these linked subscriptions can be removed with a single line
windowunstacked_event_connections.disconnectAll();

//////////////////////////////////////////////////////////////////////////////
//  2. You can subscribe and unsubscribe via an instance of the EventConnection 
//  class. And toggle this particular connection off and on, when necessary.
//////////////////////////////////////////////////////////////////////////////

// create an instance of the EventConnection class
EventConnection windowunstacked_event_connection;

// subscribe for the WindowUnstacked event with a handler function keeping the connection
WindowManager::getEventWindowUnstacked().connect(windowunstacked_event_connection, windowunstacked_event_handler);

// ...

// you can temporarily disable a particular event connection to perform certain actions
windowunstacked_event_connection.setEnabled(false);

// ... actions to be performed

// and enable it back when necessary
windowunstacked_event_connection.setEnabled(true);

// ...

// remove subscription for the WindowUnstacked event via the connection
windowunstacked_event_connection.disconnect();

//////////////////////////////////////////////////////////////////////////////
//  3. You can add EventConnection/EventConnections instance as a member of the
//  class that handles the event. In this case all linked subscriptions will be 
//  automatically removed when class destructor is called
//////////////////////////////////////////////////////////////////////////////

// Class handling the event
class SomeClass
{
public:
	// instance of the EventConnections class as a class member
	EventConnections e_connections;

	// A WindowUnstacked event handler implemented as a class member
	void event_handler(const Ptr<EngineWindow> & window)
	{
		Log::message("\Handling WindowUnstacked event\n");
		// ...
	}
};

SomeClass *sc = new SomeClass();

// ...

// specify a class instance in case a handler method belongs to some class
WindowManager::getEventWindowUnstacked().connect(sc->e_connections, sc, &SomeClass::event_handler);

// ...

// handler class instance is deleted with all its subscriptions removed automatically
delete sc;

//////////////////////////////////////////////////////////////////////////////
//  4. You can subscribe and unsubscribe via the handler function directly
//////////////////////////////////////////////////////////////////////////////

// subscribe for the WindowUnstacked event with a handler function
WindowManager::getEventWindowUnstacked().connect(windowunstacked_event_handler);


// remove subscription for the WindowUnstacked event later by the handler function
WindowManager::getEventWindowUnstacked().disconnect(windowunstacked_event_handler);


//////////////////////////////////////////////////////////////////////////////
//   5. Subscribe to an event saving an ID and unsubscribe later by this ID
//////////////////////////////////////////////////////////////////////////////

// define a connection ID to be used to unsubscribe later
EventConnectionId windowunstacked_handler_id;

// subscribe for the WindowUnstacked event with a lambda handler function and keeping connection ID
windowunstacked_handler_id = WindowManager::getEventWindowUnstacked().connect([](const Ptr<EngineWindow> & window) { 
		Log::message("\Handling WindowUnstacked event (lambda).\n");
	}
);

// remove the subscription later using the ID
WindowManager::getEventWindowUnstacked().disconnect(windowunstacked_handler_id);


//////////////////////////////////////////////////////////////////////////////
//   6. Ignoring all WindowUnstacked events when necessary
//////////////////////////////////////////////////////////////////////////////

// you can temporarily disable the event to perform certain actions without triggering it
WindowManager::getEventWindowUnstacked().setEnabled(false);

// ... actions to be performed

// and enable it back when necessary
WindowManager::getEventWindowUnstacked().setEnabled(true);

Return value

Event reference.

Event<const Ptr<EngineWindow> &> getEventWindowStacked() const#

event triggered after the window has been stacked. You can subscribe to events via connect()  and unsubscribe via disconnect(). You can also use EventConnection  and EventConnections  classes for convenience (see examples below).
Notice
For more details see the Event Handling article.
The event handler signature is as follows: myhandler(const Ptr<EngineWindow> & window)

Usage Example

Source code (C++)
// implement the WindowStacked event handler
void windowstacked_event_handler(const Ptr<EngineWindow> & window)
{
	Log::message("\Handling WindowStacked event\n");
}


//////////////////////////////////////////////////////////////////////////////
//  1. Multiple subscriptions can be linked to an instance of the EventConnections 
//  class that you can use later to remove all these subscriptions at once
//////////////////////////////////////////////////////////////////////////////

// create an instance of the EventConnections class
EventConnections windowstacked_event_connections;

// link to this instance when subscribing for an event (subscription for various events can be linked)
WindowManager::getEventWindowStacked().connect(windowstacked_event_connections, windowstacked_event_handler);

// other subscriptions are also linked to this EventConnections instance 
// (e.g. you can subscribe using lambdas)
WindowManager::getEventWindowStacked().connect(windowstacked_event_connections, [](const Ptr<EngineWindow> & window) { 
		Log::message("\Handling WindowStacked event (lambda).\n");
	}
);

// ...

// later all of these linked subscriptions can be removed with a single line
windowstacked_event_connections.disconnectAll();

//////////////////////////////////////////////////////////////////////////////
//  2. You can subscribe and unsubscribe via an instance of the EventConnection 
//  class. And toggle this particular connection off and on, when necessary.
//////////////////////////////////////////////////////////////////////////////

// create an instance of the EventConnection class
EventConnection windowstacked_event_connection;

// subscribe for the WindowStacked event with a handler function keeping the connection
WindowManager::getEventWindowStacked().connect(windowstacked_event_connection, windowstacked_event_handler);

// ...

// you can temporarily disable a particular event connection to perform certain actions
windowstacked_event_connection.setEnabled(false);

// ... actions to be performed

// and enable it back when necessary
windowstacked_event_connection.setEnabled(true);

// ...

// remove subscription for the WindowStacked event via the connection
windowstacked_event_connection.disconnect();

//////////////////////////////////////////////////////////////////////////////
//  3. You can add EventConnection/EventConnections instance as a member of the
//  class that handles the event. In this case all linked subscriptions will be 
//  automatically removed when class destructor is called
//////////////////////////////////////////////////////////////////////////////

// Class handling the event
class SomeClass
{
public:
	// instance of the EventConnections class as a class member
	EventConnections e_connections;

	// A WindowStacked event handler implemented as a class member
	void event_handler(const Ptr<EngineWindow> & window)
	{
		Log::message("\Handling WindowStacked event\n");
		// ...
	}
};

SomeClass *sc = new SomeClass();

// ...

// specify a class instance in case a handler method belongs to some class
WindowManager::getEventWindowStacked().connect(sc->e_connections, sc, &SomeClass::event_handler);

// ...

// handler class instance is deleted with all its subscriptions removed automatically
delete sc;

//////////////////////////////////////////////////////////////////////////////
//  4. You can subscribe and unsubscribe via the handler function directly
//////////////////////////////////////////////////////////////////////////////

// subscribe for the WindowStacked event with a handler function
WindowManager::getEventWindowStacked().connect(windowstacked_event_handler);


// remove subscription for the WindowStacked event later by the handler function
WindowManager::getEventWindowStacked().disconnect(windowstacked_event_handler);


//////////////////////////////////////////////////////////////////////////////
//   5. Subscribe to an event saving an ID and unsubscribe later by this ID
//////////////////////////////////////////////////////////////////////////////

// define a connection ID to be used to unsubscribe later
EventConnectionId windowstacked_handler_id;

// subscribe for the WindowStacked event with a lambda handler function and keeping connection ID
windowstacked_handler_id = WindowManager::getEventWindowStacked().connect([](const Ptr<EngineWindow> & window) { 
		Log::message("\Handling WindowStacked event (lambda).\n");
	}
);

// remove the subscription later using the ID
WindowManager::getEventWindowStacked().disconnect(windowstacked_handler_id);


//////////////////////////////////////////////////////////////////////////////
//   6. Ignoring all WindowStacked events when necessary
//////////////////////////////////////////////////////////////////////////////

// you can temporarily disable the event to perform certain actions without triggering it
WindowManager::getEventWindowStacked().setEnabled(false);

// ... actions to be performed

// and enable it back when necessary
WindowManager::getEventWindowStacked().setEnabled(true);

Return value

Event reference.

Event<const Ptr<EngineWindow> &> getEventWindowRemoved() const#

event triggered after the window has been removed. You can subscribe to events via connect()  and unsubscribe via disconnect(). You can also use EventConnection  and EventConnections  classes for convenience (see examples below).
Notice
For more details see the Event Handling article.
The event handler signature is as follows: myhandler(const Ptr<EngineWindow> & window)

Usage Example

Source code (C++)
// implement the WindowRemoved event handler
void windowremoved_event_handler(const Ptr<EngineWindow> & window)
{
	Log::message("\Handling WindowRemoved event\n");
}


//////////////////////////////////////////////////////////////////////////////
//  1. Multiple subscriptions can be linked to an instance of the EventConnections 
//  class that you can use later to remove all these subscriptions at once
//////////////////////////////////////////////////////////////////////////////

// create an instance of the EventConnections class
EventConnections windowremoved_event_connections;

// link to this instance when subscribing for an event (subscription for various events can be linked)
WindowManager::getEventWindowRemoved().connect(windowremoved_event_connections, windowremoved_event_handler);

// other subscriptions are also linked to this EventConnections instance 
// (e.g. you can subscribe using lambdas)
WindowManager::getEventWindowRemoved().connect(windowremoved_event_connections, [](const Ptr<EngineWindow> & window) { 
		Log::message("\Handling WindowRemoved event (lambda).\n");
	}
);

// ...

// later all of these linked subscriptions can be removed with a single line
windowremoved_event_connections.disconnectAll();

//////////////////////////////////////////////////////////////////////////////
//  2. You can subscribe and unsubscribe via an instance of the EventConnection 
//  class. And toggle this particular connection off and on, when necessary.
//////////////////////////////////////////////////////////////////////////////

// create an instance of the EventConnection class
EventConnection windowremoved_event_connection;

// subscribe for the WindowRemoved event with a handler function keeping the connection
WindowManager::getEventWindowRemoved().connect(windowremoved_event_connection, windowremoved_event_handler);

// ...

// you can temporarily disable a particular event connection to perform certain actions
windowremoved_event_connection.setEnabled(false);

// ... actions to be performed

// and enable it back when necessary
windowremoved_event_connection.setEnabled(true);

// ...

// remove subscription for the WindowRemoved event via the connection
windowremoved_event_connection.disconnect();

//////////////////////////////////////////////////////////////////////////////
//  3. You can add EventConnection/EventConnections instance as a member of the
//  class that handles the event. In this case all linked subscriptions will be 
//  automatically removed when class destructor is called
//////////////////////////////////////////////////////////////////////////////

// Class handling the event
class SomeClass
{
public:
	// instance of the EventConnections class as a class member
	EventConnections e_connections;

	// A WindowRemoved event handler implemented as a class member
	void event_handler(const Ptr<EngineWindow> & window)
	{
		Log::message("\Handling WindowRemoved event\n");
		// ...
	}
};

SomeClass *sc = new SomeClass();

// ...

// specify a class instance in case a handler method belongs to some class
WindowManager::getEventWindowRemoved().connect(sc->e_connections, sc, &SomeClass::event_handler);

// ...

// handler class instance is deleted with all its subscriptions removed automatically
delete sc;

//////////////////////////////////////////////////////////////////////////////
//  4. You can subscribe and unsubscribe via the handler function directly
//////////////////////////////////////////////////////////////////////////////

// subscribe for the WindowRemoved event with a handler function
WindowManager::getEventWindowRemoved().connect(windowremoved_event_handler);


// remove subscription for the WindowRemoved event later by the handler function
WindowManager::getEventWindowRemoved().disconnect(windowremoved_event_handler);


//////////////////////////////////////////////////////////////////////////////
//   5. Subscribe to an event saving an ID and unsubscribe later by this ID
//////////////////////////////////////////////////////////////////////////////

// define a connection ID to be used to unsubscribe later
EventConnectionId windowremoved_handler_id;

// subscribe for the WindowRemoved event with a lambda handler function and keeping connection ID
windowremoved_handler_id = WindowManager::getEventWindowRemoved().connect([](const Ptr<EngineWindow> & window) { 
		Log::message("\Handling WindowRemoved event (lambda).\n");
	}
);

// remove the subscription later using the ID
WindowManager::getEventWindowRemoved().disconnect(windowremoved_handler_id);


//////////////////////////////////////////////////////////////////////////////
//   6. Ignoring all WindowRemoved events when necessary
//////////////////////////////////////////////////////////////////////////////

// you can temporarily disable the event to perform certain actions without triggering it
WindowManager::getEventWindowRemoved().setEnabled(false);

// ... actions to be performed

// and enable it back when necessary
WindowManager::getEventWindowRemoved().setEnabled(true);

Return value

Event reference.

Event<const Ptr<EngineWindow> &> getEventWindowCreated() const#

event triggered after the window has been created. You can subscribe to events via connect()  and unsubscribe via disconnect(). You can also use EventConnection  and EventConnections  classes for convenience (see examples below).
Notice
For more details see the Event Handling article.
The event handler signature is as follows: myhandler(const Ptr<EngineWindow> & window)

Usage Example

Source code (C++)
// implement the WindowCreated event handler
void windowcreated_event_handler(const Ptr<EngineWindow> & window)
{
	Log::message("\Handling WindowCreated event\n");
}


//////////////////////////////////////////////////////////////////////////////
//  1. Multiple subscriptions can be linked to an instance of the EventConnections 
//  class that you can use later to remove all these subscriptions at once
//////////////////////////////////////////////////////////////////////////////

// create an instance of the EventConnections class
EventConnections windowcreated_event_connections;

// link to this instance when subscribing for an event (subscription for various events can be linked)
WindowManager::getEventWindowCreated().connect(windowcreated_event_connections, windowcreated_event_handler);

// other subscriptions are also linked to this EventConnections instance 
// (e.g. you can subscribe using lambdas)
WindowManager::getEventWindowCreated().connect(windowcreated_event_connections, [](const Ptr<EngineWindow> & window) { 
		Log::message("\Handling WindowCreated event (lambda).\n");
	}
);

// ...

// later all of these linked subscriptions can be removed with a single line
windowcreated_event_connections.disconnectAll();

//////////////////////////////////////////////////////////////////////////////
//  2. You can subscribe and unsubscribe via an instance of the EventConnection 
//  class. And toggle this particular connection off and on, when necessary.
//////////////////////////////////////////////////////////////////////////////

// create an instance of the EventConnection class
EventConnection windowcreated_event_connection;

// subscribe for the WindowCreated event with a handler function keeping the connection
WindowManager::getEventWindowCreated().connect(windowcreated_event_connection, windowcreated_event_handler);

// ...

// you can temporarily disable a particular event connection to perform certain actions
windowcreated_event_connection.setEnabled(false);

// ... actions to be performed

// and enable it back when necessary
windowcreated_event_connection.setEnabled(true);

// ...

// remove subscription for the WindowCreated event via the connection
windowcreated_event_connection.disconnect();

//////////////////////////////////////////////////////////////////////////////
//  3. You can add EventConnection/EventConnections instance as a member of the
//  class that handles the event. In this case all linked subscriptions will be 
//  automatically removed when class destructor is called
//////////////////////////////////////////////////////////////////////////////

// Class handling the event
class SomeClass
{
public:
	// instance of the EventConnections class as a class member
	EventConnections e_connections;

	// A WindowCreated event handler implemented as a class member
	void event_handler(const Ptr<EngineWindow> & window)
	{
		Log::message("\Handling WindowCreated event\n");
		// ...
	}
};

SomeClass *sc = new SomeClass();

// ...

// specify a class instance in case a handler method belongs to some class
WindowManager::getEventWindowCreated().connect(sc->e_connections, sc, &SomeClass::event_handler);

// ...

// handler class instance is deleted with all its subscriptions removed automatically
delete sc;

//////////////////////////////////////////////////////////////////////////////
//  4. You can subscribe and unsubscribe via the handler function directly
//////////////////////////////////////////////////////////////////////////////

// subscribe for the WindowCreated event with a handler function
WindowManager::getEventWindowCreated().connect(windowcreated_event_handler);


// remove subscription for the WindowCreated event later by the handler function
WindowManager::getEventWindowCreated().disconnect(windowcreated_event_handler);


//////////////////////////////////////////////////////////////////////////////
//   5. Subscribe to an event saving an ID and unsubscribe later by this ID
//////////////////////////////////////////////////////////////////////////////

// define a connection ID to be used to unsubscribe later
EventConnectionId windowcreated_handler_id;

// subscribe for the WindowCreated event with a lambda handler function and keeping connection ID
windowcreated_handler_id = WindowManager::getEventWindowCreated().connect([](const Ptr<EngineWindow> & window) { 
		Log::message("\Handling WindowCreated event (lambda).\n");
	}
);

// remove the subscription later using the ID
WindowManager::getEventWindowCreated().disconnect(windowcreated_handler_id);


//////////////////////////////////////////////////////////////////////////////
//   6. Ignoring all WindowCreated events when necessary
//////////////////////////////////////////////////////////////////////////////

// you can temporarily disable the event to perform certain actions without triggering it
WindowManager::getEventWindowCreated().setEnabled(false);

// ... actions to be performed

// and enable it back when necessary
WindowManager::getEventWindowCreated().setEnabled(true);

Return value

Event reference.

Ptr<EngineWindowViewport> getFullscreenWindow() const#

Returns the current first engine window viewport that is in the fullscreen state.

Return value

Current The viewport in the fullscreen state, or nullptr if no window is found.

Ptr<EngineWindowViewport> getMainWindow ( ) const#

Returns the window viewport that is set as the main window by default.

Notice
There may be several windows that are set as main, or no main windows at all.

Return value

Engine window viewport.

int getNumWindows ( ) const#

Returns the number of windows.

Return value

The number of windows.

Ptr<EngineWindow> getWindow ( int index ) #

Returns the window by its index.

Arguments

  • int index - Index of the window.

Return value

Engine window.

int getWindowIndex ( const Ptr<EngineWindow> & window ) const#

Returns the index of the specified window.

Arguments

Return value

Index of the window.

Ptr<EngineWindowGroup> stack ( const Ptr<EngineWindow> & first_window, const Ptr<EngineWindow> & second_window, EngineWindowGroup::GROUP_TYPE group_type, int index = -1, bool decompose_second = false ) #

Stacks the window to the other window. If the first argument is the separate window, a new window group is returned. If the first argument is the nested window, the window is added to its group.
Source code (C++)
EngineWindowPtr window_1 = EngineWindowViewport::create("Window 1", 512, 256);
EngineWindowPtr window_2 = EngineWindowViewport::create("Window 2", 512, 256);
EngineWindowPtr window_3 = EngineWindowViewport::create("Window 3", 512, 256);

// create a group of 2 windows
EngineWindowGroupPtr group_1 = WindowManager::stack(window_1, window_2, EngineWindowGroup::GROUP_TYPE_HORIZONTAL);
// stack a separate window to the window from the window group
WindowManager::stack(window_1, window_3, EngineWindowGroup::GROUP_TYPE_VERTICAL);
In the result, group_1 will consist of 3 windows: window_1 and window_3 stacked vertically and window_2 stacked horizontally.

Arguments

  • const Ptr<EngineWindow> & first_window - The parent window to which another window is stacked.
  • const Ptr<EngineWindow> & second_window - The window to be stacked.
  • EngineWindowGroup::GROUP_TYPE group_type - Type of a group to be created.
  • int index
  • bool decompose_second - Flag to decompose the second argument of the merge, if it is a group, and combine with the first group.

Return value

Group of stacked windows.

Ptr<EngineWindowGroup> stackToParentGroup ( const Ptr<EngineWindow> & window_in_group, const Ptr<EngineWindow> & window, int index = -1, bool decompose_second = false ) #

Stacks the second window to the parent window group of the first window. In the result, both windows passed as arguments will be on the same level in the group hierarchy. If the first window has no parent group, the function will return it as is.
Source code (C++)
EngineWindowPtr window_1 = EngineWindowViewport::create("Window 1", 512, 256);
EngineWindowPtr window_2 = EngineWindowViewport::create("Window 2", 512, 256);
EngineWindowPtr window_3 = EngineWindowViewport::create("Window 3", 512, 256);

// stack 2 separate windows
EngineWindowGroupPtr group_0 = WindowManager::stack(window_1, window_2, EngineWindowGroup::GROUP_TYPE_HORIZONTAL);
// stack a separate window to the parent group of "window_1"
WindowManager::stackToParentGroup(window_1, window_3);

Arguments

  • const Ptr<EngineWindow> & window_in_group - The window into the parent group of which the other window is stacked.
  • const Ptr<EngineWindow> & window - The window to be stacked.
  • int index - A place where a window or a group should be placed in a group.
  • bool decompose_second - Flag to decompose the second argument of the merge, if it is a group, and combine with the first window or a group.

Return value

Group of windows.

Ptr<EngineWindowGroup> stackWindows ( const Ptr<EngineWindowViewport> & first_viewport, const Ptr<EngineWindowViewport> & second_viewport, EngineWindowGroup::GROUP_TYPE group_type = Enum.EngineWindowGroup.GROUP_TYPE.TAB ) #

Returns a newly created group of the separate and/or nested windows. You cannot stack the window group to the separate window, however, you can stack a window nested in the window group: in this case, the window will be unstacked from its parent group and added to the new one. The windows are stacked in the default order. For example:
Source code (C++)
EngineWindowViewportPtr window_1 = EngineWindowViewport::create("Window 1", 512, 256);
EngineWindowViewportPtr window_2 = EngineWindowViewport::create("Window 2", 512, 256);
EngineWindowViewportPtr window_3 = EngineWindowViewport::create("Window 3", 512, 256);

// stack 2 separate windows
EngineWindowGroupPtr group_0 = WindowManager::stack(window_1, window_2, EngineWindowGroup::GROUP_TYPE_HORIZONTAL);

// stack a window from the window group to a separate window
EngineWindowGroupPtr group_1 = WindowManager::stackWindows(window_3, window_1, EngineWindowGroup::GROUP_TYPE_VERTICAL);
In the result, group_1 will be a vertical group of window_3 and window_1.

Arguments

Return value

Group of windows.

Ptr<EngineWindowGroup> stackWithWindow ( const Ptr<EngineWindowViewport> & window_viewport, const Ptr<EngineWindow> & window, EngineWindowGroup::GROUP_TYPE group_type, bool decompose_second = false ) #

Returns a newly created group of the engine window viewport and any other engine window — another viewport or a window group.

Arguments

  • const Ptr<EngineWindowViewport> & window_viewport - The window viewport to be stacked.
  • const Ptr<EngineWindow> & window - The window to be stacked.
  • EngineWindowGroup::GROUP_TYPE group_type - Type of a window group to be created.
  • bool decompose_second - Flag to decompose the second argument of the merge, if it is a group, and combine with the first group.

Return value

Group of windows.

Ptr<EngineWindowGroup> stackGroups ( const Ptr<EngineWindowGroup> & first_group, const Ptr<EngineWindowGroup> & second_group, EngineWindowGroup::GROUP_TYPE group_type ) #

Returns the group of window groups. The second group is added to the first group. To combine two windows or a group and a window, use the stack() method.
Source code (C++)
EngineWindowPtr window_1 = EngineWindowViewport::create("Window 1", 512, 256);
EngineWindowPtr window_2 = EngineWindowViewport::create("Window 2", 512, 256);
EngineWindowPtr window_3 = EngineWindowViewport::create("Window 3", 512, 256);
EngineWindowPtr window_4 = EngineWindowViewport::create("Window 4", 512, 256);

// create 2 horizontal groups of windows
EngineWindowGroupPtr group_1 = WindowManager::stack(window_1, window_2, EngineWindowGroup::GROUP_TYPE_HORIZONTAL);
EngineWindowGroupPtr group_2 = WindowManager::stack(window_3, window_4, EngineWindowGroup::GROUP_TYPE_HORIZONTAL);
// stack one group to another to create a new vertical group
EngineWindowGroupPtr group_3 = WindowManager::stackGroups(group_1, group_2, EngineWindowGroup::GROUP_TYPE_VERTICAL);

Arguments

Return value

Group of windows.

Ptr<EngineWindowGroup> stackToGroup ( const Ptr<EngineWindowGroup> & destination_group, const Ptr<EngineWindow> & group, int index = -1, bool decompose_second = false ) #

Stacks the window or window group to another window group. The updated group of windows is returned.
Source code (C++)
EngineWindowPtr window_1 = EngineWindowViewport::create("Window 1", 512, 256);
EngineWindowPtr window_2 = EngineWindowViewport::create("Window 2", 512, 256);
EngineWindowPtr window_3 = EngineWindowViewport::create("Window 3", 512, 256);
EngineWindowPtr window_4 = EngineWindowViewport::create("Window 4", 512, 256);

// create 2 horizontal groups of windows
EngineWindowGroupPtr group_1 = WindowManager::stack(window_1, window_2, EngineWindowGroup::GROUP_TYPE_HORIZONTAL);
EngineWindowGroupPtr group_2 = WindowManager::stack(window_3, window_4, EngineWindowGroup::GROUP_TYPE_HORIZONTAL);

// stack one group to another
WindowManager::stackToGroup(group_1, group_2);

Arguments

  • const Ptr<EngineWindowGroup> & destination_group - The parent group to which another group is stacked.
  • const Ptr<EngineWindow> & group - The window or window group to be stacked.
  • int index - A place where a window or a group should be placed in a group.
  • bool decompose_second - Flag to decompose the second argument of the merge and combine with the first group.

Return value

Group of stacked windows.

void unstack ( const Ptr<EngineWindow> & unstacked ) #

Removes a window or a group from a parent group. If there is only one window left, the group is automatically deleted after removing the window from it.

Arguments

  • const Ptr<EngineWindow> & unstacked - A window or a group to be removed from a parent group.

bool isMultipleWindowsSupported ( ) const#

Returns the value indicating if the engine can create more than one window. In addition to the settings defined by the user, it is currently impossible to create more than one window using Vulkan and DirectX 12. GL and DirectX 11, however, allow creating multiple windows.

Return value

true if multiple windows are supported, otherwise false.

bool isFullscreenMode ( ) const#

Returns the value indicating if at least one engine window is in a fullscreen state.

Return value

true if the window is the fullscreen state, false if it's in the window mode.

bool isFullscreenWindow ( const Ptr<EngineWindow> & window ) #

Returns the value indicating if the specified window is in a fullscreen state.

Arguments

Return value

true if the engine window is the fullscreen state, false if it is in the window mode.

Ptr<EngineWindowViewport> getFullscreenWindow ( ) const#

Returns the first engine window viewport that is in the fullscreen state.

Return value

The viewport in the fullscreen state, or nullptr if no window is found.

Ptr<EngineWindow> getWindowByID ( unsigned long long win_id ) const#

Returns the window by its ID.

Arguments

  • unsigned long long win_id - Window ID.

Return value

Window with the specified ID, or nullptr if the window is not found.

bool dialogMessage ( const char * title, const char * message ) #

Displays a message dialog with the specified title and text.

Arguments

  • const char * title - Title of the message dialog to be displayed.
  • const char * message - Message text to be displayed.

Return value

true if the message is displayed successfully; otherwise, false.

bool dialogWarning ( const char * title, const char * warning ) #

Displays a warning dialog with the specified title and text.

Arguments

  • const char * title - Title of the warning dialog to be displayed.
  • const char * warning - Warning message text to be displayed.

Return value

true if the message is displayed successfully; otherwise, false.

bool dialogError ( const char * title, const char * error ) #

Displays an error dialog with the specified title and text.

Arguments

  • const char * title - Title of the error dialog to be displayed.
  • const char * error - Error message text to be displayed.

Return value

true if the message is displayed successfully; otherwise, false.

int showSystemDialog ( const Ptr<SystemDialog> & dialog ) #

Displays a custom system dialog with an arbitrary set of buttons.

Arguments

Return value

Number of the dialog button clicked by the user; or -1 if an error has occurred.

const char * dialogOpenFolder ( const char * path ) #

Opens a common dialog enabling the user to specify a folder to open. When the dialog opens the specified default path shall be set displaying the corresponding elements.

Arguments

  • const char * path - Path to be set by default when the dialog opens.

Return value

Resulting folder name specified by the user.

const char * dialogOpenFolder ( ) #

Opens a common dialog enabling the user to specify a folder to open.

Return value

Resulting folder name specified by the user.

Vector<String> dialogOpenFiles ( const char * path, const char * filter ) #

Opens a common dialog enabling the user to specify a list of filenames to open multiple files. When the dialog opens the specified default path and file filter shall be set displaying the corresponding elements.

Arguments

  • const char * path - Path to be set by default when the dialog opens.
  • const char * filter - File name filter string to be set by default when the dialog opens. This filter string determines file type choices to be displayed in the Files of type box.

Return value

Resulting list of filenames specified by the user.

Vector<String> dialogOpenFiles ( const char * path ) #

Opens a common dialog enabling the user to specify a list of filenames to open multiple files. When the dialog opens the specified default path shall be set displaying the corresponding elements.

Arguments

  • const char * path - Path to be set by default when the dialog opens.

Return value

Resulting list of filenames specified by the user.

Vector<String> dialogOpenFiles ( ) #

Opens a common dialog enabling the user to specify a list of filenames to open multiple files.

Return value

Resulting list of filenames specified by the user.

const char * dialogOpenFile ( const char * path, const char * filter ) #

Opens a common dialog enabling the user to specify a filename to open a file. When the dialog opens the specified default path and file filter shall be set displaying the corresponding elements.

Arguments

  • const char * path - Path to be set by default when the dialog opens.
  • const char * filter - File name filter string to be set by default when the dialog opens. This filter string determines file type choices to be displayed in the Files of type box.

Return value

Resulting filename specified by the user.

const char * dialogOpenFile ( const char * path ) #

Opens a common dialog enabling the user to specify a filename to open a file. When the dialog opens the specified default path shall be set displaying the corresponding elements.

Arguments

  • const char * path - Path to be set by default when the dialog opens.

Return value

Resulting filename specified by the user.

const char * dialogOpenFile ( ) #

Opens a common dialog enabling the user to specify a filename to open a file.

Return value

Resulting filename specified by the user.

const char * dialogSaveFile ( const char * path, const char * filter ) #

Opens a common dialog enabling the user to specify a filename to save a file as. When the dialog opens the specified default path and file filter shall be set displaying the corresponding elements.

Arguments

  • const char * path - Path to be set by default when the dialog opens.
  • const char * filter - File name filter string to be set by default when the dialog opens. This filter string determines file type choices to be displayed in the Save as file type or Files of type box.

Return value

Resulting filename specified by the user.

const char * dialogSaveFile ( const char * path ) #

Opens a common dialog enabling the user to specify a filename to save a file as. When the dialog opens the specified default path shall be set displaying the corresponding elements.

Arguments

  • const char * path - Path to be set by default when the dialog opens.

Return value

Resulting filename specified by the user.

const char * dialogSaveFile ( ) #

Opens a common dialog enabling the user to specify a filename to save a file as.

Return value

Resulting filename specified by the user.

Ptr<EngineWindow> getUnderCursorWindow ( ) const#

Returns the window which is currently under cursor.

Return value

The window which is currently under cursor.

Ptr<EngineWindowViewport> getFocusedWindow ( ) const#

Returns the window viewport which is currently in focus.

Return value

The window viewport which is currently in focus.

Ptr<EngineWindowViewport> getSystemFocusedWindow ( ) const#

Returns the engine window viewport that has the isSystemFocused() flag enabled, either a window itself or its parent group with the system focus is enabled. If there is no window with such a flag, nullptr is returned.

Return value

The engine window viewport that has the isSystemFocused() flag enabled, or nullptr if there is no such window.

Ptr<EngineWindow> getIntersection ( const Math::ivec2 & global_pos, const Vector<Ptr<EngineWindow>> & excludes ) const#

Returns the window the intersection with which is detected.

Arguments

  • const Math::ivec2 & global_pos - The position of the intersection point in global coordinates.
  • const Vector<Ptr<EngineWindow>> & excludes - The windows to be excluded from the intersection detection.

Return value

The window the intersection with which is detected.

Ptr<EngineWindow> getIntersection ( const Math::ivec2 & global_pos ) const#

Returns the window the intersection with which is detected.

Arguments

  • const Math::ivec2 & global_pos - The position of the intersection point in global coordinates.

Return value

The window the intersection with which is detected.

void forceUpdateWindowOrders ( ) #

Updates the Z order of all windows.
Notice
It is recommended to use this method only when required, because it is very slow.

void setEventsFilter ( int (*)(const Ptr<InputEvent> &) func ) #

Sets a callback function to be executed on receiving input events. This input event filter enables you to reject certain input events for the Engine and get necessary information on all input events.

Arguments

WindowManager::DPI_AWARENESS getDpiAwareness ( ) const#

Returns the DPI awareness mode, the value indicating how the application processes the DPI scaling. The value is set to PER_MONITOR_AWARE by default. On Windows, if a specified mode cannot be set, it will switch to a possible lower value with a corresponding warning. On Linux, PER_MONITOR_AWARE is currently not supported, setting this value will switch the mode to the SYSTEM_AWARE mode with the corresponding warning in the console.
Notice
This value is stored in the boot config file and can be changed only at the application startup. It cannot be changed at runtime, thus at an attempt to change the value the console will show the corresponding warning.

Return value

The DPI awareness mode, the value indicating how the application processes the DPI scaling.

WindowManager::DPI_AWARENESS getCurrentDpiAwareness ( ) const#

Returns the current actual DPI awareness mode, the value indicating how the application processes the DPI scaling. The value is set to PER_MONITOR_AWARE by default. On Windows, if a specified mode cannot be set, it will switch to a possible lower value with a corresponding warning. On Linux, PER_MONITOR_AWARE is currently not supported, setting this value will switch the mode to the SYSTEM_AWARE mode with the corresponding warning in the console.
Notice
This is an actual value, it may differ from the mode stored in the boot config file (in case the system cannot set the specified mode it will try to use the one that is suitable instead).
This parameter is stored in the following configuration file: *..boot.

Return value

Current actual DPI awareness mode, the value indicating how the application processes the DPI scaling.

bool isAutoDpiScaling ( ) const#

Returns the value specifying if automatic DPI scaling is applied to the window. If automatic DPI scaling is disabled, all GUI elements have the 100% size, only the system window size is scaled.
Notice
This value is stored in the boot config file and can be changed only at the application startup. It cannot be changed at runtime, thus at an attempt to change the value the console will show the corresponding warning.

Return value

true if all GUI elements of the window are scaled; otherwise, false.
Last update: 06.02.2024
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