Base class for OpenGL widgets, compatble with Qt and globjects/glbindings. More...

#include <Gui/Viewer/WindowQt.hpp>

Inheritance diagram for Ra::Gui::WindowQt:

Collaboration diagram for Ra::Gui::WindowQt:

Public Slots
void	cleanupGL ()
	call deinitializeGL if needed, with context activated

void	screenChanged ()

Signals
void	dpiChanged ()
	Emitted when physical device changes. Useful for tracking devicePixelRatio() change.

Public Member Functions
	WindowQt (QScreen *screen)

void	resizeEvent (QResizeEvent *event) override

void	showEvent (QShowEvent *event) override

void	exposeEvent (QExposeEvent *event) override

virtual void	enterEvent (QEvent *event)
	paintgl is done by main rendering loop

virtual void	leaveEvent (QEvent *event)

void	makeCurrent ()

void	doneCurrent ()

ScopedGLContext	activateScopedContext ()

QOpenGLContext *	context ()

bool	isOpenGlInitialized () const

Protected Member Functions
void	initialize ()

void	resizeInternal (QResizeEvent *event)

virtual bool	initializeGL ()
	Initialize the openGL related part of the Window. More...

virtual void	deinitializeGL ()
	DeInitialize the OpenGL.

virtual void	resizeGL (QResizeEvent *event)
	Resize the OpenGL related part of the Window.

Static Protected Member Functions
static glbinding::ProcAddress	getProcAddress (const char *name)

Protected Attributes
std::unique_ptr< QOpenGLContext >	m_context

bool	m_updatePending

std::atomic_bool	m_glInitialized

Detailed Description

Base class for OpenGL widgets, compatble with Qt and globjects/glbindings.

Note: This class has been extracted from globjects example https://github.com/cginternals/globjects/blob/master/source/examples/qtexample/WindowQt.h

Definition at line 27 of file WindowQt.hpp.

Member Function Documentation

◆ activateScopedContext()

WindowQt::ScopedGLContext Ra::Gui::WindowQt::activateScopedContext ( )

inline

Make this->context() the current context for current block. The context is released when the return variable is destroyed. The "context object" uses this->makeCurrent() and this->doneCurrent(), hence it's compatible with enclosed scopes, and only the first created context object dtor eventually release OpenGL context.

Example

 if(test){
    auto context = viewer->activateScopedContext();
    // here OpenGL context is bound
    Texture tex;
    // [...] do tex setup
    tex->initializeGL();
    // [...] use tex ...
} // block exit will first call tex dtor (with active context) then context dtor.

Definition at line 154 of file WindowQt.hpp.

◆ context()

QOpenGLContext * Ra::Gui::WindowQt::context ( )

See also: https://doc.qt.io/qt-5/qglwidget.html#context

Definition at line 76 of file WindowQt.cpp.

◆ doneCurrent()

void Ra::Gui::WindowQt::doneCurrent ( )

Release this->context(). This results in no context being current in the current thread. In case a context has been made current multiple times, this function just deacrease the internal counter by one.

See also: makeCurrent(); activateScopedContext() as an alternative

Definition at line 89 of file WindowQt.cpp.

◆ initializeGL()

bool Ra::Gui::WindowQt::initializeGL ( )

protectedvirtual

Initialize the openGL related part of the Window.

paint is done by main rendering loop, initialize instead

Reimplemented in Ra::Gui::Viewer.

Definition at line 154 of file WindowQt.cpp.

◆ makeCurrent()

void Ra::Gui::WindowQt::makeCurrent ( )

Make this->context() the current context. This function is made reentrant thanks to an internal counter that count how many time the context has been asked to be activated. If the context have already been made current with a previous call to makeCurrent, this function increase an internal counter by one so that doneCurrent do not release the context.

See also: activateScopedContext() as an alternative

Definition at line 80 of file WindowQt.cpp.

The documentation for this class was generated from the following files:

/home/runner/work/Radium-Engine/Radium-Engine/src/Radium-Engine/src/Gui/Viewer/WindowQt.hpp
/home/runner/work/Radium-Engine/Radium-Engine/src/Radium-Engine/src/Gui/Viewer/WindowQt.cpp

Public Slots

Signals

Public Member Functions

Protected Member Functions

Static Protected Member Functions