omni::ui::InputPreview Class Reference

GLView for visualizing an input. More...

#include <InputPreview.h>

Inheritance diagram for omni::ui::InputPreview:

Collaboration diagram for omni::ui::InputPreview:

Public Slots
void	setBorder (float)
	Set relative border distance. More...
Public Slots inherited from omni::ui::GLView
void	triggerUpdate ()
void	paintGLDone ()

Signals
void	inputChanged ()

Public Member Functions
	InputPreview (QWidget *=nullptr)
	InputPreview (input::Interface *_input, QWidget *=nullptr)
	~InputPreview ()
float	border () const
	Return relative border value. More...
input::Interface *	input ()
	Return pointer to input. More...
input::Interface const *	input () const
	Return pointer to input (const version) More...
void	setInput (input::Interface *)
	Set pointer to input. More...
QPointF	screenPos (QPointF const &_pos) const
	Transforms mouse position on widget to normalized position on input Position in range (0.0,0.0) and (1.0,1.0) More...
Public Member Functions inherited from omni::ui::GLView
	GLView (QWidget *_parent=nullptr)
virtual	~GLView ()
float	aspect () const
	Return aspect ratio of widget. More...
QPointF	mousePosition () const
	Return mouse position. More...
bool	initialized () const
	Return boolean value if widget has been initialized. More...
float	updateFrequency () const
	Return update frequency. More...
void	setUpdateFrequency (float _updateFrequency)
	Return update frequency. More...

Protected Member Functions
void	paintGL ()
	Paint GL routine. More...
void	showEvent (QShowEvent *)
Protected Member Functions inherited from omni::ui::GLView
void	initializeGL ()
	Initialize OpenGL contents. More...
virtual void	resizeGL (int _w, int _h)
	Resize GL and viewport. More...
virtual void	mousePressEvent (QMouseEvent *)
	Mouse press event sets mouse position. More...
void	timerEvent (QTimerEvent *)
void	paintGLReady ()

Private Member Functions
QRectF	viewRect () const
	Return view rect. More...
bool	initialize ()
	Pure virtual function to initialize GL contents. More...

Private Attributes
float	border_ = 0.0
	Relative border. More...
std::unique_ptr < QOpenGLShaderProgram >	shader_
input::Interface *	input_ = nullptr

Additional Inherited Members
Protected Attributes inherited from omni::ui::GLView
bool	updateTriggered_ = false
QPointF	mousePosition_
	Mouse position stored. More...

Detailed Description

GLView for visualizing an input.

Constructor & Destructor Documentation

omni::ui::InputPreview::InputPreview

(

QWidget *

_parent = nullptr

)

                                               :
      GLView(_parent)
    {
      setUpdateFrequency(25.0);
    }

omni::ui::InputPreview::InputPreview	(	input::Interface *	_input,
		QWidget *	_parent = nullptr
	)

                                                                       :
      GLView(_parent),
      input_(_input) {
      input_->update();
      setUpdateFrequency(25.0);
    }

omni::ui::InputPreview::~InputPreview

(

)

    {}

Member Function Documentation

float omni::ui::InputPreview::border

(

)

const

Return relative border value.

    {
      return border_;
    }

bool omni::ui::InputPreview::initialize ( )

privatevirtual

Pure virtual function to initialize GL contents.

Implements omni::ui::GLView.

    {
      makeCurrent();
      return context() != nullptr;
    }

input::Interface * omni::ui::InputPreview::input

(

)

Return pointer to input.

    {
      return input_;
    }

input::Interface const * omni::ui::InputPreview::input

(

)

const

Return pointer to input (const version)

    {
      return input_;
    }

void omni::ui::InputPreview::inputChanged ( )

signal

void omni::ui::InputPreview::paintGL ( )

protectedvirtual

Paint GL routine.

Setup orthogonal projection

Reimplemented from omni::ui::GLView.

    {
      if (!input() || !isVisible()) return;

      makeCurrent();

      if (!shader_) {
        primaryContextSwitch([&](QOpenGLFunctions& _) {
          visual::initShader(shader_,"textureRect");
        });
      }

      withCurrentContext([this](QOpenGLFunctions& _)
      {
        _.glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
        auto _rect = viewRect();

        visual::viewport(this);

        /// Setup orthogonal projection
        glMatrixMode(GL_PROJECTION);
        {
          glLoadIdentity();
          QMatrix4x4 _m;
          _m.ortho(_rect.left(), _rect.right(), _rect.top(), _rect.bottom(), -1.0,
                   1.0);
          glMultMatrixf(_m.constData());
        }

        glMatrixMode(GL_MODELVIEW);
        glLoadIdentity();

        shader_->bind();
        _.glBindTexture(GL_TEXTURE_RECTANGLE, input_->textureId());
        visual::Rectangle::draw(input_->size());
        _.glBindTexture(GL_TEXTURE_RECTANGLE, 0);
        shader_->release();
      });

      paintGLDone();
    }

QPointF omni::ui::InputPreview::screenPos

(

QPointF const &

_pos

)

const

Transforms mouse position on widget to normalized position on input Position in range (0.0,0.0) and (1.0,1.0)

    {
      QRectF && _rect = viewRect();
      QPointF _p = QPointF(_pos.x() / width(), _pos.y() / height());
      return QPointF(_p.x() * _rect.width(), -_p.y() * _rect.height());
    }

void omni::ui::InputPreview::setBorder ( float  _border )

slot

Set relative border distance.

    {
      border_ = _border;
      update();
    }

void omni::ui::InputPreview::setInput

(

input::Interface *

_input

)

Set pointer to input.

                                                      {
      input_ = _input;
      makeCurrent();
    }

void omni::ui::InputPreview::showEvent ( QShowEvent *  )

protected

                                            {
      if (!input()) return;

      input_->update();
      update();
      makeCurrent();
    }

QRectF omni::ui::InputPreview::viewRect ( ) const

private

Return view rect.

    {
      if (!input()) return QRectF(0.0, 0.0, 1.0, 1.0);

      return visual::util::viewRect(input()->width(), input()->height(),
                                    width(), height(), border_);
    }

Field Documentation

float omni::ui::InputPreview::border_ = 0.0

private

Relative border.

input::Interface* omni::ui::InputPreview::input_ = nullptr

private

std::unique_ptr<QOpenGLShaderProgram> omni::ui::InputPreview::shader_

private

---

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

• include/omni/ui/InputPreview.h
• src/lib/ui/InputPreview.cpp