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opencv/modules/highgui/src/window_QT.cpp

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//IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
// By downloading, copying, installing or using the software you agree to this license.
// If you do not agree to this license, do not download, install,
// copy or use the software.
// License Agreement
// For Open Source Computer Vision Library
//Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
//Copyright (C) 2008-2010, Willow Garage Inc., all rights reserved.
//Third party copyrights are property of their respective owners.
//Redistribution and use in source and binary forms, with or without modification,
//are permitted provided that the following conditions are met:
// * Redistribution's of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// * Redistribution's in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
// * The name of the copyright holders may not be used to endorse or promote products
// derived from this software without specific prior written permission.
//This software is provided by the copyright holders and contributors "as is" and
//any express or implied warranties, including, but not limited to, the implied
//warranties of merchantability and fitness for a particular purpose are disclaimed.
//In no event shall the Intel Corporation or contributors be liable for any direct,
//indirect, incidental, special, exemplary, or consequential damages
//(including, but not limited to, procurement of substitute goods or services;
//loss of use, data, or profits; or business interruption) however caused
//and on any theory of liability, whether in contract, strict liability,
//or tort (including negligence or otherwise) arising in any way out of
//the use of this software, even if advised of the possibility of such damage.
//--------------------Google Code 2010 -- Yannick Verdie--------------------//
#if defined(HAVE_QT)
#include <window_QT.h>
#include <math.h>
#ifdef _WIN32
#include <windows.h>
#define usleep Sleep
#endif
#ifndef M_PI
#define M_PI 3.14159265358979323846
#endif
//Static and global first
static GuiReceiver *guiMainThread = NULL;
static int parameterSystemC = 1;
static char* parameterSystemV[] = {(char*)""};
static bool multiThreads = false;
static int last_key = -1;
QWaitCondition key_pressed;
QMutex mutexKey;
static const unsigned int threshold_zoom_img_region = 30;
//the minimum zoom value to start displaying the values in the grid
//that is also the number of pixel per grid
static CvWinProperties* global_control_panel = NULL;
//end static and global
CV_IMPL CvFont cvFontQt(const char* nameFont, int pointSize,CvScalar color,int weight,int style, int spacing)
{
/*
//nameFont <- only Qt
//CvScalar color <- only Qt (blue_component, green_component, red\_component[, alpha_component])
int font_face;//<- style in Qt
const int* ascii;
const int* greek;
const int* cyrillic;
float hscale, vscale;
float shear;
int thickness;//<- weight in Qt
float dx;//spacing letter in Qt (0 default) in pixel
int line_type;//<- pointSize in Qt
*/
CvFont f = {nameFont,color,style,NULL,NULL,NULL,0,0,0,weight,spacing,pointSize};
return f;
}
CV_IMPL void cvAddText(const CvArr* img, const char* text, CvPoint org, CvFont* font)
{
if (!guiMainThread)
CV_Error( CV_StsNullPtr, "NULL guiReceiver (please create a window)" );
QMetaObject::invokeMethod(guiMainThread,
"putText",
Qt::AutoConnection,
Q_ARG(void*, (void*) img),
Q_ARG(QString,QString(text)),
Q_ARG(QPoint, QPoint(org.x,org.y)),
Q_ARG(void*,(void*) font));
}
double cvGetRatioWindow_QT(const char* name)
{
if (!guiMainThread)
CV_Error( CV_StsNullPtr, "NULL guiReceiver (please create a window)" );
double result = -1;
QMetaObject::invokeMethod(guiMainThread,
"getRatioWindow",
//Qt::DirectConnection,
Qt::AutoConnection,
Q_RETURN_ARG(double, result),
Q_ARG(QString, QString(name)));
return result;
}
void cvSetRatioWindow_QT(const char* name,double prop_value)
{
if (!guiMainThread)
CV_Error( CV_StsNullPtr, "NULL guiReceiver (please create a window)" );
QMetaObject::invokeMethod(guiMainThread,
"setRatioWindow",
Qt::AutoConnection,
Q_ARG(QString, QString(name)),
Q_ARG(double, prop_value));
}
double cvGetPropWindow_QT(const char* name)
{
if (!guiMainThread)
CV_Error( CV_StsNullPtr, "NULL guiReceiver (please create a window)" );
double result = -1;
QMetaObject::invokeMethod(guiMainThread,
"getPropWindow",
//Qt::DirectConnection,
Qt::AutoConnection,
Q_RETURN_ARG(double, result),
Q_ARG(QString, QString(name)));
return result;
}
void cvSetPropWindow_QT(const char* name,double prop_value)
{
if (!guiMainThread)
CV_Error( CV_StsNullPtr, "NULL guiReceiver (please create a window)" );
QMetaObject::invokeMethod(guiMainThread,
"setPropWindow",
Qt::AutoConnection,
Q_ARG(QString, QString(name)),
Q_ARG(double, prop_value));
}
void cvSetModeWindow_QT(const char* name, double prop_value)
{
if (!guiMainThread)
CV_Error( CV_StsNullPtr, "NULL guiReceiver (please create a window)" );
QMetaObject::invokeMethod(guiMainThread,
"toggleFullScreen",
Qt::AutoConnection,
Q_ARG(QString, QString(name)),
Q_ARG(double, prop_value));
}
double cvGetModeWindow_QT(const char* name)
{
if (!guiMainThread)
CV_Error( CV_StsNullPtr, "NULL guiReceiver (please create a window)" );
double result = -1;
QMetaObject::invokeMethod(guiMainThread,
"isFullScreen",
Qt::AutoConnection,
Q_RETURN_ARG(double, result),
Q_ARG(QString, QString(name)));
return result;
}
CV_IMPL void cvDisplayOverlay(const char* name, const char* text, int delayms)
{
if (!guiMainThread)
CV_Error( CV_StsNullPtr, "NULL guiReceiver (please create a window)" );
QMetaObject::invokeMethod(guiMainThread,
"displayInfo",
Qt::AutoConnection,
//Qt::DirectConnection,
Q_ARG(QString, QString(name)),
Q_ARG(QString, QString(text)),
Q_ARG(int, delayms));
}
CV_IMPL void cvSaveWindowParameters(const char* name)
{
if (!guiMainThread)
CV_Error( CV_StsNullPtr, "NULL guiReceiver (please create a window)" );
QMetaObject::invokeMethod(guiMainThread,
"saveWindowParameters",
Qt::AutoConnection,
Q_ARG(QString, QString(name)));
}
CV_IMPL void cvLoadWindowParameters(const char* name)
{
if (!guiMainThread)
CV_Error( CV_StsNullPtr, "NULL guiReceiver (please create a window)" );
QMetaObject::invokeMethod(guiMainThread,
"loadWindowParameters",
Qt::AutoConnection,
Q_ARG(QString, QString(name)));
}
CV_IMPL void cvDisplayStatusBar(const char* name, const char* text, int delayms)
{
if (!guiMainThread)
CV_Error( CV_StsNullPtr, "NULL guiReceiver (please create a window)" );
QMetaObject::invokeMethod(guiMainThread,
"displayStatusBar",
Qt::AutoConnection,
//Qt::DirectConnection,
Q_ARG(QString, QString(name)),
Q_ARG(QString, QString(text)),
Q_ARG(int, delayms));
}
CV_IMPL int cvWaitKey( int arg )
{
int result = -1;
if (!guiMainThread)
return result;
unsigned long delayms;//in milliseconds
if (arg<=0)
delayms = ULONG_MAX;
else
delayms = arg;
if (multiThreads)
{
mutexKey.lock();
if(key_pressed.wait(&mutexKey,delayms))//false if timeout
{
result = last_key;
}
last_key = -1;
mutexKey.unlock();
}else{
//cannot use wait here because events will not be distributed before processEvents (the main eventLoop is broken)
//so I create a Thread for the QTimer
if (arg>0)
guiMainThread->timer->start(arg);
//QMutex dummy;
while(!guiMainThread->_bTimeOut)
{
qApp->processEvents(QEventLoop::AllEvents);
if (!guiMainThread)//when all the windows are deleted
return result;
mutexKey.lock();
if (last_key != -1)
{
result = last_key;
last_key = -1;
guiMainThread->timer->stop();
//printf("keypressed\n");
}
mutexKey.unlock();
if (result!=-1)
{
break;
}
else
{
/*
* //will not work, I broke the event loop !!!!
dummy.lock();
QWaitCondition waitCondition;
waitCondition.wait(&dummy, 2);
*/
//to decrease CPU usage
//sleep 1 millisecond
#if defined WIN32 || defined _WIN32 || defined WIN64 || defined _WIN64
Sleep(1);
#else
usleep(1000);
#endif
}
}
guiMainThread->_bTimeOut = false;
}
return result;
}
//Yannick Verdie
//This function is experimental and some functions (such as cvSet/getWindowProperty will not work)
//We recommend not using this function for now
CV_IMPL int cvStartLoop(int (*pt2Func)(int argc, char *argv[]), int argc, char* argv[])
{
multiThreads = true;
QFuture<int> future = QtConcurrent::run(pt2Func,argc,argv);
return guiMainThread->start();
}
CV_IMPL void cvStopLoop()
{
qApp->exit();
}
CvWindow* icvFindWindowByName( const char* arg )
{
QPointer<CvWindow> window;
if( !arg )
CV_Error( CV_StsNullPtr, "NULL name string" );
QString name(arg);
CvWindow* w;
CvWinModel* temp;
//This is not a very clean way to do the stuff. Indeed, QAction automatically generate toolTil (QLabel)
//that can be grabbed here and crash the code at 'w->param_name==name'.
foreach (QWidget *widget, QApplication::topLevelWidgets())
{
if (widget->isWindow() && !widget->parentWidget ())//is a window without parent
{
temp = (CvWinModel*) widget;
if (temp->type == type_CvWindow)
{
w = (CvWindow*) temp;
if (name.compare(w->param_name)==0)
{
window = w;
break;
}
}
}
}
return window;
}
CvBar* icvFindBarbyName(QBoxLayout* layout, QString name_bar, typeBar type)
{
if (!layout)
return NULL;
CvBar* t;
int stop_index = layout->layout()->count();
for (int i = 0; i < stop_index; ++i)
{
t = (CvBar*) layout->layout()->itemAt(i);
if (t->type == type && t->name_bar == name_bar)
return t;
}
return NULL;
}
CvTrackbar* icvFindTrackbarByName( const char* name_trackbar, const char* name_window, QBoxLayout* layout = NULL )
{
QString nameQt(name_trackbar);
CvBar* result = NULL;
if (!name_window && global_control_panel)//window name is null and we have a control panel
layout = global_control_panel->myLayout;
if (!layout)
{
QPointer<CvWindow> w = icvFindWindowByName( name_window );
if( !w )
CV_Error( CV_StsNullPtr, "NULL window handler" );
if ( w->param_gui_mode == CV_GUI_NORMAL)
return (CvTrackbar*) icvFindBarbyName( w->myBarLayout, nameQt, type_CvTrackbar);
if ( w->param_gui_mode == CV_GUI_EXPANDED)
{
result = icvFindBarbyName( w->myBarLayout, nameQt, type_CvTrackbar);
if (result)
return (CvTrackbar*) result;
return (CvTrackbar*) icvFindBarbyName(global_control_panel->myLayout, nameQt, type_CvTrackbar);
}
return NULL;
}else
//layout was specified
{
return (CvTrackbar*) icvFindBarbyName( layout, nameQt, type_CvTrackbar);
}
}
CvButtonbar* icvFindButtonbarByName( const char* button_name,QBoxLayout* layout)
{
QString nameQt(button_name);
return (CvButtonbar*) icvFindBarbyName( layout, nameQt, type_CvButtonbar);
}
int icvInitSystem(int *c, char** v)
{
//"For any GUI application using Qt, there is precisely one QApplication object"
if(!QApplication::instance())
{
new QApplication(*c,v);
qDebug()<<"init done";
#if defined( HAVE_QT_OPENGL )
qDebug()<<"opengl support available";
#endif
}
return 0;
}
CV_IMPL int cvInitSystem( int, char** )
{
icvInitSystem(&parameterSystemC, parameterSystemV);
return 0;
}
CV_IMPL int cvNamedWindow( const char* name, int flags )
{
if (!guiMainThread)
guiMainThread = new GuiReceiver;
if (multiThreads)
QMetaObject::invokeMethod(guiMainThread,
"createWindow",
Qt::BlockingQueuedConnection,
Q_ARG(QString, QString(name)),
Q_ARG(int, flags));
else
guiMainThread->createWindow(QString(name),flags);
return 1;//Dummy value
}
CV_IMPL void cvDestroyWindow( const char* name )
{
if (!guiMainThread)
CV_Error( CV_StsNullPtr, "NULL guiReceiver (please create a window)" );
QMetaObject::invokeMethod(guiMainThread,
"destroyWindow",
//Qt::BlockingQueuedConnection,
Qt::AutoConnection,
Q_ARG(QString, QString(name))
);
}
CV_IMPL void cvDestroyAllWindows(void)
{
if (!guiMainThread)
CV_Error( CV_StsNullPtr, "NULL guiReceiver (please create a window)" );
QMetaObject::invokeMethod(guiMainThread,
"destroyAllWindow",
//Qt::BlockingQueuedConnection,
Qt::AutoConnection
);
}
CV_IMPL void* cvGetWindowHandle( const char* name )
{
if( !name )
CV_Error( CV_StsNullPtr, "NULL name string" );
return (void*) icvFindWindowByName( name );
}
CV_IMPL const char* cvGetWindowName( void* window_handle )
{
if( !window_handle )
CV_Error( CV_StsNullPtr, "NULL window handler" );
return ((CvWindow*)window_handle)->windowTitle().toLatin1().data();
}
CV_IMPL void cvMoveWindow( const char* name, int x, int y )
{
if (!guiMainThread)
CV_Error( CV_StsNullPtr, "NULL guiReceiver (please create a window)" );
QMetaObject::invokeMethod(guiMainThread,
"moveWindow",
//Qt::BlockingQueuedConnection,
Qt::AutoConnection,
Q_ARG(QString, QString(name)),
Q_ARG(int, x),
Q_ARG(int, y)
);
}
CV_IMPL void cvResizeWindow(const char* name, int width, int height )
{
if (!guiMainThread)
CV_Error( CV_StsNullPtr, "NULL guiReceiver (please create a window)" );
QMetaObject::invokeMethod(guiMainThread,
"resizeWindow",
//Qt::BlockingQueuedConnection,
Qt::AutoConnection,
Q_ARG(QString, QString(name)),
Q_ARG(int, width),
Q_ARG(int, height)
);
}
CV_IMPL int cvCreateTrackbar2( const char* name_bar, const char* window_name, int* val, int count, CvTrackbarCallback2 on_notify, void* userdata )
{
if (!guiMainThread)
CV_Error( CV_StsNullPtr, "NULL guiReceiver (please create a window)" );
QMetaObject::invokeMethod(guiMainThread,
"addSlider2",
Qt::AutoConnection,
Q_ARG(QString, QString(name_bar)),
Q_ARG(QString, QString(window_name)),
Q_ARG(void*, (void*)val),
Q_ARG(int, count),
Q_ARG(void*, (void*)on_notify),
Q_ARG(void*, (void*)userdata)
);
return 1;//dummy value
}
CV_IMPL int cvStartWindowThread()
{
return 0;
}
CV_IMPL int cvCreateTrackbar( const char* name_bar, const char* window_name, int* value, int count, CvTrackbarCallback on_change)
{
if (!guiMainThread)
CV_Error( CV_StsNullPtr, "NULL guiReceiver (please create a window)" );
QMetaObject::invokeMethod(guiMainThread,
"addSlider",
Qt::AutoConnection,
Q_ARG(QString, QString(name_bar)),
Q_ARG(QString, QString(window_name)),
Q_ARG(void*, (void*)value),
Q_ARG(int, count),
Q_ARG(void*, (void*)on_change)
);
return 1;//dummy value
}
CV_IMPL int cvCreateButton(const char* button_name,CvButtonCallback on_change, void* userdata , int button_type, int initial_button_state )
{
if (!guiMainThread)
CV_Error( CV_StsNullPtr, "NULL guiReceiver (please create a window)" );
if (initial_button_state < 0 || initial_button_state > 1)
return 0;
QMetaObject::invokeMethod(guiMainThread,
"addButton",
Qt::AutoConnection,
Q_ARG(QString, QString(button_name)),
Q_ARG(int, button_type),
Q_ARG(int, initial_button_state),
Q_ARG(void*, (void*)on_change),
Q_ARG(void*, userdata)
);
return 1;//dummy value
}
CV_IMPL void cvCreateOpenGLCallback( const char* window_name, CvOpenGLCallback callbackOpenGL, void* userdata, double angle, double zmin, double zmax)
{
if (!guiMainThread)
CV_Error( CV_StsNullPtr, "NULL guiReceiver (please create a window)" );
QMetaObject::invokeMethod(guiMainThread,
"setOpenGLCallback",
Qt::AutoConnection,
Q_ARG(QString, QString(window_name)),
Q_ARG(void*, (void*)callbackOpenGL),
Q_ARG(void*, userdata),
Q_ARG(double, angle),
Q_ARG(double, zmin),
Q_ARG(double, zmax)
);
}
CV_IMPL int cvGetTrackbarPos( const char* name_bar, const char* window_name )
{
int result = -1;
QPointer<CvTrackbar> t = icvFindTrackbarByName( name_bar, window_name );
if (t)
result = t->slider->value();
return result;
}
CV_IMPL void cvSetTrackbarPos( const char* name_bar, const char* window_name, int pos )
{
QPointer<CvTrackbar> t = icvFindTrackbarByName( name_bar, window_name );
if (t)
t->slider->setValue(pos);
}
/* assign callback for mouse events */
CV_IMPL void cvSetMouseCallback( const char* window_name, CvMouseCallback on_mouse,void* param )
{
QPointer<CvWindow> w = icvFindWindowByName( window_name );
if (!w)
CV_Error(CV_StsNullPtr, "NULL window handler" );
w->setMouseCallBack(on_mouse, param);
}
CV_IMPL void cvShowImage( const char* name, const CvArr* arr )
{
if (!guiMainThread)
guiMainThread = new GuiReceiver;
QMetaObject::invokeMethod(guiMainThread,
"showImage",
//Qt::BlockingQueuedConnection,
Qt::DirectConnection,
Q_ARG(QString, QString(name)),
Q_ARG(void*, (void*)arr)
);
}
//----------OBJECT----------------
GuiReceiver::GuiReceiver() : _bTimeOut(false), nb_windows(0)
{
doesExternalQAppExist = (QApplication::instance() != 0);
icvInitSystem(&parameterSystemC, parameterSystemV);
timer = new QTimer;
QObject::connect(timer, SIGNAL(timeout()), this, SLOT(timeOut()));
timer->setSingleShot(true);
}
void GuiReceiver::isLastWindow()
{
if (--nb_windows <= 0)
{
delete guiMainThread;//delete global_control_panel too
guiMainThread = NULL;
if(!doesExternalQAppExist)
{
qApp->quit();
}
}
}
GuiReceiver::~GuiReceiver()
{
if (global_control_panel)
{
delete global_control_panel;
global_control_panel = NULL;
}
delete timer;
}
void GuiReceiver::putText(void* arr, QString text, QPoint org, void* arg2)
{
CV_Assert(arr);
CvMat * mat, stub;
int origin=0;
if( CV_IS_IMAGE_HDR( arr ))
origin = ((IplImage*)arr)->origin;
mat = cvGetMat(arr, &stub);
int nbChannelOriginImage = cvGetElemType(mat);
if (nbChannelOriginImage!=CV_8UC3) return;//for now, font works only with 8UC3
//CvMat* image2Draw_mat = cvCreateMat( mat->rows, mat->cols, CV_8UC3 );
QImage qimg = QImage(mat->data.ptr, mat->cols,mat->rows, mat->step,QImage::Format_RGB888);
//IplImage* img = (IplImage*)arg1;
//for now, only support QImage::Format_RGB888
//if (img->depth !=IPL_DEPTH_8U || img->nChannels != 3)
// return;
CvFont* font = (CvFont*)arg2;
//QImage qimg((uchar*) img->imageData, img->width, img->height,QImage::Format_RGB888);
QPainter qp(&qimg);
if (font)
{
QFont f(font->nameFont, font->line_type/*PointSize*/, font->thickness/*weight*/);
f.setStyle((QFont::Style)font->font_face/*style*/);
f.setLetterSpacing ( QFont::AbsoluteSpacing, font->dx/*spacing*/ );
//cvScalar(blue_component, green_component, red\_component[, alpha_component])
//Qt map non-transparent to 0xFF and transparent to 0
//OpenCV scalar is the reverse, so 255-font->color.val[3]
qp.setPen(QColor(font->color.val[2],font->color.val[1],font->color.val[0],255-font->color.val[3]));
qp.setFont ( f );
}
qp.drawText (org, text );
qp.end();
//cvReleaseMat(&image2Draw_mat);
}
void GuiReceiver::saveWindowParameters(QString name)
{
QPointer<CvWindow> w = icvFindWindowByName( name.toLatin1().data() );
if (w)
w->writeSettings();
}
void GuiReceiver::loadWindowParameters(QString name)
{
QPointer<CvWindow> w = icvFindWindowByName( name.toLatin1().data() );
if (w)
w->readSettings();
}
double GuiReceiver::getRatioWindow(QString name)
{
QPointer<CvWindow> w = icvFindWindowByName( name.toLatin1().data() );
if (!w)
return -1;
return (double)w->getView()->getRatio();
}
void GuiReceiver::setRatioWindow(QString name, double arg2 )
{
QPointer<CvWindow> w = icvFindWindowByName( name.toLatin1().data() );
if (!w)
return;
int flags = (int) arg2;
if (w->getView()->getRatio() == flags)//nothing to do
return;
//if valid flags
if (flags == CV_WINDOW_FREERATIO || flags == CV_WINDOW_KEEPRATIO)
w->getView()->setRatio(flags);
}
double GuiReceiver::getPropWindow(QString name)
{
QPointer<CvWindow> w = icvFindWindowByName( name.toLatin1().data() );
if (!w)
return -1;
return (double)w->param_flags;
}
void GuiReceiver::setPropWindow(QString name, double arg2 )
{
QPointer<CvWindow> w = icvFindWindowByName( name.toLatin1().data() );
if (!w)
return;
int flags = (int) arg2;
if (w->param_flags == flags)//nothing to do
return;
switch(flags)
{
case CV_WINDOW_NORMAL:
w->myGlobalLayout->setSizeConstraint(QLayout::SetMinAndMaxSize);
w->param_flags = flags;
break;
case CV_WINDOW_AUTOSIZE:
w->myGlobalLayout->setSizeConstraint(QLayout::SetFixedSize);
w->param_flags = flags;
break;
default:;
}
}
double GuiReceiver::isFullScreen(QString name)
{
QPointer<CvWindow> w = icvFindWindowByName( name.toLatin1().data() );
if (!w)
return -1;
if (w->isFullScreen())
return CV_WINDOW_FULLSCREEN;
else
return CV_WINDOW_NORMAL;
}
//accept CV_WINDOW_NORMAL or CV_WINDOW_FULLSCREEN
void GuiReceiver::toggleFullScreen(QString name, double flags )
{
QPointer<CvWindow> w = icvFindWindowByName( name.toLatin1().data() );
if (!w)
return;
if (w->isFullScreen() && flags == CV_WINDOW_NORMAL)
{
w->showTools();
w->showNormal();
return;
}
if (!w->isFullScreen() && flags == CV_WINDOW_FULLSCREEN)
{
w->hideTools();
w->showFullScreen();
return;
}
}
void GuiReceiver::createWindow( QString name, int flags )
{
if (!qApp)
CV_Error(CV_StsNullPtr, "NULL session handler" );
// Check the name in the storage
if( icvFindWindowByName( name.toLatin1().data() ))
{
return;
}
//QPointer<CvWindow> w1 =
nb_windows++;
new CvWindow(name, flags);
}
void GuiReceiver::timeOut()
{
_bTimeOut = true;
}
void GuiReceiver::displayInfo( QString name, QString text, int delayms )
{
QPointer<CvWindow> w = icvFindWindowByName( name.toLatin1().data() );
if (w && delayms > 0)
w->displayInfo(text,delayms);
}
void GuiReceiver::displayStatusBar( QString name, QString text, int delayms )
{
QPointer<CvWindow> w = icvFindWindowByName( name.toLatin1().data() );
if (w && delayms > 0)
if (w->myStatusBar)//if statusbar was created
w->displayStatusBar(text,delayms);
}
void GuiReceiver::showImage(QString name, void* arr)
{
QPointer<CvWindow> w = icvFindWindowByName( name.toLatin1().data() );
if (!w)//as observed in the previous implementation (W32, GTK or Carbon), create a new window is the pointer returned is null
{
cvNamedWindow( name.toLatin1().data() );
w = icvFindWindowByName( name.toLatin1().data() );
}
if( w && arr )
{
w->updateImage(arr);
if (w->isHidden())
w->show();
}
else
{
CV_Error(CV_StsNullPtr, "Do nothing (Window or Image NULL)");
}
}
void GuiReceiver::destroyWindow(QString name)
{
QPointer<CvWindow> w = icvFindWindowByName( name.toLatin1().data() );
if (w)
{
w->close();
//in not-multiThreads mode, looks like the window is hidden but not deleted
//so I do it manually
//otherwise QApplication do it for me if the exec command was executed (in multiThread mode)
if (!multiThreads)
delete w;
}
}
void GuiReceiver::destroyAllWindow()
{
if (!qApp)
CV_Error(CV_StsNullPtr, "NULL session handler" );
if (multiThreads)
{
// WARNING: this could even close windows from an external parent app
//#TODO check externalQAppExists and in case it does, close windows carefully,
// i.e. apply the className-check from below...
qApp->closeAllWindows();
}
else
{
bool isWidgetDeleted = true;
while(isWidgetDeleted)
{
isWidgetDeleted = false;
QWidgetList list = QApplication::topLevelWidgets();
for (int i = 0; i < list.count(); i++)
{
QObject *obj = list.at(i);
if (obj->metaObject ()->className () == QString("CvWindow"))
{
delete obj;
isWidgetDeleted = true;
break;
}
}
}
}
}
void GuiReceiver::setOpenGLCallback(QString window_name, void* callbackOpenGL, void* userdata, double angle, double zmin, double zmax)
{
QPointer<CvWindow> w = icvFindWindowByName( window_name.toLatin1().data() );
if (w && callbackOpenGL)
w->setOpenGLCallback((CvOpenGLCallback) callbackOpenGL, userdata,angle,zmin,zmax);
}
void GuiReceiver::moveWindow(QString name, int x, int y)
{
QPointer<CvWindow> w = icvFindWindowByName( name.toLatin1().data() );
if (w)
w->move(x,y);
}
void GuiReceiver::resizeWindow(QString name, int width, int height)
{
QPointer<CvWindow> w = icvFindWindowByName( name.toLatin1().data() );
if (w)
{
w->showNormal();
w->resize(width, height);
}
}
void GuiReceiver::enablePropertiesButtonEachWindow()
{
CvWindow* w;
CvWinModel* temp;
//For each window, enable window property button
foreach (QWidget *widget, QApplication::topLevelWidgets())
{
if (widget->isWindow() && !widget->parentWidget ())//is a window without parent
{
temp = (CvWinModel*) widget;
if (temp->type == type_CvWindow)
{
w = (CvWindow*) widget;
//active window properties button
w->vect_QActions[9]->setDisabled(false);
}
}
}
}
void GuiReceiver::addButton(QString button_name, int button_type, int initial_button_state , void* on_change, void* userdata)
{
if (!global_control_panel)
return;
QPointer<CvButtonbar> b;// = icvFindButtonbarByName( button_name.toLatin1().data(), global_control_panel->myLayout );
//if (b)//button with this name already exist
// return;
if (global_control_panel->myLayout->count() == 0)//if that is the first button attach to the control panel, create a new button bar
{
b = CvWindow::createButtonbar(button_name);//the bar has the name of the first button attached to it
enablePropertiesButtonEachWindow();
}else{
CvBar* lastbar = (CvBar*) global_control_panel->myLayout->itemAt(global_control_panel->myLayout->count()-1);
if (lastbar->type == type_CvTrackbar)//if last bar is a trackbar, create a new buttonbar, else, attach to the current bar
b = CvWindow::createButtonbar(button_name);//the bar has the name of the first button attached to it
else
b = (CvButtonbar*) lastbar;
}
b->addButton( button_name,(CvButtonCallback) on_change, userdata, button_type, initial_button_state);
}
void GuiReceiver::addSlider2(QString bar_name, QString window_name, void* value, int count, void* on_change, void *userdata)
{
QBoxLayout *layout = NULL;
QPointer<CvWindow> w;
if (window_name != "")
{
w = icvFindWindowByName( window_name.toLatin1().data() );
if (!w)
return;
}else{
if (global_control_panel)
layout = global_control_panel->myLayout;
}
QPointer<CvTrackbar> t = icvFindTrackbarByName( bar_name.toLatin1().data() , window_name.toLatin1().data(), layout );
if (t)//trackbar exists
return;
if (!value)
CV_Error(CV_StsNullPtr, "NULL value pointer" );
if (count<= 0)//count is the max value of the slider, so must be bigger than 0
CV_Error(CV_StsNullPtr, "Max value of the slider must be bigger than 0" );
CvWindow::addSlider2(w,bar_name,(int*)value,count,(CvTrackbarCallback2) on_change, userdata);
}
void GuiReceiver::addSlider(QString bar_name, QString window_name, void* value, int count, void* on_change)
{
QBoxLayout *layout = NULL;
QPointer<CvWindow> w;
if (window_name != "")
{
w = icvFindWindowByName( window_name.toLatin1().data() );
if (!w)
return;
}else{
if (global_control_panel)
layout = global_control_panel->myLayout;
}
QPointer<CvTrackbar> t = icvFindTrackbarByName( bar_name.toLatin1().data() , window_name.toLatin1().data(), layout );
if (t)//trackbar exists
return;
if (!value)
CV_Error(CV_StsNullPtr, "NULL value pointer" );
if (count<= 0)//count is the max value of the slider, so must be bigger than 0
CV_Error(CV_StsNullPtr, "Max value of the slider must be bigger than 0" );
CvWindow::addSlider(w,bar_name,(int*)value,count,(CvTrackbarCallback) on_change);
}
int GuiReceiver::start()
{
return qApp->exec();
}
CvTrackbar::CvTrackbar(CvWindow* arg, QString name, int* value, int count, CvTrackbarCallback2 on_change, void* data )
{
callback = NULL;
callback2 = on_change;
userdata = data;
construc_trackbar(arg,name, value, count);
}
CvTrackbar::CvTrackbar(CvWindow* arg, QString name, int* value, int count, CvTrackbarCallback on_change )
{
callback = on_change;
callback2 = NULL;
userdata = NULL;
construc_trackbar(arg,name, value, count);
}
void CvTrackbar::construc_trackbar(CvWindow* arg, QString name, int* value, int count)
{
type=type_CvTrackbar;
myparent = arg;
name_bar = name;
setObjectName(name_bar);
dataSlider = value;
slider = new QSlider(Qt::Horizontal);
slider->setFocusPolicy(Qt::StrongFocus);
slider->setMinimum(0);
slider->setMaximum(count);
slider->setPageStep(5);
slider->setValue(*value);
slider->setTickPosition(QSlider::TicksBelow);
//Change style of the Slider
//slider->setStyleSheet(str_Trackbar_css);
QFile qss(":/stylesheet-trackbar");
if (qss.open(QFile::ReadOnly))
{
slider->setStyleSheet(QLatin1String(qss.readAll()));
qss.close();
}
//this next line does not work if we change the style with a stylesheet, why ? (bug in QT ?)
//slider->setTickPosition(QSlider::TicksBelow);
label = new QPushButton;
label->setFlat(true);
setLabel(slider->value());
QObject::connect( slider, SIGNAL( valueChanged( int ) ),this, SLOT( update( int ) ) );
QObject::connect( label, SIGNAL( clicked() ),this, SLOT( createDialog() ));
//label->setStyleSheet("QPushButton:disabled {color: black}");
addWidget(label,Qt::AlignLeft);//name + value
addWidget(slider,Qt::AlignCenter);//slider
}
void CvTrackbar::createDialog()
{
bool ok= false;
//crash if I access the values directly and give them to QInputDialog, so do a copy first.
int value = slider->value();
int step = slider->singleStep();
int min = slider->minimum();
int max = slider->maximum();
int i =
#if QT_VERSION >= 0x040500
QInputDialog::getInt
#else
QInputDialog::getInteger
#endif
(this->parentWidget(),
tr("Slider %1").arg(name_bar),
tr("New value:"),
value,
min,
max,
step,
&ok);
if (ok)
slider->setValue(i);
}
void CvTrackbar::update(int myvalue)
{
setLabel(myvalue);
*dataSlider = myvalue;
if (callback)
{
callback(myvalue);
return;
}
if (callback2)
{
callback2(myvalue,userdata);
return;
}
}
void CvTrackbar::setLabel(int myvalue)
{
QString nameNormalized = name_bar.leftJustified( 10, ' ', true );
QString valueMaximum = QString("%1").arg(slider->maximum());
QString str = QString("%1 (%2/%3)").arg(nameNormalized).arg(myvalue,valueMaximum.length(),10,QChar('0')).arg(valueMaximum);
label->setText(str);
}
CvTrackbar::~CvTrackbar()
{
delete slider;
delete label;
}
//here CvButtonbar class
CvButtonbar::CvButtonbar(QWidget* arg, QString arg2)
{
type=type_CvButtonbar;
myparent = arg;
name_bar = arg2;
setObjectName(name_bar);
group_button = new QButtonGroup;
/*
label = new QLabel;
setLabel();
addWidget(label,Qt::AlignLeft );
*/
}
CvButtonbar::~CvButtonbar()
{
QLayoutItem *child;
while ((child = takeAt(0)) != 0)
delete child;
delete group_button;
}
void CvButtonbar::setLabel()
{
QString nameNormalized = name_bar.leftJustified( 10, ' ', true );
label->setText(nameNormalized);
}
void CvButtonbar::addButton( QString name, CvButtonCallback call, void* userdata, int button_type, int initial_button_state)
{
QString button_name = name;
if (button_name == "")
button_name = tr("button %1").arg(this->count());
QPointer<QAbstractButton> button;
if (button_type == CV_PUSH_BUTTON)
button = (QAbstractButton*) new CvPushButton(this, button_name,call, userdata);
if (button_type == CV_CHECKBOX)
button = (QAbstractButton*) new CvCheckBox(this, button_name,call, userdata, initial_button_state);
if (button_type == CV_RADIOBOX)
{
button = (QAbstractButton*) new CvRadioButton(this, button_name,call, userdata, initial_button_state);
group_button->addButton(button);
}
if (button)
{
if (button_type == CV_PUSH_BUTTON)
QObject::connect( button, SIGNAL( clicked(bool) ),button, SLOT( callCallBack(bool) ));
else
QObject::connect( button, SIGNAL( toggled(bool) ),button, SLOT( callCallBack(bool) ));
addWidget(button,Qt::AlignCenter);
}
}
//buttons here
CvPushButton::CvPushButton(CvButtonbar* arg1, QString arg2, CvButtonCallback arg3, void* arg4)
{
myparent = arg1;
button_name = arg2;
callback = arg3;
userdata=arg4;
setObjectName(button_name);
setText(button_name);
if (isChecked())
callCallBack(true);
}
void CvPushButton::callCallBack(bool checked)
{
if (callback)
callback(checked,userdata);
}
CvCheckBox::CvCheckBox(CvButtonbar* arg1, QString arg2, CvButtonCallback arg3, void* arg4, int initial_button_state)
{
myparent = arg1;
button_name = arg2;
callback = arg3;
userdata=arg4;
setObjectName(button_name);
setCheckState((initial_button_state == 1?Qt::Checked:Qt::Unchecked));
setText(button_name);
if (isChecked())
callCallBack(true);
}
void CvCheckBox::callCallBack(bool checked)
{
if (callback)
callback(checked,userdata);
}
CvRadioButton::CvRadioButton(CvButtonbar* arg1, QString arg2, CvButtonCallback arg3, void* arg4, int initial_button_state)
{
myparent = arg1;
button_name = arg2;
callback = arg3;
userdata=arg4;
setObjectName(button_name);
setChecked(initial_button_state);
setText(button_name);
if (isChecked())
callCallBack(true);
}
void CvRadioButton::callCallBack(bool checked)
{
if (callback)
callback(checked,userdata);
}
//here CvWinProperties class
CvWinProperties::CvWinProperties(QString name_paraWindow, QObject* parent)
{
//setParent(parent);
type = type_CvWinProperties;
setWindowFlags(Qt::Tool);
setContentsMargins(0,0,0,0);
setWindowTitle(name_paraWindow);
setObjectName(name_paraWindow);
resize(100,50);
myLayout = new QBoxLayout(QBoxLayout::TopToBottom);
myLayout->setObjectName(QString::fromUtf8("boxLayout"));
myLayout->setContentsMargins(0, 0, 0, 0);
myLayout->setSpacing(0);
myLayout->setMargin(0);
myLayout->setSizeConstraint(QLayout::SetFixedSize);
setLayout(myLayout);
hide();
}
void CvWinProperties::closeEvent ( QCloseEvent * e )
{
e->accept();//intersept the close event (not sure I really need it)
//an hide event is also sent. I will intercept it and do some processing
}
void CvWinProperties::showEvent ( QShowEvent * event )
{
//why -1,-1 ?: do this trick because the first time the code is run,
//no value pos was saved so we let Qt move the window in the middle of its parent (event ignored).
//then hide will save the last position and thus, we want to retreive it (event accepted).
QPoint mypos(-1,-1);
QSettings settings("OpenCV2", this->windowTitle());
mypos = settings.value("pos", mypos).toPoint();
if (mypos.x()>=0)
{
move(mypos);
event->accept();
}
else{
event->ignore();
}
}
void CvWinProperties::hideEvent ( QHideEvent * event )
{
QSettings settings("OpenCV2", this->windowTitle());
settings.setValue("pos", pos());//there is an offset of 6 pixels (so the window's position is wrong -- why ?)
event->accept();
}
CvWinProperties::~CvWinProperties()
{
//clear the setting pos
QSettings settings("OpenCV2", this->windowTitle());
settings.remove("pos");
QLayoutItem *child;
if (myLayout)
{
while ((child = myLayout->takeAt(0)) != 0)
delete child;
delete myLayout;
}
}
//Here CvWindow class
CvWindow::CvWindow(QString arg, int arg2)
{
type = type_CvWindow;
moveToThread(qApp->instance()->thread());
param_name = arg;
param_flags = arg2 & 0x0000000F;
param_gui_mode = arg2 & 0x000000F0;
param_ratio_mode = arg2 & 0x00000F00;
//setAttribute(Qt::WA_DeleteOnClose);//in other case, does not release memory
setContentsMargins(0,0,0,0);
setWindowTitle(param_name);
setObjectName(param_name);
resize(400,300);
setMinimumSize(1,1);
//1: create control panel
if (!global_control_panel)
global_control_panel = createParameterWindow();
//2: Layouts
createBarLayout();
createGlobalLayout();
//3: my view
int mode_display = CV_MODE_NORMAL;
#if defined( HAVE_QT_OPENGL )
mode_display = CV_MODE_OPENGL;
#endif
createView(mode_display, param_ratio_mode);
//4: shortcuts and actions
createActions();
createShortcuts();
//5: toolBar and statusbar
if (param_gui_mode == CV_GUI_EXPANDED)
{
createToolBar();
createStatusBar();
}
//Now attach everything
if (myToolBar)
myGlobalLayout->addWidget(myToolBar,Qt::AlignCenter);
myGlobalLayout->addWidget(myview,Qt::AlignCenter);
myGlobalLayout->addLayout(myBarLayout,Qt::AlignCenter);
if (myStatusBar)
myGlobalLayout->addWidget(myStatusBar,Qt::AlignCenter);
setLayout(myGlobalLayout);
show();
}
CvWindow::~CvWindow()
{
QLayoutItem *child;
if (myGlobalLayout)
{
while ((child = myGlobalLayout->takeAt(0)) != 0)
delete child;
delete myGlobalLayout;
}
if (myBarLayout)
{
while ((child = myBarLayout->takeAt(0)) != 0)
delete child;
delete myBarLayout;
}
if (myStatusBar)
{
delete myStatusBar;
delete myStatusBar_msg;
}
if (myToolBar)
{
for (int i=0;i<vect_QActions.count();i++)
delete vect_QActions[i];
delete myToolBar;
}
for (int i=0;i<vect_QShortcuts.count();i++)
delete vect_QShortcuts[i];
if (guiMainThread)
guiMainThread->isLastWindow();
}
CvButtonbar* CvWindow::createButtonbar(QString name_bar)
{
QPointer<CvButtonbar> t = new CvButtonbar(global_control_panel,name_bar);
t->setAlignment(Qt::AlignHCenter);
QPointer<QBoxLayout> myLayout = global_control_panel->myLayout;
myLayout->insertLayout(myLayout->count(),t);
return t;
}
void CvWindow::hideTools()
{
if (myToolBar)
myToolBar->hide();
if (myStatusBar)
myStatusBar->hide();
if (global_control_panel)
global_control_panel->hide();
}
void CvWindow::showTools()
{
if (myToolBar)
myToolBar->show();
if (myStatusBar)
myStatusBar->show();
}
CvWinProperties* CvWindow::createParameterWindow()
{
QString name_paraWindow =QFileInfo(QApplication::applicationFilePath()).fileName()+" settings";
CvWinProperties *result = new CvWinProperties(name_paraWindow,guiMainThread);
return result;
}
void CvWindow::displayPropertiesWin()
{
if (global_control_panel->isHidden())
global_control_panel->show();
else
global_control_panel->hide();
}
void CvWindow::createActions()
{
vect_QActions.resize(10);
//if the shortcuts are changed in window_QT.h, we need to update the tooltip manually
vect_QActions[0] = new QAction(QIcon(":/left-icon"),"Panning left (CTRL+arrowLEFT)",this);
vect_QActions[0]->setIconVisibleInMenu(true);
QObject::connect( vect_QActions[0],SIGNAL(triggered()),myview, SLOT( siftWindowOnLeft() ));
vect_QActions[1] = new QAction(QIcon(":/right-icon"),"Panning right (CTRL+arrowRIGHT)",this);
vect_QActions[1]->setIconVisibleInMenu(true);
QObject::connect( vect_QActions[1],SIGNAL(triggered()),myview, SLOT( siftWindowOnRight() ));
vect_QActions[2] = new QAction(QIcon(":/up-icon"),"Panning up (CTRL+arrowUP)",this);
vect_QActions[2]->setIconVisibleInMenu(true);
QObject::connect( vect_QActions[2],SIGNAL(triggered()),myview, SLOT( siftWindowOnUp() ));
vect_QActions[3] = new QAction(QIcon(":/down-icon"),"Panning down (CTRL+arrowDOWN)",this);
vect_QActions[3]->setIconVisibleInMenu(true);
QObject::connect( vect_QActions[3],SIGNAL(triggered()),myview, SLOT( siftWindowOnDown() ));
vect_QActions[4] = new QAction(QIcon(":/zoom_x1-icon"),"Zoom x1 (CTRL+P)",this);
vect_QActions[4]->setIconVisibleInMenu(true);
QObject::connect( vect_QActions[4],SIGNAL(triggered()),myview, SLOT( resetZoom() ));
vect_QActions[5] = new QAction(QIcon(":/imgRegion-icon"),tr("Zoom x%1 (see label) (CTRL+X)")
.arg(threshold_zoom_img_region)
,this);
vect_QActions[5]->setIconVisibleInMenu(true);
QObject::connect( vect_QActions[5],SIGNAL(triggered()),myview, SLOT( imgRegion() ));
vect_QActions[6] = new QAction(QIcon(":/zoom_in-icon"),tr("Zoom in (CTRL++)"),this);
vect_QActions[6]->setIconVisibleInMenu(true);
QObject::connect( vect_QActions[6],SIGNAL(triggered()),myview, SLOT( ZoomIn() ));
vect_QActions[7] = new QAction(QIcon(":/zoom_out-icon"),tr("Zoom out (CTRL+-)"),this);
vect_QActions[7]->setIconVisibleInMenu(true);
QObject::connect( vect_QActions[7],SIGNAL(triggered()),myview, SLOT( ZoomOut() ));
vect_QActions[8] = new QAction(QIcon(":/save-icon"),tr("Save current image (CTRL+S)"),this);
vect_QActions[8]->setIconVisibleInMenu(true);
QObject::connect( vect_QActions[8],SIGNAL(triggered()),myview, SLOT( saveView() ));
vect_QActions[9] = new QAction(QIcon(":/properties-icon"),tr("Display properties window (CTRL+P)"),this);
vect_QActions[9]->setIconVisibleInMenu(true);
QObject::connect( vect_QActions[9],SIGNAL(triggered()),this, SLOT( displayPropertiesWin() ));
if (global_control_panel->myLayout->count() == 0)
vect_QActions[9]->setDisabled(true);
}
void CvWindow::createShortcuts()
{
vect_QShortcuts.resize(10);
vect_QShortcuts[0] = new QShortcut(shortcut_panning_left, this);
QObject::connect( vect_QShortcuts[0], SIGNAL( activated ()),myview, SLOT( siftWindowOnLeft() ));
vect_QShortcuts[1] = new QShortcut(shortcut_panning_right, this);
QObject::connect( vect_QShortcuts[1], SIGNAL( activated ()),myview, SLOT( siftWindowOnRight() ));
vect_QShortcuts[2] = new QShortcut(shortcut_panning_up, this);
QObject::connect(vect_QShortcuts[2], SIGNAL( activated ()),myview, SLOT( siftWindowOnUp() ));
vect_QShortcuts[3] = new QShortcut(shortcut_panning_down, this);
QObject::connect(vect_QShortcuts[3], SIGNAL( activated ()),myview, SLOT( siftWindowOnDown() ));
vect_QShortcuts[4] = new QShortcut(shortcut_zoom_normal, this);
QObject::connect( vect_QShortcuts[4], SIGNAL( activated ()),myview, SLOT( resetZoom( ) ));
vect_QShortcuts[5] = new QShortcut(shortcut_zoom_imgRegion, this);
QObject::connect( vect_QShortcuts[5], SIGNAL( activated ()),myview, SLOT( imgRegion( ) ));
vect_QShortcuts[6] = new QShortcut(shortcut_zoom_in, this);
QObject::connect( vect_QShortcuts[6], SIGNAL( activated ()),myview, SLOT( ZoomIn() ));
vect_QShortcuts[7] = new QShortcut(shortcut_zoom_out, this);
QObject::connect(vect_QShortcuts[7], SIGNAL( activated ()),myview, SLOT( ZoomOut() ));
vect_QShortcuts[8] = new QShortcut(shortcut_save_img, this);
QObject::connect( vect_QShortcuts[8], SIGNAL( activated ()),myview, SLOT( saveView( ) ));
vect_QShortcuts[9] = new QShortcut(shortcut_properties_win, this);
QObject::connect( vect_QShortcuts[9], SIGNAL( activated ()),this, SLOT( displayPropertiesWin() ));
}
void CvWindow::createToolBar()
{
myToolBar = new QToolBar(this);
myToolBar->setFloatable(false);//is not a window
myToolBar->setFixedHeight(28);
myToolBar->setMinimumWidth(1);
foreach (QAction *a, vect_QActions)
myToolBar->addAction(a);
}
void CvWindow::createStatusBar()
{
myStatusBar = new QStatusBar(this);
myStatusBar->setSizeGripEnabled(false);
myStatusBar->setFixedHeight(20);
myStatusBar->setMinimumWidth(1);
myStatusBar_msg = new QLabel;
//I comment this because if we change the style, myview (the picture)
//will not be the correct size anymore (will lost 2 pixel because of the borders)
//myStatusBar_msg->setFrameStyle(QFrame::Raised);
myStatusBar_msg->setAlignment(Qt::AlignHCenter);
myStatusBar->addWidget(myStatusBar_msg);
}
void CvWindow::createGlobalLayout()
{
myGlobalLayout = new QBoxLayout(QBoxLayout::TopToBottom);
myGlobalLayout->setObjectName(QString::fromUtf8("boxLayout"));
myGlobalLayout->setContentsMargins(0, 0, 0, 0);
myGlobalLayout->setSpacing(0);
myGlobalLayout->setMargin(0);
setMinimumSize(1,1);
if (param_flags == CV_WINDOW_AUTOSIZE)
myGlobalLayout->setSizeConstraint(QLayout::SetFixedSize);
if (param_flags == CV_WINDOW_NORMAL)
myGlobalLayout->setSizeConstraint(QLayout::SetMinAndMaxSize);
}
void CvWindow::createBarLayout()
{
myBarLayout = new QBoxLayout(QBoxLayout::TopToBottom);
myBarLayout->setObjectName(QString::fromUtf8("barLayout"));
myBarLayout->setContentsMargins(0, 0, 0, 0);
myBarLayout->setSpacing(0);
myBarLayout->setMargin(0);
}
void CvWindow::createView(int mode, int ratio)
{
//mode = CV_MODE_NORMAL or CV_MODE_OPENGL
//ratio = CV_WINDOW_KEEPRATIO or CV_WINDOW_FREERATIO
myview = new ViewPort(this, mode,ratio);//parent, mode_display, keep_aspect_ratio
myview->setAlignment(Qt::AlignHCenter);
}
void CvWindow::setOpenGLCallback(CvOpenGLCallback func,void* userdata, double angle, double zmin, double zmax)
{
myview->setOpenGLCallback(func,userdata, angle, zmin, zmax );
}
ViewPort* CvWindow::getView()
{
return myview;
}
void CvWindow::displayInfo(QString text,int delayms)
{
myview->startDisplayInfo(text, delayms);
}
void CvWindow::displayStatusBar(QString text,int delayms)
{
myStatusBar->showMessage(text,delayms);
}
void CvWindow::updateImage(void* arr)
{
myview->updateImage(arr);
}
void CvWindow::setMouseCallBack(CvMouseCallback m, void* param)
{
myview->setMouseCallBack(m,param);
}
//addSlider2 is static
void CvWindow::addSlider2(CvWindow* w,QString name, int* value, int count,CvTrackbarCallback2 on_change, void* userdata)
{
QPointer<CvTrackbar> t = new CvTrackbar(w,name,value, count, on_change, userdata);
t->setAlignment(Qt::AlignHCenter);
QPointer<QBoxLayout> myLayout;
if (w)
{
myLayout = w->myBarLayout;
}
else
{
myLayout = global_control_panel->myLayout;
//if first one, enable control panel
if (myLayout->count() == 0)
guiMainThread->enablePropertiesButtonEachWindow();
}
myLayout->insertLayout( myLayout->count(),t);
}
//addSlider is static
void CvWindow::addSlider(CvWindow* w,QString name, int* value, int count,CvTrackbarCallback on_change)
{
QPointer<CvTrackbar> t = new CvTrackbar(w,name,value, count, on_change);
t->setAlignment(Qt::AlignHCenter);
QPointer<QBoxLayout> myLayout;
if (w)
{
myLayout = w->myBarLayout;
}
else
{
myLayout = global_control_panel->myLayout;
//if first one, enable control panel
if (myLayout->count() == 0)
guiMainThread->enablePropertiesButtonEachWindow();
}
myLayout->insertLayout( myLayout->count(),t);
}
//Need more test here !
void CvWindow::keyPressEvent(QKeyEvent *event)
{
//see http://doc.trolltech.com/4.6/qt.html#Key-enum
int key = event->key();
//bool goodKey = false;
bool goodKey = true;
Qt::Key qtkey = static_cast<Qt::Key>(key);
char asciiCode = QTest::keyToAscii(qtkey);
if(asciiCode != 0)
{
key = static_cast<int>(asciiCode);
}
//control plus (Z, +, -, up, down, left, right) are used for zoom/panning functions
if (event->modifiers() != Qt::ControlModifier && goodKey)
{
mutexKey.lock();
last_key = key;
//last_key = event->nativeVirtualKey ();
mutexKey.unlock();
key_pressed.wakeAll();
//event->accept();
}
QWidget::keyPressEvent(event);
}
//TODO: load CV_GUI flag (done) and act accordingly (create win property if needed and attach trackbars)
void CvWindow::readSettings()
{
//organisation and application's name
QSettings settings("OpenCV2", QFileInfo(QApplication::applicationFilePath()).fileName());
QPoint pos = settings.value("pos", QPoint(200, 200)).toPoint();
QSize size = settings.value("size", QSize(400, 400)).toSize();
//param_name = settings.value("name_window",param_name).toString();
param_flags = settings.value("mode_resize",param_flags).toInt();
param_gui_mode = settings.value("mode_gui",param_gui_mode).toInt();
param_ratio_mode = settings.value("mode_ratio",param_ratio_mode).toInt();
myview->param_keepRatio = settings.value("view_aspectRatio",myview->param_keepRatio).toInt();
param_flags = settings.value("mode_resize",param_flags).toInt();
qreal m11 = settings.value("matrix_view.m11",myview->param_matrixWorld.m11()).toDouble();
qreal m12 = settings.value("matrix_view.m12",myview->param_matrixWorld.m12()).toDouble();
qreal m13 = settings.value("matrix_view.m13",myview->param_matrixWorld.m13()).toDouble();
qreal m21 = settings.value("matrix_view.m21",myview->param_matrixWorld.m21()).toDouble();
qreal m22 = settings.value("matrix_view.m22",myview->param_matrixWorld.m22()).toDouble();
qreal m23 = settings.value("matrix_view.m23",myview->param_matrixWorld.m23()).toDouble();
qreal m31 = settings.value("matrix_view.m31",myview->param_matrixWorld.m31()).toDouble();
qreal m32 = settings.value("matrix_view.m32",myview->param_matrixWorld.m32()).toDouble();
qreal m33 = settings.value("matrix_view.m33",myview->param_matrixWorld.m33()).toDouble();
myview->param_matrixWorld = QTransform(m11,m12,m13,m21,m22,m23,m31,m32,m33);
//trackbar here
icvLoadTrackbars(&settings);
resize(size);
move(pos);
if (global_control_panel)
{
icvLoadControlPanel();
global_control_panel->move(settings.value("posPanel", global_control_panel->pos()).toPoint());
}
}
void CvWindow::writeSettings()
{
//organisation and application's name
QSettings settings("OpenCV2", QFileInfo(QApplication::applicationFilePath()).fileName());
//settings.setValue("name_window",param_name);
settings.setValue("pos", pos());
settings.setValue("size", size());
settings.setValue("mode_resize",param_flags);
settings.setValue("mode_gui",param_gui_mode);
settings.setValue("param_ratio_mode",param_ratio_mode);
settings.setValue("view_aspectRatio",myview->param_keepRatio);
settings.setValue("matrix_view.m11",myview->param_matrixWorld.m11());
settings.setValue("matrix_view.m12",myview->param_matrixWorld.m12());
settings.setValue("matrix_view.m13",myview->param_matrixWorld.m13());
settings.setValue("matrix_view.m21",myview->param_matrixWorld.m21());
settings.setValue("matrix_view.m22",myview->param_matrixWorld.m22());
settings.setValue("matrix_view.m23",myview->param_matrixWorld.m23());
settings.setValue("matrix_view.m31",myview->param_matrixWorld.m31());
settings.setValue("matrix_view.m32",myview->param_matrixWorld.m32());
settings.setValue("matrix_view.m33",myview->param_matrixWorld.m33());
icvSaveTrackbars(&settings);
if (global_control_panel)
{
icvSaveControlPanel();
settings.setValue("posPanel", global_control_panel->pos());
}
}
void CvWindow::icvLoadControlPanel()
{
QSettings settings("OpenCV2", QFileInfo(QApplication::applicationFilePath()).fileName()+" control panel");
int size = settings.beginReadArray("bars");
int subsize;
CvBar* t;
if (size == global_control_panel->myLayout->layout()->count())
for (int i = 0; i < size; ++i) {
t = (CvBar*) global_control_panel->myLayout->layout()->itemAt(i);
settings.setArrayIndex(i);
if (t->type == type_CvTrackbar)
{
if (t->name_bar == settings.value("namebar").toString())
{
((CvTrackbar*)t)->slider->setValue(settings.value("valuebar").toInt());
}
}
if (t->type == type_CvButtonbar)
{
subsize = settings.beginReadArray(QString("buttonbar")+i);
if ( subsize == ((CvButtonbar*)t)->layout()->count() )
icvLoadButtonbar((CvButtonbar*)t,&settings);
settings.endArray();
}
}
settings.endArray();
}
void CvWindow::icvSaveControlPanel()
{
QSettings settings("OpenCV2", QFileInfo(QApplication::applicationFilePath()).fileName()+" control panel");
settings.beginWriteArray("bars");
CvBar* t;
for (int i = 0; i < global_control_panel->myLayout->layout()->count(); ++i) {
t = (CvBar*) global_control_panel->myLayout->layout()->itemAt(i);
settings.setArrayIndex(i);
if (t->type == type_CvTrackbar)
{
settings.setValue("namebar", QString(t->name_bar));
settings.setValue("valuebar",((CvTrackbar*)t)->slider->value());
}
if (t->type == type_CvButtonbar)
{
settings.beginWriteArray(QString("buttonbar")+i);
icvSaveButtonbar((CvButtonbar*)t,&settings);
settings.endArray();
}
}
settings.endArray();
}
void CvWindow::icvSaveButtonbar(CvButtonbar* b,QSettings *settings)
{
QWidget* temp;
QString myclass;
for (int i = 0; i < b->layout()->count(); ++i) {
settings->setArrayIndex(i);
temp = (QWidget*) b->layout()->itemAt(i)->widget();
myclass = QString(temp->metaObject ()->className ());
if (myclass == "CvPushButton")
{
CvPushButton* button = (CvPushButton*) temp;
settings->setValue("namebutton", QString(button->text()) );
settings->setValue("valuebutton", int(button->isChecked()));
}
if (myclass == "CvCheckBox")
{
CvCheckBox* button = (CvCheckBox*) temp;
settings->setValue("namebutton", QString(button->text()) );
settings->setValue("valuebutton", int(button->isChecked()));
}
if (myclass == "CvRadioButton")
{
CvRadioButton* button = (CvRadioButton*) temp;
settings->setValue("namebutton", QString(button->text()) );
settings->setValue("valuebutton", int(button->isChecked()));
}
}
}
void CvWindow::icvLoadButtonbar(CvButtonbar* b,QSettings *settings)
{
QWidget* temp;
QString myclass;
for (int i = 0; i < b->layout()->count(); ++i)
{
settings->setArrayIndex(i);
temp = (QWidget*) b->layout()->itemAt(i)->widget();
myclass = QString(temp->metaObject ()->className ());
if (myclass == "CvPushButton")
{
CvPushButton* button = (CvPushButton*) temp;
if (button->text() == settings->value("namebutton").toString())
button->setChecked(settings->value("valuebutton").toInt());
}
if (myclass == "CvCheckBox")
{
CvCheckBox* button = (CvCheckBox*) temp;
if (button->text() == settings->value("namebutton").toString())
button->setChecked(settings->value("valuebutton").toInt());
}
if (myclass == "CvRadioButton")
{
CvRadioButton* button = (CvRadioButton*) temp;
if (button->text() == settings->value("namebutton").toString())
button->setChecked(settings->value("valuebutton").toInt());
}
}
}
void CvWindow::icvLoadTrackbars(QSettings *settings)
{
int size = settings->beginReadArray("trackbars");
QPointer<CvTrackbar> t;
//trackbar are saved in the same order, so no need to use icvFindTrackbarByName
if (myBarLayout->layout()->count() == size)//if not the same number, the window saved and loaded is not the same (nb trackbar not equal)
for (int i = 0; i < size; ++i)
{
settings->setArrayIndex(i);
t = (CvTrackbar*) myBarLayout->layout()->itemAt(i);
if (t->name_bar == settings->value("name").toString())
t->slider->setValue(settings->value("value").toInt());
}
settings->endArray();
}
void CvWindow::icvSaveTrackbars(QSettings *settings)
{
QPointer<CvTrackbar> t;
settings->beginWriteArray("trackbars");
for (int i = 0; i < myBarLayout->layout()->count(); ++i) {
t = (CvTrackbar*) myBarLayout->layout()->itemAt(i);
settings->setArrayIndex(i);
settings->setValue("name", t->name_bar);
settings->setValue("value", t->slider->value());
}
settings->endArray();
}
//Here is ViewPort class
ViewPort::ViewPort(CvWindow* arg, int arg2, int arg3)
{
centralWidget = arg,
setParent(centralWidget);
mode_display = arg2;
param_keepRatio = arg3;
//setAlignment(Qt::AlignLeft | Qt::AlignTop);
setContentsMargins(0,0,0,0);
setMinimumSize(1,1);
setObjectName(QString::fromUtf8("graphicsView"));
timerDisplay = new QTimer(this);
timerDisplay->setSingleShot(true);
connect(timerDisplay, SIGNAL(timeout()), this, SLOT(stopDisplayInfo()));
drawInfo = false;
positionGrabbing = QPointF(0,0);
positionCorners = QRect(0,0,size().width(),size().height());
on_mouse = NULL;
mouseCoordinate = QPoint(-1,-1);
on_openGL_draw3D = NULL;
//no border
setStyleSheet( "QGraphicsView { border-style: none; }" );
#if defined( HAVE_QT_OPENGL )
if ( mode_display == CV_MODE_OPENGL)
{
myGL = new QGLWidget(QGLFormat(QGL::SampleBuffers));
setViewport(myGL);
if (param_keepRatio == CV_WINDOW_KEEPRATIO)
{
//TODO: fix this bug:
//::::blinking in OpenGL with CV_WINDOW_KEEPRATIO::::
//The raison is that to move the widget in the middle and resize it manually to keep the aspect ratio,
//we resize in resizeEvent() and use a trick not to be blocked in an infinity loop.
//This is working fine if the viewport is not OpenGL, however we have two rendering with OpenGL.
//The first rendering with the widget not moved in the midle (so stuck in top left), then the final and correct rendering.
//This two rendering are visible with OpenGL and CV_WINDOW_KEEPRATIO but not with native rendering (why ???)
//I tried to use Qt::AlignCenter of the layout manager but the widget does not expand anymore
//I tried to center with painter.drawImage (in draw2D), but the imgRegion and all other function using the size of the widget will not work anymore.
startDisplayInfo("WARNING: For now, you cannot use OpenGL rendering with CV_WINDOW_KEEPRATIO, so we changed to CV_WINDOW_FREERATIO", 5000);
setRatio(CV_WINDOW_FREERATIO);
}
//setViewport(new QGLWidget());
angle = DEFAULT_ANGLE;
zmin = DEFAULT_ZMIN;
zmax = DEFAULT_ZMAX;
initGL();
}
#endif
image2Draw_mat = cvCreateMat( viewport()->width(),viewport()->height(), CV_8UC3 );
nbChannelOriginImage = 0;
cvZero(image2Draw_mat);
setInteractive(false);
setMouseTracking (true);//receive mouse event everytime
}
ViewPort::~ViewPort()
{
if (image2Draw_mat)
cvReleaseMat(&image2Draw_mat);
//#if defined( HAVE_QT_OPENGL )
// if (myGL)
// delete myGL;
//#endif;
delete timerDisplay;
}
void ViewPort::contextMenuEvent(QContextMenuEvent *event)
{
if (centralWidget->vect_QActions.size() > 0)
{
QMenu menu(this);
foreach (QAction *a, centralWidget->vect_QActions)
menu.addAction(a);
// menu.popup(event->globalPos());
menu.exec(event->globalPos());
}
}
//can save as JPG, JPEG, BMP, PNG
void ViewPort::saveView()
{
QDate date_d = QDate::currentDate ();
QString date_s = date_d.toString("dd.MM.yyyy");
QString name_s = centralWidget->param_name+"_screenshot_"+date_s;
QString fileName = QFileDialog::getSaveFileName(this, tr("Save File %1").arg(name_s),
name_s+".png",
tr("Images (*.png *.jpg *.bmp *.jpeg)"));
if (!fileName.isEmpty ())//save the picture
{
QString extension = fileName.right(3);
#if defined( HAVE_QT_OPENGL )
image2Draw_qt_resized = ((QGLWidget*)viewport())->grabFrameBuffer();
#else
// (no need anymore) create the image resized to receive the 'screenshot'
// image2Draw_qt_resized = QImage(viewport()->width(), viewport()->height(),QImage::Format_RGB888);
QPainter saveimage(&image2Draw_qt_resized);
this->render(&saveimage);
#endif
// Save it..
if (QString::compare(extension, "png", Qt::CaseInsensitive) == 0)
{
image2Draw_qt_resized.save(fileName, "PNG");
return;
}
if (QString::compare(extension, "jpg", Qt::CaseInsensitive) == 0)
{
image2Draw_qt_resized.save(fileName, "JPG");
return;
}
if (QString::compare(extension, "bmp", Qt::CaseInsensitive) == 0)
{
image2Draw_qt_resized.save(fileName, "BMP");
return;
}
if (QString::compare(extension, "jpeg", Qt::CaseInsensitive) == 0)
{
image2Draw_qt_resized.save(fileName, "JPEG");
return;
}
CV_Error(CV_StsNullPtr, "file extension not recognized, please choose between JPG, JPEG, BMP or PNG");
}
}
void ViewPort::setRatio(int flags)
{
centralWidget->param_ratio_mode = flags;
param_keepRatio = flags;
updateGeometry();
viewport()->update();
}
void ViewPort::imgRegion()
{
scaleView( (threshold_zoom_img_region/param_matrixWorld.m11()-1)*5,QPointF(size().width()/2,size().height()/2));
}
int ViewPort::getRatio()
{
return param_keepRatio;
}
void ViewPort::resetZoom()
{
param_matrixWorld.reset();
controlImagePosition();
}
void ViewPort::ZoomIn()
{
scaleView( 0.5,QPointF(size().width()/2,size().height()/2));
}
void ViewPort::ZoomOut()
{
scaleView( -0.5,QPointF(size().width()/2,size().height()/2));
}
//Note: move 2 percent of the window
void ViewPort::siftWindowOnLeft()
{
float delta = 2*width()/(100.0*param_matrixWorld.m11());
moveView(QPointF(delta,0));
}
//Note: move 2 percent of the window
void ViewPort::siftWindowOnRight()
{
float delta = -2*width()/(100.0*param_matrixWorld.m11());
moveView(QPointF(delta,0));
}
//Note: move 2 percent of the window
void ViewPort::siftWindowOnUp()
{
float delta = 2*height()/(100.0*param_matrixWorld.m11());
moveView(QPointF(0,delta));
}
//Note: move 2 percent of the window
void ViewPort::siftWindowOnDown()
{
float delta = -2*height()/(100.0*param_matrixWorld.m11());
moveView(QPointF(0,delta));
}
void ViewPort::startDisplayInfo(QString text, int delayms)
{
if (timerDisplay->isActive())
stopDisplayInfo();
infoText = text;
timerDisplay->start(delayms);
drawInfo = true;
}
void ViewPort::stopDisplayInfo()
{
timerDisplay->stop();
drawInfo = false;
}
inline bool ViewPort::isSameSize(IplImage* img1,IplImage* img2)
{
return img1->width == img2->width && img1->height == img2->height;
}
void ViewPort::updateImage(const CvArr *arr)
{
//if (!arr)
//CV_Error(CV_StsNullPtr, "NULL arr pointer (in showImage)" );
CV_Assert(arr);
CvMat * mat, stub;
int origin=0;
if( CV_IS_IMAGE_HDR( arr ))
origin = ((IplImage*)arr)->origin;
mat = cvGetMat(arr, &stub);
//IplImage* tempImage = (IplImage*)arr;
if( CV_IS_IMAGE_HDR( arr ))
origin = ((IplImage*)arr)->origin;
if (!CV_ARE_SIZES_EQ(image2Draw_mat,mat))
{
cvReleaseMat(&image2Draw_mat);
//the image in ipl (to do a deep copy with cvCvtColor)
image2Draw_mat = cvCreateMat( mat->rows, mat->cols, CV_8UC3 );
image2Draw_qt = QImage(image2Draw_mat->data.ptr, image2Draw_mat->cols,image2Draw_mat->rows, image2Draw_mat->step,QImage::Format_RGB888);
//use to compute mouse coordinate, I need to update the ratio here and in resizeEvent
ratioX=width()/float(image2Draw_mat->cols);
ratioY=height()/float(image2Draw_mat->rows);
updateGeometry();
}
nbChannelOriginImage = cvGetElemType(mat);
cvConvertImage(mat,image2Draw_mat,(origin != 0 ? CV_CVTIMG_FLIP : 0) + CV_CVTIMG_SWAP_RB );
viewport()->update();
}
void ViewPort::setMouseCallBack(CvMouseCallback m, void* param)
{
on_mouse = m;
on_mouse_param = param;
}
#if defined( HAVE_QT_OPENGL )
void ViewPort::setOpenGLCallback(CvOpenGLCallback func, void* userdata, double angle_arg, double zmin_arg, double zmax_arg)
{
//avoid unreferenced formal parameter warning with vs 2008
//http://msdn.microsoft.com/en-en/library/26kb9fy0%28VS.80%29.aspx
on_openGL_draw3D = func;
on_openGL_param = userdata;
if (angle_arg > 0)
angle = angle_arg;
else
angle = DEFAULT_ANGLE;
if (zmin_arg >= 0)
zmin = zmin_arg;
else
zmin = DEFAULT_ZMIN;
if (zmax_arg > 0)
zmax = zmax_arg;
else
zmax = DEFAULT_ZMAX;
}
#else
void ViewPort::setOpenGLCallback(CvOpenGLCallback, void*, double, double, double)
{
}
#endif
void ViewPort::controlImagePosition()
{
qreal left, top, right, bottom;
//after check top-left, bottom right corner to avoid getting "out" during zoom/panning
param_matrixWorld.map(0,0,&left,&top);
if (left > 0)
{
param_matrixWorld.translate(-left,0);
left = 0;
}
if (top > 0)
{
param_matrixWorld.translate(0,-top);
top = 0;
}
//-------
QSize sizeImage = size();
param_matrixWorld.map(sizeImage.width(),sizeImage.height(),&right,&bottom);
if (right < sizeImage.width())
{
param_matrixWorld.translate(sizeImage.width()-right,0);
right = sizeImage.width();
}
if (bottom < sizeImage.height())
{
param_matrixWorld.translate(0,sizeImage.height()-bottom);
bottom = sizeImage.height();
}
//save corner position
positionCorners.setTopLeft(QPoint(left,top));
positionCorners.setBottomRight(QPoint(right,bottom));
//save also the inv matrix
matrixWorld_inv = param_matrixWorld.inverted();
//viewport()->update();
}
void ViewPort::moveView(QPointF delta)
{
param_matrixWorld.translate(delta.x(),delta.y());
controlImagePosition();
viewport()->update();
}
//factor is -0.5 (zoom out) or 0.5 (zoom in)
void ViewPort::scaleView(qreal factor,QPointF center)
{
factor/=5;//-0.1 <-> 0.1
factor+=1;//0.9 <-> 1.1
//limit zoom out ---
if (param_matrixWorld.m11()==1 && factor < 1)
return;
if (param_matrixWorld.m11()*factor<1)
factor = 1/param_matrixWorld.m11();
//limit zoom int ---
if (param_matrixWorld.m11()>100 && factor > 1)
return;
//inverse the transform
int a, b;
matrixWorld_inv.map(center.x(),center.y(),&a,&b);
param_matrixWorld.translate(a-factor*a,b-factor*b);
param_matrixWorld.scale(factor,factor);
controlImagePosition();
//display new zoom
if (centralWidget->myStatusBar)
centralWidget->displayStatusBar(tr("Zoom: %1%").arg(param_matrixWorld.m11()*100),1000);
if (param_matrixWorld.m11()>1)
setCursor(Qt::OpenHandCursor);
else
unsetCursor();
}
void ViewPort::wheelEvent(QWheelEvent *event)
{
scaleView( event->delta() / 240.0,event->pos());
viewport()->update();
}
void ViewPort::mousePressEvent(QMouseEvent *event)
{
int cv_event = -1, flags = 0;
QPoint pt = event->pos();
//icvmouseHandler: pass parameters for cv_event, flags
icvmouseHandler(event, mouse_down, cv_event, flags);
icvmouseProcessing(QPointF(pt), cv_event, flags);
if (param_matrixWorld.m11()>1)
{
setCursor(Qt::ClosedHandCursor);
positionGrabbing = event->pos();
}
QWidget::mousePressEvent(event);
}
void ViewPort::mouseReleaseEvent(QMouseEvent *event)
{
int cv_event = -1, flags = 0;
QPoint pt = event->pos();
//icvmouseHandler: pass parameters for cv_event, flags
icvmouseHandler(event, mouse_up, cv_event, flags);
icvmouseProcessing(QPointF(pt), cv_event, flags);
if (param_matrixWorld.m11()>1)
setCursor(Qt::OpenHandCursor);
QWidget::mouseReleaseEvent(event);
}
void ViewPort::mouseDoubleClickEvent(QMouseEvent *event)
{
int cv_event = -1, flags = 0;
QPoint pt = event->pos();
//icvmouseHandler: pass parameters for cv_event, flags
icvmouseHandler(event, mouse_dbclick, cv_event, flags);
icvmouseProcessing(QPointF(pt), cv_event, flags);
QWidget::mouseDoubleClickEvent(event);
}
void ViewPort::mouseMoveEvent(QMouseEvent *event)
{
int cv_event = CV_EVENT_MOUSEMOVE, flags = 0;
QPoint pt = event->pos();
//icvmouseHandler: pass parameters for cv_event, flags
icvmouseHandler(event, mouse_move, cv_event, flags);
icvmouseProcessing(QPointF(pt), cv_event, flags);
if (param_matrixWorld.m11()>1 && event->buttons() == Qt::LeftButton)
{
QPointF dxy = (pt - positionGrabbing)/param_matrixWorld.m11();
positionGrabbing = event->pos();
moveView(dxy);
}
//I update the statusbar here because if the user does a cvWaitkey(0) (like with inpaint.cpp)
//the status bar will only be repaint when a click occurs.
if (centralWidget->myStatusBar)
viewport()->update();
QWidget::mouseMoveEvent(event);
}
/*void ViewPort::dragMoveEvent(QDragMoveEvent *event)
{
QPoint pt = event->pos();
//icvmouseHandler: pass parameters for cv_event, flags
icvmouseProcessing(QPointF(pt), CV_EVENT_MOUSEMOVE, CV_EVENT_FLAG_LBUTTON);
if (param_matrixWorld.m11()>1)
{
QPointF dxy = (pt - positionGrabbing)/param_matrixWorld.m11();
positionGrabbing = event->pos();
moveView(dxy);
}
//I update the statusbar here because if the user does a cvWaitkey(0) (like with inpaint.cpp)
//the status bar will only be repaint when a click occurs.
if (centralWidget->myStatusBar)
viewport()->update();
QWidget::dragMoveEvent(event);
}*/
//up, down, dclick, move
void ViewPort::icvmouseHandler(QMouseEvent *event, type_mouse_event category, int &cv_event, int &flags)
{
Qt::KeyboardModifiers modifiers = event->modifiers();
Qt::MouseButtons buttons = event->buttons();
flags = 0;
if(modifiers & Qt::ShiftModifier)
flags |= CV_EVENT_FLAG_SHIFTKEY;
if(modifiers & Qt::ControlModifier)
flags |= CV_EVENT_FLAG_CTRLKEY;
if(modifiers & Qt::AltModifier)
flags |= CV_EVENT_FLAG_ALTKEY;
if(buttons & Qt::LeftButton)
flags |= CV_EVENT_FLAG_LBUTTON;
if(buttons & Qt::RightButton)
flags |= CV_EVENT_FLAG_RBUTTON;
if(buttons & Qt::MidButton)
flags |= CV_EVENT_FLAG_MBUTTON;
cv_event = CV_EVENT_MOUSEMOVE;
switch(event->button())
{
case Qt::LeftButton:
cv_event = tableMouseButtons[category][0];
flags |= CV_EVENT_FLAG_LBUTTON;
break;
case Qt::RightButton:
cv_event = tableMouseButtons[category][1];
flags |= CV_EVENT_FLAG_RBUTTON;
break;
case Qt::MidButton:
cv_event = tableMouseButtons[category][2];
flags |= CV_EVENT_FLAG_MBUTTON;
break;
default:;
}
}
void ViewPort::icvmouseProcessing(QPointF pt, int cv_event, int flags)
{
//to convert mouse coordinate
qreal pfx, pfy;
matrixWorld_inv.map(pt.x(),pt.y(),&pfx,&pfy);
mouseCoordinate.rx()=floor(pfx/ratioX);
mouseCoordinate.ry()=floor(pfy/ratioY);
if (on_mouse)
on_mouse( cv_event, mouseCoordinate.x(),
mouseCoordinate.y(), flags, on_mouse_param );
}
QSize ViewPort::sizeHint() const
{
if(image2Draw_mat)
return QSize(image2Draw_mat->cols,image2Draw_mat->rows);
else
return QGraphicsView::sizeHint();
}
void ViewPort::resizeEvent ( QResizeEvent *event)
{
controlImagePosition();
//use to compute mouse coordinate, I need to update the ratio here and in resizeEvent
ratioX=width()/float(image2Draw_mat->cols);
ratioY=height()/float(image2Draw_mat->rows);
if(param_keepRatio == CV_WINDOW_KEEPRATIO)//to keep the same aspect ratio
{
QSize newSize = QSize(image2Draw_mat->cols,image2Draw_mat->rows);
newSize.scale(event->size(),Qt::KeepAspectRatio);
//imageWidth/imageHeight = newWidth/newHeight +/- epsilon
//ratioX = ratioY +/- epsilon
//||ratioX - ratioY|| = epsilon
if (fabs(ratioX - ratioY)*100> ratioX)//avoid infinity loop / epsilon = 1% of ratioX
{
resize(newSize);
//move to the middle
//newSize get the delta offset to place the picture in the middle of its parent
newSize= (event->size()-newSize)/2;
//if the toolbar is displayed, avoid drawing myview on top of it
if (centralWidget->myToolBar)
if(!centralWidget->myToolBar->isHidden())
newSize +=QSize(0,centralWidget->myToolBar->height());
move(newSize.width(),newSize.height());
}
}
return QGraphicsView::resizeEvent(event);
}
void ViewPort::paintEvent(QPaintEvent* event)
{
QPainter myPainter(viewport());
myPainter.setWorldTransform(param_matrixWorld);
draw2D(&myPainter);
#if defined( HAVE_QT_OPENGL )
if ( mode_display == CV_MODE_OPENGL && on_openGL_draw3D)
{
myPainter.save(); // Needed when using the GL1 engine
myPainter.beginNativePainting(); // Needed when using the GL2 engine
setGL(width(),height());
on_openGL_draw3D(on_openGL_param);
unsetGL();
myPainter.endNativePainting(); // Needed when using the GL2 engine
myPainter.restore(); // Needed when using the GL1 engine
}
#endif
//Now disable matrixWorld for overlay display
myPainter.setWorldMatrixEnabled (false );
//in mode zoom/panning
if (param_matrixWorld.m11()>1)
{
if (param_matrixWorld.m11()>=threshold_zoom_img_region)
{
if (centralWidget->param_flags == CV_WINDOW_NORMAL)
startDisplayInfo("WARNING: The values displayed are the resized image's values. If you want the original image's values, use CV_WINDOW_AUTOSIZE", 1000);
drawImgRegion(&myPainter);
}
drawViewOverview(&myPainter);
}
//for information overlay
if (drawInfo)
drawInstructions(&myPainter);
//for statusbar
if (centralWidget->myStatusBar)
drawStatusBar();
QGraphicsView::paintEvent(event);
}
void ViewPort::draw2D(QPainter *painter)
{
image2Draw_qt = QImage(image2Draw_mat->data.ptr, image2Draw_mat->cols, image2Draw_mat->rows,image2Draw_mat->step,QImage::Format_RGB888);
image2Draw_qt_resized = image2Draw_qt.scaled(viewport()->width(),viewport()->height(),Qt::IgnoreAspectRatio,Qt::FastTransformation);//Qt::SmoothTransformation);
painter->drawImage(0,0,image2Draw_qt_resized);
}
//only if CV_8UC1 or CV_8UC3
void ViewPort::drawStatusBar()
{
if (nbChannelOriginImage!=CV_8UC1 && nbChannelOriginImage!=CV_8UC3)
return;
if (mouseCoordinate.x()>=0 &&
mouseCoordinate.y()>=0 &&
mouseCoordinate.x()<image2Draw_qt.width() &&
mouseCoordinate.y()<image2Draw_qt.height())
// if (mouseCoordinate.x()>=0 && mouseCoordinate.y()>=0)
{
QRgb rgbValue = image2Draw_qt.pixel(mouseCoordinate);
if (nbChannelOriginImage==CV_8UC3 )
{
centralWidget->myStatusBar_msg->setText(tr("<font color='black'>(x=%1, y=%2) ~ </font>")
.arg(mouseCoordinate.x())
.arg(mouseCoordinate.y())+
tr("<font color='red'>R:%3 </font>").arg(qRed(rgbValue))+//.arg(value.val[0])+
tr("<font color='green'>G:%4 </font>").arg(qGreen(rgbValue))+//.arg(value.val[1])+
tr("<font color='blue'>B:%5</font>").arg(qBlue(rgbValue))//.arg(value.val[2])
);
}
if (nbChannelOriginImage==CV_8UC1)
{
//all the channel have the same value (because of cvconvertimage), so only the r channel is dsplayed
centralWidget->myStatusBar_msg->setText(tr("<font color='black'>(x=%1, y=%2) ~ </font>")
.arg(mouseCoordinate.x())
.arg(mouseCoordinate.y())+
tr("<font color='grey'>L:%3 </font>").arg(qRed(rgbValue))
);
}
}
}
//accept only CV_8UC1 and CV_8UC8 image for now
void ViewPort::drawImgRegion(QPainter *painter)
{
if (nbChannelOriginImage!=CV_8UC1 && nbChannelOriginImage!=CV_8UC3)
return;
qreal offsetX = param_matrixWorld.dx()/param_matrixWorld.m11();
offsetX = offsetX - floor(offsetX);
qreal offsetY = param_matrixWorld.dy()/param_matrixWorld.m11();
offsetY = offsetY - floor(offsetY);
QSize view = size();
QVarLengthArray<QLineF, 30> linesX;
for (qreal x = offsetX*param_matrixWorld.m11(); x < view.width(); x += param_matrixWorld.m11() )
linesX.append(QLineF(x, 0, x, view.height()));
QVarLengthArray<QLineF, 30> linesY;
for (qreal y = offsetY*param_matrixWorld.m11(); y < view.height(); y += param_matrixWorld.m11() )
linesY.append(QLineF(0, y, view.width(), y));
QFont f = painter->font();
int original_font_size = f.pointSize();
//change font size
//f.setPointSize(4+(param_matrixWorld.m11()-threshold_zoom_img_region)/5);
f.setPixelSize(10+(param_matrixWorld.m11()-threshold_zoom_img_region)/5);
painter->setFont(f);
QString val;
QRgb rgbValue;
QPointF point1;//sorry, I do not know how to name it
QPointF point2;//idem
for (int j=-1;j<height()/param_matrixWorld.m11();j++)//-1 because display the pixels top rows left colums
for (int i=-1;i<width()/param_matrixWorld.m11();i++)//-1
{
point1.setX((i+offsetX)*param_matrixWorld.m11());
point1.setY((j+offsetY)*param_matrixWorld.m11());
matrixWorld_inv.map(point1.x(),point1.y(),&point2.rx(),&point2.ry());
point2.rx()= (long) (point2.x() + 0.5);
point2.ry()= (long) (point2.y() + 0.5);
if (point2.x() >= 0 && point2.y() >= 0)
rgbValue = image2Draw_qt_resized.pixel(QPoint(point2.x(),point2.y()));
else
rgbValue = qRgb(0,0,0);
if (nbChannelOriginImage==CV_8UC3)
{
//for debug
/*
val = tr("%1 %2").arg(point2.x()).arg(point2.y());
painter->setPen(QPen(Qt::black, 1));
painter->drawText(QRect(point1.x(),point1.y(),param_matrixWorld.m11(),param_matrixWorld.m11()/2),
Qt::AlignCenter, val);
*/
val = tr("%1").arg(qRed(rgbValue));
painter->setPen(QPen(Qt::red, 1));
painter->drawText(QRect(point1.x(),point1.y(),param_matrixWorld.m11(),param_matrixWorld.m11()/3),
Qt::AlignCenter, val);
val = tr("%1").arg(qGreen(rgbValue));
painter->setPen(QPen(Qt::green, 1));
painter->drawText(QRect(point1.x(),point1.y()+param_matrixWorld.m11()/3,param_matrixWorld.m11(),param_matrixWorld.m11()/3),
Qt::AlignCenter, val);
val = tr("%1").arg(qBlue(rgbValue));
painter->setPen(QPen(Qt::blue, 1));
painter->drawText(QRect(point1.x(),point1.y()+2*param_matrixWorld.m11()/3,param_matrixWorld.m11(),param_matrixWorld.m11()/3),
Qt::AlignCenter, val);
}
if (nbChannelOriginImage==CV_8UC1)
{
val = tr("%1").arg(qRed(rgbValue));
painter->drawText(QRect(point1.x(),point1.y(),param_matrixWorld.m11(),param_matrixWorld.m11()),
Qt::AlignCenter, val);
}
}
painter->setPen(QPen(Qt::black, 1));
painter->drawLines(linesX.data(), linesX.size());
painter->drawLines(linesY.data(), linesY.size());
//restore font size
f.setPointSize(original_font_size);
painter->setFont(f);
}
void ViewPort::drawViewOverview(QPainter *painter)
{
QSize viewSize = size();
viewSize.scale ( 100, 100,Qt::KeepAspectRatio );
const int margin = 5;
//draw the image's location
painter->setBrush(QColor(0, 0, 0, 127));
painter->setPen(Qt::darkGreen);
painter->drawRect(QRect(width()-viewSize.width()-margin, 0,viewSize.width(),viewSize.height()));
//daw the view's location inside the image
qreal ratioSize = 1/param_matrixWorld.m11();
qreal ratioWindow = (qreal)(viewSize.height())/(qreal)(size().height());
painter->setPen(Qt::darkBlue);
painter->drawRect(QRectF(width()-viewSize.width()-positionCorners.left()*ratioSize*ratioWindow-margin,
-positionCorners.top()*ratioSize*ratioWindow,
(viewSize.width()-1)*ratioSize,
(viewSize.height()-1)*ratioSize)
);
}
void ViewPort::drawInstructions(QPainter *painter)
{
QFontMetrics metrics = QFontMetrics(font());
int border = qMax(4, metrics.leading());
QRect rect = metrics.boundingRect(0, 0, width() - 2*border, int(height()*0.125),
Qt::AlignCenter | Qt::TextWordWrap, infoText);
painter->setRenderHint(QPainter::TextAntialiasing);
painter->fillRect(QRect(0, 0, width(), rect.height() + 2*border),
QColor(0, 0, 0, 127));
painter->setPen(Qt::white);
painter->fillRect(QRect(0, 0, width(), rect.height() + 2*border),
QColor(0, 0, 0, 127));
painter->drawText((width() - rect.width())/2, border,
rect.width(), rect.height(),
Qt::AlignCenter | Qt::TextWordWrap, infoText);
}
#if defined( HAVE_QT_OPENGL )//all this section -> not tested
void ViewPort::initGL()
{
glShadeModel( GL_SMOOTH );
glHint( GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST );
glEnable( GL_TEXTURE_2D );
glEnable( GL_CULL_FACE );
glEnable( GL_DEPTH_TEST );
}
//from http://steinsoft.net/index.php?site=Programming/Code%20Snippets/OpenGL/gluperspective
//do not want to link glu
void ViewPort::icvgluPerspective(GLdouble fovy, GLdouble aspect, GLdouble zNear, GLdouble zFar)
{
GLdouble xmin, xmax, ymin, ymax;
ymax = zNear * tan(fovy * M_PI / 360.0);
ymin = -ymax;
xmin = ymin * aspect;
xmax = ymax * aspect;
glFrustum(xmin, xmax, ymin, ymax, zNear, zFar);
}
void ViewPort::setGL(int width, int height)
{
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
icvgluPerspective(angle, float(width) / float(height), zmin, zmax);
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glLoadIdentity();
}
void ViewPort::unsetGL()
{
glPopMatrix();
glMatrixMode(GL_PROJECTION);
glPopMatrix();
}
#endif
#endif
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