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opencv/modules/highgui/src/window_QT.h
Yannick Verdie c3eb7881f1 New functions with QT GUI: 
- 3 new points mostly done:
      - OpenGL support enabled (windows are rendered using GPU)
      - Save current screen (with overlay and so on...) with shortcut CTRL+S
      - Text rendering (with any system font, and possibility to set the style - normal, italic,... - the weight - normal, bold, ... - the color, the spacing between letters, and so on...)
2010-07-12 11:04:26 +00:00

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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--------------------//
#ifndef __OPENCV_HIGHGUI_QT_H__
#define __OPENCV_HIGHGUI_QT_H__
#include "precomp.hpp"
#if defined(OPENCV_GL)
#include <QtOpenGL>
#include <QGLWidget>
#endif
#include <QAbstractEventDispatcher>
#include <QtGui/QApplication>
#include <QFile>
#include <QPushButton>
#include <QtGui/QGraphicsView>
#include <QSizePolicy>
#include <QInputDialog>
#include <QtGui/QBoxLayout>
#include <QSettings>
#include <qtimer.h>
#include <QtConcurrentRun>
#include <QWaitCondition>
#include <QKeyEvent>
#include <QMetaObject>
#include <QPointer>
#include <QSlider>
#include <QLabel>
#include <QIODevice>
#include <QShortcut>
#include <QStatusBar>
#include <QVarLengthArray>
#include <QFileInfo>
#include <QDate>
#include <QFileDialog>
//start enum
enum {CV_MODE_NORMAL= 0, CV_MODE_OPENGL = 1};
//we can change the keyboard shortcuts from here !
enum { shortcut_zoom_normal = Qt::CTRL + Qt::Key_Z,
shortcut_zoom_imgRegion = Qt::CTRL + Qt::Key_X,
shortcut_save_img = Qt::CTRL + Qt::Key_S,
shortcut_properties_win = Qt::CTRL + Qt::Key_P,
shortcut_zoom_in = Qt::CTRL + Qt::Key_Plus,//QKeySequence(QKeySequence::ZoomIn),
shortcut_zoom_out = Qt::CTRL + Qt::Key_Minus,//QKeySequence(QKeySequence::ZoomOut),
shortcut_panning_left = Qt::CTRL + Qt::Key_Left,
shortcut_panning_right = Qt::CTRL + Qt::Key_Right,
shortcut_panning_up = Qt::CTRL + Qt::Key_Up,
shortcut_panning_down = Qt::CTRL + Qt::Key_Down
};
//end enum
class CvWindow;
class ViewPort;
class GuiReceiver : public QObject
{
Q_OBJECT
public:
GuiReceiver();
int start();
bool _bTimeOut;
private:
public slots:
void createWindow( QString name, int flags = 0 );
void destroyWindow(QString name);
void destroyAllWindow();
void addSlider(QString trackbar_name, QString window_name, void* value, int count, void* on_change);
void moveWindow(QString name, int x, int y);
void resizeWindow(QString name, int width, int height);
void showImage(QString name, void* arr);
void displayInfo( QString name, QString text, int delayms );
void displayStatusBar( QString name, QString text, int delayms );
void timeOut();
void toggleFullScreen(QString name, double flags );
double isFullScreen(QString name);
double getPropWindow(QString name);
void setPropWindow(QString name, double flags );
double getRatioWindow(QString name);
void setRatioWindow(QString name, double arg2 );
void saveWindowParameters(QString name);
void loadWindowParameters(QString name);
void setOpenGLCallback(QString window_name, void* callbackOpenGL, void* userdata);
void putText(void* arg1, QString text, QPoint org, void* font);
};
class CvTrackbar : public QHBoxLayout
{
Q_OBJECT
public:
CvTrackbar(CvWindow* parent, QString name, int* value, int count, CvTrackbarCallback on_change = NULL);
~CvTrackbar();
QString trackbar_name;
QPointer<QSlider> slider;
private slots:
void createDialog();
void update(int myvalue);
private:
void setLabel(int myvalue);
QString createLabel();
QPointer<QPushButton > label;
CvTrackbarCallback callback;
QPointer<CvWindow> parent;
int* dataSlider;
};
class CvWindow : public QWidget
{
Q_OBJECT
public:
CvWindow(QString arg2, int flag = CV_WINDOW_NORMAL);
~CvWindow();
void addSlider(QString name, int* value, int count, CvTrackbarCallback on_change = NULL);
void setMouseCallBack(CvMouseCallback m, void* param);
void updateImage(void* arr);
void displayInfo(QString text, int delayms );
void displayStatusBar(QString text, int delayms );
void readSettings();
void writeSettings();
void setOpenGLCallback(CvOpenGLCallback arg1,void* userdata);
ViewPort* getView();
QPointer<QBoxLayout> layout;
QPointer<QStatusBar> myBar;
QPointer<QLabel> myBar_msg;
//parameters (will be save/load)
QString param_name;
int param_flags;
protected:
virtual void keyPressEvent(QKeyEvent *event);
private:
QPointer<ViewPort> myview;
QPointer<QShortcut> shortcut_Z;
QPointer<QShortcut> shortcut_S;
QPointer<QShortcut> shortcut_P;
QPointer<QShortcut> shortcut_X;
QPointer<QShortcut> shortcut_Plus;
QPointer<QShortcut> shortcut_Minus;
QPointer<QShortcut> shortcut_Left;
QPointer<QShortcut> shortcut_Right;
QPointer<QShortcut> shortcut_Up;
QPointer<QShortcut> shortcut_Down;
void icvLoadTrackbars(QSettings *settings);
void icvSaveTrackbars(QSettings *settings);
};
enum type_mouse_event {mouse_up = 0, mouse_down = 1, mouse_dbclick = 2, mouse_move = 3};
static const int tableMouseButtons[][3]={
{CV_EVENT_LBUTTONUP,CV_EVENT_RBUTTONUP,CV_EVENT_MBUTTONUP}, //mouse_up
{CV_EVENT_LBUTTONDOWN,CV_EVENT_RBUTTONDOWN,CV_EVENT_MBUTTONDOWN}, //mouse_down
{CV_EVENT_LBUTTONDBLCLK,CV_EVENT_RBUTTONDBLCLK,CV_EVENT_MBUTTONDBLCLK}, //mouse_dbclick
{CV_EVENT_MOUSEMOVE,CV_EVENT_MOUSEMOVE,CV_EVENT_MOUSEMOVE} //mouse_move
};
class ViewPort : public QGraphicsView
{
Q_OBJECT
public:
ViewPort(CvWindow* centralWidget, int mode = CV_MODE_NORMAL, int keepRatio = CV_WINDOW_KEEPRATIO);
~ViewPort();
void updateImage(void* arr);
void startDisplayInfo(QString text, int delayms);
void setMouseCallBack(CvMouseCallback m, void* param);
void setOpenGLCallback(CvOpenGLCallback func,void* userdata);
int getRatio();
void setRatio(int arg);
//parameters (will be save/load)
QTransform param_matrixWorld;
int param_keepRatio;
IplImage* image2Draw_ipl;
QImage image2Draw_qt;
QImage image2Draw_qt_resized;
int mode_display;//opengl or native
int nbChannelOriginImage;
public slots:
//reference:
//http://www.qtcentre.org/wiki/index.php?title=QGraphicsView:_Smooth_Panning_and_Zooming
//http://doc.qt.nokia.com/4.6/gestures-imagegestures-imagewidget-cpp.html
void scaleView(qreal scaleFactor, QPointF center);
void imgRegion();
void moveView(QPointF delta);
void resetZoom();
void ZoomIn();
void ZoomOut();
void siftWindowOnLeft();
void siftWindowOnRight();
void siftWindowOnUp() ;
void siftWindowOnDown();
void resizeEvent ( QResizeEvent * );
void saveView();
private:
QPoint mouseCoordinate;
QPointF positionGrabbing;
QRect positionCorners;
QTransform matrixWorld_inv;
float ratioX, ratioY;
//for mouse callback
CvMouseCallback on_mouse;
void* on_mouse_param;
//for opengl callback
CvOpenGLCallback on_openGL_draw3D;
void* on_openGL_param;
bool isSameSize(IplImage* img1,IplImage* img2);
QSize sizeHint() const;
QPointer<CvWindow> centralWidget;
QPointer<QTimer> timerDisplay;
bool drawInfo;
QString infoText;
//QImage* image;
void paintEvent(QPaintEvent* paintEventInfo);
void wheelEvent(QWheelEvent *event);
void mouseMoveEvent(QMouseEvent *event);
void mousePressEvent(QMouseEvent *event);
void mouseReleaseEvent(QMouseEvent *event);
void mouseDoubleClickEvent(QMouseEvent *event);
void drawInstructions(QPainter *painter);
void drawViewOverview(QPainter *painter);
void drawImgRegion(QPainter *painter);
void draw2D(QPainter *painter);
void drawStatusBar();
void controlImagePosition();
void icvmouseHandler(QMouseEvent *event, type_mouse_event category, int &cv_event, int &flags);
void icvmouseProcessing(QPointF pt, int cv_event, int flags);
#if defined(OPENCV_GL)
void draw3D();
void unsetGL();
void initGL();
void setGL(int width, int height);
void icvgluPerspective(GLdouble fovy, GLdouble aspect, GLdouble zNear, GLdouble zFar);
#endif
private slots:
void stopDisplayInfo();
};
//here css for trackbar
/* from http://thesmithfam.org/blog/2010/03/10/fancy-qslider-stylesheet */
static const QString str_Trackbar_css = QString("")
+ "QSlider::groove:horizontal {"
+ "border: 1px solid #bbb;"
+ "background: white;"
+ "height: 10px;"
+ "border-radius: 4px;"
+ "}"
+ "QSlider::sub-page:horizontal {"
+ "background: qlineargradient(x1: 0, y1: 0, x2: 0, y2: 1,"
+ "stop: 0 #66e, stop: 1 #bbf);"
+ "background: qlineargradient(x1: 0, y1: 0.2, x2: 1, y2: 1,"
+ "stop: 0 #bbf, stop: 1 #55f);"
+ "border: 1px solid #777;"
+ "height: 10px;"
+ "border-radius: 4px;"
+ "}"
+ "QSlider::add-page:horizontal {"
+ "background: #fff;"
+ "border: 1px solid #777;"
+ "height: 10px;"
+ "border-radius: 4px;"
+ "}"
+ "QSlider::handle:horizontal {"
+ "background: qlineargradient(x1:0, y1:0, x2:1, y2:1,"
+ "stop:0 #eee, stop:1 #ccc);"
+ "border: 1px solid #777;"
+ "width: 13px;"
+ "margin-top: -2px;"
+ "margin-bottom: -2px;"
+ "border-radius: 4px;"
+ "}"
+ "QSlider::handle:horizontal:hover {"
+ "background: qlineargradient(x1:0, y1:0, x2:1, y2:1,"
+ "stop:0 #fff, stop:1 #ddd);"
+ "border: 1px solid #444;"
+ "border-radius: 4px;"
+ "}"
+ "QSlider::sub-page:horizontal:disabled {"
+ "background: #bbb;"
+ "border-color: #999;"
+ "}"
+ "QSlider::add-page:horizontal:disabled {"
+ "background: #eee;"
+ "border-color: #999;"
+ "}"
+ "QSlider::handle:horizontal:disabled {"
+ "background: #eee;"
+ "border: 1px solid #aaa;"
+ "border-radius: 4px;"
+ "}";
#endif
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