VIZ++ Samples

1 Screenshot

2 Source code

/*
 * PopupMenu.cpp 
 * Copyright (c) 2015 Antillia.com TOSHIYUKI ARAI. ALL RIGHTS RESERVED. 
 */


//2015/08/2 Updated
//2017/02/10 Updated.

#include <viz++/opengl/OpenGLMainView.h>
#include <viz++/opengl/OpenGLGC.h>
#include <viz++/opengl/OpenGLTexture2D.h>
#include <viz++/opengl/OpenGLDialog.h>
#include <viz++/opengl/OpenGLFileOpenDialog.h>
#include <viz++/opengl/OpenGLBitmap.h>
#include <viz++/opengl/OpenGLPopupMenu.h>
#include <viz++/opengl/OpenGLFileSaveDialog.h>
#include "resource.h"

//#include <viz++/StringT.h>

namespace VIZ {

class MainView :public OpenGLMainView {

private:
   typedef enum {
     SAVEAS_JPG = 500,
     SAVEAS_PNG,
     HELP
   } MENU_ID;

  SmartPtr<OpenGLGC>        gc;
  SmartPtr<OpenGLTexture2D> texture;
  SmartPtr<OpenGLPopupMenu> popupMenu;

public:
  virtual void display()
  {
    if (gc && texture) {
      gc -> clearColor(1.0, 1.0, 1.0, 1.0);
      gc -> clear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
      gc -> color(1.0, 1.0, 1.0);
      //gc -> rotate(5.0, 0.5, 1.0, 0.25);

      glNormal3d(0.0, 0.0, 1.0);
      gc -> begin(GL_QUADS);
      texture -> coord(0.0, 0.0); 
      gc-> vertex(-1.0,  1.0, 0.0);

      texture -> coord(1.0, 0.0); 
      gc ->vertex( 1.0,  1.0, 0.0);

      texture -> coord(1.0, 1.0); 
      gc -> vertex( 1.0, -1.0, 0.0);

      texture -> coord(0.0, 1.0); 
      gc -> vertex(-1.0, -1.0, 0.0);
      gc -> end();
    }
  }
  
  virtual void resize(int w, int h)
  {
    if (w == 0 || h == 0) {
        return;
    }
    if (gc) {
      gc -> matrixMode(GL_PROJECTION);
      gc -> loadIdentity();
      gc -> ortho(-1.25, 1.25, -1.25, 1.25, 1., 20.);

      gc -> matrixMode(GL_MODELVIEW);
      gc -> loadIdentity();
      gc -> lookAt(0., 0., 10., 0., 0., 0., 0., 1., 0.);
    }
  }
  
  virtual void initialize()
  {
    gc = new OpenGLGC();
    gc -> enable(GL_DEPTH_TEST);
    gc -> enable(GL_TEXTURE_2D);

    const char* file = "./images/YellowFlower.jpg";

    createTexture(file);
  }

  void createTexture(const char* filename)
  {
    if (texture) {
      texture = NULL;
    } 
    texture = new OpenGLTexture2D();
    texture -> bind();
    texture -> parameter(GL_TEXTURE_MIN_FILTER, GL_LINEAR);
    texture -> parameter(GL_TEXTURE_MAG_FILTER, GL_LINEAR);
    texture -> env(GL_TEXTURE_ENV_MODE, GL_MODULATE); 
    try {
      texture -> imageFromFile(filename);
    } catch (Exception& ex) {
      caught(ex);
    }
  }

  virtual void menuCallback(WORD menuId)
  {
    HWND hwnd = getHwnd();
    char message[1024];
    sprintf_s(message, CountOf(message), "Default menu callback. MenuId(%d)", menuId);
    switch (menuId) {
    case IDM_EXIT:
      {
        int rc = MessageBox(hwnd, "Are you sure to want to exit this program?", "Confirmation",  MB_OKCANCEL|MB_ICONINFORMATION);
        if (rc == IDOK) {
          ::PostQuitMessage(0);
        }
      }
      break;
    case SAVEAS_JPG:
      saveImage();      
      break;
      
    case IDM_VERSION:
      MessageBox(hwnd, "VIZ++  Copyright(C) Antillia.com 2017", "Version",  MB_OK|MB_ICONINFORMATION);
      break;
      
    default:
      MessageBox(hwnd, message, "MenuCallback", MB_OK|MB_ICONINFORMATION);
    }
  }
  
  void saveImage()
  {
    StringT<char> folderName;
    getModuleFolderName(folderName);
    printf("moduleFolder %s\n", (const char*)folderName);

    OpenGLFileSaveDialog dialog(this, 
                         (const char*)folderName,
                         "JPG Files (*.jpg)\0*.jpg\0All Files (*.*)\0*.*\0", 
                         "jpg");
       
    if (dialog.popup() ) {
      int width = 0;
      int height = 0;
      getWindowSize(width, height);

      StringT<char> name;
      dialog.getFileName(name);    
      const char* filename = (const char*)name;
      int rw = (width/8)*8;
      OpenGLBitmap bitmap(0, 0, rw, height, 24, GL_RGB);
      try {
        bitmap.read(GL_FRONT);
        bitmap.saveAsJPG(filename);
        printf("Saved a bitmap image of current OpenGLMainView to %s\n", filename); 
        const char* name = filename;
        const char* slash = strrchr(filename, '\\');
        if (slash) {
           name = ++slash;
         }
         char title[MAX_PATH];
         sprintf(title, "%s - %s", name, getTitle()); 
         setWindowTitle(title);
       } catch (Exception& ex) {
        caught(ex);    
       }
    }
  }

  virtual void mouseButtonCallback(int button, int action, int mods)
  {
     if (button ==RIGHT_BUTTON && action == BUTTON_DOWN) {
       StringT<char> folderName;
       getModuleFolderName(folderName);
       printf("moduleFolder %s\n", (const char*)folderName);
       popupMenu -> popup();
     }
  }
  
public:
  MainView(OpenGLApplet& applet, int width, int height, const char* name)
  :OpenGLMainView(applet, width, height, name)
  {
    enableMouseButtonCallback();
    static MenuItem items[] = {
      {MF_STRING, SAVEAS_JPG,   MFS_ENABLED,  "SaveAs JPG"}, // NULL, 0},
      {MF_STRING, SAVEAS_PNG,   MFS_DISABLED, "SavaAs PNG"}, // NULL, 0},
      {MF_SEPARATOR, 0,       0,              NULL},         // NULL, 0},
      {MF_STRING, HELP,       MFS_DISABLED,  "Help"},        // NULL, 0},
    };

    popupMenu = new OpenGLPopupMenu(this, items, CountOf(items));

  }

  ~MainView()
  {
  }
};
}

//
int main(int argc, char** argv) 
{
  try {
    ModuleFileName module;
    const char*  name = module.getAppName();
    OpenGLApplet applet(argc, argv);

    MainView view(applet, 500, 400, name);
    view.realize();
    applet.run();
    
  } catch (Exception& ex) {
    caught(ex);
  }
  return 0;
}