Listing 3: Source file for drawApp cmdwin class

//================================================================
//  drawcmdw.cxx:
//  Copyright (C) 1995  Bruce E. Wampler
//================================================================
#include <v/include/vnotice.h>  // so we can use notice
#include <v/include/vpen.h>     // for drawing pen
#include <v/include/vfilesel.h> // for file selection

#include "drawcmdw.h"   // our header

//   Start defines for the main window with 100
const ItemVal m_Clear = 100;
const ItemVal m_LineWidth = 101;
const ItemVal m_ChangePen = 102;

static vMenu FileMenu[] =    // File pulldown menu
  {
    {"New", M_New, isSens, notChk, noKeyLbl, noKey, noSub},
    {"Open", M_Open, isSens, notChk, noKeyLbl, noKey, noSub},
    {"Save", M_Save, isSens, notChk, noKeyLbl, noKey, noSub},
    {"Save As", M_SaveAs, isSens,notChk,noKeyLbl,noKey,noSub},
    {"-", M_Line, notSens, notChk, noKeyLbl, noKey, noSub},
    {"Exit", M_Exit, isSens, notChk, noKeyLbl, noKey, noSub},
    {NULL}
  };
static vMenu EditMenu[] =    // Edit menu
  {
    {"Clear", m_Clear, isSens, notChk, noKeyLbl, noKey,noSub},
    {NULL}
  };
vMenu MainMenu[] =           // Main menu
  {
    {"File",M_File,isSens,notUsed,notUsed,noKey,&FileMenu[0]},
    {"Edit",M_Edit,isSens,notUsed,notUsed,noKey,&EditMenu[0]},
    {NULL}
  };

// Define the command bar
static int minMaxStep[3] = {1, 20, 1};    // for line width
static CommandObject CommandBar[] =
  {
    {C_Button, m_Clear, m_Clear, "Clear", NoList,
            CA_None,isSens,NoFrame,0,0},
    {C_Label, 999, 0 ," Pen Width: ", NoList,
            CA_None, isSens, NoFrame,0,0},
    {C_ValueBox,m_LineWidth,1,"",(void*)&minMaxStep[0],
            CA_None,isSens,NoFrame,0,0},
    {C_Label, 999, 0, " Pen Color: ",NoList,
            CA_None,isSens,NoFrame,0,0},
#define vC_Size 12              // size of color buttons
#include <v/include/vcb2x8.h>   // define a color selection box
    {C_EndOfList,0,0,0,0,CA_None,0,0,0}
  };
//================>>> myCmdWindow::myCmdWindow <<<================
myCmdWindow::myCmdWindow(char* name, int height, int width) :
  vCmdWindow(name, height, width)
{
  // Create and add the proper panes to the CmdWindow

  *_fname = 0;                        // no name

  myMenu = new vMenuPane(MainMenu);   // Add the main menu
  AddPane(myMenu);

  myCanvas = new myCanvasPane;        // Add the canvas pane
  AddPane(myCanvas);

  myCmdPane = new vCommandPane(CommandBar); // Add command pane
  AddPane(myCmdPane);

  ShowWindow();           // FINALLY, we must show the window!
}

//===============>>> myCmdWindow::~myCmdWindow <<<================
myCmdWindow::~myCmdWindow()
{
  delete myMenu;      // Delete everything new'ed in
  delete myCanvas;    //   the constructor
  delete myCmdPane;
}

//==============>>> myCmdWindow::WindowCommand <<<================
void myCmdWindow::WindowCommand(ItemVal id, ItemVal val,
      CmdType cType)
{
  // route all commands through here - menus and buttons

  static char* filter[] = {"*.drw","*", 0};   // file filter
  int fi = 0;                  // filter index
  vNoticeDialog note(this);    // for user notification

  switch (id)                  // switch on id of commands
    {
      case M_New:
        {
          // call our NewAppWin method
          theApp->NewAppWin(0,"V Draw - No Name",250,500,0);
          break;
        }

      case M_Open:
        {
          if (*_fname)
            {
              note.Notice("Create a New window first.");
              break;
            }

          vFileSelect fsel(this);     // V file select dialog
          if (!fsel.FileSelect("Open V Draw File",
            _fname,99,filter,fi) || !*_fname)
              break;                  // ignore if no selection

          if (!myCanvas->Read(_fname)) // Save in _fname

            {
              note.Notice("Unable to read file");
              break;
            }
          SetTitle(_fname);           // show on title bar
          myCanvas->Redraw(0,0,0,0);  // paint it
          break;
        }

      case M_Save:
        {
          if (*_fname)                 // have a name
            {
              if (!myCanvas->Save(_fname)) // Save in _fname
                  note.Notice("Unable to save file");
              break;
            }
          // else fall through to SaveAs
        }

      case M_SaveAs:
        {
          vFileSelect fsel(this);     // V file select dialog
          if (!fsel.FileSelect("Save V Draw File As",
            _fname,99,filter,fi) || !*_fname)
              break;                  // ignore if no selection
          if (!myCanvas->Save(_fname)) // Save in _fname
            {
              note.Notice("Unable to read file");
              break;
            }
          SetTitle(_fname);
          break;
        }

      case M_Exit:
        {
          theApp->Exit();       // Standard action for Exit
          break;
        }

      case m_LineWidth:
        {
          _pen.penWidth = val;        // set new pen width
          myCanvas->SetPen(_pen);
          break;
        }

      case m_Clear:                  // clear the screen
        {
          myCanvas->Clear();
          break;
        }

      default:                       // change pen color?
        {
          if (id >= M_Black && id <= M_White)  // color button
            {
              _pen.penColor = vStdColors[val];
              myCanvas->SetPen(_pen);
            }
          else                      // pass up hierarchy
              vCmdWindow::WindowCommand(id, val, cType);
          break;
        }
    }
}
//End of File