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//========================================================================
// The following example routines have been provided by the Technical
// Support staff at Borland International. They are provided as a
// courtesy and not as part of a Borland product, and as such, are
// provided without the assurance of technical support or any specific
// guarantees.
//========================================================================
//
// Ported and contributed by Joel <jso@europay.com>
//
// SET: 1999/12/05, Added an example to show how to stop and resume the
// application under Linux. Based in a test from Matt Mueller
// <donut@azstarnet.com>
//
//========================================================================
// To avoid pulling TScreen and signal.h for anything but UNIX
#include <tv/configtv.h>
#define Uses_string
#define Uses_TApplication
#define Uses_TBackground
#define Uses_TButton
#define Uses_TKeys
#define Uses_TDeskTop
#define Uses_TDialog
#define Uses_TMenu
#define Uses_TMenuBar
#define Uses_TMenuItem
#define Uses_TRect
#define Uses_TStaticText
#define Uses_TStatusDef
#define Uses_TStatusItem
#define Uses_TStatusLine
#ifdef TVOS_UNIX
#define Uses_TScreen
#define Uses_signal
#endif
#include <tv.h>
#define PATTERN 177
const int cmAbout = 100; // User selected menu item 'About'
char *lines[]=
{
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ÛÛÛÛÛÛÛÛÛÛ ÛÛÛÛÛÛÛÛÛÛ ÛÛÛÛÛÛÛÛÛÛ ",
" ÛÛÛÛÛÛÛÛÛÛ ÛÛÛÛÛÛÛÛÛÛ ÛÛÛÛÛÛÛÛÛÛ ",
" ÛÛÛÛ ÛÛÛÛ ÛÛÛÛ ",
" ÛÛÛÛ ÛÛÛÛ ÛÛÛÛ ",
" ÛÛÛÛÛÛÛÛÛÛ ÛÛÛÛÛÛÛ ÛÛÛÛ ",
" ÛÛÛÛÛÛÛÛÛÛ ÛÛÛÛ ÛÛÛÛ ",
" ÛÛÛÛ ÛÛÛÛ ÛÛÛÛ ",
" ÛÛÛÛ ÛÛÛÛ ÛÛÛÛ ",
" ÛÛÛÛÛÛÛÛÛÛ ÛÛÛÛÛÛÛÛÛÛ ÛÛÛÛ ",
" ÛÛÛÛÛÛÛÛÛÛ ÛÛÛÛÛÛÛÛÛÛ ÛÛÛÛ ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" "
};
//========================================================================
// class definitions
//------------------------------------------------------------------------
class TApp : public TApplication {
// main application class
public:
TApp();
static TMenuBar *initMenuBar( TRect r );
static TDeskTop *initDeskTop( TRect r );
void handleEvent( TEvent &event );
void AboutDialog();
};
//------------------------------------------------------------------------
class TNewDeskTop : public TDeskTop
{ // we derive a new desk top which will instantiate the background
// object with the character we select for the pattern
// also, the initBackground function is overridden to return
// our specialized TNewBackground
public:
TNewDeskTop( const TRect& r );
static TBackground* initBackground( TRect r );
};
//------------------------------------------------------------------------
class TNewBackground : public TBackground
{
public:
TNewBackground( const TRect& r, char pattern );
void draw();
};
//===========================================================================
// Draw the background
//===========================================================================
void TNewBackground::draw()
{
TDrawBuffer b;
for(int i= 0; i < size.y; i++)
{
for( int j= 0; j < size.x; j++)
{
if (i<25 && j<80)
b.moveChar( j, lines[i][j], getColor(0x01), 1 );
else
b.moveChar( j, ' ', getColor(0x01), 1 );
}
writeLine( 0, i, size.x, 1, b );
}
}
TApp::TApp() : TProgInit( &TApplication::initStatusLine,
&TApp::initMenuBar, &TApp::initDeskTop )
{
}
TMenuBar *TApp::initMenuBar( TRect r )
{
r.b.y = r.a.y + 1;
return( new TMenuBar( r, new TMenu(
*new TMenuItem( "~A~bout", cmAbout, kbAltA, hcNoContext, 0 )
) ) );
}
//------------------------------------------------------------------------
// redefine desktop initialization to cause usage of newly
// defined desktop
//------------------------------------------------------------------------
TDeskTop *TApp::initDeskTop( TRect r )
{
// initDeskTop is passed a TRect which is the size of the
// application's window - in our case the whole screen
r.a.y++;
r.b.y--;
return ( new TNewDeskTop( r ) );
}
#ifdef TVOS_UNIX
void ResumeApp(int signum)
{
TProgram::application->resume();
TProgram::deskTop->setState(sfVisible,True);
TProgram::deskTop->redraw();
TProgram::application->redraw();
}
#endif
void TApp::handleEvent (TEvent &event)
{
// override the handleEvent so we can call the about box
TApplication::handleEvent( event );
if( event.what == evCommand )
{
switch( event.message.command )
{
case cmAbout:
{
AboutDialog();
clearEvent( event );
break;
}
}
}
#ifdef TVOS_UNIX
else
if( event.what == evKeyDown && event.keyDown.keyCode == kbCtrlZ )
{
suspend();
signal(SIGCONT,ResumeApp);
kill(0,SIGSTOP);
}
#endif
}
//------------------------------------------------------------------------
// create modal About dialog box
//------------------------------------------------------------------------
void TApp::AboutDialog()
{
TDialog *pd = new TDialog( TRect( 0, 0, 35, 12 ), "About" );
if (pd)
{
pd->options |= ofCentered;
pd->insert( new TStaticText( TRect( 1, 2, 34, 7 ),
"\003Turbo Vision Example\n\003\n"
"\003Modifying the desk top\n\003\n"
"\003Borland Technical Support"));
pd->insert( new TButton( TRect( 3,9,32,11 ), "~O~k",
cmOK, bfDefault ) );
deskTop->execView( pd );
}
CLY_destroy( pd );
}
//========================================================================
// implementation of TNewDeskTop
//------------------------------------------------------------------------
TNewDeskTop::TNewDeskTop( const TRect& r ) :
TDeskInit( &initBackground ),
TDeskTop( r )
{
}
//------------------------------------------------------------------------
TBackground *TNewDeskTop::initBackground( TRect r )
{
// initializing the TBackground object allows us
// to pass it a character for the desktop pattern
return new TNewBackground( r, PATTERN );
}
//========================================================================
// implementation of TNewBackground
//------------------------------------------------------------------------
TNewBackground::TNewBackground( const TRect& r, char pattern ) :
TBackground( r, pattern )
{
}
//========================================================================
int main(void)
{
TApp myApp;
myApp.run();
return 0;
}
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