sdlguitest.cpp

游戏开发数据结构Data Structures for Game Programmers

// ============================================================================
// Data Structures For Game Programmers
// Ron Penton
// SDLGUITest.h
// Simple test frame for the SDLGUI library
// ============================================================================

// ============================================================================
#include "SDLGUI.h"
#include <string.h>

// ============================================================================
//  Global Constants
// ============================================================================
const char PROGRAM_NAME[]   = "INSERT PROGRAM NAME HERE";
const int WIDTH             = 640;
const int HEIGHT            = 480;
const int ITEMS             = 32;


// ============================================================================
//  Global Variables
// ============================================================================
SDLGUI* g_gui;


char g_string1[128] = "";
char g_string2[128] = "";


void ButtonFunc()
{
    if( g_gui->GetItem( 0 )->Visible() )
        g_gui->GetItem( 0 )->SetVisibility( false );
    else
        g_gui->GetItem( 0 )->SetVisibility( true );
}


void CheckFunc()
{
    static bool check = false;
    check = !check;

    if( check == true )
        g_gui->GetItem( 1 )->SetVisibility( true );
    else
        g_gui->GetItem( 1 )->SetVisibility( false );
}



void Text1Func()
{
    strcpy( g_string2, g_string1 );
}

void Text2Func()
{
    strcpy( g_string1, g_string2 );
}


int main( int argc, char* argv[] )
{
    // declare coordinates.
    int x, y;

    // declare event holder
    SDL_Event event;

    // set our at exit function
    atexit( SDL_Quit );

    //initialize systems
    SDL_Init( SDL_INIT_VIDEO | SDL_INIT_TIMER );
    TTF_Init();

    // create the GUI and set the caption.
    g_gui = new SDLGUI( WIDTH, HEIGHT, ITEMS, WHITE );
    SDL_WM_SetCaption( PROGRAM_NAME, 0); 


    // add your GUI items here.
    g_gui->SetFont( "ARIAL.TTF", 0, 18, TTF_STYLE_NORMAL );

    g_gui->AddLabel( 0, 0, "Testing, one two three!", 0, BLACK, WHITE );
    g_gui->AddLabel( 320, 0, "MOOOO!", 0, BLUE, WHITE );
    g_gui->GetItem( 1 )->SetVisibility( false );
    
    g_gui->AddButton( 20, 50, "gbup.bmp", "gbdown.bmp", 
                      "Test Button!", 0, BLACK, WHITE, ButtonFunc );

    g_gui->AddCheckbox( 320, 50, "checkboxup.bmp", "checkboxdown.bmp",
                        "CLICKY!", 0, RED, WHITE, CheckFunc );

    
    g_gui->AddTextBox( 10, 150, 256, TTF_FontHeight(g_gui->GetFont(0)),
                       g_string1, 128, 0, BLACK, WHITE, Text1Func );
    g_gui->AddTextBox( 320, 150, 128, TTF_FontHeight(g_gui->GetFont(0)),
                       g_string2, 128, 0, GREEN, WHITE, Text2Func );

                        
    // main message loop.
    while( 1 )
    {
        //look for an event
        if( SDL_PollEvent( &event ) )
        {
            //an event was found
            if( event.type == SDL_QUIT ) 
                break;
            if( event.type == SDL_MOUSEBUTTONDOWN ) 
            {
                // get the mouse state.
                SDL_GetMouseState( &x, &y );

                // tell the GUI that a button has been pressed
                g_gui->MouseDown( x, y );
            }
            if( event.type == SDL_MOUSEBUTTONUP ) 
            {
                // get the mouse state.
                SDL_GetMouseState( &x, &y );

                // tell the GUI that a button has been released
                g_gui->MouseUp( x, y );
            }
            if( event.type == SDL_KEYDOWN )
            {
                // a key was pressed.
                if( event.key.keysym.sym == SDLK_ESCAPE )
                {
                    // if ESC was pressed, quit the program.
                    SDL_Event quit;
                    quit.type = SDL_QUIT;
                    SDL_PushEvent( &quit );
                }


                // tell the GUI that a key was pressed.
                g_gui->KeyDown( event.key.keysym.sym, event.key.keysym.mod );
            }
        }   // end event loop.

        // do all game-related stuff here.



        // tell the GUI to redraw itself
        g_gui->Draw();



        // DO ALL YOUR RENDERING HERE



        // tell the GUI to update itself
        g_gui->Update();

    }
  
    // done
    return 0;
}