DÉBUT D'UN "PAINT" EN SDL

/*

Tampon

Par HENAULT Jason

Programme qui consiste en une "immitation" du logiciel paint de windows : 
le but est de créé des dessins grace à plusieur tampon et pouvoir et enregister par la suite.

Créé le Vendredi 10 aout 2007.

Màj : 20/08/07              + Correction des l'allocation dynamique pour eviter le stackk overflow

*/


/////////////////////////
#include <stdlib.h>    // Inclusion des headers
#include <stdio.h>     //
#include <SDL/SDL.h>   //
/////////////////////////
#include "main.h"      // Inclusion des headers de main.h
/////////////////////////

int main(int argc, char *argv[])
{
	// Définition des variables
	SDL_Surface *ecran, *tmp, *pen, *tmpTmp, *penTmp;
	SDL_Rect postmp, pospen, postmpTmp, pospenTmp;
	SDL_Event event;

	int continuer = 1, mouseDown = 0, chxTmp = PEN, nmbTmp = NMBTMP, i = 0, j = 0, clickLeft = 0, e = 0, z = 0;

	int (*memPos)[NMBTMP][NMBPIXELW][NMBPIXELH] = NULL;
	memPos = (int (*)[NMBTMP][NMBPIXELW][NMBPIXELH]) malloc((NMBTMP * sizeof(int)) * (NMBPIXELW * sizeof(int)) * (NMBPIXELH* sizeof(int))) ;
	///////////////////////////


	// Initialisation de la fenêtre	
	SDL_Init(SDL_INIT_VIDEO);
	SDL_WM_SetIcon(SDL_LoadBMP("pen.bmp"), NULL);
	SDL_WM_SetCaption("Tampon - Crayon", NULL);
    ecran = SDL_SetVideoMode(NMBPIXELWres, NMBPIXELHres, 32, SDL_HWSURFACE | SDL_RESIZABLE | SDL_DOUBLEBUF);
	SDL_FillRect(ecran, NULL, SDL_MapRGB(ecran->format, 255, 255, 255));
	///////////////////////////////


	// Description des sprites
	tmp = SDL_LoadBMP("tmp.bmp");
	SDL_SetColorKey(tmp, SDL_SRCCOLORKEY, SDL_MapRGB(ecran ->format, 255, 255, 255));
	
	tmpTmp = SDL_LoadBMP("tmpTmp.bmp");
	SDL_SetColorKey(tmpTmp, SDL_SRCCOLORKEY, SDL_MapRGB(ecran ->format, 255, 255, 255));

	pen = SDL_LoadBMP("pen.bmp");
	SDL_SetColorKey(pen, SDL_SRCCOLORKEY, SDL_MapRGB(ecran ->format, 255, 255, 255));

	penTmp = SDL_LoadBMP("penTmp.bmp");
	//////////////////////////


	// Chargement du moteur opératif
	SDL_ShowCursor(SDL_DISABLE);
	while (continuer)
	{
		SDL_WaitEvent (&event);

		switch (event.type)
		{
		case SDL_QUIT:  // Si on appuie sur la croix de fermeture
			exit(EXIT_SUCCESS);
			break;
		
		case SDL_KEYDOWN:  // Si une touche est pressé
			switch (event.key.keysym.sym)
			{
			case SDLK_ESCAPE:
				exit(EXIT_SUCCESS);

			case SDLK_DELETE:
				z = 0;
				e = 0;

				do
				{
				for (z = 0; z < NMBPIXELW; z++)
				{
				(*memPos)[PEN][z][e] = 0;
				}
				e++;
				}while(e != NMBPIXELH && z == NMBPIXELW);

				z = 0;
				e = 0;

				do
				{
				for (z = 0; z < NMBPIXELW; z++)
				{
				(*memPos)[TMP][z][e] = 0;
				}
				e++;
				}while(e != NMBPIXELH && z == NMBPIXELW);
				
				break;
			}
			break;

		case SDL_MOUSEMOTION:  // Si la souris a été bougée
				pospen.x = event.motion.x;
				pospen.y = event.motion.y;
				postmp.x = event.motion.x;
				postmp.y = event.motion.y;
				postmpTmp.x = event.motion.x;
				postmpTmp.y = event.motion.y;
				pospenTmp.x = event.motion.x;
				pospenTmp.y = event.motion.y;
				break;

		case SDL_MOUSEBUTTONUP:
			switch (event.button.button)
			{
			case SDL_BUTTON_LEFT:
				clickLeft = 0;
				break;
			}
			break;

		case SDL_MOUSEBUTTONDOWN:  // Si un bouton de la souris et appyer
			switch (event.button.button)
			{
			case SDL_BUTTON_WHEELUP:  // Roulette haut
				chxTmp++;
				if (chxTmp != nmbTmp && chxTmp >= 0)
				{
				switch (chxTmp)
				{
				case PEN:
					SDL_WM_SetIcon(SDL_LoadBMP("pen.bmp"), NULL);
				    SDL_WM_SetCaption("Tampon - Crayon", NULL);
					break;

				case TMP:
					SDL_WM_SetIcon(SDL_LoadBMP("tmp.bmp"), NULL);
				    SDL_WM_SetCaption("Tampon - Point", NULL);
				break;
				}
				}
				else
					chxTmp--;
				break;

			case SDL_BUTTON_WHEELDOWN:  // Roullette bas
				chxTmp--;
				if (chxTmp != nmbTmp && chxTmp >= 0)
				{
				switch (chxTmp)
				{
				case PEN:
					SDL_WM_SetIcon(SDL_LoadBMP("pen.bmp"), NULL);
				    SDL_WM_SetCaption("Tampon - Crayon", NULL);
					break;

				case TMP:
					SDL_WM_SetIcon(SDL_LoadBMP("tmp.bmp"), NULL);
				    SDL_WM_SetCaption("Tampon - Point", NULL);
				break;
				}
				}
				else
					chxTmp++;
				break;

			case SDL_BUTTON_LEFT:  // Boutton gauche
				clickLeft = 1;
			    break;
			}
			break;

		

		case SDL_VIDEORESIZE:  // Si on modifie la taille de la fenêtre
			ecran = SDL_SetVideoMode(event.resize.w, event.resize.h, 32, SDL_HWSURFACE| SDL_RESIZABLE);
			realloc(*memPos, ((NMBPIXELW * sizeof(int)) * (NMBPIXELW * sizeof(int)) * (NMBPIXELH* sizeof(int))));
			break;

		}
		
		if(clickLeft == 1)
		{
			if (chxTmp == PEN)
				(*memPos)[chxTmp][event.motion.x][event.motion.y + pen->h] = 1;
			else if (chxTmp == TMP)
				(*memPos)[chxTmp][event.motion.x + (tmp->w / 2)][event.motion.y + (tmp->h / 2)] = 1;
		}

		SDL_FillRect(ecran, NULL, SDL_MapRGB(ecran->format, 255, 255, 255));  // Formate l'écran


        // Moteur de recherche, pixel par pixel, de la position des tampons
		i = 0; j = 0;
		do
		{
			j++;
			for(i = 0; i < NMBPIXELW; i++)
		{
			if ((*memPos) [PEN][i][j] == 1)
			{
				pospenTmp.x = i;
				pospenTmp.y = j;
				SDL_BlitSurface(penTmp, NULL, ecran, &pospenTmp);
			}
			
			else if ((*memPos) [TMP][i][j] == 1)
			{
				postmpTmp.x = i;
				postmpTmp.y = j;
				SDL_BlitSurface(tmpTmp, NULL, ecran, &postmpTmp);
			}
		}
		}while (j != NMBPIXELH && i == NMBPIXELW);
		//////////////////////////////////////////////////////////////////


		switch (chxTmp)  // On place le curseur
		{
		case PEN:
			SDL_BlitSurface(pen, NULL, ecran, &pospen);
			break;

		case TMP:
			SDL_BlitSurface(tmp, NULL, ecran, &postmp);
			break;
		}

	    SDL_Flip(ecran);  // Rafraichissement de l'écran

	}
	////////////////////////////////



	// Liberer la memoire
	SDL_FreeSurface(tmp);
	SDL_FreeSurface(tmpTmp);
	SDL_FreeSurface(pen);
	SDL_FreeSurface(penTmp);
    SDL_Quit();
	free(memPos);
	/////////////////////


	// Retourne 1 si réussit
    return EXIT_SUCCESS;
	////////////////////////
}