819 lines
		
	
	
		
			21 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			819 lines
		
	
	
		
			21 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
/*  Grafx2 - The Ultimate 256-color bitmap paint program
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    Copyright 2008 Yves Rizoud
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    Copyright 2008 Franck Charlet
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    Copyright 2007 Adrien Destugues
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    Copyright 1996-2001 Sunset Design (Guillaume Dorme & Karl Maritaud)
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    Grafx2 is free software; you can redistribute it and/or
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    modify it under the terms of the GNU General Public License
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    as published by the Free Software Foundation; version 2
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    of the License.
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    Grafx2 is distributed in the hope that it will be useful,
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    but WITHOUT ANY WARRANTY; without even the implied warranty of
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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    GNU General Public License for more details.
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    You should have received a copy of the GNU General Public License
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    along with Grafx2; if not, see <http://www.gnu.org/licenses/>
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*/
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#include <SDL.h>
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#include <string.h>
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#include <strings.h>
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#include <stdlib.h>
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#include "struct.h"
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#include "sdlscreen.h"
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#include "global.h"
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#include "errors.h"
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#include "buttons.h"
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#include "engine.h"
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#include "misc.h"
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#include "keyboard.h"
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#include "sdlscreen.h"
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#include "windows.h"
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#include "palette.h"
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#include "input.h"
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word Count_used_colors(dword* usage)
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{
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  int nb_pixels=0;
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  Uint8* current_pixel=Main_screen;
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  Uint8 color;
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  word nb_colors=0;
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  int i;
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  for (i=0;i<256;i++) usage[i]=0;
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  //Calcul du nombre de pixels dans l'image
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  nb_pixels=Main_image_height*Main_image_width;
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  // On parcourt l'écran courant pour compter les utilisations des couleurs
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  for(i=0;i<nb_pixels;i++)
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  {
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    color=*current_pixel; //on lit la couleur dans l'écran
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    usage[color]++; //Un point de plus pour cette couleur
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    // On passe au pixel suivant
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    current_pixel++;
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  }
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  //On va maintenant compter dans la table les couleurs utilisées:
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  for(i=0;i<256;i++)
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  {
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    if (usage[i]!=0)
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        nb_colors++;
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  }
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  return nb_colors;
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}
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/// Same as ::Count_used_colors, but for a given rectangle.
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word Count_used_colors_area(dword* usage, word start_x, word start_y, word width, word height)
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{
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  Uint8 color;
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  word x,y;
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  word nb_colors=0;
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  int i;
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  // Init usage table
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  for (i=0;i<256;i++) usage[i]=0;
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  // On parcourt l'écran courant pour compter les utilisations des couleurs
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  for(y=0;y<height;y++)
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  {
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    for(x=0;x<width;x++)
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    {
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      color=*(Screen_pixels+((start_x+x)+(start_y+y)*Screen_width*Pixel_height)*Pixel_width); //on lit la couleur dans l'écran
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      usage[color]++; //Un point de plus pour cette couleur
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    }
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  }
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  //On va maintenant compter dans la table les couleurs utilisées:
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  for(i=0;i<256;i++)
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  {
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    if (usage[i]!=0)
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        nb_colors++;
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  }
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  return nb_colors;
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}
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void Set_palette(T_Palette palette)
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{
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  register int i;
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  SDL_Color PaletteSDL[256];
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  for(i=0;i<256;i++)
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  {
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    PaletteSDL[i].r=(palette[i].R=Round_palette_component(palette[i].R));
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    PaletteSDL[i].g=(palette[i].G=Round_palette_component(palette[i].G));
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    PaletteSDL[i].b=(palette[i].B=Round_palette_component(palette[i].B));
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  }
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  SDL_SetPalette(Screen_SDL, SDL_PHYSPAL | SDL_LOGPAL, PaletteSDL,0,256);
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}
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void Set_color(byte color, byte red, byte green, byte blue)
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{
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  SDL_Color comp;
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  comp.r=red;
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  comp.g=green;
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  comp.b=blue;
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  SDL_SetPalette(Screen_SDL, SDL_LOGPAL, &comp, color, 1);
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}
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void Wait_end_of_click(void)
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{
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    // On désactive tous les raccourcis clavier
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    while(Mouse_K) if(!Get_input()) SDL_Delay(1);
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}
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void Hide_current_image_with_stencil(byte color, byte * stencil)
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//Effacer l'image courante avec une certaine couleur en mode Stencil
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{
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  int nb_pixels=0; //ECX
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  //al=color
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  //edi=Screen_pixels
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  byte* Pixel_Courant=Screen_pixels; //dl
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  int i;
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  nb_pixels=Main_image_height*Main_image_width;
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  for(i=0;i<nb_pixels;i++)
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  {
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    if (stencil[*Pixel_Courant]==0)
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      *Pixel_Courant=color;
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    Pixel_Courant++;
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  }
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}
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void Hide_current_image(byte color)
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// Effacer l'image courante avec une certaine couleur
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{
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  memset(
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    Main_screen ,
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    color ,
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    Main_image_width * Main_image_height
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  );
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}
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void Mouse_sensitivity(__attribute__((unused)) word x,__attribute__((unused)) word y)
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{
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}
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void Init_chrono(dword delay)
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// Démarrer le chrono
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{
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  Timer_delay = delay;
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  Timer_start = SDL_GetTicks()/55;
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  return;
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}
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void Pixel_in_brush             (word x,word y,byte color)
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{
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  *(Brush+y*Brush_width+x)=color;
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}
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byte Read_pixel_from_brush         (word x,word y)
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{
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  return *(Brush + y * Brush_width + x);
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}
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byte Read_pixel_from_current_screen  (word x,word y)
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{
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        return *(Main_screen+y*Main_image_width+x);
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}
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void Pixel_in_current_screen      (word x,word y,byte color)
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{
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    byte* dest=(x+y*Main_image_width+Main_screen);
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    *dest=color;
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}
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void Replace_a_color(byte old_color, byte New_color)
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{
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  byte* edi;
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  // pour chaque pixel :
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  for(edi = Main_screen;edi < Main_screen + Main_image_height * Main_image_width;edi++)
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    if (*edi == old_color)
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      *edi = New_color;
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  Update_rect(0,0,0,0); // On peut TOUT a jour
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  // C'est pas un problème car il n'y a pas de preview
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}
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// FIXME: move to graph.c, it's the only caller
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void Ellipse_compute_limites(short horizontal_radius,short vertical_radius)
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{
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  Ellipse_horizontal_radius_squared =
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    horizontal_radius * horizontal_radius;
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  Ellipse_vertical_radius_squared =
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    vertical_radius * vertical_radius;
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  Ellipse_limit = Ellipse_horizontal_radius_squared * Ellipse_vertical_radius_squared;
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}
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// FIXME: move to graph.c, it's the only caller
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byte Pixel_in_ellipse(void)
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{
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  qword ediesi = Ellipse_cursor_X * Ellipse_cursor_X * Ellipse_vertical_radius_squared +
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        Ellipse_cursor_Y * Ellipse_cursor_Y * Ellipse_horizontal_radius_squared;
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  if((ediesi) <= Ellipse_limit) return 255;
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        return 0;
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}
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// FIXME: move to graph.c, it's the only caller
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byte Pixel_in_circle(void)
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{
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        if(Circle_cursor_X * Circle_cursor_X +
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            Circle_cursor_Y * Circle_cursor_Y <= Circle_limit)
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                return 255;
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        return 0;
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}
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void Copy_part_of_image_to_another(byte * source,word source_x,word source_y,word width,word height,word source_width,byte * dest,word dest_x,word dest_y,word destination_width)
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{
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        // ESI = adresse de la source en (S_Pox_X,source_y)
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        byte* esi = source + source_y * source_width + source_x;
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        // EDI = adresse de la destination (dest_x,dest_y)
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        byte* edi = dest + dest_y * destination_width + dest_x;
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        int line;
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        // Pour chaque ligne
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        for (line=0;line < height; line++)
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        {
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                memcpy(edi,esi,width);
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                // Passe à la ligne suivante
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                esi+=source_width;
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                edi+=destination_width;
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        }
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}
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byte Read_pixel_from_spare_screen(word x,word y)
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{
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  return *(Spare_screen+y*Spare_image_width+x);
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}
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void Rotate_90_deg_lowlevel(byte * source, byte * dest, short width, short height)
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{
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  word x,y;
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  for(y=0;y<height;y++)
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  {
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    for(x=0;x<width;x++)
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    {
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      *(dest+height*(width-1-x)+y)=*source;
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      source++;  
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    }
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  }
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}
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void Rotate_270_deg_lowlevel(byte * source, byte * dest, short width, short height)
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{
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  word x,y;
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  for(y=0;y<height;y++)
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  {
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    for(x=0;x<width;x++)
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    {
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      *(dest+(height-1-y)+x*height)=*source;
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      source++;  
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    }
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  }
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}
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// Replace une couleur par une autre dans un buffer
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void Remap_general_lowlevel(byte * conversion_table,byte * buffer,short width,short height,short buffer_width)
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{
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  int dx,cx;
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  // Pour chaque ligne
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  for(dx=height;dx>0;dx--)
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  {
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    // Pour chaque pixel
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    for(cx=width;cx>0;cx--)
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    {
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    *buffer = conversion_table[*buffer];
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    buffer++;
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    }
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    buffer += buffer_width-width;
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  }
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}
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void Copy_image_to_brush(short start_x,short start_y,short Brush_width,short Brush_height,word image_width)
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{
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    byte* src=start_y*image_width+start_x+Main_screen; //Adr départ image (ESI)
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    byte* dest=Brush; //Adr dest brosse (EDI)
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    int dx;
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  for (dx=Brush_height;dx!=0;dx--)
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  //Pour chaque ligne
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  {
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    // On fait une copie de la ligne
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    memcpy(dest,src,Brush_width);
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    // On passe à la ligne suivante
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    src+=image_width;
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    dest+=Brush_width;
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   }
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}
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byte Read_pixel_from_feedback_screen (word x,word y)
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{
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  return *(FX_feedback_screen+y*Main_image_width+x);
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}
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dword Round_div(dword numerator,dword divisor)
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{
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        return numerator/divisor;
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}
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byte Effect_sieve(word x,word y)
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{
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  return Sieve[x % Sieve_width][y % Sieve_height];
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}
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void Set_mouse_position(void)
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{
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    SDL_WarpMouse(
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        Mouse_X*Pixel_width,
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        Mouse_Y*Pixel_height
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    );
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}
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void Replace_colors_within_limits(byte * replace_table)
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{
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  int line;
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  int counter;
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  byte* Adresse;
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  byte old;
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  // Pour chaque ligne :
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  for(line = Limit_top;line <= Limit_bottom; line++)
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  {
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    // Pour chaque pixel sur la ligne :
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    for (counter = Limit_left;counter <= Limit_right;counter ++)
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    {
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      Adresse = Main_screen+line*Main_image_width+counter;
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      old=*Adresse;
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      *Adresse = replace_table[old];
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    }
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  }
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}
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byte Read_pixel_from_backup_screen (word x,word y)
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{
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  return *(Screen_backup + x + Main_image_width * y);
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}
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void Palette_256_to_64(T_Palette palette)
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{
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  int i;
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  for(i=0;i<256;i++)
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  {
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    palette[i].R = palette[i].R >> 2;
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    palette[i].G = palette[i].G >> 2;
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    palette[i].B = palette[i].B >> 2;
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  }
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}
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void Palette_64_to_256(T_Palette palette)
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{
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  int i;
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  for(i=0;i<256;i++)
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  {
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    palette[i].R = (palette[i].R << 2)|(palette[i].R >> 4);
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    palette[i].G = (palette[i].G << 2)|(palette[i].G >> 4);
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    palette[i].B = (palette[i].B << 2)|(palette[i].B >> 4);
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  }
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}
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 | 
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byte Effect_interpolated_colorize  (word x,word y,byte color)
 | 
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{
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  // factor_a = 256*(100-Colorize_opacity)/100
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  // factor_b = 256*(    Colorize_opacity)/100
 | 
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  //
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  // (Couleur_dessous*factor_a+color*facteur_B)/256
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  //
 | 
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 | 
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  // On place dans ESI 3*Couleur_dessous ( = position de cette couleur dans la
 | 
						|
  // palette des teintes) et dans EDI, 3*color.
 | 
						|
  byte blue_under=Main_palette[*(FX_feedback_screen + y * Main_image_width + x)].B;
 | 
						|
  byte blue=Main_palette[color].B;
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  byte green_under=Main_palette[*(FX_feedback_screen + y * Main_image_width + x)].G;
 | 
						|
  byte green=Main_palette[color].G;
 | 
						|
  byte red_under=Main_palette[*(FX_feedback_screen + y * Main_image_width + x)].R;
 | 
						|
  byte red=Main_palette[color].R;
 | 
						|
 | 
						|
  // On récupère les 3 composantes RVB
 | 
						|
 | 
						|
  // blue
 | 
						|
  blue = (Factors_inv_table[blue]
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    + Factors_table[blue_under]) / 256;
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						|
  green = (Factors_inv_table[green]
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    + Factors_table[green_under]) / 256;
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						|
  red = (Factors_inv_table[red]
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    + Factors_table[red_under]) / 256;
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  return Best_color(red,green,blue);
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 | 
						|
}
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byte Effect_additive_colorize    (word x,word y,byte color)
 | 
						|
{
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						|
  byte blue_under=Main_palette[*(FX_feedback_screen + y * Main_image_width + x)].B;
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						|
  byte green_under=Main_palette[*(FX_feedback_screen + y * Main_image_width + x)].G;
 | 
						|
  byte red_under=Main_palette[*(FX_feedback_screen + y * Main_image_width + x)].R;
 | 
						|
  byte blue=Main_palette[color].B;
 | 
						|
  byte green=Main_palette[color].G;
 | 
						|
  byte red=Main_palette[color].R;
 | 
						|
 | 
						|
  return Best_color(
 | 
						|
    red>red_under?red:red_under,
 | 
						|
    green>green_under?green:green_under,
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						|
    blue>blue_under?blue:blue_under);
 | 
						|
}
 | 
						|
 | 
						|
byte Effect_substractive_colorize(word x,word y,byte color)
 | 
						|
{
 | 
						|
  byte blue_under=Main_palette[*(FX_feedback_screen + y * Main_image_width + x)].B;
 | 
						|
  byte green_under=Main_palette[*(FX_feedback_screen + y * Main_image_width + x)].G;
 | 
						|
  byte red_under=Main_palette[*(FX_feedback_screen + y * Main_image_width + x)].R;
 | 
						|
  byte blue=Main_palette[color].B;
 | 
						|
  byte green=Main_palette[color].G;
 | 
						|
  byte red=Main_palette[color].R;
 | 
						|
 | 
						|
  return Best_color(
 | 
						|
    red<red_under?red:red_under,
 | 
						|
    green<green_under?green:green_under,
 | 
						|
    blue<blue_under?blue:blue_under);
 | 
						|
}
 | 
						|
 | 
						|
void Check_timer(void)
 | 
						|
{
 | 
						|
  if((SDL_GetTicks()/55)-Timer_delay>Timer_start) Timer_state=1;
 | 
						|
}
 | 
						|
 | 
						|
void Flip_Y_lowlevel(byte *src, short width, short height)
 | 
						|
{
 | 
						|
  // ESI pointe sur la partie haute de la brosse
 | 
						|
  // EDI sur la partie basse
 | 
						|
  byte* ESI = src ;
 | 
						|
  byte* EDI = src + (height - 1) *width;
 | 
						|
  byte tmp;
 | 
						|
  word cx;
 | 
						|
 | 
						|
  while(ESI < EDI)
 | 
						|
  {
 | 
						|
    // Il faut inverser les lignes pointées par ESI et
 | 
						|
    // EDI ("Brush_width" octets en tout)
 | 
						|
 | 
						|
    for(cx = width;cx>0;cx--)
 | 
						|
    {
 | 
						|
      tmp = *ESI;
 | 
						|
      *ESI = *EDI;
 | 
						|
      *EDI = tmp;
 | 
						|
      ESI++;
 | 
						|
      EDI++;
 | 
						|
    }
 | 
						|
 | 
						|
    // On change de ligne :
 | 
						|
    // ESI pointe déjà sur le début de la ligne suivante
 | 
						|
    // EDI pointe sur la fin de la ligne en cours, il
 | 
						|
    // doit pointer sur le début de la précédente...
 | 
						|
    EDI -= 2 * width; // On recule de 2 lignes
 | 
						|
  }
 | 
						|
}
 | 
						|
 | 
						|
void Flip_X_lowlevel(byte *src, short width, short height)
 | 
						|
{
 | 
						|
  // ESI pointe sur la partie gauche et EDI sur la partie
 | 
						|
  // droite
 | 
						|
  byte* ESI = src;
 | 
						|
  byte* EDI = src + width - 1;
 | 
						|
 | 
						|
  byte* line_start;
 | 
						|
  byte* line_end;
 | 
						|
  byte tmp;
 | 
						|
  word cx;
 | 
						|
 | 
						|
  while(ESI<EDI)
 | 
						|
  {
 | 
						|
    line_start = ESI;
 | 
						|
    line_end = EDI;
 | 
						|
 | 
						|
    // On échange par colonnes
 | 
						|
    for(cx=height;cx>0;cx--)
 | 
						|
    {
 | 
						|
      tmp=*ESI;
 | 
						|
      *ESI=*EDI;
 | 
						|
      *EDI=tmp;
 | 
						|
      EDI+=width;
 | 
						|
      ESI+=width;
 | 
						|
    }
 | 
						|
 | 
						|
    // On change de colonne
 | 
						|
    // ESI > colonne suivante
 | 
						|
    // EDI > colonne précédente
 | 
						|
    ESI = line_start + 1;
 | 
						|
    EDI = line_end - 1;
 | 
						|
  }
 | 
						|
}
 | 
						|
 | 
						|
// Rotate a pixel buffer 180º on itself.
 | 
						|
void Rotate_180_deg_lowlevel(byte *src, short width, short height)
 | 
						|
{
 | 
						|
  // ESI pointe sur la partie supérieure de la brosse
 | 
						|
  // EDI pointe sur la partie basse
 | 
						|
  byte* ESI = src;
 | 
						|
  byte* EDI = src + height*width - 1;
 | 
						|
  // EDI pointe sur le dernier pixel de la derniere ligne
 | 
						|
  byte tmp;
 | 
						|
  word cx;
 | 
						|
 | 
						|
  // In case of odd height, the algorithm in this function would
 | 
						|
  // miss the middle line, so we do it this way:
 | 
						|
  if (height & 1)
 | 
						|
  {
 | 
						|
    Flip_X_lowlevel(src, width, height);
 | 
						|
    Flip_Y_lowlevel(src, width, height);
 | 
						|
    return;
 | 
						|
  }
 | 
						|
 | 
						|
  while(ESI < EDI)
 | 
						|
  {
 | 
						|
    // On échange les deux lignes pointées par EDI et
 | 
						|
    // ESI (Brush_width octets)
 | 
						|
    // En même temps, on échange les pixels, donc EDI
 | 
						|
    // pointe sur la FIN de sa ligne
 | 
						|
 | 
						|
    for(cx=width;cx>0;cx--)
 | 
						|
    {
 | 
						|
      tmp = *ESI;
 | 
						|
      *ESI = *EDI;
 | 
						|
      *EDI = tmp;
 | 
						|
 | 
						|
      EDI--; // Attention ici on recule !
 | 
						|
      ESI++;
 | 
						|
    }
 | 
						|
  }
 | 
						|
}
 | 
						|
 | 
						|
void Rescale(byte *src_buffer, short src_width, short src_height, byte *dst_buffer, short dst_width, short dst_height, short x_flipped, short y_flipped)
 | 
						|
{
 | 
						|
  int    offset,line,column;
 | 
						|
 | 
						|
  int    x_pos_in_brush;   // Position courante dans l'ancienne brosse
 | 
						|
  int    y_pos_in_brush;
 | 
						|
  int    delta_x_in_brush; // "Vecteur incrémental" du point précédent
 | 
						|
  int    delta_y_in_brush;
 | 
						|
  int    initial_x_pos;       // Position X de début de parcours de ligne
 | 
						|
  
 | 
						|
  // Calcul du "vecteur incrémental":
 | 
						|
  delta_x_in_brush=(src_width<<16) * (x_flipped?-1:1) / (dst_width);
 | 
						|
  delta_y_in_brush=(src_height<<16) * (y_flipped?-1:1) / (dst_height);
 | 
						|
 | 
						|
  offset=0;
 | 
						|
 | 
						|
  // Calcul de la valeur initiale de y_pos:
 | 
						|
  if (y_flipped)
 | 
						|
    y_pos_in_brush=(src_height<<16)-1; // Inversion en Y de la brosse
 | 
						|
  else
 | 
						|
    y_pos_in_brush=0;                // Pas d'inversion en Y de la brosse
 | 
						|
 | 
						|
  // Calcul de la valeur initiale de x_pos pour chaque ligne:
 | 
						|
  if (x_flipped)
 | 
						|
    initial_x_pos = (src_width<<16)-1; // Inversion en X de la brosse
 | 
						|
  else
 | 
						|
    initial_x_pos = 0;                // Pas d'inversion en X de la brosse
 | 
						|
  
 | 
						|
  // Pour chaque ligne
 | 
						|
  for (line=0;line<dst_height;line++)
 | 
						|
  {
 | 
						|
    // On repart du début de la ligne:
 | 
						|
    x_pos_in_brush=initial_x_pos;
 | 
						|
 | 
						|
    // Pour chaque colonne:
 | 
						|
    for (column=0;column<dst_width;column++)
 | 
						|
    {
 | 
						|
      // On copie le pixel:
 | 
						|
      dst_buffer[offset]=*(src_buffer + (x_pos_in_brush>>16) + (y_pos_in_brush>>16)*src_width);
 | 
						|
      // On passe à la colonne de brosse suivante:
 | 
						|
      x_pos_in_brush+=delta_x_in_brush;
 | 
						|
      // On passe au pixel suivant de la nouvelle brosse:
 | 
						|
      offset++;
 | 
						|
    }
 | 
						|
    // On passe à la ligne de brosse suivante:
 | 
						|
    y_pos_in_brush+=delta_y_in_brush;
 | 
						|
  }
 | 
						|
}
 | 
						|
 | 
						|
void Slider_timer(byte speed)
 | 
						|
//Boucle d'attente pour faire bouger les scrollbars à une vitesse correcte
 | 
						|
{
 | 
						|
  Uint32 end;
 | 
						|
  byte original_mouse_k = Mouse_K;
 | 
						|
  end = SDL_GetTicks() + speed*10;
 | 
						|
  do
 | 
						|
  {
 | 
						|
    if (!Get_input()) SDL_Delay(1);
 | 
						|
  } while (Mouse_K == original_mouse_k && SDL_GetTicks()<end);
 | 
						|
}
 | 
						|
 | 
						|
void Scroll_picture(short x_offset,short y_offset)
 | 
						|
{
 | 
						|
  byte* esi = Screen_backup; //source de la copie
 | 
						|
  byte* edi = Main_screen + y_offset * Main_image_width + x_offset;
 | 
						|
  const word ax = Main_image_width - x_offset; // Nombre de pixels à copier à droite
 | 
						|
  word dx;
 | 
						|
  for(dx = Main_image_height - y_offset;dx>0;dx--)
 | 
						|
  {
 | 
						|
  // Pour chaque ligne
 | 
						|
    memcpy(edi,esi,ax);
 | 
						|
    memcpy(edi - x_offset,esi+ax,x_offset);
 | 
						|
 | 
						|
    // On passe à la ligne suivante
 | 
						|
    edi += Main_image_width;
 | 
						|
    esi += Main_image_width;
 | 
						|
  }
 | 
						|
 | 
						|
  // On vient de faire le traitement pour otutes les lignes au-dessous de y_offset
 | 
						|
  // Maintenant on traite celles au dessus
 | 
						|
  edi = x_offset + Main_screen;
 | 
						|
  for(dx = y_offset;dx>0;dx--)
 | 
						|
  {
 | 
						|
    memcpy(edi,esi,ax);
 | 
						|
    memcpy(edi - x_offset,esi+ax,x_offset);
 | 
						|
 | 
						|
    edi += Main_image_width;
 | 
						|
    esi += Main_image_width;
 | 
						|
  }
 | 
						|
 | 
						|
  Update_rect(0,0,0,0);
 | 
						|
}
 | 
						|
 | 
						|
void Zoom_a_line(byte* original_line, byte* zoomed_line,
 | 
						|
        word factor, word width
 | 
						|
)
 | 
						|
{
 | 
						|
        byte color;
 | 
						|
        word x;
 | 
						|
 | 
						|
        // Pour chaque pixel
 | 
						|
        for(x=0;x<width;x++){
 | 
						|
                color = *original_line;
 | 
						|
 | 
						|
                memset(zoomed_line,color,factor);
 | 
						|
                zoomed_line+=factor;
 | 
						|
 | 
						|
                original_line++;
 | 
						|
        }
 | 
						|
}
 | 
						|
 | 
						|
/*############################################################################*/
 | 
						|
 | 
						|
#if defined(__WIN32__)
 | 
						|
    #define _WIN32_WINNT 0x0500
 | 
						|
    #include <windows.h>
 | 
						|
#elif defined(__macosx__) || defined(__FreeBSD__)
 | 
						|
    #include <sys/sysctl.h>
 | 
						|
#elif defined(__BEOS__) || defined(__HAIKU__)
 | 
						|
    // sysinfo not implemented
 | 
						|
#elif defined(__AROS__) || defined(__amigaos4__) || defined(__MORPHOS__) || defined(__amigaos__)
 | 
						|
    #include <proto/exec.h>
 | 
						|
#elif defined(__SKYOS__)
 | 
						|
    #include <skyos/sysinfo.h>
 | 
						|
#else
 | 
						|
    #include <sys/sysinfo.h> // sysinfo() for free RAM
 | 
						|
#endif
 | 
						|
 | 
						|
// Indique quelle est la mémoire disponible
 | 
						|
unsigned long Memory_free(void)
 | 
						|
{
 | 
						|
    // Memory is no longer relevant. If there is ANY problem or doubt here,
 | 
						|
    // you can simply return 10*1024*1024 (10Mb), to make the "Pages"something
 | 
						|
    // memory allocation functions happy.
 | 
						|
 | 
						|
    // However, it is still a good idea to make a proper function if you can...
 | 
						|
    // If Grafx2 thinks the memory is full, weird things may happen. And if memory
 | 
						|
    // ever becomes full and you're still saying there are 10MB free here, the
 | 
						|
    // program will crash without saving any picture backup ! You've been warned...
 | 
						|
    #if defined(__WIN32__)
 | 
						|
        MEMORYSTATUS mstt;
 | 
						|
        mstt.dwLength = sizeof(MEMORYSTATUS);
 | 
						|
        GlobalMemoryStatus(&mstt);
 | 
						|
        return mstt.dwAvailPhys;
 | 
						|
    #elif defined(__macosx__) || defined(__FreeBSD__)
 | 
						|
        int mib[2];
 | 
						|
        int maxmem;
 | 
						|
        size_t len;
 | 
						|
 | 
						|
        mib[0] = CTL_HW;
 | 
						|
        mib[1] = HW_USERMEM;
 | 
						|
        len = sizeof(maxmem);
 | 
						|
        sysctl(mib,2,&maxmem,&len,NULL,0);
 | 
						|
        return maxmem;
 | 
						|
    #elif defined(__BEOS__) || defined(__HAIKU__) || defined(__SKYOS__) || defined(__amigaos4__) || defined(__amigaos__)
 | 
						|
        // No <sys/sysctl.h> on BeOS or Haiku
 | 
						|
        // AvailMem is misleading on os4 (os4 caches stuff in memory that you can still allocate)
 | 
						|
        #warning "There is missing code there for your platform ! please check and correct :)"
 | 
						|
        return 10*1024*1024;
 | 
						|
    #elif defined(__AROS__) || defined(__MORPHOS__)
 | 
						|
        return AvailMem(MEMF_ANY);
 | 
						|
    #else
 | 
						|
        struct sysinfo info;
 | 
						|
        sysinfo(&info);
 | 
						|
        return info.freeram*info.mem_unit;
 | 
						|
    #endif
 | 
						|
}
 | 
						|
 | 
						|
 | 
						|
 | 
						|
// Transformer un nombre (entier naturel) en chaîne
 | 
						|
void Num2str(dword number,char * str,byte nb_char)
 | 
						|
{
 | 
						|
  int index;
 | 
						|
 | 
						|
  for (index=nb_char-1;index>=0;index--)
 | 
						|
  {
 | 
						|
    str[index]=(number%10)+'0';
 | 
						|
    number/=10;
 | 
						|
    if (number==0)
 | 
						|
      for (index--;index>=0;index--)
 | 
						|
        str[index]=' ';
 | 
						|
  }
 | 
						|
  str[nb_char]='\0';
 | 
						|
}
 | 
						|
 | 
						|
// Arrondir un nombre réel à la valeur entière la plus proche
 | 
						|
short Round(float value)
 | 
						|
{
 | 
						|
  short temp=value;
 | 
						|
 | 
						|
  if (value>=0)
 | 
						|
    { if ((value-temp)>= 0.5) temp++; }
 | 
						|
  else
 | 
						|
    { if ((value-temp)<=-0.5) temp--; }
 | 
						|
 | 
						|
  return temp;
 | 
						|
}
 | 
						|
 | 
						|
// Arrondir le résultat d'une division à la valeur entière supérieure
 | 
						|
short Round_div_max(short numerator,short divisor)
 | 
						|
{
 | 
						|
  if (!(numerator % divisor))
 | 
						|
    return (numerator/divisor);
 | 
						|
  else
 | 
						|
    return (numerator/divisor)+1;
 | 
						|
}
 | 
						|
 | 
						|
// Retourne le minimum entre deux nombres
 | 
						|
int Min(int a,int b)
 | 
						|
{
 | 
						|
  return (a<b)?a:b;
 | 
						|
}
 | 
						|
 | 
						|
// Retourne le maximum entre deux nombres
 | 
						|
int Max(int a,int b)
 | 
						|
{
 | 
						|
  return (a>b)?a:b;
 | 
						|
}
 | 
						|
 | 
						|
 | 
						|
 | 
						|
// Fonction retournant le libellé d'une mode (ex: " 320x200")
 | 
						|
char * Mode_label(int mode)
 | 
						|
{
 | 
						|
  static char str[24];
 | 
						|
  if (! Video_mode[mode].Fullscreen)
 | 
						|
    return "window";
 | 
						|
  sprintf(str, "%dx%d", Video_mode[mode].Width, Video_mode[mode].Height);
 | 
						|
 | 
						|
  return str;
 | 
						|
}
 | 
						|
 | 
						|
// Trouve un mode video à partir d'une chaine: soit "window",
 | 
						|
// soit de la forme "320x200"
 | 
						|
// Renvoie -1 si la chaine n'est pas convertible
 | 
						|
int Convert_videomode_arg(const char *argument)
 | 
						|
{
 | 
						|
  // Je suis paresseux alors je vais juste tester les libellés
 | 
						|
  int mode_index;
 | 
						|
  for (mode_index=0; mode_index<Nb_video_modes; mode_index++)
 | 
						|
    // Attention les vieilles fonctions de lecture .ini mettent tout en MAJUSCULE.
 | 
						|
    if (!strcasecmp(Mode_label(mode_index), argument))
 | 
						|
      return mode_index;
 | 
						|
 | 
						|
  return -1;
 | 
						|
}
 |