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grafX2/loadsave.c
Yves Rizoud f38fd068a2 [layers] Merged changes from trunk 
git-svn-id: svn://pulkomandy.tk/GrafX2/branches/layers@1131 416bcca6-2ee7-4201-b75f-2eb2f807beb1
2009-11-01 01:05:21 +00:00

947 lines
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C
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/* Grafx2 - The Ultimate 256-color bitmap paint program
Copyright 2009 Petter Lindquist
Copyright 2008 Yves Rizoud
Copyright 2008 Franck Charlet
Copyright 2007 Adrien Destugues
Copyright 1996-2001 Sunset Design (Guillaume Dorme & Karl Maritaud)
Grafx2 is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; version 2
of the License.
Grafx2 is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Grafx2; if not, see <http://www.gnu.org/licenses/>
*/
#define _XOPEN_SOURCE
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <limits.h>
#include <SDL_image.h>
#include <SDL_endian.h>
#include "buttons.h"
#include "const.h"
#include "errors.h"
#include "global.h"
#include "io.h"
#include "loadsave.h"
#include "misc.h"
#include "op_c.h"
#include "pages.h"
#include "palette.h"
#include "sdlscreen.h"
#include "struct.h"
#include "windows.h"
#include "engine.h"
// -- PKM -------------------------------------------------------------------
void Test_PKM(void);
void Load_PKM(void);
void Save_PKM(void);
// -- LBM -------------------------------------------------------------------
void Test_LBM(void);
void Load_LBM(void);
void Save_LBM(void);
// -- GIF -------------------------------------------------------------------
void Test_GIF(void);
void Load_GIF(void);
void Save_GIF(void);
// -- PCX -------------------------------------------------------------------
void Test_PCX(void);
void Load_PCX(void);
void Save_PCX(void);
// -- BMP -------------------------------------------------------------------
void Test_BMP(void);
void Load_BMP(void);
void Save_BMP(void);
// -- IMG -------------------------------------------------------------------
void Test_IMG(void);
void Load_IMG(void);
void Save_IMG(void);
// -- SCx -------------------------------------------------------------------
void Test_SCx(void);
void Load_SCx(void);
void Save_SCx(void);
// -- CEL -------------------------------------------------------------------
void Test_CEL(void);
void Load_CEL(void);
void Save_CEL(void);
// -- KCF -------------------------------------------------------------------
void Test_KCF(void);
void Load_KCF(void);
void Save_KCF(void);
// -- PAL -------------------------------------------------------------------
void Test_PAL(void);
void Load_PAL(void);
void Save_PAL(void);
// -- PI1 -------------------------------------------------------------------
void Test_PI1(void);
void Load_PI1(void);
void Save_PI1(void);
// -- PC1 -------------------------------------------------------------------
void Test_PC1(void);
void Load_PC1(void);
void Save_PC1(void);
// -- NEO -------------------------------------------------------------------
void Test_NEO(void);
void Load_NEO(void);
void Save_NEO(void);
// -- C64 -------------------------------------------------------------------
void Test_C64(void);
void Load_C64(void);
void Save_C64(void);
// -- PNG -------------------------------------------------------------------
#ifndef __no_pnglib__
void Test_PNG(void);
void Load_PNG(void);
void Save_PNG(void);
#endif
// -- SDL_Image -------------------------------------------------------------
// (TGA, BMP, PNM, XPM, XCF, PCX, GIF, JPG, TIF, LBM, PNG, ICO)
void Load_SDL_Image(void);
void Init_preview(short width,short height,long size,int format,enum PIXEL_RATIO ratio);
// ENUM Name TestFunc LoadFunc SaveFunc Backup Comment Ext Exts
T_Format File_formats[NB_KNOWN_FORMATS] = {
{FORMAT_ALL_IMAGES, "(all)", NULL, NULL, NULL, 0, 0, 0, "", "gif;png;bmp;pcx;pkm;lbm;iff;img;sci;scq;scf;scn;sco;pi1;pc1;cel;neo;kcf;pal;c64;koa;tga;pnm;xpm;xcf;jpg;jpeg;tif;tiff;ico"},
{FORMAT_ALL_FILES, "(*.*)", NULL, NULL, NULL, 0, 0, 0, "", "*"},
{FORMAT_GIF, " gif", Test_GIF, Load_GIF, Save_GIF, 1, 1, 1, "gif", "gif"},
#ifndef __no_pnglib__
{FORMAT_PNG, " png", Test_PNG, Load_PNG, Save_PNG, 1, 1, 0, "png", "png"},
#endif
{FORMAT_BMP, " bmp", Test_BMP, Load_BMP, Save_BMP, 1, 0, 0, "bmp", "bmp"},
{FORMAT_PCX, " pcx", Test_PCX, Load_PCX, Save_PCX, 1, 0, 0, "pcx", "pcx"},
{FORMAT_PKM, " pkm", Test_PKM, Load_PKM, Save_PKM, 1, 1, 0, "pkm", "pkm"},
{FORMAT_LBM, " lbm", Test_LBM, Load_LBM, Save_LBM, 1, 0, 0, "lbm", "lbm;iff"},
{FORMAT_IMG, " img", Test_IMG, Load_IMG, Save_IMG, 1, 0, 0, "img", "img"},
{FORMAT_SCx, " sc?", Test_SCx, Load_SCx, Save_SCx, 1, 0, 0, "sc?", "sci;scq;scf;scn;sco"},
{FORMAT_PI1, " pi1", Test_PI1, Load_PI1, Save_PI1, 1, 0, 0, "pi1", "pi1"},
{FORMAT_PC1, " pc1", Test_PC1, Load_PC1, Save_PC1, 1, 0, 0, "pc1", "pc1"},
{FORMAT_CEL, " cel", Test_CEL, Load_CEL, Save_CEL, 1, 0, 0, "cel", "cel"},
{FORMAT_NEO, " neo", Test_NEO, Load_NEO, Save_NEO, 1, 0, 0, "neo", "neo"},
{FORMAT_KCF, " kcf", Test_KCF, Load_KCF, Save_KCF, 0, 0, 0, "kcf", "kcf"},
{FORMAT_PAL, " pal", Test_PAL, Load_PAL, Save_PAL, 0, 0, 0, "pal", "pal"},
{FORMAT_C64, " c64", Test_C64, Load_C64, Save_C64, 1, 1, 0, "c64", "c64;koa"},
{FORMAT_MISC,"misc.", NULL, NULL, NULL, 1, 0, 0, "", "tga;pnm;xpm;xcf;jpg;jpeg;tif;tiff;ico"},
};
// Cette variable est aliment<6E>e apr<70>s chargement r<>ussi d'une image.
// Actuellement seul le format PNG peut donner autre chose que PIXEL_SIMPLE.
enum PIXEL_RATIO Ratio_of_loaded_image=PIXEL_SIMPLE;
// Chargement des pixels dans l'<27>cran principal
void Pixel_load_in_current_screen(word x_pos,word y_pos,byte color)
{
//if ((x_pos>=0) && (y_pos>=0)) //Toujours vrai ?
if ((x_pos<Main_image_width) && (y_pos<Main_image_height))
Pixel_in_current_screen(x_pos,y_pos,color,0);
}
// Chargement des pixels dans la brosse
void Pixel_load_in_brush(word x_pos,word y_pos,byte color)
{
//if ((x_pos>=0) && (y_pos>=0))
if ((x_pos<Brush_width) && (y_pos<Brush_height))
Pixel_in_brush(x_pos,y_pos,color);
}
short Preview_factor_X;
short Preview_factor_Y;
short Preview_pos_X;
short Preview_pos_Y;
// Chargement des pixels dans la preview
void Pixel_load_in_preview(word x_pos,word y_pos,byte color)
{
if (((x_pos % Preview_factor_X)==0) && ((y_pos % Preview_factor_Y)==0))
if ((x_pos<Main_image_width) && (y_pos<Main_image_height))
{
if (Ratio_of_loaded_image == PIXEL_WIDE &&
Pixel_ratio != PIXEL_WIDE &&
Pixel_ratio != PIXEL_WIDE2)
{
Pixel(Preview_pos_X+(x_pos/Preview_factor_X*2),
Preview_pos_Y+(y_pos/Preview_factor_Y),
color);
Pixel(Preview_pos_X+(x_pos/Preview_factor_X*2)+1,
Preview_pos_Y+(y_pos/Preview_factor_Y),
color);
}
else if (Ratio_of_loaded_image == PIXEL_TALL &&
Pixel_ratio != PIXEL_TALL &&
Pixel_ratio != PIXEL_TALL2)
{
Pixel(Preview_pos_X+(x_pos/Preview_factor_X),
Preview_pos_Y+(y_pos/Preview_factor_Y*2),
color);
Pixel(Preview_pos_X+(x_pos/Preview_factor_X),
Preview_pos_Y+(y_pos/Preview_factor_Y*2)+1,
color);
}
else
Pixel(Preview_pos_X+(x_pos/Preview_factor_X),
Preview_pos_Y+(y_pos/Preview_factor_Y),
color);
}
}
void Remap_fileselector(void)
{
if (Pixel_load_function==Pixel_load_in_preview)
{
Compute_optimal_menu_colors(Main_palette);
if(
(
Main_palette[MC_Black].R==Main_palette[MC_Dark].R &&
Main_palette[MC_Black].G==Main_palette[MC_Dark].G &&
Main_palette[MC_Black].B==Main_palette[MC_Dark].B
) ||
(
Main_palette[MC_Light].R==Main_palette[MC_Dark].R &&
Main_palette[MC_Light].G==Main_palette[MC_Dark].G &&
Main_palette[MC_Light].B==Main_palette[MC_Dark].B
) ||
(
Main_palette[MC_White].R==Main_palette[MC_Light].R &&
Main_palette[MC_White].G==Main_palette[MC_Light].G &&
Main_palette[MC_White].B==Main_palette[MC_Light].B
)
)
{
// Si on charge une image monochrome, le fileselect ne sera plus visible. Dans ce cas on force quelques couleurs <20> des valeurs sures
int black =
Main_palette[MC_Black].R +
Main_palette[MC_Black].G +
Main_palette[MC_Black].B;
int white =
Main_palette[MC_White].R +
Main_palette[MC_White].G +
Main_palette[MC_White].B;
//Set_color(MC_Light,(2*white+black)/9,(2*white+black)/9,(2*white+black)/9);
//Set_color(MC_Dark,(2*black+white)/9,(2*black+white)/9,(2*black+white)/9);
Main_palette[MC_Dark].R=(2*black+white)/9;
Main_palette[MC_Dark].G=(2*black+white)/9;
Main_palette[MC_Dark].B=(2*black+white)/9;
Main_palette[MC_Light].R=(2*white+black)/9;
Main_palette[MC_Light].G=(2*white+black)/9;
Main_palette[MC_Light].B=(2*white+black)/9;
Set_palette(Main_palette);
}
Remap_screen_after_menu_colors_change();
}
}
int Image_24b;
T_Components * Buffer_image_24b;
Func_24b_display Pixel_load_24b;
// Chargement des pixels dans le buffer 24b
void Pixel_load_in_24b_buffer(short x_pos,short y_pos,byte r,byte g,byte b)
{
int index;
if ((x_pos>=0) && (y_pos>=0))
if ((x_pos<Main_image_width) && (y_pos<Main_image_height))
{
index=(y_pos*Main_image_width)+x_pos;
Buffer_image_24b[index].R=r;
Buffer_image_24b[index].G=g;
Buffer_image_24b[index].B=b;
}
}
// Chargement des pixels dans la preview en 24b
void Pixel_load_in_24b_preview(short x_pos,short y_pos,byte r,byte g,byte b)
{
byte color;
if (((x_pos % Preview_factor_X)==0) && ((y_pos % Preview_factor_Y)==0))
if ((x_pos<Main_image_width) && (y_pos<Main_image_height))
{
color=((r >> 5) << 5) |
((g >> 5) << 2) |
((b >> 6));
Pixel(Preview_pos_X+(x_pos/Preview_factor_X),
Preview_pos_Y+(y_pos/Preview_factor_Y),
color);
}
}
// Cr<43>ation d'une palette fake
void Set_palette_fake_24b(T_Palette palette)
{
int color;
// G<>n<EFBFBD>ration de la palette
for (color=0;color<256;color++)
{
palette[color].R=((color & 0xE0)>>5)<<5;
palette[color].G=((color & 0x1C)>>2)<<5;
palette[color].B=((color & 0x03)>>0)<<6;
}
}
// Initialization for a 24bit image
void Init_preview_24b(short width,short height,long size,int format)
{
// Call common processing
Init_preview(width,height,size,format, PIXEL_SIMPLE);
if (File_error)
return;
if (Pixel_load_function==Pixel_load_in_preview)
{
// Choose 24bit pixel "writer"
Pixel_load_24b=Pixel_load_in_24b_preview;
// Load palette
Set_palette_fake_24b(Main_palette);
Set_palette(Main_palette);
Remap_fileselector();
}
else
{
// Choose 24bit pixel "writer"
Pixel_load_24b=Pixel_load_in_24b_buffer;
// Allocate 24bit buffer
Buffer_image_24b=
(T_Components *)malloc(width*height*sizeof(T_Components));
if (!Buffer_image_24b)
{
// Print an error message
// The following is to be sure the messagfe is readable
Compute_optimal_menu_colors(Main_palette);
Message_out_of_memory();
if (Pixel_load_function==Pixel_load_in_current_screen)
File_error=1; // 1 => On n'a pas perdu l'image courante
else
File_error=3; // 3 => Chargement de brosse <20>chou<6F>
}
else
Image_24b=1; // On a un buffer <20> traiter en fin de chargement
}
}
void Init_preview(short width,short height,long size,int format, enum PIXEL_RATIO ratio)
//
// Cette proc<6F>dure doit <20>tre appel<65>e par les routines de chargement
// d'images.
// Elle doit <20>tre appel<65>e entre le moment o<> l'on connait la dimension de
// l'image (dimension r<>elle, pas dimension tronqu<71>e) et l'affichage du
// premier point.
//
{
char str[10];
if (Pixel_load_function==Pixel_load_in_preview)
{
// Pr<50>paration du chargement d'une preview:
// Affichage des donn<6E>es "Image size:"
if ((width<10000) && (height<10000))
{
Num2str(width,str,4);
Num2str(height,str+5,4);
str[4]='x';
Print_in_window(143,59,str,MC_Black,MC_Light);
}
else
{
Print_in_window(143,59,"VERY BIG!",MC_Black,MC_Light);
}
// Affichage de la taille du fichier
if (size<1048576)
{
// Le fichier fait moins d'un Mega, on affiche sa taille direct
Num2str(size,str,7);
Print_in_window(236,59,str,MC_Black,MC_Light);
}
else if ((size/1024)<100000)
{
// Le fichier fait plus d'un Mega, on peut afficher sa taille en Ko
Num2str(size/1024,str,5);
strcpy(str+5,"Kb");
Print_in_window(236,59,str,MC_Black,MC_Light);
}
else
{
// Le fichier fait plus de 100 Mega octets (cas tr<74>s rare :))
Print_in_window(236,59,"LARGE!!",MC_Black,MC_Light);
}
// Affichage du vrai format
if (format!=Main_format)
{
Print_in_window( 59,59,Get_fileformat(format)->Label,MC_Black,MC_Light);
}
// On efface le commentaire pr<70>c<EFBFBD>dent
Window_rectangle(45,70,32*8,8,MC_Light);
// Affichage du commentaire
if (Get_fileformat(format)->Comment)
Print_in_window(45,70,Main_comment,MC_Black,MC_Light);
// Calculs des donn<6E>es n<>cessaires <20> l'affichage de la preview:
if (ratio == PIXEL_WIDE &&
Pixel_ratio != PIXEL_WIDE &&
Pixel_ratio != PIXEL_WIDE2)
width*=2;
else if (ratio == PIXEL_TALL &&
Pixel_ratio != PIXEL_TALL &&
Pixel_ratio != PIXEL_TALL2)
height*=2;
Preview_factor_X=Round_div_max(width,122*Menu_factor_X);
Preview_factor_Y=Round_div_max(height, 82*Menu_factor_Y);
if ( (!Config.Maximize_preview) && (Preview_factor_X!=Preview_factor_Y) )
{
if (Preview_factor_X>Preview_factor_Y)
Preview_factor_Y=Preview_factor_X;
else
Preview_factor_X=Preview_factor_Y;
}
Preview_pos_X=Window_pos_X+183*Menu_factor_X;
Preview_pos_Y=Window_pos_Y+ 95*Menu_factor_Y;
// On nettoie la zone o<> va s'afficher la preview:
Window_rectangle(183,95,120,80,MC_Light);
// Un update pour couvrir les 4 zones: 3 libell<6C>s plus le commentaire
Update_window_area(45,48,256,30);
// Zone de preview
Update_window_area(183,95,120,80);
}
else
{
if (Pixel_load_function==Pixel_load_in_current_screen)
{
if (Backup_with_new_dimensions(0,1,width,height))
{
// La nouvelle page a pu <20>tre allou<6F>e, elle est pour l'instant pleine
// de 0s. Elle fait Main_image_width de large.
// Normalement tout va bien, tout est sous contr<74>le...
// Load into layer 0, by default.
Main_current_layer=0;
}
else
{
// Afficher un message d'erreur
// Pour <20>tre s<>r que ce soit lisible.
Compute_optimal_menu_colors(Main_palette);
Message_out_of_memory();
File_error=1; // 1 => On n'a pas perdu l'image courante
}
}
else // chargement dans la brosse
{
free(Brush);
free(Smear_brush);
Brush=(byte *)malloc(width*height);
Brush_width=width;
Brush_height=height;
if (Brush)
{
Smear_brush=(byte *)malloc(width*height);
if (!Smear_brush)
File_error=3;
}
else
File_error=3;
}
}
}
void Draw_palette_preview(void)
{
short index;
if (Pixel_load_function==Pixel_load_in_preview)
for (index=0; index<256; index++)
Window_rectangle(183+(index/16)*7,95+(index&15)*5,5,5,index);
Update_window_area(183,95,120,80);
}
// Calcul du nom complet du fichier
void Get_full_filename(char * filename, byte is_colorix_format)
{
byte last_char;
strcpy(filename,Main_file_directory);
//On va ajouter un s<>parateur <20> la fin du chemin s'il n'y est pas encore
if (filename[strlen(filename)-1]!=PATH_SEPARATOR[0])
strcat(filename,PATH_SEPARATOR);
// Si on est en train de sauvegarder une image Colorix, on calcule son ext.
if (is_colorix_format)
{
last_char=strlen(Main_filename)-1;
if (Main_filename[last_char]=='?')
{
if (Main_image_width<=320)
Main_filename[last_char]='I';
else
{
if (Main_image_width<=360)
Main_filename[last_char]='Q';
else
{
if (Main_image_width<=640)
Main_filename[last_char]='F';
else
{
if (Main_image_width<=800)
Main_filename[last_char]='N';
else
Main_filename[last_char]='O';
}
}
}
}
}
strcat(filename,Main_filename);
}
/////////////////////////////////////////////////////////////////////////////
// Gestion des lectures et <20>critures //
/////////////////////////////////////////////////////////////////////////////
byte * Write_buffer;
word Write_buffer_index;
void Init_write_buffer(void)
{
Write_buffer=(byte *)malloc(64000);
Write_buffer_index=0;
}
void Write_one_byte(FILE *file, byte b)
{
Write_buffer[Write_buffer_index++]=b;
if (Write_buffer_index>=64000)
{
if (! Write_bytes(file,Write_buffer,64000))
File_error=1;
Write_buffer_index=0;
}
}
void End_write(FILE *file)
{
if (Write_buffer_index)
if (! Write_bytes(file,Write_buffer,Write_buffer_index))
File_error=1;
free(Write_buffer);
}
/////////////////////////////////////////////////////////////////////////////
// -------- Modifier la valeur du code d'erreur d'acc<63>s <20> un fichier --------
// On n'est pas oblig<69> d'utiliser cette fonction <20> chaque fois mais il est
// important de l'utiliser dans les cas du type:
// if (!File_error) *** else File_error=***;
// En fait, dans le cas o<> l'on modifie File_error alors qu'elle contient
// d<>j<EFBFBD> un code d'erreur.
void Set_file_error(int value)
{
if (File_error>=0)
File_error=value;
}
// -- Charger n'importe connu quel type de fichier d'image (ou palette) -----
void Load_image(byte image)
{
unsigned int index; // index de balayage des formats
T_Format *format = &(File_formats[2]); // Format du fichier <20> charger
// On place par d<>faut File_error <20> vrai au cas o<> on ne sache pas
// charger le format du fichier:
File_error=1;
if (Main_format>FORMAT_ALL_FILES)
{
format = Get_fileformat(Main_format);
if (format->Test)
format->Test();
}
if (File_error)
{
// Sinon, on va devoir scanner les diff<66>rents formats qu'on connait pour
// savoir <20> quel format est le fichier:
for (index=0; index < NB_KNOWN_FORMATS; index++)
{
format = Get_fileformat(index);
// Loadable format
if (format->Test == NULL)
continue;
// On appelle le testeur du format:
format->Test();
// On s'arr<72>te si le fichier est au bon format:
if (File_error==0)
break;
}
}
if (File_error)
{
// Last try: with SDL_image
Image_24b=0;
Ratio_of_loaded_image=PIXEL_SIMPLE;
Load_SDL_Image();
if (File_error)
{
// Sinon, l'appelant sera au courant de l'<27>chec grace <20> File_error;
// et si on s'appr<70>tait <20> faire un chargement d<>finitif de l'image (pas
// une preview), alors on flash l'utilisateur.
if (Pixel_load_function!=Pixel_load_in_preview)
Error(0);
return;
}
}
else
// Si on a su d<>terminer avec succ<63>s le format du fichier:
{
// On peut charger le fichier:
Image_24b=0;
Ratio_of_loaded_image=PIXEL_SIMPLE;
// Dans certains cas il est possible que le chargement plante
// apr<70>s avoir modifi<66> la palette. TODO
format->Load();
}
if (File_error>0)
{
Error(0);
}
if (Image_24b)
{
// On vient de charger une image 24b
if (!File_error)
{
// Le chargement a r<>ussi, on peut faire la conversion en 256 couleurs
if (Pixel_load_function==Pixel_load_in_current_screen)
{
// Cas d'un chargement dans l'image
Hide_cursor();
Cursor_shape=CURSOR_SHAPE_HOURGLASS;
Display_cursor();
Flush_update();
if (Convert_24b_bitmap_to_256(Main_screen,Buffer_image_24b,Main_image_width,Main_image_height,Main_palette))
File_error=2;
else
{
Set_palette(Main_palette);
}
}
else
{
// Cas d'un chargement dans la brosse
Hide_cursor();
Cursor_shape=CURSOR_SHAPE_HOURGLASS;
Display_cursor();
Flush_update();
if (Convert_24b_bitmap_to_256(Brush,Buffer_image_24b,Brush_width,Brush_height,Main_palette))
File_error=2;
}
}
free(Buffer_image_24b);
}
if (image)
{
if ( (File_error!=1) && (format->Backup_done) )
{
if (Pixel_load_function==Pixel_load_in_preview)
{
dword color_usage[256];
Count_used_colors_screen_area(color_usage,Preview_pos_X,Preview_pos_Y,Main_image_width/Preview_factor_X,Main_image_height/Preview_factor_Y);
//Count_used_colors(color_usage);
Display_cursor();
Set_nice_menu_colors(color_usage,1);
Hide_cursor();
}
// On consid<69>re que l'image charg<72>e n'est plus modifi<66>e
Main_image_is_modified=0;
// Et on documente la variable Main_fileformat avec la valeur:
Main_fileformat=format->Identifier;
// Correction des dimensions
if (Main_image_width<1)
Main_image_width=1;
if (Main_image_height<1)
Main_image_height=1;
}
else if (File_error!=1)
{
// On consid<69>re que l'image charg<72>e est encore modifi<66>e
Main_image_is_modified=1;
// Et on documente la variable Main_fileformat avec la valeur:
Main_fileformat=format->Identifier;
}
else
{
// Dans ce cas, on sait que l'image n'a pas chang<6E>, mais ses
// param<61>tres (dimension, palette, ...) si. Donc on les restaures.
Download_infos_page_main(Main_backups->Pages);
}
}
}
// -- Sauver n'importe quel type connu de fichier d'image (ou palette) ------
void Save_image(byte image)
{
T_Format *format;
// On place par d<>faut File_error <20> vrai au cas o<> on ne sache pas
// sauver le format du fichier: (Est-ce vraiment utile??? Je ne crois pas!)
File_error=1;
if (image)
{
if (!File_formats[Main_fileformat-1].Supports_layers
&& Main_backups->Pages->Nb_layers > 1)
{
if (! Confirmation_box("This format will save a flattened copy."))
{
// File_error is already set to 1.
return;
}
Read_pixel_function=Read_pixel_from_current_screen;
}
else
{
Read_pixel_function=Read_pixel_from_current_layer;
}
}
else
{
Read_pixel_function=Read_pixel_from_brush;
}
format = Get_fileformat(Main_fileformat);
if (format->Save)
format->Save();
if (File_error)
Error(0);
else
{
if ((image) && (Get_fileformat(Main_fileformat)->Backup_done))
Main_image_is_modified=0;
}
}
void Load_SDL_Image(void)
{
char filename[MAX_PATH_CHARACTERS]; // Nom complet du fichier
word x_pos,y_pos;
// long file_size;
dword pixel;
long file_size;
SDL_Surface * surface;
Get_full_filename(filename,0);
File_error=0;
surface = IMG_Load(filename);
if (!surface)
{
File_error=1;
return;
}
file_size=File_length(filename);
if (surface->format->BytesPerPixel == 1)
{
// 8bpp image
Init_preview(surface->w, surface->h, file_size ,FORMAT_MISC, PIXEL_SIMPLE);
// Read palette
if (surface->format->palette)
{
Get_SDL_Palette(surface->format->palette, Main_palette);
Set_palette(Main_palette);
Remap_fileselector();
}
Main_image_width=surface->w;
Main_image_height=surface->h;
for (y_pos=0; y_pos<Main_image_height; y_pos++)
{
for (x_pos=0; x_pos<Main_image_width; x_pos++)
{
Pixel_load_function(x_pos,y_pos,Get_SDL_pixel_8(surface, x_pos, y_pos));
}
}
}
else
{
// Hi/Trucolor
Init_preview_24b(surface->w, surface->h, file_size ,FORMAT_ALL_IMAGES);
Main_image_width=surface->w;
Main_image_height=surface->h;
for (y_pos=0; y_pos<Main_image_height; y_pos++)
{
for (x_pos=0; x_pos<Main_image_width; x_pos++)
{
pixel = Get_SDL_pixel_hicolor(surface, x_pos, y_pos);
Pixel_load_24b(
x_pos,
y_pos,
((pixel & surface->format->Rmask) >> surface->format->Rshift) << surface->format->Rloss,
((pixel & surface->format->Gmask) >> surface->format->Gshift) << surface->format->Gloss,
((pixel & surface->format->Bmask) >> surface->format->Bshift) << surface->format->Bloss);
}
}
}
SDL_FreeSurface(surface);
}
/// Saves an image.
/// This routine will only be called when all hope is lost, memory thrashed, etc
/// It's the last chance to save anything, but the code has to be extremely
/// careful, anything could happen.
/// The chosen format is IMG since it's extremely simple, difficult to make it
/// create an unusable image.
void Emergency_backup(const char *fname, byte *source, int width, int height, T_Palette *palette)
{
char filename[MAX_PATH_CHARACTERS]; // Nom complet du fichier
FILE *file;
short x_pos,y_pos;
T_IMG_Header IMG_header;
strcpy(filename,Config_directory);
strcat(filename,fname);
// Ouverture du fichier
file=fopen(filename,"wb");
if (!file)
return;
memcpy(IMG_header.Filler1,"\x01\x00\x47\x12\x6D\xB0",6);
memset(IMG_header.Filler2,0,118);
IMG_header.Filler2[4]=0xFF;
IMG_header.Filler2[22]=64; // Lo(Longueur de la signature)
IMG_header.Filler2[23]=0; // Hi(Longueur de la signature)
memcpy(IMG_header.Filler2+23,"GRAFX2 by SunsetDesign (IMG format taken from PV (c)W.Wiedmann)",64);
if (!Write_bytes(file,IMG_header.Filler1,6) ||
!Write_word_le(file,width) ||
!Write_word_le(file,height) ||
!Write_bytes(file,IMG_header.Filler2,118) ||
!Write_bytes(file,palette,sizeof(T_Palette)))
{
fclose(file);
return;
}
for (y_pos=0; ((y_pos<height) && (!File_error)); y_pos++)
for (x_pos=0; x_pos<width; x_pos++)
if (!Write_byte(file,*(source+y_pos*width+x_pos)))
{
fclose(file);
return;
}
// Ouf, sauv<75>
fclose(file);
}
void Image_emergency_backup()
{
Emergency_backup("phoenix.img",Main_screen, Main_image_width, Main_image_height, &Main_palette);
Emergency_backup("phoenix2.img",Spare_screen, Spare_image_width, Spare_image_height, &Spare_palette);
}
T_Format * Get_fileformat(byte format)
{
unsigned int i;
T_Format * safe_default = File_formats;
for (i=0; i < NB_KNOWN_FORMATS; i++)
{
if (File_formats[i].Identifier == format)
return &(File_formats[i]);
if (File_formats[i].Identifier == FORMAT_GIF)
safe_default=&(File_formats[i]);
}
// Normally impossible to reach this point, unless called with an invalid
// enum....
return safe_default;
}
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