m/grafX2
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
grafX2/src/loadsave.c
Thomas Bernard be824627ce loadsave.c: Add functions to open file with alternate extension. 
Used by CPC format which are in several files :
PPH format uses PPH, ODD, EVE
CM5 uses CM5 + GFX
2018-02-20 15:45:45 +01:00

1937 lines
58 KiB
C
Raw Blame History

/* vim:expandtab:ts=2 sw=2:
*/
/* Grafx2 - The Ultimate 256-color bitmap paint program
Copyright 2011 Pawel Góralski
Copyright 2010 Alexander Filyanov
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/>
*/
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifndef _MSC_VER
#include <unistd.h>
#endif
#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 "graph.h"
#include "op_c.h"
#include "pages.h"
#include "palette.h"
#include "sdlscreen.h"
#include "struct.h"
#include "windows.h"
#include "engine.h"
#include "brush.h"
#include "setup.h"
#include "filesel.h"
#include "unicode.h"
// -- PKM -------------------------------------------------------------------
void Test_PKM(T_IO_Context *);
void Load_PKM(T_IO_Context *);
void Save_PKM(T_IO_Context *);
// -- IFF -------------------------------------------------------------------
void Test_LBM(T_IO_Context *);
void Test_PBM(T_IO_Context *);
void Test_ACBM(T_IO_Context *);
void Load_IFF(T_IO_Context *);
void Save_IFF(T_IO_Context *);
// -- GIF -------------------------------------------------------------------
void Test_GIF(T_IO_Context *);
void Load_GIF(T_IO_Context *);
void Save_GIF(T_IO_Context *);
// -- PCX -------------------------------------------------------------------
void Test_PCX(T_IO_Context *);
void Load_PCX(T_IO_Context *);
void Save_PCX(T_IO_Context *);
// -- BMP -------------------------------------------------------------------
void Test_BMP(T_IO_Context *);
void Load_BMP(T_IO_Context *);
void Save_BMP(T_IO_Context *);
// -- IMG -------------------------------------------------------------------
void Test_IMG(T_IO_Context *);
void Load_IMG(T_IO_Context *);
void Save_IMG(T_IO_Context *);
// -- SCx -------------------------------------------------------------------
void Test_SCx(T_IO_Context *);
void Load_SCx(T_IO_Context *);
void Save_SCx(T_IO_Context *);
// -- CEL -------------------------------------------------------------------
void Test_CEL(T_IO_Context *);
void Load_CEL(T_IO_Context *);
void Save_CEL(T_IO_Context *);
// -- KCF -------------------------------------------------------------------
void Test_KCF(T_IO_Context *);
void Load_KCF(T_IO_Context *);
void Save_KCF(T_IO_Context *);
// -- PAL -------------------------------------------------------------------
void Test_PAL(T_IO_Context *);
void Load_PAL(T_IO_Context *);
void Save_PAL(T_IO_Context *);
// -- GPL -------------------------------------------------------------------
void Test_GPL(T_IO_Context *);
void Load_GPL(T_IO_Context *);
void Save_GPL(T_IO_Context *);
// -- PI1 -------------------------------------------------------------------
void Test_PI1(T_IO_Context *);
void Load_PI1(T_IO_Context *);
void Save_PI1(T_IO_Context *);
// -- PC1 -------------------------------------------------------------------
void Test_PC1(T_IO_Context *);
void Load_PC1(T_IO_Context *);
void Save_PC1(T_IO_Context *);
// -- NEO -------------------------------------------------------------------
void Test_NEO(T_IO_Context *);
void Load_NEO(T_IO_Context *);
void Save_NEO(T_IO_Context *);
// -- C64 -------------------------------------------------------------------
void Test_C64(T_IO_Context *);
void Load_C64(T_IO_Context *);
void Save_C64(T_IO_Context *);
// -- SCR (Amstrad CPC)
void Save_SCR(T_IO_Context *);
// -- CM5 (Amstrad CPC)
void Test_CM5(T_IO_Context *);
void Load_CM5(T_IO_Context *);
void Save_CM5(T_IO_Context *);
// -- PPH (Amstrad CPC)
void Test_PPH(T_IO_Context *);
void Load_PPH(T_IO_Context *);
void Save_PPH(T_IO_Context *);
// -- XPM (X PixMap)
// Loading is done through SDL_Image
void Save_XPM(T_IO_Context*);
// -- ICO (Windows ICO)
void Test_ICO(T_IO_Context *);
void Load_ICO(T_IO_Context *);
void Save_ICO(T_IO_Context *);
// -- PNG -------------------------------------------------------------------
#ifndef __no_pnglib__
void Test_PNG(T_IO_Context *);
void Load_PNG(T_IO_Context *);
void Save_PNG(T_IO_Context *);
#endif
// -- SDL_Image -------------------------------------------------------------
// (TGA, BMP, PNM, XPM, XCF, PCX, GIF, JPG, TIF, IFF, PNG, ICO)
void Load_SDL_Image(T_IO_Context *);
// ENUM Name TestFunc LoadFunc SaveFunc PalOnly Comment Layers Ext Exts
const T_Format File_formats[] = {
{FORMAT_ALL_IMAGES, "(all)", NULL, NULL, NULL, 0, 0, 0, "", "gif;png;bmp;2bp;pcx;pkm;iff;lbm;ilbm;sham;ham;ham6;ham8;acbm;pic;anim;img;sci;scq;scf;scn;sco;pi1;pc1;cel;neo;c64;koa;koala;fli;bml;cdu;prg;tga;pnm;xpm;xcf;jpg;jpeg;tif;tiff;ico;ic2;cur;cm5;pph"},
{FORMAT_ALL_PALETTES, "(pal)", NULL, NULL, NULL, 1, 0, 0, "", "kcf;pal;gpl"},
{FORMAT_ALL_FILES, "(*.*)", NULL, NULL, NULL, 0, 0, 0, "", "*"},
{FORMAT_GIF, " gif", Test_GIF, Load_GIF, Save_GIF, 0, 1, 1, "gif", "gif"},
#ifndef __no_pnglib__
{FORMAT_PNG, " png", Test_PNG, Load_PNG, Save_PNG, 0, 1, 0, "png", "png"},
#endif
{FORMAT_BMP, " bmp", Test_BMP, Load_BMP, Save_BMP, 0, 0, 0, "bmp", "bmp;2bp"},
{FORMAT_PCX, " pcx", Test_PCX, Load_PCX, Save_PCX, 0, 0, 0, "pcx", "pcx"},
{FORMAT_PKM, " pkm", Test_PKM, Load_PKM, Save_PKM, 0, 1, 0, "pkm", "pkm"},
{FORMAT_LBM, " lbm", Test_LBM, Load_IFF, Save_IFF, 0, 1, 0, "iff", "iff;lbm;ilbm;sham;ham;ham6;ham8;anim"},
{FORMAT_PBM, " pbm", Test_PBM, Load_IFF, Save_IFF, 0, 1, 0, "iff", "iff;pbm;lbm"},
{FORMAT_ACBM," acbm",Test_ACBM,Load_IFF, NULL, 0, 1, 0, "iff", "iff;pic;acbm"},
{FORMAT_IMG, " img", Test_IMG, Load_IMG, Save_IMG, 0, 0, 0, "img", "img"},
{FORMAT_SCx, " sc?", Test_SCx, Load_SCx, Save_SCx, 0, 0, 0, "sc?", "sci;scq;scf;scn;sco"},
{FORMAT_PI1, " pi1", Test_PI1, Load_PI1, Save_PI1, 0, 0, 0, "pi1", "pi1"},
{FORMAT_PC1, " pc1", Test_PC1, Load_PC1, Save_PC1, 0, 0, 0, "pc1", "pc1"},
{FORMAT_CEL, " cel", Test_CEL, Load_CEL, Save_CEL, 0, 0, 0, "cel", "cel"},
{FORMAT_NEO, " neo", Test_NEO, Load_NEO, Save_NEO, 0, 0, 0, "neo", "neo"},
{FORMAT_KCF, " kcf", Test_KCF, Load_KCF, Save_KCF, 1, 0, 0, "kcf", "kcf"},
{FORMAT_PAL, " pal", Test_PAL, Load_PAL, Save_PAL, 1, 0, 0, "pal", "pal"},
{FORMAT_GPL, " gpl", Test_GPL, Load_GPL, Save_GPL, 1, 0, 0, "gpl", "gpl"},
{FORMAT_C64, " c64", Test_C64, Load_C64, Save_C64, 0, 1, 0, "c64", "c64;koa;koala;fli;bml;cdu;prg"},
{FORMAT_SCR, " cpc", NULL, NULL, Save_SCR, 0, 0, 0, "cpc", "cpc;scr"},
{FORMAT_CM5, " cm5", Test_CM5, Load_CM5, Save_CM5, 0, 0, 1, "cm5", "cm5"},
{FORMAT_PPH, " pph", Test_PPH, Load_PPH, Save_PPH, 0, 0, 1, "pph", "pph"},
{FORMAT_XPM, " xpm", NULL, NULL, Save_XPM, 0, 0, 0, "xpm", "xpm"},
{FORMAT_ICO, " ico", Test_ICO, Load_ICO, Save_ICO, 0, 0, 0, "ico", "ico;ic2;cur"},
{FORMAT_MISC,"misc.",NULL, NULL, NULL, 0, 0, 0, "", "tga;pnm;xpm;xcf;jpg;jpeg;tif;tiff"},
};
/// Total number of known file formats
unsigned int Nb_known_formats(void)
{
return sizeof(File_formats)/sizeof(File_formats[0]);
}
/// Set the color of a pixel (on load)
void Set_pixel(T_IO_Context *context, short x_pos, short y_pos, byte color)
{
// Clipping
if ((x_pos>=context->Width) || (y_pos>=context->Height))
return;
switch (context->Type)
{
// Chargement des pixels dans l'écran principal
case CONTEXT_MAIN_IMAGE:
Pixel_in_current_screen(x_pos,y_pos,color);
break;
// Chargement des pixels dans la brosse
case CONTEXT_BRUSH:
//Pixel_in_brush(x_pos,y_pos,color);
*(context->Buffer_image + y_pos * context->Pitch + x_pos)=color;
break;
// Chargement des pixels dans la preview
case CONTEXT_PREVIEW:
// Skip pixels of transparent index if :
// it's a layer above the first one
if (color == context->Transparent_color && context->Current_layer > 0)
break;
if (((x_pos % context->Preview_factor_X)==0) && ((y_pos % context->Preview_factor_Y)==0))
{
// Tag the color as 'used'
context->Preview_usage[color]=1;
// Store pixel
if (context->Ratio == PIXEL_WIDE &&
Pixel_ratio != PIXEL_WIDE &&
Pixel_ratio != PIXEL_WIDE2)
{
context->Preview_bitmap[x_pos/context->Preview_factor_X*2 + (y_pos/context->Preview_factor_Y)*PREVIEW_WIDTH*Menu_factor_X]=color;
context->Preview_bitmap[x_pos/context->Preview_factor_X*2+1 + (y_pos/context->Preview_factor_Y)*PREVIEW_WIDTH*Menu_factor_X]=color;
}
else if (context->Ratio == PIXEL_TALL &&
Pixel_ratio != PIXEL_TALL &&
Pixel_ratio != PIXEL_TALL2 &&
Pixel_ratio != PIXEL_TALL3)
{
context->Preview_bitmap[x_pos/context->Preview_factor_X + (y_pos/context->Preview_factor_Y*2)*PREVIEW_WIDTH*Menu_factor_X]=color;
context->Preview_bitmap[x_pos/context->Preview_factor_X + (y_pos/context->Preview_factor_Y*2+1)*PREVIEW_WIDTH*Menu_factor_X]=color;
}
else
context->Preview_bitmap[x_pos/context->Preview_factor_X + (y_pos/context->Preview_factor_Y)*PREVIEW_WIDTH*Menu_factor_X]=color;
}
break;
// Load pixels in a SDL_Surface
case CONTEXT_SURFACE:
if (x_pos>=0 && y_pos>=0 && x_pos<context->Surface->w && y_pos<context->Surface->h)
*(((byte *)(context->Surface->pixels)) + context->Surface->pitch * y_pos + x_pos) = color;
break;
case CONTEXT_PALETTE:
case CONTEXT_PREVIEW_PALETTE:
break;
}
}
void Fill_canvas(T_IO_Context *context, byte color)
{
switch (context->Type)
{
case CONTEXT_PREVIEW:
if (context->Current_layer!=0)
return;
memset(context->Preview_bitmap, color, PREVIEW_WIDTH*PREVIEW_HEIGHT*Menu_factor_X*Menu_factor_Y);
break;
case CONTEXT_MAIN_IMAGE:
memset(
Main.backups->Pages->Image[Main.current_layer].Pixels,
color,
Main.backups->Pages->Width*Main.backups->Pages->Height);
break;
case CONTEXT_BRUSH:
memset(context->Buffer_image, color, (long)context->Height*context->Pitch);
break;
case CONTEXT_SURFACE:
break;
case CONTEXT_PALETTE:
case CONTEXT_PREVIEW_PALETTE:
break;
}
}
// Chargement des pixels dans le buffer 24b
void Set_pixel_24b(T_IO_Context *context, short x_pos, short y_pos, byte r, byte g, byte b)
{
byte color;
// Clipping
if (x_pos<0 || y_pos<0 || x_pos>=context->Width || y_pos>=context->Height)
return;
switch(context->Type)
{
case CONTEXT_MAIN_IMAGE:
case CONTEXT_BRUSH:
case CONTEXT_SURFACE:
{
int index;
index=(y_pos*context->Width)+x_pos;
context->Buffer_image_24b[index].R=r;
context->Buffer_image_24b[index].G=g;
context->Buffer_image_24b[index].B=b;
}
break;
case CONTEXT_PREVIEW:
if (((x_pos % context->Preview_factor_X)==0) && ((y_pos % context->Preview_factor_Y)==0))
{
color=((r >> 5) << 5) |
((g >> 5) << 2) |
((b >> 6));
// Tag the color as 'used'
context->Preview_usage[color]=1;
context->Preview_bitmap[x_pos/context->Preview_factor_X + (y_pos/context->Preview_factor_Y)*PREVIEW_WIDTH*Menu_factor_X]=color;
}
break;
case CONTEXT_PREVIEW_PALETTE:
case CONTEXT_PALETTE:
// In a palette, there are no pixels!
break;
}
}
// Création d'une palette fake
void Set_palette_fake_24b(T_Palette palette)
{
int color;
// Génération 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;
}
}
void Set_frame_duration(T_IO_Context *context, int duration)
{
switch(context->Type)
{
case CONTEXT_MAIN_IMAGE:
Main.backups->Pages->Image[context->Current_layer].Duration = duration;
break;
default:
break;
}
}
int Get_frame_duration(T_IO_Context *context)
{
switch(context->Type)
{
case CONTEXT_MAIN_IMAGE:
return Main.backups->Pages->Image[context->Current_layer].Duration;
default:
return 0;
}
}
///
/// Generic allocation and similar stuff, done at beginning of image load,
/// as soon as size is known.
void Pre_load(T_IO_Context *context, short width, short height, long file_size, int format, enum PIXEL_RATIO ratio, byte bpp)
{
char str[10];
byte truecolor;
if (bpp == 0)
bpp = 8; // default to 8bits
truecolor = (bpp > 8) ? 1 : 0;
context->bpp = bpp;
context->Pitch = width; // default
context->Width = width;
context->Height = height;
context->Ratio = ratio;
context->Nb_layers = 1;
context->Transparent_color=0;
context->Background_transparent=0;
switch(context->Type)
{
// Preview
case CONTEXT_PREVIEW:
// Préparation du chargement d'une preview:
context->Preview_bitmap=calloc(1, PREVIEW_WIDTH*PREVIEW_HEIGHT*Menu_factor_X*Menu_factor_Y);
if (!context->Preview_bitmap)
File_error=1;
// Affichage des données "Image size:"
if ((width<10000) && (height<10000))
{
Num2str(width,str,4);
Num2str(height,str+5,4);
str[4]='x';
}
else
{
memcpy(str, "VERY BIG!", 10);
}
Print_in_window(101,59,str,MC_Black,MC_Light);
snprintf(str, sizeof(str), "%2dbpp", bpp);
Print_in_window(181,59,str,MC_Black,MC_Light);
// Affichage de la taille du fichier
if (file_size<1048576)
{
// Le fichier fait moins d'un Mega, on affiche sa taille direct
Num2str(file_size,str,7);
}
else if (((file_size+512)/1024)<100000)
{
// Le fichier fait plus d'un Mega, on peut afficher sa taille en Ko
Num2str((file_size+512)/1024,str,5);
strcpy(str+5,"KB");
}
else
{
// Le fichier fait plus de 100 Mega octets (cas très rare :))
memcpy(str,"LARGE!!",8);
}
Print_in_window(236,59,str,MC_Black,MC_Light);
// Affichage du vrai format
if (format!=Selector->Format_filter)
{
Print_in_window( 59,59,Get_fileformat(format)->Label,MC_Black,MC_Light);
}
// On efface le commentaire précédent
Window_rectangle(45,70,32*8,8,MC_Light);
// Calcul des données nécessaires à 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 &&
Pixel_ratio != PIXEL_TALL3)
height*=2;
context->Preview_factor_X=Round_div_max(width,120*Menu_factor_X);
context->Preview_factor_Y=Round_div_max(height, 80*Menu_factor_Y);
if ( (!Config.Maximize_preview) && (context->Preview_factor_X!=context->Preview_factor_Y) )
{
if (context->Preview_factor_X>context->Preview_factor_Y)
context->Preview_factor_Y=context->Preview_factor_X;
else
context->Preview_factor_X=context->Preview_factor_Y;
}
context->Preview_pos_X=Window_pos_X+183*Menu_factor_X;
context->Preview_pos_Y=Window_pos_Y+ 95*Menu_factor_Y;
// On nettoie la zone où va s'afficher la preview:
Window_rectangle(183,95,PREVIEW_WIDTH,PREVIEW_HEIGHT,MC_Light);
// Un update pour couvrir les 4 zones: 3 libellés plus le commentaire
Update_window_area(45,48,256,30);
// Zone de preview
Update_window_area(183,95,PREVIEW_WIDTH,PREVIEW_HEIGHT);
break;
// Other loading
case CONTEXT_MAIN_IMAGE:
if (Backup_new_image(1,width,height))
{
// La nouvelle page a pu être allouée, elle est pour l'instant pleine
// de 0s. Elle fait Main_image_width de large.
// Normalement tout va bien, tout est sous contrôle...
// Load into layer 0, by default.
context->Nb_layers=1;
Main.current_layer=0;
Main.layers_visible=1<<0;
Set_loading_layer(context,0);
// Remove previous comment, unless we load just a palette
if (! Get_fileformat(context->Format)->Palette_only)
context->Comment[0]='\0';
}
else
{
// Afficher un message d'erreur
// Pour être sûr que ce soit lisible.
Compute_optimal_menu_colors(context->Palette);
Message_out_of_memory();
File_error=1; // 1 => On n'a pas perdu l'image courante
}
break;
case CONTEXT_BRUSH:
context->Buffer_image = (byte *)malloc(width*height);
if (! context->Buffer_image)
{
File_error=3;
return;
}
context->Target_address=context->Buffer_image;
break;
case CONTEXT_SURFACE:
context->Surface = SDL_CreateRGBSurface(SDL_SWSURFACE|SDL_SRCCOLORKEY, width, height, 8, 0, 0, 0, 0);
if (! context->Surface)
{
File_error=1;
return;
}
//context->Pitch = context->Surface->pitch;
//context->Target_address = context->Surface->pixels;
break;
case CONTEXT_PALETTE:
case CONTEXT_PREVIEW_PALETTE:
// In a palette, there are no pixels!
break;
}
if (File_error)
return;
// Extra process for truecolor images
if (truecolor)
{
switch(context->Type)
{
case CONTEXT_MAIN_IMAGE:
case CONTEXT_BRUSH:
case CONTEXT_SURFACE:
// Allocate 24bit buffer
context->Buffer_image_24b=
(T_Components *)malloc(width*height*sizeof(T_Components));
if (!context->Buffer_image_24b)
{
// Print an error message
// The following is to be sure the message is readable
Compute_optimal_menu_colors(context->Palette);
Message_out_of_memory();
File_error=1;
}
break;
case CONTEXT_PREVIEW:
// 3:3:2 "True Color" palette will be loaded lated in context->Palette
// There can be an image palette used to decode the true color picture
// Such as for HAM ILBM pictures
break;
case CONTEXT_PALETTE:
case CONTEXT_PREVIEW_PALETTE:
// In a palette, there are no pixels!
break;
}
}
}
/////////////////////////////////////////////////////////////////////////////
// Gestion des lectures et écritures //
/////////////////////////////////////////////////////////////////////////////
void Write_one_byte(FILE *file, byte b)
{
if (! Write_byte(file,b))
File_error=1;
}
/////////////////////////////////////////////////////////////////////////////
// -------- Modifier la valeur du code d'erreur d'accès à un fichier --------
// On n'est pas obligé d'utiliser cette fonction à 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 où l'on modifie File_error alors qu'elle contient
// dèjà 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(T_IO_Context *context)
{
unsigned int index; // index de balayage des formats
const T_Format *format = &(File_formats[FORMAT_ALL_FILES+1]); // Format du fichier à charger
int i;
byte old_cursor_shape;
// Not sure it's the best place...
context->Color_cycles=0;
// On place par défaut File_error à vrai au cas où on ne sache pas
// charger le format du fichier:
File_error=1;
if (context->Format>FORMAT_ALL_FILES)
{
format = Get_fileformat(context->Format);
if (format->Test)
format->Test(context);
}
if (File_error)
{
// Sinon, on va devoir scanner les différents formats qu'on connait pour
// savoir à 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(context);
// On s'arrête si le fichier est au bon format:
if (File_error==0)
break;
}
}
if (File_error)
{
context->Format = DEFAULT_FILEFORMAT;
// Last try: with SDL_image
Load_SDL_Image(context);
if (File_error)
{
// Sinon, l'appelant sera au courant de l'échec grace à File_error;
// et si on s'apprêtait à faire un chargement définitif 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 déterminer avec succès le format du fichier:
{
context->Format = format->Identifier;
// On peut charger le fichier:
// Dans certains cas il est possible que le chargement plante
// après avoir modifié la palette. TODO
format->Load(context);
}
if (File_error>0)
{
fprintf(stderr,"Unable to load file %s (error %d)!\n",context->File_name, File_error);
if (context->Type!=CONTEXT_SURFACE)
Error(0);
}
// Post-load
if (context->Buffer_image_24b)
{
// On vient de charger une image 24b
if (!File_error)
{
switch(context->Type)
{
case CONTEXT_MAIN_IMAGE:
// Cas d'un chargement dans l'image
old_cursor_shape=Cursor_shape;
Hide_cursor();
Cursor_shape=CURSOR_SHAPE_HOURGLASS;
Display_cursor();
Flush_update();
if (Convert_24b_bitmap_to_256(Main.backups->Pages->Image[0].Pixels,context->Buffer_image_24b,context->Width,context->Height,context->Palette))
File_error=2;
Hide_cursor();
Cursor_shape=old_cursor_shape;
Display_cursor();
break;
case CONTEXT_BRUSH:
// Cas d'un chargement dans la brosse
old_cursor_shape=Cursor_shape;
Hide_cursor();
Cursor_shape=CURSOR_SHAPE_HOURGLASS;
Display_cursor();
Flush_update();
if (Convert_24b_bitmap_to_256(context->Buffer_image,context->Buffer_image_24b,context->Width,context->Height,context->Palette))
File_error=2;
Hide_cursor();
Cursor_shape=old_cursor_shape;
Display_cursor();
break;
case CONTEXT_PREVIEW:
// in this context, context->Buffer_image_24b is not allocated
// pixels are drawn to context->Preview_bitmap
break;
case CONTEXT_SURFACE:
if (Convert_24b_bitmap_to_256(context->Surface->pixels,context->Buffer_image_24b,context->Width,context->Height,context->Palette))
File_error=1;
break;
case CONTEXT_PALETTE:
case CONTEXT_PREVIEW_PALETTE:
// In a palette, there are no pixels!
break;
}
}
free(context->Buffer_image_24b);
context->Buffer_image_24b = NULL;
}
else if (context->Type == CONTEXT_MAIN_IMAGE)
{
// Non-24b main image: Add menu colors
if (Config.Safety_colors)
{
dword color_usage[256];
memset(color_usage,0,sizeof(color_usage));
if (Count_used_colors(color_usage)<252)
{
int gui_index;
// From white to black
for (gui_index=3; gui_index>=0; gui_index--)
{
int c;
T_Components gui_color;
gui_color=*Favorite_GUI_color(gui_index);
// Try find a very close match (ignore last 2 bits)
for (c=255; c>=0; c--)
{
if ((context->Palette[c].R|3) == (gui_color.R|3)
&& (context->Palette[c].G|3) == (gui_color.G|3)
&& (context->Palette[c].B|3) == (gui_color.B|3) )
break;
}
if (c<0) // Not found
{
// Find an unused slot at end of palette
for (c=255; c>=0; c--)
{
if (color_usage[c]==0)
{
context->Palette[c]=gui_color;
// Tag as a used color
color_usage[c]=1;
break;
}
}
}
}
}
}
}
if (context->Type == CONTEXT_MAIN_IMAGE)
{
if ( File_error!=1)
{
Set_palette(context->Palette);
if (format->Palette_only)
{
// Make a backup step
Backup_layers(LAYER_NONE);
}
// Copy the loaded palette
memcpy(Main.palette, context->Palette, sizeof(T_Palette));
memcpy(Main.backups->Pages->Palette, context->Palette, sizeof(T_Palette));
// For formats that handle more than just the palette:
// Transfer the data to main image.
if (!format->Palette_only)
{
if (context->Original_file_name && context->Original_file_name[0]
&& context->Original_file_directory && context->Original_file_directory[0])
{
strcpy(Main.backups->Pages->Filename,context->Original_file_name);
strcpy(Main.backups->Pages->File_directory,context->Original_file_directory);
Main.backups->Pages->Filename_unicode[0] = 0;
}
else
{
strcpy(Main.backups->Pages->Filename,context->File_name);
strcpy(Main.backups->Pages->File_directory,context->File_directory);
if (context->File_name_unicode)
Unicode_strlcpy(Main.backups->Pages->Filename_unicode, context->File_name_unicode, MAX_PATH_CHARACTERS);
else
Main.backups->Pages->Filename_unicode[0] = 0;
}
// On considère que l'image chargée n'est plus modifiée
Main.image_is_modified=0;
// Et on documente la variable Main_fileformat avec la valeur:
Main.fileformat=format->Identifier;
// already done initially on Backup_with_new_dimensions
//Main_image_width= context->Width;
//Main_image_height= context->Height;
if (Main.backups->Pages->Image_mode == IMAGE_MODE_ANIMATION)
{
Main.current_layer = 0;
}
else
{
Main.current_layer = context->Nb_layers - 1;
Main.layers_visible = (2<<Main.current_layer)-1;
}
// Load the transparency data
Main.backups->Pages->Transparent_color = context->Transparent_color;
Main.backups->Pages->Background_transparent = context->Background_transparent;
// Correction des dimensions
if (Main.image_width<1)
Main.image_width=1;
if (Main.image_height<1)
Main.image_height=1;
// Color cyling ranges:
for (i=0; i<16; i++)
Main.backups->Pages->Gradients->Range[i].Speed=0;
for (i=0; i<context->Color_cycles; i++)
{
Main.backups->Pages->Gradients->Range[i].Start=context->Cycle_range[i].Start;
Main.backups->Pages->Gradients->Range[i].End=context->Cycle_range[i].End;
Main.backups->Pages->Gradients->Range[i].Inverse=context->Cycle_range[i].Inverse;
Main.backups->Pages->Gradients->Range[i].Speed=context->Cycle_range[i].Speed;
}
// Comment
strcpy(Main.backups->Pages->Comment, context->Comment);
}
}
else if (File_error!=1)
{
// On considère que l'image chargée est encore modifiée
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 changé, mais ses
// paramètres (dimension, palette, ...) si. Donc on les restaures.
Download_infos_page_main(Main.backups->Pages);
}
}
else if (context->Type == CONTEXT_PALETTE)
{
if ( File_error!=1)
{
Set_palette(context->Palette);
// Make a backup step
Backup_layers(LAYER_NONE);
// Copy the loaded palette
memcpy(Main.palette, context->Palette, sizeof(T_Palette));
memcpy(Main.backups->Pages->Palette, context->Palette, sizeof(T_Palette));
}
}
else if (context->Type == CONTEXT_BRUSH && File_error==0)
{
// For brushes, Back_color is the transparent color.
// Set it before remapping, Remap_brush() will take care of it
if (context->Background_transparent)
Back_color = context->Transparent_color;
if (Realloc_brush(context->Width, context->Height, context->Buffer_image, NULL))
{
File_error=3;
free(context->Buffer_image);
}
memcpy(Brush_original_palette, context->Palette, sizeof(T_Palette));
Remap_brush();
context->Buffer_image = NULL;
}
else if (context->Type == CONTEXT_SURFACE)
{
if (File_error == 0)
{
// Copy the palette
SDL_Color colors[256];
int i;
for (i=0; i<256; i++)
{
colors[i].r=context->Palette[i].R;
colors[i].g=context->Palette[i].G;
colors[i].b=context->Palette[i].B;
}
SDL_SetColors(context->Surface, colors, 0, 256);
}
}
else if (context->Type == CONTEXT_PREVIEW || context->Type == CONTEXT_PREVIEW_PALETTE
/*&& !context->Buffer_image_24b*/
/*&& !Get_fileformat(context->Format)->Palette_only*/)
{
// Try to adapt the palette to accomodate the GUI.
int c;
int count_unused;
byte unused_color[4];
if (context->Type == CONTEXT_PREVIEW && context->bpp > 8)
Set_palette_fake_24b(context->Palette);
count_unused=0;
// Try find 4 unused colors and insert good colors there
for (c=255; c>=0 && count_unused<4; c--)
{
if (!context->Preview_usage[c])
{
unused_color[count_unused]=c;
count_unused++;
}
}
// Found! replace them with some favorites
if (count_unused==4)
{
int gui_index;
for (gui_index=0; gui_index<4; gui_index++)
{
context->Palette[unused_color[gui_index]]=*Favorite_GUI_color(gui_index);
}
}
// All preview display is here
// Update palette and screen first
Compute_optimal_menu_colors(context->Palette);
Remap_screen_after_menu_colors_change();
Set_palette(context->Palette);
// Display palette preview
if (Get_fileformat(context->Format)->Palette_only
|| context->Type == CONTEXT_PREVIEW_PALETTE)
{
short index;
if (context->Type == CONTEXT_PREVIEW || context->Type == CONTEXT_PREVIEW_PALETTE)
for (index=0; index<256; index++)
Window_rectangle(183+(index/16)*7,95+(index&15)*5,5,5,index);
}
// Display normal image
else if (context->Preview_bitmap)
{
int x_pos,y_pos;
int width,height;
width=context->Width/context->Preview_factor_X;
height=context->Height/context->Preview_factor_Y;
if (context->Ratio == PIXEL_WIDE &&
Pixel_ratio != PIXEL_WIDE &&
Pixel_ratio != PIXEL_WIDE2)
width*=2;
else if (context->Ratio == PIXEL_TALL &&
Pixel_ratio != PIXEL_TALL &&
Pixel_ratio != PIXEL_TALL2 &&
Pixel_ratio != PIXEL_TALL3)
height*=2;
for (y_pos=0; y_pos<height;y_pos++)
for (x_pos=0; x_pos<width;x_pos++)
{
byte color=context->Preview_bitmap[x_pos+y_pos*PREVIEW_WIDTH*Menu_factor_X];
// Skip transparent if image has transparent background.
if (color == context->Transparent_color && context->Background_transparent)
color=MC_Window;
Pixel(context->Preview_pos_X+x_pos,
context->Preview_pos_Y+y_pos,
color);
}
}
// Refresh modified part
Update_window_area(183,95,PREVIEW_WIDTH,PREVIEW_HEIGHT);
// Preview comment
Print_in_window(45,70,context->Comment,MC_Black,MC_Light);
//Update_window_area(45,70,32*8,8);
}
}
// -- Sauver n'importe quel type connu de fichier d'image (ou palette) ------
void Save_image(T_IO_Context *context)
{
const T_Format *format;
// On place par défaut File_error à vrai au cas où on ne sache pas
// sauver le format du fichier: (Est-ce vraiment utile??? Je ne crois pas!)
File_error=1;
switch (context->Type)
{
case CONTEXT_MAIN_IMAGE:
if ((!Get_fileformat(context->Format)->Supports_layers)
&& (Main.backups->Pages->Nb_layers > 1)
&& (!Get_fileformat(context->Format)->Palette_only))
{
if (Main.backups->Pages->Image_mode == IMAGE_MODE_ANIMATION)
{
if (! Confirmation_box("This format doesn't support\nanimation and will save only\ncurrent frame. Proceed?"))
{
// File_error is already set to 1.
return;
}
// current layer
context->Nb_layers=1;
context->Target_address=Main.backups->Pages->Image[Main.current_layer].Pixels;
}
else // all other layer-based formats
{
int clicked_button;
Open_window(208,100,"Format warning");
Print_in_window( 8, 20,"This file format doesn't",MC_Black,MC_Light);
Print_in_window( 8, 30,"support layers.",MC_Black,MC_Light);
Window_set_normal_button(23,44, 162,14,"Save flattened copy",0,1,KEY_NONE); // 1
Window_set_normal_button(23,62, 162,14,"Save current frame" ,0,1,KEY_NONE); // 2
Window_set_normal_button(23,80, 162,14,"Cancel" ,0,1,KEY_ESC); // 3
Update_window_area(0,0,Window_width, Window_height);
Display_cursor();
do
{
clicked_button=Window_clicked_button();
// Some help on file formats ?
//if (Is_shortcut(Key,0x100+BUTTON_HELP))
//{
// Key=0;
// Window_help(???, NULL);
//}
}
while (clicked_button<=0);
Close_window();
Display_cursor();
switch(clicked_button)
{
case 1: // flatten
context->Nb_layers=1;
context->Target_address=Main.visible_image.Image;
break;
case 2: // current layer
context->Nb_layers=1;
context->Target_address=Main.backups->Pages->Image[Main.current_layer].Pixels;
break;
default: // Cancel
// File_error is already set to 1.
return;
}
}
}
break;
case CONTEXT_BRUSH:
break;
case CONTEXT_PREVIEW:
case CONTEXT_PREVIEW_PALETTE:
break;
case CONTEXT_SURFACE:
break;
case CONTEXT_PALETTE:
// In a palette, there are no pixels!
break;
}
format = Get_fileformat(context->Format);
if (format->Save)
format->Save(context);
if (File_error)
{
Error(0);
return;
}
}
void Load_SDL_Image(T_IO_Context *context)
{
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, context->File_name, context->File_directory);
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
Pre_load(context, surface->w, surface->h, file_size ,FORMAT_MISC, PIXEL_SIMPLE, 8);
// Read palette
if (surface->format->palette)
{
Get_SDL_Palette(surface->format->palette, context->Palette);
}
for (y_pos=0; y_pos<context->Height; y_pos++)
{
for (x_pos=0; x_pos<context->Width; x_pos++)
{
Set_pixel(context, x_pos, y_pos, Get_SDL_pixel_8(surface, x_pos, y_pos));
}
}
}
else
{
{
// Hi/Trucolor
Pre_load(context, surface->w, surface->h, file_size ,FORMAT_ALL_IMAGES, PIXEL_SIMPLE, 8 * surface->format->BytesPerPixel);
}
for (y_pos=0; y_pos<context->Height; y_pos++)
{
for (x_pos=0; x_pos<context->Width; x_pos++)
{
pixel = Get_SDL_pixel_hicolor(surface, x_pos, y_pos);
Set_pixel_24b(
context,
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);
}
///
/// Load an arbitrary SDL_Surface.
/// @param full_name Full (absolute) path of the file to load.
/// @param gradients Pass the address of a target T_Gradient_array if you want the gradients, NULL otherwise
SDL_Surface * Load_surface(char *full_name, T_Gradient_array *gradients)
{
SDL_Surface * bmp=NULL;
T_IO_Context context;
Init_context_surface(&context, full_name, "");
Load_image(&context);
if (context.Surface)
{
bmp=context.Surface;
// Caller wants the gradients:
if (gradients != NULL)
{
int i;
memset(gradients, 0, sizeof(T_Gradient_array));
for (i=0; i<context.Color_cycles; i++)
{
gradients->Range[i].Start=context.Cycle_range[i].Start;
gradients->Range[i].End=context.Cycle_range[i].End;
gradients->Range[i].Inverse=context.Cycle_range[i].Inverse;
gradients->Range[i].Speed=context.Cycle_range[i].Speed;
}
}
}
Destroy_context(&context);
return bmp;
}
/// 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;
if (width == 0 || height == 0 || source == NULL)
return;
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, sauvé
fclose(file);
}
void Image_emergency_backup()
{
if (Main.backups && Main.backups->Pages && Main.backups->Pages->Nb_layers == 1)
Emergency_backup(SAFETYBACKUP_PREFIX_A "999999" BACKUP_FILE_EXTENSION,Main_screen, Main.image_width, Main.image_height, &Main.palette);
if (Spare.backups && Spare.backups->Pages && Spare.backups->Pages->Nb_layers == 1)
Emergency_backup(SAFETYBACKUP_PREFIX_B "999999" BACKUP_FILE_EXTENSION,Spare.visible_image.Image, Spare.image_width, Spare.image_height, &Spare.palette);
}
const T_Format * Get_fileformat(byte format)
{
unsigned int i;
const 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;
}
/// Query the color of a pixel (to save)
byte Get_pixel(T_IO_Context *context, short x, short y)
{
return *(context->Target_address + y*context->Pitch + x);
}
/// Cleans up resources
void Destroy_context(T_IO_Context *context)
{
free(context->Buffer_image_24b);
free(context->Buffer_image);
free(context->Preview_bitmap);
memset(context, 0, sizeof(T_IO_Context));
}
/// Setup for loading a preview in fileselector
void Init_context_preview(T_IO_Context * context, char *file_name, char *file_directory)
{
memset(context, 0, sizeof(T_IO_Context));
context->Type = CONTEXT_PREVIEW;
context->File_name = file_name;
context->File_directory = file_directory;
context->Format = Main.fileformat; // FIXME ?
}
// Setup for loading/saving an intermediate backup
void Init_context_backup_image(T_IO_Context * context, char *file_name, char *file_directory)
{
Init_context_layered_image(context, file_name, file_directory);
}
/// Setup for loading/saving the current main image
void Init_context_layered_image(T_IO_Context * context, char *file_name, char *file_directory)
{
int i;
memset(context, 0, sizeof(T_IO_Context));
context->Type = CONTEXT_MAIN_IMAGE;
context->File_name = file_name;
context->File_directory = file_directory;
context->Format = Main.fileformat;
memcpy(context->Palette, Main.palette, sizeof(T_Palette));
context->Width = Main.image_width;
context->Height = Main.image_height;
context->Nb_layers = Main.backups->Pages->Nb_layers;
strcpy(context->Comment, Main.backups->Pages->Comment);
context->Transparent_color=Main.backups->Pages->Transparent_color;
context->Background_transparent=Main.backups->Pages->Background_transparent;
if (Pixel_ratio == PIXEL_WIDE || Pixel_ratio == PIXEL_WIDE2)
context->Ratio=PIXEL_WIDE;
else if (Pixel_ratio == PIXEL_TALL || Pixel_ratio == PIXEL_TALL2 || Pixel_ratio == PIXEL_TALL3)
context->Ratio=PIXEL_TALL;
else
context->Ratio=PIXEL_SIMPLE;
context->Target_address=Main.backups->Pages->Image[0].Pixels;
context->Pitch=Main.image_width;
// Color cyling ranges:
for (i=0; i<16; i++)
{
if (Main.backups->Pages->Gradients->Range[i].Start!=Main.backups->Pages->Gradients->Range[i].End)
{
context->Cycle_range[context->Color_cycles].Start=Main.backups->Pages->Gradients->Range[i].Start;
context->Cycle_range[context->Color_cycles].End=Main.backups->Pages->Gradients->Range[i].End;
context->Cycle_range[context->Color_cycles].Inverse=Main.backups->Pages->Gradients->Range[i].Inverse;
context->Cycle_range[context->Color_cycles].Speed=Main.backups->Pages->Gradients->Range[i].Speed;
context->Color_cycles++;
}
}
}
/// Setup for loading/saving the flattened version of current main image
//void Init_context_flat_image(T_IO_Context * context, char *file_name, char *file_directory)
//{
//}
/// Setup for loading/saving the user's brush
void Init_context_brush(T_IO_Context * context, char *file_name, char *file_directory)
{
memset(context, 0, sizeof(T_IO_Context));
context->Type = CONTEXT_BRUSH;
context->File_name = file_name;
context->File_directory = file_directory;
context->Format = Brush_fileformat;
// Use main screen's palette
memcpy(context->Palette, Main.palette, sizeof(T_Palette));
context->Width = Brush_width;
context->Height = Brush_height;
context->Nb_layers = 1;
context->Transparent_color=Back_color; // Transparent color for brushes
context->Background_transparent=1;
context->Ratio=PIXEL_SIMPLE;
context->Target_address=Brush;
context->Pitch=Brush_width;
}
// Setup for loading an image into a new SDL surface.
void Init_context_surface(T_IO_Context * context, char *file_name, char *file_directory)
{
memset(context, 0, sizeof(T_IO_Context));
context->Type = CONTEXT_SURFACE;
context->File_name = file_name;
context->File_directory = file_directory;
context->Format = DEFAULT_FILEFORMAT;
// context->Palette
// context->Width
// context->Height
context->Nb_layers = 1;
context->Transparent_color=0;
context->Background_transparent=0;
context->Ratio=PIXEL_SIMPLE;
//context->Target_address
//context->Pitch
}
/// Function to call when need to switch layers.
void Set_saving_layer(T_IO_Context *context, int layer)
{
context->Current_layer = layer;
if (context->Type == CONTEXT_MAIN_IMAGE)
{
if (context->Nb_layers==1 && Main.backups->Pages->Nb_layers!=1)
{
// Context is set to saving a single layer: do nothing
}
else
{
context->Target_address=Main.backups->Pages->Image[layer].Pixels;
}
}
}
/// Function to call when need to switch layers.
void Set_loading_layer(T_IO_Context *context, int layer)
{
context->Current_layer = layer;
if (context->Type == CONTEXT_MAIN_IMAGE)
{
// This awful thing is the part that happens on load
while (layer >= context->Nb_layers)
{
if (Add_layer(Main.backups, layer))
{
// Failure to add a layer on load:
// Position on last layer
layer = context->Nb_layers-1;
break;
}
context->Nb_layers = Main.backups->Pages->Nb_layers;
Main.layers_visible = (2<<layer)-1;
}
Main.current_layer = layer;
context->Target_address=Main.backups->Pages->Image[layer].Pixels;
Update_pixel_renderer();
}
}
// ============================================
// Safety backups
// ============================================
typedef struct T_String_list
{
char * String;
struct T_String_list * Next;
} T_String_list;
/// A list of files, used for scanning a directory
T_String_list *Backups_main = NULL;
/// A list of files, used for scanning a directory
T_String_list *Backups_spare = NULL;
// Settings for safety backup (frequency, numbers, etc)
const int Rotation_safety_backup = 8;
const int Min_interval_for_safety_backup = 30000;
const int Min_edits_for_safety_backup = 10;
const int Max_interval_for_safety_backup = 60000;
const int Max_edits_for_safety_backup = 30;
///
/// Adds a file to Backups_main or Backups_spare lists, if it's a backup.
///
static void Add_backup_file(const char * full_name, const char *file_name)
{
T_String_list ** list;
T_String_list * elem;
int i;
(void)full_name;
// Only files names of the form a0000000.* and b0000000.* are expected
// Check first character
if (file_name[0]==Main.safety_backup_prefix)
list = &Backups_main;
else if (file_name[0]==Spare.safety_backup_prefix)
list = &Backups_spare;
else {
// Not a good file
return;
}
// Check next characters till file extension
i = 1;
while (file_name[i]!='\0' && file_name[i]!='.')
{
if (file_name[i]< '0' || file_name[i] > '9')
{
// Not a good file
return;
}
i++;
}
// Add to list (top insertion)
elem = (T_String_list *)malloc(sizeof(T_String_list));
elem->String=strdup(file_name);
elem->Next=*list;
*list=elem;
}
/// String comparer for sorting
int String_compare (const void * a, const void * b)
{
return strcmp(*(char**)a,*(char**)b);
}
///
/// Reload safety backups, by loading several files in the right order.
///
byte Process_backups(T_String_list **list)
{
int nb_files;
int i;
char ** files_vector;
T_String_list *element;
byte backup_max_undo_pages;
if (*list == NULL)
return 0;
// Save the maximum number of pages
// (It's used in Create_new_page() which gets called on each Load_image)
backup_max_undo_pages = Config.Max_undo_pages;
Config.Max_undo_pages = 99;
// Count files
nb_files=0;
element=*list;
while (element != NULL)
{
nb_files++;
element = element->Next;
}
// Allocate a vector
files_vector = (char **)malloc(sizeof(char *) * nb_files);
// Copy from list to vector
for (i=0;i<nb_files;i++)
{
T_String_list *next;
files_vector[i]=(*list)->String;
next = (*list)->Next;
free(*list);
*list = next;
}
// Sort the vector
qsort (files_vector, nb_files , sizeof(char **), String_compare);
for (i=0; i < nb_files; i++)
{
// Load this file
T_IO_Context context;
char file_name[MAX_PATH_CHARACTERS]="";
char file_directory[MAX_PATH_CHARACTERS]="";
Init_context_backup_image(&context, files_vector[i], Config_directory);
// Provide buffers to read original location
context.Original_file_name = file_name;
context.Original_file_directory = file_directory;
Load_image(&context);
Main.image_is_modified=1;
Destroy_context(&context);
Redraw_layered_image();
Display_all_screen();
}
// Done with the vector
for (i=0; i < nb_files; i++)
{
free(files_vector[i]);
}
free(files_vector);
files_vector = NULL;
// Restore the maximum number of pages
Config.Max_undo_pages = backup_max_undo_pages;
return nb_files;
}
/// Global indicator that tells if the safety backup system is active
byte Safety_backup_active = 0;
///
/// Checks if there are any pending safety backups, and then opens them.
/// @return 0 if no problem, -1 if the backup system cannot be activated, >=1 if some backups are restored
int Check_recovery(void)
{
int restored_spare;
int restored_main;
// First check if can write backups
#if defined (__MINT__)
//TODO: enable file lock under Freemint only
return 0;
#else
if (Create_lock_file(Config_directory))
return -1;
#endif
Safety_backup_active=1;
Backups_main = NULL;
Backups_spare = NULL;
For_each_file(Config_directory, Add_backup_file);
// Do the processing twice: once for possible backups of the main page,
// once for possible backups of the spare.
restored_spare = Process_backups(&Backups_spare);
if (restored_spare)
{
Main.offset_X=0;
Main.offset_Y=0;
Compute_limits();
Compute_paintbrush_coordinates();
if (Backups_main)
Button_Page();
}
restored_main = Process_backups(&Backups_main);
if (restored_main)
{
Main.offset_X=0;
Main.offset_Y=0;
Compute_limits();
Compute_paintbrush_coordinates();
}
return restored_main + restored_spare;
}
void Rotate_safety_backups(void)
{
Uint32 now;
T_IO_Context context;
char file_name[12+1];
char deleted_file[MAX_PATH_CHARACTERS];
if (!Safety_backup_active)
return;
now = SDL_GetTicks();
// It's time to save if either:
// - Many edits have taken place
// - A minimum number of edits have taken place AND a minimum time has passed
// - At least one edit was done, and a maximum time has passed
if ((Main.edits_since_safety_backup > Max_edits_for_safety_backup) ||
(Main.edits_since_safety_backup > Min_edits_for_safety_backup &&
now > Main.time_of_safety_backup + Min_interval_for_safety_backup) ||
(Main.edits_since_safety_backup > 1 &&
now > Main.time_of_safety_backup + Max_interval_for_safety_backup))
{
// Clear a previous save (rotating saves)
sprintf(deleted_file, "%s%c%6.6d" BACKUP_FILE_EXTENSION,
Config_directory,
Main.safety_backup_prefix,
(Uint32)(Main.safety_number + 1000000l - Rotation_safety_backup) % (Uint32)1000000l);
remove(deleted_file); // no matter if fail
// Reset counters
Main.edits_since_safety_backup=0;
Main.time_of_safety_backup=now;
// Create a new file name and save
sprintf(file_name, "%c%6.6d" BACKUP_FILE_EXTENSION,
Main.safety_backup_prefix,
(Uint32)Main.safety_number);
Init_context_backup_image(&context, file_name, Config_directory);
context.Format=FORMAT_GIF;
// Provide original file data, to store as a GIF Application Extension
context.Original_file_name = Main.backups->Pages->Filename;
context.Original_file_directory = Main.backups->Pages->File_directory;
Save_image(&context);
Destroy_context(&context);
Main.safety_number++;
}
}
/// Remove safety backups. Need to call on normal program exit.
void Delete_safety_backups(void)
{
T_String_list *element;
if (!Safety_backup_active)
return;
Backups_main = NULL;
Backups_spare = NULL;
For_each_file(Config_directory, Add_backup_file);
Change_directory(Config_directory);
for (element=Backups_main; element!=NULL; element=element->Next)
{
if(remove(element->String))
printf("Failed to delete %s\n",element->String);
}
for (element=Backups_spare; element!=NULL; element=element->Next)
{
if(remove(element->String))
printf("Failed to delete %s\n",element->String);
}
// Release lock file
#if defined (__MINT__)
//TODO: release file lock under Freemint only
#else
Release_lock_file(Config_directory);
#endif
}
/// For use by Save_XXX() functions
FILE * Open_file_write(T_IO_Context *context)
{
char filename[MAX_PATH_CHARACTERS]; // filename with full path
#if defined(WIN32)
WCHAR filename_unicode[MAX_PATH_CHARACTERS];
FILE * f;
if (context->File_name_unicode != NULL)
{
Unicode_char_strlcpy((word *)filename_unicode, context->File_directory, MAX_PATH_CHARACTERS);
Unicode_char_strlcat((word *)filename_unicode, PATH_SEPARATOR, MAX_PATH_CHARACTERS);
Unicode_strlcat((word *)filename_unicode, context->File_name_unicode, MAX_PATH_CHARACTERS);
f = _wfopen(filename_unicode, L"wb");
if (f != NULL)
{
// Now the file has been created, retrieve its short (ASCII) name
WCHAR shortpath[MAX_PATH_CHARACTERS];
DWORD len = GetShortPathNameW(filename_unicode, shortpath, MAX_PATH_CHARACTERS);
if (len > 0 && len < MAX_PATH_CHARACTERS)
{
DWORD start, index;
for (start = len; start > 0 && shortpath[start-1] != '\\'; start--);
for (index = 0; index < MAX_PATH_CHARACTERS - 1 && index < len - start; index++)
context->File_name[index] = shortpath[start + index];
context->File_name[index] = '\0';
}
}
return f;
}
#endif
Get_full_filename(filename, context->File_name, context->File_directory);
return fopen(filename, "wb");
}
FILE * Open_file_write_with_alternate_ext(T_IO_Context *context, const char * ext)
{
char *p;
char filename[MAX_PATH_CHARACTERS]; // filename with full path
#if defined(WIN32)
WCHAR filename_unicode[MAX_PATH_CHARACTERS];
WCHAR * pw;
if (context->File_name_unicode != NULL)
{
Unicode_char_strlcpy((word *)filename_unicode, context->File_directory, MAX_PATH_CHARACTERS);
Unicode_char_strlcat((word *)filename_unicode, PATH_SEPARATOR, MAX_PATH_CHARACTERS);
Unicode_strlcat((word *)filename_unicode, context->File_name_unicode, MAX_PATH_CHARACTERS);
pw = wcschr(filename_unicode, (WCHAR)'.');
if (pw != NULL)
*pw = 0;
Unicode_char_strlcat((word *)filename_unicode, ".", MAX_PATH_CHARACTERS);
Unicode_char_strlcat((word *)filename_unicode, ext, MAX_PATH_CHARACTERS);
return _wfopen(filename_unicode, L"wb");
}
#endif
Get_full_filename(filename, context->File_name, context->File_directory);
p = strrchr(filename, '.');
if (p != NULL)
*p = '\0';
strcat(filename, ".");
strcat(filename, ext);
return fopen(filename, "wb");
}
/// For use by Load_XXX() and Test_XXX() functions
FILE * Open_file_read(T_IO_Context *context)
{
char filename[MAX_PATH_CHARACTERS]; // filename with full path
Get_full_filename(filename, context->File_name, context->File_directory);
return fopen(filename, "rb");
}
struct T_Find_alternate_ext_data
{
const char * ext;
char basename[MAX_PATH_CHARACTERS];
word basename_unicode[MAX_PATH_CHARACTERS];
char foundname[MAX_PATH_CHARACTERS];
word foundname_unicode[MAX_PATH_CHARACTERS];
};
static void Look_for_alternate_ext(void * pdata, const char * filename, const word * filename_unicode, byte is_file, byte is_directory, byte is_hidden)
{
size_t base_len;
struct T_Find_alternate_ext_data * params = (struct T_Find_alternate_ext_data *)pdata;
(void)is_hidden;
(void)is_directory;
if (!is_file)
return;
if (filename_unicode != NULL && params->basename_unicode[0] != 0)
{
base_len = Unicode_strlen(params->basename_unicode);
if (filename_unicode[base_len] != '.')
return; // No match.
#if defined(WIN32)
{
WCHAR temp_string[MAX_PATH_CHARACTERS];
memcpy(temp_string, filename_unicode, base_len * sizeof(word));
temp_string[base_len] = 0;
if (_wcsicmp((const WCHAR *)params->basename_unicode, temp_string) != 0)
return; // No match.
}
#else
if (memcmp(params->basename_unicode, filename_unicode, base_len * sizeof(word)) != 0)
return; // No match.
#endif
if (Unicode_char_strcasecmp(filename_unicode + base_len + 1, params->ext) != 0)
return; // No match.
// it is a match !
Unicode_strlcpy(params->foundname_unicode, filename_unicode, MAX_PATH_CHARACTERS);
strncpy(params->foundname, filename, MAX_PATH_CHARACTERS);
}
else
{
base_len = strlen(params->basename);
if (filename[base_len] != '.')
return; // No match.
#if defined(WIN32)
if (_memicmp(params->basename, filename, base_len) != 0) // Not case sensitive
return; // No match.
#else
if (memcmp(params->basename, filename, base_len) != 0)
return; // No match.
#endif
if (strcasecmp(filename + base_len + 1, params->ext) != 0)
return; // No match.
params->foundname_unicode[0] = 0;
strncpy(params->foundname, filename, MAX_PATH_CHARACTERS);
}
}
FILE * Open_file_read_with_alternate_ext(T_IO_Context *context, const char * ext)
{
char * p;
struct T_Find_alternate_ext_data params;
memset(&params, 0, sizeof(params));
params.ext = ext;
strncpy(params.basename, context->File_name, MAX_PATH_CHARACTERS);
p = strrchr(params.basename, '.');
if (p != NULL)
*p = '\0';
if (context->File_name_unicode != NULL)
{
size_t i = Unicode_strlen(context->File_name_unicode);
memcpy(params.basename_unicode, context->File_name_unicode, (i + 1) * sizeof(word));
while (i-- > 0)
if (params.basename_unicode[i] == (word)'.')
{
params.basename_unicode[i] = 0;
break;
}
}
For_each_directory_entry(context->File_directory, &params, Look_for_alternate_ext);
if (params.foundname[0] != '\0')
{
char filename[MAX_PATH_CHARACTERS]; // filename with full path
Get_full_filename(filename, params.foundname, context->File_directory);
return fopen(filename, "rb");
}
return NULL;
}
/// For use by Save_XXX() functions
void Remove_file(T_IO_Context *context)
{
char filename[MAX_PATH_CHARACTERS]; // filename with full path
Get_full_filename(filename, context->File_name, context->File_directory);
remove(filename);
}
Reference in New Issue View Git Blame Copy Permalink