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Implemented last-chance recovery that saves the current and spare page. (issue 97)

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Tested OK on Windows when crashing Contour (issue 119)
Doesn't handle frozen states (when killed in task manager), I'll have to look further.


git-svn-id: svn://pulkomandy.tk/GrafX2/trunk@628 416bcca6-2ee7-4201-b75f-2eb2f807beb1
This commit is contained in:
Yves Rizoud
2009-02-13 01:12:52 +00:00
parent 546dc6011f
commit d704c4f425
6 changed files with 164 additions and 14 deletions
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55
loadsave.c
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@@ -5864,3 +5864,58 @@ void Save_PNG(void)
row_pointers=NULL;
}
}
// 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 Largeur, int Hauteur, T_Palette *Palette)
{
char Nom_du_fichier[TAILLE_CHEMIN_FICHIER]; // Nom complet du fichier
FILE *Fichier;
short Pos_X,Pos_Y;
T_Header_IMG IMG_Header;
strcpy(Nom_du_fichier,Repertoire_de_configuration);
strcat(Nom_du_fichier,Fname);
// Ouverture du fichier
Fichier=fopen(Nom_du_fichier,"wb");
if (!Fichier)
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(Fichier,IMG_Header.Filler1,6) ||
!write_word_le(Fichier,Largeur) ||
!write_word_le(Fichier,Hauteur) ||
!write_bytes(Fichier,IMG_Header.Filler2,118) ||
!write_bytes(Fichier,Palette,sizeof(T_Palette)))
{
fclose(Fichier);
return;
}
for (Pos_Y=0; ((Pos_Y<Hauteur) && (!Erreur_fichier)); Pos_Y++)
for (Pos_X=0; Pos_X<Largeur; Pos_X++)
if (!write_byte(Fichier,*(Source+Pos_Y*Largeur+Pos_X)))
{
fclose(Fichier);
return;
}
// Ouf, sauvé
fclose(Fichier);
}
void Image_emergency_backup()
{
Emergency_backup("phoenix.img",Principal_Ecran, Principal_Largeur_image, Principal_Hauteur_image, &Principal_Palette);
Emergency_backup("phoenix2.img",Brouillon_Ecran, Brouillon_Largeur_image, Brouillon_Hauteur_image, &Brouillon_Palette);
}