Makefile: Added missing png library to linker options (issue 141)

Fix the minimum screen size not enforced when resizing window (since r705)
Fix the mouse cursor position when changing pixel size (since r705)
In fileselector, the image preview now enforces "safe colors". (issue 116)


git-svn-id: svn://pulkomandy.tk/GrafX2/trunk@716 416bcca6-2ee7-4201-b75f-2eb2f807beb1

loadsave.c

@@ -514,7 +514,8 @@ void filename_complet(char * filename, byte is_colorix_format)
 void Read_one_byte(FILE * file, byte *b)
 {
   // FIXME : Replace les appelants par Read_bytes(), et gérer les retours d'erreur.
-  Read_byte(file, b);
+  if (!Read_byte(file, b))
+    File_error=2;
 }
 
 // --------------------------------------------------------------------------
@@ -645,6 +646,16 @@ void Load_image(byte image)
     {
       if ( (File_error!=1) && (File_formats[format].Backup_done) )
       {
+        if (Pixel_load_function==Pixel_load_in_preview)
+        {
+          dword  color_usage[256];
+          Count_used_colors_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 considère que l'image chargée n'est plus modifiée
         Main_image_is_modified=0;
         // Et on documente la variable Main_fileformat avec la valeur: