[layers] Limited to 32 layers. (previously there was no limit and the 16-bit depth buffer wrapped). Fixed a display bug after picture transforms or layers add/del.

git-svn-id: svn://pulkomandy.tk/GrafX2/branches/layers@1075 416bcca6-2ee7-4201-b75f-2eb2f807beb1

engine.c

@@ -1042,6 +1042,7 @@ void Main_handler(void)
                   Hide_cursor();
                   Display_all_screen();
                   Display_cursor();
+                  End_of_modification();
                 }
                 action++;
                 break;
@@ -1054,6 +1055,7 @@ void Main_handler(void)
                   Hide_cursor();
                   Display_all_screen();
                   Display_cursor();
+                  End_of_modification();
                 }
                 action++;
                 break;

global.h

@@ -348,7 +348,7 @@ GFX2_GLOBAL short Main_magnifier_offset_Y;
 /// Index of layer currently being edited
 GFX2_GLOBAL int Main_current_layer;
 /// Bitfield that records which layers are visible. 2^0 for 0, 2^1 for 1, 2^2 for 2, etc.
-GFX2_GLOBAL word Main_layers_visible;
+GFX2_GLOBAL dword Main_layers_visible;
 
 // -- Spare page data
 
@@ -412,7 +412,7 @@ GFX2_GLOBAL short Spare_magnifier_offset_Y;
 /// Index of layer currently being edited
 GFX2_GLOBAL short Spare_current_layer;
 /// Bitfield that records which layers are visible. 2^0 for 0, 2^1 for 1, 2^2 for 2, etc.
-GFX2_GLOBAL word Spare_layers_visible;
+GFX2_GLOBAL dword Spare_layers_visible;
 // -- Image backups
 
 /// Backup of the current screen, used during drawing when FX feedback is OFF.

main.c

@@ -370,9 +370,9 @@ int Init_program(int argc,char * argv[])
   Main_fileselector_offset=0; // Au début, le fileselect est en haut de la liste des fichiers
   Main_format=0;
   Main_current_layer=0;
-  Main_layers_visible=0xFFFF;
+  Main_layers_visible=0xFFFFFFFF;
   Spare_current_layer=0;
-  Spare_layers_visible=0xFFFF;
+  Spare_layers_visible=0xFFFFFFFF;
   
   Spare_fileselector_position=0;
   Spare_fileselector_offset=0;

pages.c

@@ -36,7 +36,7 @@
   ///
 
 /// Bitfield which records which layers are backed up in Page 0.
-static word Last_backed_up_layers=0;
+static dword Last_backed_up_layers=0;
 
 /// Total number of unique bitmaps (layers, animation frames, backups)
 long Stats_pages_number=0;
@@ -483,7 +483,7 @@ void Free_last_page_of_list(T_List_of_pages * list)
 }
 
 // layer_mask tells which layers have to be fresh copies instead of references
-int Create_new_page(T_Page * new_page, T_List_of_pages * list, word layer_mask)
+int Create_new_page(T_Page * new_page, T_List_of_pages * list, dword layer_mask)
 {
 
 //   Cette fonction crée une nouvelle page dont les attributs correspondent à
@@ -697,7 +697,7 @@ int Backup_with_new_dimensions(int upload,byte layers,int width,int height)
   Upload_infos_page_main(new_page);
   new_page->Width=width;
   new_page->Height=height;
-  if (Create_new_page(new_page,Main_backups,0xFFFF))
+  if (Create_new_page(new_page,Main_backups,0xFFFFFFFF))
   {
     for (i=0; i<layers;i++)
     {
@@ -739,7 +739,7 @@ int Backup_and_resize_the_spare(int width,int height)
   Upload_infos_page_spare(new_page);
   new_page->Width=width;
   new_page->Height=height;
-  if (Create_new_page(new_page,Spare_backups,0xFFFF))
+  if (Create_new_page(new_page,Spare_backups,0xFFFFFFFF))
   {
     byte i;
     
@@ -764,7 +764,7 @@ void Backup(void)
   Backup_layers(1<<Main_current_layer);
 }
 
-void Backup_layers(word layer_mask)
+void Backup_layers(dword layer_mask)
 {
   int i;
   T_Page *new_page;
@@ -944,6 +944,10 @@ byte Add_layer(T_List_of_pages *list, byte layer)
   
   source_page = list->Pages;
   
+  // Hard limit of 32 at the moment, because layer bitmasks are 32bit.
+  if (list->Pages->Nb_layers == 32)
+    return 1;
+   
   // Keep the position reasonable
   if (layer > list->Pages->Nb_layers)
     layer = list->Pages->Nb_layers;
@@ -987,9 +991,9 @@ byte Add_layer(T_List_of_pages *list, byte layer)
 
   // Update the flags of visible layers. 
   {
-    word layers_before;
+    dword layers_before;
-    word layers_after;
+    dword layers_after;
-    word *visible_layers_flag;
+    dword *visible_layers_flag;
     
     // Determine if we're modifying the spare or the main page.
     if (list == Main_backups)
@@ -1048,9 +1052,9 @@ byte Delete_layer(T_List_of_pages *list, byte layer)
 
   // Update the flags of visible layers. 
   {
-    word layers_before;
+    dword layers_before;
-    word layers_after;
+    dword layers_after;
-    word *visible_layers_flag;
+    dword *visible_layers_flag;
     byte new_current_layer;
     
     // Determine if we're modifying the spare or the main page.

pages.h

@@ -62,7 +62,7 @@ int Allocate_list_of_pages(T_List_of_pages * list);
 void Backward_in_list_of_pages(T_List_of_pages * list);
 void Advance_in_list_of_pages(T_List_of_pages * list);
 void Free_last_page_of_list(T_List_of_pages * list);
-int Create_new_page(T_Page * new_page,T_List_of_pages * current_list, word layer_mask);
+int Create_new_page(T_Page * new_page,T_List_of_pages * current_list, dword layer_mask);
 void Change_page_number_of_list(T_List_of_pages * list,int number);
 void Free_page_of_a_list(T_List_of_pages * list);
 
@@ -79,7 +79,7 @@ int Backup_and_resize_the_spare(int width,int height);
 /// Backup with a new copy for the working layer, and references for all others.
 void Backup(void);
 /// Backup with a new copy of some layers (the others are references).
-void Backup_layers(word layer_mask);
+void Backup_layers(dword layer_mask);
 void Undo(void);
 void Redo(void);
 void Free_current_page(void); // 'Kill' button

special.c

@@ -481,10 +481,10 @@ void Layer_activate(short layer, short side)
     // Right-click on current layer
     if (Main_current_layer == layer)
     {
-      if (Main_layers_visible == (1<<layer))
+      if (Main_layers_visible == (dword)(1<<layer))
       {
         // Set all layers visible
-        Main_layers_visible = 0xFFFF;
+        Main_layers_visible = 0xFFFFFFFF;
       }
       else
       {

transform.c

@@ -430,6 +430,7 @@ void Button_Transform_menu(void)
       */
       Redraw_layered_image();
       Display_all_screen();
+      End_of_modification();
     }
     else
     {