grafX2/pages.h

94 lines
3.0 KiB
C

/* Grafx2 - The Ultimate 256-color bitmap paint program
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/>
*/
//////////////////////////////////////////////////////////////////////////////
///@file pages.h
/// Handler for the Undo/Redo system.
//////////////////////////////////////////////////////////////////////////////
#ifndef _PAGES_H_
#define _PAGES_H_
//////////////////////////////////////////////////////////////////////////
/////////////////////////// BACKUP ///////////////////////////////////////
//////////////////////////////////////////////////////////////////////////
///
/// INDIVIDUAL PAGES
///
void Download_infos_page_main(T_Page * page);
void Upload_infos_page_main(T_Page * page);
/// Add a new layer to latest page of a list. Returns 0 on success.
byte Add_layer(T_List_of_pages *list, byte layer);
/// Delete a layer from the latest page of a list. Returns 0 on success.
byte Delete_layer(T_List_of_pages *list, byte layer);
// private
T_Page * New_page(byte nb_layers);
void Download_infos_page_spare(T_Page * page);
void Upload_infos_page_spare(T_Page * page);
void Download_infos_backup(T_List_of_pages * list);
void Clear_page(T_Page * page);
void Copy_S_page(T_Page * dest,T_Page * source);
///
/// LISTS OF PAGES
///
void Init_list_of_pages(T_List_of_pages * list);
// private
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);
void Change_page_number_of_list(T_List_of_pages * list,int number);
void Free_page_of_a_list(T_List_of_pages * list);
///
/// BACKUP HIGH-LEVEL FUNCTIONS
///
int Init_all_backup_lists(int width,int height);
void Set_number_of_backups(int nb_backups);
int Backup_with_new_dimensions(int upload,byte layers,int width,int height);
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 Undo(void);
void Redo(void);
void Free_current_page(void); // 'Kill' button
void Exchange_main_and_spare(void);
void End_of_modification(void);
void Update_depth_buffer(void);
void Redraw_layered_image(void);
void Redraw_current_layer(void);
#endif