add support for save files etc

CHANGELOG

@@ -13,10 +13,18 @@
     "core=dynamic_x86" or "core=dynamic_rec" for either
     the dynamic_x86 core or the dynamic_rec core. Also
     thank joncampbell123 for the 64-bit fix. (Wengier)
+  - You can now use your own save file (in addition to
+    save slots! There are now a "Use save file" toggle
+    item and "Browse save file..." for browsing save
+    files on your computer. A new menu item "Display
+    state information" is added as well to display the
+    information of the saved state. (Wengier)
   - Save state feature now allows users to optionally
-    enter remarks when saving a state. A toggle menu
+    enter remarks when saving a state. A submenu group
-    item "No remark when saving state" (in "Capture")
+    "Save/load option" is added (under "Capture") where
-    is added to disable input of remarks. (Wengier)
+    you can toggle menu items "No remark when saving
+    state" (for disabling input of remarks when saving)
+    and "force load state mode". (Wengier)
   - DOSBox-X will now use native dialog box to display
     quit warnings and save state errors. (Wengier)
   - Updated the Windows installer to default to the

include/dosbox.h

@@ -299,7 +299,7 @@ public:
     void load   (size_t slot) const; //throw (Error)
     bool isEmpty(size_t slot) const;
     void removeState(size_t slot) const;
-    std::string getName(size_t slot) const;
+    std::string getName(size_t slot, bool nl=false) const;
 
     //initialization: register relevant components on program startup
     struct Component

src/dosbox.cpp

@@ -310,6 +310,8 @@ unsigned long long update_clockdom_from_now(ClockDomain &dst) {
 
 #include "paging.h"
 
+extern std::string savefilename;
+extern bool use_save_file;
 extern bool rom_bios_vptable_enable;
 extern bool rom_bios_8x8_cga_font;
 extern bool allow_port_92_reset;
@@ -783,7 +785,11 @@ void notifyError(const std::string& message, bool log=true)
 {
     if (log) LOG_MSG("%s",message.c_str());
 #if !defined(HX_DOS)
+    MAPPER_ReleaseAllKeys();
+    GFX_LosingFocus();
     tinyfd_messageBox("Error",message.c_str(),"ok","error", 1);
+    MAPPER_ReleaseAllKeys();
+    GFX_LosingFocus();
 #endif
 }
 
@@ -5095,7 +5101,7 @@ void SaveState::save(size_t slot) { //throw (Error)
 	std::stringstream slotname;
 	slotname << slot+1;
 	temp=path;
-	std::string save=temp+slotname.str()+".sav";
+	std::string save=use_save_file&&savefilename.size()?savefilename:temp+slotname.str()+".sav";
 	remove(save.c_str());
 	std::ofstream file (save.c_str());
 	file << "";
@@ -5224,7 +5230,11 @@ delete_all:
 void savestatecorrupt(const char* part) {
     LOG_MSG("Save state corrupted! Program in inconsistent state! - %s", part);
 #if !defined(HX_DOS)
+    MAPPER_ReleaseAllKeys();
+    GFX_LosingFocus();
     tinyfd_messageBox("Error","Save state corrupted! Program may not work.","ok","error", 1);
+    MAPPER_ReleaseAllKeys();
+    GFX_LosingFocus();
 #endif
 }
 
@@ -5276,12 +5286,12 @@ void SaveState::load(size_t slot) const { //throw (Error)
 	temp = path;
 	std::stringstream slotname;
 	slotname << slot+1;
-	std::string save=temp+slotname.str()+".sav";
+	std::string save=use_save_file&&savefilename.size()?savefilename:temp+slotname.str()+".sav";
 	std::ifstream check_slot;
 	check_slot.open(save.c_str(), std::ifstream::in);
 	if(check_slot.fail()) {
 		LOG_MSG("No saved slot - %d (%s)",(int)slot+1,save.c_str());
-		notifyError("The selected save slot is an empty slot.", false);
+		notifyError(use_save_file&&savefilename.size()?"The selected save file is currently empty.":"The selected save slot is an empty slot.", false);
 		load_err=true;
 		return;
 	}
@@ -5548,7 +5558,7 @@ void SaveState::removeState(size_t slot) const {
     }
 }
 
-std::string SaveState::getName(size_t slot) const {
+std::string SaveState::getName(size_t slot, bool nl) const {
 	if (slot >= SLOT_COUNT*MAX_PAGE) return "[Empty slot]";
 	std::string path;
 	bool Get_Custom_SaveDir(std::string& savedir);
@@ -5570,10 +5580,10 @@ std::string SaveState::getName(size_t slot) const {
 	temp = path;
 	std::stringstream slotname;
 	slotname << slot+1;
-	std::string save=temp+slotname.str()+".sav";
+	std::string save=nl&&use_save_file&&savefilename.size()?savefilename:temp+slotname.str()+".sav";
 	std::ifstream check_slot;
 	check_slot.open(save.c_str(), std::ifstream::in);
-	if (check_slot.fail()) return "[Empty slot]";
+	if (check_slot.fail()) return nl?"(Empty state)":"[Empty slot]";
 	my_miniunz((char **)save.c_str(),"Program_Name",temp.c_str());
 	std::ifstream check_title;
 	int length = 8;
@@ -5591,7 +5601,7 @@ std::string SaveState::getName(size_t slot) const {
 	check_title.close();
 	remove(tempname.c_str());
 	buffer1[length]='\0';
-    std::string ret="[Program: "+std::string(buffer1)+"]";
+    std::string ret=nl?"Program: "+(!strlen(buffer1)?"-":std::string(buffer1))+"\n":"[Program: "+std::string(buffer1)+"]";
 	my_miniunz((char **)save.c_str(),"Time_Stamp",temp.c_str());
     length=18;
 	tempname = temp+"Time_Stamp";
@@ -5608,7 +5618,7 @@ std::string SaveState::getName(size_t slot) const {
 	check_title.close();
 	remove(tempname.c_str());
 	buffer2[length]='\0';
-    if (strlen(buffer2)) ret+=" ("+std::string(buffer2);
+    if (strlen(buffer2)) ret+=nl?"Timestamp: "+(!strlen(buffer2)?"-":std::string(buffer2))+"\n":" ("+std::string(buffer2);
 	my_miniunz((char **)save.c_str(),"Save_Remark",temp.c_str());
     length=30;
 	tempname = temp+"Save_Remark";
@@ -5625,6 +5635,6 @@ std::string SaveState::getName(size_t slot) const {
 	check_title.close();
 	remove(tempname.c_str());
 	buffer3[length]='\0';
-    if (strlen(buffer3)) ret+=" - "+std::string(buffer3)+")";
+    if (strlen(buffer3)) ret+=nl?"Remark: "+(!strlen(buffer3)?"-":std::string(buffer3))+"\n":" - "+std::string(buffer3)+")";
 	return ret;
 }

src/gui/menu.cpp

@@ -567,11 +567,13 @@ static const char *def_menu_capture[] =
     "mapper_caprawmidi",
     "--",
 #endif
-    "noremark_savestate",
+    "saveoptionmenu",
-    "force_loadstate",
     "mapper_savestate",
     "mapper_loadstate",
     "saveslotmenu",
+    "usesavefile",
+    "browsesavefile",
+    "showstate",
     NULL
 };
 
@@ -589,6 +591,14 @@ static const char *def_menu_capture_format[] =
 # endif
 #endif
 
+/* Save/load options */
+static const char *save_load_options[] =
+{
+    "noremark_savestate",
+    "force_loadstate",
+    NULL
+};
+
 /* Save slots */
 static const char *def_save_slots[] =
 {
@@ -1417,6 +1427,7 @@ void ConstructMenu(void) {
     ConstructSubMenu(mainMenu.get_item("CaptureFormatMenu").get_master_id(), def_menu_capture_format);
 # endif
 #endif
+    ConstructSubMenu(mainMenu.get_item("saveoptionmenu").get_master_id(), save_load_options);
     ConstructSubMenu(mainMenu.get_item("saveslotmenu").get_master_id(), def_save_slots);
 
     /* Drive menu */

src/gui/sdlmain.cpp

@@ -45,7 +45,7 @@ extern bool noremark_save_state;
 extern bool force_load_state;
 extern bool use_quick_reboot;
 extern bool enable_config_as_shell_commands;
-bool winrun=false;
+bool winrun=false, use_save_file=false;
 bool direct_mouse_clipboard=false;
 #if defined(WIN32)
 extern int dos_clipboard_device_access;
@@ -814,7 +814,7 @@ extern bool keep_private_area_on_boot;
 extern bool dos_kernel_disabled;
 bool guest_machine_power_on = false;
 
-std::string custom_savedir;
+std::string custom_savedir, savefilename = "";
 
 void SHELL_Run();
 void DisableINT33();
@@ -8446,6 +8446,53 @@ bool force_loadstate_menu_callback(DOSBoxMenu * const menu, DOSBoxMenu::item * c
     return true;
 }
 
+bool browse_save_file_menu_callback(DOSBoxMenu * const menu, DOSBoxMenu::item * const menuitem) {
+    (void)menu;//UNUSED
+    const char *mname = menuitem->get_name().c_str();
+    if (!strcmp(mname, "browsesavefile")&&!use_save_file) return false;
+
+#if !defined(HX_DOS)
+    char CurrentDir[512];
+    char * Temp_CurrentDir = CurrentDir;
+    getcwd(Temp_CurrentDir, 512);
+    const char *lFilterPatterns[] = {"*.sav","*.SAV"};
+    const char *lFilterDescription = "Save files (*.sav)";
+    char const * lTheSaveFileName = tinyfd_saveFileDialog("Select an save file","",2,lFilterPatterns,lFilterDescription);
+    if (lTheSaveFileName!=NULL) {
+        savefilename = std::string(lTheSaveFileName);
+        mainMenu.get_item("usesavefile").set_text("Use save file"+(savefilename.size()?" ("+savefilename+")":"")).refresh_item(mainMenu);
+    }
+	chdir( Temp_CurrentDir );
+#endif
+    return true;
+}
+
+bool use_save_file_menu_callback(DOSBoxMenu * const menu, DOSBoxMenu::item * const menuitem) {
+    (void)menu;//UNUSED
+    (void)menuitem;//UNUSED
+    if (use_save_file) use_save_file=false;
+    else if (savefilename.size()) use_save_file=true;
+    else {
+        browse_save_file_menu_callback(menu, menuitem);
+        if (savefilename.size()) use_save_file=true;
+    }
+    mainMenu.get_item("usesavefile").check(use_save_file).refresh_item(mainMenu);
+    mainMenu.get_item("browsesavefile").enable(use_save_file).refresh_item(mainMenu);
+    return true;
+}
+
+bool show_save_state_menu_callback(DOSBoxMenu * const menu, DOSBoxMenu::item * const menuitem) {
+    (void)menu;//UNUSED
+    (void)menuitem;//UNUSED
+    MAPPER_ReleaseAllKeys();
+    GFX_LosingFocus();
+    std::string message = "Save to: "+(use_save_file&&savefilename.size()?"File "+savefilename:"Slot "+std::to_string(GetGameState_Run()+1))+"\n"+SaveState::instance().getName(GetGameState_Run(), true);
+    bool ret=tinyfd_messageBox("Saved state information", message.c_str(), "ok","info", 1);
+    MAPPER_ReleaseAllKeys();
+    GFX_LosingFocus();
+    return true;
+}
+
 void refresh_slots() {
     mainMenu.get_item("current_page").set_text("Current page: "+to_string(page+1)+"/10").refresh_item(mainMenu);
 	for (unsigned int i=0; i<SaveState::SLOT_COUNT; i++) {
@@ -9829,9 +9876,17 @@ int main(int argc, char* argv[]) SDL_MAIN_NOEXCEPT {
         }
 # endif
 		{
+            DOSBoxMenu::item &item = mainMenu.alloc_item(DOSBoxMenu::submenu_type_id,"saveoptionmenu");
+            item.set_text("Save/load option");
+        }
+		{
             DOSBoxMenu::item &item = mainMenu.alloc_item(DOSBoxMenu::submenu_type_id,"saveslotmenu");
             item.set_text("Select save slot");
-
+		}
+        {
+            mainMenu.alloc_item(DOSBoxMenu::item_type_id, "usesavefile").set_text("Use save file").set_callback_function(use_save_file_menu_callback).check(use_save_file);
+            mainMenu.alloc_item(DOSBoxMenu::item_type_id, "browsesavefile").set_text("Browse save file...").set_callback_function(browse_save_file_menu_callback).enable(use_save_file);
+            mainMenu.alloc_item(DOSBoxMenu::item_type_id, "showstate").set_text("Display state information").set_callback_function(show_save_state_menu_callback);
             {
 				mainMenu.alloc_item(DOSBoxMenu::item_type_id,"current_page").set_text("Current page: 1/10").enable(false).set_callback_function(refresh_slots_menu_callback);
 				mainMenu.alloc_item(DOSBoxMenu::item_type_id,"prev_page").set_text("Previous page").set_callback_function(prev_page_menu_callback);