diff options
Diffstat (limited to 'src/glut/beos/glutMenu.cpp')
| -rw-r--r-- | src/glut/beos/glutMenu.cpp | 322 |
1 files changed, 322 insertions, 0 deletions
diff --git a/src/glut/beos/glutMenu.cpp b/src/glut/beos/glutMenu.cpp new file mode 100644 index 00000000000..1dad5970c9d --- /dev/null +++ b/src/glut/beos/glutMenu.cpp @@ -0,0 +1,322 @@ +/*********************************************************** + * Copyright (C) 1997, Be Inc. All rights reserved. + * + * FILE: glutMenu.cpp + * + * DESCRIPTION: code for popup menu handling + ***********************************************************/ + +/*********************************************************** + * Headers + ***********************************************************/ +#include <GL/glut.h> +#include <stdlib.h> +#include <string.h> +#include "glutint.h" +#include "glutState.h" + +/*********************************************************** + * Private variables + ***********************************************************/ +static GlutMenu **menuList = 0; +static int menuListSize = 0; + +/*********************************************************** + * FUNCTION: getUnusedMenuSlot + * + * DESCRIPTION: helper function to get a new menu slot + ***********************************************************/ +GlutMenu *__glutGetMenuByNum(int menunum) +{ + if (menunum < 1 || menunum > menuListSize) { + return NULL; + } + return menuList[menunum - 1]; +} + +/*********************************************************** + * FUNCTION: getUnusedMenuSlot + * + * DESCRIPTION: helper function to get a new menu slot + ***********************************************************/ +static int +getUnusedMenuSlot(void) +{ + int i; + + /* Look for allocated, unused slot. */ + for (i = 0; i < menuListSize; i++) { + if (!menuList[i]) { + return i; + } + } + /* Allocate a new slot. */ + menuListSize++; + menuList = (GlutMenu **) + realloc(menuList, menuListSize * sizeof(GlutMenu *)); + if (!menuList) + __glutFatalError("out of memory."); + menuList[menuListSize - 1] = NULL; + return menuListSize - 1; +} + +/*********************************************************** + * FUNCTION: glutCreateMenu (6.1) + * + * DESCRIPTION: create a new menu + ***********************************************************/ +int APIENTRY +glutCreateMenu(GLUTselectCB selectFunc) +{ + GlutMenu *menu; + int menuid; + + menuid = getUnusedMenuSlot(); + menu = new GlutMenu(menuid, selectFunc); // constructor sets up members + menuList[menuid] = menu; + gState.currentMenu = menu; + return menuid + 1; +} + +/*********************************************************** + * FUNCTION: glutSetMenu (6.2) + * glutGetMenu + * + * DESCRIPTION: set and get the current menu + ***********************************************************/ +int APIENTRY +glutGetMenu(void) +{ + if (gState.currentMenu) { + return gState.currentMenu->id + 1; + } else { + return 0; + } +} + +void APIENTRY +glutSetMenu(int menuid) +{ + GlutMenu *menu; + + if (menuid < 1 || menuid > menuListSize) { + __glutWarning("glutSetMenu attempted on bogus menu."); + return; + } + menu = menuList[menuid - 1]; + if (!menu) { + __glutWarning("glutSetMenu attempted on bogus menu."); + return; + } + gState.currentMenu = menu; +} + +/*********************************************************** + * FUNCTION: glutDestroyMenu (6.3) + * + * DESCRIPTION: destroy the specified menu + ***********************************************************/ +void APIENTRY +glutDestroyMenu(int menunum) +{ + GlutMenu *menu = __glutGetMenuByNum(menunum); + menuList[menunum - 1] = 0; + if (gState.currentMenu == menu) { + gState.currentMenu = 0; + } + delete menu; +} + +/*********************************************************** + * FUNCTION: glutAddMenuEntry (6.4) + * + * DESCRIPTION: add a new menu item + ***********************************************************/ +void +glutAddMenuEntry(const char *label, int value) +{ + new GlutMenuItem(gState.currentMenu, false, value, label); +} + +/*********************************************************** + * FUNCTION: glutAddSubMenu (6.5) + * + * DESCRIPTION: add a new submenu + ***********************************************************/ +void +glutAddSubMenu(const char *label, int menu) +{ + new GlutMenuItem(gState.currentMenu, true, menu-1, label); +} + +/*********************************************************** + * FUNCTION: glutChangeToMenuEntry (6.6) + * + * DESCRIPTION: change menuitem into a menu entry + ***********************************************************/ +void +glutChangeToMenuEntry(int num, const char *label, int value) +{ + GlutMenuItem *item; + int i; + + i = gState.currentMenu->num; + item = gState.currentMenu->list; + while (item) { + if (i == num) { + free(item->label); + item->label = strdup(label); + item->isTrigger = false; + item->value = value; + return; + } + i--; + item = item->next; + } + __glutWarning("Current menu has no %d item.", num); +} + +/*********************************************************** + * FUNCTION: glutChangeToSubMenu (6.7) + * + * DESCRIPTION: change menuitem into a submenu + ***********************************************************/ +void +glutChangeToSubMenu(int num, const char *label, int menu) +{ + GlutMenuItem *item; + int i; + + i = gState.currentMenu->num; + item = gState.currentMenu->list; + while (item) { + if (i == num) { + free(item->label); + item->label = strdup(label); + item->isTrigger = true; + item->value = menu-1; + return; + } + i--; + item = item->next; + } + __glutWarning("Current menu has no %d item.", num); +} + +/*********************************************************** + * FUNCTION: glutRemoveMenuItem (6.8) + * + * DESCRIPTION: remove a menu item + ***********************************************************/ +void +glutRemoveMenuItem(int num) +{ + GlutMenuItem *item, **prev; + int i; + + i = gState.currentMenu->num; + prev = &gState.currentMenu->list; + item = gState.currentMenu->list; + + while (item) { + if (i == num) { + gState.currentMenu->num--; + + /* Patch up menu's item list. */ + *prev = item->next; + + free(item->label); + delete item; + return; + } + i--; + prev = &item->next; + item = item->next; + } + __glutWarning("Current menu has no %d item.", num); +} + +/*********************************************************** + * FUNCTION: glutAttachMenu (6.9) + * glutDetachMenu + * + * DESCRIPTION: attach and detach menu from view + ***********************************************************/ +void +glutAttachMenu(int button) +{ + gState.currentWindow->menu[button] = gState.currentMenu->id + 1; +} + +void +glutDetachMenu(int button) +{ + gState.currentWindow->menu[button] = 0; +} + +/*********************************************************** + * CLASS: GlutMenu + * + * FUNCTION: CreateBMenu + * + * DESCRIPTION: construct a BPopupMenu for this menu + ***********************************************************/ +BMenu *GlutMenu::CreateBMenu(bool toplevel) { + BMenu *bpopup; + if(toplevel) { + bpopup = new GlutPopUp(id+1); + } else { + bpopup = new BMenu(""); + } + GlutMenuItem *item = list; + while (item) { + GlutBMenuItem *bitem; + if(item->isTrigger) { + // recursively call CreateBMenu + bitem = new GlutBMenuItem(menuList[item->value]->CreateBMenu(false)); + bitem->SetLabel(item->label); + bitem->menu = 0; // real menu items start at 1 + bitem->value = 0; + } else { + bitem = new GlutBMenuItem(item->label); + bitem->menu = id + 1; + bitem->value = item->value; + } + bpopup->AddItem(bitem, 0); + item = item->next; + } + return bpopup; +} + +/*********************************************************** + * CLASS: GlutMenu + * + * FUNCTION: (destructor) + * + * DESCRIPTION: destroy the menu and its items (but not submenus!) + ***********************************************************/ +GlutMenu::~GlutMenu() { + while (list) { + GlutMenuItem *next = list->next; + delete list; + list = next; + } +} + +/*********************************************************** + * CLASS: GlutMenuItem + * + * FUNCTION: (constructor) + * + * DESCRIPTION: construct the new menu item and add to parent + ***********************************************************/ +GlutMenuItem::GlutMenuItem(GlutMenu *n_menu, bool n_trig, int n_value, const char *n_label) +{ + menu = n_menu; + isTrigger = n_trig; + value = n_value; + label = strdup(n_label); + next = menu->list; + menu->list = this; + menu->num++; +} |