Karl Zweimüller / Menu

Library to display menus on TextLCDs. Interaction with functions Up,Down and Select (Buttons or RPG) Based on menu-library from pyeh9

Fork of Menu by Peihsun Yeh

Library to display menus on TextLCDs. Interaction with functions Up,Down and Select (Buttons or RPG) Based on menu-library from pyeh9

Navigator.cpp@10:2b6ddf53b05e, 2015-03-16 (annotated)

Committer:
charly
Date:
Mon Mar 16 21:05:37 2015 +0000
Revision:
10:2b6ddf53b05e
Parent:
9:c9df0b33d176
Child:
11:6814cbc83ae0
First version of a Yes/No Question with UserInterface and result.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
pyeh9 1:84d263c8932d 1 #include "Navigator.h"
pyeh9 1:84d263c8932d 2
charly 5:91b1bc68290b 3 Navigator::Navigator(Menu *root, TextLCD_Base *lcd) : activeMenu(root), lcd(lcd)
pyeh9 1:84d263c8932d 4 {
charly 5:91b1bc68290b 5
charly 5:91b1bc68290b 6 _cursorPos = 0;
charly 5:91b1bc68290b 7 _cursorLine = 1;
charly 5:91b1bc68290b 8 _display_rows = lcd->rows();
charly 10:2b6ddf53b05e 9 _display_cols = lcd->columns();
charly 10:2b6ddf53b05e 10
charly 8:fbaeab73fe1a 11 activeMenu->CurrentSelection = _cursorPos;
charly 5:91b1bc68290b 12
charly 10:2b6ddf53b05e 13 _wait_for_select = false;
charly 10:2b6ddf53b05e 14 _wait_for_yesno = false;
charly 10:2b6ddf53b05e 15
pyeh9 2:2654dc659298 16 printMenu();
pyeh9 2:2654dc659298 17 printCursor();
pyeh9 1:84d263c8932d 18 }
pyeh9 1:84d263c8932d 19
pyeh9 1:84d263c8932d 20 void Navigator::printMenu()
charly 5:91b1bc68290b 21 {
charly 5:91b1bc68290b 22 int index =0;
pyeh9 1:84d263c8932d 23 lcd->cls();
charly 5:91b1bc68290b 24
charly 5:91b1bc68290b 25 for(int row=0; row < _display_rows; row++) {
charly 5:91b1bc68290b 26
charly 5:91b1bc68290b 27 lcd->locate(0,row);
charly 5:91b1bc68290b 28 index = row + _cursorPos - (_cursorLine-1); // index into selection for this line
charly 5:91b1bc68290b 29 //should we display a menu on this line?
charly 5:91b1bc68290b 30 if (index <= activeMenu->selections.size()-1 ) {
charly 5:91b1bc68290b 31 lcd->printf(" %s", activeMenu->selections[index].selText);
pyeh9 1:84d263c8932d 32 }
pyeh9 1:84d263c8932d 33 }
pyeh9 1:84d263c8932d 34 }
pyeh9 1:84d263c8932d 35
pyeh9 1:84d263c8932d 36 void Navigator::printCursor()
charly 5:91b1bc68290b 37 {
charly 5:91b1bc68290b 38 if(activeMenu->selections[_cursorPos].childMenu == NULL) printf("No child menu\n");
charly 5:91b1bc68290b 39 else printf("child menu: %s\n", activeMenu->selections[_cursorPos].childMenu->menuID);
charly 5:91b1bc68290b 40
pyeh9 1:84d263c8932d 41 lcd->locate(0,0);
charly 5:91b1bc68290b 42 for (int row=0; row<_display_rows; row++) {
charly 5:91b1bc68290b 43 lcd->locate(0,row);
charly 5:91b1bc68290b 44 if (row == _cursorLine-1) {
charly 5:91b1bc68290b 45 //we are on Cursor-Line
charly 5:91b1bc68290b 46 //print cursor
charly 5:91b1bc68290b 47 lcd->putc('>');
charly 5:91b1bc68290b 48 } else {
charly 5:91b1bc68290b 49 //on other lines print a space
charly 5:91b1bc68290b 50 lcd->putc(' ');
charly 5:91b1bc68290b 51 }
pyeh9 1:84d263c8932d 52 }
pyeh9 1:84d263c8932d 53 }
pyeh9 1:84d263c8932d 54
pyeh9 1:84d263c8932d 55 void Navigator::poll()
pyeh9 1:84d263c8932d 56 {
charly 5:91b1bc68290b 57 // no longer needed
pyeh9 1:84d263c8932d 58 }
pyeh9 1:84d263c8932d 59
charly 10:2b6ddf53b05e 60 void Navigator::show_yes_no(bool yesorno)
charly 10:2b6ddf53b05e 61 {
charly 10:2b6ddf53b05e 62 // MenuItem is a Yes/no question?
charly 10:2b6ddf53b05e 63 // show the text in yesnodata and wait for a yes or no
charly 10:2b6ddf53b05e 64 lcd->cls();
charly 10:2b6ddf53b05e 65 //printf("YesNo: \n");
charly 10:2b6ddf53b05e 66 //printf("%s <Yes><No>",activeMenu->selections[_cursorPos].menu_parameter->text);
charly 10:2b6ddf53b05e 67 if (activeMenu->selections[_cursorPos].menu_parameter->text != NULL) {
charly 10:2b6ddf53b05e 68 if (yesorno) {
charly 10:2b6ddf53b05e 69 // Yes is default
charly 10:2b6ddf53b05e 70 lcd->printf("%s <Yes> No ",activeMenu->selections[_cursorPos].menu_parameter->text);
charly 10:2b6ddf53b05e 71 } else {
charly 10:2b6ddf53b05e 72 //No is default
charly 10:2b6ddf53b05e 73 lcd->printf("%s Yes <No>",activeMenu->selections[_cursorPos].menu_parameter->text);
charly 10:2b6ddf53b05e 74 }
charly 10:2b6ddf53b05e 75 activeMenu->selections[_cursorPos].menu_parameter->yes_no = yesorno;
charly 10:2b6ddf53b05e 76 }
charly 10:2b6ddf53b05e 77 }
charly 10:2b6ddf53b05e 78
charly 3:cfc36b42ae75 79 void Navigator::select()
charly 3:cfc36b42ae75 80 {
charly 8:fbaeab73fe1a 81 Menu *lastMenu;
charly 10:2b6ddf53b05e 82
charly 10:2b6ddf53b05e 83 // are we waiting for a Select()?
charly 10:2b6ddf53b05e 84 if (_wait_for_select) {
charly 10:2b6ddf53b05e 85 _wait_for_select = false;
charly 10:2b6ddf53b05e 86 // show the menu again
charly 10:2b6ddf53b05e 87 printMenu();
charly 10:2b6ddf53b05e 88 printCursor();
charly 10:2b6ddf53b05e 89
charly 10:2b6ddf53b05e 90 } else if (_wait_for_yesno) {
charly 10:2b6ddf53b05e 91 // user selected a value
charly 10:2b6ddf53b05e 92 _wait_for_yesno = false;
charly 10:2b6ddf53b05e 93 // show the menu again
charly 10:2b6ddf53b05e 94 printMenu();
charly 10:2b6ddf53b05e 95 printCursor();
charly 10:2b6ddf53b05e 96 } else if(activeMenu->selections[_cursorPos].itemMode == MenuItem::mode_yes_no) {
charly 10:2b6ddf53b05e 97 show_yes_no(activeMenu->selections[_cursorPos].menu_parameter->yes_no);
charly 10:2b6ddf53b05e 98 _wait_for_yesno = true;
charly 10:2b6ddf53b05e 99 } else {
charly 10:2b6ddf53b05e 100 // normal mneuItem
charly 10:2b6ddf53b05e 101 if(activeMenu->selections[_cursorPos].userAction != NULL) {
charly 10:2b6ddf53b05e 102 //execute function
charly 10:2b6ddf53b05e 103 (activeMenu->selections[_cursorPos].userAction)();
charly 10:2b6ddf53b05e 104 // refresh the Menu
charly 10:2b6ddf53b05e 105 //printMenu();
charly 10:2b6ddf53b05e 106 //printCursor();
charly 10:2b6ddf53b05e 107 }
charly 10:2b6ddf53b05e 108 //change the menu?
charly 10:2b6ddf53b05e 109 if(activeMenu->selections[_cursorPos].childMenu != NULL) {
charly 10:2b6ddf53b05e 110 lastMenu = activeMenu;
charly 10:2b6ddf53b05e 111
charly 10:2b6ddf53b05e 112 //change to childMenu
charly 10:2b6ddf53b05e 113 activeMenu = activeMenu->selections[_cursorPos].childMenu;
charly 10:2b6ddf53b05e 114
charly 10:2b6ddf53b05e 115 // if we went up one level, set CurrectSelection of SubMenu to zero, if we come back again
charly 10:2b6ddf53b05e 116 if (activeMenu->selections[activeMenu->CurrentSelection].childMenu == lastMenu) {
charly 10:2b6ddf53b05e 117 //reset menuposition of submenu to zero
charly 10:2b6ddf53b05e 118 lastMenu->CurrentSelection = 0;
charly 10:2b6ddf53b05e 119 }
charly 10:2b6ddf53b05e 120
charly 10:2b6ddf53b05e 121 // return to last position from that menu, if we went up on level
charly 10:2b6ddf53b05e 122 _cursorPos = activeMenu->CurrentSelection;
charly 10:2b6ddf53b05e 123
charly 10:2b6ddf53b05e 124 _cursorLine = 1;
charly 10:2b6ddf53b05e 125 printMenu();
charly 10:2b6ddf53b05e 126 printCursor();
charly 10:2b6ddf53b05e 127 }
charly 10:2b6ddf53b05e 128 // only accept select after showing this menu/user_action ?
charly 10:2b6ddf53b05e 129 if(activeMenu->selections[_cursorPos].itemMode == MenuItem::mode_wait_select) {
charly 10:2b6ddf53b05e 130 _wait_for_select = true;
charly 10:2b6ddf53b05e 131 }
charly 5:91b1bc68290b 132 }
charly 10:2b6ddf53b05e 133 }
charly 10:2b6ddf53b05e 134
charly 10:2b6ddf53b05e 135 void Navigator::moveUp()
charly 10:2b6ddf53b05e 136 {
charly 10:2b6ddf53b05e 137 if (_wait_for_yesno) {
charly 10:2b6ddf53b05e 138 // change Yes/no Selection
charly 10:2b6ddf53b05e 139 show_yes_no( ! activeMenu->selections[_cursorPos].menu_parameter->yes_no);
charly 10:2b6ddf53b05e 140 }else
charly 10:2b6ddf53b05e 141 // only if we don't wait for a select()
charly 10:2b6ddf53b05e 142 if (! _wait_for_select) {
charly 10:2b6ddf53b05e 143 // Show the MenuItems
charly 10:2b6ddf53b05e 144 // allready on TOP of Display?
charly 10:2b6ddf53b05e 145 if(_cursorLine > 1) {
charly 10:2b6ddf53b05e 146 // scroll up cursor one line
charly 10:2b6ddf53b05e 147 _cursorLine--;
charly 10:2b6ddf53b05e 148 }
charly 10:2b6ddf53b05e 149
charly 10:2b6ddf53b05e 150 if(_cursorPos > 0) {
charly 10:2b6ddf53b05e 151 //scroll up one item
charly 10:2b6ddf53b05e 152 _cursorPos--;
charly 10:2b6ddf53b05e 153 activeMenu->CurrentSelection = _cursorPos;
charly 10:2b6ddf53b05e 154
charly 10:2b6ddf53b05e 155 }
charly 5:91b1bc68290b 156 printMenu();
charly 5:91b1bc68290b 157 printCursor();
charly 5:91b1bc68290b 158 }
charly 3:cfc36b42ae75 159 }
pyeh9 1:84d263c8932d 160
pyeh9 1:84d263c8932d 161 void Navigator::moveDown()
pyeh9 1:84d263c8932d 162 {
charly 10:2b6ddf53b05e 163 if (_wait_for_yesno) {
charly 10:2b6ddf53b05e 164 // change Yes/no Selection
charly 10:2b6ddf53b05e 165 show_yes_no( ! activeMenu->selections[_cursorPos].menu_parameter->yes_no);
charly 10:2b6ddf53b05e 166 }else
charly 10:2b6ddf53b05e 167 // only if we don't wait for a select()
charly 10:2b6ddf53b05e 168 if (! _wait_for_select) {
charly 10:2b6ddf53b05e 169 //Show the menuItem
charly 10:2b6ddf53b05e 170 // allready on last line of display?
charly 10:2b6ddf53b05e 171 if (_cursorPos == activeMenu->selections.size()-1) {
charly 10:2b6ddf53b05e 172 //stay on this line
charly 5:91b1bc68290b 173 } else {
charly 10:2b6ddf53b05e 174 // move down
charly 10:2b6ddf53b05e 175 if(_cursorLine < _display_rows) {
charly 10:2b6ddf53b05e 176 // Only move down cursor
charly 10:2b6ddf53b05e 177 _cursorLine++;
charly 10:2b6ddf53b05e 178 _cursorPos++;
charly 10:2b6ddf53b05e 179 } else {
charly 10:2b6ddf53b05e 180 // on last Display-Line scroll down Menu
charly 10:2b6ddf53b05e 181 _cursorPos++;
charly 10:2b6ddf53b05e 182 }
charly 10:2b6ddf53b05e 183 // save currentPosition in Menu
charly 10:2b6ddf53b05e 184 activeMenu->CurrentSelection = _cursorPos;
charly 5:91b1bc68290b 185
charly 10:2b6ddf53b05e 186 }
charly 5:91b1bc68290b 187
charly 10:2b6ddf53b05e 188 printMenu();
charly 10:2b6ddf53b05e 189 printCursor();
charly 10:2b6ddf53b05e 190 }
charly 10:2b6ddf53b05e 191 }