Karl Zweimüller / Menu

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Fork of Menu by Peihsun Yeh

Navigator.cpp@5:91b1bc68290b, 2015-01-02 (annotated)

Committer:
charly
Date:
Fri Jan 02 15:41:09 2015 +0000
Revision:
5:91b1bc68290b
Parent:
4:67097127da6c
Child:
6:819049708d51
Bug fixes. ; Should work for displays with more than 2 rows.

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 5:91b1bc68290b 9
pyeh9 2:2654dc659298 10 printMenu();
pyeh9 2:2654dc659298 11 printCursor();
pyeh9 1:84d263c8932d 12 }
pyeh9 1:84d263c8932d 13
pyeh9 1:84d263c8932d 14 void Navigator::printMenu()
charly 5:91b1bc68290b 15 {
charly 5:91b1bc68290b 16 int index =0;
pyeh9 1:84d263c8932d 17 lcd->cls();
charly 5:91b1bc68290b 18
charly 5:91b1bc68290b 19 for(int row=0; row < _display_rows; row++) {
charly 5:91b1bc68290b 20
charly 5:91b1bc68290b 21 lcd->locate(0,row);
charly 5:91b1bc68290b 22 index = row + _cursorPos - (_cursorLine-1); // index into selection for this line
charly 5:91b1bc68290b 23 //should we display a menu on this line?
charly 5:91b1bc68290b 24 if (index <= activeMenu->selections.size()-1 ) {
charly 5:91b1bc68290b 25 lcd->printf(" %s", activeMenu->selections[index].selText);
pyeh9 1:84d263c8932d 26 }
pyeh9 1:84d263c8932d 27 }
pyeh9 1:84d263c8932d 28 }
pyeh9 1:84d263c8932d 29
pyeh9 1:84d263c8932d 30 void Navigator::printCursor()
charly 5:91b1bc68290b 31 {
charly 5:91b1bc68290b 32 if(activeMenu->selections[_cursorPos].childMenu == NULL) printf("No child menu\n");
charly 5:91b1bc68290b 33 else printf("child menu: %s\n", activeMenu->selections[_cursorPos].childMenu->menuID);
charly 5:91b1bc68290b 34
pyeh9 1:84d263c8932d 35 lcd->locate(0,0);
charly 5:91b1bc68290b 36 for (int row=0; row<_display_rows; row++) {
charly 5:91b1bc68290b 37 lcd->locate(0,row);
charly 5:91b1bc68290b 38 if (row == _cursorLine-1) {
charly 5:91b1bc68290b 39 //we are on Cursor-Line
charly 5:91b1bc68290b 40 //print cursor
charly 5:91b1bc68290b 41 lcd->putc('>');
charly 5:91b1bc68290b 42 } else {
charly 5:91b1bc68290b 43 //on other lines print a space
charly 5:91b1bc68290b 44 lcd->putc(' ');
charly 5:91b1bc68290b 45 }
pyeh9 1:84d263c8932d 46 }
pyeh9 1:84d263c8932d 47 }
pyeh9 1:84d263c8932d 48
pyeh9 1:84d263c8932d 49 void Navigator::poll()
pyeh9 1:84d263c8932d 50 {
charly 5:91b1bc68290b 51 // no longer needed
pyeh9 1:84d263c8932d 52 }
pyeh9 1:84d263c8932d 53
charly 3:cfc36b42ae75 54 void Navigator::select()
charly 3:cfc36b42ae75 55 {
charly 5:91b1bc68290b 56 if(activeMenu->selections[_cursorPos].fun != NULL) {
charly 5:91b1bc68290b 57 //execute function
charly 5:91b1bc68290b 58 (activeMenu->selections[_cursorPos].fun)();
charly 5:91b1bc68290b 59 }
charly 5:91b1bc68290b 60 if(activeMenu->selections[_cursorPos].childMenu != NULL) {
charly 5:91b1bc68290b 61 activeMenu = activeMenu->selections[_cursorPos].childMenu;
charly 5:91b1bc68290b 62 _cursorPos = 0;
charly 5:91b1bc68290b 63 _cursorLine = 1;
charly 5:91b1bc68290b 64 printMenu();
charly 5:91b1bc68290b 65 printCursor();
charly 5:91b1bc68290b 66 }
charly 3:cfc36b42ae75 67 }
pyeh9 1:84d263c8932d 68 void Navigator::moveUp()
pyeh9 1:84d263c8932d 69 {
charly 5:91b1bc68290b 70 // allready on TOP of Display?
charly 5:91b1bc68290b 71 if(_cursorLine > 1) {
charly 5:91b1bc68290b 72 // scroll up cursor one line
charly 5:91b1bc68290b 73 _cursorLine--;
pyeh9 1:84d263c8932d 74 }
charly 5:91b1bc68290b 75
charly 5:91b1bc68290b 76 if(_cursorPos > 0) {
charly 5:91b1bc68290b 77 //scroll up one item
charly 5:91b1bc68290b 78 _cursorPos--;
charly 5:91b1bc68290b 79
pyeh9 1:84d263c8932d 80 }
charly 5:91b1bc68290b 81 printMenu();
pyeh9 1:84d263c8932d 82 printCursor();
pyeh9 1:84d263c8932d 83 }
pyeh9 1:84d263c8932d 84
pyeh9 1:84d263c8932d 85 void Navigator::moveDown()
pyeh9 1:84d263c8932d 86 {
charly 5:91b1bc68290b 87
charly 5:91b1bc68290b 88 // allready on last line of display?
charly 5:91b1bc68290b 89 if (_cursorPos == activeMenu->selections.size()-1) {
charly 5:91b1bc68290b 90 //stay on this line
charly 5:91b1bc68290b 91 } else {
charly 5:91b1bc68290b 92 // move down
charly 5:91b1bc68290b 93 if(_cursorLine < _display_rows) {
charly 5:91b1bc68290b 94 // Only move down cursor
charly 5:91b1bc68290b 95 _cursorLine++;
charly 5:91b1bc68290b 96 _cursorPos++;
charly 5:91b1bc68290b 97 } else {
charly 5:91b1bc68290b 98 // on last Display-Line scroll down Menu
charly 5:91b1bc68290b 99 _cursorPos++;
charly 5:91b1bc68290b 100 }
charly 5:91b1bc68290b 101
pyeh9 1:84d263c8932d 102 }
charly 5:91b1bc68290b 103
charly 5:91b1bc68290b 104 printMenu();
pyeh9 1:84d263c8932d 105 printCursor();
pyeh9 1:84d263c8932d 106 }