exposurses

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Overview
Comment:Make exposure menu functional

- Make it function so that user is constrained to exposure menu
initially and must select value there.
- Once selected, the ISO menu becomes active and user must select value
there
- Finally make both shutter and aperture menus actives (switch between
them with left/right arrow keys). Whichever is selected, the other
will be calculated.

This is not very pretty:

- I don't like having both the selection_counter and menu_counter. Seems
almost redundant. Made sense before I constrained selections and
stepped through the menu's etc (and therefore you could re-select),
but now seems annoying to have to keep it only for how last two menus
work.
- I don't like the repetitive menu creation stuff. That should be DRY-ed
up.

Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | origin/master | trunk
Files: files | file ages | folders
SHA3-256: 580afe6ab4978ab68c4f6a0268daf0e932254fb21b7b08f97e2823cd16a7f24f
User & Date: base@atomicules.co.uk 2013-09-10 08:51:12
Context
2013-09-18
10:33
For ref: Try wrapping menu and window creation in single function

Got this so it drew everything ok, but segfaults as soon as a key is
pressed. I obviously don't understand pointers, etc properly yet. As
although it's drawn the menus it hasn't "attached" them the the
objects/pointers I was expecting. check-in: a88f7285c1 user: base@atomicules.co.uk tags: origin/master, trunk

2013-09-11
21:41
For ref: Wrap menu and window creation in function check-in: 284f5d1a81 user: base@atomicules.co.uk tags: trunk, temp2
2013-09-10
13:40
For ref check-in: de620ef542 user: base@atomicules.co.uk tags: trunk, refs/stash
08:51
Make exposure menu functional

- Make it function so that user is constrained to exposure menu
initially and must select value there.
- Once selected, the ISO menu becomes active and user must select value
there
- Finally make both shutter and aperture menus actives (switch between
them with left/right arrow keys). Whichever is selected, the other
will be calculated.

This is not very pretty:

- I don't like having both the selection_counter and menu_counter. Seems
almost redundant. Made sense before I constrained selections and
stepped through the menu's etc (and therefore you could re-select),
but now seems annoying to have to keep it only for how last two menus
work.
- I don't like the repetitive menu creation stuff. That should be DRY-ed
up. check-in: 580afe6ab4 user: base@atomicules.co.uk tags: origin/master, trunk

2013-09-03
12:38
Add in EV menu, doesn't function yet though

- Add in free memory bits, also missed some for the other menus check-in: 6c315c3200 user: base@atomicules.co.uk tags: origin/master, trunk

Changes
Hide Diffs Unified Diffs Ignore Whitespace Patch

Changes to exposurses.c. 

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WINDOW *iso_win;
WINDOW *shutter_win;
WINDOW *aperture_win;

void selection(char *name);
void print_in_middle(WINDOW *win, int starty, int startx, int width, char *string, chtype color);
int exposure(int iso);
int selection_counter;
double shutter(int exposure, double aperture);
double aperture(int exposure, double shutter);
int nearest_match(double x, int menu);
double fraction_to_double(char *fraction);
/* No one will ever need more than 9 bytes! */
char exposure_sel[9] = "";
char iso_sel[9] = "";
char shutter_sel[9] = "";
char aperture_sel[9] = "";

int menu_counter = 1;

int main() {
	int c;
	MENU **menu;
	WINDOW **win;
	int i;
	int n_exposure;
	int n_iso;
	int n_shutter;
	int n_aperture;
	int menu_sel_last;
	selection_counter = 0;

	/* Initialize curses */
	initscr();
	start_color();
	cbreak();
	noecho();
	keypad(stdscr, TRUE);
................................................................................
	post_menu(aperture_menu);
	wrefresh(exposure_win);
	wrefresh(iso_win);
	wrefresh(shutter_win);
	wrefresh(aperture_win);

	attron(COLOR_PAIR(2));

	mvprintw(LINES - 2, 0, "Select ISO and then one of Shutter/Aperture to calculate other of Shutter/Aperture");
	mvprintw(LINES - 1, 0, "Arrow keys to navigate, Enter to select, Q to exit");
	attroff(COLOR_PAIR(2));
	refresh();

	/* set default menu */
	menu = &iso_menu;
	win = &iso_win;

	while((c = getch()) != 81) { /* 81 is Q */
		switch(c) {
			case KEY_LEFT:
				if (menu_counter > 1)
					menu_counter -= 1;
				switch(menu_counter) {
					case 1:
						menu = &iso_menu;
						win = &iso_win;
						break;
					case 2:
						menu = &shutter_menu;
						win = &shutter_win;
						break;
					case 3:
						menu = &aperture_menu;
						win = &aperture_win;
						break;
				}
				break;
			case KEY_RIGHT:
				if (menu_counter < 3)
					menu_counter += 1;
				switch(menu_counter) {
					case 1:
						menu = &iso_menu;
						win = &iso_win;
						break;
					case 2:
						menu = &shutter_menu;
						win = &shutter_win;
						break;
					case 3:
						menu = &aperture_menu;
						win = &aperture_win;
						break;
				}
				break;
			case KEY_DOWN:
				menu_driver(*menu, REQ_DOWN_ITEM);
				break;
			case KEY_UP:
				menu_driver(*menu, REQ_UP_ITEM);
................................................................................
				ITEM *cur;
				void (*p)(char *);

				cur = current_item(*menu);
				p = item_userptr(cur);
				/* Learning notes - Don't understand this bit */
				p((char *)item_name(cur));

				if (selection_counter == 0) {
					 menu_sel_last = menu_counter;
					 selection_counter += 1;







				}
				if (menu_counter != menu_sel_last)


					 selection_counter += 1;
				if (selection_counter == 2) { 
					/* calculate the other menu */
					/* how to get missing menu? */
					if (strcmp("", iso_sel) == 0) {
						/* Test searching for item in menu */
						set_menu_pattern(iso_menu, "200");
						menu_driver(iso_menu, REQ_DOWN_ITEM);
						menu_driver(iso_menu, REQ_UP_ITEM);



						wrefresh(iso_win);


					}


					if (strcmp("", shutter_sel) == 0) {
						char aperture_sel_[4] = "";
						strncpy(aperture_sel_, aperture_sel+2, 3);
						/* Using menu_driver to go up/down to force refresh and correct highlighting */
						menu_driver(shutter_menu, REQ_SCR_UPAGE);
						menu_driver(shutter_menu, REQ_SCR_DPAGE);
						/* There is probably a nicer way to format the below */
						set_menu_pattern(
							shutter_menu,
							shutter_array[nearest_match(
								shutter(exposure(atoi(iso_sel)), strtod(aperture_sel_, NULL)),
								2
							)]
						);
						menu_driver(shutter_menu, REQ_DOWN_ITEM);
						menu_driver(shutter_menu, REQ_UP_ITEM);
						wrefresh(shutter_win);
					}
					if (strcmp("", aperture_sel) == 0) {
						menu_driver(aperture_menu, REQ_SCR_UPAGE);
						menu_driver(aperture_menu, REQ_SCR_DPAGE);
						set_menu_pattern(
							aperture_menu,
							aperture_array[nearest_match(
								aperture(exposure(atoi(iso_sel)), fraction_to_double(shutter_sel)),
								3
							)]
						);
						menu_driver(aperture_menu, REQ_DOWN_ITEM);
						menu_driver(aperture_menu, REQ_UP_ITEM);
						wrefresh(aperture_win);
					}
					/* clear the selections for next time */
					selection_counter = 0;
					strcpy(iso_sel, "");
					strcpy(shutter_sel, "");
					strcpy(aperture_sel, "");
					break;









				}
				break;
			}


		}
		wrefresh(*win);
	}	
	/* Unpost and free all the memory taken up */
	unpost_menu(expsoure_menu);
	unpost_menu(iso_menu);
	unpost_menu(shutter_menu);
	unpost_menu(aperture_menu);
	free_menu(exposure_menu);
	free_menu(iso_menu);
	free_menu(shutter_menu);
	free_menu(aperture_menu);
................................................................................
	wattroff(win, color);
	refresh();
}

void selection(char *name) {
	switch(menu_counter) {
		case 1:



			strcpy(iso_sel, name);
			break;
		case 2:
			strcpy(shutter_sel, name);
			break;
		case 3:
			strcpy(aperture_sel, name);
			break;
	}
}

int exposure (int iso) {
	int ev100;
................................................................................
		/*then split*/
		strncpy(denominator, fraction+2, 5);
		fraction_as_db = 1 / strtod(denominator, NULL);
	}
	else {
		fraction_as_db = strtod(fraction, NULL);
	}
return fraction_as_db;
}

/* Debug lines
 * sprintf(temp, "%f", x);
 * mvprintw(LINES - 4, 0, temp);
 * refresh();*/








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WINDOW *iso_win;
WINDOW *shutter_win;
WINDOW *aperture_win;

void selection(char *name);
void print_in_middle(WINDOW *win, int starty, int startx, int width, char *string, chtype color);
int exposure(int iso);

double shutter(int exposure, double aperture);
double aperture(int exposure, double shutter);
int nearest_match(double x, int menu);
double fraction_to_double(char *fraction);
/* No one will ever need more than 9 bytes! */
char exposure_sel[9] = "";
char iso_sel[9] = "";
char shutter_sel[9] = "";
char aperture_sel[9] = "";
int selection_counter = 1;
int menu_counter = 1;

int main() {
	int c;
	MENU **menu;
	WINDOW **win;
	int i;
	int n_exposure;
	int n_iso;
	int n_shutter;
	int n_aperture;



	/* Initialize curses */
	initscr();
	start_color();
	cbreak();
	noecho();
	keypad(stdscr, TRUE);
................................................................................
	post_menu(aperture_menu);
	wrefresh(exposure_win);
	wrefresh(iso_win);
	wrefresh(shutter_win);
	wrefresh(aperture_win);

	attron(COLOR_PAIR(2));
	mvprintw(LINES - 2, 0, "Select EV");
	/*mvprintw(LINES - 2, 0, "Select ISO and then one of Shutter/Aperture to calculate other of Shutter/Aperture");*/
	mvprintw(LINES - 1, 0, "Arrow keys to navigate, Enter to select, Q to exit");
	attroff(COLOR_PAIR(2));
	refresh();

	/* set default menu */
	menu = &exposure_menu;
	win = &exposure_win;

	while((c = getch()) != 81) { /* 81 is Q */
		switch(c) {
			case KEY_LEFT:
				if (selection_counter > 2) {
					menu_counter = 3;






					menu = &shutter_menu;
					win = &shutter_win;





				}
				break;
			case KEY_RIGHT:
				if (selection_counter > 2) {
					menu_counter = 4;










					menu = &aperture_menu;
					win = &aperture_win;

				}
				break;
			case KEY_DOWN:
				menu_driver(*menu, REQ_DOWN_ITEM);
				break;
			case KEY_UP:
				menu_driver(*menu, REQ_UP_ITEM);
................................................................................
				ITEM *cur;
				void (*p)(char *);

				cur = current_item(*menu);
				p = item_userptr(cur);
				/* Learning notes - Don't understand this bit */
				p((char *)item_name(cur));
				
				switch (selection_counter) {
					case 1: { /* Exposure selected */
						selection_counter += 1;
						menu_counter += 1;
						move(LINES - 2, 0);
						clrtoeol();
						mvprintw(LINES - 2, 0, "Select ISO");
						refresh();
						menu = &iso_menu;
						win = &iso_win;
					}

					break;
					case 2: { /* ISO Selected */
						selection_counter += 1;
						menu_counter += 1;







						move(LINES - 2, 0);
						clrtoeol();
						mvprintw(LINES - 2, 0, "Select Shutter or Aperture");
						refresh();
						menu = &shutter_menu;
						win = &shutter_win;
					}
					break;
					case 3: { /* Shutter or Aperture selected */
						if (strcmp("", shutter_sel) == 0) {
							char aperture_sel_[4] = "";
							strncpy(aperture_sel_, aperture_sel+2, 3);
							/* Using menu_driver to go up/down to force refresh and correct highlighting */
							menu_driver(shutter_menu, REQ_SCR_UPAGE);
							menu_driver(shutter_menu, REQ_SCR_DPAGE);
							/* There is probably a nicer way to format the below */
							set_menu_pattern(
								shutter_menu,
								shutter_array[nearest_match(
									shutter(exposure(atoi(iso_sel)), strtod(aperture_sel_, NULL)),
									2
								)]
							);
							menu_driver(shutter_menu, REQ_DOWN_ITEM);
							menu_driver(shutter_menu, REQ_UP_ITEM);
							wrefresh(shutter_win);
						}
						if (strcmp("", aperture_sel) == 0) {
							menu_driver(aperture_menu, REQ_SCR_UPAGE);
							menu_driver(aperture_menu, REQ_SCR_DPAGE);
							set_menu_pattern(
								aperture_menu,
								aperture_array[nearest_match(
									aperture(exposure(atoi(iso_sel)), fraction_to_double(shutter_sel)),
									3
								)]
							);
							menu_driver(aperture_menu, REQ_DOWN_ITEM);
							menu_driver(aperture_menu, REQ_UP_ITEM);
							wrefresh(aperture_win);
						}
						/* clear the selections for next time */

						strcpy(iso_sel, "");
						strcpy(shutter_sel, "");
						strcpy(aperture_sel, "");

						/* And set defaults back to start */
						selection_counter = 1;
						menu_counter = 1;
						menu = &exposure_menu;
						win = &exposure_win;
						move(LINES - 2, 0);
						clrtoeol();
						mvprintw(LINES - 2, 0, "Select EV");
						refresh();
					}
					break;
				}
			}
			break;
		}
		wrefresh(*win);
	}	
	/* Unpost and free all the memory taken up */
	unpost_menu(exposure_menu);
	unpost_menu(iso_menu);
	unpost_menu(shutter_menu);
	unpost_menu(aperture_menu);
	free_menu(exposure_menu);
	free_menu(iso_menu);
	free_menu(shutter_menu);
	free_menu(aperture_menu);
................................................................................
	wattroff(win, color);
	refresh();
}

void selection(char *name) {
	switch(menu_counter) {
		case 1:
			strcpy(exposure_sel, name);
			break;
		case 2:
			strcpy(iso_sel, name);
			break;
		case 3:
			strcpy(shutter_sel, name);
			break;
		case 4:
			strcpy(aperture_sel, name);
			break;
	}
}

int exposure (int iso) {
	int ev100;
................................................................................
		/*then split*/
		strncpy(denominator, fraction+2, 5);
		fraction_as_db = 1 / strtod(denominator, NULL);
	}
	else {
		fraction_as_db = strtod(fraction, NULL);
	}
	return fraction_as_db;
}

/* Debug lines
 * sprintf(temp, "%f", x);
 * mvprintw(LINES - 4, 0, temp);
 * refresh();*/

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