exposurses

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Changes In Branch temp Excluding Merge-Ins

This is equivalent to a diff from 095cfb3932 to cf92beadf9

2013-09-17
22:43
Split out ITEM creation into separate func so can clean on exit

As otherwise can't free up the memory, etc. This makes clean up work

Yay, pretty much done. Leaf check-in: cf92beadf9 user: base@atomicules.co.uk tags: temp, trunk

2013-09-15
21:25
Ignore selection of OVER/UNDER check-in: d4b0749e89 user: base@atomicules.co.uk tags: temp, trunk
2013-09-12
12:02
For ref: That should have always been a pointer

Although this version still no worky Leaf check-in: b786f69eac user: base@atomicules.co.uk tags: temp2, trunk

2013-09-11
21:46
For ref: Try separate win and menu functions check-in: 878d5d8315 user: base@atomicules.co.uk tags: temp, trunk
21:44
Add debug options to Makefile check-in: 095cfb3932 user: base@atomicules.co.uk tags: temp2, trunk
21:41
For ref: Wrap menu and window creation in function check-in: 284f5d1a81 user: base@atomicules.co.uk tags: temp2, trunk

Changes to exposurses.c.

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	"10",		
	"11",		
	"12",		
	"13",		
	"14",		
	"15",		
	"16",		
	NULL
};

char *iso_array[] = {
	"50",
	"100",
	"200",
	"400",
	"800",
	"1600",
	"3200",
	NULL
};

char *shutter_array[] = {
	"OVER",
	"1/1000",
	"1/500",
	"1/250",
	"1/125",
	"1/60",
	"1/30",
	"1/15",
	"1/8",
	"1/4",
	"1/2",
	"1",
	NULL
	"UNDER",
};

char *aperture_array[] = {
	"UNDER",
	"f/1.4",
	"f/2",
	"f/2.8",
	"f/4",
	"f/5.6",
	"f/8",
	"f/11",
	"f/16",
	NULL
	"OVER",
};

ITEM **exposure_items;
ITEM **iso_items;
ITEM **shutter_items;
ITEM **aperture_items;
MENU *exposure_menu;
MENU *iso_menu;
MENU *shutter_menu;
MENU *aperture_menu;
WINDOW *exposure_win;
WINDOW *iso_win;
WINDOW *shutter_win;
WINDOW *aperture_win;

void selection(char *name);
void add_menu(char **array, ITEM **items, MENU *men, WINDOW *win, int n, int xpos, char *title);
void remove_menu(ITEM **items, MENU *men, int n);
void print_in_middle(WINDOW *win, int starty, int startx, int width, char *string, chtype color);
MENU *add_menu(ITEM **items);
WINDOW *add_window(int xpos, char *title);
ITEM **add_item(char **array, int n);
int exposure(int iso);
double shutter(int exposure, double aperture);
double aperture(int exposure, double shutter);
int nearest_match(double x, int menu);
int nearest_match(double x, int menu, int n_array);
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;
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	/* Create items */
	/* Can't really avoid finding array sizes here */
	n_exposure = ARRAY_SIZE(exposure_array);
	n_iso = ARRAY_SIZE(iso_array);
	n_shutter = ARRAY_SIZE(shutter_array);
	n_aperture = ARRAY_SIZE(aperture_array);
	/* http://stackoverflow.com/a/2620158/208793 */
	exposure_items = add_item(exposure_array, n_exposure);
	iso_items = add_item(iso_array, n_iso);
	aperture_items = add_item(aperture_array, n_aperture);
	shutter_items = add_item(shutter_array, n_shutter);
	exposure_menu = add_menu(exposure_items);
	iso_menu = add_menu(iso_items);
	shutter_menu = add_menu(shutter_items);
	aperture_menu = add_menu(aperture_items);
	exposure_win = add_window(4, "EV");
	iso_win = add_window(45, "ISO");
	shutter_win = add_window(86, "Shutter");
	aperture_win = add_window(127, "Aperture");
	/* Don't know how to avoid the repition below */
	add_menu(exposure_array, exposure_items, exposure_menu, exposure_win, n_exposure, 4, "EV");
	add_menu(iso_array, iso_items, iso_menu, iso_win, n_iso, 45, "ISO");
	add_menu(shutter_array, shutter_items, shutter_menu, shutter_win, n_shutter, 86, "Shutter");
	add_menu(aperture_array, aperture_items, aperture_menu, aperture_win, n_aperture, 127, "Aperture");

	set_menu_win(exposure_menu, exposure_win);
	set_menu_win(iso_menu, iso_win);
	set_menu_win(shutter_menu, shutter_win);
	set_menu_win(aperture_menu, aperture_win);
	set_menu_sub(exposure_menu, derwin(exposure_win, 6, 38, 3, 1));
	set_menu_sub(iso_menu, derwin(iso_win, 6, 38, 3, 1));
	set_menu_sub(shutter_menu, derwin(shutter_win, 6, 38, 3, 1));
	set_menu_sub(aperture_menu, derwin(aperture_win, 6, 38, 3, 1));
	post_menu(exposure_menu);
	post_menu(iso_menu);
	post_menu(shutter_menu);
	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();
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				void (*p)(char *);

				cur = current_item(*menu);
				p = item_userptr(cur);
				/* Learning notes - Don't understand this bit */
				/* Is this a function pointer? */
				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)),
				/* need to igore over/under if selected, probably easier than try to prevent selection */
				if (!((strcmp("OVER", shutter_sel) == 0)
						|| (strcmp("UNDER", shutter_sel) == 0) 
						|| (strcmp("OVER", aperture_sel) == 0) 
						|| (strcmp("UNDER", aperture_sel) == 0))) {
					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,
										n_shutter
									)]
								);
								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;
				}
			}
										4,
										n_aperture
									)]
								);
								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;
					}
				}
				/* If over/under need to clear selection so know which is blank
				 * when a proper selection is made */
				if ((strcmp("OVER", shutter_sel) == 0) || (strcmp("UNDER", shutter_sel) == 0)) {
					strcpy(shutter_sel, "");
				}
				if ((strcmp("OVER", aperture_sel) == 0) || (strcmp("UNDER", aperture_sel) == 0)) {
					strcpy(aperture_sel, "");
				}
			}
			break;
		}
		wrefresh(win);
		wrefresh(*win);
	}	
	/* Unpost and free all the memory taken up */
	remove_menu(exposure_items, exposure_menu, n_exposure);
	remove_menu(iso_items, iso_menu, n_iso);
	remove_menu(shutter_items, shutter_menu, n_shutter);
	remove_menu(aperture_items, aperture_menu, n_aperture);
	endwin();
}

void add_menu(char **array, ITEM **items, MENU *men, WINDOW *win, int n, int xpos, char *title) {
ITEM **add_item(char **array, int n) {
	int i;
	ITEM **local_items;

	items = (ITEM **)calloc(n, sizeof(ITEM *));
	local_items = (ITEM **)calloc(n, sizeof(ITEM *));
	for(i = 0; i<n; ++i) {
		items[i] = new_item(array[i], array[i]);
		set_item_userptr(items[i], selection);
		local_items[i] = new_item(array[i], array[i]);
		set_item_userptr(local_items[i], selection);
	}
	men = new_menu((ITEM **)items);
	win = newwin(10, 40, 4, xpos);
	return local_items;
}

	keypad(win, TRUE);
	set_menu_win(men, win);
	set_menu_sub(men, derwin(win, 6, 38, 3, 1));
	set_menu_format(men, 5, 1);
	set_menu_mark(men, " * ");
	box(win, 0, 0);
	print_in_middle(win, 1, 0, 40, title, COLOR_PAIR(1));
	mvwaddch(win, 2, 0, ACS_LTEE);
	mvwhline(win, 2, 1, ACS_HLINE, 38);
	mvwaddch(win, 2, 39, ACS_RTEE);
MENU *add_menu(ITEM **items) {
	MENU *local_menu;

	local_menu = new_menu((ITEM **)items);
	set_menu_format(local_menu, 5, 1);
	set_menu_mark(local_menu, " * ");
	return local_menu;
}

WINDOW *add_window(int xpos, char *title) {
	WINDOW *local_win;

	local_win = newwin(10, 40, 4, xpos);
	keypad(local_win, TRUE);
	box(local_win, 0, 0);
	print_in_middle(local_win, 1, 0, 40, title, COLOR_PAIR(1));
	mvwaddch(local_win, 2, 0, ACS_LTEE);
	mvwhline(local_win, 2, 1, ACS_HLINE, 38);
	mvwaddch(local_win, 2, 39, ACS_RTEE);
	post_menu(men);
	wrefresh(win);
	return local_win;
}

void remove_menu(ITEM **items, MENU *men, int n) {
	int i;

	unpost_menu(men);
	free_menu(men);
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}

double aperture (int exposure, double shutter) {
	/* EV = log2 (N^2/t) */
	return sqrt(pow(2, exposure) * shutter);
}

int nearest_match (double x, int menu) {
int nearest_match (double x, int menu, int n_array) {
	/* Need to search array for closest match */
	int n;
	int diff_idx = 0;
	int diff_idx = 1;
	char array_value_str[9];
	double array_value_db;
	double diff;

	/* Need a starting value for difference */
	switch(menu) {
		case 1:
		case 3:
			array_value_db = strtod(iso_array[0], NULL);
			break;
		case 2:
			array_value_db = fraction_to_double(shutter_array[0]);
			array_value_db = fraction_to_double(shutter_array[1]);
			break;
		case 3:
			strncpy(array_value_str, aperture_array[0]+2, 4);
		case 4:
			strncpy(array_value_str, aperture_array[1]+2, 4);
			array_value_db = strtod(array_value_str, NULL);
			break;
	}
	diff = fabs(array_value_db - x);
	/* lots of repetition here but pointers to arrays seem to be a bad thing */
	/* Could do from n = 3 (2 above) until != under/over
	 * but also need to do something like if diff is more than twice max/min then under/over */
	switch(menu) {
		case 1:
			for ( n = 1; iso_array[n] != NULL; ++n ) {
		case 3:
			for ( n = 2; n < n_array-1; ++n ) {
				array_value_db = strtod(iso_array[n], NULL);
				if (fabs(array_value_db - x) < diff) { 
					diff_idx = n;
					diff = fabs(array_value_db - x);
				}
			}
			break;
		case 2:
			for ( n = 1; shutter_array[n] != NULL; ++n ) {
				array_value_db = fraction_to_double(shutter_array[n]);
				if (fabs(array_value_db - x) < diff) {
					diff_idx = n;
					diff = fabs(array_value_db - x);
				}
			}
			/* Check if at extremities and then if under/over exposed */
			if (diff_idx == 1) {
				if (diff >= fraction_to_double(shutter_array[1])/2) { /* diff is greater than diff of next one down minus max/min */
					diff_idx = 0;
				}
			}
			if (diff_idx == n_array-2) {
				if (diff >= fraction_to_double(shutter_array[n_array-2])*2) {
					diff_idx = n_array-1;	
				}
			}
			break;
		case 3:
			for ( n = 1; aperture_array[n] != NULL; ++n ) {
		case 4:
			for ( n = 2; n < n_array-1; ++n ) {
				strncpy(array_value_str, aperture_array[n]+2, 4);
				array_value_db = strtod(array_value_str, NULL);
				if (fabs(array_value_db - x) < diff) { 
					diff_idx = n;
					diff = fabs(array_value_db - x);
				}
			}
			/* Apertures similarly. Although progression is fiddlier.*/
			if (diff_idx == 1) {
				strncpy(array_value_str, aperture_array[1]+2, 4);
				array_value_db = strtod(array_value_str, NULL);
				if (diff >= array_value_db/sqrt(2.0)) { /* diff is greater than diff of next one down minus max/min */
					diff_idx = 0;
				}
			}
			if (diff_idx == n_array-2) {
				strncpy(array_value_str, aperture_array[n_array-2]+2, 4);
				array_value_db = strtod(array_value_str, NULL);
				if (diff >= array_value_db*sqrt(2.0)) {
					diff_idx = n_array-1;	
				}
			}

			break;
	}
	return diff_idx;
}

double fraction_to_double(char *fraction) {
	double fraction_as_db;
︙

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