kske/menu-lib
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Changed Method Names

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Simon 2020-01-16 08:06:57 +01:00
parent 72046f2e0c
commit 14b4677e98
2 changed files with 71 additions and 59 deletions
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126
menu.c
View File

@ -1,5 +1,6 @@
#include "pch.h"
#include "framework.h"
#include "menu.h"
const struct MenuBorder DEFAULT = {
@ -18,6 +19,66 @@ const struct MenuBorder SOLID = {
186, 205, 201, 187, 200, 188, '[', ']'
};
void print_content(const int itemc, const struct MenuItem itemv[], const char title[], const struct MenuBorder* border);
void show_menu(const struct MenuPage* pages, const size_t page_count, const bool infinite_loop)
{
unsigned int page_index = 0;
bool action_performed, loop, page_changed = true;
char page_key, itemKey;
int i;
do {
do {
print_content(pages[page_index].item_count, pages[page_index].items, pages[page_index].title, pages[page_index].border);
// Wait for user selection
putchar('>');
putchar(' ');
loop = pages[page_index].loopback;
page_key = _getch();
// Forward paging
if (page_key == 'm' && page_index < page_count - 1)
++page_index;
// Backward paging
else if (page_key == 'n' && page_index > 0)
--page_index;
else
{
page_changed = false;
itemKey = page_key;
do {
action_performed = false;
itemKey != page_key ? itemKey = _getch() : page_key;
page_key = 0;
for (i = 0; i < pages[page_index].item_count; ++i)
{
if (pages[page_index].items[i].key == itemKey)
{
// Perform action
system("cls");
pages[page_index].items[i].action();
action_performed = true;
// Pause if requested
if (pages[page_index].pause)
{
putchar('\n');
system("pause");
}
}
}
} while (!action_performed);
}
} while (loop || page_changed);
page_index = 0;
} while (infinite_loop);
}
// Checks if a line index should display a menu item
bool is_item_line(const int line, const int itemc, int* item_index)
{
@ -40,57 +101,8 @@ void get_console_dimensions(int* width, int* height)
*height = csbi.srWindow.Bottom - csbi.srWindow.Top + 1;
}
void page(const struct MenuPage *pages, const size_t page_count, const bool infinite_loop) {
unsigned int page_index = 0;
bool action_performed, loop, pageChanged = true;
char pageKey, itemKey;
do {
do {
show_menu(pages[page_index].item_count, pages[page_index].items, pages[page_index].title, pages[page_index].border);
// Wait for user selection
putchar('>');
putchar(' ');
loop = pages[page_index].loopback;
pageKey = _getch();
if (pageKey == 'm')
page_index < page_count - 1 ? page_index++ : page_index;
else if (pageKey == 'n')
page_index > 0 ? page_index-- : page_index;
else {
pageChanged = false;
itemKey = pageKey;
do {
action_performed = false;
itemKey != pageKey ? itemKey = _getch() : pageKey;
pageKey = 0;
for (int i = 0; i < pages[page_index].item_count; ++i) {
if (pages[page_index].items[i].key == itemKey) {
// Perform action
system("cls");
pages[page_index].items[i].action();
action_performed = true;
// Pause if requested
if (pages[page_index].pause) {
putchar('\n');
system("pause");
}
}
}
} while (!action_performed);
}
} while (loop || pageChanged);
page_index = 0;
} while (infinite_loop);
}
void show_menu(const int itemc, const struct MenuItem itemv[], const char title[], const struct MenuBorder *border)
// Draws a menu to the console
void print_content(const int itemc, const struct MenuItem itemv[], const char title[], const struct MenuBorder* border)
{
unsigned width, height, item_index;
@ -99,7 +111,7 @@ void show_menu(const int itemc, const struct MenuItem itemv[], const char title[
// Get the width and height of the console window
get_console_dimensions(&width, &height);
// Print frame with title
for (unsigned i = 0; i < height - 1; ++i)
{
@ -111,13 +123,13 @@ void show_menu(const int itemc, const struct MenuItem itemv[], const char title[
for (unsigned j = 1; j < width - strlen(title) - 2; ++j)
{
if (j == ((width - strlen(title)) - 2)/ 2)
if (j == ((width - strlen(title)) - 2) / 2)
{
putchar(border->title_left);
fputs(title, stdout);
putchar(border->title_right);
}
else
else
{
putchar(border->line_horizontal);
}
@ -132,7 +144,7 @@ void show_menu(const int itemc, const struct MenuItem itemv[], const char title[
// Print item text
putchar(border->line_vertical);
if (strcmp(itemv[item_index].text, "BLANK") == 0) {
if (strcmp(itemv[item_index].text, "BLANK") == 0) {
putchar('\t');
// BLANK equals 5 characters
@ -146,13 +158,13 @@ void show_menu(const int itemc, const struct MenuItem itemv[], const char title[
{
printf("\t%c) %s", itemv[item_index].key, itemv[item_index].text);
}
// Print right side of frame
for (unsigned j = 0; j < width - strlen(itemv[item_index].text) - 12; ++j)
{
putchar(' ');
}
putchar(border->line_vertical);
}
// Line above bottom line

4
menu.h
View File

@ -39,11 +39,11 @@ struct MenuPage {
/// <param name="pages">An array of all pages to display.</param>
/// <param name="page_count">The length of the array <c>pages</c>.</param>
/// <param name="infinite_loop">Always display the first page after a loopback=false item finished executing.</param>
void page(const struct MenuPage* pages, const size_t page_count, const bool infinite_loop);
void show_menu(const struct MenuPage* pages, const size_t page_count, const bool infinite_loop);
/// <summary>Displaces a CUI menu to the user</summary>
/// <param name="itemc">The length of the array <c>itemv</c> of menu items.</param>
/// <param name="itemv">An array of all menu items to display in the menu.</param>
/// <param name="title">The title of the menu.</param>
/// <param name="border">Specifies the border in which the menu is displayed.</param>
void show_menu(const int itemc, const struct MenuItem itemv[], const char title[], const struct MenuBorder *border);
void show_menu(const struct MenuPage* pages, const size_t page_count, const bool infinite_loop);