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Removed show_menu from menu.h, simplified some code

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This commit is contained in:
Kai S. K. Engelbart 2020-01-14 08:12:36 +01:00
parent 72046f2e0c
commit 9f5b615df9
2 changed files with 73 additions and 70 deletions
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116
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 show_menu(const int itemc, const struct MenuItem itemv[], const char title[], const struct MenuBorder* border);
void page(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 {
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;
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 show_menu(const int itemc, const struct MenuItem itemv[], const char title[], const struct MenuBorder* border)
{
unsigned width, height, item_index;
@ -111,7 +123,7 @@ 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);

15
menu.h
View File

@ -2,7 +2,6 @@
#include "pch.h"
/// <summary>Represents one menu item in a menu.</summary>
struct MenuItem {
char* text;
@ -22,10 +21,10 @@ struct MenuBorder {
char title_right;
};
// Default borders initialized in menu.c
const extern struct MenuBorder DEFAULT, MODERN, NO_BORDER, SOLID;
/// <summary>Represents a page in the menu.</summary>
/// <summary>Represents a page containing menu items inside a menu.</summary>
struct MenuPage {
const struct MenuItem* items;
const size_t item_count;
@ -34,16 +33,8 @@ struct MenuPage {
const struct MenuBorder* border;
};
/// <summary>Constructs a menu with a specific amount of pages</summary>
/// <summary>Constructs a CUI menu with a specific amount of pages.</summary>
/// <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);
/// <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);