138 lines
3.3 KiB
C
138 lines
3.3 KiB
C
#include "pch.h"
|
|
#include "menu.h"
|
|
|
|
// Checks if a line index should display a menu item
|
|
bool is_item_line(const int line, const int itemc, int* item_index)
|
|
{
|
|
if (line >= 2 && line % 2 == 0)
|
|
{
|
|
// Lines 2, 4, ...
|
|
*item_index = (line - 2) / 2;
|
|
return *item_index < itemc;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// Acquires the dimensions (width and height) of the console window
|
|
void get_console_dimensions(int* width, int* height)
|
|
{
|
|
CONSOLE_SCREEN_BUFFER_INFO csbi;
|
|
|
|
GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &csbi);
|
|
*width = csbi.srWindow.Right - csbi.srWindow.Left + 1;
|
|
*height = csbi.srWindow.Bottom - csbi.srWindow.Top + 1;
|
|
}
|
|
|
|
void show_menu(const int itemc, struct MenuItem itemv[], const char title[], bool loopback, bool pause, enum MenuStyle style)
|
|
{
|
|
unsigned width, height, item_index;
|
|
char key;
|
|
bool action_performed;
|
|
|
|
// Clear the console window
|
|
system("cls");
|
|
|
|
// 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)
|
|
{
|
|
// Top line with title
|
|
if (i == 0)
|
|
{
|
|
for (unsigned j = 0; j < width - strlen(title) - 1; ++j)
|
|
{
|
|
if (j == ((width - strlen(title)) - 2)/ 2)
|
|
{
|
|
style == DEFAULT ? putchar('*') : style == MODERN ? putchar('[') : putchar(' ');
|
|
fputs(title, stdout);
|
|
style == DEFAULT ? putchar('*') : style == MODERN ? putchar('[') : putchar(' ');
|
|
}
|
|
else
|
|
{
|
|
style == DEFAULT ? putchar('*') : style == MODERN ? putchar('-') : putchar(' ');
|
|
}
|
|
}
|
|
}
|
|
// Line with menu item
|
|
else if (is_item_line(i, itemc, &item_index))
|
|
{
|
|
// Print item text
|
|
|
|
style == DEFAULT ? putchar('*') : style == MODERN ? putchar('|') : putchar(' ');
|
|
|
|
if (strcmp(itemv[item_index].text, "BLANK") == 0) {
|
|
putchar('\t');
|
|
|
|
// BLANK equals 5 characters
|
|
// + 3 since it regularly is "%c) " inbetween title and key
|
|
for (unsigned j = 0; j < 8; ++j)
|
|
{
|
|
putchar(' ');
|
|
}
|
|
}
|
|
else {
|
|
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(' ');
|
|
}
|
|
|
|
style == DEFAULT ? putchar('*') : style == MODERN ? putchar('|') : putchar(' ');
|
|
}
|
|
// Line above bottom line
|
|
else if (i == height - 3)
|
|
{
|
|
for (unsigned j = 0; j < width; ++j)
|
|
{
|
|
style == DEFAULT ? putchar('*') : style == MODERN ? putchar('-') : putchar(' ');
|
|
}
|
|
}
|
|
// Blank line
|
|
else
|
|
{
|
|
i != height - 2 ? style == DEFAULT ? putchar('*') : style == MODERN ? putchar('|') : putchar(' ') : putchar(' ');
|
|
for (unsigned j = 0; j < width - 2; ++j)
|
|
{
|
|
putchar(' ');
|
|
}
|
|
i != height - 2 ? style == DEFAULT ? putchar('*') : style == MODERN ? putchar('|') : putchar(' ') : putchar(' ');
|
|
}
|
|
}
|
|
|
|
// Wait for user selection
|
|
putchar('>');
|
|
putchar(' ');
|
|
action_performed = false;
|
|
do {
|
|
key = _getch();
|
|
for (int i = 0; i < itemc; ++i)
|
|
{
|
|
if (itemv[i].key == key)
|
|
{
|
|
// Perform action
|
|
system("cls");
|
|
itemv[i].action();
|
|
action_performed = true;
|
|
|
|
// Pause if requested
|
|
if (pause)
|
|
{
|
|
putchar('\n');
|
|
system("pause");
|
|
}
|
|
}
|
|
}
|
|
} while (!action_performed);
|
|
|
|
// Show menu again if requested
|
|
if (loopback)
|
|
{
|
|
show_menu(itemc, itemv, title, loopback, pause, style);
|
|
}
|
|
} |