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wip: good text support (scrolling not quite working rn)

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This commit is contained in:
0x35c
2024-12-12 23:14:20 +01:00
parent 2edc92bbcc
commit 917ccf0465
6 changed files with 70 additions and 49 deletions
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1
.gitignore vendored
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@ -3,3 +3,4 @@ obj
.*
compile_commands.json
tags
fonts

2
headers/font.h
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@ -2,6 +2,8 @@
#include <stdint.h>
#define FONT_SIZE 13
struct font {
uint32_t height;
uint32_t width;

9
headers/terminal.h
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@ -5,9 +5,10 @@
#include <stddef.h>
#include <stdint.h>
#define SCREEN_WIDTH 80
#define SCREEN_HEIGHT 25
#define TERM_BUF ((uint16_t *)0xC03FF000)
#define VGA_WIDTH 80
#define VGA_HEIGHT 25
#define SCREEN_WIDTH 1024
#define SCREEN_HEIGHT 768
#define TERM_COUNT 10
struct screen {
@ -15,7 +16,7 @@ struct screen {
size_t column;
uint32_t fg_color;
uint32_t bg_color;
uint16_t buffer[SCREEN_WIDTH * SCREEN_HEIGHT];
uint16_t buffer[VGA_WIDTH * VGA_HEIGHT];
uint32_t default_color;
char line[256];
};

2
src/drivers/keyboard.c
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@ -5,8 +5,6 @@
#include <stdbool.h>
#include <stdint.h>
extern struct screen *screen;
static bool new_input_indicator = false;
static struct key_event new_input = {};

6
src/kernel.c
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@ -31,7 +31,7 @@
void kernel_main(multiboot_info_t *mbd, uint32_t magic)
{
/* terminal_initialize(); */
terminal_initialize();
init_gdt();
init_idt();
init_memory(mbd, magic);
@ -42,7 +42,7 @@ void kernel_main(multiboot_info_t *mbd, uint32_t magic)
/* "complex 8*unknown quantity -byte descriptor table. -- Troy "
*/
/* "Martin 03:50, 22 March 2009 (UTC)\n"); */
terminal_putchar('A');
/* terminal_putchar('A'); */
/* memset(display.buff, 255, 1024 * 1024); */
/* shell_init(); */
shell_init();
}

99
src/terminal/put.c
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@ -1,6 +1,8 @@
#include "ctype.h"
#include "debug.h"
#include "font.h"
#include "fonts/eating_pasta_regular_32.h"
#include "fonts/eating_pasta_regular_13.h"
#include "fonts/minecraft_medium_13.h"
#include "kprintf.h"
#include "shell.h"
#include "string.h"
@ -14,6 +16,7 @@
static struct screen screens[TERM_COUNT];
struct screen *screen = &screens[0];
struct font *current_font = eating_pasta_regular_13_font;
void terminal_initialize(void)
{
@ -22,7 +25,8 @@ void terminal_initialize(void)
screens[i].column = 0;
screens[i].default_color = 0xffffff;
screens[i].fg_color = screens[i].default_color;
memcpy(screens[i].buffer, TERM_BUF, sizeof(screen->buffer));
/* memcpy(screens[i].buffer, TERM_BUF, sizeof(screen->buffer));
*/
}
}
@ -65,39 +69,49 @@ uint32_t terminal_get_default_color(void)
uint8_t terminal_get_char(int x, int y)
{
return screen->buffer[y * SCREEN_WIDTH + x];
return screen->buffer[y * VGA_WIDTH + x];
}
void terminal_putentryat(char c, uint32_t fg_color, uint32_t bg_color, size_t x,
size_t y)
void terminal_putentryat(struct font node, uint32_t fg_color, uint32_t bg_color,
size_t x, size_t y)
{
struct font node = eating_pasta_regular_32_font[(int)c];
char *glyph = node.bitmap;
for (size_t cy = 0; cy < node.height; cy++) {
for (size_t cx = 0; cx < node.width; cx++) {
if (glyph[cy * node.width + cx] == '#')
put_pixel(fg_color, x + cx, y + cy);
else if (bg_color)
put_pixel(bg_color, x + cx, y + cy);
put_pixel((glyph[cy * node.width + cx] == '#')
? fg_color
: bg_color,
x + cx, y + cy);
/* put_pixel((fg_color, x + cx, y + cy); */
/* else if (bg_color) */
/* put_pixel(bg_color, x + cx, y + cy); */
}
}
}
static struct font get_font_node(int c)
{
return current_font[c];
}
static void terminal_scroll(void)
{
// TODO
/* screen->row--; */
/* for (size_t i = 0; i < SCREEN_WIDTH * (SCREEN_HEIGHT - 1); i++) */
/* TERM_BUF[i] = TERM_BUF[i + SCREEN_WIDTH]; */
/* for (size_t i = 0; i < SCREEN_WIDTH; i++) */
/* terminal_putentryat(' ', VGA_COLOR_WHITE, i, SCREEN_HEIGHT - 1);
*/
screen->row--;
for (size_t i = 0; i < VGA_WIDTH * (VGA_HEIGHT - 1); i++) {
const uint32_t x = (i % VGA_WIDTH) * FONT_SIZE;
const uint32_t y = (i / VGA_WIDTH) * FONT_SIZE;
terminal_putentryat(get_font_node(screen->buffer[i]),
screen->fg_color, screen->bg_color, x, y);
}
/* for (size_t i = 0; i < VGA_WIDTH; i++) */
/* terminal_putentryat(get_font_node(' '), 0, 0, i * FONT_SIZE, */
/* VGA_HEIGHT - 1); */
}
static void terminal_new_line(void)
{
screen->column = 0;
if (++screen->row == SCREEN_HEIGHT)
if (++screen->row == VGA_HEIGHT)
terminal_scroll();
}
@ -105,15 +119,18 @@ void terminal_change_default_color(uint32_t color)
{
// TODO
/* terminal_set_color(color); */
/* for (size_t y = 0; y < SCREEN_HEIGHT; y++) { */
/* for (size_t x = 0; x < SCREEN_WIDTH; x++) { */
/* const size_t index = y * SCREEN_WIDTH + x; */
/* uint8_t entry_color = get_entry_color(TERM_BUF[index]);
/* for (size_t y = 0; y < VGA_HEIGHT; y++) { */
/* for (size_t x = 0; x < VGA_WIDTH; x++) { */
/* const size_t index = y * VGA_WIDTH + x; */
/* uint8_t entry_color =
* get_entry_color(TERM_BUF[index]);
*/
/* TERM_BUF[index] = vga_entry( */
/* TERM_BUF[index], */
/* entry_color == screen->default_color ? color */
/* : entry_color);
/* entry_color == screen->default_color ? color
*/
/* :
* entry_color);
*/
/* } */
/* } */
@ -131,10 +148,11 @@ void terminal_change_default_fg_color(uint32_t fg_color)
void terminal_clear(void)
{
// TODO
/* for (size_t y = 0; y < SCREEN_HEIGHT; y++) { */
/* for (size_t x = 0; x < SCREEN_WIDTH; x++) { */
/* const size_t index = y * SCREEN_WIDTH + x; */
/* TERM_BUF[index] = vga_entry(' ', screen->color); */
/* for (size_t y = 0; y < VGA_HEIGHT; y++) { */
/* for (size_t x = 0; x < VGA_WIDTH; x++) { */
/* const size_t index = y * VGA_WIDTH + x; */
/* TERM_BUF[index] = vga_entry(' ', screen->color);
*/
/* } */
/* } */
/* memcpy(screen->buffer, TERM_BUF, sizeof(screen->buffer)); */
@ -144,16 +162,17 @@ void terminal_clear(void)
int terminal_putchar(char c)
{
terminal_putentryat(c, 0xCCFFE5, 0xCCCC00, 10, 10);
if (c == '\r')
screen->column = 0;
else if (c == '\n')
terminal_new_line();
if (!isprint(c))
return 1;
terminal_putentryat(c, screen->fg_color, screen->bg_color,
screen->column, screen->row);
if (++screen->column == SCREEN_WIDTH)
screen->buffer[screen->column + screen->row * VGA_WIDTH] = c;
terminal_putentryat(get_font_node(c), screen->fg_color,
screen->bg_color, screen->column * FONT_SIZE,
screen->row * FONT_SIZE);
if (++screen->column == VGA_WIDTH)
terminal_new_line();
return 1;
}
@ -175,12 +194,12 @@ int terminal_writestring(const char *data)
void update_cursor(void)
{
uint16_t pos = screen->row * SCREEN_WIDTH + screen->column;
/* uint16_t pos = screen->row * VGA_WIDTH + screen->column; */
outb(0x3D4, 0x0F);
outb(0x3D5, pos & 0xFF);
outb(0x3D4, 0x0E);
outb(0x3D5, (pos >> 8) & 0xFF);
/* outb(0x3D4, 0x0F); */
/* outb(0x3D5, pos & 0xFF); */
/* outb(0x3D4, 0x0E); */
/* outb(0x3D5, (pos >> 8) & 0xFF); */
}
void move_cursor(int direction)
@ -190,14 +209,14 @@ void move_cursor(int direction)
if (screen->column) {
screen->column--;
} else if (screen->row) {
screen->column = SCREEN_WIDTH - 1;
screen->column = VGA_WIDTH - 1;
screen->row--;
}
break;
case RIGHT:
if (screen->column < SCREEN_WIDTH - 1) {
if (screen->column < VGA_WIDTH - 1) {
screen->column++;
} else if (screen->row < SCREEN_HEIGHT - 1) {
} else if (screen->row < VGA_HEIGHT - 1) {
screen->column = 0;
screen->row++;
} else {