Jannis/BoredOS
1
0
Fork 0
mirror of https://github.com/JannisHeydemann/BoredOS.git synced 2026-05-30 02:16:58 +00:00
Code Issues Packages Projects Releases Wiki Activity

Initial commit

Browse Source
This commit is contained in:
Chris
2026-02-04 20:51:17 +01:00
commit ddac1a791e
132 changed files with 11491 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

212
src/kernel/notepad.c Normal file
View File

@@ -0,0 +1,212 @@
#include "notepad.h"
#include "graphics.h"
#include <stddef.h>
Window win_notepad;
static int notepad_scroll_line = 0; // Track which line is at top of visible area
static void notepad_ensure_cursor_visible(Window *win) {
// Calculate how many lines fit in the notepad window (allow 3-4 extra lines)
int visible_lines = (win->h - 40) / 10 + 3; // Content area height / line height + buffer
if (visible_lines < 1) visible_lines = 1;
// Count which line the cursor is on
int cursor_line = 0;
for (int i = 0; i < win->cursor_pos && i < win->buf_len; i++) {
if (win->buffer[i] == '\n') cursor_line++;
}
// Scroll up if cursor is above visible area
if (cursor_line < notepad_scroll_line) {
notepad_scroll_line = cursor_line;
}
// Scroll down if cursor is below visible area
if (cursor_line >= notepad_scroll_line + visible_lines) {
notepad_scroll_line = cursor_line - visible_lines + 1;
}
}
static void notepad_paint(Window *win) {
// Draw text starting from scroll position
int display_line = 0;
int current_line = 0;
int current_x = win->x + 8;
int current_y = win->y + 30;
for (int i = 0; i < win->buf_len; i++) {
// Skip lines before scroll position
if (current_line < notepad_scroll_line) {
if (win->buffer[i] == '\n') {
current_line++;
}
continue;
}
// Stop if we've gone past visible area
if (display_line >= (win->h - 40) / 10) {
break;
}
if (win->buffer[i] == '\n') {
current_x = win->x + 8;
current_y += 10;
current_line++;
display_line++;
} else {
// Draw single character
char ch[2] = {win->buffer[i], 0};
draw_string(current_x, current_y, ch, COLOR_BLACK);
current_x += 8;
}
}
// Cursor
if (win->focused) {
int cx = win->x + 8;
int cy = win->y + 30;
int current_line = 0;
for (int i = 0; i < win->cursor_pos; i++) {
if (win->buffer[i] == '\n') {
cx = win->x + 8;
cy += 10;
current_line++;
} else {
cx += 8;
}
}
// Only draw cursor if it's in visible area
if (current_line >= notepad_scroll_line &&
current_line < notepad_scroll_line + (win->h - 40) / 10) {
draw_rect(cx, cy, 2, 8, COLOR_BLACK);
}
}
}
static void notepad_key(Window *target, char c) {
if (c == 17) { // UP
if (target->cursor_pos > 0) {
int curr = target->cursor_pos;
int line_start = curr;
while (line_start > 0 && target->buffer[line_start - 1] != '\n') {
line_start--;
}
int col = curr - line_start;
if (line_start > 0) {
int prev_line_end = line_start - 1;
int prev_line_start = prev_line_end;
while (prev_line_start > 0 && target->buffer[prev_line_start - 1] != '\n') {
prev_line_start--;
}
int prev_line_len = prev_line_end - prev_line_start;
if (col > prev_line_len) col = prev_line_len;
target->cursor_pos = prev_line_start + col;
}
}
notepad_ensure_cursor_visible(target);
} else if (c == 18) { // DOWN
int len = target->buf_len;
if (target->cursor_pos < len) {
int curr = target->cursor_pos;
int line_start = curr;
while (line_start > 0 && target->buffer[line_start - 1] != '\n') {
line_start--;
}
int col = curr - line_start;
int next_line_start = curr;
while (next_line_start < len && target->buffer[next_line_start] != '\n') {
next_line_start++;
}
if (next_line_start < len) {
next_line_start++; // Skip newline
int next_line_end = next_line_start;
while (next_line_end < len && target->buffer[next_line_end] != '\n') {
next_line_end++;
}
int next_line_len = next_line_end - next_line_start;
if (col > next_line_len) col = next_line_len;
target->cursor_pos = next_line_start + col;
} else {
target->cursor_pos = len;
}
}
notepad_ensure_cursor_visible(target);
} else if (c == 19) { // LEFT
if (target->cursor_pos > 0) target->cursor_pos--;
notepad_ensure_cursor_visible(target);
} else if (c == 20) { // RIGHT
if (target->cursor_pos < target->buf_len) target->cursor_pos++;
notepad_ensure_cursor_visible(target);
} else if (c == '\b') { // Backspace
if (target->cursor_pos > 0) {
// Shift left
for (int i = target->cursor_pos; i < target->buf_len; i++) {
target->buffer[i - 1] = target->buffer[i];
}
target->buf_len--;
target->cursor_pos--;
target->buffer[target->buf_len] = 0;
notepad_ensure_cursor_visible(target);
}
} else if (c == '\n') { // Enter
if (target->buf_len < 1023) {
// Shift right
for (int i = target->buf_len; i > target->cursor_pos; i--) {
target->buffer[i] = target->buffer[i - 1];
}
target->buffer[target->cursor_pos] = c;
target->buf_len++;
target->cursor_pos++;
target->buffer[target->buf_len] = 0;
notepad_ensure_cursor_visible(target);
}
} else {
// Printable char
if (target->buf_len < 1023) {
for (int i = target->buf_len; i > target->cursor_pos; i--) {
target->buffer[i] = target->buffer[i - 1];
}
target->buffer[target->cursor_pos] = c;
target->buf_len++;
target->cursor_pos++;
target->buffer[target->buf_len] = 0;
notepad_ensure_cursor_visible(target);
}
}
}
void notepad_init(void) {
win_notepad.title = "Notepad";
win_notepad.x = 100;
win_notepad.y = 100;
win_notepad.w = 400;
win_notepad.h = 300;
win_notepad.visible = false;
win_notepad.buf_len = 0;
win_notepad.cursor_pos = 0;
win_notepad.focused = false;
win_notepad.z_index = 0;
win_notepad.paint = notepad_paint;
win_notepad.handle_key = notepad_key;
win_notepad.handle_click = NULL;
win_notepad.handle_right_click = NULL;
notepad_scroll_line = 0;
for(int i=0; i<1024; i++) win_notepad.buffer[i] = 0;
}
void notepad_reset(void) {
// Clear notepad buffer and reset cursor on close/reopen
win_notepad.buf_len = 0;
win_notepad.cursor_pos = 0;
win_notepad.focused = false;
notepad_scroll_line = 0;
for(int i=0; i<1024; i++) win_notepad.buffer[i] = 0;
}