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// MIT License, Copyright (c) 2020 Marvin Borner
#include <assert.h>
#include <def.h>
#include <gfx.h>
#include <input.h>
#include <keymap.h>
#include <list.h>
#include <random.h>
#include <vesa.h>
struct client {
u32 pid;
};
struct window {
u32 id;
const char *name;
struct context ctx;
struct client client;
u32 flags;
vec3 pos;
};
static struct vbe screen = { 0 };
static struct list *windows = NULL;
static struct window *root = NULL;
static struct window *cursor = NULL;
static struct keymap *keymap = NULL;
static struct client wm_client = { 0 };
static struct {
u8 shift : 1;
u8 alt : 1;
u8 ctrl : 1;
} special_keys = { 0 };
static struct {
vec2 pos;
u8 left : 1;
u8 mid : 1;
u8 right : 1;
} mouse = { 0 };
static struct window *window_create(struct client client, const char *name, struct vec3 pos,
struct vec2 size, u32 flags)
{
struct window *win = malloc(sizeof(*win));
win->id = rand();
win->name = name;
win->ctx.size = size;
win->ctx.bpp = screen.bpp;
win->ctx.pitch = size.x * (win->ctx.bpp >> 3);
if ((flags & WF_NO_FB) == 0)
win->ctx.fb = malloc(size.y * win->ctx.pitch);
win->client = client;
win->flags = flags;
win->pos = pos;
list_add(windows, win);
return win;
}
static struct window *window_find(u32 id)
{
struct node *iterator = windows->head;
while (iterator) {
struct window *win = iterator->data;
if (win->id == id)
return win;
iterator = iterator->next;
}
return NULL;
}
static void window_destroy(struct window *win)
{
free(win->ctx.fb);
free(win);
}
static void handle_event_keyboard(struct event_keyboard *event)
{
if (event->magic != KEYBOARD_MAGIC) {
log("Keyboard magic doesn't match!\n");
return;
}
if (event->scancode == KEY_LEFTSHIFT || event->scancode == KEY_RIGHTSHIFT)
special_keys.shift ^= 1;
else if (event->scancode == KEY_LEFTALT || event->scancode == KEY_RIGHTALT)
special_keys.alt ^= 1;
else if (event->scancode == KEY_LEFTCTRL || event->scancode == KEY_RIGHTCTRL)
special_keys.ctrl ^= 1;
char ch;
if (special_keys.shift)
ch = keymap->shift_map[event->scancode];
else if (special_keys.alt)
ch = keymap->alt_map[event->scancode];
else
ch = keymap->map[event->scancode];
(void)ch;
}
static void handle_event_mouse(struct event_mouse *event)
{
if (event->magic != MOUSE_MAGIC) {
log("Mouse magic doesn't match!\n");
return;
}
mouse.pos.x += event->diff_x;
mouse.pos.y -= event->diff_y;
// Fix x overflow
if ((signed)mouse.pos.x < 0)
mouse.pos.x = 0;
else if (mouse.pos.x + cursor->ctx.size.x > (unsigned)screen.width - 1)
mouse.pos.x = screen.width - cursor->ctx.size.x - 1;
// Fix y overflow
if ((signed)mouse.pos.y < 0)
mouse.pos.y = 0;
else if (mouse.pos.y + cursor->ctx.size.y > (unsigned)screen.height - 1)
mouse.pos.y = screen.height - cursor->ctx.size.y - 1;
//log("%d %d\n", mouse.pos.x, mouse.pos.y);
cursor->pos = vec2to3(mouse.pos, U32_MAX);
gfx_ctx_on_ctx(&root->ctx, &cursor->ctx, vec3to2(cursor->pos));
}
int main(int argc, char **argv)
{
(void)argc;
screen = *(struct vbe *)argv[1];
wm_client = (struct client){ .pid = getpid() };
log("WM loaded: %dx%d\n", screen.width, screen.height);
windows = list_new();
keymap = keymap_parse("/res/keymaps/en.keymap");
root = window_create(wm_client, "root", vec3(0, 0, 0), vec2(screen.width, screen.height),
WF_NO_FB);
root->ctx.fb = screen.fb;
root->flags ^= WF_NO_FB;
cursor = window_create(wm_client, "cursor", vec3(0, 0, 0), vec2(32, 32),
WF_NO_DRAG | WF_NO_FOCUS | WF_NO_RESIZE);
gfx_write(&root->ctx, vec2(0, 0), FONT_32, COLOR_FG, "Loading Melvix...");
gfx_load_wallpaper(&root->ctx, "/res/wall.png");
gfx_load_wallpaper(&cursor->ctx, "/res/cursor.png");
struct message msg = { 0 };
struct event_keyboard event_keyboard = { 0 };
struct event_mouse event_mouse = { 0 };
const char *listeners[] = { "/dev/kbd", "/dev/mouse", "/proc/self/msg" };
while (1) {
int poll_ret = 0;
if ((poll_ret = poll(listeners)) >= 0) {
if (poll_ret == 0) {
if (read(listeners[poll_ret], &event_keyboard, 0,
sizeof(event_keyboard)) > 0)
handle_event_keyboard(&event_keyboard);
continue;
} else if (poll_ret == 1) {
if (read(listeners[poll_ret], &event_mouse, 0,
sizeof(event_mouse)) > 0)
handle_event_mouse(&event_mouse);
continue;
} else if (poll_ret == 2) {
if (read(listeners[poll_ret], &msg, 0, sizeof(msg)) <= 0)
continue;
}
} else {
err(1, "POLL ERROR!\n");
}
if (msg.magic != MSG_MAGIC) {
log("Message magic doesn't match!\n");
continue;
}
log("not implemented!\n");
};
// TODO: Execute?
free(keymap);
list_destroy(windows);
return 0;
}
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