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compositor.c
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compositor.c
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/**
* @brief Yutani - The ToaruOS Window Compositor.
*
* Yutani is a canvas-based window compositor and manager.
* It employs shared memory to provide clients access to
* canvases in which they may render, while using a packet-based
* socket interface to communicate actions between the server
* and client such as keyboard activity, mouse movement, responses
* to client events, etc., as well as to communicate requests from
* the client to the server, such as creation of new windows,
* movement, resizing, and display updates.
*
* @copyright
* This file is part of ToaruOS and is released under the terms
* of the NCSA / University of Illinois License - see LICENSE.md
* Copyright (C) 2013-2018 K. Lange
*/
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <stdlib.h>
#include <signal.h>
#include <fcntl.h>
#include <unistd.h>
#include <time.h>
#include <math.h>
#include <assert.h>
#include <getopt.h>
#include <errno.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/fswait.h>
#include <sys/sysfunc.h>
#include <sys/shm.h>
#include <pthread.h>
#include <dlfcn.h>
#include <toaru/graphics.h>
#include <toaru/mouse.h>
#include <toaru/kbd.h>
#include <toaru/pex.h>
#include <toaru/yutani.h>
#include <toaru/yutani-internal.h>
#include <toaru/yutani-server.h>
#include <toaru/hashmap.h>
#include <toaru/list.h>
#include <toaru/text.h>
#define _DEBUG_YUTANI
#ifdef _DEBUG_YUTANI
#include <toaru/trace.h>
#define TRACE_APP_NAME "yutani"
#else
#define TRACE(msg,...)
#endif
/* Early definitions */
static void mark_window(yutani_globals_t * yg, yutani_server_window_t * window);
static void window_actually_close(yutani_globals_t * yg, yutani_server_window_t * w);
static void notify_subscribers(yutani_globals_t * yg);
static void mouse_stop_drag(yutani_globals_t * yg);
static void window_move(yutani_globals_t * yg, yutani_server_window_t * window, int x, int y);
static yutani_server_window_t * top_at(yutani_globals_t * yg, uint16_t x, uint16_t y);
static void window_unminimize(yutani_globals_t * yg, yutani_server_window_t * window);
static void window_finish_minimize(yutani_globals_t * yg, yutani_server_window_t * w);
#define ENABLE_BLUR_BEHIND
#ifdef ENABLE_BLUR_BEHIND
#define BLUR_CLIP_MAX 20
#define BLUR_KERNEL 10
static char * blur_texture = NULL;
static gfx_context_t * blur_ctx = NULL;
static gfx_context_t * clip_ctx = NULL;
#endif
/**
* Print usage information.
*/
static int usage(char * argv[]) {
fprintf(stderr,
"Yutani - Window Compositor\n"
"\n"
"usage: %s [-n [-g WxH]] [-h]\n"
"\n"
" -n --nested \033[3mRun in a window.\033[0m\n"
" -h --help \033[3mShow this help message.\033[0m\n"
" -g --geometry \033[3mSet the size of the server framebuffer.\033[0m\n"
"\n"
" Yutani is the standard system compositor.\n"
"\n",
argv[0]);
return 1;
}
/**
* Parse arguments
*/
static int parse_args(int argc, char * argv[], int * out) {
static struct option long_opts[] = {
{"nested", no_argument, 0, 'n'},
{"geometry", required_argument, 0, 'g'},
{"help", no_argument, 0, 'h'},
{0,0,0,0}
};
int index, c;
while ((c = getopt_long(argc, argv, "hg:n", long_opts, &index)) != -1) {
if (!c) {
if (long_opts[index].flag == 0) {
c = long_opts[index].val;
}
}
switch (c) {
case 'h':
return usage(argv);
case 'n':
yutani_options.nested = 1;
break;
case 'g':
{
char * c = strstr(optarg, "x");
if (c) {
*c = '\0';
c++;
yutani_options.nest_width = atoi(optarg);
yutani_options.nest_height = atoi(c);
}
}
break;
default:
fprintf(stderr, "Unrecognized option: %c\n", c);
break;
}
}
*out = optind;
return 0;
}
static int32_t min(int32_t a, int32_t b) {
return (a < b) ? a : b;
}
static int32_t max(int32_t a, int32_t b) {
return (a > b) ? a : b;
}
static int next_buf_id(void) {
static int _next = 1;
return _next++;
}
static int next_wid(void) {
static int _next = 1;
return _next++;
}
uint64_t yutani_current_time(yutani_globals_t * yg) {
struct timeval t;
gettimeofday(&t, NULL);
time_t sec_diff = t.tv_sec - yg->start_time;
suseconds_t usec_diff = t.tv_usec - yg->start_subtime;
if (t.tv_usec < yg->start_subtime) {
sec_diff -= 1;
usec_diff = (1000000 + t.tv_usec) - yg->start_subtime;
}
return (uint64_t)(sec_diff * 1000 + usec_diff / 1000);
}
uint64_t yutani_time_since(yutani_globals_t * yg, uint64_t start_time) {
uint64_t now = yutani_current_time(yg);
uint64_t diff = now - start_time; /* Milliseconds */
return diff;
}
/**
* Translate and transform coordinate from screen-relative to window-relative.
*/
void yutani_device_to_window(yutani_server_window_t * window, int32_t x, int32_t y, int32_t * out_x, int32_t * out_y) {
if (!window) {
*out_x = 0;
*out_y = 0;
return;
}
*out_x = x - window->x;
*out_y = y - window->y;
if (!window->rotation) return;
double t_x = (double)*out_x - ((double)window->width / 2);
double t_y = (double)*out_y - ((double)window->height / 2);
double s = sin(-M_PI * (window->rotation/ 180.0));
double c = cos(-M_PI * (window->rotation/ 180.0));
double n_x = t_x * c - t_y * s;
double n_y = t_x * s + t_y * c;
*out_x = (int32_t)(n_x + ((double)window->width / 2));
*out_y = (int32_t)(n_y + ((double)window->height / 2));
}
/**
* Translate and transform coordinate from window-relative to screen-relative.
*/
void yutani_window_to_device(yutani_server_window_t * window, int32_t x, int32_t y, int32_t * out_x, int32_t * out_y) {
if (!window->rotation) {
*out_x = window->x + x;
*out_y = window->y + y;
return;
}
double t_x = (double)x - ((double)window->width / 2);
double t_y = (double)y - ((double)window->height / 2);
double s = sin((double)window->rotation * M_PI / 180.0);
double c = cos((double)window->rotation * M_PI / 180.0);
double n_x = t_x * c - t_y * s;
double n_y = t_x * s + t_y * c;
*out_x = (int32_t)(n_x + ((double)window->width / 2) + (double)window->x);
*out_y = (int32_t)(n_y + ((double)window->height / 2) + (double)window->y);
}
static list_t * window_zorder_owner(yutani_globals_t * yg, unsigned short index) {
switch (index) {
case YUTANI_ZORDER_BOTTOM:
case YUTANI_ZORDER_TOP:
return NULL;
case YUTANI_ZORDER_MENU:
return yg->menu_zs;
case YUTANI_ZORDER_OVERLAY:
return yg->overlay_zs;
default:
return yg->mid_zs;
}
}
/**
* Remove a window from the z stack.
*/
static void unorder_window(yutani_globals_t * yg, yutani_server_window_t * w) {
unsigned short index = w->z;
w->z = -1;
if (index == YUTANI_ZORDER_BOTTOM && yg->bottom_z == w) {
yg->bottom_z = NULL;
return;
}
if (index == YUTANI_ZORDER_TOP && yg->top_z == w) {
yg->top_z = NULL;
return;
}
list_t * zorder_owner = window_zorder_owner(yg, index);
if (!zorder_owner) return;
node_t * n = list_find(zorder_owner, w);
if (!n) return;
list_delete(zorder_owner, n);
free(n);
}
/**
* Move a window to a new stack order.
*/
static void reorder_window(yutani_globals_t * yg, yutani_server_window_t * window, uint16_t new_zed) {
if (!window) {
return;
}
unorder_window(yg, window);
window->z = new_zed;
list_t * zorder_owner = window_zorder_owner(yg, new_zed);
if (zorder_owner) {
list_insert(zorder_owner, window);
return;
}
if (new_zed == YUTANI_ZORDER_TOP) {
if (yg->top_z) {
unorder_window(yg, yg->top_z);
}
yg->top_z = window;
return;
}
if (new_zed == YUTANI_ZORDER_BOTTOM) {
if (yg->bottom_z) {
unorder_window(yg, yg->bottom_z);
}
yg->bottom_z = window;
return;
}
}
/**
* Move a window to the top of if its z stack.
*/
static void make_top(yutani_globals_t * yg, yutani_server_window_t * w) {
unsigned short index = w->z;
list_t * zorder_owner = window_zorder_owner(yg, index);
if (!zorder_owner) return;
node_t * n = list_find(zorder_owner, w);
if (!n) return; /* wat */
list_delete(zorder_owner, n);
list_append(zorder_owner, n);
}
/**
* Set a window as the focused window.
*
* Currently, we only support one focused window.
* In the future, we should support multiple windows as "focused" to account
* for multiple "seats" on a single display.
*/
static void set_focused_window(yutani_globals_t * yg, yutani_server_window_t * w) {
if (w == yg->focused_window) {
return; /* Already focused */
}
if (w && w->minimized) {
window_unminimize(yg,w);
}
if (yg->focused_window) {
/* Send focus change to old focused window */
yutani_msg_buildx_window_focus_change_alloc(response);
yutani_msg_buildx_window_focus_change(response, yg->focused_window->wid, 0);
pex_send(yg->server, yg->focused_window->owner, response->size, (char *)response);
}
yg->focused_window = w;
if (w) {
/* Send focus change to new focused window */
yutani_msg_buildx_window_focus_change_alloc(response);
yutani_msg_buildx_window_focus_change(response, w->wid, 1);
pex_send(yg->server, w->owner, response->size, (char *)response);
make_top(yg, w);
mark_window(yg, w);
} else {
/*
* There is no window to focus (we're unsetting focus);
* default to the bottom window (background)
*/
yg->focused_window = yg->bottom_z;
}
/* Notify all subscribers of window changes */
notify_subscribers(yg);
}
/**
* Get the focused window.
*
* In case there is no focused window, we return the bottom window.
*/
static yutani_server_window_t * get_focused(yutani_globals_t * yg) {
if (yg->focused_window) return yg->focused_window;
return yg->bottom_z;
}
static int yutani_pick_animation(uint32_t flags, int direction) {
if (flags & YUTANI_WINDOW_FLAG_DIALOG_ANIMATION) {
return (direction == 0) ? YUTANI_EFFECT_SQUEEZE_IN : YUTANI_EFFECT_SQUEEZE_OUT;
}
if (flags & YUTANI_WINDOW_FLAG_NO_ANIMATION) {
return (direction == 0) ? YUTANI_EFFECT_NONE : YUTANI_EFFECT_DISAPPEAR;
}
return (direction == 0) ? YUTANI_EFFECT_FADE_IN : YUTANI_EFFECT_FADE_OUT;
}
/**
* Create a server window object.
*
* Initializes a window of the particular size for a given client.
*/
static yutani_server_window_t * server_window_create(yutani_globals_t * yg, int width, int height, uintptr_t owner, uint32_t flags) {
yutani_server_window_t * win = malloc(sizeof(yutani_server_window_t));
win->wid = next_wid();
win->owner = owner;
list_insert(yg->windows, win);
hashmap_set(yg->wids_to_windows, (void*)(uintptr_t)win->wid, win);
list_t * client_list = hashmap_get(yg->clients_to_windows, (void *)owner);
list_insert(client_list, win);
win->x = 0;
win->y = 0;
win->z = 1;
win->width = width;
win->height = height;
win->bufid = next_buf_id();
win->rotation = 0;
win->newbufid = 0;
win->client_flags = 0;
win->client_icon = 0;
win->client_length = 0;
win->client_strings = NULL;
win->anim_mode = 0;
win->anim_start = 0;
win->alpha_threshold = 0;
win->show_mouse = 1;
win->tiled = 0;
win->untiled_width = 0;
win->untiled_height = 0;
win->default_mouse = 1;
win->server_flags = flags;
win->opacity = 255;
win->hidden = 1;
win->minimized = 0;
char key[1024];
YUTANI_SHMKEY(yg->server_ident, key, 1024, win);
size_t size = (width * height * 4);
win->buffer = shm_obtain(key, &size);
memset(win->buffer, 0, size);
list_insert(yg->mid_zs, win);
return win;
}
/**
* Update the shape threshold for a window.
*
* A shaping threshold is a byte representing the minimum
* required alpha for a window to be considered "solid".
* Eg., a value of 0 says all windows are solid, while a value of
* 1 requires a window to have at least some opacity to it,
* and a value of 255 requires fully opaque pixels.
*
* Not actually stored as a byte, so a value over 255 can be used.
* This results in a window that passes through all clicks.
*/
static void server_window_update_shape(yutani_globals_t * yg, yutani_server_window_t * window, int set) {
window->alpha_threshold = set;
}
/**
* Start resizing a window.
*
* Resizing a multi-stage process.
* The client and server agree on a size and the server prepares a buffer.
* The client then needs to accept the resize, fill the buffer, and then
* inform the server that it is ready, at which point we'll swap the
* buffer we are rendering from.
*/
static uint32_t server_window_resize(yutani_globals_t * yg, yutani_server_window_t * win, int width, int height) {
/* A client has accepted our offer, let's make a buffer for them */
if (win->newbufid) {
/* Already in the middle of an accept/done, bail */
return win->newbufid;
}
win->newbufid = next_buf_id();
{
char key[1024];
YUTANI_SHMKEY_EXP(yg->server_ident, key, 1024, win->newbufid);
size_t size = (width * height * 4);
win->newbuffer = shm_obtain(key, &size);
}
return win->newbufid;
}
/**
* Finish the resize process.
*
* We delete the unlink the old buffer and then swap the pointers
* for the new buffer.
*/
static void server_window_resize_finish(yutani_globals_t * yg, yutani_server_window_t * win, int width, int height) {
if (!win->newbufid) {
return;
}
int oldbufid = win->bufid;
mark_window(yg, win);
if (yg->resizing_window == win) {
yg->resize_release_time = 0;
if (yg->mouse_state == YUTANI_MOUSE_STATE_NORMAL) {
int32_t x, y;
if (yg->resizing_window->rotation) {
/* If the window is rotated, we need to move the center to be where the new center should be, but x/y are based on the unrotated upper left corner. */
/* The center always moves by one-half the resize dimensions */
int32_t center_x, center_y;
yutani_server_window_t fake_window = {
.width = yg->resizing_init_w,
.height = yg->resizing_init_h,
.x = yg->resizing_window->x,
.y = yg->resizing_window->y,
.rotation = yg->resizing_window->rotation,
};
yutani_window_to_device(&fake_window, yg->resizing_offset_x + yg->resizing_w / 2, yg->resizing_offset_y + yg->resizing_h / 2, ¢er_x, ¢er_y);
x = center_x - yg->resizing_w / 2;
y = center_y - yg->resizing_h / 2;
} else {
yutani_window_to_device(yg->resizing_window, yg->resizing_offset_x, yg->resizing_offset_y, &x, &y);
}
TRACE("resize complete, now %d x %d", yg->resizing_w, yg->resizing_h);
window_move(yg, yg->resizing_window, x,y);
yg->resizing_window = NULL;
yg->mouse_window = NULL;
}
}
win->width = width;
win->height = height;
win->bufid = win->newbufid;
win->buffer = win->newbuffer;
win->newbuffer = NULL;
win->newbufid = 0;
{
char key[1024];
YUTANI_SHMKEY_EXP(yg->server_ident, key, 1024, oldbufid);
shm_release(key);
}
mark_window(yg, win);
}
/**
* Mark a screen region as damaged.
*/
static void mark_screen(yutani_globals_t * yg, int32_t x, int32_t y, int32_t width, int32_t height) {
yutani_damage_rect_t * rect = malloc(sizeof(yutani_damage_rect_t));
rect->x = x;
rect->y = y;
rect->width = width;
rect->height = height;
list_insert(yg->update_list, rect);
}
/**
* Draw the cursor sprite.
*/
static void draw_cursor(yutani_globals_t * yg, int x, int y, int cursor) {
sprite_t * sprite = &yg->mouse_sprite;
static sprite_t * previous = NULL;
if (yg->resizing_window) {
switch (yg->resizing_direction) {
case SCALE_UP:
case SCALE_DOWN:
sprite = &yg->mouse_sprite_resize_v;
break;
case SCALE_LEFT:
case SCALE_RIGHT:
sprite = &yg->mouse_sprite_resize_h;
break;
case SCALE_DOWN_RIGHT:
case SCALE_UP_LEFT:
sprite = &yg->mouse_sprite_resize_da;
break;
case SCALE_DOWN_LEFT:
case SCALE_UP_RIGHT:
sprite = &yg->mouse_sprite_resize_db;
break;
default:
break;
}
} else if (yg->mouse_state == YUTANI_MOUSE_STATE_MOVING) {
sprite = &yg->mouse_sprite_drag;
} else {
switch (cursor) {
case YUTANI_CURSOR_TYPE_DRAG: sprite = &yg->mouse_sprite_drag; break;
case YUTANI_CURSOR_TYPE_RESIZE_VERTICAL: sprite = &yg->mouse_sprite_resize_v; break;
case YUTANI_CURSOR_TYPE_RESIZE_HORIZONTAL: sprite = &yg->mouse_sprite_resize_h; break;
case YUTANI_CURSOR_TYPE_RESIZE_UP_DOWN: sprite = &yg->mouse_sprite_resize_da; break;
case YUTANI_CURSOR_TYPE_RESIZE_DOWN_UP: sprite = &yg->mouse_sprite_resize_db; break;
case YUTANI_CURSOR_TYPE_POINT: sprite = &yg->mouse_sprite_point; break;
case YUTANI_CURSOR_TYPE_IBEAM: sprite = &yg->mouse_sprite_ibeam; break;
}
}
if (sprite != previous) {
mark_screen(yg, x / MOUSE_SCALE - MOUSE_OFFSET_X, y / MOUSE_SCALE - MOUSE_OFFSET_Y, MOUSE_WIDTH, MOUSE_HEIGHT);
previous = sprite;
}
if (yg->vbox_pointer > 0) {
if (write(yg->vbox_pointer, sprite->bitmap, 48*48*4) > 0) {
/* if that was successful, we don't need to draw the cursor */
return;
}
}
yutani_server_window_t * cursor_window = yg->resizing_window ? yg->resizing_window :
top_at(yg, yg->mouse_x / MOUSE_SCALE, yg->mouse_y / MOUSE_SCALE);
int16_t rotation = cursor_window ? cursor_window->rotation : 0;
if (rotation) {
draw_sprite_rotate(yg->backend_ctx, sprite, x / MOUSE_SCALE - MOUSE_OFFSET_X, y / MOUSE_SCALE - MOUSE_OFFSET_Y, (double)rotation * M_PI / 180.0, 1.0);
} else {
draw_sprite(yg->backend_ctx, sprite, x / MOUSE_SCALE - MOUSE_OFFSET_X, y / MOUSE_SCALE - MOUSE_OFFSET_Y);
}
}
/**
* Determine if a window has a solid pixel at a given screen-space coordinate.
*
* This is where we evaluate alpha thresholds. We only do this underneath
* the cursor, and only when we move the cursor. It's reasonably fast
* in those circumstances, but shouldn't be used for large regions. We
* do have one debug method that indicates the top window in a box
* around the cursor, but it is relatively slow.
*/
static yutani_server_window_t * check_top_at(yutani_globals_t * yg, yutani_server_window_t * w, uint16_t x, uint16_t y){
if (!w || w->hidden || w->minimized) return NULL;
int32_t _x = -1, _y = -1;
yutani_device_to_window(w, x, y, &_x, &_y);
if (_x < 0 || _x >= w->width || _y < 0 || _y >= w->height) return NULL;
uint32_t c = ((uint32_t *)w->buffer)[(w->width * _y + _x)];
uint8_t a = _ALP(c);
if (a >= w->alpha_threshold) {
return w;
}
return NULL;
}
/**
* Find the window that is at the top at a particular screen-space coordinate.
*
* This walks through each window from top to bottom (foreachr - reverse foreach)
* until it finds one with a pixel at this coordinate. Again, we only call this
* at the cursor coordinates, and it is not particularly fast, so don't use it
* anywhere that needs to hit a lot of coordinates.
*/
static yutani_server_window_t * top_at(yutani_globals_t * yg, uint16_t x, uint16_t y) {
if (check_top_at(yg, yg->top_z, x, y)) return yg->top_z;
foreachr(node, yg->menu_zs) {
yutani_server_window_t * w = node->value;
if (check_top_at(yg, w, x, y)) return w;
}
foreachr(node, yg->overlay_zs) {
yutani_server_window_t * w = node->value;
if (check_top_at(yg, w, x, y)) return w;
}
foreachr(node, yg->mid_zs) {
yutani_server_window_t * w = node->value;
if (check_top_at(yg, w, x, y)) return w;
}
if (check_top_at(yg, yg->bottom_z, x, y)) return yg->bottom_z;
return NULL;
}
/**
* Get the window at a coordinate and focus it.
*
* See the docs for the proceeding functions, but added to this
* focusing windows is also not particular fast as the reshuffle
* is complicated.
*/
static void set_focused_at(yutani_globals_t * yg, int x, int y) {
yutani_server_window_t * n_focused = top_at(yg, x, y);
set_focused_window(yg, n_focused);
}
/*
* Convenience functions for checking if a window is in the top/bottom stack.
*
* In the future, these single-item "stacks" will be replaced with dedicated stacks
* so we can have multiple background windows and multiple panels / always-top windows.
*/
int yutani_window_is_top(yutani_globals_t * yg, yutani_server_window_t * window) {
/* For now, just use simple z-order */
return window->z == YUTANI_ZORDER_TOP;
}
int yutani_window_is_bottom(yutani_globals_t * yg, yutani_server_window_t * window) {
/* For now, just use simple z-order */
return window->z == YUTANI_ZORDER_BOTTOM;
}
/**
* Get a color for a wid for debugging.
*
* Makes a pretty rainbow pattern.
*/
uint32_t yutani_color_for_wid(yutani_wid_t wid) {
static uint32_t colors[] = {
0xFF19aeff,
0xFFff4141,
0xFFffff3e,
0xFFff6600,
0xFF9ade00,
0xFFd76cff,
0xFF364e59,
0xFF0084c8,
0xFFdc0000,
0xFFff9900,
0xFF009100,
0xFFba00ff,
0xFFb88100,
0xFF9eabb0
};
int i = wid % (sizeof(colors) / sizeof(uint32_t));
return colors[i];
}
/**
* Determine if a matrix has an identity transformation for its linear component.
*/
static inline int matrix_is_translation(gfx_matrix_t m) {
return (m[0][0] == 1.0 && m[0][1] == 0.0 && m[1][0] == 0.0 && m[1][1] == 1.0);
}
static void apply_rotation(yutani_globals_t * yg, yutani_server_window_t * window, gfx_matrix_t m, int16_t r) {
if (window == yg->resizing_window) {
if (r) {
gfx_matrix_translate(m, yg->resizing_init_w / 2, yg->resizing_init_h / 2);
gfx_matrix_rotate(m, (double)r * M_PI / 180.0);
gfx_matrix_translate(m, -yg->resizing_init_w / 2, -yg->resizing_init_h / 2);
}
double x_scale = (double)yg->resizing_w / (double)yg->resizing_window->width;
double y_scale = (double)yg->resizing_h / (double)yg->resizing_window->height;
if (x_scale < 0.00001) {
x_scale = 0.00001;
}
if (y_scale < 0.00001) {
y_scale = 0.00001;
}
gfx_matrix_translate(m, (int)yg->resizing_offset_x, (int)yg->resizing_offset_y);
gfx_matrix_scale(m, x_scale, y_scale);
} else if (r) {
gfx_matrix_translate(m, window->width / 2, window->height / 2);
gfx_matrix_rotate(m, (double)r * M_PI / 180.0);
gfx_matrix_translate(m, -window->width / 2, -window->height / 2);
}
}
/**
* Blit a window to the framebuffer.
*
* Applies transformations (rotation, animations) and then renders
* the window through alpha blitting.
*/
static int yutani_blit_window(yutani_globals_t * yg, yutani_server_window_t * window, int x, int y) {
if (window->hidden || window->minimized) {
return 0;
}
sprite_t _win_sprite;
_win_sprite.width = window->width;
_win_sprite.height = window->height;
_win_sprite.bitmap = (uint32_t *)window->buffer;
_win_sprite.masks = NULL;
_win_sprite.blank = 0;
_win_sprite.alpha = ALPHA_EMBEDDED;
double opacity = (double)(window->opacity) / 255.0;
if (window->rotation || window == yg->resizing_window || window->anim_mode || (window->server_flags & YUTANI_WINDOW_FLAG_BLUR_BEHIND)) {
double m[2][3];
gfx_matrix_identity(m);
gfx_matrix_translate(m,x,y);
if (window->anim_mode) {
int frame = yutani_time_since(yg, window->anim_start);
if (frame >= yutani_animation_lengths[window->anim_mode]) {
/* XXX handle animation-end things like cleanup of closing windows */
if (yutani_is_closing_animation[window->anim_mode]) {
list_insert(yg->windows_to_remove, window);
return 0;
}
if (yutani_is_minimizing_animation[window->anim_mode]) {
list_insert(yg->windows_to_minimize, window);
return 0;
}
window->anim_mode = 0;
window->anim_start = 0;
apply_rotation(yg, window, m, window->rotation);
} else {
switch (window->anim_mode) {
case YUTANI_EFFECT_SQUEEZE_OUT:
case YUTANI_EFFECT_FADE_OUT:
{
frame = yutani_animation_lengths[window->anim_mode] - frame;
} /* fallthrough */
case YUTANI_EFFECT_SQUEEZE_IN:
case YUTANI_EFFECT_FADE_IN:
{
double time_diff = ((double)frame / (float)yutani_animation_lengths[window->anim_mode]);
apply_rotation(yg, window, m, window->rotation);
if (window->server_flags & YUTANI_WINDOW_FLAG_DIALOG_ANIMATION) {
double x = time_diff;
int t_y = (window->height * (1.0 -x)) / 2;
gfx_matrix_translate(m, 0, t_y);
gfx_matrix_scale(m, 1.0, x);
} else {
double x = 0.75 + time_diff * 0.25;
opacity *= time_diff;
if (!(window->server_flags & YUTANI_WINDOW_FLAG_ALT_ANIMATION)) {
int t_x = (window->width * (1.0 - x)) / 2;
int t_y = (window->height * (1.0 - x)) / 2;
gfx_matrix_translate(m, t_x, t_y);
gfx_matrix_scale(m, x, x);
}
}
}
break;
case YUTANI_EFFECT_MINIMIZE:
{
frame = yutani_animation_lengths[window->anim_mode] - frame;
} /* fallthrough */
case YUTANI_EFFECT_UNMINIMIZE:
{
double time_diff = ((double)frame / (float)yutani_animation_lengths[window->anim_mode]);
opacity *= time_diff;
double t_x = -(window->x - window->icon_x) * (1.0 - time_diff);
double t_y = -(window->y - window->icon_y) * (1.0 - time_diff);
double s_x = 1.0 + (((float)window->icon_w / (float)(window->width ?: 1.0)) - 1.0) * (1.0 - time_diff);
double s_y = 1.0 + (((float)window->icon_h / (float)(window->height ?: 1.0)) - 1.0) * (1.0 - time_diff);
gfx_matrix_translate(m, t_x, t_y);
gfx_matrix_scale(m, s_x, s_y);
apply_rotation(yg, window, m, window->rotation * time_diff);
}
break;
default:
apply_rotation(yg, window, m, window->rotation);
break;
}
}
} else {
apply_rotation(yg, window, m, window->rotation);
}
#ifdef ENABLE_BLUR_BEHIND
if (window->server_flags & YUTANI_WINDOW_FLAG_BLUR_BEHIND) {
extern void draw_sprite_transform_blur(gfx_context_t * ctx, gfx_context_t * blur_ctx, const sprite_t * sprite, gfx_matrix_t matrix, float alpha, uint8_t threshold);
draw_sprite_transform_blur(yg->backend_ctx, blur_ctx, &_win_sprite, m, opacity, window->alpha_threshold);
} else
#endif
if (matrix_is_translation(m)) {
draw_sprite_alpha(yg->backend_ctx, &_win_sprite, m[0][2], m[1][2], opacity);
} else {
draw_sprite_transform(yg->backend_ctx, &_win_sprite, m, opacity);
}
} else if (window->opacity != 255) {
draw_sprite_alpha(yg->backend_ctx, &_win_sprite, window->x, window->y, opacity);
} else {
draw_sprite(yg->backend_ctx, &_win_sprite, window->x, window->y);
}
#if YUTANI_DEBUG_WINDOW_BOUNDS
if (yg->debug_bounds) {
int32_t t_x, t_y;
int32_t s_x, s_y;
int32_t r_x, r_y;
int32_t q_x, q_y;
yutani_window_to_device(window, 0, 0, &t_x, &t_y);
yutani_window_to_device(window, window->width, window->height, &s_x, &s_y);
yutani_window_to_device(window, 0, window->height, &r_x, &r_y);
yutani_window_to_device(window, window->width, 0, &q_x, &q_y);
uint32_t x = alpha_blend(rgba(0,0,0,0), yutani_color_for_wid(window->wid), rgb(178,0,0));
struct TT_Contour * contour = tt_contour_start(t_x,t_y);
contour = tt_contour_line_to(contour, r_x,r_y);
contour = tt_contour_line_to(contour, s_x,s_y);
contour = tt_contour_line_to(contour, q_x,q_y);
struct TT_Shape * shape = tt_contour_finish(contour);
free(contour);
tt_path_paint(yg->backend_ctx, shape, x);
free(shape);
}
#endif
return 0;
}
/**
* VirtualBox Seamless desktop driver.
*
* Sends rectangles describing all the non-background windows
* to the VirtualBox Guest Additions driver for use with the
* seamless desktop mode.
*/
static void yutani_post_vbox_rects(yutani_globals_t * yg) {
if (yg->vbox_rects <= 0) return;
char tmp[4096];
uint32_t * count = (uint32_t *)tmp;
*count = 0;
struct Rect {
int32_t x;
int32_t y;
int32_t xe;
int32_t ye;
} __attribute__((packed));
struct Rect * rects = (struct Rect *)(tmp+sizeof(int32_t));
#define DO_WINDOW(win) if (win && !win->hidden && !win->minimized && *count < 255 ) { \
rects->x = (win)->x; \
rects->y = (win)->y; \
rects->xe = (win)->x + (win)->width; \
rects->ye = (win)->y + (win)->height; \
rects++; \
(*count)++; \
}
/* Add top window if it exists */
DO_WINDOW(yg->top_z);
/* Add regular windows */
foreach (node, yg->mid_zs) {
yutani_server_window_t * w = node->value;
DO_WINDOW(w);
}
/* Add overlay windows */
foreach (node, yg->overlay_zs) {
yutani_server_window_t * w = node->value;
DO_WINDOW(w);
}
/* Add menu windows */
foreach (node, yg->menu_zs) {
yutani_server_window_t * w = node->value;
DO_WINDOW(w);
}
/*
* If there were no windows, show the whole desktop
* so we can see, eg., the login screen.
*/
if (*count == 0) {
*count = 1;
rects->x = 0;
rects->y = 0;
rects->xe = yg->width;
rects->ye = yg->height;
}
/* Post rectangle data to driver */
write(yg->vbox_rects, tmp, sizeof(tmp));
}
/**
* Blit all windows into the given context.
*
* This is called for rendering and for screenshots.
*/
static void yutani_blit_windows(yutani_globals_t * yg) {
if (!yg->bottom_z || yg->bottom_z->anim_mode) {
draw_fill(yg->backend_ctx, rgb(0,0,0));
}
if (yg->bottom_z) yutani_blit_window(yg, yg->bottom_z, yg->bottom_z->x, yg->bottom_z->y);
foreach (node, yg->mid_zs) {
yutani_server_window_t * w = node->value;
if (w) yutani_blit_window(yg, w, w->x, w->y);
}
foreach (node, yg->overlay_zs) {
yutani_server_window_t * w = node->value;
if (w) yutani_blit_window(yg, w, w->x, w->y);
}
foreach (node, yg->menu_zs) {
yutani_server_window_t * w = node->value;
if (w) yutani_blit_window(yg, w, w->x, w->y);
}
if (yg->top_z) yutani_blit_window(yg, yg->top_z, yg->top_z->x, yg->top_z->y);
}
/**
* Take a screenshot
*/
static void yutani_screenshot(yutani_globals_t * yg) {
int task = yg->screenshot_frame;
yg->screenshot_frame = 0;
/* raw screenshots */
char fname[1024];