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weston/clients/simple-damage.c

959 lines
24 KiB

/*
* Copyright © 2014 Jason Ekstrand
* Copyright © 2011 Benjamin Franzke
* Copyright © 2010 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include "config.h"
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <assert.h>
#include <unistd.h>
#include <sys/mman.h>
#include <sys/time.h>
#include <signal.h>
#include <errno.h>
#include <wayland-client.h>
#include "shared/os-compatibility.h"
#include <libweston/zalloc.h>
#include "xdg-shell-client-protocol.h"
#include "fullscreen-shell-unstable-v1-client-protocol.h"
#include "viewporter-client-protocol.h"
int print_debug = 0;
struct display {
struct wl_display *display;
struct wl_registry *registry;
int compositor_version;
struct wl_compositor *compositor;
struct wp_viewporter *viewporter;
struct xdg_wm_base *wm_base;
struct zwp_fullscreen_shell_v1 *fshell;
struct wl_shm *shm;
uint32_t formats;
};
struct buffer {
struct wl_buffer *buffer;
uint32_t *shm_data;
int busy;
};
enum window_flags {
WINDOW_FLAG_USE_VIEWPORT = 0x1,
WINDOW_FLAG_ROTATING_TRANSFORM = 0x2,
WINDOW_FLAG_USE_DAMAGE_BUFFER = 0x4,
};
struct window {
struct display *display;
int width, height, border;
struct wl_surface *surface;
struct wp_viewport *viewport;
struct xdg_surface *xdg_surface;
struct xdg_toplevel *xdg_toplevel;
struct wl_callback *callback;
struct buffer buffers[2];
struct buffer *prev_buffer;
bool wait_for_configure;
enum window_flags flags;
int scale;
enum wl_output_transform transform;
struct {
float x, y; /* position in pixels */
float dx, dy; /* velocity in pixels/second */
int radius; /* radius in pixels */
uint32_t prev_time;
} ball;
};
static int running = 1;
static void
redraw(void *data, struct wl_callback *callback, uint32_t time);
static void
buffer_release(void *data, struct wl_buffer *buffer)
{
struct buffer *mybuf = data;
mybuf->busy = 0;
}
static const struct wl_buffer_listener buffer_listener = {
buffer_release
};
static int
create_shm_buffer(struct display *display, struct buffer *buffer,
int width, int height, uint32_t format)
{
struct wl_shm_pool *pool;
int fd, size, pitch;
void *data;
pitch = width * 4;
size = pitch * height;
fd = os_create_anonymous_file(size);
if (fd < 0) {
fprintf(stderr, "creating a buffer file for %d B failed: %s\n",
size, strerror(errno));
return -1;
}
data = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
if (data == MAP_FAILED) {
fprintf(stderr, "mmap failed: %s\n", strerror(errno));
close(fd);
return -1;
}
pool = wl_shm_create_pool(display->shm, fd, size);
buffer->buffer = wl_shm_pool_create_buffer(pool, 0,
width, height,
pitch, format);
wl_buffer_add_listener(buffer->buffer, &buffer_listener, buffer);
wl_shm_pool_destroy(pool);
close(fd);
buffer->shm_data = data;
return 0;
}
static void
xdg_surface_handle_configure(void *data, struct xdg_surface *surface,
uint32_t serial)
{
struct window *window = data;
xdg_surface_ack_configure(surface, serial);
if (window->wait_for_configure) {
redraw(window, NULL, 0);
window->wait_for_configure = false;
}
}
static const struct xdg_surface_listener xdg_surface_listener = {
xdg_surface_handle_configure,
};
static void
xdg_toplevel_handle_configure(void *data, struct xdg_toplevel *toplevel,
int32_t width, int32_t height,
struct wl_array *states)
{
}
static void
xdg_toplevel_handle_close(void *data, struct xdg_toplevel *xdg_toplevel)
{
running = 0;
}
static const struct xdg_toplevel_listener xdg_toplevel_listener = {
xdg_toplevel_handle_configure,
xdg_toplevel_handle_close,
};
static float
bounded_randf(float a, float b)
{
return a + ((float)rand() / (float)RAND_MAX) * (b - a);
}
static void
window_init_game(struct window *window)
{
int ax1, ay1, ax2, ay2; /* playable arena size */
struct timeval tv;
gettimeofday(&tv, NULL);
srand(tv.tv_usec);
window->ball.radius = 10;
ax1 = window->border + window->ball.radius;
ay1 = window->border + window->ball.radius;
ax2 = window->width - window->border - window->ball.radius;
ay2 = window->height - window->border - window->ball.radius;
window->ball.x = bounded_randf(ax1, ax2);
window->ball.y = bounded_randf(ay1, ay2);
window->ball.dx = bounded_randf(0, window->width);
window->ball.dy = bounded_randf(0, window->height);
window->ball.prev_time = 0;
}
static void
window_advance_game(struct window *window, uint32_t timestamp)
{
int ax1, ay1, ax2, ay2; /* Arena size */
float dt;
if (window->ball.prev_time == 0) {
/* first pass, don't do anything */
window->ball.prev_time = timestamp;
return;
}
/* dt in seconds */
dt = (float)(timestamp - window->ball.prev_time) / 1000.0f;
ax1 = window->border + window->ball.radius;
ay1 = window->border + window->ball.radius;
ax2 = window->width - window->border - window->ball.radius;
ay2 = window->height - window->border - window->ball.radius;
window->ball.x += window->ball.dx * dt;
while (window->ball.x < ax1 || ax2 < window->ball.x) {
if (window->ball.x < ax1)
window->ball.x = 2 * ax1 - window->ball.x;
if (ax2 <= window->ball.x)
window->ball.x = 2 * ax2 - window->ball.x;
window->ball.dx *= -1.0f;
}
window->ball.y += window->ball.dy * dt;
while (window->ball.y < ay1 || ay2 < window->ball.y) {
if (window->ball.y < ay1)
window->ball.y = 2 * ay1 - window->ball.y;
if (ay2 <= window->ball.y)
window->ball.y = 2 * ay2 - window->ball.y;
window->ball.dy *= -1.0f;
}
window->ball.prev_time = timestamp;
}
static struct window *
create_window(struct display *display, int width, int height,
enum wl_output_transform transform, int scale,
enum window_flags flags)
{
struct window *window;
if (display->compositor_version < 2 &&
(transform != WL_OUTPUT_TRANSFORM_NORMAL ||
flags & WINDOW_FLAG_ROTATING_TRANSFORM)) {
fprintf(stderr, "wl_surface.buffer_transform unsupported in "
"wl_surface version %d\n",
display->compositor_version);
exit(1);
}
if (display->compositor_version < 3 &&
(! (flags & WINDOW_FLAG_USE_VIEWPORT)) && scale != 1) {
fprintf(stderr, "wl_surface.buffer_scale unsupported in "
"wl_surface version %d\n",
display->compositor_version);
exit(1);
}
if (display->viewporter == NULL && (flags & WINDOW_FLAG_USE_VIEWPORT)) {
fprintf(stderr, "Compositor does not support wp_viewport");
exit(1);
}
if (display->compositor_version <
WL_SURFACE_DAMAGE_BUFFER_SINCE_VERSION &&
(flags & WINDOW_FLAG_USE_DAMAGE_BUFFER)) {
fprintf(stderr, "wl_surface.damage_buffer unsupported in "
"wl_surface version %d\n",
display->compositor_version);
exit(1);
}
window = zalloc(sizeof *window);
if (!window)
return NULL;
window->callback = NULL;
window->display = display;
window->width = width;
window->height = height;
window->border = 10;
window->flags = flags;
window->transform = transform;
window->scale = scale;
window_init_game(window);
window->surface = wl_compositor_create_surface(display->compositor);
if (window->flags & WINDOW_FLAG_USE_VIEWPORT)
window->viewport = wp_viewporter_get_viewport(display->viewporter,
window->surface);
if (display->wm_base) {
window->xdg_surface =
xdg_wm_base_get_xdg_surface(display->wm_base,
window->surface);
assert(window->xdg_surface);
xdg_surface_add_listener(window->xdg_surface,
&xdg_surface_listener, window);
window->xdg_toplevel =
xdg_surface_get_toplevel(window->xdg_surface);
assert(window->xdg_toplevel);
xdg_toplevel_add_listener(window->xdg_toplevel,
&xdg_toplevel_listener, window);
xdg_toplevel_set_title(window->xdg_toplevel, "simple-damage");
xdg_toplevel_set_app_id(window->xdg_toplevel,
"org.freedesktop.weston.simple-damage");
window->wait_for_configure = true;
wl_surface_commit(window->surface);
} else if (display->fshell) {
zwp_fullscreen_shell_v1_present_surface(display->fshell,
window->surface,
ZWP_FULLSCREEN_SHELL_V1_PRESENT_METHOD_DEFAULT,
NULL);
} else {
assert(0);
}
/* Initialise damage to full surface, so the padding gets painted */
if (window->flags & WINDOW_FLAG_USE_DAMAGE_BUFFER) {
wl_surface_damage_buffer(window->surface, 0, 0,
INT32_MAX, INT32_MAX);
} else {
wl_surface_damage(window->surface, 0, 0, INT32_MAX, INT32_MAX);
}
return window;
}
static void
destroy_window(struct window *window)
{
if (window->callback)
wl_callback_destroy(window->callback);
if (window->buffers[0].buffer)
wl_buffer_destroy(window->buffers[0].buffer);
if (window->buffers[1].buffer)
wl_buffer_destroy(window->buffers[1].buffer);
if (window->xdg_toplevel)
xdg_toplevel_destroy(window->xdg_toplevel);
if (window->xdg_surface)
xdg_surface_destroy(window->xdg_surface);
if (window->viewport)
wp_viewport_destroy(window->viewport);
wl_surface_destroy(window->surface);
free(window);
}
static struct buffer *
window_next_buffer(struct window *window)
{
struct buffer *buffer;
int ret = 0, bwidth, bheight;
if (!window->buffers[0].busy)
buffer = &window->buffers[0];
else if (!window->buffers[1].busy)
buffer = &window->buffers[1];
else
return NULL;
switch (window->transform) {
default:
case WL_OUTPUT_TRANSFORM_NORMAL:
case WL_OUTPUT_TRANSFORM_180:
case WL_OUTPUT_TRANSFORM_FLIPPED:
case WL_OUTPUT_TRANSFORM_FLIPPED_180:
bwidth = window->width * window->scale;
bheight = window->height * window->scale;
break;
case WL_OUTPUT_TRANSFORM_90:
case WL_OUTPUT_TRANSFORM_270:
case WL_OUTPUT_TRANSFORM_FLIPPED_90:
case WL_OUTPUT_TRANSFORM_FLIPPED_270:
bwidth = window->height * window->scale;
bheight = window->width * window->scale;
break;
}
if (!buffer->buffer) {
ret = create_shm_buffer(window->display, buffer,
bwidth, bheight,
WL_SHM_FORMAT_ARGB8888);
if (ret < 0)
return NULL;
}
return buffer;
}
static void
paint_box(uint32_t *pixels, int pitch, int x, int y, int width, int height,
uint32_t color)
{
int i, j;
for (j = y; j < y + height; ++j)
for (i = x; i < x + width; ++i)
pixels[i + j * pitch] = color;
}
static void
paint_circle(uint32_t *pixels, int pitch, float x, float y, int radius,
uint32_t color)
{
int i, j;
for (j = y - radius; j <= (int)(y + radius); ++j)
for (i = x - radius; i <= (int)(x + radius); ++i)
if ((j+0.5f-y)*(j+0.5f-y) + (i+0.5f-x)*(i+0.5f-x) <= radius * radius)
pixels[i + j * pitch] = color;
}
static void
window_get_transformed_ball(struct window *window, float *bx, float *by)
{
float wx, wy;
wx = window->ball.x;
wy = window->ball.y;
switch (window->transform) {
default:
case WL_OUTPUT_TRANSFORM_NORMAL:
*bx = wx;
*by = wy;
break;
case WL_OUTPUT_TRANSFORM_90:
*bx = wy;
*by = window->width - wx;
break;
case WL_OUTPUT_TRANSFORM_180:
*bx = window->width - wx;
*by = window->height - wy;
break;
case WL_OUTPUT_TRANSFORM_270:
*bx = window->height - wy;
*by = wx;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED:
*bx = window->width - wx;
*by = wy;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_90:
*bx = wy;
*by = wx;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_180:
*bx = wx;
*by = window->height - wy;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_270:
*bx = window->height - wy;
*by = window->width - wx;
break;
}
*bx *= window->scale;
*by *= window->scale;
if (window->viewport) {
/* We're drawing half-size because of the viewport */
*bx /= 2;
*by /= 2;
}
}
static const struct wl_callback_listener frame_listener;
static void
redraw(void *data, struct wl_callback *callback, uint32_t time)
{
struct window *window = data;
struct buffer *buffer;
int off_x = 0, off_y = 0;
int bwidth, bheight, bborder, bpitch, bradius;
float bx, by;
buffer = window_next_buffer(window);
if (!buffer) {
fprintf(stderr,
!callback ? "Failed to create the first buffer.\n" :
"Both buffers busy at redraw(). Server bug?\n");
abort();
}
/* Rotate the damage, but keep the even/odd parity so the
* dimensions of the buffers don't change */
if (window->flags & WINDOW_FLAG_ROTATING_TRANSFORM)
window->transform = (window->transform + 2) % 8;
switch (window->transform) {
default:
case WL_OUTPUT_TRANSFORM_NORMAL:
case WL_OUTPUT_TRANSFORM_180:
case WL_OUTPUT_TRANSFORM_FLIPPED:
case WL_OUTPUT_TRANSFORM_FLIPPED_180:
bwidth = window->width * window->scale;
bheight = window->height * window->scale;
break;
case WL_OUTPUT_TRANSFORM_90:
case WL_OUTPUT_TRANSFORM_270:
case WL_OUTPUT_TRANSFORM_FLIPPED_90:
case WL_OUTPUT_TRANSFORM_FLIPPED_270:
bwidth = window->height * window->scale;
bheight = window->width * window->scale;
break;
}
bpitch = bwidth;
bborder = window->border * window->scale;
bradius = window->ball.radius * window->scale;
if (window->viewport) {
int tx, ty;
/* Fill the whole thing with red to detect viewport errors */
paint_box(buffer->shm_data, bpitch, 0, 0, bwidth, bheight,
0xffff0000);
/* The buffer is the same size. However, we crop it
* and scale it up by a factor of 2 */
bborder /= 2;
bradius /= 2;
bwidth /= 2;
bheight /= 2;
/* Offset the drawing region */
tx = (window->width / 3) * window->scale;
ty = (window->height / 5) * window->scale;
switch (window->transform) {
default:
case WL_OUTPUT_TRANSFORM_NORMAL:
off_y = ty;
off_x = tx;
break;
case WL_OUTPUT_TRANSFORM_90:
off_y = bheight - tx;
off_x = ty;
break;
case WL_OUTPUT_TRANSFORM_180:
off_y = bheight - ty;
off_x = bwidth - tx;
break;
case WL_OUTPUT_TRANSFORM_270:
off_y = tx;
off_x = bwidth - ty;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED:
off_y = ty;
off_x = bwidth - tx;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_90:
off_y = tx;
off_x = ty;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_180:
off_y = bheight - ty;
off_x = tx;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_270:
off_y = bheight - tx;
off_x = bwidth - ty;
break;
}
wp_viewport_set_source(window->viewport,
wl_fixed_from_int(window->width / 3),
wl_fixed_from_int(window->height / 5),
wl_fixed_from_int(window->width / 2),
wl_fixed_from_int(window->height / 2));
}
/* Paint the border */
paint_box(buffer->shm_data, bpitch, off_x, off_y,
bwidth, bborder, 0xffffffff);
paint_box(buffer->shm_data, bpitch, off_x, off_y,
bborder, bheight, 0xffffffff);
paint_box(buffer->shm_data, bpitch, off_x + bwidth - bborder, off_y,
bborder, bheight, 0xffffffff);
paint_box(buffer->shm_data, bpitch, off_x, off_y + bheight - bborder,
bwidth, bborder, 0xffffffff);
/* fill with translucent */
paint_box(buffer->shm_data, bpitch, off_x + bborder, off_y + bborder,
bwidth - 2 * bborder, bheight - 2 * bborder, 0x80000000);
/* Damage where the ball was */
if (window->flags & WINDOW_FLAG_USE_DAMAGE_BUFFER) {
window_get_transformed_ball(window, &bx, &by);
wl_surface_damage_buffer(window->surface,
bx - bradius + off_x,
by - bradius + off_y,
bradius * 2 + 1,
bradius * 2 + 1);
} else {
wl_surface_damage(window->surface,
window->ball.x - window->ball.radius,
window->ball.y - window->ball.radius,
window->ball.radius * 2 + 1,
window->ball.radius * 2 + 1);
}
window_advance_game(window, time);
window_get_transformed_ball(window, &bx, &by);
/* Paint the ball */
paint_circle(buffer->shm_data, bpitch, off_x + bx, off_y + by,
bradius, 0xff00ff00);
if (print_debug) {
printf("Ball now located at (%f, %f)\n",
window->ball.x, window->ball.y);
printf("Circle painted at (%f, %f), radius %d\n", bx, by,
bradius);
printf("Buffer damage rectangle: (%d, %d) @ %dx%d\n",
(int)(bx - bradius) + off_x,
(int)(by - bradius) + off_y,
bradius * 2 + 1, bradius * 2 + 1);
}
/* Damage where the ball is now */
if (window->flags & WINDOW_FLAG_USE_DAMAGE_BUFFER) {
wl_surface_damage_buffer(window->surface,
bx - bradius + off_x,
by - bradius + off_y,
bradius * 2 + 1,
bradius * 2 + 1);
} else {
wl_surface_damage(window->surface,
window->ball.x - window->ball.radius,
window->ball.y - window->ball.radius,
window->ball.radius * 2 + 1,
window->ball.radius * 2 + 1);
}
wl_surface_attach(window->surface, buffer->buffer, 0, 0);
if (window->display->compositor_version >= 2 &&
(window->transform != WL_OUTPUT_TRANSFORM_NORMAL ||
window->flags & WINDOW_FLAG_ROTATING_TRANSFORM))
wl_surface_set_buffer_transform(window->surface,
window->transform);
if (window->viewport)
wp_viewport_set_destination(window->viewport,
window->width,
window->height);
if (window->scale != 1)
wl_surface_set_buffer_scale(window->surface,
window->scale);
if (callback)
wl_callback_destroy(callback);
window->callback = wl_surface_frame(window->surface);
wl_callback_add_listener(window->callback, &frame_listener, window);
wl_surface_commit(window->surface);
buffer->busy = 1;
}
static const struct wl_callback_listener frame_listener = {
redraw
};
static void
shm_format(void *data, struct wl_shm *wl_shm, uint32_t format)
{
struct display *d = data;
d->formats |= (1 << format);
}
struct wl_shm_listener shm_listener = {
shm_format
};
static void
xdg_wm_base_ping(void *data, struct xdg_wm_base *shell, uint32_t serial)
{
xdg_wm_base_pong(shell, serial);
}
static const struct xdg_wm_base_listener wm_base_listener = {
xdg_wm_base_ping,
};
static void
registry_handle_global(void *data, struct wl_registry *registry,
uint32_t id, const char *interface, uint32_t version)
{
struct display *d = data;
if (strcmp(interface, "wl_compositor") == 0) {
if (d->compositor_version > (int)version) {
fprintf(stderr, "Compositor does not support "
"wl_surface version %d\n", d->compositor_version);
exit(1);
}
if (d->compositor_version < 0)
d->compositor_version = version;
d->compositor =
wl_registry_bind(registry,
id, &wl_compositor_interface,
d->compositor_version);
} else if (strcmp(interface, "wp_viewporter") == 0) {
d->viewporter = wl_registry_bind(registry, id,
&wp_viewporter_interface, 1);
} else if (strcmp(interface, "xdg_wm_base") == 0) {
d->wm_base = wl_registry_bind(registry,
id, &xdg_wm_base_interface, 1);
xdg_wm_base_add_listener(d->wm_base, &wm_base_listener, d);
} else if (strcmp(interface, "zwp_fullscreen_shell_v1") == 0) {
d->fshell = wl_registry_bind(registry,
id, &zwp_fullscreen_shell_v1_interface, 1);
} else if (strcmp(interface, "wl_shm") == 0) {
d->shm = wl_registry_bind(registry,
id, &wl_shm_interface, 1);
wl_shm_add_listener(d->shm, &shm_listener, d);
}
}
static void
registry_handle_global_remove(void *data, struct wl_registry *registry,
uint32_t name)
{
}
static const struct wl_registry_listener registry_listener = {
registry_handle_global,
registry_handle_global_remove
};
static struct display *
create_display(int version)
{
struct display *display;
display = zalloc(sizeof *display);
if (display == NULL) {
fprintf(stderr, "out of memory\n");
exit(1);
}
display->display = wl_display_connect(NULL);
assert(display->display);
display->compositor_version = version;
display->formats = 0;
display->registry = wl_display_get_registry(display->display);
wl_registry_add_listener(display->registry,
&registry_listener, display);
wl_display_roundtrip(display->display);
if (display->shm == NULL) {
fprintf(stderr, "No wl_shm global\n");
exit(1);
}
wl_display_roundtrip(display->display);
if (!(display->formats & (1 << WL_SHM_FORMAT_XRGB8888))) {
fprintf(stderr, "WL_SHM_FORMAT_XRGB32 not available\n");
exit(1);
}
return display;
}
static void
destroy_display(struct display *display)
{
if (display->shm)
wl_shm_destroy(display->shm);
if (display->wm_base)
xdg_wm_base_destroy(display->wm_base);
if (display->fshell)
zwp_fullscreen_shell_v1_release(display->fshell);
if (display->viewporter)
wp_viewporter_destroy(display->viewporter);
if (display->compositor)
wl_compositor_destroy(display->compositor);
wl_registry_destroy(display->registry);
wl_display_flush(display->display);
wl_display_disconnect(display->display);
free(display);
}
static void
signal_int(int signum)
{
running = 0;
}
static void
print_usage(int retval)
{
printf(
"usage: weston-simple-damage [options]\n\n"
"options:\n"
" -h, --help\t\tPring this help\n"
" --verbose\t\tPrint verbose log information\n"
" --version=VERSION\tVersion of wl_surface to use\n"
" --width=WIDTH\t\tWidth of the window\n"
" --height=HEIGHT\tHeight of the window\n"
" --scale=SCALE\t\tScale factor for the surface\n"
" --transform=TRANSFORM\tTransform for the surface\n"
" --rotating-transform\tUse a different buffer_transform for each frame\n"
" --use-viewport\tUse wp_viewport\n"
" --use-damage-buffer\tUse damage_buffer to post damage\n"
);
exit(retval);
}
static int
parse_transform(const char *str, enum wl_output_transform *transform)
{
int i;
static const struct {
const char *name;
enum wl_output_transform transform;
} names[] = {
{ "normal", WL_OUTPUT_TRANSFORM_NORMAL },
{ "90", WL_OUTPUT_TRANSFORM_90 },
{ "180", WL_OUTPUT_TRANSFORM_180 },
{ "270", WL_OUTPUT_TRANSFORM_270 },
{ "flipped", WL_OUTPUT_TRANSFORM_FLIPPED },
{ "flipped-90", WL_OUTPUT_TRANSFORM_FLIPPED_90 },
{ "flipped-180", WL_OUTPUT_TRANSFORM_FLIPPED_180 },
{ "flipped-270", WL_OUTPUT_TRANSFORM_FLIPPED_270 },
};
for (i = 0; i < 8; i++) {
if (strcmp(names[i].name, str) == 0) {
*transform = names[i].transform;
return 1;
}
}
return 0;
}
int
main(int argc, char **argv)
{
struct sigaction sigint;
struct display *display;
struct window *window;
int i, ret = 0;
int version = -1;
int width = 300, height = 200, scale = 1;
enum wl_output_transform transform = WL_OUTPUT_TRANSFORM_NORMAL;
enum window_flags flags = 0;
for (i = 1; i < argc; ++i) {
if (strcmp(argv[i], "--help") == 0 ||
strcmp(argv[i], "-h") == 0) {
print_usage(0);
} else if (sscanf(argv[i], "--version=%d", &version) > 0) {
if (version < 1 || version > 4) {
fprintf(stderr, "Unsupported wl_surface version: %d\n",
version);
return 1;
}
continue;
} else if (strcmp(argv[i], "--verbose") == 0) {
print_debug = 1;
continue;
} else if (sscanf(argv[i], "--width=%d", &width) > 0) {
continue;
} else if (sscanf(argv[i], "--height=%d", &height) > 0) {
continue;
} else if (strncmp(argv[i], "--transform=", 12) == 0 &&
parse_transform(argv[i] + 12, &transform) > 0) {
continue;
} else if (strcmp(argv[i], "--rotating-transform") == 0) {
flags |= WINDOW_FLAG_ROTATING_TRANSFORM;
continue;
} else if (sscanf(argv[i], "--scale=%d", &scale) > 0) {
continue;
} else if (strcmp(argv[i], "--use-viewport") == 0) {
flags |= WINDOW_FLAG_USE_VIEWPORT;
continue;
} else if (strcmp(argv[i], "--use-damage-buffer") == 0) {
flags |= WINDOW_FLAG_USE_DAMAGE_BUFFER;
continue;
} else {
printf("Invalid option: %s\n", argv[i]);
print_usage(255);
}
}
display = create_display(version);
window = create_window(display, width, height, transform, scale, flags);
if (!window)
return 1;
sigint.sa_handler = signal_int;
sigemptyset(&sigint.sa_mask);
sigint.sa_flags = SA_RESETHAND;
sigaction(SIGINT, &sigint, NULL);
if (!window->wait_for_configure)
redraw(window, NULL, 0);
while (running && ret != -1)
ret = wl_display_dispatch(display->display);
fprintf(stderr, "simple-shm exiting\n");
destroy_window(window);
destroy_display(display);
return 0;
}