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weston/window.c

391 lines
10 KiB

#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <math.h>
#include <time.h>
#include <cairo.h>
#include <glib.h>
#include <GL/gl.h>
#include <eagle.h>
#include "wayland-client.h"
#include "wayland-glib.h"
#include "gears.h"
#include "cairo-util.h"
static const char gem_device[] = "/dev/dri/card0";
static const char socket_name[] = "\0wayland";
static void die(const char *msg)
{
fprintf(stderr, "%s", msg);
exit(EXIT_FAILURE);
}
struct window {
struct wl_surface *surface;
int x, y, width, height;
int drag_x, drag_y, last_x, last_y;
int state;
uint32_t name;
int fd;
int redraw_scheduled;
cairo_pattern_t *background;
struct buffer *buffer;
struct buffer *egl_buffer;
GLfloat gears_angle;
struct gears *gears;
EGLDisplay display;
EGLContext context;
EGLConfig config;
EGLSurface egl_surface;
};
static void
rounded_rect(cairo_t *cr, int x0, int y0, int x1, int y1, int radius)
{
cairo_move_to(cr, x0, y0 + radius);
cairo_arc(cr, x0 + radius, y0 + radius, radius, M_PI, 3 * M_PI / 2);
cairo_line_to(cr, x1 - radius, y0);
cairo_arc(cr, x1 - radius, y0 + radius, radius, 3 * M_PI / 2, 2 * M_PI);
cairo_line_to(cr, x1, y1 - radius);
cairo_arc(cr, x1 - radius, y1 - radius, radius, 0, M_PI / 2);
cairo_line_to(cr, x0 + radius, y1);
cairo_arc(cr, x0 + radius, y1 - radius, radius, M_PI / 2, M_PI);
cairo_close_path(cr);
}
static gboolean
draw_window(void *data)
{
struct window *window = data;
cairo_surface_t *surface;
cairo_t *cr;
int border = 2, radius = 5;
cairo_text_extents_t extents;
cairo_pattern_t *gradient, *outline, *bright, *dim;
struct buffer *buffer;
const static char title[] = "Wayland First Post";
surface = cairo_image_surface_create(CAIRO_FORMAT_RGB24,
window->width + 32, window->height + 32);
outline = cairo_pattern_create_rgb(0.1, 0.1, 0.1);
bright = cairo_pattern_create_rgb(0.6, 0.6, 0.6);
dim = cairo_pattern_create_rgb(0.4, 0.4, 0.4);
cr = cairo_create(surface);
cairo_translate(cr, 16 + 5, 16 + 3);
cairo_set_line_width (cr, border);
cairo_set_source_rgba(cr, 0, 0, 0, 0.5);
rounded_rect(cr, 1, 1, window->width - 1, window->height - 1, radius);
cairo_stroke_preserve(cr);
cairo_fill(cr);
blur_surface(surface);
cairo_translate(cr, -5, -3);
cairo_set_line_width (cr, border);
rounded_rect(cr, 1, 1, window->width - 1, window->height - 1, radius);
cairo_set_source(cr, outline);
cairo_stroke(cr);
rounded_rect(cr, 2, 2, window->width - 2, window->height - 2, radius);
cairo_set_source(cr, bright);
cairo_stroke(cr);
rounded_rect(cr, 3, 3, window->width - 2, window->height - 2, radius);
cairo_set_source(cr, dim);
cairo_stroke(cr);
rounded_rect(cr, 2, 2, window->width - 2, window->height - 2, radius);
gradient = cairo_pattern_create_linear (0, 0, 0, window->height);
cairo_pattern_add_color_stop_rgb(gradient, 0, 0.4, 0.4, 0.4);
cairo_pattern_add_color_stop_rgb(gradient, 0.2, 0.7, 0.7, 0.7);
cairo_set_source(cr, gradient);
cairo_fill(cr);
cairo_pattern_destroy(gradient);
cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
cairo_move_to(cr, 10, 50);
cairo_line_to(cr, window->width - 10, 50);
cairo_line_to(cr, window->width - 10, window->height - 10);
cairo_line_to(cr, 10, window->height - 10);
cairo_close_path(cr);
cairo_set_source(cr, dim);
cairo_stroke(cr);
cairo_move_to(cr, 11, 51);
cairo_line_to(cr, window->width - 10, 51);
cairo_line_to(cr, window->width - 10, window->height - 10);
cairo_line_to(cr, 11, window->height - 10);
cairo_close_path(cr);
cairo_set_source(cr, bright);
cairo_stroke(cr);
cairo_move_to(cr, 10, 50);
cairo_line_to(cr, window->width - 10, 50);
cairo_line_to(cr, window->width - 10, window->height - 10);
cairo_line_to(cr, 10, window->height - 10);
cairo_close_path(cr);
cairo_set_source_rgba(cr, 0, 0, 0, 0.9);
cairo_fill(cr);
cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
cairo_set_font_size(cr, 14);
cairo_text_extents(cr, title, &extents);
cairo_move_to(cr, (window->width - extents.width) / 2, 10 - extents.y_bearing);
cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
cairo_set_line_width (cr, 4);
cairo_text_path(cr, title);
cairo_set_source_rgb(cr, 0.1, 0.1, 0.1);
cairo_stroke_preserve(cr);
cairo_set_source_rgb(cr, 1, 1, 1);
cairo_fill(cr);
cairo_destroy(cr);
if (window->buffer != NULL)
buffer_destroy(window->buffer, window->fd);
buffer = buffer_create_from_cairo_surface(window->fd, surface);
window->buffer = buffer;
cairo_surface_destroy(surface);
wl_surface_attach(window->surface, buffer->name,
buffer->width, buffer->height, buffer->stride);
wl_surface_map(window->surface,
window->x, window->y,
buffer->width, buffer->height);
/* FIXME: Free window->buffer when we receive the ack event. */
buffer = window->egl_buffer;
gears_draw(window->gears, window->gears_angle);
wl_surface_copy(window->surface,
(window->width - 300) / 2,
50 + (window->height - 50 - 300) / 2,
buffer->name, buffer->stride,
0, 0, buffer->width, buffer->height);
window->redraw_scheduled = 0;
return FALSE;
}
enum window_state {
WINDOW_STABLE,
WINDOW_MOVING,
WINDOW_RESIZING_UPPER_LEFT,
WINDOW_RESIZING_UPPER_RIGHT,
WINDOW_RESIZING_LOWER_LEFT,
WINDOW_RESIZING_LOWER_RIGHT
};
enum location {
LOCATION_INTERIOR,
LOCATION_UPPER_LEFT,
LOCATION_UPPER_RIGHT,
LOCATION_LOWER_LEFT,
LOCATION_LOWER_RIGHT,
LOCATION_OUTSIDE
};
static void
event_handler(struct wl_display *display,
uint32_t opcode, uint32_t arg1, uint32_t arg2, void *data)
{
struct window *window = data;
int location, border = 4;
int grip_size = 16;
if (opcode == 0) {
window->last_x = arg1;
window->last_y = arg2;
switch (window->state) {
case WINDOW_MOVING:
window->x = window->drag_x + arg1;
window->y = window->drag_y + arg2;
wl_surface_map(window->surface, window->x, window->y,
window->buffer->width, window->buffer->height);
break;
case WINDOW_RESIZING_LOWER_RIGHT:
window->width = window->drag_x + arg1;
window->height = window->drag_y + arg2;
if (window->width < 400)
window->width = 400;
if (window->height < 400)
window->height = 400;
if (!window->redraw_scheduled) {
window->redraw_scheduled = 1;
g_idle_add(draw_window, window);
}
break;
}
}
if (window->x + window->width - grip_size <= window->last_x &&
window->last_x < window->x + window->width &&
window->y + window->height - grip_size <= window->last_y &&
window->last_y < window->y + window->height) {
location = LOCATION_LOWER_RIGHT;
} else if (window->x + border <= window->last_x &&
window->last_x < window->x + window->width - border &&
window->y + border <= window->last_y &&
window->last_y < window->y + window->height - border) {
location = LOCATION_INTERIOR;
} else {
location = LOCATION_OUTSIDE;
}
if (opcode == 1 && arg1 == 0 && arg2 == 1) {
switch (location) {
case LOCATION_INTERIOR:
window->drag_x = window->x - window->last_x;
window->drag_y = window->y - window->last_y;
window->state = WINDOW_MOVING;
break;
case LOCATION_LOWER_RIGHT:
window->drag_x = window->width - window->last_x;
window->drag_y = window->height - window->last_y;
window->state = WINDOW_RESIZING_LOWER_RIGHT;
break;
default:
window->state = WINDOW_STABLE;
break;
}
} else if (opcode == 1 && arg1 == 0 && arg2 == 0) {
window->state = WINDOW_STABLE;
}
}
static struct window *
window_create(struct wl_display *display, int fd)
{
EGLint major, minor, count;
EGLConfig configs[64];
struct window *window;
struct buffer *buffer;
const GLfloat red = 0, green = 0, blue = 0, alpha = 0.9;
window = malloc(sizeof *window);
if (window == NULL)
return NULL;
memset(window, 0, sizeof *window);
window->surface = wl_display_create_surface(display);
window->x = 200;
window->y = 200;
window->width = 450;
window->height = 500;
window->state = WINDOW_STABLE;
window->fd = fd;
window->background = cairo_pattern_create_rgba (red, green, blue, alpha);
window->display = eglCreateDisplayNative("/dev/dri/card0", "i965");
if (window->display == NULL)
die("failed to create display\n");
if (!eglInitialize(window->display, &major, &minor))
die("failed to initialize display\n");
if (!eglGetConfigs(window->display, configs, 64, &count))
die("failed to get configs\n");
window->config = configs[24];
window->context = eglCreateContext(window->display, window->config, NULL, NULL);
if (window->context == NULL)
die("failed to create context\n");
/* FIXME: We need to get the stride right here in a chipset
* independent way. Maybe do it in name_cairo_surface(). */
buffer = buffer_create(window->fd, 300, 300, (300 * 4 + 15) & ~15);
window->egl_buffer = buffer;
window->egl_surface = eglCreateSurfaceForName(window->display,
window->config, buffer->name,
buffer->width, buffer->height,
buffer->stride, NULL);
if (window->egl_surface == NULL)
die("failed to create egl surface\n");
if (!eglMakeCurrent(window->display,
window->egl_surface, window->egl_surface, window->context))
die("failed to make context current\n");
glViewport(0, 0, 300, 300);
window->gears = gears_create(red, green, blue, alpha);
window->gears_angle = 0.0;
draw_window(window);
return window;
}
static gboolean
draw(gpointer data)
{
struct window *window = data;
struct buffer *buffer;
if (!window->redraw_scheduled) {
gears_draw(window->gears, window->gears_angle);
buffer = window->egl_buffer;
wl_surface_copy(window->surface,
(window->width - 300) / 2,
50 + (window->height - 50 - 300) / 2,
buffer->name, buffer->stride,
0, 0, buffer->width, buffer->height);
}
window->gears_angle += 1;
return TRUE;
}
int main(int argc, char *argv[])
{
struct wl_display *display;
int fd;
struct window *window;
GMainLoop *loop;
GSource *source;
fd = open(gem_device, O_RDWR);
if (fd < 0) {
fprintf(stderr, "drm open failed: %m\n");
return -1;
}
display = wl_display_create(socket_name);
if (display == NULL) {
fprintf(stderr, "failed to create display: %m\n");
return -1;
}
loop = g_main_loop_new(NULL, FALSE);
source = wayland_source_new(display);
g_source_attach(source, NULL);
window = window_create(display, fd);
draw_window(window);
wl_display_set_event_handler(display, event_handler, window);
g_timeout_add(20, draw, window);
g_main_loop_run(loop);
return 0;
}