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weston/clients/desktop-shell.c

389 lines
9.8 KiB

/*
* Copyright © 2011 Kristian Høgsberg
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that copyright
* notice and this permission notice appear in supporting documentation, and
* that the name of the copyright holders not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. The copyright holders make no representations
* about the suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
* OF THIS SOFTWARE.
*/
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <math.h>
#include <cairo.h>
#include <sys/wait.h>
#include <linux/input.h>
#include "wayland-client.h"
#include "cairo-util.h"
#include "window.h"
#include <desktop-shell-client-protocol.h>
struct desktop {
struct display *display;
struct desktop_shell *shell;
struct panel *panel;
struct window *background;
const char *background_path;
};
struct panel {
struct window *window;
struct window *menu;
};
struct panel_item {
struct item *item;
struct panel *panel;
cairo_surface_t *icon;
int pressed;
const char *path;
};
static char *key_background_image;
static uint32_t key_panel_color;
static char *key_launcher_icon;
static char *key_launcher_path;
static void launcher_section_done(void *data);
static const struct config_key shell_config_keys[] = {
{ "background-image", CONFIG_KEY_STRING, &key_background_image },
{ "panel-color", CONFIG_KEY_INTEGER, &key_panel_color },
};
static const struct config_key launcher_config_keys[] = {
{ "icon", CONFIG_KEY_STRING, &key_launcher_icon },
{ "path", CONFIG_KEY_STRING, &key_launcher_path },
};
static const struct config_section config_sections[] = {
{ "wayland-desktop-shell",
shell_config_keys, ARRAY_LENGTH(shell_config_keys) },
{ "launcher",
launcher_config_keys, ARRAY_LENGTH(launcher_config_keys),
launcher_section_done }
};
static void
sigchild_handler(int s)
{
int status;
pid_t pid;
while (pid = waitpid(-1, &status, WNOHANG), pid > 0)
fprintf(stderr, "child %d exited\n", pid);
}
static void
show_menu(struct panel *panel, struct input *input)
{
int32_t x, y, width = 200, height = 200;
struct display *display;
input_get_position(input, &x, &y);
display = window_get_display(panel->window);
panel->menu = window_create_transient(display, panel->window,
x - 10, y - 10, width, height);
window_draw(panel->menu);
window_flush(panel->menu);
}
static void
panel_activate_item(struct panel *panel, struct panel_item *item)
{
pid_t pid;
pid = fork();
if (pid < 0) {
fprintf(stderr, "fork failed: %m\n");
return;
}
if (pid)
return;
if (execl(item->path, item->path, NULL) < 0) {
fprintf(stderr, "execl failed: %m\n");
exit(1);
}
}
static void
panel_draw_item(struct item *item, void *data)
{
cairo_t *cr = data;
struct panel_item *pi;
int x, y, width, height;
double dx, dy;
pi = item_get_user_data(item);
width = cairo_image_surface_get_width(pi->icon);
height = cairo_image_surface_get_height(pi->icon);
x = 0;
y = -height / 2;
if (pi->pressed) {
x++;
y++;
}
dx = x;
dy = y;
cairo_user_to_device(cr, &dx, &dy);
item_set_allocation(item, dx, dy, width, height);
cairo_set_source_surface(cr, pi->icon, x, y);
cairo_paint(cr);
if (window_get_focus_item(pi->panel->window) == item) {
cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 0.4);
cairo_mask_surface(cr, pi->icon, x, y);
}
cairo_translate(cr, width + 10, 0);
}
static void
set_hex_color(cairo_t *cr, uint32_t color)
{
cairo_set_source_rgba(cr,
((color >> 16) & 0xff) / 255.0,
((color >> 8) & 0xff) / 255.0,
((color >> 0) & 0xff) / 255.0,
((color >> 24) & 0xff) / 255.0);
}
static void
panel_redraw_handler(struct window *window, void *data)
{
cairo_surface_t *surface;
cairo_t *cr;
window_draw(window);
surface = window_get_surface(window);
cr = cairo_create(surface);
cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
set_hex_color(cr, key_panel_color);
cairo_paint(cr);
cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
cairo_translate(cr, 10, 32 / 2);
window_for_each_item(window, panel_draw_item, cr);
cairo_destroy(cr);
cairo_surface_destroy(surface);
window_flush(window);
}
static void
panel_item_focus_handler(struct window *window,
struct item *focus, void *data)
{
window_schedule_redraw(window);
}
static void
panel_button_handler(struct window *window,
struct input *input, uint32_t time,
int button, int state, void *data)
{
struct panel *panel = data;
struct panel_item *pi;
struct item *focus;
focus = window_get_focus_item(panel->window);
if (focus && button == BTN_LEFT) {
pi = item_get_user_data(focus);
window_schedule_redraw(panel->window);
if (state == 0)
panel_activate_item(panel, pi);
} else if (button == BTN_RIGHT) {
if (state)
show_menu(panel, input);
else
window_destroy(panel->menu);
}
}
static struct panel *
panel_create(struct display *display)
{
struct panel *panel;
panel = malloc(sizeof *panel);
memset(panel, 0, sizeof *panel);
panel->window = window_create(display, 0, 0);
window_set_title(panel->window, "panel");
window_set_decoration(panel->window, 0);
window_set_redraw_handler(panel->window, panel_redraw_handler);
window_set_custom(panel->window);
window_set_user_data(panel->window, panel);
window_set_button_handler(panel->window, panel_button_handler);
window_set_item_focus_handler(panel->window, panel_item_focus_handler);
return panel;
}
static void
panel_add_item(struct panel *panel, const char *icon, const char *path)
{
struct panel_item *item;
item = malloc(sizeof *item);
memset(item, 0, sizeof *item);
item->icon = cairo_image_surface_create_from_png(icon);
item->path = strdup(path);
item->panel = panel;
window_add_item(panel->window, item);
}
static void
background_draw(struct window *window, int width, int height, const char *path)
{
cairo_surface_t *surface, *image;
cairo_pattern_t *pattern;
cairo_matrix_t matrix;
cairo_t *cr;
double sx, sy;
window_set_child_size(window, width, height);
window_draw(window);
surface = window_get_surface(window);
cr = cairo_create(surface);
cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
cairo_set_source_rgba(cr, 0.0, 0.0, 0.2, 1.0);
cairo_paint(cr);
if (path) {
image = load_jpeg(path);
pattern = cairo_pattern_create_for_surface(image);
sx = (double) cairo_image_surface_get_width(image) / width;
sy = (double) cairo_image_surface_get_height(image) / height;
cairo_matrix_init_scale(&matrix, sx, sy);
cairo_pattern_set_matrix(pattern, &matrix);
cairo_set_source(cr, pattern);
cairo_pattern_destroy (pattern);
cairo_paint(cr);
cairo_surface_destroy(image);
}
cairo_destroy(cr);
cairo_surface_destroy(surface);
window_flush(window);
}
static void
desktop_shell_configure(void *data,
struct desktop_shell *desktop_shell,
uint32_t time, uint32_t edges,
struct wl_surface *surface,
int32_t width, int32_t height)
{
struct desktop *desktop = data;
if (surface == window_get_wl_surface(desktop->panel->window)) {
window_set_child_size(desktop->panel->window, width, 32);
window_schedule_redraw(desktop->panel->window);
} else if (surface == window_get_wl_surface(desktop->background)) {
background_draw(desktop->background,
width, height, desktop->background_path);
}
}
static const struct desktop_shell_listener listener = {
desktop_shell_configure
};
static void
global_handler(struct wl_display *display, uint32_t id,
const char *interface, uint32_t version, void *data)
{
struct desktop *desktop = data;
if (!strcmp(interface, "desktop_shell")) {
desktop->shell =
wl_display_bind(display, id, &desktop_shell_interface);
desktop_shell_add_listener(desktop->shell, &listener, desktop);
}
}
static void
launcher_section_done(void *data)
{
struct desktop *desktop = data;
if (key_launcher_icon == NULL || key_launcher_path == NULL) {
fprintf(stderr, "invalid launcher section\n");
return;
}
panel_add_item(desktop->panel, key_launcher_icon, key_launcher_path);
free(key_launcher_icon);
key_launcher_icon = NULL;
free(key_launcher_path);
key_launcher_path = NULL;
}
int main(int argc, char *argv[])
{
struct desktop desktop;
char *config_file;
desktop.display = display_create(&argc, &argv, NULL);
if (desktop.display == NULL) {
fprintf(stderr, "failed to create display: %m\n");
return -1;
}
/* The fd is our private, do not confuse our children with it. */
unsetenv("WAYLAND_SOCKET");
wl_display_add_global_listener(display_get_display(desktop.display),
global_handler, &desktop);
desktop.panel = panel_create(desktop.display);
config_file = config_file_path("wayland-desktop-shell.ini");
parse_config_file(config_file,
config_sections, ARRAY_LENGTH(config_sections),
&desktop);
free(config_file);
desktop_shell_set_panel(desktop.shell,
window_get_wl_surface(desktop.panel->window));
desktop.background = window_create(desktop.display, 0, 0);
window_set_decoration(desktop.background, 0);
window_set_custom(desktop.background);
desktop.background_path = key_background_image;
desktop_shell_set_background(desktop.shell,
window_get_wl_surface(desktop.background));
signal(SIGCHLD, sigchild_handler);
display_run(desktop.display);
return 0;
}