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/*
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* Copyright © 2011 Kristian Høgsberg
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that copyright
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* notice and this permission notice appear in supporting documentation, and
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* that the name of the copyright holders not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. The copyright holders make no representations
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* about the suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*/
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <math.h>
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#include <cairo.h>
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#include <sys/wait.h>
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#include <linux/input.h>
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#include "wayland-client.h"
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#include "window.h"
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#include <desktop-shell-client-protocol.h>
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struct desktop {
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struct display *display;
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struct desktop_shell *shell;
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struct panel *panel;
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struct window *background;
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const char *background_path;
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};
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struct panel {
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struct window *window;
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};
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struct panel_item {
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struct item *item;
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struct panel *panel;
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cairo_surface_t *icon;
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int pressed;
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const char *path;
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};
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static void
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sigchild_handler(int s)
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{
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int status;
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pid_t pid;
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while (pid = waitpid(-1, &status, WNOHANG), pid > 0)
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fprintf(stderr, "child %d exited\n", pid);
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}
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static void
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panel_activate_item(struct panel *panel, struct panel_item *item)
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{
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pid_t pid;
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pid = fork();
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if (pid < 0) {
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fprintf(stderr, "fork failed: %m\n");
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return;
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}
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if (pid)
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return;
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if (execl(item->path, item->path, NULL) < 0) {
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fprintf(stderr, "execl failed: %m\n");
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exit(1);
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}
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}
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static void
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panel_draw_item(struct item *item, void *data)
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{
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cairo_t *cr = data;
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struct panel_item *pi;
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int x, y, width, height;
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double dx, dy;
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pi = item_get_user_data(item);
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width = cairo_image_surface_get_width(pi->icon);
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height = cairo_image_surface_get_height(pi->icon);
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x = 0;
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y = -height / 2;
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if (pi->pressed) {
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x++;
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y++;
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}
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dx = x;
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dy = y;
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cairo_user_to_device(cr, &dx, &dy);
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item_set_allocation(item, dx, dy, width, height);
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cairo_set_source_surface(cr, pi->icon, x, y);
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cairo_paint(cr);
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if (window_get_focus_item(pi->panel->window) == item) {
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cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 0.4);
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cairo_mask_surface(cr, pi->icon, x, y);
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}
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cairo_translate(cr, width + 10, 0);
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}
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static void
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panel_redraw_handler(struct window *window, void *data)
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{
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cairo_surface_t *surface;
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cairo_t *cr;
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window_draw(window);
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surface = window_get_surface(window);
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cr = cairo_create(surface);
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cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
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cairo_set_source_rgba(cr, 0.1, 0.1, 0.1, 0.9);
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cairo_paint(cr);
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cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
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cairo_translate(cr, 10, 32 / 2);
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window_for_each_item(window, panel_draw_item, cr);
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cairo_destroy(cr);
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cairo_surface_destroy(surface);
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window_flush(window);
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}
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static void
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panel_item_focus_handler(struct window *window,
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struct item *focus, void *data)
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{
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window_schedule_redraw(window);
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}
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static void
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panel_button_handler(struct window *window,
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struct input *input, uint32_t time,
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int button, int state, void *data)
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{
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struct panel *panel = data;
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struct panel_item *pi;
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struct item *focus;
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focus = window_get_focus_item(panel->window);
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if (focus && button == BTN_LEFT) {
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pi = item_get_user_data(focus);
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window_schedule_redraw(panel->window);
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if (state == 0)
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panel_activate_item(panel, pi);
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}
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}
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static struct panel *
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panel_create(struct display *display)
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{
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struct panel *panel;
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panel = malloc(sizeof *panel);
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memset(panel, 0, sizeof *panel);
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panel->window = window_create(display, 0, 0);
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window_set_title(panel->window, "panel");
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window_set_decoration(panel->window, 0);
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window_set_redraw_handler(panel->window, panel_redraw_handler);
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window_set_custom(panel->window);
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window_set_user_data(panel->window, panel);
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window_set_button_handler(panel->window, panel_button_handler);
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window_set_item_focus_handler(panel->window, panel_item_focus_handler);
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return panel;
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}
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static void
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panel_add_item(struct panel *panel, const char *icon, const char *path)
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{
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struct panel_item *item;
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item = malloc(sizeof *item);
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memset(item, 0, sizeof *item);
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item->icon = cairo_image_surface_create_from_png(icon);
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item->path = strdup(path);
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item->panel = panel;
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window_add_item(panel->window, item);
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}
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static void
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background_draw(struct window *window, int width, int height, const char *path)
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{
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cairo_surface_t *surface, *image;
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cairo_pattern_t *pattern;
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cairo_matrix_t matrix;
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cairo_t *cr;
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double sx, sy;
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window_set_child_size(window, width, height);
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window_draw(window);
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surface = window_get_surface(window);
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cr = cairo_create(surface);
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cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
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cairo_set_source_rgba(cr, 0.0, 0.0, 0.2, 1.0);
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cairo_paint(cr);
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if (path) {
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image = cairo_image_surface_create_from_png(path);
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pattern = cairo_pattern_create_for_surface(image);
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sx = (double) cairo_image_surface_get_width(image) / width;
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sy = (double) cairo_image_surface_get_height(image) / height;
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cairo_matrix_init_scale(&matrix, sx, sy);
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cairo_pattern_set_matrix(pattern, &matrix);
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cairo_set_source(cr, pattern);
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cairo_pattern_destroy (pattern);
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cairo_paint(cr);
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}
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cairo_destroy(cr);
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cairo_surface_destroy(surface);
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window_flush(window);
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}
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static void
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desktop_shell_configure(void *data,
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struct desktop_shell *desktop_shell,
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uint32_t time, uint32_t edges,
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struct wl_surface *surface,
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int32_t width, int32_t height)
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{
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struct desktop *desktop = data;
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if (surface == window_get_wl_surface(desktop->panel->window)) {
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window_set_child_size(desktop->panel->window, width, 32);
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window_schedule_redraw(desktop->panel->window);
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} else if (surface == window_get_wl_surface(desktop->background)) {
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background_draw(desktop->background,
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width, height, desktop->background_path);
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}
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}
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static const struct desktop_shell_listener listener = {
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desktop_shell_configure
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};
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static void
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global_handler(struct wl_display *display, uint32_t id,
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const char *interface, uint32_t version, void *data)
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{
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struct desktop *desktop = data;
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if (!strcmp(interface, "desktop_shell")) {
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desktop->shell =
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wl_display_bind(display, id, &desktop_shell_interface);
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desktop_shell_add_listener(desktop->shell, &listener, desktop);
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}
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}
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static const struct {
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const char *icon;
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const char *path;
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} launchers[] = {
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{
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"/usr/share/icons/gnome/24x24/apps/utilities-terminal.png",
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"/usr/bin/gnome-terminal"
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},
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{
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"/usr/share/icons/gnome/24x24/apps/utilities-terminal.png",
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"./clients/terminal"
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},
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{
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"/usr/share/icons/hicolor/24x24/apps/google-chrome.png",
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"/usr/bin/google-chrome"
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},
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};
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int main(int argc, char *argv[])
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{
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struct desktop desktop;
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int i;
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desktop.display = display_create(&argc, &argv, NULL);
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if (desktop.display == NULL) {
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fprintf(stderr, "failed to create display: %m\n");
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return -1;
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}
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wl_display_add_global_listener(display_get_display(desktop.display),
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global_handler, &desktop);
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desktop.panel = panel_create(desktop.display);
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for (i = 0; i < ARRAY_LENGTH(launchers); i++)
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panel_add_item(desktop.panel,
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launchers[i].icon, launchers[i].path);
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desktop_shell_set_panel(desktop.shell,
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window_get_wl_surface(desktop.panel->window));
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desktop.background = window_create(desktop.display, 0, 0);
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window_set_decoration(desktop.background, 0);
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window_set_custom(desktop.background);
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desktop.background_path = argv[1];
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desktop_shell_set_background(desktop.shell,
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window_get_wl_surface(desktop.background));
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signal(SIGCHLD, sigchild_handler);
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display_run(desktop.display);
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return 0;
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}
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