window: Add a cheesy parser for ini-files, use it in desktop-shell

clients/Makefile.am

@@ -38,7 +38,8 @@ libtoytoolkit_a_SOURCES =			\
 	window.c				\
 	window.h				\
 	cairo-util.c				\
-	cairo-util.h
+	cairo-util.h				\
+	config.c
 
 toolkit_libs =					\
 	libtoytoolkit.a				\

clients/config.c

@@ -0,0 +1,137 @@
+/*
+ * Copyright © 2011 Intel Corporation
+ *
+ * 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 <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <assert.h>
+
+#include <window.h>
+
+static int
+handle_key(const struct config_key *key, const char *value)
+{
+	char *end, *s;
+	int i, len;
+	
+	switch (key->type) {
+	case CONFIG_KEY_INTEGER:
+		i = strtol(value, &end, 0);
+		if (*end != '\n') {
+			fprintf(stderr, "invalid integer: %s\n", value);
+			return -1;
+		}
+		*(int *)key->data = i;
+		return 0;
+
+	case CONFIG_KEY_STRING:
+		len = strlen(value);
+		s = malloc(len);
+		if (s == NULL)
+			return -1;
+		memcpy(s, value, len - 1);
+		s[len - 1] = '\0';
+		*(char **)key->data = s;
+		return 0;
+
+	case CONFIG_KEY_BOOL:
+		if (strcmp(value, "false") == 0)
+			*(int *)key->data = 0;
+		else if (strcmp(value, "true") == 0)
+			*(int *)key->data = 1;
+		else {
+			fprintf(stderr, "invalid bool: %s\n", value);
+			return -1;
+		}
+		return 0;
+
+	default:
+		assert(0);
+		break;
+	}
+}
+
+int
+parse_config_file(const char *path,
+		  const struct config_section *sections, int num_sections,
+		  void *data)
+{
+	FILE *fp;
+	char line[512], *p;
+	const struct config_section *current = NULL;
+	int i;
+
+	fp = fopen(path, "r");
+	if (fp == NULL) {
+		fprintf(stderr, "couldn't open %s\n", path);
+		return -1;
+	}
+
+	while (fgets(line, sizeof line, fp)) {
+		if (line[0] == '#' || line[0] == '\n') {
+			continue;
+		} if (line[0] == '[') {
+			p = strchr(&line[1], ']');
+			if (!p || p[1] != '\n') {
+				fprintf(stderr, "malformed "
+					"section header: %s\n", line);
+				fclose(fp);
+				return -1;
+			}
+			if (current && current->done)
+				current->done(data);
+			p[0] = '\0';
+			for (i = 0; i < num_sections; i++) {
+				if (strcmp(sections[i].name, &line[1]) == 0) {
+					current = &sections[i];
+					break;
+				}
+			}
+			if (i == num_sections)
+				current = NULL;
+		} else if (p = strchr(line, '='), p != NULL) {
+			if (current == NULL)
+				continue;
+			p[0] = '\0';
+			for (i = 0; i < current->num_keys; i++) {
+				if (strcmp(current->keys[i].name, line) == 0) {
+					if (handle_key(&current->keys[i], &p[1]) < 0) {
+						fclose(fp);
+						return -1;
+					}
+					break;
+				}
+			}
+		} else {
+			fprintf(stderr, "malformed config line: %s\n", line);
+			fclose(fp);
+			return -1;
+		}
+	}
+
+	if (current && current->done)
+		current->done(data);
+
+	fclose(fp);
+
+	return 0;
+}

clients/desktop-shell.c

@@ -58,6 +58,30 @@ struct panel_item {
 	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)
 {
@@ -137,6 +161,16 @@ panel_draw_item(struct item *item, void *data)
 	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)
 {
@@ -147,7 +181,7 @@ panel_redraw_handler(struct window *window, void *data)
 	surface = window_get_surface(window);
 	cr = cairo_create(surface);
 	cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
-	cairo_set_source_rgba(cr, 0.1, 0.1, 0.1, 0.9);
+	set_hex_color(cr, key_panel_color);
 	cairo_paint(cr);
 
 	cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
@@ -294,28 +328,26 @@ global_handler(struct wl_display *display, uint32_t id,
 	}
 }
 
-static const struct {
-	const char *icon;
-	const char *path;
-} launchers[] = {
-	{
-		"/usr/share/icons/gnome/24x24/apps/utilities-terminal.png",
-		"/usr/bin/gnome-terminal"
-	},
-	{
-		"/usr/share/icons/gnome/24x24/apps/utilities-terminal.png",
-		"./clients/terminal"
-	},
-	{
-		"/usr/share/icons/hicolor/24x24/apps/google-chrome.png",
-		"/usr/bin/google-chrome"
-	},
-};
+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;
-	int i;
 
 	desktop.display = display_create(&argc, &argv, NULL);
 	if (desktop.display == NULL) {
@@ -331,9 +363,11 @@ int main(int argc, char *argv[])
 
 	desktop.panel = panel_create(desktop.display);
 
-	for (i = 0; i < ARRAY_LENGTH(launchers); i++)
-		panel_add_item(desktop.panel,
-			       launchers[i].icon, launchers[i].path);
+	parse_config_file("wayland-desktop-shell.ini",
+			  config_sections, ARRAY_LENGTH(config_sections),
+			  &desktop);
+
+	printf("panel color: %08x\n", key_panel_color);
 
 	desktop_shell_set_panel(desktop.shell,
 				window_get_wl_surface(desktop.panel->window));
@@ -341,7 +375,7 @@ int main(int argc, char *argv[])
 	desktop.background = window_create(desktop.display, 0, 0);
 	window_set_decoration(desktop.background, 0);
 	window_set_custom(desktop.background);
-	desktop.background_path = argv[1];
+	desktop.background_path = key_background_image;
 	desktop_shell_set_background(desktop.shell,
 				     window_get_wl_surface(desktop.background));
 

clients/window.h

@@ -322,5 +322,28 @@ input_offers_mime_type(struct input *input, const char *type);
 void
 input_receive_mime_type(struct input *input, const char *type, int fd);
 
+enum {
+	CONFIG_KEY_INTEGER,
+	CONFIG_KEY_STRING,
+	CONFIG_KEY_BOOL
+};
+
+struct config_key {
+	const char *name;
+	int type;
+	void *data;
+};
+
+struct config_section {
+	const char *name;
+	const struct config_key *keys;
+	int num_keys;
+	void (*done)(void *data);
+};
+
+int
+parse_config_file(const char *path,
+		  const struct config_section *sections, int num_sections,
+		  void *data);
 
 #endif