Embed default icon, in case it is not found on the system (e.g. tint2 not installed, just compiled)

CMakeLists.txt

@@ -134,6 +134,7 @@ set( SOURCES src/config.c
              src/util/tracing.c
              src/mouse_actions.c
              src/drag_and_drop.c
+             src/default_icon.c
              src/clock/clock.c
              src/systray/systraybar.c
              src/launcher/launcher.c

src/default_icon.h

@@ -0,0 +1,10 @@
+#ifndef default_icon_h
+#define default_icon_h
+
+#include <Imlib2.h>
+
+extern int default_icon_width;
+extern int default_icon_height;
+extern DATA32 default_icon_data[];
+
+#endif

src/init.c

@@ -12,6 +12,7 @@
 #include <X11/extensions/XShm.h>
 
 #include "config.h"
+#include "default_icon.h"
 #include "drag_and_drop.h"
 #include "fps_distribution.h"
 #include "panel.h"
@@ -55,6 +56,9 @@ void handle_cli_arguments(int argc, char **argv)
         } else if (strcmp(argv[i], "--test-verbose") == 0) {
             run_all_tests(true);
             exit(0);
+        } else if (strcmp(argv[i], "--dump-image-data") == 0) {
+            dump_image_data(argv[i+1], argv[i+2]);
+            exit(0);
         } else if (strcmp(argv[i], "-c") == 0) {
             if (i + 1 < argc) {
                 i++;
@@ -165,6 +169,22 @@ void create_default_elements()
     default_panel();
 }
 
+void load_default_task_icon()
+{
+    const gchar *const *data_dirs = g_get_system_data_dirs();
+    for (int i = 0; data_dirs[i] != NULL; i++) {
+        gchar *path = g_build_filename(data_dirs[i], "tint2", "default_icon.png", NULL);
+        if (g_file_test(path, G_FILE_TEST_EXISTS))
+            default_icon = load_image(path, TRUE);
+        g_free(path);
+    }
+    if (!default_icon) {
+        default_icon = imlib_create_image_using_data(default_icon_width,
+                                                     default_icon_height,
+                                                     default_icon_data);
+    }
+}
+
 void init_post_config()
 {
     server_init_visual();
@@ -175,20 +195,7 @@ void init_post_config()
     imlib_context_set_colormap(server.colormap);
 
     init_signals_postconfig();
-
-    // load default icon
-    const gchar *const *data_dirs = g_get_system_data_dirs();
-    for (int i = 0; data_dirs[i] != NULL; i++) {
-        gchar *path = g_build_filename(data_dirs[i], "tint2", "default_icon.png", NULL);
-        if (g_file_test(path, G_FILE_TEST_EXISTS))
-            default_icon = load_image(path, TRUE);
-        g_free(path);
-    }
-    if (!default_icon) {
-        fprintf(stderr,
-                RED "Could not load default_icon.png. Please check that tint2 has been installed correctly!" RESET
-                    "\n");
-    }
+    load_default_task_icon();
 
     XSync(server.display, False);
 }

src/util/common.c

@@ -1114,3 +1114,63 @@ void adjust_color(Color *color, int alpha, int saturation, int brightness)
     color->rgb[1] = g / 255.;
     color->rgb[2] = b / 255.;
 }
+
+void dump_image_data(const char *file_name, const char *name)
+{
+    Imlib_Image image = load_image(file_name, false);
+    if (!image) {
+        fprintf(stderr, "tint2: Could not load image from file\n");
+        return;
+    }
+
+    gchar *header_name = g_strdup_printf("%s.h", name);
+    gchar *guard = g_strdup_printf("%s_h", name);
+    FILE *header = fopen(header_name, "wt");
+    fprintf(header,
+            "#ifndef %s\n"
+            "#define %s\n"
+            "\n"
+            "#include <Imlib2.h>\n"
+            "\n"
+            "extern int %s_width;\n"
+            "extern int %s_height;\n"
+            "extern DATA32 %s_data[];\n"
+            "\n"
+            "#endif\n",
+            guard,
+            guard,
+            name,
+            name,
+            name);
+    fclose(header);
+    g_free(guard);
+    g_free(header_name);
+
+    imlib_context_set_image(image);
+
+    gchar *source_name = g_strdup_printf("%s.c", name);
+    FILE *source = fopen(source_name, "wt");
+    fprintf(source,
+            "#include <%s.h>\n"
+            "\n"
+            "int %s_width = %d;\n"
+            "int %s_height = %d;\n"
+            "DATA32 %s_data[] = {",
+            name,
+            name,
+            imlib_image_get_width(),
+            name,
+            imlib_image_get_height(),
+            name);
+
+    size_t size = (size_t)imlib_image_get_width() * (size_t)imlib_image_get_height();
+    DATA32 *data = imlib_image_get_data_for_reading_only();
+    for (size_t i = 0; i < size; i++) {
+        fprintf(source, "%s%u", i == 0 ? "" : ", ", data[i]);
+    }
+    fprintf(source, "};\n");
+    fclose(source);
+    g_free(source_name);
+
+    imlib_free_image();
+}

src/util/common.h

@@ -149,6 +149,8 @@ GString *tint2_g_string_replace(GString *s, const char *from, const char *to);
 
 void get_image_mean_color(const Imlib_Image image, Color *mean_color);
 
+void dump_image_data(const char *file_name, const char *name);
+
 #define free_and_null(p) \
     {                    \
         free(p);         \

tint2.files

@@ -20,6 +20,9 @@ src/battery/battery.c
 src/battery/battery.h
 src/clock/clock.c
 src/clock/clock.h
+src/default_icon.c
+src/default_icon.c
+src/default_icon.h
 src/execplugin/execplugin.c
 src/execplugin/execplugin.h
 src/launcher/launcher.c