PoC

cabi_example/main.c

@@ -0,0 +1,39 @@
+#include <gtk/gtk.h>
+#include <stdint.h>
+
+typedef struct {
+  GtkContainer* root;
+  GtkBox* container;
+  GtkLabel* label;
+  GtkButton* button;
+} Instance;
+
+//
+const size_t wbcabi_version = 1;
+
+void onclicked() { printf("You clicked the button\n"); }
+
+void* wbcabi_init(GtkContainer* root) {
+  // Allocate the instance object
+  Instance* inst = malloc(sizeof(Instance));
+  inst->root = root;
+
+  // Add a container for displaying the next widgets
+  inst->container = GTK_BOX(gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 5));
+  gtk_container_add(GTK_CONTAINER(inst->root), GTK_WIDGET(inst->container));
+
+  // Add a label
+  inst->label = GTK_LABEL(gtk_label_new("This is a button:"));
+  gtk_container_add(GTK_CONTAINER(inst->container), GTK_WIDGET(inst->label));
+
+  // Add a button
+  inst->button = GTK_BUTTON(gtk_button_new_with_label("click me !"));
+  g_signal_connect(inst->button, "clicked", G_CALLBACK(onclicked), NULL);
+  gtk_container_add(GTK_CONTAINER(inst->container), GTK_WIDGET(inst->button));
+
+  // Return instance object
+  return inst;
+}
+void wbcabi_deinit(void* instance) { free(instance); }
+
+char* wbcabi_last_error_str(void* instance) { return NULL; }

cabi_example/meson.build

@@ -0,0 +1,21 @@
+project(
+    'waybar_cabi_c_example', 'c',
+    version: '0.1.0',
+    license: 'MIT',
+)
+
+compiler = meson.get_compiler('c')
+
+
+shared_library('waybar_cabi_c_example',
+    [
+        'main.c',
+    ],
+    dependencies: [
+    	dependency('gtk+-3.0', version : ['>=3.22.0'])
+    ]
+    # include_directories: include_directories(['../../../include']),
+    # dependencies: [],
+    # install: true,
+    # install_dir: 'plugins',
+)