906170400e
Previously, string JSON values were special cased to be provided as bare strings, which means that CFFI modules have to either know what type each value is expected to be, or use a heuristic such as trying to decode and then treating the value as a string on failure. Instead, we can always return JSON, and let the downstream consumer handle deserialising the value into whatever type is expected. The new behaviour is gated on a new ABI version 2: modules built against version 1 will continue to get the old behaviour.
71 lines
2.3 KiB
C
71 lines
2.3 KiB
C
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#include "waybar_cffi_module.h"
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typedef struct {
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wbcffi_module* waybar_module;
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GtkBox* container;
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GtkButton* button;
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} ExampleMod;
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// This static variable is shared between all instances of this module
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static int instance_count = 0;
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void onclicked(GtkButton* button) {
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char text[256];
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snprintf(text, 256, "Dice throw result: %d", rand() % 6 + 1);
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gtk_button_set_label(button, text);
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}
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// You must
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const size_t wbcffi_version = 2;
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void* wbcffi_init(const wbcffi_init_info* init_info, const wbcffi_config_entry* config_entries,
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size_t config_entries_len) {
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printf("cffi_example: init config:\n");
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for (size_t i = 0; i < config_entries_len; i++) {
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printf(" %s = %s\n", config_entries[i].key, config_entries[i].value);
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}
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// Allocate the instance object
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ExampleMod* inst = malloc(sizeof(ExampleMod));
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inst->waybar_module = init_info->obj;
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GtkContainer* root = init_info->get_root_widget(init_info->obj);
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// Add a container for displaying the next widgets
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inst->container = GTK_BOX(gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 5));
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gtk_container_add(GTK_CONTAINER(root), GTK_WIDGET(inst->container));
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// Add a label
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GtkLabel* label = GTK_LABEL(gtk_label_new("[Example C FFI Module:"));
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gtk_container_add(GTK_CONTAINER(inst->container), GTK_WIDGET(label));
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// Add a button
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inst->button = GTK_BUTTON(gtk_button_new_with_label("click me !"));
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g_signal_connect(inst->button, "clicked", G_CALLBACK(onclicked), NULL);
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gtk_container_add(GTK_CONTAINER(inst->container), GTK_WIDGET(inst->button));
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// Add a label
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label = GTK_LABEL(gtk_label_new("]"));
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gtk_container_add(GTK_CONTAINER(inst->container), GTK_WIDGET(label));
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// Return instance object
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printf("cffi_example inst=%p: init success ! (%d total instances)\n", inst, ++instance_count);
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return inst;
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}
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void wbcffi_deinit(void* instance) {
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printf("cffi_example inst=%p: free memory\n", instance);
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free(instance);
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}
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void wbcffi_update(void* instance) { printf("cffi_example inst=%p: Update request\n", instance); }
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void wbcffi_refresh(void* instance, int signal) {
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printf("cffi_example inst=%p: Received refresh signal %d\n", instance, signal);
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}
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void wbcffi_doaction(void* instance, const char* name) {
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printf("cffi_example inst=%p: doAction(%s)\n", instance, name);
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}
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