1 files changed, 65 insertions, 0 deletions
diff --git a/src/mgui/list.c b/src/mgui/list.c
new file mode 100644
index 0000000..8dc4283
--- /dev/null
+++ b/src/mgui/list.c
@@ -0,0 +1,65 @@
+#include "../../include/mgui/list.h"
+#include "../../include/alloc.h"
+#include <mgl/mgl.h>
+#include <assert.h>
+
+mgui_list* mgui_list_create(mgui_list_direction direction) {
+    mgui_list *list = mgui_alloc(sizeof(mgui_list));    
+    mgui_widget_init(&list->widget, MGUI_WIDGET_LIST);
+    list->direction = direction;
+    list->position = (mgl_vec2i){ 0, 0 };
+    list->items = NULL;
+    list->num_items = 0;
+    list->items_capacity = 0;
+    return list;
+}
+
+mgui_widget* mgui_list_to_widget(mgui_list *list) {
+    return &list->widget;
+}
+
+mgui_list* mgui_widget_to_list(mgui_widget *widget) {
+    assert(widget->type == MGUI_WIDGET_LIST);
+    return (mgui_list*)widget;
+}
+
+void mgui_list_set_position(mgui_list *self, mgl_vec2i position) {
+    self->position = position;
+}
+
+static void mgui_list_ensure_capacity(mgui_list *self, size_t new_capacity) {
+    if(self->items_capacity >= new_capacity)
+        return;
+
+    size_t capacity = self->items_capacity;
+    if(capacity == 0)
+        capacity = 8;
+
+    while(capacity < new_capacity) {
+        capacity = capacity + (capacity >> 1); /* capacity *= 1.5 */
+    }
+
+    self->items = mgui_realloc(self->items, capacity);
+    self->items_capacity = capacity;
+}
+
+void mgui_list_append(mgui_list *self, mgui_widget *widget) {
+    mgui_list_ensure_capacity(self, (self->num_items + 1) * sizeof(mgui_widget*));
+    self->items[self->num_items] = widget;
+    ++self->num_items;
+}
+
+void mgui_list_on_event(mgui_list *self, mgl_window *window, mgl_event *event) {
+    for(size_t i = 0; i < self->num_items; ++i) {
+        mgui_widget_on_event(self->items[i], window, event);
+    }
+}
+
+void mgui_list_draw(mgui_list *self, mgl_window *window) {
+    mgl_context *context = mgl_get_context();
+    context->gl.glTranslatef(self->position.x, self->position.y, 0.0f);
+    for(size_t i = 0; i < self->num_items; ++i) {
+        mgui_widget_draw(self->items[i], window);
+    }
+    context->gl.glLoadIdentity(); /* TODO: Remove, but what about glRotatef above */
+}