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demos: Introduce demo_window_set_expose_func().

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This commit is contained in:
Henri Verbeet
2016-11-02 16:54:44 +01:00
parent 169810d20d
commit e467b02b29
3 changed files with 27 additions and 14 deletions
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17
demos/demo_xcb.h
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@@ -49,7 +49,7 @@ struct demo_window
struct demo *demo;
void *user_data;
void (*draw_func)(void *user_data);
void (*expose_func)(struct demo_window *window, void *user_data);
void (*key_press_func)(struct demo_window *window, demo_key key, void *user_data);
};
@@ -132,7 +132,7 @@ static inline struct demo_window *demo_find_window(struct demo *demo, xcb_window
}
static inline struct demo_window *demo_window_create(struct demo *demo, const char *title,
unsigned int width, unsigned int height, void (*draw_func)(void *user_data), void *user_data)
unsigned int width, unsigned int height, void *user_data)
{
static const uint32_t window_events = XCB_EVENT_MASK_EXPOSURE | XCB_EVENT_MASK_KEY_PRESS;
@@ -151,8 +151,8 @@ static inline struct demo_window *demo_window_create(struct demo *demo, const ch
window->window = xcb_generate_id(demo->connection);
window->demo = demo;
window->draw_func = draw_func;
window->user_data = user_data;
window->expose_func = NULL;
window->key_press_func = NULL;
screen = xcb_setup_roots_iterator(xcb_get_setup(demo->connection)).data;
xcb_create_window(demo->connection, XCB_COPY_FROM_PARENT, window->window, screen->root, 0, 0,
@@ -191,6 +191,12 @@ static inline void demo_window_set_key_press_func(struct demo_window *window,
window->key_press_func = key_press_func;
}
static inline void demo_window_set_expose_func(struct demo_window *window,
void (*expose_func)(struct demo_window *window, void *user_data))
{
window->expose_func = expose_func;
}
static inline void demo_process_events(struct demo *demo)
{
const struct xcb_client_message_event_t *client_message;
@@ -206,8 +212,9 @@ static inline void demo_process_events(struct demo *demo)
switch (XCB_EVENT_RESPONSE_TYPE(event))
{
case XCB_EXPOSE:
if ((window = demo_find_window(demo, ((struct xcb_expose_event_t *)event)->window)))
window->draw_func(window->user_data);
if ((window = demo_find_window(demo, ((struct xcb_expose_event_t *)event)->window))
&& window->expose_func)
window->expose_func(window, window->user_data);
break;
case XCB_KEY_PRESS: