77 lines
2.5 KiB
Diff
77 lines
2.5 KiB
Diff
From d7696f869a014d6fa15e25cf7818e43f3c110acb Mon Sep 17 00:00:00 2001
|
|
From: Mike Engel <Mike.Engel@digi.com>
|
|
Date: Tue, 2 Sep 2025 11:49:32 +0200
|
|
Subject: [PATCH] lvgl-demo: add input device discovery support to LVGL-demo
|
|
|
|
This commit adds input device discovery support to the demo.
|
|
When input device is a mouse it will create the cursor.
|
|
|
|
Signed-off-by: Mike Engel <Mike.Engel@digi.com>
|
|
---
|
|
main.c | 29 +++++++++++++++++++++++++++++
|
|
1 file changed, 29 insertions(+)
|
|
|
|
diff --git a/main.c b/main.c
|
|
index ba03f23..f821936 100644
|
|
--- a/main.c
|
|
+++ b/main.c
|
|
@@ -1,5 +1,6 @@
|
|
#include "lvgl/lvgl.h"
|
|
#include "lvgl/demos/lv_demos.h"
|
|
+#include "lvgl/src/core/lv_global.h"
|
|
#include <unistd.h>
|
|
#include <pthread.h>
|
|
#include <time.h>
|
|
@@ -11,6 +12,30 @@ static const char *getenv_default(const char *name, const char *dflt)
|
|
return getenv(name) ? : dflt;
|
|
}
|
|
|
|
+static void indev_deleted_cb(lv_event_t * e)
|
|
+{
|
|
+ if(LV_GLOBAL_DEFAULT()->deinit_in_progress)
|
|
+ return;
|
|
+ lv_obj_t * cursor_obj = lv_event_get_user_data(e);
|
|
+ lv_obj_delete(cursor_obj);
|
|
+}
|
|
+
|
|
+static void discovery_cb(lv_indev_t * indev, lv_evdev_type_t type, void * user_data)
|
|
+{
|
|
+ LV_LOG_USER("new '%s' device discovered", type == LV_EVDEV_TYPE_REL ? "REL" :
|
|
+ type == LV_EVDEV_TYPE_ABS ? "ABS" :
|
|
+ type == LV_EVDEV_TYPE_KEY ? "KEY" :
|
|
+ "unknown");
|
|
+ /* if input device is mouse add cursor */
|
|
+ if(type == LV_EVDEV_TYPE_REL) {
|
|
+ LV_IMAGE_DECLARE(mouse_cursor_icon);
|
|
+ lv_obj_t * cursor_obj = lv_image_create(lv_screen_active());
|
|
+ lv_image_set_src(cursor_obj, &mouse_cursor_icon);
|
|
+ lv_indev_set_cursor(indev, cursor_obj);
|
|
+ lv_indev_add_event_cb(indev, indev_deleted_cb, LV_EVENT_DELETE, cursor_obj);
|
|
+ }
|
|
+}
|
|
+
|
|
#if LV_USE_LINUX_FBDEV
|
|
static void lv_linux_disp_init(void)
|
|
{
|
|
@@ -18,6 +43,8 @@ static void lv_linux_disp_init(void)
|
|
lv_display_t * disp = lv_linux_fbdev_create();
|
|
|
|
lv_linux_fbdev_set_file(disp, device);
|
|
+ /* search for input devices */
|
|
+ lv_evdev_discovery_start(discovery_cb, NULL);
|
|
}
|
|
#elif LV_USE_LINUX_DRM
|
|
static void lv_linux_disp_init(void)
|
|
@@ -26,6 +53,8 @@ static void lv_linux_disp_init(void)
|
|
lv_display_t * disp = lv_linux_drm_create();
|
|
|
|
lv_linux_drm_set_file(disp, device, -1);
|
|
+ /* search for input devices */
|
|
+ lv_evdev_discovery_start(discovery_cb, NULL);
|
|
}
|
|
#elif LV_USE_SDL
|
|
static void lv_linux_disp_init(void)
|
|
--
|
|
2.51.0
|
|
|