Embedded graphics library to create beautiful UIs for any MCU, MPU and display type. - lvgl/src/core/lv_indev_scroll.c at d67dd943cadb3d21a3d9488b6354f669e2e58c65 · lvgl/lvgl
scroll_throw_vect.y + indev->pointer.vect.y) / 2; This assumes that indev_proc_press() is called at a roughly fixed interval. But if an input driver with LV_INDEV_MODE_EVENT delivers events much more quickly (like SDL does), the scroll vector decays to 0 almost immediately....
1.2、示例2 #include "../../lv_examples.h" #if LV_BUILD_EXAMPLES static void drag_event_handler(lv_event_t * e) { lv_obj_t * obj = lv_event_get_target(e); lv_indev_t * indev = lv_indev_active(); if(indev == NULL) return; lv_point_t vect; lv_indev_get_vect(indev, &...
• Try increasing LV_MEM_SIZE. • Be sure lv_disp_drv_t, lv_indev_drv_t and lv_fs_drv_t are global or static. • Be sure your display works without LVGL. E.g. paint it to red on start up. • Enable Logging • Enable asserts in lv_conf.h (LV_USE_ASSERT_...) ...
LVGL 端口到开发板 • lv_binding_.. 绑定到其他语言 • lv_... 移植到其他平台 2.1.5 Release policy(发布策略) The core repositories follow the rules of Semantic versioning: • Major versions for incompatible API changes. E.g. v5.0.0, v6.0.0 • Minor version for new but backward-...
• Be sure lv_disp_t, lv_indev_t and lv_fs_drv_t are global or static. • Be sure your display works without LVGL. E.g. paint it to red on start up. • Enable Logging • Enable asserts in lv_conf.h (LV_USE_ASSERT_...) • If you use an RTOS – increase the ...
lv_obj_set_scroll_dir(obj, LV_DIR_ALL); I has enabled LV_DIR_ALL. But when scrolling horizontally, it is not possible to scroll vertically, or when scrolling vertically, it is not possible to scroll horizontally
()indev.get_vect(vect)x=obj.get_x()+vect.xy=obj.get_y()+vect.yobj.set_pos(x,y)mem.now()## Make an object dragable.#obj=lv.obj(lv.scr_act())obj.set_size(150,100)obj.add_event_cb(drag_event_handler,lv.EVENT.PRESSING,None)label=lv.label(obj)label.set_text("Drag me")...
static void drag_event_handler(lv_event_t * e){ lv_obj_t * obj = lv_event_get_target(e); lv_indev_t * indev = lv_indev_get_act(); lv_point_t vect; lv_indev_get_vect(indev, &vect); lv_coord_t x = lv_obj_get_x(obj); lv_coord_t y = lv_obj_get_y(obj); lv_coor...
+ lv_indev_t * indev = lv_indev_active(); lv_point_t p; lv_indev_get_vect(indev, &p); @@ -364,6 +368,8 @@ static void lv_roller_event(const lv_obj_class_t * class_p, lv_event_t * e) } } else if(code == LV_EVENT_RELEASED || code == LV_EVENT_PRESS_LOST) { ...