diff options
Diffstat (limited to 'lib/lvgl/src/hal/lv_hal_indev.c')
| m--------- | lib/lvgl | 0 | ||||
| -rw-r--r-- | lib/lvgl/src/hal/lv_hal_indev.c | 195 |
2 files changed, 195 insertions, 0 deletions
diff --git a/lib/lvgl b/lib/lvgl deleted file mode 160000 -Subproject 0732400e7b564dd0e7dc4a924619d8e19c5b23a diff --git a/lib/lvgl/src/hal/lv_hal_indev.c b/lib/lvgl/src/hal/lv_hal_indev.c new file mode 100644 index 00000000..c3661e42 --- /dev/null +++ b/lib/lvgl/src/hal/lv_hal_indev.c @@ -0,0 +1,195 @@ +/** + * @file lv_hal_indev.c + * + * @description Input device HAL interface + * + */ + +/********************* + * INCLUDES + *********************/ +#include "../misc/lv_assert.h" +#include "../hal/lv_hal_indev.h" +#include "../core/lv_indev.h" +#include "../misc/lv_mem.h" +#include "../misc/lv_gc.h" +#include "lv_hal_disp.h" + +/********************* + * DEFINES + *********************/ + +/********************** + * TYPEDEFS + **********************/ + +/********************** + * GLOBAL PROTOTYPES + **********************/ + +/********************** + * STATIC PROTOTYPES + **********************/ + +/********************** + * STATIC VARIABLES + **********************/ + +/********************** + * MACROS + **********************/ +#if LV_LOG_TRACE_INDEV + #define INDEV_TRACE(...) LV_LOG_TRACE(__VA_ARGS__) +#else + #define INDEV_TRACE(...) +#endif + +/********************** + * GLOBAL FUNCTIONS + **********************/ + +/** + * Initialize an input device driver with default values. + * It is used to surly have known values in the fields ant not memory junk. + * After it you can set the fields. + * @param driver pointer to driver variable to initialize + */ +void lv_indev_drv_init(lv_indev_drv_t * driver) +{ + lv_memset_00(driver, sizeof(lv_indev_drv_t)); + + driver->type = LV_INDEV_TYPE_NONE; + driver->scroll_limit = LV_INDEV_DEF_SCROLL_LIMIT; + driver->scroll_throw = LV_INDEV_DEF_SCROLL_THROW; + driver->long_press_time = LV_INDEV_DEF_LONG_PRESS_TIME; + driver->long_press_repeat_time = LV_INDEV_DEF_LONG_PRESS_REP_TIME; + driver->gesture_limit = LV_INDEV_DEF_GESTURE_LIMIT; + driver->gesture_min_velocity = LV_INDEV_DEF_GESTURE_MIN_VELOCITY; +} + +/** + * Register an initialized input device driver. + * @param driver pointer to an initialized 'lv_indev_drv_t' variable. + * Only pointer is saved, so the driver should be static or dynamically allocated. + * @return pointer to the new input device or NULL on error + */ +lv_indev_t * lv_indev_drv_register(lv_indev_drv_t * driver) +{ + if(driver->disp == NULL) driver->disp = lv_disp_get_default(); + + if(driver->disp == NULL) { + LV_LOG_WARN("lv_indev_drv_register: no display registered hence can't attach the indev to " + "a display"); + return NULL; + } + + lv_indev_t * indev = _lv_ll_ins_head(&LV_GC_ROOT(_lv_indev_ll)); + LV_ASSERT_MALLOC(indev); + if(!indev) { + return NULL; + } + + lv_memset_00(indev, sizeof(lv_indev_t)); + indev->driver = driver; + + indev->proc.reset_query = 1; + indev->driver->read_timer = lv_timer_create(lv_indev_read_timer_cb, LV_INDEV_DEF_READ_PERIOD, indev); + + return indev; +} + +/** + * Update the driver in run time. + * @param indev pointer to a input device. (return value of `lv_indev_drv_register`) + * @param new_drv pointer to the new driver + */ +void lv_indev_drv_update(lv_indev_t * indev, lv_indev_drv_t * new_drv) +{ + LV_ASSERT_NULL(indev); + LV_ASSERT_NULL(indev->driver); + LV_ASSERT_NULL(indev->driver->read_timer); + lv_timer_del(indev->driver->read_timer); + + LV_ASSERT_NULL(new_drv); + if(new_drv->disp == NULL) { + new_drv->disp = lv_disp_get_default(); + } + if(new_drv->disp == NULL) { + LV_LOG_WARN("lv_indev_drv_register: no display registered hence can't attach the indev to " + "a display"); + indev->proc.disabled = true; + return; + } + + indev->driver = new_drv; + indev->driver->read_timer = lv_timer_create(lv_indev_read_timer_cb, LV_INDEV_DEF_READ_PERIOD, indev); + indev->proc.reset_query = 1; +} + +/** +* Remove the provided input device. Make sure not to use the provided input device afterwards anymore. +* @param indev pointer to delete +*/ +void lv_indev_delete(lv_indev_t * indev) +{ + LV_ASSERT_NULL(indev); + LV_ASSERT_NULL(indev->driver); + LV_ASSERT_NULL(indev->driver->read_timer); + /*Clean up the read timer first*/ + lv_timer_del(indev->driver->read_timer); + /*Remove the input device from the list*/ + _lv_ll_remove(&LV_GC_ROOT(_lv_indev_ll), indev); + /*Free the memory of the input device*/ + lv_mem_free(indev); +} + +/** + * Get the next input device. + * @param indev pointer to the current input device. NULL to initialize. + * @return the next input devise or NULL if no more. Give the first input device when the parameter + * is NULL + */ +lv_indev_t * lv_indev_get_next(lv_indev_t * indev) +{ + if(indev == NULL) + return _lv_ll_get_head(&LV_GC_ROOT(_lv_indev_ll)); + else + return _lv_ll_get_next(&LV_GC_ROOT(_lv_indev_ll), indev); +} + +/** + * Read data from an input device. + * @param indev pointer to an input device + * @param data input device will write its data here + */ +void _lv_indev_read(lv_indev_t * indev, lv_indev_data_t * data) +{ + lv_memset_00(data, sizeof(lv_indev_data_t)); + + /* For touchpad sometimes users don't set the last pressed coordinate on release. + * So be sure a coordinates are initialized to the last point */ + if(indev->driver->type == LV_INDEV_TYPE_POINTER) { + data->point.x = indev->proc.types.pointer.last_raw_point.x; + data->point.y = indev->proc.types.pointer.last_raw_point.y; + } + /*Similarly set at least the last key in case of the user doesn't set it on release*/ + else if(indev->driver->type == LV_INDEV_TYPE_KEYPAD) { + data->key = indev->proc.types.keypad.last_key; + } + /*For compatibility assume that used button was enter (encoder push)*/ + else if(indev->driver->type == LV_INDEV_TYPE_ENCODER) { + data->key = LV_KEY_ENTER; + } + + if(indev->driver->read_cb) { + INDEV_TRACE("calling indev_read_cb"); + indev->driver->read_cb(indev->driver, data); + } + else { + LV_LOG_WARN("indev_read_cb is not registered"); + } +} + +/********************** + * STATIC FUNCTIONS + **********************/ |