Hello,
First post in the forum. Hello everyone!
Enjoying the programming of a ESP32 system that embeds a 480x320 screen. I’m having problems creating an array of controls and accessing the individual user_data of each one of the buttons.
The intention is to create a maximum of 10 groups of controls. Each group is composed by a list, label and a spinbox.
I’m able to create the user interface without problems, but the events linked with the buttons responds to all of them, no matter which one I press. I have read some threads about the same issue, but could not find a solution.
// this is the class I created
static const uint8_t numberOfSteps = 10;
class SemiAutomaticStep
{
public:
lv_obj_t *container;
lv_obj_t *stepOptions;
lv_obj_t *labelTime;
lv_obj_t *timeSpinbox;
lv_obj_t *timeIncButton;
lv_obj_t *timeDecButton;
WorkingMode workingMode;
uint16_t time;
uint16_t position;
SemiAutomaticStep() {}
};
static SemiAutomaticStep semiAutomaticSteps[numberOfSteps];
//this is the function to create the groups (all the controls inside an object)
static void IRAM_ATTR addStep(SemiAutomaticStep step)
{
static lv_style_t style_container;
lv_style_init(&style_container);
lv_style_set_bg_color(&style_container, lv_palette_main(LV_PALETTE_GREY));
step.container = lv_obj_create(semiAutoStepsContainer);
lv_obj_set_size(step.container, 314, 70);
lv_obj_set_pos(step.container, -12, -12 + (step.position * 72));
lv_obj_add_style(step.container, &style_container, 0);
char buffer[1024];
snprintf(buffer, sizeof(buffer), "Air%i\nWater%i\nNone%i", step.position, step.position, step.position);
step.stepOptions = lv_dropdown_create(step.container);
lv_dropdown_set_options(step.stepOptions, buffer);
lv_obj_set_size(step.stepOptions, 95, 40);
lv_obj_set_pos(step.stepOptions, -10, 0);
step.labelTime = lv_label_create(step.container);
lv_label_set_recolor(step.labelTime, true);
lv_label_set_text_fmt(step.labelTime, "#FCFCFC Secs");
lv_obj_set_pos(step.labelTime, 95, 10);
// timer spin box
step.timeSpinbox = lv_spinbox_create(step.container);
lv_obj_set_size(step.timeSpinbox, 50, 40);
lv_obj_set_pos(step.timeSpinbox, 190, 0);
lv_spinbox_set_range(step.timeSpinbox, 0, 120);
lv_spinbox_set_digit_format(step.timeSpinbox, 3, 0);
lv_spinbox_set_step(step.timeSpinbox, 1);
lv_spinbox_set_value(step.timeSpinbox, getManualTime());
// timer inc button
step.timeIncButton = lv_btn_create(step.container);
lv_obj_set_size(step.timeIncButton, 40, 40);
lv_obj_align_to(step.timeIncButton, step.timeSpinbox, LV_ALIGN_OUT_RIGHT_MID, 3, 0);
lv_obj_set_style_bg_img_src(step.timeIncButton, LV_SYMBOL_PLUS, 0);
lv_obj_add_event_cb(step.timeIncButton, semiAutoModeTime_spinbox_increment_event, LV_EVENT_ALL, (void*)&step);
Serial.printf("Add event with user_data=%i\r\n", stepCounter);
// timer dec button
step.timeDecButton = lv_btn_create(step.container);
lv_obj_set_size(step.timeDecButton, 40, 40);
lv_obj_align_to(step.timeDecButton, step.timeSpinbox, LV_ALIGN_OUT_LEFT_MID, -3, 0);
lv_obj_set_style_bg_img_src(step.timeDecButton, LV_SYMBOL_MINUS, 0);
lv_obj_add_event_cb(step.timeDecButton, semiAutoModeTime_spinbox_decrement_event, LV_EVENT_ALL, (void*)&step);
Serial.printf("Add event with user_data=%i\r\n", stepCounter);
}
// and these are the event handlers
void semiAutoModeTime_spinbox_decrement_event(lv_event_t *e)
{
lv_event_code_t code = lv_event_get_code(e);
lv_obj_t *target = lv_event_get_target(e);
if (code == LV_EVENT_SHORT_CLICKED || code == LV_EVENT_LONG_PRESSED_REPEAT)
{
static SemiAutomaticStep *step= (SemiAutomaticStep *)lv_event_get_user_data(e);
Serial.printf("UserData is: %d\r\n", step->position);
}
}
void semiAutoModeTime_spinbox_increment_event(lv_event_t *e)
{
lv_event_code_t code = lv_event_get_code(e);
lv_obj_t *target = lv_event_get_target(e);
if (code == LV_EVENT_SHORT_CLICKED || code == LV_EVENT_LONG_PRESSED_REPEAT)
{
static SemiAutomaticStep *step= (SemiAutomaticStep *)lv_event_get_user_data(e);
Serial.printf("UserData is: %d\r\n", step->position);
}
}
This is the user interface. I want to know which of the ‘+’ or ‘-’ buttons are pressed without having to write an individual function for each control.
Could anyone give me a clue about how to know which button raised the event? Am I using a good strategy or there’s a better method?
Thanks in advance,
Paco
