/** * Create a switch objects * @param par pointer to an object, it will be the parent of the new switch * @param copy pointer to a switch object, if not NULL then the new object will be copied from it * @return pointer to the created switch */ lv_obj_t * lv_sw_create(lv_obj_t * par, lv_obj_t * copy) { /*Create the ancestor of switch*/ lv_obj_t * new_sw = lv_slider_create(par, copy); lv_mem_assert(new_sw); if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_func(new_sw); /*Allocate the switch type specific extended data*/ lv_sw_ext_t * ext = lv_obj_allocate_ext_attr(new_sw, sizeof(lv_sw_ext_t)); lv_mem_assert(ext); /*Initialize the allocated 'ext' */ ext->changed = 0; ext->style_knob_off = ext->slider.style_knob; ext->style_knob_on = ext->slider.style_knob; /*The signal and design functions are not copied so set them here*/ lv_obj_set_signal_func(new_sw, lv_sw_signal); /*Init the new switch switch*/ if(copy == NULL) { lv_slider_set_range(new_sw, 0, 1); lv_obj_set_size(new_sw, 2 * LV_DPI / 3, LV_DPI / 3); lv_slider_set_knob_in(new_sw, true); /*Set the default styles*/ lv_theme_t *th = lv_theme_get_current(); if(th) { lv_sw_set_style(new_sw, LV_SW_STYLE_BG, th->sw.bg); lv_sw_set_style(new_sw, LV_SW_STYLE_INDIC, th->sw.indic); lv_sw_set_style(new_sw, LV_SW_STYLE_KNOB_OFF, th->sw.knob_off); lv_sw_set_style(new_sw, LV_SW_STYLE_KNOB_ON, th->sw.knob_on); } else { /*Let the slider' style*/ } } /*Copy an existing switch*/ else { lv_sw_ext_t *copy_ext = lv_obj_get_ext_attr(copy); ext->style_knob_off = copy_ext->style_knob_off; ext->style_knob_on = copy_ext->style_knob_on; if(lv_sw_get_state(new_sw)) lv_slider_set_style(new_sw, LV_SLIDER_STYLE_KNOB, ext->style_knob_on); else lv_slider_set_style(new_sw, LV_SLIDER_STYLE_KNOB, ext->style_knob_off); /*Refresh the style with new signal function*/ lv_obj_refresh_style(new_sw); } return new_sw; }
static void chart_create(lv_obj_t *parent) { lv_page_set_style(parent, LV_PAGE_STYLE_BG, &lv_style_transp_fit); lv_page_set_style(parent, LV_PAGE_STYLE_SCRL, &lv_style_transp_fit); lv_page_set_scrl_fit(parent, false, false); lv_page_set_scrl_height(parent, lv_obj_get_height(parent)); lv_page_set_sb_mode(parent, LV_SB_MODE_OFF); static lv_style_t style_chart; lv_style_copy(&style_chart, &lv_style_pretty); style_chart.body.opa = LV_OPA_60; style_chart.body.radius = 0; style_chart.line.color = LV_COLOR_GRAY; chart = lv_chart_create(parent, NULL); lv_obj_set_size(chart, 2 * lv_obj_get_width(parent) / 3, lv_obj_get_height(parent) / 2); lv_obj_align(chart, NULL, LV_ALIGN_IN_TOP_MID, 0, LV_DPI / 4); lv_chart_set_type(chart, LV_CHART_TYPE_COLUMN); lv_chart_set_style(chart, &style_chart); lv_chart_set_series_opa(chart, LV_OPA_70); lv_chart_series_t *ser1; ser1 = lv_chart_add_series(chart, LV_COLOR_RED); lv_chart_set_next(chart, ser1, 40); lv_chart_set_next(chart, ser1, 30); lv_chart_set_next(chart, ser1, 47); lv_chart_set_next(chart, ser1, 59); lv_chart_set_next(chart, ser1, 59); lv_chart_set_next(chart, ser1, 31); lv_chart_set_next(chart, ser1, 55); lv_chart_set_next(chart, ser1, 70); lv_chart_set_next(chart, ser1, 82); /*Create a bar, an indicator and a knob style*/ static lv_style_t style_bar; static lv_style_t style_indic; static lv_style_t style_knob; lv_style_copy(&style_bar, &lv_style_pretty); style_bar.body.main_color = LV_COLOR_BLACK; style_bar.body.grad_color = LV_COLOR_GRAY; style_bar.body.radius = LV_RADIUS_CIRCLE; style_bar.body.border.color = LV_COLOR_WHITE; style_bar.body.opa = LV_OPA_60; style_bar.body.padding.hor = 0; style_bar.body.padding.ver = LV_DPI / 10; lv_style_copy(&style_indic, &lv_style_pretty); style_indic.body.grad_color = LV_COLOR_MARRON; style_indic.body.main_color = LV_COLOR_RED; style_indic.body.radius = LV_RADIUS_CIRCLE; style_indic.body.shadow.width = LV_DPI / 10; style_indic.body.shadow.color = LV_COLOR_RED; style_indic.body.padding.hor = LV_DPI / 30; style_indic.body.padding.ver = LV_DPI / 30; lv_style_copy(&style_knob, &lv_style_pretty); style_knob.body.radius = LV_RADIUS_CIRCLE; style_knob.body.opa = LV_OPA_70; /*Create a second slider*/ lv_obj_t *slider = lv_slider_create(parent, NULL); lv_slider_set_style(slider, LV_SLIDER_STYLE_BG, &style_bar); lv_slider_set_style(slider, LV_SLIDER_STYLE_INDIC, &style_indic); lv_slider_set_style(slider, LV_SLIDER_STYLE_KNOB, &style_knob); lv_obj_set_size(slider, lv_obj_get_width(chart), LV_DPI / 3); lv_obj_align(slider, chart, LV_ALIGN_OUT_BOTTOM_MID, 0, (LV_VER_RES - chart->coords.y2 - lv_obj_get_height(slider)) / 2); /*Align to below the chart*/ lv_slider_set_action(slider, slider_action); lv_slider_set_range(slider, 10, 1000); lv_slider_set_value(slider, 700); slider_action(slider); /*Simulate a user value set the refresh the chart*/ }