init lvgl code
This commit is contained in:
ShallowGreen123
22
LVGL.Simulator/lvgl/examples/widgets/btnmatrix/index.rst
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22
LVGL.Simulator/lvgl/examples/widgets/btnmatrix/index.rst
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Simple Button matrix
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""""""""""""""""""""""
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.. lv_example:: widgets/btnmatrix/lv_example_btnmatrix_1
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:language: c
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Custom buttons
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""""""""""""""""""""""
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.. lv_example:: widgets/btnmatrix/lv_example_btnmatrix_2
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:language: c
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Pagination
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""""""""""""""""""""""
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.. lv_example:: widgets/btnmatrix/lv_example_btnmatrix_3
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:language: c
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#include "../../lv_examples.h"
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#if LV_USE_BTNMATRIX && LV_BUILD_EXAMPLES
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static void event_handler(lv_event_t * e)
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{
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lv_event_code_t code = lv_event_get_code(e);
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lv_obj_t * obj = lv_event_get_target(e);
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if(code == LV_EVENT_VALUE_CHANGED) {
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uint32_t id = lv_btnmatrix_get_selected_btn(obj);
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const char * txt = lv_btnmatrix_get_btn_text(obj, id);
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LV_LOG_USER("%s was pressed\n", txt);
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}
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}
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static const char * btnm_map[] = {"1", "2", "3", "4", "5", "\n",
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"6", "7", "8", "9", "0", "\n",
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"Action1", "Action2", ""
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};
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void lv_example_btnmatrix_1(void)
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{
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lv_obj_t * btnm1 = lv_btnmatrix_create(lv_scr_act());
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lv_btnmatrix_set_map(btnm1, btnm_map);
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lv_btnmatrix_set_btn_width(btnm1, 10, 2); /*Make "Action1" twice as wide as "Action2"*/
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lv_btnmatrix_set_btn_ctrl(btnm1, 10, LV_BTNMATRIX_CTRL_CHECKABLE);
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lv_btnmatrix_set_btn_ctrl(btnm1, 11, LV_BTNMATRIX_CTRL_CHECKED);
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lv_obj_align(btnm1, LV_ALIGN_CENTER, 0, 0);
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lv_obj_add_event_cb(btnm1, event_handler, LV_EVENT_ALL, NULL);
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}
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#endif
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def event_handler(evt):
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code = evt.get_code()
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obj = evt.get_target()
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if code == lv.EVENT.VALUE_CHANGED :
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id = obj.get_selected_btn()
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txt = obj.get_btn_text(id)
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print("%s was pressed"%txt)
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btnm_map = ["1", "2", "3", "4", "5", "\n",
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"6", "7", "8", "9", "0", "\n",
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"Action1", "Action2", ""]
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btnm1 = lv.btnmatrix(lv.scr_act())
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btnm1.set_map(btnm_map)
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btnm1.set_btn_width(10, 2) # Make "Action1" twice as wide as "Action2"
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btnm1.set_btn_ctrl(10, lv.btnmatrix.CTRL.CHECKABLE)
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btnm1.set_btn_ctrl(11, lv.btnmatrix.CTRL.CHECKED)
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btnm1.align(lv.ALIGN.CENTER, 0, 0)
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btnm1.add_event_cb(event_handler, lv.EVENT.ALL, None)
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#endif
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#include "../../lv_examples.h"
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#if LV_USE_BTNMATRIX && LV_BUILD_EXAMPLES
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static void event_cb(lv_event_t * e)
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{
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lv_event_code_t code = lv_event_get_code(e);
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lv_obj_t * obj = lv_event_get_target(e);
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if(code == LV_EVENT_DRAW_PART_BEGIN) {
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lv_obj_draw_part_dsc_t * dsc = lv_event_get_param(e);
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/*Change the draw descriptor the 2nd button*/
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if(dsc->id == 1) {
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dsc->rect_dsc->radius = 0;
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if(lv_btnmatrix_get_selected_btn(obj) == dsc->id) dsc->rect_dsc->bg_color = lv_palette_darken(LV_PALETTE_BLUE, 3);
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else dsc->rect_dsc->bg_color = lv_palette_main(LV_PALETTE_BLUE);
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dsc->rect_dsc->shadow_width = 6;
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dsc->rect_dsc->shadow_ofs_x = 3;
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dsc->rect_dsc->shadow_ofs_y = 3;
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dsc->label_dsc->color = lv_color_white();
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}
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/*Change the draw descriptor the 3rd button*/
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else if(dsc->id == 2) {
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dsc->rect_dsc->radius = LV_RADIUS_CIRCLE;
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if(lv_btnmatrix_get_selected_btn(obj) == dsc->id) dsc->rect_dsc->bg_color = lv_palette_darken(LV_PALETTE_RED, 3);
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else dsc->rect_dsc->bg_color = lv_palette_main(LV_PALETTE_RED);
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dsc->label_dsc->color = lv_color_white();
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}
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else if(dsc->id == 3) {
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dsc->label_dsc->opa = LV_OPA_TRANSP; /*Hide the text if any*/
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}
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}
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if(code == LV_EVENT_DRAW_PART_END) {
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lv_obj_draw_part_dsc_t * dsc = lv_event_get_param(e);
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/*Add custom content to the 4th button when the button itself was drawn*/
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if(dsc->id == 3) {
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LV_IMG_DECLARE(img_star);
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lv_img_header_t header;
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lv_res_t res = lv_img_decoder_get_info(&img_star, &header);
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if(res != LV_RES_OK) return;
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lv_area_t a;
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a.x1 = dsc->draw_area->x1 + (lv_area_get_width(dsc->draw_area) - header.w) / 2;
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a.x2 = a.x1 + header.w - 1;
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a.y1 = dsc->draw_area->y1 + (lv_area_get_height(dsc->draw_area) - header.h) / 2;
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a.y2 = a.y1 + header.h - 1;
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lv_draw_img_dsc_t img_draw_dsc;
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lv_draw_img_dsc_init(&img_draw_dsc);
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img_draw_dsc.recolor = lv_color_black();
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if(lv_btnmatrix_get_selected_btn(obj) == dsc->id) img_draw_dsc.recolor_opa = LV_OPA_30;
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lv_draw_img(dsc->draw_ctx, &img_draw_dsc, &a, &img_star);
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}
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}
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}
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/**
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* Add custom drawer to the button matrix to customize buttons one by one
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*/
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void lv_example_btnmatrix_2(void)
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{
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lv_obj_t * btnm = lv_btnmatrix_create(lv_scr_act());
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lv_obj_add_event_cb(btnm, event_cb, LV_EVENT_ALL, NULL);
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lv_obj_center(btnm);
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}
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#endif
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from imagetools import get_png_info, open_png
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# Register PNG image decoder
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decoder = lv.img.decoder_create()
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decoder.info_cb = get_png_info
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decoder.open_cb = open_png
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# Create an image from the png file
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try:
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with open('../../assets/img_star.png','rb') as f:
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png_data = f.read()
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except:
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print("Could not find star.png")
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sys.exit()
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img_star_argb = lv.img_dsc_t({
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'data_size': len(png_data),
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'data': png_data
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})
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def event_cb(e):
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code = e.get_code()
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obj = e.get_target()
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dsc = lv.obj_draw_part_dsc_t.__cast__(e.get_param())
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if code == lv.EVENT.DRAW_PART_BEGIN:
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# Change the draw descriptor the 2nd button
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if dsc.id == 1:
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dsc.rect_dsc.radius = 0
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if obj.get_selected_btn() == dsc.id:
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dsc.rect_dsc.bg_color = lv.palette_darken(lv.PALETTE.GREY, 3)
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else:
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dsc.rect_dsc.bg_color = lv.palette_main(lv.PALETTE.BLUE)
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dsc.rect_dsc.shadow_width = 6
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dsc.rect_dsc.shadow_ofs_x = 3
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dsc.rect_dsc.shadow_ofs_y = 3
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dsc.label_dsc.color = lv.color_white()
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# Change the draw descriptor the 3rd button
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elif dsc.id == 2:
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dsc.rect_dsc.radius = lv.RADIUS.CIRCLE
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if obj.get_selected_btn() == dsc.id:
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dsc.rect_dsc.bg_color = lv.palette_darken(lv.PALETTE.RED, 3)
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else:
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dsc.rect_dsc.bg_color = lv.palette_main(lv.PALETTE.RED)
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dsc.label_dsc.color = lv.color_white()
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elif dsc.id == 3:
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dsc.label_dsc.opa = lv.OPA.TRANSP # Hide the text if any
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if code == lv.EVENT.DRAW_PART_END:
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# Add custom content to the 4th button when the button itself was drawn
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if dsc.id == 3:
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# LV_IMG_DECLARE(img_star)
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header = lv.img_header_t()
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res = lv.img.decoder_get_info(img_star_argb, header)
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if res != lv.RES.OK:
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print("error when getting image header")
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return
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else:
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a = lv.area_t()
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a.x1 = dsc.draw_area.x1 + (dsc.draw_area.get_width() - header.w) // 2
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a.x2 = a.x1 + header.w - 1
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a.y1 = dsc.draw_area.y1 + (dsc.draw_area.get_height() - header.h) // 2
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a.y2 = a.y1 + header.h - 1
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img_draw_dsc = lv.draw_img_dsc_t()
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img_draw_dsc.init()
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img_draw_dsc.recolor = lv.color_black()
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if obj.get_selected_btn() == dsc.id:
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img_draw_dsc.recolor_opa = lv.OPA._30
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dsc.draw_ctx.img(img_draw_dsc, a, img_star_argb)
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#
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# Add custom drawer to the button matrix to c
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#
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btnm = lv.btnmatrix(lv.scr_act())
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btnm.add_event_cb(event_cb, lv.EVENT.ALL, None)
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btnm.center()
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@@ -0,0 +1,68 @@
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#include "../../lv_examples.h"
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#if LV_USE_BTNMATRIX && LV_BUILD_EXAMPLES
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static void event_cb(lv_event_t * e)
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{
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lv_obj_t * obj = lv_event_get_target(e);
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uint32_t id = lv_btnmatrix_get_selected_btn(obj);
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bool prev = id == 0 ? true : false;
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bool next = id == 6 ? true : false;
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if(prev || next) {
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/*Find the checked button*/
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uint32_t i;
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for(i = 1; i < 7; i++) {
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if(lv_btnmatrix_has_btn_ctrl(obj, i, LV_BTNMATRIX_CTRL_CHECKED)) break;
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}
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if(prev && i > 1) i--;
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else if(next && i < 5) i++;
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lv_btnmatrix_set_btn_ctrl(obj, i, LV_BTNMATRIX_CTRL_CHECKED);
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}
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}
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/**
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* Make a button group (pagination)
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*/
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void lv_example_btnmatrix_3(void)
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{
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static lv_style_t style_bg;
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lv_style_init(&style_bg);
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lv_style_set_pad_all(&style_bg, 0);
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lv_style_set_pad_gap(&style_bg, 0);
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lv_style_set_clip_corner(&style_bg, true);
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lv_style_set_radius(&style_bg, LV_RADIUS_CIRCLE);
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lv_style_set_border_width(&style_bg, 0);
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static lv_style_t style_btn;
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lv_style_init(&style_btn);
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lv_style_set_radius(&style_btn, 0);
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lv_style_set_border_width(&style_btn, 1);
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lv_style_set_border_opa(&style_btn, LV_OPA_50);
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lv_style_set_border_color(&style_btn, lv_palette_main(LV_PALETTE_GREY));
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lv_style_set_border_side(&style_btn, LV_BORDER_SIDE_INTERNAL);
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lv_style_set_radius(&style_btn, 0);
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static const char * map[] = {LV_SYMBOL_LEFT, "1", "2", "3", "4", "5", LV_SYMBOL_RIGHT, ""};
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lv_obj_t * btnm = lv_btnmatrix_create(lv_scr_act());
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lv_btnmatrix_set_map(btnm, map);
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lv_obj_add_style(btnm, &style_bg, 0);
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lv_obj_add_style(btnm, &style_btn, LV_PART_ITEMS);
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lv_obj_add_event_cb(btnm, event_cb, LV_EVENT_VALUE_CHANGED, NULL);
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lv_obj_set_size(btnm, 225, 35);
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/*Allow selecting on one number at time*/
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lv_btnmatrix_set_btn_ctrl_all(btnm, LV_BTNMATRIX_CTRL_CHECKABLE);
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lv_btnmatrix_clear_btn_ctrl(btnm, 0, LV_BTNMATRIX_CTRL_CHECKABLE);
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lv_btnmatrix_clear_btn_ctrl(btnm, 6, LV_BTNMATRIX_CTRL_CHECKABLE);
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lv_btnmatrix_set_one_checked(btnm, true);
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lv_btnmatrix_set_btn_ctrl(btnm, 1, LV_BTNMATRIX_CTRL_CHECKED);
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lv_obj_center(btnm);
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}
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#endif
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@@ -0,0 +1,64 @@
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def event_cb(e):
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obj = e.get_target()
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id = obj.get_selected_btn()
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if id == 0:
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prev = True
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else:
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prev = False
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if id == 6:
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next = True
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else:
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next = False
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if prev or next:
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# Find the checked butto
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for i in range(7):
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if obj.has_btn_ctrl(i, lv.btnmatrix.CTRL.CHECKED):
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break
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if prev and i > 1:
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i-=1
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elif next and i < 5:
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i+=1
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obj.set_btn_ctrl(i, lv.btnmatrix.CTRL.CHECKED)
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#
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# Make a button group
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#
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style_bg = lv.style_t()
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style_bg.init()
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style_bg.set_pad_all(0)
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style_bg.set_pad_gap(0)
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style_bg.set_clip_corner(True)
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style_bg.set_radius(lv.RADIUS.CIRCLE)
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style_bg.set_border_width(0)
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style_btn = lv.style_t()
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style_btn.init()
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style_btn.set_radius(0)
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style_btn.set_border_width(1)
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style_btn.set_border_opa(lv.OPA._50)
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style_btn.set_border_color(lv.palette_main(lv.PALETTE.GREY))
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style_btn.set_border_side(lv.BORDER_SIDE.INTERNAL)
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style_btn.set_radius(0)
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map = [lv.SYMBOL.LEFT,"1","2", "3", "4", "5",lv.SYMBOL.RIGHT, ""]
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btnm = lv.btnmatrix(lv.scr_act())
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btnm.set_map(map)
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btnm.add_style(style_bg, 0)
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btnm.add_style(style_btn, lv.PART.ITEMS)
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btnm.add_event_cb(event_cb, lv.EVENT.VALUE_CHANGED, None)
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btnm.set_size(225, 35)
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# Allow selecting on one number at time
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btnm.set_btn_ctrl_all(lv.btnmatrix.CTRL.CHECKABLE)
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btnm.clear_btn_ctrl(0, lv.btnmatrix.CTRL.CHECKABLE)
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btnm.clear_btn_ctrl(6, lv.btnmatrix.CTRL.CHECKABLE)
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btnm.set_one_checked(True)
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btnm.set_btn_ctrl(1, lv.btnmatrix.CTRL.CHECKED)
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btnm.center()
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