Timo Niemann
112 lines
3.3 KiB
C
112 lines
3.3 KiB
C
#include <stdarg.h>
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdio.h>
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#include "lvgl.h"
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#include "esp_lvgl_port.h"
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#include "lcd/ui_log.h"
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#include "lcd/ui_internal.h"
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#define UI_LOG_MAX_LINES 41
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#define UI_LOG_LINE_MAX_LENGTH 160
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static lv_obj_t *log_textarea = NULL;
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static char log_lines[UI_LOG_MAX_LINES][UI_LOG_LINE_MAX_LENGTH];
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static size_t log_line_length = 0;
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static size_t log_line_start = 0;
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static size_t ui_log_buffer_index(size_t line_offset){
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return (log_line_start + line_offset) % UI_LOG_MAX_LINES;
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}
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static const char *ui_log_store_line(const char *text, bool *out_evicted){
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size_t line_index;
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bool evicted = false;
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if(log_line_length < UI_LOG_MAX_LINES){
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line_index = ui_log_buffer_index(log_line_length);
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log_line_length++;
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}
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else{
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line_index = log_line_start;
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log_line_start = ui_log_buffer_index(1);
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evicted = true;
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}
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snprintf(log_lines[line_index], sizeof(log_lines[line_index]), "%s", text);
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*out_evicted = evicted;
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return log_lines[line_index];
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}
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static void ui_log_append_line_locked(const char *line){
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lv_textarea_add_text(log_textarea, line);
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lv_textarea_add_text(log_textarea, "\n");
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lv_textarea_set_cursor_pos(log_textarea, LV_TEXTAREA_CURSOR_LAST);
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}
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static void ui_log_render_all_locked(void){
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lv_textarea_set_text(log_textarea, "");
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for(size_t line_offset = 0; line_offset < log_line_length; line_offset++){
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lv_textarea_add_text(log_textarea, log_lines[ui_log_buffer_index(line_offset)]);
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lv_textarea_add_text(log_textarea, "\n");
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}
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lv_textarea_set_cursor_pos(log_textarea, LV_TEXTAREA_CURSOR_LAST);
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}
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void ui_log_append(const char *text){
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if(text == NULL) return;
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bool evicted = false;
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const char *stored_line = ui_log_store_line(text, &evicted);
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if(log_textarea == NULL) return;
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lvgl_port_lock(0);
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if(evicted) ui_log_render_all_locked();
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else ui_log_append_line_locked(stored_line);
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lvgl_port_unlock();
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}
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void ui_log_appendf(const char *format, ...){
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if(format == NULL) return;
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char line[UI_LOG_LINE_MAX_LENGTH];
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va_list args;
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va_start(args, format);
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vsnprintf(line, sizeof(line), format, args);
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va_end(args);
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ui_log_append(line);
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}
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void ui_log_detach(void){
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log_textarea = NULL;
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}
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void ui_log_build_view(lv_obj_t *screen){
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ui_attach_toggle(screen);
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lv_obj_set_style_bg_color(screen, lv_color_hex(0x101418), 0);
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lv_obj_t *title = lv_label_create(screen);
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ui_attach_toggle(title);
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lv_label_set_text(title, "SD Image Viewer");
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lv_obj_set_style_text_color(title, lv_color_white(), 0);
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lv_obj_align(title, LV_ALIGN_TOP_MID, 0, 14);
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log_textarea = lv_textarea_create(screen);
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ui_attach_toggle(log_textarea);
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lv_obj_set_size(log_textarea, 440, 730);
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lv_obj_align(log_textarea, LV_ALIGN_TOP_LEFT, 20, 40);
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lv_textarea_set_one_line(log_textarea, false);
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lv_textarea_set_cursor_click_pos(log_textarea, false);
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lv_textarea_set_text(log_textarea, "");
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lv_obj_set_style_bg_color(log_textarea, lv_color_hex(0x182028), 0);
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lv_obj_set_style_text_color(log_textarea, lv_color_hex(0xdde7ef), 0);
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lv_obj_set_style_border_color(log_textarea, lv_color_hex(0x4b6478), 0);
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lv_obj_set_style_radius(log_textarea, 4, 0);
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lv_obj_set_style_pad_all(log_textarea, 12, 0);
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ui_log_render_all_locked();
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}
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