unleashed-firmware/applications/gui/elements.c

#include "elements.h"
#include "gui/canvas.h"

#include <gui/icon_i.h>
#include <gui/icon_animation_i.h>

#include <m-string.h>
#include <furi.h>
#include "canvas_i.h"

#include <string.h>
#include <stdint.h>
#include <stdbool.h>

typedef struct {
    uint8_t x;
    uint8_t y;
    uint8_t leading_min;
    uint8_t leading_default;
    uint8_t height;
    uint8_t descender;
    uint8_t len;
    const char* text;
} ElementTextBoxLine;

void elements_progress_bar(
    Canvas* canvas,
    uint8_t x,
    uint8_t y,
    uint8_t width,
    uint8_t progress,
    uint8_t total) {
    furi_assert(canvas);
    furi_assert(total > 0);
    uint8_t height = 9;
    uint8_t marker_width = 7;
    furi_assert(width > marker_width);

    uint8_t progress_length = ((float)progress / total) * (width - marker_width - 2);

    // rframe doesnt work if (radius * 2) > any rect side, so write manually
    uint8_t x_max = x + width - 1;
    uint8_t y_max = y + height - 1;
    canvas_draw_line(canvas, x + 3, y, x_max - 3, y);
    canvas_draw_line(canvas, x_max - 3, y, x_max, y + 3);
    canvas_draw_line(canvas, x_max, y + 3, x_max, y_max - 3);
    canvas_draw_line(canvas, x_max, y_max - 3, x_max - 3, y_max);
    canvas_draw_line(canvas, x_max - 3, y_max, x + 3, y_max);
    canvas_draw_line(canvas, x + 3, y_max, x, y_max - 3);
    canvas_draw_line(canvas, x, y_max - 3, x, y + 3);
    canvas_draw_line(canvas, x, y + 3, x + 3, y);

    canvas_draw_rbox(canvas, x + 1, y + 1, marker_width + progress_length, height - 2, 3);
    canvas_invert_color(canvas);
    canvas_draw_dot(canvas, x + progress_length + 3, y + 2);
    canvas_draw_dot(canvas, x + progress_length + 4, y + 2);
    canvas_draw_dot(canvas, x + progress_length + 5, y + 3);
    canvas_draw_dot(canvas, x + progress_length + 6, y + 4);
    canvas_invert_color(canvas);
}

void elements_scrollbar_pos(
    Canvas* canvas,
    uint8_t x,
    uint8_t y,
    uint8_t height,
    uint16_t pos,
    uint16_t total) {
    furi_assert(canvas);
    // prevent overflows
    canvas_set_color(canvas, ColorWhite);
    canvas_draw_box(canvas, x - 3, y, 3, height);
    // dot line
    canvas_set_color(canvas, ColorBlack);
    for(uint8_t i = y; i < height + y; i += 2) {
        canvas_draw_dot(canvas, x - 2, i);
    }
    // Position block
    if(total) {
        float block_h = ((float)height) / total;
        canvas_draw_box(canvas, x - 3, y + (block_h * pos), 3, MAX(block_h, 1));
    }
}

void elements_scrollbar(Canvas* canvas, uint16_t pos, uint16_t total) {
    furi_assert(canvas);

    uint8_t width = canvas_width(canvas);
    uint8_t height = canvas_height(canvas);
    // prevent overflows
    canvas_set_color(canvas, ColorWhite);
    canvas_draw_box(canvas, width - 3, 0, 3, height);
    // dot line
    canvas_set_color(canvas, ColorBlack);
    for(uint8_t i = 0; i < height; i += 2) {
        canvas_draw_dot(canvas, width - 2, i);
    }
    // Position block
    if(total) {
        float block_h = ((float)height) / total;
        canvas_draw_box(canvas, width - 3, block_h * pos, 3, MAX(block_h, 1));
    }
}

void elements_frame(Canvas* canvas, uint8_t x, uint8_t y, uint8_t width, uint8_t height) {
    furi_assert(canvas);

    canvas_draw_line(canvas, x + 2, y, x + width - 2, y);
    canvas_draw_line(canvas, x + 1, y + height - 1, x + width, y + height - 1);
    canvas_draw_line(canvas, x + 2, y + height, x + width - 1, y + height);

    canvas_draw_line(canvas, x, y + 2, x, y + height - 2);
    canvas_draw_line(canvas, x + width - 1, y + 1, x + width - 1, y + height - 2);
    canvas_draw_line(canvas, x + width, y + 2, x + width, y + height - 2);

    canvas_draw_dot(canvas, x + 1, y + 1);
}

void elements_button_left(Canvas* canvas, const char* str) {
    const uint8_t button_height = 12;
    const uint8_t vertical_offset = 3;
    const uint8_t horizontal_offset = 3;
    const uint8_t string_width = canvas_string_width(canvas, str);
    const Icon* icon = &I_ButtonLeft_4x7;
    const uint8_t icon_h_offset = 3;
    const uint8_t icon_width_with_offset = icon->width + icon_h_offset;
    const uint8_t icon_v_offset = icon->height + vertical_offset;
    const uint8_t button_width = string_width + horizontal_offset * 2 + icon_width_with_offset;

    const uint8_t x = 0;
    const uint8_t y = canvas_height(canvas);

    canvas_draw_box(canvas, x, y - button_height, button_width, button_height);
    canvas_draw_line(canvas, x + button_width + 0, y, x + button_width + 0, y - button_height + 0);
    canvas_draw_line(canvas, x + button_width + 1, y, x + button_width + 1, y - button_height + 1);
    canvas_draw_line(canvas, x + button_width + 2, y, x + button_width + 2, y - button_height + 2);

    canvas_invert_color(canvas);
    canvas_draw_icon(canvas, x + horizontal_offset, y - icon_v_offset, &I_ButtonLeft_4x7);
    canvas_draw_str(
        canvas, x + horizontal_offset + icon_width_with_offset, y - vertical_offset, str);
    canvas_invert_color(canvas);
}

void elements_button_right(Canvas* canvas, const char* str) {
    const uint8_t button_height = 12;
    const uint8_t vertical_offset = 3;
    const uint8_t horizontal_offset = 3;
    const uint8_t string_width = canvas_string_width(canvas, str);
    const Icon* icon = &I_ButtonRight_4x7;
    const uint8_t icon_h_offset = 3;
    const uint8_t icon_width_with_offset = icon->width + icon_h_offset;
    const uint8_t icon_v_offset = icon->height + vertical_offset;
    const uint8_t button_width = string_width + horizontal_offset * 2 + icon_width_with_offset;

    const uint8_t x = canvas_width(canvas);
    const uint8_t y = canvas_height(canvas);

    canvas_draw_box(canvas, x - button_width, y - button_height, button_width, button_height);
    canvas_draw_line(canvas, x - button_width - 1, y, x - button_width - 1, y - button_height + 0);
    canvas_draw_line(canvas, x - button_width - 2, y, x - button_width - 2, y - button_height + 1);
    canvas_draw_line(canvas, x - button_width - 3, y, x - button_width - 3, y - button_height + 2);

    canvas_invert_color(canvas);
    canvas_draw_str(canvas, x - button_width + horizontal_offset, y - vertical_offset, str);
    canvas_draw_icon(
        canvas, x - horizontal_offset - icon->width, y - icon_v_offset, &I_ButtonRight_4x7);
    canvas_invert_color(canvas);
}

void elements_button_center(Canvas* canvas, const char* str) {
    const uint8_t button_height = 12;
    const uint8_t vertical_offset = 3;
    const uint8_t horizontal_offset = 1;
    const uint8_t string_width = canvas_string_width(canvas, str);
    const Icon* icon = &I_ButtonCenter_7x7;
    const uint8_t icon_h_offset = 3;
    const uint8_t icon_width_with_offset = icon->width + icon_h_offset;
    const uint8_t icon_v_offset = icon->height + vertical_offset;
    const uint8_t button_width = string_width + horizontal_offset * 2 + icon_width_with_offset;

    const uint8_t x = (canvas_width(canvas) - button_width) / 2;
    const uint8_t y = canvas_height(canvas);

    canvas_draw_box(canvas, x, y - button_height, button_width, button_height);

    canvas_draw_line(canvas, x - 1, y, x - 1, y - button_height + 0);
    canvas_draw_line(canvas, x - 2, y, x - 2, y - button_height + 1);
    canvas_draw_line(canvas, x - 3, y, x - 3, y - button_height + 2);

    canvas_draw_line(canvas, x + button_width + 0, y, x + button_width + 0, y - button_height + 0);
    canvas_draw_line(canvas, x + button_width + 1, y, x + button_width + 1, y - button_height + 1);
    canvas_draw_line(canvas, x + button_width + 2, y, x + button_width + 2, y - button_height + 2);

    canvas_invert_color(canvas);
    canvas_draw_icon(canvas, x + horizontal_offset, y - icon_v_offset, &I_ButtonCenter_7x7);
    canvas_draw_str(
        canvas, x + horizontal_offset + icon_width_with_offset, y - vertical_offset, str);
    canvas_invert_color(canvas);
}

void elements_multiline_text_aligned(
    Canvas* canvas,
    uint8_t x,
    uint8_t y,
    Align horizontal,
    Align vertical,
    const char* text) {
    furi_assert(canvas);
    furi_assert(text);

    uint8_t font_height = canvas_current_font_height(canvas);
    string_t str;
    string_init(str);
    const char* start = text;
    char* end;

    // get lines count
    uint8_t i, lines_count;
    for(i = 0, lines_count = 0; text[i]; i++) lines_count += (text[i] == '\n');

    switch(vertical) {
    case AlignBottom:
        y -= font_height * lines_count;
        break;
    case AlignCenter:
        y -= (font_height * lines_count) / 2;
        break;
    case AlignTop:
    default:
        break;
    }

    do {
        end = strchr(start, '\n');

        if(end) {
            string_set_strn(str, start, end - start);
        } else {
            string_set_str(str, start);
        }

        uint16_t len_px = canvas_string_width(canvas, string_get_cstr(str));
        uint8_t px_left =
            canvas_width(canvas) - (x - (horizontal == AlignCenter ? len_px / 2 : 0));

        // hacky
        if(len_px > px_left) {
            string_t buff;
            string_init_set(buff, str);
            size_t s_len = string_size(str);
            uint8_t end_pos = s_len - ((len_px - px_left) / (len_px / s_len) + 5);

            string_left(buff, end_pos);
            string_cat(buff, "-");
            string_right(str, end_pos);

            canvas_draw_str_aligned(canvas, x, y, horizontal, vertical, string_get_cstr(buff));
            string_clear(buff);

            start = end + 1;
            y += font_height;
        }

        canvas_draw_str_aligned(canvas, x, y, horizontal, vertical, string_get_cstr(str));
        start = end + 1;
        y += font_height;
    } while(end);
    string_clear(str);
}

void elements_multiline_text(Canvas* canvas, uint8_t x, uint8_t y, const char* text) {
    furi_assert(canvas);
    furi_assert(text);

    uint8_t font_height = canvas_current_font_height(canvas);
    string_t str;
    string_init(str);
    const char* start = text;
    char* end;
    do {
        end = strchr(start, '\n');
        if(end) {
            string_set_strn(str, start, end - start);
        } else {
            string_set_str(str, start);
        }
        canvas_draw_str(canvas, x, y, string_get_cstr(str));
        start = end + 1;
        y += font_height;
    } while(end && y < 64);
    string_clear(str);
}

void elements_multiline_text_framed(Canvas* canvas, uint8_t x, uint8_t y, const char* text) {
    furi_assert(canvas);
    furi_assert(text);

    uint8_t font_y = canvas_current_font_height(canvas);
    uint16_t str_width = canvas_string_width(canvas, text);
    // count \n's
    uint8_t lines = 1;
    const char* t = text;
    while(*t != '\0') {
        if(*t == '\n') {
            lines++;
            uint16_t temp_width = canvas_string_width(canvas, t + 1);
            str_width = temp_width > str_width ? temp_width : str_width;
        }
        t++;
    }

    canvas_set_color(canvas, ColorWhite);
    canvas_draw_box(canvas, x, y - font_y, str_width + 8, font_y * lines + 4);
    canvas_set_color(canvas, ColorBlack);
    elements_multiline_text(canvas, x + 4, y - 1, text);
    elements_frame(canvas, x, y - font_y, str_width + 8, font_y * lines + 4);
}

void elements_slightly_rounded_frame(
    Canvas* canvas,
    uint8_t x,
    uint8_t y,
    uint8_t width,
    uint8_t height) {
    furi_assert(canvas);
    canvas_draw_rframe(canvas, x, y, width, height, 1);
}

void elements_slightly_rounded_box(
    Canvas* canvas,
    uint8_t x,
    uint8_t y,
    uint8_t width,
    uint8_t height) {
    furi_assert(canvas);
    canvas_draw_rbox(canvas, x, y, width, height, 1);
}

void elements_bubble(Canvas* canvas, uint8_t x, uint8_t y, uint8_t width, uint8_t height) {
    furi_assert(canvas);
    canvas_draw_rframe(canvas, x + 4, y, width, height, 3);
    uint8_t y_corner = y + height * 2 / 3;
    canvas_draw_line(canvas, x, y_corner, x + 4, y_corner - 4);
    canvas_draw_line(canvas, x, y_corner, x + 4, y_corner + 4);
    canvas_set_color(canvas, ColorWhite);
    canvas_draw_line(canvas, x + 4, y_corner - 3, x + 4, y_corner + 3);
    canvas_set_color(canvas, ColorBlack);
}

void elements_bubble_str(
    Canvas* canvas,
    uint8_t x,
    uint8_t y,
    const char* text,
    Align horizontal,
    Align vertical) {
    furi_assert(canvas);
    furi_assert(text);

    uint8_t font_y = canvas_current_font_height(canvas);
    uint16_t str_width = canvas_string_width(canvas, text);
    // count \n's
    uint8_t lines = 1;
    const char* t = text;
    while(*t != '\0') {
        if(*t == '\n') {
            lines++;
            uint16_t temp_width = canvas_string_width(canvas, t + 1);
            str_width = temp_width > str_width ? temp_width : str_width;
        }
        t++;
    }

    uint8_t frame_x = x;
    uint8_t frame_y = y;
    uint8_t frame_width = str_width + 8;
    uint8_t frame_height = font_y * lines + 4;

    canvas_set_color(canvas, ColorWhite);
    canvas_draw_box(canvas, frame_x + 1, frame_y + 1, frame_width - 2, frame_height - 2);
    canvas_set_color(canvas, ColorBlack);
    canvas_draw_rframe(canvas, frame_x, frame_y, frame_width, frame_height, 1);
    elements_multiline_text(canvas, x + 4, y - 1 + font_y, text);

    uint8_t x1 = 0;
    uint8_t x2 = 0;
    uint8_t x3 = 0;
    uint8_t y1 = 0;
    uint8_t y2 = 0;
    uint8_t y3 = 0;
    if((horizontal == AlignLeft) && (vertical == AlignTop)) {
        x1 = frame_x;
        y1 = frame_y;
        x2 = frame_x - 4;
        y2 = frame_y;
        x3 = frame_x;
        y3 = frame_y + 4;
        canvas_set_color(canvas, ColorWhite);
        canvas_draw_box(canvas, x2 + 2, y2 + 1, 2, 2);
        canvas_set_color(canvas, ColorBlack);
    } else if((horizontal == AlignLeft) && (vertical == AlignCenter)) {
        x1 = frame_x;
        y1 = frame_y + (frame_height - 1) / 2 - 4;
        x2 = frame_x - 4;
        y2 = frame_y + (frame_height - 1) / 2;
        x3 = frame_x;
        y3 = frame_y + (frame_height - 1) / 2 + 4;
        canvas_set_color(canvas, ColorWhite);
        canvas_draw_box(canvas, x2 + 2, y2 - 2, 2, 5);
        canvas_draw_dot(canvas, x2 + 1, y2);
        canvas_set_color(canvas, ColorBlack);
    } else if((horizontal == AlignLeft) && (vertical == AlignBottom)) {
        x1 = frame_x;
        y1 = frame_y + (frame_height - 1) - 4;
        x2 = frame_x - 4;
        y2 = frame_y + (frame_height - 1);
        x3 = frame_x;
        y3 = frame_y + (frame_height - 1);
        canvas_set_color(canvas, ColorWhite);
        canvas_draw_box(canvas, x2 + 2, y2 - 2, 2, 2);
        canvas_set_color(canvas, ColorBlack);
    } else if((horizontal == AlignRight) && (vertical == AlignTop)) {
        x1 = frame_x + (frame_width - 1);
        y1 = frame_y;
        x2 = frame_x + (frame_width - 1) + 4;
        y2 = frame_y;
        x3 = frame_x + (frame_width - 1);
        y3 = frame_y + 4;
        canvas_set_color(canvas, ColorWhite);
        canvas_draw_box(canvas, x2 - 3, y2 + 1, 2, 2);
        canvas_set_color(canvas, ColorBlack);
    } else if((horizontal == AlignRight) && (vertical == AlignCenter)) {
        x1 = frame_x + (frame_width - 1);
        y1 = frame_y + (frame_height - 1) / 2 - 4;
        x2 = frame_x + (frame_width - 1) + 4;
        y2 = frame_y + (frame_height - 1) / 2;
        x3 = frame_x + (frame_width - 1);
        y3 = frame_y + (frame_height - 1) / 2 + 4;
        canvas_set_color(canvas, ColorWhite);
        canvas_draw_box(canvas, x2 - 3, y2 - 2, 2, 5);
        canvas_draw_dot(canvas, x2 - 1, y2);
        canvas_set_color(canvas, ColorBlack);
    } else if((horizontal == AlignRight) && (vertical == AlignBottom)) {
        x1 = frame_x + (frame_width - 1);
        y1 = frame_y + (frame_height - 1) - 4;
        x2 = frame_x + (frame_width - 1) + 4;
        y2 = frame_y + (frame_height - 1);
        x3 = frame_x + (frame_width - 1);
        y3 = frame_y + (frame_height - 1);
        canvas_set_color(canvas, ColorWhite);
        canvas_draw_box(canvas, x2 - 3, y2 - 2, 2, 2);
        canvas_set_color(canvas, ColorBlack);
    } else if((horizontal == AlignCenter) && (vertical == AlignTop)) {
        x1 = frame_x + (frame_width - 1) / 2 - 4;
        y1 = frame_y;
        x2 = frame_x + (frame_width - 1) / 2;
        y2 = frame_y - 4;
        x3 = frame_x + (frame_width - 1) / 2 + 4;
        y3 = frame_y;
        canvas_set_color(canvas, ColorWhite);
        canvas_draw_box(canvas, x2 - 2, y2 + 2, 5, 2);
        canvas_draw_dot(canvas, x2, y2 + 1);
        canvas_set_color(canvas, ColorBlack);
    } else if((horizontal == AlignCenter) && (vertical == AlignBottom)) {
        x1 = frame_x + (frame_width - 1) / 2 - 4;
        y1 = frame_y + (frame_height - 1);
        x2 = frame_x + (frame_width - 1) / 2;
        y2 = frame_y + (frame_height - 1) + 4;
        x3 = frame_x + (frame_width - 1) / 2 + 4;
        y3 = frame_y + (frame_height - 1);
        canvas_set_color(canvas, ColorWhite);
        canvas_draw_box(canvas, x2 - 2, y2 - 3, 5, 2);
        canvas_draw_dot(canvas, x2, y2 - 1);
        canvas_set_color(canvas, ColorBlack);
    }

    canvas_set_color(canvas, ColorWhite);
    canvas_draw_line(canvas, x3, y3, x1, y1);
    canvas_set_color(canvas, ColorBlack);
    canvas_draw_line(canvas, x1, y1, x2, y2);
    canvas_draw_line(canvas, x2, y2, x3, y3);
}

void elements_string_fit_width(Canvas* canvas, string_t string, uint8_t width) {
    furi_assert(canvas);
    furi_assert(string);

    uint16_t len_px = canvas_string_width(canvas, string_get_cstr(string));
    if(len_px > width) {
        width -= canvas_string_width(canvas, "...");
        do {
            string_left(string, string_size(string) - 1);
            len_px = canvas_string_width(canvas, string_get_cstr(string));
        } while(len_px > width);
        string_cat(string, "...");
    }
}

void elements_text_box(
    Canvas* canvas,
    uint8_t x,
    uint8_t y,
    uint8_t width,
    uint8_t height,
    Align horizontal,
    Align vertical,
    const char* text) {
    furi_assert(canvas);

    ElementTextBoxLine line[ELEMENTS_MAX_LINES_NUM];
    bool bold = false;
    bool mono = false;
    bool inversed = false;
    bool inversed_present = false;
    Font current_font = FontSecondary;
    Font prev_font = FontSecondary;
    CanvasFontParameters* font_params = canvas_get_font_params(canvas, current_font);

    // Fill line parameters
    uint8_t line_leading_min = font_params->leading_min;
    uint8_t line_leading_default = font_params->leading_default;
    uint8_t line_height = font_params->height;
    uint8_t line_descender = font_params->descender;
    uint8_t line_num = 0;
    uint8_t line_width = 0;
    uint8_t line_len = 0;
    uint8_t total_height_min = 0;
    uint8_t total_height_default = 0;
    uint16_t i = 0;
    bool full_text_processed = false;

    canvas_set_font(canvas, FontSecondary);

    // Fill all lines
    line[0].text = text;
    for(i = 0; !full_text_processed; i++) {
        line_len++;
        // Identify line height
        if(prev_font != current_font) {
            font_params = canvas_get_font_params(canvas, current_font);
            line_leading_min = MAX(line_leading_min, font_params->leading_min);
            line_leading_default = MAX(line_leading_default, font_params->leading_default);
            line_height = MAX(line_height, font_params->height);
            line_descender = MAX(line_descender, font_params->descender);
            prev_font = current_font;
        }
        // Set the font
        if(text[i] == '\e' && text[i + 1]) {
            i++;
            line_len++;
            if(text[i] == ELEMENTS_BOLD_MARKER) {
                if(bold) {
                    current_font = FontSecondary;
                } else {
                    current_font = FontPrimary;
                }
                canvas_set_font(canvas, current_font);
                bold = !bold;
            }
            if(text[i] == ELEMENTS_MONO_MARKER) {
                if(mono) {
                    current_font = FontSecondary;
                } else {
                    current_font = FontKeyboard;
                }
                canvas_set_font(canvas, FontKeyboard);
                mono = !mono;
            }
            if(text[i] == ELEMENTS_INVERSED_MARKER) {
                inversed_present = true;
            }
            continue;
        }
        if(text[i] != '\n') {
            line_width += canvas_glyph_width(canvas, text[i]);
        }
        // Process new line
        if(text[i] == '\n' || text[i] == '\0' || line_width > width) {
            if(line_width > width) {
                line_width -= canvas_glyph_width(canvas, text[i--]);
                line_len--;
            }
            if(text[i] == '\0') {
                full_text_processed = true;
            }
            if(inversed_present) {
                line_leading_min += 1;
                line_leading_default += 1;
                inversed_present = false;
            }
            line[line_num].leading_min = line_leading_min;
            line[line_num].leading_default = line_leading_default;
            line[line_num].height = line_height;
            line[line_num].descender = line_descender;
            if(total_height_min + line_leading_min > height) {
                line_num--;
                break;
            }
            total_height_min += line_leading_min;
            total_height_default += line_leading_default;
            line[line_num].len = line_len;
            if(horizontal == AlignCenter) {
                line[line_num].x = x + (width - line_width) / 2;
            } else if(horizontal == AlignRight) {
                line[line_num].x = x + (width - line_width);
            } else {
                line[line_num].x = x;
            }
            line[line_num].y = total_height_min;
            line_num++;
            if(text[i + 1]) {
                line[line_num].text = &text[i + 1];
            }

            line_leading_min = font_params->leading_min;
            line_height = font_params->height;
            line_descender = font_params->descender;
            line_width = 0;
            line_len = 0;
        }
    }

    // Set vertical alignment for all lines
    if(full_text_processed) {
        if(total_height_default < height) {
            if(vertical == AlignTop) {
                line[0].y = y + line[0].height;
            } else if(vertical == AlignCenter) {
                line[0].y = y + line[0].height + (height - total_height_default) / 2;
            } else if(vertical == AlignBottom) {
                line[0].y = y + line[0].height + (height - total_height_default);
            }
            if(line_num > 1) {
                for(uint8_t i = 1; i < line_num; i++) {
                    line[i].y = line[i - 1].y + line[i - 1].leading_default;
                }
            }
        } else if(line_num > 1) {
            uint8_t free_pixel_num = height - total_height_min;
            uint8_t fill_pixel = 0;
            uint8_t j = 1;
            line[0].y = line[0].height;
            while(fill_pixel < free_pixel_num) {
                line[j].y = line[j - 1].y + line[j - 1].leading_min + 1;
                fill_pixel++;
                j = j % (line_num - 1) + 1;
            }
        }
    }

    // Draw line by line
    canvas_set_font(canvas, FontSecondary);
    bold = false;
    mono = false;
    inversed = false;
    for(uint8_t i = 0; i < line_num; i++) {
        for(uint8_t j = 0; j < line[i].len; j++) {
            // Process format symbols
            if(line[i].text[j] == ELEMENTS_BOLD_MARKER) {
                if(bold) {
                    current_font = FontSecondary;
                } else {
                    current_font = FontPrimary;
                }
                canvas_set_font(canvas, current_font);
                bold = !bold;
                continue;
            }
            if(line[i].text[j] == ELEMENTS_MONO_MARKER) {
                if(mono) {
                    current_font = FontSecondary;
                } else {
                    current_font = FontKeyboard;
                }
                canvas_set_font(canvas, current_font);
                mono = !mono;
                continue;
            }
            if(line[i].text[j] == ELEMENTS_INVERSED_MARKER) {
                inversed = !inversed;
                continue;
            }
            if(inversed) {
                canvas_draw_box(
                    canvas,
                    line[i].x - 1,
                    line[i].y - line[i].height - 1,
                    canvas_glyph_width(canvas, line[i].text[j]) + 1,
                    line[i].height + line[i].descender + 2);
                canvas_invert_color(canvas);
                canvas_draw_glyph(canvas, line[i].x, line[i].y, line[i].text[j]);
                canvas_invert_color(canvas);
            } else {
                canvas_draw_glyph(canvas, line[i].x, line[i].y, line[i].text[j]);
            }
            line[i].x += canvas_glyph_width(canvas, line[i].text[j]);
        }
    }
    canvas_set_font(canvas, FontSecondary);
}