FlippyPass/project/ui.c

// Header
#include "ui.h"

// Functions
uiManager* ui_create() {
    // Creating the UI Manager
    uiManager* result = malloc(sizeof(uiManager));

    // Defining basic variables
    result->running = true;
    result->selection = 0;
    result->page = 0;

    result->press_avail = true;
    result->press_used = false;

    // Creating a GUI
    result->gui = furi_record_open(RECORD_GUI);

    // Creating a canvas
    result->canvas = view_port_alloc();
    view_port_draw_callback_set(result->canvas, ui_draw, result);
    view_port_input_callback_set(result->canvas, ui_input, result);
    gui_add_view_port(result->gui, result->canvas, GuiLayerFullscreen);

    // Returning the UI Manager
    return result;
}

void ui_input(InputEvent* event, void* ctx) {
    // Turning the context back into the UI Manager
    uiManager* manager = (uiManager*)ctx;

    // Getting input
    if (event->type == InputTypePress
    && manager->press_avail) {
        manager->press_avail = false;
        manager->press_used = true;
        
        switch(event->key) {
        case InputKeyUp:
            manager->input = Up;
            break;
        case InputKeyDown:
            manager->input = Down;
            break;
        case InputKeyLeft:
            manager->input = Left;
            break;
        case InputKeyRight:
            manager->input = Right;
            break;
        case InputKeyOk:
            manager->input = Ok;
            break;
        case InputKeyBack:
            manager->input = Back;
            break;
        default:
            break;
        }
    } else if (event->type == InputTypeRelease) {
        manager->press_avail = true;
    }
}

void ui_draw(Canvas* canvas, void* ctx) {
    // Context into Result
    uiManager* manager = (uiManager*)ctx;

    // Switching page
    switch(manager->page){
    case 0: // Main Menu
        ui_p_mainmenu(canvas, manager);
        break;
    case 1: // About Me
        ui_p_about(canvas);
        break;
    }
}
void ui_p_mainmenu(Canvas* canvas, uiManager* manager) {
    // Menu Options
    canvas_set_font(canvas, FontPrimary);
    canvas_draw_str(canvas, 2, 11, "FlippyPass");

    canvas_set_font(canvas, FontSecondary);
    canvas_draw_str(canvas, 22, 25, "View Passwords");

    canvas_set_font(canvas, FontSecondary);
    canvas_draw_str(canvas, 22, 35, "View Archive");

    canvas_set_font(canvas, FontSecondary);
    canvas_draw_str(canvas, 22, 45, "Create Password");

    canvas_set_font(canvas, FontSecondary);
    canvas_draw_str(canvas, 22, 55, "About");

    // Cursor
    if(manager->press_used) {
        // We used a press
        manager->press_used = false;

        // Reacting
        switch (manager->input){
        case Up:
            manager->selection--;
            break;
        case Down:
            manager->selection++;
            break;
        case Ok:
            
            switch(manager->selection) {
            case 3: // About Me
                manager->page = 1;
                break;
            default:
                break;
            }

            break;
        default:
            break;
        }

        // Min & Max
        if (manager->selection > 3) {
            manager->selection = 0;
        } else if (manager->selection < 0) {
            manager->selection = 3;
        }
    }

    // Placing the spot at the cursor
    canvas_draw_box(canvas, 15, 20 + (manager->selection * 10), 2, 2);
}
void ui_p_about(Canvas* canvas) {
    canvas_set_font(canvas, FontPrimary);
    canvas_draw_str(canvas, 2, 11, "FlippyPass");

    canvas_set_font(canvas, FontSecondary);
    canvas_draw_str(canvas, 3, 23, "A really easy to use Password");

    canvas_set_font(canvas, FontSecondary);
    canvas_draw_str(canvas, 3, 32, "Manager for the Flipper-Zero.");
}

void ui_delete(uiManager* manager) {
    view_port_enabled_set(manager->canvas, false);
    gui_remove_view_port(manager->gui, manager->canvas);
    view_port_free(manager->canvas);
    furi_record_close(RECORD_GUI);
    free(manager);
}