float p = 3.1415926;

typedef struct {
    uint8_t width;
    uint8_t height;
    const uint8_t *data;
} bitmap_t;

/*const uint8_t PROGMEM dvdlogo_data[] = {
    B00001111, B11111111, B11111100, B00000011, B11111111, B11000000,
    B00001111, B11111111, B11111100, B00000011, B11111111, B11111000,
    B00000000, B00111111, B11111100, B00000111, B11100001, B11111110,
    B00000000, B00000111, B11011110, B00001111, B00000000, B00111110,
    B00011110, B00000011, B11011110, B00011110, B01111000, B00011111,
    B00011110, B00000011, B11011110, B00111100, B01111000, B00011111,
    B00011110, B00000011, B11001111, B00111100, B11111000, B00011110,
    B00011110, B00000111, B11001111, B01111000, B11110000, B00011110,
    B00111110, B00001111, B10000111, B11110000, B11110000, B00111100, 
    B00111110, B00111111, B00000111, B11100000, B11110000, B11111000, 
    B00111111, B11111100, B00000111, B11000000, B11111111, B11110000, 
    B00111111, B11110000, B00000011, B10000001, B11111111, B10000000, 
    B00000000, B00000000, B00000011, B10000000, B00000000, B00000000, 
    B00000000, B00000000, B00000011, B00000000, B00000000, B00000000, 
    B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, 
    B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, 
    B00000001, B11111111, B11111111, B11111111, B11111100, B00000000, 
    B00111111, B11111111, B11100000, B01111111, B11111111, B11100000, 
    B11111111, B11111111, B10000000, B00011111, B11111111, B11111000, 
    B01111111, B11111111, B10000000, B00111111, B11111111, B11110000, 
    B00000111, B11111111, B11111111, B11111111, B11111111, B00000000, 
    B00000000, B00000011, B11111111, B11111110, B00000000, B00000000 };*/

/* DVD logo */
static PROGMEM bitmap_t dvdlogo = {
    .width = 48,
    .height = 22,
    .data  = (PROGMEM uint8_t[]) {
        B00001111, B11111111, B11111100, B00000011, B11111111, B11000000,
        B00001111, B11111111, B11111100, B00000011, B11111111, B11111000,
        B00000000, B00111111, B11111100, B00000111, B11100001, B11111110,
        B00000000, B00000111, B11011110, B00001111, B00000000, B00111110,
        B00011110, B00000011, B11011110, B00011110, B01111000, B00011111,
        B00011110, B00000011, B11011110, B00111100, B01111000, B00011111,
        B00011110, B00000011, B11001111, B00111100, B11111000, B00011110,
        B00011110, B00000111, B11001111, B01111000, B11110000, B00011110,
        B00111110, B00001111, B10000111, B11110000, B11110000, B00111100,
        B00111110, B00111111, B00000111, B11100000, B11110000, B11111000,
        B00111111, B11111100, B00000111, B11000000, B11111111, B11110000,
        B00111111, B11110000, B00000011, B10000001, B11111111, B10000000,
        B00000000, B00000000, B00000011, B10000000, B00000000, B00000000,
        B00000000, B00000000, B00000011, B00000000, B00000000, B00000000,
        B00000000, B00000000, B00000000, B00000000, B00000000, B00000000,
        B00000000, B00000000, B00000000, B00000000, B00000000, B00000000,
        B00000001, B11111111, B11111111, B11111111, B11111100, B00000000,
        B00111111, B11111111, B11100000, B01111111, B11111111, B11100000,
        B11111111, B11111111, B10000000, B00011111, B11111111, B11111000,
        B01111111, B11111111, B10000000, B00111111, B11111111, B11110000,
        B00000111, B11111111, B11111111, B11111111, B11111111, B00000000,
        B00000000, B00000011, B11111111, B11111110, B00000000, B00000000
    }
};

void testlines(uint16_t color) {
    screen.fillScreen(BLACK);
    for (uint16_t x = 0; x < screen.width() - 1; x += 6) {
        screen.drawLine(0, 0, x, screen.height() - 1, color);
    }
    for (uint16_t y = 0; y < screen.height() - 1; y += 6) {
        screen.drawLine(0, 0, screen.width() - 1, y, color);
    }

    screen.fillScreen(BLACK);
    for (uint16_t x = 0; x < screen.width() - 1; x += 6) {
        screen.drawLine(screen.width() - 1, 0, x, screen.height() - 1, color);
    }
    for (uint16_t y = 0; y < screen.height() - 1; y += 6) {
        screen.drawLine(screen.width() - 1, 0, 0, y, color);
    }

    screen.fillScreen(BLACK);
    for (uint16_t x = 0; x < screen.width() - 1; x += 6) {
        screen.drawLine(0, screen.height() - 1, x, 0, color);
    }
    for (uint16_t y = 0; y < screen.height() - 1; y += 6) {
        screen.drawLine(0, screen.height() - 1, screen.width() - 1, y, color);
    }

    screen.fillScreen(BLACK);
    for (uint16_t x = 0; x < screen.width() - 1; x += 6) {
        screen.drawLine(screen.width() - 1, screen.height() - 1, x, 0, color);
    }
    for (uint16_t y = 0; y < screen.height() - 1; y += 6) {
        screen.drawLine(screen.width() - 1, screen.height() - 1, 0, y, color);
    }

}

void testdrawtext(const char *text, uint16_t color) {
    screen.setCursor(0, 0);
    screen.setTextColor(color);
    screen.print(text);
}

void testfastlines(uint16_t color1, uint16_t color2) {
    screen.fillScreen(BLACK);
    for (uint16_t y = 0; y < screen.height() - 1; y += 5) {
        screen.drawFastHLine(0, y, screen.width() - 1, color1);
    }
    for (uint16_t x = 0; x < screen.width() - 1; x += 5) {
        screen.drawFastVLine(x, 0, screen.height() - 1, color2);
    }
}

void testdrawrects(uint16_t color) {
    screen.fillScreen(BLACK);
    for (uint16_t x = 0; x < screen.height() - 1; x += 6) {
        screen.drawRect((screen.width() - 1) / 2 - x / 2, (screen.height() - 1) / 2 - x / 2, x, x, color);
    }
}

void testfillrects(uint16_t color1, uint16_t color2) {
    screen.fillScreen(BLACK);
    for (uint16_t x = screen.height() - 1; x > 6; x -= 6) {
        screen.fillRect((screen.width() - 1) / 2 - x / 2, (screen.height() - 1) / 2 - x / 2, x, x, color1);
        screen.drawRect((screen.width() - 1) / 2 - x / 2, (screen.height() - 1) / 2 - x / 2, x, x, color2);
    }
}

void testfillcircles(uint8_t radius, uint16_t color) {
    for (uint8_t x = radius; x < screen.width() - 1; x += radius * 2) {
        for (uint8_t y = radius; y < screen.height() - 1; y += radius * 2) {
            screen.fillCircle(x, y, radius, color);
        }
    }
}

void testdrawcircles(uint8_t radius, uint16_t color) {
    for (uint8_t x = 0; x < screen.width() - 1 + radius; x += radius * 2) {
        for (uint8_t y = 0; y < screen.height() - 1 + radius; y += radius * 2) {
            screen.drawCircle(x, y, radius, color);
        }
    }
}

void testtriangles() {
    screen.fillScreen(BLACK);
    int color = 0xF800;
    int t;
    int w = screen.width() / 2;
    int x = screen.height();
    int y = 0;
    int z = screen.width();
    for (t = 0; t <= 15; t += 1) {
        screen.drawTriangle(w, y, y, x, z, x, color);
        x -= 4;
        y += 4;
        z -= 4;
        color += 100;
    }
}

void testroundrects() {
    screen.fillScreen(BLACK);
    int color = 100;

    int x = 0;
    int y = 0;
    int w = screen.width();
    int h = screen.height();
    for (int i = 0; i <= 24; i++) {
        screen.drawRoundRect(x, y, w, h, 5, color);
        x += 2;
        y += 3;
        w -= 4;
        h -= 6;
        color += 1100;
        Serial.println(i);
    }
}

void oledPrintTest() {
    screen.fillScreen(BLACK);
    screen.setCursor(0, 5);
    screen.setTextColor(RED);
    screen.setTextSize(1);
    screen.println("Hello World!");
    screen.setTextColor(YELLOW);
    screen.setTextSize(2);
    screen.println("Hello World!");
    screen.setTextColor(BLUE);
    screen.setTextSize(3);
    screen.print(1234.567);
    delay(1500);
    screen.setCursor(0, 5);
    screen.fillScreen(BLACK);
    screen.setTextColor(WHITE);
    screen.setTextSize(0);
    screen.println("Hello World!");
    screen.setTextSize(1);
    screen.setTextColor(GREEN);
    screen.print(p, 6);
    screen.println(" Want pi?");
    screen.println(" ");
    screen.print(8675309, HEX); // print 8,675,309 out in HEX!
    screen.println(" Print HEX!");
    screen.println(" ");
    screen.setTextColor(WHITE);
    screen.println("Sketch has been");
    screen.println("running for: ");
    screen.setTextColor(MAGENTA);
    screen.print(millis() / 1000);
    screen.setTextColor(WHITE);
    screen.print(" seconds.");
}

void mediabuttons() {
    // play
    screen.fillScreen(BLACK);
    screen.fillRoundRect(25, 10, 78, 60, 8, WHITE);
    screen.fillTriangle(42, 20, 42, 60, 90, 40, RED);
    delay(500);
    // pause
    screen.fillRoundRect(25, 90, 78, 60, 8, WHITE);
    screen.fillRoundRect(39, 98, 20, 45, 5, GREEN);
    screen.fillRoundRect(69, 98, 20, 45, 5, GREEN);
    delay(500);
    // play color
    screen.fillTriangle(42, 20, 42, 60, 90, 40, BLUE);
    delay(50);
    // pause color
    screen.fillRoundRect(39, 98, 20, 45, 5, RED);
    screen.fillRoundRect(69, 98, 20, 45, 5, RED);
    // play color
    screen.fillTriangle(42, 20, 42, 60, 90, 40, GREEN);
}

/**************************************************************************/
/*! 
    @brief  Renders a simple test pattern on the screen
*/
/**************************************************************************/
void lcdTestPattern(void) {
    static const uint16_t PROGMEM colors[] =
        {RED, YELLOW, GREEN, CYAN, BLUE, MAGENTA, BLACK, WHITE};

    for (uint8_t c = 0; c < 8; c++) {
        screen.fillRect(0, screen.height() * c / 8, screen.width(), screen.height() / 8,
                        pgm_read_word(&colors[c]));
    }
}