Virtual frame or virtual canvas

[K0rkunc]

Hello, instead of writing each message to the screen one by one, I want to create one or more virtual screens and be able to switch between them on the physical screen at desired intervals. Is there a way to achieve this?

[Lukaswnd]

The library has no support for that. You could write a canvas class, like the one below I use. The Idea is to create a Buffer, which you can write your text to and later get the data pointer and use it as an image to draw the whole thing to the matrix.
Pro: - you don't need to interpret the font each time you make it.
Con: - still need to put each Pixel to the matrix
- takes up a lot of memory. You basicly have to use external PSRAM to keep multiple and/or large canvas in memory

Make sure to use your GFX implementation and replace the datatypes like color_t to uint16_t etc..

class MemoryDisplay : public GFX{

    color_t* m_data = nullptr;

public:

    MemoryDisplay(dimen_t width, dimen_t height, bool external);
    
    void writePixel(coord_t x, coord_t y, color_t color) override;

    void writeFastHLine(coord_t x, coord_t y, dimen_t w, color_t color) override;
    void fillScreen(color_t color) override;

    inline color_t* getData() const { return m_data; }

};