UIDisplay.h

// SPDX-License-Identifier: BSD-2-Clause
// (C) 2022-2023 Dirk Hillbrecht, Andrew Burks
 
#pragma once
 
#include "Arduino.h"
#include <U8g2lib.h>
 
#include "UIArea.h"
#include "UIWidget.h"
#include "UIParent.h"
 
class UIDisplay: public UIParent {
 
  public:
 
    UIDisplay(UIWidget* root);
 
    void init(U8G2* display,bool enable=true,bool render=true);
 
    void setUpdateTiles(uint16_t maxFirstUpdateTiles=0xffff,uint16_t maxFollowUpdateTiles=0xffff);
 
    void enable(U8G2* display,bool render=false,bool force=false);
 
    void disable(U8G2* display);
 
    void deactivate();
 
    void activate();
 
    void childNeedsRendering(UIWidget *child);
 
    void render(U8G2* display,bool force=false);
 
    bool isUpdatingDisplay();
 
  private:
 
    UIWidget* root;
 
    bool enabled;
 
    bool active;
 
    bool renderingNeeded;
 
    uint16_t maxFirstUpdateTiles;
 
    uint16_t maxFollowUpdateTiles;
 
    UIArea updateTiles;
 
    UIArea furtherUpdateTiles;
 
    void doUpdateTiles(U8G2 *display,uint16_t maxUpdateTiles);
    
    
    void computeTileAreaFromPixelArea(U8G2 *display, UIArea * pixelArea, UIArea * tileArea);
 
};
 
// end of file