VGA/MouseOnScreen/MouseOnScreen.ino

PS/2 mouse and mouse pointer on screen

/*
  Created by Fabrizio Di Vittorio (fdivitto2013@gmail.com) - <http://www.fabgl.com>
  Copyright (c) 2019-2022 Fabrizio Di Vittorio.
  All rights reserved.
 
 
* Please contact fdivitto2013@gmail.com if you need a commercial license.
 
 
* This library and related software is available under GPL v3.
 
  FabGL is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.
 
  FabGL is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.
 
  You should have received a copy of the GNU General Public License
  along with FabGL.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 
#include "fabgl.h"
 
 
fabgl::VGAController DisplayController;
fabgl::Canvas        canvas(&DisplayController);
fabgl::PS2Controller PS2Controller;
 
 
int indicatorX = 300;
int indicatorY = 170;
int cursor     = 0;
 
 
void showCursorPos(MouseStatus const & status)
{
  canvas.setPenColor(Color::Blue);
  canvas.setBrushColor(Color::Yellow);
  canvas.drawTextFmt(indicatorX, indicatorY, " %d %d ", status.X, status.Y);
}
 
 
void setup()
{
  DisplayController.begin();
  DisplayController.setResolution(VGA_640x350_70HzAlt1);
  //DisplayController.setResolution(VGA_640x240_60Hz);    // select to have more free memory
 
  // Setup mouse
  PS2Controller.begin();
  PS2Controller.mouse()->setupAbsolutePositioner(canvas.getWidth(), canvas.getHeight(), true, &DisplayController);
  DisplayController.setMouseCursor((CursorName)cursor);
 
  canvas.setBrushColor(Color::Blue);
  canvas.clear();
  canvas.selectFont(&fabgl::FONT_8x8);
  canvas.setGlyphOptions(GlyphOptions().FillBackground(true));
 
  showCursorPos(PS2Controller.mouse()->status());
}
 
 
void loop()
{
  MouseStatus status = PS2Controller.mouse()->getNextStatus(-1); // -1 = blocking operation
 
  // left button writes pixels
  if (status.buttons.left) {
    canvas.setPenColor(Color::BrightRed);
    canvas.setPixel(status.X, status.Y);
    canvas.moveTo(status.X, status.Y);
  }
 
  // right button change mouse shape
  if (status.buttons.right) {
    cursor = ((CursorName)cursor == CursorName::CursorTextInput ? 0 : cursor + 1);
    DisplayController.setMouseCursor((CursorName)cursor);
  }
 
  // middle button clear screen
  if (status.buttons.middle) {
    canvas.setBrushColor(Color::Blue);
    canvas.clear();
  }
 
  // mouse wheel moves cursor position indicator
  if (status.wheelDelta != 0) {
    indicatorY = fabgl::tclamp(indicatorY + status.wheelDelta, 0, canvas.getHeight() - 16);
    PS2Controller.mouse()->status().wheelDelta = 0;
    canvas.setBrushColor(Color::Blue);
    canvas.clear();
  }
 
  showCursorPos(status);
}