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https://gitlab.com/c3d/db48x.git
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a8e0a48f5d
This is a simple small-scale test that uses the new graphics routine to clear the screen with a gray-scale pattern. Signed-off-by: Christophe de Dinechin <christophe@dinechin.org>
146 lines
4 KiB
C++
146 lines
4 KiB
C++
// ****************************************************************************
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// screen.cpp DB48X project
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// ****************************************************************************
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//
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// File Description:
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//
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//
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//
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//
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//
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//
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//
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//
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//
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//
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// ****************************************************************************
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// (C) 2022 Christophe de Dinechin <christophe@dinechin.org>
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// This software is licensed under the terms outlined in LICENSE.txt
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// ****************************************************************************
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// This file is part of DB48X.
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//
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// DB48X is free software: you can redistribute it and/or modify
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// it under the terms outlined in the LICENSE.txt file
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//
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// DB48X is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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// ****************************************************************************
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#include "sim-screen.h"
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#include <QBitmap>
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#include <QGraphicsPixmapItem>
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#include <QTimer>
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#include <dmcp.h>
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#include <target.h>
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SimScreen::SimScreen(QWidget *parent)
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// ----------------------------------------------------------------------------
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// Initialize the screen
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// ----------------------------------------------------------------------------
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: QGraphicsView(parent),
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screen_width(LCD_W),
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screen_height(LCD_H),
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scale(1),
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bgColor(230, 230, 230),
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fgColor(0, 0, 0),
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bgPen(bgColor),
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fgPen(fgColor),
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screenTimer(new QTimer(this)),
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mainPixmap(LCD_W, LCD_H)
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{
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connect(&screenTimer, SIGNAL(timeout()), this, SLOT(update()));
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screenTimer.setSingleShot(true);
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screenTimer.start(20);
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screen.clear();
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screen.setBackgroundBrush(QBrush(Qt::black));
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mainScreen = screen.addPixmap(mainPixmap);
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mainScreen->setOffset(0.0, 0.0);
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setScene(&screen);
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setSceneRect(0, -5, screen_width, screen_height + 5);
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centerOn(qreal(screen_width) / 2, qreal(screen_height) / 2);
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scale = 1.0;
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setScale(4.0);
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show();
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}
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SimScreen::~SimScreen()
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// ----------------------------------------------------------------------------
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// SimScreen destructor
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// ----------------------------------------------------------------------------
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{
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}
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void SimScreen::setPixel(int x, int y, int on)
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// ----------------------------------------------------------------------------
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// Set the given screen
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// ----------------------------------------------------------------------------
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{
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// Pixels[offset]->setBrush(GrayBrush[color & 15]);
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QPainter pt(&mainPixmap);
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pt.setPen(on ? fgPen : bgPen);
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pt.drawPoint(LCD_W - x, y);
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pt.end();
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}
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void SimScreen::setScale(qreal sf)
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// ----------------------------------------------------------------------------
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// Adjust the scaling factor
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// ----------------------------------------------------------------------------
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{
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QGraphicsView::scale(sf / scale, sf / scale);
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this->scale = sf;
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QSize s;
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s.setWidth(0);
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s.setHeight((screen_height + 5) * scale);
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setMinimumSize(s);
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}
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void SimScreen::update()
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// ----------------------------------------------------------------------------
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// Refresh the screen
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// ----------------------------------------------------------------------------
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{
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if (lcd_needsupdate != lcd_update)
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{
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lcd_update = lcd_needsupdate;
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}
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else
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{
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screenTimer.setSingleShot(true);
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screenTimer.start(20);
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return;
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}
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// Monochrome screen
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screen.setBackgroundBrush(QBrush(fgColor));
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QPainter pt(&mainPixmap);
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for (int y = 0; y < LCD_H; y++)
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{
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for (int x = 0; x < LCD_W; x++)
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{
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unsigned bo = y * LCD_SCANLINE + x;
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int on = (lcd_buffer[bo/8] >> (bo % 8)) & 1;
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pt.setPen(on ? bgPen : fgPen);
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pt.drawPoint(LCD_W - x, y);
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}
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}
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pt.end();
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mainScreen->setPixmap(mainPixmap);
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QGraphicsView::update();
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screenTimer.setSingleShot(true);
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screenTimer.start(20);
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}
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