64 lines
1.3 KiB
C++
64 lines
1.3 KiB
C++
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#include "graphicscache.h"
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#include <QPainter>
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namespace
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{
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void halfScanLines(QPixmap & charset)
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{
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const int height = charset.height();
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const int width = charset.width();
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const QColor background = charset.toImage().pixelColor(0, height - 1);
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QPainter paint(&charset);
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paint.setPen(background);
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for (int i = 0; i < height; i += 2)
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{
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paint.drawLine(0, i, width - 1, i);
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}
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}
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QPixmap buildHiResMono()
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{
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const QColor black(Qt::black);
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const QColor white(Qt::white);
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QPixmap hires(14, 128 * 2);
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hires.fill(black);
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QPainter painter(&hires);
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for (int i = 0; i < 128; ++i)
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{
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for (int j = 0; j < 7; ++j)
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{
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if (i & (1 << j))
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{
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painter.setPen(white);
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}
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else
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{
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painter.setPen(black);
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}
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painter.drawLine(j * 2, i * 2, j * 2 + 2, i * 2);
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}
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}
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return hires;
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}
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}
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GraphicsCache::GraphicsCache()
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{
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myCharset40.load(":/resources/CHARSET4.BMP");
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halfScanLines(myCharset40);
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myCharset80 = myCharset40.scaled(myCharset40.width() / 2, myCharset40.height());
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myHiResMono = buildHiResMono();
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}
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