mirror of https://github.com/mgba-emu/mgba.git
Qt: Optimize drawing in MemoryModel
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e3cc98e034
commit
10d5588d4c
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@ -30,6 +30,22 @@ MemoryModel::MemoryModel(QWidget* parent)
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m_cellHeight = metrics.height();
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m_cellHeight = metrics.height();
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m_letterWidth = metrics.averageCharWidth();
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m_letterWidth = metrics.averageCharWidth();
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for (int i = 0; i < 256; ++i) {
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QStaticText str(QString("%0").arg(i, 2, 16, QChar('0')).toUpper());
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str.prepare(QTransform(), m_font);
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m_staticNumbers.append(str);
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}
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for (int i = 0; i < 128; ++i) {
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QChar c(0xFFFD);
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if (c.isPrint()) {
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c = i;
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}
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QStaticText str = QStaticText(QString(c));
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str.prepare(QTransform(), m_font);
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m_staticAscii.append(str);
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}
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setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
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setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
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setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
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setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
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m_margins = QMargins(metrics.width("FFFFFF ") + 3, m_cellHeight + 1, metrics.width(" AAAAAAAAAAAAAAAA") + 3, 0);
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m_margins = QMargins(metrics.width("FFFFFF ") + 3, m_cellHeight + 1, metrics.width(" AAAAAAAAAAAAAAAA") + 3, 0);
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@ -69,13 +85,8 @@ void MemoryModel::paintEvent(QPaintEvent* event) {
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painter.drawText(QRectF(QPointF(0, yp), QSizeF(m_margins.left(), m_cellHeight)), Qt::AlignHCenter, data);
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painter.drawText(QRectF(QPointF(0, yp), QSizeF(m_margins.left(), m_cellHeight)), Qt::AlignHCenter, data);
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for (int x = 0; x < 16; ++x) {
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for (int x = 0; x < 16; ++x) {
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uint8_t b = m_cpu->memory.load8(m_cpu, (y + m_top) * 16 + x, nullptr);
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uint8_t b = m_cpu->memory.load8(m_cpu, (y + m_top) * 16 + x, nullptr);
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QChar c(b);
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painter.drawStaticText(QPointF(cellSize.width() * (x + 0.5) - m_letterWidth + m_margins.left(), yp), m_staticNumbers[b]);
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if (!c.isPrint() || c.unicode() >= 0x80) {
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painter.drawStaticText(QPointF(viewport()->size().width() - (16 - x) * m_margins.right() / 17.0 - m_letterWidth * 0.5, yp), b < 0x80 ? m_staticAscii[b] : m_staticAscii[0]);
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c = 0xFFFD;
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}
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data = QString("%0").arg(b, 2, 16, c0).toUpper();
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painter.drawText(QRectF(QPointF(cellSize.width() * x + m_margins.left(), yp), cellSize), Qt::AlignHCenter, data);
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painter.drawText(QRectF(QPointF(viewport()->size().width() - (16 - x) * m_margins.right() / 16.f, yp), letterSize), Qt::AlignHCenter, c);
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}
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}
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}
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}
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painter.drawLine(m_margins.left() - 2, 0, m_margins.left() - 2, viewport()->size().height());
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painter.drawLine(m_margins.left() - 2, 0, m_margins.left() - 2, viewport()->size().height());
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@ -9,6 +9,8 @@
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#include <QAbstractScrollArea>
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#include <QAbstractScrollArea>
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#include <QFont>
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#include <QFont>
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#include <QSize>
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#include <QSize>
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#include <QStaticText>
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#include <QVector>
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struct ARMCore;
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struct ARMCore;
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@ -38,6 +40,8 @@ private:
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int m_letterWidth;
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int m_letterWidth;
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int m_top;
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int m_top;
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QMargins m_margins;
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QMargins m_margins;
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QVector<QStaticText> m_staticNumbers;
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QVector<QStaticText> m_staticAscii;
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};
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};
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}
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}
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