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Qt: Optimize drawing in MemoryModel

This commit is contained in:
Jeffrey Pfau 2015-04-29 00:48:47 -07:00
parent e3cc98e034
commit 10d5588d4c
2 changed files with 22 additions and 7 deletions
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25
src/platform/qt/MemoryModel.cpp
View File

@ -30,6 +30,22 @@ MemoryModel::MemoryModel(QWidget* parent)
m_cellHeight = metrics.height();
m_letterWidth = metrics.averageCharWidth();
for (int i = 0; i < 256; ++i) {
QStaticText str(QString("%0").arg(i, 2, 16, QChar('0')).toUpper());
str.prepare(QTransform(), m_font);
m_staticNumbers.append(str);
}
for (int i = 0; i < 128; ++i) {
QChar c(0xFFFD);
if (c.isPrint()) {
c = i;
}
QStaticText str = QStaticText(QString(c));
str.prepare(QTransform(), m_font);
m_staticAscii.append(str);
}
setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
m_margins = QMargins(metrics.width("FFFFFF ") + 3, m_cellHeight + 1, metrics.width(" AAAAAAAAAAAAAAAA") + 3, 0);
@ -69,13 +85,8 @@ void MemoryModel::paintEvent(QPaintEvent* event) {
painter.drawText(QRectF(QPointF(0, yp), QSizeF(m_margins.left(), m_cellHeight)), Qt::AlignHCenter, data);
for (int x = 0; x < 16; ++x) {
uint8_t b = m_cpu->memory.load8(m_cpu, (y + m_top) * 16 + x, nullptr);
QChar c(b);
if (!c.isPrint() || c.unicode() >= 0x80) {
c = 0xFFFD;
}
data = QString("%0").arg(b, 2, 16, c0).toUpper();
painter.drawText(QRectF(QPointF(cellSize.width() * x + m_margins.left(), yp), cellSize), Qt::AlignHCenter, data);
painter.drawText(QRectF(QPointF(viewport()->size().width() - (16 - x) * m_margins.right() / 16.f, yp), letterSize), Qt::AlignHCenter, c);
painter.drawStaticText(QPointF(cellSize.width() * (x + 0.5) - m_letterWidth + m_margins.left(), yp), m_staticNumbers[b]);
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]);
}
}
painter.drawLine(m_margins.left() - 2, 0, m_margins.left() - 2, viewport()->size().height());

4
src/platform/qt/MemoryModel.h
View File

@ -9,6 +9,8 @@
#include <QAbstractScrollArea>
#include <QFont>
#include <QSize>
#include <QStaticText>
#include <QVector>
struct ARMCore;
@ -38,6 +40,8 @@ private:
int m_letterWidth;
int m_top;
QMargins m_margins;
QVector<QStaticText> m_staticNumbers;
QVector<QStaticText> m_staticAscii;
};
}