void DlgSettingsDigitizeCurve::createControls (QGridLayout *layout,
int &row)
{
LOG4CPP_INFO_S ((*mainCat)) << "DlgSettingsDigitizeCurve::createControls";
m_boxCursor = new QGroupBox ("Cursor");
layout->addWidget (m_boxCursor, row++, 1, 1, 2);
// Layout inside cursor group box
QGridLayout *layoutCursor = new QGridLayout;
m_boxCursor->setLayout (layoutCursor);
int rowCursor = 0;
QLabel *labelCursorType = new QLabel("Type:");
layoutCursor->addWidget (labelCursorType, rowCursor, 0);
m_btnStandard = new QRadioButton ("Standard cross");
m_btnStandard->setWhatsThis (tr ("Selects the standard cross cursor"));
layoutCursor->addWidget (m_btnStandard, rowCursor++, 1);
connect (m_btnStandard, SIGNAL (toggled (bool)), this, SLOT (slotCursorStandard(bool)));
m_btnCustom = new QRadioButton ("Custom cross");
m_btnCustom->setWhatsThis (tr ("Selects a custom cursor based on the settings selected below"));
layoutCursor->addWidget (m_btnCustom, rowCursor++, 1);
connect (m_btnCustom, SIGNAL (toggled (bool)), this, SLOT (slotCursorCustom(bool)));
QLabel *labelSize = new QLabel("Size (pixels):");
layoutCursor->addWidget (labelSize, rowCursor, 0);
m_cmbSize = new QComboBox;
m_cmbSize->addItem (QString::number (CursorSizeToPixels (CURSOR_SIZE_16)), QVariant (CURSOR_SIZE_16));
m_cmbSize->addItem (QString::number (CursorSizeToPixels (CURSOR_SIZE_32)), QVariant (CURSOR_SIZE_32));
m_cmbSize->addItem (QString::number (CursorSizeToPixels (CURSOR_SIZE_48)), QVariant (CURSOR_SIZE_48));
m_cmbSize->addItem (QString::number (CursorSizeToPixels (CURSOR_SIZE_64)), QVariant (CURSOR_SIZE_64));
ENGAUGE_ASSERT (m_cmbSize->count() == NUM_CURSOR_SIZES);
m_cmbSize->setWhatsThis (tr ("Horizontal and vertical size of the cursor in pixels"));
layoutCursor->addWidget (m_cmbSize, rowCursor++, 1);
connect (m_cmbSize, SIGNAL (currentIndexChanged (const QString &)), this, SLOT (slotCursorSize (const QString &)));
QLabel *labelInnerRadius = new QLabel("Inner radius (pixels):");
layoutCursor->addWidget (labelInnerRadius, rowCursor, 0);
m_spinInnerRadius = new QSpinBox;
m_spinInnerRadius->setRange (INNER_RADIUS_MIN, INNER_RADIUS_MAX);
m_spinInnerRadius->setWhatsThis (tr ("Radius of circle at the center of the cursor that will remain empty"));
layoutCursor->addWidget (m_spinInnerRadius, rowCursor++, 1);
connect (m_spinInnerRadius, SIGNAL (valueChanged(const QString &)), this, SLOT (slotCursorInnerRadius (const QString &)));
QLabel *labelLineWidth = new QLabel("Line width (pixels):");
layoutCursor->addWidget (labelLineWidth, rowCursor, 0);
m_spinLineWidth = new QSpinBox;
m_spinLineWidth->setRange (LINE_WIDTH_MIN, LINE_WIDTH_MAX);
m_spinLineWidth->setWhatsThis (tr ("Width of each arm of the cross of the cursor"));
layoutCursor->addWidget (m_spinLineWidth, rowCursor++, 1);
connect (m_spinLineWidth, SIGNAL (valueChanged(const QString &)), this, SLOT (slotCursorLineWidth (const QString &)));
}
QCursor CursorFactory::generate (const DocumentModelDigitizeCurve &modelDigitizeCurve) const
{
// To prevent hideous drawing errors when the line is thicker, we
// leave a padding region around the outside equal in size to the line width
int innerRadius = modelDigitizeCurve.cursorInnerRadius();
int size = CursorSizeToPixels (modelDigitizeCurve.cursorSize());
int halfSize = size / 2;
int lineWidth = modelDigitizeCurve.cursorLineWidth();
int halfLineWidth = lineWidth / 2;
if (modelDigitizeCurve.cursorStandardCross()) {
// Standard cursor
return QCursor (Qt::CrossCursor);
} else {
// Custom cursor
const int BACKGROUND_COLOR = Qt::white, FOREGROUND_COLOR = Qt::black;
// Cursor is created with pic image (which has nontrivial pen) masked by picMask image
// (which has single color pen)
QPixmap picMask (size,
size);
QPainter picMaskPaint (&picMask);
picMask.fill (QColor (BACKGROUND_COLOR));
QPen pen (QBrush (FOREGROUND_COLOR),
modelDigitizeCurve.cursorLineWidth());
picMaskPaint.setPen (pen);
picMaskPaint.drawLine (QPointF (halfSize,
halfSize - innerRadius - halfLineWidth),
QPointF (halfSize,
lineWidth)); // Up
picMaskPaint.drawLine (QPointF (halfSize - innerRadius - halfLineWidth,
halfSize),
QPointF (lineWidth,
halfSize)); // Left
picMaskPaint.drawLine (QPointF (halfSize,
halfSize + innerRadius + halfLineWidth),
QPointF (halfSize,
size - 1 - lineWidth)); // Down
picMaskPaint.drawLine (QPointF (halfSize + innerRadius + halfLineWidth,
halfSize),
QPointF (size - 1 - lineWidth,
halfSize)); // Right
QPixmap pic (size,
size);
pic.fill (QColor (FOREGROUND_COLOR));
return QCursor (pic.createMaskFromColor(QColor (BACKGROUND_COLOR)),
picMask.createMaskFromColor(QColor (BACKGROUND_COLOR)));
}
}
void DlgSettingsDigitizeCurve::updateControls()
{
// Cursor has to fit into current extent
bool isGoodState = 2 * (m_modelDigitizeCurveAfter->cursorInnerRadius() + LINE_LENGTH_MIN) <=
CursorSizeToPixels (m_modelDigitizeCurveAfter->cursorSize());
enableOk (isGoodState);
m_spinInnerRadius->setEnabled (m_btnCustom->isChecked());
m_cmbSize->setEnabled (m_btnCustom->isChecked());
m_spinLineWidth->setEnabled (m_btnCustom->isChecked());
}
