#include <QtGui>#include <QtDebug>#include "palette.h"#include "penstyledelegate.h"Palette::Palette(QWidget *parent)	: QWidget(parent){	penColorComboBox = new QComboBox;	createColorComboBox(penColorComboBox);	penColorLabel = new QLabel(tr("Pen Color:"));	penColorLabel->setBuddy(penColorComboBox);    penWidthSpinBox = new QSpinBox;    penWidthSpinBox->setRange(0, 20);    penWidthSpinBox->setSpecialValueText(tr("0 (cosmetic pen)"));    penWidthLabel = new QLabel(tr("Pen &Width:"));    penWidthLabel->setBuddy(penWidthSpinBox);	createStyleComboBox();    penStyleLabel = new QLabel(tr("&Pen Style:"));    penStyleLabel->setBuddy(penStyleComboBox);	brushColorComboBox = new QComboBox();	createColorComboBox(brushColorComboBox);	brushColorLabel = new QLabel(tr("Brush Color:"));	brushColorLabel->setBuddy(brushColorComboBox);    brushStyleComboBox = new QComboBox;    brushStyleComboBox->addItem(tr("None"), Qt::NoBrush);    brushStyleComboBox->addItem(tr("Solid"), Qt::SolidPattern);    brushStyleComboBox->addItem(tr("Horizontal"), Qt::HorPattern);    brushStyleComboBox->addItem(tr("Vertical"), Qt::VerPattern);    brushStyleComboBox->addItem(tr("Cross"), Qt::CrossPattern);    brushStyleComboBox->addItem(tr("Backward Diagonal"), Qt::BDiagPattern);    brushStyleComboBox->addItem(tr("Forward Diagonal"), Qt::FDiagPattern);    brushStyleComboBox->addItem(tr("Diagonal Cross"), Qt::DiagCrossPattern);    brushStyleComboBox->addItem(tr("Dense 1"), Qt::Dense1Pattern);    brushStyleComboBox->addItem(tr("Dense 2"), Qt::Dense2Pattern);    brushStyleComboBox->addItem(tr("Dense 3"), Qt::Dense3Pattern);    brushStyleComboBox->addItem(tr("Dense 4"), Qt::Dense4Pattern);    brushStyleComboBox->addItem(tr("Dense 5"), Qt::Dense5Pattern);    brushStyleComboBox->addItem(tr("Dense 6"), Qt::Dense6Pattern);    brushStyleComboBox->addItem(tr("Dense 7"), Qt::Dense7Pattern);    brushStyleComboBox->addItem(tr("Linear Gradient"),            Qt::LinearGradientPattern);    brushStyleComboBox->addItem(tr("Radial Gradient"),            Qt::RadialGradientPattern);    brushStyleComboBox->addItem(tr("Conical Gradient"),            Qt::ConicalGradientPattern);    brushStyleComboBox->addItem(tr("Texture"), Qt::TexturePattern);    brushStyleLabel = new QLabel(tr("&Brush Style:"));    brushStyleLabel->setBuddy(brushStyleComboBox);	preLabel = new PreviewLabel(this);    connect(penColorComboBox, SIGNAL(currentIndexChanged(int)),            this, SLOT(penChanged()));    connect(penWidthSpinBox, SIGNAL(valueChanged(int)),            this, SLOT(penChanged()));    connect(penStyleComboBox, SIGNAL(currentIndexChanged(int)),            this, SLOT(penChanged()));    connect(brushColorComboBox, SIGNAL(currentIndexChanged(int)),            this, SLOT(brushChanged()));    connect(brushStyleComboBox, SIGNAL(currentIndexChanged(int)),            this, SLOT(brushChanged()));	connect(this, SIGNAL(penChanged(QPen&)), preLabel, SLOT(penChanged(QPen&)));	connect(this, SIGNAL(brushChanged(QBrush&)), preLabel, SLOT(brushChanged(QBrush&)));    QGridLayout *mainLayout = new QGridLayout;    mainLayout->addWidget(penColorLabel, 0, 0, Qt::AlignRight);    mainLayout->addWidget(penColorComboBox, 0, 1);    mainLayout->addWidget(penWidthLabel, 1, 0, Qt::AlignRight);    mainLayout->addWidget(penWidthSpinBox, 1, 1);    mainLayout->addWidget(penStyleLabel, 2, 0, Qt::AlignRight);    mainLayout->addWidget(penStyleComboBox, 2, 1);    mainLayout->addWidget(brushColorLabel, 3, 0, Qt::AlignRight);    mainLayout->addWidget(brushColorComboBox, 3, 1);    mainLayout->addWidget(brushStyleLabel, 4, 0, Qt::AlignRight);    mainLayout->addWidget(brushStyleComboBox, 4, 1);    mainLayout->addWidget(preLabel, 5, 0, 6, 2);    setLayout(mainLayout);    penChanged();    brushChanged();    setWindowTitle(tr("Basic Drawing"));}void Palette::penChanged(){	QPen pen;    int width = penWidthSpinBox->value();	pen.setWidth(width);    QColor color = penColorComboBox->itemData(		penColorComboBox->currentIndex(), Qt::UserRole).value<QColor>();	pen.setColor(color);    Qt::PenStyle penStyle = (Qt::PenStyle)penStyleComboBox->itemData(		penStyleComboBox->currentIndex(), Qt::UserRole).toInt();	pen.setStyle(penStyle);	emit penChanged(pen);}void Palette::brushChanged(){	QBrush brush;    QColor color = brushColorComboBox->itemData(		brushColorComboBox->currentIndex(), Qt::UserRole).value<QColor>();    Qt::BrushStyle style = Qt::BrushStyle(brushStyleComboBox->itemData(            brushStyleComboBox->currentIndex(), Qt::UserRole).toInt());    if (style == Qt::LinearGradientPattern) {        QLinearGradient linearGradient(0, 0, 100, 100);        linearGradient.setColorAt(0.0, Qt::white);        linearGradient.setColorAt(0.2, Qt::green);        linearGradient.setColorAt(1.0, Qt::black);        brush = linearGradient;    } else if (style == Qt::RadialGradientPattern) {        QRadialGradient radialGradient(50, 50, 50, 70, 70);        radialGradient.setColorAt(0.0, Qt::white);        radialGradient.setColorAt(0.2, Qt::green);        radialGradient.setColorAt(1.0, Qt::black);        brush = radialGradient;    } else if (style == Qt::ConicalGradientPattern) {        QConicalGradient conicalGradient(50, 50, 150);        conicalGradient.setColorAt(0.0, Qt::white);        conicalGradient.setColorAt(0.2, Qt::green);        conicalGradient.setColorAt(1.0, Qt::black);        brush = conicalGradient;    } else if (style == Qt::TexturePattern) {        brush = QBrush(QPixmap(":/images/ellipse.png"));    } else {		brush.setColor(color);		brush.setStyle(style);    }	emit brushChanged(brush);}void Palette::createColorComboBox(QComboBox *comboBox){    QPixmap pix(16, 16);    QPainter pt(&pix);    pt.fillRect(0, 0, 16, 16, Qt::black);	comboBox->addItem(QIcon(pix), tr("black"), Qt::black);    pt.fillRect(0, 0, 16, 16, Qt::red);	comboBox->addItem(QIcon(pix), tr("red"), Qt::red);    pt.fillRect(0, 0, 16, 16, Qt::green);	comboBox->addItem(QIcon(pix), tr("green"), Qt::green);    pt.fillRect(0, 0, 16, 16, Qt::blue);	comboBox->addItem(QIcon(pix), tr("blue"), Qt::blue);    pt.fillRect(0, 0, 16, 16, Qt::yellow);	comboBox->addItem(QIcon(pix), tr("yellow"), Qt::yellow);    pt.fillRect(0, 0, 16, 16, Qt::cyan);	comboBox->addItem(QIcon(pix), tr("cyan"), Qt::cyan);    pt.fillRect(0, 0, 16, 16, Qt::magenta);	comboBox->addItem(QIcon(pix), tr("magenta"), Qt::magenta);}void Palette::createStyleComboBox(){    penStyleComboBox = new QComboBox;	penStyleComboBox->setItemDelegate(new QPenStyleDelegate((QObject *)penStyleComboBox));    penStyleComboBox->addItem(tr("Solid"), Qt::SolidLine);    penStyleComboBox->addItem(tr("Dash"), Qt::DashLine);    penStyleComboBox->addItem(tr("Dot"), Qt::DotLine);    penStyleComboBox->addItem(tr("Dash Dot"), Qt::DashDotLine);    penStyleComboBox->addItem(tr("Dash Dot Dot"), Qt::DashDotDotLine);    penStyleComboBox->addItem(tr("None"), Qt::NoPen);}