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50
51#include "renderarea.h"
52#include "window.h"
53
54#include <QtWidgets>
55
56//! [0]
57const int IdRole = Qt::UserRole;
58//! [0]
59
60//! [1]
61Window::Window()
62{
63 renderArea = new RenderArea;
64
65 shapeComboBox = new QComboBox;
66 shapeComboBox->addItem(atext: tr(s: "Polygon"), auserData: RenderArea::Polygon);
67 shapeComboBox->addItem(atext: tr(s: "Rectangle"), auserData: RenderArea::Rect);
68 shapeComboBox->addItem(atext: tr(s: "Rounded Rectangle"), auserData: RenderArea::RoundedRect);
69 shapeComboBox->addItem(atext: tr(s: "Ellipse"), auserData: RenderArea::Ellipse);
70 shapeComboBox->addItem(atext: tr(s: "Pie"), auserData: RenderArea::Pie);
71 shapeComboBox->addItem(atext: tr(s: "Chord"), auserData: RenderArea::Chord);
72 shapeComboBox->addItem(atext: tr(s: "Path"), auserData: RenderArea::Path);
73 shapeComboBox->addItem(atext: tr(s: "Line"), auserData: RenderArea::Line);
74 shapeComboBox->addItem(atext: tr(s: "Polyline"), auserData: RenderArea::Polyline);
75 shapeComboBox->addItem(atext: tr(s: "Arc"), auserData: RenderArea::Arc);
76 shapeComboBox->addItem(atext: tr(s: "Points"), auserData: RenderArea::Points);
77 shapeComboBox->addItem(atext: tr(s: "Text"), auserData: RenderArea::Text);
78 shapeComboBox->addItem(atext: tr(s: "Pixmap"), auserData: RenderArea::Pixmap);
79
80 shapeLabel = new QLabel(tr(s: "&Shape:"));
81 shapeLabel->setBuddy(shapeComboBox);
82//! [1]
83
84//! [2]
85 penWidthSpinBox = new QSpinBox;
86 penWidthSpinBox->setRange(min: 0, max: 20);
87 penWidthSpinBox->setSpecialValueText(tr(s: "0 (cosmetic pen)"));
88
89 penWidthLabel = new QLabel(tr(s: "Pen &Width:"));
90 penWidthLabel->setBuddy(penWidthSpinBox);
91//! [2]
92
93//! [3]
94 penStyleComboBox = new QComboBox;
95 penStyleComboBox->addItem(atext: tr(s: "Solid"), auserData: static_cast<int>(Qt::SolidLine));
96 penStyleComboBox->addItem(atext: tr(s: "Dash"), auserData: static_cast<int>(Qt::DashLine));
97 penStyleComboBox->addItem(atext: tr(s: "Dot"), auserData: static_cast<int>(Qt::DotLine));
98 penStyleComboBox->addItem(atext: tr(s: "Dash Dot"), auserData: static_cast<int>(Qt::DashDotLine));
99 penStyleComboBox->addItem(atext: tr(s: "Dash Dot Dot"), auserData: static_cast<int>(Qt::DashDotDotLine));
100 penStyleComboBox->addItem(atext: tr(s: "None"), auserData: static_cast<int>(Qt::NoPen));
101
102 penStyleLabel = new QLabel(tr(s: "&Pen Style:"));
103 penStyleLabel->setBuddy(penStyleComboBox);
104
105 penCapComboBox = new QComboBox;
106 penCapComboBox->addItem(atext: tr(s: "Flat"), auserData: Qt::FlatCap);
107 penCapComboBox->addItem(atext: tr(s: "Square"), auserData: Qt::SquareCap);
108 penCapComboBox->addItem(atext: tr(s: "Round"), auserData: Qt::RoundCap);
109
110 penCapLabel = new QLabel(tr(s: "Pen &Cap:"));
111 penCapLabel->setBuddy(penCapComboBox);
112
113 penJoinComboBox = new QComboBox;
114 penJoinComboBox->addItem(atext: tr(s: "Miter"), auserData: Qt::MiterJoin);
115 penJoinComboBox->addItem(atext: tr(s: "Bevel"), auserData: Qt::BevelJoin);
116 penJoinComboBox->addItem(atext: tr(s: "Round"), auserData: Qt::RoundJoin);
117
118 penJoinLabel = new QLabel(tr(s: "Pen &Join:"));
119 penJoinLabel->setBuddy(penJoinComboBox);
120//! [3]
121
122//! [4]
123 brushStyleComboBox = new QComboBox;
124 brushStyleComboBox->addItem(atext: tr(s: "Linear Gradient"),
125 auserData: static_cast<int>(Qt::LinearGradientPattern));
126 brushStyleComboBox->addItem(atext: tr(s: "Radial Gradient"),
127 auserData: static_cast<int>(Qt::RadialGradientPattern));
128 brushStyleComboBox->addItem(atext: tr(s: "Conical Gradient"),
129 auserData: static_cast<int>(Qt::ConicalGradientPattern));
130 brushStyleComboBox->addItem(atext: tr(s: "Texture"), auserData: static_cast<int>(Qt::TexturePattern));
131 brushStyleComboBox->addItem(atext: tr(s: "Solid"), auserData: static_cast<int>(Qt::SolidPattern));
132 brushStyleComboBox->addItem(atext: tr(s: "Horizontal"), auserData: static_cast<int>(Qt::HorPattern));
133 brushStyleComboBox->addItem(atext: tr(s: "Vertical"), auserData: static_cast<int>(Qt::VerPattern));
134 brushStyleComboBox->addItem(atext: tr(s: "Cross"), auserData: static_cast<int>(Qt::CrossPattern));
135 brushStyleComboBox->addItem(atext: tr(s: "Backward Diagonal"), auserData: static_cast<int>(Qt::BDiagPattern));
136 brushStyleComboBox->addItem(atext: tr(s: "Forward Diagonal"), auserData: static_cast<int>(Qt::FDiagPattern));
137 brushStyleComboBox->addItem(atext: tr(s: "Diagonal Cross"), auserData: static_cast<int>(Qt::DiagCrossPattern));
138 brushStyleComboBox->addItem(atext: tr(s: "Dense 1"), auserData: static_cast<int>(Qt::Dense1Pattern));
139 brushStyleComboBox->addItem(atext: tr(s: "Dense 2"), auserData: static_cast<int>(Qt::Dense2Pattern));
140 brushStyleComboBox->addItem(atext: tr(s: "Dense 3"), auserData: static_cast<int>(Qt::Dense3Pattern));
141 brushStyleComboBox->addItem(atext: tr(s: "Dense 4"), auserData: static_cast<int>(Qt::Dense4Pattern));
142 brushStyleComboBox->addItem(atext: tr(s: "Dense 5"), auserData: static_cast<int>(Qt::Dense5Pattern));
143 brushStyleComboBox->addItem(atext: tr(s: "Dense 6"), auserData: static_cast<int>(Qt::Dense6Pattern));
144 brushStyleComboBox->addItem(atext: tr(s: "Dense 7"), auserData: static_cast<int>(Qt::Dense7Pattern));
145 brushStyleComboBox->addItem(atext: tr(s: "None"), auserData: static_cast<int>(Qt::NoBrush));
146
147 brushStyleLabel = new QLabel(tr(s: "&Brush:"));
148 brushStyleLabel->setBuddy(brushStyleComboBox);
149//! [4]
150
151//! [5]
152 otherOptionsLabel = new QLabel(tr(s: "Options:"));
153//! [5] //! [6]
154 antialiasingCheckBox = new QCheckBox(tr(s: "&Antialiasing"));
155//! [6] //! [7]
156 transformationsCheckBox = new QCheckBox(tr(s: "&Transformations"));
157//! [7]
158
159//! [8]
160 connect(sender: shapeComboBox, signal: QOverload<int>::of(ptr: &QComboBox::activated),
161 receiver: this, slot: &Window::shapeChanged);
162 connect(sender: penWidthSpinBox, signal: QOverload<int>::of(ptr: &QSpinBox::valueChanged),
163 receiver: this, slot: &Window::penChanged);
164 connect(sender: penStyleComboBox, signal: QOverload<int>::of(ptr: &QComboBox::activated),
165 receiver: this, slot: &Window::penChanged);
166 connect(sender: penCapComboBox, signal: QOverload<int>::of(ptr: &QComboBox::activated),
167 receiver: this, slot: &Window::penChanged);
168 connect(sender: penJoinComboBox, signal: QOverload<int>::of(ptr: &QComboBox::activated),
169 receiver: this, slot: &Window::penChanged);
170 connect(sender: brushStyleComboBox, signal: QOverload<int>::of(ptr: &QComboBox::activated),
171 receiver: this, slot: &Window::brushChanged);
172 connect(sender: antialiasingCheckBox, signal: &QAbstractButton::toggled,
173 receiver: renderArea, slot: &RenderArea::setAntialiased);
174 connect(sender: transformationsCheckBox, signal: &QAbstractButton::toggled,
175 receiver: renderArea, slot: &RenderArea::setTransformed);
176//! [8]
177
178//! [9]
179 QGridLayout *mainLayout = new QGridLayout;
180//! [9] //! [10]
181 mainLayout->setColumnStretch(column: 0, stretch: 1);
182 mainLayout->setColumnStretch(column: 3, stretch: 1);
183 mainLayout->addWidget(renderArea, row: 0, column: 0, rowSpan: 1, columnSpan: 4);
184 mainLayout->addWidget(shapeLabel, row: 2, column: 0, Qt::AlignRight);
185 mainLayout->addWidget(shapeComboBox, row: 2, column: 1);
186 mainLayout->addWidget(penWidthLabel, row: 3, column: 0, Qt::AlignRight);
187 mainLayout->addWidget(penWidthSpinBox, row: 3, column: 1);
188 mainLayout->addWidget(penStyleLabel, row: 4, column: 0, Qt::AlignRight);
189 mainLayout->addWidget(penStyleComboBox, row: 4, column: 1);
190 mainLayout->addWidget(penCapLabel, row: 3, column: 2, Qt::AlignRight);
191 mainLayout->addWidget(penCapComboBox, row: 3, column: 3);
192 mainLayout->addWidget(penJoinLabel, row: 2, column: 2, Qt::AlignRight);
193 mainLayout->addWidget(penJoinComboBox, row: 2, column: 3);
194 mainLayout->addWidget(brushStyleLabel, row: 4, column: 2, Qt::AlignRight);
195 mainLayout->addWidget(brushStyleComboBox, row: 4, column: 3);
196 mainLayout->addWidget(otherOptionsLabel, row: 5, column: 0, Qt::AlignRight);
197 mainLayout->addWidget(antialiasingCheckBox, row: 5, column: 1, rowSpan: 1, columnSpan: 1, Qt::AlignRight);
198 mainLayout->addWidget(transformationsCheckBox, row: 5, column: 2, rowSpan: 1, columnSpan: 2, Qt::AlignRight);
199 setLayout(mainLayout);
200
201 shapeChanged();
202 penChanged();
203 brushChanged();
204 antialiasingCheckBox->setChecked(true);
205
206 setWindowTitle(tr(s: "Basic Drawing"));
207}
208//! [10]
209
210//! [11]
211void Window::shapeChanged()
212{
213 RenderArea::Shape shape = RenderArea::Shape(shapeComboBox->itemData(
214 index: shapeComboBox->currentIndex(), role: IdRole).toInt());
215 renderArea->setShape(shape);
216}
217//! [11]
218
219//! [12]
220void Window::penChanged()
221{
222 int width = penWidthSpinBox->value();
223 Qt::PenStyle style = Qt::PenStyle(penStyleComboBox->itemData(
224 index: penStyleComboBox->currentIndex(), role: IdRole).toInt());
225 Qt::PenCapStyle cap = Qt::PenCapStyle(penCapComboBox->itemData(
226 index: penCapComboBox->currentIndex(), role: IdRole).toInt());
227 Qt::PenJoinStyle join = Qt::PenJoinStyle(penJoinComboBox->itemData(
228 index: penJoinComboBox->currentIndex(), role: IdRole).toInt());
229
230 renderArea->setPen(QPen(Qt::blue, width, style, cap, join));
231}
232//! [12]
233
234//! [13]
235void Window::brushChanged()
236{
237 Qt::BrushStyle style = Qt::BrushStyle(brushStyleComboBox->itemData(
238//! [13]
239 index: brushStyleComboBox->currentIndex(), role: IdRole).toInt());
240
241//! [14]
242 if (style == Qt::LinearGradientPattern) {
243 QLinearGradient linearGradient(0, 0, 100, 100);
244 linearGradient.setColorAt(pos: 0.0, color: Qt::white);
245 linearGradient.setColorAt(pos: 0.2, color: Qt::green);
246 linearGradient.setColorAt(pos: 1.0, color: Qt::black);
247 renderArea->setBrush(linearGradient);
248//! [14] //! [15]
249 } else if (style == Qt::RadialGradientPattern) {
250 QRadialGradient radialGradient(50, 50, 50, 70, 70);
251 radialGradient.setColorAt(pos: 0.0, color: Qt::white);
252 radialGradient.setColorAt(pos: 0.2, color: Qt::green);
253 radialGradient.setColorAt(pos: 1.0, color: Qt::black);
254 renderArea->setBrush(radialGradient);
255 } else if (style == Qt::ConicalGradientPattern) {
256 QConicalGradient conicalGradient(50, 50, 150);
257 conicalGradient.setColorAt(pos: 0.0, color: Qt::white);
258 conicalGradient.setColorAt(pos: 0.2, color: Qt::green);
259 conicalGradient.setColorAt(pos: 1.0, color: Qt::black);
260 renderArea->setBrush(conicalGradient);
261//! [15] //! [16]
262 } else if (style == Qt::TexturePattern) {
263 renderArea->setBrush(QBrush(QPixmap(":/images/brick.png")));
264//! [16] //! [17]
265 } else {
266 renderArea->setBrush(QBrush(Qt::green, style));
267 }
268}
269//! [17]
270

source code of qtbase/examples/widgets/painting/basicdrawing/window.cpp