Developer Documentation

functionDisplay.cc
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40 \*===========================================================================*/
41
42
43
44 //== INCLUDES =================================================================
45 #include <QWidget>
46 #include <QPainter>
47 #include <QGraphicsLinearLayout>
48 #include <QGraphicsProxyWidget>
49 #include <QGraphicsGridLayout>
50
51 #include "baseWidget.hh"
52
53 #include "functionDisplay.hh"
54 #include "elementFunction.hh"
55 #include "text.hh"
56 #include "button.hh"
57
58 #include "../parser/function.hh"
59 #include "../parser/element.hh"
60
61 #define BACKGROUND_RED 0x0
62 #define BACKGROUND_GREEN 0x0
63 #define BACKGROUND_BLUE 0x0
64 #define BACKGROUND_ALPHA 0xff
65
66
67 //== NAMESPACES ===============================================================
68 namespace VSI {
69
70 //=============================================================================
71 //
72 // CLASS VSI::FunctionDisplay - IMPLEMENTATION
73 //
74 //=============================================================================
75
77 FunctionDisplay::FunctionDisplay (GraphicsScene *_scene) :
78 scene_ (_scene)
79 {
80 QGraphicsGridLayout *tL = new QGraphicsGridLayout;
81
82 // If the scene belongs to a function, then display its name and add the "Go back" button
83 if (scene_->function ())
84 {
85
86 Text *f = new Text (scene_->function ()->function ()->element ()->shortDescription (), this);
87 Text *fn = new Text (scene_->function ()->function ()->shortDescription (), this);
88 Button *goBack = new Button (tr("Go back"), this);
89
90 f->setBackground (true, false);
91 f->setBrush (Qt::black);
92 f->setBackgroundBrush (Qt::gray);
93 fn->setBackground (true, false);
94 fn->setBrush (Qt::black);
95 fn->setBackgroundBrush (Qt::white);
96 goBack->setBrush (Qt::black);
97 goBack->setBackgroundBrush (Qt::lightGray);
98 goBack->setBackground (true, true);
99
100 connect (goBack, SIGNAL (pressed ()), BaseWidget::getBaseWidget(), SLOT (popScene ()));
101
102 QFont font = f->font ();
103 fn->setFont (font);
104 font.setBold (true);
105 f->setFont (font);
106
107
108 tL->addItem (f, 0, 0, Qt::AlignVCenter | Qt::AlignLeft);
109 tL->addItem (fn, 0, 1, Qt::AlignVCenter | Qt::AlignLeft);
110 tL->addItem (goBack, 0, 2, Qt::AlignVCenter | Qt::AlignLeft);
111 }
112 // Scene is the main scene
113 else
114 {
115 Text *f = new Text (tr("Main"), this);
116 f->setBackground (true, true);
117 f->setBrush (Qt::black);
118 f->setBackgroundBrush (Qt::white);
119
120 tL->addItem (f, 0, 0);
121
122 QFont font = f->font ();
123 font.setBold (true);
124 f->setFont (font);
125 }
126
127 tL->setHorizontalSpacing (1);
128 tL->setContentsMargins (3, 3, 3, 3);
129 setLayout (tL);
130
131 setMinimumWidth (tL->preferredWidth());
132 }
133
134 //------------------------------------------------------------------------------
135
137 FunctionDisplay::~FunctionDisplay ()
138 {
139 }
140
141 //------------------------------------------------------------------------------
142
144 void FunctionDisplay::paint (QPainter *_painter, const QStyleOptionGraphicsItem *_option, QWidget *_widget)
145 {
146 int w = geometry().width();
147 int h = geometry().height();
148
149 _painter->setRenderHint(QPainter::Antialiasing, true);
150
151 _painter->setBrush(QBrush(QColor(BACKGROUND_RED,
152 BACKGROUND_GREEN,
153 BACKGROUND_BLUE,
154 BACKGROUND_ALPHA)));
155
156 _painter->setPen(QColor(BACKGROUND_RED,
157 BACKGROUND_GREEN,
158 BACKGROUND_BLUE,
159 BACKGROUND_ALPHA));
160
161 QPainterPath path;
162 path.moveTo (0, 0);
163 path.lineTo (0, h);
164 path.lineTo (w - 10, h);
165 path.arcTo (w - 20, h - 20, 20, 20, -90, 90);
166 path.lineTo (w, 0);
167 path.lineTo (0, 0);
168 _painter->drawPath (path);
169
170
171 QLinearGradient lG;
172 QRadialGradient rG;
173
174 _painter->setPen (Qt::NoPen);
175
176 lG.setStart (w - 5, 0);
177 lG.setFinalStop(w, 0);
178 lG.setColorAt(0, Qt::transparent);
179 lG.setColorAt(1, QColor (255, 255, 255, 128));
180 _painter->setBrush (lG);
181 _painter->drawRect (w - 5, 0, 5, h - 10);
182
183 lG.setStart (0, h - 5);
184 lG.setFinalStop (0, h);
185 _painter->setBrush (lG);
186 _painter->drawRect (0, h - 5, w - 10, 5);
187
188 path = QPainterPath ();
189 path.moveTo (w - 10, h);
190 path.arcTo (w - 20, h - 20, 20, 20, -90, 90);
191 path.lineTo (w - 10, h - 10);
192 path.lineTo (w - 10, h);
193 rG.setCenter (w - 10, h - 10);
194 rG.setFocalPoint(w -10, h - 10);
195 rG.setRadius (10);
196 rG.setColorAt (0, Qt::transparent);
197 rG.setColorAt (0.5, Qt::transparent);
198 rG.setColorAt (1, QColor (255, 255, 255, 128));
199 _painter->setBrush (rG);
200 _painter->drawPath(path);
201
202 QGraphicsWidget::paint (_painter, _option, _widget);
203 }
204
205 //------------------------------------------------------------------------------
206 }
207
VSI::Button
Definition: button.hh:67
VSI::FunctionDisplay::paint
void paint(QPainter *_painter, const QStyleOptionGraphicsItem *_option, QWidget *_widget=0)
Paints the background.
Definition: functionDisplay.cc:144
VSI::GraphicsScene
Definition: graphicsScene.hh:80
VSI::GraphicsScene::function
ElementFunction * function()
Associated function.
Definition: graphicsScene.hh:141
VSI::BaseWidget::getBaseWidget
static BaseWidget * getBaseWidget()
Returns singleton.
Definition: baseWidget.cc:465
VSI::Element::shortDescription
const QString & shortDescription() const
Short description.
Definition: element.hh:88
VSI::Text::setBackgroundBrush
virtual void setBackgroundBrush(QBrush _brush)
Sets the background brush.
Definition: text.cc:379
VSI::FunctionDisplay::FunctionDisplay
FunctionDisplay(GraphicsScene *_scene)
Constructor.
Definition: functionDisplay.cc:77
VSI::Function::shortDescription
const QString & shortDescription() const
Short description.
Definition: function.hh:84
VSI::Function::element
Element * element() const
Element that this function belongs to.
Definition: function.hh:78
VSI
Definition: baseWidget.cc:72
VSI::ElementFunction::function
Function * function()
Function class.
Definition: elementFunction.hh:82
VSI::Text
Definition: text.hh:67
VSI::Text::setBackground
void setBackground(bool _leftOut, bool _rightOut)
Enables background painting.
Definition: text.cc:300
VSI::FunctionDisplay::~FunctionDisplay
~FunctionDisplay()
Destructor.
Definition: functionDisplay.cc:137