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50
51 #include "qcontext2dcanvas.h"
52
53 #include "context2d.h"
54 #include "environment.h"
55 #include "domimage.h"
56
57 #include <QPainter>
58 #include <QPaintEvent>
59
60 //! [3]
QContext2DCanvas(Context2D * context,Environment * env,QWidget * parent)61 QContext2DCanvas::QContext2DCanvas(Context2D *context, Environment *env, QWidget *parent)
62 : QWidget(parent), m_context(context), m_env(env)
63 {
64 QObject::connect(context, SIGNAL(changed(QImage)), this, SLOT(contentsChanged(QImage)));
65 setMouseTracking(true);
66 }
67 //! [3]
68
~QContext2DCanvas()69 QContext2DCanvas::~QContext2DCanvas()
70 {
71 }
72
context() const73 Context2D *QContext2DCanvas::context() const
74 {
75 return m_context;
76 }
77
78 //! [0]
getContext(const QString & str)79 QScriptValue QContext2DCanvas::getContext(const QString &str)
80 {
81 if (str != "2d")
82 return QScriptValue();
83 return m_env->toWrapper(m_context);
84 }
85 //! [0]
86
87 //! [1]
contentsChanged(const QImage & image)88 void QContext2DCanvas::contentsChanged(const QImage &image)
89 {
90 m_image = image;
91 update();
92 }
93
paintEvent(QPaintEvent * e)94 void QContext2DCanvas::paintEvent(QPaintEvent *e)
95 {
96 QPainter p(this);
97 p.setClipRect(e->rect());
98 p.drawImage(0, 0, m_image);
99 }
100 //! [1]
101
102 //! [2]
mouseMoveEvent(QMouseEvent * e)103 void QContext2DCanvas::mouseMoveEvent(QMouseEvent *e)
104 {
105 m_env->handleEvent(this, e);
106 }
107
mousePressEvent(QMouseEvent * e)108 void QContext2DCanvas::mousePressEvent(QMouseEvent *e)
109 {
110 m_env->handleEvent(this, e);
111 }
112
mouseReleaseEvent(QMouseEvent * e)113 void QContext2DCanvas::mouseReleaseEvent(QMouseEvent *e)
114 {
115 m_env->handleEvent(this, e);
116 }
117
keyPressEvent(QKeyEvent * e)118 void QContext2DCanvas::keyPressEvent(QKeyEvent *e)
119 {
120 m_env->handleEvent(this, e);
121 }
122
keyReleaseEvent(QKeyEvent * e)123 void QContext2DCanvas::keyReleaseEvent(QKeyEvent *e)
124 {
125 m_env->handleEvent(this, e);
126 }
127 //! [2]
128
resizeEvent(QResizeEvent * e)129 void QContext2DCanvas::resizeEvent(QResizeEvent *e)
130 {
131 m_context->setSize(e->size().width(), e->size().height());
132 }
133
resize(int width,int height)134 void QContext2DCanvas::resize(int width, int height)
135 {
136 QWidget::resize(width, height);
137 }
138
reset()139 void QContext2DCanvas::reset()
140 {
141 m_context->reset();
142 }
143
addEventListener(const QString & type,const QScriptValue & listener,bool useCapture)144 void QContext2DCanvas::addEventListener(const QString &type, const QScriptValue &listener,
145 bool useCapture)
146 {
147 Q_UNUSED(useCapture);
148 if (listener.isFunction()) {
149 QScriptValue self = m_env->toWrapper(this);
150 self.setProperty("on" + type, listener);
151 }
152 }
153