qcontext2dcanvas.cpp

奇趣公司比较新的qt/emd版本

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#include "qcontext2dcanvas.h"

#include "context2d.h"
#include "domimage.h"

#include <QApplication>
#include <QPainter>
#include <QPaintEvent>
#include <QMouseEvent>
#include <QDateTime>

struct FakeDomEvent
{
    enum KeyCodes  {
        DOM_VK_UNDEFINED            = 0x0,
        DOM_VK_RIGHT_ALT            = 0x12,
        DOM_VK_LEFT_ALT             = 0x12,
        DOM_VK_LEFT_CONTROL         = 0x11,
        DOM_VK_RIGHT_CONTROL        = 0x11,
        DOM_VK_LEFT_SHIFT           = 0x10,
        DOM_VK_RIGHT_SHIFT          = 0x10,
        DOM_VK_META                 = 0x9D,
        DOM_VK_BACK_SPACE           = 0x08,
        DOM_VK_CAPS_LOCK            = 0x14,
        DOM_VK_DELETE               = 0x7F,
        DOM_VK_END                  = 0x23,
        DOM_VK_ENTER                = 0x0D,
        DOM_VK_ESCAPE               = 0x1B,
        DOM_VK_HOME                 = 0x24,
        DOM_VK_NUM_LOCK             = 0x90,
        DOM_VK_PAUSE                = 0x13,
        DOM_VK_PRINTSCREEN          = 0x9A,
        DOM_VK_SCROLL_LOCK          = 0x91,
        DOM_VK_SPACE                = 0x20,
        DOM_VK_TAB                  = 0x09,
        DOM_VK_LEFT                 = 0x25,
        DOM_VK_RIGHT                = 0x27,
        DOM_VK_UP                   = 0x26,
        DOM_VK_DOWN                 = 0x28,
        DOM_VK_PAGE_DOWN            = 0x22,
        DOM_VK_PAGE_UP              = 0x21,
        DOM_VK_F1                   = 0x70,
        DOM_VK_F2                   = 0x71,
        DOM_VK_F3                   = 0x72,
        DOM_VK_F4                   = 0x73,
        DOM_VK_F5                   = 0x74,
        DOM_VK_F6                   = 0x75,
        DOM_VK_F7                   = 0x76,
        DOM_VK_F8                   = 0x77,
        DOM_VK_F9                   = 0x78,
        DOM_VK_F10                  = 0x79,
        DOM_VK_F11                  = 0x7A,
        DOM_VK_F12                  = 0x7B,
        DOM_VK_F13                  = 0xF000,
        DOM_VK_F14                  = 0xF001,
        DOM_VK_F15                  = 0xF002,
        DOM_VK_F16                  = 0xF003,
        DOM_VK_F17                  = 0xF004,
        DOM_VK_F18                  = 0xF005,
        DOM_VK_F19                  = 0xF006,
        DOM_VK_F20                  = 0xF007,
        DOM_VK_F21                  = 0xF008,
        DOM_VK_F22                  = 0xF009,
        DOM_VK_F23                  = 0xF00A,
        DOM_VK_F24                  = 0xF00B
    };

    FakeDomEvent();
    FakeDomEvent(QMouseEvent *e, QScriptEngine *eng);
    FakeDomEvent(QKeyEvent *e, QScriptEngine *eng);

    void setupModifiers(QInputEvent *e, QScriptEngine *eng);

    static int qtToDomKey(int keyCode);
    static void setupDefaults(QScriptEngine *e);
    static void setup(QScriptEngine *e);

    static QScriptValue m_proto;
};

Q_DECLARE_METATYPE(FakeDomEvent)

FakeDomEvent::FakeDomEvent()
{
}

FakeDomEvent::FakeDomEvent(QMouseEvent *e, QScriptEngine *eng)
{
    setupDefaults(eng);
    setupModifiers(e, eng);
    m_proto.setProperty("type",
                        QScriptValue(eng, QLatin1String("mouseevent")));
    int button = 0;
    if (e->button() == Qt::RightButton)
        button = 2;
    else if (e->button() == Qt::MidButton)
        button = 1;
    m_proto.setProperty("button", QScriptValue(eng, button));

    m_proto.setProperty("clientX", QScriptValue(eng, e->x()));
    m_proto.setProperty("clientY", QScriptValue(eng, e->y()));
    m_proto.setProperty("layerX", QScriptValue(eng, e->x()));
    m_proto.setProperty("layerY", QScriptValue(eng, e->y()));
    m_proto.setProperty("pageX", QScriptValue(eng, e->x()));
    m_proto.setProperty("pageY", QScriptValue(eng, e->y()));
    m_proto.setProperty("screenX", QScriptValue(eng, e->globalX()));
    m_proto.setProperty("screenY", QScriptValue(eng, e->globalY()));

    eng->setDefaultPrototype(qMetaTypeId<FakeDomEvent>(), m_proto);
}

FakeDomEvent::FakeDomEvent(QKeyEvent *e, QScriptEngine *eng)
{
    setupDefaults(eng);
    setupModifiers(e, eng);
    m_proto.setProperty("type", QScriptValue(eng, QLatin1String("keyevent")));

    m_proto.setProperty("isChar", QScriptValue(eng, !e->text().isEmpty()));
    m_proto.setProperty("charCode", QScriptValue(eng, e->text()));
    m_proto.setProperty("keyCode", QScriptValue(eng, qtToDomKey(e->key())));
    m_proto.setProperty("which", QScriptValue(eng, e->key()));

    eng->setDefaultPrototype(qMetaTypeId<FakeDomEvent>(), m_proto);
}

void FakeDomEvent::setupModifiers(QInputEvent *e, QScriptEngine *eng)
{
    if (e->modifiers() & Qt::AltModifier)
        m_proto.setProperty("altKey", QScriptValue(eng, true));
    else
        m_proto.setProperty("altKey", QScriptValue(eng, false));

    if (e->modifiers() & Qt::ControlModifier)
        m_proto.setProperty("ctrlKey", QScriptValue(eng, true));
    else
        m_proto.setProperty("ctrlKey", QScriptValue(eng, false));

    if (e->modifiers() & Qt::MetaModifier)
        m_proto.setProperty("metaKey", QScriptValue(eng, true));
    else
        m_proto.setProperty("metaKey", QScriptValue(eng, false));

    if (e->modifiers() & Qt::ShiftModifier)
        m_proto.setProperty("shiftKey", QScriptValue(eng, true));
    else
        m_proto.setProperty("shiftKey", QScriptValue(eng, true));
}

int FakeDomEvent::qtToDomKey(int keyCode)
{
    switch (keyCode) {
    case Qt::Key_Backspace:
        return  DOM_VK_BACK_SPACE;
    case Qt::Key_Enter:
        return  DOM_VK_ENTER;
    case Qt::Key_Return:
        return  DOM_VK_ENTER;
    case Qt::Key_NumLock:
        return  DOM_VK_NUM_LOCK;
    case Qt::Key_Alt:
        return  DOM_VK_RIGHT_ALT;
    case Qt::Key_Control:
        return  DOM_VK_LEFT_CONTROL;
    case Qt::Key_Shift:
        return  DOM_VK_LEFT_SHIFT;
    case Qt::Key_Meta:
        return  DOM_VK_META;
    case Qt::Key_CapsLock:
        return  DOM_VK_CAPS_LOCK;
    case Qt::Key_Delete:
        return  DOM_VK_DELETE;
    case Qt::Key_End:
        return  DOM_VK_END;
    case Qt::Key_Escape:
        return  DOM_VK_ESCAPE;
    case Qt::Key_Home:
        return  DOM_VK_HOME;
    case Qt::Key_Pause:
        return  DOM_VK_PAUSE;
    case Qt::Key_Print:
        return  DOM_VK_PRINTSCREEN;
    case Qt::Key_ScrollLock:
        return  DOM_VK_SCROLL_LOCK;
    case Qt::Key_Left:
        return  DOM_VK_LEFT;
    case Qt::Key_Right:
        return  DOM_VK_RIGHT;
    case Qt::Key_Up:
        return  DOM_VK_UP;
    case Qt::Key_Down:
        return  DOM_VK_DOWN;
    case Qt::Key_PageDown:
        return  DOM_VK_PAGE_DOWN;
    case Qt::Key_PageUp:
        return  DOM_VK_PAGE_UP;
    case Qt::Key_F1:
        return  DOM_VK_F1;
    case Qt::Key_F2:
        return  DOM_VK_F2;
    case Qt::Key_F3:
        return  DOM_VK_F3;
    case Qt::Key_F4:
        return  DOM_VK_F4;
    case Qt::Key_F5:
        return  DOM_VK_F5;
    case Qt::Key_F6:
        return  DOM_VK_F6;
    case Qt::Key_F7:
        return  DOM_VK_F7;
    case Qt::Key_F8:
        return  DOM_VK_F8;
    case Qt::Key_F9:
        return  DOM_VK_F9;
    case Qt::Key_F10:
        return  DOM_VK_F10;
    case Qt::Key_F11:
        return  DOM_VK_F11;
    case Qt::Key_F12:
        return  DOM_VK_F12;
    case Qt::Key_F13:
        return  DOM_VK_F13;
    case Qt::Key_F14:
        return  DOM_VK_F14;
    case Qt::Key_F15:
        return  DOM_VK_F15;
    case Qt::Key_F16:
        return  DOM_VK_F16;
    case Qt::Key_F17:
        return  DOM_VK_F17;
    case Qt::Key_F18:
        return  DOM_VK_F18;
    case Qt::Key_F19:
        return  DOM_VK_F19;
    case Qt::Key_F20:
        return  DOM_VK_F20;
    case Qt::Key_F21:
        return  DOM_VK_F21;
    case Qt::Key_F22:
        return  DOM_VK_F22;
    case Qt::Key_F23:
        return  DOM_VK_F23;
    case Qt::Key_F24: