event.cpp

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        if (now > (sm_lastUpdate + sm_updateInterval))
        {
            sm_lastUpdate = now;
        }
    }
#endif
}

/*
 * Idle events
 */

wxIdleMode wxIdleEvent::sm_idleMode = wxIDLE_PROCESS_ALL;

// Can we send an idle event?
bool wxIdleEvent::CanSend(wxWindow* win)
{
    // Don't update if we've switched global updating off
    // and this window doesn't support updates.
    if (win &&
       (GetMode() == wxIDLE_PROCESS_SPECIFIED &&
       ((win->GetExtraStyle() & wxWS_EX_PROCESS_IDLE) == 0)))
        return false;

    return true;
}

/*
 * Scroll events
 */

wxScrollEvent::wxScrollEvent(wxEventType commandType,
                             int id,
                             int pos,
                             int orient)
    : wxCommandEvent(commandType, id)
{
    m_extraLong = orient;
    m_commandInt = pos;
}

/*
 * ScrollWin events
 */

wxScrollWinEvent::wxScrollWinEvent(wxEventType commandType,
                                   int pos,
                                   int orient)
{
    m_eventType = commandType;
    m_extraLong = orient;
    m_commandInt = pos;
}

/*
 * Mouse events
 *
 */

wxMouseEvent::wxMouseEvent(wxEventType commandType)
{
    m_eventType = commandType;
    m_metaDown = false;
    m_altDown = false;
    m_controlDown = false;
    m_shiftDown = false;
    m_leftDown = false;
    m_rightDown = false;
    m_middleDown = false;
    m_x = 0;
    m_y = 0;
    m_wheelRotation = 0;
    m_wheelDelta = 0;
    m_linesPerAction = 0;
}

void wxMouseEvent::Assign(const wxMouseEvent& event)
{
    m_eventType = event.m_eventType;

    m_x = event.m_x;
    m_y = event.m_y;

    m_leftDown = event.m_leftDown;
    m_middleDown = event.m_middleDown;
    m_rightDown = event.m_rightDown;

    m_controlDown = event.m_controlDown;
    m_shiftDown = event.m_shiftDown;
    m_altDown = event.m_altDown;
    m_metaDown = event.m_metaDown;

    m_wheelRotation = event.m_wheelRotation;
    m_wheelDelta = event.m_wheelDelta;
    m_linesPerAction = event.m_linesPerAction;
}

// return true if was a button dclick event
bool wxMouseEvent::ButtonDClick(int but) const
{
    switch (but)
    {
        default:
            wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDClick"));
            // fall through

        case wxMOUSE_BTN_ANY:
            return (LeftDClick() || MiddleDClick() || RightDClick());

        case wxMOUSE_BTN_LEFT:
            return LeftDClick();

        case wxMOUSE_BTN_MIDDLE:
            return MiddleDClick();

        case wxMOUSE_BTN_RIGHT:
            return RightDClick();
    }
}

// return true if was a button down event
bool wxMouseEvent::ButtonDown(int but) const
{
    switch (but)
    {
        default:
            wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDown"));
            // fall through

        case wxMOUSE_BTN_ANY:
            return (LeftDown() || MiddleDown() || RightDown());

        case wxMOUSE_BTN_LEFT:
            return LeftDown();

        case wxMOUSE_BTN_MIDDLE:
            return MiddleDown();

        case wxMOUSE_BTN_RIGHT:
            return RightDown();
    }
}

// return true if was a button up event
bool wxMouseEvent::ButtonUp(int but) const
{
    switch (but)
    {
        default:
            wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonUp"));
            // fall through

        case wxMOUSE_BTN_ANY:
            return (LeftUp() || MiddleUp() || RightUp());

        case wxMOUSE_BTN_LEFT:
            return LeftUp();

        case wxMOUSE_BTN_MIDDLE:
            return MiddleUp();

        case wxMOUSE_BTN_RIGHT:
            return RightUp();
    }
}

// return true if the given button is currently changing state
bool wxMouseEvent::Button(int but) const
{
    switch (but)
    {
        default:
            wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::Button"));
            // fall through

        case wxMOUSE_BTN_ANY:
            return ButtonUp(wxMOUSE_BTN_ANY) ||
                    ButtonDown(wxMOUSE_BTN_ANY) ||
                        ButtonDClick(wxMOUSE_BTN_ANY);

        case wxMOUSE_BTN_LEFT:
            return LeftDown() || LeftUp() || LeftDClick();

        case wxMOUSE_BTN_MIDDLE:
            return MiddleDown() || MiddleUp() || MiddleDClick();

        case wxMOUSE_BTN_RIGHT:
            return RightDown() || RightUp() || RightDClick();
    }
}

bool wxMouseEvent::ButtonIsDown(int but) const
{
    switch (but)
    {
        default:
            wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonIsDown"));
            // fall through

        case wxMOUSE_BTN_ANY:
            return LeftIsDown() || MiddleIsDown() || RightIsDown();

        case wxMOUSE_BTN_LEFT:
            return LeftIsDown();

        case wxMOUSE_BTN_MIDDLE:
            return MiddleIsDown();

        case wxMOUSE_BTN_RIGHT:
            return RightIsDown();
    }
}

int wxMouseEvent::GetButton() const
{
    for ( int i = 1; i <= 3; i++ )
    {
        if ( Button(i) )
        {
            return i;
        }
    }

    return wxMOUSE_BTN_NONE;
}

// Find the logical position of the event given the DC
wxPoint wxMouseEvent::GetLogicalPosition(const wxDC& dc) const
{
    wxPoint pt(dc.DeviceToLogicalX(m_x), dc.DeviceToLogicalY(m_y));
    return pt;
}


/*
 * Keyboard event
 *
 */

wxKeyEvent::wxKeyEvent(wxEventType type)
{
    m_eventType = type;
    m_shiftDown = false;
    m_controlDown = false;
    m_metaDown = false;
    m_altDown = false;
    m_keyCode = 0;
    m_scanCode = 0;
#if wxUSE_UNICODE
    m_uniChar = 0;
#endif
}

wxKeyEvent::wxKeyEvent(const wxKeyEvent& evt)
    : wxEvent(evt)
{
    m_x = evt.m_x;
    m_y = evt.m_y;

    m_keyCode = evt.m_keyCode;

    m_controlDown = evt.m_controlDown;
    m_shiftDown = evt.m_shiftDown;
    m_altDown = evt.m_altDown;
    m_metaDown = evt.m_metaDown;
    m_scanCode = evt.m_scanCode;
    m_rawCode = evt.m_rawCode;
    m_rawFlags = evt.m_rawFlags;

#if wxUSE_UNICODE
    m_uniChar = evt.m_uniChar;
#endif
}

long wxKeyEvent::KeyCode() const
{
    return m_keyCode;
}

wxWindowCreateEvent::wxWindowCreateEvent(wxWindow *win)
{
    SetEventType(wxEVT_CREATE);
    SetEventObject(win);
}

wxWindowDestroyEvent::wxWindowDestroyEvent(wxWindow *win)
{
    SetEventType(wxEVT_DESTROY);
    SetEventObject(win);
}

wxChildFocusEvent::wxChildFocusEvent(wxWindow *win)
                 : wxCommandEvent(wxEVT_CHILD_FOCUS)
{
    SetEventObject(win);
}

#endif // wxUSE_GUI


#if wxUSE_BASE

// ----------------------------------------------------------------------------
// wxEventHashTable
// ----------------------------------------------------------------------------

static const int EVENT_TYPE_TABLE_INIT_SIZE = 31; // Not too big not too small...

wxEventHashTable* wxEventHashTable::sm_first = NULL;

wxEventHashTable::wxEventHashTable(const wxEventTable &table)
                : m_table(table),
                  m_rebuildHash(true)
{
    AllocEventTypeTable(EVENT_TYPE_TABLE_INIT_SIZE);

    m_next = sm_first;
    if (m_next)
        m_next->m_previous = this;
    sm_first = this;
}

wxEventHashTable::~wxEventHashTable()
{
    if (m_next)
        m_next->m_previous = m_previous;
    if (m_previous)
        m_previous->m_next = m_next;
    if (sm_first == this)
        sm_first = m_next;

    Clear();
}

void wxEventHashTable::Clear()
{
    size_t i;
    for(i = 0; i < m_size; i++)
    {
        EventTypeTablePointer  eTTnode = m_eventTypeTable[i];
        if (eTTnode)
        {
            delete eTTnode;
        }
    }

    // Necessary in order to not invoke the
    // overloaded delete operator when statics are cleaned up
    if (m_eventTypeTable)
        delete[] m_eventTypeTable;

    m_eventTypeTable = NULL;
    m_size = 0;
}

// Clear all tables
void wxEventHashTable::ClearAll()
{
    wxEventHashTable* table = sm_first;
    while (table)
    {
        table->Clear();
        table = table->m_next;
    }
}

bool wxEventHashTable::HandleEvent(wxEvent &event, wxEvtHandler *self)
{
    if (m_rebuildHash)
    {
        InitHashTable();
        m_rebuildHash = false;
    }

    if (!m_eventTypeTable)
        return false;

    // Find all entries for the given event type.
    wxEventType eventType = event.GetEventType();
    const EventTypeTablePointer eTTnode = m_eventTypeTable[eventType % m_size];
    if (eTTnode && eTTnode->eventType == eventType)
    {
        // Now start the search for an event handler
        // that can handle an event with the given ID.
        const wxEventTableEntryPointerArray&
            eventEntryTable = eTTnode->eventEntryTable;

        const size_t count = eventEntryTable.GetCount();
        for (size_t n = 0; n < count; n++)
        {
            if ( wxEvtHandler::
                    ProcessEventIfMatches(*eventEntryTable[n], self, event) )
            {
                return true;
            }
        }
    }

    return false;
}

void wxEventHashTable::InitHashTable()
{
    // Loop over the event tables and all its base tables.
    const wxEventTable *table = &m_table;
    while (table)
    {
        // Retrieve all valid event handler entries
        const wxEventTableEntry *entry = table->entries;
        while (entry->m_fn != 0)
        {
            // Add the event entry in the Hash.
            AddEntry(*entry);

            entry++;
        }

        table = table->baseTable;
    }

    // Lets free some memory.
    size_t i;
    for(i = 0; i < m_size; i++)
    {
        EventTypeTablePointer  eTTnode = m_eventTypeTable[i];
        if (eTTnode)
        {
            eTTnode->eventEntryTable.Shrink();
        }
    }
}

void wxEventHashTable::AddEntry(const wxEventTableEntry &entry)
{
    // This might happen 'accidentally' as the app is exiting
    if (!m_eventTypeTable)
        return;

    EventTypeTablePointer *peTTnode = &m_eventTypeTable[entry.m_eventType % m_size];
    EventTypeTablePointer  eTTnode = *peTTnode;

    if (eTTnode)
    {
        if (eTTnode->eventType != entry.m_eventType)
        {
            // Resize the table!
            GrowEventTypeTable();
            // Try again to add it.
            AddEntry(entry);
            return;
        }
    }
    else
    {
        eTTnode = new EventTypeTable;
        eTTnode->eventType = entry.m_eventType;
        *peTTnode = eTTnode;
    }

    // Fill all hash entries between entry.m_id and entry.m_lastId...
    eTTnode->eventEntryTable.Add(&entry);
}

void wxEventHashTable::AllocEventTypeTable(size_t size)
{
    m_eventTypeTable = new EventTypeTablePointer[size];
    memset((void *)m_eventTypeTable, 0, sizeof(EventTypeTablePointer)*size);
    m_size = size;
}

void wxEventHashTable::GrowEventTypeTable()
{
    size_t oldSize = m_size;
    EventTypeTablePointer *oldEventTypeTable = m_eventTypeTable;

    // TODO: Search the most optimal grow sequence
    AllocEventTypeTable(/* GetNextPrime(oldSize) */oldSize*2+1);

    for ( size_t i = 0; i < oldSize; /* */ )
    {
        EventTypeTablePointer  eTToldNode = oldEventTypeTable[i];
        if (eTToldNode)
        {
            EventTypeTablePointer *peTTnode = &m_eventTypeTable[eTToldNode->eventType % m_size];