scintillawx.cpp

wxGTK 是 wxWidgets 的 linux GTK+ (>2.2.3)版本。wxWidgets 是一个跨平台的 GUI 框架

        xPos -= pageWidth;
    else if (type == wxEVT_SCROLLWIN_PAGEDOWN || type == wxEVT_SCROLL_PAGEDOWN) {
        xPos += pageWidth;
        if (xPos > scrollWidth - rcText.Width()) {
            xPos = scrollWidth - rcText.Width();
        }
    }
    else if (type == wxEVT_SCROLLWIN_TOP || type == wxEVT_SCROLL_TOP)
        xPos = 0;
    else if (type == wxEVT_SCROLLWIN_BOTTOM || type == wxEVT_SCROLL_BOTTOM)
        xPos = scrollWidth;
    else if (type == wxEVT_SCROLLWIN_THUMBTRACK || type == wxEVT_SCROLL_THUMBTRACK)
        xPos = pos;

    HorizontalScrollTo(xPos);
}

void ScintillaWX::DoVScroll(int type, int pos) {
    int topLineNew = topLine;
    if (type == wxEVT_SCROLLWIN_LINEUP || type == wxEVT_SCROLL_LINEUP)
        topLineNew -= 1;
    else if (type == wxEVT_SCROLLWIN_LINEDOWN || type == wxEVT_SCROLL_LINEDOWN)
        topLineNew += 1;
    else if (type ==  wxEVT_SCROLLWIN_PAGEUP || type == wxEVT_SCROLL_PAGEUP)
        topLineNew -= LinesToScroll();
    else if (type ==  wxEVT_SCROLLWIN_PAGEDOWN || type == wxEVT_SCROLL_PAGEDOWN)
        topLineNew += LinesToScroll();
    else if (type ==  wxEVT_SCROLLWIN_TOP || type == wxEVT_SCROLL_TOP)
        topLineNew = 0;
    else if (type ==  wxEVT_SCROLLWIN_BOTTOM || type == wxEVT_SCROLL_BOTTOM)
        topLineNew = MaxScrollPos();
    else if (type ==   wxEVT_SCROLLWIN_THUMBTRACK || type == wxEVT_SCROLL_THUMBTRACK)
        topLineNew = pos;

    ScrollTo(topLineNew);
}

void ScintillaWX::DoMouseWheel(int rotation, int delta,
                               int linesPerAction, int ctrlDown,
                               bool isPageScroll ) {
    int topLineNew = topLine;
    int lines;

    if (ctrlDown) {  // Zoom the fonts if Ctrl key down
        if (rotation < 0) {
            KeyCommand(SCI_ZOOMIN);
        }
        else {
            KeyCommand(SCI_ZOOMOUT);
        }
    }
    else { // otherwise just scroll the window
        if ( !delta )
            delta = 120;
        wheelRotation += rotation;
        lines = wheelRotation / delta;
        wheelRotation -= lines * delta;
        if (lines != 0) {
            if (isPageScroll)
                lines = lines * LinesOnScreen();  // lines is either +1 or -1
            else
                lines *= linesPerAction;
            topLineNew -= lines;
            ScrollTo(topLineNew);
        }
    }
}


void ScintillaWX::DoSize(int WXUNUSED(width), int WXUNUSED(height)) {
    ChangeSize();
}

void ScintillaWX::DoLoseFocus(){
    focusEvent = true;
    SetFocusState(false);
    focusEvent = false;
    DestroySystemCaret();
}

void ScintillaWX::DoGainFocus(){
    focusEvent = true;
    SetFocusState(true);
    focusEvent = false;
    DestroySystemCaret();
    CreateSystemCaret();
}

void ScintillaWX::DoSysColourChange() {
    InvalidateStyleData();
}

void ScintillaWX::DoLeftButtonDown(Point pt, unsigned int curTime, bool shift, bool ctrl, bool alt) {
    ButtonDown(pt, curTime, shift, ctrl, alt);
}

void ScintillaWX::DoLeftButtonUp(Point pt, unsigned int curTime, bool ctrl) {
    ButtonUp(pt, curTime, ctrl);
#if wxUSE_DRAG_AND_DROP
    if (startDragTimer->IsRunning()) {
        startDragTimer->Stop();
        SetDragPosition(invalidPosition);
        SetEmptySelection(PositionFromLocation(pt));
        ShowCaretAtCurrentPosition();
    }
#endif // wxUSE_DRAG_AND_DROP
}

void ScintillaWX::DoLeftButtonMove(Point pt) {
    ButtonMove(pt);
}

#ifdef __WXGTK__
void ScintillaWX::DoMiddleButtonUp(Point pt) {
    // Set the current position to the mouse click point and
    // then paste in the PRIMARY selection, if any.  wxGTK only.
    int newPos = PositionFromLocation(pt);
    MovePositionTo(newPos, noSel, true);

    pdoc->BeginUndoAction();
    wxTextDataObject data;
    bool gotData = false;
    if (wxTheClipboard->Open()) {
        wxTheClipboard->UsePrimarySelection(true);
        gotData = wxTheClipboard->GetData(data);
        wxTheClipboard->UsePrimarySelection(false);
        wxTheClipboard->Close();
    }
    if (gotData) {
        wxString   text = wxTextBuffer::Translate(data.GetText(),
                                                  wxConvertEOLMode(pdoc->eolMode));
        wxWX2MBbuf buf = (wxWX2MBbuf)wx2stc(text);
        int        len = strlen(buf);
        pdoc->InsertString(currentPos, buf, len);
        SetEmptySelection(currentPos + len);
    }
    pdoc->EndUndoAction();
    NotifyChange();
    Redraw();

    ShowCaretAtCurrentPosition();
    EnsureCaretVisible();
}
#else
void ScintillaWX::DoMiddleButtonUp(Point WXUNUSED(pt)) {
}
#endif


void ScintillaWX::DoAddChar(int key) {
#if wxUSE_UNICODE
    wxChar wszChars[2];
    wszChars[0] = (wxChar)key;
    wszChars[1] = 0;
    wxWX2MBbuf buf = (wxWX2MBbuf)wx2stc(wszChars);
    AddCharUTF((char*)buf.data(), strlen(buf));
#else
    AddChar((char)key);
#endif
}


int  ScintillaWX::DoKeyDown(const wxKeyEvent& evt, bool* consumed)
{
    int key = evt.GetKeyCode();
    bool shift = evt.ShiftDown(),
         ctrl  = evt.ControlDown(),
         alt   = evt.AltDown();

    if (ctrl && key >= 1 && key <= 26 && key != WXK_BACK)
        key += 'A' - 1;

    switch (key) {
    case WXK_DOWN:              key = SCK_DOWN;     break;
    case WXK_UP:                key = SCK_UP;       break;
    case WXK_LEFT:              key = SCK_LEFT;     break;
    case WXK_RIGHT:             key = SCK_RIGHT;    break;
    case WXK_HOME:              key = SCK_HOME;     break;
    case WXK_END:               key = SCK_END;      break;
    case WXK_PAGEUP:            key = SCK_PRIOR;    break;
    case WXK_PAGEDOWN:          key = SCK_NEXT;     break;
    case WXK_NUMPAD_DOWN:       key = SCK_DOWN;     break;
    case WXK_NUMPAD_UP:         key = SCK_UP;       break;
    case WXK_NUMPAD_LEFT:       key = SCK_LEFT;     break;
    case WXK_NUMPAD_RIGHT:      key = SCK_RIGHT;    break;
    case WXK_NUMPAD_HOME:       key = SCK_HOME;     break;
    case WXK_NUMPAD_END:        key = SCK_END;      break;
    case WXK_NUMPAD_PAGEUP:     key = SCK_PRIOR;    break;
    case WXK_NUMPAD_PAGEDOWN:   key = SCK_NEXT;     break;
    case WXK_NUMPAD_DELETE:     key = SCK_DELETE;   break;
    case WXK_NUMPAD_INSERT:     key = SCK_INSERT;   break;
    case WXK_DELETE:            key = SCK_DELETE;   break;
    case WXK_INSERT:            key = SCK_INSERT;   break;
    case WXK_ESCAPE:            key = SCK_ESCAPE;   break;
    case WXK_BACK:              key = SCK_BACK;     break;
    case WXK_TAB:               key = SCK_TAB;      break;
    case WXK_NUMPAD_ENTER:      // fall through
    case WXK_RETURN:            key = SCK_RETURN;   break;
    case WXK_ADD:               // fall through
    case WXK_NUMPAD_ADD:        key = SCK_ADD;      break;
    case WXK_SUBTRACT:          // fall through
    case WXK_NUMPAD_SUBTRACT:   key = SCK_SUBTRACT; break;
    case WXK_DIVIDE:            // fall through
    case WXK_NUMPAD_DIVIDE:     key = SCK_DIVIDE;   break;
    case WXK_CONTROL:           key = 0; break;
    case WXK_ALT:               key = 0; break;
    case WXK_SHIFT:             key = 0; break;
    case WXK_MENU:              key = 0; break;
    }

#ifdef __WXMAC__
    if ( evt.MetaDown() ) {
        // check for a few common Mac Meta-key combos and remap them to Ctrl
        // for Scintilla
        switch ( key ) {
        case 'Z':       // Undo
        case 'X':       // Cut
        case 'C':       // Copy
        case 'V':       // Paste
        case 'A':       // Select All
            ctrl = true;
            break;
        }
    }
#endif

    int rv = KeyDown(key, shift, ctrl, alt, consumed);

    if (key)
        return rv;
    else
        return 1;
}


void ScintillaWX::DoCommand(int ID) {
    Command(ID);
}


void ScintillaWX::DoContextMenu(Point pt) {
    if (displayPopupMenu)
        ContextMenu(pt);
}

void ScintillaWX::DoOnListBox() {
    AutoCompleteCompleted();
}


void ScintillaWX::DoOnIdle(wxIdleEvent& evt) {

    if ( Idle() )
        evt.RequestMore();
    else
        SetIdle(false);
}

//----------------------------------------------------------------------

#if wxUSE_DRAG_AND_DROP
bool ScintillaWX::DoDropText(long x, long y, const wxString& data) {
    SetDragPosition(invalidPosition);

    wxString text = wxTextBuffer::Translate(data,
                                            wxConvertEOLMode(pdoc->eolMode));

    // Send an event to allow the drag details to be changed
    wxStyledTextEvent evt(wxEVT_STC_DO_DROP, stc->GetId());
    evt.SetEventObject(stc);
    evt.SetDragResult(dragResult);
    evt.SetX(x);
    evt.SetY(y);
    evt.SetPosition(PositionFromLocation(Point(x,y)));
    evt.SetDragText(text);
    stc->GetEventHandler()->ProcessEvent(evt);

    dragResult = evt.GetDragResult();
    if (dragResult == wxDragMove || dragResult == wxDragCopy) {
        DropAt(evt.GetPosition(),
               wx2stc(evt.GetDragText()),
               dragResult == wxDragMove,
               false); // TODO: rectangular?
        return true;
    }
    return false;
}


wxDragResult ScintillaWX::DoDragEnter(wxCoord WXUNUSED(x), wxCoord WXUNUSED(y), wxDragResult def) {
    dragResult = def;
    return dragResult;
}


wxDragResult ScintillaWX::DoDragOver(wxCoord x, wxCoord y, wxDragResult def) {
    SetDragPosition(PositionFromLocation(Point(x, y)));

    // Send an event to allow the drag result to be changed
    wxStyledTextEvent evt(wxEVT_STC_DRAG_OVER, stc->GetId());
    evt.SetEventObject(stc);
    evt.SetDragResult(def);
    evt.SetX(x);
    evt.SetY(y);
    evt.SetPosition(PositionFromLocation(Point(x,y)));
    stc->GetEventHandler()->ProcessEvent(evt);

    dragResult = evt.GetDragResult();
    return dragResult;
}


void ScintillaWX::DoDragLeave() {
    SetDragPosition(invalidPosition);
}
#endif // wxUSE_DRAG_AND_DROP
//----------------------------------------------------------------------

// Force the whole window to be repainted
void ScintillaWX::FullPaint() {
#ifndef __WXMAC__
    stc->Refresh(false);
#endif
    stc->Update();
}


void ScintillaWX::DoScrollToLine(int line) {
    ScrollTo(line);
}


void ScintillaWX::DoScrollToColumn(int column) {
    HorizontalScrollTo(column * vs.spaceWidth);
}

// wxGTK doesn't appear to need this explicit clipping code any longer, but I
// will leave it here commented out for a while just in case...
void ScintillaWX::ClipChildren(wxDC& WXUNUSED(dc), PRectangle WXUNUSED(rect))
{
//     wxRegion rgn(wxRectFromPRectangle(rect));
//     if (ac.Active()) {
//         wxRect childRect = ((wxWindow*)ac.lb->GetID())->GetRect();
//         rgn.Subtract(childRect);
//     }
//     if (ct.inCallTipMode) {
//         wxSTCCallTip* tip = (wxSTCCallTip*)ct.wCallTip.GetID();
//         wxRect childRect = tip->GetRect();
// #if wxUSE_POPUPWIN && wxSTC_USE_POPUP
//         childRect.SetPosition(tip->GetMyPosition());
// #endif
//         rgn.Subtract(childRect);
//     }
//     dc.SetClippingRegion(rgn);
}


void ScintillaWX::SetUseAntiAliasing(bool useAA) {
    vs.extraFontFlag = useAA;
    InvalidateStyleRedraw();
}

bool ScintillaWX::GetUseAntiAliasing() {
    return vs.extraFontFlag;
}

//----------------------------------------------------------------------
//----------------------------------------------------------------------