wxscintilla.cpp

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////////////////////////////////////////////////////////////////////////////
// Name:        wxscintilla.cpp
// Purpose:     A wxWidgets implementation of Scintilla.  This class is the
//              one meant to be used directly by wx applications.  It does not
//              derive directly from the Scintilla classes, but instead
//              delegates most things to the real Scintilla class.
//              This allows the use of Scintilla without polluting the
//              namespace with all the classes and identifiers from Scintilla.
//
// Author:      Robin Dunn
//
// Created:     13-Jan-2000
// RCS-ID:      $Id: wxscintilla.cpp,v 1.1 2008/02/24 16:18:07 rollmark Exp $
// Copyright:   (c) 2004 wxCode
// Licence:     wxWindows
/////////////////////////////////////////////////////////////////////////////

#include <ctype.h>

#include "ScintillaWX.h"
#include "wx/wxscintilla.h"

#include <wx/wx.h>
#include <wx/tokenzr.h>
#include <wx/mstream.h>
#include <wx/image.h>
#include <wx/file.h>


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

const wxChar* wxSCINameStr = _T("SCIwindow");

#ifdef MAKELONG
#undef MAKELONG
#endif

#define MAKELONG(a, b) ((a) | ((b) << 16))


static long wxColourAsLong(const wxColour& co) {
    return (((long)co.Blue()  << 16) |
            ((long)co.Green() <<  8) |
            ((long)co.Red()));
}

static wxColour wxColourFromLong(long c) {
    wxColour clr;
    clr.Set((unsigned char)(c & 0xff),
            (unsigned char)((c >> 8) & 0xff),
            (unsigned char)((c >> 16) & 0xff));
    return clr;
}


static wxColour wxColourFromSpec(const wxString& spec) {
    // spec should be a colour name or "#RRGGBB"
    if (spec.GetChar(0) == _T('#')) {

        long red, green, blue;
        red = green = blue = 0;
        spec.Mid(1,2).ToLong(&red,   16);
        spec.Mid(3,2).ToLong(&green, 16);
        spec.Mid(5,2).ToLong(&blue,  16);
        return wxColour((unsigned char)red, (unsigned char)green, (unsigned char)blue);
    }else{
        return wxColour(spec);
    }
}

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

DEFINE_EVENT_TYPE( wxEVT_SCI_CHANGE )
DEFINE_EVENT_TYPE( wxEVT_SCI_STYLENEEDED )
DEFINE_EVENT_TYPE( wxEVT_SCI_CHARADDED )
DEFINE_EVENT_TYPE( wxEVT_SCI_SAVEPOINTREACHED )
DEFINE_EVENT_TYPE( wxEVT_SCI_SAVEPOINTLEFT )
DEFINE_EVENT_TYPE( wxEVT_SCI_ROMODIFYATTEMPT )
DEFINE_EVENT_TYPE( wxEVT_SCI_KEY )
DEFINE_EVENT_TYPE( wxEVT_SCI_DOUBLECLICK )
DEFINE_EVENT_TYPE( wxEVT_SCI_UPDATEUI )
DEFINE_EVENT_TYPE( wxEVT_SCI_MODIFIED )
DEFINE_EVENT_TYPE( wxEVT_SCI_MACRORECORD )
DEFINE_EVENT_TYPE( wxEVT_SCI_MARGINCLICK )
DEFINE_EVENT_TYPE( wxEVT_SCI_NEEDSHOWN )
DEFINE_EVENT_TYPE( wxEVT_SCI_PAINTED )
DEFINE_EVENT_TYPE( wxEVT_SCI_USERLISTSELECTION )
DEFINE_EVENT_TYPE( wxEVT_SCI_URIDROPPED )
DEFINE_EVENT_TYPE( wxEVT_SCI_DWELLSTART )
DEFINE_EVENT_TYPE( wxEVT_SCI_DWELLEND )
DEFINE_EVENT_TYPE( wxEVT_SCI_START_DRAG )
DEFINE_EVENT_TYPE( wxEVT_SCI_DRAG_OVER )
DEFINE_EVENT_TYPE( wxEVT_SCI_DO_DROP )
DEFINE_EVENT_TYPE( wxEVT_SCI_ZOOM )
DEFINE_EVENT_TYPE( wxEVT_SCI_HOTSPOT_CLICK )
DEFINE_EVENT_TYPE( wxEVT_SCI_HOTSPOT_DCLICK )
DEFINE_EVENT_TYPE( wxEVT_SCI_CALLTIP_CLICK )
DEFINE_EVENT_TYPE( wxEVT_SCI_AUTOCOMP_SELECTION )



BEGIN_EVENT_TABLE(wxScintilla, wxControl)
    EVT_PAINT                   (wxScintilla::OnPaint)
    EVT_SCROLLWIN               (wxScintilla::OnScrollWin)
    EVT_SCROLL                  (wxScintilla::OnScroll)
    EVT_SIZE                    (wxScintilla::OnSize)
    EVT_LEFT_DOWN               (wxScintilla::OnMouseLeftDown)
    // Let Scintilla see the double click as a second click
    EVT_LEFT_DCLICK             (wxScintilla::OnMouseLeftDown)
    EVT_MOTION                  (wxScintilla::OnMouseMove)
    EVT_LEFT_UP                 (wxScintilla::OnMouseLeftUp)
#if defined(__WXGTK__) || defined(__WXMAC__)
    EVT_RIGHT_UP                (wxScintilla::OnMouseRightUp)
#else
    EVT_CONTEXT_MENU            (wxScintilla::OnContextMenu)
#endif
    EVT_MOUSEWHEEL              (wxScintilla::OnMouseWheel)
    EVT_MIDDLE_UP               (wxScintilla::OnMouseMiddleUp)
    EVT_CHAR                    (wxScintilla::OnChar)
    EVT_KEY_DOWN                (wxScintilla::OnKeyDown)
    EVT_KILL_FOCUS              (wxScintilla::OnLoseFocus)
    EVT_SET_FOCUS               (wxScintilla::OnGainFocus)
    EVT_SYS_COLOUR_CHANGED      (wxScintilla::OnSysColourChanged)
    EVT_ERASE_BACKGROUND        (wxScintilla::OnEraseBackground)
    EVT_MENU_RANGE              (10, 16, wxScintilla::OnMenu)
    EVT_LISTBOX_DCLICK          (wxID_ANY, wxScintilla::OnListBox)
END_EVENT_TABLE()


IMPLEMENT_CLASS(wxScintilla, wxControl)
IMPLEMENT_DYNAMIC_CLASS(wxScintillaEvent, wxCommandEvent)

#ifdef LINK_LEXERS
// forces the linking of the lexer modules
int Scintilla_LinkLexers();
#endif

//----------------------------------------------------------------------
// Constructor and Destructor

wxScintilla::wxScintilla (wxWindow *parent,
                          wxWindowID id,
                          const wxPoint& pos,
                          const wxSize& size,
                          long style,
                          const wxString& name) {
    m_swx = NULL;
    Create (parent, id, pos, size, style, name);
}


bool wxScintilla::Create (wxWindow *parent,
                          wxWindowID id,
                          const wxPoint& pos,
                          const wxSize& size,
                          long style,
                          const wxString& name) {
#ifdef __WXMAC__
    style |= wxVSCROLL | wxHSCROLL;
#endif
    if (!wxControl::Create (parent, id, pos, size,
                            style | wxWANTS_CHARS | wxCLIP_CHILDREN,
                            wxDefaultValidator, name)) {
        return false;
    }

#ifdef LINK_LEXERS
    Scintilla_LinkLexers();
#endif
    m_swx = new ScintillaWX(this);
    m_stopWatch.Start();
    m_lastKeyDownConsumed = FALSE;
    m_vScrollBar = NULL;
    m_hScrollBar = NULL;
#if wxUSE_UNICODE
    // Put Scintilla into unicode (UTF-8) mode
    SetCodePage(wxSCI_CP_UTF8);
#endif

#if wxCHECK_VERSION(2, 5, 0)
    // Reduces flicker on GTK+/X11
    SetBackgroundStyle(wxBG_STYLE_CUSTOM);
    SetInitialSize(size);
#endif
    return false;
}

wxScintilla::~wxScintilla() {
    delete m_swx;
}


//----------------------------------------------------------------------
// Send message to Scintilla
long wxScintilla::SendMsg (int msg, long wp, long lp) {
    return m_swx->WndProc (msg, wp, lp);
}

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

// Set the vertical scrollbar to use instead of the ont that's built-in.
void wxScintilla::SetVScrollBar (wxScrollBar* bar) {
    m_vScrollBar = bar;
    if (bar != NULL) {
        // ensure that the built-in scrollbar is not visible
        SetScrollbar(wxVERTICAL, 0, 0, 0);
    }
}

// Set the horizontal scrollbar to use instead of the ont that's built-in.
void wxScintilla::SetHScrollBar (wxScrollBar* bar) {
    m_hScrollBar = bar;
    if (bar != NULL) {
        // ensure that the built-in scrollbar is not visible
        SetScrollbar(wxHORIZONTAL, 0, 0, 0);
    }
}

//----------------------------------------------------------------------
// BEGIN generated section.  The following code is automatically generated
//       by gen_iface.py from the contents of Scintilla.iface.  Do not edit
//       this file.  Edit wxscintilla.cpp.in or gen_iface.py instead and regenerate.

// Add text to the document at current position.
void wxScintilla::AddText (const wxString& text) {
    wxWX2MBbuf buf = (wxWX2MBbuf)wx2sci(text);
    SendMsg (SCI_ADDTEXT, strlen(buf), (long)(const char*)buf);
}

// Add text to the document w/length parameter, this allows for binary data to be added.
void wxScintilla::AddText (const int length, const wxString& text) {
    wxWX2MBbuf buf = (wxWX2MBbuf)wx2sci(text);
    SendMsg (SCI_ADDTEXT, length, (long)(const char*)buf);
}

// Add array of cells to document.
void wxScintilla::AddStyledText (const wxMemoryBuffer& data) {
    SendMsg (SCI_ADDSTYLEDTEXT, data.GetDataLen(), (long)data.GetData());
}

// Insert string at a position.
void wxScintilla::InsertText (int pos, const wxString& text) {
    SendMsg (SCI_INSERTTEXT, pos, (long)(const char*)wx2sci(text));
}

// Delete all text in the document.
void wxScintilla::ClearAll() {
    SendMsg (SCI_CLEARALL, 0, 0);
}

// Set all style bytes to 0, remove all folding information.
void wxScintilla::ClearDocumentStyle() {
    SendMsg (SCI_CLEARDOCUMENTSTYLE, 0, 0);
}

// Returns the number of characters in the document.
int wxScintilla::GetLength() {
    return SendMsg (SCI_GETLENGTH, 0, 0);
}

// Returns the character byte at the position.
int wxScintilla::GetCharAt (int pos) {
    return (unsigned char)SendMsg (SCI_GETCHARAT, pos, 0);
}

// Returns the position of the caret.
int wxScintilla::GetCurrentPos() {
    return SendMsg (SCI_GETCURRENTPOS, 0, 0);
}

// Returns the position of the opposite end of the selection to the caret.
int wxScintilla::GetAnchor() {
    return SendMsg (SCI_GETANCHOR, 0, 0);
}

// Returns the style byte at the position.
int wxScintilla::GetStyleAt (int pos) {
    return (unsigned char)SendMsg (SCI_GETSTYLEAT, pos, 0);
}

// Redoes the next action on the undo history.
void wxScintilla::Redo() {
    SendMsg (SCI_REDO, 0, 0);
}

// Choose between collecting actions into the undo
// history and discarding them.
void wxScintilla::SetUndoCollection (bool collectUndo) {
    SendMsg (SCI_SETUNDOCOLLECTION, collectUndo, 0);
}

// Select all the text in the document.
void wxScintilla::SelectAll() {
    SendMsg (SCI_SELECTALL, 0, 0);
}

// Remember the current position in the undo history as the position
// at which the document was saved.
void wxScintilla::SetSavePoint() {
    SendMsg (SCI_SETSAVEPOINT, 0, 0);
}

// Retrieve a buffer of cells.
wxMemoryBuffer wxScintilla::GetStyledText (int startPos, int endPos) {
        wxMemoryBuffer buf;
        if (endPos < startPos) {
            int temp = startPos;
            startPos = endPos;
            endPos = temp;
        }
        int len = endPos - startPos;
        if (!len) return buf;
        TextRange tr;
        tr.lpstrText = (char*)buf.GetWriteBuf(len*2+1);
        tr.chrg.cpMin = startPos;
        tr.chrg.cpMax = endPos;
        len = SendMsg (SCI_GETSTYLEDTEXT, 0, (long)&tr);
        buf.UngetWriteBuf(len);
        return buf;
}

// Are there any redoable actions in the undo history?
bool wxScintilla::CanRedo() {
    return SendMsg (SCI_CANREDO, 0, 0) != 0;
}

// Retrieve the line number at which a particular marker is located.
int wxScintilla::MarkerLineFromHandle (int handle) {
    return SendMsg (SCI_MARKERLINEFROMHANDLE, handle, 0);
}

// Delete a marker.
void wxScintilla::MarkerDeleteHandle (int handle) {
    SendMsg (SCI_MARKERDELETEHANDLE, handle, 0);
}

// Is undo history being collected?
bool wxScintilla::GetUndoCollection() {
    return SendMsg (SCI_GETUNDOCOLLECTION, 0, 0) != 0;
}

// Are white space characters currently visible?
// Returns one of SCWS_* constants.
int wxScintilla::GetViewWhiteSpace() {
    return SendMsg (SCI_GETVIEWWS, 0, 0);
}

// Make white space characters invisible, always visible or visible outside indentation.
void wxScintilla::SetViewWhiteSpace (int viewWS) {
    SendMsg (SCI_SETVIEWWS, viewWS, 0);
}

// Find the position from a point within the window.
int wxScintilla::PositionFromPoint (wxPoint pt) {
        return SendMsg (SCI_POSITIONFROMPOINT, pt.x, pt.y);
}

// Find the position from a point within the window but return
// INVALID_POSITION if not close to text.
int wxScintilla::PositionFromPointClose (int x, int y) {
    return SendMsg (SCI_POSITIONFROMPOINTCLOSE, x, y);
}

// Set caret to start of a line and ensure it is visible.
void wxScintilla::GotoLine (int line) {
    SendMsg (SCI_GOTOLINE, line, 0);
}

// Set caret to a position and ensure it is visible.
void wxScintilla::GotoPos (int pos) {
    SendMsg (SCI_GOTOPOS, pos, 0);
}

// Set the selection anchor to a position. The anchor is the opposite
// end of the selection from the caret.
void wxScintilla::SetAnchor (int posAnchor) {
    SendMsg (SCI_SETANCHOR, posAnchor, 0);
}

// Retrieve the text of the line containing the caret.
// Returns the index of the caret on the line.
wxString wxScintilla::GetCurLine (int* linePos) {
    int len = LineLength(GetCurrentLine());
    if (!len) {
        if (linePos) *linePos = 0;
        return wxEmptyString;
    }
    wxMemoryBuffer mbuf(len+1);
    char* buf = (char*)mbuf.GetWriteBuf(len+1);
    int pos = SendMsg (SCI_GETCURLINE, len+1, (long)buf);
    mbuf.UngetWriteBuf(len);
    mbuf.AppendByte(0);
    if (linePos) *linePos = pos;
    return sci2wx(buf);
}

// Retrieve the position of the last correctly styled character.
int wxScintilla::GetEndStyled() {
    return SendMsg (SCI_GETENDSTYLED, 0, 0);
}

// Convert all line endings in the document to one mode.
void wxScintilla::ConvertEOLs (int eolMode) {
    SendMsg (SCI_CONVERTEOLS, eolMode, 0);
}

// Retrieve the current end of line mode - one of CRLF, CR, or LF.
int wxScintilla::GetEOLMode() {