wxWidgets/samples/docview/doc.cpp

378 lines
8.5 KiB
C++

/////////////////////////////////////////////////////////////////////////////
// Name: doc.cpp
// Purpose: Implements document functionality
// Author: Julian Smart
// Modified by:
// Created: 04/01/98
// RCS-ID: $Id$
// Copyright: (c) Julian Smart
// Licence: wxWindows license
/////////////////////////////////////////////////////////////////////////////
#ifdef __GNUG__
// #pragma implementation
#endif
// For compilers that support precompilation, includes "wx/wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#ifndef WX_PRECOMP
#include "wx/wx.h"
#endif
#include "wx/txtstrm.h"
#ifdef __WXMAC__
#include "wx/filename.h"
#endif
#if !wxUSE_DOC_VIEW_ARCHITECTURE
#error You must set wxUSE_DOC_VIEW_ARCHITECTURE to 1 in setup.h!
#endif
#include "doc.h"
#include "view.h"
IMPLEMENT_DYNAMIC_CLASS(DrawingDocument, wxDocument)
DrawingDocument::~DrawingDocument(void)
{
WX_CLEAR_LIST(wxList, doodleSegments);
}
#if wxUSE_STD_IOSTREAM
wxSTD ostream& DrawingDocument::SaveObject(wxSTD ostream& stream)
{
wxDocument::SaveObject(stream);
wxInt32 n = doodleSegments.GetCount();
stream << n << '\n';
wxList::compatibility_iterator node = doodleSegments.GetFirst();
while (node)
{
DoodleSegment *segment = (DoodleSegment *)node->GetData();
segment->SaveObject(stream);
stream << '\n';
node = node->GetNext();
}
return stream;
}
#else
wxOutputStream& DrawingDocument::SaveObject(wxOutputStream& stream)
{
wxDocument::SaveObject(stream);
wxTextOutputStream text_stream( stream );
wxInt32 n = doodleSegments.GetCount();
text_stream << n << '\n';
wxList::compatibility_iterator node = doodleSegments.GetFirst();
while (node)
{
DoodleSegment *segment = (DoodleSegment *)node->GetData();
segment->SaveObject(stream);
text_stream << '\n';
node = node->GetNext();
}
return stream;
}
#endif
#if wxUSE_STD_IOSTREAM
wxSTD istream& DrawingDocument::LoadObject(wxSTD istream& stream)
{
wxDocument::LoadObject(stream);
wxInt32 n = 0;
stream >> n;
for (int i = 0; i < n; i++)
{
DoodleSegment *segment = new DoodleSegment;
segment->LoadObject(stream);
doodleSegments.Append(segment);
}
return stream;
}
#else
wxInputStream& DrawingDocument::LoadObject(wxInputStream& stream)
{
wxDocument::LoadObject(stream);
wxTextInputStream text_stream( stream );
wxInt32 n = 0;
text_stream >> n;
for (int i = 0; i < n; i++)
{
DoodleSegment *segment = new DoodleSegment;
segment->LoadObject(stream);
doodleSegments.Append(segment);
}
return stream;
}
#endif
DoodleSegment::DoodleSegment(DoodleSegment& seg)
{
wxList::compatibility_iterator node = seg.lines.GetFirst();
while (node)
{
DoodleLine *line = (DoodleLine *)node->GetData();
DoodleLine *newLine = new DoodleLine;
newLine->x1 = line->x1;
newLine->y1 = line->y1;
newLine->x2 = line->x2;
newLine->y2 = line->y2;
lines.Append(newLine);
node = node->GetNext();
}
}
DoodleSegment::~DoodleSegment(void)
{
WX_CLEAR_LIST(wxList, lines);
}
#if wxUSE_STD_IOSTREAM
wxSTD ostream& DoodleSegment::SaveObject(wxSTD ostream& stream)
{
wxInt32 n = lines.GetCount();
stream << n << '\n';
wxList::compatibility_iterator node = lines.GetFirst();
while (node)
{
DoodleLine *line = (DoodleLine *)node->GetData();
stream << line->x1 << " " <<
line->y1 << " " <<
line->x2 << " " <<
line->y2 << "\n";
node = node->GetNext();
}
return stream;
}
#else
wxOutputStream &DoodleSegment::SaveObject(wxOutputStream& stream)
{
wxTextOutputStream text_stream( stream );
wxInt32 n = lines.GetCount();
text_stream << n << _T('\n');
wxList::compatibility_iterator node = lines.GetFirst();
while (node)
{
DoodleLine *line = (DoodleLine *)node->GetData();
text_stream << line->x1 << _T(" ") <<
line->y1 << _T(" ") <<
line->x2 << _T(" ") <<
line->y2 << _T("\n");
node = node->GetNext();
}
return stream;
}
#endif
#if wxUSE_STD_IOSTREAM
wxSTD istream& DoodleSegment::LoadObject(wxSTD istream& stream)
{
wxInt32 n = 0;
stream >> n;
for (int i = 0; i < n; i++)
{
DoodleLine *line = new DoodleLine;
stream >> line->x1 >>
line->y1 >>
line->x2 >>
line->y2;
lines.Append(line);
}
return stream;
}
#else
wxInputStream &DoodleSegment::LoadObject(wxInputStream& stream)
{
wxTextInputStream text_stream( stream );
wxInt32 n = 0;
text_stream >> n;
for (int i = 0; i < n; i++)
{
DoodleLine *line = new DoodleLine;
text_stream >> line->x1 >>
line->y1 >>
line->x2 >>
line->y2;
lines.Append(line);
}
return stream;
}
#endif
void DoodleSegment::Draw(wxDC *dc)
{
wxList::compatibility_iterator node = lines.GetFirst();
while (node)
{
DoodleLine *line = (DoodleLine *)node->GetData();
dc->DrawLine(line->x1, line->y1, line->x2, line->y2);
node = node->GetNext();
}
}
/*
* Implementation of drawing command
*/
DrawingCommand::DrawingCommand(const wxString& name, int command, DrawingDocument *ddoc, DoodleSegment *seg):
wxCommand(true, name)
{
doc = ddoc;
segment = seg;
cmd = command;
}
DrawingCommand::~DrawingCommand(void)
{
if (segment)
delete segment;
}
bool DrawingCommand::Do(void)
{
switch (cmd)
{
case DOODLE_CUT:
{
// Cut the last segment
if (doc->GetDoodleSegments().GetCount() > 0)
{
wxList::compatibility_iterator node = doc->GetDoodleSegments().GetLast();
if (segment)
delete segment;
segment = (DoodleSegment *)node->GetData();
doc->GetDoodleSegments().Erase(node);
doc->Modify(true);
doc->UpdateAllViews();
}
break;
}
case DOODLE_ADD:
{
doc->GetDoodleSegments().Append(new DoodleSegment(*segment));
doc->Modify(true);
doc->UpdateAllViews();
break;
}
}
return true;
}
bool DrawingCommand::Undo(void)
{
switch (cmd)
{
case DOODLE_CUT:
{
// Paste the segment
if (segment)
{
doc->GetDoodleSegments().Append(segment);
doc->Modify(true);
doc->UpdateAllViews();
segment = (DoodleSegment *) NULL;
}
doc->Modify(true);
doc->UpdateAllViews();
break;
}
case DOODLE_ADD:
{
// Cut the last segment
if (doc->GetDoodleSegments().GetCount() > 0)
{
wxList::compatibility_iterator node = doc->GetDoodleSegments().GetLast();
DoodleSegment *seg = (DoodleSegment *)node->GetData();
delete seg;
doc->GetDoodleSegments().Erase(node);
doc->Modify(true);
doc->UpdateAllViews();
}
}
}
return true;
}
IMPLEMENT_DYNAMIC_CLASS(TextEditDocument, wxDocument)
// Since text windows have their own method for saving to/loading from files,
// we override OnSave/OpenDocument instead of Save/LoadObject
bool TextEditDocument::OnSaveDocument(const wxString& filename)
{
TextEditView *view = (TextEditView *)GetFirstView();
if (!view->textsw->SaveFile(filename))
return false;
Modify(false);
#ifdef __WXMAC__
wxFileName fn(filename) ;
fn.MacSetDefaultTypeAndCreator() ;
#endif
return true;
}
bool TextEditDocument::OnOpenDocument(const wxString& filename)
{
TextEditView *view = (TextEditView *)GetFirstView();
if (!view->textsw->LoadFile(filename))
return false;
SetFilename(filename, true);
Modify(false);
UpdateAllViews();
return true;
}
bool TextEditDocument::IsModified(void) const
{
TextEditView *view = (TextEditView *)GetFirstView();
if (view)
{
return (wxDocument::IsModified() || view->textsw->IsModified());
}
else
return wxDocument::IsModified();
}
void TextEditDocument::Modify(bool mod)
{
TextEditView *view = (TextEditView *)GetFirstView();
wxDocument::Modify(mod);
if (!mod && view && view->textsw)
view->textsw->DiscardEdits();
}