fixing incorrect scrolling - which happened at least under OSX ...

[wxWidgets.git] / samples / docview / doc.cpp

diff --git a/samples/docview/doc.cpp b/samples/docview/doc.cpp
index cf53892ea2403fc326fba2e83d91b8085f312a53..e093d82ae3c578ec913eb3657fe025ba20498099 100644 (file)
--- a/samples/docview/doc.cpp
+++ b/samples/docview/doc.cpp
@@ -7,7 +7,7 @@
 // RCS-ID:      $Id$
 // Copyright:   (c) 1998 Julian Smart
 //              (c) 2008 Vadim Zeitlin
-// Licence:     wxWindows license
+// Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 // ----------------------------------------------------------------------------
@@ -79,6 +79,16 @@ DocumentIstream& DrawingDocument::LoadObject(DocumentIstream& istream)
 
     wxInt32 count = 0;
     stream >> count;
+    if ( count < 0 )
+    {
+        wxLogWarning("Drawing document corrupted: invalid segments count.");
+#if wxUSE_STD_IOSTREAM
+        istream.clear(std::ios::badbit);
+#else
+        istream.Reset(wxSTREAM_READ_ERROR);
+#endif
+        return istream;
+    }
 
     for ( int n = 0; n < count; n++ )
     {
@@ -250,56 +260,39 @@ wxTextCtrl* TextEditDocument::GetTextCtrl() const
 }
 
 // ----------------------------------------------------------------------------
-// wxImageDocument implementation
+// ImageDocument and ImageDetailsDocument implementation
 // ----------------------------------------------------------------------------
 
-/////////////////////////////////////////////////////////////////////////////
-// wxImageDocument
-
-IMPLEMENT_DYNAMIC_CLASS(wxImageDocument, wxDocument)
-
-wxImageDocument::wxImageDocument() : wxDocument()
-{
-}
+IMPLEMENT_DYNAMIC_CLASS(ImageDocument, wxDocument)
 
-wxImageDocument::~wxImageDocument()
+bool ImageDocument::DoOpenDocument(const wxString& file)
 {
+    return m_image.LoadFile(file);
 }
 
-bool wxImageDocument::DeleteContents()
+bool ImageDocument::OnOpenDocument(const wxString& filename)
 {
-    bool ok = wxDocument::DeleteContents();
-    if (ok && m_image.IsOk())
-    {
-        m_image.Destroy();
-    }
-    return ok;
-}
+    if ( !wxDocument::OnOpenDocument(filename) )
+        return false;
 
-bool wxImageDocument::SaveFile(wxOutputStream* stream, wxBitmapType type) const
-{
-    return m_image.IsOk() && m_image.SaveFile(*stream, type);
-}
+    // we don't have a wxDocTemplate for the image details document as it's
+    // never created by wxWidgets automatically, instead just do it manually
+    ImageDetailsDocument * const docDetails = new ImageDetailsDocument(this);
+    docDetails->SetFilename(filename);
 
-bool wxImageDocument::DoOpenDocument(const wxString& file)
-{
-    wxFileInputStream stream(file);
-    return stream.IsOk() && DoOpenDocument(&stream);
-}
+    new ImageDetailsView(docDetails);
 
-bool wxImageDocument::DoSaveDocument(const wxString& file)
-{
-    wxFileOutputStream stream(file);
-    return stream.IsOk() && DoSaveDocument(&stream);
+    return true;
 }
 
-bool wxImageDocument::DoOpenDocument(wxInputStream* stream)
+ImageDetailsDocument::ImageDetailsDocument(ImageDocument *parent)
+    : wxDocument(parent)
 {
-    return m_image.LoadFile(*stream);
-}
+    const wxImage image = parent->GetImage();
 
-bool wxImageDocument::DoSaveDocument(wxOutputStream* stream) const
-{
-    return m_image.IsOk() && SaveFile(stream, m_image.GetType());
+    m_size.x = image.GetWidth();
+    m_size.y = image.GetHeight();
+    m_numColours = image.CountColours();
+    m_type = image.GetType();
+    m_hasAlpha = image.HasAlpha();
 }
-