Fix crash in wxDC::GetMultiLineTextExtent() after last commit.

[wxWidgets.git] / src / gtk / animate.cpp

diff --git a/src/gtk/animate.cpp b/src/gtk/animate.cpp
index 206b36180e8722212c535f81c2730e3a704885df..a70e92e87217d5342af4e8ab2b65f39ad60b179f 100644 (file)
--- a/src/gtk/animate.cpp
+++ b/src/gtk/animate.cpp
@@ -23,6 +23,8 @@
 #endif
 
 #include "wx/wfstream.h"
+#include "wx/gtk/private.h"
+
 #include <gtk/gtk.h>
 
 
@@ -83,7 +85,7 @@ wxAnimation& wxAnimation::operator=(const wxAnimation& that)
 bool wxAnimation::LoadFile(const wxString &name, wxAnimationType WXUNUSED(type))
 {
     UnRef();
-    m_pixbuf = gdk_pixbuf_animation_new_from_file(name.fn_str(), NULL);
+    m_pixbuf = gdk_pixbuf_animation_new_from_file(wxGTK_CONV_FN(name), NULL);
     return IsOk();
 }
 
@@ -115,9 +117,11 @@ bool wxAnimation::Load(wxInputStream &stream, wxAnimationType type)
     else
         loader = gdk_pixbuf_loader_new();
 
-    if (!loader)
+    if (!loader ||
+        error != NULL)  // even if the loader was allocated, an error could have happened
     {
-        wxLogDebug(wxT("Could not create the loader for '%s' animation type"), anim_type);
+        wxLogDebug(wxT("Could not create the loader for '%s' animation type: %s"),
+                   anim_type, error->message);
         return false;
     }
 
@@ -125,29 +129,48 @@ bool wxAnimation::Load(wxInputStream &stream, wxAnimationType type)
     g_signal_connect(loader, "area-updated", G_CALLBACK(gdk_pixbuf_area_updated), this);
 
     guchar buf[2048];
+    bool data_written = false;
     while (stream.IsOk())
     {
         // read a chunk of data
-        stream.Read(buf, sizeof(buf));
+        if (!stream.Read(buf, sizeof(buf)) &&
+            stream.GetLastError() != wxSTREAM_EOF)   // EOF is OK for now
+        {
+            // gdk_pixbuf_loader_close wants the GError == NULL
+            gdk_pixbuf_loader_close(loader, NULL);
+            return false;
+        }
 
         // fetch all data into the loader
         if (!gdk_pixbuf_loader_write(loader, buf, stream.LastRead(), &error))
         {
-            gdk_pixbuf_loader_close(loader, &error);
-            wxLogDebug(wxT("Could not write to the loader"));
+            wxLogDebug(wxT("Could not write to the loader: %s"), error->message);
+
+            // gdk_pixbuf_loader_close wants the GError == NULL
+            gdk_pixbuf_loader_close(loader, NULL);
             return false;
         }
+
+        data_written = true;
+    }
+
+    if (!data_written)
+    {
+        wxLogDebug("Could not read data from the stream...");
+        return false;
     }
 
-    // load complete
+    // load complete: gdk_pixbuf_loader_close will now check if the data we
+    // wrote inside the pixbuf loader does make sense and will give an error
+    // if it doesn't (because of a truncated file, corrupted data or whatelse)
     if (!gdk_pixbuf_loader_close(loader, &error))
     {
-        wxLogDebug(wxT("Could not close the loader"));
+        wxLogDebug(wxT("Could not close the loader: %s"), error->message);
         return false;
     }
 
     // wait until we get the last area_updated signal
-    return true;
+    return data_written;
 }
 
 wxImage wxAnimation::GetFrame(unsigned int WXUNUSED(frame)) const
@@ -210,7 +233,7 @@ bool wxAnimationCtrl::Create( wxWindow *parent, wxWindowID id,
     SetWindowStyle(style);
 
     m_widget = gtk_image_new();
-    gtk_widget_show(m_widget);
+    g_object_ref(m_widget);
 
     m_parent->DoAddChild( this );
 
@@ -235,6 +258,8 @@ wxAnimationCtrl::~wxAnimationCtrl()
 bool wxAnimationCtrl::LoadFile(const wxString &filename, wxAnimationType type)
 {
     wxFileInputStream fis(filename);
+    if (!fis.IsOk())
+        return false;
     return Load(fis, type);
 }
 
@@ -338,20 +363,8 @@ void wxAnimationCtrl::DisplayStaticImage()
     if (m_bmpStaticReal.IsOk())
     {
         // show inactive bitmap
-        GdkBitmap *mask = (GdkBitmap *) NULL;
-        if (m_bmpStaticReal.GetMask())
-            mask = m_bmpStaticReal.GetMask()->GetBitmap();
-
-        if (m_bmpStaticReal.HasPixbuf())
-        {
-            gtk_image_set_from_pixbuf(GTK_IMAGE(m_widget),
+        gtk_image_set_from_pixbuf(GTK_IMAGE(m_widget),
                                       m_bmpStaticReal.GetPixbuf());
-        }
-        else
-        {
-            gtk_image_set_from_pixmap(GTK_IMAGE(m_widget),
-                                      m_bmpStaticReal.GetPixmap(), mask);
-        }
     }
     else
     {