add support for loading wxIconBundles from streams

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@59929 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/iconbndl.h

@@ -19,6 +19,8 @@
 
 #include "wx/dynarray.h"
 
+class WXDLLIMPEXP_FWD_BASE wxInputStream;
+
 WX_DECLARE_EXPORTED_OBJARRAY(wxIcon, wxIconArray);
 
 // this class can't load bitmaps of type wxBITMAP_TYPE_ICO_RESOURCE,
@@ -31,7 +33,10 @@ public:
     wxIconBundle();
 
     // initializes the bundle with the icon(s) found in the file
-    wxIconBundle(const wxString& file, wxBitmapType type);
+    wxIconBundle(const wxString& file, wxBitmapType type = wxBITMAP_TYPE_ANY);
+#if wxUSE_STREAMS
+    wxIconBundle(wxInputStream& stream, wxBitmapType type = wxBITMAP_TYPE_ANY);
+#endif
 
     // initializes the bundle with a single icon
     wxIconBundle(const wxIcon& icon);
@@ -41,7 +46,10 @@ public:
     // adds all the icons contained in the file to the collection,
     // if the collection already contains icons with the same
     // width and height, they are replaced
-    void AddIcon(const wxString& file, wxBitmapType type);
+    void AddIcon(const wxString& file, wxBitmapType type = wxBITMAP_TYPE_ANY);
+#if wxUSE_STREAMS
+    void AddIcon(wxInputStream& stream, wxBitmapType type = wxBITMAP_TYPE_ANY);
+#endif
 
     // adds the icon to the collection, if the collection already
     // contains an icon with the same width and height, it is

interface/wx/iconbndl.h

@@ -29,7 +29,14 @@ public:
     /**
         Initializes the bundle with the icon(s) found in the file.
     */
-    wxIconBundle(const wxString& file, wxBitmapType type);
+    wxIconBundle(const wxString& file, wxBitmapType type = wxBITMAP_TYPE_ANY);
+
+    /**
+        Initializes the bundle with the icon(s) found in the stream.
+
+        @since 2.9.0
+    */
+    wxIconBundle(wxInputStream& stream, wxBitmapType type = wxBITMAP_TYPE_ANY);
 
     /**
         Initializes the bundle with a single icon.
@@ -47,11 +54,20 @@ public:
     virtual ~wxIconBundle();
 
     /**
-        Adds all the icons contained in the file to the bundle; if the collection
-        already contains icons with the same width and height, they are replaced
-        by the new ones.
+        Adds all the icons contained in the file to the bundle; if the
+        collection already contains icons with the same width and height, they
+        are replaced by the new ones.
     */
-    void AddIcon(const wxString& file, wxBitmapType type);
+    void AddIcon(const wxString& file, wxBitmapType type = wxBITMAP_TYPE_ANY);
+
+    /**
+        Adds all the icons contained in the stream to the bundle; if the
+        collection already contains icons with the same width and height, they
+        are replaced by the new ones.
+
+        @since 2.9.0
+    */
+    void AddIcon(wxInputStream& stream, wxBitmapType type = wxBITMAP_TYPE_ANY);
 
     /**
         Adds the icon to the collection; if the collection already

src/common/iconbndl.cpp

@@ -23,6 +23,7 @@
     #include "wx/intl.h"
     #include "wx/bitmap.h"
     #include "wx/image.h"
+    #include "wx/stream.h"
 #endif
 
 #include "wx/arrimpl.cpp"
@@ -60,6 +61,14 @@ wxIconBundle::wxIconBundle(const wxString& file, wxBitmapType type)
     AddIcon(file, type);
 }
 
+#if wxUSE_STREAMS
+wxIconBundle::wxIconBundle(wxInputStream& stream, wxBitmapType type)
+            : wxGDIObject()
+{
+    AddIcon(stream, type);
+}
+#endif // wxUSE_STREAMS
+
 wxIconBundle::wxIconBundle(const wxIcon& icon)
             : wxGDIObject()
 {
@@ -81,6 +90,41 @@ void wxIconBundle::DeleteIcons()
     UnRef();
 }
 
+namespace
+{
+
+// Adds icon from 'input' to the bundle. Shows 'errorMessage' on failure
+// (it must contain "%d", because it is used to report # of image in the file
+// that failed to load):
+template<typename T>
+void DoAddIcon(wxIconBundle& bundle,
+               T& input, wxBitmapType type,
+               const wxString& errorMessage)
+{
+#if wxUSE_IMAGE && (!defined(__WXMSW__) || wxUSE_WXDIB)
+    wxImage image;
+
+    const size_t count = wxImage::GetImageCount(input, type);
+    for ( size_t i = 0; i < count; ++i )
+    {
+        if ( !image.LoadFile(input, type, i) )
+        {
+            wxLogError(errorMessage, i);
+            continue;
+        }
+
+        wxIcon tmp;
+        tmp.CopyFromBitmap(wxBitmap(image));
+        bundle.AddIcon(tmp);
+    }
+#else // !wxUSE_IMAGE
+    wxUnusedVar(input);
+    wxUnusedVar(type);
+#endif // wxUSE_IMAGE/!wxUSE_IMAGE
+}
+
+} // anonymous namespace
+
 void wxIconBundle::AddIcon(const wxString& file, wxBitmapType type)
 {
 #ifdef __WXMAC__
@@ -96,29 +140,21 @@ void wxIconBundle::AddIcon(const wxString& file, wxBitmapType type)
     }
 #endif // __WXMAC__
 
-#if wxUSE_IMAGE && (!defined(__WXMSW__) || wxUSE_WXDIB)
-    wxImage image;
-
-    const size_t count = wxImage::GetImageCount( file, type );
-    for ( size_t i = 0; i < count; ++i )
-    {
-        if ( !image.LoadFile( file, type, i ) )
-        {
-            wxLogError( _("Failed to load image %d from file '%s'."),
-                        i, file.c_str() );
-            continue;
-        }
-
-        wxIcon tmp;
-        tmp.CopyFromBitmap(wxBitmap(image));
-        AddIcon(tmp);
-    }
-#else // !wxUSE_IMAGE
-    wxUnusedVar(file);
-    wxUnusedVar(type);
-#endif // wxUSE_IMAGE/!wxUSE_IMAGE
+    DoAddIcon
+    (
+        *this,
+        file, type,
+        wxString::Format(_("Failed to load image %%d from file '%s'."), file)
+    );
 }
 
+#if wxUSE_STREAMS
+void wxIconBundle::AddIcon(wxInputStream& stream, wxBitmapType type)
+{
+    DoAddIcon(*this, stream, type, _("Failed to load image %d from stream."));
+}
+#endif // wxUSE_STREAMS
+
 wxIcon wxIconBundle::GetIcon(const wxSize& size) const
 {
     const size_t count = GetIconCount();