1 files changed, 94 insertions, 0 deletions
diff --git a/sd/source/ui/slidesorter/inc/view/SlsFontProvider.hxx b/sd/source/ui/slidesorter/inc/view/SlsFontProvider.hxx
new file mode 100644
index 000000000000..2b71c0e50152
--- /dev/null
+++ b/sd/source/ui/slidesorter/inc/view/SlsFontProvider.hxx
@@ -0,0 +1,94 @@
+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org.  If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+#ifndef SD_SLIDESORTER_VIEW_FONT_PROVIDER_HXX
+#define SD_SLIDESORTER_VIEW_FONT_PROVIDER_HXX
+
+#include "tools/SdGlobalResourceContainer.hxx"
+
+#include <boost/shared_ptr.hpp>
+#include <vcl/mapmod.hxx>
+
+class Font;
+class OutputDevice;
+class VclWindowEvent;
+
+namespace sd { namespace slidesorter { namespace view {
+
+/** This simple singleton class provides fonts that are scaled so that they
+    have a fixed height on the given device regardless of its map mode.
+*/
+class FontProvider
+    : public SdGlobalResource
+{
+public:
+    typedef ::boost::shared_ptr<Font> SharedFontPointer;
+
+    /** Return the single instance of this class.  Throws a RuntimeException
+        when no instance can be created.
+    */
+    static FontProvider& Instance (void);
+
+    /** Return a font that is scaled according to the current map mode of
+        the given device.  Repeated calls with a device, not necessarily the
+        same device, with the same map mode will return the same font.  The
+        first call with a different map mode will release the old font and
+        create a new one that is correctly scaled.
+    */
+    SharedFontPointer GetFont (const OutputDevice& rDevice);
+
+    /** Call this method to tell an object to release its currently used
+        font.  The next call to GetFont() will then create a new one.
+        Typically called after a DataChange event when for instance a system
+        font has been modified.
+    */
+    void Invalidate (void);
+
+private:
+    static FontProvider* mpInstance;
+
+    /** The font that was created by a previous call to GetFont().  It is
+        replaced by another one only when GetFont() is called with a device
+        with a different map mode or by a call to Invalidate().
+    */
+    SharedFontPointer maFont;
+    /** The mape mode for which maFont was created.
+    */
+    MapMode maMapMode;
+
+    FontProvider (void);
+    virtual ~FontProvider (void);
+
+    // Copy constructor is not implemented.
+    FontProvider (const FontProvider&);
+    // Assignment operator is not implemented.
+    FontProvider& operator= (const FontProvider&);
+};
+
+} } } // end of namespace ::sd::slidesorter::view
+
+#endif