INTEGRATION: CWS draw12 (1.1.2); FILE ADDED

2003/05/16 14:54:08 af 1.1.2.1: #109147# Added a new class for color look-up.

svx/source/accessibility/DGColorNameLookUp.cxx

+/*************************************************************************
+ *
+ *  $RCSfile: DGColorNameLookUp.cxx,v $
+ *
+ *  $Revision: 1.2 $
+ *
+ *  last change: $Author: vg $ $Date: 2003-05-26 09:05:12 $
+ *
+ *  The Contents of this file are made available subject to the terms of
+ *  either of the following licenses
+ *
+ *         - GNU Lesser General Public License Version 2.1
+ *         - Sun Industry Standards Source License Version 1.1
+ *
+ *  Sun Microsystems Inc., October, 2000
+ *
+ *  GNU Lesser General Public License Version 2.1
+ *  =============================================
+ *  Copyright 2000 by Sun Microsystems, Inc.
+ *  901 San Antonio Road, Palo Alto, CA 94303, USA
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License version 2.1, as published by the Free Software Foundation.
+ *
+ *  This library 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 for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public
+ *  License along with this library; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ *  MA  02111-1307  USA
+ *
+ *
+ *  Sun Industry Standards Source License Version 1.1
+ *  =================================================
+ *  The contents of this file are subject to the Sun Industry Standards
+ *  Source License Version 1.1 (the "License"); You may not use this file
+ *  except in compliance with the License. You may obtain a copy of the
+ *  License at http://www.openoffice.org/license.html.
+ *
+ *  Software provided under this License is provided on an "AS IS" basis,
+ *  WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
+ *  WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
+ *  MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
+ *  See the License for the specific provisions governing your rights and
+ *  obligations concerning the Software.
+ *
+ *  The Initial Developer of the Original Code is: Sun Microsystems, Inc.
+ *
+ *  Copyright: 2000 by Sun Microsystems, Inc.
+ *
+ *  All Rights Reserved.
+ *
+ *  Contributor(s): _______________________________________
+ *
+ *
+ ************************************************************************/
+
+#ifndef _SVX_ACCESSIBILITY_DG_COLOR_NAME_LOOK_UP_HXX
+#include "DGColorNameLookUp.hxx"
+#endif
+
+#ifndef _COM_SUN_STAR_CONTAINER_XNAMECONTAINER_HPP_
+#include <com/sun/star/container/XNameContainer.hpp>
+#endif
+#ifndef _COM_SUN_STAR_CONTAINER_XNAMEACCESS_HPP_
+#include <com/sun/star/container/XNameAccess.hpp>
+#endif
+#ifndef _COM_SUN_STAR_LANG_XMULTISERVICEFACTORY_HPP_
+#include <com/sun/star/lang/XMultiServiceFactory.hpp>
+#endif
+#ifndef _COMPHELPER_PROCESSFACTORY_HXX_
+#include <comphelper/processfactory.hxx>
+#endif
+#ifndef _VOS_MUTEX_HXX_
+#include <vos/mutex.hxx>
+#endif
+#ifndef _SV_SVAPP_HXX
+#include <vcl/svapp.hxx>
+#endif
+
+
+using ::rtl::OUString;
+using namespace ::com::sun::star;
+
+namespace accessibility {
+
+// Initialize the class instance with NULL.  A true instance is created only
+// when the static <member>Instance</member> is called for the first time.
+DGColorNameLookUp* DGColorNameLookUp::mpInstance = NULL;
+
+DGColorNameLookUp& DGColorNameLookUp::Instance (void)
+{
+    // Using double check pattern to make sure that exactly one instance of
+    // the shape type handler is instantiated.
+    if (mpInstance == NULL)
+    {
+        ::vos::OGuard aGuard (::Application::GetSolarMutex());
+        if (mpInstance == NULL)
+        {
+            // Create the single instance of the color name look up.
+            mpInstance = new DGColorNameLookUp();
+        }
+    }
+
+    return *mpInstance;
+}
+
+
+
+
+OUString DGColorNameLookUp::LookUpColor (long int nColor) const
+{
+    OUString sColorName;
+    tColorValueToNameMap::const_iterator I;
+    I = maColorValueToNameMap.find (nColor);
+    if (I != maColorValueToNameMap.end())
+        // Found the color value.  Return the associated name.
+        sColorName = I->second;
+    else
+    {
+        // Did not find the given color.  Append its rgb tuple to the
+        // description.
+        ::rtl::OUStringBuffer sNameBuffer;
+        sNameBuffer.append (sal_Unicode('#'));
+        sNameBuffer.append (nColor, 16);
+        sColorName = sNameBuffer.makeStringAndClear();
+    }
+    return sColorName;
+}
+
+
+
+
+DGColorNameLookUp::DGColorNameLookUp (void)
+{
+    uno::Sequence<OUString> aNames;
+    uno::Reference<container::XNameAccess> xNA;
+
+    try
+    {
+        // Create color table in which to look up the given color.
+        uno::Reference<container::XNameContainer> xColorTable (
+            ::comphelper::getProcessServiceFactory()->createInstance(
+                OUString::createFromAscii("com.sun.star.drawing.ColorTable")),
+            uno::UNO_QUERY);
+
+        // Get list of color names in order to iterate over the color table.
+        xNA = uno::Reference<container::XNameAccess>(xColorTable, uno::UNO_QUERY);
+        if (xNA.is())
+        {
+            // Look the solar mutex here as workarround for missing lock in
+            // called function.
+            ::vos::OGuard aGuard (::Application::GetSolarMutex());
+            aNames = xNA->getElementNames();
+        }
+    }
+    catch (uno::RuntimeException e)
+    {
+        // When an excpetion occured then whe have an empty name sequence
+        // and the loop below is not entered.
+    }
+
+    // Fill the map to convert from numerical color values to names.
+    if (xNA.is())
+        for (long int i=0; i<aNames.getLength(); i++)
+        {
+            // Get the numerical value for the i-th color name.
+            try
+            {
+                uno::Any aColor (xNA->getByName (aNames[i]));
+                long nColor;
+                aColor >>= nColor;
+                maColorValueToNameMap[nColor] = aNames[i];
+            }
+            catch (uno::RuntimeException e)
+            {
+                // Ignore the exception: the color who lead to the excpetion
+                // is not included into the map.
+            }
+        }
+}
+
+
+
+
+DGColorNameLookUp::~DGColorNameLookUp (void)
+{
+    maColorValueToNameMap.clear();
+}
+
+} // end of namespace accessibility