basic support for temporary fonts

To be used when loading fonts embedded in documents.

Change-Id: I634af1b35eba48872d045e726d1d879f455d6f2c

2 files changed, 66 insertions, 0 deletions

diff --git a/vcl/generic/fontmanager/fontmanager.cxx b/vcl/generic/fontmanager/fontmanager.cxx
index 2a3d29ae8293..7b9294aeecdf 100644
--- a/vcl/generic/fontmanager/fontmanager.cxx
+++ b/vcl/generic/fontmanager/fontmanager.cxx
@@ -43,6 +43,8 @@
 #include "vcl/fontmanager.hxx"
 #include "vcl/strhelper.hxx"
 #include "vcl/ppdparser.hxx"
+#include <vcl/svapp.hxx>
+#include <vcl/outdev.hxx>
 
 #include "tools/urlobj.hxx"
 #include "tools/stream.hxx"
@@ -51,6 +53,7 @@
 #include "osl/file.hxx"
 #include "osl/process.h"
 
+#include <rtl/bootstrap.hxx>
 #include "rtl/tencinfo.h"
 #include "rtl/ustrbuf.hxx"
 #include "rtl/strbuf.hxx"
@@ -1034,6 +1037,7 @@ PrintFontManager::~PrintFontManager()
     delete m_pAtoms;
     if( m_pFontCache )
         delete m_pFontCache;
+    cleanTemporaryFonts();
 }
 
 // -------------------------------------------------------------------------
@@ -1660,6 +1664,8 @@ void PrintFontManager::initialize()
     CALLGRIND_ZERO_STATS();
     #endif
 
+    cleanTemporaryFonts();
+
     long aDirEntBuffer[ (sizeof(struct dirent)+_PC_NAME_MAX)+1 ];
 
     if( ! m_pFontCache )
@@ -3057,4 +3063,41 @@ bool PrintFontManager::readOverrideMetrics()
     return true;
 }
 
+void PrintFontManager::cleanTemporaryFonts()
+{
+    OUString path = "${$BRAND_BASE_DIR/program/" SAL_CONFIGFILE( "bootstrap") "::UserInstallation}";
+    rtl::Bootstrap::expandMacros( path );
+    path += "/user/temp/fonts/";
+    osl::Directory dir( path );
+    dir.reset();
+    for(;;)
+    {
+        osl::DirectoryItem item;
+        if( dir.getNextItem( item ) != osl::Directory::E_None )
+            break;
+        osl::FileStatus status( osl_FileStatus_Mask_FileURL );
+        if( item.getFileStatus( status ) == osl::File::E_None )
+            osl::File::remove( status.getFileURL());
+    }
+}
+
+OUString PrintFontManager::fileUrlForTemporaryFont( const OUString& fontName, const char* fontStyle )
+{
+    OUString path = "${$BRAND_BASE_DIR/program/" SAL_CONFIGFILE( "bootstrap") "::UserInstallation}";
+    rtl::Bootstrap::expandMacros( path );
+    path += "/user/temp/fonts/";
+    osl::Directory::createPath( path );
+    OUString filename = fontName;
+    filename += OStringToOUString( fontStyle, RTL_TEXTENCODING_ASCII_US );
+    filename += ".ttf"; // TODO is it always ttf?
+    return path + filename;
+}
+
+void PrintFontManager::activateTemporaryFont( const OUString& fontName, const OUString& fileUrl )
+{
+    OutputDevice *pDevice = Application::GetDefaultDevice();
+    pDevice->AddTempDevFont( fileUrl, fontName );
+    pDevice->ImplUpdateAllFontData( true );
+}
+
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/inc/vcl/fontmanager.hxx b/vcl/inc/vcl/fontmanager.hxx
index 6666f0ffda0d..81b420031306 100644
--- a/vcl/inc/vcl/fontmanager.hxx
+++ b/vcl/inc/vcl/fontmanager.hxx
@@ -330,6 +330,8 @@ class VCL_PLUGIN_PUBLIC PrintFontManager
     rtl::OString getDirectory( int nAtom ) const;
     int getDirectoryAtom( const rtl::OString& rDirectory, bool bCreate = false );
 
+    void cleanTemporaryFonts();
+
     /* try to initialize fonts from libfontconfig
 
     called from <code>initialize()</code>
@@ -593,6 +595,27 @@ public:
     bool Substitute( FontSelectPattern &rPattern, rtl::OUString& rMissingCodes );
 
     int FreeTypeCharIndex( void *pFace, sal_uInt32 aChar );
+
+    /**
+      Returns an URL for a file where to store contents of a temporary font, or an empty string
+      if this font is already known. The file will be cleaned up automatically as appropriate.
+      Use activateTemporaryFont() to actually enable usage of the font.
+
+      @param fontName name of the font (e.g. 'Times New Roman')
+      @param fontStyle font style, "" for regular, "bi" for bold italic, etc.
+      @since 3.7
+    */
+    OUString fileUrlForTemporaryFont( const OUString& fontName, const char* fontStyle );
+
+    /**
+      Adds the given font to the list of known fonts. The font is used only until application
+      exit.
+
+      @param fontName name of the font (e.g. 'Times New Roman')
+      @param fileUrl URL of the font file
+      @since 3.7
+    */
+    void activateTemporaryFont( const OUString& fontName, const OUString& fileUrl );
 };
 
 } // namespace