KF5 add FontFace implementation

To pass the "Application error: no fonts and no vcl resource found
on your system" failure from OutputDevice::ImplInitFontList.

Just saw there is a SAL_NO_FONT_LOOKUP, which probably also would
have helped.

Change-Id: I2c818313c4f8b0f1d36242281e5c51973315b642

14 files changed, 320 insertions, 20 deletions

diff --git a/vcl/Library_vclplug_kf5.mk b/vcl/Library_vclplug_kf5.mk
index cc518612d0bd..d3b75bb4d79f 100644
--- a/vcl/Library_vclplug_kf5.mk
+++ b/vcl/Library_vclplug_kf5.mk
@@ -78,6 +78,7 @@ $(eval $(call gb_Library_add_libs,vclplug_kf5,\
 $(eval $(call gb_Library_add_exception_objects,vclplug_kf5,\
     vcl/unx/kf5/Kf5Data \
     vcl/unx/kf5/Kf5Frame \
+    vcl/unx/kf5/Kf5FontFace \
     vcl/unx/kf5/Kf5Graphics \
     vcl/unx/kf5/Kf5Graphics_Controls \
     vcl/unx/kf5/Kf5Graphics_GDI \
diff --git a/vcl/inc/PhysicalFontFamily.hxx b/vcl/inc/PhysicalFontFamily.hxx
index 34548785c56d..b782c4fe69f4 100644
--- a/vcl/inc/PhysicalFontFamily.hxx
+++ b/vcl/inc/PhysicalFontFamily.hxx
@@ -20,6 +20,8 @@
 #ifndef INCLUDED_VCL_INC_PHYSICALFONTFAMILY_HXX
 #define INCLUDED_VCL_INC_PHYSICALFONTFAMILY_HXX
 
+#include <vcl/dllapi.h>
+
 #include <set>
 
 #include <unotools/fontcfg.hxx>
@@ -45,7 +47,7 @@ namespace o3tl {
     template<> struct typed_flags<FontTypeFaces> : is_typed_flags<FontTypeFaces, 0xff> {};
 };
 
-class PhysicalFontFamily
+class VCL_PLUGIN_PUBLIC PhysicalFontFamily
 {
 public:
                         PhysicalFontFamily( const OUString& rSearchName );
diff --git a/vcl/inc/fontattributes.hxx b/vcl/inc/fontattributes.hxx
index 83b68f89464b..5487ac621668 100644
--- a/vcl/inc/fontattributes.hxx
+++ b/vcl/inc/fontattributes.hxx
@@ -20,13 +20,14 @@
 #ifndef INCLUDED_VCL_INC_FONTATTRIBUTES_HXX
 #define INCLUDED_VCL_INC_FONTATTRIBUTES_HXX
 
+#include <vcl/dllapi.h>
 #include <rtl/ustring.hxx>
 #include <vcl/vclenum.hxx>
 
 
 /* The following class is extraordinarily similar to ImplFont. */
 
-class FontAttributes
+class VCL_DLLPUBLIC FontAttributes
 {
 public:
     explicit            FontAttributes();
diff --git a/vcl/inc/impfontcharmap.hxx b/vcl/inc/impfontcharmap.hxx
index 197333a49b6e..67ba048153fa 100644
--- a/vcl/inc/impfontcharmap.hxx
+++ b/vcl/inc/impfontcharmap.hxx
@@ -51,7 +51,7 @@ private:
     int                 mnCharCount;      // covered codepoints
 };
 
-bool ParseCMAP( const unsigned char* pRawData, int nRawLength, CmapResult& );
+bool VCL_DLLPUBLIC ParseCMAP( const unsigned char* pRawData, int nRawLength, CmapResult& );
 
 #endif // INCLUDED_VCL_INC_IMPFONTCHARMAP_HXX
 
diff --git a/vcl/inc/sft.hxx b/vcl/inc/sft.hxx
index 3d676aa371e8..3dc6cb77b21f 100644
--- a/vcl/inc/sft.hxx
+++ b/vcl/inc/sft.hxx
@@ -247,7 +247,7 @@ namespace vcl
     int VCL_DLLPUBLIC OpenTTFontFile(const char *fname, sal_uInt32 facenum, TrueTypeFont** ttf);
 #endif
 
-    bool getTTCoverage(
+    bool VCL_DLLPUBLIC getTTCoverage(
         boost::optional<std::bitset<UnicodeCoverage::MAX_UC_ENUM>> & rUnicodeCoverage,
         boost::optional<std::bitset<CodePageCoverage::MAX_CP_ENUM>> & rCodePageCoverage,
         const unsigned char* pTable, size_t nLength);
diff --git a/vcl/unx/kf5/Kf5FontFace.cxx b/vcl/unx/kf5/Kf5FontFace.cxx
new file mode 100644
index 000000000000..2bfa45cc2348
--- /dev/null
+++ b/vcl/unx/kf5/Kf5FontFace.cxx
@@ -0,0 +1,126 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "Kf5FontFace.hxx"
+#include "Kf5Tools.hxx"
+
+#include <sft.hxx>
+#include <impfontcharmap.hxx>
+#include <fontinstance.hxx>
+#include <fontselect.hxx>
+#include <PhysicalFontCollection.hxx>
+
+#include <QtGui/QFont>
+#include <QtGui/QRawFont>
+
+using namespace vcl;
+
+Kf5FontFace::Kf5FontFace( const Kf5FontFace& rSrc )
+  : PhysicalFontFace( rSrc )
+  , m_aFontId( rSrc.m_aFontId )
+{
+    if( rSrc.m_xCharMap.is() )
+        m_xCharMap = rSrc.m_xCharMap;
+}
+
+Kf5FontFace* Kf5FontFace::fromQFont( const QFont &rFont )
+{
+    FontAttributes aFA;
+    aFA.SetFamilyName( toOUString( rFont.family() ) );
+    aFA.SetStyleName( toOUString( rFont.styleName() ) );
+    aFA.SetItalic( rFont.italic() ? ITALIC_NORMAL : ITALIC_NONE );
+
+    return new Kf5FontFace( aFA, rFont.toString() ) ;
+}
+
+Kf5FontFace::Kf5FontFace( const FontAttributes& rFA, const QString &rFontID )
+    : PhysicalFontFace( rFA )
+    , m_aFontId( rFontID )
+    , m_bFontCapabilitiesRead( false )
+{
+}
+
+Kf5FontFace::~Kf5FontFace()
+{
+}
+
+sal_IntPtr Kf5FontFace::GetFontId() const
+{
+    return reinterpret_cast<sal_IntPtr>( &m_aFontId );
+}
+
+const FontCharMapRef Kf5FontFace::GetFontCharMap()
+{
+    if( m_xCharMap.is() )
+        return m_xCharMap;
+
+    QFont aFont;
+    aFont.fromString( m_aFontId );
+    QRawFont aRawFont( QRawFont::fromFont( aFont ) );
+    QByteArray aCMapTable = aRawFont.fontTable( "cmap" );
+    if ( aCMapTable.isEmpty() )
+    {
+        m_xCharMap = new FontCharMap();
+        return m_xCharMap;
+    }
+
+    CmapResult aCmapResult;
+    if( ParseCMAP( reinterpret_cast<const unsigned char*>( aCMapTable.data() ),
+                   aCMapTable.size(), aCmapResult ) )
+        m_xCharMap = new FontCharMap( aCmapResult );
+
+    return m_xCharMap;
+}
+
+bool Kf5FontFace::GetFontCapabilities(vcl::FontCapabilities &rFontCapabilities)
+{
+    // read this only once per font
+    if( m_bFontCapabilitiesRead )
+    {
+        rFontCapabilities = m_aFontCapabilities;
+        return rFontCapabilities.oUnicodeRange || rFontCapabilities.oCodePageRange;
+    }
+    m_bFontCapabilitiesRead = true;
+
+    QFont aFont;
+    aFont.fromString( m_aFontId );
+    QRawFont aRawFont( QRawFont::fromFont( aFont ) );
+    QByteArray aOS2Table = aRawFont.fontTable( "OS/2" );
+    if ( !aOS2Table.isEmpty() )
+    {
+        vcl::getTTCoverage( m_aFontCapabilities.oUnicodeRange,
+                            m_aFontCapabilities.oCodePageRange,
+                            reinterpret_cast<const unsigned char*>( aOS2Table.data() ),
+                            aOS2Table.size() );
+    }
+
+    rFontCapabilities = m_aFontCapabilities;
+    return rFontCapabilities.oUnicodeRange || rFontCapabilities.oCodePageRange;
+}
+
+PhysicalFontFace* Kf5FontFace::Clone() const
+{
+    return new Kf5FontFace( *this );
+}
+
+LogicalFontInstance* Kf5FontFace::CreateFontInstance( const FontSelectPattern& rFSD ) const
+{
+    return new LogicalFontInstance( rFSD );
+}
+
diff --git a/vcl/unx/kf5/Kf5FontFace.hxx b/vcl/unx/kf5/Kf5FontFace.hxx
new file mode 100644
index 000000000000..d2ae8099f345
--- /dev/null
+++ b/vcl/unx/kf5/Kf5FontFace.hxx
@@ -0,0 +1,62 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <PhysicalFontFace.hxx>
+
+#include <tools/ref.hxx>
+#include <vcl/fontcapabilities.hxx>
+#include <vcl/fontcharmap.hxx>
+
+#include <QtCore/QString>
+
+class FontAttributes;
+class FontSelectPattern;
+class QFont;
+
+class Kf5FontFace : public PhysicalFontFace
+{
+public:
+    virtual                  ~Kf5FontFace() override;
+
+    static Kf5FontFace*      fromQFont( const QFont &rFont );
+
+    PhysicalFontFace*        Clone() const override;
+    LogicalFontInstance*     CreateFontInstance( const FontSelectPattern& ) const override;
+    sal_IntPtr               GetFontId() const override;
+
+    int                      GetFontTable( const char pTagName[5], unsigned char* ) const;
+
+    const FontCharMapRef     GetFontCharMap();
+    bool                     GetFontCapabilities( vcl::FontCapabilities &rFontCapabilities );
+    bool                     HasChar( sal_uInt32 cChar ) const;
+
+protected:
+                             Kf5FontFace( const Kf5FontFace& );
+                             Kf5FontFace( const FontAttributes& rFA, const QString &rFontID );
+
+private:
+    const QString            m_aFontId;
+    FontCharMapRef           m_xCharMap;
+    vcl::FontCapabilities    m_aFontCapabilities;
+    bool                     m_bFontCapabilitiesRead;
+};
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/unx/kf5/Kf5Graphics.cxx b/vcl/unx/kf5/Kf5Graphics.cxx
index f1627c2a1be1..b68cb3728287 100644
--- a/vcl/unx/kf5/Kf5Graphics.cxx
+++ b/vcl/unx/kf5/Kf5Graphics.cxx
@@ -25,12 +25,14 @@
 Kf5Graphics::Kf5Graphics( Kf5Frame *pFrame )
     : m_pFrame( pFrame )
     , m_pQImage( nullptr )
+    , m_pFontCollection( nullptr )
 {
 }
 
 Kf5Graphics::Kf5Graphics( QImage *pQImage )
     : m_pFrame( nullptr )
     , m_pQImage( pQImage )
+    , m_pFontCollection( nullptr )
 {
 }
 
diff --git a/vcl/unx/kf5/Kf5Graphics.hxx b/vcl/unx/kf5/Kf5Graphics.hxx
index ff188a890fc1..141f8bdc61e1 100644
--- a/vcl/unx/kf5/Kf5Graphics.hxx
+++ b/vcl/unx/kf5/Kf5Graphics.hxx
@@ -21,13 +21,19 @@
 
 #include <salgdi.hxx>
 
+#include <memory>
+
 class Kf5Frame;
+class PhysicalFontCollection;
+class PhysicalFontFace;
 class QImage;
 
 class Kf5Graphics : public SalGraphics
 {
-    Kf5Frame               *m_pFrame;
-    QImage                 *m_pQImage;
+    Kf5Frame                     *m_pFrame;
+    QImage                       *m_pQImage;
+    PhysicalFontCollection       *m_pFontCollection;
+    PhysicalFontFace             *m_pFont;
 
 public:
     Kf5Graphics( Kf5Frame *pFrame );
diff --git a/vcl/unx/kf5/Kf5Graphics_GDI.cxx b/vcl/unx/kf5/Kf5Graphics_GDI.cxx
index 7e4f6b0da183..12863565364c 100644
--- a/vcl/unx/kf5/Kf5Graphics_GDI.cxx
+++ b/vcl/unx/kf5/Kf5Graphics_GDI.cxx
@@ -19,7 +19,7 @@
 
 #include "Kf5Graphics.hxx"
 
-bool Kf5Graphics::setClipRegion( const vcl::Region& )
+bool Kf5Graphics::setClipRegion( const vcl::Region& rRegion )
 {
     return false;
 }
@@ -77,13 +77,12 @@ bool Kf5Graphics::drawPolyPolygonBezier( sal_uInt32 nPoly, const sal_uInt32* pPo
     return false;
 }
 
-bool Kf5Graphics::drawPolyLine(
-                                const basegfx::B2DPolygon&,
+bool Kf5Graphics::drawPolyLine( const basegfx::B2DPolygon&,
                                 double fTransparency,
                                 const basegfx::B2DVector& rLineWidths,
                                 basegfx::B2DLineJoin,
                                 css::drawing::LineCap eLineCap,
-                                double fMiterMinimumAngle)
+                                double fMiterMinimumAngle )
 {
     return false;
 }
@@ -125,7 +124,7 @@ SalBitmap* Kf5Graphics::getBitmap( long nX, long nY, long nWidth, long nHeight )
 
 SalColor Kf5Graphics::getPixel( long nX, long nY )
 {
-    return SalColor();
+    return 0;
 }
 
 void Kf5Graphics::invert( long nX, long nY, long nWidth, long nHeight, SalInvert nFlags)
diff --git a/vcl/unx/kf5/Kf5Graphics_Text.cxx b/vcl/unx/kf5/Kf5Graphics_Text.cxx
index 23eacc5ffda8..28af6be1bf65 100644
--- a/vcl/unx/kf5/Kf5Graphics_Text.cxx
+++ b/vcl/unx/kf5/Kf5Graphics_Text.cxx
@@ -18,9 +18,15 @@
  */
 
 #include "Kf5Graphics.hxx"
+#include "Kf5FontFace.hxx"
 
 #include <vcl/fontcharmap.hxx>
 
+#include <PhysicalFontCollection.hxx>
+
+#include <QtGui/QFontDatabase>
+#include <QtCore/QStringList>
+
 void Kf5Graphics::SetTextColor( SalColor nSalColor )
 {
 }
@@ -29,7 +35,7 @@ void Kf5Graphics::SetFont( const FontSelectPattern*, int nFallbackLevel )
 {
 }
 
-void Kf5Graphics::GetFontMetric( ImplFontMetricDataRef&, int nFallbackLevel )
+void Kf5Graphics::GetFontMetric( ImplFontMetricDataRef &rFMD, int nFallbackLevel )
 {
 }
 
@@ -43,8 +49,20 @@ bool Kf5Graphics::GetFontCapabilities(vcl::FontCapabilities &rFontCapabilities)
     return false;
 }
 
-void Kf5Graphics::GetDevFontList( PhysicalFontCollection* )
+void Kf5Graphics::GetDevFontList( PhysicalFontCollection* pPFC )
 {
+    m_pFontCollection = pPFC;
+    if ( pPFC->Count() )
+        return;
+
+    QFontDatabase aFDB;
+    for ( auto& family : aFDB.families() )
+        for ( auto& style : aFDB.styles( family ) )
+        {
+            // Just get any size - we don't care
+            QList<int> sizes = aFDB.smoothSizes(family, style);
+            pPFC->Add( Kf5FontFace::fromQFont( aFDB.font( family, style, *sizes.begin() ) ) );
+        }
 }
 
 void Kf5Graphics::ClearDevFontCache()
diff --git a/vcl/unx/kf5/Kf5Tools.hxx b/vcl/unx/kf5/Kf5Tools.hxx
new file mode 100644
index 000000000000..d5ba80bc0898
--- /dev/null
+++ b/vcl/unx/kf5/Kf5Tools.hxx
@@ -0,0 +1,38 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <QtCore/QString>
+
+#include <rtl/string.hxx>
+
+inline OUString toOUString(const QString& s)
+{
+    // QString stores UTF16, just like OUString
+    return OUString(reinterpret_cast<const sal_Unicode*>(s.data()), s.length());
+}
+
+inline QString toQString(const OUString& s)
+{
+    return QString::fromUtf16(
+        reinterpret_cast<ushort const *>(s.getStr()), s.getLength());
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/unx/kf5/Kf5VirtualDevice.cxx b/vcl/unx/kf5/Kf5VirtualDevice.cxx
index 866a49ba28d1..9c0e4864a55c 100644
--- a/vcl/unx/kf5/Kf5VirtualDevice.cxx
+++ b/vcl/unx/kf5/Kf5VirtualDevice.cxx
@@ -19,6 +19,10 @@
 
 #include "Kf5VirtualDevice.hxx"
 
+#include "Kf5Graphics.hxx"
+
+#include <QtGui/QImage>
+
 Kf5VirtualDevice::Kf5VirtualDevice( DeviceFormat eFormat, double fScale )
 {
 }
@@ -29,32 +33,69 @@ Kf5VirtualDevice::~Kf5VirtualDevice()
 
 SalGraphics* Kf5VirtualDevice::AcquireGraphics()
 {
-    return nullptr;
+    assert( m_pImage );
+    Kf5Graphics* pGraphics = new Kf5Graphics( m_pImage.get() );
+    m_aGraphics.push_back( pGraphics );
+    return pGraphics;
 }
 
 void Kf5VirtualDevice::ReleaseGraphics( SalGraphics* pGraphics )
 {
+    m_aGraphics.remove( dynamic_cast<Kf5Graphics*>( pGraphics ) );
+    delete pGraphics;
 }
 
 bool Kf5VirtualDevice::SetSize( long nNewDX, long nNewDY )
 {
-    return false;
+    return SetSizeUsingBuffer( nNewDX, nNewDY, nullptr );
 }
 
 bool Kf5VirtualDevice::SetSizeUsingBuffer( long nNewDX, long nNewDY,
                                            sal_uInt8 * pBuffer )
 {
-    return false;
+    if( nNewDX == 0 )
+        nNewDX = 1;
+    if( nNewDY == 0 )
+        nNewDY = 1;
+
+    if( m_pImage && m_aFrameSize.getX() != nNewDX
+                  && m_aFrameSize.getY() != nNewDY )
+        return true;
+
+    m_aFrameSize = basegfx::B2IVector( nNewDX, nNewDY );
+
+    nNewDX *= m_fScale;
+    nNewDY *= m_fScale;
+
+    if (m_eFormat == DeviceFormat::BITMASK)
+    {
+        m_pImage.reset( new QImage( nNewDX, nNewDY, QImage::Format_Mono ) );
+    }
+    else
+    {
+        if ( pBuffer )
+            m_pImage.reset( new QImage( pBuffer, nNewDX, nNewDY, QImage::Format_ARGB32 ) );
+        else
+            m_pImage.reset( new QImage( nNewDX, nNewDY, QImage::Format_ARGB32 ) );
+    }
+
+    m_pImage->setDevicePixelRatio( m_fScale );
+
+    // update device in existing graphics
+    for( auto pKf5Graph : m_aGraphics )
+        pKf5Graph->ChangeQImage( m_pImage.get() );
+
+    return true;
 }
 
 long Kf5VirtualDevice::GetWidth() const
 {
-    return 0;
+    return m_pImage ? m_aFrameSize.getX() : 0;
 }
 
 long Kf5VirtualDevice::GetHeight() const
 {
-    return 0;
+    return m_pImage ? m_aFrameSize.getY() : 0;
 }
 
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/unx/kf5/Kf5VirtualDevice.hxx b/vcl/unx/kf5/Kf5VirtualDevice.hxx
index 9bffaa12861b..7b50a6e7d2dc 100644
--- a/vcl/unx/kf5/Kf5VirtualDevice.hxx
+++ b/vcl/unx/kf5/Kf5VirtualDevice.hxx
@@ -20,18 +20,22 @@
 #pragma once
 
 #include <salvd.hxx>
-
 #include <basegfx/vector/b2ivector.hxx>
 
+#include <memory>
 #include <list>
 
 class Kf5Graphics;
+class QImage;
 enum class DeviceFormat;
 
 class Kf5VirtualDevice : public SalVirtualDevice
 {
-    basegfx::B2IVector            m_aFrameSize;
     std::list< Kf5Graphics* >     m_aGraphics;
+    std::unique_ptr< QImage >     m_pImage;
+    DeviceFormat                  m_eFormat;
+    basegfx::B2IVector            m_aFrameSize;
+    double                        m_fScale;
 
 public:
     Kf5VirtualDevice( DeviceFormat eFormat, double fScale );