qt5: hold LogicalFontInstance with rtl::Reference

Build fix after c4c56de1.

Change-Id: I49303528ccbe49894a0fbae3c24d3f3d08c016eb
Reviewed-on: https://gerrit.libreoffice.org/55547Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

vcl/inc/qt5/Qt5FontFace.hxx

@@ -47,7 +47,8 @@ public:
     bool GetFontCapabilities(vcl::FontCapabilities& rFontCapabilities) const;
     bool HasChar(sal_uInt32 cChar) const;
 
-    LogicalFontInstance* CreateFontInstance(const FontSelectPattern& rFSD) const override;
+    rtl::Reference<LogicalFontInstance>
+    CreateFontInstance(const FontSelectPattern& rFSD) const override;
 
 protected:
     Qt5FontFace(const Qt5FontFace&);

vcl/inc/qt5/Qt5Graphics.hxx

@@ -48,7 +48,7 @@ class Qt5Graphics : public SalGraphics
     QPainter::CompositionMode m_eCompositionMode;
 
     PhysicalFontCollection* m_pFontCollection;
-    Qt5Font* m_pTextStyle[MAX_FALLBACK];
+    rtl::Reference<Qt5Font> m_pTextStyle[MAX_FALLBACK];
     Color m_aTextColor;
 
     Qt5Graphics(Qt5Frame* pFrame, QImage* pQImage);

vcl/qt5/Qt5Font.hxx

@@ -27,7 +27,8 @@
 
 class Qt5Font final : public QFont, public LogicalFontInstance
 {
-    friend LogicalFontInstance* Qt5FontFace::CreateFontInstance(const FontSelectPattern&) const;
+    friend rtl::Reference<LogicalFontInstance>
+    Qt5FontFace::CreateFontInstance(const FontSelectPattern&) const;
 
     virtual hb_font_t* ImplInitHbFont() override;
 

vcl/qt5/Qt5FontFace.cxx

@@ -62,7 +62,8 @@ Qt5FontFace::~Qt5FontFace() {}
 
 sal_IntPtr Qt5FontFace::GetFontId() const { return reinterpret_cast<sal_IntPtr>(&m_aFontId); }
 
-LogicalFontInstance* Qt5FontFace::CreateFontInstance(const FontSelectPattern& rFSD) const
+rtl::Reference<LogicalFontInstance>
+Qt5FontFace::CreateFontInstance(const FontSelectPattern& rFSD) const
 {
     return new Qt5Font(*this, rFSD);
 }

vcl/qt5/Qt5Graphics.cxx

@@ -47,7 +47,7 @@ Qt5Graphics::~Qt5Graphics()
     {
         if (!m_pTextStyle[i])
             break;
-        m_pTextStyle[i]->Release();
+        m_pTextStyle[i].clear();
     }
 }
 

vcl/qt5/Qt5Graphics_Text.cxx

@@ -41,8 +41,7 @@ void Qt5Graphics::SetFont(const FontSelectPattern* pReqFont, int nFallbackLevel)
     {
         if (!m_pTextStyle[i])
             break;
-        m_pTextStyle[i]->Release();
-        m_pTextStyle[i] = nullptr;
+        m_pTextStyle[i].clear();
     }
 
     if (!pReqFont)
@@ -51,8 +50,7 @@ void Qt5Graphics::SetFont(const FontSelectPattern* pReqFont, int nFallbackLevel)
     if (!pReqFont->mpFontInstance)
         return;
 
-    m_pTextStyle[nFallbackLevel] = static_cast<Qt5Font*>(pReqFont->mpFontInstance);
-    m_pTextStyle[nFallbackLevel]->Acquire();
+    m_pTextStyle[nFallbackLevel] = static_cast<Qt5Font*>(pReqFont->mpFontInstance.get());
 }
 
 void Qt5Graphics::GetFontMetric(ImplFontMetricDataRef& rFMD, int nFallbackLevel)
@@ -137,7 +135,7 @@ bool Qt5Graphics::GetGlyphBoundRect(const GlyphItem& rGlyph, tools::Rectangle& r
     if (nLevel >= MAX_FALLBACK)
         return false;
 
-    Qt5Font* pFont = m_pTextStyle[nLevel];
+    Qt5Font* pFont = m_pTextStyle[nLevel].get();
     if (!pFont)
         return false;