bubble the original gtk surface type through rendering

this may make scrolling a tad faster

Change-Id: I0c2cc9df85932e25dbfed88727d3b83d299671c7

3 files changed, 7 insertions, 1 deletions

diff --git a/vcl/inc/headless/svpgdi.hxx b/vcl/inc/headless/svpgdi.hxx
index 808347401d2c..5673706b7eb6 100644
--- a/vcl/inc/headless/svpgdi.hxx
+++ b/vcl/inc/headless/svpgdi.hxx
@@ -80,6 +80,7 @@ struct VCL_DLLPUBLIC DamageHandler
 class VCL_DLLPUBLIC SvpSalGraphics : public SalGraphics
 {
     cairo_surface_t*               m_pSurface;
+    basegfx::B2IVector             m_aFrameSize;
     double                         m_fScale;
     SalColor                       m_aLineColor;
     SalColor                       m_aFillColor;
@@ -87,7 +88,7 @@ class VCL_DLLPUBLIC SvpSalGraphics : public SalGraphics
 
 public:
     static GlyphCache& getPlatformGlyphCache();
-    void setSurface(cairo_surface_t* pSurface);
+    void setSurface(cairo_surface_t* pSurface, const basegfx::B2IVector& rSize);
     static cairo_user_data_key_t* getDamageKey();
 
 private:
@@ -115,6 +116,8 @@ protected:
         const SalBitmap* pAlphaBitmap) override;
     virtual bool drawAlphaRect( long nX, long nY, long nWidth, long nHeight, sal_uInt8 nTransparency ) override;
 
+    cairo_t* createTmpCompatibleCairoContext() const;
+
 public:
     SvpSalGraphics();
     virtual ~SvpSalGraphics() override;
diff --git a/vcl/inc/headless/svpvd.hxx b/vcl/inc/headless/svpvd.hxx
index 882f36d6fc37..7ac156305abd 100644
--- a/vcl/inc/headless/svpvd.hxx
+++ b/vcl/inc/headless/svpvd.hxx
@@ -31,6 +31,7 @@ class VCL_DLLPUBLIC SvpSalVirtualDevice : public SalVirtualDevice
 {
     DeviceFormat                        m_eFormat;
     cairo_surface_t*                    m_pSurface;
+    basegfx::B2IVector                  m_aFrameSize;
     double                              m_fScale;
     std::list< SvpSalGraphics* >        m_aGraphics;
 
diff --git a/vcl/inc/unx/gtk/gtkframe.hxx b/vcl/inc/unx/gtk/gtkframe.hxx
index a0c86b3cb085..51977c25acbe 100644
--- a/vcl/inc/unx/gtk/gtkframe.hxx
+++ b/vcl/inc/unx/gtk/gtkframe.hxx
@@ -246,6 +246,7 @@ class GtkSalFrame : public SalFrame
 #endif
 #if GTK_CHECK_VERSION(3,0,0)
     static gboolean     signalDraw( GtkWidget*, cairo_t *cr, gpointer );
+    static void         signalRealize(GtkWidget*, gpointer frame);
     static void         sizeAllocated(GtkWidget*, GdkRectangle *pAllocation, gpointer frame);
     static gboolean     signalTooltipQuery(GtkWidget*, gint x, gint y,
                                      gboolean keyboard_mode, GtkTooltip *tooltip,
@@ -346,6 +347,7 @@ class GtkSalFrame : public SalFrame
 public:
 #if GTK_CHECK_VERSION(3,0,0)
     cairo_surface_t*                m_pSurface;
+    basegfx::B2IVector              m_aFrameSize;
     DamageHandler                   m_aDamageHandler;
     int                             m_nGrabLevel;
     bool                            m_bSalObjectSetPosSize;