iOS tiled rendering work

Possibly quite broken intermediate commit. But anyway, now it is
possible to render the tile diretly to a CGContext. Can be seen in
the MobileLibreOffice app when build in the Debug_tile_tester
configuration. See touch_lo_draw_tile() in viewsh.cxx. Unfortunately
the old plain LibreOffice test app is now broken, though, and
displays nothing at all.

This refactoring and hacking in vcl was done in a quite ugly fashion,
with ifdefs etc. But trust me, I did try, several times, for many
days, to get where I wanted in an elegant and clean fashion. But doing
it cleanly meant not being able to actually build it for days while
trying to figure ut which bits go where and which class should be
split into what base and derived class(es), and it was too much for my
limited brain capacity. I just couldn't juggle all the vcl class
structure in my head, especially as I don't have any good
understanding of the general design of it all.

Change-Id: Ia59d6a9cce15a63e63f94e8d8574bef21993fb1f

2 files changed, 34 insertions, 2 deletions

diff --git a/vcl/headless/svpgdi.cxx b/vcl/headless/svpgdi.cxx
index 2a1035fab25a..0917f9e9826b 100644
--- a/vcl/headless/svpgdi.cxx
+++ b/vcl/headless/svpgdi.cxx
@@ -286,6 +286,10 @@ bool SvpSalGraphics::isClippedSetup( const basegfx::B2IBox &aRange, SvpSalGraphi
 // bitmapdevice instead.
 bool SvpSalGraphics::setClipRegion( const Region& i_rClip )
 {
+#ifdef IOS
+    if (mbForeignContext)
+        return true;
+#endif
     m_aClipRegion = i_rClip;
     m_aClipMap.reset();
     if( i_rClip.IsEmpty() )
@@ -314,6 +318,8 @@ bool SvpSalGraphics::setClipRegion( const Region& i_rClip )
     return true;
 }
 
+#ifndef IOS
+
 void SvpSalGraphics::SetLineColor()
 {
     m_bUseLineColor = false;
@@ -677,6 +683,8 @@ SalBitmap* SvpSalGraphics::getBitmap( long nX, long nY, long nWidth, long nHeigh
     return pBitmap;
 }
 
+#endif
+
 SalColor SvpSalGraphics::getPixel( long nX, long nY )
 {
     basebmp::Color aColor( m_aOrigDevice->getPixel( basegfx::B2IPoint( nX, nY ) ) );
diff --git a/vcl/headless/svpinst.cxx b/vcl/headless/svpinst.cxx
index 340f4f4601a1..7a43eb1f326c 100644
--- a/vcl/headless/svpinst.cxx
+++ b/vcl/headless/svpinst.cxx
@@ -30,6 +30,12 @@
 #include "headless/svpframe.hxx"
 #include "headless/svpdummies.hxx"
 #include "headless/svpvd.hxx"
+#ifdef IOS
+#include "headless/svpgdi.hxx"
+#include "quartz/salbmp.h"
+#include "quartz/salgdi.h"
+#include "quartz/salvd.h"
+#endif
 #include "headless/svpbmp.hxx"
 
 #include <salframe.hxx>
@@ -211,13 +217,27 @@ void SvpSalInstance::DestroyObject( SalObject* pObject )
     delete pObject;
 }
 
-SalVirtualDevice* SvpSalInstance::CreateVirtualDevice( SalGraphics*,
+SalVirtualDevice* SvpSalInstance::CreateVirtualDevice( SalGraphics* pGraphics,
                                                        long nDX, long nDY,
-                                                       sal_uInt16 nBitCount, const SystemGraphicsData* )
+                                                       sal_uInt16 nBitCount,
+                                                       const SystemGraphicsData* pData )
 {
+#ifdef IOS
+    if( pData )
+        return new AquaSalVirtualDevice( static_cast< AquaSalGraphics* >( pGraphics ), nDX, nDY, nBitCount, pData );
+    else
+    {
+        SvpSalVirtualDevice* pNew = new SvpSalVirtualDevice( nBitCount );
+        pNew->SetSize( nDX, nDY );
+        return pNew;
+    }
+#else
+    (void) pGraphics;
+    (void) pData;
     SvpSalVirtualDevice* pNew = new SvpSalVirtualDevice( nBitCount );
     pNew->SetSize( nDX, nDY );
     return pNew;
+#endif
 }
 
 void SvpSalInstance::DestroyVirtualDevice( SalVirtualDevice* pDevice )
@@ -242,7 +262,11 @@ SalSystem* SvpSalInstance::CreateSalSystem()
 
 SalBitmap* SvpSalInstance::CreateSalBitmap()
 {
+#ifdef IOS
+    return new QuartzSalBitmap();
+#else
     return new SvpSalBitmap();
+#endif
 }
 
 void SvpSalInstance::Yield( bool bWait, bool bHandleAllCurrentEvents )