X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=Usermode%2FApplications%2Faxwin4_src%2FServer%2FCSurface.cpp;h=07d8bfb607395b6c616f4355746717e34578e493;hb=4d0188930e7d0e571db78d1d2e3c4d9b3f0fe8fb;hp=a7206b67e1b628fbbc1a4bc055a84b5c8f40bd5d;hpb=b471bc9adca2cf2126c2b579bf0b33cedd2839a4;p=tpg%2Facess2.git

diff --git a/Usermode/Applications/axwin4_src/Server/CSurface.cpp b/Usermode/Applications/axwin4_src/Server/CSurface.cpp
index a7206b67..07d8bfb6 100644
--- a/Usermode/Applications/axwin4_src/Server/CSurface.cpp
+++ b/Usermode/Applications/axwin4_src/Server/CSurface.cpp
@@ -6,21 +6,82 @@
  * - Window
  */
 #include <CSurface.hpp>
+#include <cassert>
+#include <stdexcept>
+#include <cstring>
+#include <system_error>
+#include <cerrno>
 
 namespace AxWin {
 
-CSurface::CSurface(unsigned int x, unsigned int y, unsigned int w, unsigned int h):
-	m_rect(x,y, w,h)
+CSurface::CSurface(int x, int y, unsigned int w, unsigned int h):
+	m_rect(x,y, w,h),
+	m_fd(-1),
+	m_data(0)
 {
+	if( w > 0 && h > 0 )
+	{
+		m_data = new uint32_t[w * h];
+	}
 }
 
 CSurface::~CSurface()
 {
 }
 
+uint64_t CSurface::GetSHMHandle()
+{
+	// 1. Free local buffer
+	delete m_data;
+	// 2. Allocate a copy in SHM
+	m_fd = _SysOpen("/Devices/shm/anon", OPENFLAG_WRITE|OPENFLAG_READ);
+	if(m_fd==-1)	throw ::std::system_error(errno, ::std::system_category());
+	size_t	size = m_rect.m_w*m_rect.m_h*4;
+	_SysTruncate(m_fd, size);
+	// 3. mmap shm copy
+	m_data = static_cast<uint32_t*>( _SysMMap(nullptr, size, MMAP_PROT_WRITE, 0, m_fd, 0) );
+	if(!m_data)	throw ::std::system_error(errno, ::std::system_category());
+	return _SysMarshalFD(m_fd);
+}
+
+void CSurface::Resize(unsigned int W, unsigned int H)
+{
+	if( m_fd == -1 )
+	{
+		// Easy realloc
+		// TODO: Should I maintain window contents sanely? NOPE!
+		delete m_data;
+		m_data = new uint32_t[W * H];
+	}
+	else
+	{
+		//_SysIOCtl(m_fd, SHM_IOCTL_SETSIZE, W*H*4);
+	}
+	m_rect.Resize(W, H);
+}
+
+void CSurface::DrawScanline(unsigned int row, unsigned int x_ofs, unsigned int w, const void* data)
+{
+	if( row >= m_rect.m_h )
+		throw ::std::out_of_range("CSurface::DrawScanline row");
+	if( x_ofs >= m_rect.m_w )
+		throw ::std::out_of_range("CSurface::DrawScanline x_ofs");
+
+	if( w > m_rect.m_w )
+		throw ::std::out_of_range("CSurface::DrawScanline width");
+	
+	size_t	ofs = row*m_rect.m_w + x_ofs;
+	::memcpy( &m_data[ofs], data, w*4 );
+}
+
 const uint32_t* CSurface::GetScanline(unsigned int row, unsigned int x_ofs) const
 {
-	return 0;
+	if( row >= m_rect.m_h )
+		throw ::std::out_of_range("CSurface::GetScanline row");
+	if( x_ofs >= m_rect.m_w )
+		throw ::std::out_of_range("CSurface::GetScanline x_ofs");
+
+	return &m_data[row * m_rect.m_w + x_ofs];
 }