X-Git-Url: https://git.ucc.asn.au/?p=tpg%2Facess2.git;a=blobdiff_plain;f=Usermode%2FApplications%2Faxwin4_src%2FServer%2FCSurface.cpp;fp=Usermode%2FApplications%2Faxwin4_src%2FServer%2FCSurface.cpp;h=d0eddc428ef3101a7abb5bd54746c2808619e7a4;hp=0000000000000000000000000000000000000000;hb=845b6f9d90bb87b5e760e4d49aa93b0e003ab750;hpb=67a7fe2bb79eceaf10c572a99bd8345c4e81cf5b

diff --git a/Usermode/Applications/axwin4_src/Server/CSurface.cpp b/Usermode/Applications/axwin4_src/Server/CSurface.cpp
new file mode 100644
index 00000000..d0eddc42
--- /dev/null
+++ b/Usermode/Applications/axwin4_src/Server/CSurface.cpp
@@ -0,0 +1,143 @@
+/*
+ * Acess2 GUI v4
+ * - By John Hodge (thePowersGang)
+ *
+ * CWindow.cpp
+ * - Window
+ */
+#include <CSurface.hpp>
+#include <cassert>
+#include <stdexcept>
+#include <cstring>
+#include <system_error>
+#include <cerrno>
+#include <CColour.hpp>
+
+namespace AxWin {
+
+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()
+{
+	if( m_fd == -1 ) {
+		delete[] m_data;
+	}
+	else {
+		size_t	size = m_rect.m_w*m_rect.m_h*4;
+		_SysMUnMap(m_data, size);
+	}
+}
+
+uint64_t CSurface::GetSHMHandle()
+{
+	size_t	size = m_rect.m_w*m_rect.m_h*4;
+	if( m_fd == -1 )
+	{
+		// 2. Allocate a copy in SHM
+		m_fd = _SysOpen("/Devices/shm/anon", OPENFLAG_WRITE|OPENFLAG_READ);
+		if(m_fd == -1) {
+			_SysDebug("GetSHMHandle: Unable to open anon SHM");
+			return -1;
+		}
+		// 1. Free local buffer
+		delete m_data;
+		_SysTruncate(m_fd, size);
+	}
+	else
+	{
+		_SysMUnMap(m_data, 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 );
+}
+
+void CSurface::BlendScanline(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");
+	
+	const uint32_t*	in_data = (const uint32_t*)data;
+	size_t	ofs = row*m_rect.m_w + x_ofs;
+	for( unsigned int x = 0; x < w; x ++ )
+	{
+		CColour	out = CColour::from_argb(m_data[ofs+x]).blend( CColour::from_argb(in_data[x]) );
+		m_data[ofs+x] = out.to_argb();
+	}
+}
+
+void CSurface::FillScanline(unsigned int row, unsigned int x_ofs, unsigned int w, uint32_t colour)
+{
+	if( row >= m_rect.m_h )
+		throw ::std::out_of_range("CSurface::FillScanline row");
+	if( x_ofs >= m_rect.m_w )
+		throw ::std::out_of_range("CSurface::FillScanline x_ofs");
+
+	if( w > m_rect.m_w )
+		throw ::std::out_of_range("CSurface::FillScanline width");
+	
+	size_t	ofs = row*m_rect.m_w + x_ofs;
+	while( w -- )
+		m_data[ofs++] = colour;
+}
+
+const uint32_t* CSurface::GetScanline(unsigned int row, unsigned int x_ofs) const
+{
+	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];
+}
+
+
+};	// namespace AxWin
+
+