void PrintDeviceContext(GDIContext dc)
{
DeviceTechnology tech = dc.TypeOfDevice;
GDIRasterCapabilities rastercaps = dc.RasterCapabilities;
GDITextCapabilities textcaps = dc.TextCapabilities;
}
public static void Draw(GDIContext dc, ControlRenderingStyle renderStyle, Rectangle rect)
{
RECT aRect = new RECT(rect.X, rect.Y, rect.Width, rect.Height);
User32.DrawFrameControl(dc,
ref aRect,
(int)renderStyle.ControlCategory,
renderStyle.ControlType | (int)renderStyle.StateModifiers);
}
public Form1()
{
InitializeComponent();
// Get the right device context
fDeviceContext = GDIContext.CreateForWindowClientArea(this.Handle); // This is fairly fast for the window
//fDeviceContext = GDIContext.CreateForDesktopBackground(); // This one is the desktop background and is fast
//fDeviceContext = GDIContext.CreateForDefaultDisplay(); // This one is way slow on Vista
fChannel = new GDIRenderer(fDeviceContext);
fDemoCounter = 0;
//this.Text = "PixTour";
bezierer = new BezierTest(ClientRectangle.Size);
aTextTest = new TextTest(ClientRectangle.Size);
PrintDeviceContext(fDeviceContext);
}
GraphPortChunkEncoder fCommandDispatcher; // Used to do PixBlt to the net
#endregion
public DesktopCapture(ConferenceAttendee attendee)
{
fAttendee = attendee;
fContext = GDIContext.CreateForDefaultDisplay();
//fCommandDispatcher = new GraphPortChunkEncoder(attendee);
int width = 800;
int height = 600;
fResolution = new Resolution(width, height);
fScreenImage = new GDIDIBSection(width, height);
fGrayImage = new PixelArray<Lumb>(width, height, fScreenImage.Orientation, new Lumb());
// Start the thread that will take snapshots of the screen
fGlobalTimer = new PrecisionTimer();
fFrameRate = 10; // Frames per second
fSnapperRunning = true;
fSnapperThread = new Thread(RunSnaps);
// WAA
//fSnapperThread.Start();
}
public static uint SelectFont(GDIContext hdc, System.Drawing.Font font)
{
GDI32.SelectObject(hdc, font.ToHfont());
uint size = GDI32.GetOutlineTextMetrics(hdc, 0, IntPtr.Zero);
if (size != uint.MaxValue)
{
UnmanagedMemory otm = new UnmanagedMemory((int)size);
uint err = GDI32.GetOutlineTextMetrics(hdc, size, otm.MemoryPointer);
uint otmEMSquare = (uint)Marshal.ReadInt32(otm, 92);
otm.Dispose();
LOGFONT log = new LOGFONT();
font.ToLogFont(log);
log.lfHeight = -(int)otmEMSquare;
font = System.Drawing.Font.FromLogFont(log);
GDI32.SelectObject(hdc, font.ToHfont());
}
return size;
}
public static bool IsTrueType(GDIContext hdc, System.Drawing.Font font)
{
GDI32.SelectObject(hdc, font.ToHfont());
UnmanagedMemory tmPtr = new UnmanagedMemory(Marshal.SizeOf(typeof(TEXTMETRIC)));
uint err = GDI32.GetTextMetrics(hdc, tmPtr.MemoryPointer);
TEXTMETRIC tm = (TEXTMETRIC)Marshal.PtrToStructure(tmPtr.MemoryPointer, typeof(TEXTMETRIC));
tmPtr.Dispose();
return (tm.tmPitchAndFamily & 4) != 0;
}
public static ushort GetGlyph(GDIContext hdc, uint uchar, out float2[] pnts, out sbyte[] onCurve, out short advanceWidth)
{
MAT2 mat = new MAT2();
IntPtr matPtr = Marshal.AllocCoTaskMem(Marshal.SizeOf(typeof(MAT2)));
Marshal.StructureToPtr(mat, matPtr, true);
IntPtr gmPtr = Marshal.AllocCoTaskMem(Marshal.SizeOf(typeof(GLYPHMETRICS)));
int sz = GDI32.GetGlyphOutline(hdc, uchar, GDI32.GGO_NATIVE, gmPtr, 0, IntPtr.Zero, matPtr);
GLYPHMETRICS gm = (GLYPHMETRICS)Marshal.PtrToStructure(gmPtr, typeof(GLYPHMETRICS));
advanceWidth = gm.gmCellIncX;
IntPtr gbufPtr = Marshal.AllocCoTaskMem(sz);
int err0 = GDI32.GetGlyphOutline(hdc, uchar, GDI32.GGO_NATIVE, gmPtr, sz, gbufPtr, matPtr);
return GetOutline(new UnmanagedPointer(gbufPtr), sz, out pnts, out onCurve);
}
