/// <summary>
/// Create a Mode from a windows DEVMODE structure
/// </summary>
/// <param name="d">windows DEVMODE structure</param>
/// <returns>new graphics mode in a graphicsMode structure</returns>
public static graphicsMode fromDevMode(DEVMODE d)
{
graphicsMode g = new graphicsMode();
g.bitsPerPixel = d.dmBitsPerPel;
g.dimensions = new Size(d.dmPelsWidth, d.dmPelsHeight);
g.refreshRate = d.dmDisplayFrequency;
return(g);
}
/// <summary>
/// Create a Mode from a set of paramaters
/// </summary>
///<param name="dimensions">Size of the matrix of pixels.</param>
/// <param name="bitsPerPixel">pixel depth</param>
/// <param name="refreshRate">scan rate</param>
/// <returns>new graphics mode in a graphicsMode structure</returns>
public static graphicsMode fromSpecs(Size dimensions, int bitsPerPixel, int refreshRate)
{
graphicsMode g = new graphicsMode();
g.bitsPerPixel = bitsPerPixel;
g.refreshRate = refreshRate;
g.dimensions = dimensions;
return(g);
}
/// <summary>
/// Changes the screen mode of the specified device
/// </summary>
/// <param name="g">The graphics mode</param>
/// <param name="displayCompatableOnly">Include modes the video card can produce, but the monitor can't use.</param>
/// <param name="changeType">Nature of change to perform</param>
/// <returns>ChangeDisplaySettingsReturnValue as per winsdk</returns>
public ChangeDisplaySettingsReturnValue changeResolution(graphicsMode g, bool displayCompatableOnly, displayChangeType changeType)
{
int index = getIndexOfMode(g, displayCompatableOnly);
if (index != -1)
{
return(changeResolution(index, displayCompatableOnly, changeType));
}
else
{
return(ChangeDisplaySettingsReturnValue.DISP_CHANGE_BADMODE);
}
}
/// <summary>
/// Gets the index of the specified resolution if available
/// </summary>
/// <param name="g">The graphics mode</param>
/// <param name="displayCompatableOnly">Include modes the video card can produce, but the monitor can't use.</param>
/// <returns>Returns -1 if mode is not supported</returns>
public int getIndexOfMode(graphicsMode g, bool displayCompatableOnly)
{
int i;
graphicsMode[] modes = enumerateModes(displayCompatableOnly);
for (i = 0; i < modes.Length; i++)
{
if (g.compare(modes[i]) == 0)
{
return(i);
}
}
return(-1);
}
/// <summary>
/// Get all available graphics modes
/// </summary>
/// <param name="displayCompatableOnly">Use all modes that the adapter can produce (but the attached display might not support)</param>
/// <returns>An array of available graphics modes</returns>
protected graphicsMode[] enumerateModes(bool displayCompatableOnly)
{
int i = 0;
DEVMODE devmode = initNewDEVMODE();
ArrayList modes = new ArrayList();
while (EnumDisplaySettingsEx(this.DeviceName, i, ref devmode, displayCompatableOnly ? 0 : EDS_RAWMODE))
{
i++;
modes.Add(graphicsMode.fromDevMode(devmode));
}
graphicsMode[] finalModes = new graphicsMode[modes.Count];
for (i = 0; i < finalModes.Length; i++)
{
finalModes[i] = (graphicsMode)modes[i];
}
return(finalModes);
}
/// <summary>
/// Compares to graphics modes
/// </summary>
/// <returns>-1 if other is less than, 1 if greater than, 0 if equal </returns>
public int compare(graphicsMode other)
{
int c;
c = compare(refreshRate, other.refreshRate);
if (c != 0)
{
return(c);
}
c = compare(dimensions.Height, other.dimensions.Height);
if (c != 0)
{
return(c);
}
c = compare(dimensions.Width, other.dimensions.Width);
if (c != 0)
{
return(c);
}
c = compare(bitsPerPixel, other.bitsPerPixel);
return(c);
}
/// <summary>
/// Create a Mode from a string
/// </summary>
/// <param name="s">String representing mode</param>
/// <returns>new graphics mode in a graphicsMode structure</returns>
public static graphicsMode fromString(string s)
{
graphicsMode g = new graphicsMode();
try
{
if (s.IndexOfAny(@"\/".ToCharArray()) != -1)
{
//tree based mode specifier
string[] tokens = s.Split(@"\/".ToCharArray());
g.dimensionString = tokens[0];
g.bitsPerPixelString = tokens[1];
g.refreshRateString = tokens[2];
return(g);
}
throw new Exception("TODO: better error handelling");
}
catch
{
//return null;
throw new Exception("TODO: better error handelling");
}
}
/// <summary>
/// Nearest Mode of less than or equal specs
/// </summary>
/// <param name="width">width of display mode</param>
/// <param name="height">height of display mode</param>
/// <param name="useNearest">find nearest is exact nt possible</param>
/// <param name="newSize">The new display size</param>
/// <returns>True if sucsessful, otherwise false.</returns>
public bool changeToMode(int width, int height, bool useNearest, out Size newSize)
{
graphicsMode[] modes = availableModes;
newSize = this.Bounds.Size;
if (modes.Length <= 0)
{
return(false);
}
//are we already in a similar mode
if ((this.Bounds.Size.Width == width) && (this.Bounds.Size.Height == height))
{
return(true);
}
//lets not exceed 75Hz
graphicsMode g = graphicsMode.fromSpecs(width, height, 32, 75);
//changeResolution
int nearest = -1;
int i;
for (i = 0; i < modes.Length; i++)
{
//-1 if other is less than, 1 if greater than, 0 if equal
if (g.compare(modes[i]) <= 0)
{
if (nearest == -1)
{
nearest = i;
}
else
{
if (modes[nearest].compare(modes[i]) > 0)
{
nearest = i;
}
}
}
} //end for
if (nearest == -1)
{
return(false);
}
if (!useNearest)
{
if (modes[nearest].dimensions.Width != width)
{
return(false);
}
if (modes[nearest].dimensions.Height != height)
{
return(false);
}
}
ChangeDisplaySettingsReturnValue r = changeResolution(nearest, true, displayChangeType.noStartMenuOrToolBars);
if (r == ChangeDisplaySettingsReturnValue.DISP_CHANGE_SUCCESSFUL)
{
newSize = modes[nearest].dimensions;
return(true);
}
else
{
return(false);
}
}
