public static void GradientFill(IntPtr hDC, ref RECT rect, uint colorA, uint colorB, bool vertical)
{
var vertices = new TRIVERTEX[2];
vertices[0].x = rect.Left;
vertices[0].y = rect.Top;
vertices[0].Red = (ushort)((colorA & 0xFF) << 8);
vertices[0].Green = (ushort)(((colorA >> 8) & 0xFF) << 8);
vertices[0].Blue = (ushort)(((colorA >> 16) & 0xFF) << 8);
vertices[1].x = rect.Right;
vertices[1].y = rect.Bottom;
vertices[1].Red = (ushort)((colorB & 0xFF) << 8);
vertices[1].Green = (ushort)(((colorB >> 8) & 0xFF) << 8);
vertices[1].Blue = (ushort)(((colorB >> 16) & 0xFF) << 8);
GRADIENT_RECT r;
r.UpperLeft = 0;
r.LowerRight = 1;
GCHandle pinnedArray = GCHandle.Alloc(vertices, GCHandleType.Pinned);
GradientFill(hDC, pinnedArray.AddrOfPinnedObject(), 2, ref r, 1, vertical ? GRADIENT_FILL_RECT_V : GRADIENT_FILL_RECT_H);
pinnedArray.Free();
}
public static void PictureDrawGradientFillTriangle(ref int dwColour1, ref int dwColour2, ref int dwColour3, ref int dwColour4, PictureBox myFrm)
{
GRADIENT_TRIANGLE[] grTri = new GRADIENT_TRIANGLE[2];
TRIVERTEX[] vert = new TRIVERTEX[4];
//Colour at upper-left corner
TRIVERTEX with_1 = vert[0];
with_1.x = 0;
with_1.Y = 0;
with_1.Red = LongToSignedShort(((short)(dwColour1 & 0xFF)) * 256);
with_1.Green = LongToSignedShort(System.Convert.ToInt32(((dwColour1 & 0xFF00) / 0x100) * 256));
with_1.Blue = LongToSignedShort(System.Convert.ToInt32(((dwColour1 & 0xFF0000) / 0x10000) * 256));
with_1.Alpha = (short)0;
//Colour at upper-right corner
TRIVERTEX with_2 = vert[1];
///with_2.x = System.Convert.ToInt32(Microsoft.VisualBasic.Compatibility.VB6.Support.PixelsToTwipsX(myFrm.ClientRectangle.Width) / Microsoft.VisualBasic.Compatibility.VB6.Support.TwipsPerPixelX());
with_2.Y = 0;
with_2.Red = LongToSignedShort(((short)(dwColour2 & 0xFF)) * 256);
with_2.Green = LongToSignedShort(System.Convert.ToInt32(((dwColour2 & 0xFF00) / 0x100) * 256));
with_2.Blue = LongToSignedShort(System.Convert.ToInt32(((dwColour2 & 0xFF0000) / 0x10000) * 256));
with_2.Alpha = (short)0;
//Colour at lower-right corner
TRIVERTEX with_3 = vert[2];
///with_3.x = System.Convert.ToInt32(Microsoft.VisualBasic.Compatibility.VB6.Support.PixelsToTwipsX(myFrm.ClientRectangle.Width) / Microsoft.VisualBasic.Compatibility.VB6.Support.TwipsPerPixelX());
///with_3.Y = System.Convert.ToInt32(Microsoft.VisualBasic.Compatibility.VB6.Support.PixelsToTwipsY(myFrm.ClientRectangle.Height) / Microsoft.VisualBasic.Compatibility.VB6.Support.TwipsPerPixelY());
with_3.Red = LongToSignedShort(((short)(dwColour3 & 0xFF)) * 256);
with_3.Green = LongToSignedShort(System.Convert.ToInt32(((dwColour3 & 0xFF00) / 0x100) * 256));
with_3.Blue = LongToSignedShort(System.Convert.ToInt32(((dwColour3 & 0xFF0000) / 0x10000) * 256));
with_3.Alpha = (short)0;
//Colour at lower-left corner
TRIVERTEX with_4 = vert[3];
with_4.x = 0;
///with_4.Y = System.Convert.ToInt32(Microsoft.VisualBasic.Compatibility.VB6.Support.PixelsToTwipsY(myFrm.ClientRectangle.Height) / Microsoft.VisualBasic.Compatibility.VB6.Support.TwipsPerPixelX());
with_4.Red = LongToSignedShort(((short)(dwColour4 & 0xFF)) * 256);
with_4.Green = LongToSignedShort(System.Convert.ToInt32(((dwColour4 & 0xFF00) / 0x100) * 256));
with_4.Blue = LongToSignedShort(System.Convert.ToInt32(((dwColour4 & 0xFF0000) / 0x10000) * 256));
with_4.Alpha = (short)0;
GRADIENT_TRIANGLE with_5 = grTri[0];
with_5.Vertex1 = 0;
with_5.Vertex2 = 1;
with_5.Vertex3 = 2;
GRADIENT_TRIANGLE with_6 = grTri[1];
with_6.Vertex1 = 0;
with_6.Vertex2 = 2;
with_6.Vertex3 = 3;
myFrm.Image = null;
}
public static extern bool GradientFill(
IntPtr hdc,
TRIVERTEX[] pVertex,
uint dwNumVertex,
GRADIENT_RECT[] pMesh,
uint dwNumMesh,
uint dwMode
);
public static void GradientFill(Graphics g, Rectangle rect, Color startColor, Color endColor, FillDirection fillDir)
{
TRIVERTEX[] vertex = new TRIVERTEX[]
{
new TRIVERTEX(rect.X, rect.Y, startColor),
new TRIVERTEX(rect.Right, rect.Bottom, endColor)
};
GRADIENT_RECT[] grect = new GRADIENT_RECT[] {
new GRADIENT_RECT(0, 1)
};
IntPtr hdc = g.GetHdc();
GradientFill(hdc, vertex, (uint)vertex.Length, grect, (uint)grect.Length, (uint)fillDir);
g.ReleaseHdc(hdc);
}
public static void Pack(BufferChunk chunk, TRIVERTEX[] vertices)
{
int nVertices = vertices.Length;
// Pack the vertices, starting with the length
chunk += nVertices;
for (int i = 0; i < nVertices; i++)
{
chunk += vertices[i].x;
chunk += vertices[i].y;
chunk += vertices[i].Alpha;
chunk += vertices[i].Blue;
chunk += vertices[i].Green;
chunk += vertices[i].Red;
}
}
/// <summary>
/// Fills <see cref="Rectangle"/> with Colors that smoothly fades from one side to the other.
/// </summary>
/// <param name="rectangle"><see cref="Rectangle"/> to fill</param>
/// <param name="startColor">Start Color for the fill</param>
/// <param name="endColor">End Color for the fill</param>
/// <param name="direction">Direction of the fade from Start to End</param>
/// <remarks>
/// This method only supports linear gradient fills
/// </remarks>
/// <exception cref="PlatformNotSupportedException">
/// Thrown when this method is used in a device older than Pocket PC 2003
/// </exception>
public void GradientFill(Rectangle rectangle, Color startColor,
Color endColor, GradientFillDirection direction)
{
var tva = new TRIVERTEX[2];
tva[0] = new TRIVERTEX(rectangle.Right, rectangle.Bottom, endColor);
tva[1] = new TRIVERTEX(rectangle.X, rectangle.Y, startColor);
var gra = new[] { new GRADIENT_RECT(0, 1) };
var hdc = Surface.GetHdc();
try
{
if (Environment.OSVersion.Platform == PlatformID.WinCE)
{
NativeMethods.GradientFill(
hdc,
tva,
(uint)tva.Length,
gra,
(uint)gra.Length,
(uint)direction);
}
else
{
NativeMethods.GdiGradientFill(
hdc,
tva,
(uint)tva.Length,
gra,
(uint)gra.Length,
(uint)direction);
}
}
catch (MissingMethodException)
{
throw new PlatformNotSupportedException("Gradient Fill is not supported in this platform");
}
finally
{
Surface.ReleaseHdc(hdc);
}
}
public static void DrawGradientFill(int dwColour1, int dwColour2, Form myFrm)
{
TRIVERTEX[] vert = new TRIVERTEX[2];
GRADIENT_RECT grRc = new GRADIENT_RECT();
//Colour at upper-left corner
TRIVERTEX with_1 = vert[0];
with_1.x = 0;
with_1.Y = 0;
with_1.Red = LongToSignedShort(((short)(dwColour1 & 0xFF)) * 256);
with_1.Green = LongToSignedShort(System.Convert.ToInt32(((dwColour1 & 0xFF00) / 0x100) * 256));
with_1.Blue = LongToSignedShort(System.Convert.ToInt32(((dwColour1 & 0xFF0000) / 0x10000) * 256));
with_1.Alpha = (short)0;
//Colour at bottom-right corner
TRIVERTEX with_2 = vert[1];
///with_2.x = System.Convert.ToInt32(Microsoft.VisualBasic.Compatibility.VB6.Support.PixelsToTwipsX(myFrm.ClientRectangle.Width) / Microsoft.VisualBasic.Compatibility.VB6.Support.TwipsPerPixelX());
///with_2.Y = System.Convert.ToInt32(Microsoft.VisualBasic.Compatibility.VB6.Support.PixelsToTwipsY(myFrm.ClientRectangle.Height) / Microsoft.VisualBasic.Compatibility.VB6.Support.TwipsPerPixelY());
with_2.Red = LongToSignedShort(((short)(dwColour2 & 0xFF)) * 256);
with_2.Green = LongToSignedShort(System.Convert.ToInt32(((dwColour2 & 0xFF00) / 0x100) * 256));
with_2.Blue = LongToSignedShort(System.Convert.ToInt32(((dwColour2 & 0xFF0000) / 0x10000) * 256));
with_2.Alpha = (short)0;
grRc.LowerRight = 0;
grRc.UpperLeft = 1;
myFrm = new Form();
myFrm.Show();
//parameters:
//hdc - display context handle of the target window
//vert(0) - first member of interest in the vert() array
//2 - number of vert() array members (not ubound(vert))
//grRc - GRADIENT_RECT info
//1 - number of grRc structures passed
//GRADIENT_FILL_RECT_DIRECTION - fill operation -
//will toggle between 0 and 1, the values of
//GRADIENT_FILL_RECT_H and GRADIENT_FILL_RECT_V.
/// GradientFill(myFrm.CreateGraphics().GetHdc().ToInt32(), ref vert[0], 2, ref grRc, 1, System.Math.Abs(GRADIENT_FILL_RECT_DIRECTION));
}
TRIVERTEX[] UnpackTRIVERTEX(BufferChunk chunk)
{
int nVertices = chunk.NextInt32();
TRIVERTEX[] pVertex = new TRIVERTEX[nVertices];
// Pack the vertices, starting with the length
for (int i = 0; i < nVertices; i++)
{
pVertex[i].x = chunk.NextInt32();
pVertex[i].y = chunk.NextInt32();
pVertex[i].Alpha = chunk.NextUInt16();
pVertex[i].Blue = chunk.NextUInt16();
pVertex[i].Green = chunk.NextUInt16();
pVertex[i].Red = chunk.NextUInt16();
}
return pVertex;
}
public void FillRect(Rect rect, Color color1, Color color2, bool horizontalGradient)
{
TRIVERTEX[] points = new TRIVERTEX[] { new TRIVERTEX(), new TRIVERTEX() };
points[0].x = rect.left;
points[0].y = rect.top;
points[0].Red = Convert.ToInt16(color1.Red << 8);
points[0].Green = Convert.ToInt16(color1.Green << 8);
points[0].Blue = Convert.ToInt16(color1.Blue << 8);
points[1].x = rect.right;
points[1].y = rect.bottom;
points[1].Red = Convert.ToInt16(color2.Red << 8);
points[1].Green = Convert.ToInt16(color2.Green << 8);
points[1].Blue = Convert.ToInt16(color2.Blue << 8);
GRADIENT_RECT gradientRect = new GRADIENT_RECT(0, 1);
NativeMethods.GradientFill(Handle, points, 2, ref gradientRect, 1, horizontalGradient ? 0 : 1);
}
// Gradient Fills
public override void GradientRectangle(TRIVERTEX[] pVertex, GRADIENT_RECT[] pMesh, uint dwMode)
{
BufferChunk chunk = new BufferChunk(1024);
chunk += GDI32.EMR_GRADIENTFILL;
// Pack the vertices
Pack(chunk, pVertex);
// Pack the gradient mesh
Pack(chunk, pMesh);
// pack the mode
chunk += dwMode;
PackCommand(chunk);
}
public static extern bool GradientFill(IntPtr hdc, TRIVERTEX[] pVertex, uint nVertex, GRADIENT_RECT[] pMesh, uint nCount, uint ulMode);
public GradientRect(TRIVERTEX[] vertices, GRADIENT_RECT[] mesh, GradientRectDirection style)
{
fVertices = vertices;
fGradientRect = mesh;
fGradientDirection = style;
}
public static void DrawGradientFillTriangle(ref int dwColour1, ref int dwColour2, ref int dwColour3, ref int dwColour4, ref Form myFrm)
{
GRADIENT_TRIANGLE[] grTri = new GRADIENT_TRIANGLE[2];
TRIVERTEX[] vert = new TRIVERTEX[4];
//Colour at upper-left corner
TRIVERTEX with_1 = vert[0];
with_1.x = 0;
with_1.Y = 0;
with_1.Red = LongToSignedShort(((short)(dwColour1 & 0xFF)) * 256);
with_1.Green = LongToSignedShort(System.Convert.ToInt32(((dwColour1 & 0xFF00) / 0x100) * 256));
with_1.Blue = LongToSignedShort(System.Convert.ToInt32(((dwColour1 & 0xFF0000) / 0x10000) * 256));
with_1.Alpha = (short)0;
//Colour at upper-right corner
TRIVERTEX with_2 = vert[1];
///with_2.x = System.Convert.ToInt32(Microsoft.VisualBasic.Compatibility.VB6.Support.PixelsToTwipsX(myFrm.ClientRectangle.Width) / Microsoft.VisualBasic.Compatibility.VB6.Support.TwipsPerPixelX());
with_2.Y = 0;
with_2.Red = LongToSignedShort(((short)(dwColour2 & 0xFF)) * 256);
with_2.Green = LongToSignedShort(System.Convert.ToInt32(((dwColour2 & 0xFF00) / 0x100) * 256));
with_2.Blue = LongToSignedShort(System.Convert.ToInt32(((dwColour2 & 0xFF0000) / 0x10000) * 256));
with_2.Alpha = (short)0;
//Colour at lower-right corner
TRIVERTEX with_3 = vert[2];
///with_3.x = System.Convert.ToInt32(Microsoft.VisualBasic.Compatibility.VB6.Support.PixelsToTwipsX(myFrm.ClientRectangle.Width) / Microsoft.VisualBasic.Compatibility.VB6.Support.TwipsPerPixelX());
///with_3.Y = System.Convert.ToInt32(Microsoft.VisualBasic.Compatibility.VB6.Support.PixelsToTwipsY(myFrm.ClientRectangle.Height) / Microsoft.VisualBasic.Compatibility.VB6.Support.TwipsPerPixelY());
with_3.Red = LongToSignedShort(((short)(dwColour3 & 0xFF)) * 256);
with_3.Green = LongToSignedShort(System.Convert.ToInt32(((dwColour3 & 0xFF00) / 0x100) * 256));
with_3.Blue = LongToSignedShort(System.Convert.ToInt32(((dwColour3 & 0xFF0000) / 0x10000) * 256));
with_3.Alpha = (short)0;
//Colour at lower-left corner
TRIVERTEX with_4 = vert[3];
with_4.x = 0;
///with_4.Y = System.Convert.ToInt32(Microsoft.VisualBasic.Compatibility.VB6.Support.PixelsToTwipsY(myFrm.ClientRectangle.Height) / Microsoft.VisualBasic.Compatibility.VB6.Support.TwipsPerPixelX());
with_4.Red = LongToSignedShort(((short)(dwColour4 & 0xFF)) * 256);
with_4.Green = LongToSignedShort(System.Convert.ToInt32(((dwColour4 & 0xFF00) / 0x100) * 256));
with_4.Blue = LongToSignedShort(System.Convert.ToInt32(((dwColour4 & 0xFF0000) / 0x10000) * 256));
with_4.Alpha = (short)0;
GRADIENT_TRIANGLE with_5 = grTri[0];
with_5.Vertex1 = 0;
with_5.Vertex2 = 1;
with_5.Vertex3 = 2;
GRADIENT_TRIANGLE with_6 = grTri[1];
with_6.Vertex1 = 0;
with_6.Vertex2 = 2;
with_6.Vertex3 = 3;
myFrm = new Form();
myFrm.Show();
//parameters:
//hdc - display context handle of the target window
//vert(0) - first member of interest in the vert() array
//4 - number of vert() array members (not ubound(vert))
//grTri(0) - first member of interest in the grTri() array
//2 - number of grTri() array members (not ubound(grTri)
//GRADIENT_FILL_TRIANGLE - fill operation
///GradientFill(myFrm.CreateGraphics().GetHdc().ToInt32(), ref vert[0], 4, ref grTri[0], 2, GRADIENT_FILL_TRIANGLE);
}
public override void GradientTriangle(TRIVERTEX[] pVertex, GRADIENT_TRIANGLE[] pMesh, uint dwMode)
{
EMRGRADIENTFILL gradFill = new EMRGRADIENTFILL();
gradFill.rclBounds = RECT.Empty;
gradFill.nVer = (uint)pVertex.Length;
gradFill.nTri = (uint)pMesh.Length;
gradFill.ulMode = dwMode;
gradFill.Ver = pVertex;
PackCommand(gradFill);
}
public static extern bool GradientTriangle( [In] SafeHandle hdc, // handle to DC TRIVERTEX[] pVertex, // array of vertices int dwNumVertex, // number of vertices GRADIENT_TRIANGLE[] pMesh, // array of gradients int dwNumMesh, // size of gradient array int dwMode // gradient fill mode );
public static void GradientFill(Graphics g, Rectangle rect, Color startColor, Color endColor, FillDirection fillDir)
{
TRIVERTEX[] vertex = new TRIVERTEX[]
{
new TRIVERTEX(rect.X,rect.Y,startColor),
new TRIVERTEX(rect.Right,rect.Bottom,endColor)
};
GRADIENT_RECT[] grect = new GRADIENT_RECT[] {
new GRADIENT_RECT(0,1)
};
IntPtr hdc = g.GetHdc();
GradientFill(hdc, vertex, (uint)vertex.Length, grect, (uint)grect.Length, (uint)fillDir);
g.ReleaseHdc(hdc);
}
public virtual void GradientTriangle(TRIVERTEX[] pVertex, GRADIENT_TRIANGLE[] pMesh, int dwMode)
{
GDI32.GradientTriangle(DeviceContext, pVertex, pVertex.Length, pMesh, pMesh.Length, dwMode);
}
private static extern Int32 GradientFill(
IntPtr hdc, TRIVERTEX[] pVertex,
uint dwNumVertex,
GRADIENT_RECT[] pMesh,
uint dwNumMesh,
uint dwMode);
public virtual void GradientFill(TRIVERTEX[] pVertex, GRADIENT_TRIANGLE[] pMesh, uint dwMode)
{
GDI32.GradientFill(HDC, pVertex, (uint)pVertex.Length, pMesh, (uint)pMesh.Length, dwMode);
}
static extern bool GradientFill(IntPtr hdc, TRIVERTEX[] pVertex, uint nVertex, int[] pMesh, int nCount, int ulMode);
