public void GradientFillRectangle(Rect theRect, System.Drawing.Color Color1, System.Drawing.Color Color2, System.Drawing.Drawing2D.LinearGradientMode GradientType)
{
int ColorR1 = Color1.R;
int ColorG1 = Color1.G;
int ColorB1 = Color1.B;
int ColorR2 = Color2.R - ColorR1;
int ColorG2 = Color2.G - ColorG1;
int ColorB2 = Color2.B - ColorB1;
int Width = theRect.Size.X;
int Height = theRect.Size.Y;
int x0 = theRect.Location.X;
int y0 = theRect.Location.Y;
int x1 = theRect.Right;
int y1 = theRect.Bottom;
if (Width <= 0 || Height <= 0)
return;
double Coeff;
int StepSize;
API.RECT R = new API.RECT();
const int NumberOfSteps = 128; // number of steps
if (GradientType == System.Drawing.Drawing2D.LinearGradientMode.Horizontal)
{
double InvWidth = 1.0 / Width;
StepSize = Width / NumberOfSteps;
if (StepSize < 1)
StepSize = 1;
R.Top = y0;
R.Bottom = y1;
for (int i = x0; i <= x1; i += StepSize)
{
R.Left = i;
R.Right = i + StepSize;
if (R.Right > x1)
{
R.Right = x1;
}
Coeff = (i - x0) * InvWidth;
IntPtr hBrush = API.CreateSolidBrush((int)
(int)(ColorR1 + (double)ColorR2 * Coeff) |
(int)(ColorG1 + (double)ColorG2 * Coeff) << 8 |
(int)(ColorB1 + (double)ColorB2 * Coeff) << 16
);
API.FillRect(hDC, ref R, hBrush);
API.DeleteObject(hBrush);
}
}
else
{
double InvHeight = 1.0 / Height;
StepSize = Height / NumberOfSteps;
if (StepSize < 1)
StepSize = 1;
R.Left = x0;
R.Right = x1;
for (int i = y0; i <= y1; i += StepSize)
{
R.Top = i;
R.Bottom = i + StepSize;
if (R.Bottom > y1)
{
R.Bottom = y1;
}
Coeff = (i - y0) * InvHeight;
IntPtr hBrush = API.CreateSolidBrush(
(int)(ColorR1 + (double)ColorR2 * Coeff) |
(int)(ColorG1 + (double)ColorG2 * Coeff) << 8 |
(int)(ColorB1 + (double)ColorB2 * Coeff) << 16
);
API.FillRect(hDC, ref R, hBrush);
API.DeleteObject(hBrush);
}
}
}
public void DrawString(string Text, Rect theRect, IFontStyleInfo theFont)
{
GDIFontStyle FontStyle = (GDIFontStyle)theFont;
if (CurrentTextColor != FontStyle.Win32ForeColor)
{
CurrentTextColor = FontStyle.Win32ForeColor;
API.SetTextColor(hDC, FontStyle.Win32ForeColor);
}
IntPtr hOldFont = API.SelectObject(hDC, ((GDIFont)FontStyle.Font).hFont);
API.RECT r = new API.RECT();
r.Left = theRect.Location.X;
r.Top = theRect.Location.Y;
r.Right = theRect.Right;
r.Bottom = theRect.Bottom;
// API.DrawText(hDC, Text, Text.Length, ref r, 2368);
API.ExtTextOut(hDC, r.Left, r.Top, 4, ref r, Text, (uint)Text.Length, null);
API.SelectObject(hDC, hOldFont);
// No need to Delete hFont because we're going to reuse it
// it is being saved in GDIFontStyle FontStyle
// API.DeleteObject(hFont);
// No need to restore old text color
// because we're setting it new each time anyway
// API.SetTextColor(hDC, hOldColor);
}