/// <summary>
/// Get color by parsing given RGBA value color string (RGBA(255,180,90,180))
/// </summary>
/// <returns>true - valid color, false - otherwise</returns>
private static bool GetColorByRgba(string str, int idx, int length, out RColor color)
{
int r = -1;
int g = -1;
int b = -1;
int a = -1;
if (length > 13)
{
int s = idx + 5;
r = ParseIntAtIndex(str, ref s);
if (s < idx + length)
{
g = ParseIntAtIndex(str, ref s);
}
if (s < idx + length)
{
b = ParseIntAtIndex(str, ref s);
}
if (s < idx + length)
{
a = ParseIntAtIndex(str, ref s);
}
}
if (r > -1 && g > -1 && b > -1 && a > -1)
{
color = RColor.FromArgb(a, r, g, b);
return(true);
}
color = RColor.Empty;
return(false);
}
/// <summary>
/// Get color by parsing given RGB value color string (RGB(255,180,90))
/// </summary>
/// <returns>true - valid color, false - otherwise</returns>
private static bool GetColorByRgb(string str, int idx, int length, out RColor color)
{
var r = -1;
var g = -1;
var b = -1;
if (length > 10)
{
var s = idx + 4;
r = ParseIntAtIndex(str, ref s);
if (s < idx + length)
{
g = ParseIntAtIndex(str, ref s);
}
if (s < idx + length)
{
b = ParseIntAtIndex(str, ref s);
}
}
if (r > -1 && g > -1 && b > -1)
{
color = RColor.FromArgb(r, g, b);
return(true);
}
color = RColor.Empty;
return(false);
}
/// <summary>
/// Get color by parsing given hex value color string (#A28B34).
/// </summary>
/// <returns>true - valid color, false - otherwise</returns>
private static bool GetColorByHex(string str, int idx, int length, out RColor color)
{
int r = -1;
int g = -1;
int b = -1;
if (length == 7)
{
r = ParseHexInt(str, idx + 1, 2);
g = ParseHexInt(str, idx + 3, 2);
b = ParseHexInt(str, idx + 5, 2);
}
else if (length == 4)
{
r = ParseHexInt(str, idx + 1, 1);
r = r * 16 + r;
g = ParseHexInt(str, idx + 2, 1);
g = g * 16 + g;
b = ParseHexInt(str, idx + 3, 1);
b = b * 16 + b;
}
if (r > -1 && g > -1 && b > -1)
{
color = RColor.FromArgb(r, g, b);
return(true);
}
color = RColor.Empty;
return(false);
}
/// <summary>
/// Draw video title on top of the iframe if found.
/// </summary>
private void DrawTitle(RGraphics g, RRect rect)
{
if (_videoTitle != null && _imageWord.Width > 40 && _imageWord.Height > 40)
{
var font = HtmlContainer.Adapter.GetFont("Arial", 9f, RFontStyle.Regular);
g.DrawRectangle(g.GetSolidBrush(RColor.FromArgb(160, 0, 0, 0)), rect.Left, rect.Top, rect.Width, ActualFont.Height + 7);
var titleRect = new RRect(rect.Left + 3, rect.Top + 3, rect.Width - 6, rect.Height - 6);
g.DrawString(_videoTitle, font, RColor.WhiteSmoke, titleRect.Location, RSize.Empty, false);
}
}
/// <summary>
/// Draw play over the iframe if we found link url.
/// </summary>
private void DrawPlay(RGraphics g, RRect rect)
{
if (_isVideo && _imageWord.Width > 70 && _imageWord.Height > 50)
{
var prevMode = g.SetAntiAliasSmoothingMode();
var size = new RSize(60, 40);
var left = rect.Left + (rect.Width - size.Width) / 2;
var top = rect.Top + (rect.Height - size.Height) / 2;
g.DrawRectangle(g.GetSolidBrush(RColor.FromArgb(160, 0, 0, 0)), left, top, size.Width, size.Height);
RPoint[] points =
{
new RPoint(left + size.Width / 3f + 1, top + 3 * size.Height / 4f),
new RPoint(left + size.Width / 3f + 1, top + size.Height / 4f),
new RPoint(left + 2 * size.Width / 3f + 1, top + size.Height / 2f)
};
g.DrawPolygon(g.GetSolidBrush(RColor.White), points);
g.ReturnPreviousSmoothingMode(prevMode);
}
}
/// <summary>
/// Makes the specified color darker for inset/outset borders.
/// </summary>
private static RColor Darken(RColor c)
{
return(RColor.FromArgb(c.R / 2, c.G / 2, c.B / 2));
}
/// <summary>
/// Convert from WinForms color to core color.
/// </summary>
public static RColor Convert(SKColor c)
{
return(RColor.FromArgb(c.Alpha, c.Red, c.Green, c.Blue));
}
/// <summary>
/// Convert from WPF color to core color.
/// </summary>
public static RColor Convert(Color c)
{
return(RColor.FromArgb(c.A, c.R, c.G, c.B));
}
public static RColor ToRColor(this SDL.SDL_Color color)
{
return(RColor.FromArgb(color.a, color.r, color.g, color.b));
}
protected override RColor GetColorInt(string colorName)
{
var color = Color.FromName(colorName);
return(RColor.FromArgb(color.A, color.R, color.G, color.B));
}
/// <summary>
/// Convert from WinForms color to core color.
/// </summary>
public static RColor Convert(XColor c)
{
var gc = c.ToGdiColor();
return(RColor.FromArgb(gc.A, gc.R, gc.G, gc.B));
}
/// <summary>
/// Convert from Eto color to core color.
/// </summary>
public static RColor Convert(Color c)
{
return(RColor.FromArgb(c.Ab, c.Rb, c.Gb, c.Bb));
}