/// <summary>Draws the image from the specified <paramref name="imageList"/> within the specified bounds on a glass background.</summary>
/// <param name="rnd">The <see cref="VisualStyleRenderer"/> instance.</param>
/// <param name="g">The <see cref="Graphics"/> used to draw the image.</param>
/// <param name="bounds">A <see cref="System.Drawing.Rectangle"/> in which the image is drawn.</param>
/// <param name="imageList">An <see cref="ImageList"/> that contains the <see cref="Image"/> to draw.</param>
/// <param name="imageIndex">The index of the <see cref="Image"/> within <paramref name="imageList"/> to draw.</param>
public static void DrawGlassImage(this VisualStyleRenderer rnd, IDeviceContext g, Rectangle bounds, ImageList imageList, int imageIndex)
{
var ht = new SafeHTHEME(rnd.Handle, false);
g.DrawViaDIB(bounds, (memoryHdc, b) =>
DrawThemeIcon(ht, memoryHdc, rnd.Part, rnd.State, bounds, imageList.Handle, imageIndex));
}
/// <summary>
/// Draws the background image of the current visual style element onto a glass background within the specified bounding rectangle
/// and optionally clipped to the specified clipping rectangle.
/// </summary>
/// <param name="rnd">The <see cref="VisualStyleRenderer"/> instance.</param>
/// <param name="dc">The <see cref="IDeviceContext"/> used to draw the background image.</param>
/// <param name="bounds">A <see cref="System.Drawing.Rectangle"/> in which the background image is drawn.</param>
/// <param name="clipRectangle">A <see cref="System.Drawing.Rectangle"/> that defines a clipping rectangle for the drawing operation.</param>
/// <param name="rightToLeft">If set to <c>true</c> flip the image for right to left layout.</param>
public static void DrawGlassBackground(this VisualStyleRenderer rnd, IDeviceContext dc, Rectangle bounds, Rectangle?clipRectangle = null, bool rightToLeft = false)
{
var ht = new SafeHTHEME(rnd.Handle, false);
dc.DrawViaDIB(bounds, (memoryHdc, b) =>
{
var rBounds = new RECT(bounds);
//var opts = new DrawThemeBackgroundOptions(clipRectangle);
// Draw background
var oldLayout = DCLayout.GDI_ERROR;
if (rightToLeft)
{
if ((oldLayout = SetLayout(memoryHdc, DCLayout.LAYOUT_RTL)) == DCLayout.GDI_ERROR)
{
throw new NotSupportedException("Unable to change graphics layout to RTL.");
}
}
DrawThemeBackground(ht, memoryHdc, rnd.Part, rnd.State, rBounds, clipRectangle);
if (oldLayout != DCLayout.GDI_ERROR)
{
SetLayout(memoryHdc, oldLayout);
}
}
);
}
/// <summary>Draws the specified image within the specified bounds on a glass background.</summary>
/// <param name="rnd">The <see cref="VisualStyleRenderer"/> instance.</param>
/// <param name="g">The <see cref="Graphics"/> used to draw the image.</param>
/// <param name="bounds">A <see cref="System.Drawing.Rectangle"/> in which the image is drawn.</param>
/// <param name="image">An <see cref="ImageList"/> that contains the <see cref="Image"/> to draw.</param>
/// <param name="disabled">
/// if set to <c>true</c> draws the image in a disabled state using the <see cref="ControlPaint.DrawImageDisabled"/> method.
/// </param>
public static void DrawGlassImage(this VisualStyleRenderer rnd, IDeviceContext g, Rectangle bounds, Image image, bool disabled = false)
{
g.DrawViaDIB(bounds, (memoryHdc, b) =>
{
using (var mg = Graphics.FromHdc(memoryHdc.DangerousGetHandle()))
{
if (disabled)
{
ControlPaint.DrawImageDisabled(mg, image, bounds.X, bounds.Y, Color.Transparent);
}
else
{
mg.DrawImage(image, bounds);
}
}
}
);
}
/// <summary>
/// Draws glowing text in the specified bounding rectangle with the option of overriding text color and applying other text formatting.
/// </summary>
/// <param name="rnd">The <see cref="VisualStyleRenderer"/> instance.</param>
/// <param name="dc">The <see cref="IDeviceContext"/> used to draw the text.</param>
/// <param name="bounds">A <see cref="System.Drawing.Rectangle"/> in which the text is drawn.</param>
/// <param name="text">The text to draw.</param>
/// <param name="font">Optional font override.</param>
/// <param name="color">Optionally, the color to draw text in overriding the default color for the theme.</param>
/// <param name="flags">A bitwise combination of the <see cref="TextFormatFlags"/> values.</param>
/// <param name="glowSize">The size of the glow.</param>
public static void DrawGlowingText(this VisualStyleRenderer rnd, IDeviceContext dc, Rectangle bounds, string text, Font font, Color?color, TextFormatFlags flags = TextFormatFlags.Default, int glowSize = 10)
{
var ht = new SafeHTHEME(rnd.Handle, false);
dc.DrawViaDIB(bounds, (memoryHdc, b) =>
{
// Create and select font
using (new GdiObjectContext(memoryHdc, new SafeHFONT(font?.ToHfont() ?? IntPtr.Zero)))
{
// Draw glowing text
var dttOpts = new DTTOPTS(null)
{
GlowSize = glowSize, AntiAliasedAlpha = true
};
if (color != null)
{
dttOpts.TextColor = color.Value;
}
var textBounds = new RECT(4, 0, bounds.Right - bounds.Left, bounds.Bottom - bounds.Top);
DrawThemeTextEx(ht, memoryHdc, rnd.Part, rnd.State, text, text.Length, FromTFF(flags), ref textBounds, dttOpts);
}
}
);
}
