protected override void OnPaint(PaintEventArgs e)
{
var outerBounds = new Rectangle(0, 0, Width, Height);
using (var target = new Bitmap(outerBounds.Width, outerBounds.Height, PixelFormat.Format32bppArgb))
{
using (var targetGraphics = Graphics.FromImage(target))
{
// The top and bottom borders extend over the sides of the window.
// The left and right borders do no. This means that we need to
// update the bounds to make it seem like the left and right
// borders do extend outside of the window.
if (Border == DropShadowBorder.Left || Border == DropShadowBorder.Right)
{
outerBounds = new Rectangle(
outerBounds.Left,
outerBounds.Top - _borderWidth,
outerBounds.Width,
outerBounds.Height + _borderWidth * 2
);
}
if (Border == DropShadowBorder.Left || Border == DropShadowBorder.Top)
{
DrawImage(targetGraphics, _imageCache.CornerNW,
new Point(outerBounds.Left, outerBounds.Top)
);
}
if (Border == DropShadowBorder.Right || Border == DropShadowBorder.Top)
{
DrawImage(targetGraphics, _imageCache.CornerNE,
new Point(outerBounds.Right - _cornerSize, outerBounds.Top)
);
}
if (Border == DropShadowBorder.Bottom || Border == DropShadowBorder.Left)
{
DrawImage(targetGraphics, _imageCache.CornerSW,
new Point(outerBounds.Left, outerBounds.Bottom - _cornerSize)
);
}
if (Border == DropShadowBorder.Bottom || Border == DropShadowBorder.Right)
{
DrawImage(targetGraphics, _imageCache.CornerSE,
new Point(outerBounds.Right - _cornerSize, outerBounds.Bottom - _cornerSize)
);
}
if (Border == DropShadowBorder.Top)
{
DrawBorder(targetGraphics, _imageCache.BorderN,
new Rectangle(
outerBounds.Left + _cornerSize,
outerBounds.Top,
outerBounds.Width - _cornerSize * 2,
_borderWidth
)
);
}
if (Border == DropShadowBorder.Bottom)
{
DrawBorder(targetGraphics, _imageCache.BorderS,
new Rectangle(
outerBounds.Left + _cornerSize,
outerBounds.Bottom - _borderWidth,
outerBounds.Width - _cornerSize * 2,
_borderWidth
)
);
}
if (Border == DropShadowBorder.Left)
{
DrawBorder(targetGraphics, _imageCache.BorderW,
new Rectangle(
outerBounds.Left,
outerBounds.Top + _cornerSize,
_borderWidth,
outerBounds.Height - _cornerSize * 2
)
);
}
if (Border == DropShadowBorder.Right)
{
DrawBorder(targetGraphics, _imageCache.BorderE,
new Rectangle(
outerBounds.Right - _borderWidth,
outerBounds.Top + _cornerSize,
_borderWidth,
outerBounds.Height - _cornerSize * 2
)
);
}
}
// Get device contexts
var screenDc = PI.GetDC(IntPtr.Zero);
var memDc = PI.CreateCompatibleDC(screenDc);
var hBitmap = IntPtr.Zero;
var hOldBitmap = IntPtr.Zero;
try
{
// Get handle to the new bitmap and select it into the current device context
hBitmap = target.GetHbitmap(Color.FromArgb(0));
hOldBitmap = PI.SelectObject(memDc, hBitmap); // Set parameters for layered window update
var newSize = new PI.SIZE(target.Size); // Size window to match bitmap
var sourceLocation = new PI.POINT(Point.Empty);
var newLocation = new PI.POINT(Location); // Same as this window
var blend = new PI.BLENDFUNCTION
{
BlendOp = PI.AC_SRC_OVER, // Only works with a 32bpp bitmap
BlendFlags = 0, // Always 0
SourceConstantAlpha = 255, // Set to 255 for per-pixel alpha values
AlphaFormat = PI.AC_SRC_ALPHA // Only works when the bitmap contains an alpha channel
};
// Update the window
PI.UpdateLayeredWindow(
Handle, screenDc, ref newLocation, ref newSize,
memDc, ref sourceLocation, 0, ref blend,
PI.ULW_ALPHA
);
}
finally
{
// Release device context
PI.ReleaseDC(IntPtr.Zero, screenDc);
if (hBitmap != IntPtr.Zero)
{
PI.SelectObject(memDc, hOldBitmap);
PI.DeleteObject(hBitmap); // Remove bitmap resources
}
PI.DeleteDC(memDc);
}
}
}
/// <summary>
/// Draw text without a glowing background, for use on a composition element.
/// </summary>
/// <param name="g">Graphics reference.</param>
/// <param name="text">Text to be drawn.</param>
/// <param name="font">Font to use for text.</param>
/// <param name="bounds">Bounding area for the text.</param>
/// <param name="state">State of the source element.</param>
/// <param name="color"><see cref="Color"/> of the text.</param>
/// <param name="copyBackground">Should existing background be copied into the bitmap.</param>
/// <param name="sf">StringFormat of the memento.</param>
public static void DrawCompositionText(Graphics g,
string text,
Font font,
Rectangle bounds,
PaletteState state,
Color color,
bool copyBackground,
StringFormat sf)
{
// Get the hDC for the graphics instance and create a memory DC
IntPtr gDC = g.GetHdc();
try
{
IntPtr mDC = PI.CreateCompatibleDC(gDC);
PI.BITMAPINFO bmi = new PI.BITMAPINFO
{
biWidth = bounds.Width,
biHeight = -(bounds.Height),
biCompression = 0,
biBitCount = 32,
biPlanes = 1
};
bmi.biSize = (uint)Marshal.SizeOf(bmi);
// Create a device independent bitmap and select into the memory DC
IntPtr hDIB = PI.CreateDIBSection(gDC, ref bmi, 0, out _, IntPtr.Zero, 0);
PI.SelectObject(mDC, hDIB);
if (copyBackground)
{
// Copy existing background into the bitmap
PI.BitBlt(mDC, 0, 0, bounds.Width, bounds.Height,
gDC, bounds.X, bounds.Y, 0x00CC0020);
}
// Select the font for use when drawing
IntPtr hFont = font.ToHfont();
PI.SelectObject(mDC, hFont);
// Get renderer for the correct state
VisualStyleRenderer renderer = new VisualStyleRenderer(state == PaletteState.Normal ? VisualStyleElement.Window.Caption.Active :
VisualStyleElement.Window.Caption.Inactive);
// Create structures needed for theme drawing call
PI.RECT textBounds = new PI.RECT
{
left = 0,
top = 0,
right = (bounds.Right - bounds.Left),
bottom = (bounds.Bottom - bounds.Top)
};
PI.DTTOPTS dttOpts = new PI.DTTOPTS
{
dwSize = Marshal.SizeOf(typeof(PI.DTTOPTS)),
dwFlags = PI.DTT_COMPOSITED | PI.DTT_TEXTCOLOR,
crText = ColorTranslator.ToWin32(color)
};
// Always draw text centered
TextFormatFlags textFormat = TextFormatFlags.SingleLine |
TextFormatFlags.HorizontalCenter |
TextFormatFlags.VerticalCenter;
////Seb | TextFormatFlags.EndEllipsis;
// Perform actual drawing
//PI.DrawThemeTextEx(renderer.Handle,
// mDC, 0, 0,
// text, -1, (int)StringFormatToFlags(sf),
// ref textBounds, ref dttOpts);
PI.DrawThemeTextEx(renderer.Handle,
mDC, 0, 0,
text, -1, (int)textFormat,
ref textBounds, ref dttOpts);
// Copy to foreground
PI.BitBlt(gDC,
bounds.Left, bounds.Top,
bounds.Width, bounds.Height,
mDC, 0, 0, 0x00CC0020);
// Dispose of allocated objects
PI.DeleteObject(hFont);
PI.DeleteObject(hDIB);
PI.DeleteDC(mDC);
}
catch
{
// ignored
}
finally
{
// Must remember to release the hDC
g.ReleaseHdc(gDC);
}
}
/// <summary>
/// Draw text with a glowing background, for use on a composition element.
/// </summary>
/// <param name="g">Graphics reference.</param>
/// <param name="text">Text to be drawn.</param>
/// <param name="font">Font to use for text.</param>
/// <param name="bounds">Bounding area for the text.</param>
/// <param name="state">State of the source element.</param>
/// <param name="color">Color of the text.</param>
/// <param name="copyBackground">Should existing background be copied into the bitmap.</param>
public static void DrawCompositionGlowingText(Graphics g,
string text,
Font font,
Rectangle bounds,
PaletteState state,
Color color,
bool copyBackground)
{
try
{
// Get the hDC for the graphics instance and create a memory DC
IntPtr gDC = g.GetHdc();
IntPtr mDC = PI.CreateCompatibleDC(gDC);
PI.BITMAPINFO bmi = new PI.BITMAPINFO();
bmi.biSize = Marshal.SizeOf(bmi);
bmi.biWidth = bounds.Width;
bmi.biHeight = -(bounds.Height + GLOW_EXTRA_HEIGHT * 2);
bmi.biCompression = 0;
bmi.biBitCount = 32;
bmi.biPlanes = 1;
// Create a device independant bitmp and select into the memory DC
IntPtr hDIB = PI.CreateDIBSection(gDC, bmi, 0, 0, IntPtr.Zero, 0);
PI.SelectObject(mDC, hDIB);
if (copyBackground)
{
// Copy existing background into the bitmap
PI.BitBlt(mDC, 0, 0, bounds.Width, bounds.Height + GLOW_EXTRA_HEIGHT * 2,
gDC, bounds.X, bounds.Y - GLOW_EXTRA_HEIGHT, 0x00CC0020);
}
// Select the font for use when drawing
IntPtr hFont = font.ToHfont();
PI.SelectObject(mDC, hFont);
// Get renderer for the correct state
VisualStyleRenderer renderer = new VisualStyleRenderer(state == PaletteState.Normal ? VisualStyleElement.Window.Caption.Active :
VisualStyleElement.Window.Caption.Inactive);
// Create structures needed for theme drawing call
PI.RECT textBounds = new PI.RECT();
textBounds.left = 0;
textBounds.top = 0;
textBounds.right = (bounds.Right - bounds.Left);
textBounds.bottom = (bounds.Bottom - bounds.Top) + (GLOW_EXTRA_HEIGHT * 2);
PI.DTTOPTS dttOpts = new PI.DTTOPTS();
dttOpts.dwSize = Marshal.SizeOf(typeof(PI.DTTOPTS));
dttOpts.dwFlags = PI.DTT_COMPOSITED | PI.DTT_GLOWSIZE | PI.DTT_TEXTCOLOR;
dttOpts.crText = ColorTranslator.ToWin32(color);
dttOpts.iGlowSize = 11;
// Always draw text centered
TextFormatFlags textFormat = TextFormatFlags.SingleLine |
TextFormatFlags.HorizontalCenter |
TextFormatFlags.VerticalCenter |
TextFormatFlags.EndEllipsis;
// Perform actual drawing
PI.DrawThemeTextEx(renderer.Handle,
mDC, 0, 0,
text, -1, (int)textFormat,
ref textBounds, ref dttOpts);
// Copy to foreground
PI.BitBlt(gDC,
bounds.Left, bounds.Top - GLOW_EXTRA_HEIGHT,
bounds.Width, bounds.Height + (GLOW_EXTRA_HEIGHT * 2),
mDC, 0, 0, 0x00CC0020);
// Dispose of allocated objects
PI.DeleteObject(hFont);
PI.DeleteObject(hDIB);
PI.DeleteDC(mDC);
// Must remember to release the hDC
g.ReleaseHdc(gDC);
}
catch
{
}
}