private void PaintBehindWindow(IDeviceContext destDc, Rectangle screenBounds)
{
if (!DesktopWindowManager.IsAeroEnabled())
{
TopLevelWindow desktopWindow = TopLevelWindow.DesktopWindow;
IntPtr desktopDc = desktopWindow.GetHdc();
NativeMethods.BitBlt(destDc.GetHdc(), 0, 0, screenBounds.Width, screenBounds.Height, desktopDc,
screenBounds.X, screenBounds.Y, CopyPixelOperation.SourceCopy);
desktopWindow.ReleaseHdc();
return;
}
IntPtr dc = destDc.GetHdc();
for (int index = _visisbleWindows.Count - 1; index > -1; index--)
{
var window = _visisbleWindows[index];
if (window.Handle == ExcludeWindowBehindBlur)
{
continue;
}
Rectangle windowBounds = window.Bounds;
var inter = Rectangle.Intersect(screenBounds, windowBounds);
if (inter == Rectangle.Empty)
{
continue;
}
var localPoint = inter.Location;
NativeMethods.ScreenToClient(window.Handle, ref localPoint);
var myLocalPoint = new Point(Math.Abs(screenBounds.X - inter.X), Math.Abs(screenBounds.Y - inter.Y));
IntPtr windowDc = window.GetHdc();
if (index == _visisbleWindows.Count - 2)
{
NativeMethods.AlphaBlend(dc, myLocalPoint.X, myLocalPoint.Y, inter.Width, inter.Height, windowDc,
localPoint.X, localPoint.Y, inter.Width, inter.Height, BlendFunction.Default);
}
else
{
NativeMethods.BitBlt(dc, myLocalPoint.X, myLocalPoint.Y, inter.Width, inter.Height, windowDc,
localPoint.X, localPoint.Y, CopyPixelOperation.SourceCopy);
}
window.ReleaseHdc();
}
destDc.ReleaseHdc();
}
public int UxThemeGetThemeTextMetrics(IntPtr hTheme, IDeviceContext dc, int iPartId, int iStateId, out TextMetrics result)
{
XplatUIWin32.TEXTMETRIC metrics;
int hresult = UXTheme.GetThemeTextMetrics(hTheme, dc.GetHdc(), iPartId, iStateId, out metrics);
dc.ReleaseHdc();
TextMetrics retval = new TextMetrics();
retval.Ascent = metrics.tmAscent;
retval.AverageCharWidth = metrics.tmAveCharWidth;
retval.BreakChar = (char)metrics.tmBreakChar;
retval.CharSet = (TextMetricsCharacterSet)metrics.tmCharSet;
retval.DefaultChar = (char)metrics.tmDefaultChar;
retval.Descent = metrics.tmDescent;
retval.DigitizedAspectX = metrics.tmDigitizedAspectX;
retval.DigitizedAspectY = metrics.tmDigitizedAspectY;
retval.ExternalLeading = metrics.tmExternalLeading;
retval.FirstChar = (char)metrics.tmFirstChar;
retval.Height = metrics.tmHeight;
retval.InternalLeading = metrics.tmInternalLeading;
retval.Italic = metrics.tmItalic == 0 ? false : true;
retval.LastChar = (char)metrics.tmLastChar;
retval.MaxCharWidth = metrics.tmMaxCharWidth;
retval.Overhang = metrics.tmOverhang;
retval.PitchAndFamily = (TextMetricsPitchAndFamilyValues)metrics.tmPitchAndFamily;
retval.StruckOut = metrics.tmStruckOut == 0 ? false : true;
retval.Underlined = metrics.tmUnderlined == 0 ? false : true;
retval.Weight = metrics.tmWeight;
result = retval;
return(hresult);
}
private Padding GetThemeMargins(IDeviceContext dc,
MarginProperty marginType)
{
NativeMethods.MARGINS margins;
try {
var hDC = dc.GetHdc();
var rv = NativeMethods.GetThemeMargins(
renderer.Handle,
hDC,
renderer.Part,
renderer.State,
(int)marginType,
IntPtr.Zero,
out margins);
if (rv == 0)
{
return(new Padding(
margins.cxLeftWidth,
margins.cyTopHeight,
margins.cxRightWidth,
margins.cyBottomHeight));
}
return(new Padding(0));
}
catch (Exception) {
return(renderer.GetMargins(dc, marginType));
}
finally {
dc.ReleaseHdc();
}
}
public void DrawText(IDeviceContext dc, string text, Rectangle bounds, Color foreColor)
{
if (string.IsNullOrEmpty(text))
{
return;
}
if (dc == null)
{
throw new ArgumentNullException("dc");
}
IntPtr hDc = dc.GetHdc();
try
{
int clr = ColorTranslator.ToWin32(foreColor);
RECT rect = new RECT(bounds);
NativeMethods.DrawAlphaTextRect(hDc, text, hFont, clr, ref rect, 0);
}
finally
{
dc.ReleaseHdc();
}
}
/*** CURENTLY NOT USED ***/
public static void RenderText(IDeviceContext hdc, string text, string fontFamily, Color color, Rectangle region, float size)
{
// create the handle of DC
var h = new HandleRef(null, hdc.GetHdc());
// create the font
int emsize = -gdiNative.MulDiv((int)size, gdiNative.GetDeviceCaps(h, gdiNative.LOGPIXELSY), 72);
var p = new HandleRef(null, gdiNative.CreateFont(emsize, 0, 0, 0, 0, 0, 0, 0, 1 /*Ansi_encoding*/, 0, 0, 4, 0, fontFamily));
try {
// use the font in the DC
gdiNative.SelectObject(h, p.Handle);
// set the background to transparent
gdiNative.SetBkMode(h, 1);
// set the color of the text
gdiNative.SetTextColor(h, color);
// draw the text to the region
gdiNative.DrawText(h, text, region, 0x0100);
}
finally {
// release the resources
gdiNative.DeleteObject(p);
hdc.ReleaseHdc( );
}
}
public void DrawBlurFromScreen(Action <IDeviceContext, Rectangle> sourcePainterFunc, IDeviceContext destImage, Rectangle screenBounds, Point destLocation, int blurStrength)
{
if (screenBounds.Size.Width < 1 || screenBounds.Size.Height < 1)
{
return;
}
try {
Rectangle srcRect = new Rectangle(Point.Empty, screenBounds.Size);
Rectangle distRect = new Rectangle(0, 0, srcRect.Width / blurStrength, srcRect.Height / blurStrength);
using (GraphicsImage stretchImage = new GraphicsImage(srcRect.Size))
{
using (GraphicsImage shrinkImage = new GraphicsImage(distRect.Size))
{
sourcePainterFunc(shrinkImage.Graphics, screenBounds);
shrinkImage.Graphics.ReleaseHdc();
shrinkImage.Graphics.DrawImage(stretchImage.Image, distRect, srcRect, GraphicsUnit.Pixel);
srcRect.Location = destLocation;
Graphics g = Graphics.FromHdc(destImage.GetHdc());
g.DrawImage(shrinkImage.Image, srcRect, distRect, GraphicsUnit.Pixel);
g.Dispose();
destImage.ReleaseHdc();
}
}
} catch
{
}
}
public void DrawBlurFromScreen(Action <IDeviceContext, Rectangle> sourcePainterFunc, IDeviceContext destImage, Rectangle screenBounds, Point destLocation, int blurStrength)
{
if (screenBounds.Size.Width < 1 || screenBounds.Size.Height < 1)
{
return;
}
try
{
using (var blurImage = new Bitmap(screenBounds.Width, screenBounds.Height))
{
using (var blurImageGraphics = Graphics.FromImage(blurImage))
{
sourcePainterFunc(blurImageGraphics, screenBounds);
}
ImageTools.FastBlur(blurImage, blurStrength);
using (Graphics destGraphics = Graphics.FromHdc(destImage.GetHdc()))
{
destGraphics.DrawImage(blurImage, new Rectangle(destLocation, screenBounds.Size),
new Rectangle(Point.Empty, screenBounds.Size), GraphicsUnit.Pixel);
}
}
}
catch
{
}
}
private static void RenderText(IDeviceContext hdc, string text, string fontFamily, Color color, Rectangle region, int size)
{
// create the handle of DC
HandleRef h = new HandleRef(null, hdc.GetHdc());
// create the font
HandleRef p = new HandleRef(null, NativeMethods.CreateFont
(size, 0, 0, 0, 0, 0, 0, 0, 1 /*Ansi_encoding*/, 0, 0, 4, 0, fontFamily));
try
{
// use the font in the DC
NativeMethods.SelectObject((IntPtr)h, p.Handle);
// set the background to transparent
NativeMethods.SetBkMode((IntPtr)h, 1);
// set the color of the text
NativeMethods.SetTextColor((IntPtr)h, ColorTranslator.ToWin32(color));
// draw the text to the region
NativeMethods.DrawText(h, text, region, 0x0100);
}
finally
{
// release the resources
NativeMethods.DeleteObject((IntPtr)p);
hdc.ReleaseHdc();
}
}
internal static void DrawText(string text, IDeviceContext destImage,
Point location, Size size, byte opacity,
SolidBrush textColorBrush, StringFormat stringFormat, Font font)
{
GraphicsImage textBuffer = new GraphicsImage(size.Width, size.Height);
Rectangle drawBounds = new Rectangle(Point.Empty, size);
SolidBrush brush = textColorBrush;
Color oldColor = brush.Color;
if (opacity != 255 && opacity < oldColor.A)
{
brush.Color = Color.FromArgb(opacity, brush.Color);
}
textBuffer.Graphics.DrawString(text, font, brush, drawBounds, stringFormat);
drawBounds.Location = location;
Graphics g = Graphics.FromHdc(destImage.GetHdc());
g.DrawImage(textBuffer.Image, drawBounds);
g.Dispose();
destImage.ReleaseHdc();
brush.Color = oldColor;
textBuffer.Dispose();
}
private Padding GetMargins(IDeviceContext ctxt, MarginProperty type, IntPtr hTheme, int iPartId, int iStateId)
{
int iPropId = 0;
switch (type)
{
case MarginProperty.CaptionMargins:
iPropId = 3603;
break;
case MarginProperty.SizingMargins:
iPropId = 3601;
break;
case MarginProperty.ContentMargins:
iPropId = 3602;
break;
}
MARGINS margins;
GetThemeMargins(hTheme, ctxt.GetHdc(), iPartId, iStateId, iPropId, IntPtr.Zero, out margins);
ctxt.ReleaseHdc();
Padding padding = new Padding();
padding.Left = margins.Left;
padding.Right = margins.Right;
padding.Top = margins.Top;
padding.Bottom = margins.Bottom;
return(padding);
}
public void DrawText(IDeviceContext dc, string text, Rectangle bounds, TextFormatFlags flags)
{
if (string.IsNullOrEmpty(text))
{
return;
}
if (dc == null)
{
throw new ArgumentNullException("dc");
}
IntPtr hDc = dc.GetHdc();
try
{
int param = GetIntTextFormatFlags(flags);
RECT rect = new RECT(bounds);
NativeMethods.DrawAlphaTextRect(hDc, text, hFont, Win32Color, ref rect, param);
}
finally
{
dc.ReleaseHdc();
}
}
public void DirectDraw(IDeviceContext dc, string text, Point pt, Color foreColor, Color backColor)
{
if (string.IsNullOrEmpty(text))
{
return;
}
if (dc == null)
{
throw new ArgumentNullException("dc");
}
IntPtr hDc = dc.GetHdc();
try
{
int clr = ColorTranslator.ToWin32(foreColor);
int back = ColorTranslator.ToWin32(backColor);
NativeMethods.DrawTextDirectEx(hDc, text, hFont, clr, back, pt.X, pt.Y);
}
finally
{
dc.ReleaseHdc();
}
}
public int UxThemeDrawThemeBackground (IntPtr hTheme, IDeviceContext dc, int iPartId, int iStateId, Rectangle bounds)
{
XplatUIWin32.RECT BoundsRect = XplatUIWin32.RECT.FromRectangle (bounds);
int result = UXTheme.DrawThemeBackground(hTheme, dc.GetHdc (), iPartId, iStateId, ref BoundsRect, IntPtr.Zero);
dc.ReleaseHdc ();
return result;
}
public int UxThemeDrawThemeText (IntPtr hTheme, IDeviceContext dc, int iPartId, int iStateId, string text, TextFormatFlags textFlags, Rectangle bounds)
{
XplatUIWin32.RECT BoundsRect = XplatUIWin32.RECT.FromRectangle (bounds);
int result = UXTheme.DrawThemeText (hTheme, dc.GetHdc (), iPartId, iStateId, text, text.Length, (uint)textFlags, 0, ref BoundsRect);
dc.ReleaseHdc ();
return result;
}
public SafeGDIHandle(IDeviceContext dc) : base(IntPtr.Zero, true)
{
if (dc != null)
{
idc = dc;
base.SetHandle(idc.GetHdc());
}
}
public int UxThemeDrawThemeBackground(IntPtr hTheme, IDeviceContext dc, int iPartId, int iStateId, Rectangle_ bounds)
{
XplatUIWin32.RECT BoundsRect = XplatUIWin32.RECT.FromRectangle(bounds);
int result = UXTheme.DrawThemeBackground(hTheme, dc.GetHdc(), iPartId, iStateId, ref BoundsRect, IntPtr.Zero);
dc.ReleaseHdc();
return(result);
}
private Padding GetThemeMargins(IDeviceContext dc, MarginTypes marginType)
{
try {
var ok = NativeMethods.GetThemeMargins(_renderer.Handle, dc.GetHdc(), _renderer.Part, _renderer.State, (int)marginType, IntPtr.Zero, out var margins) == 0;
return(!ok ? new Padding(0) : new Padding(margins.cxLeftWidth, margins.cyTopHeight, margins.cxRightWidth, margins.cyBottomHeight));
} finally {
dc.ReleaseHdc();
}
}
/// <summary>Initializes a new instance of the <see cref="SafeDCHandle"/> class.</summary>
/// <param name="dc">An <see cref="IDeviceContext"/> instance.</param>
public SafeDCHandle(IDeviceContext dc) : base(true)
{
if (dc == null)
{
return;
}
idc = dc;
SetHandle(dc.GetHdc());
}
public int UxThemeDrawThemeText(IntPtr hTheme, IDeviceContext dc, int iPartId, int iStateId, string text, TextFormatFlags textFlags, Rectangle_ bounds)
{
XplatUIWin32.RECT BoundsRect = XplatUIWin32.RECT.FromRectangle(bounds);
int result = UXTheme.DrawThemeText(hTheme, dc.GetHdc(), iPartId, iStateId, text, text.Length, (uint)textFlags, 0, ref BoundsRect);
dc.ReleaseHdc();
return(result);
}
/// <summary>Initializes a new instance of the <see cref="SafeHDC"/> class.</summary>
/// <param name="dc">An <see cref="IDeviceContext"/> instance.</param>
public SafeHDC(IDeviceContext dc) : base(IntPtr.Zero)
{
if (dc == null)
{
return;
}
idc = dc;
SetHandle(dc.GetHdc());
}
/// <summary>
/// Draws composited text onto the glass area of a form.
/// </summary>
/// <param name="dc">The <see cref="IDeviceContext" /> onto which the composited text should be drawn.</param>
/// <param name="text">The text to draw.</param>
/// <param name="font">The <see cref="Font" /> to apply to the drawn text.</param>
/// <param name="bounds">The <see cref="Rectangle" /> that represents the bounds of the text.</param>
/// <param name="padding">The <see cref="Padding" /> around the text; necessary to allow space for the glow effect.</param>
/// <param name="foreColor">The <see cref="Color" /> to apply to the drawn text.</param>
/// <param name="textFormat">A bitwise combination of the <see cref="TextFormatFlags" /> values.</param>
/// <param name="glowSize">Specifies the size of a glow that will be drawn on the background prior to any text being drawn.</param>
/// <remarks>
/// <para>
/// Do not use this method to draw text on non-glass areas of a form.
/// </para>
/// </remarks>
/// <exception cref="NotSupportedException">
/// The current operating system does not support glass, or the Desktop Window
/// Manager is not enabled.
/// </exception>
/// <exception cref="ArgumentNullException">
/// <paramref name="dc" />, <paramref name="text" /> or <paramref name="font" /> is
/// <see langword="null" />.
/// </exception>
public static void DrawCompositedText(IDeviceContext dc, string text, Font font, Rectangle bounds,
Padding padding, Color foreColor, int glowSize, TextFormatFlags textFormat)
{
if (!IsDwmCompositionEnabled)
{
throw new NotSupportedException(Resources.GlassNotSupportedError);
}
if (dc == null)
{
throw new ArgumentNullException("dc");
}
if (text == null)
{
throw new ArgumentNullException("text");
}
if (font == null)
{
throw new ArgumentNullException("font");
}
var primaryHdc = dc.GetHdc();
try
{
using (var memoryHdc = NativeMethods.CreateCompatibleDC(primaryHdc))
using (var fontHandle = new SafeGDIHandle(font.ToHfont(), true))
using (var dib = NativeMethods.CreateDib(bounds, primaryHdc, memoryHdc))
{
NativeMethods.SelectObject(memoryHdc, fontHandle);
// Draw glowing text
var renderer = new VisualStyleRenderer(VisualStyleElement.Window.Caption.Active);
var dttOpts = new NativeMethods.DTTOPTS();
dttOpts.dwSize = Marshal.SizeOf(typeof(NativeMethods.DTTOPTS));
dttOpts.dwFlags = NativeMethods.DrawThemeTextFlags.Composited |
NativeMethods.DrawThemeTextFlags.GlowSize |
NativeMethods.DrawThemeTextFlags.TextColor;
dttOpts.crText = ColorTranslator.ToWin32(foreColor);
dttOpts.iGlowSize = glowSize;
var textBounds = new NativeMethods.RECT(padding.Left, padding.Top, bounds.Width - padding.Right,
bounds.Height - padding.Bottom);
NativeMethods.DrawThemeTextEx(renderer.Handle, memoryHdc, 0, 0, text, text.Length, (int)textFormat,
ref textBounds, ref dttOpts);
// Copy to foreground
const int SRCCOPY = 0x00CC0020;
NativeMethods.BitBlt(primaryHdc, bounds.Left, bounds.Top, bounds.Width, bounds.Height, memoryHdc, 0,
0, SRCCOPY);
}
}
finally
{
dc.ReleaseHdc();
}
}
public int UxThemeDrawThemeEdge (IntPtr hTheme, IDeviceContext dc, int iPartId, int iStateId, Rectangle bounds, Edges edges, EdgeStyle style, EdgeEffects effects, out Rectangle result)
{
XplatUIWin32.RECT BoundsRect = XplatUIWin32.RECT.FromRectangle (bounds);
XplatUIWin32.RECT retval;
int hresult = UXTheme.DrawThemeEdge (hTheme, dc.GetHdc (), iPartId, iStateId, ref BoundsRect, (uint)style, (uint)edges + (uint)effects, out retval);
dc.ReleaseHdc ();
result = retval.ToRectangle();
return hresult;
}
/// <summary>
/// Initializes a new instance of the <see cref="SafeDCHandle"/> class.
/// </summary>
/// <param name="dc">An <see cref="IDeviceContext"/> instance.</param>
public SafeDCHandle(IDeviceContext dc)
: base(IntPtr.Zero, true)
{
if (dc == null)
{
throw new ArgumentNullException(nameof(dc));
}
idc = dc;
SetHandle(dc.GetHdc());
}
public int UxThemeDrawThemeEdge(IntPtr hTheme, IDeviceContext dc, int iPartId, int iStateId, Rectangle_ bounds, Edges edges, EdgeStyle style, EdgeEffects effects, out Rectangle_ result)
{
XplatUIWin32.RECT BoundsRect = XplatUIWin32.RECT.FromRectangle(bounds);
XplatUIWin32.RECT retval;
int hresult = UXTheme.DrawThemeEdge(hTheme, dc.GetHdc(), iPartId, iStateId, ref BoundsRect, (uint)style, (uint)edges + (uint)effects, out retval);
dc.ReleaseHdc();
result = retval.ToRectangle();
return(hresult);
}
public int UxThemeGetThemeTextExtent(IntPtr hTheme, IDeviceContext dc, int iPartId, int iStateId, string textToDraw, TextFormatFlags flags, out Rectangle_ result)
{
XplatUIWin32.RECT retval;
int hresult = UXTheme.GetThemeTextExtent(hTheme, dc.GetHdc(), iPartId, iStateId, textToDraw, textToDraw.Length, (int)flags, 0, out retval);
dc.ReleaseHdc();
result = retval.ToRectangle();
return(hresult);
}
public int UxThemeGetThemePartSize(IntPtr hTheme, IDeviceContext dc, int iPartId, int iStateId, ThemeSizeType type, out Size_ result)
{
UXTheme.SIZE retval;
int hresult = UXTheme.GetThemePartSize(hTheme, dc.GetHdc(), iPartId, iStateId, IntPtr.Zero, (int)type, out retval);
dc.ReleaseHdc();
result = retval.ToSize();
return(hresult);
}
public int UxThemeGetThemeBackgroundContentRect(IntPtr hTheme, IDeviceContext dc, int iPartId, int iStateId, Rectangle_ bounds, out Rectangle_ result)
{
XplatUIWin32.RECT BoundsRect = XplatUIWin32.RECT.FromRectangle(bounds);
XplatUIWin32.RECT retval;
int hresult = UXTheme.GetThemeBackgroundContentRect(hTheme, dc.GetHdc(), iPartId, iStateId, ref BoundsRect, out retval);
dc.ReleaseHdc();
result = retval.ToRectangle();
return(hresult);
}
public int UxThemeGetThemeBackgroundRegion(IntPtr hTheme, IDeviceContext dc, int iPartId, int iStateId, Rectangle bounds, out Region result)
{
XplatUIWin32.RECT BoundsRect = XplatUIWin32.RECT.FromRectangle(bounds);
IntPtr retval;
int hresult = UXTheme.GetThemeBackgroundRegion(hTheme, dc.GetHdc(), iPartId, iStateId, ref BoundsRect, out retval);
dc.ReleaseHdc();
result = Region.FromHrgn(retval);
return(hresult);
}
public static void DrawText(IDeviceContext dc, String text, Rectangle bounds, TextFormatFlags format)
{
try
{
var options = new DTTOPTS();
NativeMethods.DrawThemeTextEx(Renderer.Handle, dc.GetHdc(), 0, 0, text, text.Length, format, RECT.FromRectangle(bounds), options);
}
finally
{
dc.ReleaseHdc();
}
}
public int UxThemeGetThemePartSize(IntPtr hTheme, IDeviceContext dc, int iPartId, int iStateId, Rectangle_ bounds, ThemeSizeType type, out Size_ result)
{
XplatUIWin32.RECT BoundsRect = XplatUIWin32.RECT.FromRectangle(bounds);
UXTheme.SIZE retval;
int hresult = UXTheme.GetThemePartSize(hTheme, dc.GetHdc(), iPartId, iStateId, ref BoundsRect, (int)type, out retval);
dc.ReleaseHdc();
result = retval.ToSize();
return(hresult);
}
public int UxThemeHitTestThemeBackground(IntPtr hTheme, IDeviceContext dc, int iPartId, int iStateId, HitTestOptions options, Rectangle_ backgroundRectangle, IntPtr hrgn, Point_ pt, out HitTestCode result)
{
XplatUIWin32.RECT BoundsRect = XplatUIWin32.RECT.FromRectangle(backgroundRectangle);
HitTestCode retval;
int hresult = UXTheme.HitTestThemeBackground(hTheme, dc.GetHdc(), iPartId, iStateId, (uint)options, ref BoundsRect, hrgn, new POINT(pt.X, pt.Y), out retval);
dc.ReleaseHdc();
result = (HitTestCode)retval;
return(hresult);
}
public int UxThemeGetThemeMargins(IntPtr hTheme, IDeviceContext dc, int iPartId, int iStateId, MarginProperty prop, out Padding result)
{
UXTheme.MARGINS retval = new UXTheme.MARGINS();
XplatUIWin32.RECT BoundsRect;
int hresult = UXTheme.GetThemeMargins(hTheme, dc.GetHdc(), iPartId, iStateId, (int)prop, out BoundsRect, out retval);
dc.ReleaseHdc();
result = retval.ToPadding();
return(hresult);
}
public void VisualStyleRendererDrawBackgroundExcludingArea(IntPtr theme, IDeviceContext dc, int part, int state, Rectangle_ bounds, Rectangle_ excludedArea)
{
XplatUIWin32.RECT bounds_rect = XplatUIWin32.RECT.FromRectangle(bounds);
IntPtr hdc = dc.GetHdc();
XplatUIWin32.Win32ExcludeClipRect(hdc, excludedArea.Left, excludedArea.Top, excludedArea.Right, excludedArea.Bottom);
UXTheme.DrawThemeBackground(theme, hdc, part, state, ref bounds_rect, IntPtr.Zero);
IntPtr hrgn = XplatUIWin32.Win32CreateRectRgn(excludedArea.Left, excludedArea.Top, excludedArea.Right, excludedArea.Bottom);
XplatUIWin32.Win32ExtSelectClipRgn(hdc, hrgn, (int)ClipCombineMode.RGN_OR);
XplatUIWin32.Win32DeleteObject(hrgn);
dc.ReleaseHdc();
}
Padding GetThemeMargins(IDeviceContext dc, MarginTypes marginType)
{
NativeMethods.Margins margins;
try
{
IntPtr hDc = dc.GetHdc();
if (NativeMethods.GetThemeMargins(Renderer.Handle, hDc, Renderer.Part, Renderer.State, (int)marginType, IntPtr.Zero, out margins) == 0)
{
return new Padding(margins.cxLeftWidth, margins.cyTopHeight, margins.cxRightWidth, margins.cyBottomHeight);
}
return new Padding(0);
}
finally
{
dc.ReleaseHdc();
}
}
public int UxThemeGetThemeTextMetrics (IntPtr hTheme, IDeviceContext dc, int iPartId, int iStateId, out TextMetrics result)
{
XplatUIWin32.TEXTMETRIC metrics;
int hresult = UXTheme.GetThemeTextMetrics (hTheme, dc.GetHdc (), iPartId, iStateId, out metrics);
dc.ReleaseHdc ();
TextMetrics retval = new TextMetrics ();
retval.Ascent = metrics.tmAscent;
retval.AverageCharWidth = metrics.tmAveCharWidth;
retval.BreakChar =(char)metrics.tmBreakChar;
retval.CharSet = (TextMetricsCharacterSet)metrics.tmCharSet;
retval.DefaultChar = (char)metrics.tmDefaultChar;
retval.Descent = metrics.tmDescent;
retval.DigitizedAspectX = metrics.tmDigitizedAspectX;
retval.DigitizedAspectY = metrics.tmDigitizedAspectY;
retval.ExternalLeading = metrics.tmExternalLeading;
retval.FirstChar = (char)metrics.tmFirstChar;
retval.Height = metrics.tmHeight;
retval.InternalLeading = metrics.tmInternalLeading;
retval.Italic = metrics.tmItalic == 0 ? false : true;
retval.LastChar = (char)metrics.tmLastChar;
retval.MaxCharWidth = metrics.tmMaxCharWidth;
retval.Overhang = metrics.tmOverhang;
retval.PitchAndFamily = (TextMetricsPitchAndFamilyValues)metrics.tmPitchAndFamily;
retval.StruckOut = metrics.tmStruckOut == 0 ? false : true;
retval.Underlined = metrics.tmUnderlined == 0 ? false : true;
retval.Weight = metrics.tmWeight;
result = retval;
return hresult;
}
public GraphicsHDC(IDeviceContext graphics)
{
this.graphics = graphics;
this.h = graphics.GetHdc();
}
public SafeGDIHandle(IDeviceContext dc)
: base(IntPtr.Zero, true)
{
if (dc != null)
{
idc = dc;
base.SetHandle(idc.GetHdc());
}
}
public int UxThemeGetThemeMargins (IntPtr hTheme, IDeviceContext dc, int iPartId, int iStateId, MarginProperty prop, out Padding result)
{
UXTheme.MARGINS retval = new UXTheme.MARGINS ();
XplatUIWin32.RECT BoundsRect;
int hresult = UXTheme.GetThemeMargins (hTheme, dc.GetHdc (), iPartId, iStateId, (int)prop, out BoundsRect, out retval);
dc.ReleaseHdc ();
result = retval.ToPadding();
return hresult;
}
public int UxThemeGetThemePartSize (IntPtr hTheme, IDeviceContext dc, int iPartId, int iStateId, Rectangle bounds, ThemeSizeType type, out Size result)
{
XplatUIWin32.RECT BoundsRect = XplatUIWin32.RECT.FromRectangle (bounds);
UXTheme.SIZE retval;
int hresult = UXTheme.GetThemePartSize (hTheme, dc.GetHdc (), iPartId, iStateId, ref BoundsRect, (int)type, out retval);
dc.ReleaseHdc ();
result = retval.ToSize();
return hresult;
}
public int UxThemeGetThemePartSize (IntPtr hTheme, IDeviceContext dc, int iPartId, int iStateId, ThemeSizeType type, out Size result)
{
UXTheme.SIZE retval;
int hresult = UXTheme.GetThemePartSize (hTheme, dc.GetHdc (), iPartId, iStateId, IntPtr.Zero, (int)type, out retval);
dc.ReleaseHdc ();
result = retval.ToSize ();
return hresult;
}
public int UxThemeGetThemeTextExtent (IntPtr hTheme, IDeviceContext dc, int iPartId, int iStateId, string textToDraw, TextFormatFlags flags, out Rectangle result)
{
XplatUIWin32.RECT retval;
int hresult = UXTheme.GetThemeTextExtent (hTheme, dc.GetHdc (), iPartId, iStateId, textToDraw, textToDraw.Length, (int)flags, 0, out retval);
dc.ReleaseHdc ();
result = retval.ToRectangle ();
return hresult;
}
public void VisualStyleRendererDrawBackgroundExcludingArea (IntPtr theme, IDeviceContext dc, int part, int state, Rectangle bounds, Rectangle excludedArea)
{
XplatUIWin32.RECT bounds_rect = XplatUIWin32.RECT.FromRectangle (bounds);
IntPtr hdc = dc.GetHdc ();
XplatUIWin32.Win32ExcludeClipRect (hdc, excludedArea.Left, excludedArea.Top, excludedArea.Right, excludedArea.Bottom);
UXTheme.DrawThemeBackground (theme, hdc, part, state, ref bounds_rect, IntPtr.Zero);
IntPtr hrgn = XplatUIWin32.Win32CreateRectRgn (excludedArea.Left, excludedArea.Top, excludedArea.Right, excludedArea.Bottom);
XplatUIWin32.Win32ExtSelectClipRgn (hdc, hrgn, (int)ClipCombineMode.RGN_OR);
XplatUIWin32.Win32DeleteObject (hrgn);
dc.ReleaseHdc ();
}
public int UxThemeGetThemeBackgroundContentRect (IntPtr hTheme, IDeviceContext dc, int iPartId, int iStateId, Rectangle bounds, out Rectangle result)
{
XplatUIWin32.RECT BoundsRect = XplatUIWin32.RECT.FromRectangle (bounds);
XplatUIWin32.RECT retval;
int hresult = UXTheme.GetThemeBackgroundContentRect (hTheme, dc.GetHdc (), iPartId, iStateId, ref BoundsRect, out retval);
dc.ReleaseHdc ();
result = retval.ToRectangle ();
return hresult;
}
void Paint (WidgetType widgetType, Rectangle bounds, IDeviceContext dc, TransparencyType transparencyType, Color background, DeviceContextType deviceContextType, Rectangle clippingArea, Painter painter, Rectangle excludedArea)
{
Rectangle painted_area = Rectangle.Intersect (bounds, clippingArea);
if (painted_area.Width == 0 || painted_area.Height == 0)
return;
painted_area.Offset (-bounds.X, -bounds.Y);
excludedArea.Offset (-bounds.X, -bounds.Y);
GdkDrawablePointer drawable = gdk_pixmap_new (IntPtr.Zero, bounds.Width, bounds.Height, 24);
painter.AttachStyle (widgetType, drawable, this);
GdkPixbufPointer pixbuf;
IntPtr pixel_data;
int rowstride;
GdkGCPointer gc = gdk_gc_new (drawable);
GdkColor color = new GdkColor (background);
gdk_gc_set_rgb_fg_color (gc, ref color);
Paint (drawable, gc, bounds, widgetType, out pixbuf, out pixel_data, out rowstride, painted_area, painter, excludedArea);
GdkPixbufPointer white_pixbuf = IntPtr.Zero;
IntPtr white_pixel_data = IntPtr.Zero;
int white_rowstride = 0;
GdkColor white_color = new GdkColor();
if (transparencyType == TransparencyType.Alpha) {
white_color.red = guint16.MaxValue;
white_color.green = guint16.MaxValue;
white_color.blue = guint16.MaxValue;
gdk_gc_set_rgb_fg_color (gc, ref white_color);
Paint (drawable, gc, bounds, widgetType, out white_pixbuf, out white_pixel_data, out white_rowstride, painted_area, painter, excludedArea);
}
g_object_unref (gc);
unsafe {
byte* row = (byte*)pixel_data;
byte* pixel;
byte* white_row = (byte*)white_pixel_data;
byte* white_pixel;
for (int row_index = 0; row_index < painted_area.Height; row_index++) {
pixel = row;
white_pixel = white_row;
for (int pixel_index = 0; pixel_index < painted_area.Width; pixel_index++) {
const int GdkRedOffset = 0;
const int GdkGreenOffset = 1;
const int GdkBlueOffset = 2;
const int BitmapAlphaOffset = 3;
const int BitmapRedOffset = 2;
const int BitmapBlueOffset = 0;
switch (transparencyType) {
case TransparencyType.Alpha:
pixel [BitmapAlphaOffset] = (byte)(pixel [GdkRedOffset] - white_pixel [GdkRedOffset] + byte.MaxValue);
break;
case TransparencyType.Color:
if (
pixel [GdkRedOffset] == background.R &&
pixel [GdkGreenOffset] == background.G &&
pixel [GdkBlueOffset] == background.B) {
const int AlphaFullyTransparent = 0;
pixel [BitmapAlphaOffset] = AlphaFullyTransparent;
}
break;
}
byte temporary = pixel [GdkRedOffset];
pixel [BitmapBlueOffset] = pixel [GdkBlueOffset];
pixel [BitmapRedOffset] = temporary;
const int PixelSize = 4;
pixel += PixelSize;
white_pixel += PixelSize;
}
row += rowstride;
white_row += white_rowstride;
}
}
if (transparencyType == TransparencyType.Alpha)
g_object_unref (white_pixbuf);
g_object_unref (drawable);
Bitmap bitmap = new Bitmap (painted_area.Width, painted_area.Height, rowstride, PixelFormat.Format32bppPArgb, pixel_data);
Graphics g;
bool graphics_is_from_hdc = false;
switch (deviceContextType) {
case DeviceContextType.Graphics:
g = (Graphics)dc;
break;
case DeviceContextType.Native:
g = Graphics.FromHdc (dc.GetHdc ());
break;
default:
g = dc as Graphics;
if (g == null) {
graphics_is_from_hdc = true;
g = Graphics.FromHdc (dc.GetHdc ());
} else
graphics_is_from_hdc = false;
break;
}
painted_area.Offset (bounds.X, bounds.Y);
g.DrawImage (bitmap, painted_area.Location);
switch (deviceContextType) {
case DeviceContextType.Graphics:
break;
case DeviceContextType.Native:
g.Dispose ();
dc.ReleaseHdc ();
break;
default:
if (graphics_is_from_hdc) {
g.Dispose ();
dc.ReleaseHdc ();
}
break;
}
bitmap.Dispose ();
g_object_unref (pixbuf);
}
public int UxThemeHitTestThemeBackground (IntPtr hTheme, IDeviceContext dc, int iPartId, int iStateId, HitTestOptions options, Rectangle backgroundRectangle, IntPtr hrgn, Point pt, out HitTestCode result)
{
XplatUIWin32.RECT BoundsRect = XplatUIWin32.RECT.FromRectangle (backgroundRectangle);
int retval;
int hresult = UXTheme.HitTestThemeBackground (hTheme, dc.GetHdc (), iPartId, iStateId, (uint)options, ref BoundsRect, hrgn, new POINT(pt.X, pt.Y), out retval);
dc.ReleaseHdc ();
result = (HitTestCode)retval;
return hresult;
}
