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 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>
/// 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(Properties.Resources.GlassNotSupportedError);
}
if (dc == null)
{
throw new ArgumentNullException("dc");
}
if (text == null)
{
throw new ArgumentNullException("text");
}
if (font == null)
{
throw new ArgumentNullException("font");
}
IntPtr primaryHdc = dc.GetHdc();
try
{
using (SafeDeviceHandle memoryHdc = NativeMethods.CreateCompatibleDC(primaryHdc))
using (SafeGDIHandle fontHandle = new SafeGDIHandle(font.ToHfont(), true))
using (SafeGDIHandle dib = NativeMethods.CreateDib(bounds, primaryHdc, memoryHdc))
{
NativeMethods.SelectObject(memoryHdc, fontHandle);
// Draw glowing text
System.Windows.Forms.VisualStyles.VisualStyleRenderer renderer = new System.Windows.Forms.VisualStyles.VisualStyleRenderer(System.Windows.Forms.VisualStyles.VisualStyleElement.Window.Caption.Active);
NativeMethods.DTTOPTS 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;
NativeMethods.RECT 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();
}
}
private Padding GetThemeMargins(IDeviceContext dc, NativeRenderer.MarginTypes marginType)
{
try {
NativeRenderer.NativeMethods.MARGINS pMargins;
if (NativeRenderer.NativeMethods.GetThemeMargins(this.renderer.Handle, dc.GetHdc(), this.renderer.Part, this.renderer.State, (int)marginType, IntPtr.Zero, out pMargins) == 0)
{
return(new Padding(pMargins.cxLeftWidth, pMargins.cyTopHeight, pMargins.cxRightWidth, pMargins.cyBottomHeight));
}
else
{
return(new Padding(0));
}
} finally {
dc.ReleaseHdc();
}
}
Padding GetThemeMargins(IDeviceContext dc, MarginTypes marginType)
{
try
{
IntPtr hDC = dc.GetHdc();
if (0 == NativeMethods.GetThemeMargins(renderer.Handle, hDC, renderer.Part, renderer.State, (int)marginType, IntPtr.Zero, out NativeMethods.MARGINS margins))
{
return(new Padding(margins.cxLeftWidth, margins.cyTopHeight, margins.cxRightWidth, margins.cyBottomHeight));
}
return(new Padding(0));
}
finally
{
dc.ReleaseHdc();
}
}
/// <summary>
/// Provides the size, in pixels, of the specified text.
/// </summary>
/// <param name="dc">The device context in which to measure the text.</param>
/// <param name="text">The text to measure.</param>
/// <param name="font">The <see cref="Font" /> to apply to the measured text.</param>
/// <param name="textFormat">A bitwise combination of the <see cref="TextFormatFlags" /> values.</param>
/// <returns>
/// The <see cref="Size" />, in pixels, of <paramref name="text" /> drawn with the specified
/// <paramref name="font" /> and format.
/// </returns>
/// <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 Size MeasureCompositedText(IDeviceContext dc, string text, Font font, 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
{
var bounds = new Rectangle(0, 0, int.MaxValue, int.MaxValue);
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);
var renderer = new VisualStyleRenderer(VisualStyleElement.Window.Caption.Active);
var bounds2 = new NativeMethods.RECT(bounds);
NativeMethods.RECT rect;
NativeMethods.GetThemeTextExtent(renderer.Handle, memoryHdc, 0, 0, text, text.Length,
(int)textFormat, ref bounds2, out rect);
return(new Size(rect.Right - rect.Left, rect.Bottom - rect.Top));
}
}
finally
{
dc.ReleaseHdc();
}
}
/// <summary>
/// Provides the size, in pixels, of the specified text.
/// </summary>
/// <param name="dc">The device context in which to measure the text.</param>
/// <param name="text">The text to measure.</param>
/// <param name="font">The <see cref="Font"/> to apply to the measured text.</param>
/// <param name="textFormat">A bitwise combination of the <see cref="TextFormatFlags" /> values.</param>
/// <returns>The <see cref="Size"/>, in pixels, of <paramref name="text"/> drawn with the specified <paramref name="font"/> and format.</returns>
/// <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 Size MeasureCompositedText(IDeviceContext dc, string text, Font font, TextFormatFlags textFormat)
{
if (!IsDwmCompositionEnabled)
{
throw new NotSupportedException("The current operating system does not support glass, or the Desktop Window Manager is not enabled.");
}
if (dc == null)
{
throw new ArgumentNullException("dc");
}
if (text == null)
{
throw new ArgumentNullException("text");
}
if (font == null)
{
throw new ArgumentNullException("font");
}
IntPtr primaryHdc = dc.GetHdc();
try
{
Rectangle bounds = new Rectangle(0, 0, int.MaxValue, int.MaxValue);
using (SafeDeviceHandle memoryHdc = Natives.CreateCompatibleDC(primaryHdc))
using (SafeGDIHandle fontHandle = new SafeGDIHandle(font.ToHfont(), true))
using (SafeGDIHandle dib = Natives.CreateDib(bounds, primaryHdc, memoryHdc))
{
Natives.SelectObject(memoryHdc, fontHandle);
System.Windows.Forms.VisualStyles.VisualStyleRenderer renderer = new System.Windows.Forms.VisualStyles.VisualStyleRenderer(System.Windows.Forms.VisualStyles.VisualStyleElement.Window.Caption.Active);
Natives.RECT bounds2 = new Natives.RECT(bounds);
Natives.RECT rect;
Natives.GetThemeTextExtent(renderer.Handle, memoryHdc, 0, 0, text, text.Length, (int)textFormat, ref bounds2, out rect);
return(new Size(rect.Right - rect.Left, rect.Bottom - rect.Top));
}
}
finally
{
dc.ReleaseHdc();
}
}
public static void MaskOutCorners(ImageWithDeviceContext destImage, int destWidth,
Size frameSize, IDeviceContext maskOutBitmap, Padding stretchExcludeMargins, int maskOutColor, int nYOriginSrc)
{
// Doesn't maskout all the image, just the right and left exclude margins
if (maskOutBitmap != null)
{
IntPtr destDc = destImage.GetHdc();
IntPtr srcDc = maskOutBitmap.GetHdc();
if (stretchExcludeMargins.Left > 0)
{
NativeMethods.TransparentBlt(destDc, 0, 0, stretchExcludeMargins.Left, frameSize.Height, srcDc, 0,
nYOriginSrc, stretchExcludeMargins.Left, frameSize.Height,
maskOutColor);
//BitBlt(DestDC, 0, 0, StretchRect.Left, FrameHeight, _
// MaskOutBitmap.DC, 0, Me.State(State), CopyPixelOperation.SourceAnd)
}
if (stretchExcludeMargins.Right > 0)
{
NativeMethods.TransparentBlt(destDc, (destWidth - stretchExcludeMargins.Right) + 0, 0,
stretchExcludeMargins.Right, frameSize.Height, srcDc, frameSize.Width - (stretchExcludeMargins.Right),
nYOriginSrc, stretchExcludeMargins.Right, frameSize.Height,
maskOutColor);
//BitBlt(DestDC, (DestWidth - StretchRect.Right) + 0, _
// 0, StretchRect.Right, FrameHeight, _
// MaskOutBitmap.DC, FrameWidth - (StretchRect.Right), _
// Me.State(State), StretchRect.Right, FrameHeight, MaskOutColor)
}
//TransparentBlt(DestDC, _
// StretchRect.Left, StretchRect.Top, _
// DestWidth - (StretchRect.Left + StretchRect.Right), _
// FrameHeight, _
// Image.DC, _
// StretchRect.Left, Me.State(State) + +StretchRect.Top, _
// FrameWidth - (StretchRect.Left + StretchRect.Right), _
// FrameHeight, _
// MaskOutColor)
destImage.ReleaseHdc();
maskOutBitmap.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();
}
}
private Padding GetThemeMargins(IDeviceContext dc, MarginTypes marginType)
{
try
{
IntPtr hDC = dc.GetHdc();
MARGINS margins;
if (DllImports.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();
}
}
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();
}
}
static Rectangle RangeBound(this IDeviceContext dc, Font font, string text,
Rectangle container, int start, int end, out Rectangle textBound, out Rectangle uptoIndex, DrawTextFlags?flags = null)
{
textBound = Rectangle.Empty;
uptoIndex = Rectangle.Empty;
if (string.IsNullOrEmpty(text))
{
return(Rectangle.Empty);
}
IntPtr hdc = dc.GetHdc();
IntPtr _font = SelectObject(hdc, font.ToHfont());
var rc = hdc.rangeBound(text, container, start, end, out textBound, out uptoIndex, flags: flags);
DeleteObject(SelectObject(hdc, _font));
dc.ReleaseHdc();
return(rc);
}
private Padding GetThemeMargins(IDeviceContext dc, MarginTypes marginType)
{
Padding padding;
try {
NativeMethods.MARGINS margins;
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));
}
padding = new Padding(0);
}
finally {
dc.ReleaseHdc();
}
return(padding);
}
public static void HighlightText(this IDeviceContext dc, Font font, string text,
Rectangle container, int start, int end, Color highlightForeColor, Color highlightBackColorStart,
Color?highlightBackColorEnd, DrawTextFlags?flags = null)
{
IntPtr hdc = dc.GetHdc();
IntPtr _font = SelectObject(hdc, font.ToHfont());
Dimension dm = container;
var flag = flags.getMeasureFlag(false);
SetBkMode(hdc, ColorTranslator.ToWin32(Color.Transparent));
//first draw whole text
DrawText(hdc, text, text.Length, ref dm, 0);
//now get the highlight rectangle which will draw the highlighted text
Rectangle textBound, uptoIndex;
var rect = hdc.rangeBound(text, container, start, end, out textBound, out uptoIndex, flags: flags);
dm = rect;
var _backColorEnd = highlightBackColorEnd ?? highlightBackColorStart;
hdc.Fill(rect, highlightBackColorStart, _backColorEnd, Angle.A0);
SetTextColor(hdc, ColorTranslator.ToWin32(highlightForeColor));
if (start < 0 || start > text.Length - 1 || end < 0 || end > text.Length - 1)
{
throw new Exception("start and end value must be with in text length");
}
var _text = text.Substring(start, end - start + 1);
DrawText(hdc, _text, _text.Length, ref dm, 0);
DeleteObject(SelectObject(hdc, _font));
dc.ReleaseHdc();
}
public void DrawTextRect(IDeviceContext dc, string text, Color foreColor, Color backColor, Rectangle bounds, TextFormatFlags flags)
{
if (string.IsNullOrEmpty(text))
{
return;
}
RECT rect = new RECT(bounds);
IntPtr hDc = dc.GetHdc();
try
{
int clr = ColorTranslator.ToWin32(foreColor);
int back = ColorTranslator.ToWin32(backColor);
NativeMethods.DrawTextRect(hDc, text, hFont, clr, back, ref rect, (int)flags);
}
finally
{
dc.ReleaseHdc();
}
}
public void DirectDraw(IDeviceContext dc, string text, Point pt)
{
if (string.IsNullOrEmpty(text))
{
return;
}
if (dc == null)
{
throw new ArgumentNullException("dc");
}
IntPtr hDc = dc.GetHdc();
try
{
NativeMethods.DrawTextDirect(hDc, text, hFont, Win32Color, pt.X, pt.Y);
}
finally
{
dc.ReleaseHdc();
}
}
public void DrawTextGlow(IDeviceContext dc, string text, Point pt, Color foreColor)
{
if (string.IsNullOrEmpty(text))
{
return;
}
if (dc == null)
{
throw new ArgumentNullException("dc");
}
IntPtr hDc = dc.GetHdc();
try
{
int clr1 = ColorTranslator.ToWin32(foreColor);
NativeMethods.DrawTextGlow(hDc, text, hFont, clr1, pt.X, pt.Y);
}
finally
{
dc.ReleaseHdc();
}
}
public void DrawText(IDeviceContext dc, string text, Rectangle bounds)
{
if (string.IsNullOrEmpty(text))
{
return;
}
if (dc == null)
{
throw new ArgumentNullException("dc");
}
IntPtr hDc = dc.GetHdc();
try
{
RECT rect = new RECT(bounds);
NativeMethods.DrawAlphaTextRect(hDc, text, hFont, Win32Color, ref rect, 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;
}
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);
}
/// <summary>
/// without render, only calc lines layout
/// </summary>
/// <param name="dev"></param>
public void CalcLines(IDeviceContext dev, int max_lines_to_calc)
{
//освобождаем имеющиеся строки
free_lines();
if (TextRegion != null)
{
TextRegion.Dispose();
}
TextRegion = new Region();
IntPtr hdc = dev.GetHdc();
IntPtr font_ptr = Font.ToHfont();
IntPtr old_font = NativeGdi.SelectObject(hdc, font_ptr);
uint old_align = NativeGdi.SetTextAlign(hdc, 0);
int line_height = (int)Math.Ceiling(Font.GetHeight());
IntPtr char_buffer = IntPtr.Zero;
bool EOF = false;
int chars_filled = 0;
int current_char_offset = 0;
int current_Y = 0;
int current_line_index = 0;
while (current_line_index < max_lines_to_calc)
{
OnFetchCharsToScreen
(current_char_offset,
true,
out char_buffer,
out chars_filled,
out EOF);
LineInfoSS new_line = new LineInfoSS();
new_line.ReferensePoint = new Point(Bounds.X, Bounds.Y + current_Y);
new_line.CharFirst = current_char_offset;
//обсчитываем
if (chars_filled != 0)
{
new_line.PrepareLayout
(hdc,
char_buffer,
chars_filled,
Bounds.Width);
}
//прибавляем счетчики
current_char_offset = current_char_offset + new_line.CharLength;
current_Y = current_Y + line_height;
current_line_index++;
lines_info.Add(new_line);
TextRegion.Union(new Rectangle(new_line.ReferensePoint, new_line.Extent));
//если стоит признак конца файла, выходим
if (EOF)
{
break;
}
}
font_ptr = NativeGdi.SelectObject(hdc, old_font);
NativeGdi.DeleteObject(font_ptr);
NativeGdi.SetTextAlign(hdc, old_align);
dev.ReleaseHdc();
}
public static Rectangle GetHighlightRectangle(IDeviceContext dc, string text, int highlightStart, int highlightLength, Font font, Rectangle bounds, TextFormatFlags flags = TextFormatFlags.SingleLine)
{
if ((flags & TextFormatFlags.SingleLine) == 0)
{
throw new InvalidOperationException("This method only handles single line highlights. Multiline text highlights may be composed of multiple rectangles.");
}
if (string.IsNullOrEmpty(text))
{
throw new ArgumentException("Text must not be null or empty.", "text");
}
if (highlightStart < 0)
{
throw new ArgumentOutOfRangeException("highlightStart", highlightLength, "Highlight length must be greater than or equal to zero.");
}
if (highlightLength <= 0)
{
throw new ArgumentOutOfRangeException("highlightLength", highlightLength, "Highlight length must be greater than zero.");
}
if (highlightLength > text.Length - highlightStart)
{
throw new ArgumentOutOfRangeException("highlightLength", highlightLength, "Highlight length must be less than or equal to the length of the text minus the highlight start.");
}
var drawTextParams = GetTextMargins(font, flags);
Size totalSize;
// Determine total size and adjust for cut-off highlight.
// We need access to the modified string in case it was trimmed.
// Unfortunately, TextFormatFlags.ModifyString can't be used with TextRenderer.MeasureText
// so we'll have to roll our own.
var hdc = dc.GetHdc();
try
{
var modifiedText = new StringBuilder(text);
var rectBounds = new RECT(0, 0, bounds.Width, bounds.Height);
var hFont = font.ToHfont();
try
{
var oldFont = Gdi32.SelectObject(hdc, hFont);
try
{
User32.DrawTextEx(hdc, modifiedText, modifiedText.Length, ref rectBounds, (flags & ~AlignFlags) | CalcRectFlag | TextFormatFlags.ModifyString, ref drawTextParams);
}
finally
{
Gdi32.SelectObject(hdc, oldFont);
}
}
finally
{
Gdi32.DeleteObject(hFont);
}
totalSize = new Size(rectBounds.Right - rectBounds.Left, rectBounds.Bottom - rectBounds.Top);
// drawTextParams.uiLengthDrawn may be equal to text.Length even if an ellipsis was applied
for (var i = 0; i < drawTextParams.uiLengthDrawn; i++)
{
if (modifiedText[i] != text[i])
{
var unchangedLength = i;
if (highlightStart > unchangedLength)
{
highlightStart = unchangedLength;
}
if (highlightStart + highlightLength > unchangedLength)
{
highlightLength = modifiedText.Length - highlightStart;
}
text = modifiedText.ToString();
break;
}
}
}
finally
{
dc.ReleaseHdc();
}
// Find the end of the highlight first rather than the beginning. This avoids having to explicitly deal with kerning.
// Kerning may move the first highlighted character closer to the previous character. As long as the two characters
// are measured together, kerning is taken into consideration.
// The rectangle extends to the full beginning of the highlighted text, even when kerning moves it.
var highlightXEnd = drawTextParams.iLeftMargin + TextRenderer.MeasureText(dc, text.Substring(0, highlightStart + highlightLength), font, bounds.Size, (flags & ~(PaddingFlags | AlignFlags | EllipsisFlags)) | TextFormatFlags.NoPadding).Width;
// We don't care about the kerning of the first character *following* the highlight. This way the highlight is inclusive on both ends.
// The rectangle extends to the full end of the highlighted text, regardless of how close the following character comes.
var highlightSize = TextRenderer.MeasureText(dc, text.Substring(highlightStart, highlightLength), font, bounds.Size, (flags & ~(PaddingFlags | AlignFlags | EllipsisFlags)) | TextFormatFlags.NoPadding);
var unalignedHighlightBounds = new Rectangle(bounds.X + highlightXEnd - highlightSize.Width, bounds.Y, highlightSize.Width, highlightSize.Height);
return(ApplyAlignment(unalignedHighlightBounds, bounds.Width - totalSize.Width, bounds.Height - totalSize.Height, flags));
}
public int FindPreviousLineStart(IDeviceContext dev)
{
//для обсчета строки будет нужен контекст
IntPtr hdc = dev.GetHdc();
IntPtr font_ptr = Font.ToHfont();
IntPtr old_font = NativeGdi.SelectObject(hdc, font_ptr);
uint old_align = NativeGdi.SetTextAlign(hdc, 0);
int line_height = (int)Math.Ceiling(Font.GetHeight());
IntPtr char_buffer = IntPtr.Zero;
bool EOF = false;
int chars_filled = 0;
int ret = 0;
//получаем буфер символов начиная от -max_chars_in_line
OnFetchCharsToScreen
(-max_chars_in_line,
false,
out char_buffer,
out chars_filled,
out EOF);
if (chars_filled <= 0)
{
//то есть и так находимся в начале
ret = 0;
}
else
{
//получаем ssa_sctruct
IntPtr ssa_scruct = NativeScript.ScriptStringAnalyseCall
(hdc,
char_buffer,
chars_filled,
SCRIPT_TABDEF.GetDefault());
//берем logical wodths
int[] widths = NativeScript.GetLogicalWidths(ssa_scruct);
//освобождаем ssa_scruct
NativeScript.ScriptStringFree(ref ssa_scruct);
//суммируем полученные ширины символов с конца, пока не превысим
//максимальную ширину или не встретим второй hard break
char current_char = '\0';
int current_width = 0;
int finding_ind = -1;
for (int i = chars_filled - 1; i >= 0; i--)
{
current_char = get_char_from_buffer(char_buffer, i);
current_width = current_width + widths[i];
//проверяем ширину
if (current_width > Bounds.Width)
{
finding_ind = i;
break;
}
//проверяем hard break (\n \r \r\n) начиная со второго шага
if (i != chars_filled - 1)
{
if (current_char == '\n')
{
if (((i - 1) >= 0) && (get_char_from_buffer(char_buffer, i - 1) == '\r'))
{
finding_ind = i;
break;
}
finding_ind = i;
break;
}
else if ((current_char == '\r') && (i < chars_filled - 2))
{
finding_ind = i;
break;
}
}
}
//finding_ind теперь соответствует концу предыщей строки
ret = -(chars_filled - finding_ind - 1);
}
font_ptr = NativeGdi.SelectObject(hdc, old_font);
NativeGdi.DeleteObject(font_ptr);
NativeGdi.SetTextAlign(hdc, old_align);
dev.ReleaseHdc();
return(ret);
}
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 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>
/// calc layout and render
/// </summary>
/// <param name="dev"></param>
public void UpdateArea(IDeviceContext dev)
//public void UpdateArea(Graphics g)
{
free_lines();
if (TextRegion != null)
{
TextRegion.Dispose();
}
TextRegion = new Region();
IntPtr hdc = dev.GetHdc();
//IntPtr hdc = g.GetHdc();
IntPtr font_ptr = Font.ToHfont();
//IntPtr font_ptr = font_ptr_cached;
IntPtr old_font = NativeGdi.SelectObject(hdc, font_ptr);
//Font hdc_font = Font.FromHfont(old_font);
uint old_align = NativeGdi.SetTextAlign(hdc, 0);
int line_height = (int)Math.Ceiling(Font.GetHeight());
IntPtr char_buffer = IntPtr.Zero;
int select_first = 0;
int select_last = 0;
int select_line_first = 0;
int select_line_last = 0;
OnFetchSelectionRange(out select_first, out select_last);
bool EOF = false;
int chars_filled = 0;
int current_char_offset = 0;
int current_Y = 0;
while (current_Y + line_height < Bounds.Height)
{
select_line_first = 0;
select_line_last = 0;
OnFetchCharsToScreen
(current_char_offset,
true,
out char_buffer,
out chars_filled,
out EOF);
LineInfoSS new_line = new LineInfoSS();
new_line.ReferensePoint = new Point(Bounds.X, Bounds.Y + current_Y);
new_line.CharFirst = current_char_offset;
//если буфер не пуст рисуем строку
if (chars_filled != 0)
{
new_line.PrepareLayout
(hdc,
char_buffer,
chars_filled,
Bounds.Width);
//пересчитываем selection
if ((select_first >= current_char_offset) && (select_first <= current_char_offset + new_line.CharLength - 1))
{
//начало selection попадает в строку
select_line_first = select_first - current_char_offset;
select_line_last = new_line.CharLength - 1;
}
if ((select_last >= current_char_offset) && (select_last <= current_char_offset + new_line.CharLength - 1))
{
//конец selection попадает в строку
select_line_last = select_last - current_char_offset;
}
if ((select_first <= current_char_offset) && (select_last >= current_char_offset + new_line.CharLength - 1))
{
//весь selection попадает в строку
select_line_first = select_first - current_char_offset;
select_line_last = new_line.CharLength - 1;
}
//и рисуем
new_line.Render(select_line_first, select_line_last);
}
//прибавляем счетчики
current_char_offset = current_char_offset + new_line.CharLength;
current_Y = current_Y + line_height;
lines_info.Add(new_line);
TextRegion.Union(new Rectangle(new_line.ReferensePoint, new_line.Extent));
//если стоит признак конца файла, выходим
if (EOF)
{
break;
}
}
font_ptr = NativeGdi.SelectObject(hdc, old_font);
NativeGdi.DeleteObject(font_ptr);
//NativeGdi.DeleteObject(old_font);
NativeGdi.SetTextAlign(hdc, old_align);
NativeGdi.GdiFlush(); //возможно не обязательно
dev.ReleaseHdc();
//g.ReleaseHdc(hdc);
}
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 ();
}
internal static void StretchImageWithOutMargin(IDeviceContext destImage, int destX, int destY, int destWidth, int destHeight, ImageWithDeviceContext srcImage, int srcY, int srcWidth, int srcHeight, Padding stretchExcludeMargin, byte opacity)
{
BlendFunction blend = BlendFunction.Default;
blend.SourceConstantAlpha = opacity;
IntPtr destDc = destImage.GetHdc();
if (stretchExcludeMargin.Left > 0)
{
NativeMethods.AlphaBlend(destDc, destX, destY + stretchExcludeMargin.Top, stretchExcludeMargin.Left, destHeight - (stretchExcludeMargin.Top + stretchExcludeMargin.Bottom), srcImage.Dc, 0, srcY + stretchExcludeMargin.Top, stretchExcludeMargin.Left, srcHeight - (stretchExcludeMargin.Top + stretchExcludeMargin.Bottom),
blend);
}
if (stretchExcludeMargin.Right > 0)
{
NativeMethods.AlphaBlend(destDc, destX + (destWidth - stretchExcludeMargin.Right), destY + stretchExcludeMargin.Top, stretchExcludeMargin.Right, destHeight - (stretchExcludeMargin.Bottom + stretchExcludeMargin.Top), srcImage.Dc, srcWidth - stretchExcludeMargin.Right, srcY + stretchExcludeMargin.Top, stretchExcludeMargin.Right, srcHeight - (stretchExcludeMargin.Bottom + stretchExcludeMargin.Top),
blend);
}
if (stretchExcludeMargin.Top > 0)
{
NativeMethods.AlphaBlend(destDc, destX + stretchExcludeMargin.Left, destY, destWidth - (stretchExcludeMargin.Left + stretchExcludeMargin.Right), stretchExcludeMargin.Top, srcImage.Dc, stretchExcludeMargin.Left, srcY, srcWidth - (stretchExcludeMargin.Left + stretchExcludeMargin.Right), stretchExcludeMargin.Top,
blend);
if (stretchExcludeMargin.Left > 0)
{
NativeMethods.AlphaBlend(destDc, destX, destY, stretchExcludeMargin.Left, stretchExcludeMargin.Top, srcImage.Dc, 0, srcY, stretchExcludeMargin.Left, stretchExcludeMargin.Top,
blend);
}
if (stretchExcludeMargin.Right > 0)
{
NativeMethods.AlphaBlend(destDc, (destWidth - stretchExcludeMargin.Right) + destX, destY, stretchExcludeMargin.Right, stretchExcludeMargin.Top, srcImage.Dc, srcWidth - stretchExcludeMargin.Right, srcY, stretchExcludeMargin.Right, stretchExcludeMargin.Top,
blend);
}
}
if (stretchExcludeMargin.Bottom > 0)
{
// WinAPI.AlphaBlend(DestDC, DestX, DestY + (DestHeight - stretchExcludeMargin.Bottom), DestWidth, stretchExcludeMargin.Bottom, srcImage.DC, 0, SrcY + (srcHeight - stretchExcludeMargin.Bottom), srcWidth, stretchExcludeMargin.Bottom,
// Blend);
NativeMethods.AlphaBlend(destDc, destX + stretchExcludeMargin.Left, destY + (destHeight - stretchExcludeMargin.Bottom),
destWidth - (stretchExcludeMargin.Left + stretchExcludeMargin.Right),
stretchExcludeMargin.Top,
srcImage.Dc,
stretchExcludeMargin.Left,
srcY + (srcHeight - stretchExcludeMargin.Bottom),
srcWidth - (stretchExcludeMargin.Left + stretchExcludeMargin.Right),
stretchExcludeMargin.Bottom,
blend);
if (stretchExcludeMargin.Left > 0)
{
NativeMethods.AlphaBlend(destDc, destX, destY + (destHeight - stretchExcludeMargin.Bottom), stretchExcludeMargin.Left, stretchExcludeMargin.Bottom, srcImage.Dc, 0, srcY + (srcHeight - stretchExcludeMargin.Bottom), stretchExcludeMargin.Left, stretchExcludeMargin.Bottom,
blend);
}
if (stretchExcludeMargin.Right > 0)
{
NativeMethods.AlphaBlend(destDc, (destWidth - stretchExcludeMargin.Right) + destX, destY + (destHeight - stretchExcludeMargin.Bottom), stretchExcludeMargin.Right, stretchExcludeMargin.Bottom, srcImage.Dc, srcWidth - stretchExcludeMargin.Right, srcY + (srcHeight - stretchExcludeMargin.Bottom), stretchExcludeMargin.Right, stretchExcludeMargin.Bottom,
blend);
}
}
NativeMethods.AlphaBlend(destDc, destX + stretchExcludeMargin.Left, destY + stretchExcludeMargin.Top, destWidth - (stretchExcludeMargin.Left + stretchExcludeMargin.Right), destHeight - (stretchExcludeMargin.Top + stretchExcludeMargin.Bottom), srcImage.Dc, stretchExcludeMargin.Left, srcY + stretchExcludeMargin.Top, srcWidth - (stretchExcludeMargin.Left + stretchExcludeMargin.Right), srcHeight - (stretchExcludeMargin.Top + stretchExcludeMargin.Bottom),
blend);
destImage.ReleaseHdc();
}
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;
}
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 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 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;
}
