Exemplo n.º 1
0
 private RichText(string s, RichTextParameters parameters, IList parts)
 {
     myParameters = parameters;
     myString     = s;
     myParts      = new ArrayList(parts.Count);
     for (int i = 0; i < parts.Count; i++)
     {
         myParts.Add(((RichString)parts[i]).Clone());
     }
 }
Exemplo n.º 2
0
        /// <summary>
        /// Creates a new rich text block
        /// </summary>
        /// <param name="s">Text content</param>
        /// <param name="parameters">Parameters to use</param>
        public RichText(string s, RichTextParameters parameters)
        {
            myParameters = parameters;

            if (s != null && s.Length > 0)
            {
                myString = s;
                myParts.Add(new RichString(0, s.Length, parameters.Style, this));
            }
        }
Exemplo n.º 3
0
        /// <summary>
        /// Draws the formatted string on a given graphics
        /// </summary>
        /// <param name="hdc">The device context to draw the string in.</param>
        /// <param name="parameters">Text formatting parameters</param>
        /// <exception cref="ArgumentNullException"><i>g</i> is null</exception>
        /// <exception cref="ArgumentNullException"><i>font</i> is null</exception>
        public int Draw(IntPtr hdc, Rectangle rect, RichTextParameters parameters)
        {
            Font hFont = GetParametrizedFont(parameters);
            RECT rc    = new RECT();

            rc.left   = rect.Left;
            rc.top    = rect.Top;
            rc.bottom = rect.Bottom;

            RectangleF bounds;

            IntPtr         oldFont    = Win32Declarations.SelectObject(hdc, ourFontCache.GetHFont(hFont));
            int            oldColor   = Win32Declarations.SetTextColor(hdc, Win32Declarations.ColorToRGB(myStyle.ForegroundColor));
            int            oldBkColor = Win32Declarations.SetBkColor(hdc, Win32Declarations.ColorToRGB(myStyle.BackgroundColor));
            BackgroundMode oldBkMode  = Win32Declarations.SetBkMode(hdc, myStyle.BackgroundColor == Color.Transparent ? BackgroundMode.TRANSPARENT : BackgroundMode.OPAQUE);

            Win32Declarations.DrawText(hdc, PartText, PartText.Length, ref rc, DrawTextFormatFlags.DT_CALCRECT | DrawTextFormatFlags.DT_SINGLELINE | DrawTextFormatFlags.DT_NOPREFIX | DrawTextFormatFlags.DT_VCENTER | DrawTextFormatFlags.DT_NOCLIP);
            if (rc.bottom > rect.Bottom)
            {
                rc.bottom = rect.Bottom;
            }
            if (rc.right > rect.Right)
            {
                rc.right = rect.Right;
            }
            bounds = new RectangleF(rc.left, rc.top, rc.right - rc.left, rc.bottom - rc.top);

            Win32Declarations.DrawText(hdc, PartText, PartText.Length, ref rc, DrawTextFormatFlags.DT_SINGLELINE | DrawTextFormatFlags.DT_NOPREFIX | DrawTextFormatFlags.DT_VCENTER | DrawTextFormatFlags.DT_NOCLIP);

            Win32Declarations.SetBkMode(hdc, oldBkMode);
            Win32Declarations.SetBkColor(hdc, oldBkColor);
            Win32Declarations.SetTextColor(hdc, oldColor);
            Win32Declarations.SelectObject(hdc, oldFont);

            switch (myStyle.Effect)
            {
            case TextStyle.EffectStyle.StrikeOut:
                StrikeOut(hdc, bounds);
                break;

            case TextStyle.EffectStyle.StraightUnderline:
                UnderlineStraight(hdc, bounds);
                break;

            case TextStyle.EffectStyle.WeavyUnderline:
                UnderlineWeavy(hdc, bounds);
                break;
            }

            return(rc.right - rc.left);
        }
Exemplo n.º 4
0
        /// <summary>
        /// Gets size of the string in the given graphics
        /// </summary>
        /// <param name="hdc">The device context to calculate size in</param>
        /// <param name="parameters">Formatting parameters to use</param>
        /// <returns>Size of the string when drawn in a given graphics</returns>
        /// <exception cref="ArgumentNullException"><i>g</i> is null.</exception>
        public SizeF GetSize(IntPtr hdc, RichTextParameters parameters)
        {
            Font hFont = GetParametrizedFont(parameters);
            RECT rc    = new RECT();

            rc.left = 0;
            rc.top  = 0;

            IntPtr oldFont = Win32Declarations.SelectObject(hdc, ourFontCache.GetHFont(hFont));

            Win32Declarations.DrawText(hdc, PartText, PartText.Length, ref rc, DrawTextFormatFlags.DT_CALCRECT | DrawTextFormatFlags.DT_SINGLELINE | DrawTextFormatFlags.DT_NOPREFIX);
            Win32Declarations.SelectObject(hdc, oldFont);

            return(new SizeF(rc.right - rc.left, rc.bottom - rc.top));
        }
Exemplo n.º 5
0
        public int GetSymbolByOffset(int x, RichTextParameters parameters, IntPtr hdc)
        {
            if (x < 0)
            {
                return(-1);
            }

            Font hFont = GetParametrizedFont(parameters);
            RECT rc    = new RECT();

            rc.left = 0;
            rc.top  = 0;

            int currentX = 0;

            IntPtr oldFont = Win32Declarations.SelectObject(hdc, ourFontCache.GetHFont(hFont));

            try
            {
                for (int i = 0; i < PartText.Length; i++)
                {
                    Win32Declarations.DrawText(hdc, PartText.Substring(i, 1), 1, ref rc, DrawTextFormatFlags.DT_CALCRECT | DrawTextFormatFlags.DT_SINGLELINE | DrawTextFormatFlags.DT_NOPREFIX | DrawTextFormatFlags.DT_NOCLIP);
                    currentX += rc.right - rc.left;

                    if (currentX > x)
                    {
                        return(i);
                    }
                }

                return(-1);
            }
            finally
            {
                Win32Declarations.SelectObject(hdc, oldFont);
            }
        }
Exemplo n.º 6
0
 /// <summary>
 /// Returns parametrized font
 /// </summary>
 /// <param name="parameters">Formatting parameters to use</param>
 private Font GetParametrizedFont(RichTextParameters parameters)
 {
     return(ourFontCache.GetFont(parameters.Font, myStyle.FontStyle));
 }