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Fixed handling of multiple newlines.

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Removed unused code.
This commit is contained in:
the_fiddler 2008-11-18 19:27:26 +00:00
parent fbbc836394
commit ebc25d1660
1 changed files with 23 additions and 99 deletions
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120
Source/Utilities/Fonts/TextureFont.cs
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@ -208,37 +208,10 @@ using System.Text.RegularExpressions;
public void MeasureString(string str, out float width, out float height, bool accountForOverhangs) public void MeasureString(string str, out float width, out float height, bool accountForOverhangs)
{ {
System.Drawing.StringFormat format = accountForOverhangs ? System.Drawing.StringFormat.GenericDefault : System.Drawing.StringFormat.GenericTypographic; System.Drawing.StringFormat format = accountForOverhangs ? System.Drawing.StringFormat.GenericDefault : System.Drawing.StringFormat.GenericTypographic;
//format.FormatFlags |= StringFormatFlags.MeasureTrailingSpaces;
System.Drawing.SizeF size = gfx.MeasureString(str, font, 16384, format); System.Drawing.SizeF size = gfx.MeasureString(str, font, 16384, format);
height = size.Height; height = size.Height;
width = size.Width; width = size.Width;
//width = height = 0;
//RectangleF rect = new RectangleF(0, 0, 0, 0);
//ICollection<RectangleF> ranges = new List<RectangleF>();
//MeasureCharacterRanges(gfx, str, font, ref rect, format, ref ranges);
//foreach (RectangleF range in ranges)
//{
// width += range.Width;
// height = range.Height > height ?range.Height : height;
//}
// width = 0;
// height = 0;
// int i = 0;
// foreach (char c in str)
// {
// if (c != '\n' && c != '\r')
// {
// SizeF size = gfx.MeasureString(str.Substring(i, 1), font, 16384, System.Drawing.StringFormat.GenericTypographic);
// width += size.Width == 0 ? font.SizeInPoints * 0.5f : size.Width;
// if (height < size.Height)
// height = size.Height;
// }
// ++i;
// }
} }
#endregion #endregion
@ -345,8 +318,16 @@ using System.Text.RegularExpressions;
RectangleF layoutRect = new RectangleF(PointF.Empty, bounds); RectangleF layoutRect = new RectangleF(PointF.Empty, bounds);
int height = 0; int height = 0;
// Todo: This allocates memory, see below for possible solutions.
string[] lines = text.Split(newline_characters, StringSplitOptions.RemoveEmptyEntries); // It seems that the mere presence of \n and \r characters
// is enough for Mono to botch the layout (even if these
// characters are not processed.) We'll need to find a
// different way to perform layout on Mono, probably
// through Pango.
// Todo: This workaround allocates memory.
//if (Configuration.RunningOnMono)
{
string[] lines = text.Replace("\r", String.Empty).Split(newline_characters);
foreach (string s in lines) foreach (string s in lines)
{ {
ranges.AddRange(GetCharExtents( ranges.AddRange(GetCharExtents(
@ -354,19 +335,7 @@ using System.Text.RegularExpressions;
native_graphics, native_font, native_string_format)); native_graphics, native_font, native_string_format));
height += font.Height; height += font.Height;
} }
}
// It seems that the mere presence of \n and \r characters
// is enough for Mono to botch the layout (even if these
// characters are not processed.) We'll need to find a
// different way to perform layout on Mono, probably
// through Pango.
//foreach (LineDelimiter d in SplitLines(text))
//{
// ranges.AddRange(ProcessLine(
// text, height, d.Start, d.Length, layoutRect,
// native_graphics, native_font, native_string_format));
// height += font.Height;
//}
return new RectangleF(ranges[0].X, ranges[0].Y, ranges[ranges.Count - 1].Right, ranges[ranges.Count - 1].Bottom); return new RectangleF(ranges[0].X, ranges[0].Y, ranges[ranges.Count - 1].Right, ranges[ranges.Count - 1].Bottom);
} }
@ -468,54 +437,6 @@ using System.Text.RegularExpressions;
#endregion #endregion
#region struct LineDelimiter
// Denotes the start and end of a line of text.
struct LineDelimiter
{
public int Start, Length;
public int End { get { return Start + Length; } }
public LineDelimiter(int start, int length)
{
Start = start;
Length = length;
}
}
#endregion
#region SplitLines
// Splits the specified string into substrings separated by the
// \n and \r characters.
//IEnumerable<LineDelimiter> SplitLines(string text)
//{
// if (text == null)
// throw new ArgumentNullException("text");
// if (text.Length == 0)
// yield break;
// int segment_start = 0;
// int i = 0;
// for (; i < text.Length; i++)
// {
// if (text[i] == '\n' || text[i] == '\r')
// {
// if (i - segment_start > 0)
// yield return new LineDelimiter() { Start = segment_start, Length = i - segment_start };
// segment_start = i + 1;
// }
// }
// if (i - segment_start > 0)
// yield return new LineDelimiter() { Start = segment_start, Length = i - segment_start };
//}
#endregion
#region GetCharExtents #region GetCharExtents
// Gets the bounds of each character in a line of text. // Gets the bounds of each character in a line of text.
@ -527,11 +448,11 @@ using System.Text.RegularExpressions;
int line_end = line_start + line_length; int line_end = line_start + line_length;
while (line_start < line_end) while (line_start < line_end)
{ {
if (text[line_start] == '\n' || text[line_start] == '\r') //if (text[line_start] == '\n' || text[line_start] == '\r')
{ //{
line_start++; // line_start++;
continue; // continue;
} //}
int num_characters = (line_end - line_start) > GdiPlus.MaxMeasurableCharacterRanges ? int num_characters = (line_end - line_start) > GdiPlus.MaxMeasurableCharacterRanges ?
GdiPlus.MaxMeasurableCharacterRanges : GdiPlus.MaxMeasurableCharacterRanges :
@ -545,19 +466,22 @@ using System.Text.RegularExpressions;
IntPtr region; IntPtr region;
status = GdiPlus.CreateRegion(out region); status = GdiPlus.CreateRegion(out region);
regions[i] = region; regions[i] = region;
if (status != 0) Debug.Assert(status == 0, String.Format("GDI+ error: {0}", status));
Debug.Print("GDI+ error: {0}", status);
} }
GdiPlus.SetStringFormatMeasurableCharacterRanges(native_string_format, num_characters, characterRanges); status = GdiPlus.SetStringFormatMeasurableCharacterRanges(native_string_format, num_characters, characterRanges);
Debug.Assert(status == 0, String.Format("GDI+ error: {0}", status));
status = GdiPlus.MeasureCharacterRanges(native_graphics, text, text.Length, status = GdiPlus.MeasureCharacterRanges(native_graphics, text, text.Length,
native_font, ref layoutRect, native_string_format, num_characters, regions); native_font, ref layoutRect, native_string_format, num_characters, regions);
Debug.Assert(status == 0, String.Format("GDI+ error: {0}", status));
for (int i = 0; i < num_characters; i++) for (int i = 0; i < num_characters; i++)
{ {
GdiPlus.GetRegionBounds(regions[i], native_graphics, ref rect); GdiPlus.GetRegionBounds(regions[i], native_graphics, ref rect);
Debug.Assert(status == 0, String.Format("GDI+ error: {0}", status));
GdiPlus.DeleteRegion(regions[i]); GdiPlus.DeleteRegion(regions[i]);
Debug.Assert(status == 0, String.Format("GDI+ error: {0}", status));
rect.Y += height; rect.Y += height;
yield return rect; yield return rect;