private static void SetFormat(LineTag tag, Font font, Color color, Color back_color, TextPositioning text_position,
float char_offset, bool visible, FormatSpecified specified)
{
if ((FormatSpecified.Font & specified) == FormatSpecified.Font)
{
tag.Font = font;
}
if ((FormatSpecified.Color & specified) == FormatSpecified.Color)
{
tag.color = color;
}
if ((FormatSpecified.BackColor & specified) == FormatSpecified.BackColor)
{
tag.back_color = back_color;
}
if ((FormatSpecified.TextPosition & specified) == FormatSpecified.TextPosition)
{
tag.TextPosition = text_position;
}
if ((FormatSpecified.CharOffset & specified) == FormatSpecified.CharOffset)
{
tag.CharOffset = char_offset;
}
if ((FormatSpecified.Visibility & specified) == FormatSpecified.Visibility)
{
tag.Visible = visible;
}
// Console.WriteLine ("setting format: {0} {1} new color {2}", color.Color, specified, tag.color.Color);
}
/// <summary>Format area of document in specified font and color</summary>
/// <param name="start_pos">1-based start position on start_line</param>
/// <param name="end_pos">1-based end position on end_line </param>
internal void FormatText (Line start_line, int start_pos, Line end_line, int end_pos, Font font,
Color color, Color back_color, FormatSpecified specified)
{
Line l;
// First, format the first line
if (start_line != end_line) {
// First line
LineTag.FormatText(start_line, start_pos, start_line.text.Length - start_pos + 1, font, color, back_color, specified);
// Format last line
LineTag.FormatText(end_line, 1, end_pos, font, color, back_color, specified);
// Now all the lines inbetween
for (int i = start_line.line_no + 1; i < end_line.line_no; i++) {
l = GetLine(i);
LineTag.FormatText(l, 1, l.text.Length, font, color, back_color, specified);
}
} else {
// Special case, single line
LineTag.FormatText(start_line, start_pos, end_pos - start_pos, font, color, back_color, specified);
if ((end_pos - start_pos) == 0 && CaretTag.Length != 0)
CaretTag = CaretTag.Next;
}
}
private static void SetFormat (LineTag tag, Font font, Color color, Color back_color, FormatSpecified specified)
{
if ((FormatSpecified.Font & specified) == FormatSpecified.Font) {
tag.Font = font;
}
if ((FormatSpecified.Color & specified) == FormatSpecified.Color)
tag.color = color;
if ((FormatSpecified.BackColor & specified) == FormatSpecified.BackColor) {
tag.back_color = back_color;
}
// Console.WriteLine ("setting format: {0} {1} new color {2}", color.Color, specified, tag.color.Color);
}
/// <summary>Applies 'font' and 'brush' to characters starting at 'start' for 'length' chars;
/// Removes any previous tags overlapping the same area;
/// returns true if lineheight has changed</summary>
/// <param name="formatStart">1-based character position on line</param>
public static bool FormatText (Line line, int formatStart, int length, Font font, Color color, Color backColor, FormatSpecified specified)
{
LineTag tag;
LineTag start_tag;
LineTag end_tag;
int end;
bool retval = false; // Assume line-height doesn't change
// Too simple?
if (((FormatSpecified.Font & specified) == FormatSpecified.Font) && font.Height != line.height)
retval = true;
line.recalc = true; // This forces recalculation of the line in RecalculateDocument
// A little sanity, not sure if it's needed, might be able to remove for speed
if (length > line.text.Length)
length = line.text.Length;
tag = line.tags;
end = formatStart + length;
// Common special case
if ((formatStart == 1) && (length == tag.Length)) {
SetFormat (tag, font, color, backColor, specified);
return retval;
}
// empty selection style at begining of line means
// we only need one new tag
if (formatStart == 1 && length == 0) {
line.tags.Break (1);
SetFormat (line.tags, font, color, backColor, specified);
return retval;
}
start_tag = FindTag (line, formatStart - 1);
// we are at an empty tag already!
// e.g. [Tag 0 - "He"][Tag 1 = 0 length][Tag 2 "llo world"]
// Find Tag will return tag 0 at position 3, but we should just
// use the empty tag after..
if (start_tag.End == formatStart && length == 0 && start_tag.Next != null && start_tag.Next.Length == 0) {
SetFormat (start_tag.Next, font, color, backColor, specified);
return retval;
}
// if we are at the end of a tag, we want to move to the next tag
while (start_tag.End == formatStart && start_tag.Next != null)
start_tag = start_tag.Next;
tag = start_tag.Break (formatStart);
// empty selection style at end of line - its the only situation
// where the rest of the tag would be empty, since we moved to the
// begining of next non empty tag
if (tag.Length == 0) {
SetFormat (tag, font, color, backColor, specified);
return retval;
}
// empty - so we just create another tag for
// after our new (now) empty one..
if (length == 0) {
tag.Break (formatStart);
SetFormat (tag, font, color, backColor, specified);
return retval;
}
while (tag != null && tag.End <= end) {
SetFormat (tag, font, color, backColor, specified);
tag = tag.next;
}
// did the last tag conveniently fit?
if (tag != null && tag.End == end)
return retval;
/// Now do the last tag
end_tag = FindTag (line, end-1);
if (end_tag != null) {
end_tag.Break (end);
SetFormat (end_tag, font, color, backColor, specified);
}
return retval;
}
private static void SetFormat(LineTag tag, Font font, Color_ color, Color_ back_color, FormatSpecified specified)
{
if ((FormatSpecified.Font & specified) == FormatSpecified.Font)
{
tag.Font = font;
}
if ((FormatSpecified.Color & specified) == FormatSpecified.Color)
{
tag.color = color;
}
if ((FormatSpecified.BackColor & specified) == FormatSpecified.BackColor)
{
tag.back_color = back_color;
}
// Console.WriteLine ("setting format: {0} {1} new Color_ {2}", color.Color, specified, tag.color.Color);
}
/// <summary>Applies 'font' and 'brush' to characters starting at 'start' for 'length' chars;
/// Removes any previous tags overlapping the same area;
/// returns true if lineheight has changed</summary>
/// <param name="formatStart">1-based character position on line</param>
public static bool FormatText(Line line, int formatStart, int length, Font font, Color_ color, Color_ backColor, FormatSpecified specified)
{
LineTag tag;
LineTag start_tag;
LineTag end_tag;
int end;
bool retval = false; // Assume line-height doesn't change
// Too simple?
if (((FormatSpecified.Font & specified) == FormatSpecified.Font) && font.Height != line.height)
{
retval = true;
}
line.recalc = true; // This forces recalculation of the line in RecalculateDocument
// A little sanity, not sure if it's needed, might be able to remove for speed
if (length > line.text.Length)
{
length = line.text.Length;
}
tag = line.tags;
end = formatStart + length;
// Common special case
if ((formatStart == 1) && (length == tag.Length))
{
SetFormat(tag, font, color, backColor, specified);
return(retval);
}
// empty selection style at begining of line means
// we only need one new tag
if (formatStart == 1 && length == 0)
{
line.tags.Break(1);
SetFormat(line.tags, font, color, backColor, specified);
return(retval);
}
start_tag = FindTag(line, formatStart - 1);
// we are at an empty tag already!
// e.g. [Tag 0 - "He"][Tag 1 = 0 length][Tag 2 "llo world"]
// Find Tag will return tag 0 at position 3, but we should just
// use the empty tag after..
if (start_tag.End == formatStart && length == 0 && start_tag.Next != null && start_tag.Next.Length == 0)
{
SetFormat(start_tag.Next, font, color, backColor, specified);
return(retval);
}
// if we are at the end of a tag, we want to move to the next tag
while (start_tag.End == formatStart && start_tag.Next != null)
{
start_tag = start_tag.Next;
}
tag = start_tag.Break(formatStart);
// empty selection style at end of line - its the only situation
// where the rest of the tag would be empty, since we moved to the
// begining of next non empty tag
if (tag.Length == 0)
{
SetFormat(tag, font, color, backColor, specified);
return(retval);
}
// empty - so we just create another tag for
// after our new (now) empty one..
if (length == 0)
{
tag.Break(formatStart);
SetFormat(tag, font, color, backColor, specified);
return(retval);
}
while (tag != null && tag.End <= end)
{
SetFormat(tag, font, color, backColor, specified);
tag = tag.next;
}
// did the last tag conveniently fit?
if (tag != null && tag.End == end)
{
return(retval);
}
/// Now do the last tag
end_tag = FindTag(line, end - 1);
if (end_tag != null)
{
end_tag.Break(end);
SetFormat(end_tag, font, color, backColor, specified);
}
return(retval);
}
private static void SetFormat(LineTag tag, Font font, Color color, Color back_color, FormatSpecified specified)
{
SetFormat(tag, font, color, back_color, TextPositioning.Normal, 0, true, specified);
}
public static bool FormatText(Line line, int formatStart, int length, Font font, Color color, Color backColor, FormatSpecified specified)
{
return(FormatText(line, formatStart, length, font, color, backColor, TextPositioning.Normal, 0, true, specified));
}