private void FuriganaLabel_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left && !selectingText && !textIsSelected)
{
selectingText = true;
startPos = e.Location;
}
else if (textIsSelected)
{
startPos = Point.Empty;
curPos = Point.Empty;
textIsSelected = false;
prevSelectedText = "";
SelectedText = "";
Invalidate();
SelectedTextChangedEvent?.Invoke("");
}
}
private void Draw(Graphics g, Font font_name, string[] words, string[] furigana)
{
var f_word = new Font(font_name.FontFamily, 12);
var f_furi = new Font(font_name.FontFamily, 8.5f);
int x_pos = 3;
int y_pos = 3;
Brush TxtBrush = new SolidBrush(ForeColor);
Brush highlightTxtBrush = SystemBrushes.HighlightText;
for (int i = 0; i < words.Length; i++)
{
var sz_word = g.MeasureString(words[i], f_word);
var sz_furi = g.MeasureString(furigana[i], f_furi);
var fmt = new StringFormat()
{
FormatFlags = StringFormatFlags.DirectionVertical,
};
var characterRanges = new CharacterRange[words[i].Length];
for (int j = 0; j < words[i].Length; j++)
{
characterRanges[j] = new CharacterRange(j, 1);
}
fmt.SetMeasurableCharacterRanges(characterRanges);
var sz_c_word = g.MeasureCharacterRanges(words[i], f_word, new RectangleF(x_pos, y_pos + sz_furi.Height, sz_word.Width, sz_word.Height), fmt);
if (words[i].All(a => a < 128) | furigana[i] != words[i])
{
g.DrawString(furigana[i], f_furi, TxtBrush, (int)sz_c_word[0].GetBounds(g).X, y_pos);
}
if (words[i].All(a => a >= 128))
{
for (int j = 0; j < sz_c_word.Length; j++)
{
var bnds = sz_c_word[j].GetBounds(g);
var brush = TxtBrush;
if (textIsSelected | selectingText)
{
if (Math.Min(startPos.X, curPos.X) <= bnds.X + bnds.Width / 4 && Math.Max(curPos.X, startPos.X) >= bnds.X + (bnds.Width * 3) / 4 && Math.Min(startPos.Y, curPos.Y) <= bnds.Y + bnds.Height / 2 && Math.Max(curPos.Y, startPos.Y) >= bnds.Y + (bnds.Height * 2) / 4)
{
brush = highlightTxtBrush;
g.FillRectangle(SystemBrushes.Highlight, bnds);
SelectedText += words[i][j];
}
}
g.DrawString(words[i][j].ToString(), f_word, brush, bnds);
}
}
x_pos += (int)Math.Max(sz_word.Width, sz_furi.Width);
if (x_pos >= this.Width)
{
x_pos = 0;
y_pos += (int)(sz_furi.Height + sz_word.Height + 3);
}
}
if (SelectedText != prevSelectedText)
{
SelectedTextChangedEvent?.Invoke(SelectedText);
}
}