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SimpleTextFormatter - add draw version with alignment

This commit is contained in:
and3md 2017-07-17 17:05:54 +02:00
parent 3816e39155
commit 3fa0ed5c00
1 changed files with 27 additions and 0 deletions
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27
src/dlangui/graphics/fonts.d
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@ -462,6 +462,8 @@ alias FontRef = Ref!Font;
/// helper to split text into several lines and draw it
struct SimpleTextFormatter {
dstring[] _lines;
int[] _linesWidths;
int _maxLineWidth;
int _tabSize;
int _tabOffset;
uint _textFlags;
@ -472,6 +474,7 @@ struct SimpleTextFormatter {
_textFlags = textFlags;
Point sz;
_lines.length = 0;
_linesWidths.length = 0;
int lineHeight = fnt.height;
if (text.length == 0) {
sz.y = lineHeight;
@ -495,6 +498,7 @@ struct SimpleTextFormatter {
if (sz.x < lineWidth)
sz.x = lineWidth;
_lines ~= line;
_linesWidths ~= lineWidth;
if (i == charsMeasured) // end of text reached
break;
@ -532,6 +536,7 @@ struct SimpleTextFormatter {
if (sz.x < lineWidth)
sz.x = lineWidth;
_lines ~= line;
_linesWidths ~= lineWidth;
// check max lines constraint
if (maxLines && _lines.length >= maxLines) // max lines reached
@ -548,6 +553,7 @@ struct SimpleTextFormatter {
}
prevChar = ch;
}
_maxLineWidth = sz.x;
return sz;
}
/// draw formatted text
@ -558,6 +564,27 @@ struct SimpleTextFormatter {
y += lineHeight;
}
}
/// draw horizontaly aligned formatted text
void draw(DrawBuf buf, int x, int y, FontRef fnt, uint color, ubyte alignment) {
int lineHeight = fnt.height;
dstring line;
int lineWidth;
for (int i = 0 ; i < _lines.length ; i++) {
line = _lines[i];
lineWidth = _linesWidths[i];
if ((alignment & Align.HCenter) == Align.HCenter) {
fnt.drawText(buf, x + (_maxLineWidth - lineWidth) / 2, y, line, color, _tabSize, _tabOffset, _textFlags);
}
else if (alignment & Align.Left) {
fnt.drawText(buf, x, y, line, color, _tabSize, _tabOffset, _textFlags);
}
else if (alignment & Align.Right) {
fnt.drawText(buf, x + _maxLineWidth - lineWidth, y, line, color, _tabSize, _tabOffset, _textFlags);
}
y += lineHeight;
}
}
}