void GlyphArrangement::addFittedText (const Font& f,
const String& text,
const float x, const float y,
const float width, const float height,
Justification layout,
int maximumLines,
float minimumHorizontalScale)
{
if (minimumHorizontalScale == 0.0f)
minimumHorizontalScale = Font::getDefaultMinimumHorizontalScaleFactor();
// doesn't make much sense if this is outside a sensible range of 0.5 to 1.0
jassert (minimumHorizontalScale > 0 && minimumHorizontalScale <= 1.0f);
if (text.containsAnyOf ("\r\n"))
{
addLinesWithLineBreaks (text, f, x, y, width, height, layout);
}
else
{
const int startIndex = glyphs.size();
const String trimmed (text.trim());
addLineOfText (f, trimmed, x, y);
const int numGlyphs = glyphs.size() - startIndex;
if (numGlyphs > 0)
{
const float lineWidth = glyphs.getReference (glyphs.size() - 1).getRight()
- glyphs.getReference (startIndex).getLeft();
if (lineWidth > 0)
{
if (lineWidth * minimumHorizontalScale < width)
{
if (lineWidth > width)
stretchRangeOfGlyphs (startIndex, numGlyphs, width / lineWidth);
justifyGlyphs (startIndex, numGlyphs, x, y, width, height, layout);
}
else if (maximumLines <= 1)
{
fitLineIntoSpace (startIndex, numGlyphs, x, y, width, height,
f, layout, minimumHorizontalScale);
}
else
{
splitLines (trimmed, f, startIndex, x, y, width, height,
maximumLines, lineWidth, layout, minimumHorizontalScale);
}
}
}
}
}
void GlyphArrangement::splitLines (const String& text, Font font, int startIndex,
float x, float y, float width, float height, int maximumLines,
float lineWidth, Justification layout, float minimumHorizontalScale)
{
const int length = text.length();
const int originalStartIndex = startIndex;
int numLines = 1;
if (length <= 12 && ! text.containsAnyOf (" -\t\r\n"))
maximumLines = 1;
maximumLines = jmin (maximumLines, length);
while (numLines < maximumLines)
{
++numLines;
const float newFontHeight = height / (float) numLines;
if (newFontHeight < font.getHeight())
{
font.setHeight (jmax (8.0f, newFontHeight));
removeRangeOfGlyphs (startIndex, -1);
addLineOfText (font, text, x, y);
lineWidth = glyphs.getReference (glyphs.size() - 1).getRight()
- glyphs.getReference (startIndex).getLeft();
}
// Try to estimate the point at which there are enough lines to fit the text,
// allowing for unevenness in the lengths due to differently sized words.
const float lineLengthUnevennessAllowance = 80.0f;
if (numLines > (lineWidth + lineLengthUnevennessAllowance) / width || newFontHeight < 8.0f)
break;
}
if (numLines < 1)
numLines = 1;
float lineY = y;
float widthPerLine = lineWidth / numLines;
for (int line = 0; line < numLines; ++line)
{
int i = startIndex;
float lineStartX = glyphs.getReference (startIndex).getLeft();
if (line == numLines - 1)
{
widthPerLine = width;
i = glyphs.size();
}
else
{
while (i < glyphs.size())
{
lineWidth = (glyphs.getReference (i).getRight() - lineStartX);
if (lineWidth > widthPerLine)
{
// got to a point where the line's too long, so skip forward to find a
// good place to break it..
const int searchStartIndex = i;
while (i < glyphs.size())
{
if ((glyphs.getReference (i).getRight() - lineStartX) * minimumHorizontalScale < width)
{
if (glyphs.getReference (i).isWhitespace()
|| glyphs.getReference (i).getCharacter() == '-')
{
++i;
break;
}
}
else
{
// can't find a suitable break, so try looking backwards..
i = searchStartIndex;
for (int back = 1; back < jmin (7, i - startIndex - 1); ++back)
{
if (glyphs.getReference (i - back).isWhitespace()
|| glyphs.getReference (i - back).getCharacter() == '-')
{
i -= back - 1;
break;
}
}
break;
}
++i;
}
break;
}
++i;
}
int wsStart = i;
while (wsStart > 0 && glyphs.getReference (wsStart - 1).isWhitespace())
--wsStart;
int wsEnd = i;
while (wsEnd < glyphs.size() && glyphs.getReference (wsEnd).isWhitespace())
++wsEnd;
removeRangeOfGlyphs (wsStart, wsEnd - wsStart);
i = jmax (wsStart, startIndex + 1);
}
i -= fitLineIntoSpace (startIndex, i - startIndex,
x, lineY, width, font.getHeight(), font,
layout.getOnlyHorizontalFlags() | Justification::verticallyCentred,
minimumHorizontalScale);
startIndex = i;
lineY += font.getHeight();
if (startIndex >= glyphs.size())
break;
}
justifyGlyphs (originalStartIndex, glyphs.size() - originalStartIndex,
x, y, width, height, layout.getFlags() & ~Justification::horizontallyJustified);
}
void GlyphArrangement::addJustifiedText (const Font& font,
const String& text,
float x, float y,
const float maxLineWidth,
Justification horizontalLayout)
{
int lineStartIndex = glyphs.size();
addLineOfText (font, text, x, y);
const float originalY = y;
while (lineStartIndex < glyphs.size())
{
int i = lineStartIndex;
if (glyphs.getReference(i).getCharacter() != '\n'
&& glyphs.getReference(i).getCharacter() != '\r')
++i;
const float lineMaxX = glyphs.getReference (lineStartIndex).getLeft() + maxLineWidth;
int lastWordBreakIndex = -1;
while (i < glyphs.size())
{
const PositionedGlyph& pg = glyphs.getReference (i);
const juce_wchar c = pg.getCharacter();
if (c == '\r' || c == '\n')
{
++i;
if (c == '\r' && i < glyphs.size()
&& glyphs.getReference(i).getCharacter() == '\n')
++i;
break;
}
if (pg.isWhitespace())
{
lastWordBreakIndex = i + 1;
}
else if (pg.getRight() - 0.0001f >= lineMaxX)
{
if (lastWordBreakIndex >= 0)
i = lastWordBreakIndex;
break;
}
++i;
}
const float currentLineStartX = glyphs.getReference (lineStartIndex).getLeft();
float currentLineEndX = currentLineStartX;
for (int j = i; --j >= lineStartIndex;)
{
if (! glyphs.getReference (j).isWhitespace())
{
currentLineEndX = glyphs.getReference (j).getRight();
break;
}
}
float deltaX = 0.0f;
if (horizontalLayout.testFlags (Justification::horizontallyJustified))
spreadOutLine (lineStartIndex, i - lineStartIndex, maxLineWidth);
else if (horizontalLayout.testFlags (Justification::horizontallyCentred))
deltaX = (maxLineWidth - (currentLineEndX - currentLineStartX)) * 0.5f;
else if (horizontalLayout.testFlags (Justification::right))
deltaX = maxLineWidth - (currentLineEndX - currentLineStartX);
moveRangeOfGlyphs (lineStartIndex, i - lineStartIndex,
x + deltaX - currentLineStartX, y - originalY);
lineStartIndex = i;
y += font.getHeight();
}
}
void GlyphArrangement::addFittedText (const Font& f,
const String& text,
const float x, const float y,
const float width, const float height,
const Justification& layout,
int maximumLines,
const float minimumHorizontalScale)
{
// doesn't make much sense if this is outside a sensible range of 0.5 to 1.0
jassert (minimumHorizontalScale > 0 && minimumHorizontalScale <= 1.0f);
if (text.containsAnyOf ("\r\n"))
{
GlyphArrangement ga;
ga.addJustifiedText (f, text, x, y, width, layout);
const Rectangle<float> bb (ga.getBoundingBox (0, -1, false));
float dy = y - bb.getY();
if (layout.testFlags (Justification::verticallyCentred))
dy += (height - bb.getHeight()) * 0.5f;
else if (layout.testFlags (Justification::bottom))
dy += height - bb.getHeight();
ga.moveRangeOfGlyphs (0, -1, 0.0f, dy);
glyphs.ensureStorageAllocated (glyphs.size() + ga.glyphs.size());
for (int i = 0; i < ga.glyphs.size(); ++i)
glyphs.add (ga.glyphs.getUnchecked (i));
ga.glyphs.clear (false);
return;
}
int startIndex = glyphs.size();
addLineOfText (f, text.trim(), x, y);
if (glyphs.size() > startIndex)
{
float lineWidth = glyphs.getUnchecked (glyphs.size() - 1)->getRight()
- glyphs.getUnchecked (startIndex)->getLeft();
if (lineWidth <= 0)
return;
if (lineWidth * minimumHorizontalScale < width)
{
if (lineWidth > width)
stretchRangeOfGlyphs (startIndex, glyphs.size() - startIndex,
width / lineWidth);
justifyGlyphs (startIndex, glyphs.size() - startIndex,
x, y, width, height, layout);
}
else if (maximumLines <= 1)
{
fitLineIntoSpace (startIndex, glyphs.size() - startIndex,
x, y, width, height, f, layout, minimumHorizontalScale);
}
else
{
Font font (f);
String txt (text.trim());
const int length = txt.length();
const int originalStartIndex = startIndex;
int numLines = 1;
if (length <= 12 && ! txt.containsAnyOf (" -\t\r\n"))
maximumLines = 1;
maximumLines = jmin (maximumLines, length);
while (numLines < maximumLines)
{
++numLines;
const float newFontHeight = height / (float) numLines;
if (newFontHeight < font.getHeight())
{
font.setHeight (jmax (8.0f, newFontHeight));
removeRangeOfGlyphs (startIndex, -1);
addLineOfText (font, txt, x, y);
lineWidth = glyphs.getUnchecked (glyphs.size() - 1)->getRight()
- glyphs.getUnchecked (startIndex)->getLeft();
}
if (numLines > lineWidth / width || newFontHeight < 8.0f)
break;
}
if (numLines < 1)
numLines = 1;
float lineY = y;
float widthPerLine = lineWidth / numLines;
int lastLineStartIndex = 0;
for (int line = 0; line < numLines; ++line)
{
int i = startIndex;
lastLineStartIndex = i;
float lineStartX = glyphs.getUnchecked (startIndex)->getLeft();
if (line == numLines - 1)
{
widthPerLine = width;
i = glyphs.size();
}
else
{
while (i < glyphs.size())
{
lineWidth = (glyphs.getUnchecked (i)->getRight() - lineStartX);
if (lineWidth > widthPerLine)
{
// got to a point where the line's too long, so skip forward to find a
// good place to break it..
const int searchStartIndex = i;
while (i < glyphs.size())
{
if ((glyphs.getUnchecked (i)->getRight() - lineStartX) * minimumHorizontalScale < width)
{
if (glyphs.getUnchecked (i)->isWhitespace()
|| glyphs.getUnchecked (i)->getCharacter() == '-')
{
++i;
break;
}
}
else
{
// can't find a suitable break, so try looking backwards..
i = searchStartIndex;
for (int back = 1; back < jmin (5, i - startIndex - 1); ++back)
{
if (glyphs.getUnchecked (i - back)->isWhitespace()
|| glyphs.getUnchecked (i - back)->getCharacter() == '-')
{
i -= back - 1;
break;
}
}
break;
}
++i;
}
break;
}
++i;
}
int wsStart = i;
while (wsStart > 0 && glyphs.getUnchecked (wsStart - 1)->isWhitespace())
--wsStart;
int wsEnd = i;
while (wsEnd < glyphs.size() && glyphs.getUnchecked (wsEnd)->isWhitespace())
++wsEnd;
removeRangeOfGlyphs (wsStart, wsEnd - wsStart);
i = jmax (wsStart, startIndex + 1);
}
i -= fitLineIntoSpace (startIndex, i - startIndex,
x, lineY, width, font.getHeight(), font,
layout.getOnlyHorizontalFlags() | Justification::verticallyCentred,
minimumHorizontalScale);
startIndex = i;
lineY += font.getHeight();
if (startIndex >= glyphs.size())
break;
}
justifyGlyphs (originalStartIndex, glyphs.size() - originalStartIndex,
x, y, width, height, layout.getFlags() & ~Justification::horizontallyJustified);
}
}
}
