class TextSprite(object):
_layout_width = None # Width to layout text to
_text_width = 0 # Calculated width of text
_text_height = 0 # Calculated height of text (bottom descender to top
# ascender)
_dirty = False # Flag if require layout
def __init__(self, font, text, x=0, y=0, z=0, color=(1,1,1,1)):
self._dirty = True
self.font = font
self._text = text
self.color = color
self.x = x
self.y = y
self.leading = 0
def _clean(self):
'''Resolve changed layout'''
'''
# Each 'line' in 'glyph_lines' is a list of Glyph objects. Do
# line wrapping now.
glyph_lines = []
if self._layout_width is None:
for line in self.text.split('\n'):
glyph_lines.append((line, self.font.get_glyphs(self.text)))
else:
text = self.text + ' ' # Need the ' ' to always flush line.
while text and text != ' ':
line = self.font.get_glyphs_for_width(text, self._layout_width)
glyph_lines.append((text[:len(line)], line))
text = text[len(line):]
if text and text[0] == '\n':
text = text[1:]
# Create interleaved array and figure out state changes.
line_height = self.font.ascent - self.font.descent + self.leading
y = 0
self._text_width = 0
self.strings = []
for text, glyphs in glyph_lines:
string = GlyphString(text, glyphs, 0, y)
self._text_width = max(self._text_width, string.width)
y -= line_height
self.strings.append(string)
self._text_height = -y
'''
text = self._text + ' '
glyphs = self.font.get_glyphs(text)
self._glyph_string = GlyphString(text, glyphs)
self.lines = []
i = 0
if self._layout_width is None:
self._text_width = 0
while '\n' in text[i:]:
end = text.index('\n', i)
self.lines.append((i, end))
self._text_width = max(self._text_width,
self._glyph_string.get_subwidth(i, end))
i = end + 1
end = len(text)
if end != i:
self.lines.append((i, end))
self._text_width = max(self._text_width,
self._glyph_string.get_subwidth(i, end))
else:
bp = self._glyph_string.get_break_index(i, self._layout_width)
while i < len(text) and bp > i:
if text[bp-1] == '\n':
self.lines.append((i, bp - 1))
else:
self.lines.append((i, bp))
i = bp
bp = self._glyph_string.get_break_index(i, self._layout_width)
if i < len(text) - 1:
self.lines.append((i, len(text)))
self.line_height = self.font.ascent - self.font.descent + self.leading
self._text_height = self.line_height * len(self.lines)
self._dirty = False
def draw(self):
if self._dirty:
self._clean()
glPushAttrib(GL_CURRENT_BIT | GL_ENABLE_BIT)
glEnable(GL_TEXTURE_2D)
glColor4f(*self.color)
glPushMatrix()
glTranslatef(self.x, self.y, 0)
for start, end in self.lines:
self._glyph_string.draw(start, end)
glTranslatef(0, -self.line_height, 0)
glPopMatrix()
glPopAttrib()
def get_width(self):
if self._dirty:
self._clean()
if self._layout_width:
return self._layout_width
return self._text_width
def set_width(self, width):
self._layout_width = width
self._dirty = True
width = property(get_width, set_width)
def get_height(self):
if self._dirty:
self._clean()
return self._text_height
height = property(get_height)
def set_text(self, text):
self._text = text
self._dirty = True
text = property(lambda self: self._text, set_text)
class TextSprite:
_layout_width = None # Width to layout text to
_text_width = 0 # Calculated width of text
_text_height = 0 # Calculated height of text (bottom descender to top
# ascender)
_dirty = False # Flag if require layout
def __init__(self, font, text, x=0, y=0, z=0, color=(1, 1, 1, 1)):
self._dirty = True
self.font = font
self._text = text
self.color = color
self.x = x
self.y = y
self.leading = 0
def _clean(self):
"""Resolve changed layout"""
"""
# Each 'line' in 'glyph_lines' is a list of Glyph objects. Do
# line wrapping now.
glyph_lines = list()
if self._layout_width is None:
for line in self.text.split('\n'):
glyph_lines.append((line, self.font.get_glyphs(self.text)))
else:
text = self.text + ' ' # Need the ' ' to always flush line.
while text and text != ' ':
line = self.font.get_glyphs_for_width(text, self._layout_width)
glyph_lines.append((text[:len(line)], line))
text = text[len(line):]
if text and text[0] == '\n':
text = text[1:]
# Create interleaved array and figure out state changes.
line_height = self.font.ascent - self.font.descent + self.leading
y = 0
self._text_width = 0
self.strings = list()
for text, glyphs in glyph_lines:
string = GlyphString(text, glyphs, 0, y)
self._text_width = max(self._text_width, string.width)
y -= line_height
self.strings.append(string)
self._text_height = -y
"""
text = self._text + ' '
glyphs = self.font.get_glyphs(text)
self._glyph_string = GlyphString(text, glyphs)
self.lines = list()
i = 0
if self._layout_width is None:
self._text_width = 0
while '\n' in text[i:]:
end = text.index('\n', i)
self.lines.append((i, end))
self._text_width = max(self._text_width,
self._glyph_string.get_subwidth(i, end))
i = end + 1
end = len(text)
if end != i:
self.lines.append((i, end))
self._text_width = max(self._text_width,
self._glyph_string.get_subwidth(i, end))
else:
bp = self._glyph_string.get_break_index(i, self._layout_width)
while i < len(text) and bp > i:
if text[bp - 1] == '\n':
self.lines.append((i, bp - 1))
else:
self.lines.append((i, bp))
i = bp
bp = self._glyph_string.get_break_index(i, self._layout_width)
if i < len(text) - 1:
self.lines.append((i, len(text)))
self.line_height = self.font.ascent - self.font.descent + self.leading
self._text_height = self.line_height * len(self.lines)
self._dirty = False
def draw(self):
if self._dirty:
self._clean()
glPushAttrib(GL_CURRENT_BIT | GL_ENABLE_BIT)
glEnable(GL_TEXTURE_2D)
glColor4f(*self.color)
glPushMatrix()
glTranslatef(self.x, self.y, 0)
for start, end in self.lines:
self._glyph_string.draw(start, end)
glTranslatef(0, -self.line_height, 0)
glPopMatrix()
glPopAttrib()
def get_width(self):
if self._dirty:
self._clean()
if self._layout_width:
return self._layout_width
return self._text_width
def set_width(self, width):
self._layout_width = width
self._dirty = True
width = property(get_width, set_width)
def get_height(self):
if self._dirty:
self._clean()
return self._text_height
height = property(get_height)
def set_text(self, text):
self._text = text
self._dirty = True
text = property(lambda self: self._text, set_text)
