def font(self, text_style):
device_font = text_style.fontfacename in LIBERATION_FONT_MAP
try:
if device_font:
face = self.font_map[text_style.fontfacename]
else:
face = self.face_map[text_style.fontfacename]
except KeyError: # Bad fontfacename field in LRF
face = self.font_map['Dutch801 Rm BT Roman']
sz = text_style.fontsize
wt = text_style.fontweight
style = text_style.fontstyle
font = (
face,
wt,
style,
sz,
)
if font in self.cache:
rfont = self.cache[font]
else:
italic = font[2] == QFont.Style.StyleItalic
rfont = QFont(font[0], font[3], font[1], italic)
rfont.setPixelSize(font[3])
rfont.setBold(wt >= 69)
self.cache[font] = rfont
qfont = rfont
if text_style.emplinetype != 'none':
qfont = QFont(rfont)
qfont.setOverline(text_style.emplineposition == 'before')
qfont.setUnderline(text_style.emplineposition == 'after')
return qfont
def generate_masthead(title,
output_path=None,
width=600,
height=60,
as_qimage=False,
font_family=None):
init_environment()
font_family = font_family or cprefs[
'title_font_family'] or 'Liberation Serif'
img = QImage(width, height, QImage.Format.Format_ARGB32)
img.fill(Qt.GlobalColor.white)
p = QPainter(img)
p.setRenderHints(QPainter.RenderHint.Antialiasing
| QPainter.RenderHint.TextAntialiasing)
f = QFont(font_family)
f.setStyleStrategy(QFont.StyleStrategy.PreferAntialias)
f.setPixelSize((height * 3) // 4), f.setBold(True)
p.setFont(f)
p.drawText(img.rect(),
Qt.AlignmentFlag.AlignLeft | Qt.AlignmentFlag.AlignVCenter,
sanitize(title))
p.end()
if as_qimage:
return img
data = pixmap_to_data(img)
if output_path is None:
return data
with open(output_path, 'wb') as f:
f.write(data)
def message_image(text, width=500, height=400, font_size=20):
init_environment()
img = QImage(width, height, QImage.Format.Format_ARGB32)
img.fill(Qt.GlobalColor.white)
p = QPainter(img)
f = QFont()
f.setPixelSize(font_size)
p.setFont(f)
r = img.rect().adjusted(10, 10, -10, -10)
p.drawText(r, Qt.AlignmentFlag.AlignJustify | Qt.AlignmentFlag.AlignVCenter | Qt.TextFlag.TextWordWrap, text)
p.end()
return pixmap_to_data(img)
def populate(self, phrase, ts, process_space=True):
phrase_pos = 0
processed = False
matches = self.__class__.whitespace.finditer(phrase)
font = QFont(ts.font)
if self.valign is not None:
font.setPixelSize(font.pixelSize() / 1.5)
fm = QFontMetrics(font)
single_space_width = fm.width(' ')
height, descent = fm.height(), fm.descent()
for match in matches:
processed = True
left, right = match.span()
if not process_space:
right = left
space_width = single_space_width * (right - left)
word = phrase[phrase_pos:left]
width = fm.width(word)
if self.current_width + width < self.line_length:
self.commit(word, width, height, descent, ts, font)
if space_width > 0 and self.current_width + space_width < self.line_length:
self.add_space(space_width)
phrase_pos = right
continue
# Word doesn't fit on line
if self.hyphenate and len(word) > 3:
tokens = hyphenate_word(word)
for i in range(len(tokens) - 2, -1, -1):
word = ''.join(tokens[0:i + 1]) + '-'
width = fm.width(word)
if self.current_width + width < self.line_length:
self.commit(word, width, height, descent, ts, font)
return phrase_pos + len(word) - 1, True
if self.current_width < 5: # Force hyphenation as word is longer than line
for i in range(len(word) - 5, 0, -5):
part = word[:i] + '-'
width = fm.width(part)
if self.current_width + width < self.line_length:
self.commit(part, width, height, descent, ts, font)
return phrase_pos + len(part) - 1, True
# Failed to add word.
return phrase_pos, True
if not processed:
return self.populate(phrase + ' ', ts, False)
return phrase_pos, False
def layout_text(prefs, img, title, subtitle, footer, max_height, style):
width = img.width() - 2 * style.hmargin
title, subtitle, footer = title, subtitle, footer
title_font = QFont(prefs.title_font_family or 'Liberation Serif')
title_font.setPixelSize(prefs.title_font_size)
title_font.setStyleStrategy(QFont.StyleStrategy.PreferAntialias)
title_block = Block(title, width, title_font, img, max_height, style.TITLE_ALIGN)
title_block.position = style.hmargin, style.vmargin
subtitle_block = Block()
if subtitle:
subtitle_font = QFont(prefs.subtitle_font_family or 'Liberation Sans')
subtitle_font.setPixelSize(prefs.subtitle_font_size)
subtitle_font.setStyleStrategy(QFont.StyleStrategy.PreferAntialias)
gap = 2 * title_block.leading
mh = max_height - title_block.height - gap
subtitle_block = Block(subtitle, width, subtitle_font, img, mh, style.SUBTITLE_ALIGN)
subtitle_block.position = style.hmargin, title_block.position.y + title_block.height + gap
footer_font = QFont(prefs.footer_font_family or 'Liberation Serif')
footer_font.setStyleStrategy(QFont.StyleStrategy.PreferAntialias)
footer_font.setPixelSize(prefs.footer_font_size)
footer_block = Block(footer, width, footer_font, img, max_height, style.FOOTER_ALIGN)
footer_block.position = style.hmargin, img.height() - style.vmargin - footer_block.height
return title_block, subtitle_block, footer_block