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class Viewer < Qt::Widget
slots 'setDefault()', 'setSansSerif()', 'setItalics()'
def initialize
super
setFontSubstitutions
codec = Qt::TextCodec::codecForName("utf8")
# Shouldn't 'pack("U*")' for UTF-8 work here? - Richard
# The 'U' option packs each element into two bytes and doesn't work
# The 'c' option packs them into a single byte and does work
greeting_heb = codec.toUnicode([0327, 0251, 0327, 0234, 0327, 0225, 0327, 0235].pack("C*"))
greeting_ru = codec.toUnicode([0320, 0227, 0320, 0264, 0321, 0200, 0320, 0260, 0320, 0262, 0321, 0201, 0321, 0202, 0320, 0262, 0321, 0203, 0320, 0271, 0321, 0202, 0320, 0265].pack("C*"))
greeting_en = 'Hello'
@greetings = Qt::TextView.new(self, 'textview')
@greetings.setText(
greeting_en + "\n" +
greeting_ru + "\n" +
greeting_heb)
@fontInfo = Qt::TextView.new(self, 'fontinfo')
setDefault
@defaultButton = Qt::PushButton.new('Default', self, 'pushbutton1')
@defaultButton.setFont(Qt::Font.new('times'))
connect(@defaultButton, SIGNAL('clicked()'), self, SLOT('setDefault()'))
@sansSerifButton = Qt::PushButton.new('Sans Serif', self, 'pushbutton2')
@sansSerifButton.setFont(Qt::Font.new('Helvetica', 12))
connect(@sansSerifButton, SIGNAL('clicked()'), self, SLOT('setSansSerif()'))
@italicsButton = Qt::PushButton.new('Italics', self, 'pushbutton1')
@italicsButton.setFont(Qt::Font.new('lucida', 12, Qt::Font.Bold, true))
connect(@italicsButton, SIGNAL('clicked()'), self, SLOT('setItalics()'))
layout
end
def setDefault
font = Qt::Font.new('Bavaria')
font.setPointSize(24)
font.setWeight(Qt::Font.Bold)
font.setUnderline(true)
@greetings.setFont(font)
showFontInfo(font)
end
def setSansSerif
font = Qt::Font.new('Newyork', 18)
font.setStyleHint(Qt::Font.SansSerif)
@greetings.setFont(font)
showFontInfo(font)
end
def setItalics
font = Qt::Font.new('Tokyo')
font.setPointSize(32)
font.setWeight(Qt::Font.Bold)
font.setItalic(true)
@greetings.setFont(font)
showFontInfo(font)
end
def setFontSubstitutions
substitutes = Array.new
substitutes.push('Times')
substitutes.push('Mincho')
substitutes.push('Arabic Newspaper')
substitutes.push('crox')
Qt::Font.insertSubstitutions('Bavaria', substitutes)
Qt::Font.insertSubstitution('Tokyo', 'Lucida')
end
def layout
textViewContainer = Qt::HBoxLayout.new
textViewContainer.addWidget(@greetings)
textViewContainer.addWidget(@fontInfo)
buttonContainer = Qt::HBoxLayout.new
buttonContainer.addWidget(@defaultButton)
buttonContainer.addWidget(@sansSerifButton)
buttonContainer.addWidget(@italicsButton)
maxButtonHeight = @defaultButton.height
if (@sansSerifButton.height > maxButtonHeight)
maxButtonHeight = @sansSerifButton.height
end
if (@italicsButton.height > maxButtonHeight)
maxButtonHeight = @italicsButton.height
end
@defaultButton.setFixedHeight(maxButtonHeight)
@sansSerifButton.setFixedHeight(maxButtonHeight)
@italicsButton.setFixedHeight(maxButtonHeight)
container = Qt::VBoxLayout.new(self)
container.addLayout(textViewContainer)
container.addLayout(buttonContainer)
resize(700, 250)
end
def showFontInfo (font)
info = Qt::FontInfo.new(font)
messageText =
'Font requested: "' +
font.family + '" ' +
font.pointSize.to_s + 'pt<BR>' +
'Font used: "' +
info.family.to_s + '" ' +
info.pointSize.to_s + 'pt<P>'
substitutions = Qt::Font.substitutes(font.family)
unless substitutions.size == 0
messageText = messageText + 'The following substitutions exist for ' +
font.family + ':<UL>'
substitutions.each {|x|
messageText = messageText + '<LI>"' + x + '"'
}
messageText = messageText + '</UL>'
else
messageText = messageText + 'No substitutions exist for ' + font.family + '.'
end
@fontInfo.setText(messageText)
end
end
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