summaryrefslogtreecommitdiffstats
path: root/qtruby/rubylib/examples/qt-examples/fonts/simple-qfont-demo/viewer.rb
blob: d9c16a627be25cdc2cd7ad3682c50afbc0471fe0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
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