Class: CharacterWidget

Inherits:
Qt::Widget show all
Defined in:
ext/ruby/qtruby/examples/widgets/charactermap/characterwidget.rb

Overview

** ** Copyright © 2005-2005 Trolltech AS. All rights reserved. ** ** This file is part of the example classes of the Qt Toolkit. ** ** This file may be used under the terms of the GNU General Public ** License version 2.0 as published by the Free Software Foundation ** and appearing in the file LICENSE.GPL included in the packaging of ** self file. Please review the following information to ensure GNU ** General Public Licensing requirements will be met: ** www.trolltech.com/products/qt/opensource.html ** ** If you are unsure which license is appropriate for your use, please ** review the following information: ** www.trolltech.com/products/qt/licensing.html or contact the ** sales department at [email protected]. ** ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. **

** Translated to QtRuby by Richard Dale

Instance Method Summary collapse

Methods inherited from Qt::Widget

#raise

Methods inherited from Qt::Base

#%, #&, #*, #**, #+, #-, #-@, #/, #<, #<<, #<=, #==, #>, #>=, #>>, #QCOMPARE, #QEXPECT_FAIL, #QFAIL, #QSKIP, #QTEST, #QVERIFY, #QVERIFY2, #QWARN, #^, ancestors, #is_a?, #methods, private_slots, #protected_methods, #public_methods, q_classinfo, q_signal, q_slot, signals, #singleton_methods, slots, #|, #~

Constructor Details

#initialize(parent = nil) ⇒ CharacterWidget

Returns a new instance of CharacterWidget.



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# File 'ext/ruby/qtruby/examples/widgets/charactermap/characterwidget.rb', line 31

def initialize(parent = nil)
    super(parent)
    @lastKey = -1
    @displayFont = Qt::Font.new
    setMouseTracking(true)
end

Instance Method Details

#mouseMoveEvent(event) ⇒ Object 



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# File 'ext/ruby/qtruby/examples/widgets/charactermap/characterwidget.rb', line 55

def mouseMoveEvent(event)
    widgetPosition = mapFromGlobal(event.globalPos())
    key = (widgetPosition.y()/24)*32 + widgetPosition.x()/24
    Qt::ToolTip.showText(event.globalPos(), key.to_s, self)
end

#mousePressEvent(event) ⇒ Object 



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# File 'ext/ruby/qtruby/examples/widgets/charactermap/characterwidget.rb', line 61

def mousePressEvent(event)
    if event.button() == Qt::LeftButton
        @lastKey = (event.y()/24)*32 + event.x()/24
        if Qt::Char.new(@lastKey).category() != Qt::Char::NoCategory
            emit characterSelected(Qt::Char.new(@lastKey).to_s)
        end
        update()
    else
        super
    end
end

#paintEvent(event) ⇒ Object 



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# File 'ext/ruby/qtruby/examples/widgets/charactermap/characterwidget.rb', line 73

def paintEvent(event)
    painter = Qt::Painter.new(self)
    painter.fillRect(event.rect(), Qt::Brush.new(Qt::white))
    painter.font = @displayFont

    redrawRect = event.rect()
    beginRow = redrawRect.top()/24
    endRow = redrawRect.bottom()/24
    beginColumn = redrawRect.left()/24
    endColumn = redrawRect.right()/24

    painter.pen = Qt::Color.new(Qt::gray)
    (beginRow..endRow).each do |row|
        (beginColumn..endColumn).each do |column|
            painter.drawRect(column*24, row*24, 24, 24)
        end
    end

    fontMetrics = Qt::FontMetrics.new(@displayFont)
    painter.pen = Qt::Color.new(Qt::black)
    (beginRow..endRow).each do |row|
        (beginColumn..endColumn).each do |column|

            key = row*32 + column
            painter.setClipRect(column*24, row*24, 24, 24)

            if key == @lastKey
                painter.fillRect(column*24, row*24, 24, 24, Qt::Brush.new(Qt::red))
            end

            painter.drawText(   column*24 + 12 - fontMetrics.width(Qt::Char.new(key))/2,
                                row*24 + 4 + fontMetrics.ascent(),
                                Qt::Char.new(key).to_s )
        end
    end
    painter.end
end

#sizeHint ⇒ Object 



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# File 'ext/ruby/qtruby/examples/widgets/charactermap/characterwidget.rb', line 51

def sizeHint()
    return Qt::Size.new(32*24, (65536/32)*24)
end

#updateFont(fontFamily) ⇒ Object 



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# File 'ext/ruby/qtruby/examples/widgets/charactermap/characterwidget.rb', line 38

def updateFont(fontFamily)
    @displayFont.family = fontFamily
    @displayFont.pixelSize = 16
    update()
end

#updateStyle(fontStyle) ⇒ Object 



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# File 'ext/ruby/qtruby/examples/widgets/charactermap/characterwidget.rb', line 44

def updateStyle(fontStyle)
    fontDatabase = Qt::FontDatabase.new
    @displayFont = fontDatabase.font(@displayFont.family(), fontStyle, 12)
    @displayFont.pixelSize = 16
    update()
end