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=begin
**
** Copyright (C) 2004-2005 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
** this file. Please review the following information to ensure GNU
** General Public Licensing requirements will be met:
** http://www.trolltech.com/products/qt/opensource.html
**
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://www.trolltech.com/products/qt/licensing.html or contact the
** sales department at sales@trolltech.com.
**
** 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
=end
require 'glwidget.rb'
class MainWindow < Qt::MainWindow
slots 'renderIntoPixmap()',
'grabFrameBuffer()',
'clearPixmap()',
'about()'
def initialize(parent = nil)
super
@centralWidget = Qt::Widget.new
self.centralWidget = @centralWidget
@glWidget = GLWidget.new(self)
@pixmapLabel = Qt::Label.new
@glWidgetArea = Qt::ScrollArea.new do |a|
a.widget = @glWidget
a.widgetResizable = true
a.horizontalScrollBarPolicy = Qt::ScrollBarAlwaysOff
a.verticalScrollBarPolicy = Qt::ScrollBarAlwaysOff
a.setSizePolicy(Qt::SizePolicy::Ignored, Qt::SizePolicy::Ignored)
a.setMinimumSize(50, 50)
end
@pixmapLabelArea = Qt::ScrollArea.new do |l|
l.widget = @pixmapLabel
l.setSizePolicy(Qt::SizePolicy::Ignored, Qt::SizePolicy::Ignored)
l.setMinimumSize(50, 50)
end
@xSlider = createSlider(SIGNAL('xRotationChanged(int)'),
SLOT('setXRotation(int)'))
@ySlider = createSlider(SIGNAL('yRotationChanged(int)'),
SLOT('setYRotation(int)'))
@zSlider = createSlider(SIGNAL('zRotationChanged(int)'),
SLOT('setZRotation(int)'))
createActions()
createMenus()
@centralWidget.layout = Qt::GridLayout.new do |c|
c.addWidget(@glWidgetArea, 0, 0)
c.addWidget(@pixmapLabelArea, 0, 1)
c.addWidget(@xSlider, 1, 0, 1, 2)
c.addWidget(@ySlider, 2, 0, 1, 2)
c.addWidget(@zSlider, 3, 0, 1, 2)
end
@xSlider.value = 15 * 16
@ySlider.value = 345 * 16
@zSlider.value = 0 * 16
setWindowTitle(tr("Grabber"))
resize(400, 300)
end
def renderIntoPixmap()
size = getSize()
if size.valid?
pixmap = @glWidget.renderPixmap(size.width(), size.height())
setPixmap(pixmap)
end
end
def grabFrameBuffer()
image = @glWidget.grabFrameBuffer()
setPixmap(Qt::Pixmap.fromImage(image))
end
def clearPixmap()
setPixmap(Qt::Pixmap.new)
end
def about()
Qt::MessageBox.about(self, tr("About Grabber"),
tr("The <b>Grabber</b> example demonstrates two approaches for " +
"rendering OpenGL into a Qt pixmap."))
end
def createActions()
@renderIntoPixmapAct = Qt::Action.new(tr("&Render into Pixmap..."), self)
@renderIntoPixmapAct.shortcut = Qt::KeySequence.new( tr("Ctrl+R") )
connect(@renderIntoPixmapAct, SIGNAL('triggered()'),
self, SLOT('renderIntoPixmap()'))
@grabFrameBufferAct = Qt::Action.new(tr("&Grab Frame Buffer"), self)
@grabFrameBufferAct.shortcut = Qt::KeySequence.new( tr("Ctrl+G") )
connect(@grabFrameBufferAct, SIGNAL('triggered()'),
self, SLOT('grabFrameBuffer()'))
@clearPixmapAct = Qt::Action.new(tr("&Clear Pixmap"), self)
@clearPixmapAct.shortcut = Qt::KeySequence.new( tr("Ctrl+L") )
connect(@clearPixmapAct, SIGNAL('triggered()'), self, SLOT('clearPixmap()'))
@exitAct = Qt::Action.new(tr("E&xit"), self)
@exitAct.shortcut = Qt::KeySequence.new( tr("Ctrl+Q") )
connect(@exitAct, SIGNAL('triggered()'), self, SLOT('close()'))
@aboutAct = Qt::Action.new(tr("&About"), self)
connect(@aboutAct, SIGNAL('triggered()'), self, SLOT('about()'))
@aboutQtAct = Qt::Action.new(tr("About &Qt"), self)
connect(@aboutQtAct, SIGNAL('triggered()'), $qApp, SLOT('aboutQt()'))
end
def createMenus()
@fileMenu = menuBar().addMenu(tr("&File"))
@fileMenu.addAction(@renderIntoPixmapAct)
@fileMenu.addAction(@grabFrameBufferAct)
@fileMenu.addAction(@clearPixmapAct)
@fileMenu.addSeparator()
@fileMenu.addAction(@exitAct)
@helpMenu = menuBar().addMenu(tr("&Help"))
@helpMenu.addAction(@aboutAct)
@helpMenu.addAction(@aboutQtAct)
end
def createSlider(changedSignal, setterSlot)
slider = Qt::Slider.new(Qt::Horizontal) do |s|
s.range = 0..(360 * 16)
s.singleStep = 16
s.pageStep = 15 * 16
s.tickInterval = 15 * 16
s.tickPosition = Qt::Slider::TicksRight
end
connect(slider, SIGNAL('valueChanged(int)'), @glWidget, setterSlot)
connect(@glWidget, changedSignal, slider, SLOT('setValue(int)'))
return slider
end
def setPixmap(pixmap)
@pixmapLabel.pixmap = pixmap
size = pixmap.size()
if size - Qt::Size.new(1, 0) == @pixmapLabelArea.maximumViewportSize
size -= Qt::Size.new(1, 0)
end
@pixmapLabel.resize(size)
end
def getSize()
ok = Qt::Boolean.new
text = Qt::InputDialog.getText(self, tr("Grabber"),
tr("Enter pixmap size:"),
Qt::LineEdit::Normal,
tr("%d x %d" % [@glWidget.width, @glWidget.height]),
ok)
if !ok
return Qt::Size.new
end
if text =~ /([0-9]+) *x *([0-9]+)/
width = $1.to_i
height = $2.to_i
if width > 0 && width < 2048 && height > 0 && height < 2048
return Qt::Size.new(width, height)
end
end
return @glWidget.size()
end
end
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