diff options
Diffstat (limited to 'qtruby/rubylib/tutorial/t11')
-rw-r--r-- | qtruby/rubylib/tutorial/t11/cannon.rb | 137 | ||||
-rw-r--r-- | qtruby/rubylib/tutorial/t11/lcdrange.rb | 35 | ||||
-rwxr-xr-x | qtruby/rubylib/tutorial/t11/t11.rb | 67 |
3 files changed, 239 insertions, 0 deletions
diff --git a/qtruby/rubylib/tutorial/t11/cannon.rb b/qtruby/rubylib/tutorial/t11/cannon.rb new file mode 100644 index 00000000..e9446b02 --- /dev/null +++ b/qtruby/rubylib/tutorial/t11/cannon.rb @@ -0,0 +1,137 @@ +include Math +require 'Qt' + +class CannonField < Qt::Widget + + signals 'angleChanged(int)', 'forceChanged(int)' + slots 'setAngle(int)', 'setForce(int)', 'shoot()', 'moveShot()' + + def initialize(parent, name) + super + @ang = 45 + @f = 0 + @timerCount = 0; + @autoShootTimer = Qt::Timer.new( self, 'movement handler' ) + connect( @autoShootTimer, SIGNAL('timeout()'), + self, SLOT('moveShot()') ); + @shoot_ang = 0 + @shoot_f = 0 + setPalette( Qt::Palette.new( Qt::Color.new( 250, 250, 200) ) ) + @barrelRect = Qt::Rect.new(33, -4, 15, 8) + end + + def setAngle( degrees ) + if degrees < 5 + degrees = 5 + elsif degrees > 70 + degrees = 70 + end + if @ang == degrees + return + end + @ang = degrees + repaint( cannonRect(), false ) + emit angleChanged( @ang ) + end + + def setForce( newton ) + if newton < 0 + newton = 0 + end + if @f == newton + return + end + @f = newton + emit forceChanged( @f ) + end + + def shoot() + if @autoShootTimer.isActive() + return + end; + @timerCount = 0 + @shoot_ang = @ang + @shoot_f = @f + @autoShootTimer.start( 50 ) + end + + def moveShot() + r = Qt::Region.new( shotRect() ) + @timerCount += 1 + + shotR = shotRect() + + if shotR.x() > width() || shotR.y() > height() + @autoShootTimer.stop() + else + r = r.unite( Qt::Region.new( shotR ) ) + end + repaint( r ) + end + + def paintEvent( e ) + updateR = e.rect() + p = Qt::Painter.new( self ) + + if updateR.intersects( cannonRect() ) + paintCannon( p ) + end + if @autoShootTimer.isActive() && + updateR.intersects( shotRect() ) + paintShot( p ) + end + p.end() + end + + def paintShot( p ) + p.setBrush( black ) + p.setPen( Qt::NoPen ) + p.drawRect( shotRect() ) + end + + def paintCannon(p) + cr = cannonRect() + pix = Qt::Pixmap.new( cr.size() ) + pix.fill( self, cr.topLeft() ) + + tmp = Qt::Painter.new( pix ) + tmp.setBrush( blue ) + tmp.setPen( Qt::NoPen ) + tmp.translate( 0, pix.height() - 1 ) + tmp.drawPie( Qt::Rect.new(-35, -35, 70, 70), 0, 90*16 ) + tmp.rotate( - @ang ) + tmp.drawRect( @barrelRect ) + tmp.end() + + p.drawPixmap(cr.topLeft(), pix ) + end + + def cannonRect() + r = Qt::Rect.new( 0, 0, 50, 50) + r.moveBottomLeft( rect().bottomLeft() ) + return r + end + + def shotRect() + gravity = 4.0 + + time = @timerCount / 4.0 + velocity = @shoot_f + radians = @shoot_ang*3.14159265/180.0 + + velx = velocity*cos( radians ) + vely = velocity*sin( radians ) + x0 = ( @barrelRect.right() + 5.0 )*cos(radians) + y0 = ( @barrelRect.right() + 5.0 )*sin(radians) + x = x0 + velx*time + y = y0 + vely*time - 0.5*gravity*time*time + + r = Qt::Rect.new( 0, 0, 6, 6 ); + r.moveCenter( Qt::Point.new( x.round, height() - 1 - y.round ) ) + return r + end + + def sizePolicy() + return Qt::SizePolicy.new( Qt::SizePolicy::Expanding, Qt::SizePolicy::Expanding ) + end +end diff --git a/qtruby/rubylib/tutorial/t11/lcdrange.rb b/qtruby/rubylib/tutorial/t11/lcdrange.rb new file mode 100644 index 00000000..a0adc842 --- /dev/null +++ b/qtruby/rubylib/tutorial/t11/lcdrange.rb @@ -0,0 +1,35 @@ +require 'Qt' + +class LCDRange < Qt::VBox + signals 'valueChanged(int)' + slots 'setValue(int)', 'setRange(int, int)' + + def initialize(parent, name) + super + lcd = Qt::LCDNumber.new(2, self, 'lcd') + @slider = Qt::Slider.new(Qt::VBox::Horizontal, self, 'slider') + @slider.setRange(0, 99) + @slider.setValue(0) + connect(@slider, SIGNAL('valueChanged(int)'), lcd, SLOT('display(int)')) + connect(@slider, SIGNAL('valueChanged(int)'), SIGNAL('valueChanged(int)')) + setFocusProxy(@slider) + end + + def value() + @slider.value() + end + + def setValue( value ) + @slider.setValue( value ) + end + + def setRange( minVal, maxVal ) + if minVal < 0 || maxVal > 99 || minVal > maxVal + qWarning( "LCDRange::setRange(#{minVal},#{maxVal})\n" + + "\tRange must be 0..99\n" + + "\tand minVal must not be greater than maxVal" ) + return + end + @slider.setRange( minVal, maxVal ) + end +end diff --git a/qtruby/rubylib/tutorial/t11/t11.rb b/qtruby/rubylib/tutorial/t11/t11.rb new file mode 100755 index 00000000..8656f6f5 --- /dev/null +++ b/qtruby/rubylib/tutorial/t11/t11.rb @@ -0,0 +1,67 @@ +#!/usr/bin/env ruby +$VERBOSE = true; $:.unshift File.dirname($0) + +require 'Qt' +require 'lcdrange.rb' +require 'cannon.rb' + +class MyWidget < Qt::Widget + def initialize() + super + quit = Qt::PushButton.new('Quit', self, 'quit') + quit.setFont(Qt::Font.new('Times', 18, Qt::Font::Bold)) + + connect(quit, SIGNAL('clicked()'), $qApp, SLOT('quit()')) + + angle = LCDRange.new( self, 'angle' ) + angle.setRange( 5, 70 ) + + force = LCDRange.new( self, 'force' ) + force.setRange( 10, 50 ) + + cannonField = CannonField.new( self, 'cannonField' ) + + connect( angle, SIGNAL('valueChanged(int)'), + cannonField, SLOT('setAngle(int)') ) + connect( cannonField, SIGNAL('angleChanged(int)'), + angle, SLOT('setValue(int)') ) + + connect( force, SIGNAL('valueChanged(int)'), + cannonField, SLOT('setForce(int)') ) + connect( cannonField, SIGNAL('forceChanged(int)'), + force, SLOT('setValue(int)') ) + + shoot = Qt::PushButton.new( '&Shoot', self, 'shoot' ) + shoot.setFont( Qt::Font.new( 'Times', 18, Qt::Font::Bold ) ) + + connect( shoot, SIGNAL('clicked()'), cannonField, SLOT('shoot()') ) + + grid = Qt::GridLayout.new( self, 2, 2, 10 ) + grid.addWidget( quit, 0, 0 ) + grid.addWidget( cannonField, 1, 1 ) + grid.setColStretch( 1, 10 ) + + leftBox = Qt::VBoxLayout.new() + grid.addLayout( leftBox, 1, 0 ) + leftBox.addWidget( angle ) + leftBox.addWidget( force ) + + topBox = Qt::HBoxLayout.new() + grid.addLayout( topBox, 0, 1 ) + topBox.addWidget( shoot ) + topBox.addStretch( 1 ) + + angle.setValue( 60 ) + force.setValue( 25 ) + angle.setFocus() + end +end + +Qt::Application.setColorSpec( Qt::Application::CustomColor ) +a = Qt::Application.new(ARGV) + +w = MyWidget.new +w.setGeometry( 100, 100, 500, 355 ) +a.setMainWidget(w) +w.show +a.exec |