Module: Qt

Defined in:
lib/Qt/qtruby4.rb,
lib/Qt4.rb,
lib/qttest/qttest.rb

Overview

/***************************************************************************

                         qtruby.rb  -  description
                            -------------------
   begin                : Fri Jul 4 2003
   copyright            : (C) 2003-2008 by Richard Dale
   email                : [email protected]
***************************************************************************/

/***************************************************************************

*                                                                         *
*   This program is free software; you can redistribute it and/or modify  *
*   it under the terms of the GNU Lesser General Public License as        *
*   published by the Free Software Foundation; either version 2 of the    *
*   License, or (at your option) any later version.                       *
*                                                                         *
***************************************************************************/

Defined Under Namespace

Modules: DebugLevel, Internal, QtDebugChannel Classes: AbstractSlider, AbstractSocket, AbstractTextDocumentLayout, AccessibleEvent, Action, ActionEvent, Application, Base, BlockInvocation, Boolean, Buffer, ButtonGroup, ByteArray, CheckBox, ChildEvent, CloseEvent, Color, Connection, ContextMenuEvent, CoreApplication, Cursor, CustomEvent, DBusArgument, DBusConnection, DBusConnectionInterface, DBusError, DBusInterface, DBusMessage, DBusReply, DBusVariant, Date, DateTime, Dial, Dialog, Dir, DomAttr, DomDocumentType, DoubleSpinBox, DoubleValidator, DragEnterEvent, DragLeaveEvent, DropEvent, Enum, Event, EventLoop, File, FileIconProvider, FileOpenEvent, FocusEvent, Font, FontDatabase, Ftp, GLContext, GLPixelBuffer, GLWidget, GenericArgument, Gradient, GraphicsEllipseItem, GraphicsItem, GraphicsItemGroup, GraphicsLineItem, GraphicsPathItem, GraphicsPixmapItem, GraphicsPolygonItem, GraphicsProxyWidget, GraphicsRectItem, GraphicsSceneContextMenuEvent, GraphicsSceneDragDropEvent, GraphicsSceneHelpEvent, GraphicsSceneHoverEvent, GraphicsSceneMouseEvent, GraphicsSceneWheelEvent, GraphicsSimpleTextItem, GraphicsSvgItem, GraphicsTextItem, GraphicsWidget, HelpEvent, HideEvent, HoverEvent, Http, HttpRequestHeader, IODevice, IconDragEvent, Image, ImageIOHandler, ImageReader, ImageWriter, InputEvent, InputMethodEvent, IntValidator, Integer, ItemSelection, ItemSelectionModel, KeyEvent, KeySequence, LCDNumber, Library, Line, LineF, ListWidgetItem, Locale, Menu, MetaClassInfo, MetaEnum, MetaInfo, MetaMethod, MetaObject, MetaProperty, MetaType, MethodInvocation, ModelIndex, MouseEvent, MoveEvent, Movie, NetworkProxy, Object, PageSetupDialog, PaintEvent, Picture, PictureIO, Pixmap, PluginLoader, Point, PointF, Polygon, PolygonF, PrintDialog, Printer, Process, ProgressBar, ProgressDialog, PushButton, QObjectMember, RadioButton, Rect, RectF, ResizeEvent, RubyThreadFix, ScrollBar, Shortcut, ShortcutEvent, ShowEvent, SignalBlockInvocation, Size, SizeF, SizePolicy, Slider, SocketNotifier, SpinBox, SqlDatabase, SqlError, SqlField, SqlIndex, SqlQuery, SqlResult, SqlTableModel, StandardItem, StandardItemModel, StatusTipEvent, StyleHintReturn, StyleOption, SyntaxHighlighter, TableWidgetItem, TemporaryFile, Test, TextCursor, TextDocument, TextFormat, TextImageFormat, TextInlineObject, TextLength, TextList, TextObject, TextTable, TextTableCell, Time, TimeLine, Timer, TimerEvent, ToolButton, Translator, TreeWidget, TreeWidgetItem, TreeWidgetItemIterator, Url, UrlInfo, Uuid, Variant, WhatsThisClickedEvent, Widget, WindowStateChangeEvent, XmlAttributes

Constant Summary collapse

Meta =

Qt::Internal

{}
WidgetType =

These values are from the enum WindowType in qnamespace.h. Some of the names such as 'Qt::Dialog', clash with QtRuby class names. So add some constants here to use instead, renamed with an ending of 'Type'.

0x00000000
WindowType =
0x00000001
DialogType =
0x00000002 | WindowType
SheetType =
0x00000004 | WindowType
DrawerType =
0x00000006 | WindowType
PopupType =
0x00000008 | WindowType
ToolType =
0x0000000a | WindowType
ToolTipType =
0x0000000c | WindowType
SplashScreenType =
0x0000000e | WindowType
DesktopType =
0x00000010 | WindowType
SubWindowType =
0x00000012
@@debug_level =
DebugLevel::Off

Class Method Summary collapse

Class Method Details

.debug_levelObject


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# File 'lib/Qt/qtruby4.rb', line 43

def Qt.debug_level
  @@debug_level
end

.debug_level=(level) ⇒ Object


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# File 'lib/Qt/qtruby4.rb', line 38

def Qt.debug_level=(level)
  @@debug_level = level
  Internal::setDebug Qt::QtDebugChannel::QTDB_ALL if level >= DebugLevel::Extensive
end

.execute_in_main_thread(blocking = true, sleep_period = 0.001, delay_execution = false) ⇒ Object

Code which accesses the GUI must be executed in the main QT GUI thread. This method allows code in another thread to execute safely in the main GUI thread. By default it will block the main GUI thread until the code in the block completes althought this can be changed by passing false for the first parameter.

Parameters:

  • blocking (Boolean) (defaults to: true)

    Whether to block the main thread until the code in the block finishing executing. If false the main thread will be allowed to continue and the block code will execute in parallel.

  • sleep_period (Float) (defaults to: 0.001)

    The amount of time to sleep between checking whether the code in the block has finished executing

  • delay_execution (Boolean) (defaults to: false)

    Only used if called from the main GUI thread. Allows the block to be executed in parallel with the main thread.


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# File 'lib/Qt4.rb', line 93

def self.execute_in_main_thread (blocking = true, sleep_period = 0.001, delay_execution = false)
  if Thread.current != Thread.main
    complete = false
    RubyThreadFix.queue << lambda {|| yield; complete = true}
    if blocking
      until complete
        sleep(sleep_period)
      end
    end
  else
    if delay_execution
      RubyThreadFix.queue << lambda {|| yield; complete = true}
    else
      yield
    end
  end
end