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diff --git a/doc/src/qpaintdevice.qdoc b/doc/src/qpaintdevice.qdoc deleted file mode 100644 index 8c0ae64..0000000 --- a/doc/src/qpaintdevice.qdoc +++ /dev/null @@ -1,289 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). -** All rights reserved. -** Contact: Nokia Corporation (qt-info@nokia.com) -** -** This file is part of the documentation of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** No Commercial Usage -** This file contains pre-release code and may not be distributed. -** You may use this file in accordance with the terms and conditions -** contained in the Technology Preview License Agreement accompanying -** this package. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 2.1 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 2.1 requirements -** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -** -** In addition, as a special exception, Nokia gives you certain additional -** rights. These rights are described in the Nokia Qt LGPL Exception -** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. -** -** If you have questions regarding the use of this file, please contact -** Nokia at qt-info@nokia.com. -** -** -** -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -/*! - \class QPaintDevice - \brief The QPaintDevice class is the base class of objects that - can be painted. - - \ingroup multimedia - - A paint device is an abstraction of a two-dimensional space that - can be drawn using a QPainter. Its default coordinate system has - its origin located at the top-left position. X increases to the - right and Y increases downwards. The unit is one pixel. - - The drawing capabilities of QPaintDevice are currently implemented - by the QWidget, QImage, QPixmap, QGLPixelBuffer, QPicture, and - QPrinter subclasses. - - To implement support for a new backend, you must derive from - QPaintDevice and reimplement the virtual paintEngine() function to - tell QPainter which paint engine should be used to draw on this - particular device. Note that you also must create a corresponding - paint engine to be able to draw on the device, i.e derive from - QPaintEngine and reimplement its virtual functions. - - \warning Qt requires that a QApplication object exists before - any paint devices can be created. Paint devices access window - system resources, and these resources are not initialized before - an application object is created. - - The QPaintDevice class provides several functions returning the - various device metrics: The depth() function returns its bit depth - (number of bit planes). The height() function returns its height - in default coordinate system units (e.g. pixels for QPixmap and - QWidget) while heightMM() returns the height of the device in - millimeters. Similiarily, the width() and widthMM() functions - return the width of the device in default coordinate system units - and in millimeters, respectively. Alternatively, the protected - metric() function can be used to retrieve the metric information - by specifying the desired PaintDeviceMetric as argument. - - The logicalDpiX() and logicalDpiY() functions return the - horizontal and vertical resolution of the device in dots per - inch. The physicalDpiX() and physicalDpiY() functions also return - the resolution of the device in dots per inch, but note that if - the logical and vertical resolution differ, the corresponding - QPaintEngine must handle the mapping. Finally, the numColors() - function returns the number of different colors available for the - paint device. - - \sa QPaintEngine, QPainter, {The Coordinate System}, {The Paint - System} -*/ - -/*! - \enum QPaintDevice::PaintDeviceMetric - - Describes the various metrics of a paint device. - - \value PdmWidth The width of the paint device in default - coordinate system units (e.g. pixels for QPixmap and QWidget). See - also width(). - - \value PdmHeight The height of the paint device in default - coordinate system units (e.g. pixels for QPixmap and QWidget). See - also height(). - - \value PdmWidthMM The width of the paint device in millimeters. See - also widthMM(). - - \value PdmHeightMM The height of the paint device in millimeters. See - also heightMM(). - - \value PdmNumColors The number of different colors available for - the paint device. See also numColors(). - - \value PdmDepth The bit depth (number of bit planes) of the paint - device. See also depth(). - - \value PdmDpiX The horizontal resolution of the device in dots per - inch. See also logicalDpiX(). - - \value PdmDpiY The vertical resolution of the device in dots per inch. See - also logicalDpiY(). - - \value PdmPhysicalDpiX The horizontal resolution of the device in - dots per inch. See also physicalDpiX(). - - \value PdmPhysicalDpiY The vertical resolution of the device in - dots per inch. See also physicalDpiY(). - - \sa metric() -*/ - -/*! - \fn QPaintDevice::QPaintDevice() - - Constructs a paint device. This constructor can be invoked only from - subclasses of QPaintDevice. -*/ - -/*! - \fn QPaintDevice::~QPaintDevice() - - Destroys the paint device and frees window system resources. -*/ - -/*! - \fn int QPaintDevice::devType() const - - \internal - - Returns the device type identifier, which is QInternal::Widget - if the device is a QWidget, QInternal::Pixmap if it's a - QPixmap, QInternal::Printer if it's a QPrinter, - QInternal::Picture if it's a QPicture, or - QInternal::UnknownDevice in other cases. -*/ - -/*! - \fn bool QPaintDevice::paintingActive() const - - Returns true if the device is currently being painted on, i.e. someone has - called QPainter::begin() but not yet called QPainter::end() for - this device; otherwise returns false. - - \sa QPainter::isActive() -*/ - -/*! - \fn QPaintEngine *QPaintDevice::paintEngine() const - - Returns a pointer to the paint engine used for drawing on the - device. -*/ - -/*! - \fn int QPaintDevice::metric(PaintDeviceMetric metric) const - - Returns the metric information for the given paint device \a metric. - - \sa PaintDeviceMetric -*/ - -/*! - \fn int QPaintDevice::width() const - - Returns the width of the paint device in default coordinate system - units (e.g. pixels for QPixmap and QWidget). - - \sa widthMM() -*/ - -/*! - \fn int QPaintDevice::height() const - - Returns the height of the paint device in default coordinate - system units (e.g. pixels for QPixmap and QWidget). - - \sa heightMM() -*/ - -/*! - \fn int QPaintDevice::widthMM() const - - Returns the width of the paint device in millimeters. Due to platform - limitations it may not be possible to use this function to determine - the actual physical size of a widget on the screen. - - \sa width() -*/ - -/*! - \fn int QPaintDevice::heightMM() const - - Returns the height of the paint device in millimeters. Due to platform - limitations it may not be possible to use this function to determine - the actual physical size of a widget on the screen. - - \sa height() -*/ - -/*! - \fn int QPaintDevice::numColors() const - - Returns the number of different colors available for the paint - device. Since this value is an int, it will not be sufficient to represent - the number of colors on 32 bit displays, in this case INT_MAX is - returned instead. -*/ - -/*! - \fn int QPaintDevice::depth() const - - Returns the bit depth (number of bit planes) of the paint device. -*/ - -/*! - \fn int QPaintDevice::logicalDpiX() const - - Returns the horizontal resolution of the device in dots per inch, - which is used when computing font sizes. For X11, this is usually - the same as could be computed from widthMM(). - - Note that if the logicalDpiX() doesn't equal the physicalDpiX(), - the corresponding QPaintEngine must handle the resolution mapping. - - \sa logicalDpiY(), physicalDpiX() -*/ - -/*! - \fn int QPaintDevice::logicalDpiY() const - - Returns the vertical resolution of the device in dots per inch, - which is used when computing font sizes. For X11, this is usually - the same as could be computed from heightMM(). - - Note that if the logicalDpiY() doesn't equal the physicalDpiY(), - the corresponding QPaintEngine must handle the resolution mapping. - - \sa logicalDpiX(), physicalDpiY() -*/ - -/*! - \fn int QPaintDevice::physicalDpiX() const - - Returns the horizontal resolution of the device in dots per inch. - For example, when printing, this resolution refers to the physical - printer's resolution. The logical DPI on the other hand, refers to - the resolution used by the actual paint engine. - - Note that if the physicalDpiX() doesn't equal the logicalDpiX(), - the corresponding QPaintEngine must handle the resolution mapping. - - \sa physicalDpiY(), logicalDpiX() -*/ - -/*! - \fn int QPaintDevice::physicalDpiY() const - - Returns the horizontal resolution of the device in dots per inch. - For example, when printing, this resolution refers to the physical - printer's resolution. The logical DPI on the other hand, refers to - the resolution used by the actual paint engine. - - Note that if the physicalDpiY() doesn't equal the logicalDpiY(), - the corresponding QPaintEngine must handle the resolution mapping. - - \sa physicalDpiX(), logicalDpiY() -*/ |