QFrame(3qt)QFrame(3qt)NAMEQFrame - The base class of widgets that can have a frame
SYNOPSIS
#include <qframe.h>
Inherits QWidget.
Inherited by QGroupBox, QScrollView, QDockWindow, QGrid, QHBox, QLabel,
QLCDNumber, QLineEdit, QMenuBar, QPopupMenu, QProgressBar, QSplitter,
QToolBox, and QWidgetStack.
Public Members
QFrame ( QWidget * parent = 0, const char * name = 0, WFlags f = 0 )
int frameStyle () const
virtual void setFrameStyle ( int style )
int frameWidth () const
QRect contentsRect () const
enum Shape { NoFrame = 0, Box = 0x0001, Panel = 0x0002, WinPanel =
0x0003, HLine = 0x0004, VLine = 0x0005, StyledPanel = 0x0006,
PopupPanel = 0x0007, MenuBarPanel = 0x0008, ToolBarPanel = 0x0009,
LineEditPanel = 0x000a, TabWidgetPanel = 0x000b, GroupBoxPanel =
0x000c, MShape = 0x000f }
enum Shadow { Plain = 0x0010, Raised = 0x0020, Sunken = 0x0030, MShadow
= 0x00f0 }
Shape frameShape () const
void setFrameShape ( Shape )
Shadow frameShadow () const
void setFrameShadow ( Shadow )
int lineWidth () const
virtual void setLineWidth ( int )
int margin () const
virtual void setMargin ( int )
int midLineWidth () const
virtual void setMidLineWidth ( int )
QRect frameRect () const
virtual void setFrameRect ( const QRect & )
Properties
QRect contentsRect - the rectangle inside the frame (read only)
QRect frameRect - the frame rectangle
Shadow frameShadow - the frame shadow value from the frame style
Shape frameShape - the frame shape value from the frame style
int frameWidth - the width of the frame that is drawn (read only)
int lineWidth - the line width
int margin - the width of the margin
int midLineWidth - the width of the mid-line
Protected Members
virtual void paintEvent ( QPaintEvent * event )
virtual void resizeEvent ( QResizeEvent * e )
virtual void drawFrame ( QPainter * p )
virtual void drawContents ( QPainter * )
virtual void frameChanged ()
DESCRIPTION
The QFrame class is the base class of widgets that can have a frame.
It draws a frame and calls a virtual function, drawContents(), to fill
in the frame. This function is reimplemented by subclasses. There are
also two other less useful functions: drawFrame() and frameChanged().
QPopupMenu uses this to "raise" the menu above the surrounding screen.
QProgressBar has a "sunken" look. QLabel has a flat look. The frames of
widgets like these can be changed.
QLabel label(...);
label.setFrameStyle( QFrame::Panel | QFrame::Raised );
label.setLineWidth( 2 );
QProgressBar pbar(...);
label.setFrameStyle( QFrame::NoFrame );
The QFrame class can also be used directly for creating simple frames
without any contents, although usually you would use a QHBox or QVBox
because they automatically lay out the widgets you put inside the
frame.
A frame widget has four attributes: frameStyle(), lineWidth(),
midLineWidth(), and margin().
The frame style is specified by a frame shape and a shadow style. The
frame shapes are NoFrame, Box, Panel, StyledPanel, PopupPanel,
WinPanel, ToolBarPanel, MenuBarPanel, HLine and VLine; the shadow
styles are Plain, Raised and Sunken.
The line width is the width of the frame border.
The mid-line width specifies the width of an extra line in the middle
of the frame, which uses a third color to obtain a special 3D effect.
Notice that a mid-line is only drawn for Box, HLine and VLine frames
that are raised or sunken.
The margin is the gap between the frame and the contents of the frame.
This table shows the most useful combinations of styles and widths (and
some rather useless ones):
<center>
[Image Omitted]
</center>
See also Abstract Widget Classes.
Member Type Documentation
QFrame::Shadow
This enum type defines the 3D effect used for QFrame's frame.
QFrame::Plain - the frame and contents appear level with the
surroundings; draws using the palette foreground color (without any 3D
effect)
QFrame::Raised - the frame and contents appear raised; draws a 3D
raised line using the light and dark colors of the current color group
QFrame::Sunken - the frame and contents appear sunken; draws a 3D
sunken line using the light and dark colors of the current color group
QFrame::MShadow - internal; mask for the shadow
Shadow interacts with QFrame::Shape, the lineWidth() and the
midLineWidth(). See the picture of the frames in the class description.
See also QFrame::Shape, lineWidth, and midLineWidth.
QFrame::Shape
This enum type defines the shapes of a QFrame's frame.
QFrame::NoFrame - QFrame draws nothing
QFrame::Box - QFrame draws a box around its contents
QFrame::Panel - QFrame draws a panel to make the contents appear raised
or sunken
QFrame::StyledPanel - draws a rectangular panel with a look that
depends on the current GUI style. It can be raised or sunken.
QFrame::HLine - QFrame draws a horizontal line that frames nothing
(useful as separator)
QFrame::VLine - QFrame draws a vertical line that frames nothing
(useful as separator)
QFrame::GroupBoxPanel - draws a rectangular panel
QFrame::WinPanel - draws a rectangular panel that can be raised or
sunken like those in Windows 95. Specifying this shape sets the line
width to 2 pixels. WinPanel is provided for compatibility. For GUI
style independence we recommend using StyledPanel instead.
QFrame::ToolBarPanel
QFrame::MenuBarPanel
QFrame::PopupPanel
QFrame::LineEditPanel - is used to draw a frame suitable for line
edits. The look depends upon the current GUI style.
QFrame::TabWidgetPanel - is used to draw a frame suitable for tab
widgets. The look depends upon the current GUI style.
QFrame::MShape - internal mask
When it does not call QStyle, Shape interacts with QFrame::Shadow, the
lineWidth() and the midLineWidth() to create the total result. See the
picture of the frames in the class description.
See also QFrame::Shadow, QFrame::style(), and QStyle::drawPrimitive().
MEMBER FUNCTION DOCUMENTATIONQFrame::QFrame ( QWidget * parent = 0, const char * name = 0, WFlags f = 0 )
Constructs a frame widget with frame style NoFrame and a 1-pixel frame
width.
The parent, name and f arguments are passed to the QWidget constructor.
QRect QFrame::contentsRect () const
Returns the rectangle inside the frame. See the "contentsRect" property
for details.
void QFrame::drawContents ( QPainter * ) [virtual protected]
Virtual function that draws the contents of the frame.
The QPainter is already open when you get it, and you must leave it
open. Painter transformations are switched off on entry. If you
transform the painter, remember to take the frame into account and
reset transformation before returning.
This function is reimplemented by subclasses that draw something inside
the frame. It should only draw inside contentsRect(). The default
function does nothing.
See also contentsRect and QPainter::setClipRect().
Reimplemented in QLabel, QLCDNumber, QMenuBar, and QPopupMenu.
void QFrame::drawFrame ( QPainter * p ) [virtual protected]
Draws the frame using the painter p and the current frame attributes
and color group. The rectangle inside the frame is not affected.
This function is virtual, but in general you do not need to reimplement
it. If you do, note that the QPainter is already open and must remain
open.
See also frameRect, contentsRect, drawContents(), frameStyle(), and
palette.
void QFrame::frameChanged () [virtual protected]
Virtual function that is called when the frame style, line width or
mid-line width changes.
This function can be reimplemented by subclasses that need to know when
the frame attributes change.
The default implementation calls update().
QRect QFrame::frameRect () const
Returns the frame rectangle. See the "frameRect" property for details.
Shadow QFrame::frameShadow () const
Returns the frame shadow value from the frame style. See the
"frameShadow" property for details.
Shape QFrame::frameShape () const
Returns the frame shape value from the frame style. See the
"frameShape" property for details.
int QFrame::frameStyle () const
Returns the frame style.
The default value is QFrame::NoFrame.
See also setFrameStyle(), frameShape, and frameShadow.
Example: scrollview/scrollview.cpp.
int QFrame::frameWidth () const
Returns the width of the frame that is drawn. See the "frameWidth"
property for details.
int QFrame::lineWidth () const
Returns the line width. See the "lineWidth" property for details.
int QFrame::margin () const
Returns the width of the margin. See the "margin" property for details.
int QFrame::midLineWidth () const
Returns the width of the mid-line. See the "midLineWidth" property for
details.
void QFrame::paintEvent ( QPaintEvent * event ) [virtual protected]
Processes the paint event event.
Paints the frame and the contents.
Opens the painter on the frame and calls drawFrame(), then
drawContents().
Examples:
Reimplemented from QWidget.
void QFrame::resizeEvent ( QResizeEvent * e ) [virtual protected]
Processes the resize event e.
Adjusts the frame rectangle for the resized widget. The frame rectangle
is elastic, and the surrounding area is static.
The resulting frame rectangle may be null or invalid. You can use
setMinimumSize() to avoid those possibilities.
Nothing is done if the frame rectangle is a null rectangle already.
Example: life/life.cpp.
Reimplemented from QWidget.
void QFrame::setFrameRect ( const QRect & ) [virtual]
Sets the frame rectangle. See the "frameRect" property for details.
void QFrame::setFrameShadow ( Shadow )
Sets the frame shadow value from the frame style. See the "frameShadow"
property for details.
void QFrame::setFrameShape ( Shape )
Sets the frame shape value from the frame style. See the "frameShape"
property for details.
void QFrame::setFrameStyle ( int style ) [virtual]
Sets the frame style to style.
The style is the bitwise OR between a frame shape and a frame shadow
style. See the illustration in the class documentation.
The frame shapes are given in QFrame::Shape and the shadow styles in
QFrame::Shadow.
If a mid-line width greater than 0 is specified, an additional line is
drawn for Raised or Sunken Box, HLine, and VLine frames. The mid-color
of the current color group is used for drawing middle lines.
See also Illustration, frameStyle(), colorGroup, and QColorGroup.
Examples:
void QFrame::setLineWidth ( int ) [virtual]
Sets the line width. See the "lineWidth" property for details.
void QFrame::setMargin ( int ) [virtual]
Sets the width of the margin. See the "margin" property for details.
void QFrame::setMidLineWidth ( int ) [virtual]
Sets the width of the mid-line. See the "midLineWidth" property for
details.
Property Documentation
QRect contentsRect
This property holds the rectangle inside the frame.
Get this property's value with contentsRect().
See also frameRect and drawContents().
QRect frameRect
This property holds the frame rectangle.
The frame rectangle is the rectangle the frame is drawn in. By default,
this is the entire widget. Setting this property does not cause a
widget update.
If this property is set to a null rectangle (for example QRect(0, 0, 0,
0)), then the frame rectangle is equivalent to the widget rectangle.
See also contentsRect.
Set this property's value with setFrameRect() and get this property's
value with frameRect().
Shadow frameShadow
This property holds the frame shadow value from the frame style.
Set this property's value with setFrameShadow() and get this property's
value with frameShadow().
See also frameStyle() and frameShape.
Shape frameShape
This property holds the frame shape value from the frame style.
Set this property's value with setFrameShape() and get this property's
value with frameShape().
See also frameStyle() and frameShadow.
int frameWidth
This property holds the width of the frame that is drawn.
Note that the frame width depends on the frame style, not only the line
width and the mid-line width. For example, the style NoFrame always has
a frame width of 0, whereas the style Panel has a frame width
equivalent to the line width. The frame width also includes the margin.
See also lineWidth, midLineWidth, frameStyle(), and margin.
Get this property's value with frameWidth().
int lineWidth
This property holds the line width.
Note that the total line width for HLine and VLine is given by
frameWidth(), not lineWidth().
The default value is 1.
See also midLineWidth and frameWidth.
Set this property's value with setLineWidth() and get this property's
value with lineWidth().
int margin
This property holds the width of the margin.
The margin is the distance between the innermost pixel of the frame and
the outermost pixel of contentsRect(). It is included in frameWidth().
The margin is filled according to backgroundMode().
The default value is 0.
See also margin, lineWidth, and frameWidth.
Set this property's value with setMargin() and get this property's
value with margin().
int midLineWidth
This property holds the width of the mid-line.
The default value is 0.
See also lineWidth and frameWidth.
Set this property's value with setMidLineWidth() and get this
property's value with midLineWidth().
SEE ALSO
http://doc.trolltech.com/qframe.html
http://www.trolltech.com/faq/tech.html
COPYRIGHT
Copyright 1992-2007 Trolltech ASA, http://www.trolltech.com. See the
license file included in the distribution for a complete license
statement.
AUTHOR
Generated automatically from the source code.
BUGS
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Trolltech AS 2 February 2007 QFrame(3qt)