QgsComposerItemGroup Class Reference

A container for grouping several QgsComposerItems. More...

#include <qgscomposeritemgroup.h>

Inheritance diagram for QgsComposerItemGroup:

Collaboration diagram for QgsComposerItemGroup:

Public Slots
void	itemDestroyed ()
Public Slots inherited from QgsComposerItem
virtual void	setRotation (double r)
void	repaint ()

Signals
void	childItemDeleted (QgsComposerItem *item)
Signals inherited from QgsComposerItem
void	rotationChanged (double newRotation)
	Is emitted on rotation change to notify north arrow pictures.
void	itemChanged ()
	Used e.g.
void	sizeChanged ()
	Emitted if the rectangle changes.

Public Member Functions
	QgsComposerItemGroup (QgsComposition *c)
	~QgsComposerItemGroup ()
virtual int	type () const
	return correct graphics item type.
void	addItem (QgsComposerItem *item)
	Adds an item to the group.
void	removeItems ()
	Removes the items but does not delete them.
void	paint (QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget=0)
	Draw outline and ev.
void	setSceneRect (const QRectF &rectangle)
	Sets this items bound in scene coordinates such that 1 item size units corresponds to 1 scene size unit.
bool	writeXML (QDomElement &elem, QDomDocument &doc) const
	stores state in Dom node
bool	readXML (const QDomElement &itemElem, const QDomDocument &doc)
	sets state from Dom document
QSet< QgsComposerItem * >	items ()
Public Member Functions inherited from QgsComposerItem
	QgsComposerItem (QgsComposition *composition, bool manageZValue=true)
	Constructor.
	QgsComposerItem (qreal x, qreal y, qreal width, qreal height, QgsComposition *composition, bool manageZValue=true)
	Constructor with box position and composer object.
virtual	~QgsComposerItem ()
virtual void	setSelected (bool s)
	Set selected, selected item should be highlighted.
virtual bool	selected ()
	Is selected.
virtual bool	writeSettings ()
	stores state in project
virtual bool	readSettings ()
	read state from project
virtual bool	removeSettings ()
	delete settings from project file
void	move (double dx, double dy)
	Moves item in canvas coordinates.
virtual void	moveContent (double dx, double dy)
	Move Content of item.
virtual void	zoomContent (int delta, double x, double y)
	Zoom content of item.
void	setItemPosition (double x, double y, ItemPositionMode itemPoint=UpperLeft)
	Moves the item to a new position (in canvas coordinates)
void	setItemPosition (double x, double y, double width, double height, ItemPositionMode itemPoint=UpperLeft)
	Sets item position and width / height in one go.
ItemPositionMode	lastUsedPositionMode ()
	Returns item's last used position mode.
bool	_writeXML (QDomElement &itemElem, QDomDocument &doc) const
	Writes parameter that are not subclass specific in document.
bool	_readXML (const QDomElement &itemElem, const QDomDocument &doc)
	Reads parameter that are not subclass specific in document.
bool	hasFrame () const
	Whether this item has a frame or not.
void	setFrameEnabled (bool drawFrame)
	Set whether this item has a frame drawn around it or not.
bool	hasBackground () const
	Whether this item has a Background or not.
void	setBackgroundEnabled (bool drawBackground)
	Set whether this item has a Background drawn around it or not.
QColor	backgroundColor () const
	Gets the background color for this item.
void	setBackgroundColor (const QColor &backgroundColor)
	Sets the background color for this item.
QPainter::CompositionMode	blendMode () const
	Returns the item's composition blending mode.
void	setBlendMode (QPainter::CompositionMode blendMode)
	Sets the item's composition blending mode.
int	transparency () const
	Returns the item's transparency.
void	setTransparency (int transparency)
	Sets the item's transparency.
bool	effectsEnabled () const
	Returns true if effects (eg blend modes) are enabled for the item.
void	setEffectsEnabled (bool effectsEnabled)
	Sets whether effects (eg blend modes) are enabled for the item.
const QgsComposition *	composition () const
QgsComposition *	composition ()
virtual void	beginItemCommand (const QString &text)
void	beginCommand (const QString &commandText, QgsComposerMergeCommand::Context c=QgsComposerMergeCommand::Unknown)
	Starts new composer undo command.
virtual void	endItemCommand ()
void	endCommand ()
	Finish current command and push it onto the undo stack.
void	cancelCommand ()
void	drawText (QPainter *p, double x, double y, const QString &text, const QFont &font) const
	Draws Text.
void	drawText (QPainter *p, const QRectF &rect, const QString &text, const QFont &font, Qt::AlignmentFlag halignment=Qt::AlignLeft, Qt::AlignmentFlag valignment=Qt::AlignTop) const
	Like the above, but with a rectangle for multiline text.
double	textWidthMillimeters (const QFont &font, const QString &text) const
	Returns the font width in millimeters (considers upscaling and downscaling with FONT_WORKAROUND_SCALE.
double	fontHeightCharacterMM (const QFont &font, const QChar &c) const
	Returns the font height of a character in millimeters.
double	fontAscentMillimeters (const QFont &font) const
	Returns the font ascent in Millimeters (considers upscaling and downscaling with FONT_WORKAROUND_SCALE.
double	fontDescentMillimeters (const QFont &font) const
	Returns the font ascent in Millimeters (considers upscaling and downscaling with FONT_WORKAROUND_SCALE.
double	pixelFontSize (double pointSize) const
	Calculates font to from point size to pixel size.
QFont	scaledFontPixelSize (const QFont &font) const
	Returns a font where size is in pixel and font size is upscaled with FONT_WORKAROUND_SCALE.
void	setPositionLock (bool lock)
	Locks / unlocks the item position for mouse drags.
bool	positionLock () const
	Returns position lock for mouse drags (true means locked)
void	updateCursor (const QPointF &itemPos)
	Update mouse cursor at (item) position.
double	rotation () const
virtual void	updateItem ()
	Updates item, with the possibility to do custom update for subclasses.
QString	id () const
	Get item's id (which is not necessarly unique)
virtual void	setId (const QString &id)
	Set item's id (which is not necessarly unique)
QString	uuid () const
	Get item identification name.

Protected Member Functions
void	drawFrame (QPainter *p)
	Draw black frame around item.
Protected Member Functions inherited from QgsComposerItem
virtual void	mouseMoveEvent (QGraphicsSceneMouseEvent *event)
virtual void	mousePressEvent (QGraphicsSceneMouseEvent *event)
virtual void	mouseReleaseEvent (QGraphicsSceneMouseEvent *event)
virtual void	hoverMoveEvent (QGraphicsSceneHoverEvent *event)
Qt::CursorShape	cursorForPosition (const QPointF &itemCoordPos)
	Finds out the appropriate cursor for the current mouse position in the widget (e.g.
QgsComposerItem::MouseMoveAction	mouseMoveActionForPosition (const QPointF &itemCoordPos)
	Finds out which mouse move action to choose depending on the cursor position inside the widget.
void	changeItemRectangle (const QPointF &currentPosition, const QPointF &mouseMoveStartPos, const QGraphicsRectItem *originalItem, double dx, double dy, QGraphicsRectItem *changeItem)
	Changes the rectangle of an item depending on current mouse action (resize or move)
virtual void	drawSelectionBoxes (QPainter *p)
	Draw selection boxes around item.
virtual void	drawBackground (QPainter *p)
	Draw background.
void	drawArrowHead (QPainter *p, double x, double y, double angle, double arrowHeadWidth) const
	Draws arrowhead.
double	angle (const QPointF &p1, const QPointF &p2) const
	Returns angle of the line from p1 to p2 (clockwise, starting at N)
double	rectHandlerBorderTolerance () const
	Returns the current (zoom level dependent) tolerance to decide if mouse position is close enough to the item border for resizing.
double	lockSymbolSize () const
	Returns the size of the lock symbol depending on the composer zoom level and the item size.
double	horizontalViewScaleFactor () const
	Returns the zoom factor of the graphics view.
bool	imageSizeConsideringRotation (double &width, double &height) const
	Calculates width and hight of the picture (in mm) such that it fits into the item frame with the given rotation.
bool	cornerPointOnRotatedAndScaledRect (double &x, double &y, double width, double height) const
	Calculates corner point after rotation and scaling.
void	sizeChangedByRotation (double &width, double &height)
	Calculates width / height of the bounding box of a rotated rectangle (mRotation)
void	rotate (double angle, double &x, double &y) const
	Rotates a point / vector.
QGraphicsLineItem *	hAlignSnapItem ()
	Return horizontal align snap item.
void	deleteHAlignSnapItem ()
QGraphicsLineItem *	vAlignSnapItem ()
	Return vertical align snap item.
void	deleteVAlignSnapItem ()
void	deleteAlignItems ()

Private Attributes
QSet< QgsComposerItem * >	mItems
QRectF	mSceneBoundingRectangle

Additional Inherited Members
Public Types inherited from QgsComposerItem
enum	ItemType {   ComposerItem = UserType + 100, ComposerArrow, ComposerItemGroup, ComposerLabel,   ComposerLegend, ComposerMap, ComposerPaper, ComposerPicture,   ComposerScaleBar, ComposerShape, ComposerTable, ComposerAttributeTable,   ComposerTextTable, ComposerFrame }
enum	MouseMoveAction {   MoveItem, ResizeUp, ResizeDown, ResizeLeft,   ResizeRight, ResizeLeftUp, ResizeRightUp, ResizeLeftDown,   ResizeRightDown, NoAction }
	Describes the action (move or resize in different directon) to be done during mouse move. More...
enum	ItemPositionMode {   UpperLeft, UpperMiddle, UpperRight, MiddleLeft,   Middle, MiddleRight, LowerLeft, LowerMiddle,   LowerRight }
Protected Attributes inherited from QgsComposerItem
QgsComposition *	mComposition
QgsComposerItem::MouseMoveAction	mCurrentMouseMoveAction
QPointF	mMouseMoveStartPos
	Start point of the last mouse move action (in scene coordinates)
QPointF	mLastMouseEventPos
	Position of the last mouse move event (in scene coordinates)
QGraphicsRectItem *	mBoundingResizeRectangle
	Rectangle used during move and resize actions.
QGraphicsLineItem *	mHAlignSnapItem
QGraphicsLineItem *	mVAlignSnapItem
bool	mFrame
	True if item fram needs to be painted.
bool	mBackground
	True if item background needs to be painted.
QColor	mBackgroundColor
	Background color.
bool	mItemPositionLocked
	True if item position and size cannot be changed with mouse move.
double	mLastValidViewScaleFactor
	Backup to restore item appearance if no view scale factor is available.
double	mRotation
	Item rotation in degrees, clockwise.
QPainter::CompositionMode	mBlendMode
	Composition blend mode for item.
bool	mEffectsEnabled
QgsComposerEffect *	mEffect
int	mTransparency
	Item transparency.
ItemPositionMode	mLastUsedPositionMode
	The item's position mode.

Detailed Description

A container for grouping several QgsComposerItems.

Definition at line 24 of file qgscomposeritemgroup.h.

Constructor & Destructor Documentation

QgsComposerItemGroup::QgsComposerItemGroup

(

QgsComposition *

c

)

Definition at line 24 of file qgscomposeritemgroup.cpp.

QgsComposerItemGroup::~QgsComposerItemGroup

(

)

Definition at line 31 of file qgscomposeritemgroup.cpp.

References QgsComposerItem::mComposition, and mItems.

Member Function Documentation

void QgsComposerItemGroup::addItem ( QgsComposerItem *  item )

virtual

Adds an item to the group.

All the group members are deleted if the group is deleted

Reimplemented from QgsComposerItem.

Definition at line 44 of file qgscomposeritemgroup.cpp.

References itemDestroyed(), mItems, mSceneBoundingRectangle, setSceneRect(), and QgsComposerItem::setSelected().

Referenced by QgsComposerView::groupItems(), and readXML().

void QgsComposerItemGroup::childItemDeleted ( QgsComposerItem *  item )

signal

void QgsComposerItemGroup::drawFrame ( QPainter *  p )

protectedvirtual

Draw black frame around item.

Reimplemented from QgsComposerItem.

Definition at line 162 of file qgscomposeritemgroup.cpp.

References QgsComposerItem::mComposition, QgsComposerItem::mFrame, QgsComposition::plotStyle(), and QgsComposition::Preview.

Referenced by paint().

void QgsComposerItemGroup::itemDestroyed ( )

slot

Definition at line 109 of file qgscomposeritemgroup.cpp.

References mItems.

Referenced by addItem().

QSet<QgsComposerItem*> QgsComposerItemGroup::items ( )

inline

Definition at line 57 of file qgscomposeritemgroup.h.

Referenced by QgsComposerView::keyPressEvent(), readXML(), and QgsComposition::removeComposerItem().

void QgsComposerItemGroup::paint	(	QPainter *	painter,
		const QStyleOptionGraphicsItem *	option,
		QWidget *	widget = 0
	)

Draw outline and ev.

selection handles

Definition at line 114 of file qgscomposeritemgroup.cpp.

References drawFrame(), and QgsComposerItem::drawSelectionBoxes().

bool QgsComposerItemGroup::readXML ( const QDomElement &  itemElem, const QDomDocument &  doc  )

virtual

sets state from Dom document

Parameters

itemElem	is Dom node corresponding to item tag
doc	is the Dom document

Implements QgsComposerItem.

Definition at line 197 of file qgscomposeritemgroup.cpp.

References QgsComposerItem::_readXML(), addItem(), items(), QgsComposerItem::mComposition, QgsComposerItem::mTemplateUuid, QgsComposerItem::mUuid, and QgsComposerItem::uuid().

Referenced by QgsComposition::addItemsFromXML().

void QgsComposerItemGroup::removeItems ( )

virtual

Removes the items but does not delete them.

Reimplemented from QgsComposerItem.

Definition at line 98 of file qgscomposeritemgroup.cpp.

References mItems.

Referenced by QgsComposerView::ungroupItems().

void QgsComposerItemGroup::setSceneRect ( const QRectF &  rectangle )

virtual

Sets this items bound in scene coordinates such that 1 item size units corresponds to 1 scene size unit.

Reimplemented from QgsComposerItem.

Definition at line 125 of file qgscomposeritemgroup.cpp.

References mItems.

Referenced by addItem().

virtual int QgsComposerItemGroup::type ( ) const

inlinevirtual

return correct graphics item type.

Added in v1.7

Reimplemented from QgsComposerItem.

Definition at line 32 of file qgscomposeritemgroup.h.

References QgsComposerItem::ComposerItemGroup.

bool QgsComposerItemGroup::writeXML ( QDomElement &  elem, QDomDocument &  doc  ) const

virtual

stores state in Dom node

Parameters

elem	is Dom element corresponding to 'Composer' tag
doc	is the Dom document

Implements QgsComposerItem.

Definition at line 180 of file qgscomposeritemgroup.cpp.

References QgsComposerItem::_writeXML(), and mItems.

Member Data Documentation

QSet<QgsComposerItem*> QgsComposerItemGroup::mItems

private

Definition at line 69 of file qgscomposeritemgroup.h.

Referenced by addItem(), itemDestroyed(), removeItems(), setSceneRect(), writeXML(), and ~QgsComposerItemGroup().

QRectF QgsComposerItemGroup::mSceneBoundingRectangle

private

Definition at line 70 of file qgscomposeritemgroup.h.

Referenced by addItem().

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The documentation for this class was generated from the following files:

• /tmp/buildd/qgis-2.0.1/src/core/composer/qgscomposeritemgroup.h
• /tmp/buildd/qgis-2.0.1/src/core/composer/qgscomposeritemgroup.cpp