QElectroTech  0.8-dev
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ElementScene Class Reference

The ElementScene class This class is the canvas allowing the visual edition of an electrial element. It displays the various primitives composing the drawing of the element, the border due to its fixed size and its hotspot. More...

#include <elementscene.h>

Inherits QGraphicsScene.

Collaboration diagram for ElementScene:
Collaboration graph

Public Types

enum  Behavior { Normal, PasteArea, AddPart }
 
enum  ItemOption {
  SortByZValue = 1, IncludeTerminals = 2, IncludeHelperItems = 4, Selected = 8,
  NonSelected = 16, SelectedOrNot = 24
}
 

Public Slots

void slot_select (const ElementContent &)
 ElementScene::slot_select Select the item in content, every others items in the scene are deselected. More...
 
void slot_selectAll ()
 ElementScene::slot_selectAll Select all items. More...
 
void slot_deselectAll ()
 ElementScene::slot_deselectAll deselect all item. More...
 
void slot_invertSelection ()
 ElementScene::slot_invertSelection Inverse Selection. More...
 
void slot_delete ()
 ElementScene::slot_delete Delete selected items. More...
 
void slot_editNames ()
 ElementScene::slot_editNames Launch a dialog for edit the names of the edited element. More...
 
void slot_editAuthorInformations ()
 ElementScene::slot_editAuthorInformations Starts a dialog to edit the additional information of this element. Concretely, this free field is intended to receive information on the author of the element, its license, etc. More...
 
void slot_editProperties ()
 ElementScene::slot_editProperties Open dialog to edit the element properties. More...
 
void managePrimitivesGroups ()
 ElementScene::managePrimitivesGroups Ensure the decorator is adequately shown, hidden or updated so it always represents the current selection. More...
 
void stackAction (ElementEditionCommand *)
 ElementScene::stackAction Push the provided command on the undo stack. More...
 

Signals

void partsAdded ()
 Signal emitted after one or several parts were added. More...
 
void partsRemoved ()
 Signal emitted after one or several parts were removed. More...
 
void partsZValueChanged ()
 Signal emitted when the zValue of one or several parts change. More...
 
void pasteAreaDefined (const QRectF &)
 Signal emitted when users have defined the copy/paste area. More...
 
void needZoomFit ()
 Signal emitted when need zoomFit. More...
 
void elementInfoChanged ()
 

Public Member Functions

 ElementScene (QETElementEditor *, QObject *=nullptr)
 ElementScene::ElementScene constructor. More...
 
 ~ElementScene () override
 ElementScene::~ElementScene. More...
 
void setEventInterface (ESEventInterface *event_interface)
 ElementScene::setEventInterface Set a new event interface. More...
 
void clearEventInterface ()
 ElementScene::clearEventInterface Clear the current event interface. More...
 
void setBehavior (ElementScene::Behavior)
 ElementScene::setBehavior Modify the current behavior of this scene. More...
 
ElementScene::Behavior behavior () const
 
QPointF snapToGrid (QPointF point)
 ElementScene::snapToGrid Rounds the coordinates of the point passed as a parameter so that this point is aligned with the grid. More...
 
void setNames (const NamesList &)
 ElementScene::setNames. More...
 
NamesList names () const
 ElementScene::names. More...
 
QString informations () const
 ElementScene::informations. More...
 
void setInformations (const QString &)
 ElementScene::setInformations. More...
 
QString elementType () const
 
DiagramContext elementKindInfo () const
 
DiagramContext elementInformation () const
 
virtual int xGrid () const
 ElementScene::xGrid. More...
 
virtual int yGrid () const
 ElementScene::yGrid. More...
 
virtual void setGrid (int, int)
 ElementScene::setGrid. More...
 
virtual const QDomDocument toXml (bool=true)
 ElementScene::toXml Export this element as a xml file. More...
 
virtual QRectF boundingRectFromXml (const QDomDocument &)
 ElementScene::boundingRectFromXml. More...
 
virtual void fromXml (const QDomDocument &, const QPointF &=QPointF(), bool=true, ElementContent *=nullptr)
 ElementScene::fromXml Imports the element described in an XML document. If a position is specified, the imported elements are positioned in such a way that the upper left corner of the smallest rectangle that can surround them all (the bounding rect) either at this position. More...
 
virtual void reset ()
 ElementScene::reset Remove all QGraphicsItems in the scene and clear the undo stack. More...
 
virtual QList< CustomElementPart * > primitives () const
 ElementScene::primitives. More...
 
virtual QList< QGraphicsItem * > zItems (ItemOptions options=ItemOptions(SortByZValue|IncludeTerminals|SelectedOrNot)) const
 ElementScene::zItems. More...
 
virtual ElementContent selectedContent () const
 ElementScene::selectedContent. More...
 
virtual void getPasteArea (const QRectF &)
 ElementScene::getPasteArea. More...
 
QRectF elementSceneGeometricRect () const
 ElementScene::elementSceneGeometricRect. More...
 
bool containsTerminals () const
 ElementScene::containsTerminals. More...
 
QUndoStack & undoStack ()
 ElementScene::undoStack. More...
 
QGIManagerqgiManager ()
 ElementScene::qgiManager. More...
 
bool wasCopiedFromThisElement (const QString &)
 ElementScene::wasCopiedFromThisElement. More...
 
void cut ()
 ElementScene::cut Handles the fact of cutting the selection = exporting it in XML to the clipboard then deleting it. More...
 
void copy ()
 ElementScene::copy Handles the fact of copying the selection = exporting it as XML to the clipboard. More...
 
QETElementEditoreditor () const
 ElementScene::editor. More...
 
void setElementInfo (const DiagramContext &dc)
 ElementScene::setElementInfo. More...
 

Static Public Member Functions

static bool clipboardMayContainElement ()
 ElementScene::clipboardMayContainElement. More...
 

Protected Member Functions

void mouseMoveEvent (QGraphicsSceneMouseEvent *) override
 ElementScene::mouseMoveEvent. More...
 
void mousePressEvent (QGraphicsSceneMouseEvent *) override
 ElementScene::mousePressEvent. More...
 
void mouseReleaseEvent (QGraphicsSceneMouseEvent *) override
 ElementScene::mouseReleaseEvent. More...
 
void mouseDoubleClickEvent (QGraphicsSceneMouseEvent *event) override
 ElementScene::mouseDoubleClickEvent. More...
 
void keyPressEvent (QKeyEvent *event) override
 ElementScene::keyPressEvent manage key press event. More...
 
void contextMenuEvent (QGraphicsSceneContextMenuEvent *event) override
 ElementScene::contextMenuEvent Display the context menu event, only if behavior are Normal. More...
 
void drawForeground (QPainter *, const QRectF &) override
 ElementScene::drawForeground Draws the background of the editor, ie the hotspot indicator. More...
 

Private Member Functions

 ElementScene (const ElementScene &)
 
QRectF elementContentBoundingRect (const ElementContent &) const
 ElementScene::elementContentBoundingRect. More...
 
bool applyInformations (const QDomDocument &)
 ElementScene::applyInformations Applies the information (dimensions, hostpot, orientations, internal connections, names and additional information) contained in an XML document. More...
 
ElementContent loadContent (const QDomDocument &)
 ElementScene::loadContent Create and load the content describe in the xml document. More...
 
ElementContent addContent (const ElementContent &)
 ElementScene::addContent Add content content to this element. More...
 
ElementContent addContentAtPos (const ElementContent &, const QPointF &)
 ElementScene::addContentAtPos Add content content to this element. More...
 
void addPrimitive (QGraphicsItem *)
 ElementScene::addPrimitive Add a primitive to the scene by wrapping it within an ElementPrimitiveDecorator group. More...
 
void initPasteArea ()
 ElementScene::initPasteArea Initializes the paste area. More...
 
void centerElementToOrigine ()
 ElementScene::centerElementToOrigine try to center better is possible the element to the scene (the calcul isn't optimal but work good) More...
 

Static Private Member Functions

static bool zValueLessThan (QGraphicsItem *, QGraphicsItem *)
 ElementScene::zValueLessThan. More...
 

Private Attributes

NamesList m_names_list
 
QString m_informations
 List of localized names. More...
 
QString m_elmt_type
 Extra informations. More...
 
DiagramContext m_elmt_kindInfo
 element type More...
 
DiagramContext m_elmt_information
 
QGIManager m_qgi_manager
 element kind info More...
 
QUndoStack m_undo_stack
 
ESEventInterfacem_event_interface = nullptr
 
Behavior m_behavior
 
QETElementEditorm_element_editor = nullptr
 
QGraphicsRectItem * m_paste_area
 
QRectF m_defined_paste_area
 
QString m_last_copied
 
ElementPrimitiveDecoratorm_decorator = nullptr
 Decorator item displayed when at least one item is selected. More...
 
int m_x_grid
 
int m_y_grid
 
QMutex * m_decorator_lock
 

Friends

class ChangePropertiesCommand
 

Detailed Description

The ElementScene class This class is the canvas allowing the visual edition of an electrial element. It displays the various primitives composing the drawing of the element, the border due to its fixed size and its hotspot.

Member Enumeration Documentation

◆ Behavior

Enumerator
Normal 
PasteArea 
AddPart 

◆ ItemOption

Enumerator
SortByZValue 
IncludeTerminals 
IncludeHelperItems 
Selected 
NonSelected 
SelectedOrNot 

Constructor & Destructor Documentation

◆ ElementScene() [1/2]

ElementScene::ElementScene ( QETElementEditor editor,
QObject *  parent = nullptr 
)

ElementScene::ElementScene constructor.

Parameters
editor: Element editor concerned
parent: Widget parent
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◆ ~ElementScene()

ElementScene::~ElementScene ( )
override

ElementScene::~ElementScene.

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◆ ElementScene() [2/2]

ElementScene::ElementScene ( const ElementScene )
private

Member Function Documentation

◆ addContent()

ElementContent ElementScene::addContent ( const ElementContent content)
private

ElementScene::addContent Add content content to this element.

Parameters
content: content (= list of parts) to load
Returns
Content adds
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◆ addContentAtPos()

ElementContent ElementScene::addContentAtPos ( const ElementContent content,
const QPointF &  pos 
)
private

ElementScene::addContentAtPos Add content content to this element.

Parameters
content: content (= list of parts) to load
pos: Position of the upper left corner of the content after being added
Returns
Content adds
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◆ addPrimitive()

void ElementScene::addPrimitive ( QGraphicsItem *  primitive)
private

ElementScene::addPrimitive Add a primitive to the scene by wrapping it within an ElementPrimitiveDecorator group.

Parameters
primitive
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◆ applyInformations()

bool ElementScene::applyInformations ( const QDomDocument &  xml_document)
private

ElementScene::applyInformations Applies the information (dimensions, hostpot, orientations, internal connections, names and additional information) contained in an XML document.

Parameters
xml_document: Document XML a analyser
Returns
true if reading and applying the information went well, false otherwise.
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◆ behavior()

ElementScene::Behavior ElementScene::behavior ( ) const

◆ boundingRectFromXml()

QRectF ElementScene::boundingRectFromXml ( const QDomDocument &  xml_document)
virtual

ElementScene::boundingRectFromXml.

Parameters
xml_document: an XML document describing an element
Returns
the boundingRect of the element's content
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◆ centerElementToOrigine()

void ElementScene::centerElementToOrigine ( )
private

ElementScene::centerElementToOrigine try to center better is possible the element to the scene (the calcul isn't optimal but work good)

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◆ clearEventInterface()

void ElementScene::clearEventInterface ( )

ElementScene::clearEventInterface Clear the current event interface.

◆ clipboardMayContainElement()

bool ElementScene::clipboardMayContainElement ( )
static

ElementScene::clipboardMayContainElement.

Returns
true if the clipboard appears to contain an element
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◆ containsTerminals()

bool ElementScene::containsTerminals ( ) const

ElementScene::containsTerminals.

Returns
true if the element has at least one terminal, false if it has none.

◆ contextMenuEvent()

void ElementScene::contextMenuEvent ( QGraphicsSceneContextMenuEvent *  event)
overrideprotected

ElementScene::contextMenuEvent Display the context menu event, only if behavior are Normal.

Parameters
event

◆ copy()

void ElementScene::copy ( )

ElementScene::copy Handles the fact of copying the selection = exporting it as XML to the clipboard.

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◆ cut()

void ElementScene::cut ( )

ElementScene::cut Handles the fact of cutting the selection = exporting it in XML to the clipboard then deleting it.

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◆ drawForeground()

void ElementScene::drawForeground ( QPainter *  p,
const QRectF &  rect 
)
overrideprotected

ElementScene::drawForeground Draws the background of the editor, ie the hotspot indicator.

Parameters
p: The QPainter to use for drawing
rect: The rectangle of the area to be drawn

◆ editor()

QETElementEditor * ElementScene::editor ( ) const

ElementScene::editor.

Returns
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◆ elementContentBoundingRect()

QRectF ElementScene::elementContentBoundingRect ( const ElementContent content) const
private

ElementScene::elementContentBoundingRect.

Parameters
content: Content (= parts) of an element
Returns
the boundingRect of these parts, expressed in the coordinates of the scene
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◆ elementInfoChanged

void ElementScene::elementInfoChanged ( )
signal
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◆ elementInformation()

DiagramContext ElementScene::elementInformation ( ) const
inline

◆ elementKindInfo()

DiagramContext ElementScene::elementKindInfo ( ) const
inline

◆ elementSceneGeometricRect()

QRectF ElementScene::elementSceneGeometricRect ( ) const

ElementScene::elementSceneGeometricRect.

Returns
the minimum, margin-less rectangle the element can fit into, in scene coordinates. It is different from itemsBoundingRect() because it is not supposed to imply any margin.
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◆ elementType()

QString ElementScene::elementType ( ) const
inline

◆ fromXml()

void ElementScene::fromXml ( const QDomDocument &  xml_document,
const QPointF &  position = QPointF(),
bool  consider_informations = true,
ElementContent content_ptr = nullptr 
)
virtual

ElementScene::fromXml Imports the element described in an XML document. If a position is specified, the imported elements are positioned in such a way that the upper left corner of the smallest rectangle that can surround them all (the bounding rect) either at this position.

Parameters
xml_document: an XML document describing the element
position: The position of the imported parts
consider_informations: If true, additional information (dimensions, hotspot, etc.) will be taken into account
content_ptr: if this pointer to an ElementContent is different from 0, it will be filled with the content added to the element by the fromXml
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◆ getPasteArea()

void ElementScene::getPasteArea ( const QRectF &  to_paste)
virtual

ElementScene::getPasteArea.

Parameters
to_paste: Rectangle enclosing the parts to be glued
Returns
the rectangle where you will have to glue these parts

◆ informations()

QString ElementScene::informations ( ) const
inline

ElementScene::informations.

Returns
extra informations of the currently edited element
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◆ initPasteArea()

void ElementScene::initPasteArea ( )
private

ElementScene::initPasteArea Initializes the paste area.

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◆ keyPressEvent()

void ElementScene::keyPressEvent ( QKeyEvent *  event)
overrideprotected

ElementScene::keyPressEvent manage key press event.

Parameters
event
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◆ loadContent()

ElementContent ElementScene::loadContent ( const QDomDocument &  xml_document)
private

ElementScene::loadContent Create and load the content describe in the xml document.

Parameters
xml_document: xml dom document to analyze
Returns
the loaded content
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◆ managePrimitivesGroups

void ElementScene::managePrimitivesGroups ( )
slot

ElementScene::managePrimitivesGroups Ensure the decorator is adequately shown, hidden or updated so it always represents the current selection.

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◆ mouseDoubleClickEvent()

void ElementScene::mouseDoubleClickEvent ( QGraphicsSceneMouseEvent *  event)
overrideprotected

ElementScene::mouseDoubleClickEvent.

Parameters
event
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◆ mouseMoveEvent()

void ElementScene::mouseMoveEvent ( QGraphicsSceneMouseEvent *  e)
overrideprotected

ElementScene::mouseMoveEvent.

Parameters
e
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◆ mousePressEvent()

void ElementScene::mousePressEvent ( QGraphicsSceneMouseEvent *  e)
overrideprotected

ElementScene::mousePressEvent.

Parameters
e
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◆ mouseReleaseEvent()

void ElementScene::mouseReleaseEvent ( QGraphicsSceneMouseEvent *  e)
overrideprotected

ElementScene::mouseReleaseEvent.

Parameters
e
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◆ names()

NamesList ElementScene::names ( ) const
inline

ElementScene::names.

Returns
the list of names of the currently edited element

◆ needZoomFit

void ElementScene::needZoomFit ( )
signal

Signal emitted when need zoomFit.

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◆ partsAdded

void ElementScene::partsAdded ( )
signal

Signal emitted after one or several parts were added.

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◆ partsRemoved

void ElementScene::partsRemoved ( )
signal

Signal emitted after one or several parts were removed.

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◆ partsZValueChanged

void ElementScene::partsZValueChanged ( )
signal

Signal emitted when the zValue of one or several parts change.

◆ pasteAreaDefined

void ElementScene::pasteAreaDefined ( const QRectF &  )
signal

Signal emitted when users have defined the copy/paste area.

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◆ primitives()

QList< CustomElementPart * > ElementScene::primitives ( ) const
virtual

ElementScene::primitives.

Returns
the list of primitives currently present on the scene.

◆ qgiManager()

QGIManager & ElementScene::qgiManager ( )

ElementScene::qgiManager.

Returns
the QGraphicsItem manager of this item editor
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◆ reset()

void ElementScene::reset ( )
virtual

ElementScene::reset Remove all QGraphicsItems in the scene and clear the undo stack.

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◆ selectedContent()

ElementContent ElementScene::selectedContent ( ) const
virtual

ElementScene::selectedContent.

Returns
the selected graphic parts
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◆ setBehavior()

void ElementScene::setBehavior ( ElementScene::Behavior  b)

ElementScene::setBehavior Modify the current behavior of this scene.

Parameters
b
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◆ setElementInfo()

void ElementScene::setElementInfo ( const DiagramContext dc)

ElementScene::setElementInfo.

Parameters
dc
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◆ setEventInterface()

void ElementScene::setEventInterface ( ESEventInterface event_interface)

ElementScene::setEventInterface Set a new event interface.

Parameters
event_interface
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◆ setGrid()

void ElementScene::setGrid ( int  x_g,
int  y_g 
)
virtual

ElementScene::setGrid.

Parameters
x_g: Horizontal grid size
y_g: Vertical grid size
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◆ setInformations()

void ElementScene::setInformations ( const QString &  infos)
inline

ElementScene::setInformations.

Parameters
infosnew extra information for the currently edited element
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◆ setNames()

void ElementScene::setNames ( const NamesList nameslist)
inline

ElementScene::setNames.

Parameters
nameslistNew set of naes for the currently edited element

◆ slot_delete

void ElementScene::slot_delete ( )
slot

ElementScene::slot_delete Delete selected items.

◆ slot_deselectAll

void ElementScene::slot_deselectAll ( )
slot

ElementScene::slot_deselectAll deselect all item.

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◆ slot_editAuthorInformations

void ElementScene::slot_editAuthorInformations ( )
slot

ElementScene::slot_editAuthorInformations Starts a dialog to edit the additional information of this element. Concretely, this free field is intended to receive information on the author of the element, its license, etc.

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◆ slot_editNames

void ElementScene::slot_editNames ( )
slot

ElementScene::slot_editNames Launch a dialog for edit the names of the edited element.

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◆ slot_editProperties

void ElementScene::slot_editProperties ( )
slot

ElementScene::slot_editProperties Open dialog to edit the element properties.

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◆ slot_invertSelection

void ElementScene::slot_invertSelection ( )
slot

◆ slot_select

void ElementScene::slot_select ( const ElementContent content)
slot

ElementScene::slot_select Select the item in content, every others items in the scene are deselected.

Parameters
content
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◆ slot_selectAll

void ElementScene::slot_selectAll ( )
slot

ElementScene::slot_selectAll Select all items.

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◆ snapToGrid()

QPointF ElementScene::snapToGrid ( QPointF  point)

ElementScene::snapToGrid Rounds the coordinates of the point passed as a parameter so that this point is aligned with the grid.

Parameters
point: a reference to a QPointF. This object will be modified.
Returns
point
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◆ stackAction

void ElementScene::stackAction ( ElementEditionCommand command)
slot

ElementScene::stackAction Push the provided command on the undo stack.

Parameters
command
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◆ toXml()

const QDomDocument ElementScene::toXml ( bool  all_parts = true)
virtual

ElementScene::toXml Export this element as a xml file.

Parameters
all_parts: (true by default) if true, export the entire element in xml, if false, only export the selected parts.
Returns
an xml document that describe the element.
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◆ undoStack()

QUndoStack & ElementScene::undoStack ( )

ElementScene::undoStack.

Returns
the undo stack of this element editor
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◆ wasCopiedFromThisElement()

bool ElementScene::wasCopiedFromThisElement ( const QString &  clipboard_content)

ElementScene::wasCopiedFromThisElement.

Parameters
clipboard_content: character string, probably coming from the clipboard.
Returns
true if clipboard_content has been copied from this element.

◆ xGrid()

int ElementScene::xGrid ( ) const
virtual

ElementScene::xGrid.

Returns
the horizontal size of the grid

◆ yGrid()

int ElementScene::yGrid ( ) const
virtual

ElementScene::yGrid.

Returns
vertical grid size

◆ zItems()

QList< QGraphicsItem * > ElementScene::zItems ( ItemOptions  options = ItemOptions(SortByZValue  | IncludeTerminals  | SelectedOrNot)) const
virtual

ElementScene::zItems.

Parameters
options
Returns
the parts of the element ordered by increasing zValue
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◆ zValueLessThan()

bool ElementScene::zValueLessThan ( QGraphicsItem *  item1,
QGraphicsItem *  item2 
)
staticprivate

ElementScene::zValueLessThan.

Parameters
item1: QGraphicsItem
item2: QGraphicsItem
Returns
true if item1's zValue() is less than item2's.
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Friends And Related Function Documentation

◆ ChangePropertiesCommand

friend class ChangePropertiesCommand
friend

Member Data Documentation

◆ m_behavior

Behavior ElementScene::m_behavior
private

◆ m_decorator

ElementPrimitiveDecorator* ElementScene::m_decorator = nullptr
private

Decorator item displayed when at least one item is selected.

◆ m_decorator_lock

QMutex* ElementScene::m_decorator_lock
private

◆ m_defined_paste_area

QRectF ElementScene::m_defined_paste_area
private

◆ m_element_editor

QETElementEditor* ElementScene::m_element_editor = nullptr
private

◆ m_elmt_information

DiagramContext ElementScene::m_elmt_information
private

◆ m_elmt_kindInfo

DiagramContext ElementScene::m_elmt_kindInfo
private

element type

◆ m_elmt_type

QString ElementScene::m_elmt_type
private

Extra informations.

◆ m_event_interface

ESEventInterface* ElementScene::m_event_interface = nullptr
private

◆ m_informations

QString ElementScene::m_informations
private

List of localized names.

◆ m_last_copied

QString ElementScene::m_last_copied
private

◆ m_names_list

NamesList ElementScene::m_names_list
private

◆ m_paste_area

QGraphicsRectItem* ElementScene::m_paste_area
private

◆ m_qgi_manager

QGIManager ElementScene::m_qgi_manager
private

element kind info

◆ m_undo_stack

QUndoStack ElementScene::m_undo_stack
private

◆ m_x_grid

int ElementScene::m_x_grid
private

◆ m_y_grid

int ElementScene::m_y_grid
private

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