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A bracket for referencing/highlighting certain parts in the plot. Más...
Tipos públicos | |
enum | BracketStyle { bsSquare, bsRound, bsCurly, bsCalligraphic } |
Métodos públicos | |
QCPItemBracket (QCustomPlot *parentPlot) | |
QPen | pen () const |
QPen | selectedPen () const |
double | length () const |
BracketStyle | style () const |
void | setPen (const QPen &pen) |
void | setSelectedPen (const QPen &pen) |
void | setLength (double length) |
void | setStyle (BracketStyle style) |
virtual double | selectTest (const QPointF &pos, bool onlySelectable, QVariant *details=0) const |
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QCPAbstractItem (QCustomPlot *parentPlot) | |
bool | clipToAxisRect () const |
QCPAxisRect * | clipAxisRect () const |
bool | selectable () const |
bool | selected () const |
void | setClipToAxisRect (bool clip) |
void | setClipAxisRect (QCPAxisRect *rect) |
void | setSelectable (bool selectable) |
void | setSelected (bool selected) |
QList< QCPItemPosition * > | positions () const |
QList< QCPItemAnchor * > | anchors () const |
QCPItemPosition * | position (const QString &name) const |
QCPItemAnchor * | anchor (const QString &name) const |
bool | hasAnchor (const QString &name) const |
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QCPLayerable (QCustomPlot *plot, QString targetLayer="", QCPLayerable *parentLayerable=0) | |
bool | visible () const |
QCustomPlot * | parentPlot () const |
QCPLayerable * | parentLayerable () const |
QCPLayer * | layer () const |
bool | antialiased () const |
void | setVisible (bool on) |
bool | setLayer (QCPLayer *layer) |
bool | setLayer (const QString &layerName) |
void | setAntialiased (bool enabled) |
bool | realVisibility () const |
Atributos públicos | |
QCPItemPosition *const | left |
QCPItemPosition *const | right |
QCPItemAnchor *const | center |
Tipos protegidos | |
enum | AnchorIndex { aiCenter } |
Métodos protegidos | |
virtual void | draw (QCPPainter *painter) |
virtual QPointF | anchorPixelPoint (int anchorId) const |
QPen | mainPen () const |
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virtual QCP::Interaction | selectionCategory () const |
virtual QRect | clipRect () const |
virtual void | applyDefaultAntialiasingHint (QCPPainter *painter) const |
virtual void | selectEvent (QMouseEvent *event, bool additive, const QVariant &details, bool *selectionStateChanged) |
virtual void | deselectEvent (bool *selectionStateChanged) |
double | distSqrToLine (const QPointF &start, const QPointF &end, const QPointF &point) const |
double | rectSelectTest (const QRectF &rect, const QPointF &pos, bool filledRect) const |
QCPItemPosition * | createPosition (const QString &name) |
QCPItemAnchor * | createAnchor (const QString &name, int anchorId) |
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virtual void | parentPlotInitialized (QCustomPlot *parentPlot) |
void | initializeParentPlot (QCustomPlot *parentPlot) |
void | setParentLayerable (QCPLayerable *parentLayerable) |
bool | moveToLayer (QCPLayer *layer, bool prepend) |
void | applyAntialiasingHint (QCPPainter *painter, bool localAntialiased, QCP::AntialiasedElement overrideElement) const |
Atributos protegidos | |
QPen | mPen |
QPen | mSelectedPen |
double | mLength |
BracketStyle | mStyle |
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bool | mClipToAxisRect |
QPointer< QCPAxisRect > | mClipAxisRect |
QList< QCPItemPosition * > | mPositions |
QList< QCPItemAnchor * > | mAnchors |
bool | mSelectable |
bool | mSelected |
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bool | mVisible |
QCustomPlot * | mParentPlot |
QPointer< QCPLayerable > | mParentLayerable |
QCPLayer * | mLayer |
bool | mAntialiased |
Otros miembros heredados | |
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void | selectionChanged (bool selected) |
A bracket for referencing/highlighting certain parts in the plot.
It has two positions, left and right, which define the span of the bracket. If left is actually farther to the left than right, the bracket is opened to the bottom, as shown in the example image.
The bracket supports multiple styles via setStyle. The length, i.e. how far the bracket stretches away from the embraced span, can be controlled with setLength.
It provides an anchor center, to allow connection of other items, e.g. an arrow (QCPItemLine or QCPItemCurve) or a text label (QCPItemText), to the bracket.
QCPItemBracket::QCPItemBracket | ( | QCustomPlot * | parentPlot | ) |
Creates a bracket item and sets default values.
The constructed item can be added to the plot with QCustomPlot::addItem.
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virtual |
This function is used to decide whether a click hits a layerable object or not.
pos is a point in pixel coordinates on the QCustomPlot surface. This function returns the shortest pixel distance of this point to the object. If the object is either invisible or the distance couldn't be determined, -1.0 is returned. Further, if onlySelectable is true and the object is not selectable, -1.0 is returned, too.
If the item is represented not by single lines but by an area like QCPItemRect or QCPItemText, a click inside the area returns a constant value greater zero (typically the selectionTolerance of the parent QCustomPlot multiplied by 0.99). If the click lies outside the area, this function returns -1.0.
Providing a constant value for area objects allows selecting line objects even when they are obscured by such area objects, by clicking close to the lines (i.e. closer than 0.99*selectionTolerance).
The actual setting of the selection state is not done by this function. This is handled by the parent QCustomPlot when the mouseReleaseEvent occurs, and the finally selected object is notified via the selectEvent/deselectEvent methods.
details is an optional output parameter. Every layerable subclass may place any information in details. This information will be passed to selectEvent when the parent QCustomPlot decides on the basis of this selectTest call, that the object was successfully selected. The subsequent call to selectEvent will carry the details. This is useful for multi-part objects (like QCPAxis). This way, a possibly complex calculation to decide which part was clicked is only done once in selectTest. The result (i.e. the actually clicked part) can then be placed in details. So in the subsequent selectEvent, the decision which part was selected doesn't have to be done a second time for a single selection operation.
You may pass 0 as details to indicate that you are not interested in those selection details.
Implementa QCPAbstractItem.
void QCPItemBracket::setLength | ( | double | length | ) |
Sets the length in pixels how far the bracket extends in the direction towards the embraced span of the bracket (i.e. perpendicular to the left-right-direction)
void QCPItemBracket::setPen | ( | const QPen & | pen | ) |
Sets the pen that will be used to draw the bracket.
Note that when the style is bsCalligraphic, only the color will be taken from the pen, the stroke and width are ignored. To change the apparent stroke width of a calligraphic bracket, use setLength, which has a similar effect.
void QCPItemBracket::setSelectedPen | ( | const QPen & | pen | ) |
Sets the pen that will be used to draw the bracket when selected
void QCPItemBracket::setStyle | ( | QCPItemBracket::BracketStyle | style | ) |
Sets the style of the bracket, i.e. the shape/visual appearance.