Current File : /home/tjamichg/cursos.tjamich.gob.mx/main/inc/lib/mxgraph/src/js/view/mxCellRenderer.js
/**
* Copyright (c) 2006-2017, JGraph Ltd
* Copyright (c) 2006-2017, Gaudenz Alder
*/
/**
* Class: mxCellRenderer
*
* Renders cells into a document object model. The <defaultShapes> is a global
* map of shapename, constructor pairs that is used in all instances. You can
* get a list of all available shape names using the following code.
*
* In general the cell renderer is in charge of creating, redrawing and
* destroying the shape and label associated with a cell state, as well as
* some other graphical objects, namely controls and overlays. The shape
* hieararchy in the display (ie. the hierarchy in which the DOM nodes
* appear in the document) does not reflect the cell hierarchy. The shapes
* are a (flat) sequence of shapes and labels inside the draw pane of the
* graph view, with some exceptions, namely the HTML labels being placed
* directly inside the graph container for certain browsers.
*
* (code)
* mxLog.show();
* for (var i in mxCellRenderer.defaultShapes)
* {
* mxLog.debug(i);
* }
* (end)
*
* Constructor: mxCellRenderer
*
* Constructs a new cell renderer with the following built-in shapes:
* arrow, rectangle, ellipse, rhombus, image, line, label, cylinder,
* swimlane, connector, actor and cloud.
*/
function mxCellRenderer() { };
/**
* Variable: defaultShapes
*
* Static array that contains the globally registered shapes which are
* known to all instances of this class. For adding new shapes you should
* use the static <mxCellRenderer.registerShape> function.
*/
mxCellRenderer.defaultShapes = new Object();
/**
* Variable: defaultEdgeShape
*
* Defines the default shape for edges. Default is <mxConnector>.
*/
mxCellRenderer.prototype.defaultEdgeShape = mxConnector;
/**
* Variable: defaultVertexShape
*
* Defines the default shape for vertices. Default is <mxRectangleShape>.
*/
mxCellRenderer.prototype.defaultVertexShape = mxRectangleShape;
/**
* Variable: defaultTextShape
*
* Defines the default shape for labels. Default is <mxText>.
*/
mxCellRenderer.prototype.defaultTextShape = mxText;
/**
* Variable: legacyControlPosition
*
* Specifies if the folding icon should ignore the horizontal
* orientation of a swimlane. Default is true.
*/
mxCellRenderer.prototype.legacyControlPosition = true;
/**
* Variable: legacySpacing
*
* Specifies if spacing and label position should be ignored if overflow is
* fill or width. Default is true for backwards compatiblity.
*/
mxCellRenderer.prototype.legacySpacing = true;
/**
* Variable: antiAlias
*
* Anti-aliasing option for new shapes. Default is true.
*/
mxCellRenderer.prototype.antiAlias = true;
/**
* Variable: forceControlClickHandler
*
* Specifies if the enabled state of the graph should be ignored in the control
* click handler (to allow folding in disabled graphs). Default is false.
*/
mxCellRenderer.prototype.forceControlClickHandler = false;
/**
* Function: registerShape
*
* Registers the given constructor under the specified key in this instance
* of the renderer.
*
* Example:
*
* (code)
* mxCellRenderer.registerShape(mxConstants.SHAPE_RECTANGLE, mxRectangleShape);
* (end)
*
* Parameters:
*
* key - String representing the shape name.
* shape - Constructor of the <mxShape> subclass.
*/
mxCellRenderer.registerShape = function(key, shape)
{
mxCellRenderer.defaultShapes[key] = shape;
};
// Adds default shapes into the default shapes array
mxCellRenderer.registerShape(mxConstants.SHAPE_RECTANGLE, mxRectangleShape);
mxCellRenderer.registerShape(mxConstants.SHAPE_ELLIPSE, mxEllipse);
mxCellRenderer.registerShape(mxConstants.SHAPE_RHOMBUS, mxRhombus);
mxCellRenderer.registerShape(mxConstants.SHAPE_CYLINDER, mxCylinder);
mxCellRenderer.registerShape(mxConstants.SHAPE_CONNECTOR, mxConnector);
mxCellRenderer.registerShape(mxConstants.SHAPE_ACTOR, mxActor);
mxCellRenderer.registerShape(mxConstants.SHAPE_TRIANGLE, mxTriangle);
mxCellRenderer.registerShape(mxConstants.SHAPE_HEXAGON, mxHexagon);
mxCellRenderer.registerShape(mxConstants.SHAPE_CLOUD, mxCloud);
mxCellRenderer.registerShape(mxConstants.SHAPE_LINE, mxLine);
mxCellRenderer.registerShape(mxConstants.SHAPE_ARROW, mxArrow);
mxCellRenderer.registerShape(mxConstants.SHAPE_ARROW_CONNECTOR, mxArrowConnector);
mxCellRenderer.registerShape(mxConstants.SHAPE_DOUBLE_ELLIPSE, mxDoubleEllipse);
mxCellRenderer.registerShape(mxConstants.SHAPE_SWIMLANE, mxSwimlane);
mxCellRenderer.registerShape(mxConstants.SHAPE_IMAGE, mxImageShape);
mxCellRenderer.registerShape(mxConstants.SHAPE_LABEL, mxLabel);
/**
* Function: initializeShape
*
* Initializes the shape in the given state by calling its init method with
* the correct container after configuring it using <configureShape>.
*
* Parameters:
*
* state - <mxCellState> for which the shape should be initialized.
*/
mxCellRenderer.prototype.initializeShape = function(state)
{
state.shape.dialect = state.view.graph.dialect;
this.configureShape(state);
state.shape.init(state.view.getDrawPane());
};
/**
* Function: createShape
*
* Creates and returns the shape for the given cell state.
*
* Parameters:
*
* state - <mxCellState> for which the shape should be created.
*/
mxCellRenderer.prototype.createShape = function(state)
{
var shape = null;
if (state.style != null)
{
// Checks if there is a stencil for the name and creates
// a shape instance for the stencil if one exists
var stencil = mxStencilRegistry.getStencil(state.style[mxConstants.STYLE_SHAPE]);
if (stencil != null)
{
shape = new mxShape(stencil);
}
else
{
var ctor = this.getShapeConstructor(state);
shape = new ctor();
}
}
return shape;
};
/**
* Function: createIndicatorShape
*
* Creates the indicator shape for the given cell state.
*
* Parameters:
*
* state - <mxCellState> for which the indicator shape should be created.
*/
mxCellRenderer.prototype.createIndicatorShape = function(state)
{
state.shape.indicatorShape = this.getShape(state.view.graph.getIndicatorShape(state));
};
/**
* Function: getShape
*
* Returns the shape for the given name from <defaultShapes>.
*/
mxCellRenderer.prototype.getShape = function(name)
{
return (name != null) ? mxCellRenderer.defaultShapes[name] : null;
};
/**
* Function: getShapeConstructor
*
* Returns the constructor to be used for creating the shape.
*/
mxCellRenderer.prototype.getShapeConstructor = function(state)
{
var ctor = this.getShape(state.style[mxConstants.STYLE_SHAPE]);
if (ctor == null)
{
ctor = (state.view.graph.getModel().isEdge(state.cell)) ?
this.defaultEdgeShape : this.defaultVertexShape;
}
return ctor;
};
/**
* Function: configureShape
*
* Configures the shape for the given cell state.
*
* Parameters:
*
* state - <mxCellState> for which the shape should be configured.
*/
mxCellRenderer.prototype.configureShape = function(state)
{
state.shape.apply(state);
state.shape.image = state.view.graph.getImage(state);
state.shape.indicatorColor = state.view.graph.getIndicatorColor(state);
state.shape.indicatorStrokeColor = state.style[mxConstants.STYLE_INDICATOR_STROKECOLOR];
state.shape.indicatorGradientColor = state.view.graph.getIndicatorGradientColor(state);
state.shape.indicatorDirection = state.style[mxConstants.STYLE_INDICATOR_DIRECTION];
state.shape.indicatorImage = state.view.graph.getIndicatorImage(state);
this.postConfigureShape(state);
};
/**
* Function: postConfigureShape
*
* Replaces any reserved words used for attributes, eg. inherit,
* indicated or swimlane for colors in the shape for the given state.
* This implementation resolves these keywords on the fill, stroke
* and gradient color keys.
*/
mxCellRenderer.prototype.postConfigureShape = function(state)
{
if (state.shape != null)
{
this.resolveColor(state, 'indicatorColor', mxConstants.STYLE_FILLCOLOR);
this.resolveColor(state, 'indicatorGradientColor', mxConstants.STYLE_GRADIENTCOLOR);
this.resolveColor(state, 'fill', mxConstants.STYLE_FILLCOLOR);
this.resolveColor(state, 'stroke', mxConstants.STYLE_STROKECOLOR);
this.resolveColor(state, 'gradient', mxConstants.STYLE_GRADIENTCOLOR);
}
};
/**
* Function: checkPlaceholderStyles
*
* Resolves special keywords 'inherit', 'indicated' and 'swimlane' and sets
* the respective color on the shape.
*/
mxCellRenderer.prototype.checkPlaceholderStyles = function(state)
{
// LATER: Check if the color has actually changed
if (state.style != null)
{
var values = ['inherit', 'swimlane', 'indicated'];
var styles = [mxConstants.STYLE_FILLCOLOR, mxConstants.STYLE_STROKECOLOR, mxConstants.STYLE_GRADIENTCOLOR];
for (var i = 0; i < styles.length; i++)
{
if (mxUtils.indexOf(values, state.style[styles[i]]) >= 0)
{
return true;
}
}
}
return false;
};
/**
* Function: resolveColor
*
* Resolves special keywords 'inherit', 'indicated' and 'swimlane' and sets
* the respective color on the shape.
*/
mxCellRenderer.prototype.resolveColor = function(state, field, key)
{
var value = state.shape[field];
var graph = state.view.graph;
var referenced = null;
if (value == 'inherit')
{
referenced = graph.model.getParent(state.cell);
}
else if (value == 'swimlane')
{
state.shape[field] = (key == mxConstants.STYLE_STROKECOLOR) ? '#000000' : '#ffffff';
if (graph.model.getTerminal(state.cell, false) != null)
{
referenced = graph.model.getTerminal(state.cell, false);
}
else
{
referenced = state.cell;
}
referenced = graph.getSwimlane(referenced);
key = graph.swimlaneIndicatorColorAttribute;
}
else if (value == 'indicated')
{
state.shape[field] = state.shape.indicatorColor;
}
if (referenced != null)
{
var rstate = graph.getView().getState(referenced);
state.shape[field] = null;
if (rstate != null)
{
if (rstate.shape != null && field != 'indicatorColor')
{
state.shape[field] = rstate.shape[field];
}
else
{
state.shape[field] = rstate.style[key];
}
}
}
};
/**
* Function: getLabelValue
*
* Returns the value to be used for the label.
*
* Parameters:
*
* state - <mxCellState> for which the label should be created.
*/
mxCellRenderer.prototype.getLabelValue = function(state)
{
return state.view.graph.getLabel(state.cell);
};
/**
* Function: createLabel
*
* Creates the label for the given cell state.
*
* Parameters:
*
* state - <mxCellState> for which the label should be created.
*/
mxCellRenderer.prototype.createLabel = function(state, value)
{
var graph = state.view.graph;
var isEdge = graph.getModel().isEdge(state.cell);
if (state.style[mxConstants.STYLE_FONTSIZE] > 0 || state.style[mxConstants.STYLE_FONTSIZE] == null)
{
// Avoids using DOM node for empty labels
var isForceHtml = (graph.isHtmlLabel(state.cell) || (value != null && mxUtils.isNode(value)));
state.text = new this.defaultTextShape(value, new mxRectangle(),
(state.style[mxConstants.STYLE_ALIGN] || mxConstants.ALIGN_CENTER),
graph.getVerticalAlign(state),
state.style[mxConstants.STYLE_FONTCOLOR],
state.style[mxConstants.STYLE_FONTFAMILY],
state.style[mxConstants.STYLE_FONTSIZE],
state.style[mxConstants.STYLE_FONTSTYLE],
state.style[mxConstants.STYLE_SPACING],
state.style[mxConstants.STYLE_SPACING_TOP],
state.style[mxConstants.STYLE_SPACING_RIGHT],
state.style[mxConstants.STYLE_SPACING_BOTTOM],
state.style[mxConstants.STYLE_SPACING_LEFT],
state.style[mxConstants.STYLE_HORIZONTAL],
state.style[mxConstants.STYLE_LABEL_BACKGROUNDCOLOR],
state.style[mxConstants.STYLE_LABEL_BORDERCOLOR],
graph.isWrapping(state.cell) && graph.isHtmlLabel(state.cell),
graph.isLabelClipped(state.cell),
state.style[mxConstants.STYLE_OVERFLOW],
state.style[mxConstants.STYLE_LABEL_PADDING],
mxUtils.getValue(state.style, mxConstants.STYLE_TEXT_DIRECTION, mxConstants.DEFAULT_TEXT_DIRECTION));
state.text.opacity = mxUtils.getValue(state.style, mxConstants.STYLE_TEXT_OPACITY, 100);
state.text.dialect = (isForceHtml) ? mxConstants.DIALECT_STRICTHTML : state.view.graph.dialect;
state.text.style = state.style;
state.text.state = state;
this.initializeLabel(state, state.text);
// Workaround for touch devices routing all events for a mouse gesture
// (down, move, up) via the initial DOM node. IE additionally redirects
// the event via the initial DOM node but the event source is the node
// under the mouse, so we need to check if this is the case and force
// getCellAt for the subsequent mouseMoves and the final mouseUp.
var forceGetCell = false;
var getState = function(evt)
{
var result = state;
if (mxClient.IS_TOUCH || forceGetCell)
{
var x = mxEvent.getClientX(evt);
var y = mxEvent.getClientY(evt);
// Dispatches the drop event to the graph which
// consumes and executes the source function
var pt = mxUtils.convertPoint(graph.container, x, y);
result = graph.view.getState(graph.getCellAt(pt.x, pt.y));
}
return result;
};
// TODO: Add handling for special touch device gestures
mxEvent.addGestureListeners(state.text.node,
mxUtils.bind(this, function(evt)
{
if (this.isLabelEvent(state, evt))
{
graph.fireMouseEvent(mxEvent.MOUSE_DOWN, new mxMouseEvent(evt, state));
forceGetCell = graph.dialect != mxConstants.DIALECT_SVG &&
mxEvent.getSource(evt).nodeName == 'IMG';
}
}),
mxUtils.bind(this, function(evt)
{
if (this.isLabelEvent(state, evt))
{
graph.fireMouseEvent(mxEvent.MOUSE_MOVE, new mxMouseEvent(evt, getState(evt)));
}
}),
mxUtils.bind(this, function(evt)
{
if (this.isLabelEvent(state, evt))
{
graph.fireMouseEvent(mxEvent.MOUSE_UP, new mxMouseEvent(evt, getState(evt)));
forceGetCell = false;
}
})
);
// Uses double click timeout in mxGraph for quirks mode
if (graph.nativeDblClickEnabled)
{
mxEvent.addListener(state.text.node, 'dblclick',
mxUtils.bind(this, function(evt)
{
if (this.isLabelEvent(state, evt))
{
graph.dblClick(evt, state.cell);
mxEvent.consume(evt);
}
})
);
}
}
};
/**
* Function: initializeLabel
*
* Initiailzes the label with a suitable container.
*
* Parameters:
*
* state - <mxCellState> whose label should be initialized.
*/
mxCellRenderer.prototype.initializeLabel = function(state, shape)
{
if (mxClient.IS_SVG && mxClient.NO_FO && shape.dialect != mxConstants.DIALECT_SVG)
{
shape.init(state.view.graph.container);
}
else
{
shape.init(state.view.getDrawPane());
}
};
/**
* Function: createCellOverlays
*
* Creates the actual shape for showing the overlay for the given cell state.
*
* Parameters:
*
* state - <mxCellState> for which the overlay should be created.
*/
mxCellRenderer.prototype.createCellOverlays = function(state)
{
var graph = state.view.graph;
var overlays = graph.getCellOverlays(state.cell);
var dict = null;
if (overlays != null)
{
dict = new mxDictionary();
for (var i = 0; i < overlays.length; i++)
{
var shape = (state.overlays != null) ? state.overlays.remove(overlays[i]) : null;
if (shape == null)
{
var tmp = new mxImageShape(new mxRectangle(), overlays[i].image.src);
tmp.dialect = state.view.graph.dialect;
tmp.preserveImageAspect = false;
tmp.overlay = overlays[i];
this.initializeOverlay(state, tmp);
this.installCellOverlayListeners(state, overlays[i], tmp);
if (overlays[i].cursor != null)
{
tmp.node.style.cursor = overlays[i].cursor;
}
dict.put(overlays[i], tmp);
}
else
{
dict.put(overlays[i], shape);
}
}
}
// Removes unused
if (state.overlays != null)
{
state.overlays.visit(function(id, shape)
{
shape.destroy();
});
}
state.overlays = dict;
};
/**
* Function: initializeOverlay
*
* Initializes the given overlay.
*
* Parameters:
*
* state - <mxCellState> for which the overlay should be created.
* overlay - <mxImageShape> that represents the overlay.
*/
mxCellRenderer.prototype.initializeOverlay = function(state, overlay)
{
overlay.init(state.view.getOverlayPane());
};
/**
* Function: installOverlayListeners
*
* Installs the listeners for the given <mxCellState>, <mxCellOverlay> and
* <mxShape> that represents the overlay.
*/
mxCellRenderer.prototype.installCellOverlayListeners = function(state, overlay, shape)
{
var graph = state.view.graph;
mxEvent.addListener(shape.node, 'click', function (evt)
{
if (graph.isEditing())
{
graph.stopEditing(!graph.isInvokesStopCellEditing());
}
overlay.fireEvent(new mxEventObject(mxEvent.CLICK,
'event', evt, 'cell', state.cell));
});
mxEvent.addGestureListeners(shape.node,
function (evt)
{
mxEvent.consume(evt);
},
function (evt)
{
graph.fireMouseEvent(mxEvent.MOUSE_MOVE,
new mxMouseEvent(evt, state));
});
if (mxClient.IS_TOUCH)
{
mxEvent.addListener(shape.node, 'touchend', function (evt)
{
overlay.fireEvent(new mxEventObject(mxEvent.CLICK,
'event', evt, 'cell', state.cell));
});
}
};
/**
* Function: createControl
*
* Creates the control for the given cell state.
*
* Parameters:
*
* state - <mxCellState> for which the control should be created.
*/
mxCellRenderer.prototype.createControl = function(state)
{
var graph = state.view.graph;
var image = graph.getFoldingImage(state);
if (graph.foldingEnabled && image != null)
{
if (state.control == null)
{
var b = new mxRectangle(0, 0, image.width, image.height);
state.control = new mxImageShape(b, image.src);
state.control.preserveImageAspect = false;
state.control.dialect = graph.dialect;
this.initControl(state, state.control, true, this.createControlClickHandler(state));
}
}
else if (state.control != null)
{
state.control.destroy();
state.control = null;
}
};
/**
* Function: createControlClickHandler
*
* Hook for creating the click handler for the folding icon.
*
* Parameters:
*
* state - <mxCellState> whose control click handler should be returned.
*/
mxCellRenderer.prototype.createControlClickHandler = function(state)
{
var graph = state.view.graph;
return mxUtils.bind(this, function (evt)
{
if (this.forceControlClickHandler || graph.isEnabled())
{
var collapse = !graph.isCellCollapsed(state.cell);
graph.foldCells(collapse, false, [state.cell], null, evt);
mxEvent.consume(evt);
}
});
};
/**
* Function: initControl
*
* Initializes the given control and returns the corresponding DOM node.
*
* Parameters:
*
* state - <mxCellState> for which the control should be initialized.
* control - <mxShape> to be initialized.
* handleEvents - Boolean indicating if mousedown and mousemove should fire events via the graph.
* clickHandler - Optional function to implement clicks on the control.
*/
mxCellRenderer.prototype.initControl = function(state, control, handleEvents, clickHandler)
{
var graph = state.view.graph;
// In the special case where the label is in HTML and the display is SVG the image
// should go into the graph container directly in order to be clickable. Otherwise
// it is obscured by the HTML label that overlaps the cell.
var isForceHtml = graph.isHtmlLabel(state.cell) && mxClient.NO_FO &&
graph.dialect == mxConstants.DIALECT_SVG;
if (isForceHtml)
{
control.dialect = mxConstants.DIALECT_PREFERHTML;
control.init(graph.container);
control.node.style.zIndex = 1;
}
else
{
control.init(state.view.getOverlayPane());
}
var node = control.innerNode || control.node;
// Workaround for missing click event on iOS is to check tolerance below
if (clickHandler != null && !mxClient.IS_IOS)
{
if (graph.isEnabled())
{
node.style.cursor = 'pointer';
}
mxEvent.addListener(node, 'click', clickHandler);
}
if (handleEvents)
{
var first = null;
mxEvent.addGestureListeners(node,
function (evt)
{
first = new mxPoint(mxEvent.getClientX(evt), mxEvent.getClientY(evt));
graph.fireMouseEvent(mxEvent.MOUSE_DOWN, new mxMouseEvent(evt, state));
mxEvent.consume(evt);
},
function (evt)
{
graph.fireMouseEvent(mxEvent.MOUSE_MOVE, new mxMouseEvent(evt, state));
},
function (evt)
{
graph.fireMouseEvent(mxEvent.MOUSE_UP, new mxMouseEvent(evt, state));
mxEvent.consume(evt);
});
// Uses capture phase for event interception to stop bubble phase
if (clickHandler != null && mxClient.IS_IOS)
{
node.addEventListener('touchend', function(evt)
{
if (first != null)
{
var tol = graph.tolerance;
if (Math.abs(first.x - mxEvent.getClientX(evt)) < tol &&
Math.abs(first.y - mxEvent.getClientY(evt)) < tol)
{
clickHandler.call(clickHandler, evt);
mxEvent.consume(evt);
}
}
}, true);
}
}
return node;
};
/**
* Function: isShapeEvent
*
* Returns true if the event is for the shape of the given state. This
* implementation always returns true.
*
* Parameters:
*
* state - <mxCellState> whose shape fired the event.
* evt - Mouse event which was fired.
*/
mxCellRenderer.prototype.isShapeEvent = function(state, evt)
{
return true;
};
/**
* Function: isLabelEvent
*
* Returns true if the event is for the label of the given state. This
* implementation always returns true.
*
* Parameters:
*
* state - <mxCellState> whose label fired the event.
* evt - Mouse event which was fired.
*/
mxCellRenderer.prototype.isLabelEvent = function(state, evt)
{
return true;
};
/**
* Function: installListeners
*
* Installs the event listeners for the given cell state.
*
* Parameters:
*
* state - <mxCellState> for which the event listeners should be isntalled.
*/
mxCellRenderer.prototype.installListeners = function(state)
{
var graph = state.view.graph;
// Workaround for touch devices routing all events for a mouse
// gesture (down, move, up) via the initial DOM node. Same for
// HTML images in all IE versions (VML images are working).
var getState = function(evt)
{
var result = state;
if ((graph.dialect != mxConstants.DIALECT_SVG && mxEvent.getSource(evt).nodeName == 'IMG') || mxClient.IS_TOUCH)
{
var x = mxEvent.getClientX(evt);
var y = mxEvent.getClientY(evt);
// Dispatches the drop event to the graph which
// consumes and executes the source function
var pt = mxUtils.convertPoint(graph.container, x, y);
result = graph.view.getState(graph.getCellAt(pt.x, pt.y));
}
return result;
};
mxEvent.addGestureListeners(state.shape.node,
mxUtils.bind(this, function(evt)
{
if (this.isShapeEvent(state, evt))
{
graph.fireMouseEvent(mxEvent.MOUSE_DOWN, new mxMouseEvent(evt, state));
}
}),
mxUtils.bind(this, function(evt)
{
if (this.isShapeEvent(state, evt))
{
graph.fireMouseEvent(mxEvent.MOUSE_MOVE, new mxMouseEvent(evt, getState(evt)));
}
}),
mxUtils.bind(this, function(evt)
{
if (this.isShapeEvent(state, evt))
{
graph.fireMouseEvent(mxEvent.MOUSE_UP, new mxMouseEvent(evt, getState(evt)));
}
})
);
// Uses double click timeout in mxGraph for quirks mode
if (graph.nativeDblClickEnabled)
{
mxEvent.addListener(state.shape.node, 'dblclick',
mxUtils.bind(this, function(evt)
{
if (this.isShapeEvent(state, evt))
{
graph.dblClick(evt, state.cell);
mxEvent.consume(evt);
}
})
);
}
};
/**
* Function: redrawLabel
*
* Redraws the label for the given cell state.
*
* Parameters:
*
* state - <mxCellState> whose label should be redrawn.
*/
mxCellRenderer.prototype.redrawLabel = function(state, forced)
{
var graph = state.view.graph;
var value = this.getLabelValue(state);
var wrapping = graph.isWrapping(state.cell);
var clipping = graph.isLabelClipped(state.cell);
var isForceHtml = (state.view.graph.isHtmlLabel(state.cell) || (value != null && mxUtils.isNode(value)));
var dialect = (isForceHtml) ? mxConstants.DIALECT_STRICTHTML : state.view.graph.dialect;
var overflow = state.style[mxConstants.STYLE_OVERFLOW] || 'visible';
if (state.text != null && (state.text.wrap != wrapping || state.text.clipped != clipping ||
state.text.overflow != overflow || state.text.dialect != dialect))
{
state.text.destroy();
state.text = null;
}
if (state.text == null && value != null && (mxUtils.isNode(value) || value.length > 0))
{
this.createLabel(state, value);
}
else if (state.text != null && (value == null || value.length == 0))
{
state.text.destroy();
state.text = null;
}
if (state.text != null)
{
// Forced is true if the style has changed, so to get the updated
// result in getLabelBounds we apply the new style to the shape
if (forced)
{
// Checks if a full repaint is needed
if (state.text.lastValue != null && this.isTextShapeInvalid(state, state.text))
{
// Forces a full repaint
state.text.lastValue = null;
}
state.text.resetStyles();
state.text.apply(state);
// Special case where value is obtained via hook in graph
state.text.valign = graph.getVerticalAlign(state);
}
var bounds = this.getLabelBounds(state);
var nextScale = this.getTextScale(state);
if (forced || state.text.value != value || state.text.isWrapping != wrapping ||
state.text.overflow != overflow || state.text.isClipping != clipping ||
state.text.scale != nextScale || state.text.dialect != dialect ||
!state.text.bounds.equals(bounds))
{
// Forces an update of the text bounding box
if (state.text.bounds.width != 0 && state.unscaledWidth != null &&
Math.round((state.text.bounds.width /
state.text.scale * nextScale) - bounds.width) != 0)
{
state.unscaledWidth = null;
}
state.text.dialect = dialect;
state.text.value = value;
state.text.bounds = bounds;
state.text.scale = nextScale;
state.text.wrap = wrapping;
state.text.clipped = clipping;
state.text.overflow = overflow;
// Preserves visible state
var vis = state.text.node.style.visibility;
this.redrawLabelShape(state.text);
state.text.node.style.visibility = vis;
}
}
};
/**
* Function: isTextShapeInvalid
*
* Returns true if the style for the text shape has changed.
*
* Parameters:
*
* state - <mxCellState> whose label should be checked.
* shape - <mxText> shape to be checked.
*/
mxCellRenderer.prototype.isTextShapeInvalid = function(state, shape)
{
function check(property, stylename, defaultValue)
{
// Workaround for spacing added to directional spacing
if (stylename == 'spacingTop' || stylename == 'spacingRight' ||
stylename == 'spacingBottom' || stylename == 'spacingLeft')
{
result = parseFloat(shape[property]) - parseFloat(shape.spacing) !=
(state.style[stylename] || defaultValue);
}
else
{
result = shape[property] != (state.style[stylename] || defaultValue);
}
return result;
};
return check('fontStyle', mxConstants.STYLE_FONTSTYLE, mxConstants.DEFAULT_FONTSTYLE) ||
check('family', mxConstants.STYLE_FONTFAMILY, mxConstants.DEFAULT_FONTFAMILY) ||
check('size', mxConstants.STYLE_FONTSIZE, mxConstants.DEFAULT_FONTSIZE) ||
check('color', mxConstants.STYLE_FONTCOLOR, 'black') ||
check('align', mxConstants.STYLE_ALIGN, '') ||
check('valign', mxConstants.STYLE_VERTICAL_ALIGN, '') ||
check('spacing', mxConstants.STYLE_SPACING, 2) ||
check('spacingTop', mxConstants.STYLE_SPACING_TOP, 0) ||
check('spacingRight', mxConstants.STYLE_SPACING_RIGHT, 0) ||
check('spacingBottom', mxConstants.STYLE_SPACING_BOTTOM, 0) ||
check('spacingLeft', mxConstants.STYLE_SPACING_LEFT, 0) ||
check('horizontal', mxConstants.STYLE_HORIZONTAL, true) ||
check('background', mxConstants.STYLE_LABEL_BACKGROUNDCOLOR) ||
check('border', mxConstants.STYLE_LABEL_BORDERCOLOR) ||
check('opacity', mxConstants.STYLE_TEXT_OPACITY, 100) ||
check('textDirection', mxConstants.STYLE_TEXT_DIRECTION, mxConstants.DEFAULT_TEXT_DIRECTION);
};
/**
* Function: redrawLabelShape
*
* Called to invoked redraw on the given text shape.
*
* Parameters:
*
* shape - <mxText> shape to be redrawn.
*/
mxCellRenderer.prototype.redrawLabelShape = function(shape)
{
shape.redraw();
};
/**
* Function: getTextScale
*
* Returns the scaling used for the label of the given state
*
* Parameters:
*
* state - <mxCellState> whose label scale should be returned.
*/
mxCellRenderer.prototype.getTextScale = function(state)
{
return state.view.scale;
};
/**
* Function: getLabelBounds
*
* Returns the bounds to be used to draw the label of the given state.
*
* Parameters:
*
* state - <mxCellState> whose label bounds should be returned.
*/
mxCellRenderer.prototype.getLabelBounds = function(state)
{
var graph = state.view.graph;
var scale = state.view.scale;
var isEdge = graph.getModel().isEdge(state.cell);
var bounds = new mxRectangle(state.absoluteOffset.x, state.absoluteOffset.y);
if (isEdge)
{
var spacing = state.text.getSpacing();
bounds.x += spacing.x * scale;
bounds.y += spacing.y * scale;
var geo = graph.getCellGeometry(state.cell);
if (geo != null)
{
bounds.width = Math.max(0, geo.width * scale);
bounds.height = Math.max(0, geo.height * scale);
}
}
else
{
// Inverts label position
if (state.text.isPaintBoundsInverted())
{
var tmp = bounds.x;
bounds.x = bounds.y;
bounds.y = tmp;
}
bounds.x += state.x;
bounds.y += state.y;
// Minimum of 1 fixes alignment bug in HTML labels
bounds.width = Math.max(1, state.width);
bounds.height = Math.max(1, state.height);
var sc = mxUtils.getValue(state.style, mxConstants.STYLE_STROKECOLOR, mxConstants.NONE);
if (sc != mxConstants.NONE && sc != '')
{
var s = parseFloat(mxUtils.getValue(state.style, mxConstants.STYLE_STROKEWIDTH, 1)) * scale;
var dx = 1 + Math.floor((s - 1) / 2);
var dh = Math.floor(s + 1);
bounds.x += dx;
bounds.y += dx;
bounds.width -= dh;
bounds.height -= dh;
}
}
if (state.text.isPaintBoundsInverted())
{
// Rotates around center of state
var t = (state.width - state.height) / 2;
bounds.x += t;
bounds.y -= t;
var tmp = bounds.width;
bounds.width = bounds.height;
bounds.height = tmp;
}
// Shape can modify its label bounds
if (state.shape != null)
{
var hpos = mxUtils.getValue(state.style, mxConstants.STYLE_LABEL_POSITION, mxConstants.ALIGN_CENTER);
var vpos = mxUtils.getValue(state.style, mxConstants.STYLE_VERTICAL_LABEL_POSITION, mxConstants.ALIGN_MIDDLE);
if (hpos == mxConstants.ALIGN_CENTER && vpos == mxConstants.ALIGN_MIDDLE)
{
bounds = state.shape.getLabelBounds(bounds);
}
}
// Label width style overrides actual label width
var lw = mxUtils.getValue(state.style, mxConstants.STYLE_LABEL_WIDTH, null);
if (lw != null)
{
bounds.width = parseFloat(lw) * scale;
}
if (!isEdge)
{
this.rotateLabelBounds(state, bounds);
}
return bounds;
};
/**
* Function: rotateLabelBounds
*
* Adds the shape rotation to the given label bounds and
* applies the alignment and offsets.
*
* Parameters:
*
* state - <mxCellState> whose label bounds should be rotated.
* bounds - <mxRectangle> the rectangle to be rotated.
*/
mxCellRenderer.prototype.rotateLabelBounds = function(state, bounds)
{
bounds.y -= state.text.margin.y * bounds.height;
bounds.x -= state.text.margin.x * bounds.width;
if (!this.legacySpacing || (state.style[mxConstants.STYLE_OVERFLOW] != 'fill' && state.style[mxConstants.STYLE_OVERFLOW] != 'width'))
{
var s = state.view.scale;
var spacing = state.text.getSpacing();
bounds.x += spacing.x * s;
bounds.y += spacing.y * s;
var hpos = mxUtils.getValue(state.style, mxConstants.STYLE_LABEL_POSITION, mxConstants.ALIGN_CENTER);
var vpos = mxUtils.getValue(state.style, mxConstants.STYLE_VERTICAL_LABEL_POSITION, mxConstants.ALIGN_MIDDLE);
var lw = mxUtils.getValue(state.style, mxConstants.STYLE_LABEL_WIDTH, null);
bounds.width = Math.max(0, bounds.width - ((hpos == mxConstants.ALIGN_CENTER && lw == null) ? (state.text.spacingLeft * s + state.text.spacingRight * s) : 0));
bounds.height = Math.max(0, bounds.height - ((vpos == mxConstants.ALIGN_MIDDLE) ? (state.text.spacingTop * s + state.text.spacingBottom * s) : 0));
}
var theta = state.text.getTextRotation();
// Only needed if rotated around another center
if (theta != 0 && state != null && state.view.graph.model.isVertex(state.cell))
{
var cx = state.getCenterX();
var cy = state.getCenterY();
if (bounds.x != cx || bounds.y != cy)
{
var rad = theta * (Math.PI / 180);
pt = mxUtils.getRotatedPoint(new mxPoint(bounds.x, bounds.y),
Math.cos(rad), Math.sin(rad), new mxPoint(cx, cy));
bounds.x = pt.x;
bounds.y = pt.y;
}
}
};
/**
* Function: redrawCellOverlays
*
* Redraws the overlays for the given cell state.
*
* Parameters:
*
* state - <mxCellState> whose overlays should be redrawn.
*/
mxCellRenderer.prototype.redrawCellOverlays = function(state, forced)
{
this.createCellOverlays(state);
if (state.overlays != null)
{
var rot = mxUtils.mod(mxUtils.getValue(state.style, mxConstants.STYLE_ROTATION, 0), 90);
var rad = mxUtils.toRadians(rot);
var cos = Math.cos(rad);
var sin = Math.sin(rad);
state.overlays.visit(function(id, shape)
{
var bounds = shape.overlay.getBounds(state);
if (!state.view.graph.getModel().isEdge(state.cell))
{
if (state.shape != null && rot != 0)
{
var cx = bounds.getCenterX();
var cy = bounds.getCenterY();
var point = mxUtils.getRotatedPoint(new mxPoint(cx, cy), cos, sin,
new mxPoint(state.getCenterX(), state.getCenterY()));
cx = point.x;
cy = point.y;
bounds.x = Math.round(cx - bounds.width / 2);
bounds.y = Math.round(cy - bounds.height / 2);
}
}
if (forced || shape.bounds == null || shape.scale != state.view.scale ||
!shape.bounds.equals(bounds))
{
shape.bounds = bounds;
shape.scale = state.view.scale;
shape.redraw();
}
});
}
};
/**
* Function: redrawControl
*
* Redraws the control for the given cell state.
*
* Parameters:
*
* state - <mxCellState> whose control should be redrawn.
*/
mxCellRenderer.prototype.redrawControl = function(state, forced)
{
var image = state.view.graph.getFoldingImage(state);
if (state.control != null && image != null)
{
var bounds = this.getControlBounds(state, image.width, image.height);
var r = (this.legacyControlPosition) ?
mxUtils.getValue(state.style, mxConstants.STYLE_ROTATION, 0) :
state.shape.getTextRotation();
var s = state.view.scale;
if (forced || state.control.scale != s || !state.control.bounds.equals(bounds) ||
state.control.rotation != r)
{
state.control.rotation = r;
state.control.bounds = bounds;
state.control.scale = s;
state.control.redraw();
}
}
};
/**
* Function: getControlBounds
*
* Returns the bounds to be used to draw the control (folding icon) of the
* given state.
*/
mxCellRenderer.prototype.getControlBounds = function(state, w, h)
{
if (state.control != null)
{
var s = state.view.scale;
var cx = state.getCenterX();
var cy = state.getCenterY();
if (!state.view.graph.getModel().isEdge(state.cell))
{
cx = state.x + w * s;
cy = state.y + h * s;
if (state.shape != null)
{
// TODO: Factor out common code
var rot = state.shape.getShapeRotation();
if (this.legacyControlPosition)
{
rot = mxUtils.getValue(state.style, mxConstants.STYLE_ROTATION, 0);
}
else
{
if (state.shape.isPaintBoundsInverted())
{
var t = (state.width - state.height) / 2;
cx += t;
cy -= t;
}
}
if (rot != 0)
{
var rad = mxUtils.toRadians(rot);
var cos = Math.cos(rad);
var sin = Math.sin(rad);
var point = mxUtils.getRotatedPoint(new mxPoint(cx, cy), cos, sin,
new mxPoint(state.getCenterX(), state.getCenterY()));
cx = point.x;
cy = point.y;
}
}
}
return (state.view.graph.getModel().isEdge(state.cell)) ?
new mxRectangle(Math.round(cx - w / 2 * s), Math.round(cy - h / 2 * s), Math.round(w * s), Math.round(h * s))
: new mxRectangle(Math.round(cx - w / 2 * s), Math.round(cy - h / 2 * s), Math.round(w * s), Math.round(h * s));
}
return null;
};
/**
* Function: insertStateAfter
*
* Inserts the given array of <mxShapes> after the given nodes in the DOM.
*
* Parameters:
*
* shapes - Array of <mxShapes> to be inserted.
* node - Node in <drawPane> after which the shapes should be inserted.
* htmlNode - Node in the graph container after which the shapes should be inserted that
* will not go into the <drawPane> (eg. HTML labels without foreignObjects).
*/
mxCellRenderer.prototype.insertStateAfter = function(state, node, htmlNode)
{
var shapes = this.getShapesForState(state);
for (var i = 0; i < shapes.length; i++)
{
if (shapes[i] != null && shapes[i].node != null)
{
var html = shapes[i].node.parentNode != state.view.getDrawPane() &&
shapes[i].node.parentNode != state.view.getOverlayPane();
var temp = (html) ? htmlNode : node;
if (temp != null && temp.nextSibling != shapes[i].node)
{
if (temp.nextSibling == null)
{
temp.parentNode.appendChild(shapes[i].node);
}
else
{
temp.parentNode.insertBefore(shapes[i].node, temp.nextSibling);
}
}
else if (temp == null)
{
// Special case: First HTML node should be first sibling after canvas
if (shapes[i].node.parentNode == state.view.graph.container)
{
var canvas = state.view.canvas;
while (canvas != null && canvas.parentNode != state.view.graph.container)
{
canvas = canvas.parentNode;
}
if (canvas != null && canvas.nextSibling != null)
{
if (canvas.nextSibling != shapes[i].node)
{
shapes[i].node.parentNode.insertBefore(shapes[i].node, canvas.nextSibling);
}
}
else
{
shapes[i].node.parentNode.appendChild(shapes[i].node);
}
}
else if (shapes[i].node.parentNode.firstChild != null && shapes[i].node.parentNode.firstChild != shapes[i].node)
{
// Inserts the node as the first child of the parent to implement the order
shapes[i].node.parentNode.insertBefore(shapes[i].node, shapes[i].node.parentNode.firstChild);
}
}
if (html)
{
htmlNode = shapes[i].node;
}
else
{
node = shapes[i].node;
}
}
}
return [node, htmlNode];
};
/**
* Function: getShapesForState
*
* Returns the <mxShapes> for the given cell state in the order in which they should
* appear in the DOM.
*
* Parameters:
*
* state - <mxCellState> whose shapes should be returned.
*/
mxCellRenderer.prototype.getShapesForState = function(state)
{
return [state.shape, state.text, state.control];
};
/**
* Function: redraw
*
* Updates the bounds or points and scale of the shapes for the given cell
* state. This is called in mxGraphView.validatePoints as the last step of
* updating all cells.
*
* Parameters:
*
* state - <mxCellState> for which the shapes should be updated.
* force - Optional boolean that specifies if the cell should be reconfiured
* and redrawn without any additional checks.
* rendering - Optional boolean that specifies if the cell should actually
* be drawn into the DOM. If this is false then redraw and/or reconfigure
* will not be called on the shape.
*/
mxCellRenderer.prototype.redraw = function(state, force, rendering)
{
var shapeChanged = this.redrawShape(state, force, rendering);
if (state.shape != null && (rendering == null || rendering))
{
this.redrawLabel(state, shapeChanged);
this.redrawCellOverlays(state, shapeChanged);
this.redrawControl(state, shapeChanged);
}
};
/**
* Function: redrawShape
*
* Redraws the shape for the given cell state.
*
* Parameters:
*
* state - <mxCellState> whose label should be redrawn.
*/
mxCellRenderer.prototype.redrawShape = function(state, force, rendering)
{
var model = state.view.graph.model;
var shapeChanged = false;
// Forces creation of new shape if shape style has changed
if (state.shape != null && state.shape.style != null && state.style != null &&
state.shape.style[mxConstants.STYLE_SHAPE] != state.style[mxConstants.STYLE_SHAPE])
{
state.shape.destroy();
state.shape = null;
}
if (state.shape == null && state.view.graph.container != null &&
state.cell != state.view.currentRoot &&
(model.isVertex(state.cell) || model.isEdge(state.cell)))
{
state.shape = this.createShape(state);
if (state.shape != null)
{
state.shape.antiAlias = this.antiAlias;
this.createIndicatorShape(state);
this.initializeShape(state);
this.createCellOverlays(state);
this.installListeners(state);
// Forces a refresh of the handler if one exists
state.view.graph.selectionCellsHandler.updateHandler(state);
}
}
else if (!force && state.shape != null && (!mxUtils.equalEntries(state.shape.style,
state.style) || this.checkPlaceholderStyles(state)))
{
state.shape.resetStyles();
this.configureShape(state);
// LATER: Ignore update for realtime to fix reset of current gesture
state.view.graph.selectionCellsHandler.updateHandler(state);
force = true;
}
if (state.shape != null)
{
// Handles changes of the collapse icon
this.createControl(state);
// Redraws the cell if required, ignores changes to bounds if points are
// defined as the bounds are updated for the given points inside the shape
if (force || this.isShapeInvalid(state, state.shape))
{
if (state.absolutePoints != null)
{
state.shape.points = state.absolutePoints.slice();
state.shape.bounds = null;
}
else
{
state.shape.points = null;
state.shape.bounds = new mxRectangle(state.x, state.y, state.width, state.height);
}
state.shape.scale = state.view.scale;
if (rendering == null || rendering)
{
this.doRedrawShape(state);
}
else
{
state.shape.updateBoundingBox();
}
shapeChanged = true;
}
}
return shapeChanged;
};
/**
* Function: doRedrawShape
*
* Invokes redraw on the shape of the given state.
*/
mxCellRenderer.prototype.doRedrawShape = function(state)
{
state.shape.redraw();
};
/**
* Function: isShapeInvalid
*
* Returns true if the given shape must be repainted.
*/
mxCellRenderer.prototype.isShapeInvalid = function(state, shape)
{
return shape.bounds == null || shape.scale != state.view.scale ||
(state.absolutePoints == null && !shape.bounds.equals(state)) ||
(state.absolutePoints != null && !mxUtils.equalPoints(shape.points, state.absolutePoints))
};
/**
* Function: destroy
*
* Destroys the shapes associated with the given cell state.
*
* Parameters:
*
* state - <mxCellState> for which the shapes should be destroyed.
*/
mxCellRenderer.prototype.destroy = function(state)
{
if (state.shape != null)
{
if (state.text != null)
{
state.text.destroy();
state.text = null;
}
if (state.overlays != null)
{
state.overlays.visit(function(id, shape)
{
shape.destroy();
});
state.overlays = null;
}
if (state.control != null)
{
state.control.destroy();
state.control = null;
}
state.shape.destroy();
state.shape = null;
}
};
Mini Shell