Wt examples  3.3.0
Public Member Functions | List of all members
TimeSeriesExample Class Reference

A widget that demonstrates a times series chart. More...

#include <ChartsExample.h>

Inheritance diagram for TimeSeriesExample:
Inheritance graph
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Public Member Functions

 TimeSeriesExample (Wt::WContainerWidget *parent)
 Creates the time series scatter plot example. More...
 
- Public Member Functions inherited from Wt::WContainerWidget
 WContainerWidget (WContainerWidget *parent=0)
 
 ~WContainerWidget ()
 
void setLayout (WLayout *layout)
 
void setLayout (WLayout *layout, WFlags< AlignmentFlag > alignment)
 
WLayoutlayout ()
 
virtual void addWidget (WWidget *widget)
 
virtual void insertBefore (WWidget *widget, WWidget *before)
 
virtual void insertWidget (int index, WWidget *widget)
 
virtual void removeWidget (WWidget *widget)
 
virtual void clear ()
 
virtual int indexOf (WWidget *widget) const
 
virtual WWidgetwidget (int index) const
 
virtual int count () const
 
void setContentAlignment (WFlags< AlignmentFlag > contentAlignment)
 
void setPadding (const WLength &padding, WFlags< Side > sides=All)
 
WLength padding (Side side) const
 
WFlags< AlignmentFlagcontentAlignment () const
 
void setOverflow (Overflow overflow, WFlags< Orientation > orientation=(Horizontal|Vertical))
 
void setList (bool list, bool ordered=false)
 
bool isList () const
 
bool isUnorderedList () const
 
bool isOrderedList () const
 
EventSignal< WScrollEvent > & scrolled ()
 
- Public Member Functions inherited from Wt::WInteractWidget
 WInteractWidget (WContainerWidget *parent=0)
 
EventSignal< WKeyEvent > & keyWentDown ()
 
EventSignal< WKeyEvent > & keyPressed ()
 
EventSignal< WKeyEvent > & keyWentUp ()
 
EventSignalenterPressed ()
 
EventSignalescapePressed ()
 
EventSignal< WMouseEvent > & clicked ()
 
EventSignal< WMouseEvent > & doubleClicked ()
 
EventSignal< WMouseEvent > & mouseWentDown ()
 
EventSignal< WMouseEvent > & mouseWentUp ()
 
EventSignal< WMouseEvent > & mouseWentOut ()
 
EventSignal< WMouseEvent > & mouseWentOver ()
 
EventSignal< WMouseEvent > & mouseMoved ()
 
EventSignal< WMouseEvent > & mouseDragged ()
 
EventSignal< WMouseEvent > & mouseWheel ()
 
EventSignal< WTouchEvent > & touchStarted ()
 
EventSignal< WTouchEvent > & touchEnded ()
 
EventSignal< WTouchEvent > & touchMoved ()
 
EventSignal< WGestureEvent > & gestureStarted ()
 
EventSignal< WGestureEvent > & gestureChanged ()
 
EventSignal< WGestureEvent > & gestureEnded ()
 
void setDraggable (const std::string &mimeType, WWidget *dragWidget=0, bool isDragWidgetOnly=false, WObject *sourceWidget=0)
 
void setMouseOverDelay (int delay)
 
int mouseOverDelay () const
 
virtual void load ()
 
virtual bool isEnabled () const
 
- Public Member Functions inherited from Wt::WWebWidget
 WWebWidget (WContainerWidget *parent=0)
 
virtual void setPositionScheme (PositionScheme scheme)
 
virtual PositionScheme positionScheme () const
 
virtual void setOffsets (const WLength &offset, WFlags< Side > sides=All)
 
virtual WLength offset (Side s) const
 
virtual void resize (const WLength &width, const WLength &height)
 
virtual WLength width () const
 
virtual WLength height () const
 
virtual void setMinimumSize (const WLength &width, const WLength &height)
 
virtual WLength minimumWidth () const
 
virtual WLength minimumHeight () const
 
virtual void setMaximumSize (const WLength &width, const WLength &height)
 
virtual WLength maximumWidth () const
 
virtual WLength maximumHeight () const
 
virtual void setLineHeight (const WLength &height)
 
virtual WLength lineHeight () const
 
virtual void setFloatSide (Side s)
 
virtual Side floatSide () const
 
virtual void setClearSides (WFlags< Side > sides)
 
virtual WFlags< SideclearSides () const
 
virtual void setMargin (const WLength &margin, WFlags< Side > sides=All)
 
virtual WLength margin (Side side) const
 
virtual void setHiddenKeepsGeometry (bool enabled)
 
virtual bool hiddenKeepsGeometry () const
 
virtual void setHidden (bool hidden, const WAnimation &animation=WAnimation())
 
virtual bool isHidden () const
 
virtual bool isVisible () const
 
virtual void setDisabled (bool disabled)
 
virtual bool isDisabled () const
 
virtual void setPopup (bool popup)
 
virtual bool isPopup () const
 
virtual void setInline (bool isInline)
 
virtual bool isInline () const
 
virtual void setDecorationStyle (const WCssDecorationStyle &style)
 
virtual WCssDecorationStyledecorationStyle ()
 
virtual void setStyleClass (const WString &styleClass)
 
virtual WString styleClass () const
 
virtual void addStyleClass (const WString &styleClass, bool force=false)
 
virtual void removeStyleClass (const WString &styleClass, bool force=false)
 
virtual bool hasStyleClass (const WString &styleClass) const
 
virtual void setVerticalAlignment (AlignmentFlag alignment, const WLength &length=WLength())
 
virtual AlignmentFlag verticalAlignment () const
 
virtual WLength verticalAlignmentLength () const
 
virtual void setToolTip (const WString &text, TextFormat textFormat=PlainText)
 
virtual const WStringtoolTip () const
 
virtual void refresh ()
 
virtual void setAttributeValue (const std::string &name, const WString &value)
 
virtual WString attributeValue (const std::string &name) const
 
virtual void setJavaScriptMember (const std::string &name, const std::string &value)
 
virtual std::string javaScriptMember (const std::string &name) const
 
virtual void callJavaScriptMember (const std::string &name, const std::string &args)
 
virtual bool loaded () const
 
virtual void setTabIndex (int index)
 
virtual int tabIndex () const
 
virtual void setId (const std::string &id)
 
virtual WWidgetfind (const std::string &name)
 
virtual void setSelectable (bool selectable)
 
virtual void doJavaScript (const std::string &javascript)
 
virtual const std::string id () const
 
void setLoadLaterWhenInvisible (bool)
 
const std::vector< WWidget * > & children () const
 
SignalchildrenChanged ()
 
bool isRendered () const
 
- Public Member Functions inherited from Wt::WWidget
virtual ~WWidget ()
 
WWidgetparent () const
 
void setWidth (const WLength &width)
 
void setHeight (const WLength &height)
 
virtual void positionAt (const WWidget *widget, Orientation orientation=Vertical)
 
virtual void toggleStyleClass (const WString &styleClass, bool add, bool force=false)
 
std::string jsRef () const
 
virtual void acceptDrops (const std::string &mimeType, const WString &hoverStyleClass=WString())
 
virtual void stopAcceptDrops (const std::string &mimeType)
 
virtual void htmlText (std::ostream &out)
 
bool isRendered () const
 
void hide ()
 
void animateHide (const WAnimation &animation)
 
void show ()
 
void animateShow (const WAnimation &animation)
 
void enable ()
 
void disable ()
 
bool layoutSizeAware () const
 
- Public Member Functions inherited from Wt::WObject
 WObject (WObject *parent=0)
 
virtual ~WObject ()
 
void setObjectName (const std::string &name)
 
virtual std::string objectName () const
 
void resetLearnedSlots ()
 
void resetLearnedSlot (void(T::*method)())
 
WStatelessSlot * implementStateless (void(T::*method)())
 
WStatelessSlot * implementStateless (void(T::*method)(), void(T::*undoMethod)())
 
WStatelessSlot * implementJavaScript (void(T::*method)(), const std::string &jsCode)
 
void addChild (WObject *child)
 
const std::vector< WObject * > & children () const
 
WObjectparent () const
 

Additional Inherited Members

- Public Types inherited from Wt::WContainerWidget
enum  Overflow
 
- Static Public Member Functions inherited from Wt::WWebWidget
static WString escapeText (const WString &text, bool newlinesToo=false)
 
static std::string & escapeText (std::string &text, bool newlinestoo=false)
 
static bool removeScript (WString &text)
 
static std::string jsStringLiteral (const std::string &v, char delimiter= '\'')
 
- Public Attributes inherited from Wt::WContainerWidget
 OverflowVisible
 
 OverflowAuto
 
 OverflowHidden
 
 OverflowScroll
 
- Protected Member Functions inherited from Wt::WInteractWidget
virtual void propagateSetEnabled (bool enabled)
 
- Static Protected Member Functions inherited from Wt::WObject
static WObjectsender ()
 

Detailed Description

A widget that demonstrates a times series chart.

Definition at line 29 of file ChartsExample.h.

Constructor & Destructor Documentation

TimeSeriesExample::TimeSeriesExample ( Wt::WContainerWidget parent)

Creates the time series scatter plot example.

Definition at line 163 of file ChartsExample.C.

164  :
165  WContainerWidget(parent)
166 {
167  new WText(WString::tr("scatter plot"), this);
168 
169  WAbstractItemModel *model = readCsvFile(
170  WApplication::appRoot() + "timeseries.csv", this);
171 
172  if (!model)
173  return;
174 
175  /*
176  * Parses the first column as dates, to be able to use a date scale
177  */
178  for (int i = 0; i < model->rowCount(); ++i) {
179  WString s = asString(model->data(i, 0));
180  WDate d = WDate::fromString(s, "dd/MM/yy");
181  model->setData(i, 0, d);
182  }
183 
184  // Show a view that allows editing of the model.
185  WContainerWidget *w = new WContainerWidget(this);
186  WTableView *table = new WTableView(w);
187 
188  table->setMargin(10, Top | Bottom);
189  table->setMargin(WLength::Auto, Left | Right);
190 
191  table->setModel(model);
192  table->setSortingEnabled(false); // Does not make much sense for time series
193  table->setColumnResizeEnabled(true);
194  table->setSelectionMode(NoSelection);
195  table->setAlternatingRowColors(true);
196  table->setColumnAlignment(0, AlignCenter);
197  table->setHeaderAlignment(0, AlignCenter);
198  table->setRowHeight(22);
199 
200  // Editing does not really work without Ajax, it would require an
201  // additional button somewhere to confirm the edited value.
202  if (WApplication::instance()->environment().ajax()) {
203  table->resize(800, 20 + 5*22);
204  table->setEditTriggers(WAbstractItemView::SingleClicked);
205  } else {
206  table->resize(800, 20 + 5*22 + 25);
207  table->setEditTriggers(WAbstractItemView::NoEditTrigger);
208  }
209 
210  WItemDelegate *delegate = new WItemDelegate(this);
211  delegate->setTextFormat("%.1f");
212  table->setItemDelegate(delegate);
213  table->setItemDelegateForColumn(0, new WItemDelegate(this));
214 
215  table->setColumnWidth(0, 80);
216  for (int i = 1; i < model->columnCount(); ++i)
217  table->setColumnWidth(i, 90);
218 
219  /*
220  * Create the scatter plot.
221  */
222  WCartesianChart *chart = new WCartesianChart(this);
223  //chart->setPreferredMethod(WPaintedWidget::PngImage);
224  //chart->setBackground(gray);
225  chart->setModel(model); // set the model
226  chart->setXSeriesColumn(0); // set the column that holds the X data
227  chart->setLegendEnabled(true); // enable the legend
228 
229  chart->setType(ScatterPlot); // set type to ScatterPlot
230  chart->axis(XAxis).setScale(DateScale); // set scale of X axis to DateScale
231 
232  // Provide space for the X and Y axis and title.
233  chart->setPlotAreaPadding(80, Left);
234  chart->setPlotAreaPadding(40, Top | Bottom);
235 
236  /*
237  * Add first two columns as line series
238  */
239  for (int i = 1; i < 3; ++i) {
240  WDataSeries s(i, LineSeries);
241  s.setShadow(WShadow(3, 3, WColor(0, 0, 0, 127), 3));
242  chart->addSeries(s);
243  }
244 
245  chart->resize(800, 400); // WPaintedWidget must be given explicit size
246 
247  chart->setMargin(10, Top | Bottom); // add margin vertically
248  chart->setMargin(WLength::Auto, Left | Right); // center horizontally
249 
250  new ChartConfig(chart, this);
}

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