Wt examples  3.3.1
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
[legend]

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.

163  :
164  WContainerWidget(parent)
165 {
166  new WText(WString::tr("scatter plot"), this);
167 
168  WAbstractItemModel *model = readCsvFile(
169  WApplication::appRoot() + "timeseries.csv", this);
170 
171  if (!model)
172  return;
173 
174  /*
175  * Parses the first column as dates, to be able to use a date scale
176  */
177  for (int i = 0; i < model->rowCount(); ++i) {
178  WString s = asString(model->data(i, 0));
179  WDate d = WDate::fromString(s, "dd/MM/yy");
180  model->setData(i, 0, d);
181  }
182 
183  // Show a view that allows editing of the model.
184  WContainerWidget *w = new WContainerWidget(this);
185  WTableView *table = new WTableView(w);
186 
187  table->setMargin(10, Top | Bottom);
188  table->setMargin(WLength::Auto, Left | Right);
189 
190  table->setModel(model);
191  table->setSortingEnabled(false); // Does not make much sense for time series
192  table->setColumnResizeEnabled(true);
193  table->setSelectionMode(NoSelection);
194  table->setAlternatingRowColors(true);
195  table->setColumnAlignment(0, AlignCenter);
196  table->setHeaderAlignment(0, AlignCenter);
197  table->setRowHeight(22);
198 
199  // Editing does not really work without Ajax, it would require an
200  // additional button somewhere to confirm the edited value.
201  if (WApplication::instance()->environment().ajax()) {
202  table->resize(800, 20 + 5*22);
203  table->setEditTriggers(WAbstractItemView::SingleClicked);
204  } else {
205  table->resize(800, 20 + 5*22 + 25);
206  table->setEditTriggers(WAbstractItemView::NoEditTrigger);
207  }
208 
209  WItemDelegate *delegate = new WItemDelegate(this);
210  delegate->setTextFormat("%.1f");
211  table->setItemDelegate(delegate);
212  table->setItemDelegateForColumn(0, new WItemDelegate(this));
213 
214  table->setColumnWidth(0, 80);
215  for (int i = 1; i < model->columnCount(); ++i)
216  table->setColumnWidth(i, 90);
217 
218  /*
219  * Create the scatter plot.
220  */
221  WCartesianChart *chart = new WCartesianChart(this);
222  //chart->setPreferredMethod(WPaintedWidget::PngImage);
223  //chart->setBackground(gray);
224  chart->setModel(model); // set the model
225  chart->setXSeriesColumn(0); // set the column that holds the X data
226  chart->setLegendEnabled(true); // enable the legend
227 
228  chart->setType(ScatterPlot); // set type to ScatterPlot
229  chart->axis(XAxis).setScale(DateScale); // set scale of X axis to DateScale
230 
231  // Provide space for the X and Y axis and title.
232  chart->setPlotAreaPadding(80, Left);
233  chart->setPlotAreaPadding(40, Top | Bottom);
234 
235  /*
236  * Add first two columns as line series
237  */
238  for (int i = 1; i < 3; ++i) {
239  WDataSeries s(i, LineSeries);
240  s.setShadow(WShadow(3, 3, WColor(0, 0, 0, 127), 3));
241  chart->addSeries(s);
242  }
243 
244  chart->resize(800, 400); // WPaintedWidget must be given explicit size
245 
246  chart->setMargin(10, Top | Bottom); // add margin vertically
247  chart->setMargin(WLength::Auto, Left | Right); // center horizontally
248 
249  new ChartConfig(chart, this);
250 }

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

Generated on Tue Aug 20 2013 for the C++ Web Toolkit (Wt) by doxygen 1.8.4