Wt examples  3.7.1
Public Member Functions | List of all members
TimeSeriesExample Class Reference
Charts example

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 ()
 
void setLayout (std::unique_ptr< WLayout > layout)
 
Layout * setLayout (std::unique_ptr< Layout > layout)
 
WLayout * layout () const
 
virtual void addWidget (std::unique_ptr< WWidget > widget)
 
Widget * addWidget (std::unique_ptr< Widget > widget)
 
Widget * addNew (Args &&...args)
 
virtual void insertBefore (std::unique_ptr< WWidget > widget, WWidget *before)
 
Widget * insertBefore (std::unique_ptr< Widget > widget, WWidget *before)
 
virtual void insertWidget (int index, std::unique_ptr< WWidget > widget)
 
Widget * insertWidget (int index, std::unique_ptr< Widget > widget)
 
Widget * insertNew (int index, Args &&...args)
 
virtual std::unique_ptr< WWidget > removeWidget (WWidget *widget) override
 
virtual void clear ()
 
virtual int indexOf (WWidget *widget) const
 
virtual WWidget * widget (int index) const
 
virtual int count () const
 
void setContentAlignment (WFlags< AlignmentFlag > contentAlignment)
 
void setPadding (const WLength &padding, WFlags< Side > sides=AllSides)
 
WLength padding (Side side) const
 
WFlags< AlignmentFlag > contentAlignment () const
 
void setOverflow (Overflow overflow, WFlags< Orientation > orientation=(Orientation::Horizontal|Orientation::Vertical))
 
void setList (bool list, bool ordered=false)
 
bool isList () const
 
bool isUnorderedList () const
 
bool isOrderedList () const
 
EventSignal< WScrollEvent > & scrolled ()
 
int scrollTop () const
 
int scrollLeft () const
 
- Public Member Functions inherited from Wt::WInteractWidget
 WInteractWidget ()
 
EventSignal< WKeyEvent > & keyWentDown ()
 
EventSignal< WKeyEvent > & keyPressed ()
 
EventSignal< WKeyEvent > & keyWentUp ()
 
EventSignal & enterPressed ()
 
EventSignal & escapePressed ()
 
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=nullptr, bool isDragWidgetOnly=false, WObject *sourceWidget=nullptr)
 
void unsetDraggable ()
 
void setMouseOverDelay (int delay)
 
int mouseOverDelay () const
 
virtual void setPopup (bool popup) override
 
virtual void load () override
 
virtual bool isEnabled () const override
 
- Public Member Functions inherited from Wt::WWebWidget
 WWebWidget ()
 
virtual std::vector< WWidget *> children () const override
 
Signal & childrenChanged ()
 
virtual void setPositionScheme (PositionScheme scheme) override
 
virtual PositionScheme positionScheme () const override
 
virtual void setOffsets (const WLength &offset, WFlags< Side > sides=AllSides) override
 
virtual WLength offset (Side s) const override
 
virtual void resize (const WLength &width, const WLength &height) override
 
virtual WLength width () const override
 
virtual WLength height () const override
 
virtual void setMinimumSize (const WLength &width, const WLength &height) override
 
virtual WLength minimumWidth () const override
 
virtual WLength minimumHeight () const override
 
virtual void setMaximumSize (const WLength &width, const WLength &height) override
 
virtual WLength maximumWidth () const override
 
virtual WLength maximumHeight () const override
 
virtual void setLineHeight (const WLength &height) override
 
virtual WLength lineHeight () const override
 
virtual void setFloatSide (Side s) override
 
virtual Side floatSide () const override
 
virtual void setClearSides (WFlags< Side > sides) override
 
virtual WFlags< Side > clearSides () const override
 
virtual void setMargin (const WLength &margin, WFlags< Side > sides=AllSides) override
 
virtual WLength margin (Side side) const override
 
virtual void setHiddenKeepsGeometry (bool enabled) override
 
virtual bool hiddenKeepsGeometry () const override
 
virtual void setHidden (bool hidden, const WAnimation &animation=WAnimation()) override
 
virtual bool isHidden () const override
 
virtual bool isVisible () const override
 
virtual void setDisabled (bool disabled) override
 
virtual bool isDisabled () const override
 
virtual bool isPopup () const override
 
virtual void setInline (bool isInline) override
 
virtual bool isInline () const override
 
virtual void setDecorationStyle (const WCssDecorationStyle &style) override
 
virtual WCssDecorationStyle & decorationStyle () override
 
virtual void setStyleClass (const WString &styleClass) override
 
virtual WString styleClass () const override
 
virtual void addStyleClass (const WString &styleClass, bool force=false) override
 
virtual void removeStyleClass (const WString &styleClass, bool force=false) override
 
virtual bool hasStyleClass (const WString &styleClass) const override
 
virtual void setVerticalAlignment (AlignmentFlag alignment, const WLength &length=WLength()) override
 
virtual AlignmentFlag verticalAlignment () const override
 
virtual WLength verticalAlignmentLength () const override
 
virtual void setToolTip (const WString &text, TextFormat textFormat=TextFormat::Plain) override
 
virtual void setDeferredToolTip (bool enable, TextFormat textFormat=TextFormat::Plain) override
 
virtual WString toolTip () const override
 
virtual void refresh () override
 
virtual void setAttributeValue (const std::string &name, const WString &value) override
 
virtual WString attributeValue (const std::string &name) const override
 
virtual void setJavaScriptMember (const std::string &name, const std::string &value) override
 
virtual std::string javaScriptMember (const std::string &name) const override
 
virtual void callJavaScriptMember (const std::string &name, const std::string &args) override
 
virtual bool loaded () const override
 
virtual void setId (const std::string &id) override
 
virtual WWidget * find (const std::string &name) override
 
virtual WWidget * findById (const std::string &id) override
 
virtual void setSelectable (bool selectable) override
 
virtual void doJavaScript (const std::string &javascript) override
 
virtual const std::string id () const override
 
void setLoadLaterWhenInvisible (bool)
 
std::string htmlTagName () const
 
void setHtmlTagName (const std::string &tag)
 
virtual void setCanReceiveFocus (bool enabled) override
 
virtual bool canReceiveFocus () const override
 
virtual bool setFirstFocus () override
 
virtual void setFocus (bool focus) override
 
virtual bool hasFocus () const override
 
virtual void setTabIndex (int index) override
 
virtual int tabIndex () const override
 
EventSignal & blurred ()
 
EventSignal & focussed ()
 
virtual bool scrollVisibilityEnabled () const final override
 
virtual void setScrollVisibilityEnabled (bool enabled) final override
 
virtual int scrollVisibilityMargin () const final override
 
virtual void setScrollVisibilityMargin (int margin) final override
 
virtual Signal< bool > & scrollVisibilityChanged () final override
 
virtual bool isScrollVisible () const final override
 
virtual void setThemeStyleEnabled (bool enabled) final override
 
virtual bool isThemeStyleEnabled () const final override
 
virtual void setObjectName (const std::string &name) override
 
- Public Member Functions inherited from Wt::WWidget
virtual ~WWidget ()
 
WWidget * parent () const
 
std::unique_ptr< Widget > removeWidget (Widget *widget)
 
std::unique_ptr< WWidget > removeFromParent ()
 
void setWidth (const WLength &width)
 
void setHeight (const WLength &height)
 
virtual void positionAt (const WWidget *widget, Orientation orientation=Orientation::Vertical)
 
virtual void toggleStyleClass (const WString &styleClass, bool add, bool force=false)
 
std::string jsRef () const
 
void setFocus ()
 
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
void addChild (std::unique_ptr< WObject > child)
 
Child * addChild (std::unique_ptr< Child > child)
 
std::unique_ptr< WObject > removeChild (WObject *child)
 
std::unique_ptr< Child > removeChild (Child *child)
 
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)())
 
void isNotStateless ()
 
WStatelessSlot * implementJavaScript (void(T::*method)(), const std::string &jsCode)
 
- Public Member Functions inherited from Wt::Core::observable
 observable () noexcept
 
virtual ~observable ()
 
auto bindSafe (void(C::*method)(Args...)) noexcept
 
auto bindSafe (void(C::*method)(Args...) const) const noexcept
 
auto bindSafe (const Function &function) noexcept
 

Additional Inherited Members

- Public Types inherited from Wt::WObject
typedef void(WObject::* Method) ()
 
- Static Public Member Functions inherited from Wt::WWebWidget
static std::string jsStringLiteral (const std::string &v, char delimiter='\'')
 
- Static Public Member Functions inherited from Wt::WWidget
static WString tr (const char *key)
 
- Protected Member Functions inherited from Wt::WInteractWidget
virtual void propagateSetEnabled (bool enabled) override
 
- Protected Member Functions inherited from Wt::WWebWidget
virtual void enableAjax () override
 
virtual WStatelessSlot * getStateless (Method method) override
 
virtual void render (WFlags< RenderFlag > flags) override
 
- Protected Member Functions inherited from Wt::WWidget
void setLayoutSizeAware (bool sizeAware)
 
virtual void layoutSizeChanged (int width, int height)
 
 WWidget ()
 
virtual void dropEvent (WDropEvent dropEvent)
 
virtual int boxPadding (Orientation orientation) const
 
virtual int boxBorder (Orientation orientation) const
 
void scheduleRender (WFlags< RepaintFlag > flags=None)
 

Detailed Description

A widget that demonstrates a times series chart.

Definition at line 29 of file ChartsExample.h.

Constructor & Destructor Documentation

◆ TimeSeriesExample()

TimeSeriesExample::TimeSeriesExample ( Wt::WContainerWidget *  parent)

Creates the time series scatter plot example.

Definition at line 193 of file ChartsExample.C.

193  :
194  WContainerWidget(parent)
195 {
196  new WText(WString::tr("scatter plot"), this);
197 
198  WAbstractItemModel *model = readCsvFile(
199  WApplication::appRoot() + "timeseries.csv", this);
200 
201  if (!model)
202  return;
203 
204  /*
205  * Parses the first column as dates, to be able to use a date scale
206  */
207  for (int i = 0; i < model->rowCount(); ++i) {
208  WString s = asString(model->data(i, 0));
209  WDate d = WDate::fromString(s, "dd/MM/yy");
210  model->setData(i, 0, d);
211  }
212 
213  // Show a view that allows editing of the model.
214  WContainerWidget *w = new WContainerWidget(this);
215  WTableView *table = new WTableView(w);
216 
217  table->setMargin(10, Top | Bottom);
218  table->setMargin(WLength::Auto, Left | Right);
219 
220  table->setModel(model);
221  table->setSortingEnabled(false); // Does not make much sense for time series
222  table->setColumnResizeEnabled(true);
223  table->setSelectionMode(NoSelection);
224  table->setAlternatingRowColors(true);
225  table->setColumnAlignment(0, AlignCenter);
226  table->setHeaderAlignment(0, AlignCenter);
227  table->setRowHeight(22);
228 
229  // Editing does not really work without Ajax, it would require an
230  // additional button somewhere to confirm the edited value.
231  if (WApplication::instance()->environment().ajax()) {
232  table->resize(800, 20 + 5*22);
233  table->setEditTriggers(WAbstractItemView::SingleClicked);
234  } else {
235  table->resize(800, 20 + 5*22 + 25);
236  table->setEditTriggers(WAbstractItemView::NoEditTrigger);
237  }
238 
239  WItemDelegate *delegate = new WItemDelegate(this);
240  delegate->setTextFormat("%.1f");
241  table->setItemDelegate(delegate);
242  table->setItemDelegateForColumn(0, new WItemDelegate(this));
243 
244  table->setColumnWidth(0, 80);
245  for (int i = 1; i < model->columnCount(); ++i)
246  table->setColumnWidth(i, 90);
247 
248  /*
249  * Create the scatter plot.
250  */
251  WCartesianChart *chart = new WCartesianChart(this);
252  //chart->setPreferredMethod(WPaintedWidget::PngImage);
253  //chart->setBackground(gray);
254  chart->setModel(model); // set the model
255  chart->setXSeriesColumn(0); // set the column that holds the X data
256  chart->setLegendEnabled(true); // enable the legend
257  chart->setZoomEnabled(true);
258  chart->setPanEnabled(true);
259 
260  chart->setType(ScatterPlot); // set type to ScatterPlot
261  chart->axis(XAxis).setScale(DateScale); // set scale of X axis to DateScale
262 
263  // Automatically layout chart (space for axes, legend, ...)
264  chart->setAutoLayoutEnabled();
265 
266  chart->setBackground(WColor(200,200,200));
267  /*
268  * Add first two columns as line series
269  */
270  for (int i = 1; i < 3; ++i) {
271  WDataSeries *s = new WDataSeries(i, LineSeries);
272  s->setShadow(WShadow(3, 3, WColor(0, 0, 0, 127), 3));
273  chart->addSeries(s);
274  }
275 
276  chart->resize(800, 400); // WPaintedWidget must be given explicit size
277 
278  chart->setMargin(10, Top | Bottom); // add margin vertically
279  chart->setMargin(WLength::Auto, Left | Right); // center horizontally
280 
281  new ChartConfig(chart, this);
282 }
Wt::WItemDelegate::setTextFormat
void setTextFormat(const WString &format)
Wt::WTableView::resize
virtual void resize(const WLength &width, const WLength &height) override
Wt::Chart::WCartesianChart::setPanEnabled
void setPanEnabled(bool pan=true)
Key::Left
Wt::Chart::WCartesianChart::addSeries
void addSeries(std::unique_ptr< WDataSeries > series)
Key::Right
Wt::WAbstractItemView::setItemDelegateForColumn
void setItemDelegateForColumn(int column, const std::shared_ptr< WAbstractItemDelegate > &delegate)
Wt::Chart::WCartesianChart::axis
WAxis & axis(Axis axis)
Wt::Chart::WDataSeries::setShadow
void setShadow(const WShadow &shadow)
Wt::WAbstractItemView::setItemDelegate
void setItemDelegate(const std::shared_ptr< WAbstractItemDelegate > &delegate)
Wt::WTableView::setModel
virtual void setModel(const std::shared_ptr< WAbstractItemModel > &model) override
Wt::Chart::WCartesianChart::setType
void setType(ChartType type)
Wt::WAbstractItemView::setSelectionMode
void setSelectionMode(SelectionMode mode)
Wt::WAbstractItemModel::setData
virtual bool setData(const WModelIndex &index, const cpp17::any &value, ItemDataRole role=ItemDataRole::Edit)
Wt::WAbstractItemModel::rowCount
virtual int rowCount(const WModelIndex &parent=WModelIndex()) const=0
Wt::WWebWidget::setMargin
virtual void setMargin(const WLength &margin, WFlags< Side > sides=AllSides) override
Wt::Chart::WCartesianChart::setZoomEnabled
void setZoomEnabled(bool zoom=true)
Wt::Chart::WAbstractChart::setBackground
void setBackground(const WBrush &background)
Wt::WPaintedWidget::resize
virtual void resize(const WLength &width, const WLength &height) override
Wt::Chart::WAxis::setScale
void setScale(AxisScale scale)
Wt::Chart::WCartesianChart::setXSeriesColumn
void setXSeriesColumn(int modelColumn)
asString
WString asString(const cpp17::any &v, const WString &formatString=WString())
Wt::Chart::WAbstractChart::setModel
void setModel(const std::shared_ptr< WAbstractItemModel > &model)
Wt::WAbstractItemModel::data
virtual cpp17::any data(const WModelIndex &index, ItemDataRole role=ItemDataRole::Display) const=0
Wt::WAbstractItemModel::columnCount
virtual int columnCount(const WModelIndex &parent=WModelIndex()) const=0
Wt::WTableView::setAlternatingRowColors
virtual void setAlternatingRowColors(bool enable) override
Wt::WAbstractItemView::setEditTriggers
void setEditTriggers(WFlags< EditTrigger > editTriggers)
Wt::WAbstractItemView::setColumnResizeEnabled
void setColumnResizeEnabled(bool enabled)
Wt::WTableView::setColumnWidth
virtual void setColumnWidth(int column, const WLength &width) override
Wt::Chart::WAbstractChart::setAutoLayoutEnabled
void setAutoLayoutEnabled(bool enabled=true)
Wt::WAbstractItemView::setHeaderAlignment
virtual void setHeaderAlignment(int column, WFlags< AlignmentFlag > alignment)
Wt::Chart::WCartesianChart::setLegendEnabled
void setLegendEnabled(bool enabled)
Wt::WAbstractItemView::setSortingEnabled
void setSortingEnabled(bool enabled)
Wt::WCompositeWidget::setMargin
virtual void setMargin(const WLength &margin, WFlags< Side > sides=AllSides) override
ChartConfig
A class that allows configuration of a cartesian chart.
Definition: ChartConfig.h:40
Wt::WTableView::setRowHeight
virtual void setRowHeight(const WLength &rowHeight) override
Wt::WAbstractItemView::setColumnAlignment
virtual void setColumnAlignment(int column, AlignmentFlag alignment)
The documentation for this class was generated from the following files:
Generated on Tue Dec 15 2020 for the C++ Web Toolkit (Wt) by doxygen 1.8.13