Wt examples  4.0.5
Public Member Functions | List of all members
CategoryExample Class Reference

A Widget that demonstrates a category chart. More...

#include <ChartsExample.h>

Inheritance diagram for CategoryExample:
Inheritance graph

Public Member Functions

 CategoryExample ()
 Creates the category chart example. More...
- Public Member Functions inherited from Wt::WContainerWidget
 WContainerWidget ()
 ~WContainerWidget ()
void setLayout (std::unique_ptr< WLayout > layout)
WLayoutlayout () 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< WWidgetremoveWidget (WWidget *widget) override
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=AllSides)
WLength padding (Side side) const
WFlags< AlignmentFlagcontentAlignment () 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 ()
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=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
SignalchildrenChanged ()
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< SideclearSides () 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 WCssDecorationStyledecorationStyle () 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 WWidgetfind (const std::string &name) override
virtual WWidgetfindById (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
EventSignalblurred ()
EventSignalfocussed ()
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 ()
WWidgetparent () const
std::unique_ptr< WWidgetremoveFromParent ()
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< WObjectremoveChild (WObject *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 category chart.

Definition at line 39 of file ChartsExample.h.

Constructor & Destructor Documentation

◆ CategoryExample()

CategoryExample::CategoryExample ( )

Creates the category chart example.

Definition at line 114 of file ChartsExample.C.

114  :
116 {
117  this->addWidget(cpp14::make_unique<WText>(WString::tr("category chart")));
119  std::shared_ptr<WAbstractItemModel> model
120  = readCsvFile(WApplication::appRoot() + "category.csv", this);
122  if (!model)
123  return;
125  // Show a view that allows editing of the model.
126  auto *w = this->addWidget(cpp14::make_unique<WContainerWidget>());
127  auto *table = w->addWidget(cpp14::make_unique<WTableView>());
129  table->setMargin(10, Side::Top | Side::Bottom);
130  table->setMargin(WLength::Auto, Side::Left | Side::Right);
132  table->setModel(model);
133  table->setSortingEnabled(true);
134  table->setColumnResizeEnabled(true);
135  // table->setSelectionMode(SelectionMode::Extended);
136  table->setAlternatingRowColors(true);
137  table->setColumnAlignment(0, AlignmentFlag::Center);
138  table->setHeaderAlignment(0, AlignmentFlag::Center);
139  table->setRowHeight(22);
141  // Editing does not really work without Ajax, it would require an
142  // additional button somewhere to confirm the edited value.
143  if (WApplication::instance()->environment().ajax()) {
144  table->resize(600, 20 + 5*22);
145  table->setEditTriggers(EditTrigger::SingleClicked);
146  } else {
147  table->resize(600, WLength::Auto);
148  table->setEditTriggers(EditTrigger::None);
149  }
151  // We use a single delegate for all items which rounds values to
152  // the closest integer value.
153  std::shared_ptr<WItemDelegate> delegate
154  = std::make_shared<WItemDelegate>();
155  delegate->setTextFormat("%.f");
156  table->setItemDelegate(delegate);
158  table->setColumnWidth(0, 80);
159  for (int i = 1; i < model->columnCount(); ++i)
160  table->setColumnWidth(i, 120);
162  /*
163  * Create the category chart.
164  */
165  WCartesianChart *chart = this->addWidget(cpp14::make_unique<WCartesianChart>());
166  chart->setModel(model); // set the model
167  chart->setXSeriesColumn(0); // set the column that holds the categories
168  chart->setLegendEnabled(true); // enable the legend
169  chart->setZoomEnabled(true);
170  chart->setPanEnabled(true);
172  // Automatically layout chart (space for axes, legend, ...)
173  chart->setAutoLayoutEnabled(true);
175  chart->setBackground(WColor(200,200,200));
177  /*
178  * Add all (but first) column as bar series
179  */
180  for (int i = 1; i < model->columnCount(); ++i) {
181  std::unique_ptr<WDataSeries> s
182  = cpp14::make_unique<WDataSeries>(i, SeriesType::Bar);
183  s->setShadow(WShadow(3, 3, WColor(0, 0, 0, 127), 3));
184  chart->addSeries(std::move(s));
185  }
187  chart->resize(800, 400);
189  chart->setMargin(10, Side::Top | Side::Bottom);
190  chart->setMargin(WLength::Auto, Side::Left | Side::Right);
192  /*
193  * Provide a widget to manipulate chart properties
194  */
195  this->addWidget(cpp14::make_unique<ChartConfig>(chart));
196 }
void setPanEnabled(bool pan=true)
void addSeries(std::unique_ptr< WDataSeries > series)
virtual void setMargin(const WLength &margin, WFlags< Side > sides=AllSides) override
void setZoomEnabled(bool zoom=true)
void setBackground(const WBrush &background)
virtual void resize(const WLength &width, const WLength &height) override
void setXSeriesColumn(int modelColumn)
void setModel(const std::shared_ptr< WAbstractItemModel > &model)
void setAutoLayoutEnabled(bool enabled=true)
void setLegendEnabled(bool enabled)
virtual void addWidget(std::unique_ptr< WWidget > widget)

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

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