Wt examples  4.12.2
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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:
[legend]

Public Member Functions

 CategoryExample ()
 Creates the category chart example.
 
- 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
 
virtual std::unique_ptr< WWidget > removeWidget (WWidget *widget)
 
std::unique_ptr< Widget > removeWidget (Widget *widget)
 
- 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
 
void showToolTipOnHover (bool enable)
 
void showToolTip ()
 
void hideToolTip ()
 
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
 
void setFocus ()
 
virtual void setFocus (bool focus)=0
 
- 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, WFlags< Orientation > adjustOrientations=AllOrientations)
 
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
 
virtual void scheduleThemeStyleApply (std::shared_ptr< Wt::WTheme > theme, WWidget *child, int role)
 
virtual void applyThemeStyles ()
 
- 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)
 
- Static Public Attributes inherited from Wt::WInteractWidget
static const std::string noDefault
 
- Protected Member Functions inherited from Wt::WInteractWidget
void render (WFlags< RenderFlag > flags) override
 
virtual void propagateSetEnabled (bool enabled) override
 
- Protected Member Functions inherited from Wt::WWebWidget
virtual void enableAjax () override
 
virtual WStatelessSlot * getStateless (Method method) 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 :
115 WContainerWidget()
116{
117 this->addWidget(std::make_unique<WText>(WString::tr("category chart")));
118
119 std::shared_ptr<WAbstractItemModel> model
120 = readCsvFile(WApplication::appRoot() + "category.csv", this);
121
122 if (!model)
123 return;
124
125 // Show a view that allows editing of the model.
126 auto *w = this->addWidget(std::make_unique<WContainerWidget>());
127 auto *table = w->addWidget(std::make_unique<WTableView>());
128
129 table->setMargin(10, Side::Top | Side::Bottom);
130 table->setMargin(WLength::Auto, Side::Left | Side::Right);
131
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);
140
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 }
150
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);
157
158 table->setColumnWidth(0, 80);
159 for (int i = 1; i < model->columnCount(); ++i)
160 table->setColumnWidth(i, 120);
161
162 /*
163 * Create the category chart.
164 */
165 WCartesianChart *chart = this->addWidget(std::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);
171
172 // Automatically layout chart (space for axes, legend, ...)
173 chart->setAutoLayoutEnabled(true);
174
175 chart->setBackground(WColor(200,200,200));
176
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 = std::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 }
186
187 chart->resize(800, 400);
188
189 chart->setMargin(10, Side::Top | Side::Bottom);
190 chart->setMargin(WLength::Auto, Side::Left | Side::Right);
191
192 /*
193 * Provide a widget to manipulate chart properties
194 */
195 this->addWidget(std::make_unique<ChartConfig>(chart));
196}
Wt::Chart::WAbstractChart::setModel
void setModel(const std::shared_ptr< WAbstractItemModel > &model)
Wt::Chart::WAbstractChart::setBackground
void setBackground(const WBrush &background)
Wt::Chart::WAbstractChart::setAutoLayoutEnabled
void setAutoLayoutEnabled(bool enabled=true)
Wt::Chart::WCartesianChart::setLegendEnabled
void setLegendEnabled(bool enabled)
Wt::Chart::WCartesianChart::setPanEnabled
void setPanEnabled(bool pan=true)
Wt::Chart::WCartesianChart::setZoomEnabled
void setZoomEnabled(bool zoom=true)
Wt::Chart::WCartesianChart::setXSeriesColumn
void setXSeriesColumn(int modelColumn)
Wt::Chart::WCartesianChart::addSeries
void addSeries(std::unique_ptr< WDataSeries > series)
Wt::WContainerWidget::addWidget
virtual void addWidget(std::unique_ptr< WWidget > widget)
Wt::WLength::Auto
static WLength Auto
Wt::WPaintedWidget::resize
virtual void resize(const WLength &width, const WLength &height) override
Wt::WString::tr
static WString tr(const char *key)
Wt::WWebWidget::setMargin
virtual void setMargin(const WLength &margin, WFlags< Side > sides=AllSides) override
The documentation for this class was generated from the following files:
Generated on Tue Jan 27 2026 for the C++ Web Toolkit (Wt) by  doxygen 1.9.8