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

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

#include <ChartsExample.h>

Inheritance diagram for PieExample:
Inheritance graph
[legend]

Public Member Functions

 PieExample (Wt::WContainerWidget *parent)
 Creates the pie chart 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 Pie chart.

Definition at line 59 of file ChartsExample.h.

Constructor & Destructor Documentation

◆ PieExample()

PieExample::PieExample ( Wt::WContainerWidget *  parent)

Creates the pie chart example.

Definition at line 338 of file ChartsExample.C.

338  :
339  WContainerWidget(parent)
340 {
341  new WText(WString::tr("pie chart"), this);
342 
343  WStandardItemModel *model = new WStandardItemModel(this);
344  model->setItemPrototype(new NumericItem());
345 
346  //headers
347  model->insertColumns(model->columnCount(), 2);
348  model->setHeaderData(0, WString("Item"));
349  model->setHeaderData(1, WString("Sales"));
350 
351  //data
352  model->insertRows(model->rowCount(), 6);
353  int row = 0;
354  model->setData(row, 0, WString("Blueberry"));
355  model->setData(row, 1, 120);
356  // model->setData(row, 1, WString("Blueberry"), ToolTipRole);
357  row++;
358  model->setData(row, 0, WString("Cherry"));
359  model->setData(row, 1, 30);
360  row++;
361  model->setData(row, 0, WString("Apple"));
362  model->setData(row, 1, 260);
363  row++;
364  model->setData(row, 0, WString("Boston Cream"));
365  model->setData(row, 1, 160);
366  row++;
367  model->setData(row, 0, WString("Other"));
368  model->setData(row, 1, 40);
369  row++;
370  model->setData(row, 0, WString("Vanilla Cream"));
371  model->setData(row, 1, 120);
372  row++;
373 
374  //set all items to be editable and selectable
375  for (int row = 0; row < model->rowCount(); ++row)
376  for (int col = 0; col < model->columnCount(); ++col)
377  model->item(row, col)->setFlags(ItemIsSelectable | ItemIsEditable);
378 
379  WContainerWidget *w = new WContainerWidget(this);
380  WTableView* table = new WTableView(w);
381 
382  table->setMargin(10, Top | Bottom);
383  table->setMargin(WLength::Auto, Left | Right);
384  table->setSortingEnabled(true);
385  table->setModel(model);
386  table->setColumnWidth(1, 100);
387  table->setRowHeight(22);
388 
389  if (WApplication::instance()->environment().ajax()) {
390  table->resize(150 + 100 + 14, 20 + 6 * 22);
391  table->setEditTriggers(WAbstractItemView::SingleClicked);
392  } else {
393  table->resize(150 + 100 + 14, WLength::Auto);
394  table->setEditTriggers(WAbstractItemView::NoEditTrigger);
395  }
396 
397  /*
398  * Create the pie chart.
399  */
400  WPieChart *chart = new WPieChart(this);
401  chart->setModel(model); // set the model
402  chart->setLabelsColumn(0); // set the column that holds the labels
403  chart->setDataColumn(1); // set the column that holds the data
404 
405  // configure location and type of labels
406  chart->setDisplayLabels(Outside | TextLabel | TextPercentage);
407 
408  // enable a 3D and shadow effect
409  chart->setPerspectiveEnabled(true, 0.2);
410  chart->setShadowEnabled(true);
411 
412  // explode the first item
413  chart->setExplode(0, 0.3);
414 
415  chart->resize(800, 300); // WPaintedWidget must be given an explicit size
416 
417  chart->setMargin(10, Top | Bottom); // add margin vertically
418  chart->setMargin(WLength::Auto, Left | Right); // center horizontally
419 }
Wt::Chart::WPieChart::setExplode
void setExplode(int modelRow, double factor)
Wt::WStandardItemModel::item
WStandardItem * item(int row, int column=0) const
Wt::WTableView::resize
virtual void resize(const WLength &width, const WLength &height) override
Wt::WAbstractItemModel::insertColumns
virtual bool insertColumns(int column, int count, const WModelIndex &parent=WModelIndex())
Wt::Chart::WPieChart::setLabelsColumn
void setLabelsColumn(int column)
Key::Left
Key::Right
Wt::WAbstractItemModel::insertRows
virtual bool insertRows(int row, int count, const WModelIndex &parent=WModelIndex())
Wt::Chart::WPieChart::setDisplayLabels
void setDisplayLabels(WFlags< LabelOption > options)
Wt::WTableView::setModel
virtual void setModel(const std::shared_ptr< WAbstractItemModel > &model) override
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::Chart::WPieChart::setPerspectiveEnabled
void setPerspectiveEnabled(bool enabled, double height=1.0)
Wt::WWebWidget::setMargin
virtual void setMargin(const WLength &margin, WFlags< Side > sides=AllSides) override
LabelOption::TextLabel
Wt::WPaintedWidget::resize
virtual void resize(const WLength &width, const WLength &height) override
Wt::Chart::WAbstractChart::setModel
void setModel(const std::shared_ptr< WAbstractItemModel > &model)
LegendLocation::Outside
Wt::WStandardItemModel::setItemPrototype
void setItemPrototype(std::unique_ptr< WStandardItem > item)
Wt::WAbstractItemModel::columnCount
virtual int columnCount(const WModelIndex &parent=WModelIndex()) const=0
Wt::WAbstractItemView::setEditTriggers
void setEditTriggers(WFlags< EditTrigger > editTriggers)
Wt::Chart::WPieChart::setShadowEnabled
void setShadowEnabled(bool enabled)
Wt::WTableView::setColumnWidth
virtual void setColumnWidth(int column, const WLength &width) override
LabelOption::TextPercentage
Wt::Chart::WPieChart::setDataColumn
void setDataColumn(int modelColumn)
Wt::WAbstractItemView::setSortingEnabled
void setSortingEnabled(bool enabled)
Wt::WAbstractItemModel::setHeaderData
virtual bool setHeaderData(int section, Orientation orientation, const cpp17::any &value, ItemDataRole role=ItemDataRole::Edit)
Wt::WCompositeWidget::setMargin
virtual void setMargin(const WLength &margin, WFlags< Side > sides=AllSides) override
Wt::WStandardItem::setFlags
void setFlags(WFlags< ItemFlag > flags)
Wt::WTableView::setRowHeight
virtual void setRowHeight(const WLength &rowHeight) override
The documentation for this class was generated from the following files:
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