a8b4753d1d
This ensures that the expected events are given even after the widget is recreated due to a change of some controls on its page (and not because it's recreated by one of the menu commands in the parent frame). We also don't need to connect to these events from WidgetsFrame any longer (and, in fact, doing it would be wrong as we'd connect twice), which simplifies its code.
156 lines
5.2 KiB
C++
156 lines
5.2 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Program: wxWidgets Widgets Sample
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// Name: activityindicator.cpp
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// Purpose: Part of the widgets sample showing wxActivityIndicator
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// Author: Vadim Zeitlin
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// Created: 2015-03-06
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// Copyright: (c) 2015 wxWindows team
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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// ============================================================================
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// declarations
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// ============================================================================
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// ----------------------------------------------------------------------------
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// headers
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// ----------------------------------------------------------------------------
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// for compilers that support precompilation, includes "wx/wx.h".
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#include "wx/wxprec.h"
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#if wxUSE_ACTIVITYINDICATOR
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// for all others, include the necessary headers
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#ifndef WX_PRECOMP
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#include "wx/button.h"
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#include "wx/sizer.h"
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#include "wx/statbox.h"
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#include "wx/stattext.h"
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#endif
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#include "wx/activityindicator.h"
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#include "widgets.h"
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#include "icons/activityindicator.xpm"
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// ----------------------------------------------------------------------------
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// constants
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// ----------------------------------------------------------------------------
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// Control IDs
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enum
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{
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ActivityIndicator_Start = wxID_HIGHEST,
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ActivityIndicator_Stop,
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ActivityIndicator_IsRunning
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};
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// ----------------------------------------------------------------------------
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// ActivityIndicatorWidgetsPage
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// ----------------------------------------------------------------------------
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class ActivityIndicatorWidgetsPage : public WidgetsPage
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{
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public:
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ActivityIndicatorWidgetsPage(WidgetsBookCtrl *book, wxImageList *imaglist)
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: WidgetsPage(book, imaglist, activityindicator_xpm)
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{
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m_indicator = nullptr;
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m_sizerIndicator = nullptr;
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}
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virtual wxWindow *GetWidget() const override { return m_indicator; }
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virtual void RecreateWidget() override;
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// lazy creation of the content
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virtual void CreateContent() override;
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protected:
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void OnButtonStart(wxCommandEvent&) { m_indicator->Start(); }
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void OnButtonStop(wxCommandEvent&) { m_indicator->Stop(); }
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void OnUpdateIsRunning(wxUpdateUIEvent& event)
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{
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event.SetText(m_indicator && m_indicator->IsRunning()
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? "Indicator is running"
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: "Indicator is stopped");
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}
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// the indicator itself and the sizer it is in
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wxActivityIndicator *m_indicator;
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wxStaticBoxSizer *m_sizerIndicator;
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private:
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wxDECLARE_EVENT_TABLE();
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DECLARE_WIDGETS_PAGE(ActivityIndicatorWidgetsPage)
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};
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// ----------------------------------------------------------------------------
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// event tables
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// ----------------------------------------------------------------------------
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wxBEGIN_EVENT_TABLE(ActivityIndicatorWidgetsPage, WidgetsPage)
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EVT_BUTTON(ActivityIndicator_Start,
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ActivityIndicatorWidgetsPage::OnButtonStart)
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EVT_BUTTON(ActivityIndicator_Stop,
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ActivityIndicatorWidgetsPage::OnButtonStop)
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EVT_UPDATE_UI(ActivityIndicator_IsRunning,
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ActivityIndicatorWidgetsPage::OnUpdateIsRunning)
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wxEND_EVENT_TABLE()
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// ============================================================================
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// implementation
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// ============================================================================
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IMPLEMENT_WIDGETS_PAGE(ActivityIndicatorWidgetsPage,
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"ActivityIndicator", NATIVE_CTRLS);
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void ActivityIndicatorWidgetsPage::CreateContent()
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{
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wxStaticBoxSizer* const sizerOper = new wxStaticBoxSizer(wxVERTICAL, this,
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"&Operations");
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wxStaticBox* const sizerOperBox = sizerOper->GetStaticBox();
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sizerOper->Add(new wxButton(sizerOperBox, ActivityIndicator_Start, "&Start"),
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wxSizerFlags().Expand().Border());
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sizerOper->Add(new wxButton(sizerOperBox, ActivityIndicator_Stop, "&Stop"),
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wxSizerFlags().Expand().Border());
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sizerOper->Add(new wxStaticText(sizerOperBox, ActivityIndicator_IsRunning,
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"Indicator is initializing..."),
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wxSizerFlags().Expand().Border());
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m_sizerIndicator = new wxStaticBoxSizer(wxHORIZONTAL, this,
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"Activity Indicator");
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RecreateWidget();
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wxSizer* const sizerTop = new wxBoxSizer(wxHORIZONTAL);
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sizerTop->Add(sizerOper, wxSizerFlags().Expand().DoubleBorder());
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sizerTop->Add(m_sizerIndicator, wxSizerFlags(1).Expand().DoubleBorder());
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SetSizer(sizerTop);
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}
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void ActivityIndicatorWidgetsPage::RecreateWidget()
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{
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m_sizerIndicator->Clear(true /* delete windows */);
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m_indicator = new wxActivityIndicator(m_sizerIndicator->GetStaticBox(), wxID_ANY,
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wxDefaultPosition, wxDefaultSize,
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GetAttrs().m_defaultFlags);
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NotifyWidgetRecreation(m_indicator);
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m_sizerIndicator->AddStretchSpacer();
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m_sizerIndicator->Add(m_indicator, wxSizerFlags().Centre());
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m_sizerIndicator->AddStretchSpacer();
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m_sizerIndicator->Layout();
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}
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#endif // wxUSE_ACTIVITYINDICATOR
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