AuroraMiddleware/wxWidgets
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Merge branch 'preferences-sample'

Browse Source 
Try to improve the sample and make it more realistic/representative of
the real world applications.
This commit is contained in:
Vadim Zeitlin 2017-07-11 23:38:37 +02:00
commit a0f9ab3e6d
1 changed files with 103 additions and 36 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

139
samples/preferences/preferences.cpp
View File

@ -28,6 +28,25 @@
#include "wx/artprov.h"
#include "wx/frame.h"
// This struct combines the settings edited in the preferences dialog.
struct MySettings
{
MySettings()
{
// Normally we would initialize values by loading them from some
// persistent storage, e.g. using wxConfig.
// For demonstration purposes, we just set hardcoded values here.
m_useMarkdown = true;
m_spellcheck = false;
}
bool m_useMarkdown;
bool m_spellcheck;
// We don't do the same thing for the second preferences page fields, but
// we would have included them in a real application.
};
class MyApp : public wxApp
{
public:
@ -36,8 +55,13 @@ public:
void ShowPreferencesEditor(wxWindow* parent);
void DismissPreferencesEditor();
const MySettings& GetSettings() const { return m_settings; }
void UpdateSettings(const MySettings& settings);
private:
class MyFrame* m_frame;
wxScopedPtr<wxPreferencesEditor> m_prefEditor;
MySettings m_settings;
};
wxIMPLEMENT_APP(MyApp);
@ -56,14 +80,36 @@ public:
menuBar->Append(fileMenu, "&File");
SetMenuBar(menuBar);
Connect(wxID_PREFERENCES,
wxEVT_MENU,
wxCommandEventHandler(MyFrame::OnPref), NULL, this);
Connect(wxID_EXIT,
wxEVT_MENU,
wxCommandEventHandler(MyFrame::OnExit), NULL, this);
Connect(wxEVT_CLOSE_WINDOW,
wxCloseEventHandler(MyFrame::OnClose), NULL, this);
Bind(wxEVT_MENU, &MyFrame::OnPref, this, wxID_PREFERENCES);
Bind(wxEVT_MENU, &MyFrame::OnExit, this, wxID_EXIT);
Bind(wxEVT_CLOSE_WINDOW, &MyFrame::OnClose, this);
wxPanel* const panel = new wxPanel(this);
m_textMarkdownSyntax = new wxStaticText(panel, wxID_ANY, "");
m_textSpellcheck = new wxStaticText(panel, wxID_ANY, "");
wxSizer* const sizer = new wxFlexGridSizer(2, wxSize(5, 5));
sizer->Add(new wxStaticText(panel, wxID_ANY, "Markdown syntax:"),
wxSizerFlags().Center().Right());
sizer->Add(m_textMarkdownSyntax,
wxSizerFlags().Center());
sizer->Add(new wxStaticText(panel, wxID_ANY, "Spell checking:"),
wxSizerFlags().Center().Right());
sizer->Add(m_textSpellcheck,
wxSizerFlags().Center());
panel->SetSizer(sizer);
// Show the initial values.
UpdateSettings();
}
void UpdateSettings()
{
// Here we should update the settings we use. As we don't actually do
// anything in this sample, just update their values shown on screen.
const MySettings& settings = wxGetApp().GetSettings();
m_textMarkdownSyntax->SetLabel(settings.m_useMarkdown ? "yes" : "no");
m_textSpellcheck->SetLabel(settings.m_spellcheck ? "on" : "off");
}
private:
@ -82,6 +128,9 @@ private:
wxGetApp().DismissPreferencesEditor();
e.Skip();
}
wxStaticText* m_textMarkdownSyntax;
wxStaticText* m_textSpellcheck;
};
@ -90,7 +139,7 @@ class PrefsPageGeneralPanel : public wxPanel
public:
PrefsPageGeneralPanel(wxWindow *parent) : wxPanel(parent)
{
m_useMarkdown = new wxCheckBox(this, wxID_ANY, "User Markdown syntax");
m_useMarkdown = new wxCheckBox(this, wxID_ANY, "Use Markdown syntax");
m_spellcheck = new wxCheckBox(this, wxID_ANY, "Check spelling");
wxSizer *sizer = new wxBoxSizer(wxVERTICAL);
@ -99,25 +148,19 @@ public:
SetSizerAndFit(sizer);
// On some platforms (OS X, GNOME), changes to preferences are applied
// immediately rather than after the OK or Apply button is pressed.
if ( wxPreferencesEditor::ShouldApplyChangesImmediately() )
{
m_useMarkdown->Connect(wxEVT_CHECKBOX,
wxCommandEventHandler(PrefsPageGeneralPanel::ChangedUseMarkdown),
NULL, this);
m_spellcheck->Connect(wxEVT_CHECKBOX,
wxCommandEventHandler(PrefsPageGeneralPanel::ChangedSpellcheck),
NULL, this);
}
m_useMarkdown->Bind(wxEVT_CHECKBOX,
&PrefsPageGeneralPanel::ChangedUseMarkdown,
this);
m_spellcheck->Bind(wxEVT_CHECKBOX,
&PrefsPageGeneralPanel::ChangedSpellcheck,
this);
}
virtual bool TransferDataToWindow()
{
// This is the place where you can initialize values, e.g. from wxConfig.
// For demonstration purposes, we just set hardcoded values.
m_useMarkdown->SetValue(true);
m_spellcheck->SetValue(false);
m_settingsCurrent = wxGetApp().GetSettings();
m_useMarkdown->SetValue(m_settingsCurrent.m_useMarkdown);
m_spellcheck->SetValue(m_settingsCurrent.m_spellcheck);
return true;
}
@ -125,25 +168,43 @@ public:
{
// Called on platforms with modal preferences dialog to save and apply
// the changes.
wxCommandEvent dummy;
ChangedUseMarkdown(dummy);
ChangedSpellcheck(dummy);
wxGetApp().UpdateSettings(m_settingsCurrent);
return true;
}
private:
void ChangedUseMarkdown(wxCommandEvent& WXUNUSED(e))
void UpdateSettingsIfNecessary()
{
// save new m_useMarkdown value and apply the change to the app
// On some platforms (OS X, GNOME), changes to preferences are applied
// immediately rather than after the OK or Apply button is pressed, so
// we need to take them into account as soon as they happen. On others
// (MSW), we need to wait until the changes are accepted by the user by
// pressing the "OK" button. To reuse the same code for both cases, we
// always update m_settingsCurrent object under all platforms, but only
// update the real application settings if necessary here.
if ( wxPreferencesEditor::ShouldApplyChangesImmediately() )
{
wxGetApp().UpdateSettings(m_settingsCurrent);
}
}
void ChangedSpellcheck(wxCommandEvent& WXUNUSED(e))
void ChangedUseMarkdown(wxCommandEvent& e)
{
// save new m_spellcheck value and apply the change to the app
m_settingsCurrent.m_useMarkdown = e.IsChecked();
UpdateSettingsIfNecessary();
}
void ChangedSpellcheck(wxCommandEvent& e)
{
m_settingsCurrent.m_spellcheck = e.IsChecked();
UpdateSettingsIfNecessary();
}
wxCheckBox *m_useMarkdown;
wxCheckBox *m_spellcheck;
// Settings corresponding to the current values in this dialog.
MySettings m_settingsCurrent;
};
class PrefsPageGeneral : public wxStockPreferencesPage
@ -172,9 +233,9 @@ public:
if ( wxPreferencesEditor::ShouldApplyChangesImmediately() )
{
m_fulltext->Connect(wxEVT_CHECKBOX,
wxCommandEventHandler(PrefsPageTopicsPanel::ChangedFulltext),
NULL, this);
m_fulltext->Bind(wxEVT_CHECKBOX,
&PrefsPageTopicsPanel::ChangedFulltext,
this);
}
}
@ -228,8 +289,8 @@ bool MyApp::OnInit()
// result in rather strange "Preferences Preferences" title.
SetAppDisplayName("wxWidgets Sample");
MyFrame *frame = new MyFrame();
frame->Show(true);
m_frame = new MyFrame();
m_frame->Show(true);
return true;
}
@ -251,3 +312,9 @@ void MyApp::DismissPreferencesEditor()
if ( m_prefEditor )
m_prefEditor->Dismiss();
}
void MyApp::UpdateSettings(const MySettings& settings)
{
m_settings = settings;
m_frame->UpdateSettings();
}