wxwidgets/samples/widgets/fontpicker.cpp
Vadim Zeitlin 4f4c5fcfdf Use nullptr instead of NULL in the code and documentation
This is a combination of running clang-tidy with modernize-use-nullptr
check for some ports (GTK, X11, OSX) and manual changes to the ports for
which it couldn't be used easily (MSW, DFB) and also manually updating
the docs.

Also replace NULL with null or nullptr in the comments as this is more
consistent with the use of nullptr in the code and makes it simpler to
grep for the remaining occurrences of NULL itself.

And also use null in the assert messages.

Only a few occurrences of "NULL" are still left in non-C files, mostly
corresponding to unclear comments or string output which it might not be
safe to change.
2022-10-18 01:25:25 +02:00

230 lines
6.7 KiB
C++

/////////////////////////////////////////////////////////////////////////////
// Program: wxWidgets Widgets Sample
// Name: fontpicker.cpp
// Purpose: Shows wxFontPickerCtrl
// Author: Francesco Montorsi
// Created: 20/6/2006
// Copyright: (c) 2006 Francesco Montorsi
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// ============================================================================
// declarations
// ============================================================================
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
// for compilers that support precompilation, includes "wx/wx.h".
#include "wx/wxprec.h"
#if wxUSE_FONTPICKERCTRL
// for all others, include the necessary headers
#ifndef WX_PRECOMP
#include "wx/app.h"
#include "wx/log.h"
#include "wx/radiobox.h"
#endif
#include "wx/artprov.h"
#include "wx/sizer.h"
#include "wx/stattext.h"
#include "wx/checkbox.h"
#include "wx/imaglist.h"
#include "wx/fontpicker.h"
#include "widgets.h"
#include "icons/fontpicker.xpm"
// ----------------------------------------------------------------------------
// constants
// ----------------------------------------------------------------------------
// control ids
enum
{
PickerPage_Reset = wxID_HIGHEST,
PickerPage_Font
};
// ----------------------------------------------------------------------------
// FontPickerWidgetsPage
// ----------------------------------------------------------------------------
class FontPickerWidgetsPage : public WidgetsPage
{
public:
FontPickerWidgetsPage(WidgetsBookCtrl *book, wxImageList *imaglist);
virtual wxWindow *GetWidget() const override { return m_fontPicker; }
virtual void RecreateWidget() override { RecreatePicker(); }
// lazy creation of the content
virtual void CreateContent() override;
protected:
// called only once at first construction
void CreatePicker();
// called to recreate an existing control
void RecreatePicker();
// restore the checkboxes state to the initial values
void Reset();
void OnFontChange(wxFontPickerEvent &ev);
void OnCheckBox(wxCommandEvent &ev);
void OnButtonReset(wxCommandEvent &ev);
// the picker
wxFontPickerCtrl *m_fontPicker;
// other controls
// --------------
wxCheckBox *m_chkFontTextCtrl,
*m_chkFontDescAsLabel,
*m_chkFontUseFontForLabel;
wxBoxSizer *m_sizer;
private:
wxDECLARE_EVENT_TABLE();
DECLARE_WIDGETS_PAGE(FontPickerWidgetsPage)
};
// ----------------------------------------------------------------------------
// event tables
// ----------------------------------------------------------------------------
wxBEGIN_EVENT_TABLE(FontPickerWidgetsPage, WidgetsPage)
EVT_BUTTON(PickerPage_Reset, FontPickerWidgetsPage::OnButtonReset)
EVT_FONTPICKER_CHANGED(PickerPage_Font, FontPickerWidgetsPage::OnFontChange)
EVT_CHECKBOX(wxID_ANY, FontPickerWidgetsPage::OnCheckBox)
wxEND_EVENT_TABLE()
// ============================================================================
// implementation
// ============================================================================
#if defined(__WXGTK__)
#define FAMILY_CTRLS NATIVE_CTRLS
#else
#define FAMILY_CTRLS GENERIC_CTRLS
#endif
IMPLEMENT_WIDGETS_PAGE(FontPickerWidgetsPage, "FontPicker",
PICKER_CTRLS | FAMILY_CTRLS);
FontPickerWidgetsPage::FontPickerWidgetsPage(WidgetsBookCtrl *book,
wxImageList *imaglist)
: WidgetsPage(book, imaglist, fontpicker_xpm)
{
}
void FontPickerWidgetsPage::CreateContent()
{
// left pane
wxSizer *boxleft = new wxBoxSizer(wxVERTICAL);
wxStaticBoxSizer *fontbox = new wxStaticBoxSizer(wxVERTICAL, this, "&FontPicker style");
m_chkFontTextCtrl = CreateCheckBoxAndAddToSizer(fontbox, "With textctrl");
m_chkFontDescAsLabel = CreateCheckBoxAndAddToSizer(fontbox, "Font desc as btn label");
m_chkFontUseFontForLabel = CreateCheckBoxAndAddToSizer(fontbox, "Use font for label");
boxleft->Add(fontbox, 0, wxALL|wxGROW, 5);
boxleft->Add(new wxButton(this, PickerPage_Reset, "&Reset"),
0, wxALIGN_CENTRE_HORIZONTAL | wxALL, 15);
Reset(); // set checkboxes state
// create pickers
m_fontPicker = nullptr;
CreatePicker();
// right pane
m_sizer = new wxBoxSizer(wxVERTICAL);
m_sizer->Add(1, 1, 1, wxGROW | wxALL, 5); // spacer
m_sizer->Add(m_fontPicker, 0, wxALIGN_CENTER|wxALL, 5);
m_sizer->Add(1, 1, 1, wxGROW | wxALL, 5); // spacer
// global pane
wxSizer *sz = new wxBoxSizer(wxHORIZONTAL);
sz->Add(boxleft, 0, wxGROW|wxALL, 5);
sz->Add(m_sizer, 1, wxGROW|wxALL, 5);
SetSizer(sz);
}
void FontPickerWidgetsPage::CreatePicker()
{
delete m_fontPicker;
long style = GetAttrs().m_defaultFlags;
if ( m_chkFontTextCtrl->GetValue() )
style |= wxFNTP_USE_TEXTCTRL;
if ( m_chkFontUseFontForLabel->GetValue() )
style |= wxFNTP_USEFONT_FOR_LABEL;
if ( m_chkFontDescAsLabel->GetValue() )
style |= wxFNTP_FONTDESC_AS_LABEL;
m_fontPicker = new wxFontPickerCtrl(this, PickerPage_Font,
*wxSWISS_FONT,
wxDefaultPosition, wxDefaultSize,
style);
}
void FontPickerWidgetsPage::RecreatePicker()
{
m_sizer->Remove(1);
CreatePicker();
m_sizer->Insert(1, m_fontPicker, 0, wxALIGN_CENTER|wxALL, 5);
m_sizer->Layout();
}
void FontPickerWidgetsPage::Reset()
{
m_chkFontTextCtrl->SetValue((wxFNTP_DEFAULT_STYLE & wxFNTP_USE_TEXTCTRL) != 0);
m_chkFontUseFontForLabel->SetValue((wxFNTP_DEFAULT_STYLE & wxFNTP_USEFONT_FOR_LABEL) != 0);
m_chkFontDescAsLabel->SetValue((wxFNTP_DEFAULT_STYLE & wxFNTP_FONTDESC_AS_LABEL) != 0);
}
// ----------------------------------------------------------------------------
// event handlers
// ----------------------------------------------------------------------------
void FontPickerWidgetsPage::OnButtonReset(wxCommandEvent& WXUNUSED(event))
{
Reset();
RecreatePicker();
}
void FontPickerWidgetsPage::OnFontChange(wxFontPickerEvent& event)
{
wxLogMessage("The font changed to '%s' with size %d !",
event.GetFont().GetFaceName(), event.GetFont().GetPointSize());
}
void FontPickerWidgetsPage::OnCheckBox(wxCommandEvent &event)
{
if (event.GetEventObject() == m_chkFontTextCtrl ||
event.GetEventObject() == m_chkFontDescAsLabel ||
event.GetEventObject() == m_chkFontUseFontForLabel)
RecreatePicker();
}
#endif // wxUSE_FONTPICKERCTRL