samples/widgets/statbmp.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Program:     wxWidgets Widgets Sample
   3 // Name:        statbmp.cpp
   4 // Purpose:     Part of the widgets sample showing wxStaticBitmap
   5 // Author:      Marcin Wojdyr
   6 // Created:     2008-06-19
   7 // Copyright:   (c) 2008 Marcin Wojdyr
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 // ============================================================================
  12 // declarations
  13 // ============================================================================
  14
  15 // ----------------------------------------------------------------------------
  16 // headers
  17 // ----------------------------------------------------------------------------
  18
  19 // for compilers that support precompilation, includes "wx/wx.h".
  20 #include "wx/wxprec.h"
  21
  22 #ifdef __BORLANDC__
  23     #pragma hdrstop
  24 #endif
  25
  26 // for all others, include the necessary headers
  27 #ifndef WX_PRECOMP
  28     #include "wx/log.h"
  29
  30     #include "wx/button.h"
  31     #include "wx/image.h"
  32     #include "wx/radiobox.h"
  33     #include "wx/statbmp.h"
  34     #include "wx/statbox.h"
  35     #include "wx/textctrl.h"
  36 #endif
  37
  38 #include "wx/filename.h"
  39
  40 #include "wx/generic/statbmpg.h"
  41 #include "wx/sizer.h"
  42 #include "wx/filepicker.h"
  43
  44 #include "widgets.h"
  45 #include "icons/statbmp.xpm"
  46
  47
  48 class StatBmpWidgetsPage : public WidgetsPage
  49 {
  50 public:
  51     StatBmpWidgetsPage(WidgetsBookCtrl *book, wxImageList *imaglist)
  52         : WidgetsPage(book, imaglist, statbmp_xpm) {}
  53
  54     virtual void CreateContent();
  55     virtual wxControl *GetWidget() const { return m_statbmp; }
  56     virtual void RecreateWidget();
  57
  58 private:
  59     void OnFileChange(wxFileDirPickerEvent &WXUNUSED(ev)) { RecreateWidget(); }
  60     void OnRadioChange(wxCommandEvent &WXUNUSED(ev)) { RecreateWidget(); }
  61
  62     void OnMouseEvent(wxMouseEvent& WXUNUSED(event))
  63     {
  64         wxLogMessage(wxT("wxStaticBitmap clicked."));
  65     }
  66
  67     wxStaticBitmapBase *m_statbmp;
  68     wxFilePickerCtrl *m_filepicker;
  69     wxRadioBox *m_radio;
  70     wxStaticBoxSizer *m_sbsizer;
  71
  72     DECLARE_WIDGETS_PAGE(StatBmpWidgetsPage)
  73 };
  74
  75 IMPLEMENT_WIDGETS_PAGE(StatBmpWidgetsPage, wxT("StaticBitmap"),
  76                        ALL_CTRLS);
  77
  78 void StatBmpWidgetsPage::CreateContent()
  79 {
  80
  81     static const wxString choices[] = { "native", "generic" };
  82     m_radio = new wxRadioBox(this, wxID_ANY, "implementation",
  83                              wxDefaultPosition, wxDefaultSize,
  84                              WXSIZEOF(choices), choices);
  85
  86     wxString testImage;
  87 #if wxUSE_LIBPNG
  88     wxFileName fn("../image/toucan.png");
  89     if ( fn.FileExists() )
  90         testImage = fn.GetFullPath();
  91 #endif // wxUSE_LIBPNG
  92     m_filepicker = new wxFilePickerCtrl(this, wxID_ANY, testImage);
  93
  94     m_sbsizer = new wxStaticBoxSizer(wxVERTICAL, this, "wxStaticBitmap inside");
  95
  96     wxSizer *leftsizer = new wxBoxSizer(wxVERTICAL);
  97     leftsizer->Add(m_radio, wxSizerFlags().Expand().Border());
  98     leftsizer->Add(m_filepicker, wxSizerFlags().Expand().Border());
  99     wxSizer *sizer = new wxBoxSizer(wxHORIZONTAL);
 100     sizer->Add(leftsizer, wxSizerFlags().Border());
 101     sizer->Add(m_sbsizer, wxSizerFlags().Center());
 102     SetSizer(sizer);
 103
 104     wxInitAllImageHandlers();
 105
 106     Connect(wxEVT_FILEPICKER_CHANGED,
 107             wxFileDirPickerEventHandler(StatBmpWidgetsPage::OnFileChange));
 108     Connect(wxEVT_RADIOBOX,
 109             wxCommandEventHandler(StatBmpWidgetsPage::OnRadioChange));
 110
 111     m_statbmp = NULL;
 112     RecreateWidget();
 113 }
 114
 115 void StatBmpWidgetsPage::RecreateWidget()
 116 {
 117     wxDELETE(m_statbmp);
 118
 119     wxString filepath = m_filepicker->GetPath();
 120     if ( filepath.empty() )
 121         return;
 122
 123     wxImage image(filepath);
 124     if (! image.IsOk() )
 125     {
 126         wxLogMessage("Reading image from file '%s' failed.", filepath.c_str());
 127         return;
 128     }
 129     if (m_radio->GetSelection() == 0)
 130         m_statbmp = new wxStaticBitmap(this, wxID_ANY, wxBitmap(image));
 131     else
 132         m_statbmp = new wxGenericStaticBitmap(this, wxID_ANY, wxBitmap(image));
 133     m_sbsizer->Add(m_statbmp, wxSizerFlags(1).Expand());
 134     GetSizer()->Layout();
 135     m_statbmp->Connect(wxEVT_LEFT_DOWN,
 136                        wxMouseEventHandler(StatBmpWidgetsPage::OnMouseEvent),
 137                        NULL, this);
 138     // When switching from generic to native control on wxMSW under Wine,
 139     // the explicit Refresh() is necessary
 140     m_statbmp->Refresh();
 141 }
 142