#include "wx/mstream.h"
#include "wx/wfstream.h"
#include "wx/quantize.h"
+#include "wx/stopwatch.h"
#if wxUSE_CLIPBOARD
#include "wx/dataobj.h"
void OnAbout( wxCommandEvent &event );
void OnNewFrame( wxCommandEvent &event );
+ void OnImageInfo( wxCommandEvent &event );
+ void OnThumbnail( wxCommandEvent &event );
+
#ifdef wxHAVE_RAW_BITMAP
void OnTestRawBitmap( wxCommandEvent &event );
#endif // wxHAVE_RAW_BITMAP
MyCanvas *m_canvas;
private:
+ // ask user for the file name and try to load an image from it
+ //
+ // return the file path on success, empty string if we failed to load the
+ // image or were cancelled by user
+ static wxString LoadUserImage(wxImage& image);
+
+
DECLARE_DYNAMIC_CLASS(MyFrame)
DECLARE_EVENT_TABLE()
};
enum
{
- ID_ROTATE_LEFT = 100,
+ ID_ROTATE_LEFT = wxID_HIGHEST+1,
ID_ROTATE_RIGHT,
- ID_RESIZE
+ ID_RESIZE,
+ ID_PAINT_BG
};
class MyImageFrame : public wxFrame
wxMenu *menu = new wxMenu;
menu->Append(wxID_SAVE);
menu->AppendSeparator();
+ m_pClearBgMenu = menu->AppendCheckItem(ID_PAINT_BG, _T("&Paint background"));
+ menu->AppendSeparator();
menu->Append(ID_RESIZE, _T("&Fit to window\tCtrl-F"));
menu->AppendSeparator();
menu->Append(ID_ROTATE_LEFT, _T("Rotate &left\tCtrl-L"));
SetClientSize(bitmap.GetWidth(), bitmap.GetHeight());
UpdateStatusBar();
+
+// SetBackgroundColour(*wxWHITE);
}
void OnEraseBackground(wxEraseEvent& WXUNUSED(event))
void OnPaint(wxPaintEvent& WXUNUSED(event))
{
wxPaintDC dc(this);
+
+ if (m_pClearBgMenu->IsChecked())
+ ClearBackground();
+
const wxSize size = GetClientSize();
dc.DrawBitmap(m_bitmap,
(size.x - m_bitmap.GetWidth())/2,
}
wxBitmap m_bitmap;
+ wxMenuItem* m_pClearBgMenu;
DECLARE_EVENT_TABLE()
};
ID_QUIT = wxID_EXIT,
ID_ABOUT = wxID_ABOUT,
ID_NEW = 100,
- ID_SHOWRAW = 101
+ ID_INFO,
+ ID_SHOWRAW,
+ ID_SHOWTHUMBNAIL
};
IMPLEMENT_DYNAMIC_CLASS( MyFrame, wxFrame )
-BEGIN_EVENT_TABLE(MyFrame,wxFrame)
+BEGIN_EVENT_TABLE(MyFrame, wxFrame)
EVT_MENU (ID_ABOUT, MyFrame::OnAbout)
EVT_MENU (ID_QUIT, MyFrame::OnQuit)
- EVT_MENU (ID_NEW, MyFrame::OnNewFrame)
+ EVT_MENU (ID_NEW, MyFrame::OnNewFrame)
+ EVT_MENU (ID_INFO, MyFrame::OnImageInfo)
+ EVT_MENU (ID_SHOWTHUMBNAIL, MyFrame::OnThumbnail)
#ifdef wxHAVE_RAW_BITMAP
- EVT_MENU (ID_SHOWRAW, MyFrame::OnTestRawBitmap)
+ EVT_MENU (ID_SHOWRAW, MyFrame::OnTestRawBitmap)
#endif
#if wxUSE_CLIPBOARD
wxMenu *menuImage = new wxMenu;
menuImage->Append( ID_NEW, _T("&Show any image...\tCtrl-O"));
-
+ menuImage->Append( ID_INFO, _T("Show image &information...\tCtrl-I"));
#ifdef wxHAVE_RAW_BITMAP
+ menuImage->AppendSeparator();
menuImage->Append( ID_SHOWRAW, _T("Test &raw bitmap...\tCtrl-R"));
#endif
menuImage->AppendSeparator();
+ menuImage->Append( ID_SHOWTHUMBNAIL, _T("Test &thumbnail...\tCtrl-T"),
+ "Test scaling the image during load (try with JPEG)");
+ menuImage->AppendSeparator();
menuImage->Append( ID_ABOUT, _T("&About..."));
menuImage->AppendSeparator();
menuImage->Append( ID_QUIT, _T("E&xit\tCtrl-Q"));
_T("About wxImage Demo"), wxICON_INFORMATION | wxOK );
}
-void MyFrame::OnNewFrame( wxCommandEvent &WXUNUSED(event) )
+wxString MyFrame::LoadUserImage(wxImage& image)
{
+ wxString filename;
+
#if wxUSE_FILEDLG
- wxString filename = wxFileSelector(_T("Select image file"));
- if ( !filename )
- return;
+ filename = wxFileSelector(_T("Select image file"));
+ if ( !filename.empty() )
+ {
+ if ( !image.LoadFile(filename) )
+ {
+ wxLogError(_T("Couldn't load image from '%s'."), filename.c_str());
+
+ return wxEmptyString;
+ }
+ }
+#endif // wxUSE_FILEDLG
+
+ return filename;
+}
+void MyFrame::OnNewFrame( wxCommandEvent &WXUNUSED(event) )
+{
wxImage image;
- if ( !image.LoadFile(filename) )
+ wxString filename = LoadUserImage(image);
+ if ( !filename.empty() )
+ (new MyImageFrame(this, filename, wxBitmap(image)))->Show();
+}
+
+void MyFrame::OnImageInfo( wxCommandEvent &WXUNUSED(event) )
+{
+ wxImage image;
+ if ( !LoadUserImage(image).empty() )
{
- wxLogError(_T("Couldn't load image from '%s'."), filename.c_str());
+ // TODO: show more information about the file
+ wxString info = wxString::Format("Image size: %dx%d",
+ image.GetWidth(),
+ image.GetHeight());
+
+ int xres = image.GetOptionInt(wxIMAGE_OPTION_RESOLUTIONX),
+ yres = image.GetOptionInt(wxIMAGE_OPTION_RESOLUTIONY);
+ if ( xres || yres )
+ {
+ info += wxString::Format("\nResolution: %dx%d", xres, yres);
+ switch ( image.GetOptionInt(wxIMAGE_OPTION_RESOLUTIONUNIT) )
+ {
+ default:
+ wxFAIL_MSG( "unknown image resolution units" );
+ // fall through
- return;
- }
+ case wxIMAGE_RESOLUTION_NONE:
+ info += " in default units";
+ break;
- (new MyImageFrame(this, filename, wxBitmap(image)))->Show();
-#endif // wxUSE_FILEDLG
+ case wxIMAGE_RESOLUTION_INCHES:
+ info += " in";
+ break;
+
+ case wxIMAGE_RESOLUTION_CM:
+ info += " cm";
+ break;
+ }
+ }
+
+ wxLogMessage("%s", info);
+ }
}
#ifdef wxHAVE_RAW_BITMAP
return true;
}
+
+void MyFrame::OnThumbnail( wxCommandEvent &WXUNUSED(event) )
+{
+#if wxUSE_FILEDLG
+ wxString filename = wxFileSelector(_T("Select image file"));
+ if ( filename.empty() )
+ return;
+
+ static const int THUMBNAIL_WIDTH = 320;
+ static const int THUMBNAIL_HEIGHT = 240;
+
+ wxImage image;
+ image.SetOption(wxIMAGE_OPTION_MAX_WIDTH, THUMBNAIL_WIDTH);
+ image.SetOption(wxIMAGE_OPTION_MAX_HEIGHT, THUMBNAIL_HEIGHT);
+
+ wxStopWatch sw;
+ if ( !image.LoadFile(filename) )
+ {
+ wxLogError(_T("Couldn't load image from '%s'."), filename.c_str());
+ return;
+ }
+
+ const long loadTime = sw.Time();
+
+ MyImageFrame * const
+ frame = new MyImageFrame(this, filename, wxBitmap(image));
+ frame->Show();
+ wxLogStatus(frame, "Loaded \"%s\" in %ldms", filename, loadTime);
+#else
+ wxLogError( _T("Couldn't create file selector dialog") );
+ return;
+#endif // wxUSE_FILEDLG
+}
+
projects / wxWidgets.git / blobdiff