// Compile:
// g++ `wx-config --cppflags --libs` wxhello.cpp -o wxhello
//

#include <wx/wx.h>
#include <wx/print.h>
#include <wx/printdlg.h>
#include <wx/dcps.h>

#define PI 3.141592

class HelloWorldApp : public wxApp {
public:
  bool OnInit();
};

class MyFrame : public wxFrame {
public:

  MyFrame(wxWindow *parent, const wxString& title);
  void OnMenuFileOpen(wxCommandEvent &event);
  void OnMenuFileSave(wxCommandEvent &event);
  void OnMenuFileQuit(wxCommandEvent &event);
  void OnMenuFileBitmap(wxCommandEvent &e);
  void OnMenuInfoAbout(wxCommandEvent &event); 
  void OnMenuFileScreenShot(wxCommandEvent &e);
  void OnMenuFilePrint(wxCommandEvent &e);
  void OnPaint(wxPaintEvent &event);
  void OnMotion(wxMouseEvent& event);
  void Paint(wxDC &dc);

private:

  wxTextCtrl *m_pTextCtrl;  // Pekare till text-editor-objektet
  wxMenuBar *m_pMenuBar;
  wxMenu *m_pFileMenu;
  wxMenu *m_pInfoMenu;
  enum
    {
      MENU_FILE_OPEN,
      MENU_FILE_SAVE,
      MENU_FILE_QUIT,
      MENU_FILE_PRINT,
      MENU_FILE_SS,
      MENU_INFO_ABOUT,
      MENU_FILE_BITMAP
    };

  protected:
  DECLARE_EVENT_TABLE() //Klassen har en event table
};

DECLARE_APP(HelloWorldApp) // Skapar en global att nå denna appl.
IMPLEMENT_APP(HelloWorldApp) // Skapar kod, antingen main() eller WinMain() beroende på plattform



BEGIN_EVENT_TABLE(MyFrame, wxFrame)
EVT_MENU(MENU_FILE_OPEN, MyFrame::OnMenuFileOpen)
EVT_MENU(MENU_FILE_SAVE, MyFrame::OnMenuFileSave)
EVT_MENU(MENU_FILE_BITMAP, MyFrame::OnMenuFileBitmap)
EVT_MENU(MENU_FILE_SS, MyFrame::OnMenuFileScreenShot)
EVT_MENU(MENU_FILE_PRINT, MyFrame::OnMenuFilePrint)
EVT_MENU(MENU_FILE_QUIT, MyFrame::OnMenuFileQuit)
EVT_MENU(MENU_INFO_ABOUT, MyFrame::OnMenuInfoAbout)
EVT_MOTION(MyFrame::OnMotion)
EVT_PAINT(MyFrame::OnPaint)

END_EVENT_TABLE()

MyFrame::MyFrame(wxWindow *parent, const wxString& title)
  : wxFrame(parent, -1, title)
{
  //  m_pTextCtrl = new wxTextCtrl(this, -1, wxString(L"Mata in text, tack"),wxDefaultPosition, wxDefaultSize, wxTE_MULTILINE);
  m_pMenuBar = new wxMenuBar();
  // File Menu
  m_pFileMenu = new wxMenu();
  // Notera, ampersand (&) ger automatisk keyboard-shortcut
  m_pFileMenu->Append(MENU_FILE_OPEN, L"Open");
  m_pFileMenu->Append(MENU_FILE_SAVE, L"&Save");
  m_pFileMenu->Append(MENU_FILE_BITMAP, L"&Bitmap");
  m_pFileMenu->Append(MENU_FILE_SS, L"ScreenS&hot");
  m_pFileMenu->Append(MENU_FILE_PRINT, L"&Print");
  m_pFileMenu->AppendSeparator();
  m_pFileMenu->Append(MENU_FILE_QUIT, L"&Quit");
  m_pMenuBar->Append(m_pFileMenu, L"&File");
  // About menu
  m_pInfoMenu = new wxMenu();
  m_pInfoMenu->Append(MENU_INFO_ABOUT, L"&About");
  m_pMenuBar->Append(m_pInfoMenu, L"&Info");
  SetMenuBar(m_pMenuBar); //Här sätter vi ny menyrad till fönstret

  // Add accelerators
  wxAcceleratorEntry entries[4];
  entries[0].Set(wxACCEL_CTRL, (int) 'O', MENU_FILE_OPEN); 
  entries[1].Set(wxACCEL_CTRL, (int) 'S', MENU_FILE_SAVE); 
  entries[2].Set(wxACCEL_CTRL, (int) 'X', MENU_FILE_QUIT); 
  entries[3].Set(wxACCEL_SHIFT, (int) 'A', MENU_INFO_ABOUT); 
  wxAcceleratorTable accel(4, entries); 
  SetAcceleratorTable(accel); 


}

void MyFrame::OnMenuFileOpen(wxCommandEvent &event) 
{
SetStatusText(L"File open aktiverad");
 wxFileDialog *dlg = new wxFileDialog(this, L"Open a text file", L"", L"", L"All files(*.*)|*.*|Text Files(*.txt)|*.txt", wxOPEN, wxDefaultPosition);
 if ( dlg->ShowModal() == wxID_OK) {
   m_pTextCtrl->LoadFile(dlg->GetPath());
   SetStatusText(dlg->GetFilename(), 0);
 }
 dlg->Destroy();
}



void MyFrame::OnMenuFileSave(wxCommandEvent &event)
{SetStatusText(L"File save aktiverad");
  wxFileDialog *dlg = new wxFileDialog(this, L"Save a text file",
				      L"", L"", L"All files(*.*)|*.*|Text Files(*.txt)|*.txt",
				       wxSAVE, wxDefaultPosition);
  if ( dlg->ShowModal() == wxID_OK ) {
    m_pTextCtrl->SaveFile(dlg->GetPath());
    SetStatusText(dlg->GetFilename(), 0);
  }
  dlg->Destroy();

}
void MyFrame::OnMenuFileQuit(wxCommandEvent &event) 
{Close(false);}
void MyFrame::OnMenuInfoAbout(wxCommandEvent &event)
{SetStatusText(L"About aktiverad");
  wxMessageBox(L"Minimal Hello World Text Editor\nC J Bjorkqvist,2005", L"About Hello World");

}
void MyFrame::OnPaint(wxPaintEvent &event) {
  wxPaintDC dc(this);
  Paint(dc);
}

void MyFrame::Paint(wxDC &dc) {

  dc.SetBackground(*wxGREEN_BRUSH);
  dc.Clear();
  
  wxCoord m,n;
  float rad;

  dc.GetSize(&m, &n);
  for (rad=0; rad< 2*PI; rad+=(float)(2.0*PI/100)) {
    wxCoord x,y;
    x = cos(rad)*m/5+m/2;
    y = sin(rad)*n/5+n/2;
    dc.DrawCircle(x,y, m<n?m/10:n/10);
  }
  wxFont f = dc.GetFont();
  f.SetPointSize(37);
  dc.SetFont(f); 
  dc.DrawText(L"Hello World", 30, 30);
}

void MyFrame::OnMotion(wxMouseEvent& event)
{
  if (event.Dragging())
			 {
			   wxClientDC dc(this);
			   wxPen pen(*wxRED, 5); // red pen of width 5
			   dc.SetPen(pen);
			   dc.DrawPoint(event.GetPosition());
			   dc.SetPen(wxNullPen);
			 }
}

void MyFrame::OnMenuFileBitmap(wxCommandEvent &e) {
  wxMemoryDC dc;
  wxBitmap bitmap(400,400);
  dc.SelectObject(bitmap);
  Paint(dc);
  
  wxFileDialog *dlg = new wxFileDialog(this, L"Save a bitmap file",
				       L"", L"", L"All files(*.*)|*.*|Text Files(*.bmp)|*.bmp",
				       wxSAVE, wxDefaultPosition);
  if ( dlg->ShowModal() == wxID_OK ) {
    bitmap.SaveFile(dlg->GetPath(), wxBITMAP_TYPE_BMP);
    SetStatusText(wxT("Saved bitmap in") + dlg->GetFilename(), 0);
  }
  dlg->Destroy();
}
void MyFrame::OnMenuFileScreenShot(wxCommandEvent &e) {
  wxSize screenSize = wxGetDisplaySize();
  wxBitmap bitmap(screenSize.x, screenSize.y);
  wxScreenDC dc;
  wxMemoryDC memDC;
  memDC.SelectObject(bitmap);
  memDC.Blit(0, 0, screenSize.x, screenSize.y, & dc, 0, 0);
  memDC.SelectObject(wxNullBitmap);

  wxFileDialog *dlg = new wxFileDialog(this, L"Save screenshot",
				       L"", L"", L"All files(*.*)|*.*|Text Files(*.bmp)|*.bmp",
				       wxSAVE, wxDefaultPosition);
  if ( dlg->ShowModal() == wxID_OK ) {
    bitmap.SaveFile(dlg->GetPath(), wxBITMAP_TYPE_BMP);
    SetStatusText(wxT("Saved screenshot in: ") + dlg->GetFilename(), 0);
  }

}

void MyFrame::OnMenuFilePrint(wxCommandEvent &e) {

wxPrintDialog *pd = new wxPrintDialog(this);
  if (pd->ShowModal() == wxID_OK) {
    wxDC *dc = pd->GetPrintDC();
    dc->StartDoc(L"wxhello");
    dc->StartPage();
    Paint(*dc);  // Använder samma ritfunktion
    dc->EndPage();
    dc->EndDoc();
    delete dc;
    }
} 


bool HelloWorldApp::OnInit() {
  MyFrame *frame = new MyFrame((MyFrame*) NULL, L"Hello World Title"); // Skapar ett nytt fönster
  frame->CreateStatusBar(); // lägger till status bar
  frame->SetStatusText(L"Hello World Status Bar"); // Text i status-bar
  frame->Show(TRUE); // Visar fönstret
  SetTopWindow(frame); // Sätt till topp-fönster
  return true; // Om returnerar false, avslutas allt genast
}