wxWidgets/samples/html/printing/printing.cpp
2002-03-17 14:16:03 +00:00

249 lines
7.2 KiB
C++

/////////////////////////////////////////////////////////////////////////////
// Name: printimg.cpp
// Purpose: wxHtmlEasyPrinting testing example
/////////////////////////////////////////////////////////////////////////////
// For compilers that support precompilation, includes "wx/wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
// for all others, include the necessary headers (this file is usually all you
// need because it includes almost all "standard" wxWindows headers
#ifndef WX_PRECOMP
#include "wx/wx.h"
#endif
#include "wx/image.h"
#include "wx/html/htmlwin.h"
#include "wx/html/htmprint.h"
// ----------------------------------------------------------------------------
// private classes
// ----------------------------------------------------------------------------
// Define a new application type, each program should derive a class from wxApp
class MyApp : public wxApp
{
public:
// override base class virtuals
// ----------------------------
// this one is called on application startup and is a good place for the app
// initialization (doing it here and not in the ctor allows to have an error
// return: if OnInit() returns false, the application terminates)
virtual bool OnInit();
};
// Define a new frame type: this is going to be our main frame
class MyFrame : public wxFrame
{
public:
// ctor and dtor
MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size);
virtual ~MyFrame();
// event handlers (these functions should _not_ be virtual)
void OnQuit(wxCommandEvent& event);
void OnAbout(wxCommandEvent& event);
void OnPrintSetup(wxCommandEvent& event);
void OnPageSetup(wxCommandEvent& event);
void OnPrint(wxCommandEvent& event);
void OnPreview(wxCommandEvent& event);
void OnOpen(wxCommandEvent& event);
private:
wxHtmlWindow *m_Html;
wxHtmlEasyPrinting *m_Prn;
wxString m_Name;
// any class wishing to process wxWindows events must use this macro
DECLARE_EVENT_TABLE()
};
// ----------------------------------------------------------------------------
// constants
// ----------------------------------------------------------------------------
// IDs for the controls and the menu commands
enum
{
// menu items
Minimal_Quit = 1,
Minimal_About,
Minimal_Print,
Minimal_Preview,
Minimal_PageSetup,
Minimal_PrintSetup,
Minimal_Open
};
// ----------------------------------------------------------------------------
// event tables and other macros for wxWindows
// ----------------------------------------------------------------------------
// the event tables connect the wxWindows events with the functions (event
// handlers) which process them. It can be also done at run-time, but for the
// simple menu events like this the static method is much simpler.
BEGIN_EVENT_TABLE(MyFrame, wxFrame)
EVT_MENU(Minimal_Quit, MyFrame::OnQuit)
EVT_MENU(Minimal_About, MyFrame::OnAbout)
EVT_MENU(Minimal_Print, MyFrame::OnPrint)
EVT_MENU(Minimal_Preview, MyFrame::OnPreview)
EVT_MENU(Minimal_PageSetup, MyFrame::OnPageSetup)
EVT_MENU(Minimal_PrintSetup, MyFrame::OnPrintSetup)
EVT_MENU(Minimal_Open, MyFrame::OnOpen)
END_EVENT_TABLE()
// Create a new application object: this macro will allow wxWindows to create
// the application object during program execution (it's better than using a
// static object for many reasons) and also declares the accessor function
// wxGetApp() which will return the reference of the right type (i.e. MyApp and
// not wxApp)
IMPLEMENT_APP(MyApp)
// ============================================================================
// implementation
// ============================================================================
// ----------------------------------------------------------------------------
// the application class
// ----------------------------------------------------------------------------
// `Main program' equivalent: the program execution "starts" here
bool MyApp::OnInit()
{
#if wxUSE_LIBPNG
wxImage::AddHandler(new wxPNGHandler);
#endif
#if wxUSE_LIBJPEG
wxImage::AddHandler(new wxJPEGHandler);
#endif
#if wxUSE_GIF
wxImage::AddHandler(new wxGIFHandler);
#endif
MyFrame *frame = new MyFrame("Printing test",
wxPoint(150, 50), wxSize(640, 480));
// Show it and tell the application that it's our main window
// @@@ what does it do exactly, in fact? is it necessary here?
frame->Show(TRUE);
SetTopWindow(frame);
// success: wxApp::OnRun() will be called which will enter the main message
// loop and the application will run. If we returned FALSE here, the
// application would exit immediately.
return TRUE;
}
// ----------------------------------------------------------------------------
// main frame
// ----------------------------------------------------------------------------
// frame constructor
MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
: wxFrame((wxFrame *)NULL, -1, title, pos, size)
{
// create a menu bar
wxMenu *menuFile = new wxMenu;
menuFile->Append(Minimal_Open, "Open...\tCtrl-O");
menuFile->AppendSeparator();
menuFile->Append(Minimal_PageSetup, "Page Setup");
menuFile->Append(Minimal_PrintSetup, "Printer Setup");
menuFile->Append(Minimal_Print, "Print...");
menuFile->Append(Minimal_Preview, "Preview...");
menuFile->AppendSeparator();
menuFile->Append(Minimal_About, "&About");
menuFile->AppendSeparator();
menuFile->Append(Minimal_Quit, "&Exit");
// now append the freshly created menu to the menu bar...
wxMenuBar *menuBar = new wxMenuBar;
menuBar->Append(menuFile, "&File");
// ... and attach this menu bar to the frame
SetMenuBar(menuBar);
CreateStatusBar(1);
m_Html = new wxHtmlWindow(this);
m_Html -> SetRelatedFrame(this, "HTML : %s");
m_Html -> SetRelatedStatusBar(0);
m_Name = "test.htm";
m_Html -> LoadPage(m_Name);
m_Prn = new wxHtmlEasyPrinting("Easy Printing Demo", this);
m_Prn -> SetHeader(m_Name + "(@PAGENUM@/@PAGESCNT@)<hr>", wxPAGE_ALL);
}
// frame destructor
MyFrame::~MyFrame()
{
delete m_Prn;
m_Prn = (wxHtmlEasyPrinting *) NULL;
}
// event handlers
void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
{
// TRUE is to force the frame to close
Close(TRUE);
}
void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
{
wxMessageBox("HTML printing sample\n\n(c) Vaclav Slavik, 1999");
}
void MyFrame::OnPrintSetup(wxCommandEvent& WXUNUSED(event))
{
m_Prn -> PrinterSetup();
}
void MyFrame::OnPageSetup(wxCommandEvent& WXUNUSED(event))
{
m_Prn -> PageSetup();
}
void MyFrame::OnPrint(wxCommandEvent& WXUNUSED(event))
{
m_Prn -> PrintFile(m_Name);
}
void MyFrame::OnPreview(wxCommandEvent& WXUNUSED(event))
{
m_Prn -> PreviewFile(m_Name);
}
void MyFrame::OnOpen(wxCommandEvent& WXUNUSED(event))
{
wxFileDialog dialog(this, "Open HTML page", "", "", "*.htm", 0);
if (dialog.ShowModal() == wxID_OK)
{
m_Name = dialog.GetPath();
m_Html -> LoadPage(m_Name);
m_Prn -> SetHeader(m_Name + "(@PAGENUM@/@PAGESCNT@)<hr>", wxPAGE_ALL);
}
}