utils/nplugin/samples/gui/gui.cpp

   1 /*
   2  * File:        simple.cpp
   3  * Purpose:     Minimal wxWidgets plugin
   4  * Author:      Julian Smart
   5  * Created:     1997
   6  * Updated:
   7  * Copyright:   (c) Julian Smart
   8  */
   9
  10 /* static const char sccsid[] = "%W% %G%"; */
  11
  12 #ifdef __GNUG__
  13 #pragma implementation
  14 #pragma interface
  15 #endif
  16
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20 #pragma hdrstop
  21 #endif
  22
  23 #ifndef WX_PRECOMP
  24 #include "wx/wx.h"
  25 #endif
  26
  27 #include <fstream.h>
  28
  29 #include "NPApp.h"
  30 #include "NPFrame.h"
  31
  32 #define ID_HELLO    10
  33
  34 // Define a new application type
  35 class MyApp: public wxPluginApp
  36 { public:
  37     virtual wxFrame *OnInit(void);
  38     virtual wxPluginFrame* OnNewInstance(const wxPluginData& data);
  39 };
  40
  41 // Define a new frame type
  42 class MyFrame: public wxPluginFrame
  43 { public:
  44     MyFrame(const wxPluginData& data);
  45
  46  public:
  47     // Let's paint directly onto the 'frame'; we don't need a subwindow
  48     void OnPaint(wxPaintEvent& event);
  49     void OnMouseEvent(wxMouseEvent& event);
  50     void OnHello(wxCommandEvent& event);
  51
  52     // Called when the file has been downloaded
  53     virtual void OnNPNewFile(NPStream *stream, const wxString& fname);
  54
  55     void CentreStrings(wxDC& dc);
  56
  57    DECLARE_EVENT_TABLE()
  58
  59  protected:
  60     wxStringList    m_strings;
  61     float           m_xpos;
  62     float           m_ypos;
  63 };
  64
  65 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
  66         EVT_SIZE(MyFrame::OnSize)
  67         EVT_PAINT(MyFrame::OnPaint)
  68         EVT_MOUSE_EVENTS(MyFrame::OnMouseEvent)
  69         EVT_BUTTON(ID_HELLO, MyFrame::OnHello)
  70 END_EVENT_TABLE()
  71
  72 IMPLEMENT_APP(MyApp)
  73
  74 // No app initialisation necessary, and for a plugin there is no
  75 // top frame.
  76 wxFrame *MyApp::OnInit(void)
  77 {
  78     return NULL;
  79 }
  80
  81 // Called whenever a new plugin instance is called. We could check
  82 // various things here in 'data' but we won't bother.
  83 wxPluginFrame* MyApp::OnNewInstance(const wxPluginData& data)
  84 {
  85     // Implicitly added to list of plugin frames
  86     return new MyFrame(data);
  87 }
  88
  89 // My frame constructor
  90 MyFrame::MyFrame(const wxPluginData& data):
  91   wxPluginFrame(data)
  92 {
  93     m_xpos = -1;
  94     m_ypos = -1;
  95
  96     wxMenuBar *menuBar = new wxMenuBar;
  97     wxMenu *menu = new wxMenu;
  98     menu->Append(1, "E&xit");
  99     menuBar->Append(menu, "&File");
 100
 101     SetMenuBar(menuBar);
 102
 103     new wxTextCtrl(this, -1, "", wxPoint(10, 30), wxSize(200, 25), wxSUNKEN_BORDER);
 104     new wxButton(this, ID_HELLO, "Hello", wxPoint(10, 70));
 105 }
 106
 107 void MyFrame::OnPaint(wxPaintEvent& event)
 108 {
 109     wxPaintDC dc(this);
 110
 111     dc.SetBrush(*wxCYAN_BRUSH);
 112     dc.SetPen(*wxRED_PEN);
 113
 114     int w, h;
 115     GetClientSize(&w, &h);
 116
 117     dc.DrawRectangle(0, 0, w, h);
 118
 119     wxFont swissFont(10, wxSWISS, wxNORMAL, wxNORMAL);
 120     dc.SetFont(swissFont);
 121     dc.SetBackgroundMode(wxTRANSPARENT);
 122
 123     CentreStrings(dc);
 124 }
 125
 126 // Called when the file has been downloaded
 127 void MyFrame::OnNPNewFile(NPStream *stream, const wxString& fname)
 128 {
 129     ifstream str(fname);
 130     char buf[201];
 131
 132     while ( !str.eof() )
 133     {
 134         buf[0] = 0;
 135         str.getline(buf, 200);
 136
 137         if ( buf[0] != 0 )
 138             m_strings.Add(buf);
 139     }
 140     Refresh();
 141 }
 142
 143 void MyFrame::CentreStrings(wxDC& dc)
 144 {
 145     int y = 5;
 146     int cw, ch;
 147     GetClientSize(&cw, &ch);
 148
 149     wxNode *node = m_strings.First();
 150     while ( node )
 151     {
 152         char *s = (char *)node->Data();
 153         float w, h;
 154         dc.GetTextExtent(s, &w, &h);
 155
 156         int x = wxMax(0, (cw - w)/2);
 157         dc.DrawText(s, x, y);
 158
 159         y += h + (h/2);
 160
 161         node = node->Next();
 162     }
 163 }
 164
 165 // This implements a tiny doodling program. Drag the mouse using
 166 // the left button.
 167 void MyFrame::OnMouseEvent(wxMouseEvent& event)
 168 {
 169   float x, y;
 170   event.Position(&x, &y);
 171   wxClientDC dc(this);
 172
 173   if (m_xpos > -1 && m_ypos > -1 && event.Dragging() && event.LeftIsDown())
 174   {
 175     dc.SetPen(wxBLACK_PEN);
 176     dc.SetBrush(wxTRANSPARENT_BRUSH);
 177     dc.DrawLine(m_xpos, m_ypos, x, y);
 178   }
 179   m_xpos = x;
 180   m_ypos = y;
 181 }
 182
 183 void MyFrame::OnHello(wxCommandEvent& event)
 184 {
 185     wxMessageBox("Hello!");
 186 }