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