synthetize 'button up' event before doubleclick, too

[wxWidgets.git] / samples / png / pngdemo.cpp

diff --git a/samples/png/pngdemo.cpp b/samples/png/pngdemo.cpp
index 0106b34ed951dda758dc08f9f8323cbfdebbd749..0d88f11699226c48808d27b709e503b60085f0a7 100644 (file)
--- a/samples/png/pngdemo.cpp
+++ b/samples/png/pngdemo.cpp
@@ -20,14 +20,12 @@
 #pragma hdrstop
 #endif
 
 #pragma hdrstop
 #endif
 

-#ifdef __WINDOWS__
-#include <wx/pnghand.h>
-#endif
+#include "wx/image.h"

 
 #include "pngdemo.h"
 
 
 #include "pngdemo.h"
 

-MyFrame   *frame = NULL;
-wxBitmap  *g_TestBitmap = NULL;
+MyFrame   *frame = (MyFrame *) NULL;
+wxBitmap  *g_TestBitmap = (wxBitmap *) NULL;

 
 IMPLEMENT_APP(MyApp)
 
 
 IMPLEMENT_APP(MyApp)
 


@@ -37,12 +35,10 @@ MyApp::MyApp()
 
 bool MyApp::OnInit(void)
 {
 
 bool MyApp::OnInit(void)
 {

-#ifdef __WINDOWS__
-  wxBitmap::AddHandler(new wxPNGFileHandler);
-#endif
+  wxImage::AddHandler(new wxPNGHandler);

 
   // Create the main frame window
 
   // Create the main frame window

-  frame = new MyFrame(NULL, "wxPNGBitmap Demo", wxPoint(0, 0), wxSize(300, 300));
+  frame = new MyFrame((wxFrame *) NULL, "wxPNGBitmap Demo", wxPoint(0, 0), wxSize(300, 300));

 
   // Give it a status line
   frame->CreateStatusBar(2);
 
   // Give it a status line
   frame->CreateStatusBar(2);


@@ -52,6 +48,7 @@ bool MyApp::OnInit(void)
   wxMenu *help_menu = new wxMenu;
 
   file_menu->Append(PNGDEMO_LOAD_FILE, "&Load file",                "Load file");
   wxMenu *help_menu = new wxMenu;
 
   file_menu->Append(PNGDEMO_LOAD_FILE, "&Load file",                "Load file");

+  file_menu->Append(PNGDEMO_SAVE_FILE, "&Save file",                "Save file");

   file_menu->Append(PNGDEMO_QUIT, "E&xit",                "Quit program");
   help_menu->Append(PNGDEMO_ABOUT, "&About",              "About PNG demo");
 
   file_menu->Append(PNGDEMO_QUIT, "E&xit",                "Quit program");
   help_menu->Append(PNGDEMO_ABOUT, "&About",              "About PNG demo");
 


@@ -80,33 +77,63 @@ BEGIN_EVENT_TABLE(MyFrame, wxFrame)
     EVT_MENU(PNGDEMO_QUIT,      MyFrame::OnQuit)
     EVT_MENU(PNGDEMO_ABOUT,     MyFrame::OnAbout)
     EVT_MENU(PNGDEMO_LOAD_FILE, MyFrame::OnLoadFile)
     EVT_MENU(PNGDEMO_QUIT,      MyFrame::OnQuit)
     EVT_MENU(PNGDEMO_ABOUT,     MyFrame::OnAbout)
     EVT_MENU(PNGDEMO_LOAD_FILE, MyFrame::OnLoadFile)

+    EVT_MENU(PNGDEMO_SAVE_FILE, MyFrame::OnSaveFile)

 END_EVENT_TABLE()
 
 // Define my frame constructor
 MyFrame::MyFrame(wxFrame *frame, const wxString& title, const wxPoint& pos, const wxSize& size):
   wxFrame(frame, -1, title, pos, size)
 {
 END_EVENT_TABLE()
 
 // Define my frame constructor
 MyFrame::MyFrame(wxFrame *frame, const wxString& title, const wxPoint& pos, const wxSize& size):
   wxFrame(frame, -1, title, pos, size)
 {

-  canvas = NULL;
+  canvas = (MyCanvas *) NULL;

 }
 
 }
 

-void MyFrame::OnQuit(wxCommandEvent& event)
+void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))

 {
     Close(TRUE);
 }
 
 {
     Close(TRUE);
 }
 

-void MyFrame::OnAbout(wxCommandEvent& event)
+void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))

 {
     (void)wxMessageBox("PNG demo\nJulian Smart (c) 1998",
             "About PNG Demo", wxOK);
 }
 
 {
     (void)wxMessageBox("PNG demo\nJulian Smart (c) 1998",
             "About PNG Demo", wxOK);
 }
 

-void MyFrame::OnLoadFile(wxCommandEvent& event)
+void MyFrame::OnSaveFile(wxCommandEvent& WXUNUSED(event))
+{
+  wxString f = wxFileSelector( wxT("Save Image"), (const wxChar *)NULL,
+                               (const wxChar *)NULL,
+                               wxT("png"), wxT("PNG files (*.png)|*.png") );
+
+  if (f == "")  return;
+  
+  wxBitmap *backstore = new wxBitmap( 150, 150 );
+  
+  wxMemoryDC memDC;
+  memDC.SelectObject( *backstore );
+  memDC.Clear();
+  memDC.SetBrush( *wxBLACK_BRUSH );
+  memDC.SetPen( *wxWHITE_PEN );
+  memDC.DrawRectangle( 0, 0, 150, 150 );
+  memDC.SetPen( *wxBLACK_PEN );
+  memDC.DrawLine( 0, 0, 0, 10 );
+  memDC.SetTextForeground( *wxWHITE );
+  memDC.DrawText( "This is a memory dc.", 10, 10 );
+  
+  memDC.SelectObject( wxNullBitmap );
+  
+  backstore->SaveFile( f, wxBITMAP_TYPE_PNG, (wxPalette*)NULL );
+  
+  delete backstore;
+}
+
+void MyFrame::OnLoadFile(wxCommandEvent& WXUNUSED(event))

 {
        // Show file selector.
 {
        // Show file selector.

-       char *f = wxFileSelector("Open Image", NULL, NULL,"png",
-                 "PNG files (*.png)|*.png");
+       wxString f = wxFileSelector(wxT("Open Image"), (const wxChar *) NULL,
+                                    (const wxChar *) NULL, wxT("png"),
+                                    wxT("PNG files (*.png)|*.png"));

 
 

-       if (!f)
+       if (f == "")

          return;
 
     if ( g_TestBitmap )
          return;
 
     if ( g_TestBitmap )


@@ -115,7 +142,7 @@ void MyFrame::OnLoadFile(wxCommandEvent& event)
     if (!g_TestBitmap->Ok())
     {
         delete g_TestBitmap;
     if (!g_TestBitmap->Ok())
     {
         delete g_TestBitmap;

-        g_TestBitmap = NULL;
+        g_TestBitmap = (wxBitmap *) NULL;

     }
 
     canvas->Refresh();
     }
 
     canvas->Refresh();


@@ -136,10 +163,10 @@ MyCanvas::~MyCanvas(void)
 }
 
 // Define the repainting behaviour
 }
 
 // Define the repainting behaviour

-void MyCanvas::OnPaint(wxPaintEvent& event)
+void MyCanvas::OnPaint(wxPaintEvent& WXUNUSED(event))

 {
   wxPaintDC dc(this);
 {
   wxPaintDC dc(this);

-  dc.SetPen(wxRED_PEN);
+  dc.SetPen(* wxRED_PEN);

 
   int i;
   for ( i = 0; i < 500; i += 10)
 
   int i;
   for ( i = 0; i < 500; i += 10)


@@ -149,38 +176,30 @@ void MyCanvas::OnPaint(wxPaintEvent& event)
   if ( g_TestBitmap && g_TestBitmap->Ok() )
   {
     wxMemoryDC memDC;
   if ( g_TestBitmap && g_TestBitmap->Ok() )
   {
     wxMemoryDC memDC;

-    if ( g_TestBitmap->GetColourMap() )
+    if ( g_TestBitmap->GetPalette() )

     {
     {

-        memDC.SetColourMap(g_TestBitmap->GetColourMap());
-        dc.SetColourMap(g_TestBitmap->GetColourMap());
+        memDC.SetPalette(* g_TestBitmap->GetPalette());
+        dc.SetPalette(* g_TestBitmap->GetPalette());

     }
     }

-    memDC.SelectObject(g_TestBitmap);
+    memDC.SelectObject(* g_TestBitmap);

 
     // Normal, non-transparent blitting
     dc.Blit(20, 20, g_TestBitmap->GetWidth(), g_TestBitmap->GetHeight(), & memDC, 0, 0, wxCOPY, FALSE);
 
 
     // Normal, non-transparent blitting
     dc.Blit(20, 20, g_TestBitmap->GetWidth(), g_TestBitmap->GetHeight(), & memDC, 0, 0, wxCOPY, FALSE);
 

-    memDC.SelectObject(NULL);
+    memDC.SelectObject(wxNullBitmap);

   }
 
   if ( g_TestBitmap && g_TestBitmap->Ok() )
   {
     wxMemoryDC memDC;
   }
 
   if ( g_TestBitmap && g_TestBitmap->Ok() )
   {
     wxMemoryDC memDC;

-    memDC.SelectObject(g_TestBitmap);
+    memDC.SelectObject(* g_TestBitmap);

 
     // Transparent blitting if there's a mask in the bitmap
     dc.Blit(20 + g_TestBitmap->GetWidth() + 20, 20, g_TestBitmap->GetWidth(), g_TestBitmap->GetHeight(), & memDC,
       0, 0, wxCOPY, TRUE);
 
 
     // Transparent blitting if there's a mask in the bitmap
     dc.Blit(20 + g_TestBitmap->GetWidth() + 20, 20, g_TestBitmap->GetWidth(), g_TestBitmap->GetHeight(), & memDC,
       0, 0, wxCOPY, TRUE);
 

-    memDC.SelectObject(NULL);
+    memDC.SelectObject(wxNullBitmap);

   }
 }
 
   }
 }
 

-// Define the behaviour for the frame closing
-// - must delete all frames except for the main one.
-bool MyFrame::OnClose(void)
-{
-  Show(FALSE);
-
-  return TRUE;
-}