// Modified by:
// Created: 04/01/98
// RCS-ID: $Id$
-// Copyright: (c) Julian Smart and Markus Holzem
-// Licence: wxWindows license
+// Copyright: (c) Julian Smart
+// Licence: wxWindows license
/////////////////////////////////////////////////////////////////////////////
#ifdef __GNUG__
#pragma hdrstop
#endif
-#ifdef __WINDOWS__
-#include <wx/pnghand.h>
-#endif
+#include "wx/image.h"
#include "pngdemo.h"
-MyFrame *frame = NULL;
-wxBitmap *g_TestBitmap = NULL;
+MyFrame *frame = (MyFrame *) NULL;
+wxBitmap *g_TestBitmap = (wxBitmap *) NULL;
IMPLEMENT_APP(MyApp)
bool MyApp::OnInit(void)
{
-#ifdef __WINDOWS__
- wxBitmap::AddHandler(new wxPNGFileHandler);
-#endif
+ wxImage::AddHandler(new wxPNGHandler);
// Create the main frame window
- frame = new MyFrame(NULL, "wxPNGBitmap Demo", wxPoint(0, 0), wxSize(300, 300));
+ frame = new MyFrame((wxFrame *) NULL, _T("wxPNGBitmap Demo"), wxPoint(0, 0), wxSize(300, 300));
// Give it a status line
frame->CreateStatusBar(2);
wxMenu *file_menu = new wxMenu;
wxMenu *help_menu = new wxMenu;
- file_menu->Append(PNGDEMO_LOAD_FILE, "&Load file", "Load file");
- file_menu->Append(PNGDEMO_QUIT, "E&xit", "Quit program");
- help_menu->Append(PNGDEMO_ABOUT, "&About", "About PNG demo");
+ file_menu->Append(PNGDEMO_LOAD_FILE, _T("&Load file"), _T("Load file"));
+ file_menu->Append(PNGDEMO_SAVE_FILE, _T("&Save file"), _T("Save file"));
+ file_menu->Append(PNGDEMO_QUIT, _T("E&xit"), _T("Quit program"));
+ help_menu->Append(PNGDEMO_ABOUT, _T("&About"), _T("About PNG demo"));
wxMenuBar *menu_bar = new wxMenuBar;
- menu_bar->Append(file_menu, "&File");
- menu_bar->Append(help_menu, "&Help");
+ menu_bar->Append(file_menu, _T("&File"));
+ menu_bar->Append(help_menu, _T("&Help"));
// Associate the menu bar with the frame
frame->SetMenuBar(menu_bar);
frame->Show(TRUE);
- frame->SetStatusText("Hello, wxWindows");
+ frame->SetStatusText(_T("Hello, wxWindows"));
return TRUE;
}
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)
{
- canvas = NULL;
+ canvas = (MyCanvas *) NULL;
+}
+
+// frame destructor
+MyFrame::~MyFrame()
+{
+ if (g_TestBitmap)
+ {
+ delete g_TestBitmap;
+ g_TestBitmap = (wxBitmap *) NULL;
+ }
}
-void MyFrame::OnQuit(wxCommandEvent& event)
+void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
{
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(_T("PNG demo\nJulian Smart (c) 1998"),
+ _T("About PNG Demo"), wxOK);
}
-void MyFrame::OnLoadFile(wxCommandEvent& event)
+void MyFrame::OnSaveFile(wxCommandEvent& WXUNUSED(event))
{
- // Show file selector.
- char *f = wxFileSelector("Open Image", NULL, NULL,"png",
- "PNG files (*.png)|*.png");
+ wxString f = wxFileSelector( wxT("Save Image"), (const wxChar *)NULL,
+ (const wxChar *)NULL,
+ wxT("png"), wxT("PNG files (*.png)|*.png") );
+
+ if (f == _T("")) 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( _T("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.
+ wxString f = wxFileSelector(wxT("Open Image"), (const wxChar *) NULL,
+ (const wxChar *) NULL, wxT("png"),
+ wxT("PNG files (*.png)|*.png"));
- if (!f)
- return;
+ if (f == _T(""))
+ return;
if ( g_TestBitmap )
delete g_TestBitmap;
+
g_TestBitmap = new wxBitmap(f, wxBITMAP_TYPE_PNG);
if (!g_TestBitmap->Ok())
{
delete g_TestBitmap;
- g_TestBitmap = NULL;
+ g_TestBitmap = (wxBitmap *) NULL;
}
canvas->Refresh();
}
// Define the repainting behaviour
-void MyCanvas::OnPaint(wxPaintEvent& event)
+void MyCanvas::OnPaint(wxPaintEvent& WXUNUSED(event))
{
wxPaintDC dc(this);
- dc.SetPen(wxRED_PEN);
+ dc.SetPen(* wxRED_PEN);
int i;
for ( i = 0; i < 500; i += 10)
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);
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,
}
}
-// Define the behaviour for the frame closing
-// - must delete all frames except for the main one.
-bool MyFrame::OnClose(void)
-{
- Show(FALSE);
-
- return TRUE;
-}
projects / wxWidgets.git / blobdiff