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added test for wxDC-based image scaling; updated copyright

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@60033 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
2009-04-05 14:53:17 +00:00
parent 437950ced1
commit a2bbedf07d
1 changed files with 45 additions and 16 deletions
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61
samples/image/image.cpp
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@@ -6,6 +6,7 @@
// Created: 1998
// RCS-ID: $Id$
// Copyright: (c) 1998-2005 Robert Roebling
// (c) 2005-2009 Vadim Zeitlin
// License: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
@@ -127,6 +128,7 @@ public:
Create(parent, desc, bitmap);
}
private:
bool Create(wxFrame *parent,
const wxString& desc,
const wxBitmap& bitmap,
@@ -139,6 +141,7 @@ public:
return false;
m_bitmap = bitmap;
m_zoom = 1.;
wxMenu *menu = new wxMenu;
menu->Append(wxID_SAVE);
@@ -147,6 +150,9 @@ public:
"Uncheck this for transparent images");
menu->AppendSeparator();
menu->Append(ID_RESIZE, _T("&Fit to window\tCtrl-F"));
menu->Append(wxID_ZOOM_IN, "Zoom &in\tCtrl-+");
menu->Append(wxID_ZOOM_OUT, "Zoom &out\tCtrl--");
menu->Append(wxID_ZOOM_100, "Reset zoom to &100%\tCtrl-1");
menu->AppendSeparator();
menu->Append(ID_ROTATE_LEFT, _T("Rotate &left\tCtrl-L"));
menu->Append(ID_ROTATE_RIGHT, _T("Rotate &right\tCtrl-R"));
@@ -182,11 +188,16 @@ public:
if ( GetMenuBar()->IsChecked(ID_PAINT_BG) )
ClearBackground();
dc.SetUserScale(m_zoom, m_zoom);
const wxSize size = GetClientSize();
dc.DrawBitmap(m_bitmap,
(size.x - m_bitmap.GetWidth())/2,
(size.y - m_bitmap.GetHeight())/2,
true /* use mask */);
dc.DrawBitmap
(
m_bitmap,
dc.DeviceToLogicalX((size.x - m_zoom*m_bitmap.GetWidth())/2),
dc.DeviceToLogicalY((size.y - m_zoom*m_bitmap.GetHeight())/2),
true /* use mask */
);
}
void OnSave(wxCommandEvent& WXUNUSED(event))
@@ -361,7 +372,18 @@ public:
m_bitmap = wxBitmap(img);
UpdateStatusBar();
Refresh();
}
void OnZoom(wxCommandEvent& event)
{
if ( event.GetId() == wxID_ZOOM_IN )
m_zoom *= 1.2;
else if ( event.GetId() == wxID_ZOOM_OUT )
m_zoom /= 1.2;
else // wxID_ZOOM_100
m_zoom = 1.;
UpdateStatusBar();
}
void OnRotate(wxCommandEvent& event)
@@ -381,18 +403,19 @@ public:
m_bitmap = wxBitmap(img);
UpdateStatusBar();
}
void UpdateStatusBar()
{
wxLogStatus(this, _T("Image size: (%d, %d), zoom %.2f"),
m_bitmap.GetWidth(),
m_bitmap.GetHeight(),
m_zoom);
Refresh();
}
private:
void UpdateStatusBar()
{
wxLogStatus(this, _T("Image size: (%d, %d)"),
m_bitmap.GetWidth(),
m_bitmap.GetHeight());
}
wxBitmap m_bitmap;
double m_zoom;
DECLARE_EVENT_TABLE()
};
@@ -552,6 +575,10 @@ BEGIN_EVENT_TABLE(MyImageFrame, wxFrame)
EVT_MENU(wxID_SAVE, MyImageFrame::OnSave)
EVT_MENU_RANGE(ID_ROTATE_LEFT, ID_ROTATE_RIGHT, MyImageFrame::OnRotate)
EVT_MENU(ID_RESIZE, MyImageFrame::OnResize)
EVT_MENU(wxID_ZOOM_IN, MyImageFrame::OnZoom)
EVT_MENU(wxID_ZOOM_OUT, MyImageFrame::OnZoom)
EVT_MENU(wxID_ZOOM_100, MyImageFrame::OnZoom)
END_EVENT_TABLE()
//-----------------------------------------------------------------------------
@@ -648,9 +675,11 @@ void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) )
void MyFrame::OnAbout( wxCommandEvent &WXUNUSED(event) )
{
(void)wxMessageBox( _T("wxImage demo\n")
_T("Robert Roebling (c) 1998,2000"),
_T("About wxImage Demo"), wxICON_INFORMATION | wxOK );
(void)wxMessageBox( "wxImage demo\n"
"(c) Robert Roebling 1998-2005"
"(c) Vadim Zeitlin 2005-2009",
"About wxImage Demo",
wxICON_INFORMATION | wxOK );
}
wxString MyFrame::LoadUserImage(wxImage& image)