X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/600683ca0561c9d56e73f1faa3f21d8a6670936b..17b1d76b4add82305463d10b9f65668d06169363:/samples/rotate/rotate.cpp?ds=sidebyside diff --git a/samples/rotate/rotate.cpp b/samples/rotate/rotate.cpp index c7eacc7ef7..3b48a063ab 100644 --- a/samples/rotate/rotate.cpp +++ b/samples/rotate/rotate.cpp @@ -9,6 +9,14 @@ // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// +// ============================================================================ +// declarations +// ============================================================================ + +// ---------------------------------------------------------------------------- +// headers +// ---------------------------------------------------------------------------- + // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" @@ -21,41 +29,64 @@ #endif #include "wx/image.h" +#include "wx/numdlg.h" +#include "wx/dynarray.h" -/* GRG: This is not ANSI standard, define M_PI explicitly -#include // M_PI -*/ - -#ifndef M_PI -#define M_PI 3.1415926535897932384626433832795 -#endif - +// ---------------------------------------------------------------------------- +// application class +// ---------------------------------------------------------------------------- class MyApp: public wxApp { public: virtual bool OnInit(); - const wxImage& GetImage() const { return m_image; } private: wxImage m_image; }; +// ---------------------------------------------------------------------------- +// data class for images that need to be rendered +// ---------------------------------------------------------------------------- + +class MyRenderedImage +{ +public: + MyRenderedImage(const wxBitmap& bmp, int x, int y) + : m_bmp(bmp), m_x(x), m_y(y) { } + wxBitmap m_bmp; + int m_x, m_y; +}; + +// Declare a wxArray type to hold MyRenderedImages. +WX_DECLARE_OBJARRAY(MyRenderedImage, ArrayOfImages); + +// ---------------------------------------------------------------------------- +// custom canvas control that we can draw on +// ---------------------------------------------------------------------------- class MyCanvas: public wxScrolledWindow { public: MyCanvas(wxWindow* parent); + void ClearImages(); + void OnMouseLeftUp (wxMouseEvent & event); void OnMouseRightUp (wxMouseEvent & event); + void OnPaint (wxPaintEvent & event); private: + ArrayOfImages m_images; DECLARE_EVENT_TABLE() }; +// ---------------------------------------------------------------------------- +// main frame +// ---------------------------------------------------------------------------- + class MyFrame: public wxFrame { public: @@ -63,61 +94,155 @@ public: void OnQuit (wxCommandEvent &); void OnAngle(wxCommandEvent &); + void OnClear(wxCommandEvent &); double m_angle; DECLARE_EVENT_TABLE() + +private: + MyCanvas *m_canvas; }; +// ---------------------------------------------------------------------------- +// menu item identifiers +// ---------------------------------------------------------------------------- + enum { ID_Quit = 1, - ID_Angle + ID_Angle, + ID_Clear }; -BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow) - EVT_LEFT_UP (MyCanvas::OnMouseLeftUp) - EVT_RIGHT_UP (MyCanvas::OnMouseRightUp) -END_EVENT_TABLE() +// ============================================================================ +// implementation +// ============================================================================ -BEGIN_EVENT_TABLE(MyFrame, wxFrame) - EVT_MENU (ID_Quit, MyFrame::OnQuit) - EVT_MENU (ID_Angle, MyFrame::OnAngle) -END_EVENT_TABLE() +// ---------------------------------------------------------------------------- +// application class +// ---------------------------------------------------------------------------- IMPLEMENT_APP(MyApp) bool MyApp::OnInit() { - m_image = wxImage(_T("kclub.bmp"), wxBITMAP_TYPE_BMP); +#if wxUSE_LIBPNG + wxImage::AddHandler( new wxPNGHandler ); +#endif - // any unused colour will do - m_image.SetMaskColour( 0, 255, 255 ); + m_image = wxImage(_T("duck.png"), wxBITMAP_TYPE_PNG); if ( !m_image.Ok() ) { wxLogError(wxT("Can't load the test image, please copy it to the ") wxT("program directory")); - return FALSE; + return false; } - MyFrame *frame = new MyFrame (_T("wxWindows rotate sample"), - wxPoint(20,20), wxSize(600,450)); + MyFrame *frame = new MyFrame (_T("wxWidgets rotate sample"), + wxPoint(20, 20), wxSize(600, 450)); - frame->Show (TRUE); + frame->Show (true); SetTopWindow (frame); - return TRUE; + return true; +} + +// ---------------------------------------------------------------------------- +// data class for images that need to be rendered +// ---------------------------------------------------------------------------- + +#include "wx/arrimpl.cpp" +WX_DEFINE_OBJARRAY(ArrayOfImages) + +// ---------------------------------------------------------------------------- +// custom canvas control that we can draw on +// ---------------------------------------------------------------------------- + +BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow) + EVT_LEFT_UP (MyCanvas::OnMouseLeftUp) + EVT_RIGHT_UP (MyCanvas::OnMouseRightUp) + EVT_PAINT (MyCanvas::OnPaint) +END_EVENT_TABLE() + +MyCanvas::MyCanvas(wxWindow* parent): + wxScrolledWindow(parent, wxID_ANY) +{ + SetBackgroundColour (wxColour (0,80,60)); + ClearBackground(); +} + +void MyCanvas::ClearImages () +{ + m_images.Clear(); + Refresh(true); +} + +// Rotate with interpolation and with offset correction +void MyCanvas::OnMouseLeftUp (wxMouseEvent & event) +{ + MyFrame* frame = (MyFrame*) GetParent(); + + wxPoint offset; + const wxImage& img = wxGetApp().GetImage(); + wxImage img2 = img.Rotate(frame->m_angle, + wxPoint(img.GetWidth() / 2, img.GetHeight() / 2), true, &offset); + + // Add the images to an array to be drawn later in OnPaint() + m_images.Add(new MyRenderedImage(wxBitmap(img2), + event.m_x + offset.x, event.m_y + offset.y)); + Refresh(false); +} + +// without interpolation, and without offset correction +void MyCanvas::OnMouseRightUp (wxMouseEvent & event) +{ + MyFrame* frame = (MyFrame*) GetParent(); + + const wxImage& img = wxGetApp().GetImage(); + wxImage img2 = img.Rotate(frame->m_angle, + wxPoint(img.GetWidth() / 2, img.GetHeight() / 2), false); + + // Add the images to an array to be drawn later in OnPaint() + m_images.Add(new MyRenderedImage(wxBitmap(img2), event.m_x, event.m_y)); + Refresh(false); +} + +void MyCanvas::OnPaint (wxPaintEvent &) +{ + size_t numImages = m_images.GetCount(); + + wxPaintDC dc(this); + + dc.SetTextForeground(wxColour(255, 255, 255)); + dc.DrawText(wxT("Click on the canvas to draw a duck."), 10, 10); + + for (size_t i = 0; i < numImages; i++) { + MyRenderedImage & image = m_images.Item(i); + dc.DrawBitmap(image.m_bmp, image.m_x, image.m_y, true); + } } +// ---------------------------------------------------------------------------- +// main frame +// ---------------------------------------------------------------------------- + +BEGIN_EVENT_TABLE(MyFrame, wxFrame) + EVT_MENU (ID_Quit, MyFrame::OnQuit) + EVT_MENU (ID_Angle, MyFrame::OnAngle) + EVT_MENU (ID_Clear, MyFrame::OnClear) +END_EVENT_TABLE() + MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size) - : wxFrame((wxFrame *)NULL, -1, title, pos, size) + : wxFrame((wxFrame *)NULL, wxID_ANY, title, pos, size) { m_angle = 0.1; - new MyCanvas(this); + m_canvas = new MyCanvas(this); wxMenu *menuFile = new wxMenu; - menuFile->Append (ID_Angle, _T("Set &angle\tCtrl-A")); + menuFile->Append (ID_Angle, _T("Set &angle...\tCtrl-A")); + menuFile->Append (ID_Clear, _T("&Clear all ducks\tCtrl-C")); menuFile->AppendSeparator(); menuFile->Append (ID_Quit, _T("E&xit\tAlt-X")); @@ -132,7 +257,7 @@ void MyFrame::OnAngle (wxCommandEvent &) long degrees = (long)((180*m_angle)/M_PI); degrees = wxGetNumberFromUser(_T("Change the image rotation angle"), _T("Angle in degrees:"), - _T("wxWindows rotate sample"), + _T("wxWidgets rotate sample"), degrees, -180, +180, this); @@ -142,41 +267,11 @@ void MyFrame::OnAngle (wxCommandEvent &) void MyFrame::OnQuit (wxCommandEvent &) { - Close (TRUE); -} - -MyCanvas::MyCanvas(wxWindow* parent): - wxScrolledWindow(parent, -1) -{ - SetBackgroundColour (wxColour (0,80,60)); - Clear(); + Close (true); } -// Rotate with interpolation and with offset correction -void MyCanvas::OnMouseLeftUp (wxMouseEvent & event) +void MyFrame::OnClear (wxCommandEvent &) { - MyFrame* frame = (MyFrame*) GetParent(); - - wxPoint offset; - const wxImage& img = wxGetApp().GetImage(); - wxImage img2 = img.Rotate(frame->m_angle, wxPoint(img.GetWidth()/2, img.GetHeight()/2), TRUE, &offset); - - wxBitmap bmp(img2); - - wxClientDC dc (this); - dc.DrawBitmap (bmp, event.m_x + offset.x, event.m_y + offset.y, TRUE); + m_canvas->ClearImages (); } -// without interpolation, and without offset correction -void MyCanvas::OnMouseRightUp (wxMouseEvent & event) -{ - MyFrame* frame = (MyFrame*) GetParent(); - - const wxImage& img = wxGetApp().GetImage(); - wxImage img2 = img.Rotate(frame->m_angle, wxPoint(img.GetWidth()/2, img.GetHeight()/2), FALSE); - - wxBitmap bmp(img2); - - wxClientDC dc (this); - dc.DrawBitmap (bmp, event.m_x, event.m_y, TRUE); -}