X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/f5ac656c5a220c129347e059e1fc656b00ac55d4..f5766910b6731eb03e82371416e9778203396ce7:/samples/rotate/rotate.cpp diff --git a/samples/rotate/rotate.cpp b/samples/rotate/rotate.cpp index 3319489b51..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" @@ -21,20 +29,63 @@ #endif #include "wx/image.h" +#include "wx/numdlg.h" +#include "wx/dynarray.h" -#include // M_PI +// ---------------------------------------------------------------------------- +// 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 { @@ -43,63 +94,160 @@ public: void OnQuit (wxCommandEvent &); void OnAngle(wxCommandEvent &); - void OnMouseLeftUp (wxMouseEvent & event); - void OnMouseRightUp (wxMouseEvent & event); + void OnClear(wxCommandEvent &); -private: 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(MyFrame, wxFrame) - EVT_MENU (ID_Quit, MyFrame::OnQuit) - EVT_MENU (ID_Angle, MyFrame::OnAngle) - EVT_LEFT_UP (MyFrame::OnMouseLeftUp) - EVT_RIGHT_UP (MyFrame::OnMouseRightUp) -END_EVENT_TABLE() +// ============================================================================ +// implementation +// ============================================================================ -IMPLEMENT_APP(MyApp) +// ---------------------------------------------------------------------------- +// application class +// ---------------------------------------------------------------------------- +IMPLEMENT_APP(MyApp) bool MyApp::OnInit() { - m_image = wxImage("kclub.bmp", wxBITMAP_TYPE_BMP); +#if wxUSE_LIBPNG + wxImage::AddHandler( new wxPNGHandler ); +#endif + + m_image = wxImage(_T("duck.png"), wxBITMAP_TYPE_PNG); + if ( !m_image.Ok() ) { - wxLogError("Can't load the test image, please copy it to the " - "program directory"); - return FALSE; + wxLogError(wxT("Can't load the test image, please copy it to the ") + wxT("program directory")); + return false; } - MyFrame *frame = new MyFrame ("wxWindows rotate sample", - wxPoint(20,20), wxSize(600,450)); + MyFrame *frame = new MyFrame (_T("wxWidgets rotate sample"), + wxPoint(20, 20), wxSize(600, 450)); - frame->SetBackgroundColour (wxColour (0,80,60)); - - 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; + m_canvas = new MyCanvas(this); + wxMenu *menuFile = new wxMenu; - menuFile->Append (ID_Angle, "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, "E&xit\tAlt-X"); + menuFile->Append (ID_Quit, _T("E&xit\tAlt-X")); wxMenuBar *menuBar = new wxMenuBar; - menuBar->Append (menuFile, "&File"); + menuBar->Append (menuFile, _T("&File")); SetMenuBar (menuBar); } @@ -107,42 +255,23 @@ MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size) void MyFrame::OnAngle (wxCommandEvent &) { long degrees = (long)((180*m_angle)/M_PI); - degrees = wxGetNumberFromUser("Change the image rotation angle", - "Angle in degrees:", - "wxWindows rotate sample", + degrees = wxGetNumberFromUser(_T("Change the image rotation angle"), + _T("Angle in degrees:"), + _T("wxWidgets rotate sample"), degrees, -180, +180, this); - m_angle = (degrees * M_PI) / 180.0; + if ( degrees != -1 ) + m_angle = (degrees * M_PI) / 180.0; } void MyFrame::OnQuit (wxCommandEvent &) { - Close (TRUE); + Close (true); } - -// Rotate with interpolation and with offset correction -void MyFrame::OnMouseLeftUp (wxMouseEvent & event) +void MyFrame::OnClear (wxCommandEvent &) { - wxPoint offset; - const wxImage& img = wxGetApp().GetImage(); - wxImage img2 = img.Rotate(m_angle, wxPoint(img.GetWidth()/2, img.GetHeight()/2), TRUE, &offset); - - wxBitmap bmp = img2.ConvertToBitmap (); - - wxClientDC dc (this); - dc.DrawBitmap (img2.ConvertToBitmap(), event.m_x + offset.x, event.m_y + offset.y); + m_canvas->ClearImages (); } -// without interpolation, and without offset correction -void MyFrame::OnMouseRightUp (wxMouseEvent & event) -{ - const wxImage& img = wxGetApp().GetImage(); - wxImage img2 = img.Rotate(m_angle, wxPoint(img.GetWidth()/2, img.GetHeight()/2), FALSE); - - wxBitmap bmp = img2.ConvertToBitmap (); - - wxClientDC dc (this); - dc.DrawBitmap (bmp, event.m_x, event.m_y); -}