wx_bgi_canvas.h

Go to the documentation of this file.

#pragma once
// wx_bgi_canvas.h — WxBgiCanvas: BGI drawing surface embedded in a wxWidgets panel.
// Include this header in your application AFTER the wxWidgets headers.
//
// WxBgiCanvas is compiled into the wx_bgi_wx static library (not the DLL),
// so it uses your application''s copy of wxWidgets — no DLL-boundary issues.
 
#include <wx/glcanvas.h>
#include "wx_bgi.h"
#include "wx_bgi_ext.h"
 
namespace wxbgi {
 
class WxBgiCanvas : public wxGLCanvas
{
public:
    explicit WxBgiCanvas(wxWindow* parent,
                         wxWindowID id    = wxID_ANY,
                         const wxPoint&  pos   = wxDefaultPosition,
                         const wxSize&   size  = wxDefaultSize,
                         long            style = 0,
                         const wxString& name  = wxASCII_STR("WxBgiCanvas"));
 
    ~WxBgiCanvas() override;
 
    void Render();
 
    void SetAutoRefreshHz(int hz);
 
protected:
    virtual void PreBlit(int w, int h) { (void)w; (void)h; }
 
    virtual void PostBlit(int pageW, int pageH, int vpW, int vpH)
    {
        (void)pageW; (void)pageH; (void)vpW; (void)vpH;
    }
 
private:
    wxGLContext* m_glContext{nullptr};   
    bool         m_ownsGLCtx{false};    
    bool         m_glewInited{false};
    bool         m_bgiInited{false};
    int          m_autoRefreshHz{0};
    wxLongLong_t m_lastRenderMs{0};
 
    void OnPaint(wxPaintEvent& evt);
    void OnSize(wxSizeEvent& evt);
    void OnIdle(wxIdleEvent& evt);
    void OnKeyDown(wxKeyEvent& evt);
    void OnKeyUp(wxKeyEvent& evt);
    void OnChar(wxKeyEvent& evt);
    void OnMouseMove(wxMouseEvent& evt);
    void OnMouseDown(wxMouseEvent& evt);
    void OnMouseUp(wxMouseEvent& evt);
    void OnMouseWheel(wxMouseEvent& evt);
 
    static int WxKeyToGlfw(int wxKey);
    void       RouteKeyEvent(wxKeyEvent& evt, int action);
};
 
} // namespace wxbgi