JeVois  1.17
JeVois Smart Embedded Machine Vision Toolkit
Share this page:
ImGuiBackendSDL.H
Go to the documentation of this file.
1 // ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////
2 //
3 // JeVois Smart Embedded Machine Vision Toolkit - Copyright (C) 2020 by Laurent Itti, the University of Southern
4 // California (USC), and iLab at USC. See http://iLab.usc.edu and http://jevois.org for information about this project.
5 //
6 // This file is part of the JeVois Smart Embedded Machine Vision Toolkit. This program is free software; you can
7 // redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software
8 // Foundation, version 2. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
9 // without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
10 // License for more details. You should have received a copy of the GNU General Public License along with this program;
11 // if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
12 //
13 // Contact information: Laurent Itti - 3641 Watt Way, HNB-07A - Los Angeles, CA 90089-2520 - USA.
14 // Tel: +1 213 740 3527 - itti@pollux.usc.edu - http://iLab.usc.edu - http://jevois.org
15 // ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////
16 /*! \file */
17 
18 #pragma once
19 
20 #ifdef JEVOIS_HOST_PRO
22 #include <SDL.h>
23 
24 namespace jevois
25 {
26  //! BackendSDL for ImGui on JeVois-Pro
27  /*! This abstract base class provides an interface used by VideoDisplayGUI. Derived implementations are available for
28  SDL2 and Mali framebuffer + evdev. \ingroup core */
29  class ImGuiBackendSDL : public ImGuiBackend
30  {
31  public:
32  //! Constructor
33  ImGuiBackendSDL();
34 
35  //! Virtual destructor for safe inheritance, free resources
36  virtual ~ImGuiBackendSDL();
37 
38  //! Initialize the underlying engine that will process events, create windows, etc
39  /*! The init starts with the given initial window/framebuffer size. */
40  void init(unsigned short w, unsigned short h, bool fullscreen = false, float scale = 1.0f,
41  bool conslock = false) override;
42 
43  //! Poll events such as mouse movements, buttons, keyboard, joystick, and pass to ImGui
44  /*! Returns true if some events were received, which can be used to turn on mouse pointer and GUI. */
45  bool pollEvents(bool & shouldclose) override;
46 
47  //! Start a new frame and clear the window/framebuffer
48  void newFrame() override;
49 
50  //! Render the ImGui graphics
51  void render() override;
52 
53  // Returns current window size
54  /*! Returns 0,0 if display has not been initialized. */
55  void getWindowSize(unsigned short & w, unsigned short & h) const override;
56 
57  protected:
58  void init(unsigned short w, unsigned short h, bool fullscreen = false);
59  SDL_GLContext itsSDLctx;
60  SDL_Window * itsSDLwin;
61  };
62 
63 } // namespace jevois
64 
65 #endif // JEVOIS_HOST_PRO
ImGuiBackend.H
jevois
Definition: Concepts.dox:1
h
int h
Definition: GUIhelper.C:2157