Warning, /include/Geant4/toolx/X11/session is written in an unsupported language. File is not indexed.
0001 // Copyright (C) 2010, Guy Barrand. All rights reserved.
0002 // See the file tools.license for terms.
0003
0004 #ifndef toolx_X11_session
0005 #define toolx_X11_session
0006
0007 #include "base_session"
0008
0009 #include <GL/glx.h>
0010
0011 namespace toolx {
0012 namespace X11 {
0013
0014 class session : public base_session {
0015 typedef base_session parent;
0016 public:
0017 session(std::ostream& a_out,unsigned int a_monitor = 0)
0018 :parent(a_out,a_monitor)
0019 ,m_vinfo(0)
0020 ,m_ctx(0)
0021 ,m_colormap(0)
0022 {
0023 if(!m_display) return;
0024
0025 {int glxMajor, glxMinor;
0026 ::glXQueryVersion(m_display,&glxMajor,&glxMinor);
0027 if(glxMajor<=0) {
0028 m_out << "toolx::X11::session::session : bad GLX-Version " << glxMajor << "." << glxMinor << std::endl;
0029 ::XCloseDisplay(m_display);
0030 m_display = 0;
0031 m_vinfo = 0;
0032 m_ctx = 0;
0033 return;
0034 }}
0035
0036 static const int atbs_alpha[] = {
0037 GLX_RGBA,
0038 GLX_RED_SIZE, 1,
0039 GLX_GREEN_SIZE, 1,
0040 GLX_BLUE_SIZE, 1,
0041 GLX_ALPHA_SIZE, 1,
0042 GLX_DEPTH_SIZE, 1,
0043 GLX_DOUBLEBUFFER,
0044 None};
0045
0046 //NOTE : macOS : glXChooseVisual leaks 640 bytes.
0047 m_vinfo = ::glXChooseVisual(m_display,m_monitor,(int*)atbs_alpha);
0048 if(!m_vinfo) {
0049 static const int atbs[] = {
0050 GLX_RGBA,
0051 GLX_RED_SIZE, 1,
0052 GLX_GREEN_SIZE, 1,
0053 GLX_BLUE_SIZE, 1,
0054 GLX_DEPTH_SIZE, 1,
0055 GLX_DOUBLEBUFFER,
0056 None};
0057
0058 m_vinfo = ::glXChooseVisual(m_display,m_monitor,(int*)atbs);
0059 if(!m_vinfo) {
0060 m_out << "toolx::X11::session::session :"
0061 << " can't choose a visual on screen " << m_monitor << "."
0062 << std::endl;
0063 ::XCloseDisplay(m_display);
0064 m_display = 0;
0065 m_vinfo = 0;
0066 m_ctx = 0;
0067 return;
0068 }
0069 }
0070
0071 m_ctx = ::glXCreateContext(m_display,m_vinfo,NULL,GL_TRUE);
0072 if(!m_ctx) {
0073 m_out << "toolx::X11::session::session :"
0074 << " can't create a glX context with direct rendering."
0075 << std::endl;
0076 m_ctx = ::glXCreateContext(m_display,m_vinfo,NULL,GL_FALSE);
0077 if(!m_ctx) {
0078 m_out << "toolx::X11::session::session :"
0079 << " can't create a glX context."
0080 << std::endl;
0081 ::XCloseDisplay(m_display);
0082 m_display = 0;
0083 m_vinfo = 0;
0084 m_ctx = 0;
0085 return;
0086 }
0087 }
0088
0089 // It is better to create a colormap adapted to the visual.
0090 m_colormap = ::XCreateColormap(m_display,::XRootWindow(m_display,m_monitor),m_vinfo->visual,AllocNone);
0091 if(m_colormap==0L) {
0092 m_out << "toolx::X11::session::session : XCreateColormap failed." << std::endl;
0093 ::XCloseDisplay(m_display);
0094 m_display = 0;
0095 m_vinfo = 0;
0096 m_ctx = 0;
0097 return;
0098 }
0099 }
0100 virtual ~session() {
0101 if(m_display) {
0102 if(m_ctx) {
0103 ::glXDestroyContext(m_display,m_ctx);
0104 m_ctx = 0;
0105 }
0106 if(m_colormap) {
0107 ::XFreeColormap(m_display,m_colormap);
0108 m_colormap = 0;
0109 }
0110 ::XCloseDisplay(m_display);
0111 m_display = 0;
0112 }
0113 if(m_vinfo) {
0114 ::XFree(m_vinfo);
0115 m_vinfo = 0;
0116 }
0117 }
0118 protected:
0119 session(const session& a_from)
0120 :parent(a_from)
0121 ,m_vinfo(0)
0122 ,m_ctx(0)
0123 ,m_colormap(0)
0124 {}
0125 session& operator=(const session& a_from){
0126 if(&a_from==this) return *this;
0127 parent::operator=(a_from);
0128 return *this;
0129 }
0130 public:
0131 GLXContext context() const {return m_ctx;}
0132
0133 Window create_window(const char* a_title,int a_x,int a_y,unsigned int a_width,unsigned int a_height) {
0134 if(!m_display) return 0L;
0135
0136 XSetWindowAttributes swa;
0137 swa.event_mask = StructureNotifyMask | ExposureMask
0138 | ButtonPressMask | ButtonReleaseMask | ButtonMotionMask
0139 | PointerMotionMask
0140 | KeyPressMask;
0141
0142 swa.colormap = m_colormap;
0143 swa.border_pixel = 0L;
0144
0145 Window window = ::XCreateWindow(m_display,
0146 ::XRootWindow(m_display,m_monitor),
0147 a_x,a_y,a_width,a_height,
0148 0,
0149 m_vinfo->depth,
0150 InputOutput,
0151 m_vinfo->visual,
0152 CWBorderPixel|CWColormap|CWEventMask,&swa);
0153
0154 if(window==0L) {
0155 m_out << "toolx::X11::session::create_window :"
0156 << " can't create a X11 window."
0157 << std::endl;
0158 return 0L;
0159 }
0160
0161 XTextProperty tp;
0162 ::XStringListToTextProperty((char**)&a_title,1,&tp);
0163 XSizeHints sh;
0164 sh.flags = USPosition | USSize;
0165 ::XSetWMProperties(m_display,window,&tp,&tp,0,0,&sh,0,0);
0166 ::XFree(tp.value);
0167
0168 ::XSetWMProtocols(m_display,window,&m_WM_DELETE_WINDOW_atom,1);
0169 return window;
0170 }
0171 protected:
0172 XVisualInfo* m_vinfo;
0173 GLXContext m_ctx;
0174 Colormap m_colormap;
0175 };
0176
0177 }}
0178
0179 #endif
0180
