4 #include <X11/extensions/Xrandr.h>
6 #include <msp/io/print.h>
7 #include <msp/strings/format.h>
8 #include <msp/strings/lexicalcast.h>
10 #include "display_private.h"
16 bool error_flag = false;
17 std::string error_msg;
19 int x_error_handler(Display *display, XErrorEvent *event)
22 XGetErrorText(display, event->error_code, err, sizeof(err));
24 string request_code = Msp::lexical_cast<string, int>(event->request_code);
26 XGetErrorDatabaseText(display, "XRequest", request_code.c_str(), request_code.c_str(), req, sizeof(req));
28 string msg = Msp::format("Request %s failed with %s [%08X]", req, err, event->resourceid);
30 Msp::IO::print(Msp::IO::cerr, "Discarding error: %s\n", msg);
33 Msp::IO::print(Msp::IO::cerr, "%s\n", msg);
42 inline Msp::Graphics::VideoRotation rotation_from_sys(Rotation r)
46 case RR_Rotate_90: return Msp::Graphics::ROTATE_RIGHT;
47 case RR_Rotate_180: return Msp::Graphics::ROTATE_INVERTED;
48 case RR_Rotate_270: return Msp::Graphics::ROTATE_LEFT;
49 default: return Msp::Graphics::ROTATE_NORMAL;
53 inline Rotation rotation_to_sys(Msp::Graphics::VideoRotation r)
57 case Msp::Graphics::ROTATE_RIGHT: return RR_Rotate_90;
58 case Msp::Graphics::ROTATE_INVERTED: return RR_Rotate_180;
59 case Msp::Graphics::ROTATE_LEFT: return RR_Rotate_270;
60 default: return RR_Rotate_0;
64 inline bool monitor_x_compare(const Msp::Graphics::Monitor &m1, const Msp::Graphics::Monitor &m2)
66 if(m1.desktop_mode && !m2.desktop_mode)
72 inline unsigned mode_width(const Msp::Graphics::VideoMode &m, Msp::Graphics::VideoRotation r)
74 if(r==Msp::Graphics::ROTATE_RIGHT || r==Msp::Graphics::ROTATE_LEFT)
86 Display::Display(const string &disp_name):
92 priv->display = XOpenDisplay(0);
94 priv->display = XOpenDisplay(disp_name.c_str());
96 throw runtime_error("XOpenDisplay");
98 XSetErrorHandler(x_error_handler);
100 priv->root_window = DefaultRootWindow(priv->display);
102 err_dialog = new ErrorDialog(this);
107 if(XRRQueryExtension(priv->display, &event_base, &error_base))
110 XRRQueryVersion(priv->display, &major, &minor);
111 if(major>1 || (major==1 && minor>=2))
113 XRRScreenResources *res = XRRGetScreenResources(priv->display, priv->root_window);
114 RROutput primary = XRRGetOutputPrimary(priv->display, priv->root_window);
115 Atom edid_prop = XInternAtom(priv->display, RR_PROPERTY_RANDR_EDID, true);
117 map<RRMode, XRRModeInfo *> modes_by_id;
118 for(int i=0; i<res->nmode; ++i)
119 modes_by_id[res->modes[i].id] = &res->modes[i];
121 for(int i=0; i<res->noutput; ++i)
123 XRROutputInfo *output = XRRGetOutputInfo(priv->display, res, res->outputs[i]);
124 XRRCrtcInfo *crtc = (output->crtc ? XRRGetCrtcInfo(priv->display, res, output->crtc) : 0);
126 monitors.push_back(Monitor());
127 Monitor &monitor = monitors.back();
128 monitor.index = monitors.size()-1;
129 monitor.name.assign(output->name, output->nameLen);
130 priv->monitors.push_back(res->outputs[i]);
136 unsigned long length;
137 unsigned long overflow;
138 unsigned char *edid = 0;
139 XRRGetOutputProperty(priv->display, res->outputs[i], edid_prop, 0, 32, false, false, XA_INTEGER, &prop_type, &prop_format, &length, &overflow, &edid);
140 if(prop_type==XA_INTEGER && prop_format==8)
142 for(unsigned j=0; j<4; ++j)
144 unsigned offset = 54+j*18;
145 if(edid[offset]==0 && edid[offset+1]==0 && edid[offset+3]==0xFC)
148 for(k=0; (k<13 && edid[offset+5+k]!=0x0A); ++k) ;
149 monitor.name.assign(reinterpret_cast<char *>(edid+offset+5), k);
158 monitor.desktop_rotation = rotation_from_sys(crtc->rotation);
159 monitor.current_rotation = monitor.desktop_rotation;
164 if(res->outputs[i]==primary)
165 primary_monitor = &monitor;
167 for(int j=0; j<output->nmode; ++j)
169 map<RRMode, XRRModeInfo *>::iterator k = modes_by_id.find(output->modes[j]);
170 if(k==modes_by_id.end())
173 XRRModeInfo *info = k->second;
175 VideoMode mode(info->width, info->height);
176 mode.index = modes.size();
177 mode.monitor = &monitor;
178 mode.rate = static_cast<float>(info->dotClock)/(info->hTotal*info->vTotal);
179 if(find_mode(mode, 0.01f))
182 modes.push_back(mode);
183 priv->modes.push_back(info->id);
184 monitor.video_modes.push_back(&modes.back());
186 if(crtc && info->id==crtc->mode)
188 monitor.desktop_mode = &modes.back();
189 monitor.current_mode = monitor.desktop_mode;
193 XRRFreeOutputInfo(output);
195 XRRFreeCrtcInfo(crtc);
198 XRRFreeScreenResources(res);
200 monitors.sort(monitor_x_compare);
201 Monitor *prev_enabled = 0;
202 for(list<Monitor>::iterator i=monitors.begin(); i!=monitors.end(); ++i)
205 i->next_left = prev_enabled;
207 prev_enabled->next_right = &*i;
211 if(!primary_monitor || !primary_monitor->desktop_mode)
213 // XRandR didn't give a sensible primary monitor. Try to guess one.
214 unsigned largest = 0;
215 for(list<Monitor>::iterator i=monitors.begin(); i!=monitors.end(); ++i)
218 unsigned size = i->desktop_mode->width*i->desktop_mode->height;
222 primary_monitor = &*i;
233 XCloseDisplay(priv->display);
238 void Display::set_mode(const VideoMode &requested_mode, bool exclusive)
241 const VideoMode *mode = find_mode(requested_mode);
243 throw unsupported_video_mode(requested_mode);
245 VideoRotation requested_rotation = requested_mode.rotation;
246 if(requested_rotation==ROTATE_ANY)
247 requested_rotation = mode->monitor->desktop_rotation;
249 XRRScreenResources *res = XRRGetScreenResources(priv->display, priv->root_window);
250 RROutput output = priv->monitors[mode->monitor->index];
251 XRROutputInfo *output_info = XRRGetOutputInfo(priv->display, res, output);
253 // Check if the output already has a CRTC and find a free one if it doesn't
254 RRCrtc crtc = output_info->crtc;
255 XRRCrtcInfo *crtc_info = 0;
257 crtc_info = XRRGetCrtcInfo(priv->display, res, crtc);
260 for(int i=0; i<res->ncrtc; ++i)
262 crtc_info = XRRGetCrtcInfo(priv->display, res, res->crtcs[i]);
263 if(!crtc_info->noutput)
265 crtc = res->crtcs[i];
268 XRRFreeCrtcInfo(crtc_info);
273 XRRFreeOutputInfo(output_info);
274 throw unsupported_video_mode(requested_mode);
283 // Disable other outputs for exclusive mode
284 for(list<Monitor>::iterator i=monitors.begin(); i!=monitors.end(); ++i)
285 if(&*i!=mode->monitor)
287 XRROutputInfo *o = XRRGetOutputInfo(priv->display, res, priv->monitors[i->index]);
289 XRRSetCrtcConfig(priv->display, res, o->crtc, CurrentTime, 0, 0, 0, RR_Rotate_0, 0, 0);
290 XRRFreeOutputInfo(o);
293 i->current_rotation = ROTATE_NORMAL;
300 const Monitor *left = mode->monitor->next_left;
301 while(left && !left->current_mode)
302 left = left->next_left;
306 x = left->x+mode_width(*left->current_mode, left->current_rotation);
311 XRRSetCrtcConfig(priv->display, res, crtc, CurrentTime, x, y, priv->modes[mode->index], rotation_to_sys(requested_rotation), &output, 1);
313 list<Monitor>::iterator i;
314 for(i=monitors.begin(); i!=monitors.end(); ++i)
315 if(&*i==mode->monitor)
317 i->current_mode = mode;
318 i->current_rotation = requested_rotation;
322 x += mode_width(*mode, requested_rotation);
327 for(; i!=monitors.end(); ++i)
330 XRROutputInfo *o = XRRGetOutputInfo(priv->display, res, priv->monitors[i->index]);
331 XRRSetCrtcConfig(priv->display, res, o->crtc, CurrentTime, x, y, priv->modes[i->current_mode->index], rotation_to_sys(i->current_rotation), &priv->monitors[i->index], 1);
334 panning.timestamp = CurrentTime;
337 panning.width = i->current_mode->width;
338 panning.height = i->current_mode->height;
339 panning.track_left = panning.left;
340 panning.track_top = panning.top;
341 panning.track_width = panning.width;
342 panning.track_height = panning.height;
343 panning.border_left = 0;
344 panning.border_top = 0;
345 panning.border_right = 0;
346 panning.border_bottom = 0;
347 XRRSetPanning(priv->display, res, o->crtc, &panning);
349 XRRFreeOutputInfo(o);
354 x += mode_width(*i->current_mode, i->current_rotation);
357 XRRFreeOutputInfo(output_info);
358 XRRFreeCrtcInfo(crtc_info);
359 XRRFreeScreenResources(res);
361 (void)requested_mode;
363 throw runtime_error("no xrandr support");
367 bool Display::process_events()
369 int pending = XPending(priv->display);
376 XNextEvent(priv->display, &event.xevent);
380 map<WindowHandle, Window *>::iterator j = priv->windows.find(event.xevent.xany.window);
381 if(j!=priv->windows.end())
383 /* Filter keyboard autorepeat. If this packet is a KeyRelease and
384 the next one is a KeyPress with the exact same parameters, they
385 indicate autorepeat and must be dropped. */
386 if(event.xevent.type==KeyRelease && !j->second->get_keyboard_autorepeat() && pending>0)
388 XKeyEvent &kev = event.xevent.xkey;
390 XPeekEvent(priv->display, &ev2);
391 if(ev2.type==KeyPress)
393 XKeyEvent &kev2 = ev2.xkey;
394 if(kev2.window==kev.window && kev2.time==kev.time && kev2.keycode==kev.keycode)
396 XNextEvent(priv->display, &ev2);
403 j->second->event(event);
410 void Display::check_error()
415 throw runtime_error(error_msg);
420 } // namespace Graphics