DisplayManagerX11.cpp 5.9 KB

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  1. #include "DisplayManagerX11.h"
  2. ///////////////////////////////////////////////////////////////////////////////////////////////////
  3. bool DisplayManagerX11::initialize()
  4. {
  5. m_displays.clear();
  6. if (!xdisplay)
  7. xdisplay = XOpenDisplay(NULL);
  8. if (!xdisplay)
  9. return false;
  10. int event_base, error_base;
  11. if (!XRRQueryExtension(xdisplay, &event_base, &error_base))
  12. return false;
  13. if (resources)
  14. XRRFreeScreenResources(resources);
  15. resources = XRRGetScreenResources(xdisplay, RootWindow(xdisplay, DefaultScreen(xdisplay)));
  16. if (!resources)
  17. return false;
  18. for (int o = 0; o < resources->noutput; o++) {
  19. RROutput output = resources->outputs[o];
  20. XRRCrtcInfo *crtc = NULL;
  21. XRROutputInfo *out = XRRGetOutputInfo(xdisplay, resources, output);
  22. if (!out || !out->crtc)
  23. goto next;
  24. crtc = XRRGetCrtcInfo(xdisplay, resources, out->crtc);
  25. if (!crtc)
  26. goto next;
  27. {
  28. DMDisplayPtr display = DMDisplayPtr(new DMDisplay());
  29. display->m_id = m_displays.size();
  30. display->m_name = out->name;
  31. display->m_privId = o;
  32. m_displays[display->m_id] = display;
  33. for (int om = 0; om < out->nmode; om++) {
  34. RRMode xm = out->modes[om];
  35. for (int n = 0; n < resources->nmode; n++) {
  36. XRRModeInfo m = resources->modes[n];
  37. if (m.id != xm)
  38. continue;
  39. DMVideoModePtr mode = DMVideoModePtr(new DMVideoMode());
  40. mode->m_privId = n;
  41. mode->m_id = display->m_videoModes.size();
  42. display->m_videoModes[mode->m_id] = mode;
  43. mode->m_interlaced = m.modeFlags & RR_Interlace;
  44. double vTotal = m.vTotal;
  45. if (m.modeFlags & RR_DoubleScan)
  46. vTotal *= 2;
  47. if (m.modeFlags & RR_Interlace)
  48. vTotal /= 2;
  49. mode->m_refreshRate = m.dotClock / (m.hTotal * vTotal);
  50. mode->m_width = m.width;
  51. mode->m_height = m.height;
  52. mode->m_bitsPerPixel = 0; // we can't know; depth is not managed by xrandr
  53. }
  54. }
  55. }
  56. next:
  57. if (crtc)
  58. XRRFreeCrtcInfo(crtc);
  59. if (out)
  60. XRRFreeOutputInfo(out);
  61. }
  62. if (m_displays.empty())
  63. return false;
  64. else
  65. return DisplayManager::initialize();
  66. }
  67. ///////////////////////////////////////////////////////////////////////////////////////////////////
  68. bool DisplayManagerX11::setDisplayMode(int display, int mode)
  69. {
  70. if (!isValidDisplayMode(display, mode) || !resources)
  71. return false;
  72. DMDisplayPtr displayptr = m_displays[display];
  73. DMVideoModePtr videomode = displayptr->m_videoModes[mode];
  74. RROutput output = resources->outputs[displayptr->m_privId];
  75. RRMode xrmode = resources->modes[videomode->m_privId].id;
  76. bool success = false;
  77. XRRCrtcInfo *crtc = NULL;
  78. XRROutputInfo *out = XRRGetOutputInfo(xdisplay, resources, output);
  79. if (!out || !out->crtc)
  80. goto done;
  81. crtc = XRRGetCrtcInfo(xdisplay, resources, out->crtc);
  82. if (!crtc)
  83. goto done;
  84. // Keep all information, except the mode.
  85. success = XRRSetCrtcConfig(xdisplay, resources, out->crtc, crtc->timestamp,
  86. crtc->x, crtc->y, xrmode, crtc->rotation,
  87. crtc->outputs, crtc->noutput);
  88. // The return value isn't always accurate, apparently.
  89. success = true;
  90. done:
  91. if (crtc)
  92. XRRFreeCrtcInfo(crtc);
  93. if (out)
  94. XRRFreeOutputInfo(out);
  95. return success;
  96. }
  97. ///////////////////////////////////////////////////////////////////////////////////////////////////
  98. int DisplayManagerX11::getCurrentDisplayMode(int display)
  99. {
  100. if (!isValidDisplay(display) || !resources)
  101. return -1;
  102. DMDisplayPtr displayptr = m_displays[display];
  103. RROutput output = resources->outputs[displayptr->m_privId];
  104. int videomode_id = -1;
  105. XRRCrtcInfo *crtc = NULL;
  106. XRROutputInfo *out = XRRGetOutputInfo(xdisplay, resources, output);
  107. if (!out || !out->crtc)
  108. goto done;
  109. crtc = XRRGetCrtcInfo(xdisplay, resources, out->crtc);
  110. if (!crtc)
  111. goto done;
  112. for(DMVideoModePtr mode : displayptr->m_videoModes)
  113. {
  114. XRRModeInfo m = resources->modes[mode->m_privId];
  115. if (crtc->mode == m.id)
  116. {
  117. videomode_id = mode->m_id;
  118. break;
  119. }
  120. }
  121. done:
  122. if (crtc)
  123. XRRFreeCrtcInfo(crtc);
  124. if (out)
  125. XRRFreeOutputInfo(out);
  126. return videomode_id;
  127. };
  128. ///////////////////////////////////////////////////////////////////////////////////////////////////
  129. int DisplayManagerX11::getMainDisplay()
  130. {
  131. // This is probably not what DisplayManager means.
  132. RROutput main = XRRGetOutputPrimary(xdisplay, RootWindow(xdisplay, DefaultScreen(xdisplay)));
  133. if (!main || !resources)
  134. return -1;
  135. for (int o = 0; o < resources->noutput; o++)
  136. {
  137. if (main == resources->outputs[o])
  138. {
  139. for (int displayid = 0; displayid < m_displays.size(); displayid++)
  140. {
  141. if (m_displays[displayid]->m_privId == o)
  142. return displayid;
  143. }
  144. break;
  145. }
  146. }
  147. return -1;
  148. }
  149. ///////////////////////////////////////////////////////////////////////////////////////////////////
  150. int DisplayManagerX11::getDisplayFromPoint(int x, int y)
  151. {
  152. for (int displayid = 0; displayid < m_displays.size(); displayid++)
  153. {
  154. RROutput output = resources->outputs[m_displays[displayid]->m_privId];
  155. XRRCrtcInfo *crtc = NULL;
  156. XRROutputInfo *out = XRRGetOutputInfo(xdisplay, resources, output);
  157. bool matches = false;
  158. if (!out || !out->crtc)
  159. goto done;
  160. crtc = XRRGetCrtcInfo(xdisplay, resources, out->crtc);
  161. if (!crtc)
  162. goto done;
  163. matches = x >= crtc->x && y >= crtc->y &&
  164. x < crtc->x + (int)crtc->width &&
  165. y < crtc->y + (int)crtc->height;
  166. done:
  167. if (crtc)
  168. XRRFreeCrtcInfo(crtc);
  169. if (out)
  170. XRRFreeOutputInfo(out);
  171. if (matches)
  172. return displayid;
  173. }
  174. return -1;
  175. }
  176. ///////////////////////////////////////////////////////////////////////////////////////////////////
  177. DisplayManagerX11::~DisplayManagerX11()
  178. {
  179. if (resources)
  180. XRRFreeScreenResources(resources);
  181. if (xdisplay)
  182. XCloseDisplay(xdisplay);
  183. }