| //======================================================================== |
| // GLFW - An OpenGL library |
| // Platform: X11 (Unix) |
| // API version: 3.0 |
| // WWW: http://www.glfw.org/ |
| //------------------------------------------------------------------------ |
| // Copyright (c) 2002-2006 Marcus Geelnard |
| // Copyright (c) 2006-2010 Camilla Berglund <elmindreda@elmindreda.org> |
| // |
| // This software is provided 'as-is', without any express or implied |
| // warranty. In no event will the authors be held liable for any damages |
| // arising from the use of this software. |
| // |
| // Permission is granted to anyone to use this software for any purpose, |
| // including commercial applications, and to alter it and redistribute it |
| // freely, subject to the following restrictions: |
| // |
| // 1. The origin of this software must not be misrepresented; you must not |
| // claim that you wrote the original software. If you use this software |
| // in a product, an acknowledgment in the product documentation would |
| // be appreciated but is not required. |
| // |
| // 2. Altered source versions must be plainly marked as such, and must not |
| // be misrepresented as being the original software. |
| // |
| // 3. This notice may not be removed or altered from any source |
| // distribution. |
| // |
| //======================================================================== |
| |
| #include "internal.h" |
| |
| #include <limits.h> |
| #include <stdlib.h> |
| #include <string.h> |
| |
| |
| ////////////////////////////////////////////////////////////////////////// |
| ////// GLFW internal API ////// |
| ////////////////////////////////////////////////////////////////////////// |
| |
| //======================================================================== |
| // Finds the video mode closest in size to the specified desired size |
| //======================================================================== |
| |
| int _glfwGetClosestVideoMode(int* width, int* height, int* rate) |
| { |
| int i, match, bestmatch; |
| |
| if (_glfwLibrary.X11.RandR.available) |
| { |
| #if defined(_GLFW_HAS_XRANDR) |
| int sizecount, bestsize; |
| int ratecount, bestrate; |
| short* ratelist; |
| XRRScreenConfiguration* sc; |
| XRRScreenSize* sizelist; |
| |
| sc = XRRGetScreenInfo(_glfwLibrary.X11.display, _glfwLibrary.X11.root); |
| |
| sizelist = XRRConfigSizes(sc, &sizecount); |
| |
| // Find the best matching mode |
| bestsize = -1; |
| bestmatch = INT_MAX; |
| for (i = 0; i < sizecount; i++) |
| { |
| match = (*width - sizelist[i].width) * |
| (*width - sizelist[i].width) + |
| (*height - sizelist[i].height) * |
| (*height - sizelist[i].height); |
| if (match < bestmatch) |
| { |
| bestmatch = match; |
| bestsize = i; |
| } |
| } |
| |
| if (bestsize != -1) |
| { |
| // Report width & height of best matching mode |
| *width = sizelist[bestsize].width; |
| *height = sizelist[bestsize].height; |
| |
| if (*rate > 0) |
| { |
| ratelist = XRRConfigRates(sc, bestsize, &ratecount); |
| |
| bestrate = -1; |
| bestmatch = INT_MAX; |
| for (i = 0; i < ratecount; i++) |
| { |
| match = abs(ratelist[i] - *rate); |
| if (match < bestmatch) |
| { |
| bestmatch = match; |
| bestrate = ratelist[i]; |
| } |
| } |
| |
| if (bestrate != -1) |
| *rate = bestrate; |
| } |
| } |
| |
| XRRFreeScreenConfigInfo(sc); |
| |
| if (bestsize != -1) |
| return bestsize; |
| #endif /*_GLFW_HAS_XRANDR*/ |
| } |
| |
| // Default: Simply use the screen resolution |
| *width = DisplayWidth(_glfwLibrary.X11.display, _glfwLibrary.X11.screen); |
| *height = DisplayHeight(_glfwLibrary.X11.display, _glfwLibrary.X11.screen); |
| |
| return 0; |
| } |
| |
| |
| //======================================================================== |
| // Change the current video mode |
| //======================================================================== |
| |
| void _glfwSetVideoModeMODE(int mode, int rate) |
| { |
| if (_glfwLibrary.X11.RandR.available) |
| { |
| #if defined(_GLFW_HAS_XRANDR) |
| XRRScreenConfiguration* sc; |
| Window root; |
| |
| root = _glfwLibrary.X11.root; |
| sc = XRRGetScreenInfo(_glfwLibrary.X11.display, root); |
| |
| // Remember old size and flag that we have changed the mode |
| if (!_glfwLibrary.X11.FS.modeChanged) |
| { |
| _glfwLibrary.X11.FS.oldSizeID = XRRConfigCurrentConfiguration(sc, &_glfwLibrary.X11.FS.oldRotation); |
| _glfwLibrary.X11.FS.oldWidth = DisplayWidth(_glfwLibrary.X11.display, |
| _glfwLibrary.X11.screen); |
| _glfwLibrary.X11.FS.oldHeight = DisplayHeight(_glfwLibrary.X11.display, |
| _glfwLibrary.X11.screen); |
| |
| _glfwLibrary.X11.FS.modeChanged = GL_TRUE; |
| } |
| |
| if (rate > 0) |
| { |
| // Set desired configuration |
| XRRSetScreenConfigAndRate(_glfwLibrary.X11.display, |
| sc, |
| root, |
| mode, |
| RR_Rotate_0, |
| (short) rate, |
| CurrentTime); |
| } |
| else |
| { |
| // Set desired configuration |
| XRRSetScreenConfig(_glfwLibrary.X11.display, |
| sc, |
| root, |
| mode, |
| RR_Rotate_0, |
| CurrentTime); |
| } |
| |
| XRRFreeScreenConfigInfo(sc); |
| #endif /*_GLFW_HAS_XRANDR*/ |
| } |
| } |
| |
| |
| //======================================================================== |
| // Change the current video mode |
| //======================================================================== |
| |
| void _glfwSetVideoMode(int* width, int* height, int* rate) |
| { |
| int bestmode; |
| |
| // Find a best match mode |
| bestmode = _glfwGetClosestVideoMode(width, height, rate); |
| |
| // Change mode |
| _glfwSetVideoModeMODE(bestmode, *rate); |
| } |
| |
| |
| //======================================================================== |
| // Restore the previously saved (original) video mode |
| //======================================================================== |
| |
| void _glfwRestoreVideoMode(void) |
| { |
| if (_glfwLibrary.X11.FS.modeChanged) |
| { |
| if (_glfwLibrary.X11.RandR.available) |
| { |
| #if defined(_GLFW_HAS_XRANDR) |
| XRRScreenConfiguration* sc; |
| |
| if (_glfwLibrary.X11.RandR.available) |
| { |
| sc = XRRGetScreenInfo(_glfwLibrary.X11.display, |
| _glfwLibrary.X11.root); |
| |
| XRRSetScreenConfig(_glfwLibrary.X11.display, |
| sc, |
| _glfwLibrary.X11.root, |
| _glfwLibrary.X11.FS.oldSizeID, |
| _glfwLibrary.X11.FS.oldRotation, |
| CurrentTime); |
| |
| XRRFreeScreenConfigInfo(sc); |
| } |
| #endif /*_GLFW_HAS_XRANDR*/ |
| } |
| |
| _glfwLibrary.X11.FS.modeChanged = GL_FALSE; |
| } |
| } |
| |
| |
| ////////////////////////////////////////////////////////////////////////// |
| ////// GLFW platform API ////// |
| ////////////////////////////////////////////////////////////////////////// |
| |
| |
| //======================================================================== |
| // Return a list of available monitors |
| //======================================================================== |
| |
| _GLFWmonitor** _glfwPlatformGetMonitors(int* count) |
| { |
| int found = 0; |
| _GLFWmonitor** monitors = NULL; |
| |
| if (_glfwLibrary.X11.RandR.available) |
| { |
| #if defined (_GLFW_HAS_XRANDR) |
| int i; |
| RROutput primary; |
| XRRScreenResources* sr; |
| |
| sr = XRRGetScreenResources(_glfwLibrary.X11.display, |
| _glfwLibrary.X11.root); |
| |
| primary = XRRGetOutputPrimary(_glfwLibrary.X11.display, |
| _glfwLibrary.X11.root); |
| |
| monitors = (_GLFWmonitor**) calloc(sr->noutput, sizeof(_GLFWmonitor*)); |
| if (!monitors) |
| { |
| XRRFreeScreenResources(sr); |
| |
| _glfwSetError(GLFW_OUT_OF_MEMORY, NULL); |
| return NULL; |
| } |
| |
| for (i = 0; i < sr->noutput; i++) |
| { |
| XRROutputInfo* oi; |
| XRRCrtcInfo* ci; |
| int physicalWidth, physicalHeight; |
| |
| oi = XRRGetOutputInfo(_glfwLibrary.X11.display, sr, sr->outputs[i]); |
| if (oi->connection != RR_Connected) |
| { |
| XRRFreeOutputInfo(oi); |
| continue; |
| } |
| |
| if (oi->mm_width && oi->mm_height) |
| { |
| physicalWidth = oi->mm_width; |
| physicalHeight = oi->mm_height; |
| } |
| else |
| { |
| physicalWidth = DisplayWidthMM(_glfwLibrary.X11.display, |
| _glfwLibrary.X11.screen); |
| physicalHeight = DisplayHeightMM(_glfwLibrary.X11.display, |
| _glfwLibrary.X11.screen); |
| } |
| |
| ci = XRRGetCrtcInfo(_glfwLibrary.X11.display, sr, oi->crtc); |
| |
| monitors[found] = _glfwCreateMonitor(oi->name, |
| sr->outputs[i] == primary, |
| physicalWidth, physicalHeight, |
| ci->x, ci->y); |
| |
| XRRFreeCrtcInfo(ci); |
| |
| if (!monitors[found]) |
| { |
| // TODO: wat |
| return NULL; |
| } |
| |
| // This is retained until the monitor object is destroyed |
| monitors[found]->X11.output = oi; |
| found++; |
| } |
| #endif /*_GLFW_HAS_XRANDR*/ |
| } |
| |
| *count = found; |
| return monitors; |
| } |
| |
| |
| //======================================================================== |
| // Destroy a monitor struct |
| //======================================================================== |
| |
| void _glfwPlatformDestroyMonitor(_GLFWmonitor* monitor) |
| { |
| if (_glfwLibrary.X11.RandR.available) |
| { |
| #if defined (_GLFW_HAS_XRANDR) |
| XRRFreeOutputInfo(monitor->X11.output); |
| #endif /*_GLFW_HAS_XRANDR*/ |
| } |
| } |
| |
| |
| //======================================================================== |
| // List available video modes |
| //======================================================================== |
| |
| GLFWvidmode* _glfwPlatformGetVideoModes(_GLFWmonitor* monitor, int* found) |
| { |
| GLFWvidmode* result; |
| int depth, r, g, b; |
| |
| depth = DefaultDepth(_glfwLibrary.X11.display, _glfwLibrary.X11.screen); |
| _glfwSplitBPP(depth, &r, &g, &b); |
| |
| *found = 0; |
| |
| // Build array of available resolutions |
| |
| if (_glfwLibrary.X11.RandR.available) |
| { |
| #if defined(_GLFW_HAS_XRANDR) |
| XRRScreenResources* sr; |
| int i, j, count = monitor->X11.output->nmode; |
| |
| sr = XRRGetScreenResources(_glfwLibrary.X11.display, |
| _glfwLibrary.X11.root); |
| |
| result = (GLFWvidmode*) malloc(sizeof(GLFWvidmode) * count); |
| |
| for (i = 0; i < count; i++) |
| { |
| GLFWvidmode mode; |
| |
| for (j = 0; j < sr->nmode; j++) |
| { |
| if (sr->modes[j].id == monitor->X11.output->modes[i]) |
| break; |
| } |
| |
| if (j == sr->nmode) |
| continue; |
| |
| mode.width = sr->modes[j].width; |
| mode.height = sr->modes[j].height; |
| |
| for (j = 0; j < *found; j++) |
| { |
| if (result[j].width == mode.width && |
| result[j].height == mode.height) |
| { |
| break; |
| } |
| } |
| |
| if (j < *found) |
| { |
| // This is a duplicate, so skip it |
| continue; |
| } |
| |
| mode.redBits = r; |
| mode.greenBits = g; |
| mode.blueBits = b; |
| |
| result[*found] = mode; |
| (*found)++; |
| } |
| |
| XRRFreeScreenResources(sr); |
| #endif /*_GLFW_HAS_XRANDR*/ |
| } |
| |
| if (result == NULL) |
| { |
| *found = 1; |
| result = (GLFWvidmode*) malloc(sizeof(GLFWvidmode)); |
| |
| result[0].width = DisplayWidth(_glfwLibrary.X11.display, |
| _glfwLibrary.X11.screen); |
| result[0].height = DisplayHeight(_glfwLibrary.X11.display, |
| _glfwLibrary.X11.screen); |
| result[0].redBits = r; |
| result[0].greenBits = g; |
| result[0].blueBits = b; |
| } |
| |
| return result; |
| } |
| |
| |
| //======================================================================== |
| // Get the current video mode for the specified monitor |
| //======================================================================== |
| |
| void _glfwPlatformGetVideoMode(_GLFWmonitor* monitor, GLFWvidmode* mode) |
| { |
| if (_glfwLibrary.X11.RandR.available) |
| { |
| #if defined (_GLFW_HAS_XRANDR) |
| XRRScreenResources* sr; |
| XRRCrtcInfo* ci; |
| |
| sr = XRRGetScreenResources(_glfwLibrary.X11.display, |
| _glfwLibrary.X11.root); |
| if (!sr) |
| { |
| _glfwSetError(GLFW_PLATFORM_ERROR, |
| "X11: Failed to retrieve RandR screen resources"); |
| return; |
| } |
| |
| ci = XRRGetCrtcInfo(_glfwLibrary.X11.display, |
| sr, monitor->X11.output->crtc); |
| if (!ci) |
| { |
| XRRFreeScreenResources(sr); |
| |
| _glfwSetError(GLFW_PLATFORM_ERROR, |
| "X11: Failed to retrieve RandR crtc info"); |
| return; |
| } |
| |
| mode->width = ci->width; |
| mode->height = ci->height; |
| |
| XRRFreeCrtcInfo(ci); |
| XRRFreeScreenResources(sr); |
| #endif /*_GLFW_HAS_XRANDR*/ |
| } |
| else |
| { |
| mode->width = DisplayWidth(_glfwLibrary.X11.display, |
| _glfwLibrary.X11.screen); |
| mode->height = DisplayHeight(_glfwLibrary.X11.display, |
| _glfwLibrary.X11.screen); |
| } |
| |
| _glfwSplitBPP(DefaultDepth(_glfwLibrary.X11.display, |
| _glfwLibrary.X11.screen), |
| &mode->redBits, &mode->greenBits, &mode->blueBits); |
| } |
| |
