diff options
Diffstat (limited to 'src/glut/glx/glut_win.c')
| -rw-r--r-- | src/glut/glx/glut_win.c | 1007 |
1 files changed, 1007 insertions, 0 deletions
diff --git a/src/glut/glx/glut_win.c b/src/glut/glx/glut_win.c new file mode 100644 index 00000000000..883bacb0871 --- /dev/null +++ b/src/glut/glx/glut_win.c @@ -0,0 +1,1007 @@ + +/* Copyright (c) Mark J. Kilgard, 1994, 1997. */ + +/* This program is freely distributable without licensing fees + and is provided without guarantee or warrantee expressed or + implied. This program is -not- in the public domain. */ + +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <assert.h> +#if !defined(_WIN32) +#include <X11/Xlib.h> +#include <X11/Xatom.h> +#endif + +#include "glutint.h" + +GLUTwindow *__glutCurrentWindow = NULL; +GLUTwindow **__glutWindowList = NULL; +int __glutWindowListSize = 0; +#if !defined(_WIN32) +GLUTstale *__glutStaleWindowList = NULL; +#endif +GLUTwindow *__glutMenuWindow = NULL; + +void (*__glutFreeOverlayFunc) (GLUToverlay *); +XVisualInfo *(*__glutDetermineVisualFromString) (char *string, Bool * treatAsSingle, + Criterion * requiredCriteria, int nRequired, int requiredMask, void** fbc) = NULL; + +static Criterion requiredWindowCriteria[] = +{ + {LEVEL, EQ, 0}, + {TRANSPARENT, EQ, 0} +}; +static int numRequiredWindowCriteria = sizeof(requiredWindowCriteria) / sizeof(Criterion); +static int requiredWindowCriteriaMask = (1 << LEVEL) | (1 << TRANSPARENT); + +static void +cleanWindowWorkList(GLUTwindow * window) +{ + GLUTwindow **pEntry = &__glutWindowWorkList; + GLUTwindow *entry = __glutWindowWorkList; + + /* Tranverse singly-linked window work list look for the + window. */ + while (entry) { + if (entry == window) { + /* Found it; delete it. */ + *pEntry = entry->prevWorkWin; + return; + } else { + pEntry = &entry->prevWorkWin; + entry = *pEntry; + } + } +} + +#if !defined(_WIN32) + +static void +cleanStaleWindowList(GLUTwindow * window) +{ + GLUTstale **pEntry = &__glutStaleWindowList; + GLUTstale *entry = __glutStaleWindowList; + + /* Tranverse singly-linked stale window list look for the + window ID. */ + while (entry) { + if (entry->window == window) { + /* Found it; delete it. */ + *pEntry = entry->next; + free(entry); + return; + } else { + pEntry = &entry->next; + entry = *pEntry; + } + } +} + +#endif + +static GLUTwindow *__glutWindowCache = NULL; + +GLUTwindow * +__glutGetWindow(Window win) +{ + int i; + + /* Does win belong to the last window ID looked up? */ + if (__glutWindowCache && (win == __glutWindowCache->win || + (__glutWindowCache->overlay && win == + __glutWindowCache->overlay->win))) { + return + __glutWindowCache; + } + /* Otherwise scan the window list looking for the window ID. */ + for (i = 0; i < __glutWindowListSize; i++) { + if (__glutWindowList[i]) { + if (win == __glutWindowList[i]->win) { + __glutWindowCache = __glutWindowList[i]; + return __glutWindowCache; + } + if (__glutWindowList[i]->overlay) { + if (win == __glutWindowList[i]->overlay->win) { + __glutWindowCache = __glutWindowList[i]; + return __glutWindowCache; + } + } + } + } +#if !defined(_WIN32) + { + GLUTstale *entry; + + /* Scan through destroyed overlay window IDs for which no + DestroyNotify has yet been received. */ + for (entry = __glutStaleWindowList; entry; entry = entry->next) { + if (entry->win == win) + return entry->window; + } + } +#endif + return NULL; +} + +/* CENTRY */ +int APIENTRY +glutGetWindow(void) +{ + if (__glutCurrentWindow) { + return __glutCurrentWindow->num + 1; + } else { + return 0; + } +} +/* ENDCENTRY */ + +void +__glutSetWindow(GLUTwindow * window) +{ + /* It is tempting to try to short-circuit the call to + glXMakeCurrent if we "know" we are going to make current + to a window we are already current to. In fact, this + assumption breaks when GLUT is expected to integrated with + other OpenGL windowing APIs that also make current to + OpenGL contexts. Since glXMakeCurrent short-circuits the + "already bound" case, GLUT avoids the temptation to do so + too. */ + __glutCurrentWindow = window; + + MAKE_CURRENT_LAYER(__glutCurrentWindow); + +#if !defined(_WIN32) + /* We should be careful to force a finish between each + iteration through the GLUT main loop if indirect OpenGL + contexts are in use; indirect contexts tend to have much + longer latency because lots of OpenGL extension requests + can queue up in the X protocol stream. We accomplish this + by posting GLUT_FINISH_WORK to be done. */ + if (!__glutCurrentWindow->isDirect) + __glutPutOnWorkList(__glutCurrentWindow, GLUT_FINISH_WORK); +#endif + + /* If debugging is enabled, we'll want to check this window + for any OpenGL errors every iteration through the GLUT + main loop. To accomplish this, we post the + GLUT_DEBUG_WORK to be done on this window. */ + if (__glutDebug) { + __glutPutOnWorkList(__glutCurrentWindow, GLUT_DEBUG_WORK); + } +} + +/* CENTRY */ +void APIENTRY +glutSetWindow(int win) +{ + GLUTwindow *window; + + if (win < 1 || win > __glutWindowListSize) { + __glutWarning("glutSetWindow attempted on bogus window."); + return; + } + window = __glutWindowList[win - 1]; + if (!window) { + __glutWarning("glutSetWindow attempted on bogus window."); + return; + } + __glutSetWindow(window); +} +/* ENDCENTRY */ + +static int +getUnusedWindowSlot(void) +{ + int i; + + /* Look for allocated, unused slot. */ + for (i = 0; i < __glutWindowListSize; i++) { + if (!__glutWindowList[i]) { + return i; + } + } + /* Allocate a new slot. */ + __glutWindowListSize++; + if (__glutWindowList) { + __glutWindowList = (GLUTwindow **) + realloc(__glutWindowList, + __glutWindowListSize * sizeof(GLUTwindow *)); + } else { + /* XXX Some realloc's do not correctly perform a malloc + when asked to perform a realloc on a NULL pointer, + though the ANSI C library spec requires this. */ + __glutWindowList = (GLUTwindow **) + malloc(sizeof(GLUTwindow *)); + } + if (!__glutWindowList) + __glutFatalError("out of memory."); + __glutWindowList[__glutWindowListSize - 1] = NULL; + return __glutWindowListSize - 1; +} + +static XVisualInfo * +getVisualInfoCI(unsigned int mode) +{ + static int bufSizeList[] = + {16, 12, 8, 4, 2, 1, 0}; + XVisualInfo *vi; + int list[32]; + int i, n = 0; + + /* Should not be looking at display mode mask if + __glutDisplayString is non-NULL. */ + assert(!__glutDisplayString); + + list[n++] = GLX_BUFFER_SIZE; + list[n++] = 1; + if (GLUT_WIND_IS_DOUBLE(mode)) { + list[n++] = GLX_DOUBLEBUFFER; + } + if (GLUT_WIND_IS_STEREO(mode)) { + list[n++] = GLX_STEREO; + } + if (GLUT_WIND_HAS_DEPTH(mode)) { + list[n++] = GLX_DEPTH_SIZE; + list[n++] = 1; + } + if (GLUT_WIND_HAS_STENCIL(mode)) { + list[n++] = GLX_STENCIL_SIZE; + list[n++] = 1; + } + list[n] = (int) None; /* terminate list */ + + /* glXChooseVisual specify GLX_BUFFER_SIZE prefers the + "smallest index buffer of at least the specified size". + This would be reasonable if GLUT allowed the user to + specify the required buffe size, but GLUT's display mode + is too simplistic (easy to use?). GLUT should try to find + the "largest". So start with a large buffer size and + shrink until we find a matching one that exists. */ + + for (i = 0; bufSizeList[i]; i++) { + /* XXX Assumes list[1] is where GLX_BUFFER_SIZE parameter + is. */ + list[1] = bufSizeList[i]; + vi = glXChooseVisual(__glutDisplay, + __glutScreen, list); + if (vi) + return vi; + } + return NULL; +} + +static XVisualInfo * +getVisualInfoRGB(unsigned int mode) +{ + int list[32]; + int n = 0; + + /* Should not be looking at display mode mask if + __glutDisplayString is non-NULL. */ + assert(!__glutDisplayString); + + /* XXX Would a caching mechanism to minize the calls to + glXChooseVisual? You'd have to reference count + XVisualInfo* pointers. Would also have to properly + interact with glutInitDisplayString. */ + + list[n++] = GLX_RGBA; + list[n++] = GLX_RED_SIZE; + list[n++] = 1; + list[n++] = GLX_GREEN_SIZE; + list[n++] = 1; + list[n++] = GLX_BLUE_SIZE; + list[n++] = 1; + if (GLUT_WIND_HAS_ALPHA(mode)) { + list[n++] = GLX_ALPHA_SIZE; + list[n++] = 1; + } + if (GLUT_WIND_IS_DOUBLE(mode)) { + list[n++] = GLX_DOUBLEBUFFER; + } + if (GLUT_WIND_IS_STEREO(mode)) { + list[n++] = GLX_STEREO; + } + if (GLUT_WIND_HAS_DEPTH(mode)) { + list[n++] = GLX_DEPTH_SIZE; + list[n++] = 1; + } + if (GLUT_WIND_HAS_STENCIL(mode)) { + list[n++] = GLX_STENCIL_SIZE; + list[n++] = 1; + } + if (GLUT_WIND_HAS_ACCUM(mode)) { + list[n++] = GLX_ACCUM_RED_SIZE; + list[n++] = 1; + list[n++] = GLX_ACCUM_GREEN_SIZE; + list[n++] = 1; + list[n++] = GLX_ACCUM_BLUE_SIZE; + list[n++] = 1; + if (GLUT_WIND_HAS_ALPHA(mode)) { + list[n++] = GLX_ACCUM_ALPHA_SIZE; + list[n++] = 1; + } + } +#if defined(GLX_VERSION_1_1) && defined(GLX_SGIS_multisample) + if (GLUT_WIND_IS_MULTISAMPLE(mode)) { + if (!__glutIsSupportedByGLX("GLX_SGIS_multisample")) + return NULL; + list[n++] = GLX_SAMPLES_SGIS; + /* XXX Is 4 a reasonable minimum acceptable number of + samples? */ + list[n++] = 4; + } +#endif + list[n] = (int) None; /* terminate list */ + + return glXChooseVisual(__glutDisplay, + __glutScreen, list); +} + +XVisualInfo * +__glutGetVisualInfo(unsigned int mode) +{ + /* XXX GLUT_LUMINANCE not implemented for GLUT 3.0. */ + if (GLUT_WIND_IS_LUMINANCE(mode)) + return NULL; + + if (GLUT_WIND_IS_RGB(mode)) + return getVisualInfoRGB(mode); + else + return getVisualInfoCI(mode); +} + +XVisualInfo * +__glutDetermineVisual( + unsigned int displayMode, + Bool * treatAsSingle, + XVisualInfo * (getVisualInfo) (unsigned int)) +{ + XVisualInfo *vis; + + /* Should not be looking at display mode mask if + __glutDisplayString is non-NULL. */ + assert(!__glutDisplayString); + + *treatAsSingle = GLUT_WIND_IS_SINGLE(displayMode); + vis = getVisualInfo(displayMode); + if (!vis) { + /* Fallback cases when can't get exactly what was asked + for... */ + if (GLUT_WIND_IS_SINGLE(displayMode)) { + /* If we can't find a single buffered visual, try looking + for a double buffered visual. We can treat a double + buffered visual as a single buffer visual by changing + the draw buffer to GL_FRONT and treating any swap + buffers as no-ops. */ + displayMode |= GLUT_DOUBLE; + vis = getVisualInfo(displayMode); + *treatAsSingle = True; + } + if (!vis && GLUT_WIND_IS_MULTISAMPLE(displayMode)) { + /* If we can't seem to get multisampling (ie, not Reality + Engine class graphics!), go without multisampling. It + is up to the application to query how many multisamples + were allocated (0 equals no multisampling) if the + application is going to use multisampling for more than + just antialiasing. */ + displayMode &= ~GLUT_MULTISAMPLE; + vis = getVisualInfo(displayMode); + } + } + return vis; +} + +void GLUTCALLBACK +__glutDefaultDisplay(void) +{ + /* XXX Remove the warning after GLUT 3.0. */ + __glutWarning("The following is a new check for GLUT 3.0; update your code."); + __glutFatalError( + "redisplay needed for window %d, but no display callback.", + __glutCurrentWindow->num + 1); +} + +void GLUTCALLBACK +__glutDefaultReshape(int width, int height) +{ + GLUToverlay *overlay; + + /* Adjust the viewport of the window (and overlay if one + exists). */ + MAKE_CURRENT_WINDOW(__glutCurrentWindow); + glViewport(0, 0, (GLsizei) width, (GLsizei) height); + overlay = __glutCurrentWindow->overlay; + if (overlay) { + MAKE_CURRENT_OVERLAY(overlay); + glViewport(0, 0, (GLsizei) width, (GLsizei) height); + } + /* Make sure we are current to the current layer (application + should be able to count on the current layer not changing + unless the application explicitly calls glutUseLayer). */ + MAKE_CURRENT_LAYER(__glutCurrentWindow); +} + +XVisualInfo * +__glutDetermineWindowVisual(Bool * treatAsSingle, Bool * visAlloced, void **fbc) +{ + if (__glutDisplayString) { + + /* __glutDisplayString should be NULL except if + glutInitDisplayString has been called to register a + different display string. Calling glutInitDisplayString + means using a string instead of an integer mask determine + the visual to use. Using the function pointer variable + __glutDetermineVisualFromString below avoids linking in + the code for implementing glutInitDisplayString (ie, + glut_dstr.o) unless glutInitDisplayString gets called by + the application. */ + + assert(__glutDetermineVisualFromString); + *visAlloced = False; + *fbc = NULL; + return __glutDetermineVisualFromString(__glutDisplayString, treatAsSingle, + requiredWindowCriteria, numRequiredWindowCriteria, requiredWindowCriteriaMask, fbc); + } else { + *visAlloced = True; + *fbc = NULL; + return __glutDetermineVisual(__glutDisplayMode, + treatAsSingle, __glutGetVisualInfo); + } +} + +/* ARGSUSED5 */ /* Only Win32 uses gameMode parameter. */ +GLUTwindow * +__glutCreateWindow(GLUTwindow * parent, + int x, int y, int width, int height, int gameMode) +{ + GLUTwindow *window; + XSetWindowAttributes wa; + unsigned long attribMask; + int winnum; + int i; +#if defined(GLX_VERSION_1_1) && defined(GLX_SGIX_fbconfig) + GLXFBConfigSGIX fbc; +#else + void *fbc; +#endif + +#if defined(_WIN32) + WNDCLASS wc; + int style; + + if (!GetClassInfo(GetModuleHandle(NULL), "GLUT", &wc)) { + __glutOpenWin32Connection(NULL); + } +#else + if (!__glutDisplay) { + __glutOpenXConnection(NULL); + } +#endif + if (__glutGameModeWindow) { + __glutFatalError("cannot create windows in game mode."); + } + winnum = getUnusedWindowSlot(); + window = (GLUTwindow *) malloc(sizeof(GLUTwindow)); + if (!window) { + __glutFatalError("out of memory."); + } + window->num = winnum; + +#if !defined(_WIN32) + window->vis = __glutDetermineWindowVisual(&window->treatAsSingle, + &window->visAlloced, (void**) &fbc); + if (!window->vis) { + __glutFatalError( + "visual with necessary capabilities not found."); + } + __glutSetupColormap(window->vis, &window->colormap, &window->cmap); +#endif + window->eventMask = StructureNotifyMask | ExposureMask; + + attribMask = CWBackPixmap | CWBorderPixel | CWColormap | CWEventMask; + wa.background_pixmap = None; + wa.border_pixel = 0; + wa.colormap = window->cmap; + wa.event_mask = window->eventMask; + if (parent) { + if (parent->eventMask & GLUT_HACK_STOP_PROPAGATE_MASK) + wa.event_mask |= GLUT_HACK_STOP_PROPAGATE_MASK; + attribMask |= CWDontPropagate; + wa.do_not_propagate_mask = parent->eventMask & GLUT_DONT_PROPAGATE_FILTER_MASK; + } else { + wa.do_not_propagate_mask = 0; + } + + /* Stash width and height before Win32's __glutAdjustCoords + possibly overwrites the values. */ + window->width = width; + window->height = height; + window->forceReshape = True; + window->ignoreKeyRepeat = False; + +#if defined(_WIN32) + __glutAdjustCoords(parent ? parent->win : NULL, + &x, &y, &width, &height); + if (parent) { + style = WS_CHILD; + } else { + if (gameMode) { + /* Game mode window should be a WS_POPUP window to + ensure that the taskbar is hidden by it. A standard + WS_OVERLAPPEDWINDOW does not hide the task bar. */ + style = WS_POPUP | WS_MAXIMIZE; + } else { + /* A standard toplevel window with borders and such. */ + style = WS_OVERLAPPEDWINDOW; + } + } + window->win = CreateWindow("GLUT", "GLUT", + WS_CLIPSIBLINGS | WS_CLIPCHILDREN | style, + x, y, width, height, parent ? parent->win : __glutRoot, + NULL, GetModuleHandle(NULL), 0); + window->hdc = GetDC(window->win); + /* Must set the XHDC for fake glXChooseVisual & fake + glXCreateContext & fake XAllocColorCells. */ + XHDC = window->hdc; + window->vis = __glutDetermineWindowVisual(&window->treatAsSingle, + &window->visAlloced, &fbc); + if (!window->vis) { + __glutFatalError( + "pixel format with necessary capabilities not found."); + } + if (!SetPixelFormat(window->hdc, + ChoosePixelFormat(window->hdc, window->vis), + window->vis)) { + __glutFatalError("SetPixelFormat failed during window create."); + } + __glutSetupColormap(window->vis, &window->colormap, &window->cmap); + /* Make sure subwindows get a windowStatus callback. */ + if (parent) { + PostMessage(parent->win, WM_ACTIVATE, 0, 0); + } + window->renderDc = window->hdc; +#else + window->win = XCreateWindow(__glutDisplay, + parent == NULL ? __glutRoot : parent->win, + x, y, width, height, 0, + window->vis->depth, InputOutput, window->vis->visual, + attribMask, &wa); +#endif + window->renderWin = window->win; +#if defined(GLX_VERSION_1_1) && defined(GLX_SGIX_fbconfig) + if (fbc) { + window->ctx = glXCreateContextWithConfigSGIX(__glutDisplay, fbc, + GLX_RGBA_TYPE_SGIX, None, __glutTryDirect); + } else +#endif + { + window->ctx = glXCreateContext(__glutDisplay, window->vis, + None, __glutTryDirect); + } + if (!window->ctx) { + __glutFatalError( + "failed to create OpenGL rendering context."); + } + window->renderCtx = window->ctx; +#if !defined(_WIN32) + window->isDirect = glXIsDirect(__glutDisplay, window->ctx); + if (__glutForceDirect) { + if (!window->isDirect) + __glutFatalError("direct rendering not possible."); + } +#endif + + window->parent = parent; + if (parent) { + window->siblings = parent->children; + parent->children = window; + } else { + window->siblings = NULL; + } + window->overlay = NULL; + window->children = NULL; + window->display = __glutDefaultDisplay; + window->reshape = __glutDefaultReshape; + window->mouse = NULL; + window->motion = NULL; + window->passive = NULL; + window->entry = NULL; + window->keyboard = NULL; + window->keyboardUp = NULL; + window->windowStatus = NULL; + window->visibility = NULL; + window->special = NULL; + window->specialUp = NULL; + window->buttonBox = NULL; + window->dials = NULL; + window->spaceMotion = NULL; + window->spaceRotate = NULL; + window->spaceButton = NULL; + window->tabletMotion = NULL; + window->tabletButton = NULL; +#ifdef _WIN32 + window->joystick = NULL; + window->joyPollInterval = 0; +#endif + window->tabletPos[0] = -1; + window->tabletPos[1] = -1; + window->shownState = 0; + window->visState = -1; /* not VisibilityUnobscured, + VisibilityPartiallyObscured, or + VisibilityFullyObscured */ + window->entryState = -1; /* not EnterNotify or LeaveNotify */ + + window->desiredConfMask = 0; + window->buttonUses = 0; + window->cursor = GLUT_CURSOR_INHERIT; + + /* Setup window to be mapped when glutMainLoop starts. */ + window->workMask = GLUT_MAP_WORK; +#ifdef _WIN32 + if (gameMode) { + /* When mapping a game mode window, just show + the window. We have already created the game + mode window with a maximize flag at creation + time. Doing a ShowWindow(window->win, SW_SHOWNORMAL) + would be wrong for a game mode window since it + would unmaximize the window. */ + window->desiredMapState = GameModeState; + } else { + window->desiredMapState = NormalState; + } +#else + window->desiredMapState = NormalState; +#endif + window->prevWorkWin = __glutWindowWorkList; + __glutWindowWorkList = window; + + /* Initially, no menus attached. */ + for (i = 0; i < GLUT_MAX_MENUS; i++) { + window->menu[i] = 0; + } + + /* Add this new window to the window list. */ + __glutWindowList[winnum] = window; + + /* Make the new window the current window. */ + __glutSetWindow(window); + + __glutDetermineMesaSwapHackSupport(); + + if (window->treatAsSingle) { + /* We do this because either the window really is single + buffered (in which case this is redundant, but harmless, + because this is the initial single-buffered context + state); or we are treating a double buffered window as a + single-buffered window because the system does not appear + to export any suitable single- buffered visuals (in which + the following are necessary). */ + glDrawBuffer(GL_FRONT); + glReadBuffer(GL_FRONT); + } + return window; +} + +/* CENTRY */ +int APIENTRY +glutCreateWindow(const char *title) +{ + static int firstWindow = 1; + GLUTwindow *window; +#if !defined(_WIN32) + XWMHints *wmHints; +#endif + Window win; + XTextProperty textprop; + + if (__glutGameModeWindow) { + __glutFatalError("cannot create windows in game mode."); + } + window = __glutCreateWindow(NULL, + __glutSizeHints.x, __glutSizeHints.y, + __glutInitWidth, __glutInitHeight, + /* not game mode */ 0); + win = window->win; + /* Setup ICCCM properties. */ + textprop.value = (unsigned char *) title; + textprop.encoding = XA_STRING; + textprop.format = 8; + textprop.nitems = strlen(title); +#if defined(_WIN32) + SetWindowText(win, title); + if (__glutIconic) { + window->desiredMapState = IconicState; + } +#else + wmHints = XAllocWMHints(); + wmHints->initial_state = + __glutIconic ? IconicState : NormalState; + wmHints->flags = StateHint; + XSetWMProperties(__glutDisplay, win, &textprop, &textprop, + /* Only put WM_COMMAND property on first window. */ + firstWindow ? __glutArgv : NULL, + firstWindow ? __glutArgc : 0, + &__glutSizeHints, wmHints, NULL); + XFree(wmHints); + XSetWMProtocols(__glutDisplay, win, &__glutWMDeleteWindow, 1); +#endif + firstWindow = 0; + return window->num + 1; +} + +#ifdef _WIN32 +int APIENTRY +__glutCreateWindowWithExit(const char *title, void (__cdecl *exitfunc)(int)) +{ + __glutExitFunc = exitfunc; + return glutCreateWindow(title); +} +#endif + +int APIENTRY +glutCreateSubWindow(int win, int x, int y, int width, int height) +{ + GLUTwindow *window; + + window = __glutCreateWindow(__glutWindowList[win - 1], + x, y, width, height, /* not game mode */ 0); +#if !defined(_WIN32) + { + GLUTwindow *toplevel; + + toplevel = __glutToplevelOf(window); + if (toplevel->cmap != window->cmap) { + __glutPutOnWorkList(toplevel, GLUT_COLORMAP_WORK); + } + } +#endif + return window->num + 1; +} +/* ENDCENTRY */ + +void +__glutDestroyWindow(GLUTwindow * window, + GLUTwindow * initialWindow) +{ + GLUTwindow **prev, *cur, *parent, *siblings; + + /* Recursively destroy any children. */ + cur = window->children; + while (cur) { + siblings = cur->siblings; + __glutDestroyWindow(cur, initialWindow); + cur = siblings; + } + /* Remove from parent's children list (only necessary for + non-initial windows and subwindows!). */ + parent = window->parent; + if (parent && parent == initialWindow->parent) { + prev = &parent->children; + cur = parent->children; + while (cur) { + if (cur == window) { + *prev = cur->siblings; + break; + } + prev = &(cur->siblings); + cur = cur->siblings; + } + } + /* Unbind if bound to this window. */ + if (window == __glutCurrentWindow) { + UNMAKE_CURRENT(); + __glutCurrentWindow = NULL; + } + /* Begin tearing down window itself. */ + if (window->overlay) { + __glutFreeOverlayFunc(window->overlay); + } + XDestroyWindow(__glutDisplay, window->win); + glXDestroyContext(__glutDisplay, window->ctx); + if (window->colormap) { + /* Only color index windows have colormap data structure. */ + __glutFreeColormap(window->colormap); + } + /* NULLing the __glutWindowList helps detect is a window + instance has been destroyed, given a window number. */ + __glutWindowList[window->num] = NULL; + + /* Cleanup data structures that might contain window. */ + cleanWindowWorkList(window); +#if !defined(_WIN32) + cleanStaleWindowList(window); +#endif + /* Remove window from the "get window cache" if it is there. */ + if (__glutWindowCache == window) + __glutWindowCache = NULL; + + if (window->visAlloced) { + /* Only free XVisualInfo* gotten from glXChooseVisual. */ + XFree(window->vis); + } + + if (window == __glutGameModeWindow) { + /* Destroying the game mode window should implicitly + have GLUT leave game mode. */ + __glutCloseDownGameMode(); + } + + free(window); +} + +/* CENTRY */ +void APIENTRY +glutDestroyWindow(int win) +{ + GLUTwindow *window = __glutWindowList[win - 1]; + + if (__glutMappedMenu && __glutMenuWindow == window) { + __glutFatalUsage("destroying menu window not allowed while menus in use"); + } +#if !defined(_WIN32) + /* If not a toplevel window... */ + if (window->parent) { + /* Destroying subwindows may change colormap requirements; + recalculate toplevel window's WM_COLORMAP_WINDOWS + property. */ + __glutPutOnWorkList(__glutToplevelOf(window->parent), + GLUT_COLORMAP_WORK); + } +#endif + __glutDestroyWindow(window, window); + XFlush(__glutDisplay); +} +/* ENDCENTRY */ + +void +__glutChangeWindowEventMask(long eventMask, Bool add) +{ + if (add) { + /* Add eventMask to window's event mask. */ + if ((__glutCurrentWindow->eventMask & eventMask) != + eventMask) { + __glutCurrentWindow->eventMask |= eventMask; + __glutPutOnWorkList(__glutCurrentWindow, + GLUT_EVENT_MASK_WORK); + } + } else { + /* Remove eventMask from window's event mask. */ + if (__glutCurrentWindow->eventMask & eventMask) { + __glutCurrentWindow->eventMask &= ~eventMask; + __glutPutOnWorkList(__glutCurrentWindow, + GLUT_EVENT_MASK_WORK); + } + } +} + +void APIENTRY +glutDisplayFunc(GLUTdisplayCB displayFunc) +{ + /* XXX Remove the warning after GLUT 3.0. */ + if (!displayFunc) + __glutFatalError("NULL display callback not allowed in GLUT 3.0; update your code."); + __glutCurrentWindow->display = displayFunc; +} + +void APIENTRY +glutMouseFunc(GLUTmouseCB mouseFunc) +{ + if (__glutCurrentWindow->mouse) { + if (!mouseFunc) { + /* Previous mouseFunc being disabled. */ + __glutCurrentWindow->buttonUses--; + __glutChangeWindowEventMask( + ButtonPressMask | ButtonReleaseMask, + __glutCurrentWindow->buttonUses > 0); + } + } else { + if (mouseFunc) { + /* Previously no mouseFunc, new one being installed. */ + __glutCurrentWindow->buttonUses++; + __glutChangeWindowEventMask( + ButtonPressMask | ButtonReleaseMask, True); + } + } + __glutCurrentWindow->mouse = mouseFunc; +} + +void APIENTRY +glutMotionFunc(GLUTmotionCB motionFunc) +{ + /* Hack. Some window managers (4Dwm by default) will mask + motion events if the client is not selecting for button + press and release events. So we select for press and + release events too (being careful to use reference + counting). */ + if (__glutCurrentWindow->motion) { + if (!motionFunc) { + /* previous mouseFunc being disabled */ + __glutCurrentWindow->buttonUses--; + __glutChangeWindowEventMask( + ButtonPressMask | ButtonReleaseMask, + __glutCurrentWindow->buttonUses > 0); + } + } else { + if (motionFunc) { + /* Previously no mouseFunc, new one being installed. */ + __glutCurrentWindow->buttonUses++; + __glutChangeWindowEventMask( + ButtonPressMask | ButtonReleaseMask, True); + } + } + /* Real work of selecting for passive mouse motion. */ + __glutChangeWindowEventMask( + Button1MotionMask | Button2MotionMask | Button3MotionMask, + motionFunc != NULL); + __glutCurrentWindow->motion = motionFunc; +} + +void APIENTRY +glutPassiveMotionFunc(GLUTpassiveCB passiveMotionFunc) +{ + __glutChangeWindowEventMask(PointerMotionMask, + passiveMotionFunc != NULL); + + /* Passive motion also requires watching enters and leaves so + that a fake passive motion event can be generated on an + enter. */ + __glutChangeWindowEventMask(EnterWindowMask | LeaveWindowMask, + __glutCurrentWindow->entry != NULL || passiveMotionFunc != NULL); + + __glutCurrentWindow->passive = passiveMotionFunc; +} + +void APIENTRY +glutEntryFunc(GLUTentryCB entryFunc) +{ + __glutChangeWindowEventMask(EnterWindowMask | LeaveWindowMask, + entryFunc != NULL || __glutCurrentWindow->passive); + __glutCurrentWindow->entry = entryFunc; + if (!entryFunc) { + __glutCurrentWindow->entryState = -1; + } +} + +void APIENTRY +glutWindowStatusFunc(GLUTwindowStatusCB windowStatusFunc) +{ + __glutChangeWindowEventMask(VisibilityChangeMask, + windowStatusFunc != NULL); + __glutCurrentWindow->windowStatus = windowStatusFunc; + if (!windowStatusFunc) { + /* Make state invalid. */ + __glutCurrentWindow->visState = -1; + } +} + +static void GLUTCALLBACK +visibilityHelper(int status) +{ + if (status == GLUT_HIDDEN || status == GLUT_FULLY_COVERED) + __glutCurrentWindow->visibility(GLUT_NOT_VISIBLE); + else + __glutCurrentWindow->visibility(GLUT_VISIBLE); +} + +void APIENTRY +glutVisibilityFunc(GLUTvisibilityCB visibilityFunc) +{ + __glutCurrentWindow->visibility = visibilityFunc; + if (visibilityFunc) + glutWindowStatusFunc(visibilityHelper); + else + glutWindowStatusFunc(NULL); +} + +void APIENTRY +glutReshapeFunc(GLUTreshapeCB reshapeFunc) +{ + if (reshapeFunc) { + __glutCurrentWindow->reshape = reshapeFunc; + } else { + __glutCurrentWindow->reshape = __glutDefaultReshape; + } +} |