diff options
Diffstat (limited to 'xc/extras/Mesa/src-glut.beos/glutEvent.cpp')
| -rw-r--r-- | xc/extras/Mesa/src-glut.beos/glutEvent.cpp | 721 |
1 files changed, 721 insertions, 0 deletions
diff --git a/xc/extras/Mesa/src-glut.beos/glutEvent.cpp b/xc/extras/Mesa/src-glut.beos/glutEvent.cpp new file mode 100644 index 000000000..20b1cad23 --- /dev/null +++ b/xc/extras/Mesa/src-glut.beos/glutEvent.cpp @@ -0,0 +1,721 @@ +/*********************************************************** + * Copyright (C) 1997, Be Inc. All rights reserved. + * + * FILE: glutEvent.cpp + * + * DESCRIPTION: here it is, the BeOS GLUT event loop + ***********************************************************/ + +/*********************************************************** + * Headers + ***********************************************************/ +#include <GL/glut.h> +#include "glutint.h" +#include "glutState.h" +#include "glutBlocker.h" + +/*********************************************************** + * CLASS: GLUTtimer + * + * DESCRIPTION: list of timer callbacks + ***********************************************************/ +struct GLUTtimer { + GLUTtimer *next; // list of timers + bigtime_t timeout; // time to be called + GLUTtimerCB func; // function to call + int value; // value +}; + +/*********************************************************** + * Private variables + ***********************************************************/ +static GLUTtimer *__glutTimerList = 0; // list of timer callbacks +static GLUTtimer *freeTimerList = 0; + +/*********************************************************** + * FUNCTION: glutTimerFunc (7.19) + * + * DESCRIPTION: register a new timer callback + ***********************************************************/ +void APIENTRY +glutTimerFunc(unsigned int interval, GLUTtimerCB timerFunc, int value) +{ + GLUTtimer *timer, *other; + GLUTtimer **prevptr; + + if (!timerFunc) + return; + + if (freeTimerList) { + timer = freeTimerList; + freeTimerList = timer->next; + } else { + timer = new GLUTtimer(); + if (!timer) + __glutFatalError("out of memory."); + } + + timer->func = timerFunc; + timer->value = value; + timer->next = NULL; + timer->timeout = system_time() + (interval*1000); // 1000 ticks in a millisecond + prevptr = &__glutTimerList; + other = *prevptr; + while (other && (other->timeout < timer->timeout)) { + prevptr = &other->next; + other = *prevptr; + } + timer->next = other; + *prevptr = timer; +} + +/*********************************************************** + * FUNCTION: handleTimeouts + * + * DESCRIPTION: private function to handle outstanding timeouts + ***********************************************************/ +static void +handleTimeouts(void) +{ + bigtime_t now; + GLUTtimer *timer; + + /* Assumption is that __glutTimerList is already determined + to be non-NULL. */ + now = system_time(); + while (__glutTimerList->timeout <= now) { + timer = __glutTimerList; + if(gState.currentWindow) + gState.currentWindow->LockGL(); + timer->func(timer->value); + if(gState.currentWindow) + gState.currentWindow->UnlockGL(); + __glutTimerList = timer->next; + timer->next = freeTimerList; + freeTimerList = timer; + if (!__glutTimerList) + break; + } +} + + +/*********************************************************** + * FUNCTION: processEventsAndTimeouts + * + * DESCRIPTION: clear gBlock, then check all windows for events + ***********************************************************/ +static void +processEventsAndTimeouts(void) +{ + gBlock.WaitEvent(); // if there is already an event, returns + // immediately, otherwise wait forever + gBlock.ClearEvents(); + + if (gState.currentWindow) + gState.currentWindow->LockGL(); + for(int i=0; i<gState.windowListSize; i++) { + if (gState.windowList[i]) { + GlutWindow *win = gState.windowList[i]; + win->Window()->Lock(); + // NOTE: we can use win as a shortcut for gState.windowList[i] + // in callbacks, EXCEPT we need to check the original variable + // after each callback to make sure the window hasn't been destroyed + if (win->anyevents) { + win->anyevents = false; + if (win->reshapeEvent) { + win->reshapeEvent = false; + __glutSetWindow(win); + win->reshape(win->m_width, win->m_height); + } + if (!gState.windowList[i]) + continue; // window was destroyed by callback! + + if (win->displayEvent) { + win->displayEvent = false; + __glutSetWindow(win); + win->display(); + if (gState.windowList[i] && win->swapHack) { + // fake single buffering by swapping buffers + __glutSetWindow(win); + win->SwapBuffers(); + } + } + if (!gState.windowList[i]) + continue; // window was destroyed by callback! + + if (win->mouseEvent) { + win->mouseEvent = false; + __glutSetWindow(win); + if (win->mouse) { + gState.modifierKeys = win->modifierKeys; + win->mouse(win->button, win->mouseState, win->mouseX, win->mouseY); + gState.modifierKeys = ~0; + } + } + if (!gState.windowList[i]) + continue; // window was destroyed by callback! + + if (win->menuEvent) { + win->menuEvent = false; + __glutSetWindow(win); + GlutMenu *menu = __glutGetMenuByNum(win->menuNumber); + if (menu) { + gState.currentMenu = menu; + menu->select(win->menuValue); + } + } + if (!gState.windowList[i]) + continue; // window was destroyed by callback! + + if (win->statusEvent) { + win->statusEvent = false; + __glutSetWindow(win); + if (gState.menuStatus) { + gState.currentMenu = __glutGetMenuByNum(win->menuNumber); + gState.menuStatus(win->menuStatus, win->statusX, win->statusY); + } + } + if (!gState.windowList[i]) + continue; // window was destroyed by callback! + + if (win->motionEvent) { + win->motionEvent = false; + __glutSetWindow(win); + if (win->motion) + win->motion(win->motionX, win->motionY); + } + if (!gState.windowList[i]) + continue; // window was destroyed by callback! + + if (win->passiveEvent) { + win->passiveEvent = false; + __glutSetWindow(win); + if (win->passive) + win->passive(win->passiveX, win->passiveY); + } + if (!gState.windowList[i]) + continue; // window was destroyed by callback! + + if (win->keybEvent) { + win->keybEvent = false; + __glutSetWindow(win); + if (win->keyboard) { + gState.modifierKeys = win->modifierKeys; + win->keyboard(win->key, win->keyX, win->keyY); + gState.modifierKeys = ~0; + } + } + if (!gState.windowList[i]) + continue; // window was destroyed by callback! + + if (win->specialEvent) { + win->specialEvent = false; + __glutSetWindow(win); + if (win->special) { + gState.modifierKeys = win->modifierKeys; + win->special(win->specialKey, win->specialX, win->specialY); + gState.modifierKeys = ~0; + } + } + if (!gState.windowList[i]) + continue; // window was destroyed by callback! + + if (win->entryEvent) { + win->entryEvent = false; + __glutSetWindow(win); + if (win->entry) + win->entry(win->entryState); + } + if (!gState.windowList[i]) + continue; // window was destroyed by callback! + + if (win->visEvent) { + win->visEvent = false; + __glutSetWindow(win); + if (win->visibility) + win->visibility(win->visState); + } + if (!gState.windowList[i]) + continue; // window was destroyed by callback! + } + if(gState.windowList[i]) // window hasn't been destroyed + win->Window()->Unlock(); + } + } + if (gState.currentWindow) + gState.currentWindow->UnlockGL(); + + // This code isn't necessary since BGLView automatically traps errors +#if 0 + if(gState.debug) { + for(int i=0; i<gState.windowListSize; i++) { + if (gState.windowList[i]) { + gState.windowList[i]->LockGL(); + glutReportErrors(); + gState.windowList[i]->UnlockGL(); + } + } + } +#endif + if (__glutTimerList) { + handleTimeouts(); + } +} + +/*********************************************************** + * FUNCTION: waitForSomething + * + * DESCRIPTION: use gBlock to wait for a new event or timeout + ***********************************************************/ +static void +waitForSomething(void) +{ + bigtime_t timeout = __glutTimerList->timeout; + bigtime_t now = system_time(); + + if (gBlock.PendingEvent()) + goto immediatelyHandleEvent; + + if(timeout>now) + gBlock.WaitEvent(timeout-now); + if (gBlock.PendingEvent()) { + immediatelyHandleEvent: + processEventsAndTimeouts(); + } else { + if (__glutTimerList) + handleTimeouts(); + } +} + +/*********************************************************** + * FUNCTION: idleWait + * + * DESCRIPTION: check for events, then call idle function + ***********************************************************/ +static void +idleWait(void) +{ + if (gBlock.PendingEvent()) { + processEventsAndTimeouts(); + } else { + if (__glutTimerList) + handleTimeouts(); + } + /* Make sure idle func still exists! */ + if(gState.currentWindow) + gState.currentWindow->LockGL(); + if (gState.idle) + gState.idle(); + if(gState.currentWindow) + gState.currentWindow->UnlockGL(); +} + +/*********************************************************** + * FUNCTION: glutMainLoop (3.1) + * + * DESCRIPTION: enter the event processing loop + ***********************************************************/ +void glutMainLoop() +{ + if (!gState.windowListSize) + __glutFatalUsage("main loop entered with no windows created."); + + if(gState.currentWindow) + gState.currentWindow->UnlockGL(); + + for (;;) { + if (gState.idle) { + idleWait(); + } else { + if (__glutTimerList) { + waitForSomething(); + } else { + processEventsAndTimeouts(); + } + } + } +} + +/*********************************************************** + * CLASS: GlutWindow + * + * FUNCTION: KeyDown + * + * DESCRIPTION: handles keyboard and special events + ***********************************************************/ +void GlutWindow::KeyDown(const char *s, int32 slen) +{ + ulong aChar = s[0]; + BGLView::KeyDown(s,slen); + + BPoint p; + + switch (aChar) { + case B_FUNCTION_KEY: + switch(Window()->CurrentMessage()->FindInt32("key")) { + case B_F1_KEY: + aChar = GLUT_KEY_F1; + goto specialLabel; + case B_F2_KEY: + aChar = GLUT_KEY_F2; + goto specialLabel; + case B_F3_KEY: + aChar = GLUT_KEY_F3; + goto specialLabel; + case B_F4_KEY: + aChar = GLUT_KEY_F4; + goto specialLabel; + case B_F5_KEY: + aChar = GLUT_KEY_F5; + goto specialLabel; + case B_F6_KEY: + aChar = GLUT_KEY_F6; + goto specialLabel; + case B_F7_KEY: + aChar = GLUT_KEY_F7; + goto specialLabel; + case B_F8_KEY: + aChar = GLUT_KEY_F8; + goto specialLabel; + case B_F9_KEY: + aChar = GLUT_KEY_F9; + goto specialLabel; + case B_F10_KEY: + aChar = GLUT_KEY_F10; + goto specialLabel; + case B_F11_KEY: + aChar = GLUT_KEY_F11; + goto specialLabel; + case B_F12_KEY: + aChar = GLUT_KEY_F12; + goto specialLabel; + default: + return; + } + case B_LEFT_ARROW: + aChar = GLUT_KEY_LEFT; + goto specialLabel; + case B_UP_ARROW: + aChar = GLUT_KEY_UP; + goto specialLabel; + case B_RIGHT_ARROW: + aChar = GLUT_KEY_RIGHT; + goto specialLabel; + case B_DOWN_ARROW: + aChar = GLUT_KEY_DOWN; + goto specialLabel; + case B_PAGE_UP: + aChar = GLUT_KEY_PAGE_UP; + goto specialLabel; + case B_PAGE_DOWN: + aChar = GLUT_KEY_PAGE_DOWN; + goto specialLabel; + case B_HOME: + aChar = GLUT_KEY_HOME; + goto specialLabel; + case B_END: + aChar = GLUT_KEY_END; + goto specialLabel; + case B_INSERT: + aChar = GLUT_KEY_INSERT; +specialLabel: + if (special) { + anyevents = specialEvent = true; + GetMouse(&p,&m_buttons); + specialKey = aChar; + specialX = (int)p.x; + specialY = (int)p.y; + goto setModifiers; // set the modifier variable + } + return; + + default: + break; + } + + if (keyboard) { + anyevents = keybEvent = true; + GetMouse(&p,&m_buttons); + key = aChar; + keyX = (int)p.x; + keyY = (int)p.y; +setModifiers: + modifierKeys = 0; + uint32 beMod = Window()->CurrentMessage()->FindInt32("modifiers"); + if(beMod & B_SHIFT_KEY) + modifierKeys |= GLUT_ACTIVE_SHIFT; + if(beMod & B_CONTROL_KEY) + modifierKeys |= GLUT_ACTIVE_CTRL; + if(beMod & B_OPTION_KEY) { + // since the window traps B_COMMAND_KEY, we'll have to settle + // for the option key.. but we need to get the raw character, + // not the Unicode-enhanced version + key = Window()->CurrentMessage()->FindInt32("raw_char"); + modifierKeys |= GLUT_ACTIVE_ALT; + } + gBlock.NewEvent(); + } +} + +/*********************************************************** + * CLASS: GlutWindow + * + * FUNCTION: MouseDown + * + * DESCRIPTION: handles mouse and menustatus events + ***********************************************************/ +void GlutWindow::MouseDown(BPoint point) +{ + BGLView::MouseDown(point); + MouseCheck(); +} + +/*********************************************************** + * CLASS: GlutWindow + * + * FUNCTION: MouseCheck + * + * DESCRIPTION: checks for button state changes + ***********************************************************/ +void GlutWindow::MouseCheck() +{ + if (mouseEvent) + return; // we already have an outstanding mouse event + + BPoint point; + uint32 newButtons; + GetMouse(&point, &newButtons); + if (m_buttons != newButtons) { + if (newButtons&B_PRIMARY_MOUSE_BUTTON && !(m_buttons&B_PRIMARY_MOUSE_BUTTON)) { + button = GLUT_LEFT_BUTTON; + mouseState = GLUT_DOWN; + } else if (m_buttons&B_PRIMARY_MOUSE_BUTTON && !(newButtons&B_PRIMARY_MOUSE_BUTTON)) { + button = GLUT_LEFT_BUTTON; + mouseState = GLUT_UP; + } else if (newButtons&B_SECONDARY_MOUSE_BUTTON && !(m_buttons&B_SECONDARY_MOUSE_BUTTON)) { + button = GLUT_RIGHT_BUTTON; + mouseState = GLUT_DOWN; + } else if (m_buttons&B_SECONDARY_MOUSE_BUTTON && !(newButtons&B_SECONDARY_MOUSE_BUTTON)) { + button = GLUT_RIGHT_BUTTON; + mouseState = GLUT_UP; + } else if (newButtons&B_TERTIARY_MOUSE_BUTTON && !(m_buttons&B_TERTIARY_MOUSE_BUTTON)) { + button = GLUT_MIDDLE_BUTTON; + mouseState = GLUT_DOWN; + } else if (m_buttons&B_TERTIARY_MOUSE_BUTTON && !(newButtons&B_TERTIARY_MOUSE_BUTTON)) { + button = GLUT_MIDDLE_BUTTON; + mouseState = GLUT_UP; + } + } else { + return; // no change, return + } + m_buttons = newButtons; + + if (mouseState == GLUT_DOWN) { + BWindow *w = Window(); + GlutMenu *m = __glutGetMenuByNum(menu[button]); + if (m) { + if (gState.menuStatus) { + anyevents = statusEvent = true; + menuNumber = menu[button]; + menuStatus = GLUT_MENU_IN_USE; + statusX = (int)point.x; + statusY = (int)point.y; + gBlock.NewEvent(); + } + BRect bounds = w->Frame(); + point.x += bounds.left; + point.y += bounds.top; + GlutPopUp *bmenu = static_cast<GlutPopUp*>(m->CreateBMenu()); // start menu + bmenu->point = point; + bmenu->win = this; + thread_id menu_thread = spawn_thread(MenuThread, "menu thread", B_NORMAL_PRIORITY, bmenu); + resume_thread(menu_thread); + return; + } + } + + if (mouse) { + anyevents = mouseEvent = true; + mouseX = (int)point.x; + mouseY = (int)point.y; + modifierKeys = 0; + uint32 beMod = modifiers(); + if(beMod & B_SHIFT_KEY) + modifierKeys |= GLUT_ACTIVE_SHIFT; + if(beMod & B_CONTROL_KEY) + modifierKeys |= GLUT_ACTIVE_CTRL; + if(beMod & B_OPTION_KEY) { + modifierKeys |= GLUT_ACTIVE_ALT; + } + gBlock.NewEvent(); + } +} + +/*********************************************************** + * CLASS: GlutWindow + * + * FUNCTION: MouseMoved + * + * DESCRIPTION: handles entry, motion, and passive events + ***********************************************************/ +void GlutWindow::MouseMoved(BPoint point, + ulong transit, const BMessage *msg) +{ + BGLView::MouseMoved(point,transit,msg); + + if(transit != B_INSIDE_VIEW) { + if (entry) { + anyevents = entryEvent = true; + gBlock.NewEvent(); + } + if (transit == B_ENTERED_VIEW) { + entryState = GLUT_ENTERED; + MakeFocus(); // make me the current focus + __glutSetCursor(cursor); + } else + entryState = GLUT_LEFT; + } + + MouseCheck(); + if(m_buttons) { + if(motion) { + anyevents = motionEvent = true; + motionX = (int)point.x; + motionY = (int)point.y; + gBlock.NewEvent(); + } + } else { + if(passive) { + anyevents = passiveEvent = true; + passiveX = (int)point.x; + passiveY = (int)point.y; + gBlock.NewEvent(); + } + } +} + +/*********************************************************** + * CLASS: GlutWindow + * + * FUNCTION: FrameResized + * + * DESCRIPTION: handles reshape event + ***********************************************************/ +void GlutWindow::FrameResized(float width, float height) +{ + BGLView::FrameResized(width, height); + if (visState == GLUT_VISIBLE) { + anyevents = reshapeEvent = true; + m_width = (int)(width)+1; + m_height = (int)(height)+1; + gBlock.NewEvent(); + } +} + +/*********************************************************** + * CLASS: GlutWindow + * + * FUNCTION: Draw + * + * DESCRIPTION: handles reshape and display events + ***********************************************************/ +void GlutWindow::Draw(BRect updateRect) +{ + BGLView::Draw(updateRect); + BRect frame = Frame(); + if (m_width != (frame.Width()+1) || m_height != (frame.Height()+1)) { + FrameResized(frame.Width(), frame.Height()); + } + if (visState == GLUT_VISIBLE) { + anyevents = displayEvent = true; + gBlock.NewEvent(); + } +} + +/*********************************************************** + * CLASS: GlutWindow + * + * FUNCTION: Hide + * Show + * + * DESCRIPTION: handles visibility event + ***********************************************************/ +void GlutWindow::Hide() +{ + BGLView::Hide(); + if (visibility) { + anyevents = visEvent = true; + visState = GLUT_NOT_VISIBLE; + displayEvent = false; // display callbacks not allowed when hidden + gBlock.NewEvent(); + } +} + +void GlutWindow::Show() +{ + BGLView::Show(); + if (visibility) { + anyevents = visEvent = true; + visState = GLUT_VISIBLE; + gBlock.NewEvent(); + } +} + +/*********************************************************** + * CLASS: GlutWindow + * + * FUNCTION: Pulse + * + * DESCRIPTION: handles mouse up event (MouseUp is broken) + ***********************************************************/ +void GlutWindow::Pulse() +{ + BGLView::Pulse(); + if (m_buttons) { // if there are buttons pressed + MouseCheck(); + } +} + +/*********************************************************** + * CLASS: GlutWindow + * + * FUNCTION: ErrorCallback + * + * DESCRIPTION: handles GL error messages + ***********************************************************/ +void GlutWindow::ErrorCallback(GLenum errorCode) { + __glutWarning("GL error: %s", gluErrorString(errorCode)); +} + +/*********************************************************** + * CLASS: GlutWindow + * + * FUNCTION: MenuThread + * + * DESCRIPTION: a new thread to launch popup menu, wait + * wait for response, then clean up afterwards and + * send appropriate messages + ***********************************************************/ +long GlutWindow::MenuThread(void *m) { + GlutPopUp *bmenu = static_cast<GlutPopUp*>(m); + GlutWindow *win = bmenu->win; // my window + GlutBMenuItem *result = (GlutBMenuItem*)bmenu->Go(bmenu->point); + win->Window()->Lock(); + win->anyevents = win->statusEvent = true; + win->menuStatus = GLUT_MENU_NOT_IN_USE; + win->menuNumber = bmenu->menu; + BPoint cursor; + uint32 buttons; + win->GetMouse(&cursor, &buttons); + win->statusX = (int)cursor.x; + win->statusY = (int)cursor.y; + if(result && result->menu) { + win->menuEvent = true; + win->menuNumber = result->menu; // in case it was a submenu + win->menuValue = result->value; + } + win->Window()->Unlock(); + gBlock.NewEvent(); + delete bmenu; + return 0; +} |