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-rw-r--r--src/glut/dos/loop.c245
1 files changed, 245 insertions, 0 deletions
diff --git a/src/glut/dos/loop.c b/src/glut/dos/loop.c
new file mode 100644
index 000000000..36c3adc3f
--- /dev/null
+++ b/src/glut/dos/loop.c
@@ -0,0 +1,245 @@
+/*
+ * DOS/DJGPP Mesa Utility Toolkit
+ * Version: 1.0
+ *
+ * Copyright (C) 2005 Daniel Borca All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * DANIEL BORCA BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+#include <string.h>
+
+#include <GL/glut.h>
+#include "GL/dmesa.h"
+
+#include "PC_HW/pc_hw.h"
+#include "internal.h"
+
+
+static int looping = 0;
+
+
+#define DO_REDISPLAY(w, ccin, ccout) \
+ do { \
+ if (w->redisplay && w->display) { \
+ int rv = GL_TRUE; \
+ \
+ idle = GL_FALSE; \
+ w->redisplay = GL_FALSE; \
+ \
+ /* test IN condition (whether we need to `MakeCurrent') */\
+ if (ccin) { \
+ rv = DMesaMakeCurrent(w->context, w->buffer); \
+ } \
+ \
+ /* do the display only if `MakeCurrent' didn't failed */ \
+ if (rv) { \
+ if (w->show_mouse && !(_glut_default.mode & GLUT_DOUBLE)) {\
+ /* XXX scare mouse */ \
+ w->display(); \
+ /* XXX unscare mouse */ \
+ } else { \
+ w->display(); \
+ } \
+ \
+ /* update OUT condition */ \
+ ccout; \
+ } \
+ } \
+ } while (0)
+
+
+void APIENTRY
+glutMainLoopEvent (void)
+{
+ int i, n;
+ GLUTwindow *w;
+ GLboolean idle;
+ static int old_mouse_x = 0;
+ static int old_mouse_y = 0;
+ static int old_mouse_b = 0;
+
+ static GLboolean virgin = GL_TRUE;
+ if (virgin) {
+ pc_install_keyb();
+ _glut_mouse_init();
+
+ for (i = 0; i < MAX_WINDOWS; i++) {
+ w = _glut_windows[i];
+ if (w != NULL) {
+ glutSetWindow(w->num);
+ glutPostRedisplay();
+ if (w->reshape) {
+ w->reshape(w->width, w->height);
+ }
+ if (w->visibility) {
+ w->visibility(GLUT_VISIBLE);
+ }
+ }
+ }
+ virgin = GL_FALSE;
+ }
+
+ idle = GL_TRUE;
+
+ n = 0;
+ for (i = 0; i < MAX_WINDOWS; i++) {
+ w = _glut_windows[i];
+ if ((w != NULL) && (w != _glut_current)) {
+ /* 1) redisplay `w'
+ * 2) `MakeCurrent' always
+ * 3) update number of non-default windows
+ */
+ DO_REDISPLAY(w, GL_TRUE, n++);
+ }
+ }
+ /* 1) redisplay `_glut_current'
+ * 2) `MakeCurrent' only if we previously did non-default windows
+ * 3) don't update anything
+ */
+ DO_REDISPLAY(_glut_current, n, n);
+
+ if (_glut_mouse) {
+ int mouse_x;
+ int mouse_y;
+ int mouse_z;
+ int mouse_b;
+
+ /* query mouse */
+ mouse_b = pc_query_mouse(&mouse_x, &mouse_y, &mouse_z);
+
+ /* relative to window coordinates */
+ _glut_mouse_x = mouse_x - _glut_current->xpos;
+ _glut_mouse_y = mouse_y - _glut_current->ypos;
+
+ /* mouse was moved? */
+ if ((mouse_x != old_mouse_x) || (mouse_y != old_mouse_y)) {
+ idle = GL_FALSE;
+ old_mouse_x = mouse_x;
+ old_mouse_y = mouse_y;
+
+ if (mouse_b) {
+ /* any button pressed */
+ if (_glut_current->motion) {
+ _glut_current->motion(_glut_mouse_x, _glut_mouse_y);
+ }
+ } else {
+ /* no button pressed */
+ if (_glut_current->passive) {
+ _glut_current->passive(_glut_mouse_x, _glut_mouse_y);
+ }
+ }
+ }
+
+ /* button state changed? */
+ if (mouse_b != old_mouse_b) {
+ GLUTmouseCB mouse_func;
+
+ if ((mouse_func = _glut_current->mouse)) {
+ if ((old_mouse_b & 1) && !(mouse_b & 1))
+ mouse_func(GLUT_LEFT_BUTTON, GLUT_UP, _glut_mouse_x, _glut_mouse_y);
+ else if (!(old_mouse_b & 1) && (mouse_b & 1))
+ mouse_func(GLUT_LEFT_BUTTON, GLUT_DOWN, _glut_mouse_x, _glut_mouse_y);
+
+ if ((old_mouse_b & 2) && !(mouse_b & 2))
+ mouse_func(GLUT_RIGHT_BUTTON, GLUT_UP, _glut_mouse_x, _glut_mouse_y);
+ else if (!(old_mouse_b & 2) && (mouse_b & 2))
+ mouse_func(GLUT_RIGHT_BUTTON, GLUT_DOWN, _glut_mouse_x, _glut_mouse_y);
+
+ if ((old_mouse_b & 4) && !(mouse_b & 4))
+ mouse_func(GLUT_MIDDLE_BUTTON, GLUT_UP, _glut_mouse_x, _glut_mouse_y);
+ else if (!(old_mouse_b & 3) && (mouse_b & 4))
+ mouse_func(GLUT_MIDDLE_BUTTON, GLUT_DOWN, _glut_mouse_x, _glut_mouse_y);
+ }
+
+ idle = GL_FALSE;
+ old_mouse_b = mouse_b;
+ }
+ }
+
+ if (pc_keypressed()) {
+ int key;
+ int glut_key;
+
+ idle = GL_FALSE;
+ key = pc_readkey();
+
+ switch (key>>16) {
+ case KEY_F1: glut_key = GLUT_KEY_F1; goto special;
+ case KEY_F2: glut_key = GLUT_KEY_F2; goto special;
+ case KEY_F3: glut_key = GLUT_KEY_F3; goto special;
+ case KEY_F4: glut_key = GLUT_KEY_F4; goto special;
+ case KEY_F5: glut_key = GLUT_KEY_F5; goto special;
+ case KEY_F6: glut_key = GLUT_KEY_F6; goto special;
+ case KEY_F7: glut_key = GLUT_KEY_F7; goto special;
+ case KEY_F8: glut_key = GLUT_KEY_F8; goto special;
+ case KEY_F9: glut_key = GLUT_KEY_F9; goto special;
+ case KEY_F10: glut_key = GLUT_KEY_F10; goto special;
+ case KEY_F11: glut_key = GLUT_KEY_F11; goto special;
+ case KEY_F12: glut_key = GLUT_KEY_F12; goto special;
+ case KEY_LEFT: glut_key = GLUT_KEY_LEFT; goto special;
+ case KEY_UP: glut_key = GLUT_KEY_UP; goto special;
+ case KEY_RIGHT: glut_key = GLUT_KEY_RIGHT; goto special;
+ case KEY_DOWN: glut_key = GLUT_KEY_DOWN; goto special;
+ case KEY_PGUP: glut_key = GLUT_KEY_PAGE_UP; goto special;
+ case KEY_PGDN: glut_key = GLUT_KEY_PAGE_DOWN; goto special;
+ case KEY_HOME: glut_key = GLUT_KEY_HOME; goto special;
+ case KEY_END: glut_key = GLUT_KEY_END; goto special;
+ case KEY_INSERT: glut_key = GLUT_KEY_INSERT; goto special;
+ special:
+ if (_glut_current->special) {
+ _glut_current->special(glut_key, _glut_mouse_x, _glut_mouse_y);
+ }
+ break;
+ default:
+ if (_glut_current->keyboard) {
+ _glut_current->keyboard(key & 0xFF, _glut_mouse_x, _glut_mouse_y);
+ }
+ }
+ }
+
+ if (idle && _glut_idle_func)
+ _glut_idle_func();
+
+ for (i = 0; i < MAX_TIMER_CB; i++) {
+ int time = glutGet(GLUT_ELAPSED_TIME);
+ GLUTSShotCB *cb = &_glut_timer_cb[i];
+ if (cb->func && (time >= cb->time)) {
+ cb->func(cb->value);
+ cb->func = NULL;
+ }
+ }
+}
+
+
+void APIENTRY
+glutMainLoop (void)
+{
+ looping++;
+ while (looping) {
+ glutMainLoopEvent();
+ }
+}
+
+
+void APIENTRY
+glutLeaveMainLoop (void)
+{
+ looping--;
+}
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