separated DOS GLUT from GLX GLUT.

added a few FreeGLUT specific functions.

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 0000000000..36c3adc3ff
--- /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--;
+}