From http://www.jwz.org/xscreensaver/xscreensaver-5.35.tar.gz

[xscreensaver] / hacks / glx / topblock.c

diff --git a/hacks/glx/topblock.c b/hacks/glx/topblock.c
index 008882d3642c0b822cfbbcf9a7850163425f393d..eed2fd54f775fa0522bbb19a2fcf54ed88613b02 100644 (file)
--- a/hacks/glx/topblock.c
+++ b/hacks/glx/topblock.c
@@ -47,7 +47,7 @@ History
 
 #ifdef USE_GL /* whole file */
 
-#ifndef HAVE_COCOA
+#ifndef HAVE_JWXYZ
 # include <GL/glu.h>
 #endif
 
@@ -72,22 +72,22 @@ typedef struct
 } topBlockSTATE;
 
 /* parameter vars */
-Bool override;
-Bool rotate;
-Bool follow;
-Bool drawCarpet;
-Bool drawBlob;
-Bool drawNipples;
-GLfloat rotateSpeed;
-GLfloat camX;
-GLfloat camY;
-GLfloat camZ;
-GLfloat dropSpeed;
-int maxFalling;
-int maxColors;
-int size;
-int spawn;
-int resolution;
+static Bool override;
+static Bool rotate;
+static Bool follow;
+static Bool drawCarpet;
+static Bool drawBlob;
+static Bool drawNipples;
+static GLfloat rotateSpeed;
+static GLfloat camX;
+static GLfloat camY;
+static GLfloat camZ;
+static GLfloat dropSpeed;
+static int maxFalling;
+static int maxColors;
+static int size;
+static int spawn;
+static int resolution;
 
 static XrmOptionDescRec opts[] = {
   { "-size",        ".size",        XrmoptionSepArg, 0 },
@@ -147,7 +147,7 @@ static argtype vars[] = {
 
 static topBlockSTATE *tbs = NULL;
 
-ModeSpecOpt topBlock_opts = {countof(opts), opts, countof(vars), vars, NULL};
+static ModeSpecOpt topBlock_opts = {countof(opts), opts, countof(vars), vars, NULL};
 
 /* Window management, etc */
 ENTRYPOINT void
@@ -279,7 +279,7 @@ init_topBlock (ModeInfo *mi)
     tb->eyeY=20;
     tb->eyeZ=0;
   }
-  tb->trackball = gltrackball_init ();
+  tb->trackball = gltrackball_init (False);
 }
 
 /* provides the per frame entertainment */
@@ -319,17 +319,23 @@ draw_topBlock (ModeInfo *mi)
                followBlock(mi);
        }
 
-        glScalef (-1, 1, 1);
-        glTranslatef (0, 0, -10);
-        glRotatef(-current_device_rotation(), 0, 0, 1);
+        /* Rotate the scene around a point that's a little higher up. */
+        glTranslatef (0, 0, -5);
         gltrackball_rotate (tb->trackball);
-        glRotatef(current_device_rotation(), 0, 0, 1);
-        glTranslatef (0, 0, 10);
-        glScalef (-1, 1, 1);
+        glTranslatef (0, 0, 5);
 
        /* rotate the world */
        glRotatef(tb->rotation, 0.0, 0.0, 1.0);         
 
+# ifdef HAVE_MOBILE    /* Keep it the same relative size when rotated. */
+        {
+          GLfloat h = MI_HEIGHT(mi) / (GLfloat) MI_WIDTH(mi);
+          int o = (int) current_device_rotation();
+          if (o != 0 && o != 180 && o != -180)
+            glScalef (1/h, 1/h, 1/h);
+        }
+# endif
+
        llCurrent = tb->blockNodeRoot;
        if (drawCarpet) {
                /* center carpet */
@@ -806,7 +812,12 @@ ENTRYPOINT Bool
 topBlock_handle_event (ModeInfo *mi, XEvent *event)
 {
   topBlockSTATE *tb = &tbs[MI_SCREEN(mi)];
-       if (event->xany.type == KeyPress)    {
+
+  if (gltrackball_event_handler (event, tb->trackball,
+                                 MI_WIDTH (mi), MI_HEIGHT (mi),
+                                 &tb->button_down_p))
+    return True;
+  else if (event->xany.type == KeyPress) {
     KeySym keysym;
     char c = 0;
     XLookupString (&event->xkey, &c, 1, &keysym, 0);
@@ -851,40 +862,8 @@ topBlock_handle_event (ModeInfo *mi, XEvent *event)
                        return True;
                }
        }
-  if (event->xany.type == ButtonPress &&
-      event->xbutton.button == Button1)
-    {
-      tb->button_down_p = True;
-      gltrackball_start (tb->trackball,
-                         event->xbutton.x, event->xbutton.y,
-                         MI_WIDTH (mi), MI_HEIGHT (mi));
-      return True;
-    }
-  else if (event->xany.type == ButtonRelease &&
-           event->xbutton.button == Button1)
-    {
-      tb->button_down_p = False;
-      return True;
-    }
-  else if (event->xany.type == ButtonPress &&
-           (event->xbutton.button == Button4 ||
-            event->xbutton.button == Button5 ||
-            event->xbutton.button == Button6 ||
-            event->xbutton.button == Button7))
-    {
-      gltrackball_mousewheel (tb->trackball, event->xbutton.button, 10,
-                              !!event->xbutton.state);
-      return True;
-    }
-  else if (event->xany.type == MotionNotify &&
-           tb->button_down_p)
-    {
-      gltrackball_track (tb->trackball,
-                         event->xmotion.x, event->xmotion.y,
-                         MI_WIDTH (mi), MI_HEIGHT (mi));
-      return True;
-    }
-       return False;
+
+  return False;
 }
 
 /* this is tha main change for v5 compatability and acompanying ENTRYPOINTS */