X-Git-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=hacks%2Fglx%2Fstairs.c;h=49a1542fc81509a26867916824757714ea846c0d;hb=39809ded547bdbb08207d3e514950425215b4410;hp=0bd61c2e62ac0ee19bfe7372e1e2cacf52fe83d8;hpb=f8cf5ac7b2f53510f80a0eaf286a25298be17bfe;p=xscreensaver

diff --git a/hacks/glx/stairs.c b/hacks/glx/stairs.c
index 0bd61c2e..49a1542f 100644
--- a/hacks/glx/stairs.c
+++ b/hacks/glx/stairs.c
@@ -59,7 +59,7 @@ static const char sccsid[] = "@(#)stairs.c	4.07 97/11/24 xlockmore";
 # define DEFAULTS			"*delay:		20000   \n" \
 							"*showFPS:      False   \n"
 
-# define refresh_stairs 0
+# define release_stairs 0
 # include "xlockmore.h"		/* from the xscreensaver distribution */
 #else /* !STANDALONE */
 # include "xlock.h"			/* from the xlockmore distribution */
@@ -83,8 +83,8 @@ ENTRYPOINT ModeSpecOpt stairs_opts =
 
 #ifdef USE_MODULES
 ModStruct   stairs_description =
-{"stairs", "init_stairs", "draw_stairs", "release_stairs",
- "draw_stairs", "change_stairs", NULL, &stairs_opts,
+{"stairs", "init_stairs", "draw_stairs", NULL,
+ "draw_stairs", "change_stairs", "free_stairs", &stairs_opts,
  1000, 1, 1, 1, 4, 1.0, "",
  "Shows Infinite Stairs, an Escher-like scene", 0, NULL};
 
@@ -320,8 +320,14 @@ ENTRYPOINT void
 reshape_stairs (ModeInfo * mi, int width, int height)
 {
 	stairsstruct *sp = &stairs[MI_SCREEN(mi)];
+    int y = 0;
 
-	glViewport(0, 0, sp->WindW = (GLint) width, sp->WindH = (GLint) height);
+    if (width > height * 5) {   /* tiny window: show middle */
+      height = width;
+      y = -height/2;
+    }
+
+	glViewport(0, y, sp->WindW = (GLint) width, sp->WindH = (GLint) height);
 	glMatrixMode(GL_PROJECTION);
 	glLoadIdentity();
 	glFrustum(-1.0, 1.0, -1.0, 1.0, 5.0, 15.0);
@@ -343,47 +349,18 @@ stairs_handle_event (ModeInfo *mi, XEvent *event)
 {
   stairsstruct *sp = &stairs[MI_SCREEN(mi)];
 
-  if (event->xany.type == ButtonPress &&
-      event->xbutton.button == Button1)
-    {
-      sp->button_down_p = True;
-      gltrackball_start (sp->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)
-    {
-      sp->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 (sp->trackball, event->xbutton.button, 10,
-                              !!event->xbutton.state);
-      return True;
-    }
-  else if (event->xany.type == MotionNotify &&
-           sp->button_down_p)
-    {
-      gltrackball_track (sp->trackball,
-                         event->xmotion.x, event->xmotion.y,
-                         MI_WIDTH (mi), MI_HEIGHT (mi));
-      return True;
-    }
+  if (gltrackball_event_handler (event, sp->trackball,
+                                 MI_WIDTH (mi), MI_HEIGHT (mi),
+                                 &sp->button_down_p))
+    return True;
   else if (event->xany.type == KeyPress)
     {
       KeySym keysym;
       char c = 0;
       XLookupString (&event->xkey, &c, 1, &keysym, 0);
-      if (c == ' ')
+      if (c == ' ' || c == '\t')
         {
-          gltrackball_reset (sp->trackball);
+          gltrackball_reset (sp->trackball, 0, 0);
           return True;
         }
     }
@@ -466,11 +443,7 @@ init_stairs (ModeInfo * mi)
 	int         screen = MI_SCREEN(mi);
 	stairsstruct *sp;
 
-	if (stairs == NULL) {
-		if ((stairs = (stairsstruct *) calloc(MI_NUM_SCREENS(mi),
-					     sizeof (stairsstruct))) == NULL)
-			return;
-	}
+	MI_INIT (mi, stairs);
 	sp = &stairs[screen];
 
 	sp->step = 0.0;
@@ -489,13 +462,14 @@ init_stairs (ModeInfo * mi)
 		MI_CLEARWINDOW(mi);
 	}
 
-    sp->trackball = gltrackball_init ();
+    sp->trackball = gltrackball_init (False);
 }
 
 ENTRYPOINT void
 draw_stairs (ModeInfo * mi)
 {
 	stairsstruct *sp = &stairs[MI_SCREEN(mi)];
+    GLfloat rot = current_device_rotation();
 
 	Display    *display = MI_DISPLAY(mi);
 	Window      window = MI_WINDOW(mi);
@@ -509,6 +483,8 @@ draw_stairs (ModeInfo * mi)
 
 	glPushMatrix();
 
+    glRotatef(rot, 0, 0, 1);
+
 	glTranslatef(0.0, 0.0, -10.0);
 
 	if (!MI_IS_ICONIC(mi)) {
@@ -517,8 +493,15 @@ draw_stairs (ModeInfo * mi)
 		glScalef(Scale4Iconic * sp->WindH / sp->WindW, Scale4Iconic, Scale4Iconic);
 	}
 
+# ifdef HAVE_MOBILE	/* Keep it the same relative size when rotated. */
+  {
+    GLfloat h = MI_HEIGHT(mi) / (GLfloat) MI_WIDTH(mi);
+    if (rot != 0 && rot != 180 && rot != -180)
+      glScalef (1/h, 1/h, 1/h);
+  }
+# endif
+
     gltrackball_rotate (sp->trackball);
-    glRotatef(current_device_rotation(), 0, 0, 1);
 
     glTranslatef(0, 0.5, 0);
 	glRotatef(44.5, 1, 0, 0);
@@ -598,20 +581,12 @@ change_stairs (ModeInfo * mi)
 #endif /* !STANDALONE */
 
 ENTRYPOINT void
-release_stairs (ModeInfo * mi)
+free_stairs (ModeInfo * mi)
 {
-	if (stairs != NULL) {
-      int i;
-      for (i = 0; i < MI_NUM_SCREENS(mi); i++) {
-        stairsstruct *sp = &stairs[i];
-        if (glIsList(sp->objects)) {
-          glDeleteLists(sp->objects, 1);
-        }
-      }
-      free(stairs);
-      stairs = NULL;
+	stairsstruct *sp = &stairs[MI_SCREEN(mi)];
+	if (glIsList(sp->objects)) {
+		glDeleteLists(sp->objects, 1);
 	}
-	FreeAllGL(mi);
 }
 
 XSCREENSAVER_MODULE ("Stairs", stairs)