From http://www.jwz.org/xscreensaver/xscreensaver-5.38.tar.gz

[xscreensaver] / hacks / glx / providence.c

diff --git a/hacks/glx/providence.c b/hacks/glx/providence.c
index 2d49bb4a956b635b8fb58de7b1b3b9751a8177a2..d628845e6d567f17f7fcb7ca1f8283a0758a6645 100644 (file)
--- a/hacks/glx/providence.c
+++ b/hacks/glx/providence.c
@@ -19,7 +19,7 @@
                            "*showFPS: False   \n" \
                            "*wireframe: False \n"
 
-# define refresh_providence 0
+# define free_providence 0
 # define release_providence 0
 #include "xlockmore.h"
 #else
@@ -596,10 +596,17 @@ static void draw_providence_strip(ModeInfo *mi)
 
 ENTRYPOINT void reshape_providence(ModeInfo * mi, int width, int height) 
 {
-  double h = (GLfloat) height / (GLfloat) width;  
   providencestruct *mp = &providence[MI_SCREEN(mi)];
+  double h = (GLfloat) height / (GLfloat) width;  
+  int y = 0;
+
+  if (width > height * 5) {   /* tiny window: show middle */
+    height = width * 3;
+    y = -height/2;
+    h = height / (GLfloat) width;
+  }
 
-  glViewport(0, 0, mp->WindW = (GLint) width, mp->WindH = (GLint) height);
+  glViewport(0, y, mp->WindW = (GLint) width, mp->WindH = (GLint) height);
   glMatrixMode(GL_PROJECTION);
   glLoadIdentity();
 
@@ -660,7 +667,7 @@ ENTRYPOINT void init_providence(ModeInfo *mi)
 {
   providencestruct *mp;
   
-  MI_INIT(mi, providence, NULL);
+  MI_INIT(mi, providence);
   mp = &providence[MI_SCREEN(mi)];
   mp->trackball = gltrackball_init (False);