From http://www.jwz.org/xscreensaver/xscreensaver-5.37.tar.gz

[xscreensaver] / hacks / glx / photopile.c

diff --git a/hacks/glx/photopile.c b/hacks/glx/photopile.c
index 671ca13843923dfa80875fdc2dde0ea474ab38d0..0f6312febf6a96b74a288a0b39f4dd5012e9e80f 100644 (file)
--- a/hacks/glx/photopile.c
+++ b/hacks/glx/photopile.c
@@ -1,4 +1,4 @@
-/* photopile, Copyright (c) 2008-2012 Jens Kilian <jjk@acm.org>
+/* photopile, Copyright (c) 2008-2015 Jens Kilian <jjk@acm.org>
  * Based on carousel, Copyright (c) 2005-2008 Jamie Zawinski <jwz@jwz.org>
  * Loads a sequence of images and shuffles them into a pile.
  *
@@ -11,7 +11,12 @@
  * implied warranty.
  */
 
-#define DEF_FONT "-*-helvetica-bold-r-normal-*-*-480-*-*-*-*-*-*"
+#if defined(HAVE_COCOA) || defined(HAVE_ANDROID)
+# define DEF_FONT "OCR A Std 48, Lucida Console 48, Monaco 48"
+#else
+# define DEF_FONT "-*-helvetica-bold-r-normal-*-*-480-*-*-*-*-*-*"
+#endif
+
 #define DEFAULTS  "*count:           7         \n" \
                   "*delay:           10000     \n" \
                   "*wireframe:       False     \n" \
@@ -21,7 +26,8 @@
                   "*font:          " DEF_FONT "\n" \
                   "*desktopGrabber:  xscreensaver-getimage -no-desktop %s\n" \
                   "*grabDesktopImages:   False \n" \
-                  "*chooseRandomImages:  True  \n"
+                  "*chooseRandomImages:  True  \n" \
+                 "*suppressRotationAnimation: True\n" \
 
 # define refresh_photopile 0
 # define release_photopile 0
@@ -30,7 +36,7 @@
 #undef countof
 #define countof(x) (sizeof((x))/sizeof((*x)))
 
-#ifndef HAVE_COCOA
+#ifndef HAVE_JWXYZ
 # include <X11/Intrinsic.h>     /* for XrmDatabase in -debug mode */
 #endif
 #include <math.h>
@@ -47,7 +53,7 @@
 # define DEF_SPEED          "1.0"
 # define DEF_DURATION       "5"
 # define DEF_MIPMAP         "True"
-# define DEF_TITLES         "False"
+# define DEF_TITLES         "True"
 # define DEF_POLAROID       "True"
 # define DEF_CLIP           "True"
 # define DEF_SHADOWS        "True"
@@ -353,7 +359,12 @@ loading_msg (ModeInfo *mi)
   if (wire) return;
 
   if (ss->loading_sw == 0)    /* only do this once */
-    ss->loading_sw = texture_string_width (ss->texfont, text, &ss->loading_sh);
+    {
+      XCharStruct e;
+      texture_string_metrics (ss->texfont, text, &e, 0, 0);
+      ss->loading_sw = e.width;
+      ss->loading_sh = e.ascent + e.descent;
+    }
 
   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 
@@ -428,6 +439,15 @@ reshape_photopile (ModeInfo *mi, int width, int height)
   glLoadIdentity();
   glOrtho(0, MI_WIDTH(mi), 0, MI_HEIGHT(mi), -1, 1);
 
+# 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, h, 1);
+  }
+# endif
+
   glClear(GL_COLOR_BUFFER_BIT);
 }
 
@@ -437,7 +457,7 @@ reshape_photopile (ModeInfo *mi, int width, int height)
 static void
 hack_resources (Display *dpy)
 {
-# ifndef HAVE_COCOA
+# ifndef HAVE_JWXYZ
   char *res = "desktopGrabber";
   char *val = get_string_resource (dpy, res, "DesktopGrabber");
   char buf1[255];
@@ -449,7 +469,7 @@ hack_resources (Display *dpy)
   value.addr = buf2;
   value.size = strlen(buf2);
   XrmPutResource (&db, buf1, "String", &value);
-# endif /* !HAVE_COCOA */
+# endif /* !HAVE_JWXYZ */
 }
 
 
@@ -460,11 +480,7 @@ init_photopile (ModeInfo *mi)
   photopile_state *ss;
   int wire = MI_IS_WIREFRAME(mi);
 
-  if (sss == NULL) {
-    if ((sss = (photopile_state *)
-         calloc (MI_NUM_SCREENS(mi), sizeof(photopile_state))) == NULL)
-      return;
-  }
+  MI_INIT (mi, sss, NULL);
   ss = &sss[screen];
   ss->mi = mi;
 
@@ -629,20 +645,44 @@ draw_image (ModeInfo *mi, int i, GLfloat t, GLfloat s, GLfloat z)
    */
   if (titles_p)
     {
-      int sw, sh;
+      int sw = 0, sh = 0;
+      int ascent, descent;
+      GLfloat tw = w * 2;
+      GLfloat th = h1 - h;
       GLfloat scale = 1;
       const char *title = frame->title ? frame->title : "(untitled)";
+      XCharStruct e;
+
+      texture_string_metrics (ss->texfont, title, &e, &ascent, &descent);
+      sw = e.width;
+      sh = ascent; /* + descent; */
+
+      /* Scale the text to match the pixel size of the photo */
+      scale *= w / 150.0;
+
+# if defined(HAVE_COCOA)
+      scale /= 2;
+# endif
 
-      /* #### Highly approximate, but doing real clipping is harder... */
-      int max = 35;
-      if (strlen(title) > max)
-        title += strlen(title) - max;
+# if defined(HAVE_MOBILE)
+      scale /= 2;
+# endif
 
-      sw = texture_string_width (ss->texfont, title, &sh);
+      /* Clip characters off the left end of the string until it fits. */
+      if (clip_p || polaroid_p)
+        while (sw * scale > tw && strlen (title) > 10)
+          {
+            title++;
+            texture_string_metrics (ss->texfont, title, &e, &ascent, &descent);
+            sw = e.width;
+          }
 
-      sh *= (polaroid_p ? 2.2 : 1.4);  /* move text down from the photo */
+      if (th <= 0)  /* Non-polaroid */
+        th = -sh * 1.2;
+
+      glTranslatef (-w, -h1, 0);
+      glTranslatef ((tw - sw*scale) / 2, (th - sh*scale) / 2, 0);
 
-      glTranslatef (-sw*scale*0.5, -h - sh*scale, z);
       glScalef (scale, scale, 1);
 
       if (wire || !polaroid_p)
@@ -651,14 +691,16 @@ draw_image (ModeInfo *mi, int i, GLfloat t, GLfloat s, GLfloat z)
         }
       else
         {
-          glColor3f (0, 0, 0);
+          glColor3f (0.5, 0.5, 0.5);
         }
 
       if (!wire)
         {
           glEnable (GL_TEXTURE_2D);
           glEnable (GL_BLEND);
+          glDisable (GL_DEPTH_TEST);
           print_texture_string (ss->texfont, title);
+          glEnable (GL_DEPTH_TEST);
         }
       else
         {
@@ -669,6 +711,7 @@ draw_image (ModeInfo *mi, int i, GLfloat t, GLfloat s, GLfloat z)
           glVertex3f (0,  sh, 0);
           glEnd();
         }
+
     }
 
   glPopMatrix();