Try out scalar picture sizes

experimental/nanomsg/picture_demo.cpp

 #include "nanomsg/src/nn.h"
 #include "nanomsg/src/pipeline.h"
 #include "nanomsg/src/reqrep.h"
 
 #include "SkCanvas.h"
 #include "SkCommandLineFlags.h"
 #include "SkData.h"
 #include "SkForceLinking.h"
 #include "SkGraphics.h"
 #include "SkImageEncoder.h"
@@ skipping 64 matching lines @@
     // Read the .skp.
     SkAutoTUnref<const SkData> skp(SkData::NewFromFileName(skpPath));
     if (!skp) {
         SkDebugf("Couldn't read %s\n", skpPath);
         exit(1);
     }
     SkMemoryStream stream(skp->data(), skp->size());
     SkAutoTUnref<SkPicture> picture(SkPicture::CreateFromStream(&stream));
 
     PictureHeader header;
-    SkRandom rand(picture->width() * picture->height());
-    SkScalar r = rand.nextRangeScalar(0, picture->width()),
-             b = rand.nextRangeScalar(0, picture->height()),
+    SkRandom rand(picture->cullRect().width() * picture->cullRect().height());
+    SkScalar r = rand.nextRangeScalar(0, picture->cullRect().width()),
+             b = rand.nextRangeScalar(0, picture->cullRect().height()),
              l = rand.nextRangeScalar(0, r),
              t = rand.nextRangeScalar(0, b);
     header.clip.setLTRB(l,t,r,b);
     header.matrix.setTranslate(-l, -t);
     header.matrix.postRotate(rand.nextRangeScalar(-25, 25));
     header.alpha = 0x7F;
 
     //Clients use NN_REQ (request) type sockets.
     int socket = nn_socket(AF_SP, NN_REQ);
 
@@ skipping 100 matching lines @@
 
         server(FLAGS_data[0], FLAGS_control[0], &canvas);
         canvas.flush();
 
         SkImageEncoder::EncodeFile(FLAGS_png[0], bitmap, SkImageEncoder::kPNG_Type, 100);
         SkDebugf("Wrote %s.\n", FLAGS_png[0]);
     }
 
     return 0;
 }