classic rt UI !

rtgui/bqentryupdater.cc

@@ -0,0 +1,137 @@
+/*
+ *  This file is part of RawTherapee.
+ *
+ *  Copyright (c) 2004-2010 Gabor Horvath <hgabor@rawtherapee.com>
+ *
+ *  RawTherapee is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ * 
+ *  RawTherapee is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with RawTherapee.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <bqentryupdater.h>
+#include <gtkmm.h>
+#include <guiutils.h>
+
+BatchQueueEntryUpdater batchQueueEntryUpdater;
+
+BatchQueueEntryUpdater::BatchQueueEntryUpdater () 
+    : tostop(false), stopped(true), qMutex(NULL) {
+}
+
+void BatchQueueEntryUpdater::add (guint8* oimg, int ow, int oh, int newh, BQEntryUpdateListener* listener) {
+
+    if (!qMutex)
+        qMutex = new Glib::Mutex ();    
+
+    qMutex->lock ();
+    // look up if an older version is in the queue
+    std::list<Job>::iterator i;
+    for (i=jqueue.begin(); i!=jqueue.end(); i++)
+        if (i->oimg==oimg && i->listener==listener) {
+            i->ow = ow;
+            i->oh = oh;
+            i->newh = newh;
+            i->listener = listener;
+            break;
+        }
+    // not found, create and append new job
+    if (i==jqueue.end ()) {
+        Job j;
+        j.oimg = oimg;
+        j.ow = ow;
+        j.oh = oh;
+        j.newh = newh;
+        j.listener = listener;
+        jqueue.push_back (j);
+    }
+    qMutex->unlock ();
+}
+
+void BatchQueueEntryUpdater::process () {
+
+    if (stopped)
+        #undef THREAD_PRIORITY_NORMAL
+        thread = Glib::Thread::create(sigc::mem_fun(*this, &BatchQueueEntryUpdater::process_), (unsigned long int)0, true, true, Glib::THREAD_PRIORITY_NORMAL);
+}
+
+void BatchQueueEntryUpdater::process_ () { 
+
+    stopped = false;
+    tostop = false;
+
+// TODO: process visible jobs first
+    while (!tostop && !jqueue.empty ()) {
+        qMutex->lock ();
+        Job current = jqueue.front ();
+        jqueue.pop_front ();
+        qMutex->unlock ();
+        if (current.listener) {
+            int neww = current.newh * current.ow / current.oh;
+            guint8* img = new guint8 [current.newh*neww*3];
+            thumbInterp (current.oimg, current.ow, current.oh, img, neww, current.newh);
+            current.listener->updateImage (img, neww, current.newh);
+        }
+    }
+    stopped = true;
+}
+
+void BatchQueueEntryUpdater::stop () {
+
+    if (stopped) {
+        tostop = true; 
+        return; }
+        
+    gdk_threads_leave(); 
+    tostop = true; 
+    Glib::Thread::self()->yield(); 
+    if (!stopped) 
+        thread->join (); 
+    gdk_threads_enter();
+}
+
+void BatchQueueEntryUpdater::removeJobs () {
+
+    if (!qMutex)
+        return;
+
+    qMutex->lock ();
+    while (!jqueue.empty()) 
+        jqueue.pop_front (); 
+    qMutex->unlock ();
+}
+
+void BatchQueueEntryUpdater::removeJobs (BQEntryUpdateListener* listener) {
+
+    if (!qMutex)
+        return;
+
+    qMutex->lock ();
+    bool ready = false;
+    while (!ready) {
+        ready = true;
+        std::list<Job>::iterator i;
+        for (i=jqueue.begin(); i!=jqueue.end(); i++)
+            if (i->listener == listener) {
+                jqueue.erase (i);
+                ready = false;
+                break;
+            }
+    }
+    qMutex->unlock ();
+}
+
+void BatchQueueEntryUpdater::terminate  () { 
+
+    stop (); 
+    removeJobs (); 
+}
+
+