From 4ef6544ecca1803b48985882b1e0e769257b1c93 Mon Sep 17 00:00:00 2001
From: Marco Pesenti Gritti <marcopg@litl.com>
Date: Fri, 13 Mar 2009 20:59:34 +0000
Subject: Add a browser plugin implementation.

---
(limited to 'browser-plugin/plugin.cpp')

diff --git a/browser-plugin/plugin.cpp b/browser-plugin/plugin.cpp
new file mode 100644
index 0000000..40db488
--- /dev/null
+++ b/browser-plugin/plugin.cpp
@@ -0,0 +1,179 @@
+/* this file is part of evince, a gnome document viewer
+ *
+ *  Copyright (C) 2009 litl, LLC
+ *
+ * Evince 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Evince 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include "evince-view.h"
+#include "plugin.h"
+#include "scriptable.h"
+
+Plugin::Plugin (NPP instance)
+{
+    mInstance = instance;
+    mWindow = 0;
+    mScriptableObject = NULL;
+
+    mScrolledWindow = gtk_scrolled_window_new (NULL, NULL);
+
+    mView = ev_view_new ();
+    g_signal_connect (G_OBJECT (mView),
+                      "notify::sizing-mode",
+                      G_CALLBACK (Plugin::SizingModeCallback),
+                      reinterpret_cast<void*>(this));
+
+    /* FIXME should be set automatically in EvView. It seem to be currently
+       used only to calculate the minimum and maximux allowed zoom level. */
+    ev_view_set_screen_dpi (EV_VIEW(mView), 96);
+
+    gtk_container_add (GTK_CONTAINER(mScrolledWindow), mView);
+    gtk_widget_show (mView);
+
+    UpdateSizingMode ();
+}
+
+Plugin::~Plugin ()
+{
+}
+
+void
+Plugin::ZoomIn ()
+{
+    ev_view_set_sizing_mode (EV_VIEW (mView), EV_SIZING_FREE);
+    ev_view_zoom_in (EV_VIEW (mView));
+}
+
+void
+Plugin::ZoomOut ()
+{
+    ev_view_set_sizing_mode (EV_VIEW (mView), EV_SIZING_FREE);
+    ev_view_zoom_out (EV_VIEW (mView));
+}
+
+void
+Plugin::FindNext (const char *text)
+{
+}
+
+void
+Plugin::FindPrevious (const char *text)
+{
+}
+
+void
+Plugin::SetWindow (GdkNativeWindow window)
+{
+    if (mWindow != 0) {
+        return;
+    }
+
+    mWindow = window;
+
+    GtkWidget *plug = gtk_plug_new (window);
+    gtk_container_add (GTK_CONTAINER (plug), mScrolledWindow);
+    gtk_widget_show (mScrolledWindow);
+
+    gtk_widget_show (plug);
+}
+
+void
+Plugin::Load (const char *fname)
+{
+    GError *error = NULL;
+
+    GFile *file = g_file_new_for_path (fname);
+    char *uri = g_file_get_uri (file);
+    g_object_unref (file);
+
+    /* FIXME display loading error in the UI */
+
+    EvDocument *document = ev_document_factory_get_document (uri, &error);
+    if (error) {
+        g_warning ("Cannot create document for %s", uri);
+        g_error_free (error);
+        return;
+    }
+
+    ev_view_set_document (EV_VIEW (mView), document);
+
+    ev_document_load (document, uri, &error);
+    if (error) {
+        g_warning ("Cannot load %s", uri);
+        g_error_free (error);
+        return;
+    }
+
+    g_free (uri);
+}
+
+NPObject * 
+Plugin::GetScriptableNPObject () 
+{
+    if (!mScriptableObject) {
+        mScriptableObject = NPN_CreateObject (
+                    mInstance, GET_NPOBJECT_CLASS (ScriptablePluginObject));
+    }
+
+    if (mScriptableObject) {
+        NPN_RetainObject (mScriptableObject);
+    }
+
+    return mScriptableObject;
+}
+
+void
+Plugin::UpdateSizingMode ()
+{
+    EvSizingMode sizingMode;
+
+    g_signal_handlers_disconnect_by_func (
+        mView, (gpointer)ev_view_update_view_size, mScrolledWindow);
+
+    g_object_get (G_OBJECT (mView),
+                  "sizing-mode", &sizingMode,
+                  NULL);
+
+    if (sizingMode != EV_SIZING_FREE)
+        ev_view_update_view_size (EV_VIEW (mView),
+                                  GTK_SCROLLED_WINDOW (mScrolledWindow));
+
+    switch (sizingMode) {
+        case EV_SIZING_BEST_FIT:
+        case EV_SIZING_FIT_WIDTH:
+            g_object_set (G_OBJECT (mScrolledWindow),
+                            "hscrollbar-policy", GTK_POLICY_NEVER,
+                            "vscrollbar-policy", GTK_POLICY_ALWAYS,
+                            NULL);
+            g_signal_connect (mView, "zoom_invalid",
+                                G_CALLBACK (ev_view_update_view_size),
+                                mScrolledWindow);
+            break;
+
+        case EV_SIZING_FREE:
+            g_object_set (G_OBJECT (mScrolledWindow),
+                            "hscrollbar-policy", GTK_POLICY_AUTOMATIC,
+                            "vscrollbar-policy", GTK_POLICY_AUTOMATIC,
+                            NULL);
+            break;
+    }
+}
+
+void
+Plugin::SizingModeCallback (EvView *view, GParamSpec *pspec, gpointer data)
+{
+    Plugin *plugin = reinterpret_cast<Plugin*> (data);
+    plugin->UpdateSizingMode ();
+}
--
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