Evince
Evince is a document viewer capable of displaying multiple and single page document formats like PDF and Postscript.
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EvBrowserPlugin.h
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1 /*
2  * Copyright (C) 2014 Igalia S.L.
3  *
4  * Evince is free software; you can redistribute it and/or modify it
5  * under the terms of the GNU General Public License as published by
6  * the Free Software Foundation; either version 2 of the License, or
7  * (at your option) any later version.
8  *
9  * Evince is distributed in the hope that it will be useful, but
10  * WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
17  */
18 
19 #ifndef EvBrowserPlugin_h
20 #define EvBrowserPlugin_h
21 
22 #include <evince-document.h>
23 #include <evince-view.h>
24 #include "EvMemoryUtils.h"
25 #include "npapi.h"
26 #include "npruntime.h"
27 
28 typedef union _XEvent XEvent;
29 struct EvBrowserPluginClass;
30 
31 class EvBrowserPlugin: public NPObject {
32 public:
33  static EvBrowserPlugin* create(NPP);
34 
35  static const char *nameString();
36  static const char *descriptionString();
37 
38  // NPP API
39  NPError initialize(NPMIMEType, uint16_t mode, int16_t argc, char *argn[], char *argv[], NPSavedData *);
40  NPError setWindow(NPWindow *);
41  NPError newStream(NPMIMEType, NPStream *, NPBool seekable, uint16_t *stype);
42  NPError destroyStream(NPStream *, NPReason);
43  void streamAsFile(NPStream *, const char *fname);
44  int32_t writeReady(NPStream *);
45  int32_t write(NPStream *, int32_t offset, int32_t len, void *buffer);
46  void print(NPPrint *);
47  int16_t handleEvent(XEvent *);
48  void urlNotify(const char *url, NPReason, void *notifyData);
49 
50  // Viewer API
51  EvDocumentModel *model() const { return m_model; }
52  unsigned currentPage() const;
53  unsigned pageCount() const;
54  double zoom() const;
55  void setZoom(double scale);
56  void goToPreviousPage();
57  void goToNextPage();
58  void goToPage(unsigned page);
59  void goToPage(const char *pageLabel);
60  void activateLink(EvLink *);
61  bool isContinuous() const;
62  void setContinuous(bool);
63  void toggleContinuous();
64  bool isDual() const;
65  void setDual(bool);
66  void toggleDual();
67  void zoomIn();
68  void zoomOut();
69  EvSizingMode sizingMode() const;
70  void setSizingMode(EvSizingMode);
71  void download() const;
72  void print() const;
73  bool toolbarVisible() const;
74  void setToolbarVisible(bool);
75 
76  bool canDownload() const;
77 
78  void setSearchModeEnabled(bool);
79  void search(EvJobFind *);
80  enum SearchDirection { Next, Previous };
81  void search(SearchDirection);
82  void clearSearch();
83  void restartSearch();
84 
85 private:
86  EvBrowserPlugin(NPP);
87  virtual ~EvBrowserPlugin();
88 
89  // Scripting interface
90  static NPObject *allocate(NPP, NPClass *);
91  static void deallocate(NPObject *);
92  static void invalidate(NPObject *);
93  static bool hasMethod(NPObject *, NPIdentifier name);
94  static bool invoke(NPObject *, NPIdentifier name, const NPVariant *args, uint32_t argCount, NPVariant *result);
95  static bool hasProperty(NPObject *, NPIdentifier name);
96  static bool getProperty(NPObject *, NPIdentifier name, NPVariant *);
97  static bool setProperty(NPObject *, NPIdentifier name, const NPVariant *);
98 
99  NPP m_NPP;
100  GtkWidget *m_window;
101  EvDocumentModel *m_model;
102  EvView *m_view;
103  GtkWidget *m_toolbar;
104  unique_gptr<char> m_url;
105 
106  static EvBrowserPluginClass s_pluginClass;
107 };
108 
109 #endif // EvBrowserPlugin_h