src/add-ons/screen_savers/slideshowsaver/SlideShowSaver.h

   1 /*****************************************************************************/
   2 // SlideShowSaver
   3 // Written by Michael Wilber
   4 // Slide show code derived from ShowImage code, written by Michael Pfeiffer
   5 //
   6 // SlideShowSaver.h
   7 //
   8 //
   9 // Copyright (C) Haiku
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining a
  12 // copy of this software and associated documentation files (the "Software"),
  13 // to deal in the Software without restriction, including without limitation
  14 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
  15 // and/or sell copies of the Software, and to permit persons to whom the
  16 // Software is furnished to do so, subject to the following conditions:
  17 //
  18 // The above copyright notice and this permission notice shall be included
  19 // in all copies or substantial portions of the Software.
  20 //
  21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  22 // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  23 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  24 // THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  25 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  26 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  27 // DEALINGS IN THE SOFTWARE.
  28 /*****************************************************************************/
  29
  30
  31 #ifndef SLIDE_SHOW_SAVER_H
  32 #define SLIDE_SHOW_SAVER_H
  33
  34 #include <Locker.h>
  35 #include <ScreenSaver.h>
  36 #include <Bitmap.h>
  37 #include <String.h>
  38 #include <Entry.h>
  39 #include "LiveSettings.h"
  40
  41 class SlideShowSaver :
  42         public BScreenSaver,
  43         public LiveSettingsObserver {
  44 public:
  45         SlideShowSaver(BMessage *archive, image_id image);
  46         virtual ~SlideShowSaver(void);
  47
  48         virtual void SettingChanged(uint32 setting);
  49
  50         virtual void StartConfig(BView *view);
  51         virtual status_t StartSaver(BView *view, bool preview);
  52         virtual void Draw(BView *view, int32 frame);
  53
  54 protected:
  55         // reload ticksize setting and apply it
  56         status_t UpdateTickSize();
  57
  58         status_t UpdateShowCaption();
  59         status_t UpdateShowBorder();
  60         // reload directory setting and apply it
  61         status_t UpdateDirectory();
  62
  63         // Function taken from Haiku ShowImage,
  64         // function originally written by Michael Pfeiffer
  65         status_t SetImage(const entry_ref *pref);
  66
  67         // Function originally from Haiku ShowImage
  68         bool ShowNextImage(bool next, bool rewind);
  69
  70         // Function taken from Haiku ShowImage,
  71         // function originally written by Michael Pfeiffer
  72         bool IsImage(const entry_ref *pref);
  73
  74         // Function taken from Haiku ShowImage,
  75         // function originally written by Michael Pfeiffer
  76         bool FindNextImage(entry_ref *in_current, entry_ref *out_image, bool next, bool rewind);
  77
  78         // Function taken from Haiku ShowImage,
  79         // function originally written by Michael Pfeiffer
  80         void FreeEntries(BList *entries);
  81
  82         void LayoutCaption(BView *view, BFont &font, BPoint &pos, BRect &rect);
  83         void DrawCaption(BView *view);
  84         // void UpdateCaption(BView *view);
  85
  86 private:
  87         BLocker fLock;
  88         bool fNewDirectory;
  89         LiveSettings *fSettings;
  90         BBitmap *fBitmap;
  91         BString fCaption;
  92         entry_ref fCurrentRef;
  93         bool fShowCaption;
  94         bool fShowBorder;
  95 };
  96
  97 #endif // #ifndef SLIDE_SHOW_SAVER_H
  98