Round image line sizes up to 32. Seems to help with LHS image corruption with both...
[dcpomatic.git] / src / wx / film_viewer.cc
index 6ffe4e66a847f2f92aa4ccd7a9638df2c2d797a0..bf082adc2e534824eb6d769cc32fa5c43cb2be85 100644 (file)
@@ -30,6 +30,7 @@
 #include "lib/job_manager.h"
 #include "lib/film_state.h"
 #include "lib/options.h"
+#include "lib/subtitle.h"
 #include "film_viewer.h"
 #include "wx_util.h"
 
@@ -42,30 +43,48 @@ public:
        ThumbPanel (wxPanel* parent, Film* film)
                : wxPanel (parent)
                , _film (film)
-               , _image (0)
-               , _bitmap (0)
-       {
-       }
+               , _frame_rebuild_needed (false)
+               , _composition_needed (false)
+       {}
 
        /** Handle a paint event */
        void paint_event (wxPaintEvent& ev)
        {
-               if (_current_image != _pending_image) {
-                       delete _image;
-                       _image = new wxImage (std_to_wx (_pending_image));
-                       _current_image = _pending_image;
-                       setup ();
+               if (!_film || _film->num_thumbs() == 0) {
+                       wxPaintDC dc (this);
+                       return;
+               }
+
+               if (_frame_rebuild_needed) {
+                       _image.reset (new wxImage (std_to_wx (_film->thumb_file (_index))));
+
+                       _subtitles.clear ();
+                       list<pair<Position, string> > s = _film->thumb_subtitles (_index);
+                       for (list<pair<Position, string> >::iterator i = s.begin(); i != s.end(); ++i) {
+                               _subtitles.push_back (SubtitleView (i->first, std_to_wx (i->second)));
+                       }
+
+                       _frame_rebuild_needed = false;
+
+                       compose ();
+                       _composition_needed = false;
                }
 
-               if (_current_crop != _pending_crop) {
-                       _current_crop = _pending_crop;
-                       setup ();
+               if (_composition_needed) {
+                       compose ();
+                       _composition_needed = false;
                }
 
                wxPaintDC dc (this);
                if (_bitmap) {
                        dc.DrawBitmap (*_bitmap, 0, 0, false);
                }
+
+               if (_film->with_subtitles ()) {
+                       for (list<SubtitleView>::iterator i = _subtitles.begin(); i != _subtitles.end(); ++i) {
+                               dc.DrawBitmap (*i->bitmap, i->transformed_area.x, i->transformed_area.y, true);
+                       }
+               }
        }
 
        /** Handle a size event */
@@ -75,19 +94,14 @@ public:
                        return;
                }
 
-               setup ();
-               Refresh ();
-       }
-
-       void set (string f)
-       {
-               _pending_image = f;
-               Refresh ();
+               recompose ();
        }
 
-       void set_crop (Crop c)
+       /** @param n Thumbnail index */
+       void set (int n)
        {
-               _pending_crop = c;
+               _index = n;
+               _frame_rebuild_needed = true;
                Refresh ();
        }
 
@@ -96,9 +110,10 @@ public:
                _film = f;
                if (!_film) {
                        clear ();
+                       _frame_rebuild_needed = true;
                        Refresh ();
                } else {
-                       setup ();
+                       _frame_rebuild_needed = true;
                        Refresh ();
                }
        }
@@ -106,15 +121,14 @@ public:
        /** Clear our thumbnail image */
        void clear ()
        {
-               delete _bitmap;
-               _bitmap = 0;
-               delete _image;
-               _image = 0;
+               _bitmap.reset ();
+               _image.reset ();
+               _subtitles.clear ();
        }
 
-       void refresh ()
+       void recompose ()
        {
-               setup ();
+               _composition_needed = true;
                Refresh ();
        }
 
@@ -122,46 +136,88 @@ public:
 
 private:
 
-       void setup ()
+       void compose ()
        {
                if (!_film || !_image) {
                        return;
                }
-               
+
+               /* Size of the view */
                int vw, vh;
                GetSize (&vw, &vh);
 
+               /* Cropped rectangle */
+               Rectangle cropped_area (
+                       _film->crop().left,
+                       _film->crop().top,
+                       _image->GetWidth() - (_film->crop().left + _film->crop().right),
+                       _image->GetHeight() - (_film->crop().top + _film->crop().bottom)
+                       );
+
+               /* Target ratio */
                float const target = _film->format() ? _film->format()->ratio_as_float (_film) : 1.78;
 
-               _cropped_image = _image->GetSubImage (
-                       wxRect (
-                               _current_crop.left,
-                               _current_crop.top,
-                               _image->GetWidth() - (_current_crop.left + _current_crop.right),
-                               _image->GetHeight() - (_current_crop.top + _current_crop.bottom)
-                               )
-                       );
+               _transformed_image = _image->GetSubImage (wxRect (cropped_area.x, cropped_area.y, cropped_area.w, cropped_area.h));
+
+               float x_scale = 1;
+               float y_scale = 1;
 
                if ((float (vw) / vh) > target) {
                        /* view is longer (horizontally) than the ratio; fit height */
-                       _cropped_image.Rescale (vh * target, vh, wxIMAGE_QUALITY_HIGH);
+                       _transformed_image.Rescale (vh * target, vh, wxIMAGE_QUALITY_HIGH);
+                       x_scale = vh * target / cropped_area.w;
+                       y_scale = float (vh) / cropped_area.h;
                } else {
                        /* view is shorter (horizontally) than the ratio; fit width */
-                       _cropped_image.Rescale (vw, vw / target, wxIMAGE_QUALITY_HIGH);
+                       _transformed_image.Rescale (vw, vw / target, wxIMAGE_QUALITY_HIGH);
+                       x_scale = float (vw) / cropped_area.w;
+                       y_scale = (vw / target) / cropped_area.h;
                }
 
-               delete _bitmap;
-               _bitmap = new wxBitmap (_cropped_image);
+               _bitmap.reset (new wxBitmap (_transformed_image));
+
+               for (list<SubtitleView>::iterator i = _subtitles.begin(); i != _subtitles.end(); ++i) {
+
+                       i->transformed_area = transformed_subtitle_area (
+                               x_scale, y_scale, i->base_area, _film->subtitle_offset(), _film->subtitle_scale()
+                               );
+
+                       i->transformed_image = i->base_image;
+                       i->transformed_image.Rescale (i->transformed_area.w, i->transformed_area.h, wxIMAGE_QUALITY_HIGH);
+                       i->transformed_area.x -= _film->crop().left;
+                       i->transformed_area.y -= _film->crop().top;
+                       i->bitmap.reset (new wxBitmap (i->transformed_image));
+               }
        }
 
        Film* _film;
-       wxImage* _image;
-       std::string _current_image;
-       std::string _pending_image;
-       wxImage _cropped_image;
-       wxBitmap* _bitmap;
-       Crop _current_crop;
-       Crop _pending_crop;
+       shared_ptr<wxImage> _image;
+       wxImage _transformed_image;
+       /** currently-displayed thumbnail index */
+       int _index;
+       shared_ptr<wxBitmap> _bitmap;
+       bool _frame_rebuild_needed;
+       bool _composition_needed;
+
+       struct SubtitleView
+       {
+               SubtitleView (Position p, wxString const & i)
+                       : base_image (i)
+               {
+                       base_area.x = p.x;
+                       base_area.y = p.y;
+                       base_area.w = base_image.GetWidth ();
+                       base_area.h = base_image.GetHeight ();
+               }
+
+               Rectangle base_area;
+               Rectangle transformed_area;
+               wxImage base_image;
+               wxImage transformed_image;
+               shared_ptr<wxBitmap> bitmap;
+       };
+
+       list<SubtitleView> _subtitles;
 };
 
 BEGIN_EVENT_TABLE (ThumbPanel, wxPanel)
@@ -196,7 +252,7 @@ FilmViewer::set_thumbnail (int n)
                return;
        }
 
-       _thumb_panel->set (_film->thumb_file(n));
+       _thumb_panel->set (n);
 }
 
 void
@@ -208,9 +264,8 @@ FilmViewer::slider_changed (wxCommandEvent &)
 void
 FilmViewer::film_changed (Film::Property p)
 {
-       if (p == Film::CROP) {
-               _thumb_panel->set_crop (_film->crop ());
-       } else if (p == Film::THUMBS) {
+       switch (p) {
+       case Film::THUMBS:
                if (_film && _film->num_thumbs() > 1) {
                        _slider->SetRange (0, _film->num_thumbs () - 1);
                } else {
@@ -220,12 +275,21 @@ FilmViewer::film_changed (Film::Property p)
                
                _slider->SetValue (0);
                set_thumbnail (0);
-       } else if (p == Film::FORMAT) {
-               _thumb_panel->refresh ();
-       } else if (p == Film::CONTENT) {
+               break;
+       case Film::CONTENT:
                setup_visibility ();
                _film->examine_content ();
                update_thumbs ();
+               break;
+       case Film::CROP:
+       case Film::FORMAT:
+       case Film::WITH_SUBTITLES:
+       case Film::SUBTITLE_OFFSET:
+       case Film::SUBTITLE_SCALE:
+               _thumb_panel->recompose ();
+               break;
+       default:
+               break;
        }
 }
 
@@ -246,7 +310,6 @@ FilmViewer::set_film (Film* f)
        _film->Changed.connect (sigc::mem_fun (*this, &FilmViewer::film_changed));
        film_changed (Film::CROP);
        film_changed (Film::THUMBS);
-       _thumb_panel->refresh ();
        setup_visibility ();
 }
 
@@ -260,11 +323,12 @@ FilmViewer::update_thumbs ()
        _film->update_thumbs_pre_gui ();
 
        shared_ptr<const FilmState> s = _film->state_copy ();
-       shared_ptr<Options> o (new Options (s->dir ("thumbs"), ".tiff", ""));
+       shared_ptr<Options> o (new Options (s->dir ("thumbs"), ".png", ""));
        o->out_size = _film->size ();
        o->apply_crop = false;
        o->decode_audio = false;
        o->decode_video_frequency = 128;
+       o->decode_subtitles = true;
        
        shared_ptr<Job> j (new ThumbsJob (s, o, _film->log(), shared_ptr<Job> ()));
        j->Finished.connect (sigc::mem_fun (_film, &Film::update_thumbs_post_gui));