2 Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
4 This program is free software; you can redistribute it and/or modify
5 it 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.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
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., 675 Mass Ave, Cambridge, MA 02139, USA.
20 /** @file src/film_viewer.cc
21 * @brief A wx widget to view `thumbnails' of a Film.
27 #include "lib/format.h"
29 #include "lib/thumbs_job.h"
30 #include "lib/job_manager.h"
31 #include "lib/film_state.h"
32 #include "lib/options.h"
33 #include "lib/subtitle.h"
34 #include "film_viewer.h"
38 using namespace boost;
40 class ThumbPanel : public wxPanel
43 ThumbPanel (wxPanel* parent, Film* film)
46 , _frame_rebuild_needed (false)
47 , _composition_needed (false)
50 /** Handle a paint event */
51 void paint_event (wxPaintEvent& ev)
53 if (!_film || _film->num_thumbs() == 0) {
58 if (_frame_rebuild_needed) {
59 _image.reset (new wxImage (std_to_wx (_film->thumb_file (_index))));
62 pair<Position, string> s = _film->thumb_subtitle (_index);
63 if (!s.second.empty ()) {
64 _subtitle.reset (new SubtitleView (s.first, std_to_wx (s.second)));
67 _frame_rebuild_needed = false;
71 if (_composition_needed) {
77 dc.DrawBitmap (*_bitmap, 0, 0, false);
80 if (_film->with_subtitles() && _subtitle) {
81 dc.DrawBitmap (*_subtitle->bitmap, _subtitle->transformed_area.x, _subtitle->transformed_area.y, true);
85 /** Handle a size event */
86 void size_event (wxSizeEvent &)
95 /** @param n Thumbnail index */
99 _frame_rebuild_needed = true;
103 void set_film (Film* f)
108 _frame_rebuild_needed = true;
111 _frame_rebuild_needed = true;
116 /** Clear our thumbnail image */
126 _composition_needed = true;
130 DECLARE_EVENT_TABLE ();
136 _composition_needed = false;
138 if (!_film || !_image) {
142 /* Size of the view */
146 /* Cropped rectangle */
147 Rectangle cropped_area (
150 _image->GetWidth() - (_film->crop().left + _film->crop().right),
151 _image->GetHeight() - (_film->crop().top + _film->crop().bottom)
155 float const target = _film->format() ? _film->format()->ratio_as_float (_film) : 1.78;
157 _transformed_image = _image->GetSubImage (wxRect (cropped_area.x, cropped_area.y, cropped_area.width, cropped_area.height));
162 if ((float (vw) / vh) > target) {
163 /* view is longer (horizontally) than the ratio; fit height */
164 _transformed_image.Rescale (vh * target, vh, wxIMAGE_QUALITY_HIGH);
165 x_scale = vh * target / cropped_area.width;
166 y_scale = float (vh) / cropped_area.height;
168 /* view is shorter (horizontally) than the ratio; fit width */
169 _transformed_image.Rescale (vw, vw / target, wxIMAGE_QUALITY_HIGH);
170 x_scale = float (vw) / cropped_area.width;
171 y_scale = (vw / target) / cropped_area.height;
174 _bitmap.reset (new wxBitmap (_transformed_image));
178 _subtitle->transformed_area = subtitle_transformed_area (
179 x_scale, y_scale, _subtitle->base_area, _film->subtitle_offset(), _film->subtitle_scale()
182 _subtitle->transformed_image = _subtitle->base_image;
183 _subtitle->transformed_image.Rescale (_subtitle->transformed_area.width, _subtitle->transformed_area.height, wxIMAGE_QUALITY_HIGH);
184 _subtitle->transformed_area.x -= _film->crop().left;
185 _subtitle->transformed_area.y -= _film->crop().top;
186 _subtitle->bitmap.reset (new wxBitmap (_subtitle->transformed_image));
191 shared_ptr<wxImage> _image;
192 wxImage _transformed_image;
193 /** currently-displayed thumbnail index */
195 shared_ptr<wxBitmap> _bitmap;
196 bool _frame_rebuild_needed;
197 bool _composition_needed;
201 SubtitleView (Position p, wxString const & i)
206 base_area.width = base_image.GetWidth ();
207 base_area.height = base_image.GetHeight ();
211 Rectangle transformed_area;
213 wxImage transformed_image;
214 shared_ptr<wxBitmap> bitmap;
217 shared_ptr<SubtitleView> _subtitle;
220 BEGIN_EVENT_TABLE (ThumbPanel, wxPanel)
221 EVT_PAINT (ThumbPanel::paint_event)
222 EVT_SIZE (ThumbPanel::size_event)
225 FilmViewer::FilmViewer (Film* f, wxWindow* p)
229 _sizer = new wxBoxSizer (wxVERTICAL);
232 _thumb_panel = new ThumbPanel (this, f);
233 _sizer->Add (_thumb_panel, 1, wxEXPAND);
235 int const m = max (1, f ? f->num_thumbs() - 1 : 0);
236 _slider = new wxSlider (this, wxID_ANY, 0, 0, m);
237 _sizer->Add (_slider, 0, wxEXPAND | wxLEFT | wxRIGHT);
240 _slider->Connect (wxID_ANY, wxEVT_COMMAND_SLIDER_UPDATED, wxCommandEventHandler (FilmViewer::slider_changed), 0, this);
246 FilmViewer::set_thumbnail (int n)
248 if (_film == 0 || _film->num_thumbs() <= n) {
252 _thumb_panel->set (n);
256 FilmViewer::slider_changed (wxCommandEvent &)
258 set_thumbnail (_slider->GetValue ());
262 FilmViewer::film_changed (Film::Property p)
266 if (_film && _film->num_thumbs() > 1) {
267 _slider->SetRange (0, _film->num_thumbs () - 1);
269 _thumb_panel->clear ();
270 _slider->SetRange (0, 1);
273 _slider->SetValue (0);
278 _film->examine_content ();
283 case Film::WITH_SUBTITLES:
284 case Film::SUBTITLE_OFFSET:
285 case Film::SUBTITLE_SCALE:
286 _thumb_panel->recompose ();
294 FilmViewer::set_film (Film* f)
301 _thumb_panel->set_film (_film);
307 _film->Changed.connect (sigc::mem_fun (*this, &FilmViewer::film_changed));
308 film_changed (Film::CROP);
309 film_changed (Film::THUMBS);
314 FilmViewer::update_thumbs ()
320 _film->update_thumbs_pre_gui ();
322 shared_ptr<const FilmState> s = _film->state_copy ();
323 shared_ptr<Options> o (new Options (s->dir ("thumbs"), ".png", ""));
324 o->out_size = _film->size ();
325 o->apply_crop = false;
326 o->decode_audio = false;
327 o->decode_video_frequency = 128;
328 o->decode_subtitles = true;
330 shared_ptr<Job> j (new ThumbsJob (s, o, _film->log(), shared_ptr<Job> ()));
331 j->Finished.connect (sigc::mem_fun (_film, &Film::update_thumbs_post_gui));
332 JobManager::instance()->add (j);
336 FilmViewer::setup_visibility ()
342 ContentType const c = _film->content_type ();
343 _slider->Show (c == VIDEO);