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->thumbs().size() == 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 Crop const fc = _film->crop ();
148 /* Cropped rectangle */
152 _image->GetWidth() - (fc.left + fc.right),
153 _image->GetHeight() - (fc.top + fc.bottom)
157 float const target = _film->format() ? _film->format()->ratio_as_float (_film) : 1.78;
159 _transformed_image = _image->GetSubImage (wxRect (cropped_area.x, cropped_area.y, cropped_area.width, cropped_area.height));
164 if ((float (vw) / vh) > target) {
165 /* view is longer (horizontally) than the ratio; fit height */
166 _transformed_image.Rescale (vh * target, vh, wxIMAGE_QUALITY_HIGH);
167 x_scale = vh * target / cropped_area.width;
168 y_scale = float (vh) / cropped_area.height;
170 /* view is shorter (horizontally) than the ratio; fit width */
171 _transformed_image.Rescale (vw, vw / target, wxIMAGE_QUALITY_HIGH);
172 x_scale = float (vw) / cropped_area.width;
173 y_scale = (vw / target) / cropped_area.height;
176 _bitmap.reset (new wxBitmap (_transformed_image));
180 _subtitle->transformed_area = subtitle_transformed_area (
181 x_scale, y_scale, _subtitle->base_area, _film->subtitle_offset(), _film->subtitle_scale()
184 _subtitle->transformed_image = _subtitle->base_image;
185 _subtitle->transformed_image.Rescale (_subtitle->transformed_area.width, _subtitle->transformed_area.height, wxIMAGE_QUALITY_HIGH);
186 _subtitle->transformed_area.x -= _film->crop().left;
187 _subtitle->transformed_area.y -= _film->crop().top;
188 _subtitle->bitmap.reset (new wxBitmap (_subtitle->transformed_image));
193 shared_ptr<wxImage> _image;
194 wxImage _transformed_image;
195 /** currently-displayed thumbnail index */
197 shared_ptr<wxBitmap> _bitmap;
198 bool _frame_rebuild_needed;
199 bool _composition_needed;
203 SubtitleView (Position p, wxString const & i)
208 base_area.width = base_image.GetWidth ();
209 base_area.height = base_image.GetHeight ();
213 Rect transformed_area;
215 wxImage transformed_image;
216 shared_ptr<wxBitmap> bitmap;
219 shared_ptr<SubtitleView> _subtitle;
222 BEGIN_EVENT_TABLE (ThumbPanel, wxPanel)
223 EVT_PAINT (ThumbPanel::paint_event)
224 EVT_SIZE (ThumbPanel::size_event)
227 FilmViewer::FilmViewer (Film* f, wxWindow* p)
231 _sizer = new wxBoxSizer (wxVERTICAL);
234 _thumb_panel = new ThumbPanel (this, f);
235 _sizer->Add (_thumb_panel, 1, wxEXPAND);
237 int const m = max ((size_t) 1, f ? f->thumbs().size() - 1 : 0);
238 _slider = new wxSlider (this, wxID_ANY, 0, 0, m);
239 _sizer->Add (_slider, 0, wxEXPAND | wxLEFT | wxRIGHT);
242 _slider->Connect (wxID_ANY, wxEVT_COMMAND_SLIDER_UPDATED, wxCommandEventHandler (FilmViewer::slider_changed), 0, this);
248 FilmViewer::set_thumbnail (int n)
250 if (_film == 0 || int (_film->thumbs().size()) <= n) {
254 _thumb_panel->set (n);
258 FilmViewer::slider_changed (wxCommandEvent &)
260 set_thumbnail (_slider->GetValue ());
264 FilmViewer::film_changed (FilmState::Property p)
267 case FilmState::THUMBS:
268 if (_film && _film->thumbs().size() > 1) {
269 _slider->SetRange (0, _film->thumbs().size() - 1);
271 _thumb_panel->clear ();
272 _slider->SetRange (0, 1);
275 _slider->SetValue (0);
278 case FilmState::CONTENT:
280 _film->examine_content ();
283 case FilmState::CROP:
284 case FilmState::FORMAT:
285 case FilmState::WITH_SUBTITLES:
286 case FilmState::SUBTITLE_OFFSET:
287 case FilmState::SUBTITLE_SCALE:
288 _thumb_panel->recompose ();
296 FilmViewer::set_film (Film* f)
303 _thumb_panel->set_film (_film);
309 _film->Changed.connect (sigc::mem_fun (*this, &FilmViewer::film_changed));
310 film_changed (Film::CROP);
311 film_changed (Film::THUMBS);
316 FilmViewer::update_thumbs ()
322 _film->update_thumbs_pre_gui ();
324 shared_ptr<const FilmState> s = _film->state_copy ();
325 shared_ptr<Options> o (new Options (s->dir ("thumbs"), ".png", ""));
326 o->out_size = _film->size ();
327 o->apply_crop = false;
328 o->decode_audio = false;
329 o->decode_video_frequency = 128;
330 o->decode_subtitles = true;
332 shared_ptr<Job> j (new ThumbsJob (s, o, _film->log(), shared_ptr<Job> ()));
333 j->Finished.connect (sigc::mem_fun (_film, &Film::update_thumbs_post_gui));
334 JobManager::instance()->add (j);
338 FilmViewer::setup_visibility ()
344 ContentType const c = _film->content_type ();
345 _slider->Show (c == VIDEO);