Simple mouseover in the video waveform (part of #932).

diff --git a/ChangeLog b/ChangeLog
index 1f0d702865da1413b4d14eec2f4d098e29a63360..b7c4aa47b9ce9ef7084c638fddf19bdfebc0947c 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2016-08-16  c.hetherington  <cth@carlh.net>
+
+       * Simple information on mouse position in the video waveform (part of #932).
+
 2016-08-15  Carl Hetherington  <cth@carlh.net>
 
        * Version 2.9.11 released.

diff --git a/src/tools/dcpomatic.cc b/src/tools/dcpomatic.cc
index 1f320f088ec57be6c0aba504b78ae2b995d044a5..d4695f1fa08b04475dd4210a3ff7ee40c5b02601 100644 (file)
--- a/src/tools/dcpomatic.cc
+++ b/src/tools/dcpomatic.cc
@@ -317,6 +317,8 @@ public:
                _film = film;
                _film_viewer->set_film (_film);
                _film_editor->set_film (_film);
+               delete _video_waveform_dialog;
+               _video_waveform_dialog = 0;
                set_menu_sensitivity ();
                Config::instance()->add_to_history (_film->directory ());
        }
@@ -649,7 +651,7 @@ private:
        void tools_video_waveform ()
        {
                if (!_video_waveform_dialog) {
-                       _video_waveform_dialog = new VideoWaveformDialog (this, _film_viewer);
+                       _video_waveform_dialog = new VideoWaveformDialog (this, _film, _film_viewer);
                }
 
                _video_waveform_dialog->Show ();

diff --git a/src/wx/video_waveform_dialog.cc b/src/wx/video_waveform_dialog.cc
index e4b09b8eec0b2f9ecb24ddf012fbf3e0d143f81b..412ebf8bb7482a67625ae084a256220ee10fb706 100644 (file)
--- a/src/wx/video_waveform_dialog.cc
+++ b/src/wx/video_waveform_dialog.cc
@@ -27,8 +27,9 @@
 
 using std::cout;
 using boost::bind;
+using boost::weak_ptr;
 
-VideoWaveformDialog::VideoWaveformDialog (wxWindow* parent, FilmViewer* viewer)
+VideoWaveformDialog::VideoWaveformDialog (wxWindow* parent, weak_ptr<const Film> film, FilmViewer* viewer)
        : wxDialog (
                parent,
                wxID_ANY,
@@ -56,7 +57,18 @@ VideoWaveformDialog::VideoWaveformDialog (wxWindow* parent, FilmViewer* viewer)
 
        overall_sizer->Add (controls, 0, wxALL | wxEXPAND, DCPOMATIC_SIZER_X_GAP);
 
-       _plot = new VideoWaveformPlot (this, _viewer);
+       wxBoxSizer* position = new wxBoxSizer (wxHORIZONTAL);
+       add_label_to_sizer (position, this, _("Image X position"), true);
+       _x_position = new wxStaticText (this, wxID_ANY, "");
+       _x_position->SetMinSize (wxSize (64, -1));
+       position->Add (_x_position, 0, wxALL, DCPOMATIC_SIZER_X_GAP);
+       add_label_to_sizer (position, this, _("component value"), true);
+       _value = new wxStaticText (this, wxID_ANY, "");
+       _value->SetMinSize (wxSize (64, -1));
+       position->Add (_value, 0, wxALL, DCPOMATIC_SIZER_X_GAP);
+       overall_sizer->Add (position, 0, wxEXPAND | wxALL, DCPOMATIC_SIZER_Y_GAP);
+
+       _plot = new VideoWaveformPlot (this, film, _viewer);
        overall_sizer->Add (_plot, 1, wxALL | wxEXPAND, 12);
 
 #ifdef DCPOMATIC_LINUX
@@ -71,8 +83,9 @@ VideoWaveformDialog::VideoWaveformDialog (wxWindow* parent, FilmViewer* viewer)
        overall_sizer->SetSizeHints (this);
 
        Bind (wxEVT_SHOW, bind (&VideoWaveformDialog::shown, this, _1));
-       _component->Bind  (wxEVT_COMMAND_CHOICE_SELECTED, bind (&VideoWaveformDialog::component_changed, this));
+       _component->Bind (wxEVT_COMMAND_CHOICE_SELECTED, bind (&VideoWaveformDialog::component_changed, this));
        _contrast->Bind (wxEVT_SCROLL_THUMBTRACK, bind (&VideoWaveformDialog::contrast_changed, this));
+       _plot->MouseMoved.connect (bind (&VideoWaveformDialog::mouse_moved, this, _1, _2, _3, _4));
 
        _component->SetSelection (0);
        _contrast->SetValue (32);
@@ -101,3 +114,19 @@ VideoWaveformDialog::contrast_changed ()
 {
        _plot->set_contrast (_contrast->GetValue ());
 }
+
+void
+VideoWaveformDialog::mouse_moved (int x1, int x2, int y1, int y2)
+{
+       if (x1 != x2) {
+               _x_position->SetLabel (wxString::Format ("%d-%d", x1, x2));
+       } else {
+               _x_position->SetLabel (wxString::Format ("%d", x1));
+       }
+
+       if (y1 != y2) {
+               _value->SetLabel (wxString::Format ("%d-%d", y1, y2));
+       } else {
+               _value->SetLabel (wxString::Format ("%d", y1));
+       }
+}

diff --git a/src/wx/video_waveform_dialog.h b/src/wx/video_waveform_dialog.h
index c853d0cda0945012172abe2fead3bdf8e6c19436..aa134f7a5f9ad236cd7a48697914dd895dcd98a0 100644 (file)
--- a/src/wx/video_waveform_dialog.h
+++ b/src/wx/video_waveform_dialog.h
@@ -19,22 +19,27 @@
 */
 
 #include <wx/wx.h>
+#include <boost/weak_ptr.hpp>
 
 class VideoWaveformPlot;
 class FilmViewer;
+class Film;
 
 class VideoWaveformDialog : public wxDialog
 {
 public:
-       VideoWaveformDialog (wxWindow* parent, FilmViewer* viewer);
+       VideoWaveformDialog (wxWindow* parent, boost::weak_ptr<const Film> film, FilmViewer* viewer);
 
 private:
        void shown (wxShowEvent &);
        void component_changed ();
        void contrast_changed ();
+       void mouse_moved (int x1, int x2, int y1, int y2);
 
        FilmViewer* _viewer;
        VideoWaveformPlot* _plot;
        wxChoice* _component;
        wxSlider* _contrast;
+       wxStaticText* _x_position;
+       wxStaticText* _value;
 };

diff --git a/src/wx/video_waveform_plot.cc b/src/wx/video_waveform_plot.cc
index e2083caa632b230ef1c33c6e59761dcda2befe9f..ad0498057b8a0c5296a598316b41aa1e58610358 100644 (file)
--- a/src/wx/video_waveform_plot.cc
+++ b/src/wx/video_waveform_plot.cc
@@ -32,16 +32,19 @@
 
 using std::cout;
 using std::min;
+using std::max;
 using std::string;
 using boost::weak_ptr;
 using boost::shared_ptr;
 using dcp::locale_convert;
 
 int const VideoWaveformPlot::_vertical_margin = 8;
+int const VideoWaveformPlot::_pixel_values = 4096;
 int const VideoWaveformPlot::_x_axis_width = 52;
 
-VideoWaveformPlot::VideoWaveformPlot (wxWindow* parent, FilmViewer* viewer)
+VideoWaveformPlot::VideoWaveformPlot (wxWindow* parent, weak_ptr<const Film> film, FilmViewer* viewer)
        : wxPanel (parent, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxFULL_REPAINT_ON_RESIZE)
+       , _film (film)
        , _dirty (true)
        , _enabled (false)
        , _component (0)
@@ -55,6 +58,7 @@ VideoWaveformPlot::VideoWaveformPlot (wxWindow* parent, FilmViewer* viewer)
 
        Bind (wxEVT_PAINT, boost::bind (&VideoWaveformPlot::paint, this));
        Bind (wxEVT_SIZE,  boost::bind (&VideoWaveformPlot::sized, this, _1));
+       Bind (wxEVT_MOTION, boost::bind (&VideoWaveformPlot::mouse_moved, this, _1));
 
        SetMinSize (wxSize (640, 512));
        SetBackgroundColour (wxColour (0, 0, 0));
@@ -111,7 +115,7 @@ VideoWaveformPlot::paint ()
                p.AddLineToPoint (_x_axis_width - 4, y);
                gc->StrokePath (p);
                int x = 4;
-               int const n = i * 4096 / label_gaps;
+               int const n = i * _pixel_values / label_gaps;
                if (n < 10) {
                        x += extra[0];
                } else if (n < 100) {
@@ -153,7 +157,7 @@ VideoWaveformPlot::create_waveform ()
 
                int* ip = _image->data (_component) + x;
                for (int y = 0; y < image_size.height; ++y) {
-                       strip[*ip * waveform_height / 4096]++;
+                       strip[*ip * waveform_height / _pixel_values]++;
                        ip += image_size.width;
                }
 
@@ -220,3 +224,34 @@ VideoWaveformPlot::set_contrast (int b)
        _dirty = true;
        Refresh ();
 }
+
+void
+VideoWaveformPlot::mouse_moved (wxMouseEvent& ev)
+{
+       if (!_image) {
+               return;
+       }
+
+       if (_dirty) {
+               create_waveform ();
+               _dirty = false;
+       }
+
+       shared_ptr<const Film> film = _film.lock ();
+       if (!film) {
+               return;
+       }
+
+       dcp::Size const full = film->frame_size ();
+
+       double const xs = static_cast<double> (full.width) / _waveform->size().width;
+       int const x1 = max (0, min (full.width - 1, int (floor (ev.GetPosition().x - _x_axis_width - 0.5) * xs)));
+       int const x2 = max (0, min (full.width - 1, int (floor (ev.GetPosition().x - _x_axis_width + 0.5) * xs)));
+
+       double const ys = static_cast<double> (_pixel_values) / _waveform->size().height;
+       int const fy = _waveform->size().height - (ev.GetPosition().y - _vertical_margin);
+       int const y1 = max (0, min (_pixel_values - 1, int (floor (fy - 0.5) * ys)));
+       int const y2 = max (0, min (_pixel_values - 1, int (floor (fy + 0.5) * ys)));
+
+       MouseMoved (x1, x2, y1, y2);
+}

diff --git a/src/wx/video_waveform_plot.h b/src/wx/video_waveform_plot.h
index 0f8bd33cdb9c329d17ec1d518d737fe8fea55466..7e9dbf70999691da6ca2ee793a2bae1c8814d3cc 100644 (file)
--- a/src/wx/video_waveform_plot.h
+++ b/src/wx/video_waveform_plot.h
@@ -29,23 +29,33 @@ namespace dcp {
 
 class PlayerVideo;
 class Image;
+class Film;
 class FilmViewer;
 
 class VideoWaveformPlot : public wxPanel
 {
 public:
-       VideoWaveformPlot (wxWindow* parent, FilmViewer* viewer);
+       VideoWaveformPlot (wxWindow* parent, boost::weak_ptr<const Film> film, FilmViewer* viewer);
 
        void set_enabled (bool e);
        void set_component (int c);
        void set_contrast (int b);
 
+       /** Emitted when the mouse is moved over the waveform.  The parameters
+           are:
+           - (int, int): image x range
+           - (int, int): component value range
+       */
+       boost::signals2::signal<void (int, int, int, int)> MouseMoved;
+
 private:
        void paint ();
        void sized (wxSizeEvent &);
        void create_waveform ();
        void set_image (boost::weak_ptr<PlayerVideo>);
+       void mouse_moved (wxMouseEvent &);
 
+       boost::weak_ptr<const Film> _film;
        boost::shared_ptr<dcp::OpenJPEGImage> _image;
        boost::shared_ptr<const Image> _waveform;
        bool _dirty;
@@ -54,6 +64,7 @@ private:
        int _contrast;
 
        static int const _vertical_margin;
+       static int const _pixel_values;
        static int const _x_axis_width;
 
        boost::signals2::connection _viewer_connection;