Tidying up of scrolling in the matrix view.
authorCarl Hetherington <cth@carlh.net>
Wed, 18 Jul 2018 21:39:04 +0000 (22:39 +0100)
committerCarl Hetherington <cth@carlh.net>
Wed, 18 Jul 2018 21:39:04 +0000 (22:39 +0100)
src/wx/audio_mapping_view.cc
src/wx/audio_mapping_view.h

index a9cdb66..0aaee31 100644 (file)
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2013-2016 Carl Hetherington <cth@carlh.net>
+    Copyright (C) 2013-2018 Carl Hetherington <cth@carlh.net>
 
     This file is part of DCP-o-matic.
 
@@ -124,11 +124,14 @@ AudioMappingView::AudioMappingView (wxWindow* parent)
        , _last_tooltip_row (0)
        , _last_tooltip_column (0)
 {
-       _left_labels = new wxPanel (this, wxID_ANY);
+       _left_labels = new wxScrolledCanvas (this, wxID_ANY);
        _left_labels->Bind (wxEVT_PAINT, boost::bind (&AudioMappingView::paint_left_labels, this));
-       _top_labels = new wxPanel (this, wxID_ANY);
+       _top_labels = new wxScrolledCanvas (this, wxID_ANY);
        _top_labels->Bind (wxEVT_PAINT, boost::bind (&AudioMappingView::paint_top_labels, this));
 
+       _left_labels->ShowScrollbars (wxSHOW_SB_NEVER, wxSHOW_SB_NEVER);
+       _top_labels->ShowScrollbars (wxSHOW_SB_NEVER, wxSHOW_SB_NEVER);
+
        _grid = new wxGrid (this, wxID_ANY);
 
        _grid->CreateGrid (0, MAX_DCP_AUDIO_CHANNELS + 1);
@@ -152,14 +155,14 @@ AudioMappingView::AudioMappingView (wxWindow* parent)
        Bind (wxEVT_GRID_CELL_LEFT_CLICK, boost::bind (&AudioMappingView::left_click, this, _1));
        Bind (wxEVT_GRID_CELL_RIGHT_CLICK, boost::bind (&AudioMappingView::right_click, this, _1));
        _grid->GetGridWindow()->Bind (wxEVT_MOTION, boost::bind (&AudioMappingView::mouse_moved_grid, this, _1));
-       _grid->Bind (wxEVT_SCROLLWIN_TOP, boost::bind (&AudioMappingView::grid_scrolled, this));
-       _grid->Bind (wxEVT_SCROLLWIN_BOTTOM, boost::bind (&AudioMappingView::grid_scrolled, this));
-       _grid->Bind (wxEVT_SCROLLWIN_LINEUP, boost::bind (&AudioMappingView::grid_scrolled, this));
-       _grid->Bind (wxEVT_SCROLLWIN_LINEDOWN, boost::bind (&AudioMappingView::grid_scrolled, this));
-       _grid->Bind (wxEVT_SCROLLWIN_PAGEUP, boost::bind (&AudioMappingView::grid_scrolled, this));
-       _grid->Bind (wxEVT_SCROLLWIN_PAGEDOWN, boost::bind (&AudioMappingView::grid_scrolled, this));
-       _grid->Bind (wxEVT_SCROLLWIN_THUMBTRACK, boost::bind (&AudioMappingView::grid_scrolled, this));
-       _grid->Bind (wxEVT_SCROLLWIN_THUMBRELEASE, boost::bind (&AudioMappingView::grid_scrolled, this));
+       _grid->Bind (wxEVT_SCROLLWIN_TOP, boost::bind (&AudioMappingView::grid_scrolled, this, _1));
+       _grid->Bind (wxEVT_SCROLLWIN_BOTTOM, boost::bind (&AudioMappingView::grid_scrolled, this, _1));
+       _grid->Bind (wxEVT_SCROLLWIN_LINEUP, boost::bind (&AudioMappingView::grid_scrolled, this, _1));
+       _grid->Bind (wxEVT_SCROLLWIN_LINEDOWN, boost::bind (&AudioMappingView::grid_scrolled, this, _1));
+       _grid->Bind (wxEVT_SCROLLWIN_PAGEUP, boost::bind (&AudioMappingView::grid_scrolled, this, _1));
+       _grid->Bind (wxEVT_SCROLLWIN_PAGEDOWN, boost::bind (&AudioMappingView::grid_scrolled, this, _1));
+       _grid->Bind (wxEVT_SCROLLWIN_THUMBTRACK, boost::bind (&AudioMappingView::grid_scrolled, this, _1));
+       _grid->Bind (wxEVT_SCROLLWIN_THUMBRELEASE, boost::bind (&AudioMappingView::grid_scrolled, this, _1));
        Bind (wxEVT_SIZE, boost::bind (&AudioMappingView::sized, this, _1));
 
        _menu = new wxMenu;
@@ -370,11 +373,20 @@ AudioMappingView::setup_sizes ()
 
        _grid->AutoSize ();
        _left_labels->SetMinSize (wxSize (LEFT_WIDTH, _grid->GetSize().GetHeight()));
+       /* Allow it to scroll */
+       _left_labels->SetVirtualSize (1024, 1024);
        _top_labels->SetMinSize (wxSize (_grid->GetSize().GetWidth() + LEFT_WIDTH, top_height));
+       /* Allow it to scroll */
+       _top_labels->SetVirtualSize (1024, 1024);
        /* Try to make the _top_labels 'actual' size respect the minimum we just set */
        _top_labels->Fit ();
        _left_labels->Refresh ();
        _top_labels->Refresh ();
+
+       int x, y;
+       _grid->GetScrollPixelsPerUnit (&x, &y);
+       _top_labels->SetScrollRate (x, 0);
+       _left_labels->SetScrollRate (0, y);
 }
 
 void
@@ -388,8 +400,10 @@ AudioMappingView::paint_left_labels ()
        }
 
        int sx, sy;
-       _grid->CalcUnscrolledPosition (0, 0, &sx, &sy);
-       gc->Translate (0, -sy);
+       _left_labels->GetViewStart (&sx, &sy);
+       int rx, ry;
+       _grid->GetScrollPixelsPerUnit (&rx, &ry);
+       gc->Translate (0, -sy * ry);
 
        wxSize const size = dc.GetSize();
        int const half = size.GetWidth() / 2;
@@ -418,7 +432,7 @@ AudioMappingView::paint_left_labels ()
                dc.DrawRotatedText (
                        j->name,
                        half + (half - label_height) / 2,
-                       min (i->second, (i->second + i->first + label_width) / 2) - sy,
+                       min (i->second, (i->second + i->first + label_width) / 2),
                        90
                        );
 
@@ -441,7 +455,7 @@ AudioMappingView::paint_left_labels ()
        dc.DrawRotatedText (
                _("Content"),
                (half - overall_label_height) / 2,
-               min (size.GetHeight(), (size.GetHeight() + _grid->GetColLabelSize() + overall_label_width) / 2 - sy),
+               min (size.GetHeight(), (size.GetHeight() + _grid->GetColLabelSize() + overall_label_width) / 2),
                90
                );
 
@@ -462,8 +476,11 @@ AudioMappingView::paint_top_labels ()
        }
 
        int sx, sy;
-       _grid->CalcUnscrolledPosition (0, 0, &sx, &sy);
-       gc->Translate (-sx, 0);
+       _top_labels->GetViewStart (&sx, &sy);
+       int rx, ry;
+       _grid->GetScrollPixelsPerUnit (&rx, &ry);
+       int toff = sx * rx;
+       gc->Translate (-toff, 0);
 
        wxSize const size = dc.GetSize();
 
@@ -474,14 +491,25 @@ AudioMappingView::paint_top_labels ()
        wxCoord label_height;
        dc.GetTextExtent (_("DCP"), &label_width, &label_height);
 
-       dc.DrawText (_("DCP"), (size.GetWidth() + _grid->GetColSize(0) + LEFT_WIDTH - label_width) / 2 - sx, (size.GetHeight() - label_height) / 2);
+       dc.DrawText (_("DCP"), (size.GetWidth() + _grid->GetColSize(0) + LEFT_WIDTH - label_width) / 2 - toff, (size.GetHeight() - label_height) / 2);
 
        gc->SetPen (wxPen (wxColour (0, 0, 0)));
        wxGraphicsPath lines = gc->CreatePath();
-       lines.MoveToPoint (LEFT_WIDTH + _grid->GetColSize(0) - 1, 0);
-       lines.AddLineToPoint (LEFT_WIDTH + _grid->GetColSize(0) - 1, size.GetHeight());
-       lines.MoveToPoint (size.GetWidth() - 1, 0);
-       lines.AddLineToPoint (size.GetWidth() - 1, size.GetHeight());
+
+       int lhs = LEFT_WIDTH + _grid->GetColSize(0) - 1;
+       if (toff < (lhs - LEFT_WIDTH)) {
+               lines.MoveToPoint (lhs, 0);
+               lines.AddLineToPoint (lhs, size.GetHeight());
+       }
+
+       wxGridSizesInfo si = _grid->GetColSizes();
+       int total = 0;
+       for (int i = 0; i < _grid->GetNumberCols(); ++i) {
+               total += si.GetSize (i);
+       }
+       lines.MoveToPoint (LEFT_WIDTH + total, 0);
+       lines.AddLineToPoint (LEFT_WIDTH + total, size.GetHeight());
+
        gc->StrokePath (lines);
 
        delete gc;
@@ -522,10 +550,16 @@ AudioMappingView::mouse_moved_left_labels (wxMouseEvent& event)
 }
 
 void
-AudioMappingView::grid_scrolled ()
+AudioMappingView::grid_scrolled (wxScrollWinEvent& ev)
 {
-       _left_labels->Refresh ();
-       _left_labels->Update ();
-       _top_labels->Refresh ();
-       _top_labels->Update ();
+       int x, y;
+       _grid->GetViewStart (&x, &y);
+       if (ev.GetOrientation() == wxVERTICAL) {
+               _left_labels->Scroll (0, ev.GetPosition());
+       } else {
+               _top_labels->Scroll (ev.GetPosition(), 0);
+               /* Repaint the whole thing so that the left-hand line disappears where appropriate */
+               _top_labels->Refresh ();
+       }
+       ev.Skip ();
 }
index 18ab254..f45c248 100644 (file)
@@ -83,7 +83,7 @@ private:
        void paint_top_labels ();
        void mouse_moved_left_labels (wxMouseEvent &);
        void setup_sizes ();
-       void grid_scrolled ();
+       void grid_scrolled (wxScrollWinEvent& ev);
 
        void off ();
        void full ();
@@ -91,8 +91,8 @@ private:
        void edit ();
 
        wxGrid* _grid;
-       wxPanel* _left_labels;
-       wxPanel* _top_labels;
+       wxScrolledCanvas* _left_labels;
+       wxScrolledCanvas* _top_labels;
        AudioMapping _map;
 
        wxMenu* _menu;