[chronojump] On continuous capture last set is shown with "Previous set" message

[Xavier de Blas <xaviblas src gnome org>]

commit cc16968c553a7501bb8fa2269dc937e19bf17d16
Author: Xavier de Blas <xaviblas gmail com>
Date:   Tue Jul 12 16:54:52 2016 +0200

    On continuous capture last set is shown with "Previous set" message

 src/gui/encoder.cs |   41 +++++++++++++++++++++++++++++++++++++++--
 1 files changed, 39 insertions(+), 2 deletions(-)
---
diff --git a/src/gui/encoder.cs b/src/gui/encoder.cs
index 1f44177..dfa3f35 100644
--- a/src/gui/encoder.cs
+++ b/src/gui/encoder.cs
@@ -351,6 +351,7 @@ public partial class ChronoJumpWindow
        Gdk.GC pen_blue_encoder_capture;
        Gdk.GC pen_blue_dark_encoder_capture;
        Gdk.GC pen_blue_light_encoder_capture;
+       Gdk.GC pen_yellow_encoder_capture;
        
        Gdk.GC pen_white_encoder_capture;
        Gdk.GC pen_selected_encoder_capture;
@@ -4279,6 +4280,30 @@ public partial class ChronoJumpWindow
                        UtilGtk.ErasePaint(encoder_capture_curves_bars_drawingarea, 
encoder_capture_curves_bars_pixmap);
        }
 
+       private void plotCurvesGraphDoPlotMessage(string message) 
+       {
+               Pango.Layout layout_message = new Pango.Layout 
(encoder_capture_curves_bars_drawingarea.PangoContext);
+               layout_message.FontDescription = Pango.FontDescription.FromString ("Courier 12");
+               
+               int graphWidth=encoder_capture_curves_bars_drawingarea.Allocation.Width;
+               int graphHeight=encoder_capture_curves_bars_drawingarea.Allocation.Height;
+
+               layout_message.SetMarkup(message);
+               int textWidth = 1;
+               int textHeight = 1;
+               layout_message.GetPixelSize(out textWidth, out textHeight); 
+               
+               int xStart = Convert.ToInt32(graphWidth/2 - textWidth/2);
+               int yStart = Convert.ToInt32(graphHeight/2 - textHeight/2);
+
+               //draw rectangle behind
+               Rectangle rect = new Rectangle(xStart -3, yStart -3, textWidth +3, textHeight +3);
+               encoder_capture_curves_bars_pixmap.DrawRectangle(pen_yellow_encoder_capture, true, rect);
+               
+               //write text inside
+               encoder_capture_curves_bars_pixmap.DrawLayout (pen_black_encoder_capture, xStart, yStart, 
layout_message);
+       }
+
        int encoder_capture_curves_allocationXOld;
        int encoder_capture_curves_allocationYOld;
        bool encoder_capture_curves_sizeChanged;
@@ -4427,14 +4452,22 @@ public partial class ChronoJumpWindow
                                //don't need to be false because ItemToggled is deactivated during capture
                                treeview_encoder_capture_curves.Sensitive = true;
 
-                               prepareEncoderGraphs(true);
+                               //on continuous mode do not erase at beginning of capture in order to see 
last bars
+                               if(action == encoderActions.CAPTURE && checkbutton_encoder_cont.Active) {
+                                       prepareEncoderGraphs(false);
+                                       plotCurvesGraphDoPlotMessage("Previous set");
+                               } else
+                                       prepareEncoderGraphs(true);
+
                                //eccaCreated = false;
 
                                if(action == encoderActions.CAPTURE) {
                                        encoderStartVideoRecord();
 
                                        //remove treeview columns
-                                       treeviewEncoderCaptureRemoveColumns();
+                                       if( ! (action == encoderActions.CAPTURE && 
checkbutton_encoder_cont.Active) )
+                                               treeviewEncoderCaptureRemoveColumns();
+
                                        encoderCaptureStringR = new List<string>();
                                        encoderCaptureStringR.Add(
                                                ",series,exercise,mass,start,width,height," + 
@@ -4600,6 +4633,8 @@ public partial class ChronoJumpWindow
                pen_blue_light_encoder_capture = new Gdk.GC(encoder_capture_signal_drawingarea.GdkWindow);
                pen_white_encoder_capture = new Gdk.GC(encoder_capture_signal_drawingarea.GdkWindow);
                pen_selected_encoder_capture = new Gdk.GC(encoder_capture_signal_drawingarea.GdkWindow);
+               
+               pen_yellow_encoder_capture = new Gdk.GC(encoder_capture_curves_bars_drawingarea.GdkWindow);
 
                Gdk.Colormap colormap = Gdk.Colormap.System;
                colormap.AllocColor (ref UtilGtk.BLACK,true,true);
@@ -4613,6 +4648,7 @@ public partial class ChronoJumpWindow
                colormap.AllocColor (ref UtilGtk.BLUE_PLOTS,true,true);
                colormap.AllocColor (ref UtilGtk.BLUE_DARK,true,true);
                colormap.AllocColor (ref UtilGtk.BLUE_LIGHT,true,true);
+               colormap.AllocColor (ref UtilGtk.YELLOW,true,true);
                colormap.AllocColor (ref UtilGtk.WHITE,true,true);
                colormap.AllocColor (ref UtilGtk.SELECTED,true,true);
 
@@ -4627,6 +4663,7 @@ public partial class ChronoJumpWindow
                pen_blue_encoder_capture.Foreground = UtilGtk.BLUE_PLOTS;
                pen_blue_dark_encoder_capture.Foreground = UtilGtk.BLUE_DARK;
                pen_blue_light_encoder_capture.Foreground = UtilGtk.BLUE_LIGHT;
+               pen_yellow_encoder_capture.Foreground = UtilGtk.YELLOW;
                pen_white_encoder_capture.Foreground = UtilGtk.WHITE;
                pen_selected_encoder_capture.Foreground = UtilGtk.SELECTED;