From 51ce976d650988d1c8da27de465641b934e8b948 Mon Sep 17 00:00:00 2001
From: paolo <paolo@3ecf2c5c-341e-0410-92b4-d18e462d057c>
Date: Tue, 5 Sep 2006 23:49:55 +0000
Subject: [PATCH] - fixed redrawing bug

git-svn-id: svn://svn.gna.org/svn/sgpemv2/trunk@1014 3ecf2c5c-341e-0410-92b4-d18e462d057c
---
 src/simulation_widget.cc | 65 +++++++++++++++++++++-------------------
 src/simulation_widget.hh | 13 ++++++++
 2 files changed, 48 insertions(+), 30 deletions(-)

diff --git a/src/simulation_widget.cc b/src/simulation_widget.cc
index 3a16a70..452ce76 100644
--- a/src/simulation_widget.cc
+++ b/src/simulation_widget.cc
@@ -94,6 +94,8 @@ SimulationWidget::SimulationWidget(Simulation& simulation)
     _running_process_gradient = 0;
     _blocked_process_gradient = 0;
 
+    _partial_redraw = false;
+    _last_drawn = 0;
 }
 
 
@@ -111,14 +113,18 @@ SimulationWidget::update(const Simulation& /* changed_simulation */ )
 {
   // Force redraw
   //count_elements();
-  resize_redraw();
+  // nedd redraw only last
+  _partial_redraw = true;
+  // resize_redraw();
 }
 
 void
 SimulationWidget::update(const History& /* changed_history */ )
 {
   // Force redraw
-  //count_elements();
+  _last_drawn = 0;
+  _partial_redraw = false;
+  count_elements();
   resize_redraw();
 }
 
@@ -143,35 +149,17 @@ void
 SimulationWidget::draw_widget(cairo_t* ctx)
 {
   if(_n_proc<1) // nothing to draw
+  {
+    cairo_move_to(ctx, 10.0, 10.0);
+    cairo_show_text(ctx, "Simulation Widget: nothing to draw...");
     return;
+  }
 
   draw_names(ctx);
   draw_grid(ctx);
   draw_bars(ctx);
 }
 
-/*
-    // top margin in y units
-    _yu_top_margin = 1.0;
-
-    // left margin in x units
-    _xu_left_margin = 1.0;
-
-    // left margin in x units
-    _xu_left_graph_margin = 11.0;
-
-    // bar spacing in y units
-    _yu_process_bar_spacing = 1.0;
-
-    // process bar height in y units
-    _yu_process_bar_height = 1.0;
-
-    // thread bar spacing in y units
-    _yu_thread_bar_spacing = 0.2;
-
-    // thread bar height in y units
-    _yu_thread_bar_height = 0.6;
-*/
 
 void
 SimulationWidget::draw_names(cairo_t* ctx)
@@ -276,9 +264,13 @@ SimulationWidget::draw_grid(cairo_t* ctx)
   // - draw left VER line
   cairo_move_to(ctx, left_graph_margin, top_margin);
   cairo_rel_line_to(ctx, 0, graph_height);
-  // - draw right VER line
-  cairo_move_to(ctx, left_graph_margin + graph_width, top_margin);
-  cairo_rel_line_to(ctx, 0, graph_height);
+
+  if(_simulation->get_state()==Simulation::state_stopped)
+  {
+    // - draw right VER line
+    cairo_move_to(ctx, left_graph_margin + graph_width, top_margin);
+    cairo_rel_line_to(ctx, 0, graph_height);
+  }
   cairo_stroke(ctx);
 
   // draw and write time line
@@ -323,13 +315,24 @@ SimulationWidget::draw_bars(cairo_t* ctx)
   const double thread_bar_height   = _yu_thread_bar_height * _y_unit;
   const double process_height      = (_yu_process_bar_height + 2*_yu_process_bar_spacing) * _y_unit;
   const double thread_height       = (2.0*_yu_thread_bar_spacing+_yu_thread_bar_height) * _y_unit;
+  unsigned int from_time;
   // const double graph_width         = (2.0 + hist_front) * _x_unit;
   // const double graph_height        = _n_proc * process_height + (_show_threads?_n_thr:0) * thread_height;
 
 
   make_gradients();
 
-  for(unsigned int t=1; t<=hist_front; t++)
+  if(_partial_redraw && _last_drawn>0)
+  {
+    from_time = _last_drawn;
+  }
+  else
+  {
+    from_time = 1;
+  }
+
+  std::cout << " SimulationWidget::draw_bars from:" << from_time << "  to:" << hist_front << std::endl;
+  for(unsigned int t=from_time; t<=hist_front; t++)
   {
     // draw schedulables bars
     double xpos = left_graph_margin + t * _x_unit;  // left start of first process
@@ -361,7 +364,9 @@ SimulationWidget::draw_bars(cairo_t* ctx)
       } // ~  if(_show_threads)
       ypos += process_bar_spacing; // white row after bar
     } // ~  while(proc_iter!=processes.end())
-  } // ~  for(int t=0; t<=hist_size; t++)
+  } // ~  for(int t=0; t<=hist_front; t++)
+  _last_drawn = hist_front;
+  _partial_redraw = false;
 }
 
 void
@@ -646,7 +651,7 @@ SimulationWidget::calc_drawing_size(cairo_t* ctx, size_t& width, size_t& height)
     _y_unit=extents.height;
 
   // left margin, labels, graph
-  width  = (size_t)((_xu_left_graph_margin + _xu_left_graph_margin + 3.0 + pos) * _x_unit);
+  width  = (size_t)((_xu_left_graph_margin + 3.0 + pos) * _x_unit);
   // top margin, 
   height = (size_t)((_yu_top_margin + (_yu_process_bar_spacing*2.0+_yu_process_bar_height) * _n_proc + 3.0) * _y_unit);
   if(_show_threads)
diff --git a/src/simulation_widget.hh b/src/simulation_widget.hh
index bf63712..c38e926 100644
--- a/src/simulation_widget.hh
+++ b/src/simulation_widget.hh
@@ -122,6 +122,19 @@ namespace sgpem
     cairo_pattern_t* _ready_process_gradient;
     cairo_pattern_t* _running_process_gradient;
     cairo_pattern_t* _blocked_process_gradient;
+
+    /**
+      * Used to redraw partially the widget.
+      * If the redraw come from Simulation update this flag is true
+      * and are redrawn only the last time tics.
+      * If the redraw is needed by History update or resize this flag is false.
+      */
+    bool _partial_redraw;
+
+    /**
+      * Last time tic drawn.
+      */
+    unsigned int _last_drawn;
   };
 
 } //~ namespace sgpem