ltt/branches/poly/lttv/modules/gui/controlflow/drawing.h

   1 /* This file is part of the Linux Trace Toolkit viewer
   2  * Copyright (C) 2003-2004 Mathieu Desnoyers
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License Version 2 as
   6  * published by the Free Software Foundation;
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * along with this program; if not, write to the Free Software
  15  * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  16  * MA 02111-1307, USA.
  17  */
  18
  19
  20 #ifndef _DRAWING_H
  21 #define _DRAWING_H
  22
  23 #include <glib.h>
  24 #include <gdk/gdk.h>
  25 #include <gtk/gtk.h>
  26 #include <ltt/ltt.h>
  27 #include "cfv.h"
  28 #include "drawitem.h"
  29
  30
  31 #define SAFETY 50 // safety pixels at right and bottom of pixmap buffer
  32
  33 /* This part of the viewer does :
  34  * Draw horizontal lines, getting graphic context as arg.
  35  * Copy region of the screen into another.
  36  * Modify the boundaries to reflect a scale change. (resize)
  37  * Refresh the physical screen with the pixmap
  38  * A helper function is provided here to convert from time to process
  39  * identifier to pixels and the contrary (will be useful for mouse selection).
  40  * Insert an empty square in the drawing, moving the bottom part.
  41  *
  42  * Note: The last point is exactly why it would not be so easy to add the
  43  * vertical line functionnality as in the original version of LTT. In order
  44  * to do so, we should keep all processes in the list for the duration of
  45  * all the trace instead of dynamically adding and removing them when we
  46  * scroll. Another possibility is to redraw all the visible area when a new
  47  * process is added to the list. The second solution seems more appropriate
  48  * to me.
  49  *
  50  *
  51  * The pixmap used has the width of the physical window, but the height
  52  * of the shown processes.
  53  */
  54
  55 typedef struct _Drawing_t Drawing_t;
  56
  57 struct _Drawing_t {
  58   GtkWidget *vbox;
  59   GtkWidget *drawing_area;
  60   GtkWidget *ruler;
  61   GdkPixmap *pixmap;
  62   ControlFlowData *control_flow_data;
  63
  64   PangoLayout *pango_layout;
  65
  66   gint      height, width, depth;
  67   gboolean  data_injected;
  68
  69 };
  70
  71 Drawing_t *drawing_construct(ControlFlowData *control_flow_data);
  72 void drawing_destroy(Drawing_t *drawing);
  73
  74 GtkWidget *drawing_get_widget(Drawing_t *drawing);
  75 GtkWidget *drawing_get_drawing_area(Drawing_t *drawing);
  76
  77 void drawing_draw_line( Drawing_t *drawing,
  78       GdkPixmap *pixmap,
  79       guint x1, guint y1,
  80       guint x2, guint y2,
  81       GdkGC *GC);
  82
  83 //void drawing_copy( Drawing_t *drawing,
  84 //    guint xsrc, guint ysrc,
  85 //    guint xdest, guint ydest,
  86 //    guint width, guint height);
  87
  88 /* Insert a square corresponding to a new process in the list */
  89 void drawing_insert_square(Drawing_t *drawing,
  90         guint y,
  91         guint height);
  92
  93 /* Remove a square corresponding to a removed process in the list */
  94 void drawing_remove_square(Drawing_t *drawing,
  95         guint y,
  96         guint height);
  97
  98
  99 //void drawing_Resize(Drawing_t *drawing, guint h, guint w);
 100
 101 void convert_pixels_to_time(
 102     gint width,
 103     guint x,
 104     LttTime window_time_begin,
 105     LttTime window_time_end,
 106     LttTime *time);
 107
 108 void convert_time_to_pixels(
 109     LttTime window_time_begin,
 110     LttTime window_time_end,
 111     LttTime time,
 112     gint width,
 113     guint *x);
 114
 115 void drawing_update_ruler(Drawing_t *drawing, TimeWindow *time_window);
 116
 117 void drawing_data_request_end(Drawing_t *drawing,
 118                               TimeWindow req_time_window);
 119
 120
 121 #endif // _DRAWING_H