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
  68 };
  69
  70 Drawing_t *drawing_construct(ControlFlowData *control_flow_data);
  71 void drawing_destroy(Drawing_t *drawing);
  72
  73 GtkWidget *drawing_get_widget(Drawing_t *drawing);
  74 GtkWidget *drawing_get_drawing_area(Drawing_t *drawing);
  75
  76 //void drawing_Refresh (  Drawing_t *drawing,
  77 //      guint x, guint y,
  78 //      guint width, guint height);
  79
  80 void drawing_draw_line( Drawing_t *drawing,
  81       GdkPixmap *pixmap,
  82       guint x1, guint y1,
  83       guint x2, guint y2,
  84       GdkGC *GC);
  85
  86 //void drawing_copy( Drawing_t *drawing,
  87 //    guint xsrc, guint ysrc,
  88 //    guint xdest, guint ydest,
  89 //    guint width, guint height);
  90
  91 /* Insert a square corresponding to a new process in the list */
  92 void drawing_insert_square(Drawing_t *drawing,
  93         guint y,
  94         guint height);
  95
  96 /* Remove a square corresponding to a removed process in the list */
  97 void drawing_remove_square(Drawing_t *drawing,
  98         guint y,
  99         guint height);
 100
 101
 102 //void drawing_Resize(Drawing_t *drawing, guint h, guint w);
 103
 104 void convert_pixels_to_time(
 105     gint width,
 106     guint x,
 107     LttTime *window_time_begin,
 108     LttTime *window_time_end,
 109     LttTime *time);
 110
 111 void convert_time_to_pixels(
 112     LttTime window_time_begin,
 113     LttTime window_time_end,
 114     LttTime time,
 115     gint width,
 116     guint *x);
 117
 118 void drawing_update_ruler(Drawing_t *drawing, TimeWindow *time_window);
 119
 120 #endif // _DRAWING_H