1 /* This file is part of the Linux Trace Toolkit viewer
2 * Copyright (C) 2003-2004 Mathieu Desnoyers
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;
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.
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,
23 #include <lttv/state.h>
25 typedef struct _DrawContext DrawContext
;
26 typedef struct _DrawInfo DrawInfo
;
27 typedef struct _ItemInfo ItemInfo
;
29 typedef struct _IconStruct IconStruct
;
31 typedef struct _DrawOperation DrawOperation
;
34 typedef struct _PropertiesText PropertiesText
;
35 typedef struct _PropertiesIcon PropertiesIcon
;
36 typedef struct _PropertiesLine PropertiesLine
;
37 typedef struct _PropertiesArc PropertiesArc
;
38 typedef struct _PropertiesBG PropertiesBG
;
40 typedef enum _DrawableItems DrawableItems
;
42 ITEM_TEXT
, ITEM_ICON
, ITEM_LINE
, ITEM_POINT
, ITEM_BACKGROUND
45 typedef enum _RelPosX
{
49 typedef enum _RelPosY
{
54 /* The DrawContext keeps information about the current drawing position and
55 * the previous one, so we can use both to draw lines.
57 * over : position for drawing over the middle line.
58 * middle : middle line position.
59 * under : position for drawing under the middle line.
61 * the modify_* are used to take into account that we should go forward
62 * when we draw a text, an arc or an icon, while it's unneeded when we
63 * draw a line or background.
65 * The modify_* positions are altered by the draw item functions.
71 GdkDrawable
*drawable
;
73 PangoLayout
*pango_layout
;
107 * Structure used to keep information about icons.
116 * The Item element is only used so the DrawOperation is modifiable by users.
117 * During drawing, only the Hook is needed.
119 struct _DrawOperation
{
125 * We define here each items that can be drawn, together with their
126 * associated priority. Many item types can have the same priority,
127 * it's only used for quicksorting the operations when we add a new one
128 * to the array of operations to perform. Lower priorities are executed
129 * first. So, for example, we may want to give background color a value
130 * of 10 while a line would have 20, so the background color, which
131 * is in fact a rectangle, does not hide the line.
134 static int Items_Priorities
[] = {
139 10 /* ITEM_BACKGROUND */
143 * Here are the different structures describing each item type that can be
144 * drawn. They contain the information necessary to draw the item : not the
145 * position (this is provided by the DrawContext), but the text, icon name,
146 * line width, color; all the properties of the specific items.
149 struct _PropertiesText
{
150 GdkColor
*foreground
;
151 GdkColor
*background
;
161 struct _PropertiesIcon
{
171 struct _PropertiesLine
{
178 struct _PropertiesArc
{
180 gint size
; /* We force circle by width = height */
188 struct _PropertiesBG
{
194 void draw_item( GdkDrawable
*drawable
,
198 LttvTracefileState
*tfs
,
199 LttvIAttribute
*attributes
);
202 * The tree of attributes used to store drawing operations goes like this :
205 * "facility-event_type"
215 * So if, for example, we want to add a hook to get called each time we
216 * receive an event that is in state LTTV_STATE_SYSCALL, we put the
217 * pointer to the GArray of DrawOperation in
218 * process_states/ "name associated with LTTV_STATE_SYSCALL"
224 * The add_operation has to do a quick sort by priority to keep the operations
225 * in the right order.
227 void add_operation( LttvIAttribute
*attributes
,
229 DrawOperation
*operation
);
232 * The del_operation seeks the array present at pathname (if any) and
233 * removes the DrawOperation if present. It returns 0 on success, -1
236 gint
del_operation( LttvIAttribute
*attributes
,
238 DrawOperation
*operation
);
241 * The clean_operations removes all operations present at a pathname.
242 * returns 0 on success, -1 if it fails.
244 gint
clean_operations( LttvIAttribute
*attributes
,
249 * The list_operations gives a pointer to the operation array associated
250 * with the pathname. It will be NULL if no operation is present.
252 void list_operations( LttvIAttribute
*attributes
,
259 * exec_operation executes the operations if present in the attributes, or
260 * do nothing if not present.
262 void exec_operations( LttvIAttribute
*attributes
,
267 * Here follow the prototypes of the hook functions used to draw the
271 __inline__ gboolean
draw_text( void *hook_data
, void *call_data
);
272 __inline__ gboolean
draw_icon( void *hook_data
, void *call_data
);
273 __inline__ gboolean
draw_line( void *hook_data
, void *call_data
);
274 __inline__ gboolean
draw_arc( void *hook_data
, void *call_data
);
275 __inline__ gboolean
draw_bg( void *hook_data
, void *call_data
);
278 #endif // _DRAW_ITEM_H