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
46 typedef enum _RelPos
{
51 /* The DrawContext keeps information about the current drawing position and
52 * the previous one, so we can use both to draw lines.
54 * over : position for drawing over the middle line.
55 * middle : middle line position.
56 * under : position for drawing under the middle line.
58 * the modify_* are used to take into account that we should go forward
59 * when we draw a text, an arc or an icon, while it's unneeded when we
60 * draw a line or background.
62 * The modify_* positions are altered by the draw item functions.
68 GdkDrawable
*drawable
;
70 PangoLayout
*pango_layout
;
90 * Structure used to keep information about icons.
99 * The Item element is only used so the DrawOperation is modifiable by users.
100 * During drawing, only the Hook is needed.
102 struct _DrawOperation
{
108 * We define here each items that can be drawn, together with their
109 * associated priority. Many item types can have the same priority,
110 * it's only used for quicksorting the operations when we add a new one
111 * to the array of operations to perform. Lower priorities are executed
112 * first. So, for example, we may want to give background color a value
113 * of 10 while a line would have 20, so the background color, which
114 * is in fact a rectangle, does not hide the line.
117 static int Items_Priorities
[] = {
122 10 /* ITEM_BACKGROUND */
126 * Here are the different structures describing each item type that can be
127 * drawn. They contain the information necessary to draw the item : not the
128 * position (this is provided by the DrawContext), but the text, icon name,
129 * line width, color; all the properties of the specific items.
132 struct _PropertiesText
{
133 GdkColor
*foreground
;
134 GdkColor
*background
;
141 struct _PropertiesIcon
{
148 struct _PropertiesLine
{
155 struct _PropertiesArc
{
157 gint size
; /* We force circle by width = height */
162 struct _PropertiesBG
{
168 void draw_item( GdkDrawable
*drawable
,
172 LttvTracefileState
*tfs
,
173 LttvIAttribute
*attributes
);
176 * The tree of attributes used to store drawing operations goes like this :
179 * "facility-event_type"
189 * So if, for example, we want to add a hook to get called each time we
190 * receive an event that is in state LTTV_STATE_SYSCALL, we put the
191 * pointer to the GArray of DrawOperation in
192 * process_states/ "name associated with LTTV_STATE_SYSCALL"
196 * The add_operation has to do a quick sort by priority to keep the operations
197 * in the right order.
199 void add_operation( LttvIAttribute
*attributes
,
201 DrawOperation
*operation
);
204 * The del_operation seeks the array present at pathname (if any) and
205 * removes the DrawOperation if present. It returns 0 on success, -1
208 gint
del_operation( LttvIAttribute
*attributes
,
210 DrawOperation
*operation
);
213 * The clean_operations removes all operations present at a pathname.
214 * returns 0 on success, -1 if it fails.
216 gint
clean_operations( LttvIAttribute
*attributes
,
221 * The list_operations gives a pointer to the operation array associated
222 * with the pathname. It will be NULL if no operation is present.
224 void list_operations( LttvIAttribute
*attributes
,
231 * exec_operation executes the operations if present in the attributes, or
232 * do nothing if not present.
234 void exec_operations( LttvIAttribute
*attributes
,
239 * Functions to create Properties structures.
242 PropertiesText
*properties_text_create(
243 GdkColor
*foreground
,
244 GdkColor
*background
,
249 PropertiesIcon
*properties_icon_create(
255 PropertiesLine
*properties_line_create(
261 PropertiesArc
*properties_arc_create(
267 PropertiesBG
*properties_bg_create(
274 * Here follow the prototypes of the hook functions used to draw the
278 gboolean
draw_text( void *hook_data
, void *call_data
);
279 gboolean
draw_icon( void *hook_data
, void *call_data
);
280 gboolean
draw_line( void *hook_data
, void *call_data
);
281 gboolean
draw_arc( void *hook_data
, void *call_data
);
282 gboolean
draw_bg( void *hook_data
, void *call_data
);
285 #endif // _DRAW_ITEM_H