1 /******************************************************************************
4 * This file contains methods responsible for drawing a generic type of data
5 * in a drawable. Doing this generically will permit user defined drawing
6 * behavior in a later time.
8 * This file provides an API which is meant to be reusable for all viewers that
9 * need to show information in line, icon, text, background or point form in
10 * a drawable area having time for x axis. The y axis, in the control flow
11 * viewer case, is corresponding to the different processes, but it can be
12 * reused integrally for cpu, and eventually locks, buffers, network
13 * interfaces... What will differ between the viewers is the precise
14 * information which interests us. We may think that the most useful
15 * information for control flow are some specific events, like schedule
16 * change, and processes'states. It may differ for a cpu viewer : the
17 * interesting information could be more the execution mode of each cpu.
18 * This API in meant to make viewer's writers life easier : it will become
19 * a simple choice of icons and line types for the precise information
20 * the viewer has to provide (agremented with keeping supplementary records
21 * and modifying slightly the DrawContext to suit the needs.)
23 * We keep each data type in attributes, keys to specific information
24 * being formed from the GQuark corresponding to the information received.
25 * (facilities / facility_name / events / eventname.)
26 * (cpus/cpu_name, process_states/ps_name,
27 * execution_modes/em_name, execution_submodes/es_name).
28 * The goal is then to provide a generic way to print information on the
29 * screen for all this different information.
31 * Information can be printed as
33 * - text (text + color + size + position (over or under line)
34 * - icon (icon filename, corresponding to a loaded icon, accessible through
35 * a GQuark. Icons are loaded statically at the guiControlFlow level during
36 * module initialization and can be added on the fly if not present in the
37 * GQuark.) The habitual place for xpm icons is in
38 * ${prefix}/share/LinuxTraceToolkit.) + position (over or under line)
39 * - line (color, width, style)
40 * - Arc (big points) (color, size)
41 * - background color (color)
43 * An item is a leaf of the attributes tree. It is, in that case, including
44 * all kind of events categories we can have. It then associates each category
45 * with one or more actions (drawing something) or nothing.
47 * Each item has an array of hooks (hook list). Each hook represents an
48 * operation to perform. We seek the array each time we want to
49 * draw an item. We execute each operation in order. An operation type
50 * is associated with each hook to permit user listing and modification
51 * of these operations. The operation type is also used to find the
52 * corresponding priority for the sorting. Operation type and priorities
53 * are enum and a static int table.
55 * The array has to be sorted by priority each time we add a task in it.
56 * A priority is associated with each operation type. It permits
57 * to perform background color selection before line or text drawing. We also
58 * draw lines before text, so the text appears over the lines.
60 * Executing all the arrays of operations for a specific event (which
61 * implies information for state, event, cpu, execution mode and submode)
62 * has to be done in a same DrawContext. The goal there is to keep the offset
63 * of the text and icons over and under the middle line, so a specific
64 * event could be printed as ( R Si 0 for running, scheduled in, cpu 0 ),
65 * text being easy to replace with icons. The DrawContext is passed as
66 * call_data for the operation hooks.
68 * We use the lttv global attributes to keep track of the loaded icons.
69 * If we need an icon, we look for it in the icons / icon name pathname.
70 * If found, we use the pointer to it. If not, we load the pixmap in
71 * memory and set the pointer to the GdkPixmap in the attributes. The
72 * structure pointed to contains the pixmap and the mask bitmap.
74 * Author : Mathieu Desnoyers, October 2003
80 #include <lttv/hook.h>
81 #include <lttv/attribute.h>
82 #include <lttv/iattribute.h>
85 #include <lttv/processTrace.h>
86 #include <lttv/state.h>
91 #define MAX_PATH_LEN 256
93 /* drawing hook functions */
94 gboolean
draw_text( void *hook_data
, void *call_data
)
96 PropertiesText
*Properties
= (PropertiesText
*)hook_data
;
97 DrawContext
*Draw_Context
= (DrawContext
*)call_data
;
99 PangoContext
*context
;
101 PangoAttribute
*attribute
;
102 PangoFontDescription
*FontDesc
;// = pango_font_description_new();
104 PangoRectangle ink_rect
;
106 layout
= Draw_Context
->pango_layout
;
108 context
= pango_layout_get_context(layout
);
109 FontDesc
= pango_context_get_font_description(context
);
111 pango_font_description_set_size(FontDesc
, Properties
->size
*PANGO_SCALE
);
112 pango_layout_context_changed(layout
);
114 pango_layout_set_text(layout
, Properties
->text
, -1);
115 pango_layout_get_pixel_extents(layout
, &ink_rect
, NULL
);
116 switch(Properties
->position
) {
118 gdk_draw_layout_with_colors(Draw_Context
->drawable
,
120 Draw_Context
->current
->modify_over
->x
,
121 Draw_Context
->current
->modify_over
->y
,
122 layout
, Properties
->foreground
, Properties
->background
);
123 Draw_Context
->current
->modify_over
->x
+= ink_rect
.width
;
127 gdk_draw_layout_with_colors(Draw_Context
->drawable
,
129 Draw_Context
->current
->modify_middle
->x
,
130 Draw_Context
->current
->modify_middle
->y
,
131 layout
, Properties
->foreground
, Properties
->background
);
132 Draw_Context
->current
->modify_middle
->x
+= ink_rect
.width
;
135 gdk_draw_layout_with_colors(Draw_Context
->drawable
,
137 Draw_Context
->current
->modify_under
->x
,
138 Draw_Context
->current
->modify_under
->y
,
139 layout
, Properties
->foreground
, Properties
->background
);
140 Draw_Context
->current
->modify_under
->x
+= ink_rect
.width
;
148 /* To speed up the process, search in already loaded icons list first. Only
149 * load it if not present.
151 gboolean
draw_icon( void *hook_data
, void *call_data
)
153 PropertiesIcon
*Properties
= (PropertiesIcon
*)hook_data
;
154 DrawContext
*Draw_Context
= (DrawContext
*)call_data
;
156 LttvIAttribute
*attributes
= LTTV_IATTRIBUTE(lttv_global_attributes());
157 LttvAttributeValue value
;
158 gchar icon_name
[MAX_PATH_LEN
] = "icons/";
159 IconStruct
*icon_info
;
161 strcat(icon_name
, Properties
->icon_name
);
163 g_assert(lttv_iattribute_find_by_path(attributes
, icon_name
,
164 LTTV_POINTER
, &value
));
165 if(*(value
.v_pointer
) == NULL
)
167 *(value
.v_pointer
) = icon_info
= g_new(IconStruct
,1);
169 icon_info
->pixmap
= gdk_pixmap_create_from_xpm(Draw_Context
->drawable
,
170 &icon_info
->mask
, NULL
, Properties
->icon_name
);
174 icon_info
= *(value
.v_pointer
);
177 gdk_gc_set_clip_mask(Draw_Context
->gc
, icon_info
->mask
);
179 switch(Properties
->position
) {
181 gdk_gc_set_clip_origin(
183 Draw_Context
->current
->modify_over
->x
,
184 Draw_Context
->current
->modify_over
->y
);
185 gdk_draw_drawable(Draw_Context
->drawable
,
189 Draw_Context
->current
->modify_over
->x
,
190 Draw_Context
->current
->modify_over
->y
,
191 Properties
->width
, Properties
->height
);
193 Draw_Context
->current
->modify_over
->x
+= Properties
->width
;
197 gdk_gc_set_clip_origin(
199 Draw_Context
->current
->modify_middle
->x
,
200 Draw_Context
->current
->modify_middle
->y
);
201 gdk_draw_drawable(Draw_Context
->drawable
,
205 Draw_Context
->current
->modify_middle
->x
,
206 Draw_Context
->current
->modify_middle
->y
,
207 Properties
->width
, Properties
->height
);
209 Draw_Context
->current
->modify_middle
->x
+= Properties
->width
;
212 gdk_gc_set_clip_origin(
214 Draw_Context
->current
->modify_under
->x
,
215 Draw_Context
->current
->modify_under
->y
);
216 gdk_draw_drawable(Draw_Context
->drawable
,
220 Draw_Context
->current
->modify_under
->x
,
221 Draw_Context
->current
->modify_under
->y
,
222 Properties
->width
, Properties
->height
);
224 Draw_Context
->current
->modify_under
->x
+= Properties
->width
;
228 gdk_gc_set_clip_origin(Draw_Context
->gc
, 0, 0);
229 gdk_gc_set_clip_mask(Draw_Context
->gc
, NULL
);
234 gboolean
draw_line( void *hook_data
, void *call_data
)
236 PropertiesLine
*Properties
= (PropertiesLine
*)hook_data
;
237 DrawContext
*Draw_Context
= (DrawContext
*)call_data
;
238 //GdkGC *gc = gdk_gc_new(Draw_Context->drawable);
240 //gdk_gc_set_foreground(Draw_Context->gc, Properties->color);
241 gdk_gc_set_rgb_fg_color(Draw_Context
->gc
, Properties
->color
);
242 //gdk_gc_set_foreground(gc, Properties->color);
243 gdk_gc_set_line_attributes( Draw_Context
->gc
,
244 Properties
->line_width
,
249 switch(Properties
->position
) {
252 NULL
, Draw_Context
->drawable
,
253 Draw_Context
->previous
->over
->x
,
254 Draw_Context
->previous
->over
->y
,
255 Draw_Context
->current
->over
->x
,
256 Draw_Context
->current
->over
->y
,
261 NULL
, Draw_Context
->drawable
,
262 Draw_Context
->previous
->middle
->x
,
263 Draw_Context
->previous
->middle
->y
,
264 Draw_Context
->current
->middle
->x
,
265 Draw_Context
->current
->middle
->y
,
270 NULL
, Draw_Context
->drawable
,
271 Draw_Context
->previous
->under
->x
,
272 Draw_Context
->previous
->under
->y
,
273 Draw_Context
->current
->under
->x
,
274 Draw_Context
->current
->under
->y
,
285 gboolean
draw_arc( void *hook_data
, void *call_data
)
287 PropertiesArc
*Properties
= (PropertiesArc
*)hook_data
;
288 DrawContext
*Draw_Context
= (DrawContext
*)call_data
;
290 //gdk_gc_set_foreground(Draw_Context->gc, Properties->color);
291 gdk_gc_set_rgb_fg_color(Draw_Context
->gc
, Properties
->color
);
293 switch(Properties
->position
) {
295 gdk_draw_arc(Draw_Context
->drawable
, Draw_Context
->gc
,
297 Draw_Context
->current
->modify_over
->x
,
298 Draw_Context
->current
->modify_over
->y
,
299 Properties
->size
, Properties
->size
, 0, 360*64);
300 Draw_Context
->current
->modify_over
->x
+= Properties
->size
;
303 gdk_draw_arc(Draw_Context
->drawable
, Draw_Context
->gc
,
305 Draw_Context
->current
->modify_middle
->x
,
306 Draw_Context
->current
->modify_middle
->y
,
307 Properties
->size
, Properties
->size
, 0, 360*64);
308 Draw_Context
->current
->modify_middle
->x
+= Properties
->size
;
312 gdk_draw_arc(Draw_Context
->drawable
, Draw_Context
->gc
,
314 Draw_Context
->current
->modify_under
->x
,
315 Draw_Context
->current
->modify_under
->y
,
316 Properties
->size
, Properties
->size
, 0, 360*64);
317 Draw_Context
->current
->modify_under
->x
+= Properties
->size
;
326 gboolean
draw_bg( void *hook_data
, void *call_data
)
328 PropertiesBG
*Properties
= (PropertiesBG
*)hook_data
;
329 DrawContext
*Draw_Context
= (DrawContext
*)call_data
;
331 //gdk_gc_set_foreground(Draw_Context->gc, Properties->color);
332 gdk_gc_set_rgb_fg_color(Draw_Context
->gc
, Properties
->color
);
335 gdk_draw_rectangle(Draw_Context
->drawable
, Draw_Context
->gc
,
337 Draw_Context
->previous
->over
->x
,
338 Draw_Context
->previous
->over
->y
,
339 Draw_Context
->current
->over
->x
- Draw_Context
->previous
->over
->x
,
340 Draw_Context
->previous
->under
->y
);
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