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,
21 /******************************************************************************
24 * This file contains methods responsible for drawing a generic type of data
25 * in a drawable. Doing this generically will permit user defined drawing
26 * behavior in a later time.
28 * This file provides an API which is meant to be reusable for all viewers that
29 * need to show information in line, icon, text, background or point form in
30 * a drawable area having time for x axis. The y axis, in the control flow
31 * viewer case, is corresponding to the different processes, but it can be
32 * reused integrally for cpu, and eventually locks, buffers, network
33 * interfaces... What will differ between the viewers is the precise
34 * information which interests us. We may think that the most useful
35 * information for control flow are some specific events, like schedule
36 * change, and processes'states. It may differ for a cpu viewer : the
37 * interesting information could be more the execution mode of each cpu.
38 * This API in meant to make viewer's writers life easier : it will become
39 * a simple choice of icons and line types for the precise information
40 * the viewer has to provide (agremented with keeping supplementary records
41 * and modifying slightly the DrawContext to suit the needs.)
43 * We keep each data type in attributes, keys to specific information
44 * being formed from the GQuark corresponding to the information received.
45 * (facilities / facility_name / events / eventname.)
46 * (cpus/cpu_name, process_states/ps_name,
47 * execution_modes/em_name, execution_submodes/es_name).
48 * The goal is then to provide a generic way to print information on the
49 * screen for all this different information.
51 * Information can be printed as
53 * - text (text + color + size + position (over or under line)
54 * - icon (icon filename, corresponding to a loaded icon, accessible through
55 * a GQuark. Icons are loaded statically at the guiControlFlow level during
56 * module initialization and can be added on the fly if not present in the
57 * GQuark.) The habitual place for xpm icons is in
58 * ${prefix}/share/LinuxTraceToolkit.) + position (over or under line)
59 * - line (color, width, style)
60 * - Arc (big points) (color, size)
61 * - background color (color)
63 * An item is a leaf of the attributes tree. It is, in that case, including
64 * all kind of events categories we can have. It then associates each category
65 * with one or more actions (drawing something) or nothing.
67 * Each item has an array of hooks (hook list). Each hook represents an
68 * operation to perform. We seek the array each time we want to
69 * draw an item. We execute each operation in order. An operation type
70 * is associated with each hook to permit user listing and modification
71 * of these operations. The operation type is also used to find the
72 * corresponding priority for the sorting. Operation type and priorities
73 * are enum and a static int table.
75 * The array has to be sorted by priority each time we add a task in it.
76 * A priority is associated with each operation type. It permits
77 * to perform background color selection before line or text drawing. We also
78 * draw lines before text, so the text appears over the lines.
80 * Executing all the arrays of operations for a specific event (which
81 * implies information for state, event, cpu, execution mode and submode)
82 * has to be done in a same DrawContext. The goal there is to keep the offset
83 * of the text and icons over and under the middle line, so a specific
84 * event could be printed as ( R Si 0 for running, scheduled in, cpu 0 ),
85 * text being easy to replace with icons. The DrawContext is passed as
86 * call_data for the operation hooks.
88 * We use the lttv global attributes to keep track of the loaded icons.
89 * If we need an icon, we look for it in the icons / icon name pathname.
90 * If found, we use the pointer to it. If not, we load the pixmap in
91 * memory and set the pointer to the GdkPixmap in the attributes. The
92 * structure pointed to contains the pixmap and the mask bitmap.
94 * Author : Mathieu Desnoyers, October 2003
104 #include <lttv/hook.h>
105 #include <lttv/attribute.h>
106 #include <lttv/iattribute.h>
109 #include <lttv/tracecontext.h>
110 #include <lttv/state.h>
111 #include <lttv/lttv.h>
113 #include "drawitem.h"
116 #define MAX_PATH_LEN 256
118 /* drawing hook functions */
119 gboolean
draw_text( void *hook_data
, void *call_data
)
121 PropertiesText
*properties
= (PropertiesText
*)hook_data
;
122 DrawContext
*draw_context
= (DrawContext
*)call_data
;
124 PangoContext
*context
;
126 PangoFontDescription
*font_desc
;// = pango_font_description_new();
127 PangoRectangle ink_rect
;
129 layout
= draw_context
->pango_layout
;
131 context
= pango_layout_get_context(layout
);
132 font_desc
= pango_context_get_font_description(context
);
134 pango_font_description_set_size(font_desc
, properties
->size
*PANGO_SCALE
);
135 pango_layout_context_changed(layout
);
137 pango_layout_set_text(layout
, properties
->text
, -1);
138 pango_layout_get_pixel_extents(layout
, &ink_rect
, NULL
);
142 gboolean enough_space
= FALSE
;
143 gint width
= ink_rect
.width
;
145 switch(properties
->position
.x
) {
147 x
= draw_context
->drawinfo
.start
.x
;
148 switch(properties
->position
.y
) {
150 offset
= &draw_context
->drawinfo
.start
.offset
.over
;
151 x
+= draw_context
->drawinfo
.start
.offset
.over
;
152 y
= draw_context
->drawinfo
.y
.over
;
155 offset
= &draw_context
->drawinfo
.start
.offset
.middle
;
156 x
+= draw_context
->drawinfo
.start
.offset
.middle
;
157 y
= draw_context
->drawinfo
.y
.middle
;
160 offset
= &draw_context
->drawinfo
.start
.offset
.under
;
161 x
+= draw_context
->drawinfo
.start
.offset
.under
;
162 y
= draw_context
->drawinfo
.y
.under
;
165 /* verify if there is enough space to draw */
166 if(unlikely(x
+ width
<= draw_context
->drawinfo
.end
.x
)) {
172 x
= draw_context
->drawinfo
.end
.x
;
173 switch(properties
->position
.y
) {
175 offset
= &draw_context
->drawinfo
.end
.offset
.over
;
176 x
+= draw_context
->drawinfo
.end
.offset
.over
;
177 y
= draw_context
->drawinfo
.y
.over
;
180 offset
= &draw_context
->drawinfo
.end
.offset
.middle
;
181 x
+= draw_context
->drawinfo
.end
.offset
.middle
;
182 y
= draw_context
->drawinfo
.y
.middle
;
185 offset
= &draw_context
->drawinfo
.end
.offset
.under
;
186 x
+= draw_context
->drawinfo
.end
.offset
.under
;
187 y
= draw_context
->drawinfo
.y
.under
;
190 /* verify if there is enough space to draw */
191 if(unlikely(x
- width
>= draw_context
->drawinfo
.start
.x
)) {
198 if(unlikely(enough_space
))
199 gdk_draw_layout_with_colors(draw_context
->drawable
,
203 layout
, properties
->foreground
, properties
->background
);
209 /* To speed up the process, search in already loaded icons list first. Only
210 * load it if not present.
212 gboolean
draw_icon( void *hook_data
, void *call_data
)
214 PropertiesIcon
*properties
= (PropertiesIcon
*)hook_data
;
215 DrawContext
*draw_context
= (DrawContext
*)call_data
;
217 LttvIAttribute
*attributes
= LTTV_IATTRIBUTE(lttv_global_attributes());
218 LttvAttributeValue value
;
219 gchar icon_name
[MAX_PATH_LEN
] = "icons/";
220 IconStruct
*icon_info
;
222 strcat(icon_name
, properties
->icon_name
);
224 g_assert(lttv_iattribute_find_by_path(attributes
, icon_name
,
225 LTTV_POINTER
, &value
));
226 if(unlikely(*(value
.v_pointer
) == NULL
))
228 *(value
.v_pointer
) = icon_info
= g_new(IconStruct
,1);
230 icon_info
->pixmap
= gdk_pixmap_create_from_xpm(draw_context
->drawable
,
231 &icon_info
->mask
, NULL
, properties
->icon_name
);
235 icon_info
= *(value
.v_pointer
);
240 gboolean enough_space
= FALSE
;
241 gint width
= properties
->width
;
243 switch(properties
->position
.x
) {
245 x
= draw_context
->drawinfo
.start
.x
;
246 switch(properties
->position
.y
) {
248 offset
= &draw_context
->drawinfo
.start
.offset
.over
;
249 x
+= draw_context
->drawinfo
.start
.offset
.over
;
250 y
= draw_context
->drawinfo
.y
.over
;
253 offset
= &draw_context
->drawinfo
.start
.offset
.middle
;
254 x
+= draw_context
->drawinfo
.start
.offset
.middle
;
255 y
= draw_context
->drawinfo
.y
.middle
;
258 offset
= &draw_context
->drawinfo
.start
.offset
.under
;
259 x
+= draw_context
->drawinfo
.start
.offset
.under
;
260 y
= draw_context
->drawinfo
.y
.under
;
263 /* verify if there is enough space to draw */
264 if(unlikely(x
+ width
<= draw_context
->drawinfo
.end
.x
)) {
270 x
= draw_context
->drawinfo
.end
.x
;
271 switch(properties
->position
.y
) {
273 offset
= &draw_context
->drawinfo
.end
.offset
.over
;
274 x
+= draw_context
->drawinfo
.end
.offset
.over
;
275 y
= draw_context
->drawinfo
.y
.over
;
278 offset
= &draw_context
->drawinfo
.end
.offset
.middle
;
279 x
+= draw_context
->drawinfo
.end
.offset
.middle
;
280 y
= draw_context
->drawinfo
.y
.middle
;
283 offset
= &draw_context
->drawinfo
.end
.offset
.under
;
284 x
+= draw_context
->drawinfo
.end
.offset
.under
;
285 y
= draw_context
->drawinfo
.y
.under
;
288 /* verify if there is enough space to draw */
289 if(unlikely(x
- width
>= draw_context
->drawinfo
.start
.x
)) {
296 if(unlikely(enough_space
)) {
297 gdk_gc_set_clip_mask(draw_context
->gc
, icon_info
->mask
);
299 gdk_gc_set_clip_origin(
303 gdk_draw_drawable(draw_context
->drawable
,
309 properties
->width
, properties
->height
);
311 gdk_gc_set_clip_origin(draw_context
->gc
, 0, 0);
312 gdk_gc_set_clip_mask(draw_context
->gc
, NULL
);
317 gboolean
draw_line( void *hook_data
, void *call_data
)
319 PropertiesLine
*properties
= (PropertiesLine
*)hook_data
;
320 DrawContext
*draw_context
= (DrawContext
*)call_data
;
322 gdk_gc_set_foreground(draw_context
->gc
, &properties
->color
);
323 //gdk_gc_set_rgb_fg_color(draw_context->gc, &properties->color);
324 gdk_gc_set_line_attributes( draw_context
->gc
,
325 properties
->line_width
,
329 //g_critical("DRAWING LINE : x1: %i, y1: %i, x2:%i, y2:%i",
330 // draw_context->previous->middle->x,
331 // draw_context->previous->middle->y,
332 // draw_context->drawinfo.middle.x,
333 // draw_context->drawinfo.middle.y);
335 gint x_begin
=0, x_end
=0, y
=0;
337 x_begin
= draw_context
->drawinfo
.start
.x
;
338 x_end
= draw_context
->drawinfo
.end
.x
;
340 switch(properties
->y
) {
342 y
= draw_context
->drawinfo
.y
.over
;
345 y
= draw_context
->drawinfo
.y
.middle
;
348 y
= draw_context
->drawinfo
.y
.under
;
353 NULL
, draw_context
->drawable
,
363 gboolean
draw_arc( void *hook_data
, void *call_data
)
365 PropertiesArc
*properties
= (PropertiesArc
*)hook_data
;
366 DrawContext
*draw_context
= (DrawContext
*)call_data
;
368 gdk_gc_set_foreground(draw_context
->gc
, properties
->color
);
369 //gdk_gc_set_rgb_fg_color(draw_context->gc, properties->color);
373 gboolean enough_space
= FALSE
;
374 gint width
= properties
->size
;
376 switch(properties
->position
.x
) {
378 x
= draw_context
->drawinfo
.start
.x
;
379 switch(properties
->position
.y
) {
381 offset
= &draw_context
->drawinfo
.start
.offset
.over
;
382 x
+= draw_context
->drawinfo
.start
.offset
.over
;
383 y
= draw_context
->drawinfo
.y
.over
;
386 offset
= &draw_context
->drawinfo
.start
.offset
.middle
;
387 x
+= draw_context
->drawinfo
.start
.offset
.middle
;
388 y
= draw_context
->drawinfo
.y
.middle
;
391 offset
= &draw_context
->drawinfo
.start
.offset
.under
;
392 x
+= draw_context
->drawinfo
.start
.offset
.under
;
393 y
= draw_context
->drawinfo
.y
.under
;
396 /* verify if there is enough space to draw */
397 if(unlikely(x
+ width
<= draw_context
->drawinfo
.end
.x
)) {
403 x
= draw_context
->drawinfo
.end
.x
;
404 switch(properties
->position
.y
) {
406 offset
= &draw_context
->drawinfo
.end
.offset
.over
;
407 x
+= draw_context
->drawinfo
.end
.offset
.over
;
408 y
= draw_context
->drawinfo
.y
.over
;
411 offset
= &draw_context
->drawinfo
.end
.offset
.middle
;
412 x
+= draw_context
->drawinfo
.end
.offset
.middle
;
413 y
= draw_context
->drawinfo
.y
.middle
;
416 offset
= &draw_context
->drawinfo
.end
.offset
.under
;
417 x
+= draw_context
->drawinfo
.end
.offset
.under
;
418 y
= draw_context
->drawinfo
.y
.under
;
421 /* verify if there is enough space to draw */
422 if(unlikely(x
- width
>= draw_context
->drawinfo
.start
.x
)) {
429 if(unlikely(enough_space
))
430 gdk_draw_arc(draw_context
->drawable
, draw_context
->gc
,
434 properties
->size
, properties
->size
, 0, 360*64);
439 gboolean
draw_bg( void *hook_data
, void *call_data
)
441 PropertiesBG
*properties
= (PropertiesBG
*)hook_data
;
442 DrawContext
*draw_context
= (DrawContext
*)call_data
;
444 gdk_gc_set_foreground(draw_context
->gc
, properties
->color
);
445 //gdk_gc_set_rgb_fg_color(draw_context->gc, properties->color);
447 //g_critical("DRAWING RECT : x: %i, y: %i, w:%i, h:%i, val1 :%i, val2:%i ",
448 // draw_context->previous->over->x,
449 // draw_context->previous->over->y,
450 // draw_context->drawinfo.over.x - draw_context->previous->over->x,
451 // draw_context->previous->under->y-draw_context->previous->over->y,
452 // draw_context->drawinfo.over.x,
453 // draw_context->previous->over->x);
454 gdk_draw_rectangle(draw_context
->drawable
, draw_context
->gc
,
456 draw_context
->drawinfo
.start
.x
,
457 draw_context
->drawinfo
.y
.over
,
458 draw_context
->drawinfo
.end
.x
- draw_context
->drawinfo
.start
.x
,
459 draw_context
->drawinfo
.y
.under
- draw_context
->drawinfo
.y
.over
);
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