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>
88 #include "Draw_Item.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 PangoFontDescription
*FontDesc
;// = pango_font_description_new();
103 PangoRectangle ink_rect
;
105 gdk_gc_set_foreground(Draw_Context
->gc
, Properties
->foreground
);
106 gdk_gc_set_background(Draw_Context
->gc
, Properties
->background
);
108 layout
= gtk_widget_create_pango_layout(GTK_WIDGET(Draw_Context
->drawable
), NULL
);
109 context
= pango_layout_get_context(layout
);
110 FontDesc
= pango_context_get_font_description(context
);
111 Font_Size
= pango_font_description_get_size(FontDesc
);
112 pango_font_description_set_size(FontDesc
, Properties
->size
*PANGO_SCALE
);
115 pango_layout_set_text(layout
, Properties
->Text
, -1);
116 pango_layout_get_pixel_extents(layout
, &ink_rect
, NULL
);
117 switch(Properties
->position
) {
119 gdk_draw_layout(Draw_Context
->drawable
, Draw_Context
->gc
,
120 Draw_Context
->Current
->modify_over
->x
,
121 Draw_Context
->Current
->modify_over
->y
,
123 Draw_Context
->Current
->modify_over
->x
+= ink_rect
.width
;
127 gdk_draw_layout(Draw_Context
->drawable
, Draw_Context
->gc
,
128 Draw_Context
->Current
->modify_middle
->x
,
129 Draw_Context
->Current
->modify_middle
->y
,
131 Draw_Context
->Current
->modify_middle
->x
+= ink_rect
.width
;
134 gdk_draw_layout(Draw_Context
->drawable
, Draw_Context
->gc
,
135 Draw_Context
->Current
->modify_under
->x
,
136 Draw_Context
->Current
->modify_under
->y
,
138 Draw_Context
->Current
->modify_under
->x
+= ink_rect
.width
;
143 pango_font_description_set_size(FontDesc
, Font_Size
);
150 /* To speed up the process, search in already loaded icons list first. Only
151 * load it if not present.
153 gboolean
draw_icon( void *hook_data
, void *call_data
)
155 PropertiesIcon
*Properties
= (PropertiesIcon
*)hook_data
;
156 DrawContext
*Draw_Context
= (DrawContext
*)call_data
;
158 LttvIAttribute
*attributes
= LTTV_IATTRIBUTE(lttv_global_attributes());
159 LttvAttributeValue value
;
160 gchar icon_name
[MAX_PATH_LEN
] = "icons/";
161 IconStruct
*icon_info
;
163 strcat(icon_name
, Properties
->icon_name
);
165 g_assert(lttv_iattribute_find_by_path(attributes
, icon_name
,
166 LTTV_POINTER
, &value
));
167 if(*(value
.v_pointer
) == NULL
)
169 *(value
.v_pointer
) = icon_info
= g_new(IconStruct
,1);
171 icon_info
->pixmap
= gdk_pixmap_create_from_xpm(Draw_Context
->drawable
,
172 &icon_info
->mask
, NULL
, Properties
->icon_name
);
176 icon_info
= *(value
.v_pointer
);
179 gdk_gc_set_clip_mask(Draw_Context
->gc
, icon_info
->mask
);
181 switch(Properties
->position
) {
183 gdk_gc_set_clip_origin(
185 Draw_Context
->Current
->modify_over
->x
,
186 Draw_Context
->Current
->modify_over
->y
);
187 gdk_draw_drawable(Draw_Context
->drawable
,
191 Draw_Context
->Current
->modify_over
->x
,
192 Draw_Context
->Current
->modify_over
->y
,
193 Properties
->width
, Properties
->height
);
195 Draw_Context
->Current
->modify_over
->x
+= Properties
->width
;
199 gdk_gc_set_clip_origin(
201 Draw_Context
->Current
->modify_middle
->x
,
202 Draw_Context
->Current
->modify_middle
->y
);
203 gdk_draw_drawable(Draw_Context
->drawable
,
207 Draw_Context
->Current
->modify_middle
->x
,
208 Draw_Context
->Current
->modify_middle
->y
,
209 Properties
->width
, Properties
->height
);
211 Draw_Context
->Current
->modify_middle
->x
+= Properties
->width
;
214 gdk_gc_set_clip_origin(
216 Draw_Context
->Current
->modify_under
->x
,
217 Draw_Context
->Current
->modify_under
->y
);
218 gdk_draw_drawable(Draw_Context
->drawable
,
222 Draw_Context
->Current
->modify_under
->x
,
223 Draw_Context
->Current
->modify_under
->y
,
224 Properties
->width
, Properties
->height
);
226 Draw_Context
->Current
->modify_under
->x
+= Properties
->width
;
230 gdk_gc_set_clip_origin(Draw_Context
->gc
, 0, 0);
231 gdk_gc_set_clip_mask(Draw_Context
->gc
, NULL
);
236 gboolean
draw_line( void *hook_data
, void *call_data
)
238 PropertiesLine
*Properties
= (PropertiesLine
*)hook_data
;
239 DrawContext
*Draw_Context
= (DrawContext
*)call_data
;
241 gdk_gc_set_foreground(Draw_Context
->gc
, Properties
->color
);
242 gdk_gc_set_line_attributes( Draw_Context
->gc
,
243 Properties
->line_width
,
248 switch(Properties
->position
) {
251 NULL
, Draw_Context
->drawable
,
252 Draw_Context
->Previous
->over
->x
,
253 Draw_Context
->Previous
->over
->y
,
254 Draw_Context
->Current
->over
->x
,
255 Draw_Context
->Current
->over
->y
,
260 NULL
, Draw_Context
->drawable
,
261 Draw_Context
->Previous
->middle
->x
,
262 Draw_Context
->Previous
->middle
->y
,
263 Draw_Context
->Current
->middle
->x
,
264 Draw_Context
->Current
->middle
->y
,
269 NULL
, Draw_Context
->drawable
,
270 Draw_Context
->Previous
->under
->x
,
271 Draw_Context
->Previous
->under
->y
,
272 Draw_Context
->Current
->under
->x
,
273 Draw_Context
->Current
->under
->y
,
282 gboolean
draw_arc( void *hook_data
, void *call_data
)
284 PropertiesArc
*Properties
= (PropertiesArc
*)hook_data
;
285 DrawContext
*Draw_Context
= (DrawContext
*)call_data
;
287 gdk_gc_set_foreground(Draw_Context
->gc
, Properties
->color
);
289 switch(Properties
->position
) {
291 gdk_draw_arc(Draw_Context
->drawable
, Draw_Context
->gc
,
293 Draw_Context
->Current
->modify_over
->x
,
294 Draw_Context
->Current
->modify_over
->y
,
295 Properties
->size
, Properties
->size
, 0, 360*64);
296 Draw_Context
->Current
->modify_over
->x
+= Properties
->size
;
299 gdk_draw_arc(Draw_Context
->drawable
, Draw_Context
->gc
,
301 Draw_Context
->Current
->modify_middle
->x
,
302 Draw_Context
->Current
->modify_middle
->y
,
303 Properties
->size
, Properties
->size
, 0, 360*64);
304 Draw_Context
->Current
->modify_middle
->x
+= Properties
->size
;
308 gdk_draw_arc(Draw_Context
->drawable
, Draw_Context
->gc
,
310 Draw_Context
->Current
->modify_under
->x
,
311 Draw_Context
->Current
->modify_under
->y
,
312 Properties
->size
, Properties
->size
, 0, 360*64);
313 Draw_Context
->Current
->modify_under
->x
+= Properties
->size
;
322 gboolean
draw_bg( void *hook_data
, void *call_data
)
324 PropertiesBG
*Properties
= (PropertiesBG
*)hook_data
;
325 DrawContext
*Draw_Context
= (DrawContext
*)call_data
;
327 gdk_gc_set_foreground(Draw_Context
->gc
, Properties
->color
);
330 gdk_draw_rectangle(Draw_Context
->drawable
, Draw_Context
->gc
,
332 Draw_Context
->Previous
->over
->x
,
333 Draw_Context
->Previous
->over
->y
,
334 Draw_Context
->Current
->over
->x
- Draw_Context
->Previous
->over
->x
,
335 Draw_Context
->Previous
->under
->y
);
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