typo fix == for =
[lttv.git] / ltt / branches / poly / lttv / modules / guiControlFlow / Draw_Item.c
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cf6cb7e0 1/******************************************************************************
2 * Draw_Item.c
3 *
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.
7 *
b782dd11 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.)
22 *
f0728492 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).
cf6cb7e0 28 * The goal is then to provide a generic way to print information on the
29 * screen for all this different information.
30 *
31 * Information can be printed as
32 *
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)
189a5d08 40 * - Arc (big points) (color, size)
cf6cb7e0 41 * - background color (color)
42 *
189a5d08 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.
46 *
7d5ffafa 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
a2e850ff 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.
cf6cb7e0 54 *
55 * The array has to be sorted by priority each time we add a task in it.
a2e850ff 56 * A priority is associated with each operation type. It permits
cf6cb7e0 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.
59 *
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 ),
7d5ffafa 65 * text being easy to replace with icons. The DrawContext is passed as
66 * call_data for the operation hooks.
cf6cb7e0 67 *
b782dd11 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
1a31868c 71 * memory and set the pointer to the GdkPixmap in the attributes. The
72 * structure pointed to contains the pixmap and the mask bitmap.
b782dd11 73 *
cf6cb7e0 74 * Author : Mathieu Desnoyers, October 2003
75 */
7d5ffafa 76
77#include <glib.h>
09e2606f 78#include <gtk/gtk.h>
79#include <gdk/gdk.h>
7d5ffafa 80#include <lttv/hook.h>
f0728492 81#include <lttv/attribute.h>
82#include <lttv/iattribute.h>
1a31868c 83#include <string.h>
7d5ffafa 84
b782dd11 85#include <lttv/processTrace.h>
86#include <lttv/state.h>
87
09e2606f 88#include "Draw_Item.h"
1a31868c 89
90
91#define MAX_PATH_LEN 256
92
b782dd11 93/* Drawing hook functions */
4c69e0cc 94gboolean draw_text( void *hook_data, void *call_data)
b782dd11 95{
96 PropertiesText *Properties = (PropertiesText*)hook_data;
97 DrawContext *Draw_Context = (DrawContext*)call_data;
09e2606f 98
99 PangoContext *context;
100 PangoLayout *layout;
101 PangoFontDescription *FontDesc;// = pango_font_description_new();
102 gint Font_Size;
103 PangoRectangle ink_rect;
104
105 gdk_gc_set_foreground(Draw_Context->gc, Properties->foreground);
106 gdk_gc_set_background(Draw_Context->gc, Properties->background);
107
34b04882 108 layout = Draw_Context->pango_layout;
09e2606f 109 context = pango_layout_get_context(layout);
110 FontDesc = pango_context_get_font_description(context);
09e2606f 111 pango_font_description_set_size(FontDesc, Properties->size*PANGO_SCALE);
112
09e2606f 113 pango_layout_set_text(layout, Properties->Text, -1);
114 pango_layout_get_pixel_extents(layout, &ink_rect, NULL);
115 switch(Properties->position) {
116 case OVER:
117 gdk_draw_layout(Draw_Context->drawable, Draw_Context->gc,
118 Draw_Context->Current->modify_over->x,
119 Draw_Context->Current->modify_over->y,
120 layout);
121 Draw_Context->Current->modify_over->x += ink_rect.width;
122
123 break;
124 case MIDDLE:
125 gdk_draw_layout(Draw_Context->drawable, Draw_Context->gc,
126 Draw_Context->Current->modify_middle->x,
127 Draw_Context->Current->modify_middle->y,
128 layout);
129 Draw_Context->Current->modify_middle->x += ink_rect.width;
130 break;
131 case UNDER:
132 gdk_draw_layout(Draw_Context->drawable, Draw_Context->gc,
133 Draw_Context->Current->modify_under->x,
134 Draw_Context->Current->modify_under->y,
135 layout);
136 Draw_Context->Current->modify_under->x += ink_rect.width;
137 break;
138 }
139
09e2606f 140 return 0;
b782dd11 141}
142
1a31868c 143
144/* To speed up the process, search in already loaded icons list first. Only
145 * load it if not present.
146 */
4c69e0cc 147gboolean draw_icon( void *hook_data, void *call_data)
b782dd11 148{
149 PropertiesIcon *Properties = (PropertiesIcon*)hook_data;
150 DrawContext *Draw_Context = (DrawContext*)call_data;
151
1a31868c 152 LttvIAttribute *attributes = LTTV_IATTRIBUTE(lttv_global_attributes());
153 LttvAttributeValue value;
154 gchar icon_name[MAX_PATH_LEN] = "icons/";
155 IconStruct *icon_info;
8d088fb2 156
1a31868c 157 strcat(icon_name, Properties->icon_name);
158
159 g_assert(lttv_iattribute_find_by_path(attributes, icon_name,
160 LTTV_POINTER, &value));
161 if(*(value.v_pointer) == NULL)
162 {
163 *(value.v_pointer) = icon_info = g_new(IconStruct,1);
164
165 icon_info->pixmap = gdk_pixmap_create_from_xpm(Draw_Context->drawable,
166 &icon_info->mask, NULL, Properties->icon_name);
167 }
168 else
169 {
170 icon_info = *(value.v_pointer);
171 }
172
173 gdk_gc_set_clip_mask(Draw_Context->gc, icon_info->mask);
174
09e2606f 175 switch(Properties->position) {
176 case OVER:
1a31868c 177 gdk_gc_set_clip_origin(
178 Draw_Context->gc,
179 Draw_Context->Current->modify_over->x,
180 Draw_Context->Current->modify_over->y);
09e2606f 181 gdk_draw_drawable(Draw_Context->drawable,
1a31868c 182 Draw_Context->gc,
183 icon_info->pixmap,
09e2606f 184 0, 0,
185 Draw_Context->Current->modify_over->x,
186 Draw_Context->Current->modify_over->y,
187 Properties->width, Properties->height);
188
189 Draw_Context->Current->modify_over->x += Properties->width;
190
191 break;
192 case MIDDLE:
1a31868c 193 gdk_gc_set_clip_origin(
194 Draw_Context->gc,
195 Draw_Context->Current->modify_middle->x,
196 Draw_Context->Current->modify_middle->y);
09e2606f 197 gdk_draw_drawable(Draw_Context->drawable,
1a31868c 198 Draw_Context->gc,
199 icon_info->pixmap,
09e2606f 200 0, 0,
201 Draw_Context->Current->modify_middle->x,
202 Draw_Context->Current->modify_middle->y,
203 Properties->width, Properties->height);
204
09e2606f 205 Draw_Context->Current->modify_middle->x += Properties->width;
206 break;
207 case UNDER:
1a31868c 208 gdk_gc_set_clip_origin(
209 Draw_Context->gc,
210 Draw_Context->Current->modify_under->x,
211 Draw_Context->Current->modify_under->y);
09e2606f 212 gdk_draw_drawable(Draw_Context->drawable,
1a31868c 213 Draw_Context->gc,
214 icon_info->pixmap,
09e2606f 215 0, 0,
216 Draw_Context->Current->modify_under->x,
217 Draw_Context->Current->modify_under->y,
218 Properties->width, Properties->height);
219
220 Draw_Context->Current->modify_under->x += Properties->width;
221 break;
222 }
223
1a31868c 224 gdk_gc_set_clip_origin(Draw_Context->gc, 0, 0);
225 gdk_gc_set_clip_mask(Draw_Context->gc, NULL);
09e2606f 226
227 return 0;
b782dd11 228}
229
4c69e0cc 230gboolean draw_line( void *hook_data, void *call_data)
b782dd11 231{
232 PropertiesLine *Properties = (PropertiesLine*)hook_data;
233 DrawContext *Draw_Context = (DrawContext*)call_data;
234
09e2606f 235 gdk_gc_set_foreground(Draw_Context->gc, Properties->color);
236 gdk_gc_set_line_attributes( Draw_Context->gc,
237 Properties->line_width,
238 Properties->style,
239 GDK_CAP_BUTT,
240 GDK_JOIN_MITER);
241
242 switch(Properties->position) {
243 case OVER:
244 drawing_draw_line(
245 NULL, Draw_Context->drawable,
246 Draw_Context->Previous->over->x,
247 Draw_Context->Previous->over->y,
248 Draw_Context->Current->over->x,
249 Draw_Context->Current->over->y,
250 Draw_Context->gc);
251 break;
252 case MIDDLE:
253 drawing_draw_line(
254 NULL, Draw_Context->drawable,
255 Draw_Context->Previous->middle->x,
256 Draw_Context->Previous->middle->y,
257 Draw_Context->Current->middle->x,
258 Draw_Context->Current->middle->y,
259 Draw_Context->gc);
260 break;
261 case UNDER:
262 drawing_draw_line(
263 NULL, Draw_Context->drawable,
264 Draw_Context->Previous->under->x,
265 Draw_Context->Previous->under->y,
266 Draw_Context->Current->under->x,
267 Draw_Context->Current->under->y,
268 Draw_Context->gc);
269
270 break;
271 }
272
273 return 0;
b782dd11 274}
275
4c69e0cc 276gboolean draw_arc( void *hook_data, void *call_data)
b782dd11 277{
278 PropertiesArc *Properties = (PropertiesArc*)hook_data;
279 DrawContext *Draw_Context = (DrawContext*)call_data;
280
09e2606f 281 gdk_gc_set_foreground(Draw_Context->gc, Properties->color);
282
283 switch(Properties->position) {
284 case OVER:
285 gdk_draw_arc(Draw_Context->drawable, Draw_Context->gc,
286 Properties->filled,
287 Draw_Context->Current->modify_over->x,
288 Draw_Context->Current->modify_over->y,
289 Properties->size, Properties->size, 0, 360*64);
290 Draw_Context->Current->modify_over->x += Properties->size;
09e2606f 291 break;
292 case MIDDLE:
293 gdk_draw_arc(Draw_Context->drawable, Draw_Context->gc,
294 Properties->filled,
295 Draw_Context->Current->modify_middle->x,
296 Draw_Context->Current->modify_middle->y,
297 Properties->size, Properties->size, 0, 360*64);
298 Draw_Context->Current->modify_middle->x += Properties->size;
299
300 break;
301 case UNDER:
302 gdk_draw_arc(Draw_Context->drawable, Draw_Context->gc,
303 Properties->filled,
304 Draw_Context->Current->modify_under->x,
305 Draw_Context->Current->modify_under->y,
306 Properties->size, Properties->size, 0, 360*64);
307 Draw_Context->Current->modify_under->x += Properties->size;
308
309 break;
310 }
311
312
313 return 0;
b782dd11 314}
315
4c69e0cc 316gboolean draw_bg( void *hook_data, void *call_data)
b782dd11 317{
318 PropertiesBG *Properties = (PropertiesBG*)hook_data;
319 DrawContext *Draw_Context = (DrawContext*)call_data;
320
09e2606f 321 gdk_gc_set_foreground(Draw_Context->gc, Properties->color);
322
323
324 gdk_draw_rectangle(Draw_Context->drawable, Draw_Context->gc,
325 TRUE,
326 Draw_Context->Previous->over->x,
327 Draw_Context->Previous->over->y,
328 Draw_Context->Current->over->x - Draw_Context->Previous->over->x,
329 Draw_Context->Previous->under->y);
330
331 return 0;
b782dd11 332}
333
334
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