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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 | * |
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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 | * |
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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). |
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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) |
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40 | * - Arc (big points) (color, size) |
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41 | * - background color (color) |
42 | * |
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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 | * |
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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 |
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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. |
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54 | * |
55 | * The array has to be sorted by priority each time we add a task in it. |
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56 | * A priority is associated with each operation type. It permits |
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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 ), |
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65 | * text being easy to replace with icons. The DrawContext is passed as |
66 | * call_data for the operation hooks. |
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67 | * |
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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 |
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71 | * memory and set the pointer to the GdkPixmap in the attributes. The |
72 | * structure pointed to contains the pixmap and the mask bitmap. |
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73 | * |
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74 | * Author : Mathieu Desnoyers, October 2003 |
75 | */ |
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76 | |
77 | #include <glib.h> |
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78 | #include <gtk/gtk.h> |
79 | #include <gdk/gdk.h> |
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80 | #include <lttv/hook.h> |
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81 | #include <lttv/attribute.h> |
82 | #include <lttv/iattribute.h> |
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83 | #include <string.h> |
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84 | |
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85 | #include <lttv/processTrace.h> |
86 | #include <lttv/state.h> |
87 | |
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88 | #include "Draw_Item.h" |
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89 | |
90 | |
91 | #define MAX_PATH_LEN 256 |
92 | |
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93 | /* Drawing hook functions */ |
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94 | gboolean draw_text( void *hook_data, void *call_data) |
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95 | { |
96 | PropertiesText *Properties = (PropertiesText*)hook_data; |
97 | DrawContext *Draw_Context = (DrawContext*)call_data; |
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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 | |
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108 | layout = Draw_Context->pango_layout; |
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109 | context = pango_layout_get_context(layout); |
110 | FontDesc = pango_context_get_font_description(context); |
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111 | pango_font_description_set_size(FontDesc, Properties->size*PANGO_SCALE); |
112 | |
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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 | |
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140 | return 0; |
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141 | } |
142 | |
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143 | |
144 | /* To speed up the process, search in already loaded icons list first. Only |
145 | * load it if not present. |
146 | */ |
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147 | gboolean draw_icon( void *hook_data, void *call_data) |
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148 | { |
149 | PropertiesIcon *Properties = (PropertiesIcon*)hook_data; |
150 | DrawContext *Draw_Context = (DrawContext*)call_data; |
151 | |
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152 | LttvIAttribute *attributes = LTTV_IATTRIBUTE(lttv_global_attributes()); |
153 | LttvAttributeValue value; |
154 | gchar icon_name[MAX_PATH_LEN] = "icons/"; |
155 | IconStruct *icon_info; |
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156 | |
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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 | |
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175 | switch(Properties->position) { |
176 | case OVER: |
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177 | gdk_gc_set_clip_origin( |
178 | Draw_Context->gc, |
179 | Draw_Context->Current->modify_over->x, |
180 | Draw_Context->Current->modify_over->y); |
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181 | gdk_draw_drawable(Draw_Context->drawable, |
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182 | Draw_Context->gc, |
183 | icon_info->pixmap, |
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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: |
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193 | gdk_gc_set_clip_origin( |
194 | Draw_Context->gc, |
195 | Draw_Context->Current->modify_middle->x, |
196 | Draw_Context->Current->modify_middle->y); |
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197 | gdk_draw_drawable(Draw_Context->drawable, |
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198 | Draw_Context->gc, |
199 | icon_info->pixmap, |
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200 | 0, 0, |
201 | Draw_Context->Current->modify_middle->x, |
202 | Draw_Context->Current->modify_middle->y, |
203 | Properties->width, Properties->height); |
204 | |
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205 | Draw_Context->Current->modify_middle->x += Properties->width; |
206 | break; |
207 | case UNDER: |
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208 | gdk_gc_set_clip_origin( |
209 | Draw_Context->gc, |
210 | Draw_Context->Current->modify_under->x, |
211 | Draw_Context->Current->modify_under->y); |
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212 | gdk_draw_drawable(Draw_Context->drawable, |
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213 | Draw_Context->gc, |
214 | icon_info->pixmap, |
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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 | |
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224 | gdk_gc_set_clip_origin(Draw_Context->gc, 0, 0); |
225 | gdk_gc_set_clip_mask(Draw_Context->gc, NULL); |
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226 | |
227 | return 0; |
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228 | } |
229 | |
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230 | gboolean draw_line( void *hook_data, void *call_data) |
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231 | { |
232 | PropertiesLine *Properties = (PropertiesLine*)hook_data; |
233 | DrawContext *Draw_Context = (DrawContext*)call_data; |
234 | |
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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; |
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274 | } |
275 | |
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276 | gboolean draw_arc( void *hook_data, void *call_data) |
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277 | { |
278 | PropertiesArc *Properties = (PropertiesArc*)hook_data; |
279 | DrawContext *Draw_Context = (DrawContext*)call_data; |
280 | |
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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; |
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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; |
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314 | } |
315 | |
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316 | gboolean draw_bg( void *hook_data, void *call_data) |
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317 | { |
318 | PropertiesBG *Properties = (PropertiesBG*)hook_data; |
319 | DrawContext *Draw_Context = (DrawContext*)call_data; |
320 | |
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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; |
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332 | } |
333 | |
334 | |