Mercurial > MadButterfly
annotate dox/arch.h @ 198:f9d507a3e1d9
Add event observer which listen to one event type only.
| author | wycc@wycc-desktop |
|---|---|
| date | Fri, 05 Dec 2008 22:12:18 +0800 |
| parents | e89512d6fa0a |
| children |
| rev | line source |
|---|---|
| 111 | 1 /*! \page archi Internal Architecture |
| 2 * | |
| 3 * \image html core.png | |
| 4 * Above graphic is relationship among major objects of MadButterfly. | |
| 5 * \ref redraw_man_t, redraw manager, is supposed to manage graphic elements, | |
| 6 * shapes, and decide when and who to redraw on the output screen. | |
| 7 * | |
| 8 * \ref shape_t is base-type for all graphic objects. It can be a path, | |
| 9 * a text, a ellipse, ..., or an image. When the states or attributes of | |
| 10 * an graphic | |
| 11 * object changed, managing redraw_man_t, the one that manages the graphic | |
| 12 * object, will be notified. The redraw_man_t will schedule a redrawing | |
| 13 * for every | |
| 14 * dirty objects, changed ones, and relative objects. The relative objects | |
| 15 * are objects effected by changed ones. For example, part of a relative | |
| 16 * object may be hidden before changing, but it is re-explored after chaning. | |
| 17 * The explored part of the object must be redrawed. | |
| 18 * | |
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e89512d6fa0a
Change doxygen comment to reflect changes of relation-ship.
Thinker K.F. Li <thinker@branda.to>
parents:
111
diff
changeset
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19 * The shape of shape objects are vary from type to type. To simplize |
| 111 | 20 * the problem, we use a rectangle to model the area occupied by an object. |
| 21 * \ref geo_t is the one used to model the rectangle. Shape objects should | |
| 22 * update associated \ref geo_t objects to reflect changing of them-self. | |
| 23 * | |
| 24 * \ref coord_t is used to model transformation in coordinate system. | |
| 25 * A \ref coord_t is actually an transform matrix with additional | |
| 26 * informations. \ref coord_t | |
| 27 * objects are organized as a tree according hierachy of group tags in | |
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e89512d6fa0a
Change doxygen comment to reflect changes of relation-ship.
Thinker K.F. Li <thinker@branda.to>
parents:
111
diff
changeset
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28 * a SVG file. coord_t has a member variable, called before_pmem, that |
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e89512d6fa0a
Change doxygen comment to reflect changes of relation-ship.
Thinker K.F. Li <thinker@branda.to>
parents:
111
diff
changeset
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29 * is relative position in parent coord. \ref coord_t::before_pmem stands for |
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e89512d6fa0a
Change doxygen comment to reflect changes of relation-ship.
Thinker K.F. Li <thinker@branda.to>
parents:
111
diff
changeset
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30 * "before parent member", it is an index to the list of member shapes |
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e89512d6fa0a
Change doxygen comment to reflect changes of relation-ship.
Thinker K.F. Li <thinker@branda.to>
parents:
111
diff
changeset
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31 * of parent coord. Members of a coord is shape tags they are children of |
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e89512d6fa0a
Change doxygen comment to reflect changes of relation-ship.
Thinker K.F. Li <thinker@branda.to>
parents:
111
diff
changeset
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32 * the "g" tag of the coord corresponding. \ref coord_t::before_pmem means |
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e89512d6fa0a
Change doxygen comment to reflect changes of relation-ship.
Thinker K.F. Li <thinker@branda.to>
parents:
111
diff
changeset
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33 * "g" of the coord is before the indexed member of parent. |
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e89512d6fa0a
Change doxygen comment to reflect changes of relation-ship.
Thinker K.F. Li <thinker@branda.to>
parents:
111
diff
changeset
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34 * |
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e89512d6fa0a
Change doxygen comment to reflect changes of relation-ship.
Thinker K.F. Li <thinker@branda.to>
parents:
111
diff
changeset
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35 * \image html geom_relation.png |
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e89512d6fa0a
Change doxygen comment to reflect changes of relation-ship.
Thinker K.F. Li <thinker@branda.to>
parents:
111
diff
changeset
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36 * |
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e89512d6fa0a
Change doxygen comment to reflect changes of relation-ship.
Thinker K.F. Li <thinker@branda.to>
parents:
111
diff
changeset
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37 * It is possible to have more than one coord with the same |
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e89512d6fa0a
Change doxygen comment to reflect changes of relation-ship.
Thinker K.F. Li <thinker@branda.to>
parents:
111
diff
changeset
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38 * \ref coord_t::before_pmem value and as children of a coord. It means |
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e89512d6fa0a
Change doxygen comment to reflect changes of relation-ship.
Thinker K.F. Li <thinker@branda.to>
parents:
111
diff
changeset
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39 * all children with the same coord_t::before_pmem value are all before |
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e89512d6fa0a
Change doxygen comment to reflect changes of relation-ship.
Thinker K.F. Li <thinker@branda.to>
parents:
111
diff
changeset
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40 * nth member, after (n-1)th member, and they are in order of them-self |
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e89512d6fa0a
Change doxygen comment to reflect changes of relation-ship.
Thinker K.F. Li <thinker@branda.to>
parents:
111
diff
changeset
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41 * in the children list. |
| 111 | 42 * |
| 43 * Colors or patterns used to stroke or fill shapes are described | |
| 44 * by \ref paint_t . Every shape object has a paint, but a paint object | |
| 45 * can be used by multiple shape objects. Once a paint is changed, all | |
| 46 * objects that associate with the paint are dirty. They will be scheduled | |
| 47 * by associated \ref redraw_man_t object to update graphics on | |
| 48 * output screen. | |
| 49 * | |
| 50 */ |