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annotate src/redraw_man.h @ 73:9ab15ebc9061

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Observer for mouse events
author Thinker K.F. Li <thinker@branda.to>
date Mon, 18 Aug 2008 01:59:26 +0800
parents 943acee7f346
children 4c2d83721bcc
rev   line source
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1 #ifndef __REDRAW_MAN_H_
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2 #define __REDRAW_MAN_H_
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4 #include <cairo.h>
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5 #include "tools.h"
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6 #include "mb_types.h"
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7 #include "observer.h"
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9 /*! \brief Manage redrawing of shapes (graphic elements).
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10 *
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11 * Every coord_t and geo_t object is assigned with a unique
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12 * incremental order. The order is a unsigned integer.
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13 * Every time a new coord_t or geo_t object is added, it is
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14 * assigned with a order number that 1 bigger than last one
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15 * until reaching maximum of unsigned integer.
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16 * When a maximum is meet, all coord_t or geo_t objects
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17 * are reasigned with a new order number from 1. It means
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18 * order numbers that have been assigned and then removed
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19 * later are recycled.
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20 *
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21 * Dirty flag is clear when the transformation matrix of a coord
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22 * object been recomputed or when a geo_t objects been redrawed.
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23 */
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24 typedef struct _redraw_man {
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25 #ifdef GEO_ORDER
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26 unsigned int next_geo_order;
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27 #endif
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28 int n_geos;
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29 STAILQ(geo_t) all_geos;
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31 unsigned int next_coord_order;
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32 int n_coords;
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33 coord_t *root_coord;
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34
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35 elmpool_t *geo_pool;
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36 elmpool_t *coord_pool;
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37 elmpool_t *shnode_pool;
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38 elmpool_t *observer_pool;
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39 elmpool_t *subject_pool;
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41 int max_dirty_coords;
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42 int n_dirty_coords;
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43 coord_t **dirty_coords;
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45 int max_dirty_geos;
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46 int n_dirty_geos;
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47 geo_t **dirty_geos;
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48
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49 int max_dirty_areas;
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50 int n_dirty_areas;
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51 area_t **dirty_areas;
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52
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53 int max_gen_geos;
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54 int n_gen_geos;
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55 geo_t **gen_geos; /* general geo list */
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57 cairo_t *cr;
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58 cairo_t *backend;
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60 ob_factory_t ob_factory;
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61 } redraw_man_t;
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63 extern int redraw_man_init(redraw_man_t *rdman, cairo_t *cr,
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64 cairo_t *backend);
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65 extern void redraw_man_destroy(redraw_man_t *rdman);
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66 extern int rdman_find_overlaid_shapes(redraw_man_t *rdman,
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67 geo_t *geo,
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68 geo_t ***overlays);
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69 extern int rdman_add_shape(redraw_man_t *rdman,
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70 shape_t *shape, coord_t *coord);
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71 extern int rdman_remove_shape(redraw_man_t *rdman, shape_t *shape);
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72 extern coord_t *rdman_coord_new(redraw_man_t *rdman, coord_t *parent);
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73 extern int rdman_coord_free(redraw_man_t *rdman, coord_t *coord);
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74 extern int rdman_coord_changed(redraw_man_t *rdman, coord_t *coord);
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75 extern int rdman_shape_changed(redraw_man_t *rdman, shape_t *shape);
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76 extern int rdman_redraw_changed(redraw_man_t *rdman);
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77 extern int rdman_redraw_all(redraw_man_t *rdman);
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78 extern int rdman_redraw_area(redraw_man_t *rdman, co_aix x, co_aix y,
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79 co_aix w, co_aix h);
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80 extern int rdman_force_clean(redraw_man_t *rdman);
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81 extern shnode_t *shnode_new(redraw_man_t *rdman, shape_t *shape);
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82 #define shnode_free(rdman, node) elmpool_elm_free((rdman)->shnode_pool, node)
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83 #define shnode_list_free(rdman, q) \
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84 do { \
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85 shnode_t *__node, *__last; \
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86 __last = STAILQ_HEAD(q); \
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87 if(__last == NULL) break; \
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88 for(__node = STAILQ_NEXT(shnode_t, next, __last); \
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89 __node != NULL; \
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90 __node = STAILQ_NEXT(shnode_t, next, __node)) { \
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91 shnode_free(rdman, __last); \
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92 __last = __node; \
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93 } \
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94 shnode_free(rdman, __last); \
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95 } while(0)
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96 #define _rdman_paint_child(rdman, paint, shape) \
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97 do { \
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98 shnode_t *__node; \
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99 if((shape)->fill != (paint) && \
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100 (shape)->stroke != (paint)) { \
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101 __node = shnode_new(rdman, shape); \
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102 STAILQ_INS_TAIL((paint)->members, \
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103 shnode_t, next, __node); \
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104 } \
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105 } while(0)
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106 #define rdman_paint_fill(rdman, paint, shape) \
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107 do { \
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108 _rdman_paint_child(rdman, paint, shape); \
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109 shape->fill = paint; \
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110 } while(0)
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111 #define rdman_paint_stroke(rdman, paint, shape) \
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112 do { \
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113 _rdman_paint_child(rdman, paint, shape); \
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114 shape->stroke = paint; \
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115 } while(0)
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116 extern int rdman_paint_changed(redraw_man_t *rdman, paint_t *paint);
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117
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118 extern shape_t *find_shape_at_pos(redraw_man_t *rdman,
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119 co_aix x, co_aix y, int *in_stroke);
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120 #define rdman_get_ob_factory(rdman) (&(rdman)->ob_factory)
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121
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122
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123 #endif /* __REDRAW_MAN_H_ */