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annotate src/redraw_man.h @ 23:56f592f56ff7

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Fix bug and add linear gradient paint. - fix the bug that forget to clear n_dirty_geos in rdman_redraw_all().
author Thinker K.F. Li <thinker@branda.to>
date Sat, 02 Aug 2008 23:10:42 +0800
parents 8fcf2d878ecd
children e598bc809c0f
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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8 /*! \brief Manage redrawing of shapes (graphic elements).
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9 *
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10 * Every coord_t and geo_t object is assigned with a unique
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11 * incremental order. The order is a unsigned integer.
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12 * Every time a new coord_t or geo_t object is added, it is
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13 * assigned with a order number that 1 bigger than last one
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14 * until reaching maximum of unsigned integer.
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15 * When a maximum is meet, all coord_t or geo_t objects
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16 * are reasigned with a new order number from 1. It means
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17 * order numbers that have been assigned and then removed
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18 * later are recycled.
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19 *
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20 * Dirty flag is clear when the transformation matrix of a coord
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21 * object been recomputed or when a geo_t objects been redrawed.
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22 */
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23 typedef struct _redraw_man {
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24 #ifdef GEO_ORDER
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25 unsigned int next_geo_order;
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26 #endif
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27 int n_geos;
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28 STAILQ(geo_t) all_geos;
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29
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30 unsigned int next_coord_order;
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31 int n_coords;
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32 coord_t *root_coord;
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33
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34 elmpool_t *geo_pool;
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35 elmpool_t *coord_pool;
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36 elmpool_t *shnode_pool;
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37
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38 int max_dirty_coords;
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39 int n_dirty_coords;
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40 coord_t **dirty_coords;
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41
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42 int max_dirty_geos;
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43 int n_dirty_geos;
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44 geo_t **dirty_geos;
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45
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46 int max_dirty_areas;
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47 int n_dirty_areas;
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48 area_t **dirty_areas;
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49
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50 cairo_t *cr;
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51 } redraw_man_t;
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52
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53 extern int redraw_man_init(redraw_man_t *rdman, cairo_t *cr);
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54 extern void redraw_man_destroy(redraw_man_t *rdman);
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55 extern int rdman_find_overlaid_shapes(redraw_man_t *rdman,
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56 geo_t *geo,
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57 geo_t ***overlays);
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58 extern int rdman_add_shape(redraw_man_t *rdman,
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59 shape_t *shape, coord_t *coord);
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60 extern int rdman_remove_shape(redraw_man_t *rdman, shape_t *shape);
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61 extern coord_t *rdman_coord_new(redraw_man_t *rdman, coord_t *parent);
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62 extern int rdman_coord_free(redraw_man_t *rdman, coord_t *coord);
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63 extern int rdman_coord_changed(redraw_man_t *rdman, coord_t *coord);
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64 extern int rdman_shape_changed(redraw_man_t *rdman, shape_t *shape);
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65 extern int rdman_redraw_changed(redraw_man_t *rdman);
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66 extern int rdman_redraw_all(redraw_man_t *rdman);
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67 extern shnode_t *shnode_new(redraw_man_t *rdman, shape_t *shape);
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68 #define shnode_free(rdman, node) elmpool_elm_free((rdman)->shnode_pool, node)
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69 #define shnode_list_free(rdman, q) \
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70 do { \
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71 shnode_t *__node, *__last; \
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72 __last = STAILQ_HEAD(q); \
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73 if(__last == NULL) break; \
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74 for(__node = STAILQ_NEXT(shnode_t, next, __last); \
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75 __node != NULL; \
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76 __node = STAILQ_NEXT(shnode_t, next, __node)) { \
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77 shnode_free(rdman, __last); \
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78 __last = __node; \
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79 } \
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80 shnode_free(rdman, __last); \
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81 } while(0)
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82 #define _rdman_paint_child(rdman, paint, shape) \
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83 do { \
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84 shnode_t *__node; \
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85 if((shape)->fill != (paint) && \
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86 (shape)->stroke != (paint)) { \
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87 __node = shnode_new(rdman, shape); \
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88 STAILQ_INS_TAIL((paint)->members, \
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89 shnode_t, next, __node); \
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90 } \
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91 } while(0)
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92 #define rdman_paint_fill(rdman, paint, shape) \
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93 do { \
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94 _rdman_paint_child(rdman, paint, shape); \
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95 shape->fill = paint; \
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96 } while(0)
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97 #define rdman_paint_stroke(rdman, paint, shape) \
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98 do { \
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99 _rdman_paint_child(rdman, paint, shape); \
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100 shape->stroke = paint; \
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101 } while(0)
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102 extern int rdman_paint_changed(redraw_man_t *rdman, paint_t *paint);
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103
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104
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105 #endif /* __REDRAW_MAN_H_ */