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comparison src/redraw_man.c @ 37:943acee7f346

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update exposed area
author Thinker K.F. Li <thinker@branda.to>
date Wed, 06 Aug 2008 10:14:45 +0800
parents 581a03196093
children 8d219ebd729e
comparison
equal deleted inserted replaced
36:51a20f240ce3 37:943acee7f346
76 static int add_dirty_area(redraw_man_t *rdman, area_t *area) { 76 static int add_dirty_area(redraw_man_t *rdman, area_t *area) {
77 int max_dirty_areas; 77 int max_dirty_areas;
78 int r; 78 int r;
79 79
80 if(rdman->n_dirty_areas >= rdman->max_dirty_areas) { 80 if(rdman->n_dirty_areas >= rdman->max_dirty_areas) {
81 /* every geo object and coord object can contribute 2 areas. */ 81 /* every geo object and coord object can contribute 2 areas.
82 max_dirty_areas = (rdman->n_geos + rdman->n_coords) * 2; 82 * rdman_draw_area() may also contribute 1 area.
83 */
84 max_dirty_areas = (rdman->n_geos + rdman->n_coords) * 2 + 1;
83 r = extend_memblk((void **)&rdman->dirty_areas, 85 r = extend_memblk((void **)&rdman->dirty_areas,
84 sizeof(area_t *) * rdman->n_dirty_areas, 86 sizeof(area_t *) * rdman->n_dirty_areas,
85 sizeof(area_t *) * max_dirty_areas); 87 sizeof(area_t *) * max_dirty_areas);
86 if(r != OK) 88 if(r != OK)
87 return ERR; 89 return ERR;
614 } 616 }
615 cairo_clip(cr); 617 cairo_clip(cr);
616 } 618 }
617 619
618 static void reset_clip(redraw_man_t *rdman) { 620 static void reset_clip(redraw_man_t *rdman) {
619 cairo_reset_clip(rdman->cr);
620 cairo_reset_clip(rdman->backend); 621 cairo_reset_clip(rdman->backend);
621 } 622 }
622 623
623 static void copy_cr_2_backend(redraw_man_t *rdman, int n_dirty_areas, 624 static void copy_cr_2_backend(redraw_man_t *rdman, int n_dirty_areas,
624 area_t **dirty_areas) { 625 area_t **dirty_areas) {
721 722
722 r = clean_rdman_dirties(rdman); 723 r = clean_rdman_dirties(rdman);
723 if(r != OK) 724 if(r != OK)
724 return ERR; 725 return ERR;
725 726
727 clean_canvas(rdman->cr);
728
726 for(geo = STAILQ_HEAD(rdman->all_geos); 729 for(geo = STAILQ_HEAD(rdman->all_geos);
727 geo != NULL; 730 geo != NULL;
728 geo = STAILQ_NEXT(geo_t, next, geo)) { 731 geo = STAILQ_NEXT(geo_t, next, geo)) {
729 draw_shape(rdman, geo->shape); 732 draw_shape(rdman, geo->shape);
730 } 733 }
731 copy_cr_2_backend(rdman, 0, NULL); 734 copy_cr_2_backend(rdman, 0, NULL);
732 rdman->n_dirty_areas = 0; 735 rdman->n_dirty_areas = 0;
733 736
734 return OK; 737 return OK;
738 }
739
740 int rdman_redraw_area(redraw_man_t *rdman, co_aix x, co_aix y,
741 co_aix w, co_aix h) {
742 area_t area;
743 int r;
744
745 area.x = x;
746 area.y = y;
747 area.w = w;
748 area.h = h;
749 add_dirty_area(rdman, &area);
750
751 r = rdman_redraw_changed(rdman);
752
753 return r;
735 } 754 }
736 755
737 int rdman_force_clean(redraw_man_t *rdman) { 756 int rdman_force_clean(redraw_man_t *rdman) {
738 int r; 757 int r;
739 758