Go to most recent revision | Details | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 3584 | sourcerer | 1 | /* |
| 2 | * Copyright 2010 Vincent Sanders |
||
| 3 | * |
||
| 4 | * This file is part of libnsfb, http://www.netsurf-browser.org/ |
||
| 5 | * Licenced under the MIT License, |
||
| 6 | * http://www.opensource.org/licenses/mit-license.php |
||
| 7 | */ |
||
| 8 | |||
| 9 | /** \file |
||
| 10 | * cursor (implementation). |
||
| 11 | */ |
||
| 12 | |||
| 13 | #include |
||
| 14 | #include |
||
| 15 | |||
| 16 | #include "libnsfb.h" |
||
| 17 | #include "libnsfb_plot.h" |
||
| 18 | #include "libnsfb_cursor.h" |
||
| 19 | |||
| 20 | #include "nsfb.h" |
||
| 21 | #include "cursor.h" |
||
| 22 | #include "plot.h" |
||
| 23 | #include "surface.h" |
||
| 24 | |||
| 25 | bool nsfb_cursor_init(nsfb_t *nsfb) |
||
| 26 | { |
||
| 27 | if (nsfb->cursor != NULL) |
||
| 28 | return false; |
||
| 29 | |||
| 30 | nsfb->cursor = calloc(1, sizeof(struct nsfb_cursor_s)); |
||
| 31 | if (nsfb->cursor == NULL) |
||
| 32 | return false; |
||
| 33 | |||
| 34 | nsfb->cursor->loc.x0 = nsfb->width / 2; |
||
| 35 | nsfb->cursor->loc.y0 = nsfb->height / 2; |
||
| 36 | return true; |
||
| 37 | } |
||
| 38 | |||
| 39 | bool nsfb_cursor_set(nsfb_t *nsfb, const nsfb_colour_t *pixel, |
||
| 40 | int bmp_width, int bmp_height, int bmp_stride, |
||
| 41 | int hotspot_x, int hotspot_y) |
||
| 42 | { |
||
| 43 | if (nsfb->cursor == NULL) |
||
| 44 | return false; |
||
| 45 | |||
| 46 | nsfb->cursor->pixel = pixel; |
||
| 47 | nsfb->cursor->bmp_width = bmp_width; |
||
| 48 | nsfb->cursor->bmp_height = bmp_height; |
||
| 49 | nsfb->cursor->bmp_stride = bmp_stride; |
||
| 50 | nsfb->cursor->loc.x1 = nsfb->cursor->loc.x0 + nsfb->cursor->bmp_width; |
||
| 51 | nsfb->cursor->loc.y1 = nsfb->cursor->loc.y0 + nsfb->cursor->bmp_height; |
||
| 52 | |||
| 53 | nsfb->cursor->hotspot_x = hotspot_x; |
||
| 54 | nsfb->cursor->hotspot_y = hotspot_y; |
||
| 55 | |||
| 56 | return nsfb->surface_rtns->cursor(nsfb, nsfb->cursor); |
||
| 57 | } |
||
| 58 | |||
| 59 | bool nsfb_cursor_loc_set(nsfb_t *nsfb, const nsfb_bbox_t *loc) |
||
| 60 | { |
||
| 61 | if (nsfb->cursor == NULL) |
||
| 62 | return false; |
||
| 63 | |||
| 64 | nsfb->cursor->loc = *loc; |
||
| 65 | nsfb->cursor->loc.x1 = nsfb->cursor->loc.x0 + nsfb->cursor->bmp_width; |
||
| 66 | nsfb->cursor->loc.y1 = nsfb->cursor->loc.y0 + nsfb->cursor->bmp_height; |
||
| 67 | |||
| 68 | return nsfb->surface_rtns->cursor(nsfb, nsfb->cursor); |
||
| 69 | } |
||
| 70 | |||
| 71 | bool nsfb_cursor_loc_get(nsfb_t *nsfb, nsfb_bbox_t *loc) |
||
| 72 | { |
||
| 73 | if (nsfb->cursor == NULL) |
||
| 74 | return false; |
||
| 75 | |||
| 76 | *loc = nsfb->cursor->loc; |
||
| 77 | return true; |
||
| 78 | } |
||
| 79 | |||
| 80 | /* documented in cursor.h */ |
||
| 81 | bool nsfb_cursor_plot(nsfb_t *nsfb, struct nsfb_cursor_s *cursor) |
||
| 82 | { |
||
| 83 | int sav_size; |
||
| 84 | nsfb_bbox_t sclip; /* saved clipping area */ |
||
| 85 | |||
| 86 | nsfb->plotter_fns->get_clip(nsfb, &sclip); |
||
| 87 | nsfb->plotter_fns->set_clip(nsfb, NULL); |
||
| 88 | |||
| 89 | /* offset cursor rect for hotspot */ |
||
| 90 | cursor->loc.x0 -= cursor->hotspot_x; |
||
| 91 | cursor->loc.y0 -= cursor->hotspot_y; |
||
| 92 | cursor->loc.x1 -= cursor->hotspot_x; |
||
| 93 | cursor->loc.y1 -= cursor->hotspot_y; |
||
| 94 | |||
| 95 | cursor->savloc = cursor->loc; |
||
| 96 | |||
| 97 | cursor->sav_width = cursor->savloc.x1 - cursor->savloc.x0; |
||
| 98 | cursor->sav_height = cursor->savloc.y1 - cursor->savloc.y0; |
||
| 99 | |||
| 100 | sav_size = cursor->sav_width * cursor->sav_height * sizeof(nsfb_colour_t); |
||
| 101 | if (cursor->sav_size < sav_size) { |
||
| 102 | cursor->sav = realloc(cursor->sav, sav_size); |
||
| 103 | cursor->sav_size = sav_size; |
||
| 104 | } |
||
| 105 | |||
| 106 | nsfb->plotter_fns->readrect(nsfb, &cursor->savloc, cursor->sav); |
||
| 107 | cursor->sav_width = cursor->savloc.x1 - cursor->savloc.x0; |
||
| 108 | cursor->sav_height = cursor->savloc.y1 - cursor->savloc.y0; |
||
| 109 | |||
| 110 | nsfb->plotter_fns->set_clip(nsfb, NULL); |
||
| 111 | nsfb->plotter_fns->bitmap(nsfb, |
||
| 112 | &cursor->loc, |
||
| 113 | cursor->pixel, |
||
| 114 | cursor->bmp_width, |
||
| 115 | cursor->bmp_height, |
||
| 116 | cursor->bmp_stride, |
||
| 117 | true); |
||
| 118 | |||
| 119 | /* undo hotspot offset */ |
||
| 120 | cursor->loc.x0 += cursor->hotspot_x; |
||
| 121 | cursor->loc.y0 += cursor->hotspot_y; |
||
| 122 | cursor->loc.x1 += cursor->hotspot_x; |
||
| 123 | cursor->loc.y1 += cursor->hotspot_y; |
||
| 124 | |||
| 125 | nsfb->plotter_fns->set_clip(nsfb, &sclip); |
||
| 126 | |||
| 127 | cursor->plotted = true; |
||
| 128 | |||
| 129 | return true; |
||
| 130 | } |
||
| 131 | |||
| 132 | bool nsfb_cursor_clear(nsfb_t *nsfb, struct nsfb_cursor_s *cursor) |
||
| 133 | { |
||
| 134 | nsfb_bbox_t sclip; /* saved clipping area */ |
||
| 135 | |||
| 136 | nsfb->plotter_fns->get_clip(nsfb, &sclip); |
||
| 137 | nsfb->plotter_fns->set_clip(nsfb, NULL); |
||
| 138 | |||
| 139 | nsfb->plotter_fns->bitmap(nsfb, |
||
| 140 | &cursor->savloc, |
||
| 141 | cursor->sav, |
||
| 142 | cursor->sav_width, |
||
| 143 | cursor->sav_height, |
||
| 144 | cursor->sav_width, |
||
| 145 | false); |
||
| 146 | |||
| 147 | nsfb->plotter_fns->set_clip(nsfb, &sclip); |
||
| 148 | |||
| 149 | cursor->plotted = false; |
||
| 150 | return true; |
||
| 151 | |||
| 152 | } |