2 * Navit, a modular navigation system.
3 * Copyright (C) 2005-2008 Navit Team
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * version 2 as published by the Free Software Foundation.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the
16 * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
20 //##############################################################################################################
25 //# Authors: Martin Schaller (04/2008)
27 //##############################################################################################################
36 #include "draw_info.h"
39 #include "projection.h"
43 #include "transform.h"
55 //##############################################################################################################
58 //# Authors: Martin Schaller (04/2008)
59 //##############################################################################################################
62 struct graphics_priv *priv;
63 struct graphics_methods meth;
66 struct graphics_font **font;
67 struct graphics_gc *gc[3];
69 struct callback_list *cbl;
74 struct display_context
78 struct graphics_gc *gc;
79 struct graphics_image *img;
82 struct transformation *trans;
90 struct layout *layout;
91 struct display_context dc;
94 struct mapset_handle *msh;
97 struct map_selection *sel;
99 struct callback *idle_cb;
100 struct event_idle *idle_ev;
104 static void draw_circle(struct point *pnt, int diameter, int scale, int start, int len, struct point *res, int *pos, int dir);
105 static void graphics_process_selection(struct graphics *gra, struct displaylist *dl);
108 graphics_set_attr(struct graphics *gra, struct attr *attr)
112 if (gra->meth.set_attr)
113 ret=gra->meth.set_attr(gra->priv, attr);
118 graphics_set_rect(struct graphics *gra, struct point_rect *pr)
124 * Creates a new graphics object
128 * @author Martin Schaller (04/2008)
130 struct graphics * graphics_new(struct attr *parent, struct attr **attrs)
132 struct graphics *this_;
133 struct attr *type_attr;
134 struct graphics_priv * (*graphicstype_new)(struct navit *nav, struct graphics_methods *meth, struct attr **attrs, struct callback_list *cbl);
136 if (! (type_attr=attr_search(attrs, NULL, attr_type))) {
140 graphicstype_new=plugin_get_graphics_type(type_attr->u.str);
141 if (! graphicstype_new)
143 this_=g_new0(struct graphics, 1);
144 this_->cbl=callback_list_new();
145 this_->priv=(*graphicstype_new)(parent->u.navit, &this_->meth, attrs, this_->cbl);
146 this_->attrs=attr_list_dup(attrs);
154 * @author Martin Schaller (04/2008)
156 int graphics_get_attr(struct graphics *this_, enum attr_type type, struct attr *attr, struct attr_iter *iter)
158 return attr_generic_get_attr(this_->attrs, NULL, type, attr, iter);
165 * @author Martin Schaller (04/2008)
167 struct graphics * graphics_overlay_new(struct graphics *parent, struct point *p, int w, int h, int alpha, int wraparound)
169 struct graphics *this_;
170 if (!parent->meth.overlay_new)
172 this_=g_new0(struct graphics, 1);
173 this_->priv=parent->meth.overlay_new(parent->priv, &this_->meth, p, w, h, alpha, wraparound);
182 * @brief Alters the size, position, alpha and wraparound for an overlay
184 * @param this_ The overlay's graphics struct
185 * @param p The new position of the overlay
186 * @param w The new width of the overlay
187 * @param h The new height of the overlay
188 * @param alpha The new alpha of the overlay
189 * @param wraparound The new wraparound of the overlay
192 graphics_overlay_resize(struct graphics *this_, struct point *p, int w, int h, int alpha, int wraparound)
194 if (! this_->meth.overlay_resize) {
198 this_->meth.overlay_resize(this_->priv, p, w, h, alpha, wraparound);
206 * @author Martin Schaller (04/2008)
208 void graphics_init(struct graphics *this_)
212 this_->gc[0]=graphics_gc_new(this_);
213 graphics_gc_set_background(this_->gc[0], &(struct color) { 0xffff, 0xefef, 0xb7b7, 0xffff});
214 graphics_gc_set_foreground(this_->gc[0], &(struct color) { 0xffff, 0xefef, 0xb7b7, 0xffff });
215 this_->gc[1]=graphics_gc_new(this_);
216 graphics_gc_set_background(this_->gc[1], &(struct color) { 0x0000, 0x0000, 0x0000, 0xffff });
217 graphics_gc_set_foreground(this_->gc[1], &(struct color) { 0xffff, 0xffff, 0xffff, 0xffff });
218 this_->gc[2]=graphics_gc_new(this_);
219 graphics_gc_set_background(this_->gc[2], &(struct color) { 0xffff, 0xffff, 0xffff, 0xffff });
220 graphics_gc_set_foreground(this_->gc[2], &(struct color) { 0x0000, 0x0000, 0x0000, 0xffff });
221 graphics_background_gc(this_, this_->gc[0]);
228 * @author Martin Schaller (04/2008)
230 void * graphics_get_data(struct graphics *this_, char *type)
232 return (this_->meth.get_data(this_->priv, type));
235 void graphics_add_callback(struct graphics *this_, struct callback *cb)
237 callback_list_add(this_->cbl, cb);
240 void graphics_remove_callback(struct graphics *this_, struct callback *cb)
242 callback_list_remove(this_->cbl, cb);
249 * @author Martin Schaller (04/2008)
251 struct graphics_font * graphics_font_new(struct graphics *gra, int size, int flags)
253 struct graphics_font *this_;
255 this_=g_new0(struct graphics_font,1);
256 this_->priv=gra->meth.font_new(gra->priv, &this_->meth, gra->default_font, size, flags);
261 * Free all loaded fonts.
262 * Used when switching layouts.
263 * @param gra The graphics instance
265 * @author Sarah Nordstrom (05/2008)
267 void graphics_font_destroy_all(struct graphics *gra)
270 for(i = 0 ; i < gra->font_len; i++) {
271 if(!gra->font[i]) continue;
272 gra->font[i]->meth.font_destroy(gra->font[i]->priv);
281 * @author Martin Schaller (04/2008)
283 struct graphics_gc * graphics_gc_new(struct graphics *gra)
285 struct graphics_gc *this_;
287 this_=g_new0(struct graphics_gc,1);
288 this_->priv=gra->meth.gc_new(gra->priv, &this_->meth);
296 * @author Martin Schaller (04/2008)
298 void graphics_gc_destroy(struct graphics_gc *gc)
300 gc->meth.gc_destroy(gc->priv);
308 * @author Martin Schaller (04/2008)
310 void graphics_gc_set_foreground(struct graphics_gc *gc, struct color *c)
312 gc->meth.gc_set_foreground(gc->priv, c);
319 * @author Martin Schaller (04/2008)
321 void graphics_gc_set_background(struct graphics_gc *gc, struct color *c)
323 gc->meth.gc_set_background(gc->priv, c);
331 * @author Martin Schaller (04/2008)
333 void graphics_gc_set_stipple(struct graphics_gc *gc, struct graphics_image *img)
335 gc->meth.gc_set_stipple(gc->priv, img ? img->priv : NULL);
343 * @author Martin Schaller (04/2008)
345 void graphics_gc_set_linewidth(struct graphics_gc *gc, int width)
347 gc->meth.gc_set_linewidth(gc->priv, width);
354 * @author Martin Schaller (04/2008)
356 void graphics_gc_set_dashes(struct graphics_gc *gc, int width, int offset, unsigned char dash_list[], int n)
358 if (gc->meth.gc_set_dashes)
359 gc->meth.gc_set_dashes(gc->priv, width, offset, dash_list, n);
363 * Create a new image from file path scaled to w and h pixels
364 * @param gra the graphics instance
365 * @param path path of the image to load
366 * @param w width to rescale to
367 * @param h height to rescale to
369 * @author Martin Schaller (04/2008)
371 struct graphics_image * graphics_image_new_scaled(struct graphics *gra, char *path, int w, int h)
373 struct graphics_image *this_;
375 this_=g_new0(struct graphics_image,1);
378 this_->priv=gra->meth.image_new(gra->priv, &this_->meth, path, &this_->width, &this_->height, &this_->hot, 0);
387 * Create a new image from file path scaled to w and h pixels and possibly rotated
388 * @param gra the graphics instance
389 * @param path path of the image to load
390 * @param w width to rescale to
391 * @param h height to rescale to
392 * @param rotate angle to rotate the image. Warning, graphics might only support 90 degree steps here
394 * @author Martin Schaller (04/2008)
396 struct graphics_image * graphics_image_new_scaled_rotated(struct graphics *gra, char *path, int w, int h, int rotate)
398 struct graphics_image *this_;
400 this_=g_new0(struct graphics_image,1);
403 this_->priv=gra->meth.image_new(gra->priv, &this_->meth, path, &this_->width, &this_->height, &this_->hot, rotate);
412 * Create a new image from file path
413 * @param gra the graphics instance
414 * @param path path of the image to load
416 * @author Martin Schaller (04/2008)
418 struct graphics_image * graphics_image_new(struct graphics *gra, char *path)
420 return graphics_image_new_scaled(gra, path, -1, -1);
427 * @author Martin Schaller (04/2008)
429 void graphics_image_free(struct graphics *gra, struct graphics_image *img)
431 if (gra->meth.image_free)
432 gra->meth.image_free(gra->priv, img->priv);
440 * @author Martin Schaller (04/2008)
442 void graphics_draw_restore(struct graphics *this_, struct point *p, int w, int h)
444 this_->meth.draw_restore(this_->priv, p, w, h);
451 * @author Martin Schaller (04/2008)
453 void graphics_draw_mode(struct graphics *this_, enum draw_mode_num mode)
455 this_->meth.draw_mode(this_->priv, mode);
462 * @author Martin Schaller (04/2008)
464 void graphics_draw_lines(struct graphics *this_, struct graphics_gc *gc, struct point *p, int count)
466 this_->meth.draw_lines(this_->priv, gc->priv, p, count);
473 * @author Martin Schaller (04/2008)
475 void graphics_draw_circle(struct graphics *this_, struct graphics_gc *gc, struct point *p, int r)
477 this_->meth.draw_circle(this_->priv, gc->priv, p, r);
484 * @author Martin Schaller (04/2008)
486 void graphics_draw_rectangle(struct graphics *this_, struct graphics_gc *gc, struct point *p, int w, int h)
488 this_->meth.draw_rectangle(this_->priv, gc->priv, p, w, h);
491 void graphics_draw_rectangle_rounded(struct graphics *this_, struct graphics_gc *gc, struct point *plu, int w, int h, int r, int fill)
493 struct point p[r*4+32];
494 struct point pi0={plu->x+r,plu->y+r};
495 struct point pi1={plu->x+w-r,plu->y+r};
496 struct point pi2={plu->x+w-r,plu->y+h-r};
497 struct point pi3={plu->x+r,plu->y+h-r};
500 draw_circle(&pi2, r*2, 0, -1, 258, p, &i, 1);
501 draw_circle(&pi1, r*2, 0, 255, 258, p, &i, 1);
502 draw_circle(&pi0, r*2, 0, 511, 258, p, &i, 1);
503 draw_circle(&pi3, r*2, 0, 767, 258, p, &i, 1);
507 this_->meth.draw_polygon(this_->priv, gc->priv, p, i);
509 this_->meth.draw_lines(this_->priv, gc->priv, p, i);
517 * @author Martin Schaller (04/2008)
519 void graphics_draw_text(struct graphics *this_, struct graphics_gc *gc1, struct graphics_gc *gc2, struct graphics_font *font, char *text, struct point *p, int dx, int dy)
521 this_->meth.draw_text(this_->priv, gc1->priv, gc2 ? gc2->priv : NULL, font->priv, text, p, dx, dy);
528 * @author Martin Schaller (04/2008)
530 void graphics_get_text_bbox(struct graphics *this_, struct graphics_font *font, char *text, int dx, int dy, struct point *ret, int estimate)
532 this_->meth.get_text_bbox(this_->priv, font->priv, text, dx, dy, ret, estimate);
539 * @author Martin Schaller (04/2008)
541 void graphics_overlay_disable(struct graphics *this_, int disable)
543 if (this_->meth.overlay_disable)
544 this_->meth.overlay_disable(this_->priv, disable);
551 * @author Martin Schaller (04/2008)
553 void graphics_draw_image(struct graphics *this_, struct graphics_gc *gc, struct point *p, struct graphics_image *img)
555 this_->meth.draw_image(this_->priv, gc->priv, p, img->priv);
559 //##############################################################################################################
562 //# Authors: Martin Schaller (04/2008)
563 //##############################################################################################################
565 graphics_draw_drag(struct graphics *this_, struct point *p)
567 if (!this_->meth.draw_drag)
569 this_->meth.draw_drag(this_->priv, p);
574 graphics_background_gc(struct graphics *this_, struct graphics_gc *gc)
576 this_->meth.background_gc(this_->priv, gc ? gc->priv : NULL);
585 //##############################################################################################################
588 //# Authors: Martin Schaller (04/2008)
589 //##############################################################################################################
590 static void popup_view_html(struct popup_item *item, char *file)
593 sprintf(command,"firefox %s", file);
597 struct transformatin *tg;
600 //##############################################################################################################
603 //# Authors: Martin Schaller (04/2008)
604 //##############################################################################################################
605 static void graphics_popup(struct display_list *list, struct popup_item **popup)
611 struct popup_item *curr_item,*last=NULL;
613 mr=map_rect_new(item->map, NULL, NULL, 0);
614 printf("id hi=0x%x lo=0x%x\n", item->id_hi, item->id_lo);
615 item=map_rect_get_item_byid(mr, item->id_hi, item->id_lo);
617 if (item_attr_get(item, attr_name, &attr)) {
618 curr_item=popup_item_new_text(popup,attr.u.str,1);
619 if (item_attr_get(item, attr_info_html, &attr)) {
620 popup_item_new_func(&last,"HTML Info",1, popup_view_html, g_strdup(attr.u.str));
622 if (item_attr_get(item, attr_price_html, &attr)) {
623 popup_item_new_func(&last,"HTML Preis",2, popup_view_html, g_strdup(attr.u.str));
625 curr_item->submenu=last;
628 map_rect_destroy(mr);
636 * @author Martin Schaller (04/2008)
650 * @author Martin Schaller (04/2008)
652 static int xdisplay_free_list(gpointer key, gpointer value, gpointer user_data)
654 GHashTable *hash=value;
656 g_hash_table_destroy(hash);
664 * @author Martin Schaller (04/2008)
666 static void xdisplay_free(GHashTable *display_list)
668 g_hash_table_foreach_remove(display_list, xdisplay_free_list, NULL);
672 displayitem_hash(gconstpointer key)
674 const struct displayitem *di=key;
675 return (di->item.id_hi^di->item.id_lo^(GPOINTER_TO_INT(di->item.map)));
679 displayitem_equal(gconstpointer a, gconstpointer b)
681 const struct displayitem *dia=a;
682 const struct displayitem *dib=b;
683 if (item_is_equal(dia->item, dib->item))
693 * @author Martin Schaller (04/2008)
695 static void display_add(struct displaylist *displaylist, struct item *item, int count, struct coord *c, char *label)
697 struct displayitem *di;
702 len=sizeof(*di)+count*sizeof(*c);
704 len+=strlen(label)+1;
708 di=(struct displayitem *)p;
710 p+=sizeof(*di)+count*sizeof(*c);
714 strcpy(di->label, label);
718 memcpy(di->c, c, count*sizeof(*c));
720 h=g_hash_table_lookup(displaylist->dl, GINT_TO_POINTER(item->type));
722 h=g_hash_table_new_full(displayitem_hash, displayitem_equal, g_free, NULL);
723 g_hash_table_insert(displaylist->dl, GINT_TO_POINTER(item->type), h);
725 g_hash_table_replace(h, di, di);
733 * @author Martin Schaller (04/2008)
735 static void label_line(struct graphics *gra, struct graphics_gc *fg, struct graphics_gc *bg, struct graphics_font *font, struct point *p, int count, char *label)
737 int i,x,y,tl,tlm,th,thm,tlsq,l;
743 if (gra->meth.get_text_bbox) {
744 gra->meth.get_text_bbox(gra->priv, font->priv, label, 0x10000, 0x0, pb, 1);
745 tl=(pb[2].x-pb[0].x);
746 th=(pb[0].y-pb[1].y);
754 for (i = 0 ; i < count-1 ; i++) {
777 dbg(0,"display_text: '%s', %d, %d, %d, %d %d\n", label, x, y, dx*0x10000/l, dy*0x10000/l, l);
779 if (x < gra->r.rl.x && x + tl > gra->r.lu.x && y + tl > gra->r.lu.y && y - tl < gra->r.rl.y)
780 gra->meth.draw_text(gra->priv, fg->priv, bg->priv, font->priv, label, &p_t, dx*0x10000/l, dy*0x10000/l);
785 static void display_draw_arrow(struct point *p, int dx, int dy, int l, struct graphics_gc *gc, struct graphics *gra)
788 pnt[0]=pnt[1]=pnt[2]=*p;
789 pnt[0].x+=-dx*l/65536+dy*l/65536;
790 pnt[0].y+=-dy*l/65536-dx*l/65536;
791 pnt[2].x+=-dx*l/65536-dy*l/65536;
792 pnt[2].y+=-dy*l/65536+dx*l/65536;
793 gra->meth.draw_lines(gra->priv, gc->priv, pnt, 3);
796 static void display_draw_arrows(struct graphics *gra, struct graphics_gc *gc, struct point *pnt, int count)
800 for (i = 0 ; i < count-1 ; i++) {
801 dx=pnt[i+1].x-pnt[i].x;
802 dy=pnt[i+1].y-pnt[i].y;
810 display_draw_arrow(&p, dx, dy, 10, gc, gra);
814 display_draw_arrow(&p, dx, dy, 10, gc, gra);
820 intersection(struct point * a1, int adx, int ady, struct point * b1, int bdx, int bdy,
824 n = bdy * adx - bdx * ady;
825 a = bdx * (a1->y - b1->y) - bdy * (a1->x - b1->x);
826 b = adx * (a1->y - b1->y) - ady * (a1->x - b1->x);
840 res->x = a1->x + a * adx / n;
841 res->y = a1->y + a * ady / n;
915 draw_circle(struct point *pnt, int diameter, int scale, int start, int len, struct point *res, int *pos, int dir)
920 dbg(0,"diameter=%d start=%d len=%d pos=%d dir=%d\n", diameter, start, len, *pos, dir);
928 else if (diameter > 64)
930 else if (diameter > 24)
932 else if (diameter > 8)
943 while (i < count && c[i].fowler <= start)
945 while (i < count && c[i].fowler < end) {
946 res[*pos].x=pnt->x+((c[i].x*diameter+128)>>8);
947 res[*pos].y=pnt->y+((c[i].y*diameter+128)>>8);
955 while (start > 1024) {
961 while (i >= 0 && c[i].fowler >= start)
963 while (i >= 0 && c[i].fowler > end) {
964 res[*pos].x=pnt->x+((c[i].x*diameter+128)>>8);
965 res[*pos].y=pnt->y+((c[i].y*diameter+128)>>8);
977 fowler(int dy, int dx)
979 int adx, ady; /* Absolute Values of Dx and Dy */
980 int code; /* Angular Region Classification Code */
982 adx = (dx < 0) ? -dx : dx; /* Compute the absolute values. */
983 ady = (dy < 0) ? -dy : dy;
985 code = (adx < ady) ? 1 : 0;
993 return (dx == 0) ? 0 : 128*ady / adx; /* [ 0, 45] */
995 return (256 - (128*adx / ady)); /* ( 45, 90] */
997 return (256 + (128*adx / ady)); /* ( 90,135) */
999 return (512 - (128*ady / adx)); /* [135,180] */
1001 return (512 + (128*ady / adx)); /* (180,225] */
1003 return (768 - (128*adx / ady)); /* (225,270) */
1005 return (768 + (128*adx / ady)); /* [270,315) */
1007 return (1024 - (128*ady / adx));/* [315,360) */
1012 int_sqrt(unsigned int n)
1014 unsigned int h, p= 0, q= 1, r= n;
1016 /* avoid q rollover */
1017 if(n >= (1<<(sizeof(n)*8-2))) {
1018 q = 1<<(sizeof(n)*8-2);
1043 calc_offsets(int wi, int l, int dx, int dy, struct offset *res)
1066 graphics_draw_polyline_as_polygon(struct graphics *gra, struct graphics_gc *gc, struct point *pnt, int count, int *width, int step)
1069 struct point res[maxpoints], pos, poso, neg, nego;
1070 int i, dx=0, dy=0, l=0, dxo=0, dyo=0;
1072 int fow=0, fowo=0, delta;
1073 int wi, ppos = maxpoints/2, npos = maxpoints/2;
1075 int max_circle_points=20;
1081 if (i < count - 1) {
1082 int dxs,dys,lscales;
1084 dx = (pnt[i + 1].x - pnt[i].x);
1085 dy = (pnt[i + 1].y - pnt[i].y);
1087 l = int_sqrt(dx * dx * lscale * lscale + dy * dy * lscale * lscale);
1091 lscales=lscale*lscale;
1092 if (dxs + dys > lscales)
1093 l = int_sqrt(dxs+dys)*lscale;
1095 l = int_sqrt((dxs+dys)*lscales);
1097 fow=fowler(-dy, dx);
1101 if (wi*lscale > 10000)
1103 dbg_assert(wi*lscale < 10000);
1104 calc_offsets(wi*lscale, l, dx, dy, &o);
1105 pos.x = pnt[i].x + o.ny;
1106 pos.y = pnt[i].y + o.px;
1107 neg.x = pnt[i].x + o.py;
1108 neg.y = pnt[i].y + o.nx;
1111 else if (i == count-1)
1113 else if (npos < max_circle_points || ppos >= maxpoints-max_circle_points)
1120 poso.x = pnt[i].x + oo.ny;
1121 poso.y = pnt[i].y + oo.px;
1122 nego.x = pnt[i].x + oo.py;
1123 nego.y = pnt[i].y + oo.nx;
1128 if (intersection(&pos, dx, dy, &poso, dxo, dyo, &res[ppos]))
1132 draw_circle(&pnt[i], wi, prec, fowo-512, -delta, res, &npos, -1);
1136 draw_circle(&pnt[i], wi, prec, fowo, 1024-delta, res, &ppos, 1);
1138 if (intersection(&neg, dx, dy, &nego, dxo, dyo, &res[npos - 1]))
1147 draw_circle(&pnt[i], wi, prec, fow-512, -512, res, &npos, -1);
1150 dbg_assert(npos > 0);
1151 dbg_assert(ppos < maxpoints);
1152 gra->meth.draw_polygon(gra->priv, gc->priv, res+npos, ppos-npos);
1159 draw_circle(&pnt[i], wi, prec, fow+512, 512, res, &ppos, 1);
1168 calc_offsets(wi*lscale, l, dx, dy, &oo);
1183 clipcode(struct wpoint *p, struct point_rect *r)
1199 clip_line(struct wpoint *p1, struct wpoint *p2, struct point_rect *r)
1201 int code1,code2,ret=1;
1203 code1=clipcode(p1, r);
1206 code2=clipcode(p2, r);
1212 while (code1 || code2) {
1216 p1->y+=(r->lu.x-p1->x)*dy/dx;
1217 p1->w+=(r->lu.x-p1->x)*dw/dx;
1219 } else if (code1 & 2) {
1220 p1->y+=(r->rl.x-p1->x)*dy/dx;
1221 p1->w+=(r->rl.x-p1->x)*dw/dx;
1223 } else if (code1 & 4) {
1224 p1->x+=(r->lu.y-p1->y)*dx/dy;
1225 p1->w+=(r->lu.y-p1->y)*dw/dy;
1227 } else if (code1 & 8) {
1228 p1->x+=(r->rl.y-p1->y)*dx/dy;
1229 p1->w+=(r->rl.y-p1->y)*dw/dy;
1232 code1=clipcode(p1, r);
1236 p2->y+=(r->lu.x-p2->x)*dy/dx;
1237 p2->w+=(r->lu.x-p2->x)*dw/dx;
1239 } else if (code2 & 2) {
1240 p2->y+=(r->rl.x-p2->x)*dy/dx;
1241 p2->w+=(r->rl.x-p2->x)*dw/dx;
1243 } else if (code2 & 4) {
1244 p2->x+=(r->lu.y-p2->y)*dx/dy;
1245 p2->w+=(r->lu.y-p2->y)*dw/dy;
1247 } else if (code2 & 8) {
1248 p2->x+=(r->rl.y-p2->y)*dx/dy;
1249 p2->w+=(r->rl.y-p2->y)*dw/dy;
1252 code2=clipcode(p2, r);
1258 graphics_draw_polyline_clipped(struct graphics *gra, struct graphics_gc *gc, struct point *pa, int count, int *width, int step, int poly)
1260 struct point p[count+1];
1261 int w[count*step+1];
1262 struct wpoint p1,p2;
1265 struct point_rect r=gra->r;
1269 for (i = 1 ; i < count ; i++) {
1270 if (width[i*step] > wmax)
1280 for (i = 0 ; i < count ; i++) {
1284 p1.w=width[(i-1)*step];
1288 /* 0 = invisible, 1 = completely visible, 3 = start point clipped, 5 = end point clipped, 7 both points clipped */
1289 code=clip_line(&p1, &p2, &r);
1290 if (((code == 1 || code == 5) && i == 1) || (code & 2)) {
1302 if (i == count-1 || (code & 4)) {
1305 graphics_draw_polyline_as_polygon(gra, gc, p, out, w, step);
1307 gra->meth.draw_lines(gra->priv, gc->priv, p, out);
1316 is_inside(struct point *p, struct point_rect *r, int edge)
1320 return p->x >= r->lu.x;
1322 return p->x <= r->rl.x;
1324 return p->y >= r->lu.y;
1326 return p->y <= r->rl.y;
1333 poly_intersection(struct point *p1, struct point *p2, struct point_rect *r, int edge, struct point *ret)
1339 ret->y=p1->y+(r->lu.x-p1->x)*dy/dx;
1343 ret->y=p1->y+(r->rl.x-p1->x)*dy/dx;
1347 ret->x=p1->x+(r->lu.y-p1->y)*dx/dy;
1351 ret->x=p1->x+(r->rl.y-p1->y)*dx/dy;
1358 graphics_draw_polygon_clipped(struct graphics *gra, struct graphics_gc *gc, struct point *pin, int count_in)
1360 struct point_rect r=gra->r;
1361 struct point *pout,*p,*s,pi;
1362 struct point p1[count_in*8+1];
1363 struct point p2[count_in*8+1];
1364 int count_out,edge=3;
1374 for (edge = 0 ; edge < 4 ; edge++) {
1378 for (i = 0 ; i < count_in ; i++) {
1379 if (is_inside(p, &r, edge)) {
1380 if (! is_inside(s, &r, edge)) {
1381 poly_intersection(s,p,&r,edge,&pi);
1382 pout[count_out++]=pi;
1384 pout[count_out++]=*p;
1386 if (is_inside(s, &r, edge)) {
1387 poly_intersection(p,s,&r,edge,&pi);
1388 pout[count_out++]=pi;
1403 gra->meth.draw_polygon(gra->priv, gc->priv, pin, count_in);
1408 display_context_free(struct display_context *dc)
1411 graphics_gc_destroy(dc->gc);
1413 graphics_image_free(dc->gra, dc->img);
1418 static struct graphics_font *
1419 get_font(struct graphics *gra, int size)
1423 if (size >= gra->font_len) {
1424 gra->font=g_renew(struct graphics_font *, gra->font, size+1);
1425 while (gra->font_len <= size)
1426 gra->font[gra->font_len++]=NULL;
1428 if (! gra->font[size])
1429 gra->font[size]=graphics_font_new(gra, size*20, 0);
1430 return gra->font[size];
1434 graphics_icon_path(char *icon)
1436 static char *navit_sharedir;
1437 dbg(1,"enter %s\n",icon);
1439 return g_strdup(icon);
1441 #ifdef HAVE_API_ANDROID
1442 return g_strdup_printf("res/drawable/%s", icon);
1444 if (! navit_sharedir)
1445 navit_sharedir = getenv("NAVIT_SHAREDIR");
1446 return g_strdup_printf("%s/xpm/%s", navit_sharedir, icon);
1453 displayitem_draw(struct displayitem *di, void *dummy, struct display_context *dc)
1457 struct point pa[16384];
1458 struct graphics *gra=dc->gra;
1459 struct graphics_gc *gc=dc->gc;
1460 struct element *e=dc->e;
1461 struct graphics_image *img=dc->img;
1467 gc=graphics_gc_new(gra);
1468 gc->meth.gc_set_foreground(gc->priv, &e->color);
1471 if (dc->e->type == element_polyline) {
1472 count=transform(dc->trans, dc->pro, di->c, pa, di->count, dc->mindist, e->u.polyline.width, width);
1475 count=transform(dc->trans, dc->pro, di->c, pa, di->count, dc->mindist, 0, NULL);
1477 case element_polygon:
1481 for (i = 0 ; i < count ; i++) {
1482 dbg(0,"pa[%d]=%d,%d\n", i, pa[i].x, pa[i].y);
1485 dbg(0,"element_polygon count=%d\n",count);
1488 graphics_draw_polygon_clipped(gra, gc, pa, count);
1491 case element_polyline:
1493 if (e->u.polyline.width > 1) {
1494 graphics_draw_polyline_as_polygon(gra, gc, pa, count, width, 0);
1499 if (e->u.polyline.width > 1)
1500 gc->meth.gc_set_linewidth(gc->priv, e->u.polyline.width);
1502 gc->meth.gc_set_linewidth(gc->priv, 1);
1507 if (e->u.polyline.width > 0 && e->u.polyline.dash_num > 0)
1508 graphics_gc_set_dashes(gc, e->u.polyline.width,
1509 e->u.polyline.offset,
1510 e->u.polyline.dash_table,
1511 e->u.polyline.dash_num);
1513 if (di->label && !strcmp(di->label, "Bahnhofstr.") && di->item.type != type_street_1_city) {
1514 dbg(0,"0x%x,0x%x %s\n", di->item.id_hi, di->item.id_lo, item_to_name(di->item.type));
1516 for (i = 0 ; i < count ; i++) {
1520 graphics_draw_polyline_clipped(gra, gc, pa, count, width, 1, e->u.polyline.width > 1);
1526 case element_circle:
1528 if (e->u.circle.width > 1)
1529 gc->meth.gc_set_linewidth(gc->priv, e->u.polyline.width);
1530 gra->meth.draw_circle(gra->priv, gc->priv, pa, e->u.circle.radius);
1531 if (di->label && e->text_size) {
1532 struct graphics_font *font=get_font(gra, e->text_size);
1536 gra->meth.draw_text(gra->priv, gra->gc[2]->priv, gra->gc[1]->priv, font->priv, di->label, &p, 0x10000, 0);
1538 dbg(0,"Failed to get font with size %d\n",e->text_size);
1543 if (count && di->label) {
1544 struct graphics_font *font=get_font(gra, e->text_size);
1546 label_line(gra, gra->gc[2], gra->gc[1], font, pa, count, di->label);
1548 dbg(0,"Failed to get font with size %d\n",e->text_size);
1554 path=graphics_icon_path(e->u.icon.src);
1555 img=graphics_image_new_scaled_rotated(gra, path, e->u.icon.width, e->u.icon.height, e->u.icon.rotation);
1560 dbg(0,"failed to load icon '%s'\n", e->u.icon.src);
1563 p.x=pa[0].x - img->hot.x;
1564 p.y=pa[0].y - img->hot.y;
1565 gra->meth.draw_image(gra->priv, gra->gc[0]->priv, &p, img->priv);
1570 dbg(1,"image: '%s'\n", di->label);
1571 if (gra->meth.draw_image_warp)
1572 gra->meth.draw_image_warp(gra->priv, gra->gc[0]->priv, pa, count, di->label);
1574 dbg(0,"draw_image_warp not supported by graphics driver drawing '%s'\n", di->label);
1576 case element_arrows:
1577 display_draw_arrows(gra,gc,pa,count);
1580 printf("Unhandled element type %d\n", e->type);
1588 * @author Martin Schaller (04/2008)
1590 static void xdisplay_draw_elements(struct graphics *gra, struct displaylist *display_list, struct itemgra *itm)
1595 enum item_type type;
1601 display_list->dc.e=e;
1604 type=GPOINTER_TO_INT(types->data);
1605 h=g_hash_table_lookup(display_list->dl, GINT_TO_POINTER(type));
1607 if (type == type_poly_water_tiled) {
1608 mindist=display_list->dc.mindist;
1609 display_list->dc.mindist=0;
1611 g_hash_table_foreach(h, (GHFunc)displayitem_draw, &display_list->dc);
1612 display_context_free(&display_list->dc);
1613 if (type == type_poly_water_tiled)
1614 display_list->dc.mindist=mindist;
1616 types=g_list_next(types);
1623 graphics_draw_itemgra(struct graphics *gra, struct itemgra *itm, struct transformation *t)
1631 struct graphics_gc *gc = NULL;
1632 struct graphics_image *img;
1638 struct element *e=es->data;
1639 int count=e->coord_count;
1640 struct point pnt[count+1];
1642 transform(t, projection_screen, e->coord, pnt, count, 0, 0, NULL);
1644 transform(t, projection_screen, &c, pnt, 1, 0, 0, NULL);
1647 gc=graphics_gc_new(gra);
1648 gc->meth.gc_set_foreground(gc->priv, &e->color);
1650 case element_polyline:
1651 if (e->u.polyline.width > 1)
1652 gc->meth.gc_set_linewidth(gc->priv, e->u.polyline.width);
1653 if (e->u.polyline.width > 0 && e->u.polyline.dash_num > 0)
1654 graphics_gc_set_dashes(gc, e->u.polyline.width,
1655 e->u.polyline.offset,
1656 e->u.polyline.dash_table,
1657 e->u.polyline.dash_num);
1658 gra->meth.draw_lines(gra->priv, gc->priv, pnt, count);
1660 case element_polygon:
1661 gra->meth.draw_polygon(gra->priv, gc->priv, pnt, count);
1663 case element_circle:
1664 if (e->u.circle.width > 1)
1665 gc->meth.gc_set_linewidth(gc->priv, e->u.polyline.width);
1666 gra->meth.draw_circle(gra->priv, gc->priv, &pnt[0], e->u.circle.radius);
1668 // Leftover code, displayitem_draw is intended to be merged with with graphics_draw_itemgra
1669 if (label && e->text_size) {
1670 struct graphics_font *font=get_font(gra, e->text_size);
1674 gra->meth.draw_text(gra->priv, gra->gc[2]->priv, gra->gc[1]->priv, font->priv, label, &p, 0x10000, 0);
1676 dbg(0,"Failed to get font with size %d\n",e->text_size);
1681 path=graphics_icon_path(e->u.icon.src);
1682 img=graphics_image_new_scaled_rotated(gra, path, e->u.icon.width, e->u.icon.height, e->u.icon.rotation);
1685 dbg(0,"failed to load icon '%s'\n", e->u.icon.src);
1687 p.x=pnt[0].x - img->hot.x;
1688 p.y=pnt[0].y - img->hot.y;
1689 gra->meth.draw_image(gra->priv, gc->priv, &p, img->priv);
1690 graphics_image_free(gra, img);
1694 dbg(0,"dont know how to draw %d\n", e->type);
1696 graphics_gc_destroy(gc);
1705 * @author Martin Schaller (04/2008)
1707 static void xdisplay_draw_layer(struct displaylist *display_list, struct graphics *gra, struct layer *lay, int order)
1710 struct itemgra *itm;
1715 if (order >= itm->order.min && order <= itm->order.max)
1716 xdisplay_draw_elements(gra, display_list, itm);
1717 itms=g_list_next(itms);
1725 * @author Martin Schaller (04/2008)
1727 static void xdisplay_draw(struct displaylist *display_list, struct graphics *gra, struct layout *l, int order)
1735 xdisplay_draw_layer(display_list, gra, lay, order);
1736 lays=g_list_next(lays);
1744 * @author Martin Schaller (04/2008)
1746 extern void *route_selection;
1749 do_draw(struct displaylist *displaylist, int cancel, int flags)
1752 int count,max=16384,workload=0;
1753 struct coord ca[max];
1758 if (!displaylist->msh)
1759 displaylist->msh=mapset_open(displaylist->ms);
1760 if (!displaylist->m) {
1761 displaylist->m=mapset_next(displaylist->msh, 1);
1762 if (!displaylist->m) {
1763 mapset_close(displaylist->msh);
1764 displaylist->msh=NULL;
1767 displaylist->dc.pro=map_projection(displaylist->m);
1768 displaylist->conv=map_requires_conversion(displaylist->m);
1769 displaylist->sel=transform_get_selection(displaylist->dc.trans, displaylist->dc.pro, displaylist->order);
1770 displaylist->mr=map_rect_new(displaylist->m, displaylist->sel);
1772 if (displaylist->mr) {
1773 while ((item=map_rect_get_item(displaylist->mr))) {
1774 count=item_coord_get_within_selection(item, ca, item->type < type_line ? 1: max, displaylist->sel);
1778 dbg(0,"point count overflow %d for %s "ITEM_ID_FMT"\n", count,item_to_name(item->type),ITEM_ID_ARGS(*item));
1779 if (!item_attr_get(item, attr_label, &attr))
1781 if (displaylist->conv && attr.u.str && attr.u.str[0]) {
1782 char *str=map_convert_string(displaylist->m, attr.u.str);
1783 display_add(displaylist, item, count, ca, str);
1784 map_convert_free(str);
1786 display_add(displaylist, item, count, ca, attr.u.str);
1788 if (workload == displaylist->workload)
1791 map_rect_destroy(displaylist->mr);
1793 map_selection_destroy(displaylist->sel);
1794 displaylist->mr=NULL;
1795 displaylist->sel=NULL;
1796 displaylist->m=NULL;
1798 profile(1,"process_selection\n");
1799 event_remove_idle(displaylist->idle_ev);
1800 displaylist->idle_ev=NULL;
1801 callback_destroy(displaylist->idle_cb);
1802 displaylist->idle_cb=NULL;
1803 displaylist->busy=0;
1804 graphics_process_selection(displaylist->dc.gra, displaylist);
1805 profile(1,"draw\n");
1807 graphics_displaylist_draw(displaylist->dc.gra, displaylist, displaylist->dc.trans, displaylist->layout, flags);
1808 map_rect_destroy(displaylist->mr);
1809 map_selection_destroy(displaylist->sel);
1810 mapset_close(displaylist->msh);
1811 displaylist->mr=NULL;
1812 displaylist->sel=NULL;
1813 displaylist->m=NULL;
1814 displaylist->msh=NULL;
1815 profile(1,"callback\n");
1816 callback_call_1(displaylist->cb, cancel);
1824 * @author Martin Schaller (04/2008)
1826 void graphics_displaylist_draw(struct graphics *gra, struct displaylist *displaylist, struct transformation *trans, struct layout *l, int flags)
1828 int order=transform_get_order(trans);
1829 displaylist->dc.trans=trans;
1830 displaylist->dc.gra=gra;
1831 displaylist->dc.mindist=transform_get_scale(trans)/2;
1832 // FIXME find a better place to set the background color
1834 graphics_gc_set_background(gra->gc[0], &l->color);
1835 graphics_gc_set_foreground(gra->gc[0], &l->color);
1836 gra->default_font = g_strdup(l->font);
1838 graphics_background_gc(gra, gra->gc[0]);
1839 gra->meth.draw_mode(gra->priv, (flags & 8)?draw_mode_begin_clear:draw_mode_begin);
1841 gra->meth.draw_rectangle(gra->priv, gra->gc[0]->priv, &gra->r.lu, gra->r.rl.x-gra->r.lu.x, gra->r.rl.y-gra->r.lu.y);
1843 xdisplay_draw(displaylist, gra, l, order+l->order_delta);
1845 callback_list_call_attr_0(gra->cbl, attr_postdraw);
1847 gra->meth.draw_mode(gra->priv, draw_mode_end);
1850 static void graphics_load_mapset(struct graphics *gra, struct displaylist *displaylist, struct mapset *mapset, struct transformation *trans, struct layout *l, int async, struct callback *cb, int flags)
1852 int order=transform_get_order(trans);
1855 if (displaylist->busy) {
1858 do_draw(displaylist, 1, flags);
1860 xdisplay_free(displaylist->dl);
1861 dbg(1,"order=%d\n", order);
1863 displaylist->dc.gra=gra;
1864 displaylist->ms=mapset;
1865 displaylist->dc.trans=trans;
1866 displaylist->workload=async ? 100 : 0;
1869 order+=l->order_delta;
1870 displaylist->order=order;
1871 displaylist->busy=1;
1872 displaylist->layout=l;
1874 if (! displaylist->idle_cb)
1875 displaylist->idle_cb=callback_new_3(callback_cast(do_draw), displaylist, 0, flags);
1876 displaylist->idle_ev=event_add_idle(50, displaylist->idle_cb);
1878 do_draw(displaylist, 0, flags);
1884 * @author Martin Schaller (04/2008)
1886 void graphics_draw(struct graphics *gra, struct displaylist *displaylist, struct mapset *mapset, struct transformation *trans, struct layout *l, int async, struct callback *cb, int flags)
1888 graphics_load_mapset(gra, displaylist, mapset, trans, l, async, cb, flags);
1892 graphics_draw_cancel(struct graphics *gra, struct displaylist *displaylist)
1894 if (!displaylist->busy)
1896 do_draw(displaylist, 1, 0);
1904 * @author Martin Schaller (04/2008)
1906 struct displaylist_handle {
1907 GList *hl_head,*hl,*l_head,*l;
1914 * @author Martin Schaller (04/2008)
1916 struct displaylist_handle * graphics_displaylist_open(struct displaylist *displaylist)
1918 struct displaylist_handle *ret;
1920 ret=g_new0(struct displaylist_handle, 1);
1921 ret->hl_head=ret->hl=g_hash_to_list(displaylist->dl);
1922 ret->l_head=ret->l=g_hash_to_list_keys(ret->hl->data);
1931 * @author Martin Schaller (04/2008)
1933 struct displayitem * graphics_displaylist_next(struct displaylist_handle *dlh)
1935 struct displayitem *ret;
1937 dlh->hl=g_list_next(dlh->hl);
1940 g_list_free(dlh->l_head);
1941 dlh->l_head=dlh->l=g_hash_to_list_keys(dlh->hl->data);
1944 dlh->l=g_list_next(dlh->l);
1952 * @author Martin Schaller (04/2008)
1954 void graphics_displaylist_close(struct displaylist_handle *dlh)
1956 g_list_free(dlh->hl_head);
1957 g_list_free(dlh->l_head);
1965 * @author Martin Schaller (04/2008)
1967 struct displaylist * graphics_displaylist_new(void)
1969 struct displaylist *ret=g_new0(struct displaylist, 1);
1971 ret->dl=g_hash_table_new(NULL,NULL);
1980 * @author Martin Schaller (04/2008)
1982 struct item * graphics_displayitem_get_item(struct displayitem *di)
1991 * @author Martin Schaller (04/2008)
1993 char * graphics_displayitem_get_label(struct displayitem *di)
1999 graphics_displayitem_get_displayed(struct displayitem *di)
2001 return di->displayed;
2008 * @author Martin Schaller (04/2008)
2010 static int within_dist_point(struct point *p0, struct point *p1, int dist)
2012 if (p0->x == 32767 || p0->y == 32767 || p1->x == 32767 || p1->y == 32767)
2014 if (p0->x == -32768 || p0->y == -32768 || p1->x == -32768 || p1->y == -32768)
2016 if ((p0->x-p1->x)*(p0->x-p1->x) + (p0->y-p1->y)*(p0->y-p1->y) <= dist*dist) {
2026 * @author Martin Schaller (04/2008)
2028 static int within_dist_line(struct point *p, struct point *line_p0, struct point *line_p1, int dist)
2032 struct point line_p;
2034 if (line_p0->x < line_p1->x) {
2035 if (p->x < line_p0->x - dist)
2037 if (p->x > line_p1->x + dist)
2040 if (p->x < line_p1->x - dist)
2042 if (p->x > line_p0->x + dist)
2045 if (line_p0->y < line_p1->y) {
2046 if (p->y < line_p0->y - dist)
2048 if (p->y > line_p1->y + dist)
2051 if (p->y < line_p1->y - dist)
2053 if (p->y > line_p0->y + dist)
2057 vx=line_p1->x-line_p0->x;
2058 vy=line_p1->y-line_p0->y;
2064 return within_dist_point(p, line_p0, dist);
2067 return within_dist_point(p, line_p1, dist);
2069 line_p.x=line_p0->x+vx*c1/c2;
2070 line_p.y=line_p0->y+vy*c1/c2;
2071 return within_dist_point(p, &line_p, dist);
2078 * @author Martin Schaller (04/2008)
2080 static int within_dist_polyline(struct point *p, struct point *line_pnt, int count, int dist, int close)
2083 for (i = 0 ; i < count-1 ; i++) {
2084 if (within_dist_line(p,line_pnt+i,line_pnt+i+1,dist)) {
2089 return (within_dist_line(p,line_pnt,line_pnt+count-1,dist));
2097 * @author Martin Schaller (04/2008)
2099 static int within_dist_polygon(struct point *p, struct point *poly_pnt, int count, int dist)
2102 for (i = 0, j = count-1; i < count; j = i++) {
2103 if ((((poly_pnt[i].y <= p->y) && ( p->y < poly_pnt[j].y )) ||
2104 ((poly_pnt[j].y <= p->y) && ( p->y < poly_pnt[i].y))) &&
2105 (p->x < (poly_pnt[j].x - poly_pnt[i].x) * (p->y - poly_pnt[i].y) / (poly_pnt[j].y - poly_pnt[i].y) + poly_pnt[i].x))
2109 return within_dist_polyline(p, poly_pnt, count, dist, 1);
2117 * @author Martin Schaller (04/2008)
2119 int graphics_displayitem_within_dist(struct displaylist *displaylist, struct displayitem *di, struct point *p, int dist)
2121 struct point pa[16384];
2124 count=transform(displaylist->dc.trans, displaylist->dc.pro, di->c, pa, di->count, 1, 0, NULL);
2126 if (di->item.type < type_line) {
2127 return within_dist_point(p, &pa[0], dist);
2129 if (di->item.type < type_area) {
2130 return within_dist_polyline(p, pa, count, dist, 0);
2132 return within_dist_polygon(p, pa, count, dist);
2136 static enum item_type
2137 graphics_selection_type(enum item_type type)
2139 if (type < type_line)
2140 return type_selected_point;
2141 if (type < type_area)
2142 return type_selected_line;
2143 return type_selected_area;
2149 graphics_process_selection_item(struct displaylist *dl, struct item *item)
2151 struct displayitem di,*di_res;
2158 h=g_hash_table_lookup(dl->dl, GINT_TO_POINTER(di.item.type));
2160 di_res=g_hash_table_lookup(h, &di);
2162 di.item.type=graphics_selection_type(di.item.type);
2163 display_add(dl, &di.item, di_res->count, di_res->c, NULL);
2169 graphics_add_selection(struct graphics *gra, struct item *item, struct displaylist *dl)
2171 struct item *item_dup=g_new(struct item, 1);
2173 gra->selection=g_list_append(gra->selection, item_dup);
2175 graphics_process_selection_item(dl, item_dup);
2179 graphics_remove_selection(struct graphics *gra, struct item *item, struct displaylist *dl)
2185 curr=gra->selection;
2188 struct item *sitem=curr->data;
2189 if (item_is_equal(*item,*sitem)) {
2191 struct displayitem di;
2197 di.item.type=graphics_selection_type(di.item.type);
2198 h=g_hash_table_lookup(dl->dl, GINT_TO_POINTER(di.item.type));
2200 g_hash_table_remove(h, &di);
2203 gra->selection=g_list_remove(gra->selection, curr->data);
2214 graphics_clear_selection(struct graphics *gra, struct displaylist *dl)
2216 while (gra->selection)
2217 graphics_remove_selection(gra, (struct item *)gra->selection->data, dl);
2221 graphics_process_selection(struct graphics *gra, struct displaylist *dl)
2225 curr=gra->selection;
2227 struct item *item=curr->data;
2228 graphics_process_selection_item(dl, item);
2229 curr=g_list_next(curr);