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-rw-r--r--map.c223
1 files changed, 204 insertions, 19 deletions
diff --git a/map.c b/map.c
index 5fb02c2..5a6a349 100644
--- a/map.c
+++ b/map.c
@@ -1,18 +1,75 @@
-/* $Id: map.c,v 1.4 2001/11/24 02:01:26 ukai Exp $ */
+/* $Id: map.c,v 1.5 2002/01/31 17:54:52 ukai Exp $ */
/*
* client-side image maps
*/
#include "fm.h"
+#include <math.h>
#ifdef MENU_MAP
+#ifdef USE_IMAGE
+static int
+inMapArea(MapArea * a, int x, int y)
+{
+ int i;
+ double r1, r2, s, c, t;
+
+ if (!a)
+ return FALSE;
+ switch (a->shape) {
+ case SHAPE_RECT:
+ if (x >= a->coords[0] && y >= a->coords[1] &&
+ x <= a->coords[2] && y <= a->coords[3])
+ return TRUE;
+ break;
+ case SHAPE_CIRCLE:
+ if ((x - a->coords[0]) * (x - a->coords[0])
+ + (y - a->coords[1]) * (y - a->coords[1])
+ <= a->coords[2] * a->coords[2])
+ return TRUE;
+ break;
+ case SHAPE_POLY:
+ for (t = 0, i = 0; i < a->ncoords; i += 2) {
+ r1 = sqrt((double)(x - a->coords[i]) * (x - a->coords[i])
+ + (double)(y - a->coords[i + 1]) * (y -
+ a->coords[i + 1]));
+ r2 = sqrt((double)(x - a->coords[i + 2]) * (x - a->coords[i + 2])
+ + (double)(y - a->coords[i + 3]) * (y -
+ a->coords[i + 3]));
+ if (r1 == 0 || r2 == 0)
+ return TRUE;
+ s = ((double)(x - a->coords[i]) * (y - a->coords[i + 3])
+ - (double)(x - a->coords[i + 2]) * (y -
+ a->coords[i +
+ 1])) / r1 / r2;
+ c = ((double)(x - a->coords[i]) * (x - a->coords[i + 2])
+ + (double)(y - a->coords[i + 1]) * (y -
+ a->coords[i +
+ 3])) / r1 / r2;
+ t += atan2(s, c);
+ }
+ if (fabs(t) > 2 * 3.14)
+ return TRUE;
+ break;
+ case SHAPE_DEFAULT:
+ return TRUE;
+ default:
+ break;
+ }
+ return FALSE;
+}
+#endif
+
char *
-follow_map_menu(Buffer *buf, struct parsed_tagarg *arg, int x, int y)
+follow_map_menu(Buffer *buf, struct parsed_tagarg *arg, Anchor *a_img, int x,
+ int y)
{
MapList *ml;
+ ListItem *al;
+ MapArea *a;
char *name;
- TextListItem *t, *s;
- int i, n, selected = -1;
+ int i, n, selected = -1, initial;
char **label;
+ int px, py, map = 0;
name = tag_get_value(arg, "link");
if (name == NULL)
@@ -22,24 +79,49 @@ follow_map_menu(Buffer *buf, struct parsed_tagarg *arg, int x, int y)
if (!Strcmp_charp(ml->name, name))
break;
}
- if (ml == NULL)
+ if (ml == NULL || ml->area == NULL)
return NULL;
- for (n = 0, t = ml->urls->first; t != NULL; n++, t = t->next) ;
+ n = ml->area->nitem;
if (n == 0)
return NULL;
label = New_N(char *, n + 1);
- for (i = 0, t = ml->urls->first, s = ml->alts->first; t != NULL;
- i++, t = t->next, s = s->next)
- label[i] = *s->ptr ? s->ptr : t->ptr;
+#ifdef USE_IMAGE
+ if (getMapXY(buf, a_img, &px, &py))
+ map = 1;
+#endif
+ initial = -n;
+ for (i = 0, al = ml->area->first; al != NULL; i++, al = al->next) {
+ a = (MapArea *) al->ptr;
+ if (a) {
+ label[i] = *a->alt ? a->alt : a->url;
+#ifdef USE_IMAGE
+ if (initial < 0 && map && inMapArea(a, px, py)) {
+ if (a->shape == SHAPE_DEFAULT) {
+ if (initial == -n)
+ initial = -i;
+ }
+ else
+ initial = i;
+ }
+#endif
+ }
+ else
+ label[i] = "";
+ }
label[n] = NULL;
+ if (initial == -n)
+ initial = 0;
+ else if (initial < 0)
+ initial *= -1;
- optionMenu(x, y, label, &selected, 0, NULL);
+ optionMenu(x, y, label, &selected, initial, NULL);
if (selected >= 0) {
- for (i = 0, t = ml->urls->first; t != NULL; i++, t = t->next)
- if (i == selected)
- return t->ptr;
+ for (i = 0, al = ml->area->first; al != NULL; i++, al = al->next) {
+ if (al->ptr && i == selected)
+ return ((MapArea *) al->ptr)->url;
+ }
}
return NULL;
}
@@ -53,8 +135,9 @@ follow_map_panel(Buffer *buf, struct parsed_tagarg *arg)
{
Str mappage;
MapList *ml;
+ ListItem *al;
+ MapArea *a;
char *name;
- TextListItem *t, *s;
ParsedURL pu;
name = tag_get_value(arg, "link");
@@ -69,15 +152,17 @@ follow_map_panel(Buffer *buf, struct parsed_tagarg *arg)
return NULL;
mappage = Strnew_charp(map1);
- for (t = ml->urls->first, s = ml->alts->first; t != NULL;
- t = t->next, s = s->next) {
- parseURL2(t->ptr, &pu, baseURL(buf));
+ for (al = ml->area->first; al != NULL; al = al->next) {
+ a = (MapArea *) al->ptr;
+ if (!a)
+ continue;
+ parseURL2(a->url, &pu, baseURL(buf));
Strcat_charp(mappage, "<a href=\"");
Strcat_charp(mappage, html_quote(parsedURL2Str(&pu)->ptr));
Strcat_charp(mappage, "\">");
- Strcat_charp(mappage, html_quote(s->ptr));
+ Strcat_charp(mappage, html_quote(a->alt));
Strcat_charp(mappage, " ");
- Strcat_charp(mappage, html_quote(t->ptr));
+ Strcat_charp(mappage, html_quote(a->url));
Strcat_charp(mappage, "</a><br>\n");
}
Strcat_charp(mappage, "</body></html>");
@@ -86,6 +171,106 @@ follow_map_panel(Buffer *buf, struct parsed_tagarg *arg)
}
#endif
+#ifdef USE_IMAGE
+int
+getMapXY(Buffer *buf, Anchor *a, int *x, int *y)
+{
+ if (!buf || !a || !a->image || !x || !y)
+ return 0;
+ *x = (int)((buf->currentColumn + buf->cursorX
+ - COLPOS(buf->currentLine, a->start.pos) + 0.5)
+ * pixel_per_char) - a->image->xoffset;
+ *y = (int)((buf->currentLine->linenumber - a->image->y + 0.5)
+ * pixel_per_line) - a->image->yoffset;
+ if (*x <= 0)
+ *x = 1;
+ if (*y <= 0)
+ *y = 1;
+ return 1;
+}
+#endif
+
+MapArea *
+newMapArea(char *url, char *alt, char *shape, char *coords)
+{
+ MapArea *a = New(MapArea);
+#ifdef MENU_MAP
+ char *p;
+ int i, max;
+#endif
+
+ a->url = url;
+ a->alt = alt ? alt : "";
+#ifdef MENU_MAP
+#ifdef USE_IMAGE
+ a->shape = SHAPE_RECT;
+ if (shape) {
+ if (!strcasecmp(shape, "default"))
+ a->shape = SHAPE_DEFAULT;
+ else if (!strncasecmp(shape, "rect", 4))
+ a->shape = SHAPE_RECT;
+ else if (!strncasecmp(shape, "circ", 4))
+ a->shape = SHAPE_CIRCLE;
+ else if (!strncasecmp(shape, "poly", 4))
+ a->shape = SHAPE_POLY;
+ else
+ a->shape = SHAPE_UNKNOWN;
+ }
+ a->coords = NULL;
+ a->ncoords = 0;
+ if (a->shape == SHAPE_UNKNOWN || a->shape == SHAPE_DEFAULT)
+ return a;
+ if (!coords) {
+ a->shape = SHAPE_UNKNOWN;
+ return a;
+ }
+ if (a->shape == SHAPE_RECT) {
+ a->coords = New_N(short, 4);
+ a->ncoords = 4;
+ }
+ else if (a->shape == SHAPE_CIRCLE) {
+ a->coords = New_N(short, 3);
+ a->ncoords = 3;
+ }
+ max = a->ncoords;
+ for (i = 0, p = coords; (a->shape == SHAPE_POLY || i < a->ncoords) && *p;) {
+ while (IS_SPACE(*p))
+ p++;
+ if (!IS_DIGIT(*p))
+ break;
+ if (a->shape == SHAPE_POLY) {
+ if (max <= i) {
+ max = i ? i * 2 : 6;
+ a->coords = New_Reuse(short, a->coords, max + 2);
+ }
+ a->ncoords++;
+ }
+ a->coords[i] = (short)atoi(p);
+ i++;
+ while (IS_DIGIT(*p))
+ p++;
+ if (*p != ',' && !IS_SPACE(*p))
+ break;
+ while (IS_SPACE(*p))
+ p++;
+ if (*p == ',')
+ p++;
+ }
+ if (i != a->ncoords || (a->shape == SHAPE_POLY && a->ncoords < 6)) {
+ a->shape = SHAPE_UNKNOWN;
+ a->coords = NULL;
+ a->ncoords = 0;
+ }
+ if (a->shape == SHAPE_POLY) {
+ a->ncoords = a->ncoords / 2 * 2;
+ a->coords[a->ncoords] = a->coords[0];
+ a->coords[a->ncoords + 1] = a->coords[1];
+ }
+#endif
+#endif
+ return a;
+}
+
/* append frame URL */
static void
append_frame_info(Buffer *buf, Str html, struct frameset *set, int level)
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-21 18:26:16 +0000