struct print_colour {
int hatch;
+ int hatch_when; /* 0=never 1=only-in-b&w 2=always */
float r, g, b;
+ float grey;
};
struct drawing {
dr->api->end_draw(dr->handle);
}
+char *text_fallback(drawing *dr, const char *const *strings, int nstrings)
+{
+ int i;
+
+ /*
+ * If the drawing implementation provides one of these, use it.
+ */
+ if (dr && dr->api->text_fallback)
+ return dr->api->text_fallback(dr->handle, strings, nstrings);
+
+ /*
+ * Otherwise, do the simple thing and just pick the first string
+ * that fits in plain ASCII. It will then need no translation
+ * out of UTF-8.
+ */
+ for (i = 0; i < nstrings; i++) {
+ const char *p;
+
+ for (p = strings[i]; *p; p++)
+ if (*p & 0x80)
+ break;
+ if (!*p)
+ return dupstr(strings[i]);
+ }
+
+ /*
+ * The caller was responsible for making sure _some_ string in
+ * the list was in plain ASCII.
+ */
+ assert(!"Should never get here");
+ return NULL; /* placate optimiser */
+}
+
void status_bar(drawing *dr, char *text)
{
char *rewritten;
dr->api->end_doc(dr->handle);
}
-void print_get_colour(drawing *dr, int colour, int *hatch,
- float *r, float *g, float *b)
+void print_get_colour(drawing *dr, int colour, int printing_in_colour,
+ int *hatch, float *r, float *g, float *b)
{
assert(colour >= 0 && colour < dr->ncolours);
- *hatch = dr->colours[colour].hatch;
- *r = dr->colours[colour].r;
- *g = dr->colours[colour].g;
- *b = dr->colours[colour].b;
+ if (dr->colours[colour].hatch_when == 2 ||
+ (dr->colours[colour].hatch_when == 1 && !printing_in_colour)) {
+ *hatch = dr->colours[colour].hatch;
+ } else {
+ *hatch = -1;
+ if (printing_in_colour) {
+ *r = dr->colours[colour].r;
+ *g = dr->colours[colour].g;
+ *b = dr->colours[colour].b;
+ } else {
+ *r = *g = *b = dr->colours[colour].grey;
+ }
+ }
}
-int print_rgb_colour(drawing *dr, int hatch, float r, float g, float b)
+static int print_generic_colour(drawing *dr, float r, float g, float b,
+ float grey, int hatch, int hatch_when)
{
if (dr->ncolours >= dr->coloursize) {
dr->coloursize = dr->ncolours + 16;
struct print_colour);
}
dr->colours[dr->ncolours].hatch = hatch;
+ dr->colours[dr->ncolours].hatch_when = hatch_when;
dr->colours[dr->ncolours].r = r;
dr->colours[dr->ncolours].g = g;
dr->colours[dr->ncolours].b = b;
+ dr->colours[dr->ncolours].grey = grey;
return dr->ncolours++;
}
-int print_grey_colour(drawing *dr, int hatch, float grey)
+int print_mono_colour(drawing *dr, int grey)
+{
+ return print_generic_colour(dr, grey, grey, grey, grey, -1, 0);
+}
+
+int print_grey_colour(drawing *dr, float grey)
{
- return print_rgb_colour(dr, hatch, grey, grey, grey);
+ return print_generic_colour(dr, grey, grey, grey, grey, -1, 0);
}
-int print_mono_colour(drawing *dr, int grey)
+int print_hatched_colour(drawing *dr, int hatch)
+{
+ return print_generic_colour(dr, 0, 0, 0, 0, hatch, 2);
+}
+
+int print_rgb_mono_colour(drawing *dr, float r, float g, float b, int grey)
+{
+ return print_generic_colour(dr, r, g, b, grey, -1, 0);
+}
+
+int print_rgb_grey_colour(drawing *dr, float r, float g, float b, float grey)
+{
+ return print_generic_colour(dr, r, g, b, grey, -1, 0);
+}
+
+int print_rgb_hatched_colour(drawing *dr, float r, float g, float b, int hatch)
{
- return print_rgb_colour(dr, grey ? HATCH_CLEAR : HATCH_SOLID,
- grey, grey, grey);
+ return print_generic_colour(dr, r, g, b, 0, hatch, 1);
}
void print_line_width(drawing *dr, int width)
* _square root_ of the main puzzle scale. Double the puzzle
* size, and the line width multiplies by 1.4.
*/
- dr->api->line_width(dr->handle, sqrt(dr->scale) * width);
+ dr->api->line_width(dr->handle, (float)sqrt(dr->scale) * width);
+}
+
+void print_line_dotted(drawing *dr, int dotted)
+{
+ dr->api->line_dotted(dr->handle, dotted);
}