* unchanged. However, on the printing side it tracks print colours
* so the front end API doesn't have to.
*
- * FIXME: could we also sort out rewrite_statusbar in here? Also
- * I'd _like_ to do automatic draw_updates, but it's a pain for
- * draw_text in particular - I could invent a front end API which
- * retrieved the text bounds and then do the alignment myself as
- * well, except that that doesn't work for PS. As usual.
+ * FIXME:
+ *
+ * - I'd _like_ to do automatic draw_updates, but it's a pain for
+ * draw_text in particular. I'd have to invent a front end API
+ * which retrieved the text bounds.
+ * + that might allow me to do the alignment centrally as well?
+ * * perhaps not, because PS can't return this information,
+ * so there would have to be a special case for it.
+ * + however, that at least doesn't stand in the way of using
+ * the text bounds for draw_update, because PS doesn't need
+ * draw_update since it's printing-only. Any _interactive_
+ * drawing API couldn't get away with refusing to tell you
+ * what parts of the screen a text draw had covered, because
+ * you would inevitably need to erase it later on.
*/
#include <stdio.h>
#include <stdlib.h>
+#include <string.h>
#include <assert.h>
#include <math.h>
struct print_colour *colours;
int ncolours, coloursize;
float scale;
+ /* `me' is only used in status_bar(), so print-oriented instances of
+ * this may set it to NULL. */
+ midend *me;
+ char *laststatus;
};
-drawing *drawing_init(const drawing_api *api, void *handle)
+drawing *drawing_new(const drawing_api *api, midend *me, void *handle)
{
drawing *dr = snew(drawing);
dr->api = api;
dr->colours = NULL;
dr->ncolours = dr->coloursize = 0;
dr->scale = 1.0F;
+ dr->me = me;
+ dr->laststatus = NULL;
return dr;
}
void drawing_free(drawing *dr)
{
+ sfree(dr->laststatus);
sfree(dr->colours);
sfree(dr);
}
void status_bar(drawing *dr, char *text)
{
- if (dr->api->status_bar)
- dr->api->status_bar(dr->handle, text);
+ char *rewritten;
+
+ if (!dr->api->status_bar)
+ return;
+
+ assert(dr->me);
+
+ rewritten = midend_rewrite_statusbar(dr->me, text);
+ if (!dr->laststatus || strcmp(rewritten, dr->laststatus)) {
+ dr->api->status_bar(dr->handle, rewritten);
+ sfree(dr->laststatus);
+ dr->laststatus = rewritten;
+ } else {
+ sfree(rewritten);
+ }
}
blitter *blitter_new(drawing *dr, int w, int h)