Changeset 81ec7e1 in mainline for uspace/lib/ui/src/paint.c

Timestamp:

2021-08-31T08:57:24Z (4 years ago)

Author:

Jiri Svoboda <jiri@…>

Branches:

master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

b79c91cc

Parents:

ff6e91b

git-author:

Jiri Svoboda <jiri@…> (2021-08-30 20:57:08)

git-committer:

Jiri Svoboda <jiri@…> (2021-08-31 08:57:24)

Message:

Brace for a text mode menu separator entry

Pun intended.

File:

• uspace/lib/ui/src/paint.c (modified) (2 diffs)

uspace/lib/ui/src/paint.c

@@ -62 +62 @@
 };
 
+/** Single horizontal brace characters */
+static ui_brace_chars_t single_hbrace_chars = {
+        .start = "\u251c",
+        .middle = "\u2500",
+        .end = "\u2524"
+};
+
+/** Double horizontal brace characters */
+static ui_brace_chars_t double_hbrace_chars = {
+        .start = "\u2560",
+        .middle = "\u2550",
+        .end = "\u2563"
+};
+
 /** Paint bevel.
  *
@@ -462 +476 @@
 }
 
+/** Paint a text horizontal brace.
+ *
+ * @param resource UI resource
+ * @param rect Rectangle inside which to paint the brace (height should
+ *             be 1).
+ * @param style Box style
+ * @param color Color
+ * @return EOK on success or an error code
+ */
+errno_t ui_paint_text_hbrace(ui_resource_t *resource, gfx_rect_t *rect,
+    ui_box_style_t style, gfx_color_t *color)
+{
+        errno_t rc;
+        gfx_text_fmt_t fmt;
+        gfx_rect_t srect;
+        gfx_coord2_t pos;
+        gfx_coord2_t dim;
+        size_t bufsz;
+        size_t off;
+        int i;
+        char *str = NULL;
+        ui_brace_chars_t *hbc = NULL;
+
+        gfx_rect_points_sort(rect, &srect);
+        gfx_rect_dims(&srect, &dim);
+
+        /* Is rectangle large enough to hold brace? */
+        if (dim.x < 2 || dim.y < 1)
+                return EOK;
+
+        switch (style) {
+        case ui_box_single:
+                hbc = &single_hbrace_chars;
+                break;
+        case ui_box_double:
+                hbc = &double_hbrace_chars;
+                break;
+        }
+
+        if (hbc == NULL)
+                return EINVAL;
+
+        gfx_text_fmt_init(&fmt);
+        fmt.color = color;
+
+        bufsz = str_size(hbc->start) +
+            str_size(hbc->middle) * (dim.x - 2) +
+            str_size(hbc->end) + 1;
+
+        str = malloc(bufsz);
+        if (str == NULL)
+                return ENOMEM;
+
+        str_cpy(str, bufsz, hbc->start);
+        off = str_size(hbc->start);
+
+        for (i = 1; i < dim.x - 1; i++) {
+                str_cpy(str + off, bufsz - off, hbc->middle);
+                off += str_size(hbc->middle);
+        }
+
+        str_cpy(str + off, bufsz - off, hbc->end);
+        off += str_size(hbc->end);
+        str[off] = '\0';
+
+        pos = rect->p0;
+        rc = gfx_puttext(resource->font, &pos, &fmt, str);
+        if (rc != EOK)
+                goto error;
+
+        free(str);
+        return EOK;
+error:
+        if (str != NULL)
+                free(str);
+        return rc;
+}
+
 /** @}
  */