Changeset 9eb8d12 in mainline for uspace/lib/gfxfont/src/text.c

Timestamp:

2021-07-19T22:35:19Z (4 years ago)

Author:

Jiri Svoboda <jiri@…>

Branches:

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

Children:

c9722c1

Parents:

ead72f2

Message:

Entry text selection (using keyboard)

Text can be selected with movement keys while holding down Shift.
Selection can be deleted by pressing Backspace, Delete or typing
in replacement text.

File:

• uspace/lib/gfxfont/src/text.c (modified) (2 diffs)

uspace/lib/gfxfont/src/text.c

@@ -174 +174 @@
  * @param str String
  * @param spos Place to store starting position
- * @return EOK on success or an error code
  */
 void gfx_text_start_pos(gfx_font_t *font, gfx_coord2_t *pos,
@@ -333 +332 @@
 }
 
+/** Get text continuation parameters.
+ *
+ * Return the anchor position and format needed to continue printing
+ * text after the specified string. It is allowed for the sources
+ * (@a pos, @a fmt) and destinations (@a cpos, @a cfmt) to point
+ * to the same objects, respectively.
+ *
+ * @param font Font
+ * @param pos Anchor position
+ * @param fmt Text formatting
+ * @param str String
+ * @param cpos Place to store anchor position for continuation
+ * @param cfmt Place to store format for continuation
+ */
+void gfx_text_cont(gfx_font_t *font, gfx_coord2_t *pos,
+    gfx_text_fmt_t *fmt, const char *str, gfx_coord2_t *cpos,
+    gfx_text_fmt_t *cfmt)
+{
+        gfx_coord2_t spos;
+        gfx_text_fmt_t tfmt;
+
+        /* Continuation should start where the current string ends */
+        gfx_text_start_pos(font, pos, fmt, str, &spos);
+        cpos->x = spos.x + gfx_text_width(font, str);
+        cpos->y = spos.y;
+
+        /*
+         * Formatting is the same, except the text should be aligned
+         * so that it starts at the anchor point.
+         */
+        tfmt = *fmt;
+        tfmt.halign = gfx_halign_left;
+        tfmt.valign = gfx_valign_baseline;
+
+        *cfmt = tfmt;
+}
+
+/** Get text bounding rectangle.
+ *
+ * @param font Font
+ * @param pos Anchor position
+ * @param fmt Text formatting
+ * @param str String
+ * @param rect Place to store bounding rectangle
+ */
+void gfx_text_rect(gfx_font_t *font, gfx_coord2_t *pos,
+    gfx_text_fmt_t *fmt, const char *str, gfx_rect_t *rect)
+{
+        gfx_coord2_t spos;
+
+        gfx_text_start_pos(font, pos, fmt, str, &spos);
+
+        rect->p0.x = spos.x;
+        rect->p0.y = spos.y - font->metrics.ascent;
+        rect->p1.x = spos.x + gfx_text_width(font, str);
+        rect->p1.y = spos.y + font->metrics.descent + 1;
+}
+
 /** @}
  */