Changeset ff6e91b in mainline for uspace/lib/ui/src/paint.c

Timestamp:

2021-08-30T20:41:27Z (4 years ago)

Author:

Jiri Svoboda <jiri@…>

Branches:

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

Children:

81ec7e1

Parents:

9b2e20c

Message:

Make use of code page 437 characters

To draw proper text boxes, for a nice round radio button light,
for a nice contiguous slider groove.

File:

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

uspace/lib/ui/src/paint.c

@@ -38 +38 @@
 #include <gfx/context.h>
 #include <gfx/render.h>
+#include <gfx/text.h>
 #include <ui/paint.h>
+#include <stdlib.h>
+#include <str.h>
 #include "../private/resource.h"
+
+/** Single box characters */
+static ui_box_chars_t single_box_chars = {
+        {
+                { "\u250c", "\u2500", "\u2510" },
+                { "\u2502", " ",      "\u2502" },
+                { "\u2514", "\u2500", "\u2518" }
+        }
+};
+
+/** Double box characters */
+static ui_box_chars_t double_box_chars = {
+        {
+                { "\u2554", "\u2550", "\u2557" },
+                { "\u2551", " ",      "\u2551" },
+                { "\u255a", "\u2550", "\u255d" }
+        }
+};
 
 /** Paint bevel.
@@ -324 +345 @@
 }
 
+/** Paint a text box.
+ *
+ * @param resource UI resource
+ * @param rect Rectangle inside which to paint the box
+ * @param style Box style
+ * @param color Color
+ * @return EOK on success or an error code
+ */
+errno_t ui_paint_text_box(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;
+        gfx_coord_t y;
+        char *str = NULL;
+        ui_box_chars_t *boxc = NULL;
+
+        gfx_rect_points_sort(rect, &srect);
+        gfx_rect_dims(&srect, &dim);
+
+        /* Is rectangle large enough to hold box? */
+        if (dim.x < 2 || dim.y < 2)
+                return EOK;
+
+        switch (style) {
+        case ui_box_single:
+                boxc = &single_box_chars;
+                break;
+        case ui_box_double:
+                boxc = &double_box_chars;
+                break;
+        }
+
+        if (boxc == NULL)
+                return EINVAL;
+
+        gfx_text_fmt_init(&fmt);
+        fmt.color = color;
+
+        bufsz = str_size(boxc->c[0][0]) +
+            str_size(boxc->c[0][1]) * (dim.x - 2) +
+            str_size(boxc->c[0][2]) + 1;
+
+        str = malloc(bufsz);
+        if (str == NULL)
+                return ENOMEM;
+
+        /* Top edge and corners */
+
+        str_cpy(str, bufsz, boxc->c[0][0]);
+        off = str_size(boxc->c[0][0]);
+
+        for (i = 1; i < dim.x - 1; i++) {
+                str_cpy(str + off, bufsz - off, boxc->c[0][1]);
+                off += str_size(boxc->c[0][1]);
+        }
+
+        str_cpy(str + off, bufsz - off, boxc->c[0][2]);
+        off += str_size(boxc->c[0][2]);
+        str[off] = '\0';
+
+        pos = rect->p0;
+        rc = gfx_puttext(resource->font, &pos, &fmt, str);
+        if (rc != EOK)
+                goto error;
+
+        /* Vertical edges */
+        for (y = rect->p0.y + 1; y < rect->p1.y - 1; y++) {
+                pos.y = y;
+
+                pos.x = rect->p0.x;
+                rc = gfx_puttext(resource->font, &pos, &fmt,
+                    boxc->c[1][0]);
+                if (rc != EOK)
+                        goto error;
+
+                pos.x = rect->p1.x - 1;
+                rc = gfx_puttext(resource->font, &pos, &fmt,
+                    boxc->c[1][2]);
+                if (rc != EOK)
+                        goto error;
+        }
+
+        /* Bottom edge and corners */
+
+        str_cpy(str, bufsz, boxc->c[2][0]);
+        off = str_size(boxc->c[2][0]);
+
+        for (i = 1; i < dim.x - 1; i++) {
+                str_cpy(str + off, bufsz - off, boxc->c[2][1]);
+                off += str_size(boxc->c[2][1]);
+        }
+
+        str_cpy(str + off, bufsz - off, boxc->c[2][2]);
+        off += str_size(boxc->c[2][2]);
+        str[off] = '\0';
+
+        pos.x = rect->p0.x;
+        pos.y = rect->p1.y - 1;
+        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;
+}
+
 /** @}
  */