Changeset bc52b5b in mainline for uspace/lib/gfx/src/color.c

Timestamp:

2021-08-15T10:02:32Z (3 years ago)

Author:

Jiri Svoboda <jiri@…>

Branches:

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

Children:

99589a9

Parents:

de0c55a

Message:

Allow the use of EGA attributes/24-bit characters alongside RGB

In a big hack (since we cannot have different pixel formats yet) we
use a pixel format that allows both 24-bit RGB (without character)
or 24-bit character with 8-bit attributes. Thus in GFX we cannot
currently have characters with any RGB color, but we can set
foreground and background individually (and it even works in EGA mode).

File:

• uspace/lib/gfx/src/color.c (modified) (3 diffs)

uspace/lib/gfx/src/color.c

@@ -1 +1 @@
 /*
- * Copyright (c) 2019 Jiri Svoboda
+ * Copyright (c) 2021 Jiri Svoboda
  * All rights reserved.
  *
@@ -69 +69 @@
 }
 
+/** Create new EGA color.
+ *
+ * @param attr EGA attributes
+ * @param rcolor Place to store pointer to new color
+ *
+ * @return EOK on success or an error code, ENOMEM if out of resources,
+ *         EIO if the graphic device connection was lost
+ */
+errno_t gfx_color_new_ega(uint8_t attr, gfx_color_t **rcolor)
+{
+        gfx_color_t *color;
+
+        color = calloc(1, sizeof(gfx_color_t));
+        if (color == NULL)
+                return ENOMEM;
+
+        color->attr = attr;
+
+        *rcolor = color;
+        return EOK;
+}
+
 /** Delete color.
  *
@@ -93 +115 @@
 }
 
+/** Convert color to EGA attributes.
+ *
+ * @param color Color
+ * @param attr Place to store EGA attributes
+ */
+void gfx_color_get_ega(gfx_color_t *color, uint8_t *attr)
+{
+        *attr = color->attr;
+}
+
 /** @}
  */