Changeset 6a87f28 in mainline for uspace/lib/gfxfont/src

Timestamp:

2021-02-25T16:48:13Z (4 years ago)

Author:

Jiri Svoboda <jiri@…>

Branches:

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

Children:

bac8acab

Parents:

26853ebc

Message:

First attempt at printing text in text-mode via GFX

Location:

uspace/lib/gfxfont/src

Files:

• font.c (modified) (2 diffs)
• text.c (modified) (4 diffs)

uspace/lib/gfxfont/src/font.c

@@ -180 +180 @@
 }
 
+/** Create dummy font for printing text in text mode.
+ *
+ * @param tface Typeface
+ * @param rfont Place to store pointer to new font
+ *
+ * @return EOK on success, EINVAL if parameters are invald,
+ *         ENOMEM if insufficient resources, EIO if graphic device connection
+ *         was lost
+ */
+errno_t gfx_font_create_textmode(gfx_typeface_t *tface, gfx_font_t **rfont)
+{
+        gfx_font_props_t props;
+        gfx_font_metrics_t metrics;
+
+        gfx_font_props_init(&props);
+        props.size = 1;
+        props.flags = gff_text_mode;
+
+        gfx_font_metrics_init(&metrics);
+        metrics.ascent = 0;
+        metrics.descent = 0;
+        metrics.leading = 1;
+
+        return gfx_font_create(tface, &props, &metrics, rfont);
+}
+
 /** Open font.
  *
@@ -229 +255 @@
 void gfx_font_get_metrics(gfx_font_t *font, gfx_font_metrics_t *metrics)
 {
-        *metrics = font->metrics;
+        if (font != NULL) {
+                *metrics = font->metrics;
+        } else {
+                metrics->ascent = 0;
+                metrics->descent = 0;
+                metrics->leading = 1;
+        }
 }
 

uspace/lib/gfxfont/src/text.c

@@ -35 +35 @@
 
 #include <errno.h>
+#include <gfx/bitmap.h>
 #include <gfx/font.h>
 #include <gfx/glyph.h>
 #include <gfx/text.h>
+#include <io/pixelmap.h>
 #include <mem.h>
+#include <str.h>
+#include "../private/font.h"
+#include "../private/typeface.h"
 
 /** Initialize text formatting structure.
@@ -66 +71 @@
         gfx_coord_t width;
         errno_t rc;
+
+        if ((font->finfo->props.flags & gff_text_mode) != 0)
+                return str_width(str);
 
         width = 0;
@@ -83 +91 @@
 
         return width;
+}
+
+/** Print string using text characters in text mode.
+ *
+ * @param font Font
+ * @param pos Position of top-left corner of text
+ * @param str String
+ * @return EOK on success or an error code
+ */
+static errno_t gfx_puttext_textmode(gfx_font_t *font, gfx_coord2_t *pos,
+    const char *str)
+{
+        gfx_context_t *gc = font->typeface->gc;
+        gfx_bitmap_params_t params;
+        gfx_bitmap_t *bitmap;
+        gfx_bitmap_alloc_t alloc;
+        pixelmap_t pmap;
+        gfx_coord_t x;
+        pixel_t pixel;
+        errno_t rc;
+
+        /*
+         * NOTE: Creating and destroying bitmap each time is not probably
+         * the most efficient way.
+         */
+
+        gfx_bitmap_params_init(&params);
+        params.rect.p0.x = 0;
+        params.rect.p0.y = 0;
+        params.rect.p1.x = str_width(str);
+        params.rect.p1.y = 1;
+
+        rc = gfx_bitmap_create(gc, &params, NULL, &bitmap);
+        if (rc != EOK)
+                return rc;
+
+        rc = gfx_bitmap_get_alloc(bitmap, &alloc);
+        if (rc != EOK) {
+                gfx_bitmap_destroy(bitmap);
+                return rc;
+        }
+
+        pmap.width = params.rect.p1.x;
+        pmap.height = 1;
+        pmap.data = alloc.pixels;
+
+        for (x = 0; x < params.rect.p1.x; x++) {
+                pixel = PIXEL(str[x], 0xff, 0xff, 0xff);
+                pixelmap_put_pixel(&pmap, x, 0, pixel);
+        }
+
+        rc = gfx_bitmap_render(bitmap, NULL, pos);
+
+        gfx_bitmap_destroy(bitmap);
+        return rc;
 }
 
@@ -141 +204 @@
         }
 
+        /* Text mode */
+        if ((font->finfo->props.flags & gff_text_mode) != 0)
+                return gfx_puttext_textmode(font, &cpos, str);
+
         cp = str;
         while (*cp != '\0') {