Changeset 8fa65af0 in mainline for uspace/app/gfxdemo/gfxdemo.c

Timestamp:

2020-10-06T08:59:57Z (4 years ago)

Author:

Jiri Svoboda <jiri@…>

Branches:

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

Children:

74f59b7

Parents:

25f2983b

git-author:

Jiri Svoboda <jiri@…> (2020-10-05 18:59:36)

git-committer:

Jiri Svoboda <jiri@…> (2020-10-06 08:59:57)

Message:

Add text rendering routine and demo

File:

• uspace/app/gfxdemo/gfxdemo.c (modified) (5 diffs)

uspace/app/gfxdemo/gfxdemo.c

@@ -42 +42 @@
 #include <gfx/color.h>
 #include <gfx/render.h>
+#include <gfx/font.h>
+#include <gfx/text.h>
+#include <gfx/typeface.h>
 #include <io/console.h>
 #include <io/pixelmap.h>
@@ -366 +369 @@
         return rc;
 }
+
 /** Run bitmap color key demo on a graphic context.
  *
@@ -424 +428 @@
 }
 
-/** Run demo loop on a graphic context.
+/** Run text demo on a graphic context.
  *
  * @param gc Graphic context
@@ -430 +434 @@
  * @param h Height
  */
+static errno_t demo_text(gfx_context_t *gc, gfx_coord_t w, gfx_coord_t h)
+{
+        gfx_color_t *color = NULL;
+        gfx_rect_t rect;
+        gfx_typeface_t *tface = NULL;
+        gfx_font_info_t *finfo;
+        gfx_font_t *font = NULL;
+        gfx_coord2_t pos;
+        gfx_text_fmt_t fmt;
+        int i;
+        errno_t rc;
+
+        rc = gfx_typeface_open(gc, "/data/font/helena.tpf", &tface);
+        if (rc != EOK) {
+                printf("Error opening typeface\n");
+                goto error;
+        }
+
+        finfo = gfx_typeface_first_font(tface);
+        if (finfo == NULL) {
+                printf("Typeface contains no font.\n");
+                rc = ENOENT;
+                goto error;
+        }
+
+        rc = gfx_font_open(finfo, &font);
+        if (rc != EOK) {
+                printf("Error opening font.\n");
+                goto error;
+        }
+
+        rc = clear_scr(gc, w, h);
+        if (rc != EOK)
+                goto error;
+
+        /* Vertical bars */
+
+        for (i = 0; i < 20; i++) {
+                rc = gfx_color_new_rgb_i16(0, 0x8000 * i / 20,
+                    0x8000 * i / 20, &color);
+                if (rc != EOK)
+                        goto error;
+
+                rc = gfx_set_color(gc, color);
+                if (rc != EOK)
+                        goto error;
+
+                rect.p0.x = w * i / 20;
+                rect.p0.y = 0;
+                rect.p1.x = w * (i + 1) / 20;
+                rect.p1.y = h;
+
+                rc = gfx_fill_rect(gc, &rect);
+                if (rc != EOK)
+                        goto error;
+
+                gfx_color_delete(color);
+        }
+
+        rc = gfx_color_new_rgb_i16(0, 0, 0x8000, &color);
+        if (rc != EOK)
+                goto error;
+
+        rc = gfx_set_color(gc, color);
+        if (rc != EOK)
+                goto error;
+
+        rect.p0.x = w / 20;
+        rect.p0.y = 3 * h / 15;
+        rect.p1.x = w - w / 20;
+        rect.p1.y = 5 * h / 15;
+
+        rc = gfx_fill_rect(gc, &rect);
+        if (rc != EOK)
+                goto error;
+
+        gfx_color_delete(color);
+
+        rc = gfx_color_new_rgb_i16(0xffff, 0xffff, 0xffff, &color);
+        if (rc != EOK)
+                goto error;
+
+        rc = gfx_set_color(gc, color);
+        if (rc != EOK)
+                goto error;
+
+        gfx_text_fmt_init(&fmt);
+
+        pos.x = rect.p0.x;
+        pos.y = rect.p0.y;
+        rc = gfx_puttext(font, &pos, &fmt, "Top left");
+        if (rc != EOK) {
+                printf("Error rendering text.\n");
+                goto error;
+        }
+
+        pos.x = (rect.p0.x + rect.p1.x) / 2;
+        pos.y = rect.p0.y;
+        fmt.halign = gfx_halign_center;
+        rc = gfx_puttext(font, &pos, &fmt, "Top center");
+        if (rc != EOK)
+                goto error;
+
+        pos.x = rect.p1.x;
+        pos.y = rect.p0.y;
+        fmt.halign = gfx_halign_right;
+        rc = gfx_puttext(font, &pos, &fmt, "Top right");
+        if (rc != EOK)
+                goto error;
+
+        fmt.valign = gfx_valign_center;
+
+        pos.x = rect.p0.x;
+        pos.y = (rect.p0.y + rect.p1.y) / 2;
+        fmt.halign = gfx_halign_left;
+        rc = gfx_puttext(font, &pos, &fmt, "Center left");
+        if (rc != EOK)
+                goto error;
+
+        pos.x = (rect.p0.x + rect.p1.x) / 2;
+        pos.y = (rect.p0.y + rect.p1.y) / 2;
+        fmt.halign = gfx_halign_center;
+        rc = gfx_puttext(font, &pos, &fmt, "Center");
+        if (rc != EOK)
+                goto error;
+
+        pos.x = rect.p1.x;
+        pos.y = (rect.p0.y + rect.p1.y) / 2;
+        fmt.halign = gfx_halign_right;
+        rc = gfx_puttext(font, &pos, &fmt, "Center right");
+        if (rc != EOK)
+                goto error;
+
+        fmt.valign = gfx_valign_bottom;
+
+        pos.x = rect.p0.x;
+        pos.y = rect.p1.y;
+        fmt.halign = gfx_halign_left;
+        rc = gfx_puttext(font, &pos, &fmt, "Bottom left");
+        if (rc != EOK)
+                goto error;
+
+        pos.x = (rect.p0.x + rect.p1.x) / 2;
+        pos.y = rect.p1.y;
+        fmt.halign = gfx_halign_center;
+        rc = gfx_puttext(font, &pos, &fmt, "Bottom center");
+        if (rc != EOK)
+                goto error;
+
+        pos.x = rect.p1.x;
+        pos.y = rect.p1.y;
+        fmt.halign = gfx_halign_right;
+        rc = gfx_puttext(font, &pos, &fmt, "Bottom right");
+        if (rc != EOK)
+                goto error;
+
+        gfx_text_fmt_init(&fmt);
+
+        for (i = 0; i < 8; i++) {
+                pos.x = w / 20;
+                pos.y = (7 + i) * h / 15;
+                rc = gfx_puttext(font, &pos, &fmt, "The quick brown fox jumps over the lazy dog.");
+                if (rc != EOK)
+                        goto error;
+        }
+
+        for (i = 0; i < 10; i++) {
+                fibril_usleep(500 * 1000);
+                if (quit)
+                        break;
+        }
+
+        gfx_color_delete(color);
+
+        gfx_font_close(font);
+        gfx_typeface_destroy(tface);
+        return EOK;
+error:
+        if (font != NULL)
+                gfx_font_close(font);
+        if (tface != NULL)
+                gfx_typeface_destroy(tface);
+        return rc;
+}
+
+/** Run demo loop on a graphic context.
+ *
+ * @param gc Graphic context
+ * @param w Width
+ * @param h Height
+ */
 static errno_t demo_loop(gfx_context_t *gc, gfx_coord_t w, gfx_coord_t h)
 {
@@ -448 +643 @@
 
                 rc = demo_bitmap_kc(gc, w, h);
+                if (rc != EOK)
+                        return rc;
+
+                rc = demo_text(gc, w, h);
                 if (rc != EOK)
                         return rc;