tests: Add text test replicating FlashCanvas functionality

1 files changed, 111 insertions, 0 deletions

diff --git a/src/cairo-tests/text.cpp b/src/cairo-tests/text.cpp
new file mode 100644
index 0000000..d40f0e6
--- /dev/null
+++ b/src/cairo-tests/text.cpp
@@ -0,0 +1,111 @@
+/*
+ * Copyright 2014 © Samsung Research America, Silicon Valley
+ *
+ * Use of this source code is governed by the 3-Clause BSD license
+ * specified in the COPYING file included with this source code.
+ */
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <cairo.h>
+
+#include "caskbench.h"
+#include "caskbench_context.h"
+#include "cairo-shapes.h"
+
+// This test converts a text string to glyphs and displays it at various font sizes
+
+static int max_dim;
+static char rand_text_array[19][100];
+
+static void
+gen_random(char *s, const int len) {
+    static const char alphanum[] =
+        "ABCD EFG HIJKL MNOPQ RSTUVW XYZ";
+
+    for (int i = 0; i < len; ++i) {
+        s[i] = alphanum[rand() % (sizeof(alphanum) - 1)];
+    }
+
+    s[len] = 0;
+}
+
+int
+ca_setup_text(caskbench_context_t *ctx)
+{
+    max_dim = MIN (ctx->canvas_width, ctx->canvas_height)/2;
+    return 1;
+}
+
+void
+ca_teardown_text(void)
+{
+}
+
+int
+ca_test_text(caskbench_context_t *ctx)
+{
+    cairo_t *cr = ctx->cairo_cr;
+    double font_size = 18;
+    int ypos = 15, xpos = 0;
+    int num_glyphs = 0, num_clusters = 0;
+
+    double font_factor = 0.5;
+
+    cairo_set_source_rgb (cr, 0, 0, 0);
+    cairo_rectangle (cr, 0, 0, ctx->canvas_width ,ctx->canvas_height);
+    cairo_fill (cr);
+    for (int i = 0; i < ctx->size; i++)
+    {
+        num_glyphs = 0;
+        num_clusters = 0;
+        cairo_set_font_size (cr, font_size);
+        cairoRandomizeColor (ctx);
+
+        cairo_status_t status;
+        cairo_scaled_font_t *font;
+        font = cairo_get_scaled_font (cr);
+        cairo_glyph_t *glyphs = NULL;
+        cairo_text_cluster_t *clusters = NULL;
+        cairo_text_cluster_flags_t cluster_flags;
+
+        char text[(int)font_size];
+        gen_random (text,font_size);
+
+        status = cairo_scaled_font_text_to_glyphs (font,
+                                                   xpos, ypos,
+                                                   text, font_size,
+                                                   &glyphs, &num_glyphs,
+                                                   &clusters, &num_clusters, &cluster_flags);
+
+        if (status == CAIRO_STATUS_SUCCESS) {
+            cairo_show_text_glyphs (cr,
+                                    text,font_size,
+                                    glyphs, num_glyphs,
+                                    clusters, num_clusters, cluster_flags);
+        }
+
+        font_size = font_size+font_factor;
+        ypos += (font_size/2);
+        if (font_size >= 36)
+            font_size = 36;
+        if (ypos > ctx->canvas_height/2)
+            font_factor = -0.5;
+        if (font_size < 18)
+            font_size = 18;
+    }
+    return 1;
+}
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :