Issue#8 - Add a new test for text rendering.

Signed-off-by: Bryce Harrington <b.harrington@samsung.com>

1 files changed, 97 insertions, 15 deletions

diff --git a/src/cairo-tests/text.cpp b/src/cairo-tests/text.cpp
index 1ebe7d2..69480df 100644
--- a/src/cairo-tests/text.cpp
+++ b/src/cairo-tests/text.cpp
@@ -1,15 +1,30 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <cairo.h>
-
+#include <unistd.h>
 #include "caskbench.h"
 
 static int max_dim;
 
+static char rand_text_array[19][100];
+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;
+    max_dim = MIN (ctx->canvas_width, ctx->canvas_height)/2;
+	for(int i = 0;i<19;i++)
+	{
+		gen_random (rand_text_array[i],i+18);
+	}
     return 1;
 }
 
@@ -18,24 +33,91 @@ ca_teardown_text(void)
 {
 }
 
+
 int
 ca_test_text(caskbench_context_t *ctx)
 {
-    int i, x, y, r;
+
     cairo_t *cr = ctx->cairo_cr;
-    cairo_set_font_size (cr, 40);
 
-    for (i=0; i<ctx->size; i++) {
-        cairo_text_extents_t extents;
-        cairo_font_options_t *font_options;
-        float offsetY,offsetX;
-        int align;
-        unsigned int flags;
+    for (int i = 0; i < ctx->size; i++)
+    {
+        double font_size = 18;
+        int ypos = 0, xpos = 0;
 
-	randomize_color(cr);
-        cairo_move_to (cr,  150, 50);
-        cairo_show_text (cr, "TextRendering");
-    }
+        cairo_set_source_rgb (cr, 0, 0, 0);
+        cairo_rectangle (cr, 0, 0, ctx->canvas_width ,ctx->canvas_height);
+        cairo_fill (cr);
 
-    return 1;
+
+        for(font_size = 18; font_size <= 36; font_size++) 
+		{
+	    	cairo_set_font_size (cr, font_size);
+	    	randomize_color (cr);
+
+			cairo_status_t status;
+			cairo_scaled_font_t *font;
+			font = cairo_get_scaled_font (cr);
+			cairo_glyph_t *glyphs = NULL;
+			int num_glyphs;
+			cairo_text_cluster_t *clusters = NULL;
+			int num_clusters;
+			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,
+		    	             rand_text_array[(int)font_size-18],font_size,
+        	                 glyphs, num_glyphs,
+                             clusters, num_clusters, cluster_flags);
+			}
+			 ypos += (font_size/2);
+		}
+
+	    for(font_size = 36; font_size >= 18; font_size--)
+    	{
+
+        	cairo_set_font_size (cr, font_size);
+
+	        randomize_color (cr);
+
+    	    cairo_status_t status;
+    	    cairo_scaled_font_t *font;
+	        font = cairo_get_scaled_font (cr);
+	        cairo_glyph_t *glyphs = NULL;
+        	int num_glyphs;
+	        cairo_text_cluster_t *clusters = NULL;
+	        int num_clusters;
+	        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,
+                             rand_text_array[(int)font_size-18],font_size,
+                             glyphs, num_glyphs,
+                             clusters, num_clusters, cluster_flags);
+        	}
+         	ypos += (font_size/2);
+   		}
+
+	}	
+
+	return 1;
 }