Issue #130. Add cairo text case similar to skia & Minor corrections to skia text case.

1 files changed, 23 insertions, 58 deletions

diff --git a/src/cairo-tests/text.cpp b/src/cairo-tests/text.cpp
index d40f0e6..bf3028d 100644
--- a/src/cairo-tests/text.cpp
+++ b/src/cairo-tests/text.cpp
@@ -8,34 +8,25 @@
 
 #include <stdio.h>
 #include <stdlib.h>
-#include <unistd.h>
 #include <cairo.h>
+#include <string.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;
-}
+// This tests basic (non-glyph) text functionality
 
 int
 ca_setup_text(caskbench_context_t *ctx)
 {
-    max_dim = MIN (ctx->canvas_width, ctx->canvas_height)/2;
+    cairo_t *cr = ctx->cairo_cr;
+    cairo_select_font_face(cr, "Serif",
+                           CAIRO_FONT_SLANT_NORMAL,
+                           CAIRO_FONT_WEIGHT_BOLD);
+
+    cairo_set_font_size(cr, 20);
+    cairo_set_antialias(cr,CAIRO_ANTIALIAS_NONE);
     return 1;
 }
 
@@ -47,54 +38,28 @@ ca_teardown_text(void)
 int
 ca_test_text(caskbench_context_t *ctx)
 {
+    char text[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
     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;
+    size_t byteLength = strlen(text) * sizeof(char);
+    cairo_text_extents_t  text_metrics;
+    cairo_text_extents (cr, text, &text_metrics);
+    double tw = text_metrics.width + 3; // Adding 3 to make tw value same as skia text.
+    double w = (double) ctx->canvas_width;
+    double h = (double) ctx->canvas_height;
+    double off = abs (w - tw);
 
     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);
-        }
+        double x = drand48() * off;
+        double y = drand48() * h;
 
-        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;
+        cairoRandomizeColor(ctx);
+        cairo_move_to(cr, x, y);
+        cairo_show_text(cr, text);
     }
     return 1;
 }