SkPDF: fall back on paths for unembeddable fonts.

gm/pdf_never_embed.cpp

+/*
+ * Copyright 2015 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "Resources.h"
+#include "SkTypeface.h"
+#include "gm.h"
+
+static void excercise_draw_pos_text(SkCanvas* canvas,
+                                    const char* text,
+                                    SkScalar x, SkScalar y,
+                                    const SkPaint& paint) {
+    size_t textLen = strlen(text);
+    SkAutoTArray<SkScalar> widths(SkToInt(textLen));
+    paint.getTextWidths(text, textLen, &widths[0]);
+    SkAutoTArray<SkPoint> pos(SkToInt(textLen));
+    for (int i = 0; i < SkToInt(textLen); ++i) {
+        pos[i].set(x, y);
+        x += widths[i];
+    }
+    canvas->drawPosText(text, textLen, &pos[0], paint);
+}
+
+DEF_SIMPLE_GM(pdf_never_embed, canvas, 512, 512) {
+    const char resource[] = "fonts/Roboto2-Regular_NoEmbed.ttf";
+    SkAutoTUnref<SkTypeface> typeface(GetResourceAsTypeface(resource));
+    if (!typeface) {
+        return;
+    }
+    SkPaint p;
+    p.setTextSize(60);
+    p.setTypeface(typeface);
+    p.setAntiAlias(true);
+
+    const char text[] = "HELLO, WORLD!";
+
+    canvas->drawColor(SK_ColorWHITE);
+    excercise_draw_pos_text(canvas, text, 30, 90, p);
+
+    canvas->save();
+    canvas->rotate(45.0f);
+    p.setColor(0xF0800000);
+    excercise_draw_pos_text(canvas, text, 30, 45, p);
+    canvas->restore();
+
+    canvas->save();
+    canvas->scale(1, 4.0);
+    p.setColor(0xF0008000);
+    excercise_draw_pos_text(canvas, text, 15, 70, p);
+    canvas->restore();
+
+    canvas->scale(1.0, 0.5);
+    p.setColor(0xF0000080);
+    canvas->drawText(text, strlen(text), 30, 700, p);
+}