SkPDF: fix large-number bug
Example:
https://fiddle.skia.org/c/db95a3f6c928017635c4f4ddf25f2a7b
BUG=skia:257
Review URL: https://codereview.chromium.org/1438503002
diff --git a/gm/skbug_257.cpp b/gm/skbug_257.cpp
new file mode 100644
index 0000000..0528842
--- /dev/null
+++ b/gm/skbug_257.cpp
@@ -0,0 +1,135 @@
+/*
+ * 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 "gm.h"
+#include "SkImage.h"
+#include "SkRRect.h"
+
+static void rotated_checkerboard_shader(SkPaint* paint,
+ SkColor c1,
+ SkColor c2,
+ int size) {
+ SkBitmap bm;
+ bm.allocN32Pixels(2 * size, 2 * size);
+ bm.eraseColor(c1);
+ bm.eraseArea(SkIRect::MakeLTRB(0, 0, size, size), c2);
+ bm.eraseArea(SkIRect::MakeLTRB(size, size, 2 * size, 2 * size), c2);
+ SkMatrix matrix;
+ matrix.setScale(0.75f, 0.75f);
+ matrix.preRotate(30.0f);
+ SkAutoTUnref<SkShader> shader(
+ SkShader::CreateBitmapShader(bm, SkShader::kRepeat_TileMode,
+ SkShader::kRepeat_TileMode, &matrix));
+ paint->setShader(shader);
+}
+
+static void exercise_draw_pos_text(SkCanvas* canvas,
+ const char* text,
+ SkScalar x, SkScalar y,
+ const SkPaint& paint) {
+ size_t textLen = strlen(text);
+ int count = paint.countText(text, textLen);
+ SkAutoTArray<SkScalar> widths(count);
+ paint.getTextWidths(text, textLen, &widths[0]);
+ SkAutoTArray<SkPoint> pos(count);
+ for (int i = 0; i < count; ++i) {
+ pos[i].set(x, y);
+ x += widths[i];
+ }
+ canvas->drawPosText(text, textLen, &pos[0], paint);
+}
+
+static void exercise_draw_pos_text_h(SkCanvas* canvas,
+ const char* text,
+ SkScalar x, SkScalar y,
+ const SkPaint& paint) {
+ size_t textLen = strlen(text);
+ int count = paint.countText(text, textLen);
+ SkAutoTArray<SkScalar> widths(count);
+ paint.getTextWidths(text, textLen, &widths[0]);
+ SkAutoTArray<SkScalar> pos(count);
+ for (int i = 0; i < count; ++i) {
+ pos[i] = x;
+ x += widths[i];
+ }
+ canvas->drawPosTextH(text, textLen, &pos[0], y, paint);
+}
+
+static void test_text(SkCanvas* canvas, SkScalar size,
+ SkColor color, SkScalar Y) {
+ SkPaint type;
+ type.setTextSize(24);
+ sk_tool_utils::set_portable_typeface(&type);
+ type.setColor(color);
+ const char text[] = "HELLO WORLD";
+ canvas->drawText(text, strlen(text), 32, size / 2 + Y, type);
+ SkScalar lineSpacing = type.getFontSpacing();
+ exercise_draw_pos_text(canvas, text, 32, size / 2 + Y + lineSpacing, type);
+ exercise_draw_pos_text_h(canvas, text, 32,
+ size / 2 + Y + 2 * lineSpacing, type);
+}
+
+// If this GM works correctly, the cyan layer should be lined up with
+// the objects below it.
+DEF_SIMPLE_GM(skbug_257, canvas, 512, 512) {
+ const SkScalar size = 256;
+ SkAutoCanvasRestore autoCanvasRestore0(canvas, true);
+ const SkScalar scale = 1.00168f;
+ canvas->scale(scale, scale);
+ {
+ SkPaint checker;
+ rotated_checkerboard_shader(&checker, SK_ColorWHITE, SK_ColorBLACK, 16);
+ checker.setAntiAlias(true);
+
+ SkAutoCanvasRestore autoCanvasRestore(canvas, true);
+ canvas->clear(0xFFCECFCE);
+ SkScalar translate = 225364.0f;
+ canvas->translate(0, -translate);
+
+ // Test rects
+ SkRect rect = SkRect::MakeLTRB(8, 8 + translate, size - 8,
+ size - 8 + translate);
+ canvas->drawRect(rect, checker);
+
+ // Test Paths
+ canvas->translate(size, 0);
+ SkRRect rrect;
+ SkVector radii[4] = {{40, 40}, {40, 40}, {40, 40}, {40, 40}};
+ rrect.setRectRadii(rect, radii);
+ canvas->drawRRect(rrect, checker);
+
+ // Test Points
+ canvas->translate(-size, size);
+ SkScalar delta = 1.0 / 64.0;
+ SkPoint points[8] = {{size / 2, 8 + translate},
+ {size / 2, 8 + translate + delta},
+ {8, size / 2 + translate},
+ {8, size / 2 + translate + delta},
+ {size / 2, size - 8 + translate},
+ {size / 2, size - 8 + translate + delta},
+ {size - 8, size / 2 + translate},
+ {size - 8, size / 2 + translate + delta}};
+ checker.setStyle(SkPaint::kStroke_Style);
+ checker.setStrokeWidth(8);
+ checker.setStrokeCap(SkPaint::kRound_Cap);
+ canvas->drawPoints(SkCanvas::kLines_PointMode, 8, points, checker);
+
+ // Test Text
+ canvas->translate(size, 0);
+ test_text(canvas, size, SK_ColorBLACK, translate);
+ }
+ // reference points (without the huge translations).
+ SkPaint stroke;
+ stroke.setStyle(SkPaint::kStroke_Style);
+ stroke.setStrokeWidth(5);
+ stroke.setColor(SK_ColorCYAN);
+ canvas->drawCircle(size / 2, size / 2, size / 2 - 10, stroke);
+ canvas->drawCircle(3 * size / 2, size / 2, size / 2 - 10, stroke);
+ canvas->drawCircle(size / 2, 384, size / 2 - 10, stroke);
+ canvas->translate(size, size);
+ test_text(canvas, size, SK_ColorCYAN, 0.0f);
+}