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// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/gfx/paint_vector_icon.h"
#include <gtest/gtest.h>
#include <vector>
#include "base/i18n/rtl.h"
#include "cc/paint/paint_record.h"
#include "cc/paint/paint_recorder.h"
#include "third_party/skia/include/core/SkCanvas.h"
#include "third_party/skia/include/core/SkPath.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/vector_icon_types.h"
namespace gfx {
namespace {
SkColor GetColorAtTopLeft(const Canvas& canvas) {
return canvas.GetBitmap().getColor(0, 0);
}
class MockCanvas : public SkCanvas {
public:
MockCanvas(int width, int height) : SkCanvas(width, height) {}
// SkCanvas overrides:
void onDrawPath(const SkPath& path, const SkPaint& paint) override {
paths_.push_back(path);
}
const std::vector<SkPath>& paths() const { return paths_; }
private:
std::vector<SkPath> paths_;
DISALLOW_COPY_AND_ASSIGN(MockCanvas);
};
// Tests that a relative move to command (R_MOVE_TO) after a close command
// (CLOSE) uses the correct starting point. See crbug.com/697497
TEST(VectorIconTest, RelativeMoveToAfterClose) {
cc::PaintRecorder recorder;
Canvas canvas(recorder.beginRecording(100, 100), 1.0f);
const PathElement elements[] = {
MOVE_TO, 4, 5, LINE_TO, 10, 11, CLOSE,
// This move should use (4, 5) as the start point rather than (10, 11).
R_MOVE_TO, 20, 21, R_LINE_TO, 50, 51};
const VectorIconRep rep_list[] = {{elements, arraysize(elements)}};
const VectorIcon icon = {rep_list, 1u};
PaintVectorIcon(&canvas, icon, 100, SK_ColorMAGENTA);
sk_sp<cc::PaintRecord> record = recorder.finishRecordingAsPicture();
MockCanvas mock(100, 100);
record->Playback(&mock);
ASSERT_EQ(1U, mock.paths().size());
SkPoint last_point;
EXPECT_TRUE(mock.paths()[0].getLastPt(&last_point));
EXPECT_EQ(SkIntToScalar(74), last_point.x());
EXPECT_EQ(SkIntToScalar(77), last_point.y());
}
TEST(VectorIconTest, FlipsInRtl) {
// Set the locale to a rtl language otherwise FLIPS_IN_RTL will do nothing.
base::i18n::SetICUDefaultLocale("he");
ASSERT_TRUE(base::i18n::IsRTL());
const int canvas_size = 20;
const SkColor color = SK_ColorWHITE;
Canvas canvas(gfx::Size(canvas_size, canvas_size), 1.0f, true);
// Create a 20x20 square icon which has FLIPS_IN_RTL, and CANVAS_DIMENSIONS
// are twice as large as |canvas|.
const PathElement elements[] = {CANVAS_DIMENSIONS,
2 * canvas_size,
FLIPS_IN_RTL,
MOVE_TO,
10,
10,
R_H_LINE_TO,
20,
R_V_LINE_TO,
20,
R_H_LINE_TO,
-20,
CLOSE};
const VectorIconRep rep_list[] = {{elements, arraysize(elements)}};
const VectorIcon icon = {rep_list, 1u};
PaintVectorIcon(&canvas, icon, canvas_size, color);
// Count the number of pixels in the canvas.
auto bitmap = canvas.GetBitmap();
int colored_pixel_count = 0;
for (int i = 0; i < bitmap.width(); ++i) {
for (int j = 0; j < bitmap.height(); ++j) {
if (bitmap.getColor(i, j) == color)
colored_pixel_count++;
}
}
// Verify that the amount of colored pixels on the canvas bitmap should be a
// quarter of the original icon, since each side should be scaled down by a
// factor of two.
EXPECT_EQ(100, colored_pixel_count);
}
TEST(VectorIconTest, CorrectSizePainted) {
// Create a set of 5 icons reps, sized {48, 32, 24, 20, 16} for the test icon.
// Color each of them differently so they can be differentiated (the parts of
// an icon painted with PATH_COLOR_ARGB will not be overwritten by the color
// provided to it at creation time).
// SK_ColorRED.
const PathElement elements48[] = {CANVAS_DIMENSIONS,
48,
PATH_COLOR_ARGB,
0xFF,
0xFF,
0x00,
0x00,
MOVE_TO,
0,
0,
H_LINE_TO,
48,
V_LINE_TO,
48,
H_LINE_TO,
0,
V_LINE_TO,
0,
CLOSE};
// SK_ColorGREEN.
const PathElement elements32[] = {CANVAS_DIMENSIONS,
32,
PATH_COLOR_ARGB,
0xFF,
0x00,
0xFF,
0x00,
MOVE_TO,
0,
0,
H_LINE_TO,
32,
V_LINE_TO,
32,
H_LINE_TO,
0,
V_LINE_TO,
0,
CLOSE};
// SK_ColorBLUE.
const PathElement elements24[] = {CANVAS_DIMENSIONS,
24,
PATH_COLOR_ARGB,
0xFF,
0x00,
0x00,
0xFF,
MOVE_TO,
0,
0,
H_LINE_TO,
24,
V_LINE_TO,
24,
H_LINE_TO,
0,
V_LINE_TO,
0,
CLOSE};
// SK_ColorYELLOW.
const PathElement elements20[] = {CANVAS_DIMENSIONS,
20,
PATH_COLOR_ARGB,
0xFF,
0xFF,
0xFF,
0x00,
MOVE_TO,
0,
0,
H_LINE_TO,
20,
V_LINE_TO,
20,
H_LINE_TO,
0,
V_LINE_TO,
0,
CLOSE};
// SK_ColorCYAN.
const PathElement elements16[] = {CANVAS_DIMENSIONS,
16,
PATH_COLOR_ARGB,
0xFF,
0x00,
0xFF,
0xFF,
MOVE_TO,
0,
0,
H_LINE_TO,
16,
V_LINE_TO,
16,
H_LINE_TO,
0,
V_LINE_TO,
0,
CLOSE};
// VectorIconReps are always sorted in descending order of size.
const VectorIconRep rep_list[] = {{elements48, arraysize(elements48)},
{elements32, arraysize(elements32)},
{elements24, arraysize(elements24)},
{elements20, arraysize(elements20)},
{elements16, arraysize(elements16)}};
const VectorIcon icon = {rep_list, 5u};
// Test exact sizes paint the correctly sized icon, including the largest and
// smallest icon.
Canvas canvas_100(gfx::Size(100, 100), 1.0, true);
PaintVectorIcon(&canvas_100, icon, 48, SK_ColorBLACK);
EXPECT_EQ(SK_ColorRED, GetColorAtTopLeft(canvas_100));
PaintVectorIcon(&canvas_100, icon, 32, SK_ColorBLACK);
EXPECT_EQ(SK_ColorGREEN, GetColorAtTopLeft(canvas_100));
PaintVectorIcon(&canvas_100, icon, 16, SK_ColorBLACK);
EXPECT_EQ(SK_ColorCYAN, GetColorAtTopLeft(canvas_100));
// Only the largest icon may be upscaled to a size larger than what it was
// designed for.
PaintVectorIcon(&canvas_100, icon, 50, SK_ColorBLACK);
EXPECT_EQ(SK_ColorRED, GetColorAtTopLeft(canvas_100));
// All other icons may never be upscaled.
PaintVectorIcon(&canvas_100, icon, 27, SK_ColorBLACK);
EXPECT_EQ(SK_ColorGREEN, GetColorAtTopLeft(canvas_100));
PaintVectorIcon(&canvas_100, icon, 8, SK_ColorBLACK);
EXPECT_EQ(SK_ColorCYAN, GetColorAtTopLeft(canvas_100));
// Test icons at a scale factor < 100%, still with an exact size, paint the
// correctly sized icon.
Canvas canvas_75(gfx::Size(100, 100), 0.75, true);
PaintVectorIcon(&canvas_75, icon, 32, SK_ColorBLACK); // 32 * 0.75 = 24.
EXPECT_EQ(SK_ColorBLUE, GetColorAtTopLeft(canvas_75));
// Test icons at a scale factor > 100%, still with an exact size, paint the
// correctly sized icon.
Canvas canvas_125(gfx::Size(100, 100), 1.25, true);
PaintVectorIcon(&canvas_125, icon, 16, SK_ColorBLACK); // 16 * 1.25 = 20.
EXPECT_EQ(SK_ColorYELLOW, GetColorAtTopLeft(canvas_125));
// Inexact sizes at scale factors < 100%.
PaintVectorIcon(&canvas_75, icon, 12, SK_ColorBLACK); // 12 * 0.75 = 9.
EXPECT_EQ(SK_ColorCYAN, GetColorAtTopLeft(canvas_75));
PaintVectorIcon(&canvas_75, icon, 28, SK_ColorBLACK); // 28 * 0.75 = 21.
EXPECT_EQ(SK_ColorBLUE, GetColorAtTopLeft(canvas_75));
// Inexact sizes at scale factors > 100%.
PaintVectorIcon(&canvas_125, icon, 12, SK_ColorBLACK); // 12 * 1.25 = 15.
EXPECT_EQ(SK_ColorCYAN, GetColorAtTopLeft(canvas_125));
PaintVectorIcon(&canvas_125, icon, 28, SK_ColorBLACK); // 28 * 1.25 = 35.
EXPECT_EQ(SK_ColorRED, GetColorAtTopLeft(canvas_125));
// Painting without a requested size will default to the smallest icon rep.
PaintVectorIcon(&canvas_100, icon, SK_ColorBLACK);
EXPECT_EQ(SK_ColorCYAN, GetColorAtTopLeft(canvas_100));
// But doing this in another scale factor should assume the smallest icon rep
// size, then scale it up by the DSF.
PaintVectorIcon(&canvas_125, icon, SK_ColorBLACK); // 16 * 1.25 = 20.
EXPECT_EQ(SK_ColorYELLOW, GetColorAtTopLeft(canvas_125));
}
} // namespace
} // namespace gfx
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