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// Copyright (c) 2012 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 "ppapi/tests/test_browser_font.h"
#include <stdio.h>// ERASEME
#include "ppapi/tests/test_utils.h"
#include "ppapi/tests/testing_instance.h"
#include "ppapi/cpp/image_data.h"
#include "ppapi/cpp/trusted/browser_font_trusted.h"
REGISTER_TEST_CASE(BrowserFont);
bool TestBrowserFont::Init() {
return true;
}
void TestBrowserFont::RunTests(const std::string& filter) {
RUN_TEST(FontFamilies, filter);
RUN_TEST(Measure, filter);
RUN_TEST(CharPos, filter);
RUN_TEST(Draw, filter);
}
// Just tests that GetFontFamilies is hooked up & returns something.
std::string TestBrowserFont::TestFontFamilies() {
// This function is only supported out-of-process.
const PPB_Testing_Dev* testing_interface = GetTestingInterface();
if (testing_interface && !testing_interface->IsOutOfProcess())
PASS();
pp::Var families = pp::BrowserFont_Trusted::GetFontFamilies(instance_);
ASSERT_TRUE(families.is_string());
ASSERT_TRUE(!families.AsString().empty());
PASS();
}
// Tests that measuring text behaves reasonably. We aren't sure if the browser
// will be doing kerning or something for the particular default font, so we
// just make a string that we're pretty sure should be more than twice as long
// as another one, and verify that condition.
std::string TestBrowserFont::TestMeasure() {
pp::BrowserFontDescription desc;
pp::BrowserFont_Trusted font(instance_, desc);
int32_t length1 = font.MeasureText(pp::BrowserFontTextRun("WWW"));
ASSERT_TRUE(length1 > 0);
int32_t length2 = font.MeasureText(pp::BrowserFontTextRun("WWWWWWWW"));
ASSERT_TRUE(length2 >= length1 * 2);
PASS();
}
// Tests that the character/pixel offset functions correctly round-trip.
std::string TestBrowserFont::TestCharPos() {
pp::BrowserFontDescription desc;
pp::BrowserFont_Trusted font(instance_, desc);
pp::BrowserFontTextRun run("Hello, world");
uint32_t original_char = 3;
uint32_t pixel_offset = font.PixelOffsetForCharacter(run, original_char);
ASSERT_TRUE(pixel_offset > 0);
uint32_t computed_char = font.CharacterOffsetForPixel(
run, static_cast<int32_t>(pixel_offset));
ASSERT_TRUE(computed_char == original_char);
PASS();
}
// Tests that drawing some text produces "some" output.
std::string TestBrowserFont::TestDraw() {
pp::BrowserFontDescription desc;
desc.set_size(100);
pp::BrowserFont_Trusted font(instance_, desc);
const int kSize = 256;
pp::ImageData image(instance_, pp::ImageData::GetNativeImageDataFormat(),
pp::Size(kSize, kSize), true);
ASSERT_TRUE(!image.is_null());
const uint32_t kColor = 0xFFFFFFFF;
font.DrawSimpleText(&image, "Hello", pp::Point(0, 0), kColor, false);
// Expect that some pixel is nonzero. Due to blending, there may be rounding
// errors and checking for exact white may not be correct.
bool found = false;
for (int y = 0; y < kSize; y++) {
for (int x = 0; x < kSize; x++) {
if (*image.GetAddr32(pp::Point(x, y)) != 0) {
found = true;
break;
}
}
}
ASSERT_TRUE(found);
PASS();
}
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