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// Copyright (c) 2011 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/render_text.h"
#include "base/memory/scoped_ptr.h"
#include "base/utf_string_conversions.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace gfx {
class RenderTextTest : public testing::Test {
};
TEST_F(RenderTextTest, DefaultStyle) {
// Defaults to empty text with no styles.
scoped_ptr<gfx::RenderText> render_text(gfx::RenderText::CreateRenderText());
EXPECT_TRUE(render_text->text().empty());
EXPECT_TRUE(render_text->style_ranges().empty());
// Test that the built-in default style is applied for new text.
render_text->SetText(ASCIIToUTF16("abc"));
EXPECT_EQ(1U, render_text->style_ranges().size());
gfx::StyleRange style;
EXPECT_EQ(style.font.GetFontName(),
render_text->style_ranges()[0].font.GetFontName());
EXPECT_EQ(style.foreground, render_text->style_ranges()[0].foreground);
EXPECT_EQ(ui::Range(0, 3), render_text->style_ranges()[0].range);
EXPECT_EQ(style.strike, render_text->style_ranges()[0].strike);
EXPECT_EQ(style.underline, render_text->style_ranges()[0].underline);
// Test that clearing the text also clears the styles.
render_text->SetText(string16());
EXPECT_TRUE(render_text->text().empty());
EXPECT_TRUE(render_text->style_ranges().empty());
}
TEST_F(RenderTextTest, CustomDefaultStyle) {
// Test a custom default style.
scoped_ptr<gfx::RenderText> render_text(gfx::RenderText::CreateRenderText());
gfx::StyleRange color;
color.foreground = SK_ColorRED;
render_text->set_default_style(color);
render_text->SetText(ASCIIToUTF16("abc"));
EXPECT_EQ(1U, render_text->style_ranges().size());
EXPECT_EQ(color.foreground, render_text->style_ranges()[0].foreground);
// Test that the custom default style persists across clearing text.
render_text->SetText(string16());
EXPECT_TRUE(render_text->style_ranges().empty());
render_text->SetText(ASCIIToUTF16("abc"));
EXPECT_EQ(1U, render_text->style_ranges().size());
EXPECT_EQ(color.foreground, render_text->style_ranges()[0].foreground);
// Test ApplyDefaultStyle after setting a new default.
gfx::StyleRange strike;
strike.strike = true;
render_text->set_default_style(strike);
render_text->ApplyDefaultStyle();
EXPECT_EQ(1U, render_text->style_ranges().size());
EXPECT_EQ(true, render_text->style_ranges()[0].strike);
EXPECT_EQ(strike.foreground, render_text->style_ranges()[0].foreground);
}
TEST_F(RenderTextTest, ApplyStyleRange) {
scoped_ptr<gfx::RenderText> render_text(gfx::RenderText::CreateRenderText());
render_text->SetText(ASCIIToUTF16("01234"));
EXPECT_EQ(1U, render_text->style_ranges().size());
// Test ApplyStyleRange (no-op on empty range).
gfx::StyleRange empty;
empty.range = ui::Range(1, 1);
render_text->ApplyStyleRange(empty);
EXPECT_EQ(1U, render_text->style_ranges().size());
// Test ApplyStyleRange (no-op on invalid range).
gfx::StyleRange invalid;
invalid.range = ui::Range::InvalidRange();
render_text->ApplyStyleRange(invalid);
EXPECT_EQ(1U, render_text->style_ranges().size());
// Apply a style with a range contained by an existing range.
gfx::StyleRange underline;
underline.underline = true;
underline.range = ui::Range(2, 3);
render_text->ApplyStyleRange(underline);
EXPECT_EQ(3U, render_text->style_ranges().size());
EXPECT_EQ(ui::Range(0, 2), render_text->style_ranges()[0].range);
EXPECT_FALSE(render_text->style_ranges()[0].underline);
EXPECT_EQ(ui::Range(2, 3), render_text->style_ranges()[1].range);
EXPECT_TRUE(render_text->style_ranges()[1].underline);
EXPECT_EQ(ui::Range(3, 5), render_text->style_ranges()[2].range);
EXPECT_FALSE(render_text->style_ranges()[2].underline);
// Apply a style with a range equal to another range.
gfx::StyleRange color;
color.foreground = SK_ColorWHITE;
color.range = ui::Range(2, 3);
render_text->ApplyStyleRange(color);
EXPECT_EQ(3U, render_text->style_ranges().size());
EXPECT_EQ(ui::Range(0, 2), render_text->style_ranges()[0].range);
EXPECT_NE(SK_ColorWHITE, render_text->style_ranges()[0].foreground);
EXPECT_FALSE(render_text->style_ranges()[0].underline);
EXPECT_EQ(ui::Range(2, 3), render_text->style_ranges()[1].range);
EXPECT_EQ(SK_ColorWHITE, render_text->style_ranges()[1].foreground);
EXPECT_FALSE(render_text->style_ranges()[1].underline);
EXPECT_EQ(ui::Range(3, 5), render_text->style_ranges()[2].range);
EXPECT_NE(SK_ColorWHITE, render_text->style_ranges()[2].foreground);
EXPECT_FALSE(render_text->style_ranges()[2].underline);
// Apply a style with a range containing an existing range.
// This new style also overlaps portions of neighboring ranges.
gfx::StyleRange strike;
strike.strike = true;
strike.range = ui::Range(1, 4);
render_text->ApplyStyleRange(strike);
EXPECT_EQ(3U, render_text->style_ranges().size());
EXPECT_EQ(ui::Range(0, 1), render_text->style_ranges()[0].range);
EXPECT_FALSE(render_text->style_ranges()[0].strike);
EXPECT_EQ(ui::Range(1, 4), render_text->style_ranges()[1].range);
EXPECT_TRUE(render_text->style_ranges()[1].strike);
EXPECT_EQ(ui::Range(4, 5), render_text->style_ranges()[2].range);
EXPECT_FALSE(render_text->style_ranges()[2].strike);
// Apply a style overlapping all ranges.
gfx::StyleRange strike_underline;
strike_underline.strike = true;
strike_underline.underline = true;
strike_underline.range = ui::Range(0, render_text->text().length());
render_text->ApplyStyleRange(strike_underline);
EXPECT_EQ(1U, render_text->style_ranges().size());
EXPECT_EQ(ui::Range(0, 5), render_text->style_ranges()[0].range);
EXPECT_TRUE(render_text->style_ranges()[0].underline);
EXPECT_TRUE(render_text->style_ranges()[0].strike);
// Apply the default style.
render_text->ApplyDefaultStyle();
EXPECT_EQ(1U, render_text->style_ranges().size());
EXPECT_EQ(ui::Range(0, 5), render_text->style_ranges()[0].range);
EXPECT_FALSE(render_text->style_ranges()[0].underline);
EXPECT_FALSE(render_text->style_ranges()[0].strike);
}
TEST_F(RenderTextTest, StyleRangesAdjust) {
// Test that style ranges adjust to the text size.
scoped_ptr<gfx::RenderText> render_text(gfx::RenderText::CreateRenderText());
render_text->SetText(ASCIIToUTF16("abcdef"));
EXPECT_EQ(1U, render_text->style_ranges().size());
EXPECT_EQ(ui::Range(0, 6), render_text->style_ranges()[0].range);
// Test that the range is clipped to the length of shorter text.
render_text->SetText(ASCIIToUTF16("abc"));
EXPECT_EQ(1U, render_text->style_ranges().size());
EXPECT_EQ(ui::Range(0, 3), render_text->style_ranges()[0].range);
// Test that the last range extends to the length of longer text.
gfx::StyleRange strike;
strike.strike = true;
strike.range = ui::Range(2, 3);
render_text->ApplyStyleRange(strike);
render_text->SetText(ASCIIToUTF16("abcdefghi"));
EXPECT_EQ(2U, render_text->style_ranges().size());
EXPECT_EQ(ui::Range(0, 2), render_text->style_ranges()[0].range);
EXPECT_EQ(ui::Range(2, 9), render_text->style_ranges()[1].range);
EXPECT_TRUE(render_text->style_ranges()[1].strike);
// Test that ranges are removed if they're outside the range of shorter text.
render_text->SetText(ASCIIToUTF16("ab"));
EXPECT_EQ(1U, render_text->style_ranges().size());
EXPECT_EQ(ui::Range(0, 2), render_text->style_ranges()[0].range);
EXPECT_FALSE(render_text->style_ranges()[0].strike);
// Test that previously removed ranges don't return.
render_text->SetText(ASCIIToUTF16("abcdef"));
EXPECT_EQ(1U, render_text->style_ranges().size());
EXPECT_EQ(ui::Range(0, 6), render_text->style_ranges()[0].range);
EXPECT_FALSE(render_text->style_ranges()[0].strike);
}
} // namespace gfx
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