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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021, sin-ack <sin-ack@protonmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/DeprecatedString.h>
#include <AK/Forward.h>
#include <AK/Utf32View.h>
#include <AK/Utf8View.h>
#include <AK/Vector.h>
#include <LibGfx/Font/Font.h>
#include <LibGfx/Forward.h>
#include <LibGfx/Rect.h>
#include <LibGfx/TextElision.h>
#include <LibGfx/TextWrapping.h>
namespace Gfx {
// FIXME: This currently isn't an ideal way of doing things; ideally, TextLayout
// would be doing the rendering by painting individual glyphs. However, this
// would regress our Unicode bidirectional text support. Therefore, fixing this
// requires:
// - Moving the bidirectional algorithm either here, or some place TextLayout
// can access;
// - Making TextLayout render the given text into something like a Vector<Line>
// where:
// using Line = Vector<DirectionalRun>;
// struct DirectionalRun {
// Utf32View glyphs;
// Vector<int> advance;
// TextDirection direction;
// };
// - Either;
// a) Making TextLayout output these Lines directly using a given Painter, or
// b) Taking the Lines from TextLayout and painting each glyph.
class TextLayout {
public:
TextLayout(Gfx::Font const& font, Utf8View const& text, FloatRect const& rect)
: m_font(font)
, m_font_metrics(font.pixel_metrics())
, m_text(text)
, m_rect(rect)
{
}
Vector<DeprecatedString, 32> lines(TextElision elision, TextWrapping wrapping) const
{
return wrap_lines(elision, wrapping);
}
FloatRect bounding_rect(TextWrapping) const;
private:
Vector<DeprecatedString, 32> wrap_lines(TextElision, TextWrapping) const;
DeprecatedString elide_text_from_right(Utf8View) const;
Font const& m_font;
FontPixelMetrics m_font_metrics;
Utf8View m_text;
FloatRect m_rect;
};
}
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