Magic_Game/src/kiwano/2d/TextActor.cpp

// Copyright (c) 2016-2018 Kiwano - Nomango
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

#include <kiwano/2d/TextActor.h>
#include <kiwano/core/Logger.h>
#include <kiwano/render/Renderer.h>

namespace kiwano
{
namespace
{
TextStyle text_default_style;

void InitDefaultTextStyle()
{
    static bool inited = false;
    if (!inited)
    {
        inited = true;

        // Ĭ<><C4AC>ʹ<EFBFBD>ð<EFBFBD>ɫ<EFBFBD><C9AB>ˢ<EFBFBD><CBA2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
        text_default_style.fill_brush = new Brush;
        text_default_style.fill_brush->SetColor(Color::White);
    }
}
}  // namespace

void TextActor::SetDefaultStyle(TextStyle const& style)
{
    text_default_style = style;
}

const TextStyle& TextActor::GetDefaultStyle()
{
    InitDefaultTextStyle();
    return text_default_style;
}

TextActor::TextActor()
    : TextActor(String())
{
}

TextActor::TextActor(String const& text)
    : TextActor(text, GetDefaultStyle())
{
}

TextActor::TextActor(String const& text, const TextStyle& style)
    : show_underline_(false)
    , show_strikethrough_(false)
{
    SetText(text);
    SetStyle(style);
}

TextActor::~TextActor() {}

void TextActor::OnRender(RenderContext& ctx)
{
    ctx.DrawTextLayout(text_layout_);
}

void TextActor::OnUpdate(Duration dt)
{
    UpdateLayout();
}

void TextActor::UpdateLayout()
{
    if (text_layout_.IsDirty())
    {
        text_layout_.Update();
    }

    if (text_layout_.GetDirtyFlag() & TextLayout::DirtyFlag::Updated)
    {
        text_layout_.SetDirtyFlag(TextLayout::DirtyFlag::Clean);

        if (show_underline_)
            text_layout_.SetUnderline(true, 0, text_layout_.GetText().length());

        if (show_strikethrough_)
            text_layout_.SetStrikethrough(true, 0, text_layout_.GetText().length());

        SetSize(text_layout_.GetLayoutSize());
    }
}

bool TextActor::CheckVisibility(RenderContext& ctx) const
{
    return text_layout_.IsValid() && Actor::CheckVisibility(ctx);
}

void TextActor::SetFillColor(Color const& color)
{
    if (!text_layout_.GetFillBrush() || text_layout_.GetFillBrush() == GetDefaultStyle().fill_brush)
    {
        BrushPtr brush = new Brush;
        text_layout_.SetFillBrush(brush);
    }
    text_layout_.GetFillBrush()->SetColor(color);
}

void TextActor::SetOutlineColor(Color const& outline_color)
{
    if (!text_layout_.GetOutlineBrush() || text_layout_.GetOutlineBrush() == GetDefaultStyle().outline_brush)
    {
        BrushPtr brush = new Brush;
        text_layout_.SetOutlineBrush(brush);
    }
    text_layout_.GetOutlineBrush()->SetColor(outline_color);
}

}  // namespace kiwano