457 lines
8.5 KiB
C++
457 lines
8.5 KiB
C++
// Copyright (c) 2016-2018 Easy2D - Nomango
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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#include "Text.h"
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#include "render.h"
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#include "base.h"
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namespace easy2d
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{
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//-------------------------------------------------------
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// Style
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//-------------------------------------------------------
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Text::Style::Style()
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: color(Color::White)
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, alignment(Align::Left)
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, wrap(false)
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, wrap_width(0.f)
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, line_spacing(0.f)
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, underline(false)
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, strikethrough(false)
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, outline(true)
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, outline_color(Color(Color::Black, 0.5))
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, outline_width(1.f)
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, outline_stroke(StrokeStyle::Round)
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{}
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Text::Style::Style(
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Color color,
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Align alignment,
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bool wrap,
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float wrap_width,
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float line_spacing,
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bool underline,
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bool strikethrough,
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bool outline,
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Color outline_color,
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float outline_width,
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StrokeStyle outline_stroke
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)
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: color(color)
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, alignment(alignment)
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, wrap(wrap)
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, wrap_width(wrap_width)
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, line_spacing(line_spacing)
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, underline(underline)
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, strikethrough(strikethrough)
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, outline(outline)
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, outline_color(outline_color)
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, outline_width(outline_width)
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, outline_stroke(outline_stroke)
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{}
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//-------------------------------------------------------
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// Text
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//-------------------------------------------------------
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Text::Text()
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: font_()
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, style_()
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, text_layout_(nullptr)
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, text_format_(nullptr)
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{
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}
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Text::Text(const String & text, const Font & font, const Style & style)
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: font_(font)
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, style_(style)
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, text_layout_(nullptr)
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, text_format_(nullptr)
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, text_(text)
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{
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Reset();
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}
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Text::~Text()
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{
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SafeRelease(text_format_);
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SafeRelease(text_layout_);
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}
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const String& Text::GetText() const
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{
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return text_;
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}
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const Font& Text::GetFont() const
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{
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return font_;
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}
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const Text::Style& Text::GetStyle() const
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{
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return style_;
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}
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const String& Text::GetFontFamily() const
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{
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return font_.family;
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}
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float Text::GetFontSize() const
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{
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return font_.size;
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}
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UINT Text::GetFontWeight() const
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{
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return font_.weight;
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}
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const Color& Text::GetColor() const
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{
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return style_.color;
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}
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const Color& Text::GetOutlineColor() const
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{
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return style_.outline_color;
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}
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float Text::GetOutlineWidth() const
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{
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return style_.outline_width;
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}
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StrokeStyle Text::GetOutlineStroke() const
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{
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return style_.outline_stroke;
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}
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int Text::GetLineCount() const
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{
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if (text_layout_)
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{
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DWRITE_TEXT_METRICS metrics;
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text_layout_->GetMetrics(&metrics);
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return static_cast<int>(metrics.lineCount);
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}
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else
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{
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return 0;
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}
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}
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bool Text::IsItalic() const
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{
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return font_.italic;
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}
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bool Text::strikethrough() const
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{
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return style_.strikethrough;
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}
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bool Text::underline() const
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{
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return style_.underline;
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}
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bool Text::outline() const
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{
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return style_.outline;
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}
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void Text::SetText(const String& text)
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{
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text_ = text;
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Reset();
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}
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void Text::SetStyle(const Style& style)
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{
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style_ = style;
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Reset();
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}
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void Text::SetFont(const Font & font)
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{
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font_ = font;
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Reset();
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}
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void Text::SetFontFamily(const String& family)
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{
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font_.family = family;
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Reset();
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}
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void Text::SetFontSize(float size)
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{
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font_.size = size;
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Reset();
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}
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void Text::SetFontWeight(UINT weight)
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{
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font_.weight = weight;
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Reset();
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}
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void Text::SetColor(Color color)
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{
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style_.color = color;
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}
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void Text::SetItalic(bool val)
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{
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font_.italic = val;
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Reset();
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}
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void Text::SetWrapEnabled(bool wrap)
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{
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if (style_.wrap != wrap)
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{
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style_.wrap = wrap;
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Reset();
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}
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}
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void Text::SetWrapWidth(float wrap_width)
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{
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if (style_.wrap_width != wrap_width)
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{
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style_.wrap_width = std::max(wrap_width, 0.f);
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if (style_.wrap)
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{
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Reset();
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}
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}
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}
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void Text::SetLineSpacing(float line_spacing)
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{
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if (style_.line_spacing != line_spacing)
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{
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style_.line_spacing = line_spacing;
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Reset();
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}
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}
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void Text::SetAlignment(Align align)
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{
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if (style_.alignment != align)
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{
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style_.alignment = align;
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Reset();
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}
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}
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void Text::SetUnderline(bool underline)
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{
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if (style_.underline != underline)
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{
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style_.underline = underline;
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if (!text_format_)
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CreateFormat();
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CreateLayout();
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}
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}
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void Text::SetStrikethrough(bool strikethrough)
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{
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if (style_.strikethrough != strikethrough)
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{
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style_.strikethrough = strikethrough;
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if (!text_format_)
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CreateFormat();
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CreateLayout();
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}
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}
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void Text::SetOutline(bool outline)
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{
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style_.outline = outline;
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}
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void Text::SetOutlineColor(Color outline_color)
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{
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style_.outline_color = outline_color;
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}
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void Text::SetOutlineWidth(float outline_width)
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{
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style_.outline_width = outline_width;
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}
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void Text::SetOutlineStroke(StrokeStyle outline_stroke)
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{
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style_.outline_stroke = outline_stroke;
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}
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void Text::OnDraw() const
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{
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if (text_layout_)
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{
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// <20><><EFBFBD><EFBFBD><EFBFBD>ı<EFBFBD><C4B1><EFBFBD><EFBFBD><EFBFBD>
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D2D1_RECT_F textLayoutRect = D2D1::RectF(0, 0, GetTransform().size.width, GetTransform().size.height);
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// <20><><EFBFBD>û<EFBFBD>ˢ<EFBFBD><CBA2>ɫ<EFBFBD><C9AB><EFBFBD><CDB8><EFBFBD><EFBFBD>
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devices::Graphics::Instance().SetBrushOpacity(GetDisplayOpacity());
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// <20><>ȡ<EFBFBD>ı<EFBFBD><C4B1><EFBFBD>Ⱦ<EFBFBD><C8BE>
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devices::Graphics::Instance().SetTextStyle(
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style_.color,
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style_.outline,
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style_.outline_color,
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style_.outline_width,
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style_.outline_stroke
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);
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devices::Graphics::Instance().DrawTextLayout(text_layout_);
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}
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}
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void Text::Reset()
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{
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// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD>ʽ<EFBFBD><CABD>
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CreateFormat();
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// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֲ<EFBFBD><D6B2><EFBFBD>
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CreateLayout();
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}
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void Text::CreateFormat()
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{
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SafeRelease(text_format_);
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ThrowIfFailed(
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devices::Graphics::Instance().CreateTextFormat(
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&text_format_,
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font_
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)
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);
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// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֶ<EFBFBD><D6B6>뷽ʽ
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text_format_->SetTextAlignment(DWRITE_TEXT_ALIGNMENT(style_.alignment));
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// <20><><EFBFBD><EFBFBD><EFBFBD>м<EFBFBD><D0BC><EFBFBD>
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if (style_.line_spacing == 0.f)
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{
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text_format_->SetLineSpacing(DWRITE_LINE_SPACING_METHOD_DEFAULT, 0, 0);
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}
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else
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{
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text_format_->SetLineSpacing(
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DWRITE_LINE_SPACING_METHOD_UNIFORM,
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style_.line_spacing,
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style_.line_spacing * 0.8f
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);
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}
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// <20><><EFBFBD><EFBFBD><EFBFBD>ı<EFBFBD><C4B1>Զ<EFBFBD><D4B6><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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if (style_.wrap)
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{
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text_format_->SetWordWrapping(DWRITE_WORD_WRAPPING_WRAP);
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}
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else
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{
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text_format_->SetWordWrapping(DWRITE_WORD_WRAPPING_NO_WRAP);
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}
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}
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void Text::CreateLayout()
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{
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SafeRelease(text_layout_);
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// <20>ı<EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD>ַ<EFBFBD><D6B7><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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if (text_.empty())
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{
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this->SetSize(0, 0);
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return;
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}
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if (text_format_ == nullptr)
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{
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E2D_WARNING("Text::CreateLayout failed! text_format_ NULL pointer exception.");
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return;
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}
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// <20><><EFBFBD>ı<EFBFBD><C4B1>Զ<EFBFBD><D4B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>½<EFBFBD><C2BD>д<EFBFBD><D0B4><EFBFBD>
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if (style_.wrap)
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{
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ThrowIfFailed(
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devices::Graphics::Instance().CreateTextLayout(
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&text_layout_,
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text_,
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text_format_,
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style_.wrap_width
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)
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);
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// <20><>ȡ<EFBFBD>ı<EFBFBD><C4B1><EFBFBD><EFBFBD>ֵĿ<D6B5><C4BF>Ⱥ߶<CDB8>
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DWRITE_TEXT_METRICS metrics;
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text_layout_->GetMetrics(&metrics);
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// <20><><EFBFBD><EFBFBD><EFBFBD>ı<EFBFBD><C4B1><EFBFBD><EFBFBD><EFBFBD>
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this->SetSize(metrics.layoutWidth, metrics.height);
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}
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else
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{
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// Ϊ<><CEAA>ֹ<EFBFBD>ı<EFBFBD><C4B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>⣬<EFBFBD><E2A3AC><EFBFBD><EFBFBD><EFBFBD>ȴ<EFBFBD><C8B4><EFBFBD> layout <20>Ի<EFBFBD>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD>
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ThrowIfFailed(
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devices::Graphics::Instance().CreateTextLayout(
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&text_layout_,
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text_,
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text_format_,
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0
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)
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);
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// <20><>ȡ<EFBFBD>ı<EFBFBD><C4B1><EFBFBD><EFBFBD>ֵĿ<D6B5><C4BF>Ⱥ߶<CDB8>
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DWRITE_TEXT_METRICS metrics;
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text_layout_->GetMetrics(&metrics);
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// <20><><EFBFBD><EFBFBD><EFBFBD>ı<EFBFBD><C4B1><EFBFBD><EFBFBD><EFBFBD>
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this->SetSize(metrics.width, metrics.height);
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// <20><><EFBFBD>´<EFBFBD><C2B4><EFBFBD> layout
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SafeRelease(text_layout_);
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ThrowIfFailed(
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devices::Graphics::Instance().CreateTextLayout(
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&text_layout_,
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text_,
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text_format_,
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GetTransform().size.width
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)
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);
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}
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// <20><><EFBFBD><EFBFBD><EFBFBD>»<EFBFBD><C2BB>ߺ<EFBFBD>ɾ<EFBFBD><C9BE><EFBFBD><EFBFBD>
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DWRITE_TEXT_RANGE range = { 0, static_cast<UINT32>(text_.length()) };
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if (style_.underline)
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{
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text_layout_->SetUnderline(true, range);
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}
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if (style_.strikethrough)
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{
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text_layout_->SetStrikethrough(true, range);
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}
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}
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}
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