// Copyright (c) 2016-2018 Easy2D - 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 "Text.h" #include "render.h" #include "base.h" namespace easy2d { //------------------------------------------------------- // Style //------------------------------------------------------- Text::Style::Style() : color(Color::White) , alignment(Align::Left) , wrap(false) , wrap_width(0.f) , line_spacing(0.f) , underline(false) , strikethrough(false) , outline(true) , outline_color(Color(Color::Black, 0.5)) , outline_width(1.f) , outline_stroke(StrokeStyle::Round) {} Text::Style::Style( Color color, Align alignment, bool wrap, float wrap_width, float line_spacing, bool underline, bool strikethrough, bool outline, Color outline_color, float outline_width, StrokeStyle outline_stroke ) : color(color) , alignment(alignment) , wrap(wrap) , wrap_width(wrap_width) , line_spacing(line_spacing) , underline(underline) , strikethrough(strikethrough) , outline(outline) , outline_color(outline_color) , outline_width(outline_width) , outline_stroke(outline_stroke) {} //------------------------------------------------------- // Text //------------------------------------------------------- Text::Text() : font_() , style_() , text_layout_(nullptr) , text_format_(nullptr) { } Text::Text(const String & text, const Font & font, const Style & style) : font_(font) , style_(style) , text_layout_(nullptr) , text_format_(nullptr) , text_(text) { Reset(); } Text::~Text() { SafeRelease(text_format_); SafeRelease(text_layout_); } const String& Text::GetText() const { return text_; } const Font& Text::GetFont() const { return font_; } const Text::Style& Text::GetStyle() const { return style_; } const String& Text::GetFontFamily() const { return font_.family; } float Text::GetFontSize() const { return font_.size; } UINT Text::GetFontWeight() const { return font_.weight; } const Color& Text::GetColor() const { return style_.color; } const Color& Text::GetOutlineColor() const { return style_.outline_color; } float Text::GetOutlineWidth() const { return style_.outline_width; } StrokeStyle Text::GetOutlineStroke() const { return style_.outline_stroke; } int Text::GetLineCount() const { if (text_layout_) { DWRITE_TEXT_METRICS metrics; text_layout_->GetMetrics(&metrics); return static_cast(metrics.lineCount); } else { return 0; } } bool Text::IsItalic() const { return font_.italic; } bool Text::strikethrough() const { return style_.strikethrough; } bool Text::underline() const { return style_.underline; } bool Text::outline() const { return style_.outline; } void Text::SetText(const String& text) { text_ = text; Reset(); } void Text::SetStyle(const Style& style) { style_ = style; Reset(); } void Text::SetFont(const Font & font) { font_ = font; Reset(); } void Text::SetFontFamily(const String& family) { font_.family = family; Reset(); } void Text::SetFontSize(float size) { font_.size = size; Reset(); } void Text::SetFontWeight(UINT weight) { font_.weight = weight; Reset(); } void Text::SetColor(Color color) { style_.color = color; } void Text::SetItalic(bool val) { font_.italic = val; Reset(); } void Text::SetWrapEnabled(bool wrap) { if (style_.wrap != wrap) { style_.wrap = wrap; Reset(); } } void Text::SetWrapWidth(float wrap_width) { if (style_.wrap_width != wrap_width) { style_.wrap_width = std::max(wrap_width, 0.f); if (style_.wrap) { Reset(); } } } void Text::SetLineSpacing(float line_spacing) { if (style_.line_spacing != line_spacing) { style_.line_spacing = line_spacing; Reset(); } } void Text::SetAlignment(Align align) { if (style_.alignment != align) { style_.alignment = align; Reset(); } } void Text::SetUnderline(bool underline) { if (style_.underline != underline) { style_.underline = underline; if (!text_format_) CreateFormat(); CreateLayout(); } } void Text::SetStrikethrough(bool strikethrough) { if (style_.strikethrough != strikethrough) { style_.strikethrough = strikethrough; if (!text_format_) CreateFormat(); CreateLayout(); } } void Text::SetOutline(bool outline) { style_.outline = outline; } void Text::SetOutlineColor(Color outline_color) { style_.outline_color = outline_color; } void Text::SetOutlineWidth(float outline_width) { style_.outline_width = outline_width; } void Text::SetOutlineStroke(StrokeStyle outline_stroke) { style_.outline_stroke = outline_stroke; } void Text::OnDraw() const { if (text_layout_) { // 创建文本区域 D2D1_RECT_F textLayoutRect = D2D1::RectF(0, 0, GetTransform().size.width, GetTransform().size.height); // 设置画刷颜色和透明度 devices::Graphics::Instance().SetBrushOpacity(GetDisplayOpacity()); // 获取文本渲染器 devices::Graphics::Instance().SetTextStyle( style_.color, style_.outline, style_.outline_color, style_.outline_width, style_.outline_stroke ); devices::Graphics::Instance().DrawTextLayout(text_layout_); } } void Text::Reset() { // 创建文字格式化 CreateFormat(); // 创建文字布局 CreateLayout(); } void Text::CreateFormat() { SafeRelease(text_format_); ThrowIfFailed( devices::Graphics::Instance().CreateTextFormat( &text_format_, font_ ) ); // 设置文字对齐方式 text_format_->SetTextAlignment(DWRITE_TEXT_ALIGNMENT(style_.alignment)); // 设置行间距 if (style_.line_spacing == 0.f) { text_format_->SetLineSpacing(DWRITE_LINE_SPACING_METHOD_DEFAULT, 0, 0); } else { text_format_->SetLineSpacing( DWRITE_LINE_SPACING_METHOD_UNIFORM, style_.line_spacing, style_.line_spacing * 0.8f ); } // 打开文本自动换行时，设置换行属性 if (style_.wrap) { text_format_->SetWordWrapping(DWRITE_WORD_WRAPPING_WRAP); } else { text_format_->SetWordWrapping(DWRITE_WORD_WRAPPING_NO_WRAP); } } void Text::CreateLayout() { SafeRelease(text_layout_); // 文本为空字符串时，重置属性 if (text_.empty()) { this->SetSize(0, 0); return; } if (text_format_ == nullptr) { E2D_WARNING("Text::CreateLayout failed! text_format_ NULL pointer exception."); return; } // 对文本自动换行情况下进行处理 if (style_.wrap) { ThrowIfFailed( devices::Graphics::Instance().CreateTextLayout( &text_layout_, text_, text_format_, style_.wrap_width ) ); // 获取文本布局的宽度和高度 DWRITE_TEXT_METRICS metrics; text_layout_->GetMetrics(&metrics); // 重设文本宽高 this->SetSize(metrics.layoutWidth, metrics.height); } else { // 为防止文本对齐问题，根据先创建 layout 以获取宽度 ThrowIfFailed( devices::Graphics::Instance().CreateTextLayout( &text_layout_, text_, text_format_, 0 ) ); // 获取文本布局的宽度和高度 DWRITE_TEXT_METRICS metrics; text_layout_->GetMetrics(&metrics); // 重设文本宽高 this->SetSize(metrics.width, metrics.height); // 重新创建 layout SafeRelease(text_layout_); ThrowIfFailed( devices::Graphics::Instance().CreateTextLayout( &text_layout_, text_, text_format_, GetTransform().size.width ) ); } // 添加下划线和删除线 DWRITE_TEXT_RANGE range = { 0, static_cast(text_.length()) }; if (style_.underline) { text_layout_->SetUnderline(true, range); } if (style_.strikethrough) { text_layout_->SetStrikethrough(true, range); } } }