530 lines
11 KiB
C++
530 lines
11 KiB
C++
// Copyright (c) 2016-2018 Kiwano - 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 "TextRenderer.h"
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namespace kiwano
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{
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class TextRenderer
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: public ITextRenderer
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{
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public:
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TextRenderer(
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ID2D1RenderTarget* pRT
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);
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~TextRenderer();
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STDMETHOD(CreateDeviceResources)();
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STDMETHOD_(void, SetTextStyle)(
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CONST D2D1_COLOR_F &fillColor,
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BOOL outline,
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CONST D2D1_COLOR_F &outlineColor,
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FLOAT outlineWidth,
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ID2D1StrokeStyle* outlineJoin
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);
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STDMETHOD(DrawGlyphRun)(
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__maybenull void* clientDrawingContext,
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FLOAT baselineOriginX,
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FLOAT baselineOriginY,
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DWRITE_MEASURING_MODE measuringMode,
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__in DWRITE_GLYPH_RUN const* glyphRun,
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__in DWRITE_GLYPH_RUN_DESCRIPTION const* glyphRunDescription,
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IUnknown* clientDrawingEffect
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);
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STDMETHOD(DrawUnderline)(
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__maybenull void* clientDrawingContext,
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FLOAT baselineOriginX,
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FLOAT baselineOriginY,
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__in DWRITE_UNDERLINE const* underline,
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IUnknown* clientDrawingEffect
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);
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STDMETHOD(DrawStrikethrough)(
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__maybenull void* clientDrawingContext,
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FLOAT baselineOriginX,
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FLOAT baselineOriginY,
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__in DWRITE_STRIKETHROUGH const* strikethrough,
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IUnknown* clientDrawingEffect
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);
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STDMETHOD(DrawInlineObject)(
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__maybenull void* clientDrawingContext,
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FLOAT originX,
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FLOAT originY,
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IDWriteInlineObject* inlineObject,
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BOOL IsSideways,
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BOOL IsRightToLeft,
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IUnknown* clientDrawingEffect
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);
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STDMETHOD(IsPixelSnappingDisabled)(
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__maybenull void* clientDrawingContext,
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__out BOOL* isDisabled
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);
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STDMETHOD(GetCurrentTransform)(
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__maybenull void* clientDrawingContext,
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__out DWRITE_MATRIX* transform
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);
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STDMETHOD(GetPixelsPerDip)(
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__maybenull void* clientDrawingContext,
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__out FLOAT* pixelsPerDip
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);
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public:
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unsigned long STDMETHODCALLTYPE AddRef();
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unsigned long STDMETHODCALLTYPE Release();
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HRESULT STDMETHODCALLTYPE QueryInterface(
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IID const& riid,
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void** ppvObject
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);
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private:
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unsigned long cRefCount_;
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D2D1_COLOR_F sFillColor_;
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D2D1_COLOR_F sOutlineColor_;
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FLOAT fOutlineWidth;
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BOOL bShowOutline_;
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ID2D1Factory* pFactory_;
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ID2D1RenderTarget* pRT_;
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ID2D1SolidColorBrush* pBrush_;
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ID2D1StrokeStyle* pCurrStrokeStyle_;
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};
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HRESULT ITextRenderer::Create(
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ITextRenderer** ppTextRenderer,
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ID2D1RenderTarget* pRT)
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{
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HRESULT hr = E_FAIL;
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if (ppTextRenderer)
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{
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TextRenderer* pTextRenderer = new (std::nothrow) TextRenderer(pRT);
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if (pTextRenderer)
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{
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hr = pTextRenderer->CreateDeviceResources();
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if (SUCCEEDED(hr))
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{
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pTextRenderer->AddRef();
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DX::SafeRelease(*ppTextRenderer);
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(*ppTextRenderer) = pTextRenderer;
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return S_OK;
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}
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else
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{
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delete pTextRenderer;
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pTextRenderer = NULL;
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}
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}
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}
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return hr;
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}
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TextRenderer::TextRenderer(ID2D1RenderTarget* pRT)
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: cRefCount_(0)
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, pFactory_(NULL)
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, pRT_(pRT)
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, pBrush_(NULL)
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, sFillColor_()
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, sOutlineColor_()
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, fOutlineWidth(1)
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, bShowOutline_(TRUE)
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, pCurrStrokeStyle_(NULL)
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{
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pRT_->AddRef();
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pRT_->GetFactory(&pFactory_);
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}
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TextRenderer::~TextRenderer()
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{
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DX::SafeRelease(pFactory_);
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DX::SafeRelease(pRT_);
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DX::SafeRelease(pBrush_);
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}
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STDMETHODIMP TextRenderer::CreateDeviceResources()
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{
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HRESULT hr = S_OK;
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DX::SafeRelease(pBrush_);
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hr = pRT_->CreateSolidColorBrush(
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D2D1::ColorF(D2D1::ColorF::White),
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&pBrush_
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);
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return hr;
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}
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STDMETHODIMP_(void) TextRenderer::SetTextStyle(
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CONST D2D1_COLOR_F &fillColor,
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BOOL outline,
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CONST D2D1_COLOR_F &outlineColor,
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FLOAT outlineWidth,
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ID2D1StrokeStyle* outlineJoin)
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{
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sFillColor_ = fillColor;
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bShowOutline_ = outline;
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sOutlineColor_ = outlineColor;
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fOutlineWidth = 2 * outlineWidth;
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pCurrStrokeStyle_ = outlineJoin;
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}
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STDMETHODIMP TextRenderer::DrawGlyphRun(
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__maybenull void* clientDrawingContext,
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FLOAT baselineOriginX,
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FLOAT baselineOriginY,
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DWRITE_MEASURING_MODE measuringMode,
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__in DWRITE_GLYPH_RUN const* glyphRun,
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__in DWRITE_GLYPH_RUN_DESCRIPTION const* glyphRunDescription,
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IUnknown* clientDrawingEffect)
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{
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KGE_NOT_USED(clientDrawingContext);
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KGE_NOT_USED(measuringMode);
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KGE_NOT_USED(glyphRunDescription);
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KGE_NOT_USED(clientDrawingEffect);
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HRESULT hr = S_OK;
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ID2D1PathGeometry* pPathGeometry = NULL;
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hr = pFactory_->CreatePathGeometry(
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&pPathGeometry
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);
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ID2D1GeometrySink* pSink = NULL;
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if (SUCCEEDED(hr))
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{
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hr = pPathGeometry->Open(
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&pSink
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);
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}
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if (SUCCEEDED(hr))
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{
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hr = glyphRun->fontFace->GetGlyphRunOutline(
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glyphRun->fontEmSize,
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glyphRun->glyphIndices,
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glyphRun->glyphAdvances,
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glyphRun->glyphOffsets,
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glyphRun->glyphCount,
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glyphRun->isSideways,
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glyphRun->bidiLevel % 2,
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pSink
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);
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}
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if (SUCCEEDED(hr))
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{
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hr = pSink->Close();
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}
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D2D1::Matrix3x2F const matrix = D2D1::Matrix3x2F(
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1.0f, 0.0f,
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0.0f, 1.0f,
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baselineOriginX, baselineOriginY
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);
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ID2D1TransformedGeometry* pTransformedGeometry = NULL;
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if (SUCCEEDED(hr))
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{
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hr = pFactory_->CreateTransformedGeometry(
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pPathGeometry,
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&matrix,
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&pTransformedGeometry
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);
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}
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if (SUCCEEDED(hr) && bShowOutline_)
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{
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pBrush_->SetColor(sOutlineColor_);
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pRT_->DrawGeometry(
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pTransformedGeometry,
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pBrush_,
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fOutlineWidth,
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pCurrStrokeStyle_
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);
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}
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if (SUCCEEDED(hr))
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{
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pBrush_->SetColor(sFillColor_);
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pRT_->FillGeometry(
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pTransformedGeometry,
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pBrush_
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);
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}
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DX::SafeRelease(pPathGeometry);
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DX::SafeRelease(pSink);
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DX::SafeRelease(pTransformedGeometry);
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return hr;
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}
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STDMETHODIMP TextRenderer::DrawUnderline(
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__maybenull void* clientDrawingContext,
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FLOAT baselineOriginX,
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FLOAT baselineOriginY,
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__in DWRITE_UNDERLINE const* underline,
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IUnknown* clientDrawingEffect)
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{
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KGE_NOT_USED(clientDrawingContext);
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KGE_NOT_USED(clientDrawingEffect);
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HRESULT hr;
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D2D1_RECT_F rect = D2D1::RectF(
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0,
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underline->offset,
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underline->width,
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underline->offset + underline->thickness
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);
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ID2D1RectangleGeometry* pRectangleGeometry = NULL;
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hr = pFactory_->CreateRectangleGeometry(
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&rect,
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&pRectangleGeometry
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);
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D2D1::Matrix3x2F const matrix = D2D1::Matrix3x2F(
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1.0f, 0.0f,
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0.0f, 1.0f,
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baselineOriginX, baselineOriginY
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);
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ID2D1TransformedGeometry* pTransformedGeometry = NULL;
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if (SUCCEEDED(hr))
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{
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hr = pFactory_->CreateTransformedGeometry(
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pRectangleGeometry,
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&matrix,
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&pTransformedGeometry
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);
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}
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if (SUCCEEDED(hr) && bShowOutline_)
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{
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pBrush_->SetColor(sOutlineColor_);
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pRT_->DrawGeometry(
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pTransformedGeometry,
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pBrush_,
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fOutlineWidth,
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pCurrStrokeStyle_
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);
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}
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if (SUCCEEDED(hr))
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{
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pBrush_->SetColor(sFillColor_);
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pRT_->FillGeometry(
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pTransformedGeometry,
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pBrush_
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);
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}
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DX::SafeRelease(pRectangleGeometry);
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DX::SafeRelease(pTransformedGeometry);
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return S_OK;
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}
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STDMETHODIMP TextRenderer::DrawStrikethrough(
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__maybenull void* clientDrawingContext,
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FLOAT baselineOriginX,
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FLOAT baselineOriginY,
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__in DWRITE_STRIKETHROUGH const* strikethrough,
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IUnknown* clientDrawingEffect)
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{
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KGE_NOT_USED(clientDrawingContext);
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KGE_NOT_USED(clientDrawingEffect);
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HRESULT hr;
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D2D1_RECT_F rect = D2D1::RectF(
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0,
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strikethrough->offset,
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strikethrough->width,
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strikethrough->offset + strikethrough->thickness
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);
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ID2D1RectangleGeometry* pRectangleGeometry = NULL;
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hr = pFactory_->CreateRectangleGeometry(
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&rect,
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&pRectangleGeometry
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);
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D2D1::Matrix3x2F const matrix = D2D1::Matrix3x2F(
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1.0f, 0.0f,
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0.0f, 1.0f,
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baselineOriginX, baselineOriginY
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);
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ID2D1TransformedGeometry* pTransformedGeometry = NULL;
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if (SUCCEEDED(hr))
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{
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hr = pFactory_->CreateTransformedGeometry(
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pRectangleGeometry,
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&matrix,
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&pTransformedGeometry
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);
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}
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if (SUCCEEDED(hr) && bShowOutline_)
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{
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pBrush_->SetColor(sOutlineColor_);
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pRT_->DrawGeometry(
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pTransformedGeometry,
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pBrush_,
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fOutlineWidth,
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pCurrStrokeStyle_
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);
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}
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if (SUCCEEDED(hr))
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{
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pBrush_->SetColor(sFillColor_);
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pRT_->FillGeometry(
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pTransformedGeometry,
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pBrush_
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);
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}
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DX::SafeRelease(pRectangleGeometry);
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DX::SafeRelease(pTransformedGeometry);
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return S_OK;
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}
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STDMETHODIMP TextRenderer::DrawInlineObject(
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__maybenull void* clientDrawingContext,
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FLOAT originX,
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FLOAT originY,
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IDWriteInlineObject* inlineObject,
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BOOL IsSideways,
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BOOL IsRightToLeft,
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IUnknown* clientDrawingEffect)
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{
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KGE_NOT_USED(clientDrawingContext);
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KGE_NOT_USED(originX);
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KGE_NOT_USED(originY);
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KGE_NOT_USED(inlineObject);
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KGE_NOT_USED(IsSideways);
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KGE_NOT_USED(IsRightToLeft);
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KGE_NOT_USED(clientDrawingEffect);
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return E_NOTIMPL;
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}
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STDMETHODIMP_(unsigned long) TextRenderer::AddRef()
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{
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return InterlockedIncrement(&cRefCount_);
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}
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STDMETHODIMP_(unsigned long) TextRenderer::Release()
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{
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unsigned long newCount = InterlockedDecrement(&cRefCount_);
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if (newCount == 0)
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{
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delete this;
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return 0;
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}
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return newCount;
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}
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STDMETHODIMP TextRenderer::IsPixelSnappingDisabled(
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__maybenull void* clientDrawingContext,
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__out BOOL* isDisabled)
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{
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KGE_NOT_USED(clientDrawingContext);
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*isDisabled = FALSE;
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return S_OK;
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}
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STDMETHODIMP TextRenderer::GetCurrentTransform(
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__maybenull void* clientDrawingContext,
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__out DWRITE_MATRIX* transform)
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{
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KGE_NOT_USED(clientDrawingContext);
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pRT_->GetTransform(reinterpret_cast<D2D1_MATRIX_3X2_F*>(transform));
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return S_OK;
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}
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STDMETHODIMP TextRenderer::GetPixelsPerDip(
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__maybenull void* clientDrawingContext,
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__out FLOAT* pixelsPerDip)
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{
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KGE_NOT_USED(clientDrawingContext);
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float x, yUnused;
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pRT_->GetDpi(&x, &yUnused);
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*pixelsPerDip = x / 96;
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return S_OK;
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}
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STDMETHODIMP TextRenderer::QueryInterface(
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IID const& riid,
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void** ppvObject)
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{
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if (__uuidof(ITextRenderer) == riid)
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{
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*ppvObject = this;
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}
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else if (__uuidof(IDWriteTextRenderer) == riid)
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{
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*ppvObject = this;
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}
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else if (__uuidof(IDWritePixelSnapping) == riid)
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{
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*ppvObject = this;
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}
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else if (__uuidof(IUnknown) == riid)
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{
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*ppvObject = this;
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}
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else
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{
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*ppvObject = NULL;
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return E_FAIL;
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}
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AddRef();
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return S_OK;
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}
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}
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