Mercurial > vim
view src/gui_dwrite.cpp @ 16856:04692a1fa962
Added tag v8.1.1429 for changeset 19162ff4eacdc6d811985a19bfeefa9f31e41cbd
author | Bram Moolenaar <Bram@vim.org> |
---|---|
date | Thu, 30 May 2019 21:30:05 +0200 |
parents | 563163ec0244 |
children | 26824776adf6 |
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/* vi:set ts=8 sts=4 sw=4 noet: */ /* * Author: MURAOKA Taro <koron.kaoriya@gmail.com> * * Contributors: * - Ken Takata * - Yasuhiro Matsumoto * * Copyright (C) 2013 MURAOKA Taro <koron.kaoriya@gmail.com> * THIS FILE IS DISTRIBUTED UNDER THE VIM LICENSE. */ #define WIN32_LEAN_AND_MEAN #ifndef DYNAMIC_DIRECTX # if WINVER < 0x0600 # error WINVER must be 0x0600 or above to use DirectWrite(DirectX) # endif #endif #include <windows.h> #include <crtdbg.h> #include <assert.h> #include <math.h> #include <d2d1.h> #include <d2d1helper.h> // Disable these macros to compile with old VC and newer SDK (V8.1 or later). #if defined(_MSC_VER) && (_MSC_VER < 1700) # define _COM_Outptr_ __out # define _In_reads_(s) # define _In_reads_opt_(s) # define _Maybenull_ # define _Out_writes_(s) # define _Out_writes_opt_(s) # define _Out_writes_to_(x, y) # define _Out_writes_to_opt_(x, y) # define _Outptr_ #endif #ifdef FEAT_DIRECTX_COLOR_EMOJI # include <dwrite_2.h> #else # include <dwrite.h> #endif #include "gui_dwrite.h" #ifdef __MINGW32__ # define __maybenull SAL__maybenull # define __in SAL__in # define __out SAL__out #endif #if (defined(_MSC_VER) && (_MSC_VER >= 1700)) || (__cplusplus >= 201103L) # define FINAL final #else # define FINAL #endif #ifdef DYNAMIC_DIRECTX extern "C" HINSTANCE vimLoadLib(char *name); typedef int (WINAPI *PGETUSERDEFAULTLOCALENAME)(LPWSTR, int); typedef HRESULT (WINAPI *PD2D1CREATEFACTORY)(D2D1_FACTORY_TYPE, REFIID, const D2D1_FACTORY_OPTIONS *, void **); typedef HRESULT (WINAPI *PDWRITECREATEFACTORY)(DWRITE_FACTORY_TYPE, REFIID, IUnknown **); static HINSTANCE hD2D1DLL = NULL; static HINSTANCE hDWriteDLL = NULL; static PGETUSERDEFAULTLOCALENAME pGetUserDefaultLocaleName = NULL; static PD2D1CREATEFACTORY pD2D1CreateFactory = NULL; static PDWRITECREATEFACTORY pDWriteCreateFactory = NULL; #define GetUserDefaultLocaleName (*pGetUserDefaultLocaleName) #define D2D1CreateFactory (*pD2D1CreateFactory) #define DWriteCreateFactory (*pDWriteCreateFactory) static void unload(HINSTANCE &hinst) { if (hinst != NULL) { FreeLibrary(hinst); hinst = NULL; } } #endif // DYNAMIC_DIRECTX template <class T> inline void SafeRelease(T **ppT) { if (*ppT) { (*ppT)->Release(); *ppT = NULL; } } static DWRITE_PIXEL_GEOMETRY ToPixelGeometry(int value) { switch (value) { default: case 0: return DWRITE_PIXEL_GEOMETRY_FLAT; case 1: return DWRITE_PIXEL_GEOMETRY_RGB; case 2: return DWRITE_PIXEL_GEOMETRY_BGR; } } static int ToInt(DWRITE_PIXEL_GEOMETRY value) { switch (value) { case DWRITE_PIXEL_GEOMETRY_FLAT: return 0; case DWRITE_PIXEL_GEOMETRY_RGB: return 1; case DWRITE_PIXEL_GEOMETRY_BGR: return 2; default: return -1; } } static DWRITE_RENDERING_MODE ToRenderingMode(int value) { switch (value) { default: case 0: return DWRITE_RENDERING_MODE_DEFAULT; case 1: return DWRITE_RENDERING_MODE_ALIASED; case 2: return DWRITE_RENDERING_MODE_CLEARTYPE_GDI_CLASSIC; case 3: return DWRITE_RENDERING_MODE_CLEARTYPE_GDI_NATURAL; case 4: return DWRITE_RENDERING_MODE_CLEARTYPE_NATURAL; case 5: return DWRITE_RENDERING_MODE_CLEARTYPE_NATURAL_SYMMETRIC; case 6: return DWRITE_RENDERING_MODE_OUTLINE; } } static D2D1_TEXT_ANTIALIAS_MODE ToTextAntialiasMode(int value) { switch (value) { default: case 0: return D2D1_TEXT_ANTIALIAS_MODE_DEFAULT; case 1: return D2D1_TEXT_ANTIALIAS_MODE_CLEARTYPE; case 2: return D2D1_TEXT_ANTIALIAS_MODE_GRAYSCALE; case 3: return D2D1_TEXT_ANTIALIAS_MODE_ALIASED; } } static int ToInt(DWRITE_RENDERING_MODE value) { switch (value) { case DWRITE_RENDERING_MODE_DEFAULT: return 0; case DWRITE_RENDERING_MODE_ALIASED: return 1; case DWRITE_RENDERING_MODE_CLEARTYPE_GDI_CLASSIC: return 2; case DWRITE_RENDERING_MODE_CLEARTYPE_GDI_NATURAL: return 3; case DWRITE_RENDERING_MODE_CLEARTYPE_NATURAL: return 4; case DWRITE_RENDERING_MODE_CLEARTYPE_NATURAL_SYMMETRIC: return 5; case DWRITE_RENDERING_MODE_OUTLINE: return 6; default: return -1; } } class FontCache { public: struct Item { HFONT hFont; IDWriteTextFormat* pTextFormat; DWRITE_FONT_WEIGHT fontWeight; DWRITE_FONT_STYLE fontStyle; Item() : hFont(NULL), pTextFormat(NULL) {} }; private: int mSize; Item *mItems; public: FontCache(int size = 2) : mSize(size), mItems(new Item[size]) { } ~FontCache() { for (int i = 0; i < mSize; ++i) SafeRelease(&mItems[i].pTextFormat); delete[] mItems; } bool get(HFONT hFont, Item &item) { int n = find(hFont); if (n < 0) return false; item = mItems[n]; slide(n); return true; } void put(const Item& item) { int n = find(item.hFont); if (n < 0) n = mSize - 1; if (mItems[n].pTextFormat != item.pTextFormat) { SafeRelease(&mItems[n].pTextFormat); item.pTextFormat->AddRef(); } mItems[n] = item; slide(n); } private: int find(HFONT hFont) { for (int i = 0; i < mSize; ++i) { if (mItems[i].hFont == hFont) return i; } return -1; } void slide(int nextTop) { if (nextTop == 0) return; Item tmp = mItems[nextTop]; for (int i = nextTop - 1; i >= 0; --i) mItems[i + 1] = mItems[i]; mItems[0] = tmp; } }; enum DrawingMode { DM_GDI = 0, DM_DIRECTX = 1, DM_INTEROP = 2, }; struct DWriteContext { HDC mHDC; RECT mBindRect; DrawingMode mDMode; HDC mInteropHDC; bool mDrawing; bool mFallbackDC; ID2D1Factory *mD2D1Factory; ID2D1DCRenderTarget *mRT; ID2D1GdiInteropRenderTarget *mGDIRT; ID2D1SolidColorBrush *mBrush; ID2D1Bitmap *mBitmap; IDWriteFactory *mDWriteFactory; #ifdef FEAT_DIRECTX_COLOR_EMOJI IDWriteFactory2 *mDWriteFactory2; #endif IDWriteGdiInterop *mGdiInterop; IDWriteRenderingParams *mRenderingParams; FontCache mFontCache; IDWriteTextFormat *mTextFormat; DWRITE_FONT_WEIGHT mFontWeight; DWRITE_FONT_STYLE mFontStyle; D2D1_TEXT_ANTIALIAS_MODE mTextAntialiasMode; // METHODS DWriteContext(); virtual ~DWriteContext(); HRESULT CreateDeviceResources(); void DiscardDeviceResources(); HRESULT CreateTextFormatFromLOGFONT(const LOGFONTW &logFont, IDWriteTextFormat **ppTextFormat); HRESULT SetFontByLOGFONT(const LOGFONTW &logFont); void SetFont(HFONT hFont); void Rebind(); void BindDC(HDC hdc, const RECT *rect); HRESULT SetDrawingMode(DrawingMode mode); ID2D1Brush* SolidBrush(COLORREF color); void DrawText(const WCHAR *text, int len, int x, int y, int w, int h, int cellWidth, COLORREF color, UINT fuOptions, const RECT *lprc, const INT *lpDx); void FillRect(const RECT *rc, COLORREF color); void DrawLine(int x1, int y1, int x2, int y2, COLORREF color); void SetPixel(int x, int y, COLORREF color); void Scroll(int x, int y, const RECT *rc); void Flush(); void SetRenderingParams( const DWriteRenderingParams *params); DWriteRenderingParams *GetRenderingParams( DWriteRenderingParams *params); }; class AdjustedGlyphRun : public DWRITE_GLYPH_RUN { private: FLOAT &mAccum; FLOAT mDelta; FLOAT *mAdjustedAdvances; public: AdjustedGlyphRun( const DWRITE_GLYPH_RUN *glyphRun, FLOAT cellWidth, FLOAT &accum) : DWRITE_GLYPH_RUN(*glyphRun), mAccum(accum), mDelta(0.0f), mAdjustedAdvances(new FLOAT[glyphRun->glyphCount]) { assert(cellWidth != 0.0f); for (UINT32 i = 0; i < glyphRun->glyphCount; ++i) { FLOAT orig = glyphRun->glyphAdvances[i]; FLOAT adjusted = adjustToCell(orig, cellWidth); mAdjustedAdvances[i] = adjusted; mDelta += adjusted - orig; } glyphAdvances = mAdjustedAdvances; } ~AdjustedGlyphRun() { mAccum += mDelta; delete[] mAdjustedAdvances; } static FLOAT adjustToCell(FLOAT value, FLOAT cellWidth) { int cellCount = int(floor(value / cellWidth + 0.5f)); if (cellCount < 1) cellCount = 1; return cellCount * cellWidth; } }; struct TextRendererContext { // const fields. COLORREF color; FLOAT cellWidth; // working fields. FLOAT offsetX; }; class TextRenderer FINAL : public IDWriteTextRenderer { public: TextRenderer( DWriteContext* pDWC) : cRefCount_(0), pDWC_(pDWC) { AddRef(); } // add "virtual" to avoid a compiler warning virtual ~TextRenderer() { } IFACEMETHOD(IsPixelSnappingDisabled)( __maybenull void* clientDrawingContext, __out BOOL* isDisabled) { *isDisabled = FALSE; return S_OK; } IFACEMETHOD(GetCurrentTransform)( __maybenull void* clientDrawingContext, __out DWRITE_MATRIX* transform) { // forward the render target's transform pDWC_->mRT->GetTransform( reinterpret_cast<D2D1_MATRIX_3X2_F*>(transform)); return S_OK; } IFACEMETHOD(GetPixelsPerDip)( __maybenull void* clientDrawingContext, __out FLOAT* pixelsPerDip) { float dpiX, unused; pDWC_->mRT->GetDpi(&dpiX, &unused); *pixelsPerDip = dpiX / 96.0f; return S_OK; } IFACEMETHOD(DrawUnderline)( __maybenull void* clientDrawingContext, FLOAT baselineOriginX, FLOAT baselineOriginY, __in DWRITE_UNDERLINE const* underline, IUnknown* clientDrawingEffect) { return E_NOTIMPL; } IFACEMETHOD(DrawStrikethrough)( __maybenull void* clientDrawingContext, FLOAT baselineOriginX, FLOAT baselineOriginY, __in DWRITE_STRIKETHROUGH const* strikethrough, IUnknown* clientDrawingEffect) { return E_NOTIMPL; } IFACEMETHOD(DrawInlineObject)( __maybenull void* clientDrawingContext, FLOAT originX, FLOAT originY, IDWriteInlineObject* inlineObject, BOOL isSideways, BOOL isRightToLeft, IUnknown* clientDrawingEffect) { return E_NOTIMPL; } IFACEMETHOD(DrawGlyphRun)( __maybenull void* clientDrawingContext, FLOAT baselineOriginX, FLOAT baselineOriginY, DWRITE_MEASURING_MODE measuringMode, __in DWRITE_GLYPH_RUN const* glyphRun, __in DWRITE_GLYPH_RUN_DESCRIPTION const* glyphRunDescription, IUnknown* clientDrawingEffect) { TextRendererContext *context = reinterpret_cast<TextRendererContext*>(clientDrawingContext); AdjustedGlyphRun adjustedGlyphRun(glyphRun, context->cellWidth, context->offsetX); #ifdef FEAT_DIRECTX_COLOR_EMOJI if (pDWC_->mDWriteFactory2 != NULL) { IDWriteColorGlyphRunEnumerator *enumerator = NULL; HRESULT hr = pDWC_->mDWriteFactory2->TranslateColorGlyphRun( baselineOriginX + context->offsetX, baselineOriginY, &adjustedGlyphRun, NULL, DWRITE_MEASURING_MODE_GDI_NATURAL, NULL, 0, &enumerator); if (SUCCEEDED(hr)) { // Draw by IDWriteFactory2 for color emoji BOOL hasRun = TRUE; enumerator->MoveNext(&hasRun); while (hasRun) { const DWRITE_COLOR_GLYPH_RUN* colorGlyphRun; enumerator->GetCurrentRun(&colorGlyphRun); pDWC_->mBrush->SetColor(colorGlyphRun->runColor); pDWC_->mRT->DrawGlyphRun( D2D1::Point2F( colorGlyphRun->baselineOriginX, colorGlyphRun->baselineOriginY), &colorGlyphRun->glyphRun, pDWC_->mBrush, DWRITE_MEASURING_MODE_NATURAL); enumerator->MoveNext(&hasRun); } SafeRelease(&enumerator); return S_OK; } } #endif // Draw by IDWriteFactory (without color emoji) pDWC_->mRT->DrawGlyphRun( D2D1::Point2F( baselineOriginX + context->offsetX, baselineOriginY), &adjustedGlyphRun, pDWC_->SolidBrush(context->color), DWRITE_MEASURING_MODE_NATURAL); return S_OK; } public: IFACEMETHOD_(unsigned long, AddRef) () { return InterlockedIncrement(&cRefCount_); } IFACEMETHOD_(unsigned long, Release) () { long newCount = InterlockedDecrement(&cRefCount_); if (newCount == 0) { delete this; return 0; } return newCount; } IFACEMETHOD(QueryInterface)( IID const& riid, void** ppvObject) { if (__uuidof(IDWriteTextRenderer) == riid) { *ppvObject = this; } else if (__uuidof(IDWritePixelSnapping) == riid) { *ppvObject = this; } else if (__uuidof(IUnknown) == riid) { *ppvObject = this; } else { *ppvObject = NULL; return E_FAIL; } return S_OK; } private: long cRefCount_; DWriteContext* pDWC_; }; DWriteContext::DWriteContext() : mHDC(NULL), mBindRect(), mDMode(DM_GDI), mInteropHDC(NULL), mDrawing(false), mFallbackDC(false), mD2D1Factory(NULL), mRT(NULL), mGDIRT(NULL), mBrush(NULL), mBitmap(NULL), mDWriteFactory(NULL), #ifdef FEAT_DIRECTX_COLOR_EMOJI mDWriteFactory2(NULL), #endif mGdiInterop(NULL), mRenderingParams(NULL), mFontCache(8), mTextFormat(NULL), mFontWeight(DWRITE_FONT_WEIGHT_NORMAL), mFontStyle(DWRITE_FONT_STYLE_NORMAL), mTextAntialiasMode(D2D1_TEXT_ANTIALIAS_MODE_DEFAULT) { HRESULT hr; hr = D2D1CreateFactory(D2D1_FACTORY_TYPE_SINGLE_THREADED, __uuidof(ID2D1Factory), NULL, reinterpret_cast<void**>(&mD2D1Factory)); _RPT2(_CRT_WARN, "D2D1CreateFactory: hr=%p p=%p\n", hr, mD2D1Factory); if (SUCCEEDED(hr)) { hr = DWriteCreateFactory( DWRITE_FACTORY_TYPE_SHARED, __uuidof(IDWriteFactory), reinterpret_cast<IUnknown**>(&mDWriteFactory)); _RPT2(_CRT_WARN, "DWriteCreateFactory: hr=%p p=%p\n", hr, mDWriteFactory); } #ifdef FEAT_DIRECTX_COLOR_EMOJI if (SUCCEEDED(hr)) { DWriteCreateFactory( DWRITE_FACTORY_TYPE_SHARED, __uuidof(IDWriteFactory2), reinterpret_cast<IUnknown**>(&mDWriteFactory2)); _RPT1(_CRT_WARN, "IDWriteFactory2: %s\n", SUCCEEDED(hr) ? "available" : "not available"); } #endif if (SUCCEEDED(hr)) { hr = mDWriteFactory->GetGdiInterop(&mGdiInterop); _RPT2(_CRT_WARN, "GetGdiInterop: hr=%p p=%p\n", hr, mGdiInterop); } if (SUCCEEDED(hr)) { hr = mDWriteFactory->CreateRenderingParams(&mRenderingParams); _RPT2(_CRT_WARN, "CreateRenderingParams: hr=%p p=%p\n", hr, mRenderingParams); } } DWriteContext::~DWriteContext() { SafeRelease(&mTextFormat); SafeRelease(&mRenderingParams); SafeRelease(&mGdiInterop); SafeRelease(&mDWriteFactory); #ifdef FEAT_DIRECTX_COLOR_EMOJI SafeRelease(&mDWriteFactory2); #endif SafeRelease(&mBitmap); SafeRelease(&mBrush); SafeRelease(&mGDIRT); SafeRelease(&mRT); SafeRelease(&mD2D1Factory); } HRESULT DWriteContext::CreateDeviceResources() { HRESULT hr; if (mRT != NULL) return S_OK; D2D1_RENDER_TARGET_PROPERTIES props = { D2D1_RENDER_TARGET_TYPE_DEFAULT, { DXGI_FORMAT_B8G8R8A8_UNORM, D2D1_ALPHA_MODE_IGNORE }, 0, 0, D2D1_RENDER_TARGET_USAGE_GDI_COMPATIBLE, D2D1_FEATURE_LEVEL_DEFAULT }; hr = mD2D1Factory->CreateDCRenderTarget(&props, &mRT); _RPT2(_CRT_WARN, "CreateDCRenderTarget: hr=%p p=%p\n", hr, mRT); if (SUCCEEDED(hr)) { // This always succeeds. mRT->QueryInterface( __uuidof(ID2D1GdiInteropRenderTarget), reinterpret_cast<void**>(&mGDIRT)); _RPT1(_CRT_WARN, "GdiInteropRenderTarget: p=%p\n", mGDIRT); } if (SUCCEEDED(hr)) { hr = mRT->CreateSolidColorBrush( D2D1::ColorF(D2D1::ColorF::Black), &mBrush); _RPT2(_CRT_WARN, "CreateSolidColorBrush: hr=%p p=%p\n", hr, mBrush); } if (SUCCEEDED(hr)) Rebind(); return hr; } void DWriteContext::DiscardDeviceResources() { SafeRelease(&mBitmap); SafeRelease(&mBrush); SafeRelease(&mGDIRT); SafeRelease(&mRT); } HRESULT DWriteContext::CreateTextFormatFromLOGFONT(const LOGFONTW &logFont, IDWriteTextFormat **ppTextFormat) { // Most of this function is copied from: https://github.com/Microsoft/Windows-classic-samples/blob/master/Samples/Win7Samples/multimedia/DirectWrite/RenderTest/TextHelpers.cpp HRESULT hr = S_OK; IDWriteTextFormat *pTextFormat = NULL; IDWriteFont *font = NULL; IDWriteFontFamily *fontFamily = NULL; IDWriteLocalizedStrings *localizedFamilyNames = NULL; float fontSize = 0; if (SUCCEEDED(hr)) { hr = mGdiInterop->CreateFontFromLOGFONT(&logFont, &font); } // Get the font family to which this font belongs. if (SUCCEEDED(hr)) { hr = font->GetFontFamily(&fontFamily); } // Get the family names. This returns an object that encapsulates one or // more names with the same meaning but in different languages. if (SUCCEEDED(hr)) { hr = fontFamily->GetFamilyNames(&localizedFamilyNames); } // Get the family name at index zero. If we were going to display the name // we'd want to try to find one that matched the use locale, but for // purposes of creating a text format object any language will do. wchar_t familyName[100]; if (SUCCEEDED(hr)) { hr = localizedFamilyNames->GetString(0, familyName, ARRAYSIZE(familyName)); } if (SUCCEEDED(hr)) { // Use lfHeight of the LOGFONT as font size. fontSize = float(logFont.lfHeight); if (fontSize < 0) { // Negative lfHeight represents the size of the em unit. fontSize = -fontSize; } else { // Positive lfHeight represents the cell height (ascent + // descent). DWRITE_FONT_METRICS fontMetrics; font->GetMetrics(&fontMetrics); // Convert the cell height (ascent + descent) from design units // to ems. float cellHeight = static_cast<float>( fontMetrics.ascent + fontMetrics.descent) / fontMetrics.designUnitsPerEm; // Divide the font size by the cell height to get the font em // size. fontSize /= cellHeight; } } // The text format includes a locale name. Ideally, this would be the // language of the text, which may or may not be the same as the primary // language of the user. However, for our purposes the user locale will do. wchar_t localeName[LOCALE_NAME_MAX_LENGTH]; if (SUCCEEDED(hr)) { if (GetUserDefaultLocaleName(localeName, LOCALE_NAME_MAX_LENGTH) == 0) hr = HRESULT_FROM_WIN32(GetLastError()); } if (SUCCEEDED(hr)) { // Create the text format object. hr = mDWriteFactory->CreateTextFormat( familyName, NULL, // no custom font collection font->GetWeight(), font->GetStyle(), font->GetStretch(), fontSize, localeName, &pTextFormat); } if (SUCCEEDED(hr)) hr = pTextFormat->SetTextAlignment(DWRITE_TEXT_ALIGNMENT_LEADING); if (SUCCEEDED(hr)) hr = pTextFormat->SetParagraphAlignment( DWRITE_PARAGRAPH_ALIGNMENT_FAR); if (SUCCEEDED(hr)) hr = pTextFormat->SetWordWrapping(DWRITE_WORD_WRAPPING_NO_WRAP); SafeRelease(&localizedFamilyNames); SafeRelease(&fontFamily); SafeRelease(&font); if (SUCCEEDED(hr)) *ppTextFormat = pTextFormat; else SafeRelease(&pTextFormat); return hr; } HRESULT DWriteContext::SetFontByLOGFONT(const LOGFONTW &logFont) { HRESULT hr = S_OK; IDWriteTextFormat *pTextFormat = NULL; hr = CreateTextFormatFromLOGFONT(logFont, &pTextFormat); if (SUCCEEDED(hr)) { SafeRelease(&mTextFormat); mTextFormat = pTextFormat; mFontWeight = static_cast<DWRITE_FONT_WEIGHT>(logFont.lfWeight); mFontStyle = logFont.lfItalic ? DWRITE_FONT_STYLE_ITALIC : DWRITE_FONT_STYLE_NORMAL; } return hr; } void DWriteContext::SetFont(HFONT hFont) { FontCache::Item item; if (mFontCache.get(hFont, item)) { if (item.pTextFormat != NULL) { item.pTextFormat->AddRef(); SafeRelease(&mTextFormat); mTextFormat = item.pTextFormat; mFontWeight = item.fontWeight; mFontStyle = item.fontStyle; mFallbackDC = false; } else mFallbackDC = true; return; } HRESULT hr = E_FAIL; LOGFONTW lf; if (GetObjectW(hFont, sizeof(lf), &lf)) hr = SetFontByLOGFONT(lf); item.hFont = hFont; if (SUCCEEDED(hr)) { item.pTextFormat = mTextFormat; item.fontWeight = mFontWeight; item.fontStyle = mFontStyle; mFallbackDC = false; } else mFallbackDC = true; mFontCache.put(item); } void DWriteContext::Rebind() { SafeRelease(&mBitmap); mRT->BindDC(mHDC, &mBindRect); mRT->SetTransform(D2D1::IdentityMatrix()); D2D1_BITMAP_PROPERTIES props = { {DXGI_FORMAT_B8G8R8A8_UNORM, D2D1_ALPHA_MODE_IGNORE}, 96.0f, 96.0f }; mRT->CreateBitmap( D2D1::SizeU(mBindRect.right - mBindRect.left, mBindRect.bottom - mBindRect.top), props, &mBitmap); } void DWriteContext::BindDC(HDC hdc, const RECT *rect) { mHDC = hdc; mBindRect = *rect; if (mRT == NULL) CreateDeviceResources(); else { Flush(); Rebind(); } } extern "C" void redraw_later_clear(void); HRESULT DWriteContext::SetDrawingMode(DrawingMode mode) { HRESULT hr = S_OK; switch (mode) { default: case DM_GDI: if (mInteropHDC != NULL) { mGDIRT->ReleaseDC(NULL); mInteropHDC = NULL; } if (mDrawing) { hr = mRT->EndDraw(); if (hr == (HRESULT)D2DERR_RECREATE_TARGET) { hr = S_OK; DiscardDeviceResources(); CreateDeviceResources(); redraw_later_clear(); } mDrawing = false; } break; case DM_DIRECTX: if (mInteropHDC != NULL) { mGDIRT->ReleaseDC(NULL); mInteropHDC = NULL; } else if (mDrawing == false) { CreateDeviceResources(); mRT->BeginDraw(); mDrawing = true; } break; case DM_INTEROP: if (mDrawing == false) { CreateDeviceResources(); mRT->BeginDraw(); mDrawing = true; } if (mInteropHDC == NULL) hr = mGDIRT->GetDC(D2D1_DC_INITIALIZE_MODE_COPY, &mInteropHDC); break; } mDMode = mode; return hr; } ID2D1Brush* DWriteContext::SolidBrush(COLORREF color) { mBrush->SetColor(D2D1::ColorF(UINT32(GetRValue(color)) << 16 | UINT32(GetGValue(color)) << 8 | UINT32(GetBValue(color)))); return mBrush; } void DWriteContext::DrawText(const WCHAR *text, int len, int x, int y, int w, int h, int cellWidth, COLORREF color, UINT fuOptions, const RECT *lprc, const INT *lpDx) { if (mFallbackDC) { // Fall back to GDI rendering. HRESULT hr = SetDrawingMode(DM_INTEROP); if (SUCCEEDED(hr)) { HGDIOBJ hFont = ::GetCurrentObject(mHDC, OBJ_FONT); HGDIOBJ hOldFont = ::SelectObject(mInteropHDC, hFont); ::SetTextColor(mInteropHDC, color); ::SetBkMode(mInteropHDC, ::GetBkMode(mHDC)); ::ExtTextOutW(mInteropHDC, x, y, fuOptions, lprc, text, len, lpDx); ::SelectObject(mInteropHDC, hOldFont); } return; } HRESULT hr; IDWriteTextLayout *textLayout = NULL; SetDrawingMode(DM_DIRECTX); hr = mDWriteFactory->CreateTextLayout(text, len, mTextFormat, FLOAT(w), FLOAT(h), &textLayout); if (SUCCEEDED(hr)) { DWRITE_TEXT_RANGE textRange = { 0, UINT32(len) }; textLayout->SetFontWeight(mFontWeight, textRange); textLayout->SetFontStyle(mFontStyle, textRange); TextRenderer renderer(this); TextRendererContext context = { color, FLOAT(cellWidth), 0.0f }; textLayout->Draw(&context, &renderer, FLOAT(x), FLOAT(y)); } SafeRelease(&textLayout); } void DWriteContext::FillRect(const RECT *rc, COLORREF color) { if (mDMode == DM_INTEROP) { // GDI functions are used before this call. Keep using GDI. // (Switching to Direct2D causes terrible slowdown.) HBRUSH hbr = ::CreateSolidBrush(color); ::FillRect(mInteropHDC, rc, hbr); ::DeleteObject(HGDIOBJ(hbr)); } else { SetDrawingMode(DM_DIRECTX); mRT->FillRectangle( D2D1::RectF(FLOAT(rc->left), FLOAT(rc->top), FLOAT(rc->right), FLOAT(rc->bottom)), SolidBrush(color)); } } void DWriteContext::DrawLine(int x1, int y1, int x2, int y2, COLORREF color) { if (mDMode == DM_INTEROP) { // GDI functions are used before this call. Keep using GDI. // (Switching to Direct2D causes terrible slowdown.) HPEN hpen = ::CreatePen(PS_SOLID, 1, color); HGDIOBJ old_pen = ::SelectObject(mInteropHDC, HGDIOBJ(hpen)); ::MoveToEx(mInteropHDC, x1, y1, NULL); ::LineTo(mInteropHDC, x2, y2); ::SelectObject(mInteropHDC, old_pen); ::DeleteObject(HGDIOBJ(hpen)); } else { SetDrawingMode(DM_DIRECTX); mRT->DrawLine( D2D1::Point2F(FLOAT(x1), FLOAT(y1) + 0.5f), D2D1::Point2F(FLOAT(x2), FLOAT(y2) + 0.5f), SolidBrush(color)); } } void DWriteContext::SetPixel(int x, int y, COLORREF color) { if (mDMode == DM_INTEROP) { // GDI functions are used before this call. Keep using GDI. // (Switching to Direct2D causes terrible slowdown.) ::SetPixel(mInteropHDC, x, y, color); } else { SetDrawingMode(DM_DIRECTX); // Direct2D doesn't have SetPixel API. Use DrawLine instead. mRT->DrawLine( D2D1::Point2F(FLOAT(x), FLOAT(y) + 0.5f), D2D1::Point2F(FLOAT(x+1), FLOAT(y) + 0.5f), SolidBrush(color)); } } void DWriteContext::Scroll(int x, int y, const RECT *rc) { SetDrawingMode(DM_DIRECTX); mRT->Flush(); D2D1_RECT_U srcRect; D2D1_POINT_2U destPoint; if (x >= 0) { srcRect.left = rc->left; srcRect.right = rc->right - x; destPoint.x = rc->left + x; } else { srcRect.left = rc->left - x; srcRect.right = rc->right; destPoint.x = rc->left; } if (y >= 0) { srcRect.top = rc->top; srcRect.bottom = rc->bottom - y; destPoint.y = rc->top + y; } else { srcRect.top = rc->top - y; srcRect.bottom = rc->bottom; destPoint.y = rc->top; } mBitmap->CopyFromRenderTarget(&destPoint, mRT, &srcRect); D2D1_RECT_F destRect = { FLOAT(destPoint.x), FLOAT(destPoint.y), FLOAT(destPoint.x + srcRect.right - srcRect.left), FLOAT(destPoint.y + srcRect.bottom - srcRect.top) }; mRT->DrawBitmap(mBitmap, destRect, 1.0F, D2D1_BITMAP_INTERPOLATION_MODE_NEAREST_NEIGHBOR, destRect); } void DWriteContext::Flush() { SetDrawingMode(DM_GDI); } void DWriteContext::SetRenderingParams( const DWriteRenderingParams *params) { if (mDWriteFactory == NULL) return; IDWriteRenderingParams *renderingParams = NULL; D2D1_TEXT_ANTIALIAS_MODE textAntialiasMode = D2D1_TEXT_ANTIALIAS_MODE_DEFAULT; HRESULT hr; if (params != NULL) { hr = mDWriteFactory->CreateCustomRenderingParams(params->gamma, params->enhancedContrast, params->clearTypeLevel, ToPixelGeometry(params->pixelGeometry), ToRenderingMode(params->renderingMode), &renderingParams); textAntialiasMode = ToTextAntialiasMode(params->textAntialiasMode); } else hr = mDWriteFactory->CreateRenderingParams(&renderingParams); if (SUCCEEDED(hr) && renderingParams != NULL) { SafeRelease(&mRenderingParams); mRenderingParams = renderingParams; mTextAntialiasMode = textAntialiasMode; Flush(); mRT->SetTextRenderingParams(mRenderingParams); mRT->SetTextAntialiasMode(mTextAntialiasMode); } } DWriteRenderingParams * DWriteContext::GetRenderingParams( DWriteRenderingParams *params) { if (params != NULL && mRenderingParams != NULL) { params->gamma = mRenderingParams->GetGamma(); params->enhancedContrast = mRenderingParams->GetEnhancedContrast(); params->clearTypeLevel = mRenderingParams->GetClearTypeLevel(); params->pixelGeometry = ToInt(mRenderingParams->GetPixelGeometry()); params->renderingMode = ToInt(mRenderingParams->GetRenderingMode()); params->textAntialiasMode = mTextAntialiasMode; } return params; } //////////////////////////////////////////////////////////////////////////// // PUBLIC C INTERFACES void DWrite_Init(void) { #ifdef DYNAMIC_DIRECTX // Load libraries. hD2D1DLL = vimLoadLib(const_cast<char*>("d2d1.dll")); hDWriteDLL = vimLoadLib(const_cast<char*>("dwrite.dll")); if (hD2D1DLL == NULL || hDWriteDLL == NULL) { DWrite_Final(); return; } // Get address of procedures. pGetUserDefaultLocaleName = (PGETUSERDEFAULTLOCALENAME)GetProcAddress( GetModuleHandle("kernel32.dll"), "GetUserDefaultLocaleName"); pD2D1CreateFactory = (PD2D1CREATEFACTORY)GetProcAddress(hD2D1DLL, "D2D1CreateFactory"); pDWriteCreateFactory = (PDWRITECREATEFACTORY)GetProcAddress(hDWriteDLL, "DWriteCreateFactory"); #endif } void DWrite_Final(void) { #ifdef DYNAMIC_DIRECTX pGetUserDefaultLocaleName = NULL; pD2D1CreateFactory = NULL; pDWriteCreateFactory = NULL; unload(hDWriteDLL); unload(hD2D1DLL); #endif } DWriteContext * DWriteContext_Open(void) { #ifdef DYNAMIC_DIRECTX if (pGetUserDefaultLocaleName == NULL || pD2D1CreateFactory == NULL || pDWriteCreateFactory == NULL) return NULL; #endif return new DWriteContext(); } void DWriteContext_BindDC(DWriteContext *ctx, HDC hdc, const RECT *rect) { if (ctx != NULL) ctx->BindDC(hdc, rect); } void DWriteContext_SetFont(DWriteContext *ctx, HFONT hFont) { if (ctx != NULL) ctx->SetFont(hFont); } void DWriteContext_DrawText( DWriteContext *ctx, const WCHAR *text, int len, int x, int y, int w, int h, int cellWidth, COLORREF color, UINT fuOptions, const RECT *lprc, const INT *lpDx) { if (ctx != NULL) ctx->DrawText(text, len, x, y, w, h, cellWidth, color, fuOptions, lprc, lpDx); } void DWriteContext_FillRect(DWriteContext *ctx, const RECT *rc, COLORREF color) { if (ctx != NULL) ctx->FillRect(rc, color); } void DWriteContext_DrawLine(DWriteContext *ctx, int x1, int y1, int x2, int y2, COLORREF color) { if (ctx != NULL) ctx->DrawLine(x1, y1, x2, y2, color); } void DWriteContext_SetPixel(DWriteContext *ctx, int x, int y, COLORREF color) { if (ctx != NULL) ctx->SetPixel(x, y, color); } void DWriteContext_Scroll(DWriteContext *ctx, int x, int y, const RECT *rc) { if (ctx != NULL) ctx->Scroll(x, y, rc); } void DWriteContext_Flush(DWriteContext *ctx) { if (ctx != NULL) ctx->Flush(); } void DWriteContext_Close(DWriteContext *ctx) { delete ctx; } void DWriteContext_SetRenderingParams( DWriteContext *ctx, const DWriteRenderingParams *params) { if (ctx != NULL) ctx->SetRenderingParams(params); } DWriteRenderingParams * DWriteContext_GetRenderingParams( DWriteContext *ctx, DWriteRenderingParams *params) { if (ctx != NULL) return ctx->GetRenderingParams(params); else return NULL; }