| // Copyright 2014 PDFium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
| |
| #include "core/fxge/win32/cgdi_plus_ext.h" |
| |
| #include <windows.h> |
| |
| #include <objidl.h> |
| |
| #include <algorithm> |
| #include <sstream> |
| #include <utility> |
| #include <vector> |
| |
| #include "core/fxcrt/fx_memory.h" |
| #include "core/fxcrt/fx_string.h" |
| #include "core/fxcrt/fx_string_wrappers.h" |
| #include "core/fxcrt/fx_system.h" |
| #include "core/fxge/cfx_fillrenderoptions.h" |
| #include "core/fxge/cfx_gemodule.h" |
| #include "core/fxge/cfx_graphstatedata.h" |
| #include "core/fxge/cfx_path.h" |
| #include "core/fxge/dib/cfx_dibitmap.h" |
| #include "core/fxge/win32/cwin32_platform.h" |
| #include "third_party/base/numerics/safe_conversions.h" |
| #include "third_party/base/span.h" |
| |
| // Has to come before gdiplus.h |
| namespace Gdiplus { |
| using std::max; |
| using std::min; |
| } // namespace Gdiplus |
| |
| #include <gdiplus.h> // NOLINT |
| |
| namespace { |
| |
| enum { |
| FuncId_GdipCreatePath2, |
| FuncId_GdipSetPenDashArray, |
| FuncId_GdipSetPenLineJoin, |
| FuncId_GdipCreateFromHDC, |
| FuncId_GdipSetPageUnit, |
| FuncId_GdipSetSmoothingMode, |
| FuncId_GdipCreateSolidFill, |
| FuncId_GdipFillPath, |
| FuncId_GdipDeleteBrush, |
| FuncId_GdipCreatePen1, |
| FuncId_GdipSetPenMiterLimit, |
| FuncId_GdipDrawPath, |
| FuncId_GdipDeletePen, |
| FuncId_GdipDeletePath, |
| FuncId_GdipDeleteGraphics, |
| FuncId_GdipDisposeImage, |
| FuncId_GdipCreateBitmapFromScan0, |
| FuncId_GdipSetImagePalette, |
| FuncId_GdipSetInterpolationMode, |
| FuncId_GdipDrawImagePointsI, |
| FuncId_GdiplusStartup, |
| FuncId_GdipDrawLineI, |
| FuncId_GdipCreatePath, |
| FuncId_GdipSetPathFillMode, |
| FuncId_GdipSetClipRegion, |
| FuncId_GdipWidenPath, |
| FuncId_GdipAddPathLine, |
| FuncId_GdipAddPathRectangle, |
| FuncId_GdipDeleteRegion, |
| FuncId_GdipSetPenLineCap197819, |
| FuncId_GdipSetPenDashOffset, |
| FuncId_GdipCreateMatrix2, |
| FuncId_GdipDeleteMatrix, |
| FuncId_GdipSetWorldTransform, |
| FuncId_GdipSetPixelOffsetMode, |
| }; |
| |
| LPCSTR g_GdipFuncNames[] = { |
| "GdipCreatePath2", |
| "GdipSetPenDashArray", |
| "GdipSetPenLineJoin", |
| "GdipCreateFromHDC", |
| "GdipSetPageUnit", |
| "GdipSetSmoothingMode", |
| "GdipCreateSolidFill", |
| "GdipFillPath", |
| "GdipDeleteBrush", |
| "GdipCreatePen1", |
| "GdipSetPenMiterLimit", |
| "GdipDrawPath", |
| "GdipDeletePen", |
| "GdipDeletePath", |
| "GdipDeleteGraphics", |
| "GdipDisposeImage", |
| "GdipCreateBitmapFromScan0", |
| "GdipSetImagePalette", |
| "GdipSetInterpolationMode", |
| "GdipDrawImagePointsI", |
| "GdiplusStartup", |
| "GdipDrawLineI", |
| "GdipCreatePath", |
| "GdipSetPathFillMode", |
| "GdipSetClipRegion", |
| "GdipWidenPath", |
| "GdipAddPathLine", |
| "GdipAddPathRectangle", |
| "GdipDeleteRegion", |
| "GdipSetPenLineCap197819", |
| "GdipSetPenDashOffset", |
| "GdipCreateMatrix2", |
| "GdipDeleteMatrix", |
| "GdipSetWorldTransform", |
| "GdipSetPixelOffsetMode", |
| }; |
| static_assert(std::size(g_GdipFuncNames) == |
| static_cast<size_t>(FuncId_GdipSetPixelOffsetMode) + 1, |
| "g_GdipFuncNames has wrong size"); |
| |
| using FuncType_GdipCreatePath2 = |
| decltype(&Gdiplus::DllExports::GdipCreatePath2); |
| using FuncType_GdipSetPenDashArray = |
| decltype(&Gdiplus::DllExports::GdipSetPenDashArray); |
| using FuncType_GdipSetPenLineJoin = |
| decltype(&Gdiplus::DllExports::GdipSetPenLineJoin); |
| using FuncType_GdipCreateFromHDC = |
| decltype(&Gdiplus::DllExports::GdipCreateFromHDC); |
| using FuncType_GdipSetPageUnit = |
| decltype(&Gdiplus::DllExports::GdipSetPageUnit); |
| using FuncType_GdipSetSmoothingMode = |
| decltype(&Gdiplus::DllExports::GdipSetSmoothingMode); |
| using FuncType_GdipCreateSolidFill = |
| decltype(&Gdiplus::DllExports::GdipCreateSolidFill); |
| using FuncType_GdipFillPath = decltype(&Gdiplus::DllExports::GdipFillPath); |
| using FuncType_GdipDeleteBrush = |
| decltype(&Gdiplus::DllExports::GdipDeleteBrush); |
| using FuncType_GdipCreatePen1 = decltype(&Gdiplus::DllExports::GdipCreatePen1); |
| using FuncType_GdipSetPenMiterLimit = |
| decltype(&Gdiplus::DllExports::GdipSetPenMiterLimit); |
| using FuncType_GdipDrawPath = decltype(&Gdiplus::DllExports::GdipDrawPath); |
| using FuncType_GdipDeletePen = decltype(&Gdiplus::DllExports::GdipDeletePen); |
| using FuncType_GdipDeletePath = decltype(&Gdiplus::DllExports::GdipDeletePath); |
| using FuncType_GdipDeleteGraphics = |
| decltype(&Gdiplus::DllExports::GdipDeleteGraphics); |
| using FuncType_GdipDisposeImage = |
| decltype(&Gdiplus::DllExports::GdipDisposeImage); |
| using FuncType_GdipCreateBitmapFromScan0 = |
| decltype(&Gdiplus::DllExports::GdipCreateBitmapFromScan0); |
| using FuncType_GdipSetImagePalette = |
| decltype(&Gdiplus::DllExports::GdipSetImagePalette); |
| using FuncType_GdipSetInterpolationMode = |
| decltype(&Gdiplus::DllExports::GdipSetInterpolationMode); |
| using FuncType_GdipDrawImagePointsI = |
| decltype(&Gdiplus::DllExports::GdipDrawImagePointsI); |
| using FuncType_GdiplusStartup = decltype(&Gdiplus::GdiplusStartup); |
| using FuncType_GdipDrawLineI = decltype(&Gdiplus::DllExports::GdipDrawLineI); |
| using FuncType_GdipCreatePath = decltype(&Gdiplus::DllExports::GdipCreatePath); |
| using FuncType_GdipSetPathFillMode = |
| decltype(&Gdiplus::DllExports::GdipSetPathFillMode); |
| using FuncType_GdipSetClipRegion = |
| decltype(&Gdiplus::DllExports::GdipSetClipRegion); |
| using FuncType_GdipWidenPath = decltype(&Gdiplus::DllExports::GdipWidenPath); |
| using FuncType_GdipAddPathLine = |
| decltype(&Gdiplus::DllExports::GdipAddPathLine); |
| using FuncType_GdipAddPathRectangle = |
| decltype(&Gdiplus::DllExports::GdipAddPathRectangle); |
| using FuncType_GdipDeleteRegion = |
| decltype(&Gdiplus::DllExports::GdipDeleteRegion); |
| using FuncType_GdipSetPenLineCap197819 = |
| decltype(&Gdiplus::DllExports::GdipSetPenLineCap197819); |
| using FuncType_GdipSetPenDashOffset = |
| decltype(&Gdiplus::DllExports::GdipSetPenDashOffset); |
| using FuncType_GdipCreateMatrix2 = |
| decltype(&Gdiplus::DllExports::GdipCreateMatrix2); |
| using FuncType_GdipDeleteMatrix = |
| decltype(&Gdiplus::DllExports::GdipDeleteMatrix); |
| using FuncType_GdipSetWorldTransform = |
| decltype(&Gdiplus::DllExports::GdipSetWorldTransform); |
| using FuncType_GdipSetPixelOffsetMode = |
| decltype(&Gdiplus::DllExports::GdipSetPixelOffsetMode); |
| #define CallFunc(funcname) \ |
| reinterpret_cast<FuncType_##funcname>( \ |
| GdiplusExt.m_Functions[FuncId_##funcname]) |
| |
| Gdiplus::GpFillMode FillType2Gdip(CFX_FillRenderOptions::FillType fill_type) { |
| return fill_type == CFX_FillRenderOptions::FillType::kEvenOdd |
| ? Gdiplus::FillModeAlternate |
| : Gdiplus::FillModeWinding; |
| } |
| |
| const CGdiplusExt& GetGdiplusExt() { |
| auto* pData = |
| static_cast<CWin32Platform*>(CFX_GEModule::Get()->GetPlatform()); |
| return pData->m_GdiplusExt; |
| } |
| |
| Gdiplus::GpBrush* GdipCreateBrushImpl(DWORD argb) { |
| const CGdiplusExt& GdiplusExt = GetGdiplusExt(); |
| Gdiplus::GpSolidFill* solidBrush = nullptr; |
| CallFunc(GdipCreateSolidFill)((Gdiplus::ARGB)argb, &solidBrush); |
| return solidBrush; |
| } |
| |
| void OutputImage(Gdiplus::GpGraphics* pGraphics, |
| const RetainPtr<CFX_DIBitmap>& pBitmap, |
| const FX_RECT& src_rect, |
| int dest_left, |
| int dest_top, |
| int dest_width, |
| int dest_height) { |
| int src_width = src_rect.Width(); |
| int src_height = src_rect.Height(); |
| const CGdiplusExt& GdiplusExt = GetGdiplusExt(); |
| if (pBitmap->GetBPP() == 1 && (src_rect.left % 8)) { |
| FX_RECT new_rect(0, 0, src_width, src_height); |
| RetainPtr<CFX_DIBitmap> pCloned = pBitmap->ClipTo(src_rect); |
| if (!pCloned) |
| return; |
| OutputImage(pGraphics, pCloned, new_rect, dest_left, dest_top, dest_width, |
| dest_height); |
| return; |
| } |
| int src_pitch = pBitmap->GetPitch(); |
| uint8_t* scan0 = pBitmap->GetBuffer() + src_rect.top * src_pitch + |
| pBitmap->GetBPP() * src_rect.left / 8; |
| Gdiplus::GpBitmap* bitmap = nullptr; |
| switch (pBitmap->GetFormat()) { |
| case FXDIB_Format::kArgb: |
| CallFunc(GdipCreateBitmapFromScan0)(src_width, src_height, src_pitch, |
| PixelFormat32bppARGB, scan0, &bitmap); |
| break; |
| case FXDIB_Format::kRgb32: |
| CallFunc(GdipCreateBitmapFromScan0)(src_width, src_height, src_pitch, |
| PixelFormat32bppRGB, scan0, &bitmap); |
| break; |
| case FXDIB_Format::kRgb: |
| CallFunc(GdipCreateBitmapFromScan0)(src_width, src_height, src_pitch, |
| PixelFormat24bppRGB, scan0, &bitmap); |
| break; |
| case FXDIB_Format::k8bppRgb: { |
| CallFunc(GdipCreateBitmapFromScan0)(src_width, src_height, src_pitch, |
| PixelFormat8bppIndexed, scan0, |
| &bitmap); |
| UINT pal[258]; |
| pal[0] = 0; |
| pal[1] = 256; |
| for (int i = 0; i < 256; i++) |
| pal[i + 2] = pBitmap->GetPaletteArgb(i); |
| CallFunc(GdipSetImagePalette)(bitmap, (Gdiplus::ColorPalette*)pal); |
| break; |
| } |
| case FXDIB_Format::k1bppRgb: { |
| CallFunc(GdipCreateBitmapFromScan0)(src_width, src_height, src_pitch, |
| PixelFormat1bppIndexed, scan0, |
| &bitmap); |
| break; |
| } |
| } |
| if (dest_height < 0) { |
| dest_height--; |
| } |
| if (dest_width < 0) { |
| dest_width--; |
| } |
| Gdiplus::Point destinationPoints[] = { |
| Gdiplus::Point(dest_left, dest_top), |
| Gdiplus::Point(dest_left + dest_width, dest_top), |
| Gdiplus::Point(dest_left, dest_top + dest_height)}; |
| CallFunc(GdipDrawImagePointsI)(pGraphics, bitmap, destinationPoints, 3); |
| CallFunc(GdipDisposeImage)(bitmap); |
| } |
| |
| Gdiplus::GpPen* GdipCreatePenImpl(const CFX_GraphStateData* pGraphState, |
| const CFX_Matrix* pMatrix, |
| DWORD argb, |
| bool bTextMode) { |
| const CGdiplusExt& GdiplusExt = GetGdiplusExt(); |
| float width = pGraphState->m_LineWidth; |
| if (!bTextMode) { |
| float unit = pMatrix |
| ? 1.0f / ((pMatrix->GetXUnit() + pMatrix->GetYUnit()) / 2) |
| : 1.0f; |
| width = std::max(width, unit); |
| } |
| Gdiplus::GpPen* pPen = nullptr; |
| CallFunc(GdipCreatePen1)((Gdiplus::ARGB)argb, width, Gdiplus::UnitWorld, |
| &pPen); |
| Gdiplus::LineCap lineCap = Gdiplus::LineCapFlat; |
| Gdiplus::DashCap dashCap = Gdiplus::DashCapFlat; |
| bool bDashExtend = false; |
| switch (pGraphState->m_LineCap) { |
| case CFX_GraphStateData::LineCap::kButt: |
| lineCap = Gdiplus::LineCapFlat; |
| break; |
| case CFX_GraphStateData::LineCap::kRound: |
| lineCap = Gdiplus::LineCapRound; |
| dashCap = Gdiplus::DashCapRound; |
| bDashExtend = true; |
| break; |
| case CFX_GraphStateData::LineCap::kSquare: |
| lineCap = Gdiplus::LineCapSquare; |
| bDashExtend = true; |
| break; |
| } |
| CallFunc(GdipSetPenLineCap197819)(pPen, lineCap, lineCap, dashCap); |
| Gdiplus::LineJoin lineJoin = Gdiplus::LineJoinMiterClipped; |
| switch (pGraphState->m_LineJoin) { |
| case CFX_GraphStateData::LineJoin::kMiter: |
| lineJoin = Gdiplus::LineJoinMiterClipped; |
| break; |
| case CFX_GraphStateData::LineJoin::kRound: |
| lineJoin = Gdiplus::LineJoinRound; |
| break; |
| case CFX_GraphStateData::LineJoin::kBevel: |
| lineJoin = Gdiplus::LineJoinBevel; |
| break; |
| } |
| CallFunc(GdipSetPenLineJoin)(pPen, lineJoin); |
| if (!pGraphState->m_DashArray.empty()) { |
| float* pDashArray = |
| FX_Alloc(float, FxAlignToBoundary<2>(pGraphState->m_DashArray.size())); |
| int nCount = 0; |
| float on_leftover = 0; |
| float off_leftover = 0; |
| for (size_t i = 0; i < pGraphState->m_DashArray.size(); i += 2) { |
| float on_phase = pGraphState->m_DashArray[i]; |
| float off_phase; |
| if (i == pGraphState->m_DashArray.size() - 1) |
| off_phase = on_phase; |
| else |
| off_phase = pGraphState->m_DashArray[i + 1]; |
| on_phase /= width; |
| off_phase /= width; |
| if (on_phase + off_phase <= 0.00002f) { |
| on_phase = 0.1f; |
| off_phase = 0.1f; |
| } |
| if (bDashExtend) { |
| if (off_phase < 1) |
| off_phase = 0; |
| else |
| --off_phase; |
| ++on_phase; |
| } |
| if (on_phase == 0 || off_phase == 0) { |
| if (nCount == 0) { |
| on_leftover += on_phase; |
| off_leftover += off_phase; |
| } else { |
| pDashArray[nCount - 2] += on_phase; |
| pDashArray[nCount - 1] += off_phase; |
| } |
| } else { |
| pDashArray[nCount++] = on_phase + on_leftover; |
| on_leftover = 0; |
| pDashArray[nCount++] = off_phase + off_leftover; |
| off_leftover = 0; |
| } |
| } |
| CallFunc(GdipSetPenDashArray)(pPen, pDashArray, nCount); |
| float phase = pGraphState->m_DashPhase; |
| if (bDashExtend) { |
| if (phase < 0.5f) |
| phase = 0; |
| else |
| phase -= 0.5f; |
| } |
| CallFunc(GdipSetPenDashOffset)(pPen, phase); |
| FX_Free(pDashArray); |
| pDashArray = nullptr; |
| } |
| CallFunc(GdipSetPenMiterLimit)(pPen, pGraphState->m_MiterLimit); |
| return pPen; |
| } |
| |
| absl::optional<std::pair<size_t, size_t>> IsSmallTriangle( |
| pdfium::span<const Gdiplus::PointF> points, |
| const CFX_Matrix* pMatrix) { |
| static constexpr size_t kPairs[3][2] = {{1, 2}, {0, 2}, {0, 1}}; |
| for (size_t i = 0; i < std::size(kPairs); ++i) { |
| size_t pair1 = kPairs[i][0]; |
| size_t pair2 = kPairs[i][1]; |
| |
| CFX_PointF p1(points[pair1].X, points[pair1].Y); |
| CFX_PointF p2(points[pair2].X, points[pair2].Y); |
| if (pMatrix) { |
| p1 = pMatrix->Transform(p1); |
| p2 = pMatrix->Transform(p2); |
| } |
| |
| CFX_PointF diff = p1 - p2; |
| float distance_square = (diff.x * diff.x) + (diff.y * diff.y); |
| if (distance_square < 2.25f) |
| return std::make_pair(i, pair1); |
| } |
| return absl::nullopt; |
| } |
| |
| class GpStream final : public IStream { |
| public: |
| GpStream() = default; |
| ~GpStream() = default; |
| |
| // IUnknown |
| HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, |
| void** ppvObject) override { |
| if (iid == __uuidof(IUnknown) || iid == __uuidof(IStream) || |
| iid == __uuidof(ISequentialStream)) { |
| *ppvObject = static_cast<IStream*>(this); |
| AddRef(); |
| return S_OK; |
| } |
| return E_NOINTERFACE; |
| } |
| ULONG STDMETHODCALLTYPE AddRef() override { |
| return (ULONG)InterlockedIncrement(&m_RefCount); |
| } |
| ULONG STDMETHODCALLTYPE Release() override { |
| ULONG res = (ULONG)InterlockedDecrement(&m_RefCount); |
| if (res == 0) { |
| delete this; |
| } |
| return res; |
| } |
| |
| // ISequentialStream |
| HRESULT STDMETHODCALLTYPE Read(void* output, |
| ULONG cb, |
| ULONG* pcbRead) override { |
| if (pcbRead) |
| *pcbRead = 0; |
| |
| if (m_ReadPos >= m_InterStream.tellp()) |
| return HRESULT_FROM_WIN32(ERROR_END_OF_MEDIA); |
| |
| size_t bytes_left = pdfium::base::checked_cast<size_t>( |
| std::streamoff(m_InterStream.tellp()) - m_ReadPos); |
| size_t bytes_out = |
| std::min(pdfium::base::checked_cast<size_t>(cb), bytes_left); |
| memcpy(output, m_InterStream.str().c_str() + m_ReadPos, bytes_out); |
| m_ReadPos += bytes_out; |
| if (pcbRead) |
| *pcbRead = (ULONG)bytes_out; |
| |
| return S_OK; |
| } |
| HRESULT STDMETHODCALLTYPE Write(const void* input, |
| ULONG cb, |
| ULONG* pcbWritten) override { |
| if (cb <= 0) { |
| if (pcbWritten) |
| *pcbWritten = 0; |
| return S_OK; |
| } |
| m_InterStream.write(reinterpret_cast<const char*>(input), cb); |
| if (pcbWritten) |
| *pcbWritten = cb; |
| return S_OK; |
| } |
| |
| // IStream |
| HRESULT STDMETHODCALLTYPE SetSize(ULARGE_INTEGER) override { |
| return E_NOTIMPL; |
| } |
| HRESULT STDMETHODCALLTYPE CopyTo(IStream*, |
| ULARGE_INTEGER, |
| ULARGE_INTEGER*, |
| ULARGE_INTEGER*) override { |
| return E_NOTIMPL; |
| } |
| HRESULT STDMETHODCALLTYPE Commit(DWORD) override { return E_NOTIMPL; } |
| HRESULT STDMETHODCALLTYPE Revert() override { return E_NOTIMPL; } |
| HRESULT STDMETHODCALLTYPE LockRegion(ULARGE_INTEGER, |
| ULARGE_INTEGER, |
| DWORD) override { |
| return E_NOTIMPL; |
| } |
| HRESULT STDMETHODCALLTYPE UnlockRegion(ULARGE_INTEGER, |
| ULARGE_INTEGER, |
| DWORD) override { |
| return E_NOTIMPL; |
| } |
| HRESULT STDMETHODCALLTYPE Clone(IStream** stream) override { |
| return E_NOTIMPL; |
| } |
| HRESULT STDMETHODCALLTYPE Seek(LARGE_INTEGER liDistanceToMove, |
| DWORD dwOrigin, |
| ULARGE_INTEGER* lpNewFilePointer) override { |
| std::streamoff start; |
| std::streamoff new_read_position; |
| switch (dwOrigin) { |
| case STREAM_SEEK_SET: |
| start = 0; |
| break; |
| case STREAM_SEEK_CUR: |
| start = m_ReadPos; |
| break; |
| case STREAM_SEEK_END: |
| if (m_InterStream.tellp() < 0) |
| return STG_E_SEEKERROR; |
| start = m_InterStream.tellp(); |
| break; |
| default: |
| return STG_E_INVALIDFUNCTION; |
| } |
| new_read_position = start + liDistanceToMove.QuadPart; |
| if (new_read_position > m_InterStream.tellp()) |
| return STG_E_SEEKERROR; |
| |
| m_ReadPos = new_read_position; |
| if (lpNewFilePointer) |
| lpNewFilePointer->QuadPart = m_ReadPos; |
| |
| return S_OK; |
| } |
| HRESULT STDMETHODCALLTYPE Stat(STATSTG* pStatstg, |
| DWORD grfStatFlag) override { |
| if (!pStatstg) |
| return STG_E_INVALIDFUNCTION; |
| |
| ZeroMemory(pStatstg, sizeof(STATSTG)); |
| |
| if (m_InterStream.tellp() < 0) |
| return STG_E_SEEKERROR; |
| |
| pStatstg->cbSize.QuadPart = m_InterStream.tellp(); |
| return S_OK; |
| } |
| |
| private: |
| LONG m_RefCount = 1; |
| std::streamoff m_ReadPos = 0; |
| fxcrt::ostringstream m_InterStream; |
| }; |
| |
| } // namespace |
| |
| CGdiplusExt::CGdiplusExt() = default; |
| |
| CGdiplusExt::~CGdiplusExt() { |
| FreeLibrary(m_GdiModule); |
| FreeLibrary(m_hModule); |
| } |
| |
| void CGdiplusExt::Load() { |
| char buf[MAX_PATH]; |
| GetSystemDirectoryA(buf, MAX_PATH); |
| ByteString dllpath = buf; |
| dllpath += "\\GDIPLUS.DLL"; |
| m_hModule = LoadLibraryA(dllpath.c_str()); |
| if (!m_hModule) |
| return; |
| |
| m_Functions.resize(std::size(g_GdipFuncNames)); |
| for (size_t i = 0; i < std::size(g_GdipFuncNames); ++i) { |
| m_Functions[i] = GetProcAddress(m_hModule, g_GdipFuncNames[i]); |
| if (!m_Functions[i]) { |
| m_hModule = nullptr; |
| return; |
| } |
| } |
| |
| ULONG_PTR gdiplus_token; |
| Gdiplus::GdiplusStartupInput gdiplus_startup_input; |
| ((FuncType_GdiplusStartup)m_Functions[FuncId_GdiplusStartup])( |
| &gdiplus_token, &gdiplus_startup_input, nullptr); |
| m_GdiModule = LoadLibraryA("GDI32.DLL"); |
| } |
| |
| bool CGdiplusExt::StretchDIBits(HDC hDC, |
| const RetainPtr<CFX_DIBitmap>& pBitmap, |
| int dest_left, |
| int dest_top, |
| int dest_width, |
| int dest_height, |
| const FX_RECT* pClipRect, |
| const FXDIB_ResampleOptions& options) { |
| Gdiplus::GpGraphics* pGraphics; |
| const CGdiplusExt& GdiplusExt = GetGdiplusExt(); |
| CallFunc(GdipCreateFromHDC)(hDC, &pGraphics); |
| CallFunc(GdipSetPageUnit)(pGraphics, Gdiplus::UnitPixel); |
| if (options.bNoSmoothing) { |
| CallFunc(GdipSetInterpolationMode)( |
| pGraphics, Gdiplus::InterpolationModeNearestNeighbor); |
| } else if (pBitmap->GetWidth() > abs(dest_width) / 2 || |
| pBitmap->GetHeight() > abs(dest_height) / 2) { |
| CallFunc(GdipSetInterpolationMode)(pGraphics, |
| Gdiplus::InterpolationModeHighQuality); |
| } else { |
| CallFunc(GdipSetInterpolationMode)(pGraphics, |
| Gdiplus::InterpolationModeBilinear); |
| } |
| FX_RECT src_rect(0, 0, pBitmap->GetWidth(), pBitmap->GetHeight()); |
| OutputImage(pGraphics, pBitmap, src_rect, dest_left, dest_top, dest_width, |
| dest_height); |
| CallFunc(GdipDeleteGraphics)(pGraphics); |
| CallFunc(GdipDeleteGraphics)(pGraphics); |
| return true; |
| } |
| |
| bool CGdiplusExt::DrawPath(HDC hDC, |
| const CFX_Path& path, |
| const CFX_Matrix* pObject2Device, |
| const CFX_GraphStateData* pGraphState, |
| uint32_t fill_argb, |
| uint32_t stroke_argb, |
| const CFX_FillRenderOptions& fill_options) { |
| pdfium::span<const CFX_Path::Point> points = path.GetPoints(); |
| if (points.empty()) |
| return true; |
| |
| Gdiplus::GpGraphics* pGraphics = nullptr; |
| const CGdiplusExt& GdiplusExt = GetGdiplusExt(); |
| CallFunc(GdipCreateFromHDC)(hDC, &pGraphics); |
| CallFunc(GdipSetPageUnit)(pGraphics, Gdiplus::UnitPixel); |
| CallFunc(GdipSetPixelOffsetMode)(pGraphics, Gdiplus::PixelOffsetModeHalf); |
| Gdiplus::GpMatrix* pMatrix = nullptr; |
| if (pObject2Device) { |
| CallFunc(GdipCreateMatrix2)(pObject2Device->a, pObject2Device->b, |
| pObject2Device->c, pObject2Device->d, |
| pObject2Device->e, pObject2Device->f, &pMatrix); |
| CallFunc(GdipSetWorldTransform)(pGraphics, pMatrix); |
| } |
| std::vector<Gdiplus::PointF> gp_points(points.size()); |
| std::vector<BYTE> gp_types(points.size()); |
| int nSubPathes = 0; |
| bool bSubClose = false; |
| bool bSmooth = false; |
| size_t pos_subclose = 0; |
| size_t startpoint = 0; |
| for (size_t i = 0; i < points.size(); ++i) { |
| gp_points[i].X = points[i].m_Point.x; |
| gp_points[i].Y = points[i].m_Point.y; |
| |
| CFX_PointF pos = points[i].m_Point; |
| if (pObject2Device) |
| pos = pObject2Device->Transform(pos); |
| |
| if (pos.x > 50000.0f) |
| gp_points[i].X = 50000.0f; |
| if (pos.x < -50000.0f) |
| gp_points[i].X = -50000.0f; |
| if (pos.y > 50000.0f) |
| gp_points[i].Y = 50000.0f; |
| if (pos.y < -50000.0f) |
| gp_points[i].Y = -50000.0f; |
| |
| CFX_Path::Point::Type point_type = points[i].m_Type; |
| if (point_type == CFX_Path::Point::Type::kMove) { |
| gp_types[i] = Gdiplus::PathPointTypeStart; |
| nSubPathes++; |
| bSubClose = false; |
| startpoint = i; |
| } else if (point_type == CFX_Path::Point::Type::kLine) { |
| gp_types[i] = Gdiplus::PathPointTypeLine; |
| if (points[i - 1].IsTypeAndOpen(CFX_Path::Point::Type::kMove) && |
| (i == points.size() - 1 || |
| points[i + 1].IsTypeAndOpen(CFX_Path::Point::Type::kMove)) && |
| gp_points[i].Y == gp_points[i - 1].Y && |
| gp_points[i].X == gp_points[i - 1].X) { |
| gp_points[i].X += 0.01f; |
| continue; |
| } |
| if (!bSmooth && gp_points[i].X != gp_points[i - 1].X && |
| gp_points[i].Y != gp_points[i - 1].Y) { |
| bSmooth = true; |
| } |
| } else if (point_type == CFX_Path::Point::Type::kBezier) { |
| gp_types[i] = Gdiplus::PathPointTypeBezier; |
| bSmooth = true; |
| } |
| if (points[i].m_CloseFigure) { |
| if (bSubClose) |
| gp_types[pos_subclose] &= ~Gdiplus::PathPointTypeCloseSubpath; |
| else |
| bSubClose = true; |
| pos_subclose = i; |
| gp_types[i] |= Gdiplus::PathPointTypeCloseSubpath; |
| if (!bSmooth && gp_points[i].X != gp_points[startpoint].X && |
| gp_points[i].Y != gp_points[startpoint].Y) { |
| bSmooth = true; |
| } |
| } |
| } |
| const bool fill = |
| fill_options.fill_type != CFX_FillRenderOptions::FillType::kNoFill; |
| if (fill_options.aliased_path) { |
| bSmooth = false; |
| CallFunc(GdipSetSmoothingMode)(pGraphics, Gdiplus::SmoothingModeNone); |
| } else if (!fill_options.full_cover) { |
| if (!bSmooth && fill) |
| bSmooth = true; |
| |
| if (bSmooth || (pGraphState && pGraphState->m_LineWidth > 2)) { |
| CallFunc(GdipSetSmoothingMode)(pGraphics, |
| Gdiplus::SmoothingModeAntiAlias); |
| } |
| } |
| if (points.size() == 4 && !pGraphState) { |
| auto indices = IsSmallTriangle(gp_points, pObject2Device); |
| if (indices.has_value()) { |
| size_t v1; |
| size_t v2; |
| std::tie(v1, v2) = indices.value(); |
| Gdiplus::GpPen* pPen = nullptr; |
| CallFunc(GdipCreatePen1)(fill_argb, 1.0f, Gdiplus::UnitPixel, &pPen); |
| CallFunc(GdipDrawLineI)(pGraphics, pPen, FXSYS_roundf(gp_points[v1].X), |
| FXSYS_roundf(gp_points[v1].Y), |
| FXSYS_roundf(gp_points[v2].X), |
| FXSYS_roundf(gp_points[v2].Y)); |
| CallFunc(GdipDeletePen)(pPen); |
| return true; |
| } |
| } |
| Gdiplus::GpPath* pGpPath = nullptr; |
| const Gdiplus::GpFillMode gp_fill_mode = |
| FillType2Gdip(fill_options.fill_type); |
| CallFunc(GdipCreatePath2)(gp_points.data(), gp_types.data(), |
| pdfium::base::checked_cast<int>(points.size()), |
| gp_fill_mode, &pGpPath); |
| if (!pGpPath) { |
| if (pMatrix) |
| CallFunc(GdipDeleteMatrix)(pMatrix); |
| |
| CallFunc(GdipDeleteGraphics)(pGraphics); |
| return false; |
| } |
| if (fill) { |
| Gdiplus::GpBrush* pBrush = GdipCreateBrushImpl(fill_argb); |
| CallFunc(GdipSetPathFillMode)(pGpPath, gp_fill_mode); |
| CallFunc(GdipFillPath)(pGraphics, pBrush, pGpPath); |
| CallFunc(GdipDeleteBrush)(pBrush); |
| } |
| if (pGraphState && stroke_argb) { |
| Gdiplus::GpPen* pPen = |
| GdipCreatePenImpl(pGraphState, pObject2Device, stroke_argb, |
| fill_options.stroke_text_mode); |
| if (nSubPathes == 1) { |
| CallFunc(GdipDrawPath)(pGraphics, pPen, pGpPath); |
| } else { |
| size_t iStart = 0; |
| for (size_t i = 0; i < points.size(); ++i) { |
| if (i == points.size() - 1 || |
| gp_types[i + 1] == Gdiplus::PathPointTypeStart) { |
| Gdiplus::GpPath* pSubPath; |
| CallFunc(GdipCreatePath2)( |
| &gp_points[iStart], &gp_types[iStart], |
| pdfium::base::checked_cast<int>(i - iStart + 1), gp_fill_mode, |
| &pSubPath); |
| iStart = i + 1; |
| CallFunc(GdipDrawPath)(pGraphics, pPen, pSubPath); |
| CallFunc(GdipDeletePath)(pSubPath); |
| } |
| } |
| } |
| CallFunc(GdipDeletePen)(pPen); |
| } |
| if (pMatrix) |
| CallFunc(GdipDeleteMatrix)(pMatrix); |
| CallFunc(GdipDeletePath)(pGpPath); |
| CallFunc(GdipDeleteGraphics)(pGraphics); |
| return true; |
| } |
