| // 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/include/fx_ge.h" |
| |
| #if _FX_OS_ == _FX_WIN32_DESKTOP_ || _FX_OS_ == _FX_WIN64_DESKTOP_ |
| |
| #include <windows.h> |
| |
| #include "core/fxge/dib/dib_int.h" |
| #include "core/fxge/ge/fx_text_int.h" |
| #include "core/fxge/include/fx_freetype.h" |
| #include "core/fxge/include/fx_ge_win32.h" |
| #include "core/fxge/win32/win32_int.h" |
| |
| namespace { |
| |
| CFX_DIBitmap* Transform1bppBitmap(const CFX_DIBSource* pSrc, |
| const CFX_Matrix* pDestMatrix) { |
| ASSERT(pSrc->GetFormat() == FXDIB_1bppRgb || |
| pSrc->GetFormat() == FXDIB_1bppMask || |
| pSrc->GetFormat() == FXDIB_1bppCmyk); |
| CFX_DIBExtractor src_bitmap(pSrc); |
| CFX_DIBitmap* pSrcBitmap = src_bitmap; |
| if (!pSrcBitmap) |
| return nullptr; |
| |
| int src_width = pSrcBitmap->GetWidth(), src_height = pSrcBitmap->GetHeight(); |
| uint8_t* src_buf = pSrcBitmap->GetBuffer(); |
| uint32_t src_pitch = pSrcBitmap->GetPitch(); |
| FX_FLOAT dest_area = pDestMatrix->GetUnitArea(); |
| FX_FLOAT area_scale = ((FX_FLOAT)(src_width * src_height)) / dest_area; |
| FX_FLOAT size_scale = FXSYS_sqrt(area_scale); |
| CFX_Matrix adjusted_matrix(*pDestMatrix); |
| adjusted_matrix.Scale(size_scale, size_scale); |
| CFX_FloatRect result_rect_f = adjusted_matrix.GetUnitRect(); |
| FX_RECT result_rect = result_rect_f.GetOutterRect(); |
| CFX_Matrix src2result; |
| src2result.e = adjusted_matrix.c + adjusted_matrix.e; |
| src2result.f = adjusted_matrix.d + adjusted_matrix.f; |
| src2result.a = adjusted_matrix.a / pSrcBitmap->GetWidth(); |
| src2result.b = adjusted_matrix.b / pSrcBitmap->GetWidth(); |
| src2result.c = -adjusted_matrix.c / pSrcBitmap->GetHeight(); |
| src2result.d = -adjusted_matrix.d / pSrcBitmap->GetHeight(); |
| src2result.TranslateI(-result_rect.left, -result_rect.top); |
| CFX_Matrix result2src; |
| result2src.SetReverse(src2result); |
| CPDF_FixedMatrix result2src_fix(result2src, 8); |
| int result_width = result_rect.Width(); |
| int result_height = result_rect.Height(); |
| std::unique_ptr<CFX_DIBitmap> pTempBitmap(new CFX_DIBitmap); |
| if (!pTempBitmap->Create(result_width, result_height, pSrc->GetFormat())) { |
| if (pSrcBitmap != src_bitmap) |
| delete pSrcBitmap; |
| return nullptr; |
| } |
| |
| pTempBitmap->CopyPalette(pSrc->GetPalette()); |
| uint8_t* dest_buf = pTempBitmap->GetBuffer(); |
| int dest_pitch = pTempBitmap->GetPitch(); |
| FXSYS_memset(dest_buf, pSrc->IsAlphaMask() ? 0 : 0xff, |
| dest_pitch * result_height); |
| if (pSrcBitmap->IsAlphaMask()) { |
| for (int dest_y = 0; dest_y < result_height; dest_y++) { |
| uint8_t* dest_scan = dest_buf + dest_y * dest_pitch; |
| for (int dest_x = 0; dest_x < result_width; dest_x++) { |
| int src_x, src_y; |
| result2src_fix.Transform(dest_x, dest_y, src_x, src_y); |
| if (src_x < 0 || src_x >= src_width || src_y < 0 || |
| src_y >= src_height) { |
| continue; |
| } |
| if (!((src_buf + src_pitch * src_y)[src_x / 8] & |
| (1 << (7 - src_x % 8)))) { |
| continue; |
| } |
| dest_scan[dest_x / 8] |= 1 << (7 - dest_x % 8); |
| } |
| } |
| } else { |
| for (int dest_y = 0; dest_y < result_height; dest_y++) { |
| uint8_t* dest_scan = dest_buf + dest_y * dest_pitch; |
| for (int dest_x = 0; dest_x < result_width; dest_x++) { |
| int src_x, src_y; |
| result2src_fix.Transform(dest_x, dest_y, src_x, src_y); |
| if (src_x < 0 || src_x >= src_width || src_y < 0 || |
| src_y >= src_height) { |
| continue; |
| } |
| if ((src_buf + src_pitch * src_y)[src_x / 8] & (1 << (7 - src_x % 8))) { |
| continue; |
| } |
| dest_scan[dest_x / 8] &= ~(1 << (7 - dest_x % 8)); |
| } |
| } |
| } |
| if (pSrcBitmap != src_bitmap) |
| delete pSrcBitmap; |
| |
| return pTempBitmap.release(); |
| } |
| |
| } // namespace |
| |
| CGdiPrinterDriver::CGdiPrinterDriver(HDC hDC) |
| : CGdiDeviceDriver(hDC, FXDC_PRINTER), |
| m_HorzSize(::GetDeviceCaps(m_hDC, HORZSIZE)), |
| m_VertSize(::GetDeviceCaps(m_hDC, VERTSIZE)) {} |
| |
| CGdiPrinterDriver::~CGdiPrinterDriver() {} |
| |
| int CGdiPrinterDriver::GetDeviceCaps(int caps_id) { |
| if (caps_id == FXDC_HORZ_SIZE) |
| return m_HorzSize; |
| if (caps_id == FXDC_VERT_SIZE) |
| return m_VertSize; |
| return CGdiDeviceDriver::GetDeviceCaps(caps_id); |
| } |
| |
| FX_BOOL CGdiPrinterDriver::SetDIBits(const CFX_DIBSource* pSource, |
| uint32_t color, |
| const FX_RECT* pSrcRect, |
| int left, |
| int top, |
| int blend_type, |
| int alpha_flag, |
| void* pIccTransform) { |
| if (pSource->IsAlphaMask()) { |
| FX_RECT clip_rect(left, top, left + pSrcRect->Width(), |
| top + pSrcRect->Height()); |
| return StretchDIBits(pSource, color, left - pSrcRect->left, |
| top - pSrcRect->top, pSource->GetWidth(), |
| pSource->GetHeight(), &clip_rect, 0, alpha_flag, |
| pIccTransform, FXDIB_BLEND_NORMAL); |
| } |
| ASSERT(pSource && !pSource->IsAlphaMask() && pSrcRect); |
| ASSERT(blend_type == FXDIB_BLEND_NORMAL); |
| if (pSource->HasAlpha()) |
| return FALSE; |
| |
| CFX_DIBExtractor temp(pSource); |
| CFX_DIBitmap* pBitmap = temp; |
| if (!pBitmap) |
| return FALSE; |
| |
| return GDI_SetDIBits(pBitmap, pSrcRect, left, top, pIccTransform); |
| } |
| |
| FX_BOOL CGdiPrinterDriver::StretchDIBits(const CFX_DIBSource* pSource, |
| uint32_t color, |
| int dest_left, |
| int dest_top, |
| int dest_width, |
| int dest_height, |
| const FX_RECT* pClipRect, |
| uint32_t flags, |
| int alpha_flag, |
| void* pIccTransform, |
| int blend_type) { |
| if (pSource->IsAlphaMask()) { |
| int alpha = FXGETFLAG_COLORTYPE(alpha_flag) |
| ? FXGETFLAG_ALPHA_FILL(alpha_flag) |
| : FXARGB_A(color); |
| if (pSource->GetBPP() != 1 || alpha != 255) |
| return FALSE; |
| |
| if (dest_width < 0 || dest_height < 0) { |
| std::unique_ptr<CFX_DIBitmap> pFlipped( |
| pSource->FlipImage(dest_width < 0, dest_height < 0)); |
| if (!pFlipped) |
| return FALSE; |
| |
| if (dest_width < 0) |
| dest_left += dest_width; |
| if (dest_height < 0) |
| dest_top += dest_height; |
| |
| return GDI_StretchBitMask(pFlipped.get(), dest_left, dest_top, |
| abs(dest_width), abs(dest_height), color, flags, |
| alpha_flag, pIccTransform); |
| } |
| |
| CFX_DIBExtractor temp(pSource); |
| CFX_DIBitmap* pBitmap = temp; |
| if (!pBitmap) |
| return FALSE; |
| return GDI_StretchBitMask(pBitmap, dest_left, dest_top, dest_width, |
| dest_height, color, flags, alpha_flag, |
| pIccTransform); |
| } |
| |
| if (pSource->HasAlpha()) |
| return FALSE; |
| |
| if (dest_width < 0 || dest_height < 0) { |
| std::unique_ptr<CFX_DIBitmap> pFlipped( |
| pSource->FlipImage(dest_width < 0, dest_height < 0)); |
| if (!pFlipped) |
| return FALSE; |
| |
| if (dest_width < 0) |
| dest_left += dest_width; |
| if (dest_height < 0) |
| dest_top += dest_height; |
| |
| return GDI_StretchDIBits(pFlipped.get(), dest_left, dest_top, |
| abs(dest_width), abs(dest_height), flags, |
| pIccTransform); |
| } |
| |
| CFX_DIBExtractor temp(pSource); |
| CFX_DIBitmap* pBitmap = temp; |
| if (!pBitmap) |
| return FALSE; |
| return GDI_StretchDIBits(pBitmap, dest_left, dest_top, dest_width, |
| dest_height, flags, pIccTransform); |
| } |
| |
| FX_BOOL CGdiPrinterDriver::StartDIBits(const CFX_DIBSource* pSource, |
| int bitmap_alpha, |
| uint32_t color, |
| const CFX_Matrix* pMatrix, |
| uint32_t render_flags, |
| void*& handle, |
| int alpha_flag, |
| void* pIccTransform, |
| int blend_type) { |
| if (bitmap_alpha < 255 || pSource->HasAlpha() || |
| (pSource->IsAlphaMask() && (pSource->GetBPP() != 1))) { |
| return FALSE; |
| } |
| CFX_FloatRect unit_rect = pMatrix->GetUnitRect(); |
| FX_RECT full_rect = unit_rect.GetOutterRect(); |
| if (FXSYS_fabs(pMatrix->b) < 0.5f && pMatrix->a != 0 && |
| FXSYS_fabs(pMatrix->c) < 0.5f && pMatrix->d != 0) { |
| FX_BOOL bFlipX = pMatrix->a < 0; |
| FX_BOOL bFlipY = pMatrix->d > 0; |
| return StretchDIBits(pSource, color, |
| bFlipX ? full_rect.right : full_rect.left, |
| bFlipY ? full_rect.bottom : full_rect.top, |
| bFlipX ? -full_rect.Width() : full_rect.Width(), |
| bFlipY ? -full_rect.Height() : full_rect.Height(), |
| nullptr, 0, alpha_flag, pIccTransform, blend_type); |
| } |
| if (FXSYS_fabs(pMatrix->a) < 0.5f && FXSYS_fabs(pMatrix->d) < 0.5f) { |
| std::unique_ptr<CFX_DIBitmap> pTransformed( |
| pSource->SwapXY(pMatrix->c > 0, pMatrix->b < 0)); |
| if (!pTransformed) |
| return FALSE; |
| |
| return StretchDIBits(pTransformed.get(), color, full_rect.left, |
| full_rect.top, full_rect.Width(), full_rect.Height(), |
| nullptr, 0, alpha_flag, pIccTransform, blend_type); |
| } |
| if (pSource->GetBPP() != 1) |
| return FALSE; |
| |
| std::unique_ptr<CFX_DIBitmap> pTransformed( |
| Transform1bppBitmap(pSource, pMatrix)); |
| if (!pIccTransform) |
| return FALSE; |
| |
| SaveState(); |
| CFX_PathData path; |
| path.AppendRect(0, 0, 1.0f, 1.0f); |
| SetClip_PathFill(&path, pMatrix, WINDING); |
| FX_BOOL ret = |
| StretchDIBits(pTransformed.get(), color, full_rect.left, full_rect.top, |
| full_rect.Width(), full_rect.Height(), nullptr, 0, |
| alpha_flag, pIccTransform, blend_type); |
| RestoreState(false); |
| handle = nullptr; |
| return ret; |
| } |
| |
| #endif |
