| // 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/agg/fx_agg_driver.h" |
| |
| #include <algorithm> |
| #include <utility> |
| |
| #include "core/fxge/cfx_cliprgn.h" |
| #include "core/fxge/cfx_defaultrenderdevice.h" |
| #include "core/fxge/cfx_graphstatedata.h" |
| #include "core/fxge/cfx_pathdata.h" |
| #include "core/fxge/dib/cfx_imagerenderer.h" |
| #include "core/fxge/dib/cfx_imagestretcher.h" |
| #include "third_party/base/ptr_util.h" |
| #include "third_party/base/stl_util.h" |
| |
| // Ignore fallthrough warnings in agg23 headers. |
| #if defined(__clang__) |
| #pragma GCC diagnostic push |
| #pragma GCC diagnostic ignored "-Wimplicit-fallthrough" |
| #endif |
| #include "third_party/agg23/agg_conv_dash.h" |
| #include "third_party/agg23/agg_conv_stroke.h" |
| #include "third_party/agg23/agg_curves.h" |
| #include "third_party/agg23/agg_path_storage.h" |
| #include "third_party/agg23/agg_pixfmt_gray.h" |
| #include "third_party/agg23/agg_rasterizer_scanline_aa.h" |
| #include "third_party/agg23/agg_renderer_scanline.h" |
| #include "third_party/agg23/agg_scanline_u.h" |
| #if defined(__clang__) |
| #pragma GCC diagnostic pop |
| #endif |
| |
| namespace { |
| |
| const float kMaxPos = 32000.0f; |
| |
| CFX_PointF HardClip(const CFX_PointF& pos) { |
| return CFX_PointF(pdfium::clamp(pos.x, -kMaxPos, kMaxPos), |
| pdfium::clamp(pos.y, -kMaxPos, kMaxPos)); |
| } |
| |
| void RgbByteOrderSetPixel(const RetainPtr<CFX_DIBitmap>& pBitmap, |
| int x, |
| int y, |
| uint32_t argb) { |
| if (x < 0 || x >= pBitmap->GetWidth() || y < 0 || y >= pBitmap->GetHeight()) |
| return; |
| |
| uint8_t* pos = pBitmap->GetBuffer() + y * pBitmap->GetPitch() + |
| x * pBitmap->GetBPP() / 8; |
| if (pBitmap->GetFormat() == FXDIB_Argb) { |
| FXARGB_SETRGBORDERDIB(pos, argb); |
| return; |
| } |
| |
| int alpha = FXARGB_A(argb); |
| pos[0] = (FXARGB_R(argb) * alpha + pos[0] * (255 - alpha)) / 255; |
| pos[1] = (FXARGB_G(argb) * alpha + pos[1] * (255 - alpha)) / 255; |
| pos[2] = (FXARGB_B(argb) * alpha + pos[2] * (255 - alpha)) / 255; |
| } |
| |
| void RgbByteOrderCompositeRect(const RetainPtr<CFX_DIBitmap>& pBitmap, |
| int left, |
| int top, |
| int width, |
| int height, |
| FX_ARGB argb) { |
| int src_alpha = FXARGB_A(argb); |
| if (src_alpha == 0) |
| return; |
| |
| FX_RECT rect(left, top, left + width, top + height); |
| rect.Intersect(0, 0, pBitmap->GetWidth(), pBitmap->GetHeight()); |
| width = rect.Width(); |
| int src_r = FXARGB_R(argb); |
| int src_g = FXARGB_G(argb); |
| int src_b = FXARGB_B(argb); |
| int Bpp = pBitmap->GetBPP() / 8; |
| int dib_argb = FXARGB_TOBGRORDERDIB(argb); |
| uint8_t* pBuffer = pBitmap->GetBuffer(); |
| if (src_alpha == 255) { |
| for (int row = rect.top; row < rect.bottom; row++) { |
| uint8_t* dest_scan = |
| pBuffer + row * pBitmap->GetPitch() + rect.left * Bpp; |
| if (Bpp == 4) { |
| uint32_t* scan = reinterpret_cast<uint32_t*>(dest_scan); |
| for (int col = 0; col < width; col++) |
| *scan++ = dib_argb; |
| } else { |
| for (int col = 0; col < width; col++) { |
| *dest_scan++ = src_r; |
| *dest_scan++ = src_g; |
| *dest_scan++ = src_b; |
| } |
| } |
| } |
| return; |
| } |
| bool bAlpha = pBitmap->HasAlpha(); |
| for (int row = rect.top; row < rect.bottom; row++) { |
| uint8_t* dest_scan = pBuffer + row * pBitmap->GetPitch() + rect.left * Bpp; |
| if (bAlpha) { |
| for (int col = 0; col < width; col++) { |
| uint8_t back_alpha = dest_scan[3]; |
| if (back_alpha == 0) { |
| FXARGB_SETRGBORDERDIB(dest_scan, |
| ArgbEncode(src_alpha, src_r, src_g, src_b)); |
| dest_scan += 4; |
| continue; |
| } |
| uint8_t dest_alpha = |
| back_alpha + src_alpha - back_alpha * src_alpha / 255; |
| dest_scan[3] = dest_alpha; |
| int alpha_ratio = src_alpha * 255 / dest_alpha; |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, src_r, alpha_ratio); |
| dest_scan++; |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, src_g, alpha_ratio); |
| dest_scan++; |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, src_b, alpha_ratio); |
| dest_scan += 2; |
| } |
| continue; |
| } |
| for (int col = 0; col < width; col++) { |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, src_r, src_alpha); |
| dest_scan++; |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, src_g, src_alpha); |
| dest_scan++; |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, src_b, src_alpha); |
| dest_scan++; |
| if (Bpp == 4) |
| dest_scan++; |
| } |
| } |
| } |
| |
| void RgbByteOrderTransferBitmap(const RetainPtr<CFX_DIBitmap>& pBitmap, |
| int dest_left, |
| int dest_top, |
| int width, |
| int height, |
| const RetainPtr<CFX_DIBBase>& pSrcBitmap, |
| int src_left, |
| int src_top) { |
| if (!pBitmap) |
| return; |
| |
| pBitmap->GetOverlapRect(dest_left, dest_top, width, height, |
| pSrcBitmap->GetWidth(), pSrcBitmap->GetHeight(), |
| src_left, src_top, nullptr); |
| if (width == 0 || height == 0) |
| return; |
| |
| int Bpp = pBitmap->GetBPP() / 8; |
| FXDIB_Format dest_format = pBitmap->GetFormat(); |
| FXDIB_Format src_format = pSrcBitmap->GetFormat(); |
| int pitch = pBitmap->GetPitch(); |
| uint8_t* buffer = pBitmap->GetBuffer(); |
| if (dest_format == src_format) { |
| for (int row = 0; row < height; row++) { |
| uint8_t* dest_scan = buffer + (dest_top + row) * pitch + dest_left * Bpp; |
| const uint8_t* src_scan = |
| pSrcBitmap->GetScanline(src_top + row) + src_left * Bpp; |
| if (Bpp == 4) { |
| for (int col = 0; col < width; col++) { |
| FXARGB_SETDIB(dest_scan, ArgbEncode(src_scan[3], src_scan[0], |
| src_scan[1], src_scan[2])); |
| dest_scan += 4; |
| src_scan += 4; |
| } |
| continue; |
| } |
| for (int col = 0; col < width; col++) { |
| *dest_scan++ = src_scan[2]; |
| *dest_scan++ = src_scan[1]; |
| *dest_scan++ = src_scan[0]; |
| src_scan += 3; |
| } |
| } |
| return; |
| } |
| |
| uint8_t* dest_buf = buffer + dest_top * pitch + dest_left * Bpp; |
| if (dest_format == FXDIB_Rgb) { |
| ASSERT(src_format == FXDIB_Rgb32); |
| for (int row = 0; row < height; row++) { |
| uint8_t* dest_scan = dest_buf + row * pitch; |
| const uint8_t* src_scan = |
| pSrcBitmap->GetScanline(src_top + row) + src_left * 4; |
| for (int col = 0; col < width; col++) { |
| *dest_scan++ = src_scan[2]; |
| *dest_scan++ = src_scan[1]; |
| *dest_scan++ = src_scan[0]; |
| src_scan += 4; |
| } |
| } |
| return; |
| } |
| |
| ASSERT(dest_format == FXDIB_Argb || dest_format == FXDIB_Rgb32); |
| if (src_format == FXDIB_Rgb) { |
| for (int row = 0; row < height; row++) { |
| uint8_t* dest_scan = dest_buf + row * pitch; |
| const uint8_t* src_scan = |
| pSrcBitmap->GetScanline(src_top + row) + src_left * 3; |
| for (int col = 0; col < width; col++) { |
| FXARGB_SETDIB(dest_scan, |
| ArgbEncode(0xff, src_scan[0], src_scan[1], src_scan[2])); |
| dest_scan += 4; |
| src_scan += 3; |
| } |
| } |
| return; |
| } |
| if (src_format != FXDIB_Rgb32) |
| return; |
| ASSERT(dest_format == FXDIB_Argb); |
| for (int row = 0; row < height; row++) { |
| uint8_t* dest_scan = dest_buf + row * pitch; |
| const uint8_t* src_scan = |
| pSrcBitmap->GetScanline(src_top + row) + src_left * 4; |
| for (int col = 0; col < width; col++) { |
| FXARGB_SETDIB(dest_scan, |
| ArgbEncode(0xff, src_scan[0], src_scan[1], src_scan[2])); |
| src_scan += 4; |
| dest_scan += 4; |
| } |
| } |
| } |
| |
| bool DibSetPixel(const RetainPtr<CFX_DIBitmap>& pDevice, |
| int x, |
| int y, |
| uint32_t color) { |
| int alpha = FXARGB_A(color); |
| if (pDevice->IsCmykImage()) |
| return false; |
| |
| pDevice->SetPixel(x, y, color); |
| if (pDevice->m_pAlphaMask) |
| pDevice->m_pAlphaMask->SetPixel(x, y, alpha << 24); |
| return true; |
| } |
| |
| void RasterizeStroke(agg::rasterizer_scanline_aa* rasterizer, |
| agg::path_storage* path_data, |
| const CFX_Matrix* pObject2Device, |
| const CFX_GraphStateData* pGraphState, |
| float scale, |
| bool bStrokeAdjust, |
| bool bTextMode) { |
| agg::line_cap_e cap; |
| switch (pGraphState->m_LineCap) { |
| case CFX_GraphStateData::LineCapRound: |
| cap = agg::round_cap; |
| break; |
| case CFX_GraphStateData::LineCapSquare: |
| cap = agg::square_cap; |
| break; |
| default: |
| cap = agg::butt_cap; |
| break; |
| } |
| agg::line_join_e join; |
| switch (pGraphState->m_LineJoin) { |
| case CFX_GraphStateData::LineJoinRound: |
| join = agg::round_join; |
| break; |
| case CFX_GraphStateData::LineJoinBevel: |
| join = agg::bevel_join; |
| break; |
| default: |
| join = agg::miter_join_revert; |
| break; |
| } |
| float width = pGraphState->m_LineWidth * scale; |
| float unit = 1.0f; |
| if (pObject2Device) { |
| unit = |
| 1.0f / ((pObject2Device->GetXUnit() + pObject2Device->GetYUnit()) / 2); |
| } |
| width = std::max(width, unit); |
| if (!pGraphState->m_DashArray.empty()) { |
| typedef agg::conv_dash<agg::path_storage> dash_converter; |
| dash_converter dash(*path_data); |
| for (size_t i = 0; i < (pGraphState->m_DashArray.size() + 1) / 2; i++) { |
| float on = pGraphState->m_DashArray[i * 2]; |
| if (on <= 0.000001f) |
| on = 1.0f / 10; |
| float off = i * 2 + 1 == pGraphState->m_DashArray.size() |
| ? on |
| : pGraphState->m_DashArray[i * 2 + 1]; |
| off = std::max(off, 0.0f); |
| dash.add_dash(on * scale, off * scale); |
| } |
| dash.dash_start(pGraphState->m_DashPhase * scale); |
| typedef agg::conv_stroke<dash_converter> dash_stroke; |
| dash_stroke stroke(dash); |
| stroke.line_join(join); |
| stroke.line_cap(cap); |
| stroke.miter_limit(pGraphState->m_MiterLimit); |
| stroke.width(width); |
| rasterizer->add_path_transformed(stroke, pObject2Device); |
| return; |
| } |
| agg::conv_stroke<agg::path_storage> stroke(*path_data); |
| stroke.line_join(join); |
| stroke.line_cap(cap); |
| stroke.miter_limit(pGraphState->m_MiterLimit); |
| stroke.width(width); |
| rasterizer->add_path_transformed(stroke, pObject2Device); |
| } |
| |
| class CFX_Renderer { |
| public: |
| // Needed for agg caller |
| void prepare(unsigned) {} |
| |
| void CompositeSpan(uint8_t* dest_scan, |
| uint8_t* backdrop_scan, |
| int Bpp, |
| bool bDestAlpha, |
| int span_left, |
| int span_len, |
| uint8_t* cover_scan, |
| int clip_left, |
| int clip_right, |
| uint8_t* clip_scan); |
| |
| void CompositeSpan1bpp(uint8_t* dest_scan, |
| int Bpp, |
| int span_left, |
| int span_len, |
| uint8_t* cover_scan, |
| int clip_left, |
| int clip_right, |
| uint8_t* clip_scan, |
| uint8_t* dest_extra_alpha_scan); |
| |
| void CompositeSpanGray(uint8_t* dest_scan, |
| int Bpp, |
| int span_left, |
| int span_len, |
| uint8_t* cover_scan, |
| int clip_left, |
| int clip_right, |
| uint8_t* clip_scan, |
| uint8_t* dest_extra_alpha_scan); |
| |
| void CompositeSpanARGB(uint8_t* dest_scan, |
| int Bpp, |
| int span_left, |
| int span_len, |
| uint8_t* cover_scan, |
| int clip_left, |
| int clip_right, |
| uint8_t* clip_scan, |
| uint8_t* dest_extra_alpha_scan); |
| |
| void CompositeSpanRGB(uint8_t* dest_scan, |
| int Bpp, |
| int span_left, |
| int span_len, |
| uint8_t* cover_scan, |
| int clip_left, |
| int clip_right, |
| uint8_t* clip_scan, |
| uint8_t* dest_extra_alpha_scan); |
| |
| void CompositeSpanCMYK(uint8_t* dest_scan, |
| int Bpp, |
| int span_left, |
| int span_len, |
| uint8_t* cover_scan, |
| int clip_left, |
| int clip_right, |
| uint8_t* clip_scan, |
| uint8_t* dest_extra_alpha_scan); |
| |
| bool Init(const RetainPtr<CFX_DIBitmap>& pDevice, |
| const RetainPtr<CFX_DIBitmap>& pBackdropDevice, |
| const CFX_ClipRgn* pClipRgn, |
| uint32_t color, |
| bool bFullCover, |
| bool bRgbByteOrder); |
| |
| template <class Scanline> |
| void render(const Scanline& sl); |
| |
| private: |
| void (CFX_Renderer::*composite_span)(uint8_t*, |
| int, |
| int, |
| int, |
| uint8_t*, |
| int, |
| int, |
| uint8_t*, |
| uint8_t*); |
| |
| void CompositeSpan1bppHelper(uint8_t* dest_scan, |
| int col_start, |
| int col_end, |
| const uint8_t* cover_scan, |
| const uint8_t* clip_scan, |
| int span_left); |
| |
| inline int GetSrcAlpha(const uint8_t* clip_scan, int col) const { |
| return clip_scan ? m_Alpha * clip_scan[col] / 255 : m_Alpha; |
| } |
| |
| inline int GetSourceAlpha(const uint8_t* cover_scan, |
| const uint8_t* clip_scan, |
| int col) const { |
| return clip_scan ? m_Alpha * cover_scan[col] * clip_scan[col] / 255 / 255 |
| : m_Alpha * cover_scan[col] / 255; |
| } |
| |
| inline int GetColStart(int span_left, int clip_left) const { |
| return span_left < clip_left ? clip_left - span_left : 0; |
| } |
| |
| inline int GetColEnd(int span_left, int span_len, int clip_right) const { |
| return span_left + span_len < clip_right ? span_len |
| : clip_right - span_left; |
| } |
| |
| int m_Alpha; |
| int m_Red; |
| int m_Green; |
| int m_Blue; |
| int m_Gray; |
| uint32_t m_Color; |
| bool m_bFullCover; |
| bool m_bRgbByteOrder; |
| FX_RECT m_ClipBox; |
| RetainPtr<CFX_DIBitmap> m_pBackdropDevice; |
| RetainPtr<CFX_DIBitmap> m_pClipMask; |
| RetainPtr<CFX_DIBitmap> m_pDevice; |
| UnownedPtr<const CFX_ClipRgn> m_pClipRgn; |
| }; |
| |
| void CFX_Renderer::CompositeSpan(uint8_t* dest_scan, |
| uint8_t* backdrop_scan, |
| int Bpp, |
| bool bDestAlpha, |
| int span_left, |
| int span_len, |
| uint8_t* cover_scan, |
| int clip_left, |
| int clip_right, |
| uint8_t* clip_scan) { |
| ASSERT(!m_pDevice->IsCmykImage()); |
| int col_start = GetColStart(span_left, clip_left); |
| int col_end = GetColEnd(span_left, span_len, clip_right); |
| if (Bpp) { |
| dest_scan += col_start * Bpp; |
| backdrop_scan += col_start * Bpp; |
| } else { |
| dest_scan += col_start / 8; |
| backdrop_scan += col_start / 8; |
| } |
| if (m_bRgbByteOrder) { |
| if (Bpp == 4 && bDestAlpha) { |
| for (int col = col_start; col < col_end; col++) { |
| int src_alpha = GetSrcAlpha(clip_scan, col); |
| uint8_t dest_alpha = |
| backdrop_scan[3] + src_alpha - backdrop_scan[3] * src_alpha / 255; |
| dest_scan[3] = dest_alpha; |
| int alpha_ratio = src_alpha * 255 / dest_alpha; |
| if (m_bFullCover) { |
| *dest_scan++ = |
| FXDIB_ALPHA_MERGE(*backdrop_scan++, m_Red, alpha_ratio); |
| *dest_scan++ = |
| FXDIB_ALPHA_MERGE(*backdrop_scan++, m_Green, alpha_ratio); |
| *dest_scan++ = |
| FXDIB_ALPHA_MERGE(*backdrop_scan++, m_Blue, alpha_ratio); |
| dest_scan++; |
| backdrop_scan++; |
| } else { |
| int r = FXDIB_ALPHA_MERGE(*backdrop_scan++, m_Red, alpha_ratio); |
| int g = FXDIB_ALPHA_MERGE(*backdrop_scan++, m_Green, alpha_ratio); |
| int b = FXDIB_ALPHA_MERGE(*backdrop_scan++, m_Blue, alpha_ratio); |
| backdrop_scan++; |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, r, cover_scan[col]); |
| dest_scan++; |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, g, cover_scan[col]); |
| dest_scan++; |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, b, cover_scan[col]); |
| dest_scan += 2; |
| } |
| } |
| return; |
| } |
| if (Bpp == 3 || Bpp == 4) { |
| for (int col = col_start; col < col_end; col++) { |
| int src_alpha = GetSrcAlpha(clip_scan, col); |
| int r = FXDIB_ALPHA_MERGE(*backdrop_scan++, m_Red, src_alpha); |
| int g = FXDIB_ALPHA_MERGE(*backdrop_scan++, m_Green, src_alpha); |
| int b = FXDIB_ALPHA_MERGE(*backdrop_scan, m_Blue, src_alpha); |
| backdrop_scan += Bpp - 2; |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, r, cover_scan[col]); |
| dest_scan++; |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, g, cover_scan[col]); |
| dest_scan++; |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, b, cover_scan[col]); |
| dest_scan += Bpp - 2; |
| } |
| } |
| return; |
| } |
| if (Bpp == 4 && bDestAlpha) { |
| for (int col = col_start; col < col_end; col++) { |
| int src_alpha = GetSrcAlpha(clip_scan, col); |
| int src_alpha_covered = src_alpha * cover_scan[col] / 255; |
| if (src_alpha_covered == 0) { |
| dest_scan += 4; |
| continue; |
| } |
| if (cover_scan[col] == 255) { |
| dest_scan[3] = src_alpha_covered; |
| *dest_scan++ = m_Blue; |
| *dest_scan++ = m_Green; |
| *dest_scan = m_Red; |
| dest_scan += 2; |
| continue; |
| } |
| if (dest_scan[3] == 0) { |
| dest_scan[3] = src_alpha_covered; |
| *dest_scan++ = m_Blue; |
| *dest_scan++ = m_Green; |
| *dest_scan = m_Red; |
| dest_scan += 2; |
| continue; |
| } |
| uint8_t cover = cover_scan[col]; |
| dest_scan[3] = FXDIB_ALPHA_MERGE(dest_scan[3], src_alpha, cover); |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Blue, cover); |
| dest_scan++; |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Green, cover); |
| dest_scan++; |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Red, cover); |
| dest_scan += 2; |
| } |
| return; |
| } |
| if (Bpp == 3 || Bpp == 4) { |
| for (int col = col_start; col < col_end; col++) { |
| int src_alpha = GetSrcAlpha(clip_scan, col); |
| if (m_bFullCover) { |
| *dest_scan++ = FXDIB_ALPHA_MERGE(*backdrop_scan++, m_Blue, src_alpha); |
| *dest_scan++ = FXDIB_ALPHA_MERGE(*backdrop_scan++, m_Green, src_alpha); |
| *dest_scan = FXDIB_ALPHA_MERGE(*backdrop_scan, m_Red, src_alpha); |
| dest_scan += Bpp - 2; |
| backdrop_scan += Bpp - 2; |
| continue; |
| } |
| int b = FXDIB_ALPHA_MERGE(*backdrop_scan++, m_Blue, src_alpha); |
| int g = FXDIB_ALPHA_MERGE(*backdrop_scan++, m_Green, src_alpha); |
| int r = FXDIB_ALPHA_MERGE(*backdrop_scan, m_Red, src_alpha); |
| backdrop_scan += Bpp - 2; |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, b, cover_scan[col]); |
| dest_scan++; |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, g, cover_scan[col]); |
| dest_scan++; |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, r, cover_scan[col]); |
| dest_scan += Bpp - 2; |
| continue; |
| } |
| return; |
| } |
| if (Bpp == 1) { |
| for (int col = col_start; col < col_end; col++) { |
| int src_alpha = GetSrcAlpha(clip_scan, col); |
| if (m_bFullCover) { |
| *dest_scan = FXDIB_ALPHA_MERGE(*backdrop_scan++, m_Gray, src_alpha); |
| continue; |
| } |
| int gray = FXDIB_ALPHA_MERGE(*backdrop_scan++, m_Gray, src_alpha); |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, gray, cover_scan[col]); |
| dest_scan++; |
| } |
| return; |
| } |
| CompositeSpan1bppHelper(dest_scan, col_start, col_end, cover_scan, clip_scan, |
| span_left); |
| } |
| |
| void CFX_Renderer::CompositeSpan1bpp(uint8_t* dest_scan, |
| int Bpp, |
| int span_left, |
| int span_len, |
| uint8_t* cover_scan, |
| int clip_left, |
| int clip_right, |
| uint8_t* clip_scan, |
| uint8_t* dest_extra_alpha_scan) { |
| ASSERT(!m_bRgbByteOrder); |
| ASSERT(!m_pDevice->IsCmykImage()); |
| int col_start = GetColStart(span_left, clip_left); |
| int col_end = GetColEnd(span_left, span_len, clip_right); |
| dest_scan += col_start / 8; |
| CompositeSpan1bppHelper(dest_scan, col_start, col_end, cover_scan, clip_scan, |
| span_left); |
| } |
| |
| void CFX_Renderer::CompositeSpanGray(uint8_t* dest_scan, |
| int Bpp, |
| int span_left, |
| int span_len, |
| uint8_t* cover_scan, |
| int clip_left, |
| int clip_right, |
| uint8_t* clip_scan, |
| uint8_t* dest_extra_alpha_scan) { |
| ASSERT(!m_bRgbByteOrder); |
| int col_start = GetColStart(span_left, clip_left); |
| int col_end = GetColEnd(span_left, span_len, clip_right); |
| dest_scan += col_start; |
| if (dest_extra_alpha_scan) { |
| for (int col = col_start; col < col_end; col++) { |
| int src_alpha = m_bFullCover ? GetSrcAlpha(clip_scan, col) |
| : GetSourceAlpha(cover_scan, clip_scan, col); |
| if (src_alpha) { |
| if (src_alpha == 255) { |
| *dest_scan = m_Gray; |
| *dest_extra_alpha_scan = m_Alpha; |
| } else { |
| uint8_t dest_alpha = (*dest_extra_alpha_scan) + src_alpha - |
| (*dest_extra_alpha_scan) * src_alpha / 255; |
| *dest_extra_alpha_scan++ = dest_alpha; |
| int alpha_ratio = src_alpha * 255 / dest_alpha; |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Gray, alpha_ratio); |
| dest_scan++; |
| continue; |
| } |
| } |
| dest_extra_alpha_scan++; |
| dest_scan++; |
| } |
| return; |
| } |
| for (int col = col_start; col < col_end; col++) { |
| int src_alpha = GetSourceAlpha(cover_scan, clip_scan, col); |
| if (src_alpha) { |
| if (src_alpha == 255) |
| *dest_scan = m_Gray; |
| else |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Gray, src_alpha); |
| } |
| dest_scan++; |
| } |
| } |
| |
| void CFX_Renderer::CompositeSpanARGB(uint8_t* dest_scan, |
| int Bpp, |
| int span_left, |
| int span_len, |
| uint8_t* cover_scan, |
| int clip_left, |
| int clip_right, |
| uint8_t* clip_scan, |
| uint8_t* dest_extra_alpha_scan) { |
| int col_start = GetColStart(span_left, clip_left); |
| int col_end = GetColEnd(span_left, span_len, clip_right); |
| dest_scan += col_start * Bpp; |
| if (m_bRgbByteOrder) { |
| for (int col = col_start; col < col_end; col++) { |
| int src_alpha = m_bFullCover ? GetSrcAlpha(clip_scan, col) |
| : GetSourceAlpha(cover_scan, clip_scan, col); |
| if (src_alpha) { |
| if (src_alpha == 255) { |
| *(reinterpret_cast<uint32_t*>(dest_scan)) = m_Color; |
| } else { |
| uint8_t dest_alpha = |
| dest_scan[3] + src_alpha - dest_scan[3] * src_alpha / 255; |
| dest_scan[3] = dest_alpha; |
| int alpha_ratio = src_alpha * 255 / dest_alpha; |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Red, alpha_ratio); |
| dest_scan++; |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Green, alpha_ratio); |
| dest_scan++; |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Blue, alpha_ratio); |
| dest_scan += 2; |
| continue; |
| } |
| } |
| dest_scan += 4; |
| } |
| return; |
| } |
| for (int col = col_start; col < col_end; col++) { |
| int src_alpha = m_bFullCover ? GetSrcAlpha(clip_scan, col) |
| : GetSourceAlpha(cover_scan, clip_scan, col); |
| if (src_alpha) { |
| if (src_alpha == 255) { |
| *(reinterpret_cast<uint32_t*>(dest_scan)) = m_Color; |
| } else { |
| if (dest_scan[3] == 0) { |
| dest_scan[3] = src_alpha; |
| *dest_scan++ = m_Blue; |
| *dest_scan++ = m_Green; |
| *dest_scan = m_Red; |
| dest_scan += 2; |
| continue; |
| } |
| uint8_t dest_alpha = |
| dest_scan[3] + src_alpha - dest_scan[3] * src_alpha / 255; |
| dest_scan[3] = dest_alpha; |
| int alpha_ratio = src_alpha * 255 / dest_alpha; |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Blue, alpha_ratio); |
| dest_scan++; |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Green, alpha_ratio); |
| dest_scan++; |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Red, alpha_ratio); |
| dest_scan += 2; |
| continue; |
| } |
| } |
| dest_scan += Bpp; |
| } |
| } |
| |
| void CFX_Renderer::CompositeSpanRGB(uint8_t* dest_scan, |
| int Bpp, |
| int span_left, |
| int span_len, |
| uint8_t* cover_scan, |
| int clip_left, |
| int clip_right, |
| uint8_t* clip_scan, |
| uint8_t* dest_extra_alpha_scan) { |
| int col_start = GetColStart(span_left, clip_left); |
| int col_end = GetColEnd(span_left, span_len, clip_right); |
| dest_scan += col_start * Bpp; |
| if (m_bRgbByteOrder) { |
| for (int col = col_start; col < col_end; col++) { |
| int src_alpha = GetSourceAlpha(cover_scan, clip_scan, col); |
| if (src_alpha) { |
| if (src_alpha == 255) { |
| if (Bpp == 4) { |
| *(uint32_t*)dest_scan = m_Color; |
| } else if (Bpp == 3) { |
| *dest_scan++ = m_Red; |
| *dest_scan++ = m_Green; |
| *dest_scan++ = m_Blue; |
| continue; |
| } |
| } else { |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Red, src_alpha); |
| dest_scan++; |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Green, src_alpha); |
| dest_scan++; |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Blue, src_alpha); |
| dest_scan += Bpp - 2; |
| continue; |
| } |
| } |
| dest_scan += Bpp; |
| } |
| return; |
| } |
| if (Bpp == 3 && dest_extra_alpha_scan) { |
| for (int col = col_start; col < col_end; col++) { |
| int src_alpha = m_bFullCover ? GetSrcAlpha(clip_scan, col) |
| : GetSourceAlpha(cover_scan, clip_scan, col); |
| if (src_alpha) { |
| if (src_alpha == 255) { |
| *dest_scan++ = static_cast<uint8_t>(m_Blue); |
| *dest_scan++ = static_cast<uint8_t>(m_Green); |
| *dest_scan++ = static_cast<uint8_t>(m_Red); |
| *dest_extra_alpha_scan++ = static_cast<uint8_t>(m_Alpha); |
| continue; |
| } |
| uint8_t dest_alpha = (*dest_extra_alpha_scan) + src_alpha - |
| (*dest_extra_alpha_scan) * src_alpha / 255; |
| *dest_extra_alpha_scan++ = dest_alpha; |
| int alpha_ratio = src_alpha * 255 / dest_alpha; |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Blue, alpha_ratio); |
| dest_scan++; |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Green, alpha_ratio); |
| dest_scan++; |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Red, alpha_ratio); |
| dest_scan++; |
| continue; |
| } |
| dest_extra_alpha_scan++; |
| dest_scan += Bpp; |
| } |
| return; |
| } |
| for (int col = col_start; col < col_end; col++) { |
| int src_alpha = m_bFullCover ? GetSrcAlpha(clip_scan, col) |
| : GetSourceAlpha(cover_scan, clip_scan, col); |
| if (src_alpha) { |
| if (src_alpha == 255) { |
| if (Bpp == 4) { |
| *(uint32_t*)dest_scan = m_Color; |
| } else if (Bpp == 3) { |
| *dest_scan++ = m_Blue; |
| *dest_scan++ = m_Green; |
| *dest_scan++ = m_Red; |
| continue; |
| } |
| } else { |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Blue, src_alpha); |
| dest_scan++; |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Green, src_alpha); |
| dest_scan++; |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Red, src_alpha); |
| dest_scan += Bpp - 2; |
| continue; |
| } |
| } |
| dest_scan += Bpp; |
| } |
| } |
| |
| void CFX_Renderer::CompositeSpanCMYK(uint8_t* dest_scan, |
| int Bpp, |
| int span_left, |
| int span_len, |
| uint8_t* cover_scan, |
| int clip_left, |
| int clip_right, |
| uint8_t* clip_scan, |
| uint8_t* dest_extra_alpha_scan) { |
| ASSERT(!m_bRgbByteOrder); |
| int col_start = GetColStart(span_left, clip_left); |
| int col_end = GetColEnd(span_left, span_len, clip_right); |
| dest_scan += col_start * 4; |
| if (dest_extra_alpha_scan) { |
| for (int col = col_start; col < col_end; col++) { |
| int src_alpha = m_bFullCover ? GetSrcAlpha(clip_scan, col) |
| : GetSourceAlpha(cover_scan, clip_scan, col); |
| if (src_alpha) { |
| if (src_alpha == 255) { |
| *(reinterpret_cast<FX_CMYK*>(dest_scan)) = m_Color; |
| *dest_extra_alpha_scan = static_cast<uint8_t>(m_Alpha); |
| } else { |
| uint8_t dest_alpha = (*dest_extra_alpha_scan) + src_alpha - |
| (*dest_extra_alpha_scan) * src_alpha / 255; |
| *dest_extra_alpha_scan++ = dest_alpha; |
| int alpha_ratio = src_alpha * 255 / dest_alpha; |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Red, alpha_ratio); |
| dest_scan++; |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Green, alpha_ratio); |
| dest_scan++; |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Blue, alpha_ratio); |
| dest_scan++; |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Gray, alpha_ratio); |
| dest_scan++; |
| continue; |
| } |
| } |
| dest_extra_alpha_scan++; |
| dest_scan += 4; |
| } |
| return; |
| } |
| for (int col = col_start; col < col_end; col++) { |
| int src_alpha = GetSourceAlpha(cover_scan, clip_scan, col); |
| if (src_alpha) { |
| if (src_alpha == 255) { |
| *(reinterpret_cast<FX_CMYK*>(dest_scan)) = m_Color; |
| } else { |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Red, src_alpha); |
| dest_scan++; |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Green, src_alpha); |
| dest_scan++; |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Blue, src_alpha); |
| dest_scan++; |
| *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Gray, src_alpha); |
| dest_scan++; |
| continue; |
| } |
| } |
| dest_scan += 4; |
| } |
| } |
| |
| bool CFX_Renderer::Init(const RetainPtr<CFX_DIBitmap>& pDevice, |
| const RetainPtr<CFX_DIBitmap>& pBackdropDevice, |
| const CFX_ClipRgn* pClipRgn, |
| uint32_t color, |
| bool bFullCover, |
| bool bRgbByteOrder) { |
| m_pDevice = pDevice; |
| m_pClipRgn = pClipRgn; |
| composite_span = nullptr; |
| m_bRgbByteOrder = bRgbByteOrder; |
| m_pBackdropDevice = pBackdropDevice; |
| if (m_pClipRgn) { |
| m_ClipBox = m_pClipRgn->GetBox(); |
| } else { |
| m_ClipBox.left = m_ClipBox.top = 0; |
| m_ClipBox.right = m_pDevice->GetWidth(); |
| m_ClipBox.bottom = m_pDevice->GetHeight(); |
| } |
| m_pClipMask = nullptr; |
| if (m_pClipRgn && m_pClipRgn->GetType() == CFX_ClipRgn::MaskF) |
| m_pClipMask = m_pClipRgn->GetMask(); |
| m_bFullCover = bFullCover; |
| bool bDeviceCMYK = pDevice->IsCmykImage(); |
| m_Alpha = FXARGB_A(color); |
| if (m_pDevice->GetBPP() == 8) { |
| ASSERT(!m_bRgbByteOrder); |
| composite_span = &CFX_Renderer::CompositeSpanGray; |
| if (m_pDevice->IsAlphaMask()) |
| m_Gray = 255; |
| else |
| m_Gray = FXRGB2GRAY(FXARGB_R(color), FXARGB_G(color), FXARGB_B(color)); |
| return true; |
| } |
| if (bDeviceCMYK) { |
| ASSERT(!m_bRgbByteOrder); |
| composite_span = &CFX_Renderer::CompositeSpanCMYK; |
| return false; |
| } |
| composite_span = (pDevice->GetFormat() == FXDIB_Argb) |
| ? &CFX_Renderer::CompositeSpanARGB |
| : &CFX_Renderer::CompositeSpanRGB; |
| if (m_bRgbByteOrder) |
| m_Color = FXARGB_TOBGRORDERDIB(color); |
| else |
| m_Color = FXARGB_TODIB(color); |
| std::tie(m_Alpha, m_Red, m_Green, m_Blue) = ArgbDecode(color); |
| if (m_pDevice->GetBPP() == 1) |
| composite_span = &CFX_Renderer::CompositeSpan1bpp; |
| return true; |
| } |
| |
| template <class Scanline> |
| void CFX_Renderer::render(const Scanline& sl) { |
| if (!m_pBackdropDevice && !composite_span) |
| return; |
| |
| int y = sl.y(); |
| if (y < m_ClipBox.top || y >= m_ClipBox.bottom) |
| return; |
| |
| uint8_t* dest_scan = m_pDevice->GetBuffer() + m_pDevice->GetPitch() * y; |
| uint8_t* dest_scan_extra_alpha = nullptr; |
| RetainPtr<CFX_DIBitmap> pAlphaMask = m_pDevice->m_pAlphaMask; |
| if (pAlphaMask) { |
| dest_scan_extra_alpha = |
| pAlphaMask->GetBuffer() + pAlphaMask->GetPitch() * y; |
| } |
| uint8_t* backdrop_scan = nullptr; |
| if (m_pBackdropDevice) { |
| backdrop_scan = |
| m_pBackdropDevice->GetBuffer() + m_pBackdropDevice->GetPitch() * y; |
| } |
| int Bpp = m_pDevice->GetBPP() / 8; |
| bool bDestAlpha = m_pDevice->HasAlpha() || m_pDevice->IsAlphaMask(); |
| unsigned num_spans = sl.num_spans(); |
| typename Scanline::const_iterator span = sl.begin(); |
| while (1) { |
| if (span->len <= 0) |
| break; |
| |
| int x = span->x; |
| uint8_t* dest_pos = nullptr; |
| uint8_t* dest_extra_alpha_pos = nullptr; |
| uint8_t* backdrop_pos = nullptr; |
| if (Bpp) { |
| backdrop_pos = backdrop_scan ? backdrop_scan + x * Bpp : nullptr; |
| dest_pos = dest_scan + x * Bpp; |
| dest_extra_alpha_pos = |
| dest_scan_extra_alpha ? dest_scan_extra_alpha + x : nullptr; |
| } else { |
| dest_pos = dest_scan + x / 8; |
| backdrop_pos = backdrop_scan ? backdrop_scan + x / 8 : nullptr; |
| } |
| uint8_t* clip_pos = nullptr; |
| if (m_pClipMask) { |
| clip_pos = m_pClipMask->GetBuffer() + |
| (y - m_ClipBox.top) * m_pClipMask->GetPitch() + x - |
| m_ClipBox.left; |
| } |
| if (backdrop_pos) { |
| CompositeSpan(dest_pos, backdrop_pos, Bpp, bDestAlpha, x, span->len, |
| span->covers, m_ClipBox.left, m_ClipBox.right, clip_pos); |
| } else { |
| (this->*composite_span)(dest_pos, Bpp, x, span->len, span->covers, |
| m_ClipBox.left, m_ClipBox.right, clip_pos, |
| dest_extra_alpha_pos); |
| } |
| if (--num_spans == 0) |
| break; |
| |
| ++span; |
| } |
| } |
| |
| void CFX_Renderer::CompositeSpan1bppHelper(uint8_t* dest_scan, |
| int col_start, |
| int col_end, |
| const uint8_t* cover_scan, |
| const uint8_t* clip_scan, |
| int span_left) { |
| int index = 0; |
| if (m_pDevice->GetPalette()) { |
| for (int i = 0; i < 2; i++) { |
| if (FXARGB_TODIB(m_pDevice->GetPalette()[i]) == m_Color) |
| index = i; |
| } |
| } else { |
| index = (static_cast<uint8_t>(m_Color) == 0xff) ? 1 : 0; |
| } |
| uint8_t* dest_scan1 = dest_scan; |
| for (int col = col_start; col < col_end; col++) { |
| int src_alpha = GetSourceAlpha(cover_scan, clip_scan, col); |
| if (src_alpha) { |
| if (!index) |
| *dest_scan1 &= ~(1 << (7 - (col + span_left) % 8)); |
| else |
| *dest_scan1 |= 1 << (7 - (col + span_left) % 8); |
| } |
| dest_scan1 = dest_scan + (span_left % 8 + col - col_start + 1) / 8; |
| } |
| } |
| |
| } // namespace |
| |
| namespace agg { |
| |
| template <class BaseRenderer> |
| class renderer_scanline_aa_offset { |
| public: |
| typedef BaseRenderer base_ren_type; |
| typedef typename base_ren_type::color_type color_type; |
| renderer_scanline_aa_offset(base_ren_type& ren, unsigned left, unsigned top) |
| : m_ren(&ren), m_left(left), m_top(top) {} |
| void color(const color_type& c) { m_color = c; } |
| const color_type& color() const { return m_color; } |
| void prepare(unsigned) {} |
| template <class Scanline> |
| void render(const Scanline& sl) { |
| int y = sl.y(); |
| unsigned num_spans = sl.num_spans(); |
| typename Scanline::const_iterator span = sl.begin(); |
| while (1) { |
| int x = span->x; |
| if (span->len > 0) { |
| m_ren->blend_solid_hspan(x - m_left, y - m_top, (unsigned)span->len, |
| m_color, span->covers); |
| } else { |
| m_ren->blend_hline(x - m_left, y - m_top, (unsigned)(x - span->len - 1), |
| m_color, *(span->covers)); |
| } |
| if (--num_spans == 0) |
| break; |
| |
| ++span; |
| } |
| } |
| |
| private: |
| base_ren_type* m_ren; |
| color_type m_color; |
| unsigned m_left, m_top; |
| }; |
| |
| } // namespace agg |
| |
| void CAgg_PathData::BuildPath(const CFX_PathData* pPathData, |
| const CFX_Matrix* pObject2Device) { |
| const std::vector<FX_PATHPOINT>& pPoints = pPathData->GetPoints(); |
| for (size_t i = 0; i < pPoints.size(); i++) { |
| CFX_PointF pos = pPoints[i].m_Point; |
| if (pObject2Device) |
| pos = pObject2Device->Transform(pos); |
| |
| pos = HardClip(pos); |
| FXPT_TYPE point_type = pPoints[i].m_Type; |
| if (point_type == FXPT_TYPE::MoveTo) { |
| m_PathData.move_to(pos.x, pos.y); |
| } else if (point_type == FXPT_TYPE::LineTo) { |
| if (i > 0 && pPoints[i - 1].IsTypeAndOpen(FXPT_TYPE::MoveTo) && |
| (i == pPoints.size() - 1 || |
| pPoints[i + 1].IsTypeAndOpen(FXPT_TYPE::MoveTo)) && |
| pPoints[i].m_Point == pPoints[i - 1].m_Point) { |
| pos.x += 1; |
| } |
| m_PathData.line_to(pos.x, pos.y); |
| } else if (point_type == FXPT_TYPE::BezierTo) { |
| if (i > 0 && i + 2 < pPoints.size()) { |
| CFX_PointF pos0 = pPoints[i - 1].m_Point; |
| CFX_PointF pos2 = pPoints[i + 1].m_Point; |
| CFX_PointF pos3 = pPoints[i + 2].m_Point; |
| if (pObject2Device) { |
| pos0 = pObject2Device->Transform(pos0); |
| pos2 = pObject2Device->Transform(pos2); |
| pos3 = pObject2Device->Transform(pos3); |
| } |
| pos0 = HardClip(pos0); |
| pos2 = HardClip(pos2); |
| pos3 = HardClip(pos3); |
| agg::curve4 curve(pos0.x, pos0.y, pos.x, pos.y, pos2.x, pos2.y, pos3.x, |
| pos3.y); |
| i += 2; |
| m_PathData.add_path_curve(curve); |
| } |
| } |
| if (pPoints[i].m_CloseFigure) |
| m_PathData.end_poly(); |
| } |
| } |
| |
| CFX_AggDeviceDriver::CFX_AggDeviceDriver( |
| const RetainPtr<CFX_DIBitmap>& pBitmap, |
| bool bRgbByteOrder, |
| const RetainPtr<CFX_DIBitmap>& pBackdropBitmap, |
| bool bGroupKnockout) |
| : m_pBitmap(pBitmap), |
| #if _FX_PLATFORM_ == _FX_PLATFORM_APPLE_ |
| m_pPlatformGraphics(nullptr), |
| #endif |
| m_FillFlags(0), |
| m_bRgbByteOrder(bRgbByteOrder), |
| m_pBackdropBitmap(pBackdropBitmap), |
| m_bGroupKnockout(bGroupKnockout) { |
| InitPlatform(); |
| } |
| |
| CFX_AggDeviceDriver::~CFX_AggDeviceDriver() { |
| DestroyPlatform(); |
| } |
| |
| uint8_t* CFX_AggDeviceDriver::GetBuffer() const { |
| return m_pBitmap->GetBuffer(); |
| } |
| |
| #if _FX_PLATFORM_ != _FX_PLATFORM_APPLE_ |
| void CFX_AggDeviceDriver::InitPlatform() {} |
| |
| void CFX_AggDeviceDriver::DestroyPlatform() {} |
| |
| bool CFX_AggDeviceDriver::DrawDeviceText(int nChars, |
| const FXTEXT_CHARPOS* pCharPos, |
| CFX_Font* pFont, |
| const CFX_Matrix* pObject2Device, |
| float font_size, |
| uint32_t color) { |
| return false; |
| } |
| #endif // _FX_PLATFORM_ != _FX_PLATFORM_APPLE_ |
| |
| int CFX_AggDeviceDriver::GetDeviceCaps(int caps_id) const { |
| switch (caps_id) { |
| case FXDC_DEVICE_CLASS: |
| return FXDC_DISPLAY; |
| case FXDC_PIXEL_WIDTH: |
| return m_pBitmap->GetWidth(); |
| case FXDC_PIXEL_HEIGHT: |
| return m_pBitmap->GetHeight(); |
| case FXDC_BITS_PIXEL: |
| return m_pBitmap->GetBPP(); |
| case FXDC_HORZ_SIZE: |
| case FXDC_VERT_SIZE: |
| return 0; |
| case FXDC_RENDER_CAPS: { |
| int flags = FXRC_GET_BITS | FXRC_ALPHA_PATH | FXRC_ALPHA_IMAGE | |
| FXRC_BLEND_MODE | FXRC_SOFT_CLIP; |
| if (m_pBitmap->HasAlpha()) { |
| flags |= FXRC_ALPHA_OUTPUT; |
| } else if (m_pBitmap->IsAlphaMask()) { |
| if (m_pBitmap->GetBPP() == 1) |
| flags |= FXRC_BITMASK_OUTPUT; |
| else |
| flags |= FXRC_BYTEMASK_OUTPUT; |
| } |
| if (m_pBitmap->IsCmykImage()) |
| flags |= FXRC_CMYK_OUTPUT; |
| return flags; |
| } |
| default: |
| return 0; |
| } |
| } |
| |
| void CFX_AggDeviceDriver::SaveState() { |
| std::unique_ptr<CFX_ClipRgn> pClip; |
| if (m_pClipRgn) |
| pClip = pdfium::MakeUnique<CFX_ClipRgn>(*m_pClipRgn); |
| m_StateStack.push_back(std::move(pClip)); |
| } |
| |
| void CFX_AggDeviceDriver::RestoreState(bool bKeepSaved) { |
| m_pClipRgn.reset(); |
| |
| if (m_StateStack.empty()) |
| return; |
| |
| if (bKeepSaved) { |
| if (m_StateStack.back()) |
| m_pClipRgn = pdfium::MakeUnique<CFX_ClipRgn>(*m_StateStack.back()); |
| } else { |
| m_pClipRgn = std::move(m_StateStack.back()); |
| m_StateStack.pop_back(); |
| } |
| } |
| |
| void CFX_AggDeviceDriver::SetClipMask(agg::rasterizer_scanline_aa& rasterizer) { |
| FX_RECT path_rect(rasterizer.min_x(), rasterizer.min_y(), |
| rasterizer.max_x() + 1, rasterizer.max_y() + 1); |
| path_rect.Intersect(m_pClipRgn->GetBox()); |
| auto pThisLayer = pdfium::MakeRetain<CFX_DIBitmap>(); |
| pThisLayer->Create(path_rect.Width(), path_rect.Height(), FXDIB_8bppMask); |
| pThisLayer->Clear(0); |
| agg::rendering_buffer raw_buf(pThisLayer->GetBuffer(), pThisLayer->GetWidth(), |
| pThisLayer->GetHeight(), |
| pThisLayer->GetPitch()); |
| agg::pixfmt_gray8 pixel_buf(raw_buf); |
| agg::renderer_base<agg::pixfmt_gray8> base_buf(pixel_buf); |
| agg::renderer_scanline_aa_offset<agg::renderer_base<agg::pixfmt_gray8> > |
| final_render(base_buf, path_rect.left, path_rect.top); |
| final_render.color(agg::gray8(255)); |
| agg::scanline_u8 scanline; |
| agg::render_scanlines(rasterizer, scanline, final_render, |
| (m_FillFlags & FXFILL_NOPATHSMOOTH) != 0); |
| m_pClipRgn->IntersectMaskF(path_rect.left, path_rect.top, pThisLayer); |
| } |
| |
| bool CFX_AggDeviceDriver::SetClip_PathFill(const CFX_PathData* pPathData, |
| const CFX_Matrix* pObject2Device, |
| int fill_mode) { |
| m_FillFlags = fill_mode; |
| if (!m_pClipRgn) { |
| m_pClipRgn = pdfium::MakeUnique<CFX_ClipRgn>( |
| GetDeviceCaps(FXDC_PIXEL_WIDTH), GetDeviceCaps(FXDC_PIXEL_HEIGHT)); |
| } |
| size_t size = pPathData->GetPoints().size(); |
| if (size == 5 || size == 4) { |
| CFX_FloatRect rectf; |
| if (pPathData->IsRect(pObject2Device, &rectf)) { |
| rectf.Intersect(CFX_FloatRect( |
| 0, 0, static_cast<float>(GetDeviceCaps(FXDC_PIXEL_WIDTH)), |
| static_cast<float>(GetDeviceCaps(FXDC_PIXEL_HEIGHT)))); |
| FX_RECT rect = rectf.GetOuterRect(); |
| m_pClipRgn->IntersectRect(rect); |
| return true; |
| } |
| } |
| CAgg_PathData path_data; |
| path_data.BuildPath(pPathData, pObject2Device); |
| path_data.m_PathData.end_poly(); |
| agg::rasterizer_scanline_aa rasterizer; |
| rasterizer.clip_box(0.0f, 0.0f, |
| static_cast<float>(GetDeviceCaps(FXDC_PIXEL_WIDTH)), |
| static_cast<float>(GetDeviceCaps(FXDC_PIXEL_HEIGHT))); |
| rasterizer.add_path(path_data.m_PathData); |
| rasterizer.filling_rule((fill_mode & 3) == FXFILL_WINDING |
| ? agg::fill_non_zero |
| : agg::fill_even_odd); |
| SetClipMask(rasterizer); |
| return true; |
| } |
| |
| bool CFX_AggDeviceDriver::SetClip_PathStroke( |
| const CFX_PathData* pPathData, |
| const CFX_Matrix* pObject2Device, |
| const CFX_GraphStateData* pGraphState) { |
| if (!m_pClipRgn) { |
| m_pClipRgn = pdfium::MakeUnique<CFX_ClipRgn>( |
| GetDeviceCaps(FXDC_PIXEL_WIDTH), GetDeviceCaps(FXDC_PIXEL_HEIGHT)); |
| } |
| CAgg_PathData path_data; |
| path_data.BuildPath(pPathData, nullptr); |
| agg::rasterizer_scanline_aa rasterizer; |
| rasterizer.clip_box(0.0f, 0.0f, |
| static_cast<float>(GetDeviceCaps(FXDC_PIXEL_WIDTH)), |
| static_cast<float>(GetDeviceCaps(FXDC_PIXEL_HEIGHT))); |
| RasterizeStroke(&rasterizer, &path_data.m_PathData, pObject2Device, |
| pGraphState, 1.0f, false, false); |
| rasterizer.filling_rule(agg::fill_non_zero); |
| SetClipMask(rasterizer); |
| return true; |
| } |
| |
| int CFX_AggDeviceDriver::GetDriverType() const { |
| return 1; |
| } |
| |
| bool CFX_AggDeviceDriver::RenderRasterizer( |
| agg::rasterizer_scanline_aa& rasterizer, |
| uint32_t color, |
| bool bFullCover, |
| bool bGroupKnockout) { |
| RetainPtr<CFX_DIBitmap> pt = bGroupKnockout ? m_pBackdropBitmap : nullptr; |
| CFX_Renderer render; |
| if (!render.Init(m_pBitmap, pt, m_pClipRgn.get(), color, bFullCover, |
| m_bRgbByteOrder)) { |
| return false; |
| } |
| agg::scanline_u8 scanline; |
| agg::render_scanlines(rasterizer, scanline, render, |
| (m_FillFlags & FXFILL_NOPATHSMOOTH) != 0); |
| return true; |
| } |
| |
| bool CFX_AggDeviceDriver::DrawPath(const CFX_PathData* pPathData, |
| const CFX_Matrix* pObject2Device, |
| const CFX_GraphStateData* pGraphState, |
| uint32_t fill_color, |
| uint32_t stroke_color, |
| int fill_mode, |
| int blend_type) { |
| if (blend_type != FXDIB_BLEND_NORMAL) |
| return false; |
| |
| if (!GetBuffer()) |
| return true; |
| |
| m_FillFlags = fill_mode; |
| if ((fill_mode & 3) && fill_color) { |
| CAgg_PathData path_data; |
| path_data.BuildPath(pPathData, pObject2Device); |
| agg::rasterizer_scanline_aa rasterizer; |
| rasterizer.clip_box(0.0f, 0.0f, |
| static_cast<float>(GetDeviceCaps(FXDC_PIXEL_WIDTH)), |
| static_cast<float>(GetDeviceCaps(FXDC_PIXEL_HEIGHT))); |
| rasterizer.add_path(path_data.m_PathData); |
| rasterizer.filling_rule((fill_mode & 3) == FXFILL_WINDING |
| ? agg::fill_non_zero |
| : agg::fill_even_odd); |
| if (!RenderRasterizer(rasterizer, fill_color, |
| !!(fill_mode & FXFILL_FULLCOVER), false)) { |
| return false; |
| } |
| } |
| int stroke_alpha = FXARGB_A(stroke_color); |
| if (!pGraphState || !stroke_alpha) |
| return true; |
| |
| if (fill_mode & FX_ZEROAREA_FILL) { |
| CAgg_PathData path_data; |
| path_data.BuildPath(pPathData, pObject2Device); |
| agg::rasterizer_scanline_aa rasterizer; |
| rasterizer.clip_box(0.0f, 0.0f, |
| static_cast<float>(GetDeviceCaps(FXDC_PIXEL_WIDTH)), |
| static_cast<float>(GetDeviceCaps(FXDC_PIXEL_HEIGHT))); |
| RasterizeStroke(&rasterizer, &path_data.m_PathData, nullptr, pGraphState, 1, |
| false, !!(fill_mode & FX_STROKE_TEXT_MODE)); |
| return RenderRasterizer(rasterizer, stroke_color, |
| !!(fill_mode & FXFILL_FULLCOVER), m_bGroupKnockout); |
| } |
| CFX_Matrix matrix1; |
| CFX_Matrix matrix2; |
| if (pObject2Device) { |
| matrix1.a = std::max(fabs(pObject2Device->a), fabs(pObject2Device->b)); |
| matrix1.d = matrix1.a; |
| matrix2 = CFX_Matrix( |
| pObject2Device->a / matrix1.a, pObject2Device->b / matrix1.a, |
| pObject2Device->c / matrix1.d, pObject2Device->d / matrix1.d, 0, 0); |
| |
| matrix1 = *pObject2Device; |
| matrix1.Concat(matrix2.GetInverse()); |
| } |
| |
| CAgg_PathData path_data; |
| path_data.BuildPath(pPathData, &matrix1); |
| agg::rasterizer_scanline_aa rasterizer; |
| rasterizer.clip_box(0.0f, 0.0f, |
| static_cast<float>(GetDeviceCaps(FXDC_PIXEL_WIDTH)), |
| static_cast<float>(GetDeviceCaps(FXDC_PIXEL_HEIGHT))); |
| RasterizeStroke(&rasterizer, &path_data.m_PathData, &matrix2, pGraphState, |
| matrix1.a, false, !!(fill_mode & FX_STROKE_TEXT_MODE)); |
| return RenderRasterizer(rasterizer, stroke_color, |
| !!(fill_mode & FXFILL_FULLCOVER), m_bGroupKnockout); |
| } |
| |
| bool CFX_AggDeviceDriver::SetPixel(int x, int y, uint32_t color) { |
| if (!m_pBitmap->GetBuffer()) |
| return true; |
| |
| if (!m_pClipRgn) { |
| if (!m_bRgbByteOrder) |
| return DibSetPixel(m_pBitmap, x, y, color); |
| RgbByteOrderSetPixel(m_pBitmap, x, y, color); |
| return true; |
| } |
| if (!m_pClipRgn->GetBox().Contains(x, y)) |
| return true; |
| |
| if (m_pClipRgn->GetType() == CFX_ClipRgn::RectI) { |
| if (!m_bRgbByteOrder) |
| return DibSetPixel(m_pBitmap, x, y, color); |
| RgbByteOrderSetPixel(m_pBitmap, x, y, color); |
| return true; |
| } |
| if (m_pClipRgn->GetType() != CFX_ClipRgn::MaskF) |
| return true; |
| |
| int new_alpha = |
| FXARGB_A(color) * m_pClipRgn->GetMask()->GetScanline(y)[x] / 255; |
| color = (color & 0xffffff) | (new_alpha << 24); |
| if (m_bRgbByteOrder) { |
| RgbByteOrderSetPixel(m_pBitmap, x, y, color); |
| return true; |
| } |
| return DibSetPixel(m_pBitmap, x, y, color); |
| } |
| |
| bool CFX_AggDeviceDriver::FillRectWithBlend(const FX_RECT& rect, |
| uint32_t fill_color, |
| int blend_type) { |
| if (blend_type != FXDIB_BLEND_NORMAL) |
| return false; |
| |
| if (!m_pBitmap->GetBuffer()) |
| return true; |
| |
| FX_RECT clip_rect; |
| GetClipBox(&clip_rect); |
| FX_RECT draw_rect = clip_rect; |
| draw_rect.Intersect(rect); |
| if (draw_rect.IsEmpty()) |
| return true; |
| |
| if (!m_pClipRgn || m_pClipRgn->GetType() == CFX_ClipRgn::RectI) { |
| if (m_bRgbByteOrder) { |
| RgbByteOrderCompositeRect(m_pBitmap, draw_rect.left, draw_rect.top, |
| draw_rect.Width(), draw_rect.Height(), |
| fill_color); |
| } else { |
| m_pBitmap->CompositeRect(draw_rect.left, draw_rect.top, draw_rect.Width(), |
| draw_rect.Height(), fill_color, 0); |
| } |
| return true; |
| } |
| m_pBitmap->CompositeMask(draw_rect.left, draw_rect.top, draw_rect.Width(), |
| draw_rect.Height(), m_pClipRgn->GetMask(), |
| fill_color, draw_rect.left - clip_rect.left, |
| draw_rect.top - clip_rect.top, FXDIB_BLEND_NORMAL, |
| nullptr, m_bRgbByteOrder, 0); |
| return true; |
| } |
| |
| bool CFX_AggDeviceDriver::GetClipBox(FX_RECT* pRect) { |
| if (!m_pClipRgn) { |
| pRect->left = pRect->top = 0; |
| pRect->right = GetDeviceCaps(FXDC_PIXEL_WIDTH); |
| pRect->bottom = GetDeviceCaps(FXDC_PIXEL_HEIGHT); |
| return true; |
| } |
| *pRect = m_pClipRgn->GetBox(); |
| return true; |
| } |
| |
| bool CFX_AggDeviceDriver::GetDIBits(const RetainPtr<CFX_DIBitmap>& pBitmap, |
| int left, |
| int top) { |
| if (!m_pBitmap || !m_pBitmap->GetBuffer()) |
| return true; |
| |
| FX_RECT rect(left, top, left + pBitmap->GetWidth(), |
| top + pBitmap->GetHeight()); |
| RetainPtr<CFX_DIBitmap> pBack; |
| if (m_pBackdropBitmap) { |
| pBack = m_pBackdropBitmap->Clone(&rect); |
| if (!pBack) |
| return true; |
| |
| pBack->CompositeBitmap(0, 0, pBack->GetWidth(), pBack->GetHeight(), |
| m_pBitmap, 0, 0, FXDIB_BLEND_NORMAL, nullptr, false); |
| } else { |
| pBack = m_pBitmap->Clone(&rect); |
| if (!pBack) |
| return true; |
| } |
| |
| left = std::min(left, 0); |
| top = std::min(top, 0); |
| if (m_bRgbByteOrder) { |
| RgbByteOrderTransferBitmap(pBitmap, 0, 0, rect.Width(), rect.Height(), |
| pBack, left, top); |
| return true; |
| } |
| return pBitmap->TransferBitmap(0, 0, rect.Width(), rect.Height(), pBack, left, |
| top); |
| } |
| |
| RetainPtr<CFX_DIBitmap> CFX_AggDeviceDriver::GetBackDrop() { |
| return m_pBackdropBitmap; |
| } |
| |
| bool CFX_AggDeviceDriver::SetDIBits(const RetainPtr<CFX_DIBBase>& pBitmap, |
| uint32_t argb, |
| const FX_RECT* pSrcRect, |
| int left, |
| int top, |
| int blend_type) { |
| if (!m_pBitmap->GetBuffer()) |
| return true; |
| |
| if (pBitmap->IsAlphaMask()) { |
| return m_pBitmap->CompositeMask(left, top, pSrcRect->Width(), |
| pSrcRect->Height(), pBitmap, argb, |
| pSrcRect->left, pSrcRect->top, blend_type, |
| m_pClipRgn.get(), m_bRgbByteOrder, 0); |
| } |
| return m_pBitmap->CompositeBitmap( |
| left, top, pSrcRect->Width(), pSrcRect->Height(), pBitmap, pSrcRect->left, |
| pSrcRect->top, blend_type, m_pClipRgn.get(), m_bRgbByteOrder); |
| } |
| |
| bool CFX_AggDeviceDriver::StretchDIBits(const RetainPtr<CFX_DIBBase>& pSource, |
| uint32_t argb, |
| int dest_left, |
| int dest_top, |
| int dest_width, |
| int dest_height, |
| const FX_RECT* pClipRect, |
| uint32_t flags, |
| int blend_type) { |
| if (!m_pBitmap->GetBuffer()) |
| return true; |
| |
| if (dest_width == pSource->GetWidth() && |
| dest_height == pSource->GetHeight()) { |
| FX_RECT rect(0, 0, dest_width, dest_height); |
| return SetDIBits(pSource, argb, &rect, dest_left, dest_top, blend_type); |
| } |
| FX_RECT dest_rect(dest_left, dest_top, dest_left + dest_width, |
| dest_top + dest_height); |
| dest_rect.Normalize(); |
| FX_RECT dest_clip = dest_rect; |
| dest_clip.Intersect(*pClipRect); |
| CFX_BitmapComposer composer; |
| composer.Compose(m_pBitmap, m_pClipRgn.get(), 255, argb, dest_clip, false, |
| false, false, m_bRgbByteOrder, 0, blend_type); |
| dest_clip.Offset(-dest_rect.left, -dest_rect.top); |
| CFX_ImageStretcher stretcher(&composer, pSource, dest_width, dest_height, |
| dest_clip, flags); |
| if (stretcher.Start()) |
| stretcher.Continue(nullptr); |
| return true; |
| } |
| |
| bool CFX_AggDeviceDriver::StartDIBits( |
| const RetainPtr<CFX_DIBBase>& pSource, |
| int bitmap_alpha, |
| uint32_t argb, |
| const CFX_Matrix* pMatrix, |
| uint32_t render_flags, |
| std::unique_ptr<CFX_ImageRenderer>* handle, |
| int blend_type) { |
| if (!m_pBitmap->GetBuffer()) |
| return true; |
| |
| *handle = pdfium::MakeUnique<CFX_ImageRenderer>( |
| m_pBitmap, m_pClipRgn.get(), pSource, bitmap_alpha, argb, pMatrix, |
| render_flags, m_bRgbByteOrder); |
| return true; |
| } |
| |
| bool CFX_AggDeviceDriver::ContinueDIBits(CFX_ImageRenderer* pHandle, |
| PauseIndicatorIface* pPause) { |
| return m_pBitmap->GetBuffer() ? pHandle->Continue(pPause) : true; |
| } |
| |
| #ifndef _SKIA_SUPPORT_ |
| CFX_DefaultRenderDevice::CFX_DefaultRenderDevice() {} |
| |
| CFX_DefaultRenderDevice::~CFX_DefaultRenderDevice() {} |
| |
| bool CFX_DefaultRenderDevice::Attach( |
| const RetainPtr<CFX_DIBitmap>& pBitmap, |
| bool bRgbByteOrder, |
| const RetainPtr<CFX_DIBitmap>& pBackdropBitmap, |
| bool bGroupKnockout) { |
| if (!pBitmap) |
| return false; |
| |
| SetBitmap(pBitmap); |
| SetDeviceDriver(pdfium::MakeUnique<CFX_AggDeviceDriver>( |
| pBitmap, bRgbByteOrder, pBackdropBitmap, bGroupKnockout)); |
| return true; |
| } |
| |
| bool CFX_DefaultRenderDevice::Create( |
| int width, |
| int height, |
| FXDIB_Format format, |
| const RetainPtr<CFX_DIBitmap>& pBackdropBitmap) { |
| auto pBitmap = pdfium::MakeRetain<CFX_DIBitmap>(); |
| if (!pBitmap->Create(width, height, format)) |
| return false; |
| |
| SetBitmap(pBitmap); |
| SetDeviceDriver(pdfium::MakeUnique<CFX_AggDeviceDriver>( |
| pBitmap, false, pBackdropBitmap, false)); |
| return true; |
| } |
| |
| #endif |
