| // Copyright 2016 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/fpdfapi/render/cpdf_renderstatus.h" |
| |
| #include <algorithm> |
| #include <cmath> |
| #include <limits> |
| #include <memory> |
| #include <utility> |
| #include <vector> |
| |
| #include "constants/transparency.h" |
| #include "core/fpdfapi/font/cpdf_font.h" |
| #include "core/fpdfapi/font/cpdf_type3char.h" |
| #include "core/fpdfapi/font/cpdf_type3font.h" |
| #include "core/fpdfapi/page/cpdf_docpagedata.h" |
| #include "core/fpdfapi/page/cpdf_form.h" |
| #include "core/fpdfapi/page/cpdf_formobject.h" |
| #include "core/fpdfapi/page/cpdf_function.h" |
| #include "core/fpdfapi/page/cpdf_graphicstates.h" |
| #include "core/fpdfapi/page/cpdf_image.h" |
| #include "core/fpdfapi/page/cpdf_imageobject.h" |
| #include "core/fpdfapi/page/cpdf_meshstream.h" |
| #include "core/fpdfapi/page/cpdf_page.h" |
| #include "core/fpdfapi/page/cpdf_pageobject.h" |
| #include "core/fpdfapi/page/cpdf_pathobject.h" |
| #include "core/fpdfapi/page/cpdf_shadingobject.h" |
| #include "core/fpdfapi/page/cpdf_shadingpattern.h" |
| #include "core/fpdfapi/page/cpdf_textobject.h" |
| #include "core/fpdfapi/page/cpdf_tilingpattern.h" |
| #include "core/fpdfapi/parser/cpdf_array.h" |
| #include "core/fpdfapi/parser/cpdf_dictionary.h" |
| #include "core/fpdfapi/parser/cpdf_document.h" |
| #include "core/fpdfapi/render/cpdf_charposlist.h" |
| #include "core/fpdfapi/render/cpdf_devicebuffer.h" |
| #include "core/fpdfapi/render/cpdf_dibbase.h" |
| #include "core/fpdfapi/render/cpdf_docrenderdata.h" |
| #include "core/fpdfapi/render/cpdf_imagerenderer.h" |
| #include "core/fpdfapi/render/cpdf_pagerendercache.h" |
| #include "core/fpdfapi/render/cpdf_rendercontext.h" |
| #include "core/fpdfapi/render/cpdf_renderoptions.h" |
| #include "core/fpdfapi/render/cpdf_scaledrenderbuffer.h" |
| #include "core/fpdfapi/render/cpdf_textrenderer.h" |
| #include "core/fpdfapi/render/cpdf_transferfunc.h" |
| #include "core/fpdfapi/render/cpdf_type3cache.h" |
| #include "core/fpdfdoc/cpdf_occontext.h" |
| #include "core/fxcrt/autorestorer.h" |
| #include "core/fxcrt/fx_safe_types.h" |
| #include "core/fxcrt/fx_system.h" |
| #include "core/fxcrt/maybe_owned.h" |
| #include "core/fxge/cfx_defaultrenderdevice.h" |
| #include "core/fxge/cfx_graphstatedata.h" |
| #include "core/fxge/cfx_pathdata.h" |
| #include "core/fxge/cfx_renderdevice.h" |
| #include "core/fxge/dib/cfx_dibitmap.h" |
| #include "core/fxge/renderdevicedriver_iface.h" |
| #include "third_party/base/compiler_specific.h" |
| #include "third_party/base/logging.h" |
| #include "third_party/base/numerics/safe_math.h" |
| #include "third_party/base/ptr_util.h" |
| #include "third_party/base/stl_util.h" |
| |
| #ifdef _SKIA_SUPPORT_ |
| #include "core/fxge/skia/fx_skia_device.h" |
| #endif |
| |
| namespace { |
| |
| constexpr int kShadingSteps = 256; |
| constexpr int kRenderMaxRecursionDepth = 64; |
| int g_CurrentRecursionDepth = 0; |
| |
| void ReleaseCachedType3(CPDF_Type3Font* pFont) { |
| CPDF_Document* pDoc = pFont->GetDocument(); |
| if (!pDoc) |
| return; |
| |
| pDoc->GetRenderData()->MaybePurgeCachedType3(pFont); |
| pDoc->GetPageData()->ReleaseFont(pFont->GetFontDict()); |
| } |
| |
| class CPDF_RefType3Cache { |
| public: |
| explicit CPDF_RefType3Cache(CPDF_Type3Font* pType3Font) |
| : m_dwCount(0), m_pType3Font(pType3Font) {} |
| |
| ~CPDF_RefType3Cache() { |
| while (m_dwCount--) |
| ReleaseCachedType3(m_pType3Font.Get()); |
| } |
| |
| uint32_t m_dwCount; |
| UnownedPtr<CPDF_Type3Font> const m_pType3Font; |
| }; |
| |
| uint32_t CountOutputsFromFunctions( |
| const std::vector<std::unique_ptr<CPDF_Function>>& funcs) { |
| FX_SAFE_UINT32 total = 0; |
| for (const auto& func : funcs) { |
| if (func) |
| total += func->CountOutputs(); |
| } |
| return total.ValueOrDefault(0); |
| } |
| |
| uint32_t GetValidatedOutputsCount( |
| const std::vector<std::unique_ptr<CPDF_Function>>& funcs, |
| const CPDF_ColorSpace* pCS) { |
| uint32_t funcs_outputs = CountOutputsFromFunctions(funcs); |
| return funcs_outputs ? std::max(funcs_outputs, pCS->CountComponents()) : 0; |
| } |
| |
| void GetShadingSteps(float t_min, |
| float t_max, |
| const std::vector<std::unique_ptr<CPDF_Function>>& funcs, |
| const CPDF_ColorSpace* pCS, |
| int alpha, |
| size_t results_count, |
| uint32_t* rgb_array) { |
| ASSERT(results_count >= CountOutputsFromFunctions(funcs)); |
| ASSERT(results_count >= pCS->CountComponents()); |
| std::vector<float> result_array(results_count); |
| float diff = t_max - t_min; |
| for (int i = 0; i < kShadingSteps; ++i) { |
| float input = diff * i / kShadingSteps + t_min; |
| int offset = 0; |
| for (const auto& func : funcs) { |
| if (func) { |
| int nresults = 0; |
| if (func->Call(&input, 1, &result_array[offset], &nresults)) |
| offset += nresults; |
| } |
| } |
| float R = 0.0f; |
| float G = 0.0f; |
| float B = 0.0f; |
| pCS->GetRGB(result_array.data(), &R, &G, &B); |
| rgb_array[i] = |
| FXARGB_TODIB(ArgbEncode(alpha, FXSYS_round(R * 255), |
| FXSYS_round(G * 255), FXSYS_round(B * 255))); |
| } |
| } |
| |
| void DrawAxialShading(const RetainPtr<CFX_DIBitmap>& pBitmap, |
| const CFX_Matrix& mtObject2Bitmap, |
| const CPDF_Dictionary* pDict, |
| const std::vector<std::unique_ptr<CPDF_Function>>& funcs, |
| const CPDF_ColorSpace* pCS, |
| int alpha) { |
| ASSERT(pBitmap->GetFormat() == FXDIB_Argb); |
| |
| const uint32_t total_results = GetValidatedOutputsCount(funcs, pCS); |
| if (total_results == 0) |
| return; |
| |
| const CPDF_Array* pCoords = pDict->GetArrayFor("Coords"); |
| if (!pCoords) |
| return; |
| |
| float start_x = pCoords->GetNumberAt(0); |
| float start_y = pCoords->GetNumberAt(1); |
| float end_x = pCoords->GetNumberAt(2); |
| float end_y = pCoords->GetNumberAt(3); |
| float t_min = 0; |
| float t_max = 1.0f; |
| const CPDF_Array* pArray = pDict->GetArrayFor("Domain"); |
| if (pArray) { |
| t_min = pArray->GetNumberAt(0); |
| t_max = pArray->GetNumberAt(1); |
| } |
| bool bStartExtend = false; |
| bool bEndExtend = false; |
| pArray = pDict->GetArrayFor("Extend"); |
| if (pArray) { |
| bStartExtend = !!pArray->GetIntegerAt(0); |
| bEndExtend = !!pArray->GetIntegerAt(1); |
| } |
| int width = pBitmap->GetWidth(); |
| int height = pBitmap->GetHeight(); |
| float x_span = end_x - start_x; |
| float y_span = end_y - start_y; |
| float axis_len_square = (x_span * x_span) + (y_span * y_span); |
| |
| uint32_t rgb_array[kShadingSteps]; |
| GetShadingSteps(t_min, t_max, funcs, pCS, alpha, total_results, rgb_array); |
| |
| int pitch = pBitmap->GetPitch(); |
| CFX_Matrix matrix = mtObject2Bitmap.GetInverse(); |
| for (int row = 0; row < height; row++) { |
| uint32_t* dib_buf = |
| reinterpret_cast<uint32_t*>(pBitmap->GetBuffer() + row * pitch); |
| for (int column = 0; column < width; column++) { |
| CFX_PointF pos = matrix.Transform( |
| CFX_PointF(static_cast<float>(column), static_cast<float>(row))); |
| float scale = |
| (((pos.x - start_x) * x_span) + ((pos.y - start_y) * y_span)) / |
| axis_len_square; |
| int index = (int32_t)(scale * (kShadingSteps - 1)); |
| if (index < 0) { |
| if (!bStartExtend) |
| continue; |
| |
| index = 0; |
| } else if (index >= kShadingSteps) { |
| if (!bEndExtend) |
| continue; |
| |
| index = kShadingSteps - 1; |
| } |
| dib_buf[column] = rgb_array[index]; |
| } |
| } |
| } |
| |
| void DrawRadialShading(const RetainPtr<CFX_DIBitmap>& pBitmap, |
| const CFX_Matrix& mtObject2Bitmap, |
| const CPDF_Dictionary* pDict, |
| const std::vector<std::unique_ptr<CPDF_Function>>& funcs, |
| const CPDF_ColorSpace* pCS, |
| int alpha) { |
| ASSERT(pBitmap->GetFormat() == FXDIB_Argb); |
| |
| const uint32_t total_results = GetValidatedOutputsCount(funcs, pCS); |
| if (total_results == 0) |
| return; |
| |
| const CPDF_Array* pCoords = pDict->GetArrayFor("Coords"); |
| if (!pCoords) |
| return; |
| |
| float start_x = pCoords->GetNumberAt(0); |
| float start_y = pCoords->GetNumberAt(1); |
| float start_r = pCoords->GetNumberAt(2); |
| float end_x = pCoords->GetNumberAt(3); |
| float end_y = pCoords->GetNumberAt(4); |
| float end_r = pCoords->GetNumberAt(5); |
| float t_min = 0; |
| float t_max = 1.0f; |
| const CPDF_Array* pArray = pDict->GetArrayFor("Domain"); |
| if (pArray) { |
| t_min = pArray->GetNumberAt(0); |
| t_max = pArray->GetNumberAt(1); |
| } |
| bool bStartExtend = false; |
| bool bEndExtend = false; |
| pArray = pDict->GetArrayFor("Extend"); |
| if (pArray) { |
| bStartExtend = !!pArray->GetIntegerAt(0); |
| bEndExtend = !!pArray->GetIntegerAt(1); |
| } |
| |
| uint32_t rgb_array[kShadingSteps]; |
| GetShadingSteps(t_min, t_max, funcs, pCS, alpha, total_results, rgb_array); |
| |
| const float dx = end_x - start_x; |
| const float dy = end_y - start_y; |
| const float dr = end_r - start_r; |
| const float a = dx * dx + dy * dy - dr * dr; |
| const bool a_is_float_zero = IsFloatZero(a); |
| |
| int width = pBitmap->GetWidth(); |
| int height = pBitmap->GetHeight(); |
| int pitch = pBitmap->GetPitch(); |
| |
| bool bDecreasing = |
| (dr < 0 && static_cast<int>(sqrt(dx * dx + dy * dy)) < -dr); |
| |
| CFX_Matrix matrix = mtObject2Bitmap.GetInverse(); |
| for (int row = 0; row < height; row++) { |
| uint32_t* dib_buf = |
| reinterpret_cast<uint32_t*>(pBitmap->GetBuffer() + row * pitch); |
| for (int column = 0; column < width; column++) { |
| CFX_PointF pos = matrix.Transform( |
| CFX_PointF(static_cast<float>(column), static_cast<float>(row))); |
| float pos_dx = pos.x - start_x; |
| float pos_dy = pos.y - start_y; |
| float b = -2 * (pos_dx * dx + pos_dy * dy + start_r * dr); |
| float c = pos_dx * pos_dx + pos_dy * pos_dy - start_r * start_r; |
| float s; |
| if (IsFloatZero(b)) { |
| s = sqrt(-c / a); |
| } else if (a_is_float_zero) { |
| s = -c / b; |
| } else { |
| float b2_4ac = (b * b) - 4 * (a * c); |
| if (b2_4ac < 0) |
| continue; |
| |
| float root = sqrt(b2_4ac); |
| float s1 = (-b - root) / (2 * a); |
| float s2 = (-b + root) / (2 * a); |
| if (a <= 0) |
| std::swap(s1, s2); |
| if (bDecreasing) |
| s = (s1 >= 0 || bStartExtend) ? s1 : s2; |
| else |
| s = (s2 <= 1.0f || bEndExtend) ? s2 : s1; |
| |
| if (start_r + s * dr < 0) |
| continue; |
| } |
| |
| int index = static_cast<int32_t>(s * (kShadingSteps - 1)); |
| if (index < 0) { |
| if (!bStartExtend) |
| continue; |
| index = 0; |
| } else if (index >= kShadingSteps) { |
| if (!bEndExtend) |
| continue; |
| index = kShadingSteps - 1; |
| } |
| dib_buf[column] = rgb_array[index]; |
| } |
| } |
| } |
| |
| void DrawFuncShading(const RetainPtr<CFX_DIBitmap>& pBitmap, |
| const CFX_Matrix& mtObject2Bitmap, |
| const CPDF_Dictionary* pDict, |
| const std::vector<std::unique_ptr<CPDF_Function>>& funcs, |
| const CPDF_ColorSpace* pCS, |
| int alpha) { |
| ASSERT(pBitmap->GetFormat() == FXDIB_Argb); |
| |
| const uint32_t total_results = GetValidatedOutputsCount(funcs, pCS); |
| if (total_results == 0) |
| return; |
| |
| const CPDF_Array* pDomain = pDict->GetArrayFor("Domain"); |
| float xmin = 0.0f; |
| float ymin = 0.0f; |
| float xmax = 1.0f; |
| float ymax = 1.0f; |
| if (pDomain) { |
| xmin = pDomain->GetNumberAt(0); |
| xmax = pDomain->GetNumberAt(1); |
| ymin = pDomain->GetNumberAt(2); |
| ymax = pDomain->GetNumberAt(3); |
| } |
| CFX_Matrix mtDomain2Target = pDict->GetMatrixFor("Matrix"); |
| CFX_Matrix matrix = |
| mtObject2Bitmap.GetInverse() * mtDomain2Target.GetInverse(); |
| int width = pBitmap->GetWidth(); |
| int height = pBitmap->GetHeight(); |
| int pitch = pBitmap->GetPitch(); |
| |
| ASSERT(total_results >= CountOutputsFromFunctions(funcs)); |
| ASSERT(total_results >= pCS->CountComponents()); |
| std::vector<float> result_array(total_results); |
| for (int row = 0; row < height; ++row) { |
| uint32_t* dib_buf = (uint32_t*)(pBitmap->GetBuffer() + row * pitch); |
| for (int column = 0; column < width; column++) { |
| CFX_PointF pos = matrix.Transform( |
| CFX_PointF(static_cast<float>(column), static_cast<float>(row))); |
| if (pos.x < xmin || pos.x > xmax || pos.y < ymin || pos.y > ymax) |
| continue; |
| |
| float input[] = {pos.x, pos.y}; |
| int offset = 0; |
| for (const auto& func : funcs) { |
| if (func) { |
| int nresults; |
| if (func->Call(input, 2, &result_array[offset], &nresults)) |
| offset += nresults; |
| } |
| } |
| |
| float R = 0.0f; |
| float G = 0.0f; |
| float B = 0.0f; |
| pCS->GetRGB(result_array.data(), &R, &G, &B); |
| dib_buf[column] = FXARGB_TODIB(ArgbEncode( |
| alpha, (int32_t)(R * 255), (int32_t)(G * 255), (int32_t)(B * 255))); |
| } |
| } |
| } |
| |
| bool GetScanlineIntersect(int y, |
| const CFX_PointF& first, |
| const CFX_PointF& second, |
| float* x) { |
| if (first.y == second.y) |
| return false; |
| |
| if (first.y < second.y) { |
| if (y < first.y || y > second.y) |
| return false; |
| } else if (y < second.y || y > first.y) { |
| return false; |
| } |
| *x = first.x + ((second.x - first.x) * (y - first.y) / (second.y - first.y)); |
| return true; |
| } |
| |
| void DrawGouraud(const RetainPtr<CFX_DIBitmap>& pBitmap, |
| int alpha, |
| CPDF_MeshVertex triangle[3]) { |
| float min_y = triangle[0].position.y; |
| float max_y = triangle[0].position.y; |
| for (int i = 1; i < 3; i++) { |
| min_y = std::min(min_y, triangle[i].position.y); |
| max_y = std::max(max_y, triangle[i].position.y); |
| } |
| if (min_y == max_y) |
| return; |
| |
| int min_yi = std::max(static_cast<int>(floor(min_y)), 0); |
| int max_yi = static_cast<int>(ceil(max_y)); |
| |
| if (max_yi >= pBitmap->GetHeight()) |
| max_yi = pBitmap->GetHeight() - 1; |
| |
| for (int y = min_yi; y <= max_yi; y++) { |
| int nIntersects = 0; |
| float inter_x[3]; |
| float r[3]; |
| float g[3]; |
| float b[3]; |
| for (int i = 0; i < 3; i++) { |
| CPDF_MeshVertex& vertex1 = triangle[i]; |
| CPDF_MeshVertex& vertex2 = triangle[(i + 1) % 3]; |
| CFX_PointF& position1 = vertex1.position; |
| CFX_PointF& position2 = vertex2.position; |
| bool bIntersect = |
| GetScanlineIntersect(y, position1, position2, &inter_x[nIntersects]); |
| if (!bIntersect) |
| continue; |
| |
| float y_dist = (y - position1.y) / (position2.y - position1.y); |
| r[nIntersects] = vertex1.r + ((vertex2.r - vertex1.r) * y_dist); |
| g[nIntersects] = vertex1.g + ((vertex2.g - vertex1.g) * y_dist); |
| b[nIntersects] = vertex1.b + ((vertex2.b - vertex1.b) * y_dist); |
| nIntersects++; |
| } |
| if (nIntersects != 2) |
| continue; |
| |
| int min_x, max_x, start_index, end_index; |
| if (inter_x[0] < inter_x[1]) { |
| min_x = (int)floor(inter_x[0]); |
| max_x = (int)ceil(inter_x[1]); |
| start_index = 0; |
| end_index = 1; |
| } else { |
| min_x = (int)floor(inter_x[1]); |
| max_x = (int)ceil(inter_x[0]); |
| start_index = 1; |
| end_index = 0; |
| } |
| |
| int start_x = std::max(min_x, 0); |
| int end_x = max_x; |
| if (end_x > pBitmap->GetWidth()) |
| end_x = pBitmap->GetWidth(); |
| |
| uint8_t* dib_buf = |
| pBitmap->GetBuffer() + y * pBitmap->GetPitch() + start_x * 4; |
| float r_unit = (r[end_index] - r[start_index]) / (max_x - min_x); |
| float g_unit = (g[end_index] - g[start_index]) / (max_x - min_x); |
| float b_unit = (b[end_index] - b[start_index]) / (max_x - min_x); |
| float R = r[start_index] + (start_x - min_x) * r_unit; |
| float G = g[start_index] + (start_x - min_x) * g_unit; |
| float B = b[start_index] + (start_x - min_x) * b_unit; |
| for (int x = start_x; x < end_x; x++) { |
| R += r_unit; |
| G += g_unit; |
| B += b_unit; |
| FXARGB_SETDIB(dib_buf, |
| ArgbEncode(alpha, (int32_t)(R * 255), (int32_t)(G * 255), |
| (int32_t)(B * 255))); |
| dib_buf += 4; |
| } |
| } |
| } |
| |
| void DrawFreeGouraudShading( |
| const RetainPtr<CFX_DIBitmap>& pBitmap, |
| const CFX_Matrix& mtObject2Bitmap, |
| const CPDF_Stream* pShadingStream, |
| const std::vector<std::unique_ptr<CPDF_Function>>& funcs, |
| const CPDF_ColorSpace* pCS, |
| int alpha) { |
| ASSERT(pBitmap->GetFormat() == FXDIB_Argb); |
| |
| CPDF_MeshStream stream(kFreeFormGouraudTriangleMeshShading, funcs, |
| pShadingStream, pCS); |
| if (!stream.Load()) |
| return; |
| |
| CPDF_MeshVertex triangle[3]; |
| memset(triangle, 0, sizeof(triangle)); |
| |
| while (!stream.BitStream()->IsEOF()) { |
| CPDF_MeshVertex vertex; |
| uint32_t flag; |
| if (!stream.ReadVertex(mtObject2Bitmap, &vertex, &flag)) |
| return; |
| |
| if (flag == 0) { |
| triangle[0] = vertex; |
| for (int j = 1; j < 3; j++) { |
| uint32_t tflag; |
| if (!stream.ReadVertex(mtObject2Bitmap, &triangle[j], &tflag)) |
| return; |
| } |
| } else { |
| if (flag == 1) |
| triangle[0] = triangle[1]; |
| |
| triangle[1] = triangle[2]; |
| triangle[2] = vertex; |
| } |
| DrawGouraud(pBitmap, alpha, triangle); |
| } |
| } |
| |
| void DrawLatticeGouraudShading( |
| const RetainPtr<CFX_DIBitmap>& pBitmap, |
| const CFX_Matrix& mtObject2Bitmap, |
| const CPDF_Stream* pShadingStream, |
| const std::vector<std::unique_ptr<CPDF_Function>>& funcs, |
| const CPDF_ColorSpace* pCS, |
| int alpha) { |
| ASSERT(pBitmap->GetFormat() == FXDIB_Argb); |
| |
| int row_verts = pShadingStream->GetDict()->GetIntegerFor("VerticesPerRow"); |
| if (row_verts < 2) |
| return; |
| |
| CPDF_MeshStream stream(kLatticeFormGouraudTriangleMeshShading, funcs, |
| pShadingStream, pCS); |
| if (!stream.Load()) |
| return; |
| |
| std::vector<CPDF_MeshVertex> vertices[2]; |
| vertices[0] = stream.ReadVertexRow(mtObject2Bitmap, row_verts); |
| if (vertices[0].empty()) |
| return; |
| |
| int last_index = 0; |
| while (1) { |
| vertices[1 - last_index] = stream.ReadVertexRow(mtObject2Bitmap, row_verts); |
| if (vertices[1 - last_index].empty()) |
| return; |
| |
| CPDF_MeshVertex triangle[3]; |
| for (int i = 1; i < row_verts; ++i) { |
| triangle[0] = vertices[last_index][i]; |
| triangle[1] = vertices[1 - last_index][i - 1]; |
| triangle[2] = vertices[last_index][i - 1]; |
| DrawGouraud(pBitmap, alpha, triangle); |
| triangle[2] = vertices[1 - last_index][i]; |
| DrawGouraud(pBitmap, alpha, triangle); |
| } |
| last_index = 1 - last_index; |
| } |
| } |
| |
| struct Coon_BezierCoeff { |
| float a, b, c, d; |
| void FromPoints(float p0, float p1, float p2, float p3) { |
| a = -p0 + 3 * p1 - 3 * p2 + p3; |
| b = 3 * p0 - 6 * p1 + 3 * p2; |
| c = -3 * p0 + 3 * p1; |
| d = p0; |
| } |
| Coon_BezierCoeff first_half() { |
| Coon_BezierCoeff result; |
| result.a = a / 8; |
| result.b = b / 4; |
| result.c = c / 2; |
| result.d = d; |
| return result; |
| } |
| Coon_BezierCoeff second_half() { |
| Coon_BezierCoeff result; |
| result.a = a / 8; |
| result.b = 3 * a / 8 + b / 4; |
| result.c = 3 * a / 8 + b / 2 + c / 2; |
| result.d = a / 8 + b / 4 + c / 2 + d; |
| return result; |
| } |
| void GetPoints(float p[4]) { |
| p[0] = d; |
| p[1] = c / 3 + p[0]; |
| p[2] = b / 3 - p[0] + 2 * p[1]; |
| p[3] = a + p[0] - 3 * p[1] + 3 * p[2]; |
| } |
| void GetPointsReverse(float p[4]) { |
| p[3] = d; |
| p[2] = c / 3 + p[3]; |
| p[1] = b / 3 - p[3] + 2 * p[2]; |
| p[0] = a + p[3] - 3 * p[2] + 3 * p[1]; |
| } |
| void BezierInterpol(Coon_BezierCoeff& C1, |
| Coon_BezierCoeff& C2, |
| Coon_BezierCoeff& D1, |
| Coon_BezierCoeff& D2) { |
| a = (D1.a + D2.a) / 2; |
| b = (D1.b + D2.b) / 2; |
| c = (D1.c + D2.c) / 2 - (C1.a / 8 + C1.b / 4 + C1.c / 2) + |
| (C2.a / 8 + C2.b / 4) + (-C1.d + D2.d) / 2 - (C2.a + C2.b) / 2; |
| d = C1.a / 8 + C1.b / 4 + C1.c / 2 + C1.d; |
| } |
| float Distance() { |
| float dis = a + b + c; |
| return dis < 0 ? -dis : dis; |
| } |
| }; |
| |
| struct Coon_Bezier { |
| Coon_BezierCoeff x, y; |
| void FromPoints(float x0, |
| float y0, |
| float x1, |
| float y1, |
| float x2, |
| float y2, |
| float x3, |
| float y3) { |
| x.FromPoints(x0, x1, x2, x3); |
| y.FromPoints(y0, y1, y2, y3); |
| } |
| |
| Coon_Bezier first_half() { |
| Coon_Bezier result; |
| result.x = x.first_half(); |
| result.y = y.first_half(); |
| return result; |
| } |
| |
| Coon_Bezier second_half() { |
| Coon_Bezier result; |
| result.x = x.second_half(); |
| result.y = y.second_half(); |
| return result; |
| } |
| |
| void BezierInterpol(Coon_Bezier& C1, |
| Coon_Bezier& C2, |
| Coon_Bezier& D1, |
| Coon_Bezier& D2) { |
| x.BezierInterpol(C1.x, C2.x, D1.x, D2.x); |
| y.BezierInterpol(C1.y, C2.y, D1.y, D2.y); |
| } |
| |
| void GetPoints(std::vector<FX_PATHPOINT>& pPoints, size_t start_idx) { |
| float p[4]; |
| int i; |
| x.GetPoints(p); |
| for (i = 0; i < 4; i++) |
| pPoints[start_idx + i].m_Point.x = p[i]; |
| |
| y.GetPoints(p); |
| for (i = 0; i < 4; i++) |
| pPoints[start_idx + i].m_Point.y = p[i]; |
| } |
| |
| void GetPointsReverse(std::vector<FX_PATHPOINT>& pPoints, size_t start_idx) { |
| float p[4]; |
| int i; |
| x.GetPointsReverse(p); |
| for (i = 0; i < 4; i++) |
| pPoints[i + start_idx].m_Point.x = p[i]; |
| |
| y.GetPointsReverse(p); |
| for (i = 0; i < 4; i++) |
| pPoints[i + start_idx].m_Point.y = p[i]; |
| } |
| |
| float Distance() { return x.Distance() + y.Distance(); } |
| }; |
| |
| int Interpolate(int p1, int p2, int delta1, int delta2, bool* overflow) { |
| pdfium::base::CheckedNumeric<int> p = p2; |
| p -= p1; |
| p *= delta1; |
| p /= delta2; |
| p += p1; |
| if (!p.IsValid()) |
| *overflow = true; |
| return p.ValueOrDefault(0); |
| } |
| |
| int BiInterpolImpl(int c0, |
| int c1, |
| int c2, |
| int c3, |
| int x, |
| int y, |
| int x_scale, |
| int y_scale, |
| bool* overflow) { |
| int x1 = Interpolate(c0, c3, x, x_scale, overflow); |
| int x2 = Interpolate(c1, c2, x, x_scale, overflow); |
| return Interpolate(x1, x2, y, y_scale, overflow); |
| } |
| |
| struct Coon_Color { |
| Coon_Color() { memset(comp, 0, sizeof(int) * 3); } |
| |
| // Returns true if successful, false if overflow detected. |
| bool BiInterpol(Coon_Color colors[4], |
| int x, |
| int y, |
| int x_scale, |
| int y_scale) { |
| bool overflow = false; |
| for (int i = 0; i < 3; i++) { |
| comp[i] = BiInterpolImpl(colors[0].comp[i], colors[1].comp[i], |
| colors[2].comp[i], colors[3].comp[i], x, y, |
| x_scale, y_scale, &overflow); |
| } |
| return !overflow; |
| } |
| |
| int Distance(Coon_Color& o) { |
| return std::max({abs(comp[0] - o.comp[0]), abs(comp[1] - o.comp[1]), |
| abs(comp[2] - o.comp[2])}); |
| } |
| |
| int comp[3]; |
| }; |
| |
| #define COONCOLOR_THRESHOLD 4 |
| struct CPDF_PatchDrawer { |
| void Draw(int x_scale, |
| int y_scale, |
| int left, |
| int bottom, |
| Coon_Bezier C1, |
| Coon_Bezier C2, |
| Coon_Bezier D1, |
| Coon_Bezier D2) { |
| bool bSmall = C1.Distance() < 2 && C2.Distance() < 2 && D1.Distance() < 2 && |
| D2.Distance() < 2; |
| Coon_Color div_colors[4]; |
| int d_bottom = 0; |
| int d_left = 0; |
| int d_top = 0; |
| int d_right = 0; |
| if (!div_colors[0].BiInterpol(patch_colors, left, bottom, x_scale, |
| y_scale)) { |
| return; |
| } |
| if (!bSmall) { |
| if (!div_colors[1].BiInterpol(patch_colors, left, bottom + 1, x_scale, |
| y_scale)) { |
| return; |
| } |
| if (!div_colors[2].BiInterpol(patch_colors, left + 1, bottom + 1, x_scale, |
| y_scale)) { |
| return; |
| } |
| if (!div_colors[3].BiInterpol(patch_colors, left + 1, bottom, x_scale, |
| y_scale)) { |
| return; |
| } |
| d_bottom = div_colors[3].Distance(div_colors[0]); |
| d_left = div_colors[1].Distance(div_colors[0]); |
| d_top = div_colors[1].Distance(div_colors[2]); |
| d_right = div_colors[2].Distance(div_colors[3]); |
| } |
| |
| if (bSmall || |
| (d_bottom < COONCOLOR_THRESHOLD && d_left < COONCOLOR_THRESHOLD && |
| d_top < COONCOLOR_THRESHOLD && d_right < COONCOLOR_THRESHOLD)) { |
| std::vector<FX_PATHPOINT>& pPoints = path.GetPoints(); |
| C1.GetPoints(pPoints, 0); |
| D2.GetPoints(pPoints, 3); |
| C2.GetPointsReverse(pPoints, 6); |
| D1.GetPointsReverse(pPoints, 9); |
| int fillFlags = FXFILL_WINDING | FXFILL_FULLCOVER; |
| if (bNoPathSmooth) |
| fillFlags |= FXFILL_NOPATHSMOOTH; |
| pDevice->DrawPath( |
| &path, nullptr, nullptr, |
| ArgbEncode(alpha, div_colors[0].comp[0], div_colors[0].comp[1], |
| div_colors[0].comp[2]), |
| 0, fillFlags); |
| } else { |
| if (d_bottom < COONCOLOR_THRESHOLD && d_top < COONCOLOR_THRESHOLD) { |
| Coon_Bezier m1; |
| m1.BezierInterpol(D1, D2, C1, C2); |
| y_scale *= 2; |
| bottom *= 2; |
| Draw(x_scale, y_scale, left, bottom, C1, m1, D1.first_half(), |
| D2.first_half()); |
| Draw(x_scale, y_scale, left, bottom + 1, m1, C2, D1.second_half(), |
| D2.second_half()); |
| } else if (d_left < COONCOLOR_THRESHOLD && |
| d_right < COONCOLOR_THRESHOLD) { |
| Coon_Bezier m2; |
| m2.BezierInterpol(C1, C2, D1, D2); |
| x_scale *= 2; |
| left *= 2; |
| Draw(x_scale, y_scale, left, bottom, C1.first_half(), C2.first_half(), |
| D1, m2); |
| Draw(x_scale, y_scale, left + 1, bottom, C1.second_half(), |
| C2.second_half(), m2, D2); |
| } else { |
| Coon_Bezier m1, m2; |
| m1.BezierInterpol(D1, D2, C1, C2); |
| m2.BezierInterpol(C1, C2, D1, D2); |
| Coon_Bezier m1f = m1.first_half(); |
| Coon_Bezier m1s = m1.second_half(); |
| Coon_Bezier m2f = m2.first_half(); |
| Coon_Bezier m2s = m2.second_half(); |
| x_scale *= 2; |
| y_scale *= 2; |
| left *= 2; |
| bottom *= 2; |
| Draw(x_scale, y_scale, left, bottom, C1.first_half(), m1f, |
| D1.first_half(), m2f); |
| Draw(x_scale, y_scale, left, bottom + 1, m1f, C2.first_half(), |
| D1.second_half(), m2s); |
| Draw(x_scale, y_scale, left + 1, bottom, C1.second_half(), m1s, m2f, |
| D2.first_half()); |
| Draw(x_scale, y_scale, left + 1, bottom + 1, m1s, C2.second_half(), m2s, |
| D2.second_half()); |
| } |
| } |
| } |
| |
| int max_delta; |
| CFX_PathData path; |
| CFX_RenderDevice* pDevice; |
| int bNoPathSmooth; |
| int alpha; |
| Coon_Color patch_colors[4]; |
| }; |
| |
| void DrawCoonPatchMeshes( |
| ShadingType type, |
| const RetainPtr<CFX_DIBitmap>& pBitmap, |
| const CFX_Matrix& mtObject2Bitmap, |
| const CPDF_Stream* pShadingStream, |
| const std::vector<std::unique_ptr<CPDF_Function>>& funcs, |
| const CPDF_ColorSpace* pCS, |
| bool bNoPathSmooth, |
| int alpha) { |
| ASSERT(pBitmap->GetFormat() == FXDIB_Argb); |
| ASSERT(type == kCoonsPatchMeshShading || |
| type == kTensorProductPatchMeshShading); |
| |
| CFX_DefaultRenderDevice device; |
| device.Attach(pBitmap, false, nullptr, false); |
| CPDF_MeshStream stream(type, funcs, pShadingStream, pCS); |
| if (!stream.Load()) |
| return; |
| |
| CPDF_PatchDrawer patch; |
| patch.alpha = alpha; |
| patch.pDevice = &device; |
| patch.bNoPathSmooth = bNoPathSmooth; |
| |
| for (int i = 0; i < 13; i++) { |
| patch.path.AppendPoint( |
| CFX_PointF(), i == 0 ? FXPT_TYPE::MoveTo : FXPT_TYPE::BezierTo, false); |
| } |
| |
| CFX_PointF coords[16]; |
| int point_count = type == kTensorProductPatchMeshShading ? 16 : 12; |
| while (!stream.BitStream()->IsEOF()) { |
| if (!stream.CanReadFlag()) |
| break; |
| uint32_t flag = stream.ReadFlag(); |
| int iStartPoint = 0, iStartColor = 0, i = 0; |
| if (flag) { |
| iStartPoint = 4; |
| iStartColor = 2; |
| CFX_PointF tempCoords[4]; |
| for (i = 0; i < 4; i++) { |
| tempCoords[i] = coords[(flag * 3 + i) % 12]; |
| } |
| memcpy(coords, tempCoords, sizeof(tempCoords)); |
| Coon_Color tempColors[2]; |
| tempColors[0] = patch.patch_colors[flag]; |
| tempColors[1] = patch.patch_colors[(flag + 1) % 4]; |
| memcpy(patch.patch_colors, tempColors, sizeof(Coon_Color) * 2); |
| } |
| for (i = iStartPoint; i < point_count; i++) { |
| if (!stream.CanReadCoords()) |
| break; |
| coords[i] = mtObject2Bitmap.Transform(stream.ReadCoords()); |
| } |
| |
| for (i = iStartColor; i < 4; i++) { |
| if (!stream.CanReadColor()) |
| break; |
| |
| float r; |
| float g; |
| float b; |
| std::tie(r, g, b) = stream.ReadColor(); |
| |
| patch.patch_colors[i].comp[0] = (int32_t)(r * 255); |
| patch.patch_colors[i].comp[1] = (int32_t)(g * 255); |
| patch.patch_colors[i].comp[2] = (int32_t)(b * 255); |
| } |
| CFX_FloatRect bbox = CFX_FloatRect::GetBBox(coords, point_count); |
| if (bbox.right <= 0 || bbox.left >= (float)pBitmap->GetWidth() || |
| bbox.top <= 0 || bbox.bottom >= (float)pBitmap->GetHeight()) { |
| continue; |
| } |
| Coon_Bezier C1, C2, D1, D2; |
| C1.FromPoints(coords[0].x, coords[0].y, coords[11].x, coords[11].y, |
| coords[10].x, coords[10].y, coords[9].x, coords[9].y); |
| C2.FromPoints(coords[3].x, coords[3].y, coords[4].x, coords[4].y, |
| coords[5].x, coords[5].y, coords[6].x, coords[6].y); |
| D1.FromPoints(coords[0].x, coords[0].y, coords[1].x, coords[1].y, |
| coords[2].x, coords[2].y, coords[3].x, coords[3].y); |
| D2.FromPoints(coords[9].x, coords[9].y, coords[8].x, coords[8].y, |
| coords[7].x, coords[7].y, coords[6].x, coords[6].y); |
| patch.Draw(1, 1, 0, 0, C1, C2, D1, D2); |
| } |
| } |
| |
| RetainPtr<CFX_DIBitmap> DrawPatternBitmap( |
| CPDF_Document* pDoc, |
| CPDF_PageRenderCache* pCache, |
| CPDF_TilingPattern* pPattern, |
| const CFX_Matrix& mtObject2Device, |
| int width, |
| int height, |
| const CPDF_RenderOptions::Options& draw_options) { |
| auto pBitmap = pdfium::MakeRetain<CFX_DIBitmap>(); |
| if (!pBitmap->Create(width, height, |
| pPattern->colored() ? FXDIB_Argb : FXDIB_8bppMask)) { |
| return nullptr; |
| } |
| CFX_DefaultRenderDevice bitmap_device; |
| bitmap_device.Attach(pBitmap, false, nullptr, false); |
| pBitmap->Clear(0); |
| CFX_FloatRect cell_bbox = |
| pPattern->pattern_to_form()->TransformRect(pPattern->bbox()); |
| cell_bbox = mtObject2Device.TransformRect(cell_bbox); |
| CFX_FloatRect bitmap_rect(0.0f, 0.0f, (float)width, (float)height); |
| CFX_Matrix mtAdjust; |
| mtAdjust.MatchRect(bitmap_rect, cell_bbox); |
| |
| CFX_Matrix mtPattern2Bitmap = mtObject2Device * mtAdjust; |
| CPDF_RenderOptions options; |
| if (!pPattern->colored()) |
| options.SetColorMode(CPDF_RenderOptions::kAlpha); |
| |
| options.GetOptions() = draw_options; |
| options.GetOptions().bForceHalftone = true; |
| |
| CPDF_RenderContext context(pDoc, pCache); |
| context.AppendLayer(pPattern->form(), &mtPattern2Bitmap); |
| context.Render(&bitmap_device, &options, nullptr); |
| #if defined _SKIA_SUPPORT_PATHS_ |
| bitmap_device.Flush(true); |
| pBitmap->UnPreMultiply(); |
| #endif |
| return pBitmap; |
| } |
| |
| bool IsAvailableMatrix(const CFX_Matrix& matrix) { |
| if (matrix.a == 0 || matrix.d == 0) |
| return matrix.b != 0 && matrix.c != 0; |
| |
| if (matrix.b == 0 || matrix.c == 0) |
| return matrix.a != 0 && matrix.d != 0; |
| |
| return true; |
| } |
| |
| bool MissingFillColor(const CPDF_ColorState* pColorState) { |
| return !pColorState->HasRef() || pColorState->GetFillColor()->IsNull(); |
| } |
| |
| bool MissingStrokeColor(const CPDF_ColorState* pColorState) { |
| return !pColorState->HasRef() || pColorState->GetStrokeColor()->IsNull(); |
| } |
| |
| bool Type3CharMissingFillColor(const CPDF_Type3Char* pChar, |
| const CPDF_ColorState* pColorState) { |
| return pChar && (!pChar->colored() || |
| (pChar->colored() && MissingFillColor(pColorState))); |
| } |
| |
| bool Type3CharMissingStrokeColor(const CPDF_Type3Char* pChar, |
| const CPDF_ColorState* pColorState) { |
| return pChar && (!pChar->colored() || |
| (pChar->colored() && MissingStrokeColor(pColorState))); |
| } |
| |
| } // namespace |
| |
| CPDF_RenderStatus::CPDF_RenderStatus(CPDF_RenderContext* pContext, |
| CFX_RenderDevice* pDevice) |
| : m_pContext(pContext), m_pDevice(pDevice) {} |
| |
| CPDF_RenderStatus::~CPDF_RenderStatus() {} |
| |
| void CPDF_RenderStatus::Initialize(const CPDF_RenderStatus* pParentState, |
| const CPDF_GraphicStates* pInitialStates) { |
| m_bPrint = m_pDevice->GetDeviceClass() != FXDC_DISPLAY; |
| m_pPageResource = m_pContext->GetPageResources(); |
| if (pInitialStates && !m_pType3Char) { |
| m_InitialStates.CopyStates(*pInitialStates); |
| if (pParentState) { |
| if (!m_InitialStates.m_ColorState.HasFillColor()) { |
| m_InitialStates.m_ColorState.SetFillColorRef( |
| pParentState->m_InitialStates.m_ColorState.GetFillColorRef()); |
| *m_InitialStates.m_ColorState.GetMutableFillColor() = |
| *pParentState->m_InitialStates.m_ColorState.GetFillColor(); |
| } |
| if (!m_InitialStates.m_ColorState.HasStrokeColor()) { |
| m_InitialStates.m_ColorState.SetStrokeColorRef( |
| pParentState->m_InitialStates.m_ColorState.GetFillColorRef()); |
| *m_InitialStates.m_ColorState.GetMutableStrokeColor() = |
| *pParentState->m_InitialStates.m_ColorState.GetStrokeColor(); |
| } |
| } |
| } else { |
| m_InitialStates.DefaultStates(); |
| } |
| } |
| |
| void CPDF_RenderStatus::RenderObjectList( |
| const CPDF_PageObjectHolder* pObjectHolder, |
| const CFX_Matrix& mtObj2Device) { |
| #if defined _SKIA_SUPPORT_ |
| DebugVerifyDeviceIsPreMultiplied(); |
| #endif |
| CFX_FloatRect clip_rect = mtObj2Device.GetInverse().TransformRect( |
| CFX_FloatRect(m_pDevice->GetClipBox())); |
| for (const auto& pCurObj : *pObjectHolder->GetPageObjectList()) { |
| if (pCurObj.get() == m_pStopObj) { |
| m_bStopped = true; |
| return; |
| } |
| if (!pCurObj) |
| continue; |
| |
| if (pCurObj->GetRect().left > clip_rect.right || |
| pCurObj->GetRect().right < clip_rect.left || |
| pCurObj->GetRect().bottom > clip_rect.top || |
| pCurObj->GetRect().top < clip_rect.bottom) { |
| continue; |
| } |
| RenderSingleObject(pCurObj.get(), mtObj2Device); |
| if (m_bStopped) |
| return; |
| } |
| #if defined _SKIA_SUPPORT_ |
| DebugVerifyDeviceIsPreMultiplied(); |
| #endif |
| } |
| |
| void CPDF_RenderStatus::RenderSingleObject(CPDF_PageObject* pObj, |
| const CFX_Matrix& mtObj2Device) { |
| #if defined _SKIA_SUPPORT_ |
| DebugVerifyDeviceIsPreMultiplied(); |
| #endif |
| AutoRestorer<int> restorer(&g_CurrentRecursionDepth); |
| if (++g_CurrentRecursionDepth > kRenderMaxRecursionDepth) { |
| return; |
| } |
| m_pCurObj = pObj; |
| if (m_Options.GetOCContext() && |
| !m_Options.GetOCContext()->CheckObjectVisible(pObj)) { |
| return; |
| } |
| ProcessClipPath(pObj->m_ClipPath, mtObj2Device); |
| if (ProcessTransparency(pObj, mtObj2Device)) { |
| return; |
| } |
| ProcessObjectNoClip(pObj, mtObj2Device); |
| #if defined _SKIA_SUPPORT_ |
| DebugVerifyDeviceIsPreMultiplied(); |
| #endif |
| } |
| |
| bool CPDF_RenderStatus::ContinueSingleObject(CPDF_PageObject* pObj, |
| const CFX_Matrix& mtObj2Device, |
| PauseIndicatorIface* pPause) { |
| if (m_pImageRenderer) { |
| if (m_pImageRenderer->Continue(pPause)) |
| return true; |
| |
| if (!m_pImageRenderer->GetResult()) |
| DrawObjWithBackground(pObj, mtObj2Device); |
| m_pImageRenderer.reset(); |
| return false; |
| } |
| |
| m_pCurObj = pObj; |
| if (m_Options.GetOCContext() && |
| !m_Options.GetOCContext()->CheckObjectVisible(pObj)) { |
| return false; |
| } |
| |
| ProcessClipPath(pObj->m_ClipPath, mtObj2Device); |
| if (ProcessTransparency(pObj, mtObj2Device)) |
| return false; |
| |
| if (!pObj->IsImage()) { |
| ProcessObjectNoClip(pObj, mtObj2Device); |
| return false; |
| } |
| |
| m_pImageRenderer = pdfium::MakeUnique<CPDF_ImageRenderer>(); |
| if (!m_pImageRenderer->Start(this, pObj->AsImage(), mtObj2Device, false, |
| BlendMode::kNormal)) { |
| if (!m_pImageRenderer->GetResult()) |
| DrawObjWithBackground(pObj, mtObj2Device); |
| m_pImageRenderer.reset(); |
| return false; |
| } |
| return ContinueSingleObject(pObj, mtObj2Device, pPause); |
| } |
| |
| FX_RECT CPDF_RenderStatus::GetObjectClippedRect( |
| const CPDF_PageObject* pObj, |
| const CFX_Matrix& mtObj2Device) const { |
| FX_RECT rect = pObj->GetTransformedBBox(mtObj2Device); |
| rect.Intersect(m_pDevice->GetClipBox()); |
| return rect; |
| } |
| |
| void CPDF_RenderStatus::ProcessObjectNoClip(CPDF_PageObject* pObj, |
| const CFX_Matrix& mtObj2Device) { |
| #if defined _SKIA_SUPPORT_ |
| DebugVerifyDeviceIsPreMultiplied(); |
| #endif |
| bool bRet = false; |
| switch (pObj->GetType()) { |
| case CPDF_PageObject::TEXT: |
| bRet = ProcessText(pObj->AsText(), mtObj2Device, nullptr); |
| break; |
| case CPDF_PageObject::PATH: |
| bRet = ProcessPath(pObj->AsPath(), mtObj2Device); |
| break; |
| case CPDF_PageObject::IMAGE: |
| bRet = ProcessImage(pObj->AsImage(), mtObj2Device); |
| break; |
| case CPDF_PageObject::SHADING: |
| ProcessShading(pObj->AsShading(), mtObj2Device); |
| return; |
| case CPDF_PageObject::FORM: |
| bRet = ProcessForm(pObj->AsForm(), mtObj2Device); |
| break; |
| } |
| if (!bRet) |
| DrawObjWithBackground(pObj, mtObj2Device); |
| #if defined _SKIA_SUPPORT_ |
| DebugVerifyDeviceIsPreMultiplied(); |
| #endif |
| } |
| |
| bool CPDF_RenderStatus::DrawObjWithBlend(CPDF_PageObject* pObj, |
| const CFX_Matrix& mtObj2Device) { |
| switch (pObj->GetType()) { |
| case CPDF_PageObject::PATH: |
| return ProcessPath(pObj->AsPath(), mtObj2Device); |
| case CPDF_PageObject::IMAGE: |
| return ProcessImage(pObj->AsImage(), mtObj2Device); |
| case CPDF_PageObject::FORM: |
| return ProcessForm(pObj->AsForm(), mtObj2Device); |
| default: |
| return false; |
| } |
| } |
| |
| void CPDF_RenderStatus::DrawObjWithBackground(CPDF_PageObject* pObj, |
| const CFX_Matrix& mtObj2Device) { |
| FX_RECT rect = GetObjectClippedRect(pObj, mtObj2Device); |
| if (rect.IsEmpty()) |
| return; |
| |
| int res = 300; |
| if (pObj->IsImage() && |
| m_pDevice->GetDeviceCaps(FXDC_DEVICE_CLASS) == FXDC_PRINTER) { |
| res = 0; |
| } |
| CPDF_ScaledRenderBuffer buffer; |
| if (!buffer.Initialize(m_pContext.Get(), m_pDevice, rect, pObj, &m_Options, |
| res)) { |
| return; |
| } |
| CFX_Matrix matrix = mtObj2Device * buffer.GetMatrix(); |
| const CPDF_Dictionary* pFormResource = nullptr; |
| const CPDF_FormObject* pFormObj = pObj->AsForm(); |
| if (pFormObj) { |
| const CPDF_Dictionary* pFormDict = pFormObj->form()->GetDict(); |
| if (pFormDict) |
| pFormResource = pFormDict->GetDictFor("Resources"); |
| } |
| CPDF_RenderStatus status(m_pContext.Get(), buffer.GetDevice()); |
| status.SetOptions(m_Options); |
| status.SetDeviceMatrix(buffer.GetMatrix()); |
| status.SetTransparency(m_Transparency); |
| status.SetDropObjects(m_bDropObjects); |
| status.SetFormResource(pFormResource); |
| status.Initialize(nullptr, nullptr); |
| status.RenderSingleObject(pObj, matrix); |
| buffer.OutputToDevice(); |
| } |
| |
| bool CPDF_RenderStatus::ProcessForm(const CPDF_FormObject* pFormObj, |
| const CFX_Matrix& mtObj2Device) { |
| #if defined _SKIA_SUPPORT_ |
| DebugVerifyDeviceIsPreMultiplied(); |
| #endif |
| const CPDF_Dictionary* pOC = pFormObj->form()->GetDict()->GetDictFor("OC"); |
| if (pOC && m_Options.GetOCContext() && |
| !m_Options.GetOCContext()->CheckOCGVisible(pOC)) { |
| return true; |
| } |
| CFX_Matrix matrix = pFormObj->form_matrix() * mtObj2Device; |
| const CPDF_Dictionary* pFormDict = pFormObj->form()->GetDict(); |
| const CPDF_Dictionary* pResources = |
| pFormDict ? pFormDict->GetDictFor("Resources") : nullptr; |
| CPDF_RenderStatus status(m_pContext.Get(), m_pDevice); |
| status.SetOptions(m_Options); |
| status.SetStopObject(m_pStopObj.Get()); |
| status.SetTransparency(m_Transparency); |
| status.SetDropObjects(m_bDropObjects); |
| status.SetFormResource(pResources); |
| status.Initialize(this, pFormObj); |
| status.m_curBlend = m_curBlend; |
| { |
| CFX_RenderDevice::StateRestorer restorer(m_pDevice); |
| status.RenderObjectList(pFormObj->form(), matrix); |
| m_bStopped = status.m_bStopped; |
| } |
| #if defined _SKIA_SUPPORT_ |
| DebugVerifyDeviceIsPreMultiplied(); |
| #endif |
| return true; |
| } |
| |
| bool CPDF_RenderStatus::ProcessPath(CPDF_PathObject* pPathObj, |
| const CFX_Matrix& mtObj2Device) { |
| int FillType = pPathObj->filltype(); |
| bool bStroke = pPathObj->stroke(); |
| ProcessPathPattern(pPathObj, mtObj2Device, &FillType, &bStroke); |
| if (FillType == 0 && !bStroke) |
| return true; |
| |
| uint32_t fill_argb = FillType ? GetFillArgb(pPathObj) : 0; |
| uint32_t stroke_argb = bStroke ? GetStrokeArgb(pPathObj) : 0; |
| CFX_Matrix path_matrix = pPathObj->matrix() * mtObj2Device; |
| if (!IsAvailableMatrix(path_matrix)) |
| return true; |
| |
| if (FillType && m_Options.GetOptions().bRectAA) |
| FillType |= FXFILL_RECT_AA; |
| if (m_Options.GetOptions().bFillFullcover) |
| FillType |= FXFILL_FULLCOVER; |
| if (m_Options.GetOptions().bNoPathSmooth) |
| FillType |= FXFILL_NOPATHSMOOTH; |
| if (bStroke) |
| FillType |= FX_FILL_STROKE; |
| |
| const CPDF_PageObject* pPageObj = |
| static_cast<const CPDF_PageObject*>(pPathObj); |
| if (pPageObj->m_GeneralState.GetStrokeAdjust()) |
| FillType |= FX_STROKE_ADJUST; |
| if (m_pType3Char) |
| FillType |= FX_FILL_TEXT_MODE; |
| |
| CFX_GraphState graphState = pPathObj->m_GraphState; |
| if (m_Options.GetOptions().bThinLine) |
| graphState.SetLineWidth(0); |
| return m_pDevice->DrawPathWithBlend( |
| pPathObj->path().GetObject(), &path_matrix, graphState.GetObject(), |
| fill_argb, stroke_argb, FillType, m_curBlend); |
| } |
| |
| RetainPtr<CPDF_TransferFunc> CPDF_RenderStatus::GetTransferFunc( |
| const CPDF_Object* pObj) const { |
| ASSERT(pObj); |
| CPDF_DocRenderData* pDocCache = m_pContext->GetDocument()->GetRenderData(); |
| return pDocCache ? pDocCache->GetTransferFunc(pObj) : nullptr; |
| } |
| |
| FX_ARGB CPDF_RenderStatus::GetFillArgbInternal(CPDF_PageObject* pObj, |
| bool bType3) const { |
| const CPDF_ColorState* pColorState = &pObj->m_ColorState; |
| if (!bType3 && Type3CharMissingFillColor(m_pType3Char.Get(), pColorState)) |
| return m_T3FillColor; |
| |
| if (MissingFillColor(pColorState)) |
| pColorState = &m_InitialStates.m_ColorState; |
| |
| FX_COLORREF colorref = pColorState->GetFillColorRef(); |
| if (colorref == 0xFFFFFFFF) |
| return 0; |
| |
| int32_t alpha = |
| static_cast<int32_t>((pObj->m_GeneralState.GetFillAlpha() * 255)); |
| if (pObj->m_GeneralState.GetTR()) { |
| if (!pObj->m_GeneralState.GetTransferFunc()) { |
| pObj->m_GeneralState.SetTransferFunc( |
| GetTransferFunc(pObj->m_GeneralState.GetTR())); |
| } |
| if (pObj->m_GeneralState.GetTransferFunc()) { |
| colorref = |
| pObj->m_GeneralState.GetTransferFunc()->TranslateColor(colorref); |
| } |
| } |
| return m_Options.TranslateColor(AlphaAndColorRefToArgb(alpha, colorref)); |
| } |
| |
| FX_ARGB CPDF_RenderStatus::GetStrokeArgb(CPDF_PageObject* pObj) const { |
| const CPDF_ColorState* pColorState = &pObj->m_ColorState; |
| if (Type3CharMissingStrokeColor(m_pType3Char.Get(), pColorState)) |
| return m_T3FillColor; |
| |
| if (MissingStrokeColor(pColorState)) |
| pColorState = &m_InitialStates.m_ColorState; |
| |
| FX_COLORREF colorref = pColorState->GetStrokeColorRef(); |
| if (colorref == 0xFFFFFFFF) |
| return 0; |
| |
| int32_t alpha = static_cast<int32_t>(pObj->m_GeneralState.GetStrokeAlpha() * |
| 255); // not rounded. |
| if (pObj->m_GeneralState.GetTR()) { |
| if (!pObj->m_GeneralState.GetTransferFunc()) { |
| pObj->m_GeneralState.SetTransferFunc( |
| GetTransferFunc(pObj->m_GeneralState.GetTR())); |
| } |
| if (pObj->m_GeneralState.GetTransferFunc()) { |
| colorref = |
| pObj->m_GeneralState.GetTransferFunc()->TranslateColor(colorref); |
| } |
| } |
| return m_Options.TranslateColor(AlphaAndColorRefToArgb(alpha, colorref)); |
| } |
| |
| void CPDF_RenderStatus::ProcessClipPath(const CPDF_ClipPath& ClipPath, |
| const CFX_Matrix& mtObj2Device) { |
| if (!ClipPath.HasRef()) { |
| if (m_LastClipPath.HasRef()) { |
| m_pDevice->RestoreState(true); |
| m_LastClipPath.SetNull(); |
| } |
| return; |
| } |
| if (m_LastClipPath == ClipPath) |
| return; |
| |
| m_LastClipPath = ClipPath; |
| m_pDevice->RestoreState(true); |
| for (size_t i = 0; i < ClipPath.GetPathCount(); ++i) { |
| const CFX_PathData* pPathData = ClipPath.GetPath(i).GetObject(); |
| if (!pPathData) |
| continue; |
| |
| if (pPathData->GetPoints().empty()) { |
| CFX_PathData EmptyPath; |
| EmptyPath.AppendRect(-1, -1, 0, 0); |
| m_pDevice->SetClip_PathFill(&EmptyPath, nullptr, FXFILL_WINDING); |
| } else { |
| m_pDevice->SetClip_PathFill(pPathData, &mtObj2Device, |
| ClipPath.GetClipType(i)); |
| } |
| } |
| |
| if (ClipPath.GetTextCount() == 0) |
| return; |
| |
| if (m_pDevice->GetDeviceClass() == FXDC_DISPLAY && |
| !(m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_SOFT_CLIP)) { |
| return; |
| } |
| |
| std::unique_ptr<CFX_PathData> pTextClippingPath; |
| for (size_t i = 0; i < ClipPath.GetTextCount(); ++i) { |
| CPDF_TextObject* pText = ClipPath.GetText(i); |
| if (pText) { |
| if (!pTextClippingPath) |
| pTextClippingPath = pdfium::MakeUnique<CFX_PathData>(); |
| ProcessText(pText, mtObj2Device, pTextClippingPath.get()); |
| continue; |
| } |
| |
| if (!pTextClippingPath) |
| continue; |
| |
| int fill_mode = FXFILL_WINDING; |
| if (m_Options.GetOptions().bNoTextSmooth) |
| fill_mode |= FXFILL_NOPATHSMOOTH; |
| m_pDevice->SetClip_PathFill(pTextClippingPath.get(), nullptr, fill_mode); |
| pTextClippingPath.reset(); |
| } |
| } |
| |
| bool CPDF_RenderStatus::ClipPattern(const CPDF_PageObject* pPageObj, |
| const CFX_Matrix& mtObj2Device, |
| bool bStroke) { |
| if (pPageObj->IsPath()) |
| return SelectClipPath(pPageObj->AsPath(), mtObj2Device, bStroke); |
| if (pPageObj->IsImage()) { |
| m_pDevice->SetClip_Rect(pPageObj->GetTransformedBBox(mtObj2Device)); |
| return true; |
| } |
| return false; |
| } |
| |
| bool CPDF_RenderStatus::SelectClipPath(const CPDF_PathObject* pPathObj, |
| const CFX_Matrix& mtObj2Device, |
| bool bStroke) { |
| CFX_Matrix path_matrix = pPathObj->matrix() * mtObj2Device; |
| if (bStroke) { |
| CFX_GraphState graphState = pPathObj->m_GraphState; |
| if (m_Options.GetOptions().bThinLine) |
| graphState.SetLineWidth(0); |
| return m_pDevice->SetClip_PathStroke(pPathObj->path().GetObject(), |
| &path_matrix, graphState.GetObject()); |
| } |
| int fill_mode = pPathObj->filltype(); |
| if (m_Options.GetOptions().bNoPathSmooth) { |
| fill_mode |= FXFILL_NOPATHSMOOTH; |
| } |
| return m_pDevice->SetClip_PathFill(pPathObj->path().GetObject(), &path_matrix, |
| fill_mode); |
| } |
| |
| bool CPDF_RenderStatus::ProcessTransparency(CPDF_PageObject* pPageObj, |
| const CFX_Matrix& mtObj2Device) { |
| #if defined _SKIA_SUPPORT_ |
| DebugVerifyDeviceIsPreMultiplied(); |
| #endif |
| BlendMode blend_type = pPageObj->m_GeneralState.GetBlendType(); |
| CPDF_Dictionary* pSMaskDict = |
| ToDictionary(pPageObj->m_GeneralState.GetSoftMask()); |
| if (pSMaskDict) { |
| if (pPageObj->IsImage() && |
| pPageObj->AsImage()->GetImage()->GetDict()->KeyExist("SMask")) { |
| pSMaskDict = nullptr; |
| } |
| } |
| const CPDF_Dictionary* pFormResource = nullptr; |
| float group_alpha = 1.0f; |
| CPDF_Transparency transparency = m_Transparency; |
| bool bGroupTransparent = false; |
| const CPDF_FormObject* pFormObj = pPageObj->AsForm(); |
| if (pFormObj) { |
| group_alpha = pFormObj->m_GeneralState.GetFillAlpha(); |
| transparency = pFormObj->form()->GetTransparency(); |
| bGroupTransparent = transparency.IsIsolated(); |
| const CPDF_Dictionary* pFormDict = pFormObj->form()->GetDict(); |
| if (pFormDict) |
| pFormResource = pFormDict->GetDictFor("Resources"); |
| } |
| bool bTextClip = |
| (pPageObj->m_ClipPath.HasRef() && |
| pPageObj->m_ClipPath.GetTextCount() > 0 && |
| m_pDevice->GetDeviceClass() == FXDC_DISPLAY && |
| !(m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_SOFT_CLIP)); |
| if (m_Options.GetOptions().bOverprint && pPageObj->IsImage() && |
| pPageObj->m_GeneralState.GetFillOP() && |
| pPageObj->m_GeneralState.GetStrokeOP()) { |
| CPDF_Document* pDocument = nullptr; |
| CPDF_Page* pPage = nullptr; |
| if (m_pContext->GetPageCache()) { |
| pPage = m_pContext->GetPageCache()->GetPage(); |
| pDocument = pPage->GetDocument(); |
| } else { |
| pDocument = pPageObj->AsImage()->GetImage()->GetDocument(); |
| } |
| const CPDF_Dictionary* pPageResources = |
| pPage ? pPage->m_pPageResources.Get() : nullptr; |
| const CPDF_Object* pCSObj = pPageObj->AsImage() |
| ->GetImage() |
| ->GetStream() |
| ->GetDict() |
| ->GetDirectObjectFor("ColorSpace"); |
| const CPDF_ColorSpace* pColorSpace = |
| pDocument->LoadColorSpace(pCSObj, pPageResources); |
| if (pColorSpace) { |
| int format = pColorSpace->GetFamily(); |
| if (format == PDFCS_DEVICECMYK || format == PDFCS_SEPARATION || |
| format == PDFCS_DEVICEN) { |
| blend_type = BlendMode::kDarken; |
| } |
| pDocument->GetPageData()->ReleaseColorSpace(pCSObj); |
| } |
| } |
| if (!pSMaskDict && group_alpha == 1.0f && blend_type == BlendMode::kNormal && |
| !bTextClip && !bGroupTransparent) { |
| return false; |
| } |
| if (m_bPrint) { |
| bool bRet = false; |
| int rendCaps = m_pDevice->GetRenderCaps(); |
| if (!(transparency.IsIsolated() || pSMaskDict || bTextClip) && |
| (rendCaps & FXRC_BLEND_MODE)) { |
| BlendMode oldBlend = m_curBlend; |
| m_curBlend = blend_type; |
| bRet = DrawObjWithBlend(pPageObj, mtObj2Device); |
| m_curBlend = oldBlend; |
| } |
| if (!bRet) { |
| DrawObjWithBackground(pPageObj, mtObj2Device); |
| } |
| return true; |
| } |
| FX_RECT rect = pPageObj->GetTransformedBBox(mtObj2Device); |
| rect.Intersect(m_pDevice->GetClipBox()); |
| if (rect.IsEmpty()) |
| return true; |
| |
| int width = rect.Width(); |
| int height = rect.Height(); |
| CFX_DefaultRenderDevice bitmap_device; |
| RetainPtr<CFX_DIBitmap> backdrop; |
| if (!transparency.IsIsolated() && |
| (m_pDevice->GetRenderCaps() & FXRC_GET_BITS)) { |
| backdrop = pdfium::MakeRetain<CFX_DIBitmap>(); |
| if (!m_pDevice->CreateCompatibleBitmap(backdrop, width, height)) |
| return true; |
| m_pDevice->GetDIBits(backdrop, rect.left, rect.top); |
| } |
| if (!bitmap_device.Create(width, height, FXDIB_Argb, backdrop)) |
| return true; |
| |
| RetainPtr<CFX_DIBitmap> bitmap = bitmap_device.GetBitmap(); |
| bitmap->Clear(0); |
| |
| CFX_Matrix new_matrix = mtObj2Device; |
| new_matrix.Translate(-rect.left, -rect.top); |
| |
| RetainPtr<CFX_DIBitmap> pTextMask; |
| if (bTextClip) { |
| pTextMask = pdfium::MakeRetain<CFX_DIBitmap>(); |
| if (!pTextMask->Create(width, height, FXDIB_8bppMask)) |
| return true; |
| |
| pTextMask->Clear(0); |
| CFX_DefaultRenderDevice text_device; |
| text_device.Attach(pTextMask, false, nullptr, false); |
| for (size_t i = 0; i < pPageObj->m_ClipPath.GetTextCount(); ++i) { |
| CPDF_TextObject* textobj = pPageObj->m_ClipPath.GetText(i); |
| if (!textobj) |
| break; |
| |
| CFX_Matrix text_matrix = textobj->GetTextMatrix(); |
| CPDF_TextRenderer::DrawTextPath( |
| &text_device, textobj->GetCharCodes(), textobj->GetCharPositions(), |
| textobj->m_TextState.GetFont(), textobj->m_TextState.GetFontSize(), |
| &text_matrix, &new_matrix, textobj->m_GraphState.GetObject(), |
| (FX_ARGB)-1, 0, nullptr, 0); |
| } |
| } |
| CPDF_RenderStatus bitmap_render(m_pContext.Get(), &bitmap_device); |
| bitmap_render.SetOptions(m_Options); |
| bitmap_render.SetStopObject(m_pStopObj.Get()); |
| bitmap_render.SetStdCS(true); |
| bitmap_render.SetDropObjects(m_bDropObjects); |
| bitmap_render.SetFormResource(pFormResource); |
| bitmap_render.Initialize(nullptr, nullptr); |
| bitmap_render.ProcessObjectNoClip(pPageObj, new_matrix); |
| #if defined _SKIA_SUPPORT_PATHS_ |
| bitmap_device.Flush(true); |
| bitmap->UnPreMultiply(); |
| #endif |
| m_bStopped = bitmap_render.m_bStopped; |
| if (pSMaskDict) { |
| CFX_Matrix smask_matrix = |
| *pPageObj->m_GeneralState.GetSMaskMatrix() * mtObj2Device; |
| RetainPtr<CFX_DIBBase> pSMaskSource = |
| LoadSMask(pSMaskDict, &rect, &smask_matrix); |
| if (pSMaskSource) |
| bitmap->MultiplyAlpha(pSMaskSource); |
| } |
| if (pTextMask) { |
| bitmap->MultiplyAlpha(pTextMask); |
| pTextMask.Reset(); |
| } |
| int32_t blitAlpha = 255; |
| if (group_alpha != 1.0f && transparency.IsGroup()) { |
| blitAlpha = (int32_t)(group_alpha * 255); |
| #ifndef _SKIA_SUPPORT_ |
| bitmap->MultiplyAlpha(blitAlpha); |
| blitAlpha = 255; |
| #endif |
| } |
| transparency = m_Transparency; |
| if (pPageObj->IsForm()) { |
| transparency.SetGroup(); |
| } |
| CompositeDIBitmap(bitmap, rect.left, rect.top, 0, blitAlpha, blend_type, |
| transparency); |
| #if defined _SKIA_SUPPORT_ |
| DebugVerifyDeviceIsPreMultiplied(); |
| #endif |
| return true; |
| } |
| |
| RetainPtr<CFX_DIBitmap> CPDF_RenderStatus::GetBackdrop( |
| const CPDF_PageObject* pObj, |
| const FX_RECT& rect, |
| bool bBackAlphaRequired, |
| int* left, |
| int* top) { |
| FX_RECT bbox = rect; |
| bbox.Intersect(m_pDevice->GetClipBox()); |
| *left = bbox.left; |
| *top = bbox.top; |
| int width = bbox.Width(); |
| int height = bbox.Height(); |
| auto pBackdrop = pdfium::MakeRetain<CFX_DIBitmap>(); |
| if (bBackAlphaRequired && !m_bDropObjects) |
| pBackdrop->Create(width, height, FXDIB_Argb); |
| else |
| m_pDevice->CreateCompatibleBitmap(pBackdrop, width, height); |
| |
| if (!pBackdrop->GetBuffer()) |
| return nullptr; |
| |
| bool bNeedDraw; |
| if (pBackdrop->HasAlpha()) |
| bNeedDraw = !(m_pDevice->GetRenderCaps() & FXRC_ALPHA_OUTPUT); |
| else |
| bNeedDraw = !(m_pDevice->GetRenderCaps() & FXRC_GET_BITS); |
| |
| if (!bNeedDraw) { |
| m_pDevice->GetDIBits(pBackdrop, *left, *top); |
| return pBackdrop; |
| } |
| CFX_Matrix FinalMatrix = m_DeviceMatrix; |
| FinalMatrix.Translate(-*left, -*top); |
| pBackdrop->Clear(pBackdrop->HasAlpha() ? 0 : 0xffffffff); |
| |
| CFX_DefaultRenderDevice device; |
| device.Attach(pBackdrop, false, nullptr, false); |
| m_pContext->Render(&device, pObj, &m_Options, &FinalMatrix); |
| return pBackdrop; |
| } |
| |
| std::unique_ptr<CPDF_GraphicStates> CPDF_RenderStatus::CloneObjStates( |
| const CPDF_GraphicStates* pSrcStates, |
| bool bStroke) { |
| if (!pSrcStates) |
| return nullptr; |
| |
| auto pStates = pdfium::MakeUnique<CPDF_GraphicStates>(); |
| pStates->CopyStates(*pSrcStates); |
| const CPDF_Color* pObjColor = bStroke |
| ? pSrcStates->m_ColorState.GetStrokeColor() |
| : pSrcStates->m_ColorState.GetFillColor(); |
| if (!pObjColor->IsNull()) { |
| pStates->m_ColorState.SetFillColorRef( |
| bStroke ? pSrcStates->m_ColorState.GetStrokeColorRef() |
| : pSrcStates->m_ColorState.GetFillColorRef()); |
| pStates->m_ColorState.SetStrokeColorRef( |
| pStates->m_ColorState.GetFillColorRef()); |
| } |
| return pStates; |
| } |
| |
| #if defined _SKIA_SUPPORT_ |
| void CPDF_RenderStatus::DebugVerifyDeviceIsPreMultiplied() const { |
| m_pDevice->DebugVerifyBitmapIsPreMultiplied(); |
| } |
| #endif |
| |
| bool CPDF_RenderStatus::ProcessText(CPDF_TextObject* textobj, |
| const CFX_Matrix& mtObj2Device, |
| CFX_PathData* pClippingPath) { |
| if (textobj->GetCharCodes().empty()) |
| return true; |
| |
| const TextRenderingMode text_render_mode = textobj->m_TextState.GetTextMode(); |
| if (text_render_mode == TextRenderingMode::MODE_INVISIBLE) |
| return true; |
| |
| CPDF_Font* pFont = textobj->m_TextState.GetFont(); |
| if (pFont->IsType3Font()) |
| return ProcessType3Text(textobj, mtObj2Device); |
| |
| bool bFill = false; |
| bool bStroke = false; |
| bool bClip = false; |
| if (pClippingPath) { |
| bClip = true; |
| } else { |
| switch (text_render_mode) { |
| case TextRenderingMode::MODE_FILL: |
| case TextRenderingMode::MODE_FILL_CLIP: |
| bFill = true; |
| break; |
| case TextRenderingMode::MODE_STROKE: |
| case TextRenderingMode::MODE_STROKE_CLIP: |
| if (pFont->HasFace()) |
| bStroke = true; |
| else |
| bFill = true; |
| break; |
| case TextRenderingMode::MODE_FILL_STROKE: |
| case TextRenderingMode::MODE_FILL_STROKE_CLIP: |
| bFill = true; |
| if (pFont->HasFace()) |
| bStroke = true; |
| break; |
| case TextRenderingMode::MODE_INVISIBLE: |
| // Already handled above, but the compiler is not smart enough to |
| // realize it. Fall through. |
| NOTREACHED(); |
| return true; |
| case TextRenderingMode::MODE_CLIP: |
| return true; |
| } |
| } |
| FX_ARGB stroke_argb = 0; |
| FX_ARGB fill_argb = 0; |
| bool bPattern = false; |
| if (bStroke) { |
| if (textobj->m_ColorState.GetStrokeColor()->IsPattern()) { |
| bPattern = true; |
| } else { |
| stroke_argb = GetStrokeArgb(textobj); |
| } |
| } |
| if (bFill) { |
| if (textobj->m_ColorState.GetFillColor()->IsPattern()) { |
| bPattern = true; |
| } else { |
| fill_argb = GetFillArgb(textobj); |
| } |
| } |
| CFX_Matrix text_matrix = textobj->GetTextMatrix(); |
| if (!IsAvailableMatrix(text_matrix)) |
| return true; |
| |
| float font_size = textobj->m_TextState.GetFontSize(); |
| if (bPattern) { |
| DrawTextPathWithPattern(textobj, mtObj2Device, pFont, font_size, |
| &text_matrix, bFill, bStroke); |
| return true; |
| } |
| if (bClip || bStroke) { |
| const CFX_Matrix* pDeviceMatrix = &mtObj2Device; |
| CFX_Matrix device_matrix; |
| if (bStroke) { |
| const float* pCTM = textobj->m_TextState.GetCTM(); |
| if (pCTM[0] != 1.0f || pCTM[3] != 1.0f) { |
| CFX_Matrix ctm(pCTM[0], pCTM[1], pCTM[2], pCTM[3], 0, 0); |
| text_matrix *= ctm.GetInverse(); |
| device_matrix = ctm * mtObj2Device; |
| pDeviceMatrix = &device_matrix; |
| } |
| } |
| int flag = 0; |
| if (bStroke && bFill) { |
| flag |= FX_FILL_STROKE; |
| flag |= FX_STROKE_TEXT_MODE; |
| } |
| if (textobj->m_GeneralState.GetStrokeAdjust()) |
| flag |= FX_STROKE_ADJUST; |
| if (m_Options.GetOptions().bNoTextSmooth) |
| flag |= FXFILL_NOPATHSMOOTH; |
| return CPDF_TextRenderer::DrawTextPath( |
| m_pDevice, textobj->GetCharCodes(), textobj->GetCharPositions(), pFont, |
| font_size, &text_matrix, pDeviceMatrix, |
| textobj->m_GraphState.GetObject(), fill_argb, stroke_argb, |
| pClippingPath, flag); |
| } |
| text_matrix.Concat(mtObj2Device); |
| return CPDF_TextRenderer::DrawNormalText( |
| m_pDevice, textobj->GetCharCodes(), textobj->GetCharPositions(), pFont, |
| font_size, &text_matrix, fill_argb, &m_Options); |
| } |
| |
| RetainPtr<CPDF_Type3Cache> CPDF_RenderStatus::GetCachedType3( |
| CPDF_Type3Font* pFont) { |
| CPDF_Document* pDoc = pFont->GetDocument(); |
| if (!pDoc) |
| return nullptr; |
| |
| pDoc->GetPageData()->GetFont(pFont->GetFontDict()); |
| return pDoc->GetRenderData()->GetCachedType3(pFont); |
| } |
| |
| // TODO(npm): Font fallback for type 3 fonts? (Completely separate code!!) |
| bool CPDF_RenderStatus::ProcessType3Text(CPDF_TextObject* textobj, |
| const CFX_Matrix& mtObj2Device) { |
| CPDF_Type3Font* pType3Font = textobj->m_TextState.GetFont()->AsType3Font(); |
| if (pdfium::ContainsValue(m_Type3FontCache, pType3Font)) |
| return true; |
| |
| CFX_Matrix text_matrix = textobj->GetTextMatrix(); |
| CFX_Matrix char_matrix = pType3Font->GetFontMatrix(); |
| float font_size = textobj->m_TextState.GetFontSize(); |
| char_matrix.Scale(font_size, font_size); |
| FX_ARGB fill_argb = GetFillArgbForType3(textobj); |
| int fill_alpha = FXARGB_A(fill_argb); |
| int device_class = m_pDevice->GetDeviceClass(); |
| std::vector<FXTEXT_GLYPHPOS> glyphs; |
| if (device_class == FXDC_DISPLAY) |
| glyphs.resize(textobj->GetCharCodes().size()); |
| else if (fill_alpha < 255) |
| return false; |
| |
| CPDF_RefType3Cache refTypeCache(pType3Font); |
| for (size_t iChar = 0; iChar < textobj->GetCharCodes().size(); ++iChar) { |
| uint32_t charcode = textobj->GetCharCodes()[iChar]; |
| if (charcode == static_cast<uint32_t>(-1)) |
| continue; |
| |
| CPDF_Type3Char* pType3Char = pType3Font->LoadChar(charcode); |
| if (!pType3Char) |
| continue; |
| |
| CFX_Matrix matrix = char_matrix; |
| matrix.e += iChar > 0 ? textobj->GetCharPositions()[iChar - 1] : 0; |
| matrix.Concat(text_matrix); |
| matrix.Concat(mtObj2Device); |
| if (!pType3Char->LoadBitmap(m_pContext.Get())) { |
| if (!glyphs.empty()) { |
| for (size_t i = 0; i < iChar; ++i) { |
| const FXTEXT_GLYPHPOS& glyph = glyphs[i]; |
| if (!glyph.m_pGlyph) |
| continue; |
| |
| m_pDevice->SetBitMask(glyph.m_pGlyph->m_pBitmap, |
| glyph.m_Origin.x + glyph.m_pGlyph->m_Left, |
| glyph.m_Origin.y - glyph.m_pGlyph->m_Top, |
| fill_argb); |
| } |
| glyphs.clear(); |
| } |
| |
| std::unique_ptr<CPDF_GraphicStates> pStates = |
| CloneObjStates(textobj, false); |
| CPDF_RenderOptions options = m_Options; |
| options.GetOptions().bForceHalftone = true; |
| options.GetOptions().bRectAA = true; |
| options.GetOptions().bForceDownsample = false; |
| |
| const CPDF_Dictionary* pFormResource = nullptr; |
| if (pType3Char->form() && pType3Char->form()->GetDict()) { |
| pFormResource = pType3Char->form()->GetDict()->GetDictFor("Resources"); |
| } |
| if (fill_alpha == 255) { |
| CPDF_RenderStatus status(m_pContext.Get(), m_pDevice); |
| status.SetOptions(options); |
| status.SetTransparency(pType3Char->form()->GetTransparency()); |
| status.SetType3Char(pType3Char); |
| status.SetFillColor(fill_argb); |
| status.SetDropObjects(m_bDropObjects); |
| status.SetFormResource(pFormResource); |
| status.Initialize(this, pStates.get()); |
| status.m_Type3FontCache = m_Type3FontCache; |
| status.m_Type3FontCache.push_back(pType3Font); |
| |
| CFX_RenderDevice::StateRestorer restorer(m_pDevice); |
| status.RenderObjectList(pType3Char->form(), matrix); |
| } else { |
| FX_RECT rect = |
| matrix.TransformRect(pType3Char->form()->CalcBoundingBox()) |
| .GetOuterRect(); |
| CFX_DefaultRenderDevice bitmap_device; |
| if (!bitmap_device.Create(rect.Width(), rect.Height(), FXDIB_Argb, |
| nullptr)) { |
| return true; |
| } |
| bitmap_device.GetBitmap()->Clear(0); |
| CPDF_RenderStatus status(m_pContext.Get(), &bitmap_device); |
| status.SetOptions(options); |
| status.SetTransparency(pType3Char->form()->GetTransparency()); |
| status.SetType3Char(pType3Char); |
| status.SetFillColor(fill_argb); |
| status.SetDropObjects(m_bDropObjects); |
| status.SetFormResource(pFormResource); |
| status.Initialize(this, pStates.get()); |
| status.m_Type3FontCache = m_Type3FontCache; |
| status.m_Type3FontCache.push_back(pType3Font); |
| matrix.Translate(-rect.left, -rect.top); |
| status.RenderObjectList(pType3Char->form(), matrix); |
| m_pDevice->SetDIBits(bitmap_device.GetBitmap(), rect.left, rect.top); |
| } |
| } else if (pType3Char->GetBitmap()) { |
| if (device_class == FXDC_DISPLAY) { |
| RetainPtr<CPDF_Type3Cache> pCache = GetCachedType3(pType3Font); |
| refTypeCache.m_dwCount++; |
| CFX_GlyphBitmap* pBitmap = pCache->LoadGlyph(charcode, &matrix); |
| if (!pBitmap) |
| continue; |
| |
| CFX_Point origin(FXSYS_round(matrix.e), FXSYS_round(matrix.f)); |
| if (glyphs.empty()) { |
| m_pDevice->SetBitMask(pBitmap->m_pBitmap, origin.x + pBitmap->m_Left, |
| origin.y - pBitmap->m_Top, fill_argb); |
| } else { |
| glyphs[iChar].m_pGlyph = pBitmap; |
| glyphs[iChar].m_Origin = origin; |
| } |
| } else { |
| CFX_Matrix image_matrix = pType3Char->matrix() * matrix; |
| CPDF_ImageRenderer renderer; |
| if (renderer.Start(this, pType3Char->GetBitmap(), fill_argb, 255, |
| image_matrix, FXDIB_ResampleOptions(), false, |
| BlendMode::kNormal)) { |
| renderer.Continue(nullptr); |
| } |
| if (!renderer.GetResult()) |
| return false; |
| } |
| } |
| } |
| |
| if (glyphs.empty()) |
| return true; |
| |
| FX_RECT rect = FXGE_GetGlyphsBBox(glyphs, 0); |
| auto pBitmap = pdfium::MakeRetain<CFX_DIBitmap>(); |
| if (!pBitmap->Create(rect.Width(), rect.Height(), FXDIB_8bppMask)) |
| return true; |
| |
| pBitmap->Clear(0); |
| for (const FXTEXT_GLYPHPOS& glyph : glyphs) { |
| if (!glyph.m_pGlyph) |
| continue; |
| |
| pdfium::base::CheckedNumeric<int> left = glyph.m_Origin.x; |
| left += glyph.m_pGlyph->m_Left; |
| left -= rect.left; |
| if (!left.IsValid()) |
| continue; |
| |
| pdfium::base::CheckedNumeric<int> top = glyph.m_Origin.y; |
| top -= glyph.m_pGlyph->m_Top; |
| top -= rect.top; |
| if (!top.IsValid()) |
| continue; |
| |
| pBitmap->CompositeMask(left.ValueOrDie(), top.ValueOrDie(), |
| glyph.m_pGlyph->m_pBitmap->GetWidth(), |
| glyph.m_pGlyph->m_pBitmap->GetHeight(), |
| glyph.m_pGlyph->m_pBitmap, fill_argb, 0, 0, |
| BlendMode::kNormal, nullptr, false, 0); |
| } |
| m_pDevice->SetBitMask(pBitmap, rect.left, rect.top, fill_argb); |
| return true; |
| } |
| |
| void CPDF_RenderStatus::DrawTextPathWithPattern(const CPDF_TextObject* textobj, |
| const CFX_Matrix& mtObj2Device, |
| CPDF_Font* pFont, |
| float font_size, |
| const CFX_Matrix* pTextMatrix, |
| bool bFill, |
| bool bStroke) { |
| if (!bStroke) { |
| std::vector<std::unique_ptr<CPDF_TextObject>> pCopy; |
| pCopy.push_back(std::unique_ptr<CPDF_TextObject>(textobj->Clone())); |
| |
| CPDF_PathObject path; |
| path.set_filltype(FXFILL_WINDING); |
| path.m_ClipPath.AppendTexts(&pCopy); |
| path.m_ColorState = textobj->m_ColorState; |
| path.m_GeneralState = textobj->m_GeneralState; |
| path.path().AppendRect(textobj->GetRect().left, textobj->GetRect().bottom, |
| textobj->GetRect().right, textobj->GetRect().top); |
| path.SetRect(textobj->GetRect()); |
| |
| AutoRestorer<UnownedPtr<const CPDF_PageObject>> restorer2(&m_pCurObj); |
| RenderSingleObject(&path, mtObj2Device); |
| return; |
| } |
| CPDF_CharPosList CharPosList; |
| CharPosList.Load(textobj->GetCharCodes(), textobj->GetCharPositions(), pFont, |
| font_size); |
| for (uint32_t i = 0; i < CharPosList.m_nChars; i++) { |
| FXTEXT_CHARPOS& charpos = CharPosList.m_pCharPos[i]; |
| auto* font = charpos.m_FallbackFontPosition == -1 |
| ? pFont->GetFont() |
| : pFont->GetFontFallback(charpos.m_FallbackFontPosition); |
| const CFX_PathData* pPath = |
| font->LoadGlyphPath(charpos.m_GlyphIndex, charpos.m_FontCharWidth); |
| if (!pPath) |
| continue; |
| |
| CPDF_PathObject path; |
| path.m_GraphState = textobj->m_GraphState; |
| path.m_ColorState = textobj->m_ColorState; |
| |
| CFX_Matrix matrix; |
| if (charpos.m_bGlyphAdjust) { |
| matrix = CFX_Matrix(charpos.m_AdjustMatrix[0], charpos.m_AdjustMatrix[1], |
| charpos.m_AdjustMatrix[2], charpos.m_AdjustMatrix[3], |
| 0, 0); |
| } |
| matrix.Concat(CFX_Matrix(font_size, 0, 0, font_size, charpos.m_Origin.x, |
| charpos.m_Origin.y)); |
| path.set_stroke(bStroke); |
| path.set_filltype(bFill ? FXFILL_WINDING : 0); |
| path.path().Append(pPath, &matrix); |
| path.set_matrix(*pTextMatrix); |
| path.CalcBoundingBox(); |
| ProcessPath(&path, mtObj2Device); |
| } |
| } |
| |
| void CPDF_RenderStatus::DrawShading(const CPDF_ShadingPattern* pPattern, |
| const CFX_Matrix& mtMatrix, |
| const FX_RECT& clip_rect, |
| int alpha, |
| bool bAlphaMode) { |
| const auto& funcs = pPattern->GetFuncs(); |
| const CPDF_Dictionary* pDict = pPattern->GetShadingObject()->GetDict(); |
| const CPDF_ColorSpace* pColorSpace = pPattern->GetCS(); |
| if (!pColorSpace) |
| return; |
| |
| FX_ARGB background = 0; |
| if (!pPattern->IsShadingObject() && pDict->KeyExist("Background")) { |
| const CPDF_Array* pBackColor = pDict->GetArrayFor("Background"); |
| if (pBackColor && pBackColor->size() >= pColorSpace->CountComponents()) { |
| std::vector<float> comps(pColorSpace->CountComponents()); |
| for (uint32_t i = 0; i < pColorSpace->CountComponents(); i++) |
| comps[i] = pBackColor->GetNumberAt(i); |
| float R = 0.0f; |
| float G = 0.0f; |
| float B = 0.0f; |
| pColorSpace->GetRGB(comps.data(), &R, &G, &B); |
| background = ArgbEncode(255, (int32_t)(R * 255), (int32_t)(G * 255), |
| (int32_t)(B * 255)); |
| } |
| } |
| FX_RECT clip_rect_bbox = clip_rect; |
| if (pDict->KeyExist("BBox")) { |
| clip_rect_bbox.Intersect( |
| mtMatrix.TransformRect(pDict->GetRectFor("BBox")).GetOuterRect()); |
| } |
| if (m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_SHADING && |
| m_pDevice->GetDeviceDriver()->DrawShading( |
| pPattern, &mtMatrix, clip_rect_bbox, alpha, bAlphaMode)) { |
| return; |
| } |
| CPDF_DeviceBuffer buffer; |
| buffer.Initialize(m_pContext.Get(), m_pDevice, clip_rect_bbox, |
| m_pCurObj.Get(), 150); |
| CFX_Matrix FinalMatrix = mtMatrix * buffer.GetMatrix(); |
| RetainPtr<CFX_DIBitmap> pBitmap = buffer.GetBitmap(); |
| if (!pBitmap->GetBuffer()) |
| return; |
| |
| pBitmap->Clear(background); |
| switch (pPattern->GetShadingType()) { |
| case kInvalidShading: |
| case kMaxShading: |
| return; |
| case kFunctionBasedShading: |
| DrawFuncShading(pBitmap, FinalMatrix, pDict, funcs, pColorSpace, alpha); |
| break; |
| case kAxialShading: |
| DrawAxialShading(pBitmap, FinalMatrix, pDict, funcs, pColorSpace, alpha); |
| break; |
| case kRadialShading: |
| DrawRadialShading(pBitmap, FinalMatrix, pDict, funcs, pColorSpace, alpha); |
| break; |
| case kFreeFormGouraudTriangleMeshShading: { |
| // The shading object can be a stream or a dictionary. We do not handle |
| // the case of dictionary at the moment. |
| if (const CPDF_Stream* pStream = ToStream(pPattern->GetShadingObject())) { |
| DrawFreeGouraudShading(pBitmap, FinalMatrix, pStream, funcs, |
| pColorSpace, alpha); |
| } |
| } break; |
| case kLatticeFormGouraudTriangleMeshShading: { |
| // The shading object can be a stream or a dictionary. We do not handle |
| // the case of dictionary at the moment. |
| if (const CPDF_Stream* pStream = ToStream(pPattern->GetShadingObject())) { |
| DrawLatticeGouraudShading(pBitmap, FinalMatrix, pStream, funcs, |
| pColorSpace, alpha); |
| } |
| } break; |
| case kCoonsPatchMeshShading: |
| case kTensorProductPatchMeshShading: { |
| // The shading object can be a stream or a dictionary. We do not handle |
| // the case of dictionary at the moment. |
| if (const CPDF_Stream* pStream = ToStream(pPattern->GetShadingObject())) { |
| DrawCoonPatchMeshes(pPattern->GetShadingType(), pBitmap, FinalMatrix, |
| pStream, funcs, pColorSpace, |
| m_Options.GetOptions().bNoPathSmooth, alpha); |
| } |
| } break; |
| } |
| if (bAlphaMode) |
| pBitmap->LoadChannelFromAlpha(FXDIB_Red, pBitmap); |
| |
| if (m_Options.ColorModeIs(CPDF_RenderOptions::kGray)) |
| pBitmap->ConvertColorScale(0, 0xffffff); |
| buffer.OutputToDevice(); |
| } |
| |
| void CPDF_RenderStatus::DrawShadingPattern(CPDF_ShadingPattern* pattern, |
| const CPDF_PageObject* pPageObj, |
| const CFX_Matrix& mtObj2Device, |
| bool bStroke) { |
| if (!pattern->Load()) |
| return; |
| |
| CFX_RenderDevice::StateRestorer restorer(m_pDevice); |
| if (!ClipPattern(pPageObj, mtObj2Device, bStroke)) |
| return; |
| |
| FX_RECT rect = GetObjectClippedRect(pPageObj, mtObj2Device); |
| if (rect.IsEmpty()) |
| return; |
| |
| CFX_Matrix matrix = *pattern->pattern_to_form() * mtObj2Device; |
| int alpha = |
| FXSYS_round(255 * (bStroke ? pPageObj->m_GeneralState.GetStrokeAlpha() |
| : pPageObj->m_GeneralState.GetFillAlpha())); |
| DrawShading(pattern, matrix, rect, alpha, |
| m_Options.ColorModeIs(CPDF_RenderOptions::kAlpha)); |
| } |
| |
| void CPDF_RenderStatus::ProcessShading(const CPDF_ShadingObject* pShadingObj, |
| const CFX_Matrix& mtObj2Device) { |
| FX_RECT rect = pShadingObj->GetTransformedBBox(mtObj2Device); |
| FX_RECT clip_box = m_pDevice->GetClipBox(); |
| rect.Intersect(clip_box); |
| if (rect.IsEmpty()) |
| return; |
| |
| CFX_Matrix matrix = pShadingObj->matrix() * mtObj2Device; |
| DrawShading(pShadingObj->pattern(), matrix, rect, |
| FXSYS_round(255 * pShadingObj->m_GeneralState.GetFillAlpha()), |
| m_Options.ColorModeIs(CPDF_RenderOptions::kAlpha)); |
| } |
| |
| void CPDF_RenderStatus::DrawTilingPattern(CPDF_TilingPattern* pPattern, |
| CPDF_PageObject* pPageObj, |
| const CFX_Matrix& mtObj2Device, |
| bool bStroke) { |
| if (!pPattern->Load()) |
| return; |
| |
| CFX_RenderDevice::StateRestorer restorer(m_pDevice); |
| if (!ClipPattern(pPageObj, mtObj2Device, bStroke)) |
| return; |
| |
| FX_RECT clip_box = m_pDevice->GetClipBox(); |
| if (clip_box.IsEmpty()) |
| return; |
| |
| CFX_Matrix mtPattern2Device = *pPattern->pattern_to_form() * mtObj2Device; |
| |
| bool bAligned = |
| pPattern->bbox().left == 0 && pPattern->bbox().bottom == 0 && |
| pPattern->bbox().right == pPattern->x_step() && |
| pPattern->bbox().top == pPattern->y_step() && |
| (mtPattern2Device.IsScaled() || mtPattern2Device.Is90Rotated()); |
| |
| CFX_FloatRect cell_bbox = mtPattern2Device.TransformRect(pPattern->bbox()); |
| |
| float ceil_height = std::ceil(cell_bbox.Height()); |
| float ceil_width = std::ceil(cell_bbox.Width()); |
| |
| // Validate the float will fit into the int when the conversion is done. |
| if (!pdfium::base::IsValueInRangeForNumericType<int>(ceil_height) || |
| !pdfium::base::IsValueInRangeForNumericType<int>(ceil_width)) { |
| return; |
| } |
| |
| int width = static_cast<int>(ceil_width); |
| int height = static_cast<int>(ceil_height); |
| if (width <= 0) |
| width = 1; |
| if (height <= 0) |
| height = 1; |
| |
| CFX_FloatRect clip_box_p = |
| mtPattern2Device.GetInverse().TransformRect(CFX_FloatRect(clip_box)); |
| int min_col = (int)ceil((clip_box_p.left - pPattern->bbox().right) / |
| pPattern->x_step()); |
| int max_col = (int)floor((clip_box_p.right - pPattern->bbox().left) / |
| pPattern->x_step()); |
| int min_row = (int)ceil((clip_box_p.bottom - pPattern->bbox().top) / |
| pPattern->y_step()); |
| int max_row = (int)floor((clip_box_p.top - pPattern->bbox().bottom) / |
| pPattern->y_step()); |
| |
| // Make sure we can fit the needed width * height into an int. |
| if (height > std::numeric_limits<int>::max() / width) |
| return; |
| |
| if (width > clip_box.Width() || height > clip_box.Height() || |
| width * height > clip_box.Width() * clip_box.Height()) { |
| std::unique_ptr<CPDF_GraphicStates> pStates; |
| if (!pPattern->colored()) |
| pStates = CloneObjStates(pPageObj, bStroke); |
| |
| const CPDF_Dictionary* pFormDict = pPattern->form()->GetDict(); |
| const CPDF_Dictionary* pFormResource = |
| pFormDict ? pFormDict->GetDictFor("Resources") : nullptr; |
| for (int col = min_col; col <= max_col; col++) { |
| for (int row = min_row; row <= max_row; row++) { |
| CFX_PointF original = mtPattern2Device.Transform( |
| CFX_PointF(col * pPattern->x_step(), row * pPattern->y_step())); |
| CFX_Matrix matrix = mtObj2Device; |
| matrix.Translate(original.x - mtPattern2Device.e, |
| original.y - mtPattern2Device.f); |
| CFX_RenderDevice::StateRestorer restorer2(m_pDevice); |
| CPDF_RenderStatus status(m_pContext.Get(), m_pDevice); |
| status.SetOptions(m_Options); |
| status.SetTransparency(pPattern->form()->GetTransparency()); |
| status.SetFormResource(pFormResource); |
| status.SetDropObjects(m_bDropObjects); |
| status.Initialize(this, pStates.get()); |
| status.RenderObjectList(pPattern->form(), matrix); |
| } |
| } |
| return; |
| } |
| if (bAligned) { |
| int orig_x = FXSYS_round(mtPattern2Device.e); |
| int orig_y = FXSYS_round(mtPattern2Device.f); |
| min_col = (clip_box.left - orig_x) / width; |
| if (clip_box.left < orig_x) |
| min_col--; |
| |
| max_col = (clip_box.right - orig_x) / width; |
| if (clip_box.right <= orig_x) |
| max_col--; |
| |
| min_row = (clip_box.top - orig_y) / height; |
| if (clip_box.top < orig_y) |
| min_row--; |
| |
| max_row = (clip_box.bottom - orig_y) / height; |
| if (clip_box.bottom <= orig_y) |
| max_row--; |
| } |
| float left_offset = cell_bbox.left - mtPattern2Device.e; |
| float top_offset = cell_bbox.bottom - mtPattern2Device.f; |
| RetainPtr<CFX_DIBitmap> pPatternBitmap; |
| if (width * height < 16) { |
| RetainPtr<CFX_DIBitmap> pEnlargedBitmap = |
| DrawPatternBitmap(m_pContext->GetDocument(), m_pContext->GetPageCache(), |
| pPattern, mtObj2Device, 8, 8, m_Options.GetOptions()); |
| pPatternBitmap = pEnlargedBitmap->StretchTo( |
| width, height, FXDIB_ResampleOptions(), nullptr); |
| } else { |
| pPatternBitmap = DrawPatternBitmap( |
| m_pContext->GetDocument(), m_pContext->GetPageCache(), pPattern, |
| mtObj2Device, width, height, m_Options.GetOptions()); |
| } |
| if (!pPatternBitmap) |
| return; |
| |
| if (m_Options.ColorModeIs(CPDF_RenderOptions::kGray)) |
| pPatternBitmap->ConvertColorScale(0, 0xffffff); |
| |
| FX_ARGB fill_argb = GetFillArgb(pPageObj); |
| int clip_width = clip_box.right - clip_box.left; |
| int clip_height = clip_box.bottom - clip_box.top; |
| auto pScreen = pdfium::MakeRetain<CFX_DIBitmap>(); |
| if (!pScreen->Create(clip_width, clip_height, FXDIB_Argb)) |
| return; |
| |
| pScreen->Clear(0); |
| uint32_t* src_buf = (uint32_t*)pPatternBitmap->GetBuffer(); |
| for (int col = min_col; col <= max_col; col++) { |
| for (int row = min_row; row <= max_row; row++) { |
| int start_x, start_y; |
| if (bAligned) { |
| start_x = FXSYS_round(mtPattern2Device.e) + col * width - clip_box.left; |
| start_y = FXSYS_round(mtPattern2Device.f) + row * height - clip_box.top; |
| } else { |
| CFX_PointF original = mtPattern2Device.Transform( |
| CFX_PointF(col * pPattern->x_step(), row * pPattern->y_step())); |
| |
| pdfium::base::CheckedNumeric<int> safeStartX = |
| FXSYS_round(original.x + left_offset); |
| pdfium::base::CheckedNumeric<int> safeStartY = |
| FXSYS_round(original.y + top_offset); |
| |
| safeStartX -= clip_box.left; |
| safeStartY -= clip_box.top; |
| if (!safeStartX.IsValid() || !safeStartY.IsValid()) |
| return; |
| |
| start_x = safeStartX.ValueOrDie(); |
| start_y = safeStartY.ValueOrDie(); |
| } |
| if (width == 1 && height == 1) { |
| if (start_x < 0 || start_x >= clip_box.Width() || start_y < 0 || |
| start_y >= clip_box.Height()) { |
| continue; |
| } |
| uint32_t* dest_buf = |
| (uint32_t*)(pScreen->GetBuffer() + pScreen->GetPitch() * start_y + |
| start_x * 4); |
| if (pPattern->colored()) |
| *dest_buf = *src_buf; |
| else |
| *dest_buf = (*(uint8_t*)src_buf << 24) | (fill_argb & 0xffffff); |
| } else { |
| if (pPattern->colored()) { |
| pScreen->CompositeBitmap(start_x, start_y, width, height, |
| pPatternBitmap, 0, 0, BlendMode::kNormal, |
| nullptr, false); |
| } else { |
| pScreen->CompositeMask(start_x, start_y, width, height, |
| pPatternBitmap, fill_argb, 0, 0, |
| BlendMode::kNormal, nullptr, false, 0); |
| } |
| } |
| } |
| } |
| CompositeDIBitmap(pScreen, clip_box.left, clip_box.top, 0, 255, |
| BlendMode::kNormal, CPDF_Transparency()); |
| } |
| |
| void CPDF_RenderStatus::DrawPathWithPattern(CPDF_PathObject* pPathObj, |
| const CFX_Matrix& mtObj2Device, |
| const CPDF_Color* pColor, |
| bool bStroke) { |
| CPDF_Pattern* pattern = pColor->GetPattern(); |
| if (!pattern) |
| return; |
| |
| if (CPDF_TilingPattern* pTilingPattern = pattern->AsTilingPattern()) |
| DrawTilingPattern(pTilingPattern, pPathObj, mtObj2Device, bStroke); |
| else if (CPDF_ShadingPattern* pShadingPattern = pattern->AsShadingPattern()) |
| DrawShadingPattern(pShadingPattern, pPathObj, mtObj2Device, bStroke); |
| } |
| |
| void CPDF_RenderStatus::ProcessPathPattern(CPDF_PathObject* pPathObj, |
| const CFX_Matrix& mtObj2Device, |
| int* filltype, |
| bool* bStroke) { |
| ASSERT(filltype); |
| ASSERT(bStroke); |
| |
| if (*filltype) { |
| const CPDF_Color& FillColor = *pPathObj->m_ColorState.GetFillColor(); |
| if (FillColor.IsPattern()) { |
| DrawPathWithPattern(pPathObj, mtObj2Device, &FillColor, false); |
| *filltype = 0; |
| } |
| } |
| if (*bStroke) { |
| const CPDF_Color& StrokeColor = *pPathObj->m_ColorState.GetStrokeColor(); |
| if (StrokeColor.IsPattern()) { |
| DrawPathWithPattern(pPathObj, mtObj2Device, &StrokeColor, true); |
| *bStroke = false; |
| } |
| } |
| } |
| |
| bool CPDF_RenderStatus::ProcessImage(CPDF_ImageObject* pImageObj, |
| const CFX_Matrix& mtObj2Device) { |
| CPDF_ImageRenderer render; |
| if (render.Start(this, pImageObj, mtObj2Device, m_bStdCS, m_curBlend)) |
| render.Continue(nullptr); |
| return render.GetResult(); |
| } |
| |
| void CPDF_RenderStatus::CompositeDIBitmap( |
| const RetainPtr<CFX_DIBitmap>& pDIBitmap, |
| int left, |
| int top, |
| FX_ARGB mask_argb, |
| int bitmap_alpha, |
| BlendMode blend_mode, |
| const CPDF_Transparency& transparency) { |
| if (!pDIBitmap) |
| return; |
| |
| if (blend_mode == BlendMode::kNormal) { |
| if (!pDIBitmap->IsAlphaMask()) { |
| if (bitmap_alpha < 255) { |
| #ifdef _SKIA_SUPPORT_ |
| std::unique_ptr<CFX_ImageRenderer> dummy; |
| CFX_Matrix m = CFX_RenderDevice::GetFlipMatrix( |
| pDIBitmap->GetWidth(), pDIBitmap->GetHeight(), left, top); |
| m_pDevice->StartDIBits(pDIBitmap, bitmap_alpha, 0, m, |
| FXDIB_ResampleOptions(), &dummy); |
| return; |
| #else |
| pDIBitmap->MultiplyAlpha(bitmap_alpha); |
| #endif |
| } |
| #ifdef _SKIA_SUPPORT_ |
| CFX_SkiaDeviceDriver::PreMultiply(pDIBitmap); |
| #endif |
| if (m_pDevice->SetDIBits(pDIBitmap, left, top)) { |
| return; |
| } |
| } else { |
| uint32_t fill_argb = m_Options.TranslateColor(mask_argb); |
| if (bitmap_alpha < 255) { |
| uint8_t* fill_argb8 = reinterpret_cast<uint8_t*>(&fill_argb); |
| fill_argb8[3] *= bitmap_alpha / 255; |
| } |
| if (m_pDevice->SetBitMask(pDIBitmap, left, top, fill_argb)) { |
| return; |
| } |
| } |
| } |
| bool bIsolated = transparency.IsIsolated(); |
| bool bBackAlphaRequired = |
| blend_mode != BlendMode::kNormal && bIsolated && !m_bDropObjects; |
| bool bGetBackGround = |
| ((m_pDevice->GetRenderCaps() & FXRC_ALPHA_OUTPUT)) || |
| (!(m_pDevice->GetRenderCaps() & FXRC_ALPHA_OUTPUT) && |
| (m_pDevice->GetRenderCaps() & FXRC_GET_BITS) && !bBackAlphaRequired); |
| if (bGetBackGround) { |
| if (bIsolated || !transparency.IsGroup()) { |
| if (!pDIBitmap->IsAlphaMask()) |
| m_pDevice->SetDIBitsWithBlend(pDIBitmap, left, top, blend_mode); |
| return; |
| } |
| |
| FX_RECT rect(left, top, left + pDIBitmap->GetWidth(), |
| top + pDIBitmap->GetHeight()); |
| rect.Intersect(m_pDevice->GetClipBox()); |
| RetainPtr<CFX_DIBitmap> pClone; |
| if (m_pDevice->GetBackDrop() && m_pDevice->GetBitmap()) { |
| pClone = m_pDevice->GetBackDrop()->Clone(&rect); |
| if (!pClone) |
| return; |
| |
| RetainPtr<CFX_DIBitmap> pForeBitmap = m_pDevice->GetBitmap(); |
| pClone->CompositeBitmap(0, 0, pClone->GetWidth(), pClone->GetHeight(), |
| pForeBitmap, rect.left, rect.top, |
| BlendMode::kNormal, nullptr, false); |
| left = std::min(left, 0); |
| top = std::min(top, 0); |
| if (pDIBitmap->IsAlphaMask()) { |
| pClone->CompositeMask(0, 0, pClone->GetWidth(), pClone->GetHeight(), |
| pDIBitmap, mask_argb, left, top, blend_mode, |
| nullptr, false, 0); |
| } else { |
| pClone->CompositeBitmap(0, 0, pClone->GetWidth(), pClone->GetHeight(), |
| pDIBitmap, left, top, blend_mode, nullptr, |
| false); |
| } |
| } else { |
| pClone = pDIBitmap; |
| } |
| if (m_pDevice->GetBackDrop()) { |
| m_pDevice->SetDIBits(pClone, rect.left, rect.top); |
| } else { |
| if (!pDIBitmap->IsAlphaMask()) { |
| m_pDevice->SetDIBitsWithBlend(pDIBitmap, rect.left, rect.top, |
| blend_mode); |
| } |
| } |
| return; |
| } |
| int back_left; |
| int back_top; |
| FX_RECT rect(left, top, left + pDIBitmap->GetWidth(), |
| top + pDIBitmap->GetHeight()); |
| RetainPtr<CFX_DIBitmap> pBackdrop = GetBackdrop( |
| m_pCurObj.Get(), rect, blend_mode != BlendMode::kNormal && bIsolated, |
| &back_left, &back_top); |
| if (!pBackdrop) |
| return; |
| |
| if (pDIBitmap->IsAlphaMask()) { |
| pBackdrop->CompositeMask(left - back_left, top - back_top, |
| pDIBitmap->GetWidth(), pDIBitmap->GetHeight(), |
| pDIBitmap, mask_argb, 0, 0, blend_mode, nullptr, |
| false, 0); |
| } else { |
| pBackdrop->CompositeBitmap(left - back_left, top - back_top, |
| pDIBitmap->GetWidth(), pDIBitmap->GetHeight(), |
| pDIBitmap, 0, 0, blend_mode, nullptr, false); |
| } |
| |
| auto pBackdrop1 = pdfium::MakeRetain<CFX_DIBitmap>(); |
| pBackdrop1->Create(pBackdrop->GetWidth(), pBackdrop->GetHeight(), |
| FXDIB_Rgb32); |
| pBackdrop1->Clear((uint32_t)-1); |
| pBackdrop1->CompositeBitmap(0, 0, pBackdrop->GetWidth(), |
| pBackdrop->GetHeight(), pBackdrop, 0, 0, |
| BlendMode::kNormal, nullptr, false); |
| pBackdrop = std::move(pBackdrop1); |
| m_pDevice->SetDIBits(pBackdrop, back_left, back_top); |
| } |
| |
| RetainPtr<CFX_DIBitmap> CPDF_RenderStatus::LoadSMask( |
| CPDF_Dictionary* pSMaskDict, |
| FX_RECT* pClipRect, |
| const CFX_Matrix* pMatrix) { |
| if (!pSMaskDict) |
| return nullptr; |
| |
| CPDF_Stream* pGroup = pSMaskDict->GetStreamFor(pdfium::transparency::kG); |
| if (!pGroup) |
| return nullptr; |
| |
| std::unique_ptr<CPDF_Function> pFunc; |
| const CPDF_Object* pFuncObj = |
| pSMaskDict->GetDirectObjectFor(pdfium::transparency::kTR); |
| if (pFuncObj && (pFuncObj->IsDictionary() || pFuncObj->IsStream())) |
| pFunc = CPDF_Function::Load(pFuncObj); |
| |
| CFX_Matrix matrix = *pMatrix; |
| matrix.Translate(-pClipRect->left, -pClipRect->top); |
| |
| CPDF_Form form(m_pContext->GetDocument(), m_pContext->GetPageResources(), |
| pGroup); |
| form.ParseContent(nullptr, nullptr, nullptr, nullptr); |
| |
| CFX_DefaultRenderDevice bitmap_device; |
| bool bLuminosity = |
| pSMaskDict->GetStringFor(pdfium::transparency::kSoftMaskSubType) != |
| pdfium::transparency::kAlpha; |
| int width = pClipRect->right - pClipRect->left; |
| int height = pClipRect->bottom - pClipRect->top; |
| FXDIB_Format format; |
| #if _FX_PLATFORM_ == _FX_PLATFORM_APPLE_ || defined _SKIA_SUPPORT_ || \ |
| defined _SKIA_SUPPORT_PATHS_ |
| format = bLuminosity ? FXDIB_Rgb32 : FXDIB_8bppMask; |
| #else |
| format = bLuminosity ? FXDIB_Rgb : FXDIB_8bppMask; |
| #endif |
| if (!bitmap_device.Create(width, height, format, nullptr)) |
| return nullptr; |
| |
| CFX_DIBitmap& bitmap = *bitmap_device.GetBitmap(); |
| int nCSFamily = 0; |
| if (bLuminosity) { |
| FX_ARGB back_color = |
| GetBackColor(pSMaskDict, pGroup->GetDict(), &nCSFamily); |
| bitmap.Clear(back_color); |
| } else { |
| bitmap.Clear(0); |
| } |
| |
| const CPDF_Dictionary* pFormResource = nullptr; |
| if (form.GetDict()) |
| pFormResource = form.GetDict()->GetDictFor("Resources"); |
| CPDF_RenderOptions options; |
| options.SetColorMode(bLuminosity ? CPDF_RenderOptions::kNormal |
| : CPDF_RenderOptions::kAlpha); |
| CPDF_RenderStatus status(m_pContext.Get(), &bitmap_device); |
| status.SetOptions(options); |
| status.SetGroupFamily(nCSFamily); |
| status.SetLoadMask(bLuminosity); |
| status.SetStdCS(true); |
| status.SetFormResource(pFormResource); |
| status.SetDropObjects(m_bDropObjects); |
| status.Initialize(nullptr, nullptr); |
| status.RenderObjectList(&form, matrix); |
| |
| auto pMask = pdfium::MakeRetain<CFX_DIBitmap>(); |
| if (!pMask->Create(width, height, FXDIB_8bppMask)) |
| return nullptr; |
| |
| uint8_t* dest_buf = pMask->GetBuffer(); |
| int dest_pitch = pMask->GetPitch(); |
| uint8_t* src_buf = bitmap.GetBuffer(); |
| int src_pitch = bitmap.GetPitch(); |
| std::vector<uint8_t> transfers(256); |
| if (pFunc) { |
| std::vector<float> results(pFunc->CountOutputs()); |
| for (int i = 0; i < 256; i++) { |
| float input = (float)i / 255.0f; |
| int nresult; |
| pFunc->Call(&input, 1, results.data(), &nresult); |
| transfers[i] = FXSYS_round(results[0] * 255); |
| } |
| } else { |
| for (int i = 0; i < 256; i++) { |
| transfers[i] = i; |
| } |
| } |
| if (bLuminosity) { |
| int Bpp = bitmap.GetBPP() / 8; |
| for (int row = 0; row < height; row++) { |
| uint8_t* dest_pos = dest_buf + row * dest_pitch; |
| uint8_t* src_pos = src_buf + row * src_pitch; |
| for (int col = 0; col < width; col++) { |
| *dest_pos++ = transfers[FXRGB2GRAY(src_pos[2], src_pos[1], *src_pos)]; |
| src_pos += Bpp; |
| } |
| } |
| } else if (pFunc) { |
| int size = dest_pitch * height; |
|