From 483f3c485ac727cbf74c89e3912e5a4475d5f8f9 Mon Sep 17 00:00:00 2001 From: npm Date: Thu, 17 Nov 2016 13:50:44 -0800 Subject: Move CPDF_RenderStatus from render_int Moved CPDF_RenderStatus to its own class and removed unused methods. I only added some spaces and removed some {}s in cpdf_renderstatus.cpp. Will do cleanup of the file as a followup because it would be too hard to keep track of what's changed in this CL. Review-Url: https://codereview.chromium.org/2513693002 --- core/fpdfapi/render/cpdf_renderstatus.cpp | 2626 +++++++++++++++++++++++++++++ 1 file changed, 2626 insertions(+) create mode 100644 core/fpdfapi/render/cpdf_renderstatus.cpp (limited to 'core/fpdfapi/render/cpdf_renderstatus.cpp') diff --git a/core/fpdfapi/render/cpdf_renderstatus.cpp b/core/fpdfapi/render/cpdf_renderstatus.cpp new file mode 100644 index 0000000000..f16d3f8ad1 --- /dev/null +++ b/core/fpdfapi/render/cpdf_renderstatus.cpp @@ -0,0 +1,2626 @@ +// 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 +#include +#include +#include + +#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_graphicstates.h" +#include "core/fpdfapi/page/cpdf_form.h" +#include "core/fpdfapi/page/cpdf_formobject.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/page/pageint.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_docrenderdata.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_textrenderer.h" +#include "core/fpdfapi/render/cpdf_type3cache.h" +#include "core/fpdfapi/render/render_int.h" +#include "core/fpdfdoc/cpdf_occontext.h" +#include "core/fxcodec/fx_codec.h" +#include "core/fxcrt/fx_safe_types.h" +#include "core/fxge/cfx_graphstatedata.h" +#include "core/fxge/cfx_fxgedevice.h" +#include "core/fxge/cfx_renderdevice.h" +#include "core/fxge/cfx_pathdata.h" +#include "core/fxge/ifx_renderdevicedriver.h" +#include "third_party/base/numerics/safe_math.h" + +#ifdef _SKIA_SUPPORT_ +#include "core/fxge/skia/fx_skia_device.h" +#endif + +#define SHADING_STEPS 256 + +namespace { + +void ReleaseCachedType3(CPDF_Type3Font* pFont) { + if (!pFont->m_pDocument) + return; + + pFont->m_pDocument->GetRenderData()->ReleaseCachedType3(pFont); + pFont->m_pDocument->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); + } + + uint32_t m_dwCount; + CPDF_Type3Font* const m_pType3Font; +}; + +uint32_t CountOutputs( + const std::vector>& funcs) { + uint32_t total = 0; + for (const auto& func : funcs) { + if (func) + total += func->CountOutputs(); + } + return total; +} + +void DrawAxialShading(CFX_DIBitmap* pBitmap, + CFX_Matrix* pObject2Bitmap, + CPDF_Dictionary* pDict, + const std::vector>& funcs, + CPDF_ColorSpace* pCS, + int alpha) { + ASSERT(pBitmap->GetFormat() == FXDIB_Argb); + CPDF_Array* pCoords = pDict->GetArrayFor("Coords"); + if (!pCoords) + return; + + FX_FLOAT start_x = pCoords->GetNumberAt(0); + FX_FLOAT start_y = pCoords->GetNumberAt(1); + FX_FLOAT end_x = pCoords->GetNumberAt(2); + FX_FLOAT end_y = pCoords->GetNumberAt(3); + FX_FLOAT t_min = 0; + FX_FLOAT t_max = 1.0f; + 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(); + FX_FLOAT x_span = end_x - start_x; + FX_FLOAT y_span = end_y - start_y; + FX_FLOAT axis_len_square = (x_span * x_span) + (y_span * y_span); + CFX_Matrix matrix; + matrix.SetReverse(*pObject2Bitmap); + uint32_t total_results = + std::max(CountOutputs(funcs), pCS->CountComponents()); + CFX_FixedBufGrow result_array(total_results); + FX_FLOAT* pResults = result_array; + FXSYS_memset(pResults, 0, total_results * sizeof(FX_FLOAT)); + uint32_t rgb_array[SHADING_STEPS]; + for (int i = 0; i < SHADING_STEPS; i++) { + FX_FLOAT input = (t_max - t_min) * i / SHADING_STEPS + t_min; + int offset = 0; + for (const auto& func : funcs) { + if (func) { + int nresults = 0; + if (func->Call(&input, 1, pResults + offset, nresults)) + offset += nresults; + } + } + FX_FLOAT R = 0.0f, G = 0.0f, B = 0.0f; + pCS->GetRGB(pResults, R, G, B); + rgb_array[i] = + FXARGB_TODIB(FXARGB_MAKE(alpha, FXSYS_round(R * 255), + FXSYS_round(G * 255), FXSYS_round(B * 255))); + } + int pitch = pBitmap->GetPitch(); + for (int row = 0; row < height; row++) { + uint32_t* dib_buf = (uint32_t*)(pBitmap->GetBuffer() + row * pitch); + for (int column = 0; column < width; column++) { + FX_FLOAT x = (FX_FLOAT)column, y = (FX_FLOAT)row; + matrix.Transform(x, y); + FX_FLOAT scale = (((x - start_x) * x_span) + ((y - start_y) * y_span)) / + axis_len_square; + int index = (int32_t)(scale * (SHADING_STEPS - 1)); + if (index < 0) { + if (!bStartExtend) + continue; + + index = 0; + } else if (index >= SHADING_STEPS) { + if (!bEndExtend) + continue; + + index = SHADING_STEPS - 1; + } + dib_buf[column] = rgb_array[index]; + } + } +} + +void DrawRadialShading(CFX_DIBitmap* pBitmap, + CFX_Matrix* pObject2Bitmap, + CPDF_Dictionary* pDict, + const std::vector>& funcs, + CPDF_ColorSpace* pCS, + int alpha) { + ASSERT(pBitmap->GetFormat() == FXDIB_Argb); + CPDF_Array* pCoords = pDict->GetArrayFor("Coords"); + if (!pCoords) + return; + + FX_FLOAT start_x = pCoords->GetNumberAt(0); + FX_FLOAT start_y = pCoords->GetNumberAt(1); + FX_FLOAT start_r = pCoords->GetNumberAt(2); + FX_FLOAT end_x = pCoords->GetNumberAt(3); + FX_FLOAT end_y = pCoords->GetNumberAt(4); + FX_FLOAT end_r = pCoords->GetNumberAt(5); + CFX_Matrix matrix; + matrix.SetReverse(*pObject2Bitmap); + FX_FLOAT t_min = 0; + FX_FLOAT t_max = 1.0f; + 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 total_results = + std::max(CountOutputs(funcs), pCS->CountComponents()); + CFX_FixedBufGrow result_array(total_results); + FX_FLOAT* pResults = result_array; + FXSYS_memset(pResults, 0, total_results * sizeof(FX_FLOAT)); + uint32_t rgb_array[SHADING_STEPS]; + for (int i = 0; i < SHADING_STEPS; i++) { + FX_FLOAT input = (t_max - t_min) * i / SHADING_STEPS + t_min; + int offset = 0; + for (const auto& func : funcs) { + if (func) { + int nresults; + if (func->Call(&input, 1, pResults + offset, nresults)) + offset += nresults; + } + } + FX_FLOAT R = 0.0f, G = 0.0f, B = 0.0f; + pCS->GetRGB(pResults, R, G, B); + rgb_array[i] = + FXARGB_TODIB(FXARGB_MAKE(alpha, FXSYS_round(R * 255), + FXSYS_round(G * 255), FXSYS_round(B * 255))); + } + FX_FLOAT a = ((start_x - end_x) * (start_x - end_x)) + + ((start_y - end_y) * (start_y - end_y)) - + ((start_r - end_r) * (start_r - end_r)); + int width = pBitmap->GetWidth(); + int height = pBitmap->GetHeight(); + int pitch = pBitmap->GetPitch(); + bool bDecreasing = false; + if (start_r > end_r) { + int length = (int)FXSYS_sqrt((((start_x - end_x) * (start_x - end_x)) + + ((start_y - end_y) * (start_y - end_y)))); + if (length < start_r - end_r) { + bDecreasing = true; + } + } + for (int row = 0; row < height; row++) { + uint32_t* dib_buf = (uint32_t*)(pBitmap->GetBuffer() + row * pitch); + for (int column = 0; column < width; column++) { + FX_FLOAT x = (FX_FLOAT)column, y = (FX_FLOAT)row; + matrix.Transform(x, y); + FX_FLOAT b = -2 * (((x - start_x) * (end_x - start_x)) + + ((y - start_y) * (end_y - start_y)) + + (start_r * (end_r - start_r))); + FX_FLOAT c = ((x - start_x) * (x - start_x)) + + ((y - start_y) * (y - start_y)) - (start_r * start_r); + FX_FLOAT s; + if (a == 0) { + s = -c / b; + } else { + FX_FLOAT b2_4ac = (b * b) - 4 * (a * c); + if (b2_4ac < 0) { + continue; + } + FX_FLOAT root = FXSYS_sqrt(b2_4ac); + FX_FLOAT s1, s2; + if (a > 0) { + s1 = (-b - root) / (2 * a); + s2 = (-b + root) / (2 * a); + } else { + s2 = (-b - root) / (2 * a); + s1 = (-b + root) / (2 * a); + } + if (bDecreasing) { + if (s1 >= 0 || bStartExtend) { + s = s1; + } else { + s = s2; + } + } else { + if (s2 <= 1.0f || bEndExtend) { + s = s2; + } else { + s = s1; + } + } + if ((start_r + s * (end_r - start_r)) < 0) { + continue; + } + } + int index = (int32_t)(s * (SHADING_STEPS - 1)); + if (index < 0) { + if (!bStartExtend) { + continue; + } + index = 0; + } + if (index >= SHADING_STEPS) { + if (!bEndExtend) { + continue; + } + index = SHADING_STEPS - 1; + } + dib_buf[column] = rgb_array[index]; + } + } +} + +void DrawFuncShading(CFX_DIBitmap* pBitmap, + CFX_Matrix* pObject2Bitmap, + CPDF_Dictionary* pDict, + const std::vector>& funcs, + CPDF_ColorSpace* pCS, + int alpha) { + ASSERT(pBitmap->GetFormat() == FXDIB_Argb); + CPDF_Array* pDomain = pDict->GetArrayFor("Domain"); + FX_FLOAT xmin = 0, ymin = 0, xmax = 1.0f, 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, reverse_matrix; + matrix.SetReverse(*pObject2Bitmap); + reverse_matrix.SetReverse(mtDomain2Target); + matrix.Concat(reverse_matrix); + int width = pBitmap->GetWidth(); + int height = pBitmap->GetHeight(); + int pitch = pBitmap->GetPitch(); + uint32_t total_results = + std::max(CountOutputs(funcs), pCS->CountComponents()); + CFX_FixedBufGrow result_array(total_results); + FX_FLOAT* pResults = result_array; + FXSYS_memset(pResults, 0, total_results * sizeof(FX_FLOAT)); + for (int row = 0; row < height; row++) { + uint32_t* dib_buf = (uint32_t*)(pBitmap->GetBuffer() + row * pitch); + for (int column = 0; column < width; column++) { + FX_FLOAT x = (FX_FLOAT)column, y = (FX_FLOAT)row; + matrix.Transform(x, y); + if (x < xmin || x > xmax || y < ymin || y > ymax) { + continue; + } + FX_FLOAT input[2]; + int offset = 0; + input[0] = x; + input[1] = y; + for (const auto& func : funcs) { + if (func) { + int nresults; + if (func->Call(input, 2, pResults + offset, nresults)) + offset += nresults; + } + } + FX_FLOAT R = 0.0f, G = 0.0f, B = 0.0f; + pCS->GetRGB(pResults, R, G, B); + dib_buf[column] = FXARGB_TODIB(FXARGB_MAKE( + alpha, (int32_t)(R * 255), (int32_t)(G * 255), (int32_t)(B * 255))); + } + } +} + +bool GetScanlineIntersect(int y, + FX_FLOAT x1, + FX_FLOAT y1, + FX_FLOAT x2, + FX_FLOAT y2, + FX_FLOAT* x) { + if (y1 == y2) + return false; + + if (y1 < y2) { + if (y < y1 || y > y2) + return false; + } else { + if (y < y2 || y > y1) + return false; + } + *x = x1 + ((x2 - x1) * (y - y1) / (y2 - y1)); + return true; +} + +void DrawGouraud(CFX_DIBitmap* pBitmap, + int alpha, + CPDF_MeshVertex triangle[3]) { + FX_FLOAT min_y = triangle[0].y, max_y = triangle[0].y; + for (int i = 1; i < 3; i++) { + if (min_y > triangle[i].y) { + min_y = triangle[i].y; + } + if (max_y < triangle[i].y) { + max_y = triangle[i].y; + } + } + if (min_y == max_y) { + return; + } + int min_yi = (int)FXSYS_floor(min_y), max_yi = (int)FXSYS_ceil(max_y); + if (min_yi < 0) { + min_yi = 0; + } + if (max_yi >= pBitmap->GetHeight()) { + max_yi = pBitmap->GetHeight() - 1; + } + for (int y = min_yi; y <= max_yi; y++) { + int nIntersects = 0; + FX_FLOAT inter_x[3], r[3], g[3], b[3]; + for (int i = 0; i < 3; i++) { + CPDF_MeshVertex& vertex1 = triangle[i]; + CPDF_MeshVertex& vertex2 = triangle[(i + 1) % 3]; + bool bIntersect = GetScanlineIntersect(y, vertex1.x, vertex1.y, vertex2.x, + vertex2.y, &inter_x[nIntersects]); + if (!bIntersect) + continue; + + FX_FLOAT y_dist = (y - vertex1.y) / (vertex2.y - vertex1.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)FXSYS_floor(inter_x[0]); + max_x = (int)FXSYS_ceil(inter_x[1]); + start_index = 0; + end_index = 1; + } else { + min_x = (int)FXSYS_floor(inter_x[1]); + max_x = (int)FXSYS_ceil(inter_x[0]); + start_index = 1; + end_index = 0; + } + int start_x = min_x, end_x = max_x; + if (start_x < 0) { + start_x = 0; + } + if (end_x > pBitmap->GetWidth()) { + end_x = pBitmap->GetWidth(); + } + uint8_t* dib_buf = + pBitmap->GetBuffer() + y * pBitmap->GetPitch() + start_x * 4; + FX_FLOAT r_unit = (r[end_index] - r[start_index]) / (max_x - min_x); + FX_FLOAT g_unit = (g[end_index] - g[start_index]) / (max_x - min_x); + FX_FLOAT b_unit = (b[end_index] - b[start_index]) / (max_x - min_x); + FX_FLOAT R = r[start_index] + (start_x - min_x) * r_unit; + FX_FLOAT G = g[start_index] + (start_x - min_x) * g_unit; + FX_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, + FXARGB_MAKE(alpha, (int32_t)(R * 255), (int32_t)(G * 255), + (int32_t)(B * 255))); + dib_buf += 4; + } + } +} + +void DrawFreeGouraudShading( + CFX_DIBitmap* pBitmap, + CFX_Matrix* pObject2Bitmap, + CPDF_Stream* pShadingStream, + const std::vector>& funcs, + 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]; + FXSYS_memset(triangle, 0, sizeof(triangle)); + + while (!stream.BitStream()->IsEOF()) { + CPDF_MeshVertex vertex; + uint32_t flag = stream.GetVertex(vertex, pObject2Bitmap); + if (flag == 0) { + triangle[0] = vertex; + for (int j = 1; j < 3; j++) { + stream.GetVertex(triangle[j], pObject2Bitmap); + } + } else { + if (flag == 1) { + triangle[0] = triangle[1]; + } + triangle[1] = triangle[2]; + triangle[2] = vertex; + } + DrawGouraud(pBitmap, alpha, triangle); + } +} + +void DrawLatticeGouraudShading( + CFX_DIBitmap* pBitmap, + CFX_Matrix* pObject2Bitmap, + CPDF_Stream* pShadingStream, + const std::vector>& funcs, + 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::unique_ptr vertex( + FX_Alloc2D(CPDF_MeshVertex, row_verts, 2)); + if (!stream.GetVertexRow(vertex.get(), row_verts, pObject2Bitmap)) + return; + + int last_index = 0; + while (1) { + CPDF_MeshVertex* last_row = vertex.get() + last_index * row_verts; + CPDF_MeshVertex* this_row = vertex.get() + (1 - last_index) * row_verts; + if (!stream.GetVertexRow(this_row, row_verts, pObject2Bitmap)) + return; + + CPDF_MeshVertex triangle[3]; + for (int i = 1; i < row_verts; i++) { + triangle[0] = last_row[i]; + triangle[1] = this_row[i - 1]; + triangle[2] = last_row[i - 1]; + DrawGouraud(pBitmap, alpha, triangle); + triangle[2] = this_row[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(FX_PATHPOINT* pPoints) { + float p[4]; + int i; + x.GetPoints(p); + for (i = 0; i < 4; i++) { + pPoints[i].m_PointX = p[i]; + } + y.GetPoints(p); + for (i = 0; i < 4; i++) { + pPoints[i].m_PointY = p[i]; + } + } + void GetPointsReverse(FX_PATHPOINT* pPoints) { + float p[4]; + int i; + x.GetPointsReverse(p); + for (i = 0; i < 4; i++) { + pPoints[i].m_PointX = p[i]; + } + y.GetPointsReverse(p); + for (i = 0; i < 4; i++) { + pPoints[i].m_PointY = p[i]; + } + } + float Distance() { return x.Distance() + y.Distance(); } +}; + +int BiInterpolImpl(int c0, + int c1, + int c2, + int c3, + int x, + int y, + int x_scale, + int y_scale) { + int x1 = c0 + (c3 - c0) * x / x_scale; + int x2 = c1 + (c2 - c1) * x / x_scale; + return x1 + (x2 - x1) * y / y_scale; +} + +struct Coon_Color { + Coon_Color() { FXSYS_memset(comp, 0, sizeof(int) * 3); } + int comp[3]; + + void BiInterpol(Coon_Color colors[4], + int x, + int y, + int x_scale, + int y_scale) { + 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); + } + } + + int Distance(Coon_Color& o) { + return std::max({FXSYS_abs(comp[0] - o.comp[0]), + FXSYS_abs(comp[1] - o.comp[1]), + FXSYS_abs(comp[2] - o.comp[2])}); + } +}; + +struct CPDF_PatchDrawer { + Coon_Color patch_colors[4]; + int max_delta; + CFX_PathData path; + CFX_RenderDevice* pDevice; + int fill_mode; + int alpha; + 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; + div_colors[0].BiInterpol(patch_colors, left, bottom, x_scale, y_scale); + if (!bSmall) { + div_colors[1].BiInterpol(patch_colors, left, bottom + 1, x_scale, + y_scale); + div_colors[2].BiInterpol(patch_colors, left + 1, bottom + 1, x_scale, + y_scale); + div_colors[3].BiInterpol(patch_colors, left + 1, bottom, x_scale, + y_scale); + 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]); + } +#define COONCOLOR_THRESHOLD 4 + if (bSmall || + (d_bottom < COONCOLOR_THRESHOLD && d_left < COONCOLOR_THRESHOLD && + d_top < COONCOLOR_THRESHOLD && d_right < COONCOLOR_THRESHOLD)) { + FX_PATHPOINT* pPoints = path.GetPoints(); + C1.GetPoints(pPoints); + D2.GetPoints(pPoints + 3); + C2.GetPointsReverse(pPoints + 6); + D1.GetPointsReverse(pPoints + 9); + int fillFlags = FXFILL_WINDING | FXFILL_FULLCOVER; + if (fill_mode & RENDER_NOPATHSMOOTH) { + fillFlags |= FXFILL_NOPATHSMOOTH; + } + pDevice->DrawPath( + &path, nullptr, nullptr, + FXARGB_MAKE(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()); + } + } + } +}; + +void DrawCoonPatchMeshes( + ShadingType type, + CFX_DIBitmap* pBitmap, + CFX_Matrix* pObject2Bitmap, + CPDF_Stream* pShadingStream, + const std::vector>& funcs, + CPDF_ColorSpace* pCS, + int fill_mode, + int alpha) { + ASSERT(pBitmap->GetFormat() == FXDIB_Argb); + ASSERT(type == kCoonsPatchMeshShading || + type == kTensorProductPatchMeshShading); + + CFX_FxgeDevice 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.fill_mode = fill_mode; + patch.path.SetPointCount(13); + FX_PATHPOINT* pPoints = patch.path.GetPoints(); + pPoints[0].m_Flag = FXPT_MOVETO; + for (int i = 1; i < 13; i++) + pPoints[i].m_Flag = FXPT_BEZIERTO; + CFX_PointF coords[16]; + int point_count = type == kTensorProductPatchMeshShading ? 16 : 12; + while (!stream.BitStream()->IsEOF()) { + uint32_t flag = stream.GetFlag(); + 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]; + } + FXSYS_memcpy(coords, tempCoords, sizeof(tempCoords)); + Coon_Color tempColors[2]; + tempColors[0] = patch.patch_colors[flag]; + tempColors[1] = patch.patch_colors[(flag + 1) % 4]; + FXSYS_memcpy(patch.patch_colors, tempColors, sizeof(Coon_Color) * 2); + } + for (i = iStartPoint; i < point_count; i++) { + stream.GetCoords(coords[i].x, coords[i].y); + pObject2Bitmap->Transform(coords[i].x, coords[i].y); + } + for (i = iStartColor; i < 4; i++) { + FX_FLOAT r = 0.0f, g = 0.0f, b = 0.0f; + stream.GetColor(r, g, b); + 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 >= (FX_FLOAT)pBitmap->GetWidth() || + bbox.top <= 0 || bbox.bottom >= (FX_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); + } +} + +std::unique_ptr DrawPatternBitmap( + CPDF_Document* pDoc, + CPDF_PageRenderCache* pCache, + CPDF_TilingPattern* pPattern, + const CFX_Matrix* pObject2Device, + int width, + int height, + int flags) { + std::unique_ptr pBitmap(new CFX_DIBitmap); + if (!pBitmap->Create(width, height, + pPattern->colored() ? FXDIB_Argb : FXDIB_8bppMask)) { + return nullptr; + } + CFX_FxgeDevice bitmap_device; + bitmap_device.Attach(pBitmap.get(), false, nullptr, false); + pBitmap->Clear(0); + CFX_FloatRect cell_bbox = pPattern->bbox(); + pPattern->pattern_to_form()->TransformRect(cell_bbox); + pObject2Device->TransformRect(cell_bbox); + CFX_FloatRect bitmap_rect(0.0f, 0.0f, (FX_FLOAT)width, (FX_FLOAT)height); + CFX_Matrix mtAdjust; + mtAdjust.MatchRect(bitmap_rect, cell_bbox); + CFX_Matrix mtPattern2Bitmap = *pObject2Device; + mtPattern2Bitmap.Concat(mtAdjust); + CPDF_RenderOptions options; + if (!pPattern->colored()) + options.m_ColorMode = RENDER_COLOR_ALPHA; + + flags |= RENDER_FORCE_HALFTONE; + options.m_Flags = flags; + CPDF_RenderContext context(pDoc, pCache); + context.AppendLayer(pPattern->form(), &mtPattern2Bitmap); + context.Render(&bitmap_device, &options, nullptr); + return pBitmap; +} + +} // namespace + +// static +int CPDF_RenderStatus::s_CurrentRecursionDepth = 0; + +CPDF_RenderStatus::CPDF_RenderStatus() + : m_pFormResource(nullptr), + m_pPageResource(nullptr), + m_pContext(nullptr), + m_bStopped(false), + m_pDevice(nullptr), + m_pCurObj(nullptr), + m_pStopObj(nullptr), + m_bPrint(false), + m_Transparency(0), + m_bDropObjects(false), + m_bStdCS(false), + m_GroupFamily(0), + m_bLoadMask(false), + m_pType3Char(nullptr), + m_T3FillColor(0), + m_curBlend(FXDIB_BLEND_NORMAL) {} + +CPDF_RenderStatus::~CPDF_RenderStatus() {} + +bool CPDF_RenderStatus::Initialize(CPDF_RenderContext* pContext, + CFX_RenderDevice* pDevice, + const CFX_Matrix* pDeviceMatrix, + const CPDF_PageObject* pStopObj, + const CPDF_RenderStatus* pParentState, + const CPDF_GraphicStates* pInitialStates, + const CPDF_RenderOptions* pOptions, + int transparency, + bool bDropObjects, + CPDF_Dictionary* pFormResource, + bool bStdCS, + CPDF_Type3Char* pType3Char, + FX_ARGB fill_color, + uint32_t GroupFamily, + bool bLoadMask) { + m_pContext = pContext; + m_pDevice = pDevice; + m_bPrint = m_pDevice->GetDeviceClass() != FXDC_DISPLAY; + if (pDeviceMatrix) { + m_DeviceMatrix = *pDeviceMatrix; + } + m_pStopObj = pStopObj; + if (pOptions) { + m_Options = *pOptions; + } + m_bDropObjects = bDropObjects; + m_bStdCS = bStdCS; + m_T3FillColor = fill_color; + m_pType3Char = pType3Char; + m_GroupFamily = GroupFamily; + m_bLoadMask = bLoadMask; + m_pFormResource = pFormResource; + 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.SetFillRGB( + pParentState->m_InitialStates.m_ColorState.GetFillRGB()); + m_InitialStates.m_ColorState.GetMutableFillColor()->Copy( + pParentState->m_InitialStates.m_ColorState.GetFillColor()); + } + if (!m_InitialStates.m_ColorState.HasStrokeColor()) { + m_InitialStates.m_ColorState.SetStrokeRGB( + pParentState->m_InitialStates.m_ColorState.GetFillRGB()); + m_InitialStates.m_ColorState.GetMutableStrokeColor()->Copy( + pParentState->m_InitialStates.m_ColorState.GetStrokeColor()); + } + } + } else { + m_InitialStates.DefaultStates(); + } + m_pImageRenderer.reset(); + m_Transparency = transparency; + return true; +} + +void CPDF_RenderStatus::RenderObjectList( + const CPDF_PageObjectHolder* pObjectHolder, + const CFX_Matrix* pObj2Device) { +#if defined _SKIA_SUPPORT_ + DebugVerifyDeviceIsPreMultiplied(); +#endif + CFX_FloatRect clip_rect(m_pDevice->GetClipBox()); + CFX_Matrix device2object; + device2object.SetReverse(*pObj2Device); + device2object.TransformRect(clip_rect); + + for (const auto& pCurObj : *pObjectHolder->GetPageObjectList()) { + if (pCurObj.get() == m_pStopObj) { + m_bStopped = true; + return; + } + if (!pCurObj) + continue; + + if (pCurObj->m_Left > clip_rect.right || + pCurObj->m_Right < clip_rect.left || + pCurObj->m_Bottom > clip_rect.top || + pCurObj->m_Top < clip_rect.bottom) { + continue; + } + RenderSingleObject(pCurObj.get(), pObj2Device); + if (m_bStopped) + return; + } +#if defined _SKIA_SUPPORT_ + DebugVerifyDeviceIsPreMultiplied(); +#endif +} + +void CPDF_RenderStatus::RenderSingleObject(CPDF_PageObject* pObj, + const CFX_Matrix* pObj2Device) { +#if defined _SKIA_SUPPORT_ + DebugVerifyDeviceIsPreMultiplied(); +#endif + CFX_AutoRestorer restorer(&s_CurrentRecursionDepth); + if (++s_CurrentRecursionDepth > kRenderMaxRecursionDepth) { + return; + } + m_pCurObj = pObj; + if (m_Options.m_pOCContext && pObj->m_ContentMark) { + if (!m_Options.m_pOCContext->CheckObjectVisible(pObj)) { + return; + } + } + ProcessClipPath(pObj->m_ClipPath, pObj2Device); + if (ProcessTransparency(pObj, pObj2Device)) { + return; + } + ProcessObjectNoClip(pObj, pObj2Device); +#if defined _SKIA_SUPPORT_ + DebugVerifyDeviceIsPreMultiplied(); +#endif +} + +bool CPDF_RenderStatus::ContinueSingleObject(CPDF_PageObject* pObj, + const CFX_Matrix* pObj2Device, + IFX_Pause* pPause) { + if (m_pImageRenderer) { + if (m_pImageRenderer->Continue(pPause)) + return true; + + if (!m_pImageRenderer->m_Result) + DrawObjWithBackground(pObj, pObj2Device); + m_pImageRenderer.reset(); + return false; + } + + m_pCurObj = pObj; + if (m_Options.m_pOCContext && pObj->m_ContentMark && + !m_Options.m_pOCContext->CheckObjectVisible(pObj)) { + return false; + } + + ProcessClipPath(pObj->m_ClipPath, pObj2Device); + if (ProcessTransparency(pObj, pObj2Device)) + return false; + + if (pObj->IsImage()) { + m_pImageRenderer.reset(new CPDF_ImageRenderer); + if (!m_pImageRenderer->Start(this, pObj, pObj2Device, false)) { + if (!m_pImageRenderer->m_Result) + DrawObjWithBackground(pObj, pObj2Device); + m_pImageRenderer.reset(); + return false; + } + return ContinueSingleObject(pObj, pObj2Device, pPause); + } + + ProcessObjectNoClip(pObj, pObj2Device); + return false; +} + +bool CPDF_RenderStatus::GetObjectClippedRect(const CPDF_PageObject* pObj, + const CFX_Matrix* pObj2Device, + bool bLogical, + FX_RECT& rect) const { + rect = pObj->GetBBox(pObj2Device); + FX_RECT rtClip = m_pDevice->GetClipBox(); + if (!bLogical) { + CFX_Matrix dCTM = m_pDevice->GetCTM(); + FX_FLOAT a = FXSYS_fabs(dCTM.a); + FX_FLOAT d = FXSYS_fabs(dCTM.d); + if (a != 1.0f || d != 1.0f) { + rect.right = rect.left + (int32_t)FXSYS_ceil((FX_FLOAT)rect.Width() * a); + rect.bottom = rect.top + (int32_t)FXSYS_ceil((FX_FLOAT)rect.Height() * d); + rtClip.right = + rtClip.left + (int32_t)FXSYS_ceil((FX_FLOAT)rtClip.Width() * a); + rtClip.bottom = + rtClip.top + (int32_t)FXSYS_ceil((FX_FLOAT)rtClip.Height() * d); + } + } + rect.Intersect(rtClip); + return rect.IsEmpty(); +} + +void CPDF_RenderStatus::ProcessObjectNoClip(CPDF_PageObject* pObj, + const CFX_Matrix* pObj2Device) { +#if defined _SKIA_SUPPORT_ + DebugVerifyDeviceIsPreMultiplied(); +#endif + bool bRet = false; + switch (pObj->GetType()) { + case CPDF_PageObject::TEXT: + bRet = ProcessText(pObj->AsText(), pObj2Device, nullptr); + break; + case CPDF_PageObject::PATH: + bRet = ProcessPath(pObj->AsPath(), pObj2Device); + break; + case CPDF_PageObject::IMAGE: + bRet = ProcessImage(pObj->AsImage(), pObj2Device); + break; + case CPDF_PageObject::SHADING: + ProcessShading(pObj->AsShading(), pObj2Device); + return; + case CPDF_PageObject::FORM: + bRet = ProcessForm(pObj->AsForm(), pObj2Device); + break; + } + if (!bRet) + DrawObjWithBackground(pObj, pObj2Device); +#if defined _SKIA_SUPPORT_ + DebugVerifyDeviceIsPreMultiplied(); +#endif +} + +bool CPDF_RenderStatus::DrawObjWithBlend(CPDF_PageObject* pObj, + const CFX_Matrix* pObj2Device) { + bool bRet = false; + switch (pObj->GetType()) { + case CPDF_PageObject::PATH: + bRet = ProcessPath(pObj->AsPath(), pObj2Device); + break; + case CPDF_PageObject::IMAGE: + bRet = ProcessImage(pObj->AsImage(), pObj2Device); + break; + case CPDF_PageObject::FORM: + bRet = ProcessForm(pObj->AsForm(), pObj2Device); + break; + default: + break; + } + return bRet; +} + +void CPDF_RenderStatus::GetScaledMatrix(CFX_Matrix& matrix) const { + CFX_Matrix dCTM = m_pDevice->GetCTM(); + matrix.a *= FXSYS_fabs(dCTM.a); + matrix.d *= FXSYS_fabs(dCTM.d); +} + +void CPDF_RenderStatus::DrawObjWithBackground(CPDF_PageObject* pObj, + const CFX_Matrix* pObj2Device) { + FX_RECT rect; + if (GetObjectClippedRect(pObj, pObj2Device, false, rect)) { + 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, m_pDevice, rect, pObj, &m_Options, res)) { + return; + } + CFX_Matrix matrix = *pObj2Device; + matrix.Concat(*buffer.GetMatrix()); + GetScaledMatrix(matrix); + CPDF_Dictionary* pFormResource = nullptr; + if (pObj->IsForm()) { + const CPDF_FormObject* pFormObj = pObj->AsForm(); + if (pFormObj->m_pForm && pFormObj->m_pForm->m_pFormDict) { + pFormResource = pFormObj->m_pForm->m_pFormDict->GetDictFor("Resources"); + } + } + CPDF_RenderStatus status; + status.Initialize(m_pContext, buffer.GetDevice(), buffer.GetMatrix(), nullptr, + nullptr, nullptr, &m_Options, m_Transparency, + m_bDropObjects, pFormResource); + status.RenderSingleObject(pObj, &matrix); + buffer.OutputToDevice(); +} + +bool CPDF_RenderStatus::ProcessForm(const CPDF_FormObject* pFormObj, + const CFX_Matrix* pObj2Device) { +#if defined _SKIA_SUPPORT_ + DebugVerifyDeviceIsPreMultiplied(); +#endif + CPDF_Dictionary* pOC = pFormObj->m_pForm->m_pFormDict->GetDictFor("OC"); + if (pOC && m_Options.m_pOCContext && + !m_Options.m_pOCContext->CheckOCGVisible(pOC)) { + return true; + } + CFX_Matrix matrix = pFormObj->m_FormMatrix; + matrix.Concat(*pObj2Device); + CPDF_Dictionary* pResources = nullptr; + if (pFormObj->m_pForm && pFormObj->m_pForm->m_pFormDict) { + pResources = pFormObj->m_pForm->m_pFormDict->GetDictFor("Resources"); + } + CPDF_RenderStatus status; + status.Initialize(m_pContext, m_pDevice, nullptr, m_pStopObj, this, pFormObj, + &m_Options, m_Transparency, m_bDropObjects, pResources, + false); + status.m_curBlend = m_curBlend; + m_pDevice->SaveState(); + status.RenderObjectList(pFormObj->m_pForm.get(), &matrix); + m_bStopped = status.m_bStopped; + m_pDevice->RestoreState(false); +#if defined _SKIA_SUPPORT_ + DebugVerifyDeviceIsPreMultiplied(); +#endif + return true; +} + +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 CPDF_RenderStatus::ProcessPath(CPDF_PathObject* pPathObj, + const CFX_Matrix* pObj2Device) { + int FillType = pPathObj->m_FillType; + bool bStroke = pPathObj->m_bStroke; + ProcessPathPattern(pPathObj, pObj2Device, 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->m_Matrix; + path_matrix.Concat(*pObj2Device); + if (!IsAvailableMatrix(path_matrix)) + return true; + + if (FillType && (m_Options.m_Flags & RENDER_RECT_AA)) + FillType |= FXFILL_RECT_AA; + if (m_Options.m_Flags & RENDER_FILL_FULLCOVER) + FillType |= FXFILL_FULLCOVER; + if (m_Options.m_Flags & RENDER_NOPATHSMOOTH) + FillType |= FXFILL_NOPATHSMOOTH; + if (bStroke) + FillType |= FX_FILL_STROKE; + + const CPDF_PageObject* pPageObj = + static_cast(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.m_Flags & RENDER_THINLINE) + graphState.SetLineWidth(0); + return m_pDevice->DrawPathWithBlend( + pPathObj->m_Path.GetObject(), &path_matrix, graphState.GetObject(), + fill_argb, stroke_argb, FillType, m_curBlend); +} + +CPDF_TransferFunc* CPDF_RenderStatus::GetTransferFunc(CPDF_Object* pObj) const { + ASSERT(pObj); + CPDF_DocRenderData* pDocCache = m_pContext->GetDocument()->GetRenderData(); + return pDocCache ? pDocCache->GetTransferFunc(pObj) : nullptr; +} + +FX_ARGB CPDF_RenderStatus::GetFillArgb(CPDF_PageObject* pObj, + bool bType3) const { + const CPDF_ColorState* pColorState = &pObj->m_ColorState; + if (m_pType3Char && !bType3 && + (!m_pType3Char->m_bColored || + (m_pType3Char->m_bColored && + (!*pColorState || pColorState->GetFillColor()->IsNull())))) { + return m_T3FillColor; + } + if (!*pColorState || pColorState->GetFillColor()->IsNull()) + pColorState = &m_InitialStates.m_ColorState; + + FX_COLORREF rgb = pColorState->GetFillRGB(); + if (rgb == (uint32_t)-1) + return 0; + + int32_t alpha = + static_cast((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()) + rgb = pObj->m_GeneralState.GetTransferFunc()->TranslateColor(rgb); + } + return m_Options.TranslateColor(ArgbEncode(alpha, rgb)); +} + +FX_ARGB CPDF_RenderStatus::GetStrokeArgb(CPDF_PageObject* pObj) const { + const CPDF_ColorState* pColorState = &pObj->m_ColorState; + if (m_pType3Char && + (!m_pType3Char->m_bColored || + (m_pType3Char->m_bColored && + (!*pColorState || pColorState->GetStrokeColor()->IsNull())))) { + return m_T3FillColor; + } + if (!*pColorState || pColorState->GetStrokeColor()->IsNull()) + pColorState = &m_InitialStates.m_ColorState; + + FX_COLORREF rgb = pColorState->GetStrokeRGB(); + if (rgb == (uint32_t)-1) + return 0; + + int32_t alpha = static_cast(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()) + rgb = pObj->m_GeneralState.GetTransferFunc()->TranslateColor(rgb); + } + return m_Options.TranslateColor(ArgbEncode(alpha, rgb)); +} + +void CPDF_RenderStatus::ProcessClipPath(CPDF_ClipPath ClipPath, + const CFX_Matrix* pObj2Device) { + if (!ClipPath) { + if (m_LastClipPath) { + m_pDevice->RestoreState(true); + m_LastClipPath.SetNull(); + } + return; + } + if (m_LastClipPath == ClipPath) + return; + + m_LastClipPath = ClipPath; + m_pDevice->RestoreState(true); + int nClipPath = ClipPath.GetPathCount(); + for (int i = 0; i < nClipPath; ++i) { + const CFX_PathData* pPathData = ClipPath.GetPath(i).GetObject(); + if (!pPathData) + continue; + + if (pPathData->GetPointCount() == 0) { + CFX_PathData EmptyPath; + EmptyPath.AppendRect(-1, -1, 0, 0); + int fill_mode = FXFILL_WINDING; + m_pDevice->SetClip_PathFill(&EmptyPath, nullptr, fill_mode); + } else { + int ClipType = ClipPath.GetClipType(i); + m_pDevice->SetClip_PathFill(pPathData, pObj2Device, ClipType); + } + } + int textcount = ClipPath.GetTextCount(); + if (textcount == 0) + return; + + if (m_pDevice->GetDeviceClass() == FXDC_DISPLAY && + !(m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_SOFT_CLIP)) { + return; + } + + std::unique_ptr pTextClippingPath; + for (int i = 0; i < textcount; ++i) { + CPDF_TextObject* pText = ClipPath.GetText(i); + if (pText) { + if (!pTextClippingPath) + pTextClippingPath.reset(new CFX_PathData); + ProcessText(pText, pObj2Device, pTextClippingPath.get()); + continue; + } + + if (!pTextClippingPath) + continue; + + int fill_mode = FXFILL_WINDING; + if (m_Options.m_Flags & RENDER_NOTEXTSMOOTH) + fill_mode |= FXFILL_NOPATHSMOOTH; + m_pDevice->SetClip_PathFill(pTextClippingPath.get(), nullptr, fill_mode); + pTextClippingPath.reset(); + } +} + +bool CPDF_RenderStatus::SelectClipPath(const CPDF_PathObject* pPathObj, + const CFX_Matrix* pObj2Device, + bool bStroke) { + CFX_Matrix path_matrix = pPathObj->m_Matrix; + path_matrix.Concat(*pObj2Device); + if (bStroke) { + CFX_GraphState graphState = pPathObj->m_GraphState; + if (m_Options.m_Flags & RENDER_THINLINE) + graphState.SetLineWidth(0); + return m_pDevice->SetClip_PathStroke(pPathObj->m_Path.GetObject(), + &path_matrix, graphState.GetObject()); + } + int fill_mode = pPathObj->m_FillType; + if (m_Options.m_Flags & RENDER_NOPATHSMOOTH) { + fill_mode |= FXFILL_NOPATHSMOOTH; + } + return m_pDevice->SetClip_PathFill(pPathObj->m_Path.GetObject(), &path_matrix, + fill_mode); +} + +bool CPDF_RenderStatus::ProcessTransparency(CPDF_PageObject* pPageObj, + const CFX_Matrix* pObj2Device) { +#if defined _SKIA_SUPPORT_ + DebugVerifyDeviceIsPreMultiplied(); +#endif + int blend_type = pPageObj->m_GeneralState.GetBlendType(); + if (blend_type == FXDIB_BLEND_UNSUPPORTED) + return true; + + CPDF_Dictionary* pSMaskDict = + ToDictionary(pPageObj->m_GeneralState.GetSoftMask()); + if (pSMaskDict) { + if (pPageObj->IsImage() && + pPageObj->AsImage()->GetImage()->GetDict()->KeyExist("SMask")) { + pSMaskDict = nullptr; + } + } + CPDF_Dictionary* pFormResource = nullptr; + FX_FLOAT group_alpha = 1.0f; + int Transparency = m_Transparency; + bool bGroupTransparent = false; + if (pPageObj->IsForm()) { + const CPDF_FormObject* pFormObj = pPageObj->AsForm(); + group_alpha = pFormObj->m_GeneralState.GetFillAlpha(); + Transparency = pFormObj->m_pForm->m_Transparency; + bGroupTransparent = !!(Transparency & PDFTRANS_ISOLATED); + if (pFormObj->m_pForm->m_pFormDict) { + pFormResource = pFormObj->m_pForm->m_pFormDict->GetDictFor("Resources"); + } + } + bool bTextClip = + (pPageObj->m_ClipPath && pPageObj->m_ClipPath.GetTextCount() && + m_pDevice->GetDeviceClass() == FXDC_DISPLAY && + !(m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_SOFT_CLIP)); + if ((m_Options.m_Flags & RENDER_OVERPRINT) && 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->m_pDocument; + } else { + pDocument = pPageObj->AsImage()->GetImage()->GetDocument(); + } + CPDF_Dictionary* pPageResources = pPage ? pPage->m_pPageResources : nullptr; + CPDF_Object* pCSObj = pPageObj->AsImage() + ->GetImage() + ->GetStream() + ->GetDict() + ->GetDirectObjectFor("ColorSpace"); + 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 = FXDIB_BLEND_DARKEN; + } + pDocument->GetPageData()->ReleaseColorSpace(pCSObj); + } + } + if (!pSMaskDict && group_alpha == 1.0f && blend_type == FXDIB_BLEND_NORMAL && + !bTextClip && !bGroupTransparent) { + return false; + } + bool isolated = !!(Transparency & PDFTRANS_ISOLATED); + if (m_bPrint) { + bool bRet = false; + int rendCaps = m_pDevice->GetRenderCaps(); + if (!((Transparency & PDFTRANS_ISOLATED) || pSMaskDict || bTextClip) && + (rendCaps & FXRC_BLEND_MODE)) { + int oldBlend = m_curBlend; + m_curBlend = blend_type; + bRet = DrawObjWithBlend(pPageObj, pObj2Device); + m_curBlend = oldBlend; + } + if (!bRet) { + DrawObjWithBackground(pPageObj, pObj2Device); + } + return true; + } + FX_RECT rect = pPageObj->GetBBox(pObj2Device); + rect.Intersect(m_pDevice->GetClipBox()); + if (rect.IsEmpty()) { + return true; + } + CFX_Matrix deviceCTM = m_pDevice->GetCTM(); + FX_FLOAT scaleX = FXSYS_fabs(deviceCTM.a); + FX_FLOAT scaleY = FXSYS_fabs(deviceCTM.d); + int width = FXSYS_round((FX_FLOAT)rect.Width() * scaleX); + int height = FXSYS_round((FX_FLOAT)rect.Height() * scaleY); + CFX_FxgeDevice bitmap_device; + std::unique_ptr oriDevice; + if (!isolated && (m_pDevice->GetRenderCaps() & FXRC_GET_BITS)) { + oriDevice.reset(new CFX_DIBitmap); + if (!m_pDevice->CreateCompatibleBitmap(oriDevice.get(), width, height)) + return true; + m_pDevice->GetDIBits(oriDevice.get(), rect.left, rect.top); + } + if (!bitmap_device.Create(width, height, FXDIB_Argb, oriDevice.get())) + return true; + CFX_DIBitmap* bitmap = bitmap_device.GetBitmap(); + bitmap->Clear(0); + CFX_Matrix new_matrix = *pObj2Device; + new_matrix.TranslateI(-rect.left, -rect.top); + new_matrix.Scale(scaleX, scaleY); + std::unique_ptr pTextMask; + if (bTextClip) { + pTextMask.reset(new CFX_DIBitmap); + if (!pTextMask->Create(width, height, FXDIB_8bppMask)) + return true; + + pTextMask->Clear(0); + CFX_FxgeDevice text_device; + text_device.Attach(pTextMask.get(), false, nullptr, false); + for (uint32_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(&text_matrix); + CPDF_TextRenderer::DrawTextPath( + &text_device, textobj->m_nChars, textobj->m_pCharCodes, + textobj->m_pCharPos, 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; + bitmap_render.Initialize(m_pContext, &bitmap_device, nullptr, m_pStopObj, + nullptr, nullptr, &m_Options, 0, m_bDropObjects, + pFormResource, true); + bitmap_render.ProcessObjectNoClip(pPageObj, &new_matrix); + m_bStopped = bitmap_render.m_bStopped; + if (pSMaskDict) { + CFX_Matrix smask_matrix = *pPageObj->m_GeneralState.GetSMaskMatrix(); + smask_matrix.Concat(*pObj2Device); + std::unique_ptr pSMaskSource( + LoadSMask(pSMaskDict, &rect, &smask_matrix)); + if (pSMaskSource) + bitmap->MultiplyAlpha(pSMaskSource.get()); + } + if (pTextMask) { + bitmap->MultiplyAlpha(pTextMask.get()); + pTextMask.reset(); + } + int32_t blitAlpha = 255; + if (Transparency & PDFTRANS_GROUP && group_alpha != 1.0f) { + blitAlpha = (int32_t)(group_alpha * 255); +#ifndef _SKIA_SUPPORT_ + bitmap->MultiplyAlpha(blitAlpha); + blitAlpha = 255; +#endif + } + Transparency = m_Transparency; + if (pPageObj->IsForm()) { + Transparency |= PDFTRANS_GROUP; + } + CompositeDIBitmap(bitmap, rect.left, rect.top, 0, blitAlpha, blend_type, + Transparency); +#if defined _SKIA_SUPPORT_ + DebugVerifyDeviceIsPreMultiplied(); +#endif + return true; +} + +CFX_DIBitmap* CPDF_RenderStatus::GetBackdrop(const CPDF_PageObject* pObj, + const FX_RECT& rect, + int& left, + int& top, + bool bBackAlphaRequired) { + FX_RECT bbox = rect; + bbox.Intersect(m_pDevice->GetClipBox()); + left = bbox.left; + top = bbox.top; + CFX_Matrix deviceCTM = m_pDevice->GetCTM(); + FX_FLOAT scaleX = FXSYS_fabs(deviceCTM.a); + FX_FLOAT scaleY = FXSYS_fabs(deviceCTM.d); + int width = FXSYS_round(bbox.Width() * scaleX); + int height = FXSYS_round(bbox.Height() * scaleY); + std::unique_ptr pBackdrop(new CFX_DIBitmap); + if (bBackAlphaRequired && !m_bDropObjects) + pBackdrop->Create(width, height, FXDIB_Argb); + else + m_pDevice->CreateCompatibleBitmap(pBackdrop.get(), 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.get(), left, top); + return pBackdrop.release(); + } + + CFX_Matrix FinalMatrix = m_DeviceMatrix; + FinalMatrix.TranslateI(-left, -top); + FinalMatrix.Scale(scaleX, scaleY); + pBackdrop->Clear(pBackdrop->HasAlpha() ? 0 : 0xffffffff); + CFX_FxgeDevice device; + device.Attach(pBackdrop.get(), false, nullptr, false); + m_pContext->Render(&device, pObj, &m_Options, &FinalMatrix); + return pBackdrop.release(); +} + +CPDF_GraphicStates* CPDF_RenderStatus::CloneObjStates( + const CPDF_GraphicStates* pSrcStates, + bool bStroke) { + if (!pSrcStates) + return nullptr; + + CPDF_GraphicStates* pStates = new CPDF_GraphicStates; + pStates->CopyStates(*pSrcStates); + const CPDF_Color* pObjColor = bStroke + ? pSrcStates->m_ColorState.GetStrokeColor() + : pSrcStates->m_ColorState.GetFillColor(); + if (!pObjColor->IsNull()) { + pStates->m_ColorState.SetFillRGB( + bStroke ? pSrcStates->m_ColorState.GetStrokeRGB() + : pSrcStates->m_ColorState.GetFillRGB()); + pStates->m_ColorState.SetStrokeRGB(pStates->m_ColorState.GetFillRGB()); + } + 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* pObj2Device, + CFX_PathData* pClippingPath) { + if (textobj->m_nChars == 0) + 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, pObj2Device); + + 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->GetFace()) + bStroke = true; + else + bFill = true; + break; + case TextRenderingMode::MODE_FILL_STROKE: + case TextRenderingMode::MODE_FILL_STROKE_CLIP: + bFill = true; + if (pFont->GetFace()) + bStroke = true; + break; + case TextRenderingMode::MODE_INVISIBLE: + // Already handled above, but the compiler is not smart enough to + // realize it. Fall through. + ASSERT(false); + 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(&text_matrix); + if (!IsAvailableMatrix(text_matrix)) + return true; + + FX_FLOAT font_size = textobj->m_TextState.GetFontSize(); + if (bPattern) { + DrawTextPathWithPattern(textobj, pObj2Device, pFont, font_size, + &text_matrix, bFill, bStroke); + return true; + } + if (bClip || bStroke) { + const CFX_Matrix* pDeviceMatrix = pObj2Device; + CFX_Matrix device_matrix; + if (bStroke) { + const FX_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.ConcatInverse(ctm); + device_matrix = ctm; + device_matrix.Concat(*pObj2Device); + 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.m_Flags & RENDER_NOTEXTSMOOTH) + flag |= FXFILL_NOPATHSMOOTH; + return CPDF_TextRenderer::DrawTextPath( + m_pDevice, textobj->m_nChars, textobj->m_pCharCodes, + textobj->m_pCharPos, pFont, font_size, &text_matrix, pDeviceMatrix, + textobj->m_GraphState.GetObject(), fill_argb, stroke_argb, + pClippingPath, flag); + } + text_matrix.Concat(*pObj2Device); + return CPDF_TextRenderer::DrawNormalText( + m_pDevice, textobj->m_nChars, textobj->m_pCharCodes, textobj->m_pCharPos, + pFont, font_size, &text_matrix, fill_argb, &m_Options); +} + +CPDF_Type3Cache* CPDF_RenderStatus::GetCachedType3(CPDF_Type3Font* pFont) { + if (!pFont->m_pDocument) { + return nullptr; + } + pFont->m_pDocument->GetPageData()->GetFont(pFont->GetFontDict()); + return pFont->m_pDocument->GetRenderData()->GetCachedType3(pFont); +} + +// TODO(npm): Font fallback for type 3 fonts? (Completely separate code!!) +bool CPDF_RenderStatus::ProcessType3Text(CPDF_TextObject* textobj, + const CFX_Matrix* pObj2Device) { + CPDF_Type3Font* pType3Font = textobj->m_TextState.GetFont()->AsType3Font(); + for (int i = 0; i < m_Type3FontCache.GetSize(); ++i) { + if (m_Type3FontCache.GetAt(i) == pType3Font) + return true; + } + + CFX_Matrix dCTM = m_pDevice->GetCTM(); + FX_FLOAT sa = FXSYS_fabs(dCTM.a); + FX_FLOAT sd = FXSYS_fabs(dCTM.d); + CFX_Matrix text_matrix; + textobj->GetTextMatrix(&text_matrix); + CFX_Matrix char_matrix = pType3Font->GetFontMatrix(); + FX_FLOAT font_size = textobj->m_TextState.GetFontSize(); + char_matrix.Scale(font_size, font_size); + FX_ARGB fill_argb = GetFillArgb(textobj, true); + int fill_alpha = FXARGB_A(fill_argb); + int device_class = m_pDevice->GetDeviceClass(); + std::vector glyphs; + if (device_class == FXDC_DISPLAY) + glyphs.resize(textobj->m_nChars); + else if (fill_alpha < 255) + return false; + + CPDF_RefType3Cache refTypeCache(pType3Font); + uint32_t* pChars = textobj->m_pCharCodes; + if (textobj->m_nChars == 1) + pChars = (uint32_t*)(&textobj->m_pCharCodes); + + for (int iChar = 0; iChar < textobj->m_nChars; iChar++) { + uint32_t charcode = pChars[iChar]; + if (charcode == (uint32_t)-1) + continue; + + CPDF_Type3Char* pType3Char = pType3Font->LoadChar(charcode); + if (!pType3Char) + continue; + + CFX_Matrix matrix = char_matrix; + matrix.e += iChar ? textobj->m_pCharPos[iChar - 1] : 0; + matrix.Concat(text_matrix); + matrix.Concat(*pObj2Device); + if (!pType3Char->LoadBitmap(m_pContext)) { + if (!glyphs.empty()) { + for (int i = 0; i < iChar; i++) { + const FXTEXT_GLYPHPOS& glyph = glyphs[i]; + if (!glyph.m_pGlyph) + continue; + + m_pDevice->SetBitMask(&glyph.m_pGlyph->m_Bitmap, + glyph.m_OriginX + glyph.m_pGlyph->m_Left, + glyph.m_OriginY - glyph.m_pGlyph->m_Top, + fill_argb); + } + glyphs.clear(); + } + CPDF_GraphicStates* pStates = CloneObjStates(textobj, false); + CPDF_RenderOptions Options = m_Options; + Options.m_Flags |= RENDER_FORCE_HALFTONE | RENDER_RECT_AA; + Options.m_Flags &= ~RENDER_FORCE_DOWNSAMPLE; + CPDF_Dictionary* pFormResource = nullptr; + if (pType3Char->m_pForm && pType3Char->m_pForm->m_pFormDict) { + pFormResource = + pType3Char->m_pForm->m_pFormDict->GetDictFor("Resources"); + } + if (fill_alpha == 255) { + CPDF_RenderStatus status; + status.Initialize(m_pContext, m_pDevice, nullptr, nullptr, this, + pStates, &Options, + pType3Char->m_pForm->m_Transparency, m_bDropObjects, + pFormResource, false, pType3Char, fill_argb); + status.m_Type3FontCache.Append(m_Type3FontCache); + status.m_Type3FontCache.Add(pType3Font); + m_pDevice->SaveState(); + status.RenderObjectList(pType3Char->m_pForm.get(), &matrix); + m_pDevice->RestoreState(false); + } else { + CFX_FloatRect rect_f = pType3Char->m_pForm->CalcBoundingBox(); + rect_f.Transform(&matrix); + FX_RECT rect = rect_f.GetOuterRect(); + CFX_FxgeDevice bitmap_device; + if (!bitmap_device.Create((int)(rect.Width() * sa), + (int)(rect.Height() * sd), FXDIB_Argb, + nullptr)) { + return true; + } + bitmap_device.GetBitmap()->Clear(0); + CPDF_RenderStatus status; + status.Initialize(m_pContext, &bitmap_device, nullptr, nullptr, this, + pStates, &Options, + pType3Char->m_pForm->m_Transparency, m_bDropObjects, + pFormResource, false, pType3Char, fill_argb); + status.m_Type3FontCache.Append(m_Type3FontCache); + status.m_Type3FontCache.Add(pType3Font); + matrix.TranslateI(-rect.left, -rect.top); + matrix.Scale(sa, sd); + status.RenderObjectList(pType3Char->m_pForm.get(), &matrix); + m_pDevice->SetDIBits(bitmap_device.GetBitmap(), rect.left, rect.top); + } + delete pStates; + } else if (pType3Char->m_pBitmap) { + if (device_class == FXDC_DISPLAY) { + CPDF_Type3Cache* pCache = GetCachedType3(pType3Font); + refTypeCache.m_dwCount++; + CFX_GlyphBitmap* pBitmap = pCache->LoadGlyph(charcode, &matrix, sa, sd); + if (!pBitmap) + continue; + + int origin_x = FXSYS_round(matrix.e); + int origin_y = FXSYS_round(matrix.f); + if (glyphs.empty()) { + m_pDevice->SetBitMask(&pBitmap->m_Bitmap, origin_x + pBitmap->m_Left, + origin_y - pBitmap->m_Top, fill_argb); + } else { + glyphs[iChar].m_pGlyph = pBitmap; + glyphs[iChar].m_OriginX = origin_x; + glyphs[iChar].m_OriginY = origin_y; + } + } else { + CFX_Matrix image_matrix = pType3Char->m_ImageMatrix; + image_matrix.Concat(matrix); + CPDF_ImageRenderer renderer; + if (renderer.Start(this, pType3Char->m_pBitmap.get(), fill_argb, 255, + &image_matrix, 0, false)) { + renderer.Continue(nullptr); + } + if (!renderer.m_Result) + return false; + } + } + } + + if (glyphs.empty()) + return true; + + FX_RECT rect = FXGE_GetGlyphsBBox(glyphs, 0, sa, sd); + CFX_DIBitmap bitmap; + if (!bitmap.Create(static_cast(rect.Width() * sa), + static_cast(rect.Height() * sd), FXDIB_8bppMask)) { + return true; + } + bitmap.Clear(0); + for (const FXTEXT_GLYPHPOS& glyph : glyphs) { + if (!glyph.m_pGlyph) + continue; + + pdfium::base::CheckedNumeric left = glyph.m_OriginX; + left += glyph.m_pGlyph->m_Left; + left -= rect.left; + left *= sa; + if (!left.IsValid()) + continue; + + pdfium::base::CheckedNumeric top = glyph.m_OriginY; + top -= glyph.m_pGlyph->m_Top; + top -= rect.top; + top *= sd; + if (!top.IsValid()) + continue; + + bitmap.CompositeMask(left.ValueOrDie(), top.ValueOrDie(), + glyph.m_pGlyph->m_Bitmap.GetWidth(), + glyph.m_pGlyph->m_Bitmap.GetHeight(), + &glyph.m_pGlyph->m_Bitmap, fill_argb, 0, 0, + FXDIB_BLEND_NORMAL, nullptr, false, 0, nullptr); + } + m_pDevice->SetBitMask(&bitmap, rect.left, rect.top, fill_argb); + return true; +} + +void CPDF_RenderStatus::DrawTextPathWithPattern(const CPDF_TextObject* textobj, + const CFX_Matrix* pObj2Device, + CPDF_Font* pFont, + FX_FLOAT font_size, + const CFX_Matrix* pTextMatrix, + bool bFill, + bool bStroke) { + if (!bStroke) { + CPDF_PathObject path; + std::vector> pCopy; + pCopy.push_back(std::unique_ptr(textobj->Clone())); + path.m_bStroke = false; + path.m_FillType = FXFILL_WINDING; + path.m_ClipPath.AppendTexts(&pCopy); + path.m_ColorState = textobj->m_ColorState; + path.m_Path.AppendRect(textobj->m_Left, textobj->m_Bottom, textobj->m_Right, + textobj->m_Top); + path.m_Left = textobj->m_Left; + path.m_Bottom = textobj->m_Bottom; + path.m_Right = textobj->m_Right; + path.m_Top = textobj->m_Top; + RenderSingleObject(&path, pObj2Device); + return; + } + CPDF_CharPosList CharPosList; + CharPosList.Load(textobj->m_nChars, textobj->m_pCharCodes, + textobj->m_pCharPos, 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->m_Font + : pFont->m_FontFallbacks[charpos.m_FallbackFontPosition].get(); + 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.Set(charpos.m_AdjustMatrix[0], charpos.m_AdjustMatrix[1], + charpos.m_AdjustMatrix[2], charpos.m_AdjustMatrix[3], 0, 0); + matrix.Concat(font_size, 0, 0, font_size, charpos.m_OriginX, + charpos.m_OriginY); + path.m_Path.Append(pPath, &matrix); + path.m_Matrix = *pTextMatrix; + path.m_bStroke = bStroke; + path.m_FillType = bFill ? FXFILL_WINDING : 0; + path.CalcBoundingBox(); + ProcessPath(&path, pObj2Device); + } +} + +void CPDF_RenderStatus::DrawShading(CPDF_ShadingPattern* pPattern, + CFX_Matrix* pMatrix, + FX_RECT& clip_rect, + int alpha, + bool bAlphaMode) { + const auto& funcs = pPattern->GetFuncs(); + CPDF_Dictionary* pDict = pPattern->GetShadingObject()->GetDict(); + CPDF_ColorSpace* pColorSpace = pPattern->GetCS(); + if (!pColorSpace) + return; + + FX_ARGB background = 0; + if (!pPattern->IsShadingObject() && pDict->KeyExist("Background")) { + CPDF_Array* pBackColor = pDict->GetArrayFor("Background"); + if (pBackColor && + pBackColor->GetCount() >= pColorSpace->CountComponents()) { + CFX_FixedBufGrow comps(pColorSpace->CountComponents()); + for (uint32_t i = 0; i < pColorSpace->CountComponents(); i++) + comps[i] = pBackColor->GetNumberAt(i); + FX_FLOAT R = 0.0f, G = 0.0f, B = 0.0f; + pColorSpace->GetRGB(comps, R, G, B); + background = ArgbEncode(255, (int32_t)(R * 255), (int32_t)(G * 255), + (int32_t)(B * 255)); + } + } + if (pDict->KeyExist("BBox")) { + CFX_FloatRect rect = pDict->GetRectFor("BBox"); + rect.Transform(pMatrix); + clip_rect.Intersect(rect.GetOuterRect()); + } + if (m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_SHADING && + m_pDevice->GetDeviceDriver()->DrawShading(pPattern, pMatrix, clip_rect, + alpha, bAlphaMode)) { + return; + } + CPDF_DeviceBuffer buffer; + buffer.Initialize(m_pContext, m_pDevice, &clip_rect, m_pCurObj, 150); + CFX_Matrix FinalMatrix = *pMatrix; + FinalMatrix.Concat(*buffer.GetMatrix()); + CFX_DIBitmap* pBitmap = buffer.GetBitmap(); + if (!pBitmap->GetBuffer()) + return; + + pBitmap->Clear(background); + int fill_mode = m_Options.m_Flags; + 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 (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 (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 (CPDF_Stream* pStream = ToStream(pPattern->GetShadingObject())) { + DrawCoonPatchMeshes(pPattern->GetShadingType(), pBitmap, &FinalMatrix, + pStream, funcs, pColorSpace, fill_mode, alpha); + } + } break; + } + if (bAlphaMode) + pBitmap->LoadChannel(FXDIB_Red, pBitmap, FXDIB_Alpha); + + if (m_Options.m_ColorMode == RENDER_COLOR_GRAY) + pBitmap->ConvertColorScale(m_Options.m_ForeColor, m_Options.m_BackColor); + buffer.OutputToDevice(); +} + +void CPDF_RenderStatus::DrawShadingPattern(CPDF_ShadingPattern* pattern, + const CPDF_PageObject* pPageObj, + const CFX_Matrix* pObj2Device, + bool bStroke) { + if (!pattern->Load()) + return; + + m_pDevice->SaveState(); + if (pPageObj->IsPath()) { + if (!SelectClipPath(pPageObj->AsPath(), pObj2Device, bStroke)) { + m_pDevice->RestoreState(false); + return; + } + } else if (pPageObj->IsImage()) { + m_pDevice->SetClip_Rect(pPageObj->GetBBox(pObj2Device)); + } else { + return; + } + FX_RECT rect; + if (GetObjectClippedRect(pPageObj, pObj2Device, false, rect)) { + m_pDevice->RestoreState(false); + return; + } + CFX_Matrix matrix = *pattern->pattern_to_form(); + matrix.Concat(*pObj2Device); + GetScaledMatrix(matrix); + int alpha = + FXSYS_round(255 * (bStroke ? pPageObj->m_GeneralState.GetStrokeAlpha() + : pPageObj->m_GeneralState.GetFillAlpha())); + DrawShading(pattern, &matrix, rect, alpha, + m_Options.m_ColorMode == RENDER_COLOR_ALPHA); + m_pDevice->RestoreState(false); +} + +void CPDF_RenderStatus::ProcessShading(const CPDF_ShadingObject* pShadingObj, + const CFX_Matrix* pObj2Device) { + FX_RECT rect = pShadingObj->GetBBox(pObj2Device); + FX_RECT clip_box = m_pDevice->GetClipBox(); + rect.Intersect(clip_box); + if (rect.IsEmpty()) + return; + + CFX_Matrix matrix = pShadingObj->m_Matrix; + matrix.Concat(*pObj2Device); + DrawShading(pShadingObj->m_pShading, &matrix, rect, + FXSYS_round(255 * pShadingObj->m_GeneralState.GetFillAlpha()), + m_Options.m_ColorMode == RENDER_COLOR_ALPHA); +} + +void CPDF_RenderStatus::DrawTilingPattern(CPDF_TilingPattern* pPattern, + CPDF_PageObject* pPageObj, + const CFX_Matrix* pObj2Device, + bool bStroke) { + if (!pPattern->Load()) { + return; + } + m_pDevice->SaveState(); + if (pPageObj->IsPath()) { + if (!SelectClipPath(pPageObj->AsPath(), pObj2Device, bStroke)) { + m_pDevice->RestoreState(false); + return; + } + } else if (pPageObj->IsImage()) { + m_pDevice->SetClip_Rect(pPageObj->GetBBox(pObj2Device)); + } else { + return; + } + FX_RECT clip_box = m_pDevice->GetClipBox(); + if (clip_box.IsEmpty()) { + m_pDevice->RestoreState(false); + return; + } + CFX_Matrix dCTM = m_pDevice->GetCTM(); + FX_FLOAT sa = FXSYS_fabs(dCTM.a); + FX_FLOAT sd = FXSYS_fabs(dCTM.d); + clip_box.right = clip_box.left + (int32_t)FXSYS_ceil(clip_box.Width() * sa); + clip_box.bottom = clip_box.top + (int32_t)FXSYS_ceil(clip_box.Height() * sd); + CFX_Matrix mtPattern2Device = *pPattern->pattern_to_form(); + mtPattern2Device.Concat(*pObj2Device); + GetScaledMatrix(mtPattern2Device); + bool bAligned = false; + if (pPattern->bbox().left == 0 && pPattern->bbox().bottom == 0 && + pPattern->bbox().right == pPattern->x_step() && + pPattern->bbox().top == pPattern->y_step() && + (mtPattern2Device.IsScaled() || mtPattern2Device.Is90Rotated())) { + bAligned = true; + } + CFX_FloatRect cell_bbox = pPattern->bbox(); + mtPattern2Device.TransformRect(cell_bbox); + int width = (int)FXSYS_ceil(cell_bbox.Width()); + int height = (int)FXSYS_ceil(cell_bbox.Height()); + if (width == 0) { + width = 1; + } + if (height == 0) { + height = 1; + } + int min_col, max_col, min_row, max_row; + CFX_Matrix mtDevice2Pattern; + mtDevice2Pattern.SetReverse(mtPattern2Device); + CFX_FloatRect clip_box_p(clip_box); + clip_box_p.Transform(&mtDevice2Pattern); + + min_col = (int)FXSYS_ceil((clip_box_p.left - pPattern->bbox().right) / + pPattern->x_step()); + max_col = (int)FXSYS_floor((clip_box_p.right - pPattern->bbox().left) / + pPattern->x_step()); + min_row = (int)FXSYS_ceil((clip_box_p.bottom - pPattern->bbox().top) / + pPattern->y_step()); + max_row = (int)FXSYS_floor((clip_box_p.top - pPattern->bbox().bottom) / + pPattern->y_step()); + + if (width > clip_box.Width() || height > clip_box.Height() || + width * height > clip_box.Width() * clip_box.Height()) { + CPDF_GraphicStates* pStates = nullptr; + if (!pPattern->colored()) + pStates = CloneObjStates(pPageObj, bStroke); + + CPDF_Dictionary* pFormResource = nullptr; + if (pPattern->form()->m_pFormDict) + pFormResource = pPattern->form()->m_pFormDict->GetDictFor("Resources"); + + for (int col = min_col; col <= max_col; col++) + for (int row = min_row; row <= max_row; row++) { + FX_FLOAT orig_x, orig_y; + orig_x = col * pPattern->x_step(); + orig_y = row * pPattern->y_step(); + mtPattern2Device.Transform(orig_x, orig_y); + CFX_Matrix matrix = *pObj2Device; + matrix.Translate(orig_x - mtPattern2Device.e, + orig_y - mtPattern2Device.f); + m_pDevice->SaveState(); + CPDF_RenderStatus status; + status.Initialize(m_pContext, m_pDevice, nullptr, nullptr, this, + pStates, &m_Options, pPattern->form()->m_Transparency, + m_bDropObjects, pFormResource); + status.RenderObjectList(pPattern->form(), &matrix); + m_pDevice->RestoreState(false); + } + m_pDevice->RestoreState(false); + delete pStates; + 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--; + } + } + FX_FLOAT left_offset = cell_bbox.left - mtPattern2Device.e; + FX_FLOAT top_offset = cell_bbox.bottom - mtPattern2Device.f; + std::unique_ptr pPatternBitmap; + if (width * height < 16) { + std::unique_ptr pEnlargedBitmap = + DrawPatternBitmap(m_pContext->GetDocument(), m_pContext->GetPageCache(), + pPattern, pObj2Device, 8, 8, m_Options.m_Flags); + pPatternBitmap.reset(pEnlargedBitmap->StretchTo(width, height)); + } else { + pPatternBitmap = DrawPatternBitmap( + m_pContext->GetDocument(), m_pContext->GetPageCache(), pPattern, + pObj2Device, width, height, m_Options.m_Flags); + } + if (!pPatternBitmap) { + m_pDevice->RestoreState(false); + return; + } + if (m_Options.m_ColorMode == RENDER_COLOR_GRAY) { + pPatternBitmap->ConvertColorScale(m_Options.m_ForeColor, + m_Options.m_BackColor); + } + FX_ARGB fill_argb = GetFillArgb(pPageObj); + int clip_width = clip_box.right - clip_box.left; + int clip_height = clip_box.bottom - clip_box.top; + CFX_DIBitmap screen; + if (!screen.Create(clip_width, clip_height, FXDIB_Argb)) { + return; + } + screen.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 { + FX_FLOAT orig_x = col * pPattern->x_step(); + FX_FLOAT orig_y = row * pPattern->y_step(); + mtPattern2Device.Transform(orig_x, orig_y); + + pdfium::base::CheckedNumeric safeStartX = + FXSYS_round(orig_x + left_offset); + pdfium::base::CheckedNumeric safeStartY = + FXSYS_round(orig_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*)(screen.GetBuffer() + screen.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()) { + screen.CompositeBitmap(start_x, start_y, width, height, + pPatternBitmap.get(), 0, 0); + } else { + screen.CompositeMask(start_x, start_y, width, height, + pPatternBitmap.get(), fill_argb, 0, 0); + } + } + } + } + CompositeDIBitmap(&screen, clip_box.left, clip_box.top, 0, 255, + FXDIB_BLEND_NORMAL, false); + m_pDevice->RestoreState(false); +} + +void CPDF_RenderStatus::DrawPathWithPattern(CPDF_PathObject* pPathObj, + const CFX_Matrix* pObj2Device, + const CPDF_Color* pColor, + bool bStroke) { + CPDF_Pattern* pattern = pColor->GetPattern(); + if (!pattern) + return; + + if (CPDF_TilingPattern* pTilingPattern = pattern->AsTilingPattern()) + DrawTilingPattern(pTilingPattern, pPathObj, pObj2Device, bStroke); + else if (CPDF_ShadingPattern* pShadingPattern = pattern->AsShadingPattern()) + DrawShadingPattern(pShadingPattern, pPathObj, pObj2Device, bStroke); +} + +void CPDF_RenderStatus::ProcessPathPattern(CPDF_PathObject* pPathObj, + const CFX_Matrix* pObj2Device, + int& filltype, + bool& bStroke) { + if (filltype) { + const CPDF_Color& FillColor = *pPathObj->m_ColorState.GetFillColor(); + if (FillColor.IsPattern()) { + DrawPathWithPattern(pPathObj, pObj2Device, &FillColor, false); + filltype = 0; + } + } + if (bStroke) { + const CPDF_Color& StrokeColor = *pPathObj->m_ColorState.GetStrokeColor(); + if (StrokeColor.IsPattern()) { + DrawPathWithPattern(pPathObj, pObj2Device, &StrokeColor, true); + bStroke = false; + } + } +} + +bool CPDF_RenderStatus::ProcessImage(CPDF_ImageObject* pImageObj, + const CFX_Matrix* pObj2Device) { + CPDF_ImageRenderer render; + if (render.Start(this, pImageObj, pObj2Device, m_bStdCS, m_curBlend)) { + render.Continue(nullptr); + } + return render.m_Result; +} + +void CPDF_RenderStatus::CompositeDIBitmap(CFX_DIBitmap* pDIBitmap, + int left, + int top, + FX_ARGB mask_argb, + int bitmap_alpha, + int blend_mode, + int Transparency) { + if (!pDIBitmap) { + return; + } + if (blend_mode == FXDIB_BLEND_NORMAL) { + if (!pDIBitmap->IsAlphaMask()) { + if (bitmap_alpha < 255) { +#ifdef _SKIA_SUPPORT_ + void* dummy; + CFX_Matrix m(pDIBitmap->GetWidth(), 0, 0, -pDIBitmap->GetHeight(), left, + top + pDIBitmap->GetHeight()); + m_pDevice->StartDIBits(pDIBitmap, bitmap_alpha, 0, &m, 0, 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_argb)[3] = + ((uint8_t*)&fill_argb)[3] * bitmap_alpha / 255; + } + if (m_pDevice->SetBitMask(pDIBitmap, left, top, fill_argb)) { + return; + } + } + } + bool bIsolated = !!(Transparency & PDFTRANS_ISOLATED); + bool bGroup = !!(Transparency & PDFTRANS_GROUP); + bool bBackAlphaRequired = blend_mode && 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 || !bGroup) { + if (pDIBitmap->IsAlphaMask()) { + return; + } + m_pDevice->SetDIBitsWithBlend(pDIBitmap, left, top, blend_mode); + } else { + FX_RECT rect(left, top, left + pDIBitmap->GetWidth(), + top + pDIBitmap->GetHeight()); + rect.Intersect(m_pDevice->GetClipBox()); + CFX_DIBitmap* pClone = nullptr; + bool bClone = false; + if (m_pDevice->GetBackDrop() && m_pDevice->GetBitmap()) { + bClone = true; + pClone = m_pDevice->GetBackDrop()->Clone(&rect); + CFX_DIBitmap* pForeBitmap = m_pDevice->GetBitmap(); + pClone->CompositeBitmap(0, 0, pClone->GetWidth(), pClone->GetHeight(), + pForeBitmap, rect.left, rect.top); + left = left >= 0 ? 0 : left; + top = top >= 0 ? 0 : top; + if (!pDIBitmap->IsAlphaMask()) + pClone->CompositeBitmap(0, 0, pClone->GetWidth(), pClone->GetHeight(), + pDIBitmap, left, top, blend_mode); + else + pClone->CompositeMask(0, 0, pClone->GetWidth(), pClone->GetHeight(), + pDIBitmap, mask_argb, left, top, blend_mode); + } else { + pClone = pDIBitmap; + } + if (m_pDevice->GetBackDrop()) { + m_pDevice->SetDIBits(pClone, rect.left, rect.top); + } else { + if (pDIBitmap->IsAlphaMask()) { + return; + } + m_pDevice->SetDIBitsWithBlend(pDIBitmap, rect.left, rect.top, + blend_mode); + } + if (bClone) { + delete pClone; + } + } + return; + } + int back_left, back_top; + FX_RECT rect(left, top, left + pDIBitmap->GetWidth(), + top + pDIBitmap->GetHeight()); + std::unique_ptr pBackdrop( + GetBackdrop(m_pCurObj, rect, back_left, back_top, + blend_mode > FXDIB_BLEND_NORMAL && bIsolated)); + if (!pBackdrop) + return; + + if (!pDIBitmap->IsAlphaMask()) { + pBackdrop->CompositeBitmap(left - back_left, top - back_top, + pDIBitmap->GetWidth(), pDIBitmap->GetHeight(), + pDIBitmap, 0, 0, blend_mode); + } else { + pBackdrop->CompositeMask(left - back_left, top - back_top, + pDIBitmap->GetWidth(), pDIBitmap->GetHeight(), + pDIBitmap, mask_argb, 0, 0, blend_mode); + } + + std::unique_ptr pBackdrop1(new CFX_DIBitmap); + pBackdrop1->Create(pBackdrop->GetWidth(), pBackdrop->GetHeight(), + FXDIB_Rgb32); + pBackdrop1->Clear((uint32_t)-1); + pBackdrop1->CompositeBitmap(0, 0, pBackdrop->GetWidth(), + pBackdrop->GetHeight(), pBackdrop.get(), 0, 0); + pBackdrop = std::move(pBackdrop1); + m_pDevice->SetDIBits(pBackdrop.get(), back_left, back_top); +} + +CFX_DIBitmap* CPDF_RenderStatus::LoadSMask(CPDF_Dictionary* pSMaskDict, + FX_RECT* pClipRect, + const CFX_Matrix* pMatrix) { + if (!pSMaskDict) + return nullptr; + + CPDF_Stream* pGroup = pSMaskDict->GetStreamFor("G"); + if (!pGroup) + return nullptr; + + std::unique_ptr pFunc; + CPDF_Object* pFuncObj = pSMaskDict->GetDirectObjectFor("TR"); + if (pFuncObj && (pFuncObj->IsDictionary() || pFuncObj->IsStream())) + pFunc = CPDF_Function::Load(pFuncObj); + + CFX_Matrix matrix = *pMatrix; + matrix.TranslateI(-pClipRect->left, -pClipRect->top); + + CPDF_Form form(m_pContext->GetDocument(), m_pContext->GetPageResources(), + pGroup); + form.ParseContent(nullptr, nullptr, nullptr); + + CFX_FxgeDevice bitmap_device; + bool bLuminosity = pSMaskDict->GetStringFor("S") != "Alpha"; + int width = pClipRect->right - pClipRect->left; + int height = pClipRect->bottom - pClipRect->top; + FXDIB_Format format; +#if _FXM_PLATFORM_ == _FXM_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 color_space_family = 0; + if (bLuminosity) { + CPDF_Array* pBC = pSMaskDict->GetArrayFor("BC"); + FX_ARGB back_color = 0xff000000; + if (pBC) { + CPDF_Object* pCSObj = nullptr; + CPDF_Dictionary* pDict = pGroup->GetDict(); + if (pDict && pDict->GetDictFor("Group")) { + pCSObj = pDict->GetDictFor("Group")->GetDirectObjectFor("CS"); + } + const CPDF_ColorSpace* pCS = + m_pContext->GetDocument()->LoadColorSpace(pCSObj); + if (pCS) { + // Store Color Space Family to use in CPDF_RenderStatus::Initialize. + color_space_family = pCS->GetFamily(); + + FX_FLOAT R, G, B; + uint32_t comps = 8; + if (pCS->CountComponents() > comps) { + comps = pCS->CountComponents(); + } + CFX_FixedBufGrow float_array(comps); + FX_FLOAT* pFloats = float_array; + FX_SAFE_UINT32 num_floats = comps; + num_floats *= sizeof(FX_FLOAT); + if (!num_floats.IsValid()) { + return nullptr; + } + FXSYS_memset(pFloats, 0, num_floats.ValueOrDie()); + size_t count = pBC->GetCount() > 8 ? 8 : pBC->GetCount(); + for (size_t i = 0; i < count; i++) { + pFloats[i] = pBC->GetNumberAt(i); + } + pCS->GetRGB(pFloats, R, G, B); + back_color = 0xff000000 | ((int32_t)(R * 255) << 16) | + ((int32_t)(G * 255) << 8) | (int32_t)(B * 255); + m_pContext->GetDocument()->GetPageData()->ReleaseColorSpace(pCSObj); + } + } + bitmap.Clear(back_color); + } else { + bitmap.Clear(0); + } + CPDF_Dictionary* pFormResource = nullptr; + if (form.m_pFormDict) { + pFormResource = form.m_pFormDict->GetDictFor("Resources"); + } + CPDF_RenderOptions options; + options.m_ColorMode = bLuminosity ? RENDER_COLOR_NORMAL : RENDER_COLOR_ALPHA; + CPDF_RenderStatus status; + status.Initialize(m_pContext, &bitmap_device, nullptr, nullptr, nullptr, + nullptr, &options, 0, m_bDropObjects, pFormResource, true, + nullptr, 0, color_space_family, bLuminosity); + status.RenderObjectList(&form, &matrix); + std::unique_ptr pMask(new 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 transfers(256); + if (pFunc) { + CFX_FixedBufGrow results(pFunc->CountOutputs()); + for (int i = 0; i < 256; i++) { + FX_FLOAT input = (FX_FLOAT)i / 255.0f; + int nresult; + pFunc->Call(&input, 1, results, 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; + for (int i = 0; i < size; i++) { + dest_buf[i] = transfers[src_buf[i]]; + } + } else { + FXSYS_memcpy(dest_buf, src_buf, dest_pitch * height); + } + return pMask.release(); +} -- cgit v1.2.3