| // Copyright 2014 PDFium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
| |
| #include "core/fpdfapi/fpdf_render/render_int.h" |
| |
| #include <algorithm> |
| |
| #include "core/fpdfapi/fpdf_page/cpdf_graphicstates.h" |
| #include "core/fpdfapi/fpdf_page/cpdf_meshstream.h" |
| #include "core/fpdfapi/fpdf_page/cpdf_shadingpattern.h" |
| #include "core/fpdfapi/fpdf_page/cpdf_tilingpattern.h" |
| #include "core/fpdfapi/fpdf_page/include/cpdf_form.h" |
| #include "core/fpdfapi/fpdf_page/include/cpdf_pageobject.h" |
| #include "core/fpdfapi/fpdf_page/include/cpdf_pathobject.h" |
| #include "core/fpdfapi/fpdf_page/include/cpdf_shadingobject.h" |
| #include "core/fpdfapi/fpdf_page/pageint.h" |
| #include "core/fpdfapi/fpdf_parser/include/cpdf_array.h" |
| #include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h" |
| #include "core/fpdfapi/fpdf_render/include/cpdf_rendercontext.h" |
| #include "core/fpdfapi/fpdf_render/include/cpdf_renderoptions.h" |
| #include "core/fxge/include/ifx_renderdevicedriver.h" |
| |
| namespace { |
| |
| uint32_t CountOutputs( |
| const std::vector<std::unique_ptr<CPDF_Function>>& funcs) { |
| uint32_t total = 0; |
| for (const auto& func : funcs) { |
| if (func) |
| total += func->CountOutputs(); |
| } |
| return total; |
| } |
| |
| #define SHADING_STEPS 256 |
| void DrawAxialShading(CFX_DIBitmap* pBitmap, |
| CFX_Matrix* pObject2Bitmap, |
| CPDF_Dictionary* pDict, |
| const std::vector<std::unique_ptr<CPDF_Function>>& funcs, |
| CPDF_ColorSpace* pCS, |
| int alpha) { |
| ASSERT(pBitmap->GetFormat() == FXDIB_Argb); |
| CPDF_Array* pCoords = pDict->GetArrayBy("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, t_max = 1.0f; |
| CPDF_Array* pArray = pDict->GetArrayBy("Domain"); |
| if (pArray) { |
| t_min = pArray->GetNumberAt(0); |
| t_max = pArray->GetNumberAt(1); |
| } |
| FX_BOOL bStartExtend = FALSE, bEndExtend = FALSE; |
| pArray = pDict->GetArrayBy("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<FX_FLOAT, 16> 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<std::unique_ptr<CPDF_Function>>& funcs, |
| CPDF_ColorSpace* pCS, |
| int alpha) { |
| ASSERT(pBitmap->GetFormat() == FXDIB_Argb); |
| CPDF_Array* pCoords = pDict->GetArrayBy("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, t_max = 1.0f; |
| CPDF_Array* pArray = pDict->GetArrayBy("Domain"); |
| if (pArray) { |
| t_min = pArray->GetNumberAt(0); |
| t_max = pArray->GetNumberAt(1); |
| } |
| FX_BOOL bStartExtend = FALSE, bEndExtend = FALSE; |
| pArray = pDict->GetArrayBy("Extend"); |
| if (pArray) { |
| bStartExtend = pArray->GetIntegerAt(0); |
| bEndExtend = pArray->GetIntegerAt(1); |
| } |
| uint32_t total_results = |
| std::max(CountOutputs(funcs), pCS->CountComponents()); |
| CFX_FixedBufGrow<FX_FLOAT, 16> 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(); |
| FX_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<std::unique_ptr<CPDF_Function>>& funcs, |
| CPDF_ColorSpace* pCS, |
| int alpha) { |
| ASSERT(pBitmap->GetFormat() == FXDIB_Argb); |
| CPDF_Array* pDomain = pDict->GetArrayBy("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->GetMatrixBy("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<FX_FLOAT, 16> 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<std::unique_ptr<CPDF_Function>>& 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<std::unique_ptr<CPDF_Function>>& funcs, |
| CPDF_ColorSpace* pCS, |
| int alpha) { |
| ASSERT(pBitmap->GetFormat() == FXDIB_Argb); |
| |
| int row_verts = pShadingStream->GetDict()->GetIntegerBy("VerticesPerRow"); |
| if (row_verts < 2) |
| return; |
| |
| CPDF_MeshStream stream(kLatticeFormGouraudTriangleMeshShading, funcs, |
| pShadingStream, pCS); |
| if (!stream.Load()) |
| return; |
| |
| std::unique_ptr<CPDF_MeshVertex, FxFreeDeleter> 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) { |
| FX_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<std::unique_ptr<CPDF_Function>>& 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<CFX_DIBitmap> DrawPatternBitmap( |
| CPDF_Document* pDoc, |
| CPDF_PageRenderCache* pCache, |
| CPDF_TilingPattern* pPattern, |
| const CFX_Matrix* pObject2Device, |
| int width, |
| int height, |
| int flags) { |
| std::unique_ptr<CFX_DIBitmap> pBitmap(new CFX_DIBitmap); |
| if (!pBitmap->Create(width, height, |
| pPattern->colored() ? FXDIB_Argb : FXDIB_8bppMask)) { |
| return std::unique_ptr<CFX_DIBitmap>(); |
| } |
| 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 |
| |
| void CPDF_RenderStatus::DrawShading(CPDF_ShadingPattern* pPattern, |
| CFX_Matrix* pMatrix, |
| FX_RECT& clip_rect, |
| int alpha, |
| FX_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->GetArrayBy("Background"); |
| if (pBackColor && |
| pBackColor->GetCount() >= pColorSpace->CountComponents()) { |
| CFX_FixedBufGrow<FX_FLOAT, 16> 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->GetRectBy("BBox"); |
| rect.Transform(pMatrix); |
| clip_rect.Intersect(rect.GetOutterRect()); |
| } |
| 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, |
| FX_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 = pPageObj->m_GeneralState.GetAlpha(bStroke); |
| 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, |
| pShadingObj->m_GeneralState.GetAlpha(FALSE), |
| m_Options.m_ColorMode == RENDER_COLOR_ALPHA); |
| } |
| |
| void CPDF_RenderStatus::DrawTilingPattern(CPDF_TilingPattern* pPattern, |
| const CPDF_PageObject* pPageObj, |
| const CFX_Matrix* pObj2Device, |
| FX_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); |
| FX_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->GetDictBy("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<CFX_DIBitmap> pPatternBitmap; |
| if (width * height < 16) { |
| std::unique_ptr<CFX_DIBitmap> 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); |
| start_x = FXSYS_round(orig_x + left_offset) - clip_box.left; |
| start_y = FXSYS_round(orig_y + top_offset) - clip_box.top; |
| } |
| 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(const CPDF_PathObject* pPathObj, |
| const CFX_Matrix* pObj2Device, |
| CPDF_Color* pColor, |
| FX_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(const CPDF_PathObject* pPathObj, |
| const CFX_Matrix* pObj2Device, |
| int& filltype, |
| FX_BOOL& bStroke) { |
| if (filltype) { |
| CPDF_Color& FillColor = *pPathObj->m_ColorState.GetFillColor(); |
| if (FillColor.IsPattern()) { |
| DrawPathWithPattern(pPathObj, pObj2Device, &FillColor, FALSE); |
| filltype = 0; |
| } |
| } |
| if (bStroke) { |
| CPDF_Color& StrokeColor = *pPathObj->m_ColorState.GetStrokeColor(); |
| if (StrokeColor.IsPattern()) { |
| DrawPathWithPattern(pPathObj, pObj2Device, &StrokeColor, TRUE); |
| bStroke = FALSE; |
| } |
| } |
| } |
