| // 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 "../../../include/fpdfapi/fpdf_render.h" | |
| #include "../../../include/fpdfapi/fpdf_pageobj.h" | |
| #include "../../../include/fxge/fx_ge.h" | |
| #include "../fpdf_page/pageint.h" | |
| #include "render_int.h" | |
| #define SHADING_STEPS 256 | |
| static void _DrawAxialShading(CFX_DIBitmap* pBitmap, CFX_AffineMatrix* pObject2Bitmap, | |
| CPDF_Dictionary* pDict, CPDF_Function** pFuncs, int nFuncs, | |
| CPDF_ColorSpace* pCS, int alpha) | |
| { | |
| ASSERT(pBitmap->GetFormat() == FXDIB_Argb); | |
| CPDF_Array* pCoords = pDict->GetArray(FX_BSTRC("Coords")); | |
| if (pCoords == NULL) { | |
| return; | |
| } | |
| FX_FLOAT start_x = pCoords->GetNumber(0); | |
| FX_FLOAT start_y = pCoords->GetNumber(1); | |
| FX_FLOAT end_x = pCoords->GetNumber(2); | |
| FX_FLOAT end_y = pCoords->GetNumber(3); | |
| FX_FLOAT t_min = 0, t_max = 1.0f; | |
| CPDF_Array* pArray = pDict->GetArray(FX_BSTRC("Domain")); | |
| if (pArray) { | |
| t_min = pArray->GetNumber(0); | |
| t_max = pArray->GetNumber(1); | |
| } | |
| FX_BOOL bStartExtend = FALSE, bEndExtend = FALSE; | |
| pArray = pDict->GetArray(FX_BSTRC("Extend")); | |
| if (pArray) { | |
| bStartExtend = pArray->GetInteger(0); | |
| bEndExtend = pArray->GetInteger(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 = FXSYS_Mul(x_span, x_span) + FXSYS_Mul(y_span, y_span); | |
| CFX_AffineMatrix matrix; | |
| matrix.SetReverse(*pObject2Bitmap); | |
| int total_results = 0; | |
| for (int j = 0; j < nFuncs; j ++) { | |
| if (pFuncs[j]) { | |
| total_results += pFuncs[j]->CountOutputs(); | |
| } | |
| } | |
| if (pCS->CountComponents() > total_results) { | |
| total_results = pCS->CountComponents(); | |
| } | |
| CFX_FixedBufGrow<FX_FLOAT, 16> result_array(total_results); | |
| FX_FLOAT* pResults = result_array; | |
| FXSYS_memset32(pResults, 0, total_results * sizeof(FX_FLOAT)); | |
| FX_DWORD 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 (int j = 0; j < nFuncs; j ++) { | |
| if (pFuncs[j]) { | |
| int nresults = 0; | |
| if (pFuncs[j]->Call(&input, 1, pResults + offset, nresults)) { | |
| offset += nresults; | |
| } | |
| } | |
| } | |
| FX_FLOAT R, G, B; | |
| 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(); | |
| int Bpp = pBitmap->GetBPP() / 8; | |
| for (int row = 0; row < height; row ++) { | |
| FX_DWORD* dib_buf = (FX_DWORD*)(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 = FXSYS_Div(FXSYS_Mul(x - start_x, x_span) + FXSYS_Mul(y - start_y, y_span), axis_len_square); | |
| int index = (FX_INT32)(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]; | |
| } | |
| } | |
| } | |
| static void _DrawRadialShading(CFX_DIBitmap* pBitmap, CFX_AffineMatrix* pObject2Bitmap, | |
| CPDF_Dictionary* pDict, CPDF_Function** pFuncs, int nFuncs, | |
| CPDF_ColorSpace* pCS, int alpha) | |
| { | |
| ASSERT(pBitmap->GetFormat() == FXDIB_Argb); | |
| CPDF_Array* pCoords = pDict->GetArray(FX_BSTRC("Coords")); | |
| if (pCoords == NULL) { | |
| return; | |
| } | |
| FX_FLOAT start_x = pCoords->GetNumber(0); | |
| FX_FLOAT start_y = pCoords->GetNumber(1); | |
| FX_FLOAT start_r = pCoords->GetNumber(2); | |
| FX_FLOAT end_x = pCoords->GetNumber(3); | |
| FX_FLOAT end_y = pCoords->GetNumber(4); | |
| FX_FLOAT end_r = pCoords->GetNumber(5); | |
| CFX_AffineMatrix matrix; | |
| matrix.SetReverse(*pObject2Bitmap); | |
| FX_FLOAT t_min = 0, t_max = 1.0f; | |
| CPDF_Array* pArray = pDict->GetArray(FX_BSTRC("Domain")); | |
| if (pArray) { | |
| t_min = pArray->GetNumber(0); | |
| t_max = pArray->GetNumber(1); | |
| } | |
| FX_BOOL bStartExtend = FALSE, bEndExtend = FALSE; | |
| pArray = pDict->GetArray(FX_BSTRC("Extend")); | |
| if (pArray) { | |
| bStartExtend = pArray->GetInteger(0); | |
| bEndExtend = pArray->GetInteger(1); | |
| } | |
| int total_results = 0; | |
| for (int j = 0; j < nFuncs; j ++) { | |
| if (pFuncs[j]) { | |
| total_results += pFuncs[j]->CountOutputs(); | |
| } | |
| } | |
| if (pCS->CountComponents() > total_results) { | |
| total_results = pCS->CountComponents(); | |
| } | |
| CFX_FixedBufGrow<FX_FLOAT, 16> result_array(total_results); | |
| FX_FLOAT* pResults = result_array; | |
| FXSYS_memset32(pResults, 0, total_results * sizeof(FX_FLOAT)); | |
| FX_DWORD 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 (int j = 0; j < nFuncs; j ++) { | |
| if (pFuncs[j]) { | |
| int nresults; | |
| if (pFuncs[j]->Call(&input, 1, pResults + offset, nresults)) { | |
| offset += nresults; | |
| } | |
| } | |
| } | |
| FX_FLOAT R, G, B; | |
| 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 = FXSYS_Mul(start_x - end_x, start_x - end_x) + | |
| FXSYS_Mul(start_y - end_y, start_y - end_y) - FXSYS_Mul(start_r - end_r, start_r - end_r); | |
| int width = pBitmap->GetWidth(); | |
| int height = pBitmap->GetHeight(); | |
| int pitch = pBitmap->GetPitch(); | |
| int Bpp = pBitmap->GetBPP() / 8; | |
| FX_BOOL bDecreasing = FALSE; | |
| if (start_r > end_r) { | |
| int length = (int)FXSYS_sqrt((FXSYS_Mul(start_x - end_x, start_x - end_x) + FXSYS_Mul(start_y - end_y, start_y - end_y))); | |
| if (length < start_r - end_r) { | |
| bDecreasing = TRUE; | |
| } | |
| } | |
| for (int row = 0; row < height; row ++) { | |
| FX_DWORD* dib_buf = (FX_DWORD*)(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 * (FXSYS_Mul(x - start_x, end_x - start_x) + FXSYS_Mul(y - start_y, end_y - start_y) + | |
| FXSYS_Mul(start_r, end_r - start_r)); | |
| FX_FLOAT c = FXSYS_Mul(x - start_x, x - start_x) + FXSYS_Mul(y - start_y, y - start_y) - | |
| FXSYS_Mul(start_r, start_r); | |
| FX_FLOAT s; | |
| if (a == 0) { | |
| s = FXSYS_Div(-c, b); | |
| } else { | |
| FX_FLOAT b2_4ac = FXSYS_Mul(b, b) - 4 * FXSYS_Mul(a, c); | |
| if (b2_4ac < 0) { | |
| continue; | |
| } | |
| FX_FLOAT root = FXSYS_sqrt(b2_4ac); | |
| FX_FLOAT s1, s2; | |
| if (a > 0) { | |
| s1 = FXSYS_Div(-b - root, 2 * a); | |
| s2 = FXSYS_Div(-b + root, 2 * a); | |
| } else { | |
| s2 = FXSYS_Div(-b - root, 2 * a); | |
| s1 = FXSYS_Div(-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 = (FX_INT32)(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]; | |
| } | |
| } | |
| } | |
| static void _DrawFuncShading(CFX_DIBitmap* pBitmap, CFX_AffineMatrix* pObject2Bitmap, | |
| CPDF_Dictionary* pDict, CPDF_Function** pFuncs, int nFuncs, | |
| CPDF_ColorSpace* pCS, int alpha) | |
| { | |
| ASSERT(pBitmap->GetFormat() == FXDIB_Argb); | |
| CPDF_Array* pDomain = pDict->GetArray(FX_BSTRC("Domain")); | |
| FX_FLOAT xmin = 0, ymin = 0, xmax = 1.0f, ymax = 1.0f; | |
| if (pDomain) { | |
| xmin = pDomain->GetNumber(0); | |
| xmax = pDomain->GetNumber(1); | |
| ymin = pDomain->GetNumber(2); | |
| ymax = pDomain->GetNumber(3); | |
| } | |
| CFX_AffineMatrix mtDomain2Target = pDict->GetMatrix(FX_BSTRC("Matrix")); | |
| CFX_AffineMatrix 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(); | |
| int Bpp = pBitmap->GetBPP() / 8; | |
| int total_results = 0; | |
| for (int j = 0; j < nFuncs; j ++) { | |
| if (pFuncs[j]) { | |
| total_results += pFuncs[j]->CountOutputs(); | |
| } | |
| } | |
| if (pCS->CountComponents() > total_results) { | |
| total_results = pCS->CountComponents(); | |
| } | |
| CFX_FixedBufGrow<FX_FLOAT, 16> result_array(total_results); | |
| FX_FLOAT* pResults = result_array; | |
| FXSYS_memset32(pResults, 0, total_results * sizeof(FX_FLOAT)); | |
| for (int row = 0; row < height; row ++) { | |
| FX_DWORD* dib_buf = (FX_DWORD*)(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 (int j = 0; j < nFuncs; j ++) { | |
| if (pFuncs[j]) { | |
| int nresults; | |
| if (pFuncs[j]->Call(input, 2, pResults + offset, nresults)) { | |
| offset += nresults; | |
| } | |
| } | |
| } | |
| FX_FLOAT R, G, B; | |
| pCS->GetRGB(pResults, R, G, B); | |
| dib_buf[column] = FXARGB_TODIB(FXARGB_MAKE(alpha, (FX_INT32)(R * 255), (FX_INT32)(G * 255), (FX_INT32)(B * 255))); | |
| } | |
| } | |
| } | |
| FX_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 + FXSYS_MulDiv(x2 - x1, y - y1, y2 - y1); | |
| return TRUE; | |
| } | |
| static 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]; | |
| FX_BOOL bIntersect = _GetScanlineIntersect(y, vertex1.x, vertex1.y, | |
| vertex2.x, vertex2.y, inter_x[nIntersects]); | |
| if (!bIntersect) { | |
| continue; | |
| } | |
| r[nIntersects] = vertex1.r + FXSYS_MulDiv(vertex2.r - vertex1.r, y - vertex1.y, vertex2.y - vertex1.y); | |
| g[nIntersects] = vertex1.g + FXSYS_MulDiv(vertex2.g - vertex1.g, y - vertex1.y, vertex2.y - vertex1.y); | |
| b[nIntersects] = vertex1.b + FXSYS_MulDiv(vertex2.b - vertex1.b, y - vertex1.y, vertex2.y - vertex1.y); | |
| 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(); | |
| } | |
| FX_LPBYTE 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, (FX_INT32)(R * 255), (FX_INT32)(G * 255), (FX_INT32)(B * 255))); | |
| dib_buf += 4; | |
| } | |
| } | |
| } | |
| static void _DrawFreeGouraudShading(CFX_DIBitmap* pBitmap, CFX_AffineMatrix* pObject2Bitmap, | |
| CPDF_Stream* pShadingStream, CPDF_Function** pFuncs, int nFuncs, | |
| CPDF_ColorSpace* pCS, int alpha) | |
| { | |
| ASSERT(pBitmap->GetFormat() == FXDIB_Argb); | |
| if (pShadingStream->GetType() != PDFOBJ_STREAM) { | |
| return; | |
| } | |
| CPDF_MeshStream stream; | |
| if (!stream.Load(pShadingStream, pFuncs, nFuncs, pCS)) { | |
| return; | |
| } | |
| CPDF_MeshVertex triangle[3]; | |
| while (!stream.m_BitStream.IsEOF()) { | |
| CPDF_MeshVertex vertex; | |
| FX_DWORD 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); | |
| } | |
| } | |
| static void _DrawLatticeGouraudShading(CFX_DIBitmap* pBitmap, CFX_AffineMatrix* pObject2Bitmap, | |
| CPDF_Stream* pShadingStream, CPDF_Function** pFuncs, int nFuncs, | |
| CPDF_ColorSpace* pCS, int alpha) | |
| { | |
| ASSERT(pBitmap->GetFormat() == FXDIB_Argb); | |
| if (pShadingStream->GetType() != PDFOBJ_STREAM) { | |
| return; | |
| } | |
| int row_verts = pShadingStream->GetDict()->GetInteger("VerticesPerRow"); | |
| if (row_verts < 2) { | |
| return; | |
| } | |
| CPDF_MeshStream stream; | |
| if (!stream.Load(pShadingStream, pFuncs, nFuncs, pCS)) { | |
| return; | |
| } | |
| CPDF_MeshVertex* vertex = FX_Alloc(CPDF_MeshVertex, row_verts * 2); | |
| if (!stream.GetVertexRow(vertex, row_verts, pObject2Bitmap)) { | |
| FX_Free(vertex); | |
| return; | |
| } | |
| int last_index = 0; | |
| while (1) { | |
| CPDF_MeshVertex* last_row = vertex + last_index * row_verts; | |
| CPDF_MeshVertex* this_row = vertex + (1 - last_index) * row_verts; | |
| if (!stream.GetVertexRow(this_row, row_verts, pObject2Bitmap)) { | |
| FX_Free(vertex); | |
| 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; | |
| } | |
| FX_Free(vertex); | |
| } | |
| 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(); | |
| } | |
| }; | |
| static int _BiInterpol(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_memset32(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] = _BiInterpol(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) | |
| { | |
| int max, diff; | |
| max = FXSYS_abs(comp[0] - o.comp[0]); | |
| diff = FXSYS_abs(comp[1] - o.comp[1]); | |
| if (max < diff) { | |
| max = diff; | |
| } | |
| diff = FXSYS_abs(comp[2] - o.comp[2]); | |
| if (max < diff) { | |
| max = diff; | |
| } | |
| return max; | |
| } | |
| }; | |
| 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, d_left, d_top, d_right; | |
| 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, NULL, NULL, 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()); | |
| } | |
| } | |
| } | |
| }; | |
| static void _DrawCoonPatchMeshes(FX_BOOL bTensor, CFX_DIBitmap* pBitmap, CFX_AffineMatrix* pObject2Bitmap, | |
| CPDF_Stream* pShadingStream, CPDF_Function** pFuncs, int nFuncs, | |
| CPDF_ColorSpace* pCS, int fill_mode, int alpha) | |
| { | |
| ASSERT(pBitmap->GetFormat() == FXDIB_Argb); | |
| if (pShadingStream->GetType() != PDFOBJ_STREAM) { | |
| return; | |
| } | |
| CFX_FxgeDevice device; | |
| device.Attach(pBitmap); | |
| CPDF_MeshStream stream; | |
| if (!stream.Load(pShadingStream, pFuncs, nFuncs, pCS)) { | |
| 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_FloatPoint coords[16]; | |
| int point_count = bTensor ? 16 : 12; | |
| while (!stream.m_BitStream.IsEOF()) { | |
| FX_DWORD flag = stream.GetFlag(); | |
| int iStartPoint = 0, iStartColor = 0, i; | |
| if (flag) { | |
| iStartPoint = 4; | |
| iStartColor = 2; | |
| CFX_FloatPoint tempCoords[4]; | |
| for (int i = 0; i < 4; i ++) { | |
| tempCoords[i] = coords[(flag * 3 + i) % 12]; | |
| } | |
| FXSYS_memcpy32(coords, tempCoords, sizeof(CFX_FloatPoint) * 4); | |
| Coon_Color tempColors[2]; | |
| tempColors[0] = patch.patch_colors[flag]; | |
| tempColors[1] = patch.patch_colors[(flag + 1) % 4]; | |
| FXSYS_memcpy32(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, g, b; | |
| stream.GetColor(r, g, b); | |
| patch.patch_colors[i].comp[0] = (FX_INT32)(r * 255); | |
| patch.patch_colors[i].comp[1] = (FX_INT32)(g * 255); | |
| patch.patch_colors[i].comp[2] = (FX_INT32)(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); | |
| } | |
| } | |
| void CPDF_RenderStatus::DrawShading(CPDF_ShadingPattern* pPattern, CFX_AffineMatrix* pMatrix, | |
| FX_RECT& clip_rect, int alpha, FX_BOOL bAlphaMode) | |
| { | |
| int width = clip_rect.Width(); | |
| int height = clip_rect.Height(); | |
| CPDF_Function** pFuncs = pPattern->m_pFunctions; | |
| int nFuncs = pPattern->m_nFuncs; | |
| CPDF_Dictionary* pDict = pPattern->m_pShadingObj->GetDict(); | |
| CPDF_ColorSpace* pColorSpace = pPattern->m_pCS; | |
| if (pColorSpace == NULL) { | |
| return; | |
| } | |
| FX_ARGB background = 0; | |
| if (!pPattern->m_bShadingObj && pPattern->m_pShadingObj->GetDict()->KeyExist(FX_BSTRC("Background"))) { | |
| CPDF_Array* pBackColor = pPattern->m_pShadingObj->GetDict()->GetArray(FX_BSTRC("Background")); | |
| if (pBackColor && pBackColor->GetCount() >= (FX_DWORD)pColorSpace->CountComponents()) { | |
| CFX_FixedBufGrow<FX_FLOAT, 16> comps(pColorSpace->CountComponents()); | |
| for (int i = 0; i < pColorSpace->CountComponents(); i ++) { | |
| comps[i] = pBackColor->GetNumber(i); | |
| } | |
| FX_FLOAT R, G, B; | |
| pColorSpace->GetRGB(comps, R, G, B); | |
| background = ArgbEncode(255, (FX_INT32)(R * 255), (FX_INT32)(G * 255), (FX_INT32)(B * 255)); | |
| } | |
| } | |
| if (pDict->KeyExist(FX_BSTRC("BBox"))) { | |
| CFX_FloatRect rect = pDict->GetRect(FX_BSTRC("BBox")); | |
| rect.Transform(pMatrix); | |
| clip_rect.Intersect(rect.GetOutterRect()); | |
| } | |
| CPDF_DeviceBuffer buffer; | |
| buffer.Initialize(m_pContext, m_pDevice, &clip_rect, m_pCurObj, 150); | |
| CFX_AffineMatrix FinalMatrix = *pMatrix; | |
| FinalMatrix.Concat(*buffer.GetMatrix()); | |
| CFX_DIBitmap* pBitmap = buffer.GetBitmap(); | |
| if (pBitmap->GetBuffer() == NULL) { | |
| return; | |
| } | |
| pBitmap->Clear(background); | |
| int fill_mode = m_Options.m_Flags; | |
| switch (pPattern->m_ShadingType) { | |
| case 1: | |
| _DrawFuncShading(pBitmap, &FinalMatrix, pDict, pFuncs, nFuncs, pColorSpace, alpha); | |
| break; | |
| case 2: | |
| _DrawAxialShading(pBitmap, &FinalMatrix, pDict, pFuncs, nFuncs, pColorSpace, alpha); | |
| break; | |
| case 3: | |
| _DrawRadialShading(pBitmap, &FinalMatrix, pDict, pFuncs, nFuncs, pColorSpace, alpha); | |
| break; | |
| case 4: { | |
| _DrawFreeGouraudShading(pBitmap, &FinalMatrix, (CPDF_Stream*)pPattern->m_pShadingObj, | |
| pFuncs, nFuncs, pColorSpace, alpha); | |
| } | |
| break; | |
| case 5: { | |
| _DrawLatticeGouraudShading(pBitmap, &FinalMatrix, (CPDF_Stream*)pPattern->m_pShadingObj, | |
| pFuncs, nFuncs, pColorSpace, alpha); | |
| } | |
| break; | |
| case 6: | |
| case 7: { | |
| _DrawCoonPatchMeshes(pPattern->m_ShadingType - 6, pBitmap, &FinalMatrix, (CPDF_Stream*)pPattern->m_pShadingObj, | |
| pFuncs, nFuncs, 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, CPDF_PageObject* pPageObj, const CFX_AffineMatrix* pObj2Device, FX_BOOL bStroke) | |
| { | |
| if (!pattern->Load()) { | |
| return; | |
| } | |
| m_pDevice->SaveState(); | |
| if (pPageObj->m_Type == PDFPAGE_PATH) { | |
| if (!SelectClipPath((CPDF_PathObject*)pPageObj, pObj2Device, bStroke)) { | |
| m_pDevice->RestoreState(); | |
| return; | |
| } | |
| } else if (pPageObj->m_Type == PDFPAGE_IMAGE) { | |
| FX_RECT rect = pPageObj->GetBBox(pObj2Device); | |
| m_pDevice->SetClip_Rect(&rect); | |
| } else { | |
| return; | |
| } | |
| FX_RECT rect; | |
| if (GetObjectClippedRect(pPageObj, pObj2Device, FALSE, rect)) { | |
| m_pDevice->RestoreState(); | |
| return; | |
| } | |
| CFX_AffineMatrix matrix = pattern->m_Pattern2Form; | |
| 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(); | |
| } | |
| FX_BOOL CPDF_RenderStatus::ProcessShading(CPDF_ShadingObject* pShadingObj, const CFX_AffineMatrix* pObj2Device) | |
| { | |
| FX_RECT rect = pShadingObj->GetBBox(pObj2Device); | |
| FX_RECT clip_box = m_pDevice->GetClipBox(); | |
| rect.Intersect(clip_box); | |
| if (rect.IsEmpty()) { | |
| return TRUE; | |
| } | |
| CFX_AffineMatrix 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); | |
| #ifdef _FPDFAPI_MINI_ | |
| if (m_DitherBits) { | |
| DitherObjectArea(pShadingObj, pObj2Device); | |
| } | |
| #endif | |
| return TRUE; | |
| } | |
| static CFX_DIBitmap* DrawPatternBitmap(CPDF_Document* pDoc, CPDF_PageRenderCache* pCache, | |
| CPDF_TilingPattern* pPattern, const CFX_AffineMatrix* pObject2Device, | |
| int width, int height, int flags) | |
| { | |
| CFX_DIBitmap* pBitmap = FX_NEW CFX_DIBitmap; | |
| if (!pBitmap->Create(width, height, pPattern->m_bColored ? FXDIB_Argb : FXDIB_8bppMask)) { | |
| delete pBitmap; | |
| return NULL; | |
| } | |
| CFX_FxgeDevice bitmap_device; | |
| bitmap_device.Attach(pBitmap); | |
| pBitmap->Clear(0); | |
| CFX_FloatRect cell_bbox = pPattern->m_BBox; | |
| pPattern->m_Pattern2Form.TransformRect(cell_bbox); | |
| pObject2Device->TransformRect(cell_bbox); | |
| CFX_FloatRect bitmap_rect(0.0f, 0.0f, (FX_FLOAT)width, (FX_FLOAT)height); | |
| CFX_AffineMatrix mtAdjust; | |
| mtAdjust.MatchRect(bitmap_rect, cell_bbox); | |
| CFX_AffineMatrix mtPattern2Bitmap = *pObject2Device; | |
| mtPattern2Bitmap.Concat(mtAdjust); | |
| CPDF_RenderOptions options; | |
| if (!pPattern->m_bColored) { | |
| options.m_ColorMode = RENDER_COLOR_ALPHA; | |
| } | |
| flags |= RENDER_FORCE_HALFTONE; | |
| options.m_Flags = flags; | |
| CPDF_RenderContext context; | |
| context.Create(pDoc, pCache, NULL); | |
| context.DrawObjectList(&bitmap_device, pPattern->m_pForm, &mtPattern2Bitmap, &options); | |
| return pBitmap; | |
| } | |
| void CPDF_RenderStatus::DrawTilingPattern(CPDF_TilingPattern* pPattern, CPDF_PageObject* pPageObj, const CFX_AffineMatrix* pObj2Device, FX_BOOL bStroke) | |
| { | |
| if (!pPattern->Load()) { | |
| return; | |
| } | |
| m_pDevice->SaveState(); | |
| if (pPageObj->m_Type == PDFPAGE_PATH) { | |
| if (!SelectClipPath((CPDF_PathObject*)pPageObj, pObj2Device, bStroke)) { | |
| m_pDevice->RestoreState(); | |
| return; | |
| } | |
| } else if (pPageObj->m_Type == PDFPAGE_IMAGE) { | |
| FX_RECT rect = pPageObj->GetBBox(pObj2Device); | |
| m_pDevice->SetClip_Rect(&rect); | |
| } else { | |
| return; | |
| } | |
| FX_RECT clip_box = m_pDevice->GetClipBox(); | |
| if (clip_box.IsEmpty()) { | |
| m_pDevice->RestoreState(); | |
| 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 + (FX_INT32)FXSYS_ceil(clip_box.Width() * sa); | |
| clip_box.bottom = clip_box.top + (FX_INT32)FXSYS_ceil(clip_box.Height() * sd); | |
| CFX_AffineMatrix mtPattern2Device = pPattern->m_Pattern2Form; | |
| mtPattern2Device.Concat(*pObj2Device); | |
| GetScaledMatrix(mtPattern2Device); | |
| FX_BOOL bAligned = FALSE; | |
| if (pPattern->m_BBox.left == 0 && pPattern->m_BBox.bottom == 0 && | |
| pPattern->m_BBox.right == pPattern->m_XStep && pPattern->m_BBox.top == pPattern->m_YStep && | |
| (mtPattern2Device.IsScaled() || mtPattern2Device.Is90Rotated())) { | |
| bAligned = TRUE; | |
| } | |
| CFX_FloatRect cell_bbox = pPattern->m_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_AffineMatrix mtDevice2Pattern; | |
| mtDevice2Pattern.SetReverse(mtPattern2Device); | |
| CFX_FloatRect clip_box_p(clip_box); | |
| clip_box_p.Transform(&mtDevice2Pattern); | |
| min_col = (int)FXSYS_ceil(FXSYS_Div(clip_box_p.left - pPattern->m_BBox.right, pPattern->m_XStep)); | |
| max_col = (int)FXSYS_floor(FXSYS_Div(clip_box_p.right - pPattern->m_BBox.left, pPattern->m_XStep)); | |
| min_row = (int)FXSYS_ceil(FXSYS_Div(clip_box_p.bottom - pPattern->m_BBox.top, pPattern->m_YStep)); | |
| max_row = (int)FXSYS_floor(FXSYS_Div(clip_box_p.top - pPattern->m_BBox.bottom, pPattern->m_YStep)); | |
| if (width > clip_box.Width() || height > clip_box.Height() || width * height > clip_box.Width() * clip_box.Height()) { | |
| CPDF_GraphicStates* pStates = NULL; | |
| if (!pPattern->m_bColored) { | |
| pStates = CloneObjStates(pPageObj, bStroke); | |
| } | |
| CPDF_Dictionary* pFormResource = NULL; | |
| if (pPattern->m_pForm->m_pFormDict) { | |
| pFormResource = pPattern->m_pForm->m_pFormDict->GetDict(FX_BSTRC("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->m_XStep; | |
| orig_y = row * pPattern->m_YStep; | |
| mtPattern2Device.Transform(orig_x, orig_y); | |
| CFX_AffineMatrix matrix = *pObj2Device; | |
| matrix.Translate(orig_x - mtPattern2Device.e, orig_y - mtPattern2Device.f); | |
| m_pDevice->SaveState(); | |
| CPDF_RenderStatus status; | |
| status.Initialize(m_Level + 1, m_pContext, m_pDevice, NULL, NULL, this, pStates, &m_Options, | |
| pPattern->m_pForm->m_Transparency, m_bDropObjects, pFormResource); | |
| status.RenderObjectList(pPattern->m_pForm, &matrix); | |
| m_pDevice->RestoreState(); | |
| } | |
| m_pDevice->RestoreState(); | |
| if (pStates) { | |
| 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; | |
| CFX_DIBitmap* pPatternBitmap = NULL; | |
| if (width * height < 16) { | |
| CFX_DIBitmap* pEnlargedBitmap = DrawPatternBitmap(m_pContext->m_pDocument, m_pContext->m_pPageCache, pPattern, pObj2Device, 8, 8, m_Options.m_Flags); | |
| pPatternBitmap = pEnlargedBitmap->StretchTo(width, height); | |
| delete pEnlargedBitmap; | |
| } else { | |
| pPatternBitmap = DrawPatternBitmap(m_pContext->m_pDocument, m_pContext->m_pPageCache, pPattern, pObj2Device, width, height, m_Options.m_Flags); | |
| } | |
| if (pPatternBitmap == NULL) { | |
| m_pDevice->RestoreState(); | |
| 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); | |
| FX_DWORD* src_buf = (FX_DWORD*)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->m_XStep; | |
| FX_FLOAT orig_y = row * pPattern->m_YStep; | |
| 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; | |
| } | |
| FX_DWORD* dest_buf = (FX_DWORD*)(screen.GetBuffer() + screen.GetPitch() * start_y + start_x * 4); | |
| if (pPattern->m_bColored) { | |
| *dest_buf = *src_buf; | |
| } else { | |
| *dest_buf = (*(FX_LPBYTE)src_buf << 24) | (fill_argb & 0xffffff); | |
| } | |
| } else { | |
| if (pPattern->m_bColored) { | |
| screen.CompositeBitmap(start_x, start_y, width, height, pPatternBitmap, 0, 0); | |
| } else { | |
| screen.CompositeMask(start_x, start_y, width, height, pPatternBitmap, fill_argb, 0, 0); | |
| } | |
| } | |
| } | |
| } | |
| CompositeDIBitmap(&screen, clip_box.left, clip_box.top, 0, 255, FXDIB_BLEND_NORMAL, FALSE); | |
| m_pDevice->RestoreState(); | |
| delete pPatternBitmap; | |
| } | |
| void CPDF_RenderStatus::DrawPathWithPattern(CPDF_PathObject* pPathObj, const CFX_AffineMatrix* pObj2Device, CPDF_Color* pColor, FX_BOOL bStroke) | |
| { | |
| CPDF_Pattern* pattern = pColor->GetPattern(); | |
| if (pattern == NULL) { | |
| return; | |
| } | |
| if(pattern->m_PatternType == PATTERN_TILING) { | |
| DrawTilingPattern((CPDF_TilingPattern*)pattern, pPathObj, pObj2Device, bStroke); | |
| } else { | |
| DrawShadingPattern((CPDF_ShadingPattern*)pattern, pPathObj, pObj2Device, bStroke); | |
| } | |
| } | |
| void CPDF_RenderStatus::ProcessPathPattern(CPDF_PathObject* pPathObj, const CFX_AffineMatrix* pObj2Device, int& filltype, FX_BOOL& bStroke) | |
| { | |
| FX_BOOL bPattern = FALSE; | |
| if(filltype) { | |
| CPDF_Color& FillColor = *pPathObj->m_ColorState.GetFillColor(); | |
| if(FillColor.m_pCS && FillColor.m_pCS->GetFamily() == PDFCS_PATTERN) { | |
| DrawPathWithPattern(pPathObj, pObj2Device, &FillColor, FALSE); | |
| filltype = 0; | |
| bPattern = TRUE; | |
| } | |
| } | |
| if(bStroke) { | |
| CPDF_Color& StrokeColor = *pPathObj->m_ColorState.GetStrokeColor(); | |
| if(StrokeColor.m_pCS && StrokeColor.m_pCS->GetFamily() == PDFCS_PATTERN) { | |
| DrawPathWithPattern(pPathObj, pObj2Device, &StrokeColor, TRUE); | |
| bStroke = FALSE; | |
| bPattern = TRUE; | |
| } | |
| } | |
| #ifdef _FPDFAPI_MINI_ | |
| if (bPattern && m_DitherBits) { | |
| DitherObjectArea(pPathObj, pObj2Device); | |
| } | |
| #endif | |
| } |