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-rw-r--r--core/src/fpdfapi/fpdf_render/fpdf_render_pattern.cpp2186
1 files changed, 1093 insertions, 1093 deletions
diff --git a/core/src/fpdfapi/fpdf_render/fpdf_render_pattern.cpp b/core/src/fpdfapi/fpdf_render/fpdf_render_pattern.cpp
index 8cc30a72a1..4b4f929179 100644
--- a/core/src/fpdfapi/fpdf_render/fpdf_render_pattern.cpp
+++ b/core/src/fpdfapi/fpdf_render/fpdf_render_pattern.cpp
@@ -1,1093 +1,1093 @@
-// 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
-}
+// 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
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-01 15:35:46 +0000