| // Copyright 2014 PDFium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
| |
| #include "core/fxcrt/include/fx_system.h" |
| #include "core/fxge/include/fx_ge.h" |
| #include "third_party/base/numerics/safe_math.h" |
| |
| CFX_ClipRgn::CFX_ClipRgn(int width, int height) |
| : m_Type(RectI), m_Box(0, 0, width, height) {} |
| |
| CFX_ClipRgn::CFX_ClipRgn(const FX_RECT& rect) : m_Type(RectI), m_Box(rect) {} |
| |
| CFX_ClipRgn::CFX_ClipRgn(const CFX_ClipRgn& src) { |
| m_Type = src.m_Type; |
| m_Box = src.m_Box; |
| m_Mask = src.m_Mask; |
| } |
| |
| CFX_ClipRgn::~CFX_ClipRgn() {} |
| |
| void CFX_ClipRgn::Reset(const FX_RECT& rect) { |
| m_Type = RectI; |
| m_Box = rect; |
| m_Mask.SetNull(); |
| } |
| |
| void CFX_ClipRgn::IntersectRect(const FX_RECT& rect) { |
| if (m_Type == RectI) { |
| m_Box.Intersect(rect); |
| return; |
| } |
| if (m_Type == MaskF) { |
| IntersectMaskRect(rect, m_Box, m_Mask); |
| return; |
| } |
| } |
| |
| void CFX_ClipRgn::IntersectMaskRect(FX_RECT rect, |
| FX_RECT mask_rect, |
| CFX_DIBitmapRef Mask) { |
| const CFX_DIBitmap* mask_dib = Mask.GetObject(); |
| m_Type = MaskF; |
| m_Box = rect; |
| m_Box.Intersect(mask_rect); |
| if (m_Box.IsEmpty()) { |
| m_Type = RectI; |
| return; |
| } |
| if (m_Box == mask_rect) { |
| m_Mask = Mask; |
| return; |
| } |
| CFX_DIBitmap* new_dib = m_Mask.New(); |
| if (!new_dib) { |
| return; |
| } |
| new_dib->Create(m_Box.Width(), m_Box.Height(), FXDIB_8bppMask); |
| for (int row = m_Box.top; row < m_Box.bottom; row++) { |
| uint8_t* dest_scan = |
| new_dib->GetBuffer() + new_dib->GetPitch() * (row - m_Box.top); |
| uint8_t* src_scan = |
| mask_dib->GetBuffer() + mask_dib->GetPitch() * (row - mask_rect.top); |
| for (int col = m_Box.left; col < m_Box.right; col++) { |
| dest_scan[col - m_Box.left] = src_scan[col - mask_rect.left]; |
| } |
| } |
| } |
| |
| void CFX_ClipRgn::IntersectMaskF(int left, int top, CFX_DIBitmapRef Mask) { |
| const CFX_DIBitmap* mask_dib = Mask.GetObject(); |
| ASSERT(mask_dib->GetFormat() == FXDIB_8bppMask); |
| FX_RECT mask_box(left, top, left + mask_dib->GetWidth(), |
| top + mask_dib->GetHeight()); |
| if (m_Type == RectI) { |
| IntersectMaskRect(m_Box, mask_box, Mask); |
| return; |
| } |
| if (m_Type == MaskF) { |
| FX_RECT new_box = m_Box; |
| new_box.Intersect(mask_box); |
| if (new_box.IsEmpty()) { |
| m_Type = RectI; |
| m_Mask.SetNull(); |
| m_Box = new_box; |
| return; |
| } |
| CFX_DIBitmapRef new_mask; |
| CFX_DIBitmap* new_dib = new_mask.New(); |
| if (!new_dib) { |
| return; |
| } |
| new_dib->Create(new_box.Width(), new_box.Height(), FXDIB_8bppMask); |
| const CFX_DIBitmap* old_dib = m_Mask.GetObject(); |
| for (int row = new_box.top; row < new_box.bottom; row++) { |
| uint8_t* old_scan = |
| old_dib->GetBuffer() + (row - m_Box.top) * old_dib->GetPitch(); |
| uint8_t* mask_scan = |
| mask_dib->GetBuffer() + (row - top) * mask_dib->GetPitch(); |
| uint8_t* new_scan = |
| new_dib->GetBuffer() + (row - new_box.top) * new_dib->GetPitch(); |
| for (int col = new_box.left; col < new_box.right; col++) { |
| new_scan[col - new_box.left] = |
| old_scan[col - m_Box.left] * mask_scan[col - left] / 255; |
| } |
| } |
| m_Box = new_box; |
| m_Mask = new_mask; |
| return; |
| } |
| ASSERT(FALSE); |
| } |
| |
| CFX_PathData::CFX_PathData() |
| : m_PointCount(0), m_pPoints(nullptr), m_AllocCount(0) {} |
| |
| CFX_PathData::~CFX_PathData() { |
| FX_Free(m_pPoints); |
| } |
| |
| void CFX_PathData::SetPointCount(int nPoints) { |
| m_PointCount = nPoints; |
| if (m_AllocCount < nPoints) { |
| FX_Free(m_pPoints); |
| m_pPoints = FX_Alloc(FX_PATHPOINT, nPoints); |
| m_AllocCount = nPoints; |
| } |
| } |
| |
| void CFX_PathData::AllocPointCount(int nPoints) { |
| if (m_AllocCount < nPoints) { |
| FX_PATHPOINT* pNewBuf = FX_Alloc(FX_PATHPOINT, nPoints); |
| if (m_PointCount) { |
| FXSYS_memcpy(pNewBuf, m_pPoints, m_PointCount * sizeof(FX_PATHPOINT)); |
| } |
| FX_Free(m_pPoints); |
| m_pPoints = pNewBuf; |
| m_AllocCount = nPoints; |
| } |
| } |
| |
| CFX_PathData::CFX_PathData(const CFX_PathData& src) { |
| m_PointCount = m_AllocCount = src.m_PointCount; |
| m_pPoints = FX_Alloc(FX_PATHPOINT, src.m_PointCount); |
| FXSYS_memcpy(m_pPoints, src.m_pPoints, sizeof(FX_PATHPOINT) * m_PointCount); |
| } |
| |
| void CFX_PathData::TrimPoints(int nPoints) { |
| if (m_PointCount <= nPoints) { |
| return; |
| } |
| SetPointCount(nPoints); |
| } |
| |
| void CFX_PathData::AddPointCount(int addPoints) { |
| pdfium::base::CheckedNumeric<int> safe_new_count = m_PointCount; |
| safe_new_count += addPoints; |
| int new_count = safe_new_count.ValueOrDie(); |
| AllocPointCount(new_count); |
| m_PointCount = new_count; |
| } |
| |
| void CFX_PathData::Append(const CFX_PathData* pSrc, const CFX_Matrix* pMatrix) { |
| int old_count = m_PointCount; |
| AddPointCount(pSrc->m_PointCount); |
| FXSYS_memcpy(m_pPoints + old_count, pSrc->m_pPoints, |
| pSrc->m_PointCount * sizeof(FX_PATHPOINT)); |
| if (pMatrix) { |
| for (int i = 0; i < pSrc->m_PointCount; i++) { |
| pMatrix->Transform(m_pPoints[old_count + i].m_PointX, |
| m_pPoints[old_count + i].m_PointY); |
| } |
| } |
| } |
| |
| void CFX_PathData::SetPoint(int index, FX_FLOAT x, FX_FLOAT y, int flag) { |
| ASSERT(index < m_PointCount); |
| m_pPoints[index].m_PointX = x; |
| m_pPoints[index].m_PointY = y; |
| m_pPoints[index].m_Flag = flag; |
| } |
| |
| void CFX_PathData::AppendRect(FX_FLOAT left, |
| FX_FLOAT bottom, |
| FX_FLOAT right, |
| FX_FLOAT top) { |
| int old_count = m_PointCount; |
| AddPointCount(5); |
| FX_PATHPOINT* pPoints = m_pPoints + old_count; |
| pPoints[0].m_PointX = pPoints[1].m_PointX = pPoints[4].m_PointX = left; |
| pPoints[2].m_PointX = pPoints[3].m_PointX = right; |
| pPoints[0].m_PointY = pPoints[3].m_PointY = pPoints[4].m_PointY = bottom; |
| pPoints[1].m_PointY = pPoints[2].m_PointY = top; |
| pPoints[0].m_Flag = FXPT_MOVETO; |
| pPoints[1].m_Flag = pPoints[2].m_Flag = pPoints[3].m_Flag = FXPT_LINETO; |
| pPoints[4].m_Flag = FXPT_LINETO | FXPT_CLOSEFIGURE; |
| } |
| |
| CFX_FloatRect CFX_PathData::GetBoundingBox() const { |
| CFX_FloatRect rect; |
| if (m_PointCount) { |
| rect.InitRect(m_pPoints[0].m_PointX, m_pPoints[0].m_PointY); |
| for (int i = 1; i < m_PointCount; i++) { |
| rect.UpdateRect(m_pPoints[i].m_PointX, m_pPoints[i].m_PointY); |
| } |
| } |
| return rect; |
| } |
| |
| static void _UpdateLineEndPoints(CFX_FloatRect& rect, |
| FX_FLOAT start_x, |
| FX_FLOAT start_y, |
| FX_FLOAT end_x, |
| FX_FLOAT end_y, |
| FX_FLOAT hw) { |
| if (start_x == end_x) { |
| if (start_y == end_y) { |
| rect.UpdateRect(end_x + hw, end_y + hw); |
| rect.UpdateRect(end_x - hw, end_y - hw); |
| return; |
| } |
| FX_FLOAT point_y; |
| if (end_y < start_y) { |
| point_y = end_y - hw; |
| } else { |
| point_y = end_y + hw; |
| } |
| rect.UpdateRect(end_x + hw, point_y); |
| rect.UpdateRect(end_x - hw, point_y); |
| return; |
| } |
| if (start_y == end_y) { |
| FX_FLOAT point_x; |
| if (end_x < start_x) { |
| point_x = end_x - hw; |
| } else { |
| point_x = end_x + hw; |
| } |
| rect.UpdateRect(point_x, end_y + hw); |
| rect.UpdateRect(point_x, end_y - hw); |
| return; |
| } |
| FX_FLOAT dx = end_x - start_x; |
| FX_FLOAT dy = end_y - start_y; |
| FX_FLOAT ll = FXSYS_sqrt2(dx, dy); |
| FX_FLOAT mx = end_x + hw * dx / ll; |
| FX_FLOAT my = end_y + hw * dy / ll; |
| FX_FLOAT dx1 = hw * dy / ll; |
| FX_FLOAT dy1 = hw * dx / ll; |
| rect.UpdateRect(mx - dx1, my + dy1); |
| rect.UpdateRect(mx + dx1, my - dy1); |
| } |
| |
| static void _UpdateLineJoinPoints(CFX_FloatRect& rect, |
| FX_FLOAT start_x, |
| FX_FLOAT start_y, |
| FX_FLOAT middle_x, |
| FX_FLOAT middle_y, |
| FX_FLOAT end_x, |
| FX_FLOAT end_y, |
| FX_FLOAT half_width, |
| FX_FLOAT miter_limit) { |
| FX_FLOAT start_k = 0, start_c = 0, end_k = 0, end_c = 0, start_len = 0, |
| start_dc = 0, end_len = 0, end_dc = 0; |
| FX_BOOL bStartVert = FXSYS_fabs(start_x - middle_x) < 1.0f / 20; |
| FX_BOOL bEndVert = FXSYS_fabs(middle_x - end_x) < 1.0f / 20; |
| if (bStartVert && bEndVert) { |
| int start_dir = middle_y > start_y ? 1 : -1; |
| FX_FLOAT point_y = middle_y + half_width * start_dir; |
| rect.UpdateRect(middle_x + half_width, point_y); |
| rect.UpdateRect(middle_x - half_width, point_y); |
| return; |
| } |
| if (!bStartVert) { |
| start_k = (middle_y - start_y) / (middle_x - start_x); |
| start_c = middle_y - (start_k * middle_x); |
| start_len = FXSYS_sqrt2(start_x - middle_x, start_y - middle_y); |
| start_dc = |
| (FX_FLOAT)FXSYS_fabs(half_width * start_len / (start_x - middle_x)); |
| } |
| if (!bEndVert) { |
| end_k = (end_y - middle_y) / (end_x - middle_x); |
| end_c = middle_y - (end_k * middle_x); |
| end_len = FXSYS_sqrt2(end_x - middle_x, end_y - middle_y); |
| end_dc = (FX_FLOAT)FXSYS_fabs(half_width * end_len / (end_x - middle_x)); |
| } |
| if (bStartVert) { |
| FX_FLOAT outside_x = start_x; |
| if (end_x < start_x) { |
| outside_x += half_width; |
| } else { |
| outside_x -= half_width; |
| } |
| FX_FLOAT outside_y; |
| if (start_y < (end_k * start_x) + end_c) { |
| outside_y = (end_k * outside_x) + end_c + end_dc; |
| } else { |
| outside_y = (end_k * outside_x) + end_c - end_dc; |
| } |
| rect.UpdateRect(outside_x, outside_y); |
| return; |
| } |
| if (bEndVert) { |
| FX_FLOAT outside_x = end_x; |
| if (start_x < end_x) { |
| outside_x += half_width; |
| } else { |
| outside_x -= half_width; |
| } |
| FX_FLOAT outside_y; |
| if (end_y < (start_k * end_x) + start_c) { |
| outside_y = (start_k * outside_x) + start_c + start_dc; |
| } else { |
| outside_y = (start_k * outside_x) + start_c - start_dc; |
| } |
| rect.UpdateRect(outside_x, outside_y); |
| return; |
| } |
| if (FXSYS_fabs(start_k - end_k) < 1.0f / 20) { |
| int start_dir = middle_x > start_x ? 1 : -1; |
| int end_dir = end_x > middle_x ? 1 : -1; |
| if (start_dir == end_dir) { |
| _UpdateLineEndPoints(rect, middle_x, middle_y, end_x, end_y, half_width); |
| } else { |
| _UpdateLineEndPoints(rect, start_x, start_y, middle_x, middle_y, |
| half_width); |
| } |
| return; |
| } |
| FX_FLOAT start_outside_c = start_c; |
| if (end_y < (start_k * end_x) + start_c) { |
| start_outside_c += start_dc; |
| } else { |
| start_outside_c -= start_dc; |
| } |
| FX_FLOAT end_outside_c = end_c; |
| if (start_y < (end_k * start_x) + end_c) { |
| end_outside_c += end_dc; |
| } else { |
| end_outside_c -= end_dc; |
| } |
| FX_FLOAT join_x = (end_outside_c - start_outside_c) / (start_k - end_k); |
| FX_FLOAT join_y = (start_k * join_x) + start_outside_c; |
| rect.UpdateRect(join_x, join_y); |
| } |
| |
| CFX_FloatRect CFX_PathData::GetBoundingBox(FX_FLOAT line_width, |
| FX_FLOAT miter_limit) const { |
| CFX_FloatRect rect(100000 * 1.0f, 100000 * 1.0f, -100000 * 1.0f, |
| -100000 * 1.0f); |
| int iPoint = 0; |
| FX_FLOAT half_width = line_width; |
| int iStartPoint = 0; |
| int iEndPoint = 0; |
| int iMiddlePoint = 0; |
| FX_BOOL bJoin; |
| while (iPoint < m_PointCount) { |
| if (m_pPoints[iPoint].m_Flag == FXPT_MOVETO) { |
| iStartPoint = iPoint + 1; |
| iEndPoint = iPoint; |
| bJoin = FALSE; |
| } else { |
| if (m_pPoints[iPoint].m_Flag == FXPT_BEZIERTO) { |
| rect.UpdateRect(m_pPoints[iPoint].m_PointX, m_pPoints[iPoint].m_PointY); |
| rect.UpdateRect(m_pPoints[iPoint + 1].m_PointX, |
| m_pPoints[iPoint + 1].m_PointY); |
| iPoint += 2; |
| } |
| if (iPoint == m_PointCount - 1 || |
| m_pPoints[iPoint + 1].m_Flag == FXPT_MOVETO) { |
| iStartPoint = iPoint - 1; |
| iEndPoint = iPoint; |
| bJoin = FALSE; |
| } else { |
| iStartPoint = iPoint - 1; |
| iMiddlePoint = iPoint; |
| iEndPoint = iPoint + 1; |
| bJoin = TRUE; |
| } |
| } |
| FX_FLOAT start_x = m_pPoints[iStartPoint].m_PointX; |
| FX_FLOAT start_y = m_pPoints[iStartPoint].m_PointY; |
| FX_FLOAT end_x = m_pPoints[iEndPoint].m_PointX; |
| FX_FLOAT end_y = m_pPoints[iEndPoint].m_PointY; |
| if (bJoin) { |
| FX_FLOAT middle_x = m_pPoints[iMiddlePoint].m_PointX; |
| FX_FLOAT middle_y = m_pPoints[iMiddlePoint].m_PointY; |
| _UpdateLineJoinPoints(rect, start_x, start_y, middle_x, middle_y, end_x, |
| end_y, half_width, miter_limit); |
| } else { |
| _UpdateLineEndPoints(rect, start_x, start_y, end_x, end_y, half_width); |
| } |
| iPoint++; |
| } |
| return rect; |
| } |
| |
| void CFX_PathData::Transform(const CFX_Matrix* pMatrix) { |
| if (!pMatrix) { |
| return; |
| } |
| for (int i = 0; i < m_PointCount; i++) { |
| pMatrix->Transform(m_pPoints[i].m_PointX, m_pPoints[i].m_PointY); |
| } |
| } |
| |
| FX_BOOL CFX_PathData::GetZeroAreaPath(CFX_PathData& NewPath, |
| CFX_Matrix* pMatrix, |
| FX_BOOL& bThin, |
| FX_BOOL bAdjust) const { |
| if (m_PointCount < 3) { |
| return FALSE; |
| } |
| if (m_PointCount == 3 && (m_pPoints[0].m_Flag & FXPT_TYPE) == FXPT_MOVETO && |
| (m_pPoints[1].m_Flag & FXPT_TYPE) == FXPT_LINETO && |
| (m_pPoints[2].m_Flag & FXPT_TYPE) == FXPT_LINETO && |
| m_pPoints[0].m_PointX == m_pPoints[2].m_PointX && |
| m_pPoints[0].m_PointY == m_pPoints[2].m_PointY) { |
| NewPath.AddPointCount(2); |
| if (bAdjust) { |
| if (pMatrix) { |
| FX_FLOAT x = m_pPoints[0].m_PointX, y = m_pPoints[0].m_PointY; |
| pMatrix->TransformPoint(x, y); |
| x = (int)x + 0.5f; |
| y = (int)y + 0.5f; |
| NewPath.SetPoint(0, x, y, FXPT_MOVETO); |
| x = m_pPoints[1].m_PointX, y = m_pPoints[1].m_PointY; |
| pMatrix->TransformPoint(x, y); |
| x = (int)x + 0.5f; |
| y = (int)y + 0.5f; |
| NewPath.SetPoint(1, x, y, FXPT_LINETO); |
| pMatrix->SetIdentity(); |
| } else { |
| FX_FLOAT x = (int)m_pPoints[0].m_PointX + 0.5f, |
| y = (int)m_pPoints[0].m_PointY + 0.5f; |
| NewPath.SetPoint(0, x, y, FXPT_MOVETO); |
| x = (int)m_pPoints[1].m_PointX + 0.5f, |
| y = (int)m_pPoints[1].m_PointY + 0.5f; |
| NewPath.SetPoint(1, x, y, FXPT_LINETO); |
| } |
| } else { |
| NewPath.SetPoint(0, m_pPoints[0].m_PointX, m_pPoints[0].m_PointY, |
| FXPT_MOVETO); |
| NewPath.SetPoint(1, m_pPoints[1].m_PointX, m_pPoints[1].m_PointY, |
| FXPT_LINETO); |
| } |
| if (m_pPoints[0].m_PointX != m_pPoints[1].m_PointX && |
| m_pPoints[0].m_PointY != m_pPoints[1].m_PointY) { |
| bThin = TRUE; |
| } |
| return TRUE; |
| } |
| if (((m_PointCount > 3) && (m_PointCount % 2))) { |
| int mid = m_PointCount / 2; |
| FX_BOOL bZeroArea = FALSE; |
| CFX_PathData t_path; |
| for (int i = 0; i < mid; i++) { |
| if (!(m_pPoints[mid - i - 1].m_PointX == |
| m_pPoints[mid + i + 1].m_PointX && |
| m_pPoints[mid - i - 1].m_PointY == |
| m_pPoints[mid + i + 1].m_PointY && |
| ((m_pPoints[mid - i - 1].m_Flag & FXPT_TYPE) != FXPT_BEZIERTO && |
| (m_pPoints[mid + i + 1].m_Flag & FXPT_TYPE) != FXPT_BEZIERTO))) { |
| bZeroArea = TRUE; |
| break; |
| } |
| int new_count = t_path.GetPointCount(); |
| t_path.AddPointCount(2); |
| t_path.SetPoint(new_count, m_pPoints[mid - i].m_PointX, |
| m_pPoints[mid - i].m_PointY, FXPT_MOVETO); |
| t_path.SetPoint(new_count + 1, m_pPoints[mid - i - 1].m_PointX, |
| m_pPoints[mid - i - 1].m_PointY, FXPT_LINETO); |
| } |
| if (!bZeroArea) { |
| NewPath.Append(&t_path, nullptr); |
| bThin = TRUE; |
| return TRUE; |
| } |
| } |
| int stratPoint = 0; |
| int next = 0, i; |
| for (i = 0; i < m_PointCount; i++) { |
| int point_type = m_pPoints[i].m_Flag & FXPT_TYPE; |
| if (point_type == FXPT_MOVETO) { |
| stratPoint = i; |
| } else if (point_type == FXPT_LINETO) { |
| next = (i + 1 - stratPoint) % (m_PointCount - stratPoint) + stratPoint; |
| if ((m_pPoints[next].m_Flag & FXPT_TYPE) != FXPT_BEZIERTO && |
| (m_pPoints[next].m_Flag & FXPT_TYPE) != FXPT_MOVETO) { |
| if ((m_pPoints[i - 1].m_PointX == m_pPoints[i].m_PointX && |
| m_pPoints[i].m_PointX == m_pPoints[next].m_PointX) && |
| ((m_pPoints[i].m_PointY - m_pPoints[i - 1].m_PointY) * |
| (m_pPoints[i].m_PointY - m_pPoints[next].m_PointY) > |
| 0)) { |
| int pre = i; |
| if (FXSYS_fabs(m_pPoints[i].m_PointY - m_pPoints[i - 1].m_PointY) < |
| FXSYS_fabs(m_pPoints[i].m_PointY - m_pPoints[next].m_PointY)) { |
| pre--; |
| next--; |
| } |
| int new_count = NewPath.GetPointCount(); |
| NewPath.AddPointCount(2); |
| NewPath.SetPoint(new_count, m_pPoints[pre].m_PointX, |
| m_pPoints[pre].m_PointY, FXPT_MOVETO); |
| NewPath.SetPoint(new_count + 1, m_pPoints[next].m_PointX, |
| m_pPoints[next].m_PointY, FXPT_LINETO); |
| } else if ((m_pPoints[i - 1].m_PointY == m_pPoints[i].m_PointY && |
| m_pPoints[i].m_PointY == m_pPoints[next].m_PointY) && |
| ((m_pPoints[i].m_PointX - m_pPoints[i - 1].m_PointX) * |
| (m_pPoints[i].m_PointX - m_pPoints[next].m_PointX) > |
| 0)) { |
| int pre = i; |
| if (FXSYS_fabs(m_pPoints[i].m_PointX - m_pPoints[i - 1].m_PointX) < |
| FXSYS_fabs(m_pPoints[i].m_PointX - m_pPoints[next].m_PointX)) { |
| pre--; |
| next--; |
| } |
| int new_count = NewPath.GetPointCount(); |
| NewPath.AddPointCount(2); |
| NewPath.SetPoint(new_count, m_pPoints[pre].m_PointX, |
| m_pPoints[pre].m_PointY, FXPT_MOVETO); |
| NewPath.SetPoint(new_count + 1, m_pPoints[next].m_PointX, |
| m_pPoints[next].m_PointY, FXPT_LINETO); |
| } else if ((m_pPoints[i - 1].m_Flag & FXPT_TYPE) == FXPT_MOVETO && |
| (m_pPoints[next].m_Flag & FXPT_TYPE) == FXPT_LINETO && |
| m_pPoints[i - 1].m_PointX == m_pPoints[next].m_PointX && |
| m_pPoints[i - 1].m_PointY == m_pPoints[next].m_PointY && |
| m_pPoints[next].m_Flag & FXPT_CLOSEFIGURE) { |
| int new_count = NewPath.GetPointCount(); |
| NewPath.AddPointCount(2); |
| NewPath.SetPoint(new_count, m_pPoints[i - 1].m_PointX, |
| m_pPoints[i - 1].m_PointY, FXPT_MOVETO); |
| NewPath.SetPoint(new_count + 1, m_pPoints[i].m_PointX, |
| m_pPoints[i].m_PointY, FXPT_LINETO); |
| bThin = TRUE; |
| } |
| } |
| } else if (point_type == FXPT_BEZIERTO) { |
| i += 2; |
| continue; |
| } |
| } |
| if (m_PointCount > 3 && NewPath.GetPointCount()) { |
| bThin = TRUE; |
| } |
| if (NewPath.GetPointCount() == 0) { |
| return FALSE; |
| } |
| return TRUE; |
| } |
| |
| FX_BOOL CFX_PathData::IsRect() const { |
| if (m_PointCount != 5 && m_PointCount != 4) { |
| return FALSE; |
| } |
| if ((m_PointCount == 5 && (m_pPoints[0].m_PointX != m_pPoints[4].m_PointX || |
| m_pPoints[0].m_PointY != m_pPoints[4].m_PointY)) || |
| (m_pPoints[0].m_PointX == m_pPoints[2].m_PointX && |
| m_pPoints[0].m_PointY == m_pPoints[2].m_PointY) || |
| (m_pPoints[1].m_PointX == m_pPoints[3].m_PointX && |
| m_pPoints[1].m_PointY == m_pPoints[3].m_PointY)) { |
| return FALSE; |
| } |
| if (m_pPoints[0].m_PointX != m_pPoints[3].m_PointX && |
| m_pPoints[0].m_PointY != m_pPoints[3].m_PointY) { |
| return FALSE; |
| } |
| for (int i = 1; i < 4; i++) { |
| if ((m_pPoints[i].m_Flag & FXPT_TYPE) != FXPT_LINETO) { |
| return FALSE; |
| } |
| if (m_pPoints[i].m_PointX != m_pPoints[i - 1].m_PointX && |
| m_pPoints[i].m_PointY != m_pPoints[i - 1].m_PointY) { |
| return FALSE; |
| } |
| } |
| return m_PointCount == 5 || (m_pPoints[3].m_Flag & FXPT_CLOSEFIGURE); |
| } |
| |
| FX_BOOL CFX_PathData::IsRect(const CFX_Matrix* pMatrix, |
| CFX_FloatRect* pRect) const { |
| if (!pMatrix) { |
| if (!IsRect()) { |
| return FALSE; |
| } |
| if (pRect) { |
| pRect->left = m_pPoints[0].m_PointX; |
| pRect->right = m_pPoints[2].m_PointX; |
| pRect->bottom = m_pPoints[0].m_PointY; |
| pRect->top = m_pPoints[2].m_PointY; |
| pRect->Normalize(); |
| } |
| return TRUE; |
| } |
| if (m_PointCount != 5 && m_PointCount != 4) { |
| return FALSE; |
| } |
| if ((m_PointCount == 5 && (m_pPoints[0].m_PointX != m_pPoints[4].m_PointX || |
| m_pPoints[0].m_PointY != m_pPoints[4].m_PointY)) || |
| (m_pPoints[1].m_PointX == m_pPoints[3].m_PointX && |
| m_pPoints[1].m_PointY == m_pPoints[3].m_PointY)) { |
| return FALSE; |
| } |
| if (m_PointCount == 4 && m_pPoints[0].m_PointX != m_pPoints[3].m_PointX && |
| m_pPoints[0].m_PointY != m_pPoints[3].m_PointY) { |
| return FALSE; |
| } |
| FX_FLOAT x[5], y[5]; |
| for (int i = 0; i < m_PointCount; i++) { |
| pMatrix->Transform(m_pPoints[i].m_PointX, m_pPoints[i].m_PointY, x[i], |
| y[i]); |
| if (i) { |
| if ((m_pPoints[i].m_Flag & FXPT_TYPE) != FXPT_LINETO) { |
| return FALSE; |
| } |
| if (x[i] != x[i - 1] && y[i] != y[i - 1]) { |
| return FALSE; |
| } |
| } |
| } |
| if (pRect) { |
| pRect->left = x[0]; |
| pRect->right = x[2]; |
| pRect->bottom = y[0]; |
| pRect->top = y[2]; |
| pRect->Normalize(); |
| } |
| return TRUE; |
| } |
| |
| void CFX_PathData::Copy(const CFX_PathData& src) { |
| SetPointCount(src.m_PointCount); |
| FXSYS_memcpy(m_pPoints, src.m_pPoints, sizeof(FX_PATHPOINT) * m_PointCount); |
| } |
| |
| CFX_GraphStateData::CFX_GraphStateData() |
| : m_LineCap(LineCapButt), |
| m_DashCount(0), |
| m_DashArray(nullptr), |
| m_DashPhase(0), |
| m_LineJoin(LineJoinMiter), |
| m_MiterLimit(10 * 1.0f), |
| m_LineWidth(1.0f) {} |
| |
| CFX_GraphStateData::CFX_GraphStateData(const CFX_GraphStateData& src) { |
| m_DashArray = nullptr; |
| Copy(src); |
| } |
| |
| void CFX_GraphStateData::Copy(const CFX_GraphStateData& src) { |
| m_LineCap = src.m_LineCap; |
| m_DashCount = src.m_DashCount; |
| FX_Free(m_DashArray); |
| m_DashArray = nullptr; |
| m_DashPhase = src.m_DashPhase; |
| m_LineJoin = src.m_LineJoin; |
| m_MiterLimit = src.m_MiterLimit; |
| m_LineWidth = src.m_LineWidth; |
| if (m_DashCount) { |
| m_DashArray = FX_Alloc(FX_FLOAT, m_DashCount); |
| FXSYS_memcpy(m_DashArray, src.m_DashArray, m_DashCount * sizeof(FX_FLOAT)); |
| } |
| } |
| |
| CFX_GraphStateData::~CFX_GraphStateData() { |
| FX_Free(m_DashArray); |
| } |
| |
| void CFX_GraphStateData::SetDashCount(int count) { |
| FX_Free(m_DashArray); |
| m_DashArray = nullptr; |
| m_DashCount = count; |
| if (count == 0) { |
| return; |
| } |
| m_DashArray = FX_Alloc(FX_FLOAT, count); |
| } |
