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// 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);
}