diff options
Diffstat (limited to 'xfa/src/fdp/src/fde/fde_geobject.cpp')
| -rw-r--r-- | xfa/src/fdp/src/fde/fde_geobject.cpp | 270 |
1 files changed, 270 insertions, 0 deletions
diff --git a/xfa/src/fdp/src/fde/fde_geobject.cpp b/xfa/src/fdp/src/fde/fde_geobject.cpp new file mode 100644 index 0000000000..9f34cf3051 --- /dev/null +++ b/xfa/src/fdp/src/fde/fde_geobject.cpp @@ -0,0 +1,270 @@ +// 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 "../../../foxitlib.h"
+#include "fde_object.h"
+#include "fde_geobject.h"
+#ifndef _FDEPLUS
+IFDE_Path* IFDE_Path::Create()
+{
+ return FDE_New CFDE_Path;
+}
+FX_BOOL CFDE_Path::StartFigure()
+{
+ return CloseFigure();
+}
+FX_BOOL CFDE_Path::CloseFigure()
+{
+ FX_PATHPOINT *pPoint = GetLastPoint();
+ if (pPoint) {
+ pPoint->m_Flag |= FXPT_CLOSEFIGURE;
+ }
+ return TRUE;
+}
+FX_PATHPOINT* CFDE_Path::GetLastPoint(FX_INT32 iCount ) const
+{
+ if (iCount < 1) {
+ return NULL;
+ }
+ FX_INT32 iPoints = m_Path.GetPointCount();
+ if (iCount > iPoints) {
+ return NULL;
+ }
+ return m_Path.GetPoints() + iPoints - iCount;
+}
+FX_BOOL CFDE_Path::FigureClosed() const
+{
+ FX_PATHPOINT *pPoint = GetLastPoint();
+ return pPoint ? (pPoint->m_Flag & FXPT_CLOSEFIGURE) : TRUE;
+}
+FX_PATHPOINT* CFDE_Path::AddPoints(FX_INT32 iCount)
+{
+ if (iCount < 1) {
+ return NULL;
+ }
+ FX_INT32 iPoints = m_Path.GetPointCount();
+ m_Path.AddPointCount(iCount);
+ return m_Path.GetPoints() + iPoints;
+}
+void CFDE_Path::MoveTo(FX_FLOAT fx, FX_FLOAT fy)
+{
+ FX_PATHPOINT *pPoint = AddPoints(1);
+ pPoint->m_PointX = fx;
+ pPoint->m_PointY = fy;
+ pPoint->m_Flag = FXPT_MOVETO;
+}
+void CFDE_Path::LineTo(FX_FLOAT fx, FX_FLOAT fy)
+{
+ FX_PATHPOINT *pPoint = AddPoints(1);
+ pPoint->m_PointX = fx;
+ pPoint->m_PointY = fy;
+ pPoint->m_Flag = FXPT_LINETO;
+}
+void CFDE_Path::BezierTo(const CFX_PointF &p1, const CFX_PointF &p2, const CFX_PointF &p3)
+{
+ FX_PATHPOINT *p = AddPoints(3);
+ p[0].m_PointX = p1.x;
+ p[0].m_PointY = p1.y;
+ p[0].m_Flag = FXPT_BEZIERTO;
+ p[1].m_PointX = p2.x;
+ p[1].m_PointY = p2.y;
+ p[1].m_Flag = FXPT_BEZIERTO;
+ p[2].m_PointX = p3.x;
+ p[2].m_PointY = p3.y;
+ p[2].m_Flag = FXPT_BEZIERTO;
+}
+void CFDE_Path::ArcTo(FX_BOOL bStart, const CFX_RectF &rect, FX_FLOAT startAngle, FX_FLOAT endAngle)
+{
+ FX_FLOAT rx = rect.width / 2;
+ FX_FLOAT ry = rect.height / 2;
+ FX_FLOAT cx = rect.left + rx;
+ FX_FLOAT cy = rect.top + ry;
+ FX_FLOAT alpha = FXSYS_atan2(rx * FXSYS_sin(startAngle), ry * FXSYS_cos(startAngle));
+ FX_FLOAT beta = FXSYS_atan2(rx * FXSYS_sin(endAngle), ry * FXSYS_cos(endAngle));
+ if (FXSYS_fabs(beta - alpha) > FX_PI) {
+ if (beta > alpha) {
+ beta -= 2 * FX_PI;
+ } else {
+ alpha -= 2 * FX_PI;
+ }
+ }
+ FX_FLOAT half_delta = (beta - alpha) / 2;
+ FX_FLOAT bcp = 4.0f / 3 * (1 - FXSYS_cos(half_delta)) / FXSYS_sin(half_delta);
+ FX_FLOAT sin_alpha = FXSYS_sin(alpha);
+ FX_FLOAT sin_beta = FXSYS_sin(beta);
+ FX_FLOAT cos_alpha = FXSYS_cos(alpha);
+ FX_FLOAT cos_beta = FXSYS_cos(beta);
+ if (bStart) {
+ CFX_PointF p0;
+ p0.Set(cx + rx * cos_alpha, cy + ry * sin_alpha);
+ MoveTo(p0);
+ }
+ CFX_PointF p1;
+ p1.Set(cx + rx * (cos_alpha - bcp * sin_alpha), cy + ry * (sin_alpha + bcp * cos_alpha));
+ CFX_PointF p2;
+ p2.Set(cx + rx * (cos_beta + bcp * sin_beta), cy + ry * (sin_beta - bcp * cos_beta));
+ CFX_PointF p3;
+ p3.Set(cx + rx * cos_beta, cy + ry * sin_beta);
+ BezierTo(p1, p2, p3);
+}
+void CFDE_Path::AddBezier(const CFX_PointsF &points)
+{
+ if (points.GetSize() != 4) {
+ return;
+ }
+ FX_LPCPOINTF p = points.GetData();
+ MoveTo(p[0]);
+ BezierTo(p[1], p[2], p[3]);
+}
+void CFDE_Path::AddBeziers(const CFX_PointsF &points)
+{
+ FX_INT32 iCount = points.GetSize();
+ if (iCount < 4) {
+ return;
+ }
+ FX_LPCPOINTF p = points.GetData();
+ FX_LPCPOINTF pEnd = p + iCount;
+ MoveTo(p[0]);
+ for (++p; p <= pEnd - 3; p += 3) {
+ BezierTo(p[0], p[1], p[2]);
+ }
+}
+void CFDE_Path::GetCurveTangents(const CFX_PointsF &points, CFX_PointsF &tangents, FX_BOOL bClosed, FX_FLOAT fTension) const
+{
+ FX_INT32 iCount = points.GetSize();
+ tangents.SetSize(iCount);
+ if (iCount < 3) {
+ return;
+ }
+ FX_FLOAT fCoefficient = fTension / 3.0f;
+ FX_LPCPOINTF pPoints = points.GetData();
+ FX_LPPOINTF pTangents = tangents.GetData();
+ for (FX_INT32 i = 0; i < iCount; ++i) {
+ FX_INT32 r = i + 1;
+ FX_INT32 s = i - 1;
+ if (r >= iCount) {
+ r = bClosed ? (r - iCount) : (iCount - 1);
+ }
+ if (s < 0) {
+ s = bClosed ? (s + iCount) : 0;
+ }
+ pTangents[i].x += (fCoefficient * (pPoints[r].x - pPoints[s].x));
+ pTangents[i].y += (fCoefficient * (pPoints[r].y - pPoints[s].y));
+ }
+}
+void CFDE_Path::AddCurve(const CFX_PointsF &points, FX_BOOL bClosed, FX_FLOAT fTension)
+{
+ FX_INT32 iLast = points.GetUpperBound();
+ if (iLast < 1) {
+ return;
+ }
+ CFX_PointsF tangents;
+ GetCurveTangents(points, tangents, bClosed, fTension);
+ FX_LPCPOINTF pPoints = points.GetData();
+ FX_LPPOINTF pTangents = tangents.GetData();
+ MoveTo(pPoints[0]);
+ for (FX_INT32 i = 0; i < iLast; ++i) {
+ FX_INT32 j = i + 1;
+ CFX_PointF p1;
+ p1.Set(pPoints[i].x + pTangents[i].x, pPoints[i].y + pTangents[i].y);
+ CFX_PointF p2;
+ p2.Set(pPoints[j].x - pTangents[j].x, pPoints[j].y - pTangents[j].y);
+ CFX_PointF p3;
+ p3.Set(pPoints[j].x, pPoints[j].y);
+ BezierTo(p1, p2, p3);
+ }
+ if (bClosed) {
+ CFX_PointF p1;
+ p1.Set(pPoints[iLast].x + pTangents[iLast].x, pPoints[iLast].y + pTangents[iLast].y);
+ CFX_PointF p2;
+ p2.Set(pPoints[0].x - pTangents[0].x, pPoints[0].y - pTangents[0].y);
+ CFX_PointF p3;
+ p3.Set(pPoints[0].x, pPoints[0].y);
+ BezierTo(p1, p2, p3);
+ CloseFigure();
+ }
+}
+void CFDE_Path::AddEllipse(const CFX_RectF &rect)
+{
+ FX_FLOAT fStartAngle = 0;
+ FX_FLOAT fEndAngle = FX_PI / 2;
+ for (FX_INT32 i = 0; i < 4; ++i) {
+ ArcTo(i == 0, rect, fStartAngle, fEndAngle);
+ fStartAngle += FX_PI / 2;
+ fEndAngle += FX_PI / 2;
+ }
+ CloseFigure();
+}
+void CFDE_Path::AddLine(const CFX_PointF &pt1, const CFX_PointF &pt2)
+{
+ FX_PATHPOINT *pLast = GetLastPoint();
+ if (pLast == NULL || FXSYS_fabs(pLast->m_PointX - pt1.x) > 0.001 || FXSYS_fabs(pLast->m_PointY - pt1.y) > 0.001) {
+ MoveTo(pt1);
+ }
+ LineTo(pt2);
+}
+void CFDE_Path::AddPath(const IFDE_Path *pSrc, FX_BOOL bConnect)
+{
+ CFDE_Path *pPath = (CFDE_Path*)pSrc;
+ if (pPath == NULL) {
+ return;
+ }
+ FX_INT32 iCount = pPath->m_Path.GetPointCount();
+ if (iCount < 1) {
+ return;
+ }
+ if (bConnect) {
+ LineTo(pPath->m_Path.GetPointX(0), pPath->m_Path.GetPointY(0));
+ }
+ m_Path.Append(&pPath->m_Path, NULL);
+}
+void CFDE_Path::AddPolygon(const CFX_PointsF &points)
+{
+ FX_INT32 iCount = points.GetSize();
+ if (iCount < 2) {
+ return;
+ }
+ AddLines(points);
+ FX_LPCPOINTF p = points.GetData();
+ if (FXSYS_fabs(p[0].x - p[iCount - 1].x) < 0.01f || FXSYS_fabs(p[0].y - p[iCount - 1].y) < 0.01f) {
+ LineTo(p[0]);
+ }
+ CloseFigure();
+}
+void CFDE_Path::AddLines(const CFX_PointsF &points)
+{
+ FX_INT32 iCount = points.GetSize();
+ if (iCount < 2) {
+ return;
+ }
+ FX_LPCPOINTF p = points.GetData();
+ FX_LPCPOINTF pEnd = p + iCount;
+ MoveTo(p[0]);
+ for (++p; p < pEnd; ++p) {
+ LineTo(*p);
+ }
+}
+void CFDE_Path::AddRectangle(const CFX_RectF &rect)
+{
+ MoveTo(rect.TopLeft());
+ LineTo(rect.TopRight());
+ LineTo(rect.BottomRight());
+ LineTo(rect.BottomLeft());
+ CloseFigure();
+}
+void CFDE_Path::GetBBox(CFX_RectF &bbox) const
+{
+ CFX_FloatRect rect = m_Path.GetBoundingBox();
+ bbox.Set(rect.left, rect.top, rect.Width(), rect.Height());
+ bbox.Normalize();
+}
+void CFDE_Path::GetBBox(CFX_RectF &bbox, FX_FLOAT fLineWidth, FX_FLOAT fMiterLimit) const
+{
+ CFX_FloatRect rect = m_Path.GetBoundingBox(fLineWidth, fMiterLimit);
+ bbox.Set(rect.left, rect.top, rect.Width(), rect.Height());
+ bbox.Normalize();
+}
+#endif
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