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authorJens-Heiner Rechtien <hr@openoffice.org>2000-09-18 16:07:07 +0000
committerJens-Heiner Rechtien <hr@openoffice.org>2000-09-18 16:07:07 +0000
commitfd069bee7e57ad529c3c0974559fd2d84ec3151a (patch)
treeef2eddeefb786feaf966d6a1c0c291872c0ae420 /svx/source/svdraw/gradtrns.cxx
parent04c1c754ab9d0ad07f2c5362d46597d13efe75c2 (diff)
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+/*************************************************************************
+ *
+ * $RCSfile: gradtrns.cxx,v $
+ *
+ * $Revision: 1.1.1.1 $
+ *
+ * last change: $Author: hr $ $Date: 2000-09-18 17:01:24 $
+ *
+ * The Contents of this file are made available subject to the terms of
+ * either of the following licenses
+ *
+ * - GNU Lesser General Public License Version 2.1
+ * - Sun Industry Standards Source License Version 1.1
+ *
+ * Sun Microsystems Inc., October, 2000
+ *
+ * GNU Lesser General Public License Version 2.1
+ * =============================================
+ * Copyright 2000 by Sun Microsystems, Inc.
+ * 901 San Antonio Road, Palo Alto, CA 94303, USA
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software Foundation.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ *
+ * Sun Industry Standards Source License Version 1.1
+ * =================================================
+ * The contents of this file are subject to the Sun Industry Standards
+ * Source License Version 1.1 (the "License"); You may not use this file
+ * except in compliance with the License. You may obtain a copy of the
+ * License at http://www.openoffice.org/license.html.
+ *
+ * Software provided under this License is provided on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
+ * WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
+ * MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
+ * See the License for the specific provisions governing your rights and
+ * obligations concerning the Software.
+ *
+ * The Initial Developer of the Original Code is: Sun Microsystems, Inc.
+ *
+ * Copyright: 2000 by Sun Microsystems, Inc.
+ *
+ * All Rights Reserved.
+ *
+ * Contributor(s): _______________________________________
+ *
+ *
+ ************************************************************************/
+
+#include "gradtrns.hxx"
+#include "svdobj.hxx"
+
+#ifndef _B3D_B3DCOLOR_HXX
+#include <goodies/b3dcolor.hxx>
+#endif
+
+#ifndef _B2D_MATRIX3D_HXX
+#include <goodies/matrix3d.hxx>
+#endif
+
+void GradTransformer::CreateRotatedBoundRect(double fDegree)
+{
+ // create back-rotated BoundRect to get the vector length
+ Vector2D aMid(aCenter);
+ Matrix3D aTrans;
+ Rectangle aNewRect;
+
+ aTrans.Translate(-aMid);
+ aTrans.Rotate(fDegree);
+ aTrans.Translate(aMid);
+
+ Vector2D aNew(aBoundRect.TopLeft());
+ aNew *= aTrans;
+ Point aNewTrans((INT32)(aNew.X() + 0.5), (INT32)(aNew.Y() + 0.5));
+ aNewRect.Union(Rectangle(aNewTrans, aNewTrans));
+
+ aNew = Vector2D(aBoundRect.TopRight());
+ aNew *= aTrans;
+ aNewTrans = Point((INT32)(aNew.X() + 0.5), (INT32)(aNew.Y() + 0.5));
+ aNewRect.Union(Rectangle(aNewTrans, aNewTrans));
+
+ aNew = Vector2D(aBoundRect.BottomLeft());
+ aNew *= aTrans;
+ aNewTrans = Point((INT32)(aNew.X() + 0.5), (INT32)(aNew.Y() + 0.5));
+ aNewRect.Union(Rectangle(aNewTrans, aNewTrans));
+
+ aNew = Vector2D(aBoundRect.BottomRight());
+ aNew *= aTrans;
+ aNewTrans = Point((INT32)(aNew.X() + 0.5), (INT32)(aNew.Y() + 0.5));
+ aNewRect.Union(Rectangle(aNewTrans, aNewTrans));
+
+ aBoundRect = aNewRect;
+ aCenter = aBoundRect.Center();
+}
+
+//
+// gradient to vector representation
+//
+
+void GradTransformer::GradToVec(GradTransGradient& rG, GradTransVector& rV, const SdrObject* pObj)
+{
+ // calc colors and set them
+ rV.aCol1 = rG.aGradient.GetStartColor();
+ rV.aCol2 = rG.aGradient.GetEndColor();
+
+ if(rG.aGradient.GetStartIntens() != 100)
+ {
+ double fFact = (double)rG.aGradient.GetStartIntens() / 100.0;
+ rV.aCol1 = (B3dColor)rV.aCol1 * fFact;
+ }
+
+ if(rG.aGradient.GetEndIntens() != 100)
+ {
+ double fFact = (double)rG.aGradient.GetEndIntens() / 100.0;
+ rV.aCol2 = (B3dColor)rV.aCol2 * fFact;
+ }
+
+ // now calc the positions for the color handles
+ aBoundRect = pObj->GetBoundRect();
+ aCenter = aBoundRect.Center();
+ fObjectAngle = 0.0;
+ fGradientAngle = 0.0;
+
+ // gradient rotates with the object (!!!)
+ if(pObj->GetRotateAngle())
+ fObjectAngle = (double)(pObj->GetRotateAngle() / 100) * F_PI180;
+
+ // get gradient angle
+ if(rG.aGradient.GetAngle())
+ fGradientAngle = (double)rG.aGradient.GetAngle() * (F_PI180 / 10.0);
+
+ // correct object and gradient rotation for object boundrect
+ if(fGradientAngle || fObjectAngle)
+ CreateRotatedBoundRect(fGradientAngle + fObjectAngle);
+
+ // build the in-between vector (top-down)
+ bInnerOuterChanged = FALSE;
+ bDoCorrectOffset = FALSE;
+
+ switch(rG.aGradient.GetGradientStyle())
+ {
+ case XGRAD_LINEAR :
+ {
+ // vector from top to bottom
+ aStartPos = Vector2D(aCenter.X(), aBoundRect.Top());
+ aEndPos = Vector2D(aCenter.X(), aBoundRect.Bottom());
+ aCenterPos = Vector2D(aCenter);
+ break;
+ }
+ case XGRAD_AXIAL :
+ {
+ // mirrored in center; set starpos, endpos from center to bottom
+ aStartPos = Vector2D(aCenter);
+ aEndPos = Vector2D(aCenter.X(), aBoundRect.Bottom());
+ aCenterPos = Vector2D(aCenter);
+
+ // here the border correction is vice-versa to the others
+ bInnerOuterChanged = TRUE;
+
+ break;
+ }
+ case XGRAD_RADIAL :
+ {
+ // from bottom to center
+ aStartPos = Vector2D(aCenter.X(), aBoundRect.Bottom());
+ aEndPos = Vector2D(aCenter);
+ aCenterPos = Vector2D(aCenter);
+ bDoCorrectOffset = TRUE;
+ break;
+ }
+ case XGRAD_ELLIPTICAL :
+ case XGRAD_SQUARE :
+ case XGRAD_RECT :
+ {
+ // from bottom to center
+ aStartPos = Vector2D(aCenter.X(), aBoundRect.Bottom());
+ aEndPos = Vector2D(aCenter);
+ aCenterPos = Vector2D(aCenter);
+ bDoCorrectOffset = TRUE;
+ break;
+ }
+ }
+
+ // take in account border settings, this moves the start point
+ if(rG.aGradient.GetBorder())
+ {
+ Vector2D aFullVec;
+
+ if(bInnerOuterChanged)
+ aFullVec = aEndPos - aStartPos;
+ else
+ aFullVec = aStartPos - aEndPos;
+
+ double fLen = (aFullVec.GetLength() * (100.0 - (double)rG.aGradient.GetBorder())) / 100.0;
+ aFullVec.Normalize();
+ aFullVec *= fLen;
+
+ if(bInnerOuterChanged)
+ aEndPos = aStartPos + aFullVec;
+ else
+ aStartPos = aEndPos + aFullVec;
+ }
+
+ // take offset in account
+ if(bDoCorrectOffset)
+ {
+ if(rG.aGradient.GetXOffset() != 50 || rG.aGradient.GetYOffset() != 50)
+ {
+ // get scaling factors (with and without gradient rotation),
+ // center is the same
+ Rectangle aObjectBoundRect = pObj->GetBoundRect();
+ Vector2D aScale;
+ aScale.X() = ((double)aBoundRect.GetWidth() + 1.0) / ((double)aObjectBoundRect.GetWidth() + 1.0);
+ aScale.Y() = ((double)aBoundRect.GetHeight() + 1.0) / ((double)aObjectBoundRect.GetHeight() + 1.0);
+
+ // calc transformation from gradient system to object system
+ Matrix3D aTrans;
+ Vector2D aObjectCenter = Vector2D(aBoundRect.Center());
+ aTrans.Translate(-aObjectCenter);
+ aTrans.Scale(aScale);
+ aTrans.Rotate(-fObjectAngle);
+ aTrans.Translate(aObjectCenter);
+
+ // define coordinate system on top of ObjectBoundRect
+ Vector2D aAxisCenter(aObjectBoundRect.TopLeft());
+ Vector2D aXAxis(aObjectBoundRect.TopRight());
+ Vector2D aYAxis(aObjectBoundRect.BottomLeft());
+
+ // transform all to object system
+ aAxisCenter *= aTrans;
+ aXAxis *= aTrans;
+ aYAxis *= aTrans;
+ aXAxis -= aAxisCenter;
+ aYAxis -= aAxisCenter;
+
+ Vector2D aCorrectionVector(0,0);
+
+ if(rG.aGradient.GetXOffset() != 50)
+ aCorrectionVector += aXAxis * (((double)rG.aGradient.GetXOffset() - 50.0) / 100.0);
+
+ if(rG.aGradient.GetYOffset() != 50)
+ aCorrectionVector += aYAxis * (((double)rG.aGradient.GetYOffset() - 50.0) / 100.0);
+
+ aStartPos += aCorrectionVector;
+ aEndPos += aCorrectionVector;
+ aCenterPos += aCorrectionVector;
+ }
+ }
+
+ // rotate around fObjectAngle, go to rotated object coordinates
+ if(fObjectAngle || fGradientAngle)
+ {
+ Matrix3D aTrans;
+
+ aTrans.Translate(-aCenterPos);
+ aTrans.Rotate(-(fObjectAngle + fGradientAngle));
+ aTrans.Translate(aCenterPos);
+
+ aStartPos *= aTrans;
+ aEndPos *= aTrans;
+ }
+
+ // set values for vector positions now
+ rV.aPos1 = Point((INT32)(aStartPos.X() + 0.5), (INT32)(aStartPos.Y() + 0.5));
+ rV.aPos2 = Point((INT32)(aEndPos.X() + 0.5), (INT32)(aEndPos.Y() + 0.5));
+}
+
+//
+// vector to gradient representation
+//
+
+void GradTransformer::VecToGrad(GradTransVector& rV, GradTransGradient& rG, GradTransGradient& rGOld, const SdrObject* pObj, BOOL bMoveSingle, BOOL bMoveFirst)
+{
+ // copy old item to new item to have a valid base
+ rG = rGOld;
+
+ // on this base, create aVOld to have the previous values
+ // use full vector here (but rescue OldBorder)
+ GradTransVector aVOld;
+ UINT16 nOldBorder = rGOld.aGradient.GetBorder();
+ rGOld.aGradient.SetBorder(0);
+ GradToVec(rGOld, aVOld, pObj);
+ rGOld.aGradient.SetBorder(nOldBorder);
+
+ // color changes?
+ if(rV.aCol1 != rGOld.aGradient.GetStartColor())
+ {
+ rG.aGradient.SetStartColor(rV.aCol1);
+ rG.aGradient.SetStartIntens(100);
+ }
+
+ if(rV.aCol2 != rGOld.aGradient.GetEndColor())
+ {
+ rG.aGradient.SetEndColor(rV.aCol2);
+ rG.aGradient.SetEndIntens(100);
+ }
+
+ // back-rotate around aCenterPos with fGradientAngle and fObjectAngle
+ // to have the same conditions as above
+ aStartPos = Vector2D(rV.aPos1);
+ aEndPos = Vector2D(rV.aPos2);
+
+ // which points were moved? What needs to be done?
+ BOOL bRotAngleCheck(FALSE);
+ BOOL bCenterMoveCheck(FALSE);
+ BOOL bBorderMoveCheck(FALSE);
+ BOOL bRotAngleInvert(FALSE);
+
+ switch(rGOld.aGradient.GetGradientStyle())
+ {
+ case XGRAD_LINEAR :
+ {
+ bRotAngleCheck = bMoveSingle && !bMoveFirst;
+ bBorderMoveCheck = bMoveSingle && bMoveFirst;
+ break;
+ }
+ case XGRAD_AXIAL :
+ {
+ bRotAngleCheck = bMoveSingle && !bMoveFirst;
+ bBorderMoveCheck = bMoveSingle && !bMoveFirst;
+ break;
+ }
+ case XGRAD_RADIAL :
+ {
+ bBorderMoveCheck = bMoveSingle && bMoveFirst;
+ bCenterMoveCheck = (bMoveSingle && !bMoveFirst) || !bMoveSingle;
+ break;
+ }
+ case XGRAD_ELLIPTICAL :
+ case XGRAD_SQUARE :
+ case XGRAD_RECT :
+ {
+ bRotAngleCheck = bMoveSingle && bMoveFirst;
+ bBorderMoveCheck = bMoveSingle && bMoveFirst;
+ bCenterMoveCheck = (bMoveSingle && !bMoveFirst) || !bMoveSingle;
+ bRotAngleInvert = TRUE;
+ break;
+ }
+ }
+
+ // check for rotation angle change
+ if(bRotAngleCheck)
+ {
+ Vector2D aNewFullVec(aEndPos - aStartPos);
+
+ if(bRotAngleInvert)
+ aNewFullVec = -aNewFullVec;
+
+ double fNewFullAngle = atan2(aNewFullVec.Y(), aNewFullVec.X());
+ fNewFullAngle /= F_PI180;
+ fNewFullAngle *= -10.0;
+ fNewFullAngle += 900.0;
+
+ // correct object rotation
+ INT32 nObjRotateAngle = pObj->GetRotateAngle();
+ if(nObjRotateAngle)
+ fNewFullAngle -= (double)(nObjRotateAngle / 10);
+
+ while(fNewFullAngle < 0.0)
+ fNewFullAngle += 3600.0;
+
+ while(fNewFullAngle >= 3600.0)
+ fNewFullAngle -= 3600.0;
+
+ INT32 nNewAngle = (INT32)(fNewFullAngle + 0.5);
+
+ if(nNewAngle != rGOld.aGradient.GetAngle())
+ rG.aGradient.SetAngle(nNewAngle);
+ }
+
+ // check for border, move of the outer pixel
+ if(bBorderMoveCheck)
+ {
+ Vector2D aNewFullVec(aEndPos - aStartPos);
+ Vector2D aOldFullVec(Vector2D(aVOld.aPos2) - Vector2D(aVOld.aPos1));
+ double fNewFullLen = aNewFullVec.GetLength();
+ double fOldFullLen = aOldFullVec.GetLength();
+
+ double fNewBorder = (fNewFullLen * 100.0) / fOldFullLen;
+ INT32 nNewBorder = 100 - (INT32)(fNewBorder + 0.5);
+
+ if(nNewBorder < 0)
+ nNewBorder = 0;
+
+ if(nNewBorder > 100)
+ nNewBorder = 100;
+
+ if(nNewBorder != rG.aGradient.GetBorder())
+ {
+ rG.aGradient.SetBorder((UINT16)nNewBorder);
+ }
+ }
+
+ // move center if allowed, move of the inner pixel
+ if(bCenterMoveCheck)
+ {
+ // get scaling factors (with and without gradient rotation),
+ // center is the same
+ Rectangle aObjectBoundRect = pObj->GetBoundRect();
+ Vector2D aScale;
+ aScale.X() = ((double)aBoundRect.GetWidth() + 1.0) / ((double)aObjectBoundRect.GetWidth() + 1.0);
+ aScale.Y() = ((double)aBoundRect.GetHeight() + 1.0) / ((double)aObjectBoundRect.GetHeight() + 1.0);
+
+ // calc transformation from this system to gradient system
+ Matrix3D aTrans;
+ Vector2D aObjectCenter = Vector2D(aBoundRect.Center());
+ aTrans.Translate(-aObjectCenter);
+ aTrans.Scale(aScale);
+ aTrans.Rotate(-fObjectAngle);
+ aTrans.Translate(aObjectCenter);
+
+ // define coordinate system on top of ObjectBoundRect
+ Vector2D aAxisCenter(aObjectBoundRect.TopLeft());
+ Vector2D aXAxis(aObjectBoundRect.TopRight());
+ Vector2D aYAxis(aObjectBoundRect.BottomLeft());
+
+ // transform all to gradient system
+ aAxisCenter *= aTrans;
+ aXAxis *= aTrans;
+ aYAxis *= aTrans;
+ aXAxis -= aAxisCenter;
+ aYAxis -= aAxisCenter;
+
+ // build the normalized coordinate system
+ double fXAxisLen = aXAxis.GetLength();
+ double fYAxisLen = aYAxis.GetLength();
+ aXAxis.Normalize();
+ aYAxis.Normalize();
+
+ // calc part of new position in coordinate system
+ Vector2D aNewPos(aEndPos - aAxisCenter);
+ double fNewXAxisPart = aXAxis.Scalar(aNewPos);
+ double fNewYAxisPart = aYAxis.Scalar(aNewPos);
+ fNewXAxisPart = (fNewXAxisPart * 100.0) / fXAxisLen;
+ fNewYAxisPart = (fNewYAxisPart * 100.0) / fYAxisLen;
+ INT32 nNewX = (INT32)(fNewXAxisPart + 0.5);
+ INT32 nNewY = (INT32)(fNewYAxisPart + 0.5);
+
+ if(nNewX < 0)
+ nNewX = 0;
+
+ if(nNewX > 100)
+ nNewX = 100;
+
+ if(nNewY < 0)
+ nNewY = 0;
+
+ if(nNewY > 100)
+ nNewY = 100;
+
+ if(rGOld.aGradient.GetXOffset() != (UINT16)nNewX
+ || rGOld.aGradient.GetYOffset() != (UINT16)nNewY)
+ {
+ rG.aGradient.SetXOffset((UINT16)nNewX);
+ rG.aGradient.SetYOffset((UINT16)nNewY);
+ }
+ }
+}
+