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Diffstat (limited to 'svtools/source/filter.vcl/filter/gradwrap.cxx')
| -rw-r--r-- | svtools/source/filter.vcl/filter/gradwrap.cxx | 619 |
1 files changed, 619 insertions, 0 deletions
diff --git a/svtools/source/filter.vcl/filter/gradwrap.cxx b/svtools/source/filter.vcl/filter/gradwrap.cxx new file mode 100644 index 000000000000..d17c97e04074 --- /dev/null +++ b/svtools/source/filter.vcl/filter/gradwrap.cxx @@ -0,0 +1,619 @@ +/************************************************************************* + * + * $RCSfile: gradwrap.cxx,v $ + * + * $Revision: 1.1.1.1 $ + * + * last change: $Author: hr $ $Date: 2000-09-18 16:58:59 $ + * + * 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 <math.h> +#include <svgrad.hxx> +#include <svbmpacc.hxx> +#include <gradwrap.hxx> + +// ------------------- +// - GradientWrapper - +// ------------------- + +GradientWrapper::GradientWrapper(const Link& rDrawPolyRecordHdl, + const Link& rDrawPolyPolyRecordHdl, + const Link& rSetFillInBrushRecordHdl) : + aDrawPolyRecordHdl (rDrawPolyRecordHdl), + aDrawPolyPolyRecordHdl (rDrawPolyPolyRecordHdl), + aSetFillInBrushRecordHdl(rSetFillInBrushRecordHdl) +{ +} + +// ------------------------------------------------------------------------ + +GradientWrapper::~GradientWrapper() +{ +} + +// ------------------------------------------------------------------------ + +void GradientWrapper::WriteLinearGradient(const Rectangle& rRect, + const Gradient& rGradient) +{ + USHORT nStepCount = 100; + + Rectangle aRect = rRect; + aRect.Left()--; + aRect.Top()--; + aRect.Right()++; + aRect.Bottom()++; + + // rotiertes BoundRect ausrechnen + double fAngle = (rGradient.GetAngle() % 3600) * F_PI1800; + double fWidth = aRect.GetWidth(); + double fHeight = aRect.GetHeight(); + double fDX = fWidth * fabs( cos( fAngle ) ) + + fHeight * fabs( sin( fAngle ) ); + double fDY = fHeight * fabs( cos( fAngle ) ) + + fWidth * fabs( sin( fAngle ) ); + fDX = (fDX - fWidth) * 0.5 + 0.5; + fDY = (fDY - fHeight) * 0.5 + 0.5; + aRect.Left() -= (long)fDX; + aRect.Right() += (long)fDX; + aRect.Top() -= (long)fDY; + aRect.Bottom() += (long)fDY; + + // Rand berechnen und Rechteck neu setzen + Point aCenter = rRect.Center(); + Rectangle aFullRect = aRect; + long nBorder = (long)rGradient.GetBorder() * aRect.GetHeight() / 100; + BOOL bLinear; + + // Rand berechnen und Rechteck neu setzen fuer linearen Farbverlauf + if ( rGradient.GetStyle() == GRADIENT_LINEAR ) + { + bLinear = TRUE; + aRect.Top() += nBorder; + } + // Rand berechnen und Rechteck neu setzen fuer axiale Farbverlauf + else + { + bLinear = FALSE; + nBorder >>= 1; + + aRect.Top() += nBorder; + aRect.Bottom() -= nBorder; + } + + // Top darf nicht groesser als Bottom sein + aRect.Top() = Min( aRect.Top(), (long)(aRect.Bottom() - 1) ); + + long nMinRect = aRect.GetHeight(); + + // Anzahl der Schritte berechnen, falls nichts uebergeben wurde + if ( !nStepCount ) + { + long nInc = ((nMinRect >> 9) + 1) << 3; + + if ( !nInc ) + nInc = 1; + + nStepCount = (USHORT)(nMinRect / nInc); + } + // minimal drei Schritte + long nSteps = Max( nStepCount, (USHORT)3 ); + + // Falls axialer Farbverlauf, muss die Schrittanzahl ungerade sein + if ( !bLinear && !(nSteps & 1) ) + nSteps++; + + // Berechnung ueber Double-Addition wegen Genauigkeit + double fScanLine = aRect.Top(); + double fScanInc = (double)aRect.GetHeight() / (double)nSteps; + + // Intensitaeten von Start- und Endfarbe ggf. aendern und + // Farbschrittweiten berechnen + long nFactor; + const Color& rStartCol = rGradient.GetStartColor(); + const Color& rEndCol = rGradient.GetEndColor(); + long nRed = rStartCol.GetRed(); + long nGreen = rStartCol.GetGreen(); + long nBlue = rStartCol.GetBlue(); + long nEndRed = rEndCol.GetRed(); + long nEndGreen = rEndCol.GetGreen(); + long nEndBlue = rEndCol.GetBlue(); + nFactor = rGradient.GetStartIntensity(); + nRed = (nRed * nFactor) / 100; + nGreen = (nGreen * nFactor) / 100; + nBlue = (nBlue * nFactor) / 100; + nFactor = rGradient.GetEndIntensity(); + nEndRed = (nEndRed * nFactor) / 100; + nEndGreen = (nEndGreen * nFactor) / 100; + nEndBlue = (nEndBlue * nFactor) / 100; + long nStepRed = (nEndRed - nRed) / nSteps; + long nStepGreen = (nEndGreen - nGreen) / nSteps; + long nStepBlue = (nEndBlue - nBlue) / nSteps; + long nSteps2; + + if ( bLinear ) + { + // Um 1 erhoeht, um die Border innerhalb der Schleife + // zeichnen zu koennen + nSteps2 = nSteps + 1; + } + else + { + nStepRed <<= 1; + nStepGreen <<= 1; + nStepBlue <<= 1; + nRed = nEndRed; + nGreen = nEndGreen; + nBlue = nEndBlue; + + // Um 2 erhoeht, um die Border innerhalb der Schleife + // zeichnen zu koennen + nSteps2 = nSteps + 2; + } + Color aCol( (BYTE) nRed, (BYTE) nGreen, (BYTE) nBlue ); + + // GDI-Objekte sichern und setzen + Brush aBrush( aCol ); + aSetFillInBrushRecordHdl.Call(&aBrush); + + // Startpolygon erzeugen (== Borderpolygon) + Polygon aPoly( 4 ); + Polygon aTempPoly( 2 ); + aPoly[0] = aFullRect.TopLeft(); + aPoly[1] = aFullRect.TopRight(); + aPoly[2] = aRect.TopRight(); + aPoly[3] = aRect.TopLeft(); + aPoly.Rotate( aCenter, rGradient.GetAngle() ); + + // Schleife, um rotierten Verlauf zu fuellen + for ( long i = 0; i < nSteps2; i++ ) + { + Polygon aTempPoly = aPoly; + aTempPoly.Clip( rRect ); + aDrawPolyRecordHdl.Call(&aTempPoly); + aTempPoly.SetSize( 2 ); + + // neues Polygon berechnen + aRect.Top() = (long)(fScanLine += fScanInc); + + // unteren Rand komplett fuellen + if ( i == nSteps ) + { + aTempPoly[0] = aFullRect.BottomLeft(); + aTempPoly[1] = aFullRect.BottomRight(); + } + else + { + aTempPoly[0] = aRect.TopLeft(); + aTempPoly[1] = aRect.TopRight(); + } + aTempPoly.Rotate( aCenter, rGradient.GetAngle() ); + + aPoly[0] = aPoly[3]; + aPoly[1] = aPoly[2]; + aPoly[2] = aTempPoly[1]; + aPoly[3] = aTempPoly[0]; + + // Farbintensitaeten aendern... + // fuer lineare FV + if ( bLinear ) + { + nRed += nStepRed; + nGreen += nStepGreen; + nBlue += nStepBlue; + } + // fuer radiale FV + else + { + if ( i <= (nSteps >> 1) ) + { + nRed -= nStepRed; + nGreen -= nStepGreen; + nBlue -= nStepBlue; + } + // genau die Mitte und hoeher + else + { + nRed += nStepRed; + nGreen += nStepGreen; + nBlue += nStepBlue; + } + } + + nRed = MinMax( nRed, 0, 255 ); + nGreen = MinMax( nGreen, 0, 255 ); + nBlue = MinMax( nBlue, 0, 255 ); + + // fuer lineare FV ganz normale Bestimmung der Farbe + if ( bLinear || (i <= nSteps) ) + { + aCol = Color( (BYTE) nRed, (BYTE) nGreen, (BYTE) nBlue ); + } + // fuer axiale FV muss die letzte Farbe der ersten + // Farbe entsprechen + else + { + aCol = Color( (BYTE) nEndRed, (BYTE) nEndGreen, (BYTE) nEndBlue ); + } + + aBrush.SetColor(aCol); + aSetFillInBrushRecordHdl.Call(&aBrush); + } +} + +// ------------------------------------------------------------------------ + +void GradientWrapper::WriteRadialGradient(const Rectangle& rRect, + const Gradient& rGradient) +{ + USHORT nStepCount = 100; + Rectangle aClipRect = rRect; + Rectangle aRect = rRect; + long nZWidth = aRect.GetWidth() * (long)rGradient.GetOfsX() / 100; + long nZHeight= aRect.GetHeight() * (long)rGradient.GetOfsY() / 100; + Size aSize = aRect.GetSize(); + Point aCenter( aRect.Left() + nZWidth, aRect.Top() + nZHeight ); + + // Radien-Berechnung fuer Kreisausgabe (Kreis schliesst Rechteck ein) + if ( rGradient.GetStyle() == GRADIENT_RADIAL ) + { + aSize.Width() = (long)(0.5 + sqrt((double)aSize.Width()*(double)aSize.Width() + + (double)aSize.Height()*(double)aSize.Height())); + aSize.Height() = aSize.Width(); + } + // Radien-Berechnung fuer Ellipse + else + { + aSize.Width() = (long)(0.5 + (double)aSize.Width() * 1.4142); + aSize.Height() = (long)(0.5 + (double)aSize.Height() * 1.4142); + } + + long nBorderX = (long)rGradient.GetBorder() * aSize.Width() / 100; + long nBorderY = (long)rGradient.GetBorder() * aSize.Height() / 100; + aSize.Width() -= nBorderX; + aSize.Height() -= nBorderY; + aRect.Left() = aCenter.X() - (aSize.Width() >> 1); + aRect.Top() = aCenter.Y() - (aSize.Height() >> 1); + aRect.SetSize( aSize ); + + long nMinRect = Min( aRect.GetWidth(), aRect.GetHeight() ); + + // Anzahl der Schritte berechnen, falls nichts uebergeben wurde + if ( !nStepCount ) + { + long nInc = ((nMinRect >> 9) + 1) << 3; + + if ( !nInc ) + nInc = 1; + + nStepCount = (USHORT)(nMinRect / nInc); + } + // minimal drei Schritte + long nSteps = Max( nStepCount, (USHORT)3 ); + + // Ausgabebegrenzungen und Schrittweite fuer jede Richtung festlegen + double fScanLeft = aRect.Left(); + double fScanTop = aRect.Top(); + double fScanRight = aRect.Right(); + double fScanBottom = aRect.Bottom(); + double fScanInc = (double)nMinRect / (double)nSteps * 0.5; + + // Intensitaeten von Start- und Endfarbe ggf. aendern und + // Farbschrittweiten berechnen + long nFactor; + const Color& rStartCol = rGradient.GetStartColor(); + const Color& rEndCol = rGradient.GetEndColor(); + long nRed = rStartCol.GetRed(); + long nGreen = rStartCol.GetGreen(); + long nBlue = rStartCol.GetBlue(); + long nEndRed = rEndCol.GetRed(); + long nEndGreen = rEndCol.GetGreen(); + long nEndBlue = rEndCol.GetBlue(); + nFactor = rGradient.GetStartIntensity(); + nRed = (nRed * nFactor) / 100; + nGreen = (nGreen * nFactor) / 100; + nBlue = (nBlue * nFactor) / 100; + nFactor = rGradient.GetEndIntensity(); + nEndRed = (nEndRed * nFactor) / 100; + nEndGreen = (nEndGreen * nFactor) / 100; + nEndBlue = (nEndBlue * nFactor) / 100; + long nStepRed = (nEndRed - nRed) / nSteps; + long nStepGreen = (nEndGreen - nGreen) / nSteps; + long nStepBlue = (nEndBlue - nBlue) / nSteps; + Color aCol( (BYTE) nRed, (BYTE) nGreen, (BYTE) nBlue ); + + // GDI-Objekte sichern und setzen + Brush aBrush( aCol ); + aSetFillInBrushRecordHdl.Call(&aBrush); + + // Recteck erstmal ausgeben + PolyPolygon aPolyPoly( 2 ); + Polygon aPoly( rRect ); + + aPolyPoly.Insert( aPoly ); + aPoly = Polygon( aRect ); + aPoly.Rotate( aCenter, rGradient.GetAngle() ); + aPolyPoly.Insert( aPoly ); + + // erstes Polygon zeichnen (entspricht Rechteck) + PolyPolygon aTempPolyPoly = aPolyPoly; + aTempPolyPoly.Clip( aClipRect ); + aDrawPolyPolyRecordHdl.Call(&aTempPolyPoly); + + for ( long i = 0; i < nSteps; i++ ) + { + Color aCol( (BYTE) nRed, (BYTE) nGreen, (BYTE) nBlue ); + aBrush.SetColor( aCol ); + aSetFillInBrushRecordHdl.Call(&aBrush); + + // neues Polygon berechnen + aRect.Left() = (long)(fScanLeft += fScanInc); + aRect.Top() = (long)(fScanTop += fScanInc); + aRect.Right() = (long)(fScanRight -= fScanInc); + aRect.Bottom() = (long)(fScanBottom -= fScanInc); + + if ( (aRect.GetWidth() < 2) || (aRect.GetHeight() < 2) ) + break; + + aPoly = Polygon( aRect.Center(), + aRect.GetWidth() >> 1, aRect.GetHeight() >> 1 ); + aPoly.Rotate( aCenter, rGradient.GetAngle() ); + + aPolyPoly.Replace( aPolyPoly.GetObject( 1 ), 0 ); + aPolyPoly.Replace( aPoly, 1 ); + + PolyPolygon aTempPolyPoly = aPolyPoly; + aTempPolyPoly.Clip( aClipRect ); + aDrawPolyPolyRecordHdl.Call(&aTempPolyPoly); + + // Farbe entsprechend anpassen + nRed += nStepRed; + nGreen += nStepGreen; + nBlue += nStepBlue; + +#ifndef VCL + nRed = MinMax( nRed, 0, 0xFFFF ); + nGreen = MinMax( nGreen, 0, 0xFFFF ); + nBlue = MinMax( nBlue, 0, 0xFFFF ); +#else + nRed = MinMax( nRed, 0, 0xFF ); + nGreen = MinMax( nGreen, 0, 0xFF ); + nBlue = MinMax( nBlue, 0, 0xFF ); +#endif + } + + // Falls PolyPolygon-Ausgabe, muessen wir noch ein letztes + // inneres Polygon zeichnen + aBrush.SetColor( Color( (BYTE) nRed, (BYTE) nGreen, (BYTE) nBlue ) ); + aSetFillInBrushRecordHdl.Call(&aBrush); + + aPoly = aPolyPoly.GetObject( 1 ); + if ( !aPoly.GetBoundRect().IsEmpty() ) + { + aPoly.Clip( aClipRect ); + aDrawPolyRecordHdl.Call(&aPoly); + } +} + +// ------------------------------------------------------------------------ + +void GradientWrapper::WriteRectGradient(const Rectangle& rRect, + const Gradient& rGradient) +{ + USHORT nStepCount = 100; + Rectangle aClipRect = rRect; + Rectangle aRect = rRect; + + aRect.Left()--; + aRect.Top()--; + aRect.Right()++; + aRect.Bottom()++; + + // rotiertes BoundRect ausrechnen + double fAngle = (rGradient.GetAngle() % 3600) * F_PI1800; + double fWidth = aRect.GetWidth(); + double fHeight = aRect.GetHeight(); + double fDX = fWidth * fabs( cos( fAngle ) ) + + fHeight * fabs( sin( fAngle ) ); + double fDY = fHeight * fabs( cos( fAngle ) ) + + fWidth * fabs( sin( fAngle ) ); + fDX = (fDX - fWidth) * 0.5 + 0.5; + fDY = (fDY - fHeight) * 0.5 + 0.5; + aRect.Left() -= (long)fDX; + aRect.Right() += (long)fDX; + aRect.Top() -= (long)fDY; + aRect.Bottom() += (long)fDY; + + // Quadratisch machen, wenn angefordert; + Size aSize = aRect.GetSize(); + if ( rGradient.GetStyle() == GRADIENT_SQUARE ) + { + if ( aSize.Width() > aSize.Height() ) + aSize.Height() = aSize.Width(); + else + aSize.Width() = aSize.Height(); + } + + // neue Mittelpunkte berechnen + long nZWidth = aRect.GetWidth() * (long)rGradient.GetOfsX() / 100; + long nZHeight = aRect.GetHeight() * (long)rGradient.GetOfsY() / 100; + long nBorderX = (long)rGradient.GetBorder() * aSize.Width() / 100; + long nBorderY = (long)rGradient.GetBorder() * aSize.Height() / 100; + Point aCenter( aRect.Left() + nZWidth, aRect.Top() + nZHeight ); + + // Rand beruecksichtigen + aSize.Width() -= nBorderX; + aSize.Height() -= nBorderY; + + // Ausgaberechteck neu setzen + aRect.Left() = aCenter.X() - (aSize.Width() >> 1); + aRect.Top() = aCenter.Y() - (aSize.Height() >> 1); + aRect.SetSize( aSize ); + + long nMinRect = Min( aRect.GetWidth(), aRect.GetHeight() ); + + // Anzahl der Schritte berechnen, falls nichts uebergeben wurde + if ( !nStepCount ) + { + long nInc = ((nMinRect >> 9) + 1) << 3; + + if ( !nInc ) + nInc = 1; + + nStepCount = (USHORT)(nMinRect / nInc); + } + // minimal drei Schritte + long nSteps = Max( nStepCount, (USHORT)3 ); + + // Ausgabebegrenzungen und Schrittweite fuer jede Richtung festlegen + double fScanLeft = aRect.Left(); + double fScanTop = aRect.Top(); + double fScanRight = aRect.Right(); + double fScanBottom = aRect.Bottom(); + double fScanInc = (double)nMinRect / (double)nSteps * 0.5; + + // Intensitaeten von Start- und Endfarbe ggf. aendern und + // Farbschrittweiten berechnen + long nFactor; + const Color& rStartCol = rGradient.GetStartColor(); + const Color& rEndCol = rGradient.GetEndColor(); + long nRed = rStartCol.GetRed(); + long nGreen = rStartCol.GetGreen(); + long nBlue = rStartCol.GetBlue(); + long nEndRed = rEndCol.GetRed(); + long nEndGreen = rEndCol.GetGreen(); + long nEndBlue = rEndCol.GetBlue(); + nFactor = rGradient.GetStartIntensity(); + nRed = (nRed * nFactor) / 100; + nGreen = (nGreen * nFactor) / 100; + nBlue = (nBlue * nFactor) / 100; + nFactor = rGradient.GetEndIntensity(); + nEndRed = (nEndRed * nFactor) / 100; + nEndGreen = (nEndGreen * nFactor) / 100; + nEndBlue = (nEndBlue * nFactor) / 100; + long nStepRed = (nEndRed - nRed) / nSteps; + long nStepGreen = (nEndGreen - nGreen) / nSteps; + long nStepBlue = (nEndBlue - nBlue) / nSteps; + Color aCol( (BYTE) nRed, (BYTE) nGreen, (BYTE) nBlue ); + + // GDI-Objekte sichern und setzen + Brush aBrush( aCol ); + aSetFillInBrushRecordHdl.Call(&aBrush); + + // Recteck erstmal ausgeben + PolyPolygon aPolyPoly( 2 ); + Polygon aPoly( rRect ); + + aPolyPoly.Insert( aPoly ); + aPoly = Polygon( aRect ); + aPoly.Rotate( aCenter, rGradient.GetAngle() ); + aPolyPoly.Insert( aPoly ); + + PolyPolygon aTempPolyPoly = aPolyPoly; + aTempPolyPoly.Clip( aClipRect ); + aDrawPolyPolyRecordHdl.Call(&aTempPolyPoly); + + // Schleife, um nacheinander die Polygone/PolyPolygone auszugeben + for ( long i = 0; i < nSteps; i++ ) + { + Color aCol( (BYTE) nRed, (BYTE) nGreen, (BYTE) nBlue ); + aBrush.SetColor( aCol ); + aSetFillInBrushRecordHdl.Call(&aBrush); + + // neues Polygon berechnen + aRect.Left() = (long)(fScanLeft += fScanInc); + aRect.Top() = (long)(fScanTop += fScanInc); + aRect.Right() = (long)(fScanRight -= fScanInc); + aRect.Bottom() = (long)(fScanBottom-= fScanInc); + + if ( (aRect.GetWidth() < 2) || (aRect.GetHeight() < 2) ) + break; + + aPoly = Polygon( aRect ); + aPoly.Rotate( aCenter, rGradient.GetAngle() ); + + aPolyPoly.Replace( aPolyPoly.GetObject( 1 ), 0 ); + aPolyPoly.Replace( aPoly, 1 ); + + PolyPolygon aTempPolyPoly = aPolyPoly; + aTempPolyPoly.Clip( aClipRect ); + aDrawPolyPolyRecordHdl.Call(&aTempPolyPoly); + + // Farben aendern + nRed += nStepRed; + nGreen += nStepGreen; + nBlue += nStepBlue; + +#ifndef VCL + nRed = MinMax( nRed, 0, 65535 ); + nGreen = MinMax( nGreen, 0, 65535 ); + nBlue = MinMax( nBlue, 0, 65535 ); +#else + nRed = MinMax( nRed, 0, 0xFF ); + nGreen = MinMax( nGreen, 0, 0xFF ); + nBlue = MinMax( nBlue, 0, 0xFF ); +#endif + } + + aBrush.SetColor( Color( (BYTE) nRed, (BYTE) nGreen, (BYTE) nBlue ) ); + aSetFillInBrushRecordHdl.Call(&aBrush); + + aPoly = aPolyPoly.GetObject( 1 ); + if ( !aPoly.GetBoundRect().IsEmpty() ) + { + aPoly.Clip( aClipRect ); + aDrawPolyRecordHdl.Call(&aPoly); + } +} |