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INTEGRATION: CWS cellborders (1.1.4); FILE ADDED 

2004/05/27 14:39:18 fme 1.1.4.1: #i29552# Collapsing table borders
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/*************************************************************************
*
* $RCSfile: framelink.cxx,v $
*
* $Revision: 1.2 $
*
* last change: $Author: rt $ $Date: 2004-07-12 13:46:55 $
*
* 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): _______________________________________
*
*
************************************************************************/
#ifndef SVX_FRAMELINK_HXX
#include "framelink.hxx"
#endif
#include <math.h>
#ifndef _SV_OUTDEV_HXX
#include <vcl/outdev.hxx>
#endif
#ifndef SVX_BORDERLINE_HXX
#include "borderline.hxx"
#endif
// ----------------------------------------------------------------------------
/** Define to select the drawing mode of thin dotted lines.
0 = Draw lines using an own implementation (recommended). Draws always
little dots in an appropriate distance.
1 = Draw dotted lines using vcl/LineInfo. Results in dashed lines instead
of dotted lines, which may look ugly for diagonal lines.
*/
#define SVX_FRAME_USE_LINEINFO 0
// ----------------------------------------------------------------------------
#if SVX_FRAME_USE_LINEINFO
#ifndef _SV_LINEINFO_HXX
#include <vcl/lineinfo.hxx>
#endif
#endif
namespace svx {
namespace frame {
// ============================================================================
// ============================================================================
namespace {
typedef std::vector< Point > PointVec;
// ----------------------------------------------------------------------------
// Link result structs for horizontal and vertical lines and borders.
/** Result struct used by the horizontal/vertical frame link functions.
This struct is used to return coordinate offsets for one end of a single
line in a frame border, i.e. the left end of the primary line of a
horizontal frame border.
1) Usage for horizontal lines
If this struct is returned by the lclLinkHorFrameBorder() function, each
member refers to the X coordinate of one edge of a single line end in a
horizontal frame border. They specify an offset to modify this coordinate
when the line is painted. The values in this struct may change a
rectangular line shape into a line with slanted left or right border, which
is used to connect the line with diagonal lines.
Usage for a left line end: Usage for a right line end:
mnOffs1 mnOffs1
<-------> <------->
+-------------------------------+
| the original horizontal line |
+-------------------------------+
<-------> <------->
mnOffs2 mnOffs2
2) Usage for vertical lines
If this struct is returned by the lclLinkVerFrameBorder() function, each
member refers to the Y coordinate of one edge of a single line end in a
vertical frame border. They specify an offset to modify this coordinate
when the line is painted. The values in this struct may change a
rectangular line shape into a line with slanted top or bottom border, which
is used to connect the line with diagonal lines.
Usage for a top line end: mnOffs1 ^ ^ mnOffs2
| +-------+ |
v | | v
| |
| |
the original vertical line ---> | |
| |
| |
^ | | ^
| +-------+ |
Usage for a bottom line end: mnOffs1 v v mnOffs2
*/
struct LineEndResult
{
long mnOffs1; /// Offset for top or left edge, dependent of context.
long mnOffs2; /// Offset for bottom or right edge, dependent of context
inline explicit LineEndResult() : mnOffs1( 0 ), mnOffs2( 0 ) {}
inline void Swap() { std::swap( mnOffs1, mnOffs2 ); }
inline void Negate() { mnOffs1 = -mnOffs1; mnOffs2 = -mnOffs2; }
};
/** Result struct used by the horizontal/vertical frame link functions.
This struct contains the linking results for one end of a frame border,
including both the primary and secondary line ends.
*/
struct BorderEndResult
{
LineEndResult maPrim; /// Result for primary line.
LineEndResult maSecn; /// Result for secondary line.
inline void Negate() { maPrim.Negate(); maSecn.Negate(); }
};
/** Result struct used by the horizontal/vertical frame link functions.
This struct contains the linking results for both frame border ends, and
therefore for the complete frame border.
*/
struct BorderResult
{
BorderEndResult maBeg; /// Result for begin of border line (left or top end).
BorderEndResult maEnd; /// Result for end of border line (right or bottom end).
};
// ----------------------------------------------------------------------------
// Link result structs for diagonal lines and borders.
/** Result struct used by the diagonal frame link functions.
This struct contains the linking results for one line of a diagonal frame
border.
*/
struct DiagLineResult
{
long mnLClip; /// Offset for left border of clipping rectangle.
long mnRClip; /// Offset for right border of clipping rectangle.
long mnTClip; /// Offset for top border of clipping rectangle.
long mnBClip; /// Offset for bottom border of clipping rectangle.
inline explicit DiagLineResult() : mnLClip( 0 ), mnRClip( 0 ), mnTClip( 0 ), mnBClip( 0 ) {}
};
/** Result struct used by the diagonal frame link functions.
This struct contains the linking results for one diagonal frame border.
*/
struct DiagBorderResult
{
DiagLineResult maPrim; /// Result for primary line.
DiagLineResult maSecn; /// Result for secondary line.
};
/** Result struct used by the diagonal frame link functions.
This struct contains the linking results for both diagonal frame borders.
*/
struct DiagBordersResult
{
DiagBorderResult maTLBR; /// Result for top-left to bottom-right frame border.
DiagBorderResult maBLTR; /// Result for bottom-left to top-right frame border.
};
// ----------------------------------------------------------------------------
/** A helper struct containing two points of a line.
*/
struct LinePoints
{
Point maBeg; /// Start position of the line.
Point maEnd; /// End position of the line.
explicit LinePoints( const Point& rBeg, const Point& rEnd ) :
maBeg( rBeg ), maEnd( rEnd ) {}
explicit LinePoints( const Rectangle& rRect, bool bTLBR ) :
maBeg( bTLBR ? rRect.TopLeft() : rRect.TopRight() ),
maEnd( bTLBR ? rRect.BottomRight() : rRect.BottomLeft() ) {}
};
// ============================================================================
/** Rounds and casts a double value to a long value. */
inline long lclD2L( double fValue )
{
return static_cast< long >( (fValue < 0.0) ? (fValue - 0.5) : (fValue + 0.5) );
}
/** Converts a width in twips to a width in another map unit (specified by fScale). */
sal_uInt16 lclScaleValue( long nValue, double fScale, sal_uInt16 nMaxWidth )
{
// convert any width except 0 to at least 1 unit
return nValue ? static_cast< sal_uInt16 >( std::min< long >( std::max(
static_cast< long >( nValue * fScale + 0.25 ), 1L ), nMaxWidth ) ) : 0;
}
// ----------------------------------------------------------------------------
// Line width offset calculation.
/** Returns the start offset of the single/primary line across the frame border.
All following lclGet*Beg() and lclGet*End() functions return sub units to
increase the computational accuracy, where 256 sub units are equal to
1 map unit of the used OutputDevice.
The following pictures show the upper end of a vertical frame border and
illustrates the return values of all following lclGet*Beg() and lclGet*End()
functions. The first picture shows a single frame border, the second picture
shows a double frame border.
The functions regard the reference point handling mode of the passed border
style.
REFMODE_CENTERED:
All returned offsets are relative to the middle position of the frame
border (offsets left of the middle are returned negative, offsets right
of the middle are returned positive).
REFMODE_BEGIN:
All returned offsets are relative to the begin of the frame border
(lclGetBeg() always returns 0).
REFMODE_END:
All returned offsets are relative to the end of the frame border
(lclGetEnd() always returns 0).
|<- lclGetEnd()
|<- lclGetBeforeBeg() |<- lclGetPrimEnd()
| |
||<- lclGetBeg() ||<- lclGetBehindEnd()
|| ||
|#################################|
direction of | #################################
the frame | #################################
border is | #################################
vertical | #################################
v #################################
|
|<- middle of the frame border
lclGetDistEnd() ->||<- lclGetSecnBeg()
||
lclGetBeg() ->| lclGetDistBeg() ->| || |<- lclGetEnd()
| | || |
lclGetBeforeBeg()->|| lclGetPrimEnd() ->|| || ||<- lclGetBehindEnd()
|| || || ||
|######################| |#############|
direction of | ###################### #############
the frame | ###################### #############
border is | ###################### #############
vertical | ###################### | #############
v ###################### | #############
primary line | secondary line
|
|<- middle of the frame border
@return
The start offset of the single/primary line relative to the reference
position of the frame border (sub units; 0 for invisible or one pixel
wide single frame styles).
*/
long lclGetBeg( const Style& rBorder )
{
long nPos = 0;
switch( rBorder.GetRefMode() )
{
case REFMODE_CENTERED: if( rBorder.Prim() ) nPos = -128 * (rBorder.GetWidth() - 1); break;
case REFMODE_END: if( rBorder.Prim() ) nPos = -256 * (rBorder.GetWidth() - 1); break;
}
return nPos;
}
/** Returns the end offset of the single/secondary line across the frame border.
@descr See description of lclGetBeg() for an illustration.
@return The end offset of the single/secondary line relative to the
reference position of the frame border (sub units; 0 for invisible or one
pixel wide single frame styles). */
long lclGetEnd( const Style& rBorder )
{
long nPos = 0;
switch( rBorder.GetRefMode() )
{
case REFMODE_CENTERED: if( rBorder.Prim() ) nPos = 128 * (rBorder.GetWidth() - 1); break;
case REFMODE_BEGIN: if( rBorder.Prim() ) nPos = 256 * (rBorder.GetWidth() - 1); break;
}
return nPos;
}
/** Returns the end offset of the primary line across the frame border.
@descr See description of lclGetBeg() for an illustration.
@return The end offset of the primary line relative to the reference
position of the frame border (sub units; the end of the primary line in a
double frame style, otherwise the same as lclGetEnd()). */
inline long lclGetPrimEnd( const Style& rBorder )
{ return rBorder.Prim() ? (lclGetBeg( rBorder ) + 256 * (rBorder.Prim() - 1)) : 0; }
/** Returns the start offset of the secondary line across the frame border.
@descr See description of lclGetBeg() for an illustration.
@return The start offset of the secondary line relative to the reference
position of the frame border (sub units; 0 for single/invisible border
styles). */
inline long lclGetSecnBeg( const Style& rBorder )
{ return rBorder.Secn() ? (lclGetEnd( rBorder ) - 256 * (rBorder.Secn() - 1)) : 0; }
/** Returns the start offset of the distance space across the frame border.
@descr See description of lclGetBeg() for an illustration.
@return The start offset of the distance space relative to the reference
position of the frame border (sub units; 0 for single/invisible border
styles). */
inline long lclGetDistBeg( const Style& rBorder )
{ return rBorder.Secn() ? (lclGetBeg( rBorder ) + 256 * rBorder.Prim()) : 0; }
/** Returns the end offset of the distance space across the frame border.
@descr See description of lclGetBeg() for an illustration.
@return The end offset of the distance space relative to the reference
position of the frame border (sub units; 0 for single/invisible border
styles). */
inline long lclGetDistEnd( const Style& rBorder )
{ return rBorder.Secn() ? (lclGetEnd( rBorder ) - 256 * rBorder.Secn()) : 0; }
/** Returns the offset before start of single/primary line across the frame border.
@descr See description of lclGetBeg() for an illustration.
@return The offset directly before start of single/primary line relative
to the reference position of the frame border (sub units; a value one less
than lclGetBeg() for visible frame styles, or 0 for invisible frame style). */
inline long lclGetBeforeBeg( const Style& rBorder )
{ return rBorder.Prim() ? (lclGetBeg( rBorder ) - 256) : 0; }
/** Returns the offset behind end of single/secondary line across the frame border.
@descr See description of lclGetBeg() for an illustration.
@return The offset directly behind end of single/secondary line relative
to the reference position of the frame border (sub units; a value one
greater than lclGetEnd() for visible frame styles, or 0 for invisible frame
style). */
inline long lclGetBehindEnd( const Style& rBorder )
{ return rBorder.Prim() ? (lclGetEnd( rBorder ) + 256) : 0; }
// ============================================================================
// Linking functions
// ============================================================================
// ----------------------------------------------------------------------------
// Linking of single horizontal line ends.
/** Calculates X offsets for the left end of a single horizontal frame border.
See DrawHorFrameBorder() function for a description of all parameters.
@param rResult
(out-param) The contained values (sub units) specify offsets for the
X coordinates of the left line end.
*/
void lclLinkLeftEnd_Single(
LineEndResult& rResult, const Style& rBorder,
const DiagStyle& rLFromTR, const Style& rLFromT, const Style& rLFromL, const Style& rLFromB, const DiagStyle& rLFromBR )
{
// both vertical and diagonal frame borders are double
if( rLFromT.Secn() && rLFromB.Secn() && rLFromTR.Secn() && rLFromBR.Secn() )
{
// take left position of upper and lower secondary start
rResult.mnOffs1 = GetBLDiagOffset( lclGetBeg( rBorder ), lclGetSecnBeg( rLFromTR ), rLFromTR.GetAngle() );
rResult.mnOffs2 = GetTLDiagOffset( lclGetEnd( rBorder ), lclGetSecnBeg( rLFromBR ), rLFromBR.GetAngle() );
}
else
{
// both vertical frame borders are double
if( rLFromT.Secn() && rLFromB.Secn() )
rResult.mnOffs1 = (!rLFromTR.Secn() && !rLFromBR.Secn() && (rLFromT.GetWidth() == rLFromB.GetWidth())) ?
// don't overdraw vertical borders with equal width
lclGetBehindEnd( rLFromT ) :
// take leftmost start of both secondary lines (#46488#)
rResult.mnOffs1 = std::min( lclGetSecnBeg( rLFromT ), lclGetSecnBeg( rLFromB ) );
// single border with equal width coming from left
else if( !rLFromL.Secn() && (rLFromL.Prim() == rBorder.Prim()) )
// draw to connection point
rResult.mnOffs1 = 0;
// single border coming from left
else if( !rLFromL.Secn() && rLFromL.Prim() )
{
if( rLFromL.Prim() == rBorder.Prim() )
// draw to reference position, if from left has equal width
rResult.mnOffs1 = 0;
else
rResult.mnOffs1 = (rLFromL < rBorder) ?
// take leftmost start of both frame borders, if from left is thinner
std::min( lclGetBeg( rLFromT ), lclGetBeg( rLFromB ) ) :
// do not overdraw vertical, if from left is thicker
std::max( lclGetBehindEnd( rLFromT ), lclGetBehindEnd( rLFromB ) );
}
// no border coming from left
else if( !rLFromL.Prim() )
// don't overdraw vertical borders with equal width
rResult.mnOffs1 = (rLFromT.GetWidth() == rLFromB.GetWidth()) ?
lclGetBehindEnd( rLFromT ) :
std::min( lclGetBeg( rLFromT ), lclGetBeg( rLFromB ) );
// double frame border coming from left and from top
else if( rLFromT.Secn() )
// do not overdraw the vertical double frame border
rResult.mnOffs1 = lclGetBehindEnd( rLFromT );
// double frame border coming from left and from bottom
else if( rLFromB.Secn() )
// do not overdraw the vertical double frame border
rResult.mnOffs1 = lclGetBehindEnd( rLFromB );
// double frame border coming from left, both vertical frame borders are single or off
else
// draw from leftmost start of both frame borders, if from left is not thicker
rResult.mnOffs1 = (rLFromL <= rBorder) ?
std::min( lclGetBeg( rLFromT ), lclGetBeg( rLFromB ) ) :
std::max( lclGetBehindEnd( rLFromT ), lclGetBehindEnd( rLFromB ) );
// bottom-left point is equal to top-left point (results in rectangle)
rResult.mnOffs2 = rResult.mnOffs1;
}
}
/** Calculates X offsets for the left end of a primary horizontal line.
See DrawHorFrameBorder() function for a description of all parameters.
@param rResult
(out-param) The contained values (sub units) specify offsets for the
X coordinates of the left end of the primary line.
*/
void lclLinkLeftEnd_Prim(
LineEndResult& rResult, const Style& rBorder,
const DiagStyle& rLFromTR, const Style& rLFromT, const Style& rLFromL, const Style& rLFromB, const DiagStyle& rLFromBR )
{
// double diagonal frame border coming from top right
if( rLFromTR.Secn() )
{
// draw from where secondary diagonal line meets the own primary
rResult.mnOffs1 = GetBLDiagOffset( lclGetBeg( rBorder ), lclGetSecnBeg( rLFromTR ), rLFromTR.GetAngle() );
rResult.mnOffs2 = GetBLDiagOffset( lclGetPrimEnd( rBorder ), lclGetSecnBeg( rLFromTR ), rLFromTR.GetAngle() );
}
// no or single diagonal frame border - ignore it
else
{
// double frame border coming from top
if( rLFromT.Secn() )
// draw from left edge of secondary vertical
rResult.mnOffs1 = lclGetSecnBeg( rLFromT );
// double frame border coming from left (from top is not double)
else if( rLFromL.Secn() )
// do not overdraw single frame border coming from top
rResult.mnOffs1 = (rLFromL.GetWidth() == rBorder.GetWidth()) ?
0 : lclGetBehindEnd( rLFromT );
// double frame border coming from bottom (from top and from left are not double)
else if( rLFromB.Secn() )
// draw from left edge of primary vertical from bottom
rResult.mnOffs1 = lclGetBeg( rLFromB );
// no other frame border is double
else
// do not overdraw vertical frame borders
rResult.mnOffs1 = std::max( lclGetBehindEnd( rLFromT ), lclGetBehindEnd( rLFromB ) );
// bottom-left point is equal to top-left point (results in rectangle)
rResult.mnOffs2 = rResult.mnOffs1;
}
}
/** Calculates X offsets for the left end of a secondary horizontal line.
See DrawHorFrameBorder() function for a description of all parameters.
@param rResult
(out-param) The contained values (sub units) specify offsets for the
X coordinates of the left end of the secondary line.
*/
void lclLinkLeftEnd_Secn(
LineEndResult& rResult, const Style& rBorder,
const DiagStyle& rLFromTR, const Style& rLFromT, const Style& rLFromL, const Style& rLFromB, const DiagStyle& rLFromBR )
{
/* Recycle lclLinkLeftEnd_Prim() function with mirrored horizontal borders. */
lclLinkLeftEnd_Prim( rResult, rBorder.Mirror(), rLFromBR, rLFromB, rLFromL.Mirror(), rLFromT, rLFromTR );
rResult.Swap();
}
// ----------------------------------------------------------------------------
// Linking of horizontal frame border ends.
/** Calculates X offsets for the left end of a horizontal frame border.
This function can be used for single and double frame borders.
See DrawHorFrameBorder() function for a description of all parameters.
@param rResult
(out-param) The contained values (sub units) specify offsets for the
X coordinates of the left end of the line(s) in the frame border.
*/
void lclLinkLeftEnd(
BorderEndResult& rResult, const Style& rBorder,
const DiagStyle& rLFromTR, const Style& rLFromT, const Style& rLFromL, const Style& rLFromB, const DiagStyle& rLFromBR )
{
if( rBorder.Secn() )
{
// current frame border is double
lclLinkLeftEnd_Prim( rResult.maPrim, rBorder, rLFromTR, rLFromT, rLFromL, rLFromB, rLFromBR );
lclLinkLeftEnd_Secn( rResult.maSecn, rBorder, rLFromTR, rLFromT, rLFromL, rLFromB, rLFromBR );
}
else if( rBorder.Prim() )
{
// current frame border is single
lclLinkLeftEnd_Single( rResult.maPrim, rBorder, rLFromTR, rLFromT, rLFromL, rLFromB, rLFromBR );
}
else
DBG_ERRORFILE( "lclLinkLeftEnd - called for invisible frame style" );
}
/** Calculates X offsets for the right end of a horizontal frame border.
This function can be used for single and double frame borders.
See DrawHorFrameBorder() function for a description of all parameters.
@param rResult
(out-param) The contained values (sub units) specify offsets for the
X coordinates of the right end of the line(s) in the frame border.
*/
void lclLinkRightEnd(
BorderEndResult& rResult, const Style& rBorder,
const DiagStyle& rRFromTL, const Style& rRFromT, const Style& rRFromR, const Style& rRFromB, const DiagStyle& rRFromBL )
{
/* Recycle lclLinkLeftEnd() function with mirrored vertical borders. */
lclLinkLeftEnd( rResult, rBorder, rRFromTL.Mirror(), rRFromT.Mirror(), rRFromR, rRFromB.Mirror(), rRFromBL.Mirror() );
rResult.Negate();
}
// ----------------------------------------------------------------------------
// Linking of horizontal and vertical frame borders.
/** Calculates X offsets for all line ends of a horizontal frame border.
This function can be used for single and double frame borders.
See DrawHorFrameBorder() function for a description of all parameters.
@param rResult
(out-param) The contained values (sub units) specify offsets for the
X coordinates of both ends of the line(s) in the frame border. To get
the actual X coordinates to draw the lines, these offsets have to be
added to the X coordinates of the reference points of the frame border
(the offsets may be negative).
*/
void lclLinkHorFrameBorder(
BorderResult& rResult, const Style& rBorder,
const DiagStyle& rLFromTR, const Style& rLFromT, const Style& rLFromL, const Style& rLFromB, const DiagStyle& rLFromBR,
const DiagStyle& rRFromTL, const Style& rRFromT, const Style& rRFromR, const Style& rRFromB, const DiagStyle& rRFromBL )
{
lclLinkLeftEnd( rResult.maBeg, rBorder, rLFromTR, rLFromT, rLFromL, rLFromB, rLFromBR );
lclLinkRightEnd( rResult.maEnd, rBorder, rRFromTL, rRFromT, rRFromR, rRFromB, rRFromBL );
}
/** Calculates Y offsets for all line ends of a vertical frame border.
This function can be used for single and double frame borders.
See DrawVerFrameBorder() function for a description of all parameters.
@param rResult
(out-param) The contained values (sub units) specify offsets for the
Y coordinates of both ends of the line(s) in the frame border. To get
the actual Y coordinates to draw the lines, these offsets have to be
added to the Y coordinates of the reference points of the frame border
(the offsets may be negative).
*/
void lclLinkVerFrameBorder(
BorderResult& rResult, const Style& rBorder,
const DiagStyle& rTFromBL, const Style& rTFromL, const Style& rTFromT, const Style& rTFromR, const DiagStyle& rTFromBR,
const DiagStyle& rBFromTL, const Style& rBFromL, const Style& rBFromB, const Style& rBFromR, const DiagStyle& rBFromTR )
{
/* Recycle lclLinkHorFrameBorder() function with correct parameters. The
frame border is virtually mirrored at the top-left to bottom-right
diagonal. rTFromBR and rBFromTL are mirrored to process their primary
and secondary lines correctly. */
lclLinkHorFrameBorder( rResult, rBorder,
rTFromBL, rTFromL, rTFromT, rTFromR, rTFromBR.Mirror(),
rBFromTL.Mirror(), rBFromL, rBFromB, rBFromR, rBFromTR );
}
// ============================================================================
#if 0
// Not used anymore, but not deleted for possible future usage.
/** Returns the relative Y offset of the intercept point of 2 diagonal borders.
@param nTLBROffs
Width offset (sub units) across the top-left to bottom-right frame border.
@param fTLBRAngle
Inner angle between horizontal and top-left to bottom-right frame border.
@param nBLTROffs
Width offset (sub units) across the bottom-left to top-right frame border.
@param fBLTRAngle
Inner angle between horizontal and bottom-left to top-right frame border.
@return
Offset (sub units) relative to the Y position of the centered intercept
point of both diagonal frame borders.
*/
long lclGetDiagDiagOffset( long nTLBROffs, double fTLBRAngle, long nBLTROffs, double fBLTRAngle )
{
double fASin = sin( fTLBRAngle );
double fACos = cos( fTLBRAngle );
double fAX = -nTLBROffs * fASin;
double fAY = nTLBROffs * fACos;
double fRAX = fACos;
double fRAY = fASin;
double fBSin = sin( fBLTRAngle );
double fBCos = cos( fBLTRAngle );
double fBX = nBLTROffs * fBSin;
double fBY = nBLTROffs * fBCos;
double fRBX = fBCos;
double fRBY = -fBSin;
double fKA = (fRBX * (fBY - fAY) - fRBY * (fBX - fAX)) / (fRBX * fRAY - fRAX * fRBY);
return lclD2L( fAY + fKA * fRAY );
}
#endif
// ----------------------------------------------------------------------------
// Linking of diagonal frame borders.
/** Calculates clipping offsets for a top-left to bottom-right frame border.
This function can be used for single and double frame borders.
See DrawDiagFrameBorders() function for a description of all parameters.
@param rResult
(out-param) The contained values (sub units) specify offsets for all
borders of the reference rectangle containing the diagonal frame border.
*/
void lclLinkTLBRFrameBorder(
DiagBorderResult& rResult, const Style& rBorder,
const Style& rTLFromB, const Style& rTLFromR, const Style& rBRFromT, const Style& rBRFromL )
{
bool bIsDbl = rBorder.Secn() != 0;
rResult.maPrim.mnLClip = lclGetBehindEnd( rTLFromB );
rResult.maPrim.mnRClip = (bIsDbl && rBRFromT.Secn()) ? lclGetEnd( rBRFromT ) : lclGetBeforeBeg( rBRFromT );
rResult.maPrim.mnTClip = (bIsDbl && rTLFromR.Secn()) ? lclGetBeg( rTLFromR ) : lclGetBehindEnd( rTLFromR );
rResult.maPrim.mnBClip = lclGetBeforeBeg( rBRFromL );
if( bIsDbl )
{
rResult.maSecn.mnLClip = rTLFromB.Secn() ? lclGetBeg( rTLFromB ) : lclGetBehindEnd( rTLFromB );
rResult.maSecn.mnRClip = lclGetBeforeBeg( rBRFromT );
rResult.maSecn.mnTClip = lclGetBehindEnd( rTLFromR );
rResult.maSecn.mnBClip = rBRFromL.Secn() ? lclGetEnd( rBRFromL ) : lclGetBeforeBeg( rBRFromL );
}
}
/** Calculates clipping offsets for a bottom-left to top-right frame border.
This function can be used for single and double frame borders.
See DrawDiagFrameBorders() function for a description of all parameters.
@param rResult
(out-param) The contained values (sub units) specify offsets for all
borders of the reference rectangle containing the diagonal frame border.
*/
void lclLinkBLTRFrameBorder(
DiagBorderResult& rResult, const Style& rBorder,
const Style& rBLFromT, const Style& rBLFromR, const Style& rTRFromB, const Style& rTRFromL )
{
bool bIsDbl = rBorder.Secn() != 0;
rResult.maPrim.mnLClip = lclGetBehindEnd( rBLFromT );
rResult.maPrim.mnRClip = (bIsDbl && rTRFromB.Secn()) ? lclGetEnd( rTRFromB ) : lclGetBeforeBeg( rTRFromB );
rResult.maPrim.mnTClip = lclGetBehindEnd( rTRFromL );
rResult.maPrim.mnBClip = (bIsDbl && rBLFromR.Secn()) ? lclGetEnd( rBLFromR ) : lclGetBeforeBeg( rBLFromR );
if( bIsDbl )
{
rResult.maSecn.mnLClip = rBLFromT.Secn() ? lclGetBeg( rBLFromT ) : lclGetBehindEnd( rBLFromT );
rResult.maSecn.mnRClip = lclGetBeforeBeg( rTRFromB );
rResult.maSecn.mnTClip = rTRFromL.Secn() ? lclGetBeg( rTRFromL ) : lclGetBehindEnd( rTRFromL );
rResult.maSecn.mnBClip = lclGetBeforeBeg( rBLFromR );
}
}
/** Calculates clipping offsets for both diagonal frame borders.
This function can be used for single and double frame borders.
See DrawDiagFrameBorders() function for a description of all parameters.
@param rResult
(out-param) The contained values (sub units) specify offsets for all
borders of the reference rectangle containing the diagonal frame
borders.
*/
void lclLinkDiagFrameBorders(
DiagBordersResult& rResult, const Style& rTLBR, const Style& rBLTR,
const Style& rTLFromB, const Style& rTLFromR, const Style& rBRFromT, const Style& rBRFromL,
const Style& rBLFromT, const Style& rBLFromR, const Style& rTRFromB, const Style& rTRFromL )
{
lclLinkTLBRFrameBorder( rResult.maTLBR, rTLBR, rTLFromB, rTLFromR, rBRFromT, rBRFromL );
lclLinkBLTRFrameBorder( rResult.maBLTR, rBLTR, rBLFromT, rBLFromR, rTRFromB, rTRFromL );
}
// ============================================================================
// Drawing functions
// ============================================================================
// ----------------------------------------------------------------------------
// Simple helper functions
/** Converts sub units to OutputDevice map units. */
inline long lclToMapUnit( long nSubUnits )
{
return ((nSubUnits < 0) ? (nSubUnits - 127) : (nSubUnits + 128)) / 256;
}
/** Converts a point in sub units to an OutputDevice point. */
inline Point lclToMapUnit( long nSubXPos, long nSubYPos )
{
return Point( lclToMapUnit( nSubXPos ), lclToMapUnit( nSubYPos ) );
}
/** Returns a polygon constructed from a vector of points. */
inline Polygon lclCreatePolygon( const PointVec& rPoints )
{
return Polygon( static_cast< USHORT >( rPoints.size() ), &rPoints[ 0 ] );
}
/** Returns a polygon constructed from the four passed points. */
Polygon lclCreatePolygon( const Point& rP1, const Point& rP2, const Point& rP3, const Point& rP4 )
{
PointVec aPoints;
aPoints.reserve( 4 );
aPoints.push_back( rP1 );
aPoints.push_back( rP2 );
aPoints.push_back( rP3 );
aPoints.push_back( rP4 );
return lclCreatePolygon( aPoints );
}
/** Returns a polygon constructed from the five passed points. */
Polygon lclCreatePolygon( const Point& rP1, const Point& rP2, const Point& rP3, const Point& rP4, const Point& rP5 )
{
PointVec aPoints;
aPoints.reserve( 5 );
aPoints.push_back( rP1 );
aPoints.push_back( rP2 );
aPoints.push_back( rP3 );
aPoints.push_back( rP4 );
aPoints.push_back( rP5 );
return lclCreatePolygon( aPoints );
}
/** Returns a polygon constructed from the two passed line positions. */
inline Polygon lclCreatePolygon( const LinePoints& rPoints1, const LinePoints& rPoints2 )
{
return lclCreatePolygon( rPoints1.maBeg, rPoints1.maEnd, rPoints2.maEnd, rPoints2.maBeg );
}
/** Sets the color of the passed frame style to the output device.
Sets the line color and fill color in the output device.
@param rDev
The output device the color has to be set to. The old colors are pushed
onto the device's stack and can be restored with a call to
OutputDevice::Pop(). Please take care about the correct calling order
of Pop() if this function is used with other functions pushing
something onto the stack.
@param rStyle
The border style that contains the line color to be set to the device.
*/
void lclSetColorToOutDev( OutputDevice& rDev, const Style& rStyle, const Color* pForceColor )
{
rDev.Push( PUSH_LINECOLOR | PUSH_FILLCOLOR );
rDev.SetLineColor( pForceColor ? *pForceColor : rStyle.GetColor() );
rDev.SetFillColor( pForceColor ? *pForceColor : rStyle.GetColor() );
}
// ----------------------------------------------------------------------------
// Generic drawing functions.
/** Draws a thin (1 pixel wide) line, optionally dotted, into the passed output device. */
void lclDrawThinLine( OutputDevice& rDev, const Point& rBeg, const Point& rEnd, bool bDotted )
{
#if SVX_FRAME_USE_LINEINFO
if( bDotted && (rBeg != rEnd) )
{
// using LineInfo for dotted lines looks ugly and does not work well for diagonal lines
LineInfo aLineInfo( LINE_DASH, 1 );
aLineInfo.SetDotCount( 1 );
aLineInfo.SetDotLen( 1 );
aLineInfo.SetDistance( 3 );
rDev.DrawLine( rBeg, rEnd, aLineInfo );
}
#else
Point aBeg( rDev.LogicToPixel( rBeg ) );
Point aEnd( rDev.LogicToPixel( rEnd ) );
if( bDotted && (aBeg != aEnd) )
{
bool bHor = Abs( aEnd.X() - aBeg.X() ) > Abs( aEnd.Y() - aBeg.Y() );
const Point& rBegPos( bHor ? ((aBeg.X() < aEnd.X()) ? aBeg : aEnd) : ((aBeg.Y() < aEnd.Y()) ? aBeg : aEnd ) );
const Point& rEndPos( (rBegPos == aBeg) ? aEnd : aBeg );
long nAlongBeg = bHor ? rBegPos.X() : rBegPos.Y();
long nAcrssBeg = bHor ? rBegPos.Y() : rBegPos.X();
long nAlongSize = (bHor ? rEndPos.X() : rEndPos.Y()) - nAlongBeg;
long nAcrssSize = (bHor ? rEndPos.Y() : rEndPos.X()) - nAcrssBeg;
double fGradient = static_cast< double >( nAcrssSize ) / nAlongSize;
PointVec aPoints;
aPoints.reserve( (nAlongSize + 1) / 2 );
for( long nAlongIdx = 0; nAlongIdx <= nAlongSize; nAlongIdx += 2 )
{
long nAl = nAlongBeg + nAlongIdx;
long nAc = nAcrssBeg + lclD2L( fGradient * nAlongIdx );
aPoints.push_back( Point( bHor ? nAl : nAc, bHor ? nAc : nAl ) );
}
rDev.Push( PUSH_MAPMODE );
rDev.SetMapMode( MAP_PIXEL );
rDev.DrawPixel( lclCreatePolygon( aPoints ) );
rDev.Pop(); // map mode
}
#endif
else
rDev.DrawLine( rBeg, rEnd );
}
/** Draws a thin (1 pixel wide) line, optionally dotted, into the passed output device. */
inline void lclDrawThinLine( OutputDevice& rDev, const LinePoints& rPoints, bool bDotted )
{
lclDrawThinLine( rDev, rPoints.maBeg, rPoints.maEnd, bDotted );
}
/** Draws a polygon with four points into the passed output device. */
inline void lclDrawPolygon( OutputDevice& rDev, const Point& rP1, const Point& rP2, const Point& rP3, const Point& rP4 )
{
rDev.DrawPolygon( lclCreatePolygon( rP1, rP2, rP3, rP4 ) );
}
/** Draws a polygon specified by two borders into the passed output device. */
inline void lclDrawPolygon( OutputDevice& rDev, const LinePoints& rPoints1, const LinePoints& rPoints2 )
{
rDev.DrawPolygon( lclCreatePolygon( rPoints1, rPoints2 ) );
}
// ============================================================================
// Drawing of horizontal frame borders.
/** Draws a horizontal thin or thick line into the passed output device.
The X coordinates of the edges of the line are adjusted according to the
passed LineEndResult structs. A one pixel wide line can be drawn dotted.
*/
void lclDrawHorLine(
OutputDevice& rDev,
const Point& rLPos, const LineEndResult& rLRes,
const Point& rRPos, const LineEndResult& rRRes,
long nTOffs, long nBOffs, bool bDotted )
{
LinePoints aTPoints( rLPos + lclToMapUnit( rLRes.mnOffs1, nTOffs ), rRPos + lclToMapUnit( rRRes.mnOffs1, nTOffs ) );
if( nTOffs == nBOffs )
lclDrawThinLine( rDev, aTPoints, bDotted );
else
{
LinePoints aBPoints( rLPos + lclToMapUnit( rLRes.mnOffs2, nBOffs ), rRPos + lclToMapUnit( rRRes.mnOffs2, nBOffs ) );
lclDrawPolygon( rDev, aTPoints, aBPoints );
}
}
/** Draws a horizontal frame border into the passed output device.
@param rLPos
The top-left or bottom-left reference point of the diagonal frame border.
@param rRPos
The top-right or bottom-right reference point of the diagonal frame border.
@param rBorder
The frame style used to draw the border.
@param rResult
The X coordinates of the edges of all lines of the frame border are
adjusted according to the offsets contained here.
*/
void lclDrawHorFrameBorder(
OutputDevice& rDev, const Point& rLPos, const Point& rRPos,
const Style& rBorder, const BorderResult& rResult, const Color* pForceColor )
{
DBG_ASSERT( rBorder.Prim(), "svx::frame::lclDrawHorFrameBorder - line not visible" );
DBG_ASSERT( rLPos.X() <= rRPos.X(), "svx::frame::lclDrawHorFrameBorder - wrong order of line ends" );
DBG_ASSERT( rLPos.Y() == rRPos.Y(), "svx::frame::lclDrawHorFrameBorder - line not horizontal" );
if( rLPos.X() <= rRPos.X() )
{
lclSetColorToOutDev( rDev, rBorder, pForceColor );
lclDrawHorLine( rDev, rLPos, rResult.maBeg.maPrim, rRPos, rResult.maEnd.maPrim,
lclGetBeg( rBorder ), lclGetPrimEnd( rBorder ), rBorder.Dotted() );
if( rBorder.Secn() )
lclDrawHorLine( rDev, rLPos, rResult.maBeg.maSecn, rRPos, rResult.maEnd.maSecn,
lclGetSecnBeg( rBorder ), lclGetEnd( rBorder ), rBorder.Dotted() );
rDev.Pop(); // colors
}
}
// ----------------------------------------------------------------------------
// Drawing of vertical frame borders.
/** Draws a vertical thin or thick line into the passed output device.
The Y coordinates of the edges of the line are adjusted according to the
passed LineEndResult structs. A one pixel wide line can be drawn dotted.
*/
void lclDrawVerLine(
OutputDevice& rDev,
const Point& rTPos, const LineEndResult& rTRes,
const Point& rBPos, const LineEndResult& rBRes,
long nLOffs, long nROffs, bool bDotted )
{
LinePoints aLPoints( rTPos + lclToMapUnit( nLOffs, rTRes.mnOffs1 ), rBPos + lclToMapUnit( nLOffs, rBRes.mnOffs1 ) );
if( nLOffs == nROffs )
lclDrawThinLine( rDev, aLPoints, bDotted );
else
{
LinePoints aRPoints( rTPos + lclToMapUnit( nROffs, rTRes.mnOffs2 ), rBPos + lclToMapUnit( nROffs, rBRes.mnOffs2 ) );
lclDrawPolygon( rDev, aLPoints, aRPoints );
}
}
/** Draws a vertical frame border into the passed output device.
@param rTPos
The top-left or top-right reference point of the diagonal frame border.
@param rBPos
The bottom-left or bottom-right reference point of the diagonal frame border.
@param rBorder
The frame style used to draw the border.
@param rResult
The Y coordinates of the edges of all lines of the frame border are
adjusted according to the offsets contained here.
*/
void lclDrawVerFrameBorder(
OutputDevice& rDev, const Point& rTPos, const Point& rBPos,
const Style& rBorder, const BorderResult& rResult, const Color* pForceColor )
{
DBG_ASSERT( rBorder.Prim(), "svx::frame::lclDrawVerFrameBorder - line not visible" );
DBG_ASSERT( rTPos.Y() <= rBPos.Y(), "svx::frame::lclDrawVerFrameBorder - wrong order of line ends" );
DBG_ASSERT( rTPos.X() == rBPos.X(), "svx::frame::lclDrawVerFrameBorder - line not vertical" );
if( rTPos.Y() <= rBPos.Y() )
{
lclSetColorToOutDev( rDev, rBorder, pForceColor );
lclDrawVerLine( rDev, rTPos, rResult.maBeg.maPrim, rBPos, rResult.maEnd.maPrim,
lclGetBeg( rBorder ), lclGetPrimEnd( rBorder ), rBorder.Dotted() );
if( rBorder.Secn() )
lclDrawVerLine( rDev, rTPos, rResult.maBeg.maSecn, rBPos, rResult.maEnd.maSecn,
lclGetSecnBeg( rBorder ), lclGetEnd( rBorder ), rBorder.Dotted() );
rDev.Pop(); // colors
}
}
// ============================================================================
// Drawing of diagonal frame borders, incudes clipping functions.
/** Returns the drawing coordinates for a diagonal thin line.
This function can be used for top-left to bottom-right and for bottom-left
to top-right lines.
@param rRect
The reference rectangle of the diagonal frame border.
@param bTLBR
true = top-left to bottom-right; false = bottom-left to top-right.
@param nDiagOffs
Width offset (sub units) across the diagonal frame border.
@return
A struct containg start and end position of the diagonal line.
*/
LinePoints lclGetDiagLineEnds( const Rectangle& rRect, bool bTLBR, long nDiagOffs )
{
LinePoints aPoints( rRect, bTLBR );
bool bVert = rRect.GetWidth() < rRect.GetHeight();
double fAngle = bVert ? GetVerDiagAngle( rRect ) : GetHorDiagAngle( rRect );
// vertical top-left to bottom-right borders are handled mirrored
if( bVert && bTLBR )
nDiagOffs = -nDiagOffs;
long nTOffs = bTLBR ? GetTLDiagOffset( 0, nDiagOffs, fAngle ) : GetTRDiagOffset( 0, nDiagOffs, fAngle );
long nBOffs = bTLBR ? GetBRDiagOffset( 0, nDiagOffs, fAngle ) : GetBLDiagOffset( 0, nDiagOffs, fAngle );
// vertical bottom-left to top-right borders are handled with exchanged end points
if( bVert && !bTLBR )
std::swap( nTOffs, nBOffs );
(bVert ? aPoints.maBeg.Y() : aPoints.maBeg.X()) += lclToMapUnit( nTOffs );
(bVert ? aPoints.maEnd.Y() : aPoints.maEnd.X()) += lclToMapUnit( nBOffs );
return aPoints;
}
// ----------------------------------------------------------------------------
// Clipping functions for diagonal frame borders.
/** Limits the clipping region to the inner area of a rectange.
Takes the values from the passed DiagLineResult struct into account. They
may specify to not clip one or more borders of a rectangle.
@param rDev
The output device with the clipping region to be modified. The old
clipping region is pushed onto the device's stack and can be restored
with a call to OutputDevice::Pop(). Please take care about the correct
calling order of Pop() if this function is used with other functions
pushing something onto the stack.
@param rRect
The reference rectangle of the diagonal frame borders.
@param rResult
The result struct containing modifies for each border of the reference
rectangle.
*/
void lclPushDiagClipRect( OutputDevice& rDev, const Rectangle& rRect, const DiagLineResult& rResult )
{
// PixelToLogic() regards internal offset of the output device
Rectangle aClipRect( rRect );
aClipRect.Left() += lclToMapUnit( rResult.mnLClip );
aClipRect.Top() += lclToMapUnit( rResult.mnTClip );
aClipRect.Right() += lclToMapUnit( rResult.mnRClip );
aClipRect.Bottom() += lclToMapUnit( rResult.mnBClip );
// output device would adjust the rectangle -> invalidate it before
if( (aClipRect.GetWidth() < 1) ||(aClipRect.GetHeight() < 1) )
aClipRect.SetEmpty();
rDev.Push( PUSH_CLIPREGION );
rDev.IntersectClipRegion( aClipRect );
}
/** Excludes inner area of a crossing double frame border from clipping region.
This function is used to modify the clipping region so that it excludes the
inner free area of a double diagonal frame border. This makes it possible
to draw a diagonal frame border in one step without taking care of the
crossing double frame border.
@param rDev
The output device with the clipping region to be modified. The old
clipping region is pushed onto the device's stack and can be restored
with a call to OutputDevice::Pop(). Please take care about the correct
calling order of Pop() if this function is used with other functions
pushing something onto the stack.
@param rRect
The reference rectangle of the diagonal frame borders.
@param bTLBR
The orientation of the processed frame border (not the orientation of
the crossing frame border).
@param bCrossStyle
The style of the crossing frame border. Must be a double frame style.
*/
void lclPushCrossingClipRegion( OutputDevice& rDev, const Rectangle& rRect, bool bTLBR, const Style& rCrossStyle )
{
DBG_ASSERT( rCrossStyle.Secn(), "lclGetCrossingClipRegion - use only for double styles" );
LinePoints aLPoints( lclGetDiagLineEnds( rRect, !bTLBR, lclGetPrimEnd( rCrossStyle ) ) );
LinePoints aRPoints( lclGetDiagLineEnds( rRect, !bTLBR, lclGetSecnBeg( rCrossStyle ) ) );
Region aClipReg;
if( bTLBR )
{
aClipReg = lclCreatePolygon(
aLPoints.maBeg, aLPoints.maEnd, rRect.BottomRight(), rRect.BottomLeft(), rRect.TopLeft() );
aClipReg.Union( lclCreatePolygon(
aRPoints.maBeg, aRPoints.maEnd, rRect.BottomRight(), rRect.TopRight(), rRect.TopLeft() ) );
}
else
{
aClipReg = lclCreatePolygon(
aLPoints.maBeg, aLPoints.maEnd, rRect.BottomLeft(), rRect.TopLeft(), rRect.TopRight() );
aClipReg.Union( lclCreatePolygon(
aRPoints.maBeg, aRPoints.maEnd, rRect.BottomLeft(), rRect.BottomRight(), rRect.TopRight() ) );
}
rDev.Push( PUSH_CLIPREGION );
rDev.IntersectClipRegion( aClipReg );
}
// ----------------------------------------------------------------------------
// Drawing functions for diagonal frame borders.
/** Draws a diagonal thin or thick line into the passed output device.
The clipping region of the output device is modified according to the
passed DiagLineResult struct. A one pixel wide line can be drawn dotted.
*/
void lclDrawDiagLine(
OutputDevice& rDev, const Rectangle& rRect, bool bTLBR,
const DiagLineResult& rResult, long nDiagOffs1, long nDiagOffs2, bool bDotted )
{
lclPushDiagClipRect( rDev, rRect, rResult );
LinePoints aLPoints( lclGetDiagLineEnds( rRect, bTLBR, nDiagOffs1 ) );
if( nDiagOffs1 == nDiagOffs2 )
lclDrawThinLine( rDev, aLPoints, bDotted );
else
lclDrawPolygon( rDev, aLPoints, lclGetDiagLineEnds( rRect, bTLBR, nDiagOffs2 ) );
rDev.Pop(); // clipping region
}
/** Draws a diagonal frame border into the passed output device.
The lines of the frame border are drawn interrupted, if the style of the
crossing frame border is double.
@param rRect
The reference rectangle of the diagonal frame border.
@param bTLBR
The orientation of the diagonal frame border.
@param rBorder
The frame style used to draw the border.
@param rResult
Offsets (sub units) to modify the clipping region of the output device.
@param rCrossStyle
Style of the crossing diagonal frame border.
*/
void lclDrawDiagFrameBorder(
OutputDevice& rDev, const Rectangle& rRect, bool bTLBR,
const Style& rBorder, const DiagBorderResult& rResult, const Style& rCrossStyle,
const Color* pForceColor, bool bDiagDblClip )
{
DBG_ASSERT( rBorder.Prim(), "svx::frame::lclDrawDiagFrameBorder - line not visible" );
bool bClip = bDiagDblClip && rCrossStyle.Secn();
if( bClip )
lclPushCrossingClipRegion( rDev, rRect, bTLBR, rCrossStyle );
lclSetColorToOutDev( rDev, rBorder, pForceColor );
lclDrawDiagLine( rDev, rRect, bTLBR, rResult.maPrim, lclGetBeg( rBorder ), lclGetPrimEnd( rBorder ), rBorder.Dotted() );
if( rBorder.Secn() )
lclDrawDiagLine( rDev, rRect, bTLBR, rResult.maSecn, lclGetSecnBeg( rBorder ), lclGetEnd( rBorder ), rBorder.Dotted() );
rDev.Pop(); // colors
if( bClip )
rDev.Pop(); // clipping region
}
/** Draws both diagonal frame borders into the passed output device.
The lines of each frame border is drawn interrupted, if the style of the
other crossing frame border is double.
@param rRect
The reference rectangle of the diagonal frame borders.
@param rTLBR
The frame style of the top-left to bottom-right frame border.
@param rBLTR
The frame style of the bottom-left to top-right frame border.
@param rResult
Offsets (sub units) to modify the clipping region of the output device.
*/
void lclDrawDiagFrameBorders(
OutputDevice& rDev, const Rectangle& rRect,
const Style& rTLBR, const Style& rBLTR, const DiagBordersResult& rResult,
const Color* pForceColor, bool bDiagDblClip )
{
DBG_ASSERT( (rRect.GetWidth() > 1) && (rRect.GetHeight() > 1), "svx::frame::lclDrawDiagFrameBorders - rectangle too small" );
if( (rRect.GetWidth() > 1) && (rRect.GetHeight() > 1) )
{
bool bDrawTLBR = rTLBR.Prim() != 0;
bool bDrawBLTR = rBLTR.Prim() != 0;
bool bFirstDrawBLTR = rTLBR.Secn() != 0;
if( bDrawBLTR && bFirstDrawBLTR )
lclDrawDiagFrameBorder( rDev, rRect, false, rBLTR, rResult.maBLTR, rTLBR, pForceColor, bDiagDblClip );
if( bDrawTLBR )
lclDrawDiagFrameBorder( rDev, rRect, true, rTLBR, rResult.maTLBR, rBLTR, pForceColor, bDiagDblClip );
if( bDrawBLTR && !bFirstDrawBLTR )
lclDrawDiagFrameBorder( rDev, rRect, false, rBLTR, rResult.maBLTR, rTLBR, pForceColor, bDiagDblClip );
}
}
// ============================================================================
} // namespace
// ============================================================================
// Classes
// ============================================================================
#define SCALEVALUE( value ) lclScaleValue( value, fScale, nMaxWidth )
void Style::Clear()
{
Set( Color(), 0, 0, 0 );
}
void Style::Set( sal_uInt16 nP, sal_uInt16 nD, sal_uInt16 nS )
{
/* nP nD nS -> mnPrim mnDist mnSecn
--------------------------------------
any any 0 nP 0 0
0 any >0 nS 0 0
>0 0 >0 nP 0 0
>0 >0 >0 nP nD nS
*/
mnPrim = nP ? nP : nS;
mnDist = (nP && nS) ? nD : 0;
mnSecn = (nP && nD) ? nS : 0;
}
void Style::Set( const Color& rColor, sal_uInt16 nP, sal_uInt16 nD, sal_uInt16 nS )
{
maColor = rColor;
Set( nP, nD, nS );
}
void Style::Set( const SvxBorderLine& rBorder, double fScale, sal_uInt16 nMaxWidth, bool bUseDots )
{
maColor = rBorder.GetColor();
USHORT nPrim = rBorder.GetOutWidth();
USHORT nDist = rBorder.GetDistance();
USHORT nSecn = rBorder.GetInWidth();
if( !nSecn ) // no or single frame border
{
Set( SCALEVALUE( nPrim ), 0, 0 );
mbDotted = bUseDots && (0 < nPrim) && (nPrim < 10);
}
else
{
Set( SCALEVALUE( nPrim ), SCALEVALUE( nDist ), SCALEVALUE( nSecn ) );
mbDotted = false;
// Enlarge the style if distance is too small due to rounding losses.
sal_uInt16 nPixWidth = SCALEVALUE( nPrim + nDist + nSecn );
if( nPixWidth > GetWidth() )
mnDist = nPixWidth - mnPrim - mnSecn;
// Shrink the style if it is too thick for the control.
while( GetWidth() > nMaxWidth )
{
// First decrease space between lines.
if( mnDist )
--mnDist;
// Still too thick? Decrease the line widths.
if( GetWidth() > nMaxWidth )
{
if( mnPrim && (mnPrim == mnSecn) )
{
// Both lines equal - decrease both to keep symmetry.
--mnPrim;
--mnSecn;
}
else
{
// Decrease each line for itself
if( mnPrim )
--mnPrim;
if( (GetWidth() > nMaxWidth) && mnSecn )
--mnSecn;
}
}
}
}
}
void Style::Set( const SvxBorderLine* pBorder, double fScale, sal_uInt16 nMaxWidth, bool bUseDots )
{
if( pBorder )
Set( *pBorder, fScale, nMaxWidth, bUseDots );
else
{
Clear();
mbDotted = false;
}
}
Style& Style::ScaleSelf( double fScale, sal_uInt16 nMaxWidth )
{
Set( SCALEVALUE( mnPrim ), SCALEVALUE( mnDist ), SCALEVALUE( mnSecn ), mbDotted );
return *this;
}
Style Style::Scale( double fScale, sal_uInt16 nMaxWidth ) const
{
return Style( *this ).ScaleSelf( fScale, nMaxWidth );
}
Style& Style::MirrorSelf()
{
if( mnSecn )
std::swap( mnPrim, mnSecn );
if( meRefMode != REFMODE_CENTERED )
meRefMode = (meRefMode == REFMODE_BEGIN) ? REFMODE_END : REFMODE_BEGIN;
return *this;
}
Style Style::Mirror() const
{
return Style( *this ).MirrorSelf();
}
bool operator==( const Style& rL, const Style& rR )
{
return (rL.Prim() == rR.Prim()) && (rL.Dist() == rR.Dist()) && (rL.Secn() == rR.Secn()) &&
(rL.GetColor() == rR.GetColor()) && (rL.GetRefMode() == rR.GetRefMode()) && (rL.Dotted() == rR.Dotted());
}
bool operator<( const Style& rL, const Style& rR )
{
// different total widths -> rL<rR, if rL is thinner
sal_uInt16 nLW = rL.GetWidth();
sal_uInt16 nRW = rR.GetWidth();
if( nLW != nRW ) return nLW < nRW;
// one line double, the other single -> rL<rR, if rL is single
if( (rL.Secn() == 0) != (rR.Secn() == 0) ) return rL.Secn() == 0;
// both lines double with different distances -> rL<rR, if distance of rL greater
if( (rL.Secn() && rR.Secn()) && (rL.Dist() != rR.Dist()) ) return rL.Dist() > rR.Dist();
// both lines single and 1 unit thick, only one is dotted -> rL<rR, if rL is dotted
if( (nLW == 1) && (rL.Dotted() != rR.Dotted()) ) return rL.Dotted();
// seem to be equal
return false;
}
#undef SCALEVALUE
// ============================================================================
// Various helper functions
// ============================================================================
double GetHorDiagAngle( long nWidth, long nHeight )
{
return atan2( static_cast< double >( Abs( nHeight ) ), static_cast< double >( Abs( nWidth ) ) );
}
// ============================================================================
long GetTLDiagOffset( long nVerOffs, long nDiagOffs, double fAngle )
{
return lclD2L( nVerOffs / tan( fAngle ) + nDiagOffs / sin( fAngle ) );
}
long GetBLDiagOffset( long nVerOffs, long nDiagOffs, double fAngle )
{
return lclD2L( -nVerOffs / tan( fAngle ) + nDiagOffs / sin( fAngle ) );
}
long GetBRDiagOffset( long nVerOffs, long nDiagOffs, double fAngle )
{
return -lclD2L( -nVerOffs / tan( fAngle ) - nDiagOffs / sin( fAngle ) );
}
long GetTRDiagOffset( long nVerOffs, long nDiagOffs, double fAngle )
{
return -lclD2L( nVerOffs / tan( fAngle ) - nDiagOffs / sin( fAngle ) );
}
// ============================================================================
bool CheckFrameBorderConnectable( const Style& rLBorder, const Style& rRBorder,
const Style& rTFromTL, const Style& rTFromT, const Style& rTFromTR,
const Style& rBFromBL, const Style& rBFromB, const Style& rBFromBR )
{
return // returns 1 AND (2a OR 2b)
// 1) only, if both frame borders are equal
(rLBorder == rRBorder)
&&
(
(
// 2a) if the borders are not double, at least one of the vertical must not be double
!rLBorder.Secn() && (!rTFromT.Secn() || !rBFromB.Secn())
)
||
(
// 2b) if the borders are double, all other borders must not be double
rLBorder.Secn() &&
!rTFromTL.Secn() && !rTFromT.Secn() && !rTFromTR.Secn() &&
!rBFromBL.Secn() && !rBFromB.Secn() && !rBFromBR.Secn()
)
);
}
// ============================================================================
// Drawing functions
// ============================================================================
void DrawHorFrameBorder( OutputDevice& rDev,
const Point& rLPos, const Point& rRPos, const Style& rBorder,
const DiagStyle& rLFromTR, const Style& rLFromT, const Style& rLFromL, const Style& rLFromB, const DiagStyle& rLFromBR,
const DiagStyle& rRFromTL, const Style& rRFromT, const Style& rRFromR, const Style& rRFromB, const DiagStyle& rRFromBL,
const Color* pForceColor )
{
if( rBorder.Prim() )
{
BorderResult aResult;
lclLinkHorFrameBorder( aResult, rBorder,
rLFromTR, rLFromT, rLFromL, rLFromB, rLFromBR,
rRFromTL, rRFromT, rRFromR, rRFromB, rRFromBL );
lclDrawHorFrameBorder( rDev, rLPos, rRPos, rBorder, aResult, pForceColor );
}
}
void DrawHorFrameBorder( OutputDevice& rDev,
const Point& rLPos, const Point& rRPos, const Style& rBorder,
const Style& rLFromT, const Style& rLFromL, const Style& rLFromB,
const Style& rRFromT, const Style& rRFromR, const Style& rRFromB,
const Color* pForceColor )
{
/* Recycle complex version of the DrawHorFrameBorder() function with empty diagonals. */
const DiagStyle aNoStyle;
DrawHorFrameBorder(
rDev, rLPos, rRPos, rBorder,
aNoStyle, rLFromT, rLFromL, rLFromB, aNoStyle,
aNoStyle, rRFromT, rRFromR, rRFromB, aNoStyle,
pForceColor );
}
void DrawHorFrameBorder( OutputDevice& rDev,
const Point& rLPos, const Point& rRPos, const Style& rBorder, const Color* pForceColor )
{
if( rBorder.Prim() )
lclDrawHorFrameBorder( rDev, rLPos, rRPos, rBorder, BorderResult(), pForceColor );
}
// ----------------------------------------------------------------------------
void DrawVerFrameBorder( OutputDevice& rDev,
const Point& rTPos, const Point& rBPos, const Style& rBorder,
const DiagStyle& rTFromBL, const Style& rTFromL, const Style& rTFromT, const Style& rTFromR, const DiagStyle& rTFromBR,
const DiagStyle& rBFromTL, const Style& rBFromL, const Style& rBFromB, const Style& rBFromR, const DiagStyle& rBFromTR,
const Color* pForceColor )
{
if( rBorder.Prim() )
{
BorderResult aResult;
lclLinkVerFrameBorder( aResult, rBorder,
rTFromBL, rTFromL, rTFromT, rTFromR, rTFromBR,
rBFromTL, rBFromL, rBFromB, rBFromR, rBFromTR );
lclDrawVerFrameBorder( rDev, rTPos, rBPos, rBorder, aResult, pForceColor );
}
}
void DrawVerFrameBorder( OutputDevice& rDev,
const Point& rTPos, const Point& rBPos, const Style& rBorder,
const Style& rTFromL, const Style& rTFromT, const Style& rTFromR,
const Style& rBFromL, const Style& rBFromB, const Style& rBFromR,
const Color* pForceColor )
{
/* Recycle complex version of the DrawVerFrameBorder() function with empty diagonals. */
const DiagStyle aNoStyle;
DrawVerFrameBorder(
rDev, rTPos, rBPos, rBorder,
aNoStyle, rTFromL, rTFromT, rTFromR, aNoStyle,
aNoStyle, rBFromL, rBFromB, rBFromR, aNoStyle,
pForceColor );
}
void DrawVerFrameBorder( OutputDevice& rDev,
const Point& rTPos, const Point& rBPos, const Style& rBorder, const Color* pForceColor )
{
if( rBorder.Prim() )
lclDrawVerFrameBorder( rDev, rTPos, rBPos, rBorder, BorderResult(), pForceColor );
}
// ----------------------------------------------------------------------------
void DrawVerFrameBorderSlanted( OutputDevice& rDev,
const Point& rTPos, const Point& rBPos, const Style& rBorder, const Color* pForceColor )
{
DBG_ASSERT( rTPos.Y() < rBPos.Y(), "svx::frame::DrawVerFrameBorderSlanted - wrong order of line ends" );
if( rBorder.Prim() && (rTPos.Y() < rBPos.Y()) )
{
if( rTPos.X() == rBPos.X() )
{
DrawVerFrameBorder( rDev, rTPos, rBPos, rBorder, pForceColor );
}
else
{
const LineEndResult aRes;
Style aScaled( rBorder );
aScaled.ScaleSelf( 1.0 / cos( GetVerDiagAngle( rTPos, rBPos ) ) );
lclSetColorToOutDev( rDev, aScaled, pForceColor );
lclDrawVerLine( rDev, rTPos, aRes, rBPos, aRes,
lclGetBeg( aScaled ), lclGetPrimEnd( aScaled ), aScaled.Dotted() );
if( aScaled.Secn() )
lclDrawVerLine( rDev, rTPos, aRes, rBPos, aRes,
lclGetSecnBeg( aScaled ), lclGetEnd( aScaled ), aScaled.Dotted() );
rDev.Pop(); // colors
}
}
}
// ============================================================================
void DrawDiagFrameBorders(
OutputDevice& rDev, const Rectangle& rRect, const Style& rTLBR, const Style& rBLTR,
const Style& rTLFromB, const Style& rTLFromR, const Style& rBRFromT, const Style& rBRFromL,
const Style& rBLFromT, const Style& rBLFromR, const Style& rTRFromB, const Style& rTRFromL,
const Color* pForceColor, bool bDiagDblClip )
{
if( rTLBR.Prim() || rBLTR.Prim() )
{
DiagBordersResult aResult;
lclLinkDiagFrameBorders( aResult, rTLBR, rBLTR,
rTLFromB, rTLFromR, rBRFromT, rBRFromL, rBLFromT, rBLFromR, rTRFromB, rTRFromL );
lclDrawDiagFrameBorders( rDev, rRect, rTLBR, rBLTR, aResult, pForceColor, bDiagDblClip );
}
}
// ============================================================================
} // namespace frame
} // namespace svx
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