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koffice/karbon/render/vkopainter.cc

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/* This file is part of the KDE project.
Copyright (C) 2001, 2002, 2003 The Karbon Developers
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
// kopainter/libart wrapper
#include "vkopainter.h"
#include "vstroke.h"
#include "vfill.h"
#include "vcolor.h"
#include "vpattern.h"
#include <tqpaintdevice.h>
#include <tqpixmap.h>
#include <tqpointarray.h>
#include <tqimage.h>
#include "libart_lgpl/art_vpath.h"
#include <libart_lgpl/art_bpath.h>
#include <libart_lgpl/art_vpath_bpath.h>
#include <libart_lgpl/art_svp_vpath.h>
#include <libart_lgpl/art_svp_vpath_stroke.h>
#include <libart_lgpl/art_svp.h>
#include <libart_lgpl/art_svp_ops.h>
#include <libart_lgpl/art_affine.h>
#include <libart_lgpl/art_svp_intersect.h>
#include <libart_lgpl/art_rect_svp.h>
#include <libart_lgpl/art_pathcode.h>
#include <libart_lgpl/art_vpath_dash.h>
#include "art_rgba_affine.h"
#include "art_render_misc.h"
#include <libart_lgpl/art_render_svp.h>
#include "art_rgb_svp.h"
#include "art_render_pattern.h"
#include <X11/Xlib.h>
#include <gdk-pixbuf-xlibrgb.h>
#include <kdebug.h>
#include <kglobal.h>
#include <kiconloader.h>
#include <math.h>
#include <KoPoint.h>
#include <KoRect.h>
#include <karbon_factory.h>
#include <karbon_resourceserver.h>
#define INITIAL_ALLOC 300
#define ALLOC_INCREMENT 100
VKoPainter::VKoPainter( TQPaintDevice *target, unsigned int w, unsigned int h, bool bDrawNodes )
: VPainter( target, w, h ), m_target( target ), m_bDrawNodes( bDrawNodes )
{
//kdDebug(38000) << "w : " << w << endl;
//kdDebug(38000) << "h : " << h << endl;
m_width = w;//( w > 0 ) ? w : target->width();
m_height= h;//( h > 0 ) ? h : target->height();
m_buffer = 0L;
m_path = 0L;
m_index = 0;
resize( m_width, m_height );
clear();
m_clipPaths.setAutoDelete( false );
m_stroke = 0L;
m_fill = 0L;
m_fillRule = evenOdd;
xlib_rgb_init_with_depth( target->x11Display(), XScreenOfDisplay( target->x11Display(),
target->x11Screen() ), target->x11Depth() );
gc = XCreateGC( target->x11Display(), target->handle(), 0, 0 );
m_zoomFactor = 1;
}
VKoPainter::VKoPainter( unsigned char *buffer, unsigned int w, unsigned int h, bool bDrawNodes )
: VPainter( 0L, w, h ), m_buffer( buffer ), m_bDrawNodes( bDrawNodes )
{
//kdDebug(38000) << "w : " << w << endl;
//kdDebug(38000) << "h : " << h << endl;
m_target = 0L;
m_width = w;
m_height= h;
m_path = 0L;
m_index = 0;
clear();
m_clipPaths.setAutoDelete( false );
m_stroke = 0L;
m_fill = 0L;
gc = 0L;
m_zoomFactor = 1;
}
VKoPainter::~VKoPainter()
{
// If we are in target mode, we created a buffer, else if we used the other ctor
// we didn't.
if( m_target )
art_free( m_buffer );
delete m_stroke;
delete m_fill;
if( m_path )
art_free( m_path );
if( gc )
XFreeGC( m_target->x11Display(), gc );
}
void
VKoPainter::resize( unsigned int w, unsigned int h )
{
if( !m_buffer || w != m_width || h != m_height )
{
// TODO : realloc?
art_free( m_buffer );
m_buffer = 0;
m_width = w;
m_height = h;
if ( m_width != 0 && m_height != 0 )
m_buffer = art_new( art_u8, m_width * m_height * 4 );
clear();
}
}
void
VKoPainter::begin()
{
}
void
VKoPainter::end()
{
//xlib_draw_rgb_image( m_target->handle(), gc, 0, 0, m_width, m_height,
// XLIB_RGB_DITHER_NONE, m_buffer, m_width * 4 );
xlib_draw_rgb_32_image( m_target->handle(), gc, 0, 0, m_width, m_height,
XLIB_RGB_DITHER_NONE, m_buffer, m_width * 4 );
/*xlib_draw_rgb_image( pix.handle(), gc, 0, 0, m_width, m_height,
XLIB_RGB_DITHER_NONE, m_buffer, m_width * 3 );
bitBlt( m_target, 0, 0, &pix, 0, 0, m_width, m_height );*/
}
void
VKoPainter::blit( const KoRect &r )
{
//kdDebug(38000) << "m_width : " << m_width << endl;
//kdDebug(38000) << "m_height : " << m_height << endl;
int x = KMAX( 0, int( r.x() ) );
int y = KMAX( 0, int( r.y() ) );
int width = KMIN( m_width, (unsigned int)KMAX( 0, int( r.x() + r.width() ) ) );
int height = KMIN( m_height, (unsigned int)KMAX( 0, int( r.y() + r.height() ) ) );
xlib_draw_rgb_32_image( m_target->handle(), gc, x, y, width - x, height - y,
XLIB_RGB_DITHER_NONE, m_buffer + (x * 4) + (y * m_width * 4), m_width * 4 );
}
void
VKoPainter::clear()
{
if( m_buffer )
memset( m_buffer, tqRgba( 255, 255, 255, 255 ), m_width * m_height * 4 );
}
void
VKoPainter::clear( const TQColor &c )
{
if( m_buffer )
memset( m_buffer, c.rgb(), m_width * m_height * 4 );
}
void
VKoPainter::clear( const KoRect &r, const TQColor &c )
{
unsigned int color = c.rgb();
int x = KMAX( 0, int( r.x() ) );
int y = KMAX( 0, int( r.y() ) );
int width = KMIN( m_width, (unsigned int)KMAX( 0, int( r.x() + r.width() ) ) );
int height = KMIN( m_height, (unsigned int)KMAX( 0, int( r.y() + r.height() ) ) );
if( m_buffer )
{
for( int i = y;i < height;i++)
memset( m_buffer + int( x * 4) + int( i * ( m_width * 4 ) ),
tqRgba( tqRed( color ), tqGreen( color ), tqBlue( color ), 100 ), int( width * 4 ) );
}
}
void
VKoPainter::setWorldMatrix( const TQWMatrix &mat )
{
m_matrix = mat;
}
void
VKoPainter::setZoomFactor( double zoomFactor )
{
m_zoomFactor = zoomFactor;
}
void
VKoPainter::ensureSpace( unsigned int newindex )
{
if( m_index == 0 )
{
if( !m_path )
m_path = art_new( ArtBpath, INITIAL_ALLOC );
m_alloccount = INITIAL_ALLOC;
}
else if( newindex > m_alloccount )
{
m_alloccount += ALLOC_INCREMENT;
m_path = art_renew( m_path, ArtBpath, m_alloccount );
}
}
void
VKoPainter::moveTo( const KoPoint &p )
{
ensureSpace( m_index + 1 );
m_path[ m_index ].code = ART_MOVETO;
m_path[ m_index ].x3 = p.x() * m_zoomFactor;
m_path[ m_index ].y3 = p.y() * m_zoomFactor;
m_index++;
}
void
VKoPainter::lineTo( const KoPoint &p )
{
ensureSpace( m_index + 1 );
m_path[ m_index ].code = ART_LINETO;
m_path[ m_index ].x3 = p.x() * m_zoomFactor;
m_path[ m_index ].y3 = p.y() * m_zoomFactor;
m_index++;
}
void
VKoPainter::curveTo( const KoPoint &p1, const KoPoint &p2, const KoPoint &p3 )
{
ensureSpace( m_index + 1 );
m_path[ m_index ].code = ART_CURVETO;
m_path[ m_index ].x1 = p1.x() * m_zoomFactor;
m_path[ m_index ].y1 = p1.y() * m_zoomFactor;
m_path[ m_index ].x2 = p2.x() * m_zoomFactor;
m_path[ m_index ].y2 = p2.y() * m_zoomFactor;
m_path[ m_index ].x3 = p3.x() * m_zoomFactor;
m_path[ m_index ].y3 = p3.y() * m_zoomFactor;
m_index++;
}
void
VKoPainter::newPath()
{
m_index = 0;
}
void
VKoPainter::setFillRule( VFillRule fillRule )
{
m_fillRule = fillRule;
}
void
VKoPainter::fillPath()
{
if( m_index == 0 ) return;
// find begin of last subpath
int find = -1;
for( int i = m_index - 1; i >= 0; i-- )
{
if( m_path[i].code == ART_MOVETO_OPEN || m_path[i].code == ART_MOVETO )
{
find = i;
break;
}
}
// for now, always close
if( find != -1 && ( m_path[ find ].x3 != m_path[ m_index - 1 ].x3 ||
m_path[ find ].y3 != m_path[ m_index - 1 ].y3 ) )
{
ensureSpace( m_index + 1 );
m_path[ m_index ].code = ART_LINETO;
m_path[ m_index ].x3 = m_path[ find ].x3;
m_path[ m_index ].y3 = m_path[ find ].y3;
m_index++;
m_path[ m_index ].code = ART_END;
}
else
m_path[ m_index++ ].code = ART_END;
if( m_fill && m_fill->type() != VFill::none )
{
ArtVpath *path = art_bez_path_to_vec( m_path , 0.25 );
drawVPath( path );
}
m_index--;
}
void
VKoPainter::strokePath()
{
if( m_index == 0 ) return;
if( m_stroke && m_stroke->lineWidth() == 0 )
return;
if( m_path[ m_index ].code != ART_END)
m_path[ m_index ].code = ART_END;
ArtVpath *path = art_bez_path_to_vec( m_path , 0.25 );
drawVPath( path );
}
void
VKoPainter::setClipPath()
{
ArtVpath *path;
path = art_bez_path_to_vec( m_path , 0.25 );
m_clipPaths.append( art_svp_from_vpath( path ) );
art_free( path );
}
void
VKoPainter::resetClipPath()
{
art_svp_free( m_clipPaths.current() );
m_clipPaths.remove();
}
void
VKoPainter::setPen( const VStroke &stroke )
{
delete m_stroke;
m_stroke = new VStroke;
*m_stroke = stroke;
}
void
VKoPainter::setPen( const TQColor &c )
{
delete m_stroke;
m_stroke = new VStroke;
float r = static_cast<float>( c.red() ) / 255.0;
float g = static_cast<float>( c.green() ) / 255.0;
float b = static_cast<float>( c.blue() ) / 255.0;
VColor color;
color.set( r, g, b );
m_stroke->setColor( color );
}
void
VKoPainter::setPen( Qt::PenStyle style )
{
if( style == TQt::NoPen )
{
delete m_stroke;
m_stroke = 0L;
}
}
void
VKoPainter::setBrush( const TQColor &c )
{
delete m_fill;
m_fill = new VFill;
float r = static_cast<float>( c.red() ) / 255.0;
float g = static_cast<float>( c.green() ) / 255.0;
float b = static_cast<float>( c.blue() ) / 255.0;
VColor color;
color.set( r, g, b );
m_fill->setColor( color );
}
void
VKoPainter::setBrush( TQt::BrushStyle style )
{
if( style == TQt::NoBrush )
{
delete m_fill;
m_fill = 0L;
}
}
void
VKoPainter::setBrush( const VFill &fill )
{
delete m_fill;
m_fill = new VFill;
*m_fill = fill;
}
void
VKoPainter::save()
{
}
void
VKoPainter::restore()
{
}
void
VKoPainter::setRasterOp( TQt::RasterOp )
{
}
void
VKoPainter::clampToViewport( int &x0, int &y0, int &x1, int &y1 )
{
// clamp to viewport
x0 = kMax( x0, 0 );
x0 = kMin( x0, int( m_width ) );
y0 = kMax( y0, 0 );
y0 = kMin( y0, int ( m_height ) );
x1 = kMax( x1, 0 );
x1 = kMin( x1, int( m_width ) );
y1 = kMax( y1, 0 );
y1 = kMin( y1, int( m_height ) );
}
void
VKoPainter::clampToViewport( const ArtSVP &svp, int &x0, int &y0, int &x1, int &y1 )
{
// get SVP bbox
ArtDRect bbox;
art_drect_svp( &bbox, &svp );
// Remove comments if we really decide for SVP bbox usage
//m_bbox = KoRect( bbox.x0, bbox.y0, bbox.x1 - bbox.x0, bbox.y1 - bbox.y0 );
// clamp to viewport
x0 = int( bbox.x0 );
x0 = kMax( x0, 0 );
x0 = kMin( x0, int( m_width ) );
y0 = int( bbox.y0 );
y0 = kMax( y0, 0 );
y0 = kMin( y0, int ( m_height ) );
x1 = int( bbox.x1 ) + 1;
x1 = kMax( x1, 0 );
x1 = kMin( x1, int( m_width ) );
y1 = int( bbox.y1 ) + 1;
y1 = kMax( y1, 0 );
y1 = kMin( y1, int( m_height ) );
}
void
VKoPainter::drawVPath( ArtVpath *vec )
{
ArtSVP *strokeSvp = 0L;
ArtSVP *fillSvp = 0L;
// set up world matrix
double affine[6];
affine[0] = m_matrix.m11();
affine[1] = 0;//m_matrix.m12();
affine[2] = 0;//m_matrix.m21();
affine[3] = m_matrix.m22();
affine[4] = m_matrix.dx();
affine[5] = m_matrix.dy();
ArtVpath *temp = art_vpath_affine_transform( vec, affine );
art_free( vec );
vec = temp;
int af = 0;
int as = 0;
art_u32 fillColor = 0;
// filling
TQColor color;
if( m_fill && m_fill->type() != VFill::none )
{
color = m_fill->color();
af = tqRound( 255 * m_fill->color().opacity() );
fillColor = ( 0 << 24 ) | ( color.blue() << 16 ) | ( color.green() << 8 ) | color.red();
ArtSvpWriter *swr;
ArtSVP *temp;
temp = art_svp_from_vpath( vec );
if( m_fillRule == evenOdd )
swr = art_svp_writer_rewind_new( ART_WIND_RULE_ODDEVEN );
else
swr = art_svp_writer_rewind_new( ART_WIND_RULE_NONZERO );
art_svp_intersector( temp, swr );
fillSvp = art_svp_writer_rewind_reap( swr );
art_svp_free( temp );
}
art_u32 strokeColor = 0;
// stroke
if( m_stroke && m_stroke->type() != VStroke::none )
{
ArtPathStrokeCapType capStyle = ART_PATH_STROKE_CAP_BUTT;
ArtPathStrokeJoinType joinStyle = ART_PATH_STROKE_JOIN_MITER;
// TODO : non rgb support ?
color = m_stroke->color();
as = tqRound( 255 * m_stroke->color().opacity() );
strokeColor = ( 0 << 24 ) | ( color.blue() << 16 ) | ( color.green() << 8 ) | color.red();
double ratio = m_zoomFactor;//sqrt(pow(affine[0], 2) + pow(affine[3], 2)) / sqrt(2);
if( m_stroke->dashPattern().array().count() > 0 )
{
// there are dashes to be rendered
ArtVpathDash dash;
dash.offset = m_stroke->dashPattern().offset() * ratio;
dash.n_dash = m_stroke->dashPattern().array().count();
double *dashes = new double[ dash.n_dash ];
for( int i = 0; i < dash.n_dash; i++ )
dashes[i] = m_stroke->dashPattern().array()[i] * ratio;
dash.dash = dashes;
// get the dashed VPath and use that for the stroke render operation
ArtVpath *vec2 = art_vpath_dash( vec, &dash );
art_free( vec );
vec = vec2;
delete [] dashes;
}
// caps translation karbon -> art
if( m_stroke->lineCap() == VStroke::capRound )
capStyle = ART_PATH_STROKE_CAP_ROUND;
else if( m_stroke->lineCap() == VStroke::capSquare )
capStyle = ART_PATH_STROKE_CAP_SQUARE;
// join translation karbon -> art
if( m_stroke->lineJoin() == VStroke::joinRound )
joinStyle = ART_PATH_STROKE_JOIN_ROUND;
else if( m_stroke->lineJoin() == VStroke::joinBevel )
joinStyle = ART_PATH_STROKE_JOIN_BEVEL;
// zoom stroke width;
strokeSvp = art_svp_vpath_stroke( vec, joinStyle, capStyle, ratio * m_stroke->lineWidth(), m_stroke->miterLimit(), 0.25 );
}
int x0, y0, x1, y1;
// render the svp to the buffer
if( strokeSvp )
{
if( m_stroke && m_stroke->type() == VStroke::grad )
applyGradient( strokeSvp, false );
else if( m_stroke && m_stroke->type() == VStroke::patt )
applyPattern( strokeSvp, false );
else
{
clampToViewport( *strokeSvp, x0, y0, x1, y1 );
if( x0 != x1 && y0 != y1 )
art_rgb_svp_alpha_( strokeSvp, x0, y0, x1, y1, strokeColor, as, m_buffer + x0 * 4 + y0 * m_width * 4, m_width * 4, 0 );
}
art_svp_free( strokeSvp );
}
if( fillSvp )
{
if( m_fill && m_fill->type() == VFill::grad )
applyGradient( fillSvp, true );
else if( m_fill && m_fill->type() == VFill::patt )
applyPattern( fillSvp, true );
else
{
clampToViewport( *fillSvp, x0, y0, x1, y1 );
if( x0 != x1 && y0 != y1 )
art_rgb_svp_alpha_( fillSvp, x0, y0, x1, y1, fillColor, af, m_buffer + x0 * 4 + y0 * m_width * 4, m_width * 4, 0 );
}
art_svp_free( fillSvp );
}
//delete m_stroke;
//m_stroke = 0L;
//delete m_fill;
//m_fill = 0L;
art_free( vec );
}
void
VKoPainter::applyPattern( ArtSVP *svp, bool fill )
{
if(!svp) {
return;
}
int x0, y0, x1, y1;
clampToViewport( *svp, x0, y0, x1, y1 );
ArtRender *render = 0L;
VPattern pat = fill ? m_fill->pattern() : m_stroke->pattern();
if( !pat.isValid() ) {
pat.load( TDEGlobal::iconLoader()->iconPath( "karbon.png", -KIcon::SizeMedium ) ); }
if( !pat.isValid() ) {
pat = *(dynamic_cast<VPattern *>(KarbonFactory::rServer()->patterns().getFirst() )) ;}
ArtPattern *pattern = art_new( ArtPattern, 1 );
double dx = ( pat.vector().x() - pat.origin().x() ) * m_zoomFactor;
double dy = ( pat.vector().y() - pat.origin().y() ) * m_zoomFactor;
pattern->twidth = pat.tileWidth();
pattern->theight = pat.tileHeight();
pattern->buffer = pat.pixels();
pattern->opacity = fill ? short( m_fill->color().opacity() * 255.0 ) : short( m_stroke->color().opacity() * 255.0 );
pattern->angle = atan2( -dy, dx );
if( x0 != x1 && y0 != y1 )
{
render = art_render_new( x0, y0, x1, y1, m_buffer + 4 * int(x0) + m_width * 4 * int(y0), m_width * 4, 3, 8, ART_ALPHA_PREMUL, 0 );
art_render_svp( render, svp );
art_render_pattern( render, pattern, ART_FILTER_HYPER );
}
if( render )
art_render_invoke( render );
art_free( pattern );
}
void
VKoPainter::applyGradient( ArtSVP *svp, bool fill )
{
int x0, y0, x1, y1;
clampToViewport( *svp, x0, y0, x1, y1 );
ArtRender *render = 0L;
VGradient gradient = fill ? m_fill->gradient() : m_stroke->gradient();
float opa = fill ? m_fill->color().opacity() : m_stroke->color().opacity();
if( gradient.type() == VGradient::linear )
{
ArtGradientLinear *linear = art_new( ArtGradientLinear, 1 );
// TODO : make variable
if( gradient.repeatMethod() == VGradient::none )
linear->spread = ART_GRADIENT_PAD;
else if( gradient.repeatMethod() == VGradient::repeat )
linear->spread = ART_GRADIENT_REPEAT;
else if( gradient.repeatMethod() == VGradient::reflect )
linear->spread = ART_GRADIENT_REFLECT;
double _x1 = gradient.origin().x();
double _x2 = gradient.vector().x();
double _y2 = gradient.origin().y();
double _y1 = gradient.vector().y();
double dx = ( _x2 - _x1 ) * m_zoomFactor;
_y1 = m_matrix.m22() * _y1 + m_matrix.dy() / m_zoomFactor;
_y2 = m_matrix.m22() * _y2 + m_matrix.dy() / m_zoomFactor;
double dy = ( _y1 - _y2 ) * m_zoomFactor;
double scale = 1.0 / ( dx * dx + dy * dy );
linear->a = dx * scale;
linear->b = dy * scale;
linear->c = -( ( _x1 * m_zoomFactor + m_matrix.dx() ) * linear->a +
( _y2 * m_zoomFactor ) * linear->b );
// get stop array
int offsets = -1;
linear->stops = buildStopArray( gradient, offsets );
linear->n_stops = offsets;
if( x0 != x1 && y0 != y1 && offsets >= 0 )
{
render = art_render_new( x0, y0, x1, y1, m_buffer + 4 * int(x0) + m_width * 4 * int(y0), m_width * 4, 3, 8, ART_ALPHA_PREMUL, 0 );
int opacity = int( opa * 255.0 );
art_render_svp( render, svp );
art_render_mask_solid (render, (opacity << 8) + opacity + (opacity >> 7));
art_karbon_render_gradient_linear( render, linear, ART_FILTER_NEAREST );
art_render_invoke( render );
}
art_free( linear->stops );
art_free( linear );
}
else if( gradient.type() == VGradient::radial )
{
ArtGradientRadial *radial = art_new( ArtGradientRadial, 1 );
// TODO : make variable
if( gradient.repeatMethod() == VGradient::none )
radial->spread = ART_GRADIENT_PAD;
else if( gradient.repeatMethod() == VGradient::repeat )
radial->spread = ART_GRADIENT_REPEAT;
else if( gradient.repeatMethod() == VGradient::reflect )
radial->spread = ART_GRADIENT_REFLECT;
radial->affine[0] = m_matrix.m11();
radial->affine[1] = m_matrix.m12();
radial->affine[2] = m_matrix.m21();
radial->affine[3] = m_matrix.m22();
radial->affine[4] = m_matrix.dx();
radial->affine[5] = m_matrix.dy();
double cx = gradient.origin().x() * m_zoomFactor;
double cy = gradient.origin().y() * m_zoomFactor;
double fx = gradient.focalPoint().x() * m_zoomFactor;
double fy = gradient.focalPoint().y() * m_zoomFactor;
double r = sqrt( pow( gradient.vector().x() - gradient.origin().x(), 2 ) +
pow( gradient.vector().y() - gradient.origin().y(), 2 ) );
r *= m_zoomFactor;
radial->fx = (fx - cx) / r;
radial->fy = (fy - cy) / r;
double aff1[6], aff2[6];
art_affine_scale( aff1, r, r);
art_affine_translate( aff2, cx, cy );
art_affine_multiply( aff1, aff1, aff2 );
art_affine_multiply( aff1, aff1, radial->affine );
art_affine_invert( radial->affine, aff1 );
// get stop array
int offsets = -1;
radial->stops = buildStopArray( gradient, offsets );
radial->n_stops = offsets;
if( x0 != x1 && y0 != y1 && offsets >= 0 )
{
render = art_render_new( x0, y0, x1, y1, m_buffer + 4 * x0 + m_width * 4 * y0, m_width * 4, 3, 8, ART_ALPHA_PREMUL, 0 );
int opacity = int( opa * 255.0 );
art_render_svp( render, svp );
art_render_mask_solid (render, (opacity << 8) + opacity + (opacity >> 7));
art_karbon_render_gradient_radial( render, radial, ART_FILTER_NEAREST );
art_render_invoke( render );
}
art_free( radial->stops );
art_free( radial );
}
else if( gradient.type() == VGradient::conic )
{
ArtGradientConical *conical = art_new( ArtGradientConical, 1 );
// TODO : make variable
if( gradient.repeatMethod() == VGradient::none )
conical->spread = ART_GRADIENT_PAD;
else if( gradient.repeatMethod() == VGradient::repeat )
conical->spread = ART_GRADIENT_REPEAT;
else if( gradient.repeatMethod() == VGradient::reflect )
conical->spread = ART_GRADIENT_REFLECT;
double cx = gradient.origin().x() * m_zoomFactor;
cx = m_matrix.m11() * cx + m_matrix.dx();
double cy = gradient.origin().y() * m_zoomFactor;
cy = m_matrix.m22() * cy + m_matrix.dy();
double r = sqrt( pow( gradient.vector().x() - gradient.origin().x(), 2 ) +
pow( gradient.vector().y() - gradient.origin().y(), 2 ) );
r *= m_zoomFactor;
conical->cx = cx;
conical->cy = cy;
conical->r = r;
// get stop array
int offsets = -1;
conical->stops = buildStopArray( gradient, offsets );
conical->n_stops = offsets;
if( x0 != x1 && y0 != y1 && offsets >= 0 )
{
render = art_render_new( x0, y0, x1, y1, m_buffer + 4 * x0 + m_width * 4 * y0, m_width * 4, 3, 8, ART_ALPHA_PREMUL, 0 );
int opacity = int( opa * 255.0 );
art_render_svp( render, svp );
art_render_mask_solid (render, (opacity << 8) + opacity + (opacity >> 7));
art_karbon_render_gradient_conical( render, conical, ART_FILTER_NEAREST );
art_render_invoke( render );
}
art_free( conical->stops );
art_free( conical );
}
}
ArtGradientStop *
VKoPainter::buildStopArray( VGradient &gradient, int &offsets )
{
// TODO : make this generic
TQPtrVector<VColorStop> colorStops = gradient.colorStops();
offsets = colorStops.count();
ArtGradientStop *stopArray = art_new( ArtGradientStop, offsets * 2 - 1 );
for( int offset = 0 ; offset < offsets ; offset++ )
{
double ramp = colorStops[ offset ]->rampPoint;
//double mid = colorStops[ offset ]->midPoint;
stopArray[ offset * 2 ].offset = ramp;
TQColor qStopColor = colorStops[ offset ]->color;
int r = tqRed( qStopColor.rgb() );
int g = tqGreen( qStopColor.rgb() );
int b = tqBlue( qStopColor.rgb() );
art_u32 rgba = (r << 24) | (g << 16) | (b << 8) | tqAlpha(qStopColor.rgb());
/* convert from separated to premultiplied alpha */
int a = int( colorStops[ offset]->color.opacity() * 255.0 );
r = (rgba >> 24) * a + 0x80;
r = (r + (r >> 8)) >> 8;
g = ((rgba >> 16) & 0xff) * a + 0x80;
g = (g + (g >> 8)) >> 8;
b = ((rgba >> 8) & 0xff) * a + 0x80;
b = (b + (b >> 8)) >> 8;
stopArray[ offset * 2 ].color[ 0 ] = ART_PIX_MAX_FROM_8(r);
stopArray[ offset * 2 ].color[ 1 ] = ART_PIX_MAX_FROM_8(g);
stopArray[ offset * 2 ].color[ 2 ] = ART_PIX_MAX_FROM_8(b);
stopArray[ offset * 2 ].color[ 3 ] = ART_PIX_MAX_FROM_8(a);
if( offset + 1 != offsets )
{
stopArray[ offset * 2 + 1 ].offset = ramp + ( colorStops[ offset + 1 ]->rampPoint - ramp ) * colorStops[ offset ]->midPoint;
TQColor qStopColor2 = colorStops[ offset + 1 ]->color;
rgba = int(r + ((tqRed(qStopColor2.rgb()) - r)) * 0.5) << 24 |
int(g + ((tqGreen(qStopColor2.rgb()) - g)) * 0.5) << 16 |
int(b + ((tqBlue(qStopColor2.rgb()) - b)) * 0.5) << 8 |
tqAlpha(qStopColor2.rgb());
/* convert from separated to premultiplied alpha */
int a = int( colorStops[ offset]->color.opacity() * 255.0 );
r = (rgba >> 24) * a + 0x80;
r = (r + (r >> 8)) >> 8;
g = ((rgba >> 16) & 0xff) * a + 0x80;
g = (g + (g >> 8)) >> 8;
b = ((rgba >> 8) & 0xff) * a + 0x80;
b = (b + (b >> 8)) >> 8;
stopArray[ offset * 2 + 1 ].color[ 0 ] = ART_PIX_MAX_FROM_8(r);
stopArray[ offset * 2 + 1 ].color[ 1 ] = ART_PIX_MAX_FROM_8(g);
stopArray[ offset * 2 + 1 ].color[ 2 ] = ART_PIX_MAX_FROM_8(b);
stopArray[ offset * 2 + 1 ].color[ 3 ] = ART_PIX_MAX_FROM_8(a);
}
}
offsets = offsets * 2 - 1;
return stopArray;
}
void
VKoPainter::drawNode( const KoPoint& p, int width )
{
if( !m_bDrawNodes ) return;
KoPoint _p( m_matrix.map( TQPoint( int( p.x() * m_zoomFactor ), int( p.y() * m_zoomFactor ) ) ) );
int x1 = int( _p.x() - width );
int x2 = int( _p.x() + width );
int y1 = int( _p.y() - width );
int y2 = int( _p.y() + width );
clampToViewport( x1, y1, x2, y2 );
int baseindex = 4 * x1 + ( m_width * 4 * y1 );
TQColor color = m_fill->color();
for( int i = 0; i < y2 - y1; i++ )
{
for( int j = 0; j < x2 - x1; j++ )
{
m_buffer[ baseindex + 4 * j + ( m_width * 4 * i ) ] = color.red();
m_buffer[ baseindex + 4 * j + ( m_width * 4 * i ) + 1 ] = color.green();
m_buffer[ baseindex + 4 * j + ( m_width * 4 * i ) + 2 ] = color.blue();
m_buffer[ baseindex + 4 * j + ( m_width * 4 * i ) + 3 ] = 0xFF;
}
}
}
void
VKoPainter::drawImage( const TQImage &image, const TQWMatrix &affine )
{
// set up world matrix
double affineresult[6];
affineresult[0] = affine.m11() * m_matrix.m11() * m_zoomFactor + affine.m12() * m_matrix.m21();
affineresult[1] = (affine.m11() * m_matrix.m12() + affine.m12() * m_matrix.m22() ) * m_zoomFactor;
affineresult[2] = (affine.m21() * m_matrix.m11() + affine.m22() * m_matrix.m21() ) * m_zoomFactor;
affineresult[3] = affine.m22() * m_matrix.m22() * m_zoomFactor + affine.m21() * m_matrix.m12();
affineresult[4] = m_matrix.dx() + affine.dx() * m_zoomFactor;
affineresult[5] = m_matrix.dy() - affine.dy() * m_zoomFactor;
//art_affine_scale( affineresult, m_zoomFactor, m_zoomFactor);
/*kdDebug(38000) << "affineresult[0] : " << affineresult[0] << endl;
kdDebug(38000) << "affineresult[1] : " << affineresult[1] << endl;
kdDebug(38000) << "affineresult[2] : " << affineresult[2] << endl;
kdDebug(38000) << "affineresult[3] : " << affineresult[3] << endl;
kdDebug(38000) << "affineresult[4] : " << affineresult[4] << endl;
kdDebug(38000) << "affineresult[5] : " << affineresult[5] << endl;
kdDebug(38000) << "m_matrix.dx() : " << m_matrix.dx() << endl;
kdDebug(38000) << "affine.dx() : " << affine.dx() << endl;
kdDebug(38000) << "image.height() : " << image.height() << endl;*/
art_rgba_affine( m_buffer, 0, 0, m_width, m_height, m_width * 4,
image.bits(), image.width(), image.height(), image.width() * 4,
affineresult, ART_FILTER_NEAREST, 0L );
}
void
VKoPainter::drawRect( const KoRect &r )
{
newPath();
moveTo( r.topLeft() );
lineTo( r.topRight() );
lineTo( r.bottomRight() );
lineTo( r.bottomLeft() );
lineTo( r.topLeft() );
fillPath();
strokePath();
}
void
VKoPainter::drawRect( double x, double y, double w, double h )
{
drawRect( KoRect( x, y, w, h ) );
}
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