diff options
Diffstat (limited to 'src/gui/painting/qgrayraster.c')
-rw-r--r-- | src/gui/painting/qgrayraster.c | 74 |
1 files changed, 50 insertions, 24 deletions
diff --git a/src/gui/painting/qgrayraster.c b/src/gui/painting/qgrayraster.c index 614d95ace1..b536028fe3 100644 --- a/src/gui/painting/qgrayraster.c +++ b/src/gui/painting/qgrayraster.c @@ -1,7 +1,7 @@ /**************************************************************************** ** -** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies). -** Contact: http://www.qt-project.org/legal +** Copyright (C) 2015 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ ** ** This file is part of the QtGui module of the Qt Toolkit. ** @@ -10,9 +10,9 @@ ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and Digia. For licensing terms and -** conditions see http://qt.digia.com/licensing. For further information -** use the contact form at http://qt.digia.com/contact-us. +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see http://www.qt.io/terms-conditions. For further +** information use the contact form at http://www.qt.io/contact-us. ** ** GNU Lesser General Public License Usage ** Alternatively, this file may be used under the terms of the GNU Lesser @@ -23,8 +23,8 @@ ** requirements will be met: https://www.gnu.org/licenses/lgpl.html and ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. ** -** In addition, as a special exception, Digia gives you certain additional -** rights. These rights are described in the Digia Qt LGPL Exception +** As a special exception, The Qt Company gives you certain additional +** rights. These rights are described in The Qt Company LGPL Exception ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. ** ** $QT_END_LICENSE$ @@ -480,10 +480,10 @@ ras.area = 0; ras.cover = 0; + ras.ex = ex; + ras.ey = ey; } - ras.ex = ex; - ras.ey = ey; ras.invalid = ( (unsigned)ey >= (unsigned)ras.count_ey || ex >= ras.count_ex ); } @@ -670,38 +670,64 @@ } /* vertical line - avoid calling gray_render_scanline */ - incr = 1; - if ( dx == 0 ) { TCoord ex = TRUNC( ras.x ); TCoord two_fx = (TCoord)( ( ras.x - SUBPIXELS( ex ) ) << 1 ); - TPos area; + TPos area, max_ey1; first = ONE_PIXEL; if ( dy < 0 ) - { first = 0; - incr = -1; - } delta = (int)( first - fy1 ); ras.area += (TArea)two_fx * delta; ras.cover += delta; - ey1 += incr; - - gray_set_cell( &ras, ex, ey1 ); delta = (int)( first + first - ONE_PIXEL ); area = (TArea)two_fx * delta; - while ( ey1 != ey2 ) - { - ras.area += area; - ras.cover += delta; - ey1 += incr; + max_ey1 = ras.count_ey + ras.min_ey; + if (dy < 0) { + if (ey1 > max_ey1) { + ey1 = (max_ey1 > ey2) ? max_ey1 : ey2; + gray_set_cell( &ras, ex, ey1 ); + } else { + ey1--; + gray_set_cell( &ras, ex, ey1 ); + } + while ( ey1 > ey2 && ey1 >= ras.min_ey) + { + ras.area += area; + ras.cover += delta; + ey1--; + + gray_set_cell( &ras, ex, ey1 ); + } + if (ey1 != ey2) { + ey1 = ey2; + gray_set_cell( &ras, ex, ey1 ); + } + } else { + if (ey1 < ras.min_ey) { + ey1 = (ras.min_ey < ey2) ? ras.min_ey : ey2; + gray_set_cell( &ras, ex, ey1 ); + } else { + ey1++; + gray_set_cell( &ras, ex, ey1 ); + } + while ( ey1 < ey2 && ey1 < max_ey1) + { + ras.area += area; + ras.cover += delta; + ey1++; - gray_set_cell( &ras, ex, ey1 ); + gray_set_cell( &ras, ex, ey1 ); + } + if (ey1 != ey2) { + ey1 = ey2; + gray_set_cell( &ras, ex, ey1 ); + } } delta = (int)( fy2 - ONE_PIXEL + first ); |