| -rw-r--r-- | libqtaux/ocolorbutton.cpp | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/libqtaux/ocolorbutton.cpp b/libqtaux/ocolorbutton.cpp new file mode 100644 index 0000000..d2ad873 --- a/dev/null +++ b/libqtaux/ocolorbutton.cpp @@ -0,0 +1,150 @@ +/* + This file is part of the Opie Project + Copyright (C) Robert Griebl <sandman@handhelds.org> + =. Copyright (C) The Opie Team <opie-devel@handhelds.org> + .=l. + .>+-= + _;:, .> :=|. This program is free software; you can +.> <`_, > . <= redistribute it and/or modify it under +:`=1 )Y*s>-.-- : the terms of the GNU Library General Public +.="- .-=="i, .._ License as published by the Free Software + - . .-<_> .<> Foundation; either version 2 of the License, + ._= =} : or (at your option) any later version. + .%`+i> _;_. + .i_,=:_. -<s. This program 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., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. +*/ + +#include "ocolorpopupmenu.h" +#include "ocolorbutton.h" + +/* OPIE */ +#include <qpe/resource.h> + +/* QT */ +#include <qcolor.h> +#include <qpixmap.h> +#include <qimage.h> + +using namespace Opie; + +struct OColorButtonPrivate +{ + QPopupMenu *m_menu; + QColor m_color; +}; + +/** + * This concstructs a Color Button with @param color as the start color + * It'll use a OColorPopupMenu internally + * + * @param parent The parent of the Color Button + * @param color The color from where to start on + * @param name @see QObject + */ +OColorButton::OColorButton ( QWidget *parent, const QColor &color, const char *name ) + : QPushButton ( parent, name ) +{ + d = new OColorButtonPrivate; + + d-> m_menu = new OColorPopupMenu ( color, 0, 0 ); + setPopup ( d-> m_menu ); + // setPopupDelay ( 0 ); + connect ( d-> m_menu, SIGNAL( colorSelected ( const QColor & )), this, SLOT( updateColor ( const QColor & ))); + + updateColor ( color ); + + QSize s = sizeHint ( ) + QSize ( 12, 0 ); + setMinimumSize ( s ); + setMaximumSize ( s. width ( ) * 2, s. height ( )); +} + +/** + * This destructs the object + */ +OColorButton::~OColorButton ( ) +{ + delete d; +} + +/** + * @return Returns the current color of the button + */ +QColor OColorButton::color ( ) const +{ + return d-> m_color; +} + +/** + * This method sets the color of the button + * @param c The color to be set. + */ +void OColorButton::setColor ( const QColor &c ) +{ + updateColor ( c ); +} + +/** + * @internal + */ +void OColorButton::updateColor ( const QColor &c ) +{ + d-> m_color = c; + + QImage img ( 16, 16, 32 ); + img. fill ( 0 ); + + int r, g, b; + c. rgb ( &r, &g, &b ); + + int w = img. width ( ); + int h = img. height ( ); + + int dx = w * 20 / 100; // 15% + int dy = h * 20 / 100; + + for ( int y = 0; y < h; y++ ) + { + for ( int x = 0; x < w; x++ ) + { + double alpha = 1.0; + + if ( x < dx ) + alpha *= ( double ( x + 1 ) / dx ); + else if ( x >= w - dx ) + alpha *= ( double ( w - x ) / dx ); + if ( y < dy ) + alpha *= ( double ( y + 1 ) / dy ); + else if ( y >= h - dy ) + alpha *= ( double ( h - y ) / dy ); + + int a = int ( alpha * 255.0 ); + if ( a < 0 ) + a = 0; + if ( a > 255 ) + a = 255; + + img. setPixel ( x, y, qRgba ( r, g, b, a )); + } + } + img. setAlphaBuffer ( true ); + + QPixmap pix; + pix. convertFromImage ( img ); + setPixmap ( pix ); + + emit colorSelected ( c ); +} + |