/**
 ******************************************************************************
 *
 * @file       stylehelper.h
 * @author     The OpenPilot Team, http://www.openpilot.org Copyright (C) 2010.
 *             Parts by Nokia Corporation (qt-info@nokia.com) Copyright (C) 2009.
 * @brief
 * @see        The GNU Public License (GPL) Version 3
 * @defgroup
 * @{
 *
 *****************************************************************************/
/*
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * 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 General Public License
 * for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

#ifndef STYLEHELPER_H
#define STYLEHELPER_H

#include "utils_global.h"

#include <QStyle>

QT_BEGIN_NAMESPACE
class QPalette;
class QPainter;
class QRect;
// Note, this is exported but in a private header as qtopengl depends on it.
// We should consider adding this as a public helper function.
void qt_blurImage(QPainter *p, QImage &blurImage, qreal radius, bool quality, bool alphaOnly, int transposed = 0);
QT_END_NAMESPACE

// Helper class holding all custom color values

namespace Utils {
class QTCREATOR_UTILS_EXPORT StyleHelper {
public:
    static const unsigned int DEFAULT_BASE_COLOR   = 0x666666;
    static const int progressFadeAnimationDuration = 600;

    // Height of the project explorer navigation bar
    static int navigationWidgetHeight()
    {
        return 24;
    }
    static qreal sidebarFontSize();
    static QPalette sidebarFontPalette(const QPalette &original);

    // This is our color table, all colors derive from baseColor
    static QColor requestedBaseColor()
    {
        return m_requestedBaseColor;
    }
    static QColor baseColor(bool lightColored = false);
    static QColor panelTextColor(bool lightColored = false);
    static QColor highlightColor(bool lightColored = false);
    static QColor shadowColor(bool lightColored = false);
    static QColor borderColor(bool lightColored = false);
    static QColor buttonTextColor()
    {
        return QColor(0x4c4c4c);
    }
    static QColor mergedColors(const QColor &colorA, const QColor &colorB, int factor = 50);

    static QColor sidebarHighlight()
    {
        return QColor(255, 255, 255, 40);
    }
    static QColor sidebarShadow()
    {
        return QColor(0, 0, 0, 40);
    }

    // Sets the base color and makes sure all top level widgets are updated
    static void setBaseColor(const QColor &color);

    // Draws a shaded anti-aliased arrow
    static void drawArrow(QStyle::PrimitiveElement element, QPainter *painter, const QStyleOption *option);

    // Gradients used for panels
    static void horizontalGradient(QPainter *painter, const QRect &spanRect, const QRect &clipRect, bool lightColored = false);
    static void verticalGradient(QPainter *painter, const QRect &spanRect, const QRect &clipRect, bool lightColored = false);
    static void menuGradient(QPainter *painter, const QRect &spanRect, const QRect &clipRect);
    static bool usePixmapCache()
    {
        return true;
    }

    static void drawIconWithShadow(const QIcon &icon, const QRect &rect, QPainter *p, QIcon::Mode iconMode,
                                   int dipRadius = 3, const QColor &color = QColor(0, 0, 0, 130),
                                   const QPoint &dipOffset = QPoint(1, -2));
    static void drawCornerImage(const QImage &img, QPainter *painter, QRect rect,
                                int left = 0, int top = 0, int right = 0, int bottom = 0);

    static void tintImage(QImage &img, const QColor &tintColor);
    static QLinearGradient statusBarGradient(const QRect &statusBarRect);

private:
    static QColor m_baseColor;
    static QColor m_requestedBaseColor;
};
} // namespace Utils
#endif // STYLEHELPER_H