Logo Search packages:      
Sourcecode: qt4-x11 version File versions  Download package


** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
** This file is part of the demonstration applications of the Qt Toolkit.
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License versions 2.0 or 3.0 as published by the Free
** Software Foundation and appearing in the file LICENSE.GPL included in
** the packaging of this file.  Please review the following information
** to ensure GNU General Public Licensing requirements will be met:
** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
** http://www.gnu.org/copyleft/gpl.html.  In addition, as a special
** exception, Nokia gives you certain additional rights. These rights
** are described in the Nokia Qt GPL Exception version 1.3, included in
** the file GPL_EXCEPTION.txt in this package.
** Qt for Windows(R) Licensees
** As a special exception, Nokia, as the sole copyright holder for Qt
** Designer, grants users of the Qt/Eclipse Integration plug-in the
** right for the Qt/Eclipse Integration to link to functionality
** provided by Qt Designer and its related libraries.
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.

#include "headingitem.h"
#include "colors.h"

HeadingItem::HeadingItem(const QString &text, QGraphicsScene *scene, QGraphicsItem *parent)
    : DemoItem(scene, parent)
    this->text = text;
    this->noSubPixeling = true;

QImage *HeadingItem::createImage(const QMatrix &matrix) const
    float sx = qMin(matrix.m11(), matrix.m22());
    float sy = matrix.m22() < sx ? sx : matrix.m22();
    QFontMetrics fm(Colors::headingFont());

    float w = fm.width(this->text) + 1;
    float h = fm.height();
    float xShadow = 3.0f;
    float yShadow = 3.0f;

    QImage *image = new QImage(int((w + xShadow) * sx), int((h + yShadow) * sy), QImage::Format_ARGB32_Premultiplied);
    image->fill(QColor(0, 0, 0, 0).rgba());
    QPainter painter(image);
    painter.scale(sx, sy);

    //draw shadow
    QLinearGradient brush_shadow(xShadow, yShadow, w, yShadow);
    if (Colors::useEightBitPalette)
        brush_shadow.setColorAt(0.0f, QColor(0, 0, 0));
        brush_shadow.setColorAt(0.0f, QColor(0, 0, 0, 100));
    QPen pen_shadow;
    painter.drawText(int(xShadow), int(yShadow), int(w), int(h), Qt::AlignLeft, this->text);

    // draw text
    QLinearGradient brush_text(0, 0, w, w);
    brush_text.setColorAt(0.0f, QColor(255, 255, 255));
    brush_text.setColorAt(0.2f, QColor(255, 255, 255));
    brush_text.setColorAt(0.5f, QColor(190, 190, 190));
    QPen pen_text;
    painter.drawText(0, 0, int(w), int(h), Qt::AlignLeft, this->text);
    return image;

void HeadingItem::animationStarted(int)
    this->noSubPixeling = false;

void HeadingItem::animationStopped(int)
    this->noSubPixeling = true;

Generated by  Doxygen 1.6.0   Back to index