242 lines
7.8 KiB
C++
242 lines
7.8 KiB
C++
/**************************************************************************
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**
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** This file is part of Qt Creator
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**
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** Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
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**
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** Commercial Usage
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**
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt Commercial License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Nokia.
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**
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** GNU Lesser General Public License Usage
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**
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** If you are unsure which license is appropriate for your use, please
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** contact the sales department at http://qt.nokia.com/contact.
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**
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**************************************************************************/
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#include "stylehelper.h"
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#include <QtGui/QPixmapCache>
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#include <QtGui/QWidget>
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#include <QtCore/QRect>
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#include <QtGui/QPainter>
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#include <QtGui/QApplication>
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#include <QtGui/QPalette>
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#include <QtGui/QStyleOption>
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#include <QtCore/QObject>
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// Clamps float color values within (0, 255)
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static int clamp(float x)
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{
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const int val = x > 255 ? 255 : static_cast<int>(x);
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return val < 0 ? 0 : val;
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}
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namespace Utils {
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qreal StyleHelper::sidebarFontSize()
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{
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#if defined(Q_WS_MAC)
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return 10;
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#else
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return 7.5;
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#endif
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}
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QColor StyleHelper::panelTextColor(bool lightColored)
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{
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if (!lightColored)
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return Qt::white;
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else
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return Qt::black;
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}
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// Invalid by default, setBaseColor needs to be called at least once
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QColor StyleHelper::m_baseColor;
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QColor StyleHelper::m_requestedBaseColor;
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QColor StyleHelper::baseColor(bool lightColored)
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{
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if (!lightColored)
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return m_baseColor;
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else
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return m_baseColor.lighter(230);
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}
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QColor StyleHelper::highlightColor(bool lightColored)
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{
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QColor result = baseColor(lightColored);
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if (!lightColored)
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result.setHsv(result.hue(),
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clamp(result.saturation()),
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clamp(result.value() * 1.16));
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else
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result.setHsv(result.hue(),
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clamp(result.saturation()),
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clamp(result.value() * 1.06));
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return result;
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}
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QColor StyleHelper::shadowColor(bool lightColored)
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{
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QColor result = baseColor(lightColored);
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result.setHsv(result.hue(),
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clamp(result.saturation() * 1.1),
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clamp(result.value() * 0.70));
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return result;
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}
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QColor StyleHelper::borderColor(bool lightColored)
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{
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QColor result = baseColor(lightColored);
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result.setHsv(result.hue(),
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result.saturation(),
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result.value() / 2);
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return result;
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}
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// We try to ensure that the actual color used are within
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// reasonalbe bounds while generating the actual baseColor
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// from the users request.
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void StyleHelper::setBaseColor(const QColor &newcolor)
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{
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m_requestedBaseColor = newcolor;
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QColor color;
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color.setHsv(newcolor.hue(),
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newcolor.saturation() * 0.7,
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64 + newcolor.value() / 3);
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if (color.isValid() && color != m_baseColor) {
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m_baseColor = color;
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foreach (QWidget *w, QApplication::topLevelWidgets())
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w->update();
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}
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}
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static void verticalGradientHelper(QPainter *p, const QRect &spanRect, const QRect &rect, bool lightColored)
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{
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QColor highlight = StyleHelper::highlightColor(lightColored);
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QColor shadow = StyleHelper::shadowColor(lightColored);
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QLinearGradient grad(spanRect.topRight(), spanRect.topLeft());
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grad.setColorAt(0, highlight.lighter(117));
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grad.setColorAt(1, shadow.darker(109));
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p->fillRect(rect, grad);
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QColor light(255, 255, 255, 80);
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p->setPen(light);
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p->drawLine(rect.topRight() - QPoint(1, 0), rect.bottomRight() - QPoint(1, 0));
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QColor dark(0, 0, 0, 90);
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p->setPen(dark);
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p->drawLine(rect.topLeft(), rect.bottomLeft());
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}
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void StyleHelper::verticalGradient(QPainter *painter, const QRect &spanRect, const QRect &clipRect, bool lightColored)
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{
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if (StyleHelper::usePixmapCache()) {
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QString key;
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QColor keyColor = baseColor(lightColored);
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key.sprintf("mh_vertical %d %d %d %d %d",
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spanRect.width(), spanRect.height(), clipRect.width(),
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clipRect.height(), keyColor.rgb());;
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QPixmap pixmap;
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if (!QPixmapCache::find(key, pixmap)) {
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pixmap = QPixmap(clipRect.size());
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QPainter p(&pixmap);
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QRect rect(0, 0, clipRect.width(), clipRect.height());
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verticalGradientHelper(&p, spanRect, rect, lightColored);
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p.end();
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QPixmapCache::insert(key, pixmap);
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}
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painter->drawPixmap(clipRect.topLeft(), pixmap);
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} else {
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verticalGradientHelper(painter, spanRect, clipRect, lightColored);
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}
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}
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// Draws a cached pixmap with shadow
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void StyleHelper::drawIconWithShadow(const QIcon &icon, const QRect &rect,
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QPainter *p, QIcon::Mode iconMode, int radius, const QColor &color, const QPoint &offset)
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{
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QPixmap cache;
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QString pixmapName = QString("icon %0 %1 %2").arg(icon.cacheKey()).arg(iconMode).arg(rect.height());
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if (!QPixmapCache::find(pixmapName, cache)) {
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QPixmap px = icon.pixmap(rect.size());
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cache = QPixmap(px.size() + QSize(radius * 2, radius * 2));
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cache.fill(Qt::transparent);
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QPainter cachePainter(&cache);
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if (iconMode == QIcon::Disabled) {
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QImage im = px.toImage().convertToFormat(QImage::Format_ARGB32);
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for (int y=0; y<im.height(); ++y) {
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QRgb *scanLine = (QRgb*)im.scanLine(y);
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for (int x=0; x<im.width(); ++x) {
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QRgb pixel = *scanLine;
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char intensity = qGray(pixel);
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*scanLine = qRgba(intensity, intensity, intensity, qAlpha(pixel));
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++scanLine;
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}
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}
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px = QPixmap::fromImage(im);
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}
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// Draw shadow
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QImage tmp(px.size() + QSize(radius * 2, radius * 2 + 1), QImage::Format_ARGB32_Premultiplied);
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tmp.fill(Qt::transparent);
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QPainter tmpPainter(&tmp);
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tmpPainter.setCompositionMode(QPainter::CompositionMode_Source);
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tmpPainter.drawPixmap(QPoint(radius, radius), px);
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tmpPainter.end();
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// blur the alpha channel
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QImage blurred(tmp.size(), QImage::Format_ARGB32_Premultiplied);
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blurred.fill(Qt::transparent);
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QPainter blurPainter(&blurred);
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qt_blurImage(&blurPainter, tmp, radius, false, true);
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blurPainter.end();
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tmp = blurred;
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// blacken the image...
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tmpPainter.begin(&tmp);
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tmpPainter.setCompositionMode(QPainter::CompositionMode_SourceIn);
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tmpPainter.fillRect(tmp.rect(), color);
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tmpPainter.end();
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tmpPainter.begin(&tmp);
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tmpPainter.setCompositionMode(QPainter::CompositionMode_SourceIn);
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tmpPainter.fillRect(tmp.rect(), color);
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tmpPainter.end();
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// draw the blurred drop shadow...
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cachePainter.drawImage(QRect(0, 0, cache.rect().width(), cache.rect().height()), tmp);
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// Draw the actual pixmap...
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cachePainter.drawPixmap(QPoint(radius, radius) + offset, px);
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QPixmapCache::insert(pixmapName, cache);
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}
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QRect targetRect = cache.rect();
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targetRect.moveCenter(rect.center());
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p->drawPixmap(targetRect.topLeft() - offset, cache);
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}
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} // namespace Utils
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