486 lines
18 KiB
C++
486 lines
18 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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// Clamps float color values within (0, 255)
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/*
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static int range(float x, int min, int max)
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{
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int val = x > max ? max : x;
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return val < min ? min : val;
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}
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*/
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namespace Utils {
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QColor StyleHelper::mergedColors(const QColor &colorA, const QColor &colorB, int factor)
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{
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const int maxFactor = 100;
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QColor tmp = colorA;
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tmp.setRed((tmp.red() * factor) / maxFactor + (colorB.red() * (maxFactor - factor)) / maxFactor);
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tmp.setGreen((tmp.green() * factor) / maxFactor + (colorB.green() * (maxFactor - factor)) / maxFactor);
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tmp.setBlue((tmp.blue() * factor) / maxFactor + (colorB.blue() * (maxFactor - factor)) / maxFactor);
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return tmp;
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}
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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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QPalette StyleHelper::sidebarFontPalette(const QPalette &original)
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{
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QPalette palette = original;
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palette.setColor(QPalette::Active, QPalette::Text, panelTextColor());
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palette.setColor(QPalette::Active, QPalette::WindowText, panelTextColor());
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palette.setColor(QPalette::Inactive, QPalette::Text, panelTextColor().darker());
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palette.setColor(QPalette::Inactive, QPalette::WindowText, panelTextColor().darker());
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return palette;
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}
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QColor StyleHelper::panelTextColor(bool lightColored)
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{
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//qApp->palette().highlightedText().color();
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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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static void horizontalGradientHelper(QPainter *p, const QRect &spanRect, const
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QRect &rect, bool lightColored)
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{
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if (lightColored) {
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QLinearGradient shadowGradient(rect.topLeft(), rect.bottomLeft());
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shadowGradient.setColorAt(0, 0xf0f0f0);
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shadowGradient.setColorAt(1, 0xcfcfcf);
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p->fillRect(rect, shadowGradient);
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return;
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}
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QColor base = StyleHelper::baseColor(lightColored);
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QColor highlight = StyleHelper::highlightColor(lightColored);
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QColor shadow = StyleHelper::shadowColor(lightColored);
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QLinearGradient grad(rect.topLeft(), rect.bottomLeft());
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grad.setColorAt(0, highlight.lighter(120));
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if (rect.height() == StyleHelper::navigationWidgetHeight()) {
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grad.setColorAt(0.4, highlight);
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grad.setColorAt(0.401, base);
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}
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grad.setColorAt(1, shadow);
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p->fillRect(rect, grad);
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QLinearGradient shadowGradient(spanRect.topLeft(), spanRect.topRight());
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shadowGradient.setColorAt(0, QColor(0, 0, 0, 30));
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QColor lighterHighlight;
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if (!lightColored)
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lighterHighlight = highlight.lighter(130);
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else
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lighterHighlight = highlight.lighter(90);
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lighterHighlight.setAlpha(100);
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shadowGradient.setColorAt(0.7, lighterHighlight);
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shadowGradient.setColorAt(1, QColor(0, 0, 0, 40));
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p->fillRect(rect, shadowGradient);
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}
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void StyleHelper::horizontalGradient(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_horizontal %d %d %d %d %d %d",
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spanRect.width(), spanRect.height(), clipRect.width(),
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clipRect.height(), keyColor.rgb(), spanRect.x());
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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 = QRect(0, 0, clipRect.width(), clipRect.height());
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horizontalGradientHelper(&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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horizontalGradientHelper(painter, spanRect, clipRect, lightColored);
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}
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}
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static void menuGradientHelper(QPainter *p, const QRect &spanRect, const QRect &rect)
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{
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QLinearGradient grad(spanRect.topLeft(), spanRect.bottomLeft());
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QColor menuColor = StyleHelper::mergedColors(StyleHelper::baseColor(), QColor(244, 244, 244), 25);
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grad.setColorAt(0, menuColor.lighter(112));
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grad.setColorAt(1, menuColor);
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p->fillRect(rect, grad);
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}
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void StyleHelper::drawArrow(QStyle::PrimitiveElement element, QPainter *painter, const QStyleOption *option)
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{
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// From windowsstyle but modified to enable AA
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if (option->rect.width() <= 1 || option->rect.height() <= 1)
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return;
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QRect r = option->rect;
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int size = qMin(r.height(), r.width());
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QPixmap pixmap;
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QString pixmapName;
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pixmapName.sprintf("arrow-%s-%d-%d-%d-%lld",
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"$qt_ia",
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uint(option->state), element,
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size, option->palette.cacheKey());
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if (!QPixmapCache::find(pixmapName, pixmap)) {
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int border = size/5;
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int sqsize = 2*(size/2);
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QImage image(sqsize, sqsize, QImage::Format_ARGB32);
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image.fill(Qt::transparent);
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QPainter imagePainter(&image);
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imagePainter.setRenderHint(QPainter::Antialiasing, true);
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imagePainter.translate(0.5, 0.5);
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QPolygon a;
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switch (element) {
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case QStyle::PE_IndicatorArrowUp:
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a.setPoints(3, border, sqsize/2, sqsize/2, border, sqsize - border, sqsize/2);
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break;
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case QStyle::PE_IndicatorArrowDown:
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a.setPoints(3, border, sqsize/2, sqsize/2, sqsize - border, sqsize - border, sqsize/2);
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break;
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case QStyle::PE_IndicatorArrowRight:
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a.setPoints(3, sqsize - border, sqsize/2, sqsize/2, border, sqsize/2, sqsize - border);
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break;
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case QStyle::PE_IndicatorArrowLeft:
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a.setPoints(3, border, sqsize/2, sqsize/2, border, sqsize/2, sqsize - border);
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break;
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default:
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break;
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}
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int bsx = 0;
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int bsy = 0;
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if (option->state & QStyle::State_Sunken) {
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bsx = qApp->style()->pixelMetric(QStyle::PM_ButtonShiftHorizontal);
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bsy = qApp->style()->pixelMetric(QStyle::PM_ButtonShiftVertical);
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}
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QRect bounds = a.boundingRect();
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int sx = sqsize / 2 - bounds.center().x() - 1;
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int sy = sqsize / 2 - bounds.center().y() - 1;
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imagePainter.translate(sx + bsx, sy + bsy);
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if (!(option->state & QStyle::State_Enabled)) {
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QColor foreGround(150, 150, 150, 150);
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imagePainter.setBrush(option->palette.mid().color());
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imagePainter.setPen(option->palette.mid().color());
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} else {
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QColor shadow(0, 0, 0, 100);
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imagePainter.translate(0, 1);
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imagePainter.setPen(shadow);
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imagePainter.setBrush(shadow);
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QColor foreGround(255, 255, 255, 210);
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imagePainter.drawPolygon(a);
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imagePainter.translate(0, -1);
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imagePainter.setPen(foreGround);
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imagePainter.setBrush(foreGround);
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}
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imagePainter.drawPolygon(a);
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imagePainter.end();
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pixmap = QPixmap::fromImage(image);
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QPixmapCache::insert(pixmapName, pixmap);
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}
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int xOffset = r.x() + (r.width() - size)/2;
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int yOffset = r.y() + (r.height() - size)/2;
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painter->drawPixmap(xOffset, yOffset, pixmap);
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}
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void StyleHelper::menuGradient(QPainter *painter, const QRect &spanRect, const QRect &clipRect)
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{
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if (StyleHelper::usePixmapCache()) {
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QString key;
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key.sprintf("mh_menu %d %d %d %d %d",
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spanRect.width(), spanRect.height(), clipRect.width(),
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clipRect.height(), StyleHelper::baseColor().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 = QRect(0, 0, clipRect.width(), clipRect.height());
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menuGradientHelper(&p, spanRect, rect);
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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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menuGradientHelper(painter, spanRect, clipRect);
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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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// Draws a CSS-like border image where the defined borders are not stretched
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void StyleHelper::drawCornerImage(const QImage &img, QPainter *painter, QRect rect,
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int left, int top, int right, int bottom)
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{
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QSize size = img.size();
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if (top > 0) { //top
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painter->drawImage(QRect(rect.left() + left, rect.top(), rect.width() -right - left, top), img,
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QRect(left, 0, size.width() -right - left, top));
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if (left > 0) //top-left
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painter->drawImage(QRect(rect.left(), rect.top(), left, top), img,
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QRect(0, 0, left, top));
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if (right > 0) //top-right
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painter->drawImage(QRect(rect.left() + rect.width() - right, rect.top(), right, top), img,
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QRect(size.width() - right, 0, right, top));
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}
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//left
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if (left > 0)
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painter->drawImage(QRect(rect.left(), rect.top()+top, left, rect.height() - top - bottom), img,
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QRect(0, top, left, size.height() - bottom - top));
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//center
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painter->drawImage(QRect(rect.left() + left, rect.top()+top, rect.width() -right - left,
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rect.height() - bottom - top), img,
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QRect(left, top, size.width() -right -left,
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size.height() - bottom - top));
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if (right > 0) //right
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painter->drawImage(QRect(rect.left() +rect.width() - right, rect.top()+top, right, rect.height() - top - bottom), img,
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QRect(size.width() - right, top, right, size.height() - bottom - top));
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if (bottom > 0) { //bottom
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painter->drawImage(QRect(rect.left() +left, rect.top() + rect.height() - bottom,
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rect.width() - right - left, bottom), img,
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QRect(left, size.height() - bottom,
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size.width() - right - left, bottom));
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if (left > 0) //bottom-left
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painter->drawImage(QRect(rect.left(), rect.top() + rect.height() - bottom, left, bottom), img,
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QRect(0, size.height() - bottom, left, bottom));
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if (right > 0) //bottom-right
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painter->drawImage(QRect(rect.left() + rect.width() - right, rect.top() + rect.height() - bottom, right, bottom), img,
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QRect(size.width() - right, size.height() - bottom, right, bottom));
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}
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}
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} // namespace Utils
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