2b50c8bec0
Outside tests, all in-tree callers of QObject::findChildren() pass no
name to match, and in my experience that is also true for the vast
majority of out-of-tree users.
Avoid the temporary QString creation in the caller and the repeated
QString::isNull() checks in the implementation by overloading
findChildren() without a name argument and checking for name.isNull()
only once, forking off into separate helper functions.
Adjust in-tree callers that used an explicit `QString()` argument in
order to pass options, which goes to show that `name` should never
have been the first argument of findChilden() in the first place, even
though I appreciate the symmetry with findChild() (the use-cases of
which, however, are radically different).
Change a `findChildren().size() == 0` call found while scanning for
findChildren() calls to `!findChild()` as a drive-by.
Modernize loops in the various qt_qFindChild{,ren}_helper() overloads
to match how the new code looks.
[ChangeLog][QtCore][QObject] Added findChildren() overload taking no
name (thus optimizing this common case).
Change-Id: Ifc56e5438023d079b40c67f11ae274a3e128ad5e
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
500 lines
20 KiB
C++
500 lines
20 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the demonstration applications of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the 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 The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** BSD License Usage
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** Alternatively, you may use this file under the terms of the BSD license
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** as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of The Qt Company Ltd nor the names of its
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** contributors may be used to endorse or promote products derived
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** from this software without specific prior written permission.
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**
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "arthurstyle.h"
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#include "arthurwidgets.h"
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#include <QLayout>
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#include <QPainter>
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#include <QPainterPath>
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#include <QPixmapCache>
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#include <QRadioButton>
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#include <QString>
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#include <QStyleOption>
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#include <QtDebug>
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QPixmap cached(const QString &img)
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{
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QPixmap pm;
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if (QPixmapCache::find(img, &pm))
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return pm;
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pm = QPixmap::fromImage(QImage(img), Qt::OrderedDither | Qt::OrderedAlphaDither);
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if (pm.isNull())
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return QPixmap();
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QPixmapCache::insert(img, pm);
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return pm;
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}
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ArthurStyle::ArthurStyle()
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: QCommonStyle()
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{
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Q_INIT_RESOURCE(shared);
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}
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void ArthurStyle::drawHoverRect(QPainter *painter, const QRect &r) const
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{
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qreal h = r.height();
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qreal h2 = r.height() / qreal(2);
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QPainterPath path;
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path.addRect(r.x() + h2, r.y() + 0, r.width() - h2 * 2, r.height());
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path.addEllipse(r.x(), r.y(), h, h);
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path.addEllipse(r.x() + r.width() - h, r.y(), h, h);
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path.setFillRule(Qt::WindingFill);
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painter->setPen(Qt::NoPen);
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painter->setBrush(QColor(191, 215, 191));
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painter->setRenderHint(QPainter::Antialiasing);
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painter->drawPath(path);
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}
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void ArthurStyle::drawPrimitive(PrimitiveElement element, const QStyleOption *option,
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QPainter *painter, const QWidget *widget) const
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{
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Q_ASSERT(option);
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switch (element) {
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case PE_FrameFocusRect:
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break;
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case PE_IndicatorRadioButton:
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if (const QStyleOptionButton *button = qstyleoption_cast<const QStyleOptionButton *>(option)) {
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bool hover = (button->state & State_Enabled) && (button->state & State_MouseOver);
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painter->save();
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QPixmap radio;
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if (hover)
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drawHoverRect(painter, widget->rect());
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if (button->state & State_Sunken)
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radio = cached(":res/images/radiobutton-on.png");
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else if (button->state & State_On)
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radio = cached(":res/images/radiobutton_on.png");
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else
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radio = cached(":res/images/radiobutton_off.png");
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painter->drawPixmap(button->rect.topLeft(), radio);
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painter->restore();
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}
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break;
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case PE_PanelButtonCommand:
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if (const QStyleOptionButton *button = qstyleoption_cast<const QStyleOptionButton *>(option)) {
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bool hover = (button->state & State_Enabled) && (button->state & State_MouseOver);
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painter->save();
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const QPushButton *pushButton = qobject_cast<const QPushButton *>(widget);
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Q_ASSERT(pushButton);
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QWidget *parent = pushButton->parentWidget();
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if (parent && qobject_cast<QGroupBox *>(parent)) {
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QLinearGradient lg(0, 0, 0, parent->height());
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lg.setColorAt(0, QColor(224,224,224));
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lg.setColorAt(1, QColor(255,255,255));
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painter->setPen(Qt::NoPen);
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painter->setBrush(lg);
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painter->setBrushOrigin(-widget->mapToParent(QPoint(0,0)));
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painter->drawRect(button->rect);
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painter->setBrushOrigin(0,0);
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}
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bool down = (button->state & State_Sunken) || (button->state & State_On);
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QPixmap left, right, mid;
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if (down) {
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left = cached(":res/images/button_pressed_cap_left.png");
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right = cached(":res/images/button_pressed_cap_right.png");
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mid = cached(":res/images/button_pressed_stretch.png");
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} else {
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left = cached(":res/images/button_normal_cap_left.png");
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right = cached(":res/images/button_normal_cap_right.png");
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mid = cached(":res/images/button_normal_stretch.png");
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}
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painter->drawPixmap(button->rect.topLeft(), left);
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painter->drawTiledPixmap(QRect(button->rect.x() + left.width(),
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button->rect.y(),
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button->rect.width() - left.width() - right.width(),
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left.height()),
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mid);
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painter->drawPixmap(button->rect.x() + button->rect.width() - right.width(),
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button->rect.y(),
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right);
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if (hover)
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painter->fillRect(widget->rect().adjusted(3,5,-3,-5), QColor(31,127,31,63));
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painter->restore();
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}
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break;
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case PE_FrameGroupBox:
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if (const QStyleOptionFrame *group
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= qstyleoption_cast<const QStyleOptionFrame *>(option)) {
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const QRect &r = group->rect;
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painter->save();
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int radius = 14;
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int radius2 = radius*2;
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QPainterPath clipPath;
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clipPath.moveTo(radius, 0);
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clipPath.arcTo(r.right() - radius2, 0, radius2, radius2, 90, -90);
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clipPath.arcTo(r.right() - radius2, r.bottom() - radius2, radius2, radius2, 0, -90);
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clipPath.arcTo(r.left(), r.bottom() - radius2, radius2, radius2, 270, -90);
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clipPath.arcTo(r.left(), r.top(), radius2, radius2, 180, -90);
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painter->setClipPath(clipPath);
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QPixmap titleStretch = cached(":res/images/title_stretch.png");
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QPixmap topLeft = cached(":res/images/groupframe_topleft.png");
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QPixmap topRight = cached(":res/images/groupframe_topright.png");
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QPixmap bottomLeft = cached(":res/images/groupframe_bottom_left.png");
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QPixmap bottomRight = cached(":res/images/groupframe_bottom_right.png");
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QPixmap leftStretch = cached(":res/images/groupframe_left_stretch.png");
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QPixmap topStretch = cached(":res/images/groupframe_top_stretch.png");
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QPixmap rightStretch = cached(":res/images/groupframe_right_stretch.png");
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QPixmap bottomStretch = cached(":res/images/groupframe_bottom_stretch.png");
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QLinearGradient lg(0, 0, 0, r.height());
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lg.setColorAt(0, QColor(224,224,224));
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lg.setColorAt(1, QColor(255,255,255));
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painter->setPen(Qt::NoPen);
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painter->setBrush(lg);
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painter->drawRect(r.adjusted(0, titleStretch.height()/2, 0, 0));
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painter->setClipping(false);
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int topFrameOffset = titleStretch.height()/2 - 2;
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painter->drawPixmap(r.topLeft() + QPoint(0, topFrameOffset), topLeft);
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painter->drawPixmap(r.topRight() - QPoint(topRight.width()-1, 0)
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+ QPoint(0, topFrameOffset), topRight);
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painter->drawPixmap(r.bottomLeft() - QPoint(0, bottomLeft.height()-1), bottomLeft);
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painter->drawPixmap(r.bottomRight() - QPoint(bottomRight.width()-1,
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bottomRight.height()-1), bottomRight);
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QRect left = r;
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left.setY(r.y() + topLeft.height() + topFrameOffset);
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left.setWidth(leftStretch.width());
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left.setHeight(r.height() - topLeft.height() - bottomLeft.height() - topFrameOffset);
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painter->drawTiledPixmap(left, leftStretch);
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QRect top = r;
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top.setX(r.x() + topLeft.width());
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top.setY(r.y() + topFrameOffset);
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top.setWidth(r.width() - topLeft.width() - topRight.width());
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top.setHeight(topLeft.height());
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painter->drawTiledPixmap(top, topStretch);
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QRect right = r;
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right.setX(r.right() - rightStretch.width()+1);
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right.setY(r.y() + topRight.height() + topFrameOffset);
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right.setWidth(rightStretch.width());
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right.setHeight(r.height() - topRight.height()
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- bottomRight.height() - topFrameOffset);
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painter->drawTiledPixmap(right, rightStretch);
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QRect bottom = r;
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bottom.setX(r.x() + bottomLeft.width());
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bottom.setY(r.bottom() - bottomStretch.height()+1);
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bottom.setWidth(r.width() - bottomLeft.width() - bottomRight.width());
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bottom.setHeight(bottomLeft.height());
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painter->drawTiledPixmap(bottom, bottomStretch);
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painter->restore();
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}
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break;
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default:
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QCommonStyle::drawPrimitive(element, option, painter, widget);
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break;
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}
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return;
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}
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void ArthurStyle::drawComplexControl(ComplexControl control, const QStyleOptionComplex *option,
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QPainter *painter, const QWidget *widget) const
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{
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switch (control) {
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case CC_Slider:
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if (const QStyleOptionSlider *slider = qstyleoption_cast<const QStyleOptionSlider *>(option)) {
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QRect groove = subControlRect(CC_Slider, option, SC_SliderGroove, widget);
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QRect handle = subControlRect(CC_Slider, option, SC_SliderHandle, widget);
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painter->save();
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bool hover = (slider->state & State_Enabled) && (slider->state & State_MouseOver);
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if (hover) {
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QRect moderated = widget->rect().adjusted(0, 4, 0, -4);
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drawHoverRect(painter, moderated);
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}
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if ((option->subControls & SC_SliderGroove) && groove.isValid()) {
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QPixmap grv = cached(":res/images/slider_bar.png");
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painter->drawPixmap(QRect(groove.x() + 5, groove.y(),
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groove.width() - 10, grv.height()),
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grv);
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}
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if ((option->subControls & SC_SliderHandle) && handle.isValid()) {
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QPixmap hndl = cached(":res/images/slider_thumb_on.png");
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painter->drawPixmap(handle.topLeft(), hndl);
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}
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painter->restore();
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}
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break;
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case CC_GroupBox:
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if (const QStyleOptionGroupBox *groupBox
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= qstyleoption_cast<const QStyleOptionGroupBox *>(option)) {
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QStyleOptionGroupBox groupBoxCopy(*groupBox);
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groupBoxCopy.subControls &= ~SC_GroupBoxLabel;
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QCommonStyle::drawComplexControl(control, &groupBoxCopy, painter, widget);
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if (groupBox->subControls & SC_GroupBoxLabel) {
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const QRect &r = groupBox->rect;
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QPixmap titleLeft = cached(":res/images/title_cap_left.png");
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QPixmap titleRight = cached(":res/images/title_cap_right.png");
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QPixmap titleStretch = cached(":res/images/title_stretch.png");
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int txt_width = groupBox->fontMetrics.horizontalAdvance(groupBox->text) + 20;
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painter->drawPixmap(r.center().x() - txt_width/2, 0, titleLeft);
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QRect tileRect = subControlRect(control, groupBox, SC_GroupBoxLabel, widget);
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painter->drawTiledPixmap(tileRect, titleStretch);
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painter->drawPixmap(tileRect.x() + tileRect.width(), 0, titleRight);
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int opacity = 31;
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painter->setPen(QColor(0, 0, 0, opacity));
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painter->drawText(tileRect.translated(0, 1),
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Qt::AlignVCenter | Qt::AlignHCenter, groupBox->text);
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painter->drawText(tileRect.translated(2, 1),
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Qt::AlignVCenter | Qt::AlignHCenter, groupBox->text);
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painter->setPen(QColor(0, 0, 0, opacity * 2));
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painter->drawText(tileRect.translated(1, 1),
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Qt::AlignVCenter | Qt::AlignHCenter, groupBox->text);
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painter->setPen(Qt::white);
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painter->drawText(tileRect, Qt::AlignVCenter | Qt::AlignHCenter, groupBox->text);
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}
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}
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break;
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default:
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QCommonStyle::drawComplexControl(control, option, painter, widget);
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break;
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}
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return;
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}
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void ArthurStyle::drawControl(QStyle::ControlElement element, const QStyleOption *option,
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QPainter *painter, const QWidget *widget) const
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{
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switch (element) {
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case CE_RadioButtonLabel:
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if (const QStyleOptionButton *button
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= qstyleoption_cast<const QStyleOptionButton *>(option)) {
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if (button->text.isEmpty()) {
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QCommonStyle::drawControl(element, option, painter, widget);
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} else {
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painter->save();
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painter->setPen(Qt::black);
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painter->drawText(button->rect, Qt::AlignVCenter, button->text);
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painter->restore();
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}
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}
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break;
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case CE_PushButtonLabel:
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if (const QStyleOptionButton *button
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= qstyleoption_cast<const QStyleOptionButton *>(option)) {
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if (button->text.isEmpty()) {
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QCommonStyle::drawControl(element, option, painter, widget);
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} else {
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painter->save();
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painter->setPen(Qt::black);
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painter->drawText(button->rect, Qt::AlignVCenter | Qt::AlignHCenter, button->text);
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painter->restore();
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}
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}
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break;
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default:
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QCommonStyle::drawControl(element, option, painter, widget);
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break;
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}
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}
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QRect ArthurStyle::subControlRect(ComplexControl control, const QStyleOptionComplex *option,
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SubControl subControl, const QWidget *widget) const
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{
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QRect rect;
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switch (control) {
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default:
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rect = QCommonStyle::subControlRect(control, option, subControl, widget);
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break;
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case CC_GroupBox:
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if (const QStyleOptionGroupBox *group
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= qstyleoption_cast<const QStyleOptionGroupBox *>(option)) {
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switch (subControl) {
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default:
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rect = QCommonStyle::subControlRect(control, option, subControl, widget);
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break;
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case SC_GroupBoxContents:
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rect = QCommonStyle::subControlRect(control, option, subControl, widget);
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rect.adjust(0, -8, 0, 0);
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break;
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case SC_GroupBoxFrame:
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rect = group->rect;
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break;
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case SC_GroupBoxLabel:
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QPixmap titleLeft = cached(":res/images/title_cap_left.png");
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QPixmap titleRight = cached(":res/images/title_cap_right.png");
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QPixmap titleStretch = cached(":res/images/title_stretch.png");
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int txt_width = group->fontMetrics.horizontalAdvance(group->text) + 20;
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rect = QRect(group->rect.center().x() - txt_width/2 + titleLeft.width(), 0,
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txt_width - titleLeft.width() - titleRight.width(),
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titleStretch.height());
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break;
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}
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}
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break;
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}
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if (control == CC_Slider && subControl == SC_SliderHandle) {
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rect.setWidth(13);
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rect.setHeight(27);
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} else if (control == CC_Slider && subControl == SC_SliderGroove) {
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rect.setHeight(9);
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rect.moveTop(27/2 - 9/2);
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}
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return rect;
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}
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QSize ArthurStyle::sizeFromContents(ContentsType type, const QStyleOption *option,
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const QSize &size, const QWidget *widget) const
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{
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QSize newSize = QCommonStyle::sizeFromContents(type, option, size, widget);
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|
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switch (type) {
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case CT_RadioButton:
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newSize += QSize(20, 0);
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break;
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case CT_PushButton:
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newSize.setHeight(26);
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break;
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case CT_Slider:
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newSize.setHeight(27);
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break;
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default:
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break;
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}
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return newSize;
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}
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int ArthurStyle::pixelMetric(PixelMetric pm, const QStyleOption *opt, const QWidget *widget) const
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{
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if (pm == PM_SliderLength)
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return 13;
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return QCommonStyle::pixelMetric(pm, opt, widget);
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}
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void ArthurStyle::polish(QWidget *widget)
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{
|
|
if (widget->layout() && qobject_cast<QGroupBox *>(widget)) {
|
|
if (!widget->findChild<QGroupBox *>()) {
|
|
widget->layout()->setSpacing(0);
|
|
widget->layout()->setContentsMargins(12, 12, 12, 12);
|
|
} else {
|
|
widget->layout()->setContentsMargins(13, 13, 13, 13);
|
|
}
|
|
}
|
|
|
|
if (qobject_cast<QPushButton *>(widget)
|
|
|| qobject_cast<QRadioButton *>(widget)
|
|
|| qobject_cast<QSlider *>(widget)) {
|
|
widget->setAttribute(Qt::WA_Hover);
|
|
}
|
|
|
|
QPalette pal = widget->palette();
|
|
if (widget->isWindow()) {
|
|
pal.setColor(QPalette::Window, QColor(241, 241, 241));
|
|
widget->setPalette(pal);
|
|
}
|
|
|
|
}
|
|
|
|
void ArthurStyle::unpolish(QWidget *widget)
|
|
{
|
|
if (qobject_cast<QPushButton *>(widget)
|
|
|| qobject_cast<QRadioButton *>(widget)
|
|
|| qobject_cast<QSlider *>(widget)) {
|
|
widget->setAttribute(Qt::WA_Hover, false);
|
|
}
|
|
}
|
|
|
|
void ArthurStyle::polish(QPalette &palette)
|
|
{
|
|
palette.setColor(QPalette::Window, QColor(241, 241, 241));
|
|
}
|
|
|
|
QRect ArthurStyle::subElementRect(SubElement element, const QStyleOption *option, const QWidget *widget) const
|
|
{
|
|
QRect r;
|
|
switch(element) {
|
|
case SE_RadioButtonClickRect:
|
|
r = widget->rect();
|
|
break;
|
|
case SE_RadioButtonContents:
|
|
r = widget->rect().adjusted(20, 0, 0, 0);
|
|
break;
|
|
default:
|
|
r = QCommonStyle::subElementRect(element, option, widget);
|
|
break;
|
|
}
|
|
|
|
if (qobject_cast<const QRadioButton*>(widget))
|
|
r = r.adjusted(5, 0, -5, 0);
|
|
|
|
return r;
|
|
}
|