555 lines
16 KiB
C++
555 lines
16 KiB
C++
/*
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* Copyright 2008 Aaron Seigo <aseigo@kde.org>
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* Copyright 2008 Marco Martin <notmart@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Library General Public License as
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* published by the Free Software Foundation; either version 2, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "pushbutton.h"
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#include <QStyleOptionGraphicsItem>
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#include <QPainter>
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#include <QDir>
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#include <QApplication>
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#include <QWeakPointer>
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#include <QPropertyAnimation>
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#include <kicon.h>
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#include <kiconeffect.h>
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#include <kmimetype.h>
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#include <kpushbutton.h>
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#include "theme.h"
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#include "svg.h"
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#include "framesvg.h"
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#include "animator.h"
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#include "paintutils.h"
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#include "private/actionwidgetinterface_p.h"
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#include <plasma/private/focusindicator_p.h>
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#include "animations/animation.h"
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namespace Plasma
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{
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class PushButtonPrivate : public ActionWidgetInterface<PushButton>
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{
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public:
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PushButtonPrivate(PushButton *pushButton)
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: ActionWidgetInterface<PushButton>(pushButton),
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q(pushButton),
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background(0),
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fadeIn(false),
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svg(0),
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customFont(false)
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{
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}
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~PushButtonPrivate()
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{
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delete svg;
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}
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void setPixmap()
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{
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if (imagePath.isEmpty()) {
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delete svg;
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svg = 0;
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return;
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}
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KMimeType::Ptr mime = KMimeType::findByPath(absImagePath);
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QPixmap pm;
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if (mime->is("image/svg+xml") || mime->is("image/svg+xml-compressed")) {
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if (!svg || svg->imagePath() != absImagePath) {
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delete svg;
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svg = new Svg();
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svg->setImagePath(imagePath);
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QObject::connect(svg, SIGNAL(repaintNeeded()), q, SLOT(setPixmap()));
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if (!svgElement.isNull()) {
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svg->setContainsMultipleImages(true);
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}
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}
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//QPainter p(&pm);
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if (!svgElement.isEmpty() && svg->hasElement(svgElement)) {
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svg->resize();
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QSizeF elementSize = svg->elementSize(svgElement);
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float scale = q->nativeWidget()->iconSize().width() / qMax(elementSize.width(), elementSize.height());
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svg->resize(elementSize * scale);
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pm = svg->pixmap(svgElement);
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} else {
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svg->resize(q->nativeWidget()->iconSize());
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pm = svg->pixmap();
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}
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} else {
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delete svg;
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svg = 0;
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pm = QPixmap(absImagePath);
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}
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static_cast<KPushButton*>(q->widget())->setIcon(KIcon(pm));
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}
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void pressedChanged()
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{
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if (q->nativeWidget()->isDown() || q->nativeWidget()->isChecked()) {
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focusIndicator->animateVisibility(false);
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} else {
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focusIndicator->animateVisibility(true);
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}
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}
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void syncActiveRect();
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void syncBorders();
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PushButton *q;
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FrameSvg *background;
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bool fadeIn;
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qreal opacity;
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QRectF activeRect;
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Animation *hoverAnimation;
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FocusIndicator *focusIndicator;
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QString imagePath;
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QString absImagePath;
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Svg *svg;
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QString svgElement;
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bool customFont;
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};
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void PushButtonPrivate::syncActiveRect()
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{
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background->setElementPrefix("normal");
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qreal left, top, right, bottom;
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background->getMargins(left, top, right, bottom);
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background->setElementPrefix("active");
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qreal activeLeft, activeTop, activeRight, activeBottom;
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background->getMargins(activeLeft, activeTop, activeRight, activeBottom);
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activeRect = QRectF(QPointF(0, 0), q->size());
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activeRect.adjust(left - activeLeft, top - activeTop,
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-(right - activeRight), -(bottom - activeBottom));
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background->setElementPrefix("normal");
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}
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void PushButtonPrivate::syncBorders()
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{
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//set margins from the normal element
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qreal left, top, right, bottom;
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background->setElementPrefix("normal");
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background->getMargins(left, top, right, bottom);
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q->setContentsMargins(left, top, right, bottom);
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//calc the rect for the over effect
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syncActiveRect();
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}
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PushButton::PushButton(QGraphicsWidget *parent)
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: QGraphicsProxyWidget(parent),
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d(new PushButtonPrivate(this))
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{
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d->background = new FrameSvg(this);
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d->background->setImagePath("widgets/button");
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d->background->setCacheAllRenderedFrames(true);
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d->background->setElementPrefix("normal");
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d->hoverAnimation = Animator::create(Animator::PixmapTransitionAnimation);
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d->hoverAnimation->setTargetWidget(this);
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d->hoverAnimation->setProperty("startPixmap", d->background->framePixmap());
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KPushButton *native = new KPushButton;
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connect(native, SIGNAL(pressed()), this, SIGNAL(pressed()));
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connect(native, SIGNAL(pressed()), this, SLOT(pressedChanged()));
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connect(native, SIGNAL(released()), this, SIGNAL(released()));
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connect(native, SIGNAL(released()), this, SLOT(pressedChanged()));
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connect(native, SIGNAL(clicked()), this, SIGNAL(clicked()));
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connect(native, SIGNAL(toggled(bool)), this, SIGNAL(toggled(bool)));
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setWidget(native);
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native->setAttribute(Qt::WA_NoSystemBackground);
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native->setWindowIcon(QIcon());
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setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Minimum);
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d->focusIndicator = new FocusIndicator(this, "widgets/button");
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d->syncBorders();
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setAcceptHoverEvents(true);
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connect(d->background, SIGNAL(repaintNeeded()), SLOT(syncBorders()));
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}
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PushButton::~PushButton()
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{
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delete d;
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}
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void PushButton::setText(const QString &text)
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{
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static_cast<KPushButton*>(widget())->setText(text);
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updateGeometry();
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}
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QString PushButton::text() const
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{
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return static_cast<KPushButton*>(widget())->text();
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}
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void PushButton::setImage(const QString &path)
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{
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if (d->imagePath == path) {
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return;
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}
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delete d->svg;
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d->svg = 0;
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d->imagePath = path;
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bool absolutePath = !path.isEmpty() &&
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#ifdef Q_WS_WIN
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!QDir::isRelativePath(path)
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#else
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(path[0] == '/' || path.startsWith(QLatin1String(":/")))
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#endif
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;
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if (absolutePath) {
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d->absImagePath = path;
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} else {
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//TODO: package support
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d->absImagePath = Theme::defaultTheme()->imagePath(path);
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}
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d->setPixmap();
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}
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void PushButton::setImage(const QString &path, const QString &elementid)
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{
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d->svgElement = elementid;
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setImage(path);
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}
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QString PushButton::image() const
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{
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return d->imagePath;
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}
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void PushButton::setStyleSheet(const QString &stylesheet)
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{
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widget()->setStyleSheet(stylesheet);
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}
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QString PushButton::styleSheet()
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{
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return widget()->styleSheet();
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}
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void PushButton::setAction(QAction *action)
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{
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d->setAction(action);
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}
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QAction *PushButton::action() const
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{
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return d->action;
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}
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void PushButton::setIcon(const KIcon &icon)
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{
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nativeWidget()->setIcon(icon);
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}
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void PushButton::setIcon(const QIcon &icon)
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{
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setIcon(KIcon(icon));
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}
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QIcon PushButton::icon() const
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{
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return nativeWidget()->icon();
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}
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void PushButton::setCheckable(bool checkable)
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{
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nativeWidget()->setCheckable(checkable);
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}
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bool PushButton::isCheckable() const
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{
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return nativeWidget()->isCheckable();
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}
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void PushButton::setChecked(bool checked)
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{
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nativeWidget()->setChecked(checked);
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}
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void PushButton::click()
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{
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nativeWidget()->animateClick();
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}
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bool PushButton::isChecked() const
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{
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return nativeWidget()->isChecked();
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}
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bool PushButton::isDown() const
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{
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return nativeWidget()->isDown();
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}
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KPushButton *PushButton::nativeWidget() const
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{
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return static_cast<KPushButton*>(widget());
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}
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void PushButton::resizeEvent(QGraphicsSceneResizeEvent *event)
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{
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d->setPixmap();
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if (d->background) {
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//resize all four panels
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d->background->setElementPrefix("pressed");
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d->background->resizeFrame(size());
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d->syncActiveRect();
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d->background->setElementPrefix("active");
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d->background->resizeFrame(d->activeRect.size());
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d->hoverAnimation->setProperty("targetPixmap", d->background->framePixmap());
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d->background->setElementPrefix("focus");
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d->background->resizeFrame(d->activeRect.size());
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d->background->setElementPrefix("normal");
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d->background->resizeFrame(size());
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d->hoverAnimation->setProperty("startPixmap", d->background->framePixmap());
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}
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QGraphicsProxyWidget::resizeEvent(event);
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}
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void PushButton::paint(QPainter *painter,
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const QStyleOptionGraphicsItem *option,
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QWidget *widget)
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{
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if (!styleSheet().isNull() || Theme::defaultTheme()->useNativeWidgetStyle()) {
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QGraphicsProxyWidget::paint(painter, option, widget);
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return;
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}
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QPixmap bufferPixmap;
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//Normal button, pressed or not
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if (isEnabled()) {
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if (nativeWidget()->isDown() || nativeWidget()->isChecked()) {
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d->background->setElementPrefix("pressed");
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} else {
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d->background->setElementPrefix("normal");
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}
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//flat or disabled
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} else if (!isEnabled() || nativeWidget()->isFlat()) {
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bufferPixmap = QPixmap(rect().size().toSize());
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bufferPixmap.fill(Qt::transparent);
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QPainter buffPainter(&bufferPixmap);
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d->background->paintFrame(&buffPainter);
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buffPainter.setCompositionMode(QPainter::CompositionMode_DestinationIn);
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buffPainter.fillRect(bufferPixmap.rect(), QColor(0, 0, 0, 128));
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painter->drawPixmap(0, 0, bufferPixmap);
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}
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//if is under mouse draw the animated glow overlay
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if (!nativeWidget()->isDown() && !nativeWidget()->isChecked() && isEnabled() && acceptHoverEvents() && d->background->hasElementPrefix("active")) {
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if (d->hoverAnimation->state() == QAbstractAnimation::Running && !isUnderMouse() && !nativeWidget()->isDefault()) {
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d->background->setElementPrefix("active");
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d->background->paintFrame(painter, d->activeRect.topLeft());
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} else {
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painter->drawPixmap(
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d->activeRect.topLeft(),
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d->hoverAnimation->property("currentPixmap").value<QPixmap>());
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}
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} else if (isEnabled()) {
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d->background->paintFrame(painter);
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}
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painter->setPen(Plasma::Theme::defaultTheme()->color(Theme::ButtonTextColor));
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if (nativeWidget()->isDown()) {
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painter->translate(QPoint(1, 1));
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}
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QRectF rect = contentsRect();
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if (!nativeWidget()->icon().isNull()) {
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const qreal iconSize = qMin(rect.width(), rect.height());
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QPixmap iconPix = nativeWidget()->icon().pixmap(iconSize);
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if (!isEnabled()) {
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KIconEffect *effect = KIconLoader::global()->iconEffect();
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iconPix = effect->apply(iconPix, KIconLoader::Toolbar, KIconLoader::DisabledState);
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}
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QRect pixmapRect;
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if (nativeWidget()->text().isEmpty()) {
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pixmapRect = nativeWidget()->style()->alignedRect(option->direction, Qt::AlignCenter, iconPix.size(), rect.toRect());
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} else {
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pixmapRect = nativeWidget()->style()->alignedRect(option->direction, Qt::AlignLeft|Qt::AlignVCenter, iconPix.size(), rect.toRect());
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}
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painter->drawPixmap(pixmapRect.topLeft(), iconPix);
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if (option->direction == Qt::LeftToRight) {
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rect.adjust(rect.height(), 0, 0, 0);
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} else {
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rect.adjust(0, 0, -rect.height(), 0);
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}
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}
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QFont widgetFont;
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if (d->customFont) {
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widgetFont = font();
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} else {
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widgetFont = Plasma::Theme::defaultTheme()->font(Plasma::Theme::DefaultFont);
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}
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QFontMetricsF fm(widgetFont);
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// If the height is too small increase the Height of the button to shall the whole text #192988
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if (rect.height() < fm.height()) {
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rect.setHeight(fm.height());
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rect.moveTop(boundingRect().center().y() - rect.height() / 2);
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}
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// If there is not enough room for the text make it to fade out
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if (rect.width() < fm.width(nativeWidget()->text())) {
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if (bufferPixmap.isNull()) {
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bufferPixmap = QPixmap(rect.size().toSize());
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}
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bufferPixmap.fill(Qt::transparent);
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QPainter p(&bufferPixmap);
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p.setPen(painter->pen());
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p.setFont(widgetFont);
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// Create the alpha gradient for the fade out effect
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QLinearGradient alphaGradient(0, 0, 1, 0);
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alphaGradient.setCoordinateMode(QGradient::ObjectBoundingMode);
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if (option->direction == Qt::LeftToRight) {
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alphaGradient.setColorAt(0, QColor(0, 0, 0, 255));
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alphaGradient.setColorAt(1, QColor(0, 0, 0, 0));
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p.drawText(bufferPixmap.rect(), Qt::AlignLeft|Qt::AlignVCenter|Qt::TextShowMnemonic,
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nativeWidget()->text());
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} else {
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alphaGradient.setColorAt(0, QColor(0, 0, 0, 0));
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alphaGradient.setColorAt(1, QColor(0, 0, 0, 255));
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p.drawText(bufferPixmap.rect(), Qt::AlignRight|Qt::AlignVCenter|Qt::TextShowMnemonic,
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nativeWidget()->text());
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}
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p.setCompositionMode(QPainter::CompositionMode_DestinationIn);
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p.fillRect(bufferPixmap.rect(), alphaGradient);
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painter->drawPixmap(rect.topLeft(), bufferPixmap);
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} else {
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painter->setFont(widgetFont);
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painter->drawText(rect, Qt::AlignCenter|Qt::TextShowMnemonic, nativeWidget()->text());
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}
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}
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void PushButton::hoverEnterEvent(QGraphicsSceneHoverEvent *event)
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{
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if (nativeWidget()->isDown() || d->background->hasElementPrefix("hover")) {
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return;
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}
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d->hoverAnimation->setProperty("duration", 75);
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d->background->setElementPrefix("normal");
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d->hoverAnimation->setProperty("startPixmap", d->background->framePixmap());
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d->background->setElementPrefix("active");
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d->hoverAnimation->setProperty("targetPixmap", d->background->framePixmap());
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d->hoverAnimation->start();
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QGraphicsProxyWidget::hoverEnterEvent(event);
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}
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void PushButton::changeEvent(QEvent *event)
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{
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if (event->type() == QEvent::FontChange) {
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d->customFont = true;
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}
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QGraphicsProxyWidget::changeEvent(event);
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}
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void PushButton::hoverLeaveEvent(QGraphicsSceneHoverEvent *event)
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{
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if (nativeWidget()->isDown() || d->background->hasElementPrefix("hover")) {
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return;
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}
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d->hoverAnimation->setProperty("duration", 150);
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d->background->setElementPrefix("active");
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d->hoverAnimation->setProperty("startPixmap", d->background->framePixmap());
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d->background->setElementPrefix("normal");
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d->hoverAnimation->setProperty("targetPixmap", d->background->framePixmap());
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d->hoverAnimation->start();
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QGraphicsProxyWidget::hoverLeaveEvent(event);
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}
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QSizeF PushButton::sizeHint(Qt::SizeHint which, const QSizeF & constraint) const
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{
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QSizeF hint = QGraphicsProxyWidget::sizeHint(which, constraint);
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if (hint.isEmpty()) {
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return hint;
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}
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//replace the native margin with the Svg one
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QStyleOption option;
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option.initFrom(nativeWidget());
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int nativeMargin = nativeWidget()->style()->pixelMetric(QStyle::PM_ButtonMargin, &option, nativeWidget());
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qreal left, top, right, bottom;
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d->background->getMargins(left, top, right, bottom);
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hint = hint - QSize(nativeMargin, nativeMargin) + QSize(left+right, top+bottom);
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return hint;
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}
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} // namespace Plasma
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#include <pushbutton.moc>
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