381 lines
8.7 KiB
C++
381 lines
8.7 KiB
C++
/*
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* Copyright (C) 2007 by Aaron Seigo aseigo@kde.org
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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 version 2 as
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* published by the Free Software Foundation
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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 "icon.h"
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#include <QPainter>
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#include <QGraphicsSceneMouseEvent>
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#include <QGraphicsView>
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//#define PROVE_IT_CAN_BE_DONE
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#ifdef PROVE_IT_CAN_BE_DONE
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#include <private/qwindowsurface_p.h>
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#endif
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#include <KIcon>
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#include <KImageEffect>
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#include <KDebug>
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#include "svg.h"
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#include "effects/blur.cpp"
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namespace Plasma
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{
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class Icon::Private
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{
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public:
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Private()
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: size(128*1.1, 128*1.1),
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iconSize(128, 128),
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state(Private::NoState),
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svg("widgets/iconbutton")
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{
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svg.setContentType(Plasma::Svg::ImageSet);
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svg.resize(size);
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if (svg.elementExists("background")) {
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svgElements |= SvgBackground;
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}
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if (svg.elementExists("background-hover")) {
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svgElements |= SvgBackgroundHover;
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}
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if (svg.elementExists("background-pressed")) {
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svgElements |= SvgBackgroundPressed;
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}
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if (svg.elementExists("foreground")) {
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svgElements |= SvgForeground;
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}
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if (svg.elementExists("foreground-hover")) {
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svgElements |= SvgForegroundHover;
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}
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if (svg.elementExists("foreground-pressed")) {
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svgElements |= SvgForegroundPressed;
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}
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}
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~Private() {}
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enum ButtonState
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{
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NoState,
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HoverState,
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PressedState
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};
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enum { NoSvg = 0,
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SvgBackground = 1,
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SvgBackgroundHover = 2,
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SvgBackgroundPressed = 4,
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SvgForeground = 8,
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SvgForegroundHover = 16,
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SvgForegroundPressed = 32 };
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QString text;
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QSizeF size;
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QSizeF iconSize;
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QIcon icon;
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ButtonState state;
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Svg svg;
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int svgElements;
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};
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Icon::Icon(QGraphicsItem *parent)
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: QObject(),
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QGraphicsItem(parent),
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d(new Private)
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{
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setAcceptedMouseButtons(Qt::LeftButton);
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setAcceptsHoverEvents(true);
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setEnabled(true);
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setFlags(ItemIsMovable);
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setPos(QPointF(0.0,0.0));
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}
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Icon::~Icon()
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{
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delete d;
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}
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QRectF Icon::boundingRect() const
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{
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return QRectF(QPointF(0, 0), d->size);
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}
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void Icon::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
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{
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Q_UNUSED(option)
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Q_UNUSED(widget)
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#ifdef PROVE_IT_CAN_BE_DONE
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if (d->state == Private::HoverState && scene()) {
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QList<QGraphicsView*> views = scene()->views();
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if (views.count() > 0) {
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QPixmap* pix = static_cast<QPixmap*>(views[0]->windowSurface()->paintDevice());
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QImage image(boundingRect().size().toSize(), QImage::Format_ARGB32_Premultiplied);
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{
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QPainter p(&image);
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p.drawPixmap(image.rect(), *pix, sceneBoundingRect());
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}
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expblur<16,7>(image, 10);
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painter->save();
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painter->drawImage(0, 0, image);
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painter->restore();
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}
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}
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#endif
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QString element;
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if (d->svgElements & Private::SvgBackground) {
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element = "background";
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}
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switch (d->state) {
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case Private::NoState:
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break;
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case Private::HoverState:
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if (d->svgElements & Private::SvgBackgroundHover) {
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element = "background-hover";
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}
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break;
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case Private::PressedState:
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if (d->svgElements & Private::SvgBackgroundPressed) {
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element = "background-pressed";
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} else if (d->svgElements & Private::SvgBackgroundHover) {
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element = "background-hover";
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}
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break;
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}
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if (!element.isEmpty()) {
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d->svg.paint(painter, 0, 0, element);
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element = QString();
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}
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if (!d->icon.isNull()) {
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qreal iw = d->iconSize.width();
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qreal ih = d->iconSize.height();
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qreal deltaX = (d->size.width() - iw) / 2;
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qreal deltaY = (d->size.height() - ih) / 2 ;
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if(d->state == Private::PressedState)
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{
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painter->save();
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painter->setRenderHint(QPainter::SmoothPixmapTransform);
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painter->scale(0.95, 0.95);
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deltaY *= 0.95;
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deltaX *= 0.95;
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painter->drawPixmap(deltaX + (iw * .025), deltaY + (ih * .025),
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d->icon.pixmap(d->iconSize.toSize()));
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painter->restore();
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}
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else
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{
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painter->drawPixmap(deltaX, deltaY, d->icon.pixmap(d->iconSize.toSize()));
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}
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}
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//TODO: draw text
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if (d->svgElements & Private::SvgForeground) {
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element = "foreground";
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}
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switch (d->state) {
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case Private::NoState:
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break;
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case Private::HoverState:
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if (d->svgElements & Private::SvgForegroundHover) {
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element = "foreground-hover";
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}
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break;
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case Private::PressedState:
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if (d->svgElements & Private::SvgForegroundPressed) {
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element = "foreground-pressed";
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} else if (d->svgElements & Private::SvgForegroundHover) {
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element = "foreground-hover";
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}
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break;
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}
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if (!element.isEmpty()) {
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//kDebug() << "painting " << element << endl;
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d->svg.paint(painter, 0, 0, element);
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}
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}
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void Icon::setText(const QString& text)
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{
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d->text = text;
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//TODO: implement this puppy calculateSize();
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}
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QString Icon::text() const
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{
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return d->text;
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}
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void Icon::setIcon(const QString& icon)
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{
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if (icon.isEmpty()) {
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setIcon(QIcon());
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return;
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}
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setIcon(KIcon(icon));
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}
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void Icon::setIcon(const QIcon& icon)
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{
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d->icon = icon;
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update();
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}
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QSizeF Icon::size() const
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{
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return d->size;
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}
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QSizeF Icon::iconSize() const
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{
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return d->iconSize;
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}
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void Icon::setSize(const QSizeF& s)
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{
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prepareGeometryChange();
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d->iconSize = s;
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d->size = s * 1.1;
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d->svg.resize(d->size);
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update();
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}
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void Icon::setSize(int w, int h)
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{
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setSize(QSizeF(w, h));
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}
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bool Icon::isDown()
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{
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return d->state == Private::PressedState;
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}
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void Icon::mousePressEvent(QGraphicsSceneMouseEvent *event)
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{
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d->state = Private::PressedState;
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emit pressed(true);
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QGraphicsItem::mousePressEvent(event);
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update();
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}
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void Icon::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
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{
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bool inside = boundingRect().contains(event->pos());
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bool wasClicked = d->state == Private::PressedState && inside;
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if (inside) {
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d->state = Private::HoverState;
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} else {
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d->state = Private::NoState;
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}
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if (wasClicked) {
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emit pressed(false);
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emit clicked();
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}
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QGraphicsItem::mouseReleaseEvent(event);
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update();
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}
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void Icon::hoverEnterEvent(QGraphicsSceneHoverEvent *event)
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{
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d->state = Private::HoverState;
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QGraphicsItem::hoverEnterEvent(event);
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}
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void Icon::hoverLeaveEvent(QGraphicsSceneHoverEvent *event)
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{
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d->state = Private::NoState;
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QGraphicsItem::hoverLeaveEvent(event);
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}
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QSizeF Icon::sizeHint() const
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{
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return d->size;
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}
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QSizeF Icon::minimumSize() const
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{
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return d->size; // probably should be more flexible on this =)
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}
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QSizeF Icon::maximumSize() const
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{
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return d->size;
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}
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Qt::Orientations Icon::expandingDirections() const
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{
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return Qt::Horizontal;
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}
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bool Icon::hasHeightForWidth() const
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{
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return true;
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}
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qreal Icon::heightForWidth(qreal w) const
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{
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return w; //FIXME: we shouldn't assume squareness but actually calculate based on text and what not
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}
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bool Icon::hasWidthForHeight() const
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{
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return true;
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}
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qreal Icon::widthForHeight(qreal h) const
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{
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return h; //FIXME: we shouldn't assume squareness but actually calculate based on text and what not
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}
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QRectF Icon::geometry() const
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{
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return boundingRect().toRect();
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}
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void Icon::setGeometry(const QRectF &r)
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{
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setSize(r.size());
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setPos(r.x(),r.y());
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}
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int Icon::boundsForIconSize(int iconSize)
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{
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return iconSize * 1.1;
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}
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} // namespace Plasma
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#include "icon.moc"
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