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plasma-framework/widgets/icon.cpp
Riccardo Iaconelli 7a70eac7fe Much nicer icons. 
Implemented the concept for icons from David Vignoni (screencast coming...).
Context menu now shows "Plasma".

svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=676455
2007-06-16 22:35:31 +00:00

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/*
* Copyright (C) 2007 by Aaron Seigo aseigo@kde.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License version 2 as
* published by the Free Software Foundation
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details
*
* You should have received a copy of the GNU Library General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "icon.h"
#include <QTimeLine>
#include <QPainter>
#include <QGraphicsSceneMouseEvent>
#include <QGraphicsView>
// #define PROVE_IT_CAN_BE_DONE
#ifdef PROVE_IT_CAN_BE_DONE
#include <private/qwindowsurface_p.h>
#endif
#include <KIcon>
#include <KImageEffect>
#include <KUrl>
#include <KRun>
#include <KMimeType>
#include <KDebug>
#include "svg.h"
#include "effects/blur.cpp"
namespace Plasma
{
class Icon::Private
{
public:
Private()
: size(128*1.1, 128*1.1),
iconSize(128, 128),
state(Private::NoState),
svg("widgets/iconbutton")
{
svg.setContentType(Plasma::Svg::ImageSet);
svg.resize(size);
if (svg.elementExists("background")) {
svgElements |= SvgBackground;
}
if (svg.elementExists("background-hover")) {
svgElements |= SvgBackgroundHover;
}
if (svg.elementExists("background-pressed")) {
svgElements |= SvgBackgroundPressed;
}
if (svg.elementExists("foreground")) {
svgElements |= SvgForeground;
}
if (svg.elementExists("foreground-hover")) {
svgElements |= SvgForegroundHover;
}
if (svg.elementExists("foreground-pressed")) {
svgElements |= SvgForegroundPressed;
}
stepMenu = 0;
timeline = new QTimeLine;
button1Pressed = false;
button1Hovered = false;
}
~Private() {}
enum ButtonState
{
NoState,
HoverState,
PressedState
};
enum { NoSvg = 0,
SvgBackground = 1,
SvgBackgroundHover = 2,
SvgBackgroundPressed = 4,
SvgForeground = 8,
SvgForegroundHover = 16,
SvgForegroundPressed = 32 };
KUrl url;
QString text;
QSizeF size;
QSizeF iconSize;
QIcon icon;
QTimeLine *timeline;
ButtonState state;
Svg svg;
int svgElements;
int stepMenu;
bool button1Hovered;
bool button1Pressed;
};
Icon::Icon(QGraphicsItem *parent)
: QObject(),
QGraphicsItem(parent),
d(new Private)
{
setAcceptedMouseButtons(Qt::LeftButton);
setAcceptsHoverEvents(true);
setEnabled(true);
setFlags(ItemIsMovable);
setPos(QPointF(0.0,0.0));
d->timeline->setDuration(500);
}
Icon::~Icon()
{
delete d;
}
QRectF Icon::boundingRect() const
{
return QRectF(QPointF(0, 0), d->size);
}
void Icon::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
Q_UNUSED(option)
Q_UNUSED(widget)
#ifdef PROVE_IT_CAN_BE_DONE
// if (d->state == Private::HoverState && scene()) {
// QList<QGraphicsView*> views = scene()->views();
// if (views.count() > 0) {
// QPixmap* pix = static_cast<QPixmap*>(views[0]->windowSurface()->paintDevice());
// QImage image(boundingRect().size().toSize(), QImage::Format_ARGB32_Premultiplied);
// {
// QPainter p(&image);
// p.drawPixmap(image.rect(), *pix, sceneBoundingRect());
// }
// expblur<16,7>(image, 8);
// painter->save();
// painter->drawImage(0, 0, image);
// painter->restore();
// }
// }
#endif
QString element;
if (d->svgElements & Private::SvgBackground) {
element = "background";
}
switch (d->state) {
case Private::NoState:
element = "background";
break;
case Private::HoverState:
if (d->svgElements & Private::SvgBackgroundHover) {
element = "background-hover";
}
break;
case Private::PressedState:
if (d->svgElements & Private::SvgBackgroundPressed) {
element = "background-pressed";
} else if (d->svgElements & Private::SvgBackgroundHover) {
element = "background-hover";
}
break;
}
if (!element.isEmpty()) {
d->svg.paint(painter, 0, 0, element);
element = QString();
}
if (!d->icon.isNull()) {
qreal iw = d->iconSize.width();
qreal ih = d->iconSize.height();
qreal deltaX = (d->size.width() - iw) / 2;
qreal deltaY = (d->size.height() - ih) / 2 ;
if(d->state == Private::PressedState)
{
painter->save();
painter->setRenderHint(QPainter::SmoothPixmapTransform);
painter->scale(0.95, 0.95);
deltaY *= 0.95;
deltaX *= 0.95;
painter->drawPixmap((int)(deltaX + (iw * .025)), (int)(deltaY + (ih * .025)),
d->icon.pixmap(d->iconSize.toSize()));
painter->restore();
}
else
{
painter->drawPixmap((int)deltaX, (int)deltaY, d->icon.pixmap(d->iconSize.toSize()));
}
}
//TODO: draw text
// Make it default
if (d->svgElements & Private::SvgForeground) {
element = "foreground";
}
switch (d->state) {
case Private::NoState:
element = "foreground";
break;
case Private::HoverState:
if (d->svgElements & Private::SvgForegroundHover) {
element = "foreground-hover";
}
break;
case Private::PressedState:
if (d->svgElements & Private::SvgForegroundPressed) {
element = "foreground-pressed";
} else if (d->svgElements & Private::SvgForegroundHover) {
element = "foreground-hover";
}
break;
}
//paint foreground element
if (!element.isEmpty()) {
//kDebug() << "painting " << element << endl;
d->svg.paint(painter, 0, 0, element);
}
// Draw top-left button
QColor colorButton1;
if (d->button1Hovered) {
// colorButton1 = QColor(0, 49, 110); //Oxygen color
element = "button1-hover";
} else if (d->button1Pressed) {
// colorButton1 = QColor(29, 10, 85); //Oxygen color
element = "button1-pressed";
} else {
// colorButton1 = QColor(0, 67, 138); //Oxygen color
element = "button1";
}
KIcon exec("exec");
painter->setRenderHint(QPainter::Antialiasing);
painter->setOpacity(d->stepMenu*0.04);
// painter->setBrush(colorButton1);
painter->setPen(Qt::NoPen);
if (!element.isEmpty()) {
//kDebug() << "painting " << element << endl;
d->svg.paint(painter, QRect(6, 6, 32, 32), element);
}
painter->drawPixmap(11, 11, exec.pixmap(22,22));
}
void Icon::animateBubbles(int step)
{
d->stepMenu = step;
// kDebug() << "pop in: " << d->stepMenu << endl;
update();
}
void Icon::setText(const QString& text)
{
d->text = text;
//TODO: implement this puppy calculateSize();
}
QString Icon::text() const
{
return d->text;
}
void Icon::setIcon(const QString& icon)
{
kDebug() << "Icon set: " << icon << endl;
if (icon.isEmpty()) {
setIcon(QIcon());
return;
}
setIcon(KIcon(icon));
}
void Icon::setIcon(const QIcon& icon)
{
d->icon = icon;
update();
}
void Icon::setUrl(const KUrl& url)
{
d->url = url;
}
QSizeF Icon::size() const
{
return d->size;
}
QSizeF Icon::iconSize() const
{
return d->iconSize;
}
void Icon::setSize(const QSizeF& s)
{
prepareGeometryChange();
d->iconSize = s;
d->size = s * 1.1;
d->svg.resize(d->size);
update();
}
void Icon::setSize(int w, int h)
{
setSize(QSizeF(w, h));
}
bool Icon::isDown()
{
return d->state == Private::PressedState;
}
void Icon::mousePressEvent(QGraphicsSceneMouseEvent *event)
{
QRectF button1(6, 6, 32, 32); // The top-left circle
if (button1.contains(event->pos())) {
if (d->url.isValid()) {
KRun::runUrl(d->url, KMimeType::findByUrl(d->url)->name(), 0);
}
d->button1Pressed = true;
} else {
d->state = Private::PressedState;
QGraphicsItem::mousePressEvent(event);
update();
d->button1Pressed = false;
}
}
void Icon::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
{
bool inside = boundingRect().contains(event->pos());
bool wasClicked = d->state == Private::PressedState && inside;
if (inside) {
d->state = Private::HoverState;
} else {
d->state = Private::NoState;
}
if (wasClicked) {
emit pressed(false);
emit clicked();
}
d->button1Pressed = false;
QRectF button1(6, 6, 32, 32); // The top-left circle
if (button1.contains(event->pos())) {
d->button1Hovered = true;
} else {
d->button1Hovered = false;
}
QGraphicsItem::mouseReleaseEvent(event);
update();
}
void Icon::hoverEnterEvent(QGraphicsSceneHoverEvent *event)
{
d->button1Pressed = false;
QRectF button1(6, 6, 32, 32); // The top-left circle
if (button1.contains(event->pos())) {
d->button1Hovered = true;
} else {
d->button1Hovered = false;
}
if (d->timeline->state() == QTimeLine::Running) {
d->timeline->setPaused(true);
}
d->timeline->setFrameRange(0, 25);
d->timeline->setDirection(QTimeLine::Forward);
connect(d->timeline, SIGNAL(frameChanged(int)), this, SLOT(animateBubbles(int)));
d->state = Private::HoverState;
QGraphicsItem::hoverEnterEvent(event);
d->timeline->start();
}
void Icon::hoverLeaveEvent(QGraphicsSceneHoverEvent *event)
{
if (d->timeline->state() == QTimeLine::Running) {
d->timeline->setPaused(true);
}
d->timeline->setFrameRange(0, 25);
d->timeline->setDirection(QTimeLine::Backward);
connect(d->timeline, SIGNAL(frameChanged(int)), this, SLOT(animateBubbles(int)));
d->state = Private::HoverState;
QGraphicsItem::hoverEnterEvent(event);
d->timeline->start();
d->state = Private::NoState;
QGraphicsItem::hoverLeaveEvent(event);
}
QSizeF Icon::sizeHint() const
{
return d->size;
}
QSizeF Icon::minimumSize() const
{
return d->size; // probably should be more flexible on this =)
}
QSizeF Icon::maximumSize() const
{
return d->size;
}
Qt::Orientations Icon::expandingDirections() const
{
return Qt::Horizontal;
}
bool Icon::hasHeightForWidth() const
{
return true;
}
qreal Icon::heightForWidth(qreal w) const
{
return w; //FIXME: we shouldn't assume squareness but actually calculate based on text and what not
}
bool Icon::hasWidthForHeight() const
{
return true;
}
qreal Icon::widthForHeight(qreal h) const
{
return h; //FIXME: we shouldn't assume squareness but actually calculate based on text and what not
}
QRectF Icon::geometry() const
{
return boundingRect().toRect();
}
void Icon::setGeometry(const QRectF &r)
{
setSize(r.size());
setPos(r.x(),r.y());
}
int Icon::boundsForIconSize(int iconSize)
{
return iconSize * 1.1;
}
} // namespace Plasma
#include "icon.moc"
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