543 lines
14 KiB
C++
543 lines
14 KiB
C++
/*
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* Copyright (C) 2007 by Aaron Seigo aseigo@kde.org
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* Copyright (C) 2007 by Matt Broadstone <mbroadst@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 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 <QApplication>
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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 <KUrl>
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#include <KRun>
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#include <KMimeType>
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#include <KDebug>
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#include "phase.h"
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#include "svg.h"
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#include "effects/blur.cpp"
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#include "icon.h"
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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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svgElements(0),
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button1AnimId(0)
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{
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svg.setContentType(Plasma::Svg::ImageSet);
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svg.resize(size);
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//TODO: recheck when svg changes
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checkSvgElements();
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}
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void checkSvgElements()
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{
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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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if (svg.elementExists("minibutton")) {
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svgElements |= SvgMinibutton;
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}
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if (svg.elementExists("minibutton-hover")) {
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svgElements |= SvgMinibuttonHover;
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}
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if (svg.elementExists("minibutton-pressed")) {
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svgElements |= SvgMinibuttonPressed;
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}
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button1Pressed = false;
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button1Hovered = false;
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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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SvgMinibutton = 64,
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SvgMinibuttonHover = 256,
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SvgMinibuttonPressed = 128};
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// KUrl url;
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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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//TODO: create a proper state int for this, as we do with ButtonState
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// for each possible button
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bool button1Hovered;
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bool button1Pressed;
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Phase::AnimId button1AnimId;
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};
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Icon::Icon(QGraphicsItem *parent)
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: QGraphicsItem(parent),
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d(new Private)
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{
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init();
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}
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Icon::Icon(const QString &text, QGraphicsItem *parent)
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: QGraphicsItem(parent),
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d(new Private)
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{
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setText(text);
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init();
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}
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Icon::Icon(const QIcon &icon, const QString &text, QGraphicsItem *parent)
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: QGraphicsItem(parent),
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d(new Private)
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{
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setText(text);
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setIcon(icon);
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init();
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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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void Icon::init()
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{
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setAcceptedMouseButtons(Qt::LeftButton);
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setAcceptsHoverEvents(true);
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}
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void Icon::calculateSize()
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{
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prepareGeometryChange();
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QFontMetrics fm(QApplication::font()); // TODO: get the font somewhere more appropriate
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QSizeF fmSize = fm.size(Qt::AlignHCenter | Qt::AlignTop, d->text);
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int margin = 6; // hmmm
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qreal height = d->iconSize.height() + (margin*2) + fmSize.height();
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qreal width = margin + qMax(fmSize.width(), d->iconSize.width()) + margin;
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d->size = QSizeF(width, height);
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d->svg.resize(d->size);
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update();
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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, 8);
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painter->drawImage(0, 0, image);
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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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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((int)(deltaX + (iw * .025)), (int)(deltaY + (ih * .025)),
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d->icon.pixmap(d->iconSize.toSize()));
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painter->restore();
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} else {
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painter->drawPixmap((int)deltaX, (int)deltaY, d->icon.pixmap(d->iconSize.toSize()));
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}
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}
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// Make it default
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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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element.clear();
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}
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// Draw top-left button
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if (d->button1AnimId) {
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painter->drawPixmap(6, 6, Phase::self()->animationResult(d->button1AnimId));
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}
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// Draw text last because its overlayed
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if (!d->text.isEmpty()) {
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qreal offset = (d->iconSize.height() + 12); // TODO this shouldn't be hardcoded?
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QRectF textRect(0, offset, d->size.width(), d->size.height() - offset);
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QTextOption textOpt;
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textOpt.setAlignment(Qt::AlignHCenter | Qt::AlignTop);
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textOpt.setWrapMode(QTextOption::WordWrap);
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painter->setPen(Qt::white);
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painter->drawText(textRect, d->text, textOpt);
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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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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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calculateSize();
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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::setIconSize(const QSizeF& s)
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{
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d->iconSize = s;
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calculateSize();
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}
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void Icon::setIconSize(int w, int h)
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{
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setIconSize(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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QRectF button1(6, 6, 32, 32); // The top-left circle
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d->button1Pressed = button1.contains(event->pos());
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if (!d->button1Pressed) {
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d->state = Private::PressedState;
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QGraphicsItem::mousePressEvent(event);
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update();
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d->button1Pressed = false;
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}
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}
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void Icon::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
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{
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kDebug() << "Icon::mouseReleaseEvent" <<endl;
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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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QRectF button1(6, 6, 32, 32); // The top-left circle
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d->button1Hovered = button1.contains(event->pos());
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/*
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if (d->button1Hovered &&
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d->button1Pressed && d->url.isValid()) {
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KRun::runUrl(d->url, KMimeType::findByUrl(d->url)->name(), 0);
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wasClicked = false;
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}
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*/
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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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d->button1Pressed = false;
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QGraphicsItem::mouseReleaseEvent(event);
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update();
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}
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QPixmap Icon::buttonPixmap()
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{
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//TODO this is just full of assumptions such as sizes and icon names. ugh!
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QPixmap pix(26, 26);
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pix.fill(Qt::transparent);
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QPainter painter(&pix);
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QString element;
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if (d->svgElements & Private::SvgMinibutton) {
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element = "minibutton";
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}
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if (d->button1Pressed) {
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if (d->svgElements & Private::SvgMinibuttonPressed) {
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element = "minibutton-pressed";
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} else if (d->svgElements & Private::SvgMinibuttonHover) {
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element = "minibutton-hover";
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}
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} else if (d->button1Hovered) {
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if (d->svgElements & Private::SvgMinibuttonHover) {
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element = "minibutton-hover";
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}
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}
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//paint foreground element
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if (!element.isEmpty()) {
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//kDebug() << "painting " << element << endl;
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d->svg.resize(pix.size());
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d->svg.paint(&painter, 0, 0, element);
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d->svg.resize(boundingRect().size());
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}
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KIcon exec("exec");
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painter.setRenderHint(QPainter::Antialiasing);
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painter.setPen(Qt::NoPen);
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painter.drawPixmap(2, 2, exec.pixmap(22,22));
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return pix;
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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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d->button1Pressed = false;
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QRectF button1(6, 6, 32, 32); // The top-left circle
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d->button1Hovered = button1.contains(event->pos());
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if (d->button1AnimId) {
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Phase::self()->stopElementAnimation(d->button1AnimId);
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}
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d->button1AnimId = Phase::self()->animateElement(this, Phase::ElementAppear);
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Phase::self()->setAnimationPixmap(d->button1AnimId, buttonPixmap());
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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->button1Pressed = false;
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d->button1Hovered = false;
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if (d->button1AnimId) {
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Phase::self()->stopElementAnimation(d->button1AnimId);
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}
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d->button1AnimId = Phase::self()->animateElement(this, Phase::ElementDisappear);
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Phase::self()->setAnimationPixmap(d->button1AnimId, buttonPixmap());
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d->state = Private::NoState;
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QGraphicsItem::hoverLeaveEvent(event);
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}
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void Icon::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
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{
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if (d->button1Pressed) {
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d->button1Pressed = false;
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}
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if (d->state == Private::PressedState) {
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d->state = Private::HoverState;
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}
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QGraphicsItem::mouseMoveEvent(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();
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}
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void Icon::setGeometry(const QRectF &r)
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{
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// TODO: this is wrong, but we should probably never call setGeometry anyway!
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setIconSize(r.size());
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setPos(r.x(),r.y());
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}
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} // namespace Plasma
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#include "icon.moc"
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