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plasma-framework/widgets/icon.cpp
Marco Martin 7d0889002c only emit pressed when the press event is inside the widget, don't know 
why it got passed in the first place but caused kickoff to being
activated when clicking on the taskbar on some circumstances

svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=822626
2008-06-20 20:48:49 +00:00

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/*
* Copyright 2007 by Aaron Seigo <aseigo@kde.org>
* Copyright 2007 by Riccardo Iaconelli <riccardo@kde.org>
* Copyright 2007 by Matt Broadstone <mbroadst@gmail.com>
* Copyright 2006-2007 Fredrik Höglund <fredrik@kde.org>
* Copyright 2007 by Marco Martin <notmart@gmail.com>
* Copyright 2008 by Alexis Ménard <darktears31@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License as
* published by the Free Software Foundation; either version 2, or
* (at your option) any later version.
*
* 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 "icon_p.h"
#include <QAction>
#include <QApplication>
#include <QPainter>
#include <QGraphicsSceneMouseEvent>
#include <QGraphicsView>
#include <QStyleOptionGraphicsItem>
#include <QTextLayout>
//#define BACKINGSTORE_BLUR_HACK
#ifdef BACKINGSTORE_BLUR_HACK
#include <private/qwindowsurface_p.h>
#include "effects/blur.cpp"
#endif
#include <KGlobalSettings>
#include <KIconEffect>
#include <KIconLoader>
#include <KIcon>
#include <KUrl>
#include <KRun>
#include <KMimeType>
#include <KDebug>
#include <KColorScheme>
#include <plasma/theme.h>
#include "animator.h"
#include "svg.h"
namespace Plasma
{
Icon::Private::Private(Icon *i)
: q(i),
iconSvg(0),
iconSize(48, 48),
states(Private::NoState),
orientation(Qt::Vertical),
numDisplayLines(2),
invertLayout(false),
drawBg(false),
action(0)
{
m_hoverAnimId = -1;
m_hoverAlpha = 20/255;
}
Icon::Private::~Private()
{
qDeleteAll(cornerActions);
delete iconSvg;
}
void Icon::readColors()
{
d->textColor = Plasma::Theme::defaultTheme()->color(Theme::TextColor);
d->shadowColor = Plasma::Theme::defaultTheme()->color(Theme::BackgroundColor);
}
IconAction::IconAction(Icon* icon, QAction *action)
: m_icon(icon),
m_action(action),
m_hovered(false),
m_pressed(false),
m_visible(false),
m_animationId(-1)
{
}
void IconAction::show()
{
if (m_animationId) {
Animator::self()->stopElementAnimation(m_animationId);
}
rebuildPixmap();
m_animationId = Animator::self()->animateElement(m_icon, Animator::AppearAnimation);
Animator::self()->setInitialPixmap(m_animationId, m_pixmap);
m_visible = true;
}
void IconAction::hide()
{
if (m_animationId) {
Animator::self()->stopElementAnimation(m_animationId);
}
rebuildPixmap();
m_animationId = Animator::self()->animateElement(m_icon, Animator::DisappearAnimation);
Animator::self()->setInitialPixmap(m_animationId, m_pixmap);
m_visible = false;
}
bool IconAction::isVisible() const
{
return m_visible;
}
bool IconAction::isPressed() const
{
return m_pressed;
}
bool IconAction::isHovered() const
{
return m_hovered;
}
void IconAction::setSelected(bool selected)
{
m_selected = selected;
}
bool IconAction::isSelected() const
{
return m_selected;
}
void IconAction::setRect(const QRectF &rect)
{
m_rect = rect;
}
QRectF IconAction::rect() const
{
return m_rect;
}
void IconAction::rebuildPixmap()
{
// Determine proper QIcon mode based on selection status
QIcon::Mode mode = QIcon::Normal;
if (m_selected) {
mode = QIcon::Selected;
}
// Draw everything
m_pixmap = QPixmap(26, 26);
m_pixmap.fill(Qt::transparent);
int element = Icon::Private::Minibutton;
if (m_pressed) {
element = Icon::Private::MinibuttonPressed;
} else if (m_hovered) {
element = Icon::Private::MinibuttonHover;
}
QPainter painter(&m_pixmap);
m_icon->drawActionButtonBase(&painter, m_pixmap.size(), element);
m_action->icon().paint(&painter, 2, 2, 22, 22, Qt::AlignCenter, mode);
}
bool IconAction::event(QEvent::Type type, const QPointF &pos)
{
if (m_icon->size().width() < m_rect.width()*2.0 ||
m_icon->size().height() < m_rect.height()*2.0) {
return false;
}
switch (type) {
case QEvent::GraphicsSceneMousePress: {
setSelected(m_rect.contains(pos));
return isSelected();
}
break;
case QEvent::GraphicsSceneMouseMove: {
bool wasSelected = isSelected();
bool active = m_rect.contains(pos);
setSelected(wasSelected && active);
return (wasSelected != isSelected()) || active;
}
break;
case QEvent::GraphicsSceneMouseRelease: {
// kDebug() << "IconAction::event got a QEvent::MouseButtonRelease, " << isSelected();
bool wasSelected = isSelected();
setSelected(false);
if (wasSelected) {
m_action->trigger();
}
return wasSelected;
}
break;
case QEvent::GraphicsSceneHoverEnter:
m_pressed = false;
m_hovered = true;
break;
case QEvent::GraphicsSceneHoverLeave:
m_pressed = false;
m_hovered = false;
break;
default:
break;
}
return false;
}
int IconAction::animationId() const
{
return m_animationId;
}
QAction* IconAction::action() const
{
return m_action;
}
void IconAction::paint(QPainter *painter) const
{
if (m_icon->size().width() < m_rect.width()*2.0 ||
m_icon->size().height() < m_rect.height()*2.0) {
return;
}
QPixmap animPixmap = Animator::self()->currentPixmap(m_animationId);
if (m_visible && animPixmap.isNull()) {
painter->drawPixmap(m_rect.toRect(), m_pixmap);
} else {
painter->drawPixmap(m_rect.toRect(), animPixmap);
}
}
Icon::Icon(QGraphicsItem *parent)
: QGraphicsWidget(parent),
d(new Private(this))
{
init();
}
Icon::Icon(const QString &text, QGraphicsItem *parent)
: QGraphicsWidget(parent),
d(new Private(this))
{
setText(text);
init();
}
Icon::Icon(const QIcon &icon, const QString &text, QGraphicsItem *parent)
: QGraphicsWidget(parent),
d(new Private(this))
{
setText(text);
setIcon(icon);
init();
}
Icon::~Icon()
{
delete d;
}
void Icon::init()
{
readColors();
connect(Plasma::Theme::defaultTheme(), SIGNAL(themeChanged()), SLOT(readColors()));
// setAcceptedMouseButtons(Qt::LeftButton);
setAcceptsHoverEvents(true);
int focusHMargin = QApplication::style()->pixelMetric(QStyle::PM_FocusFrameHMargin);
int focusVMargin = QApplication::style()->pixelMetric(QStyle::PM_FocusFrameVMargin);
// Margins for horizontal mode (list views, tree views, table views)
d->setHorizontalMargin(Private::TextMargin, focusHMargin, focusVMargin);
d->setHorizontalMargin(Private::IconMargin, focusHMargin, focusVMargin);
d->setHorizontalMargin(Private::ItemMargin, 0, 0);
// Margins for vertical mode (icon views)
d->setVerticalMargin(Private::TextMargin, 6, 2);
d->setVerticalMargin(Private::IconMargin, focusHMargin, focusVMargin);
d->setVerticalMargin(Private::ItemMargin, 0, 0);
d->setActiveMargins();
d->currentSize = QSizeF(-1, -1);
//setDrawStandardBackground(false);
}
void Icon::addIconAction(QAction *action)
{
int count = d->cornerActions.count();
if (count > 3) {
kDebug() << "no more room for more actions!";
}
IconAction* iconAction = new IconAction(this, action);
d->cornerActions.append(iconAction);
connect(action, SIGNAL(destroyed(QObject*)), this, SLOT(actionDestroyed(QObject*)));
iconAction->setRect(d->actionRect((Private::ActionPosition)count));
}
void Icon::setAction(QAction *action)
{
if (d->action) {
disconnect(d->action, 0, this, 0);
disconnect(this, 0, d->action, 0);
}
d->action = action;
if (action) {
connect(action, SIGNAL(changed()), this, SLOT(syncToAction()));
connect(this, SIGNAL(clicked()), action, SLOT(trigger()));
d->syncToAction();
}
}
QAction* Icon::action() const
{
return d->action;
}
void Icon::actionDestroyed(QObject* action)
{
QList<IconAction*>::iterator it = d->cornerActions.begin();
while (it != d->cornerActions.end()) {
if ((*it)->action() == action) {
d->cornerActions.erase(it);
break;
}
}
update(); // redraw since an action has been deleted.
}
int Icon::numDisplayLines()
{
return d->numDisplayLines;
}
void Icon::setNumDisplayLines(int numLines)
{
if(numLines > d->maxDisplayLines) {
d->numDisplayLines = d->maxDisplayLines;
} else {
d->numDisplayLines = numLines;
}
}
void Icon::setDrawBackground(bool draw)
{
if (d->drawBg != draw) {
d->drawBg = draw;
update();
}
}
bool Icon::drawBackground() const
{
return d->drawBg;
}
QPainterPath Icon::shape() const
{
if (d->currentSize.width() < 1) {
return QGraphicsItem::shape();
}
return roundedRectangle(QRectF(QPointF(0.0, 0.0), d->currentSize).adjusted(-2, -2, 2, 2), 10.0);
}
QSizeF Icon::Private::displaySizeHint(const QStyleOptionGraphicsItem *option, const qreal width) const
{
if (text.isEmpty() && infoText.isEmpty()) {
return QSizeF( .0, .0 );
}
QString label = text;
// const qreal maxWidth = (orientation == Qt::Vertical) ? iconSize.width() + 10 : 32757;
// NOTE: find a way to use the other layoutText, it currently returns nominal width, when
// we actually need the actual width.
qreal textWidth = width -
horizontalMargin[Private::TextMargin].left -
horizontalMargin[Private::TextMargin].right;
//allow only five lines of text
const qreal maxHeight = numDisplayLines*Plasma::Theme::defaultTheme()->fontMetrics().lineSpacing();
// To compute the nominal size for the label + info, we'll just append
// the information string to the label
if (!infoText.isEmpty()) {
label += QString(QChar::LineSeparator) + infoText;
}
QTextLayout layout;
setLayoutOptions(layout, option);
QSizeF size = layoutText(layout, option, label, QSizeF(textWidth, maxHeight));
return addMargin(size, TextMargin);
}
void Icon::layoutIcons(const QStyleOptionGraphicsItem *option)
{
if (size() == d->currentSize) {
return;
}
d->currentSize = size();
d->setActiveMargins();
//calculate icon size based on the available space
qreal iconWidth;
if (d->orientation == Qt::Vertical) {
qreal heightAvail;
//if there is text resize the icon in order to make room for the text
if (!d->text.isEmpty() || !d->infoText.isEmpty()) {
heightAvail = d->currentSize.height() -
d->displaySizeHint(option, d->currentSize.width()).height() -
d->verticalMargin[Private::TextMargin].top -
d->verticalMargin[Private::TextMargin].bottom;
//never make a label higher than half the total height
heightAvail = qMax(heightAvail, d->currentSize.height()/2);
} else {
heightAvail = d->currentSize.height();
}
//aspect ratio very "tall"
if (d->currentSize.width() < heightAvail) {
iconWidth = d->currentSize.width() -
d->horizontalMargin[Private::IconMargin].left -
d->horizontalMargin[Private::IconMargin].right;
} else {
iconWidth = heightAvail -
d->verticalMargin[Private::IconMargin].top -
d->verticalMargin[Private::IconMargin].bottom;
}
} else {
//Horizontal layout
QFontMetricsF fm(font());
//if there is text resize the icon in order to make room for the text
if (d->text.isEmpty() && d->infoText.isEmpty()) {
// with no text, we just take up the whole geometry
iconWidth = d->currentSize.width() -
d->horizontalMargin[Private::IconMargin].left -
d->horizontalMargin[Private::IconMargin].right;
} else {
iconWidth = d->currentSize.height() -
d->verticalMargin[Private::IconMargin].top -
d->verticalMargin[Private::IconMargin].bottom;
}
}
d->iconSize = QSizeF(iconWidth, iconWidth);
int count = 0;
foreach (IconAction* iconAction, d->cornerActions) {
iconAction->setRect(d->actionRect((Private::ActionPosition)count));
++count;
}
}
void Icon::setSvg(const QString &svgFilePath, const QString &elementId)
{
if (!d->iconSvg) {
d->iconSvg = new Plasma::Svg();
}
d->iconSvg->setImagePath(svgFilePath);
d->iconSvgElement = elementId;
}
void Icon::hoverEffect(bool show)
{
if (show) {
d->states |= Private::HoverState;
}
if (d->m_hoverAnimId == -1 && !d->drawBg) {
// we do this only when we don't do the anim, because
// this gets set at animation end when we are animating
if (!show) {
d->states &= ~Private::HoverState;
}
return;
}
d->m_fadeIn = show;
const int FadeInDuration = 150;
if (d->m_hoverAnimId != -1) {
Animator::self()->stopCustomAnimation(d->m_hoverAnimId);
}
d->m_hoverAnimId = Animator::self()->customAnimation(40 / (1000 / FadeInDuration), FadeInDuration,
Animator::EaseOutCurve, this,
"hoverAnimationUpdate");
}
void Icon::hoverAnimationUpdate(qreal progress)
{
if (d->m_fadeIn) {
d->m_hoverAlpha = progress;
} else {
// If we mouse leaves before the fade in is done, fade out from where we were,
// not from fully faded in
qreal new_alpha = d->m_fadeIn ? progress : 1 - progress;
d->m_hoverAlpha = qMin(new_alpha, d->m_hoverAlpha);
}
if (progress == 1) {
d->m_hoverAnimId = -1;
}
if (!d->m_fadeIn && progress == 1 ) {
d->states &= ~Private::HoverState;
}
update();
}
void Icon::Private::drawBackground(QPainter *painter, IconState state)
{
if (!drawBg) {
return;
}
bool darkShadow = shadowColor.value() < 128;
QColor shadow = shadowColor;
QColor border = textColor;
switch (state) {
case Private::HoverState:
shadow.setHsv(shadow.hue(),
shadow.saturation(),
shadow.value() + (int)(darkShadow ? 50 * m_hoverAlpha: -50 * m_hoverAlpha),
200 + (int)m_hoverAlpha * 55); // opacity
break;
case Private::PressedState:
shadow.setHsv(shadow.hue(),
shadow.saturation(),
shadow.value() + (darkShadow?(int)(50*m_hoverAlpha):(int)(-50*m_hoverAlpha)),
204); //80% opacity
break;
default:
break;
}
border.setAlphaF(.2);
shadow.setAlphaF(.6);
painter->save();
painter->translate(0.5, 0.5);
painter->setRenderHint(QPainter::Antialiasing);
painter->setBrush(shadow);
painter->setPen(QPen(border, 1));
painter->drawPath(roundedRectangle(QRectF(QPointF(1, 1), QSize((int)currentSize.width()-2, (int)currentSize.height()-2)), 5.0));
painter->restore();
}
QPixmap Icon::Private::decoration(const QStyleOptionGraphicsItem *option, bool useHoverEffect)
{
QPixmap result;
QIcon::Mode mode = option->state & QStyle::State_Enabled ? QIcon::Normal : QIcon::Disabled;
QIcon::State state = option->state & QStyle::State_Open ? QIcon::On : QIcon::Off;
if (iconSvg) {
if (iconSvgPixmap.size() != iconSize.toSize()) {
QImage img(iconSize.toSize(), QImage::Format_ARGB32_Premultiplied);
{
img.fill(0);
QPainter p(&img);
iconSvg->resize(iconSize);
iconSvg->paint(&p, img.rect(), iconSvgElement);
}
iconSvgPixmap = QPixmap::fromImage(img);
}
result = iconSvgPixmap;
} else {
const QSize size = icon.actualSize(iconSize.toSize(), mode, state);
result = icon.pixmap(size, mode, state);
}
// We disable the iconeffect here since we cannot get it into sync with
// the fade animation. TODO: Enable it when animations are switched off
if (!result.isNull() && useHoverEffect && !drawBg) {
KIconEffect *effect = KIconLoader::global()->iconEffect();
// Note that in KIconLoader terminology, active = hover.
// We're assuming that the icon group is desktop/filemanager, since this
// is KFileItemDelegate.
if (effect->hasEffect(KIconLoader::Desktop, KIconLoader::ActiveState)) {
result = effect->apply(result, KIconLoader::Desktop, KIconLoader::ActiveState);
}
}
return result;
}
QPointF Icon::Private::iconPosition(const QStyleOptionGraphicsItem *option, const QPixmap &pixmap) const
{
const QRectF itemRect = subtractMargin(option->rect, Private::ItemMargin);
// Compute the nominal decoration rectangle
const QSizeF size = addMargin(iconSize, Private::IconMargin);
Qt::LayoutDirection direction = iconDirection(option);
//alignment depends from orientation and option->direction
Qt::Alignment alignment;
if (text.isEmpty() && infoText.isEmpty()) {
alignment = Qt::AlignCenter;
}else if (orientation == Qt::Vertical) {
alignment = Qt::Alignment(Qt::AlignHCenter | Qt::AlignTop);
//Horizontal
}else{
alignment = QStyle::visualAlignment(direction, Qt::Alignment(Qt::AlignLeft | Qt::AlignVCenter));
}
const QRect iconRect = QStyle::alignedRect(direction, alignment, size.toSize(), itemRect.toRect());
// Position the pixmap in the center of the rectangle
QRect pixmapRect = pixmap.rect();
pixmapRect.moveCenter(iconRect.center());
// add a gimmicky margin of 5px to y, TEMP TEMP TEMP
// pixmapRect = pixmapRect.adjusted(0, 5, 0, 0);
return QPointF(pixmapRect.topLeft());
}
QRectF Icon::Private::labelRectangle(const QStyleOptionGraphicsItem *option, const QPixmap &icon,
const QString &string) const
{
Q_UNUSED(string)
if (icon.isNull()) {
return option->rect;
}
const QSizeF decoSize = addMargin(iconSize, Private::IconMargin);
const QRectF itemRect = subtractMargin(option->rect, Private::ItemMargin);
QRectF textArea(QPointF(0, 0), itemRect.size());
if (orientation == Qt::Vertical) {
textArea.setTop(decoSize.height() + 1);
} else {
//Horizontal
textArea.setLeft(decoSize.width() + 1);
}
textArea.translate(itemRect.topLeft());
return QRectF(QStyle::visualRect(iconDirection(option), option->rect, textArea.toRect()));
}
// Lays the text out in a rectangle no larger than constraints, eliding it as necessary
QSizeF Icon::Private::layoutText(QTextLayout &layout, const QStyleOptionGraphicsItem *option,
const QString &text, const QSizeF &constraints) const
{
const QSizeF size = layoutText(layout, text, constraints.width());
if (size.width() > constraints.width() || size.height() > constraints.height())
{
const QString elided = elidedText(layout, option, constraints);
return layoutText(layout, elided, constraints.width());
}
return size;
}
// Lays the text out in a rectangle no wider than maxWidth
QSizeF Icon::Private::layoutText(QTextLayout &layout, const QString &text, qreal maxWidth) const
{
QFontMetricsF metrics(layout.font());
qreal leading = metrics.leading();
qreal height = 0.0;
qreal widthUsed = 0.0;
QTextLine line;
layout.setText(text);
layout.beginLayout();
while ((line = layout.createLine()).isValid())
{
line.setLineWidth(maxWidth);
height += leading;
line.setPosition(QPointF(0.0, height));
height += line.height();
widthUsed = qMax(widthUsed, line.naturalTextWidth());
}
layout.endLayout();
return QSizeF(widthUsed, height);
}
// Elides the text in the layout, by iterating over each line in the layout, eliding
// or word breaking the line if it's wider than the max width, and finally adding an
// ellipses at the end of the last line, if there are more lines than will fit within
// the vertical size constraints.
QString Icon::Private::elidedText(QTextLayout &layout, const QStyleOptionGraphicsItem *option,
const QSizeF &size) const
{
Q_UNUSED(option)
QFontMetricsF metrics(layout.font());
const QString text = layout.text();
qreal maxWidth = size.width();
qreal maxHeight = size.height();
qreal height = 0;
// Elide each line that has already been laid out in the layout.
QString elided;
elided.reserve(text.length());
for (int i = 0; i < layout.lineCount(); i++)
{
QTextLine line = layout.lineAt(i);
int start = line.textStart();
int length = line.textLength();
height += metrics.leading();
if (height + line.height() + metrics.lineSpacing() > maxHeight)
{
// Unfortunately, if the line ends because of a line separator, elidedText() will be too
// clever and keep adding lines until it finds one that's too wide.
if (line.naturalTextWidth() < maxWidth && start+length > 0 && text[start + length - 1] == QChar::LineSeparator)
elided += text.mid(start, length - 1);
else
elided += metrics.elidedText(text.mid(start), Qt::ElideRight, maxWidth);
break;
}
else if (line.naturalTextWidth() > maxWidth)
elided += metrics.elidedText(text.mid(start, length), Qt::ElideRight, maxWidth);
else
elided += text.mid(start, length);
height += line.height();
}
return elided;
}
void Icon::Private::layoutTextItems(const QStyleOptionGraphicsItem *option,
const QPixmap &icon, QTextLayout *labelLayout,
QTextLayout *infoLayout, QRectF *textBoundingRect) const
{
bool showInformation = false;
setLayoutOptions(*labelLayout, option);
QFontMetricsF fm(labelLayout->font());
const QRectF textArea = labelRectangle(option, icon, text);
QRectF textRect = subtractMargin(textArea, Private::TextMargin);
//kDebug() << this << "text area" << textArea << "text rect" << textRect;
// Sizes and constraints for the different text parts
QSizeF maxLabelSize = textRect.size();
QSizeF maxInfoSize = textRect.size();
QSizeF labelSize;
QSizeF infoSize;
// If we have additional info text, and there's space for at least two lines of text,
// adjust the max label size to make room for at least one line of the info text
if (!infoText.isEmpty() && textRect.height() >= fm.lineSpacing() * 2)
{
infoLayout->setFont(labelLayout->font());
infoLayout->setTextOption(labelLayout->textOption());
maxLabelSize.rheight() -= fm.lineSpacing();
showInformation = true;
}
// Lay out the label text, and adjust the max info size based on the label size
labelSize = layoutText(*labelLayout, option, text, maxLabelSize);
maxInfoSize.rheight() -= labelSize.height();
// Lay out the info text
if (showInformation) {
infoSize = layoutText(*infoLayout, option, infoText, maxInfoSize);
} else {
infoSize = QSizeF(0, 0);
}
// Compute the bounding rect of the text
const Qt::Alignment alignment = labelLayout->textOption().alignment();
const QSizeF size(qMax(labelSize.width(), infoSize.width()), labelSize.height() + infoSize.height());
*textBoundingRect = QStyle::alignedRect(iconDirection(option), alignment, size.toSize(), textRect.toRect());
// Compute the positions where we should draw the layouts
labelLayout->setPosition(QPointF(textRect.x(), textBoundingRect->y()));
infoLayout->setPosition(QPointF(textRect.x(), textBoundingRect->y() + labelSize.height()));
//kDebug() << "final position is" << labelLayout->position();
}
QBrush Icon::Private::foregroundBrush(const QStyleOptionGraphicsItem *option) const
{
const QPalette::ColorGroup group = option->state & QStyle::State_Enabled ?
QPalette::Normal : QPalette::Disabled;
// Always use the highlight color for selected items
if (option->state & QStyle::State_Selected) {
return option->palette.brush(group, QPalette::HighlightedText);
}
return option->palette.brush(group, QPalette::Text);
}
QBrush Icon::Private::backgroundBrush(const QStyleOptionGraphicsItem *option) const
{
const QPalette::ColorGroup group = option->state & QStyle::State_Enabled ?
QPalette::Normal : QPalette::Disabled;
QBrush background(Qt::NoBrush);
// Always use the highlight color for selected items
if (option->state & QStyle::State_Selected) {
background = option->palette.brush(group, QPalette::Highlight);
}
return background;
}
void Icon::Private::drawTextItems(QPainter *painter, const QStyleOptionGraphicsItem *option,
const QTextLayout &labelLayout, const QTextLayout &infoLayout) const
{
Q_UNUSED(option)
painter->save();
painter->setPen(textColor);
// the translation prevents odd rounding errors in labelLayout.position()
// when applied to the canvas
painter->translate(0.5, 0.5);
labelLayout.draw(painter, QPointF());
if (!infoLayout.text().isEmpty()) {
painter->setPen(textColor);
infoLayout.draw(painter, QPointF());
}
painter->restore();
}
void Icon::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
Q_UNUSED(widget)
#ifdef BACKINGSTORE_BLUR_HACK
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->drawImage(0, 0, image);
}
}
#endif
//Lay out the main icon and action icons
layoutIcons(option);
// Compute the metrics, and lay out the text items
// ========================================================================
Private::IconState state = Private::NoState;
if (d->states & Private::ManualPressedState) {
state = Private::PressedState;
} else if (d->states & Private::PressedState) {
if (d->states & Private::HoverState) {
state = Private::PressedState;
}
} else if (d->states & Private::HoverState) {
state = Private::HoverState;
}
QPixmap icon = d->decoration(option, state != Private::NoState);
const QPointF iconPos = d->iconPosition(option, icon);
d->drawBackground(painter, state);
// draw icon
if (!icon.isNull()) {
painter->drawPixmap(iconPos, icon);
}
// Draw corner actions
foreach (const IconAction *action, d->cornerActions) {
if (action->animationId()) {
action->paint(painter);
}
}
// Draw text last because its overlayed
QTextLayout labelLayout, infoLayout;
QRectF textBoundingRect;
d->layoutTextItems(option, icon, &labelLayout, &infoLayout, &textBoundingRect);
d->drawTextItems(painter, option, labelLayout, infoLayout);
}
void Icon::drawActionButtonBase(QPainter* painter, const QSize &size, int element)
{
qreal radius = size.width()/2;
QRadialGradient gradient(radius, radius, radius, radius, radius);
int alpha;
if (element == Private::MinibuttonPressed) {
alpha = 255;
} else if (element == Private::MinibuttonHover) {
alpha = 200;
} else {
alpha = 160;
}
gradient.setColorAt(0, QColor::fromRgb(d->textColor.red(),
d->textColor.green(),
d->textColor.blue(), alpha));
gradient.setColorAt(1, QColor::fromRgb(d->textColor.red(),
d->textColor.green(),
d->textColor.blue(), 0));
painter->setBrush(gradient);
painter->setPen(Qt::NoPen);
painter->drawEllipse(QRectF(QPointF(.0, .0), size));
}
void Icon::setText(const QString& text)
{
d->text = text;
// cause a relayout
d->currentSize = QSizeF(-1, -1);
}
QString Icon::text() const
{
return d->text;
}
void Icon::setInfoText(const QString& text)
{
d->infoText = text;
// cause a relayout
d->currentSize = QSizeF(-1, -1);
}
QString Icon::infoText() const
{
return d->infoText;
}
QIcon Icon::icon() const
{
return d->icon;
}
void Icon::setIcon(const QString& icon)
{
if (icon.isEmpty()) {
setIcon(QIcon());
return;
}
setIcon(KIcon(icon));
}
void Icon::setIcon(const QIcon& icon)
{
d->icon = icon;
}
QSizeF Icon::iconSize() const
{
return d->iconSize;
}
bool Icon::isDown()
{
return d->states & Private::PressedState;
}
void Icon::mousePressEvent(QGraphicsSceneMouseEvent *event)
{
if (event->button() != Qt::LeftButton) {
QGraphicsWidget::mousePressEvent(event);
return;
}
d->states |= Private::PressedState;
d->clickStartPos = scenePos();
bool handled = false;
foreach (IconAction *action, d->cornerActions) {
handled = action->event(event->type(), event->pos());
if (handled) {
break;
}
}
if (!handled && geometry().contains(event->pos())) {
emit pressed(true);
}
update();
}
void Icon::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
{
if (~d->states & Private::PressedState) {
QGraphicsWidget::mouseMoveEvent(event);
return;
}
if (boundingRect().contains(event->pos())) {
if (~d->states & Private::HoverState) {
d->states |= Private::HoverState;
update();
}
} else {
if (d->states & Private::HoverState) {
d->states &= ~Private::HoverState;
update();
}
}
}
void Icon::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
{
if (~d->states & Private::PressedState) {
QGraphicsWidget::mouseMoveEvent(event);
return;
}
d->states &= ~Private::PressedState;
//don't pass click when the mouse was moved
bool handled = d->clickStartPos != scenePos();
if (!handled) {
foreach (IconAction *action, d->cornerActions) {
if (action->event(event->type(), event->pos())) {
handled = true;
break;
}
}
}
if (!handled) {
if (boundingRect().contains(event->pos())) {
emit clicked();
if (KGlobalSettings::singleClick()) {
emit activated();
}
}
emit pressed(false);
}
update();
}
void Icon::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event)
{
Q_UNUSED(event)
emit doubleClicked();
if (!KGlobalSettings::singleClick()) {
emit activated();
}
}
void Icon::hoverEnterEvent(QGraphicsSceneHoverEvent *event)
{
foreach (IconAction *action, d->cornerActions) {
action->show();
action->event(event->type(), event->pos());
}
hoverEffect(true);
update();
QGraphicsWidget::hoverEnterEvent(event);
}
void Icon::hoverLeaveEvent(QGraphicsSceneHoverEvent *event)
{
foreach (IconAction *action, d->cornerActions) {
action->hide();
action->event(event->type(), event->pos());
}
// d->states &= ~Private::HoverState; // Will be set once progress is zero again ...
hoverEffect(false);
update();
QGraphicsWidget::hoverLeaveEvent(event);
}
void Icon::setPressed(bool pressed)
{
if (pressed) {
d->states |= Private::ManualPressedState;
d->states |= Private::PressedState;
} else {
d->states &= ~Private::ManualPressedState;
d->states &= ~Private::PressedState;
}
update();
}
void Icon::setUnpressed()
{
setPressed(false);
}
void Icon::Private::syncToAction()
{
if (!action) {
return;
}
//we don't get told *what* changed, just that something changed
//so we update everything we care about
q->setIcon(action->icon());
q->setText(action->iconText());
q->setEnabled(action->isEnabled());
//TODO use action's tooltip too
emit q->changed();
}
void Icon::setOrientation(Qt::Orientation orientation)
{
d->orientation = orientation;
resize(sizeFromIconSize(d->iconSize.width()));
}
void Icon::invertLayout(bool invert)
{
d->invertLayout = invert;
}
bool Icon::invertedLayout() const
{
return d->invertLayout;
}
QSizeF Icon::sizeFromIconSize(const qreal iconWidth) const
{
if (d->text.isEmpty() && d->infoText.isEmpty()) {
//no text, less calculations
return d->addMargin(d->addMargin(QSizeF(iconWidth, iconWidth), Private::IconMargin),
Private::ItemMargin);
}
QFontMetricsF fm = Plasma::Theme::defaultTheme()->fontMetrics();
qreal width = 0;
if (d->orientation == Qt::Vertical) {
// make room for at most 14 characters
width = qMax(fm.width(d->text.left(12)),
fm.width(d->infoText.left(12))) +
fm.width("xx") +
d->horizontalMargin[Private::TextMargin].left +
d->horizontalMargin[Private::TextMargin].right;
width = qMax(width,
iconWidth +
d->horizontalMargin[Private::IconMargin].left +
d->horizontalMargin[Private::IconMargin].right);
} else {
width = iconWidth +
d->horizontalMargin[Private::IconMargin].left +
d->horizontalMargin[Private::IconMargin].right +
qMax(fm.width(d->text), fm.width(d->infoText)) + fm.width("xx") +
d->horizontalMargin[Private::TextMargin].left +
d->horizontalMargin[Private::TextMargin].right;
}
qreal height;
qreal textHeight;
QStyleOptionGraphicsItem option;
option.state = QStyle::State_None;
option.rect = boundingRect().toRect();
textHeight = d->displaySizeHint(&option, width).height();
if (d->orientation == Qt::Vertical) {
height = iconWidth + textHeight +
d->verticalMargin[Private::TextMargin].top +
d->verticalMargin[Private::TextMargin].bottom +
d->verticalMargin[Private::IconMargin].top +
d->verticalMargin[Private::IconMargin].bottom;
} else {
//Horizontal
height = qMax(iconWidth +
d->verticalMargin[Private::IconMargin].top +
d->verticalMargin[Private::IconMargin].bottom,
textHeight +
d->verticalMargin[Private::TextMargin].top +
d->verticalMargin[Private::TextMargin].bottom);
}
return d->addMargin(QSizeF(width, height), Private::ItemMargin);
}
} // namespace Plasma
#include "icon.moc"
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