diff options
Diffstat (limited to 'src/quickcontrolsimpl/qquickiconlabel.cpp')
| -rw-r--r-- | src/quickcontrolsimpl/qquickiconlabel.cpp | 614 |
1 files changed, 614 insertions, 0 deletions
diff --git a/src/quickcontrolsimpl/qquickiconlabel.cpp b/src/quickcontrolsimpl/qquickiconlabel.cpp new file mode 100644 index 0000000000..7d1561795b --- /dev/null +++ b/src/quickcontrolsimpl/qquickiconlabel.cpp @@ -0,0 +1,614 @@ +// Copyright (C) 2017 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only + +#include "qquickiconlabel_p.h" +#include "qquickiconlabel_p_p.h" +#include "qquickiconimage_p.h" +#include "qquickmnemoniclabel_p.h" + +#include <QtGui/private/qguiapplication_p.h> +#include <QtQuick/private/qquickitem_p.h> +#include <QtQuick/private/qquicktext_p.h> + +QT_BEGIN_NAMESPACE + +static void beginClass(QQuickItem *item) +{ + if (QQmlParserStatus *parserStatus = qobject_cast<QQmlParserStatus *>(item)) + parserStatus->classBegin(); +} + +static void completeComponent(QQuickItem *item) +{ + if (QQmlParserStatus *parserStatus = qobject_cast<QQmlParserStatus *>(item)) + parserStatus->componentComplete(); +} + +QQuickIconLabelPrivate::~QQuickIconLabelPrivate() = default; + +bool QQuickIconLabelPrivate::hasIcon() const +{ + return display != QQuickIconLabel::TextOnly && !icon.isEmpty(); +} + +bool QQuickIconLabelPrivate::hasText() const +{ + return display != QQuickIconLabel::IconOnly && !text.isEmpty(); +} + +bool QQuickIconLabelPrivate::createImage() +{ + Q_Q(QQuickIconLabel); + if (image) + return false; + + image = new QQuickIconImage(q); + watchChanges(image); + beginClass(image); + image->setObjectName(QStringLiteral("image")); + image->setName(icon.name()); + image->setSource(icon.resolvedSource()); + image->setSourceSize(QSize(icon.width(), icon.height())); + image->setColor(icon.color()); + image->setCache(icon.cache()); + QQmlEngine::setContextForObject(image, qmlContext(q)); + if (componentComplete) + completeComponent(image); + return true; +} + +bool QQuickIconLabelPrivate::destroyImage() +{ + if (!image) + return false; + + unwatchChanges(image); + delete image; + image = nullptr; + return true; +} + +bool QQuickIconLabelPrivate::updateImage() +{ + if (!hasIcon()) + return destroyImage(); + return createImage(); +} + +void QQuickIconLabelPrivate::syncImage() +{ + if (!image || icon.isEmpty()) + return; + + image->setName(icon.name()); + image->setSource(icon.resolvedSource()); + image->setSourceSize(QSize(icon.width(), icon.height())); + image->setColor(icon.color()); + image->setCache(icon.cache()); + const int valign = alignment & Qt::AlignVertical_Mask; + image->setVerticalAlignment(static_cast<QQuickImage::VAlignment>(valign)); + const int halign = alignment & Qt::AlignHorizontal_Mask; + image->setHorizontalAlignment(static_cast<QQuickImage::HAlignment>(halign)); +} + +void QQuickIconLabelPrivate::updateOrSyncImage() +{ + if (updateImage()) { + if (componentComplete) { + updateImplicitSize(); + layout(); + } + } else { + syncImage(); + } +} + +bool QQuickIconLabelPrivate::createLabel() +{ + Q_Q(QQuickIconLabel); + if (label) + return false; + + label = new QQuickMnemonicLabel(q); + watchChanges(label); + beginClass(label); + label->setObjectName(QStringLiteral("label")); + label->setFont(font); + label->setColor(color); + label->setElideMode(QQuickText::ElideRight); + const int valign = alignment & Qt::AlignVertical_Mask; + label->setVAlign(static_cast<QQuickText::VAlignment>(valign)); + const int halign = alignment & Qt::AlignHorizontal_Mask; + label->setHAlign(static_cast<QQuickText::HAlignment>(halign)); + label->setText(text); + if (componentComplete) + completeComponent(label); + return true; +} + +bool QQuickIconLabelPrivate::destroyLabel() +{ + if (!label) + return false; + + unwatchChanges(label); + delete label; + label = nullptr; + return true; +} + +bool QQuickIconLabelPrivate::updateLabel() +{ + if (!hasText()) + return destroyLabel(); + return createLabel(); +} + +void QQuickIconLabelPrivate::syncLabel() +{ + if (!label) + return; + + label->setText(text); +} + +void QQuickIconLabelPrivate::updateOrSyncLabel() +{ + if (updateLabel()) { + if (componentComplete) { + updateImplicitSize(); + layout(); + } + } else { + syncLabel(); + } +} + +void QQuickIconLabelPrivate::updateImplicitSize() +{ + Q_Q(QQuickIconLabel); + const bool showIcon = image && hasIcon(); + const bool showText = label && hasText(); + const qreal horizontalPadding = leftPadding + rightPadding; + const qreal verticalPadding = topPadding + bottomPadding; + const qreal iconImplicitWidth = showIcon ? image->implicitWidth() : 0; + const qreal iconImplicitHeight = showIcon ? image->implicitHeight() : 0; + const qreal textImplicitWidth = showText ? label->implicitWidth() : 0; + const qreal textImplicitHeight = showText ? label->implicitHeight() : 0; + const qreal effectiveSpacing = showText && showIcon && image->implicitWidth() > 0 ? spacing : 0; + const qreal implicitWidth = display == QQuickIconLabel::TextBesideIcon ? iconImplicitWidth + textImplicitWidth + effectiveSpacing + : qMax(iconImplicitWidth, textImplicitWidth); + const qreal implicitHeight = display == QQuickIconLabel::TextUnderIcon ? iconImplicitHeight + textImplicitHeight + effectiveSpacing + : qMax(iconImplicitHeight, textImplicitHeight); + q->setImplicitSize(implicitWidth + horizontalPadding, implicitHeight + verticalPadding); +} + +// adapted from QStyle::alignedRect() +static QRectF alignedRect(bool mirrored, Qt::Alignment alignment, const QSizeF &size, const QRectF &rectangle) +{ + alignment = QGuiApplicationPrivate::visualAlignment(mirrored ? Qt::RightToLeft : Qt::LeftToRight, alignment); + qreal x = rectangle.x(); + qreal y = rectangle.y(); + const qreal w = size.width(); + const qreal h = size.height(); + if ((alignment & Qt::AlignVCenter) == Qt::AlignVCenter) + y += rectangle.height() / 2 - h / 2; + else if ((alignment & Qt::AlignBottom) == Qt::AlignBottom) + y += rectangle.height() - h; + if ((alignment & Qt::AlignRight) == Qt::AlignRight) + x += rectangle.width() - w; + else if ((alignment & Qt::AlignHCenter) == Qt::AlignHCenter) + x += rectangle.width() / 2 - w / 2; + return QRectF(x, y, w, h); +} + +void QQuickIconLabelPrivate::layout() +{ + Q_Q(QQuickIconLabel); + if (!componentComplete) + return; + + const qreal availableWidth = width - leftPadding - rightPadding; + const qreal availableHeight = height - topPadding - bottomPadding; + + switch (display) { + case QQuickIconLabel::IconOnly: + if (image) { + const QRectF iconRect = alignedRect(mirrored, alignment, + QSizeF(qMin(image->implicitWidth(), availableWidth), + qMin(image->implicitHeight(), availableHeight)), + QRectF(leftPadding, topPadding, availableWidth, availableHeight)); + image->setSize(iconRect.size()); + image->setPosition(iconRect.topLeft()); + } + break; + case QQuickIconLabel::TextOnly: + if (label) { + const QRectF textRect = alignedRect(mirrored, alignment, + QSizeF(qMin(label->implicitWidth(), availableWidth), + qMin(label->implicitHeight(), availableHeight)), + QRectF(leftPadding, topPadding, availableWidth, availableHeight)); + label->setSize(textRect.size()); + label->setPosition(textRect.topLeft()); + } + break; + + case QQuickIconLabel::TextUnderIcon: { + // Work out the sizes first, as the positions depend on them. + QSizeF iconSize; + QSizeF textSize; + if (image) { + iconSize.setWidth(qMin(image->implicitWidth(), availableWidth)); + iconSize.setHeight(qMin(image->implicitHeight(), availableHeight)); + } + qreal effectiveSpacing = 0; + if (label) { + if (!iconSize.isEmpty()) + effectiveSpacing = spacing; + textSize.setWidth(qMin(label->implicitWidth(), availableWidth)); + textSize.setHeight(qMin(label->implicitHeight(), availableHeight - iconSize.height() - effectiveSpacing)); + } + + QRectF combinedRect = alignedRect(mirrored, alignment, + QSizeF(qMax(iconSize.width(), textSize.width()), + iconSize.height() + effectiveSpacing + textSize.height()), + QRectF(leftPadding, topPadding, availableWidth, availableHeight)); + if (image) { + QRectF iconRect = alignedRect(mirrored, Qt::AlignHCenter | Qt::AlignTop, iconSize, combinedRect); + image->setSize(iconRect.size()); + image->setPosition(iconRect.topLeft()); + } + if (label) { + QRectF textRect = alignedRect(mirrored, Qt::AlignHCenter | Qt::AlignBottom, textSize, combinedRect); + label->setSize(textRect.size()); + label->setPosition(textRect.topLeft()); + } + break; + } + + case QQuickIconLabel::TextBesideIcon: + default: + // Work out the sizes first, as the positions depend on them. + QSizeF iconSize(0, 0); + QSizeF textSize(0, 0); + if (image) { + iconSize.setWidth(qMin(image->implicitWidth(), availableWidth)); + iconSize.setHeight(qMin(image->implicitHeight(), availableHeight)); + } + qreal effectiveSpacing = 0; + if (label) { + if (!iconSize.isEmpty()) + effectiveSpacing = spacing; + textSize.setWidth(qMin(label->implicitWidth(), availableWidth - iconSize.width() - effectiveSpacing)); + textSize.setHeight(qMin(label->implicitHeight(), availableHeight)); + } + + const QRectF combinedRect = alignedRect(mirrored, alignment, + QSizeF(iconSize.width() + effectiveSpacing + textSize.width(), + qMax(iconSize.height(), textSize.height())), + QRectF(leftPadding, topPadding, availableWidth, availableHeight)); + if (image) { + const QRectF iconRect = alignedRect(mirrored, Qt::AlignLeft | Qt::AlignVCenter, iconSize, combinedRect); + image->setSize(iconRect.size()); + image->setPosition(iconRect.topLeft()); + } + if (label) { + const QRectF textRect = alignedRect(mirrored, Qt::AlignRight | Qt::AlignVCenter, textSize, combinedRect); + label->setSize(textRect.size()); + label->setPosition(textRect.topLeft()); + } + break; + } + + q->setBaselineOffset(label ? label->y() + label->baselineOffset() : 0); +} + +static const QQuickItemPrivate::ChangeTypes itemChangeTypes = + QQuickItemPrivate::ImplicitWidth + | QQuickItemPrivate::ImplicitHeight + | QQuickItemPrivate::Destroyed; + +void QQuickIconLabelPrivate::watchChanges(QQuickItem *item) +{ + QQuickItemPrivate *itemPrivate = QQuickItemPrivate::get(item); + itemPrivate->addItemChangeListener(this, itemChangeTypes); +} + +void QQuickIconLabelPrivate::unwatchChanges(QQuickItem* item) +{ + QQuickItemPrivate *itemPrivate = QQuickItemPrivate::get(item); + itemPrivate->removeItemChangeListener(this, itemChangeTypes); +} + +void QQuickIconLabelPrivate::itemImplicitWidthChanged(QQuickItem *) +{ + updateImplicitSize(); + layout(); +} + +void QQuickIconLabelPrivate::itemImplicitHeightChanged(QQuickItem *) +{ + updateImplicitSize(); + layout(); +} + +void QQuickIconLabelPrivate::itemDestroyed(QQuickItem *item) +{ + unwatchChanges(item); + if (item == image) + image = nullptr; + else if (item == label) + label = nullptr; +} + +QQuickIconLabel::QQuickIconLabel(QQuickItem *parent) + : QQuickItem(*(new QQuickIconLabelPrivate), parent) +{ +} + +QQuickIconLabel::~QQuickIconLabel() +{ + Q_D(QQuickIconLabel); + if (d->image) + d->unwatchChanges(d->image); + if (d->label) + d->unwatchChanges(d->label); +} + +QQuickIcon QQuickIconLabel::icon() const +{ + Q_D(const QQuickIconLabel); + return d->icon; +} + +void QQuickIconLabel::setIcon(const QQuickIcon &icon) +{ + Q_D(QQuickIconLabel); + if (d->icon == icon) + return; + + d->icon = icon; + d->icon.ensureRelativeSourceResolved(this); + d->updateOrSyncImage(); +} + +QString QQuickIconLabel::text() const +{ + Q_D(const QQuickIconLabel); + return d->text; +} + +void QQuickIconLabel::setText(const QString &text) +{ + Q_D(QQuickIconLabel); + if (d->text == text) + return; + + d->text = text; + d->updateOrSyncLabel(); +} + +QFont QQuickIconLabel::font() const +{ + Q_D(const QQuickIconLabel); + return d->font; +} + +void QQuickIconLabel::setFont(const QFont &font) +{ + Q_D(QQuickIconLabel); + if (d->font == font) + return; + + d->font = font; + if (d->label) + d->label->setFont(font); +} + +QColor QQuickIconLabel::color() const +{ + Q_D(const QQuickIconLabel); + return d->color; +} + +void QQuickIconLabel::setColor(const QColor &color) +{ + Q_D(QQuickIconLabel); + if (d->color == color) + return; + + d->color = color; + if (d->label) + d->label->setColor(color); +} + +QQuickIconLabel::Display QQuickIconLabel::display() const +{ + Q_D(const QQuickIconLabel); + return d->display; +} + +void QQuickIconLabel::setDisplay(Display display) +{ + Q_D(QQuickIconLabel); + if (d->display == display) + return; + + d->display = display; + d->updateImage(); + d->updateLabel(); + d->updateImplicitSize(); + d->layout(); +} + +qreal QQuickIconLabel::spacing() const +{ + Q_D(const QQuickIconLabel); + return d->spacing; +} + +void QQuickIconLabel::setSpacing(qreal spacing) +{ + Q_D(QQuickIconLabel); + if (qFuzzyCompare(d->spacing, spacing)) + return; + + d->spacing = spacing; + if (d->image && d->label) { + d->updateImplicitSize(); + d->layout(); + } +} + +bool QQuickIconLabel::isMirrored() const +{ + Q_D(const QQuickIconLabel); + return d->mirrored; +} + +void QQuickIconLabel::setMirrored(bool mirrored) +{ + Q_D(QQuickIconLabel); + if (d->mirrored == mirrored) + return; + + d->mirrored = mirrored; + d->layout(); +} + +Qt::Alignment QQuickIconLabel::alignment() const +{ + Q_D(const QQuickIconLabel); + return d->alignment; +} + +void QQuickIconLabel::setAlignment(Qt::Alignment alignment) +{ + Q_D(QQuickIconLabel); + const int valign = alignment & Qt::AlignVertical_Mask; + const int halign = alignment & Qt::AlignHorizontal_Mask; + const uint align = (valign ? valign : Qt::AlignVCenter) | (halign ? halign : Qt::AlignHCenter); + if (d->alignment == align) + return; + + d->alignment = static_cast<Qt::Alignment>(align); + if (d->label) { + d->label->setVAlign(static_cast<QQuickText::VAlignment>(valign)); + d->label->setHAlign(static_cast<QQuickText::HAlignment>(halign)); + } + if (d->image) { + d->image->setVerticalAlignment(static_cast<QQuickImage::VAlignment>(valign)); + d->image->setHorizontalAlignment(static_cast<QQuickImage::HAlignment>(halign)); + } + d->layout(); +} + +qreal QQuickIconLabel::topPadding() const +{ + Q_D(const QQuickIconLabel); + return d->topPadding; +} + +void QQuickIconLabel::setTopPadding(qreal padding) +{ + Q_D(QQuickIconLabel); + if (qFuzzyCompare(d->topPadding, padding)) + return; + + d->topPadding = padding; + d->updateImplicitSize(); + d->layout(); +} + +void QQuickIconLabel::resetTopPadding() +{ + setTopPadding(0); +} + +qreal QQuickIconLabel::leftPadding() const +{ + Q_D(const QQuickIconLabel); + return d->leftPadding; +} + +void QQuickIconLabel::setLeftPadding(qreal padding) +{ + Q_D(QQuickIconLabel); + if (qFuzzyCompare(d->leftPadding, padding)) + return; + + d->leftPadding = padding; + d->updateImplicitSize(); + d->layout(); +} + +void QQuickIconLabel::resetLeftPadding() +{ + setLeftPadding(0); +} + +qreal QQuickIconLabel::rightPadding() const +{ + Q_D(const QQuickIconLabel); + return d->rightPadding; +} + +void QQuickIconLabel::setRightPadding(qreal padding) +{ + Q_D(QQuickIconLabel); + if (qFuzzyCompare(d->rightPadding, padding)) + return; + + d->rightPadding = padding; + d->updateImplicitSize(); + d->layout(); +} + +void QQuickIconLabel::resetRightPadding() +{ + setRightPadding(0); +} + +qreal QQuickIconLabel::bottomPadding() const +{ + Q_D(const QQuickIconLabel); + return d->bottomPadding; +} + +void QQuickIconLabel::setBottomPadding(qreal padding) +{ + Q_D(QQuickIconLabel); + if (qFuzzyCompare(d->bottomPadding, padding)) + return; + + d->bottomPadding = padding; + d->updateImplicitSize(); + d->layout(); +} + +void QQuickIconLabel::resetBottomPadding() +{ + setBottomPadding(0); +} + +void QQuickIconLabel::componentComplete() +{ + Q_D(QQuickIconLabel); + if (d->image) + completeComponent(d->image); + if (d->label) + completeComponent(d->label); + QQuickItem::componentComplete(); + d->layout(); +} + +void QQuickIconLabel::geometryChange(const QRectF &newGeometry, const QRectF &oldGeometry) +{ + Q_D(QQuickIconLabel); + QQuickItem::geometryChange(newGeometry, oldGeometry); + d->layout(); +} + +QT_END_NAMESPACE + +#include "moc_qquickiconlabel_p.cpp" |