395 lines
13 KiB
C++
395 lines
13 KiB
C++
/*
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* Copyright 2014 Martin Gräßlin <mgraesslin@kde.org>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License or (at your option) version 3 or any later version
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* accepted by the membership of KDE e.V. (or its successor approved
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* by the membership of KDE e.V.), which shall act as a proxy
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* defined in Section 14 of version 3 of the license.
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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 General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "previewitem.h"
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#include "previewbridge.h"
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#include "previewsettings.h"
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#include "previewclient.h"
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#include <KDecoration2/Decoration>
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#include <KDecoration2/DecorationSettings>
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#include <KDecoration2/DecorationShadow>
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#include <KDecoration2/DecoratedClient>
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#include <QCursor>
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#include <QPainter>
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#include <QQmlContext>
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#include <QQmlEngine>
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#include <QDebug>
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namespace KDecoration2
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{
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namespace Preview
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{
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PreviewItem::PreviewItem(QQuickItem *parent)
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: QQuickPaintedItem(parent)
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, m_decoration(nullptr)
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, m_windowColor(QPalette().background().color())
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{
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setAcceptHoverEvents(true);
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setFiltersChildMouseEvents(true);
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setAcceptedMouseButtons(Qt::MouseButtons(~Qt::NoButton));
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connect(this, &PreviewItem::widthChanged, this, &PreviewItem::syncSize);
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connect(this, &PreviewItem::heightChanged, this, &PreviewItem::syncSize);
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connect(this, &PreviewItem::bridgeChanged, this, &PreviewItem::createDecoration);
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connect(this, &PreviewItem::settingsChanged, this, &PreviewItem::createDecoration);
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}
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PreviewItem::~PreviewItem()
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{
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m_decoration->deleteLater();
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if (m_bridge){
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m_bridge->unregisterPreviewItem(this);
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}
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}
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void PreviewItem::componentComplete()
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{
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QQuickPaintedItem::componentComplete();
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createDecoration();
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if (m_decoration) {
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m_decoration->setSettings(m_settings->settings());
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m_decoration->init();
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syncSize();
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}
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}
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void PreviewItem::createDecoration()
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{
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if (m_bridge.isNull() || m_settings.isNull() || m_decoration) {
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return;
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}
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m_decoration = m_bridge->createDecoration(0);
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if (!m_decoration) {
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return;
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}
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m_decoration->setProperty("visualParent", QVariant::fromValue(this));
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m_client = m_bridge->lastCreatedClient();
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connect(m_decoration, &Decoration::bordersChanged, this, &PreviewItem::syncSize);
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connect(m_decoration, &Decoration::shadowChanged, this, &PreviewItem::syncSize);
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emit decorationChanged(m_decoration);
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}
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Decoration *PreviewItem::decoration() const
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{
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return m_decoration;
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}
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void PreviewItem::setDecoration(Decoration *deco)
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{
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if (m_decoration == deco) {
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return;
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}
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auto updateSlot = static_cast<void (QQuickItem::*)()>(&QQuickItem::update);
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if (m_decoration) {
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disconnect(m_decoration, &Decoration::bordersChanged, this, updateSlot);
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}
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m_decoration = deco;
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m_decoration->setProperty("visualParent", QVariant::fromValue(this));
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connect(m_decoration, &Decoration::bordersChanged, this, updateSlot);
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connect(m_decoration, &Decoration::sectionUnderMouseChanged, this,
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[this](Qt::WindowFrameSection section) {
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switch (section) {
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case Qt::TopRightSection:
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case Qt::BottomLeftSection:
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setCursor(Qt::SizeBDiagCursor);
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return;
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case Qt::TopLeftSection:
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case Qt::BottomRightSection:
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setCursor(Qt::SizeFDiagCursor);
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return;
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case Qt::TopSection:
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case Qt::BottomSection:
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setCursor(Qt::SizeVerCursor);
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return;
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case Qt::LeftSection:
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case Qt::RightSection:
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setCursor(Qt::SizeHorCursor);
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return;
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default:
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setCursor(Qt::ArrowCursor);
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}
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}
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);
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connect(m_decoration, &KDecoration2::Decoration::shadowChanged, this, &PreviewItem::shadowChanged);
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emit decorationChanged(m_decoration);
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}
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QColor PreviewItem::windowColor() const
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{
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return m_windowColor;
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}
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void PreviewItem::setWindowColor(const QColor &color)
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{
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if (m_windowColor == color) {
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return;
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}
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m_windowColor = color;
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emit windowColorChanged(m_windowColor);
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update();
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}
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void PreviewItem::paint(QPainter *painter)
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{
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if (!m_decoration) {
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return;
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}
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int paddingLeft = 0;
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int paddingTop = 0;
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int paddingRight = 0;
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int paddingBottom = 0;
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paintShadow(painter, paddingLeft, paddingRight, paddingTop, paddingBottom);
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m_decoration->paint(painter, QRect(0, 0, width(), height()));
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if (m_drawBackground) {
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painter->fillRect(m_decoration->borderLeft(), m_decoration->borderTop(),
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width() - m_decoration->borderLeft() - m_decoration->borderRight() - paddingLeft - paddingRight,
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height() - m_decoration->borderTop() - m_decoration->borderBottom() - paddingTop - paddingBottom,
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m_windowColor);
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}
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}
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void PreviewItem::paintShadow(QPainter *painter, int &paddingLeft, int &paddingRight, int &paddingTop, int &paddingBottom)
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{
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const auto &shadow = ((const Decoration*)(m_decoration))->shadow();
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if (!shadow) {
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return;
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}
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paddingLeft = shadow->paddingLeft();
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paddingTop = shadow->paddingTop();
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paddingRight = shadow->paddingRight();
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paddingBottom = shadow->paddingBottom();
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const QImage img = shadow->shadow();
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if (img.isNull()) {
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return;
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}
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const QRect &topLeft = shadow->topLeftGeometry();
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const QRect &top = shadow->topGeometry();
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const QRect &topRight = shadow->topRightGeometry();
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const QRect &right = shadow->rightGeometry();
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const QRect &left = shadow->leftGeometry();
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const QRect &bottomLeft = shadow->bottomLeftGeometry();
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const QRect &bottom = shadow->bottomGeometry();
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const QRect &bottomRight = shadow->bottomRightGeometry();
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painter->translate(paddingLeft, paddingTop);
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// top left
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painter->drawImage(QPoint(-paddingLeft, -paddingTop), img, topLeft);
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// top
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painter->drawImage(QRect(-paddingLeft + topLeft.width(), -paddingTop, width() - topLeft.width() - topRight.width(), top.height()), img, top);
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// top right
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painter->drawImage(QPoint(width() - topRight.width() - paddingLeft, -paddingTop), img, topRight);
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// right
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painter->drawImage(QRect(width() - right.width() - paddingLeft, -paddingTop + topRight.height(), right.width(), height() - topRight.height() - bottomRight.height()), img, right);
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// bottom right
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painter->drawImage(QPoint(width() - paddingLeft - bottomRight.width(), height() - paddingTop - bottomRight.height()), img, bottomRight);
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// bottom
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painter->drawImage(QRect(-paddingLeft + bottomLeft.width(), height() - bottom.height() - paddingTop, width() - bottomLeft.width() - bottomRight.width(), bottom.height()), img, bottom);
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// bottom left
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painter->drawImage(QPoint(-paddingLeft, height() - bottomLeft.height() - paddingTop), img, bottomLeft);
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// left
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painter->drawImage(QRect(-paddingLeft, -paddingTop + topLeft.height(), left.width(), height() - topLeft.height() - bottomLeft.height()), img, left);
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}
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void PreviewItem::mouseDoubleClickEvent(QMouseEvent *event)
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{
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const auto &shadow = m_decoration->shadow();
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if (shadow) {
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QMouseEvent e(event->type(),
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event->localPos() - QPointF(shadow->paddingLeft(), shadow->paddingTop()),
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event->button(),
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event->buttons(),
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event->modifiers());
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QCoreApplication::instance()->sendEvent(decoration(), &e);
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} else {
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QCoreApplication::instance()->sendEvent(decoration(), event);
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}
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}
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void PreviewItem::mousePressEvent(QMouseEvent *event)
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{
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const auto &shadow = m_decoration->shadow();
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if (shadow) {
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QMouseEvent e(event->type(),
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event->localPos() - QPointF(shadow->paddingLeft(), shadow->paddingTop()),
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event->button(),
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event->buttons(),
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event->modifiers());
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QCoreApplication::instance()->sendEvent(decoration(), &e);
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} else {
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QCoreApplication::instance()->sendEvent(decoration(), event);
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}
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}
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void PreviewItem::mouseReleaseEvent(QMouseEvent *event)
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{
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const auto &shadow = m_decoration->shadow();
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if (shadow) {
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QMouseEvent e(event->type(),
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event->localPos() - QPointF(shadow->paddingLeft(), shadow->paddingTop()),
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event->button(),
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event->buttons(),
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event->modifiers());
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QCoreApplication::instance()->sendEvent(decoration(), &e);
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} else {
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QCoreApplication::instance()->sendEvent(decoration(), event);
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}
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}
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void PreviewItem::mouseMoveEvent(QMouseEvent *event)
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{
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const auto &shadow = m_decoration->shadow();
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if (shadow) {
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QMouseEvent e(event->type(),
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event->localPos() - QPointF(shadow->paddingLeft(), shadow->paddingTop()),
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event->button(),
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event->buttons(),
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event->modifiers());
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QCoreApplication::instance()->sendEvent(decoration(), &e);
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} else {
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QCoreApplication::instance()->sendEvent(decoration(), event);
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}
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}
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void PreviewItem::hoverEnterEvent(QHoverEvent *event)
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{
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const auto &shadow = m_decoration->shadow();
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if (shadow) {
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QHoverEvent e(event->type(),
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event->posF() - QPointF(shadow->paddingLeft(), shadow->paddingTop()),
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event->oldPosF() - QPointF(shadow->paddingLeft(), shadow->paddingTop()),
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event->modifiers());
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QCoreApplication::instance()->sendEvent(decoration(), &e);
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} else {
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QCoreApplication::instance()->sendEvent(decoration(), event);
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}
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}
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void PreviewItem::hoverLeaveEvent(QHoverEvent *event)
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{
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const auto &shadow = m_decoration->shadow();
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if (shadow) {
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QHoverEvent e(event->type(),
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event->posF() - QPointF(shadow->paddingLeft(), shadow->paddingTop()),
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event->oldPosF() - QPointF(shadow->paddingLeft(), shadow->paddingTop()),
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event->modifiers());
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QCoreApplication::instance()->sendEvent(decoration(), &e);
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} else {
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QCoreApplication::instance()->sendEvent(decoration(), event);
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}
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}
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void PreviewItem::hoverMoveEvent(QHoverEvent *event)
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{
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const auto &shadow = m_decoration->shadow();
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if (shadow) {
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QHoverEvent e(event->type(),
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event->posF() - QPointF(shadow->paddingLeft(), shadow->paddingTop()),
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event->oldPosF() - QPointF(shadow->paddingLeft(), shadow->paddingTop()),
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event->modifiers());
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QCoreApplication::instance()->sendEvent(decoration(), &e);
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} else {
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QCoreApplication::instance()->sendEvent(decoration(), event);
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}
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}
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bool PreviewItem::isDrawingBackground() const
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{
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return m_drawBackground;
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}
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void PreviewItem::setDrawingBackground(bool set)
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{
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if (m_drawBackground == set) {
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return;
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}
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m_drawBackground = set;
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emit drawingBackgroundChanged(set);
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}
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PreviewBridge *PreviewItem::bridge() const
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{
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return m_bridge.data();
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}
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void PreviewItem::setBridge(PreviewBridge *bridge)
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{
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if (m_bridge == bridge) {
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return;
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}
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if (m_bridge) {
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m_bridge->unregisterPreviewItem(this);
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}
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m_bridge = bridge;
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if (m_bridge) {
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m_bridge->registerPreviewItem(this);
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}
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emit bridgeChanged();
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}
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Settings *PreviewItem::settings() const
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{
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return m_settings.data();
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}
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void PreviewItem::setSettings(Settings *settings)
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{
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if (m_settings == settings) {
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return;
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}
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m_settings = settings;
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emit settingsChanged();
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}
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PreviewClient *PreviewItem::client()
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{
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return m_client.data();
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}
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void PreviewItem::syncSize()
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{
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if (!m_client) {
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return;
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}
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int widthOffset = 0;
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int heightOffset = 0;
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auto shadow = m_decoration->shadow();
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if (shadow) {
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widthOffset = shadow->paddingLeft() + shadow->paddingRight();
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heightOffset = shadow->paddingTop() + shadow->paddingBottom();
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}
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m_client->setWidth(width() - m_decoration->borderLeft() - m_decoration->borderRight() - widthOffset);
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m_client->setHeight(height() - m_decoration->borderTop() - m_decoration->borderBottom() - heightOffset);
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}
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DecorationShadow *PreviewItem::shadow() const
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{
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if (!m_decoration) {
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return nullptr;
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}
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const auto &s = m_decoration->shadow();
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if (!s) {
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return nullptr;
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}
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return s.data();
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}
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}
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}
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