forked from qt-creator/qt-creator
Moved CrumblePath to Utils
This widget has little to do with the QML debugging library, and will be reused inside the QML JS Inspector UI as well.
This commit is contained in:
Lasse Holmstedt
251
src/libs/utils/crumblepath.cpp
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251
src/libs/utils/crumblepath.cpp
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/**************************************************************************
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**
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** This file is part of Qt Creator
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**
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** Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
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**
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** Commercial Usage
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**
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt Commercial License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Nokia.
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**
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** GNU Lesser General Public License Usage
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**
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** If you are unsure which license is appropriate for your use, please
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** contact the sales department at http://qt.nokia.com/contact.
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**
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**************************************************************************/
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#include "crumblepath.h"
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#include <QHBoxLayout>
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#include <QPushButton>
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#include <QStyle>
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#include <QResizeEvent>
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namespace Utils {
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static const int ArrowBorderSize = 12;
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class CrumblePathButton : public QPushButton
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{
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public:
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enum SegmentType {
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LastSegment = 1,
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MiddleSegment = 2,
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FirstSegment = 4
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};
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explicit CrumblePathButton(const QString &title, QWidget *parent = 0);
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void setSegmentType(int type);
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private:
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static QString middleSegmentSheet(bool useLeftPadding);
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static QString lastSegmentSheet(bool useLeftPadding);
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};
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CrumblePathButton::CrumblePathButton(const QString &title, QWidget *parent)
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: QPushButton(title, parent)
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{
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setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::Fixed);
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setToolTip(title);
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setMinimumHeight(24);
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setMaximumHeight(24);
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setStyleSheet(lastSegmentSheet(true));
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}
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QString CrumblePathButton::middleSegmentSheet(bool useLeftPadding)
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{
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QString sheet = QString(
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"QPushButton {"
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"text-align: left;"
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"color: #eeeeee;"
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"border-image: url(:/qml/images/segment.png) 0 12 0 2;"
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"border-width: 0 12px 0 2px;"
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"padding-left:%1px;"
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"}"
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"QPushButton:hover {"
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" border-image: url(:/qml/images/segment-hover.png) 0 12 0 2;"
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"}"
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"QPushButton:pressed {"
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" border-image: url(:/qml/images/segment-selected.png) 0 12 0 2;"
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"}"
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).arg(useLeftPadding ? "18" : "4");
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return sheet;
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}
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QString CrumblePathButton::lastSegmentSheet(bool useLeftPadding)
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{
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QString sheet = QString(
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"QPushButton {"
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"text-align: left;"
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"color: #eeeeee;"
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"border-image: url(:/qml/images/segment-end.png) 0 2 0 2;"
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"border-width: 0 2px 0 2px;"
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"padding-left:%1px;"
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"}"
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"QPushButton:hover {"
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" border-image: url(:/qml/images/segment-hover-end.png) 0 2 0 2;"
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"}"
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"QPushButton:pressed {"
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" border-image: url(:/qml/images/segment-selected-end.png) 0 2 0 2;"
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"}"
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).arg(useLeftPadding ? "18" : "4");
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return sheet;
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}
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void CrumblePathButton::setSegmentType(int type)
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{
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bool useLeftPadding = !(type & FirstSegment);
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if (type & LastSegment) {
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setStyleSheet(lastSegmentSheet(useLeftPadding));
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} else if (type & MiddleSegment) {
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setStyleSheet(middleSegmentSheet(useLeftPadding));
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}
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}
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//
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// CrumblePath
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//
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CrumblePath::CrumblePath(QWidget *parent) :
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QWidget(parent), m_background(new QWidget(this))
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{
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setMinimumHeight(25);
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setMaximumHeight(25);
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setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::Minimum);
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m_background->setStyleSheet("QWidget { background-color:#2d2d2d;}");
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m_background->setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::Preferred);
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}
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CrumblePath::~CrumblePath()
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{
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qDeleteAll(m_buttons);
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m_buttons.clear();
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}
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void CrumblePath::pushElement(const QString &title)
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{
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CrumblePathButton *newButton = new CrumblePathButton(title, this);
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newButton->hide();
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connect(newButton, SIGNAL(clicked()), SLOT(mapClickToIndex()));
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connect(newButton, SIGNAL(customContextMenuRequested(QPoint)), SLOT(mapContextMenuRequestToIndex()));
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int segType = CrumblePathButton::MiddleSegment;
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if (!m_buttons.isEmpty()) {
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if (m_buttons.length() == 1)
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segType = segType | CrumblePathButton::FirstSegment;
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m_buttons.last()->setSegmentType(segType);
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} else {
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segType = CrumblePathButton::FirstSegment | CrumblePathButton::LastSegment;
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newButton->setSegmentType(segType);
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}
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m_buttons.append(newButton);
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resizeButtons();
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}
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void CrumblePath::popElement()
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{
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QWidget *last = m_buttons.last();
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m_buttons.removeLast();
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last->setParent(0);
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last->deleteLater();
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int segType = CrumblePathButton::MiddleSegment | CrumblePathButton::LastSegment;
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if (!m_buttons.isEmpty()) {
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if (m_buttons.length() == 1)
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segType = CrumblePathButton::FirstSegment | CrumblePathButton::LastSegment;
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m_buttons.last()->setSegmentType(segType);
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}
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resizeButtons();
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}
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void CrumblePath::clear()
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{
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while (!m_buttons.isEmpty()) {
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popElement();
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}
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}
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void CrumblePath::resizeEvent(QResizeEvent *)
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{
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resizeButtons();
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}
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void CrumblePath::resizeButtons()
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{
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int buttonMinWidth = 0;
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int buttonMaxWidth = 0;
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int totalWidthLeft = width();
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if (m_buttons.length() >= 1) {
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QPoint nextElementPosition(0,0);
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m_buttons[0]->raise();
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// rearrange all items so that the first item is on top (added last).
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for(int i = 0; i < m_buttons.length() ; ++i) {
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CrumblePathButton *button = m_buttons[i];
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QFontMetrics fm(button->font());
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buttonMinWidth = ArrowBorderSize + fm.width(button->text()) + ArrowBorderSize * 2 ;
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buttonMaxWidth = (totalWidthLeft + ArrowBorderSize * (m_buttons.length() - i)) / (m_buttons.length() - i);
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if (buttonMinWidth > buttonMaxWidth && i < m_buttons.length() - 1) {
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buttonMinWidth = buttonMaxWidth;
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} else if (i > 3 && (i == m_buttons.length() - 1)) {
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buttonMinWidth = width() - nextElementPosition.x();
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buttonMaxWidth = buttonMinWidth;
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}
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button->setMinimumWidth(buttonMinWidth);
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button->setMaximumWidth(buttonMaxWidth);
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button->move(nextElementPosition);
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nextElementPosition.rx() += button->width() - ArrowBorderSize;
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totalWidthLeft -= button->width();
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button->show();
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if (i > 0)
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button->stackUnder(m_buttons[i - 1]);
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}
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}
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m_background->setGeometry(0,0, width(), height());
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m_background->update();
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}
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void CrumblePath::mapClickToIndex()
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{
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QObject *element = sender();
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for (int i = 0; i < m_buttons.length(); ++i) {
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if (m_buttons[i] == element) {
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emit elementClicked(i);
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return;
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}
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}
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}
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void CrumblePath::mapContextMenuRequestToIndex()
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{
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QObject *element = sender();
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for (int i = 0; i < m_buttons.length(); ++i) {
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if (m_buttons[i] == element) {
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emit elementContextMenuRequested(i);
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return;
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}
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}
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}
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} // namespace QmlViewer
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