Files
qt-creator/src/libs/qmleditorwidgets/contextpanewidgetimage.cpp
Thomas Hartmann 9061ef2d7a QtQuickToolBar: tooltip fix
Task-number: QTCREATORBUG-2620
2011-03-17 10:44:29 +01:00

1008 lines
35 KiB
C++

/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** No Commercial Usage
**
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
**
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**************************************************************************/
#include "contextpanewidgetimage.h"
#include "ui_contextpanewidgetimage.h"
#include "ui_contextpanewidgetborderimage.h"
#include <qmljs/qmljspropertyreader.h>
#include <QtCore/QFile>
#include <QtCore/QFileInfo>
#include <QtCore/QDir>
#include <QtGui/QPixmap>
#include <QtGui/QPainter>
#include <QtGui/QGraphicsEffect>
#include <QtGui/QMouseEvent>
#include <QtGui/QScrollArea>
#include <QtGui/QSlider>
#include <QtGui/QToolButton>
#include <QtCore/QDebug>
namespace QmlEditorWidgets {
bool LabelFilter::eventFilter(QObject *obj, QEvent *event)
{
if (event->type() == QEvent::MouseButtonDblClick) {
emit doubleClicked();
event->accept();
return true;
}
return QObject::eventFilter(obj, event);
}
bool WheelFilter::eventFilter(QObject *obj, QEvent *event)
{
if (event->type() == QEvent::Wheel) {
if (obj
&& obj->isWidgetType()
&& obj != m_target) {
QApplication::sendEvent(m_target, event);
return true;
}
}
return QObject::eventFilter(obj, event);
}
ContextPaneWidgetImage::ContextPaneWidgetImage(QWidget *parent, bool borderImage) :
QWidget(parent),
ui(0), uiBorderImage(0), previewWasVisible(false)
{
LabelFilter *labelFilter = new LabelFilter(this);
m_borderImage = borderImage;
if (m_borderImage) {
uiBorderImage = new Ui::ContextPaneWidgetBorderImage;
uiBorderImage->setupUi(this);
m_fileWidget = uiBorderImage->fileWidget;
m_sizeLabel = uiBorderImage->sizeLabel;
uiBorderImage->label->setToolTip(tr("double click for preview"));
uiBorderImage->label->installEventFilter(labelFilter);
connect(uiBorderImage->verticalTileRadioButton, SIGNAL(toggled(bool)), this, SLOT(onVerticalStretchChanged()));
connect(uiBorderImage->verticalStretchRadioButton, SIGNAL(toggled(bool)), this, SLOT(onVerticalStretchChanged()));
connect(uiBorderImage->verticalTileRadioButtonNoCrop, SIGNAL(toggled(bool)), this, SLOT(onVerticalStretchChanged()));
connect(uiBorderImage->horizontalTileRadioButton, SIGNAL(toggled(bool)), this, SLOT(onHorizontalStretchChanged()));
connect(uiBorderImage->horizontalStretchRadioButton, SIGNAL(toggled(bool)), this, SLOT(onHorizontalStretchChanged()));
connect(uiBorderImage->horizontalTileRadioButtonNoCrop, SIGNAL(toggled(bool)), this, SLOT(onHorizontalStretchChanged()));
connect(previewDialog()->previewLabel(), SIGNAL(leftMarginChanged()), this, SLOT(onLeftMarginsChanged()));
connect(previewDialog()->previewLabel(), SIGNAL(rightMarginChanged()), this, SLOT(onRightMarginsChanged()));
connect(previewDialog()->previewLabel(), SIGNAL(topMarginChanged()), this, SLOT(onTopMarginsChanged()));
connect(previewDialog()->previewLabel(), SIGNAL(bottomMarginChanged()), this, SLOT(onBottomMarginsChanged()));
} else {
ui = new Ui::ContextPaneWidgetImage;
ui->setupUi(this);
ui->label->setToolTip(tr("double click for preview"));
ui->label->installEventFilter(labelFilter);
m_fileWidget = ui->fileWidget;
m_sizeLabel = ui->sizeLabel;
connect(ui->stretchRadioButton, SIGNAL(toggled(bool)), this, SLOT(onStretchChanged()));
connect(ui->tileRadioButton, SIGNAL(toggled(bool)), this, SLOT(onStretchChanged()));
connect(ui->horizontalStretchRadioButton, SIGNAL(toggled(bool)), this, SLOT(onStretchChanged()));
connect(ui->verticalStretchRadioButton, SIGNAL(toggled(bool)), this, SLOT(onStretchChanged()));
connect(ui->preserveAspectFitRadioButton, SIGNAL(toggled(bool)), this, SLOT(onStretchChanged()));
connect(ui->cropAspectFitRadioButton, SIGNAL(toggled(bool)), this, SLOT(onStretchChanged()));
}
previewDialog();
m_fileWidget->setShowComboBox(true);
m_fileWidget->setFilter("*.png *.gif *.jpg");
connect(m_fileWidget, SIGNAL(fileNameChanged(QUrl)), this, SLOT(onFileNameChanged()));
connect(labelFilter, SIGNAL(doubleClicked()), this, SLOT(onPixmapDoubleClicked()));
}
ContextPaneWidgetImage::~ContextPaneWidgetImage()
{
if (ui)
delete ui;
if (uiBorderImage)
delete uiBorderImage;
}
void ContextPaneWidgetImage::setProperties(QmlJS::PropertyReader *propertyReader)
{
if (m_borderImage) {
int leftBorder = 0;
int rightBorder = 0;
int topBorder = 0;
int bottomBorder = 0;
if (propertyReader->hasProperty(QLatin1String("border.left")))
leftBorder =propertyReader->readProperty(QLatin1String("border.left")).toInt();
if (propertyReader->hasProperty(QLatin1String("border.right")))
rightBorder =propertyReader->readProperty(QLatin1String("border.right")).toInt();
if (propertyReader->hasProperty(QLatin1String("border.top")))
topBorder =propertyReader->readProperty(QLatin1String("border.top")).toInt();
if (propertyReader->hasProperty(QLatin1String("border.bottom")))
bottomBorder =propertyReader->readProperty(QLatin1String("border.bottom")).toInt();
previewDialog()->previewLabel()->setMargins(leftBorder, topBorder, rightBorder, bottomBorder);
if (propertyReader->hasProperty(QLatin1String("horizontalTileMode"))) {
QString fillMode = propertyReader->readProperty(QLatin1String("horizontalTileMode")).toString();
if (fillMode.contains("BorderImage."))
fillMode.remove("BorderImage.");
uiBorderImage->horizontalStretchRadioButton->setChecked(true);
if (fillMode == "Stretch")
uiBorderImage->horizontalStretchRadioButton->setChecked(true);
if (fillMode == "Repeat")
uiBorderImage->horizontalTileRadioButton->setChecked(true);
if (fillMode == "Round")
uiBorderImage->horizontalTileRadioButtonNoCrop->setChecked(true);
} else {
//uiBorderImage
uiBorderImage->horizontalStretchRadioButton->setChecked(true);
}
if (propertyReader->hasProperty(QLatin1String("verticalTileMode"))) {
QString fillMode = propertyReader->readProperty(QLatin1String("verticalTileMode")).toString();
if (fillMode.contains("BorderImage."))
fillMode.remove("BorderImage.");
uiBorderImage->verticalStretchRadioButton->setChecked(true);
if (fillMode == "Stretch")
uiBorderImage->verticalStretchRadioButton->setChecked(true);
if (fillMode == "Repeat")
uiBorderImage->verticalTileRadioButton->setChecked(true);
if (fillMode == "Round")
uiBorderImage->verticalTileRadioButtonNoCrop->setChecked(true);
} else {
//uiBorderImage
uiBorderImage->verticalStretchRadioButton->setChecked(true);
}
} else {
if (propertyReader->hasProperty(QLatin1String("fillMode"))) {
QString fillMode = propertyReader->readProperty(QLatin1String("fillMode")).toString();
if (fillMode.contains("Image."))
fillMode.remove("Image.");
ui->stretchRadioButton->setChecked(true);
if (fillMode == "Image.Tile" || fillMode == "Tile")
ui->tileRadioButton->setChecked(true);
if (fillMode == "Image.TileVertically" || fillMode == "TileVertically")
ui->horizontalStretchRadioButton->setChecked(true);
if (fillMode == "Image.TileHorizontally" || fillMode == "TileHorizontally")
ui->verticalStretchRadioButton->setChecked(true);
if (fillMode == "Image.PreserveAspectFit" || fillMode == "PreserveAspectFit")
ui->preserveAspectFitRadioButton->setChecked(true);
if (fillMode == "Image.PreserveAspectCrop" || fillMode == "PreserveAspectCrop")
ui->cropAspectFitRadioButton->setChecked(true);
} else {
ui->stretchRadioButton->setChecked(true);
}
}
if (propertyReader->hasProperty(QLatin1String("source"))) {
QString source = propertyReader->readProperty(QLatin1String("source")).toString();
m_fileWidget->setFileName(source);
if (QFile::exists(m_path + '/' + source))
setPixmap(m_path + '/' + source);
else
setPixmap(source);
} else {
m_sizeLabel->setText("");
}
}
void ContextPaneWidgetImage::setPath(const QString& path)
{
m_path = path;
m_fileWidget->setPath(QUrl::fromLocalFile(m_path));
}
void PreviewDialog::setZoom(int z)
{
m_zoom = z;
m_label->setZoom(z);
switch (m_zoom) {
case 1:
m_zoomLabel->setText("100%");
m_slider->setValue(1);
break;
case 2:
m_zoomLabel->setText("200%");
m_slider->setValue(2);
break;
case 4:
m_zoomLabel->setText("400%");
m_slider->setValue(3);
break;
case 6:
m_zoomLabel->setText("600%");
m_slider->setValue(4);
break;
case 8:
m_zoomLabel->setText("800%");
m_slider->setValue(5);
break;
case 10:
m_zoomLabel->setText("1000%");
m_slider->setValue(6);
break;
default: break;
}
setPixmap(m_pixmap, m_zoom);
}
void PreviewDialog::setIsBorderImage(bool b)
{
m_borderImage = b;
m_label->setIsBorderImage(b);
}
PreviewLabel *PreviewDialog::previewLabel() const
{
return m_label;
}
void ContextPaneWidgetImage::onStretchChanged()
{
QString stretch;
if (ui->stretchRadioButton->isChecked())
stretch = QLatin1String("Image.Stretch");
else if (ui->tileRadioButton->isChecked())
stretch = QLatin1String("Image.Tile");
else if (ui->horizontalStretchRadioButton->isChecked())
stretch = QLatin1String("Image.TileVertically");
else if (ui->verticalStretchRadioButton->isChecked())
stretch = QLatin1String("Image.TileHorizontally");
else if (ui->preserveAspectFitRadioButton->isChecked())
stretch = QLatin1String("Image.PreserveAspectFit");
else if (ui->cropAspectFitRadioButton->isChecked())
stretch = QLatin1String("Image.PreserveAspectCrop");
if (stretch == QLatin1String("Image.Stretch"))
emit removeProperty(QLatin1String("fillMode"));
else
emit propertyChanged(QLatin1String("fillMode"), stretch);
}
void ContextPaneWidgetImage::onHorizontalStretchChanged()
{
QString stretch;
if (uiBorderImage->horizontalStretchRadioButton->isChecked())
stretch = QLatin1String("BorderImage.Stretch");
if (uiBorderImage->horizontalTileRadioButton->isChecked())
stretch = QLatin1String("BorderImage.Repeat");
if (uiBorderImage->horizontalTileRadioButtonNoCrop->isChecked())
stretch = QLatin1String("BorderImage.Round");
if (stretch == QLatin1String("BorderImage.Stretch"))
emit removeProperty(QLatin1String("horizontalTileMode"));
else
emit propertyChanged(QLatin1String("horizontalTileMode"), stretch);
}
void ContextPaneWidgetImage::onVerticalStretchChanged()
{
QString stretch;
if (uiBorderImage->verticalStretchRadioButton->isChecked())
stretch = QLatin1String("BorderImage.Stretch");
if (uiBorderImage->verticalTileRadioButton->isChecked())
stretch = QLatin1String("BorderImage.Repeat");
if (uiBorderImage->verticalTileRadioButtonNoCrop->isChecked())
stretch = QLatin1String("BorderImage.Round");
if (stretch == QLatin1String("BorderImage.Stretch"))
emit removeProperty(QLatin1String("verticalTileMode"));
else
emit propertyChanged(QLatin1String("verticalTileMode"), stretch);
}
void ContextPaneWidgetImage::onFileNameChanged()
{
if (m_fileWidget->fileName().isNull())
emit removeProperty(QLatin1String("source"));
else
emit propertyChanged(QLatin1String("source"), QString(QLatin1Char('\"') + m_fileWidget->fileName() + QLatin1Char('\"')));
}
void ContextPaneWidgetImage::onPixmapDoubleClicked()
{
previewDialog()->setParent(parentWidget()->parentWidget());
previewDialog()->setMaximumSize(previewDialog()->parentWidget()->size() - QSize(150, 100));
if (m_borderImage)
previewDialog()->setZoom(4);
previewDialog()->setIsBorderImage(m_borderImage);
QPoint p = parentWidget()->pos();
p = p + QPoint(-2, -2);
previewDialog()->show();
previewDialog()->update();
previewDialog()->move(p);
//previewDialog()->adjustSize();
if ((previewDialog()->pos().x() + previewDialog()->width()) > previewDialog()->parentWidget()->width())
previewDialog()->move(previewDialog()->parentWidget()->width() - (previewDialog()->width()) - 40, p.y());
if ((previewDialog()->pos().y() + previewDialog()->height()) > previewDialog()->parentWidget()->height())
previewDialog()->move(previewDialog()->pos().x(), previewDialog()->parentWidget()->height() - (previewDialog()->height()) - 40);
if (previewDialog()->pos().x() < 0)
previewDialog()->move(0, previewDialog()->pos().y());
if (previewDialog()->pos().y() < 0)
previewDialog()->move(previewDialog()->pos().x(), 0);
previewDialog()->raise();
}
void ContextPaneWidgetImage::onLeftMarginsChanged()
{
if (previewDialog()->previewLabel()->leftMarging())
propertyChanged(QLatin1String("border.left"), previewDialog()->previewLabel()->leftMarging());
else
emit removeProperty(QLatin1String("border.left"));
}
void ContextPaneWidgetImage::onRightMarginsChanged()
{
if (previewDialog()->previewLabel()->rightMarging())
propertyChanged(QLatin1String("border.right"), previewDialog()->previewLabel()->rightMarging());
else
emit removeProperty(QLatin1String("border.right"));
}
void ContextPaneWidgetImage::onTopMarginsChanged()
{
if (previewDialog()->previewLabel()->topMarging())
propertyChanged(QLatin1String("border.top"), previewDialog()->previewLabel()->topMarging());
else
emit removeProperty(QLatin1String("border.top"));
}
void ContextPaneWidgetImage::onBottomMarginsChanged()
{
if (previewDialog()->previewLabel()->bottomMarging())
propertyChanged(QLatin1String("border.bottom"), previewDialog()->previewLabel()->bottomMarging());
else
emit removeProperty(QLatin1String("border.bottom"));
}
static inline Qt::TileRule stringToRule(const QString &s)
{
if (s == QLatin1String("Stretch"))
return Qt::StretchTile;
if (s == QLatin1String("Repeat"))
return Qt::RepeatTile;
if (s == QLatin1String("Round"))
return Qt::RoundTile;
qWarning("QDeclarativeGridScaledImage: Invalid tile rule specified. Using Stretch.");
return Qt::StretchTile;
}
static inline bool parseSciFile(const QString &fileName, QString &pixmapFileName, int &left, int &right, int &top, int &bottom, Qt::TileRule &horizontalTileRule, Qt::TileRule &verticalTileRule)
{
int l = -1;
int r = -1;
int t = -1;
int b = -1;
QString imgFile;
QFile data(fileName);
data.open(QIODevice::ReadOnly);
QByteArray raw;
while(raw = data.readLine(), !raw.isEmpty()) {
QString line = QString::fromUtf8(raw.trimmed());
if (line.isEmpty() || line.startsWith(QLatin1Char('#')))
continue;
QStringList list = line.split(QLatin1Char(':'));
if (list.count() != 2)
return false;
list[0] = list[0].trimmed();
list[1] = list[1].trimmed();
if (list[0] == QLatin1String("border.left"))
l = list[1].toInt();
else if (list[0] == QLatin1String("border.right"))
r = list[1].toInt();
else if (list[0] == QLatin1String("border.top"))
t = list[1].toInt();
else if (list[0] == QLatin1String("border.bottom"))
b = list[1].toInt();
else if (list[0] == QLatin1String("source"))
imgFile = list[1];
else if (list[0] == QLatin1String("horizontalTileRule"))
horizontalTileRule = stringToRule(list[1]);
else if (list[0] == QLatin1String("verticalTileRule"))
verticalTileRule = stringToRule(list[1]);
}
if (l < 0 || r < 0 || t < 0 || b < 0 || imgFile.isEmpty())
return false;
left = l; right = r; top = t; bottom = b;
pixmapFileName = imgFile;
return true;
}
void ContextPaneWidgetImage::setPixmap(const QString &fileName)
{
QPixmap pix(76,76);
pix.fill(Qt::black);
if (m_borderImage) {
QString localFileName(fileName);
if (QFile(fileName).exists()) {
if (fileName.endsWith(QLatin1String("sci"))) {
QString pixmapFileName;
int left = 0;
int right = 0;
int top = 0;
int bottom = 0;
Qt::TileRule horizontalTileRule;
Qt::TileRule verticalTileRule;
if (parseSciFile(fileName, pixmapFileName, left, right, top, bottom, horizontalTileRule, verticalTileRule)) {
localFileName = QFileInfo(fileName).absoluteDir().absolutePath() + '/' + pixmapFileName;
previewDialog()->previewLabel()->setMargins(left, top, right, bottom);
} else { // sci file not parsed correctly
uiBorderImage->sizeLabel->setText("");
return;
}
}
QPixmap source(localFileName);
if (source.isNull())
source = pix;
previewDialog()->setPixmap(source, previewDialog()->zoom());
uiBorderImage->sizeLabel->setText(QString::number(source.width()) + 'x' + QString::number(source.height()));
QPainter p(&pix);
Qt::TileRule horizontalTileMode = Qt::StretchTile;
Qt::TileRule verticalTileMode = Qt::StretchTile;
if (uiBorderImage->horizontalTileRadioButton->isChecked())
horizontalTileMode =Qt::RepeatTile;
if (uiBorderImage->horizontalTileRadioButtonNoCrop->isChecked())
horizontalTileMode =Qt::RoundTile;
if (uiBorderImage->verticalTileRadioButton->isChecked())
verticalTileMode =Qt::RepeatTile;
if (uiBorderImage->verticalTileRadioButtonNoCrop->isChecked())
verticalTileMode =Qt::RoundTile;
QTileRules rules(horizontalTileMode, verticalTileMode);
QMargins margins(previewDialog()->previewLabel()->leftMarging() ,previewDialog()->previewLabel()->topMarging() ,previewDialog()->previewLabel()->rightMarging(), previewDialog()->previewLabel()->bottomMarging());
qDrawBorderPixmap(&p, QRect(0, 0, 76, 76), margins, source, source.rect(), margins, rules);
//p.drawPixmap(0,0,76,76, source);
} else {
uiBorderImage->sizeLabel->setText("");
}
uiBorderImage->label->setPixmap(pix);
} else {
if (QFile(fileName).exists()) {
QPixmap source(fileName);
previewDialog()->setPixmap(source, 1);
ui->sizeLabel->setText(QString::number(source.width()) + 'x' + QString::number(source.height()));
QPainter p(&pix);
if (ui->stretchRadioButton->isChecked()) {
p.drawPixmap(0,0,76,76, source);
} else if (ui->tileRadioButton->isChecked()) {
QPixmap small = source.scaled(38,38);
p.drawTiledPixmap(0,0,76,76, small);
} else if (ui->horizontalStretchRadioButton->isChecked()) {
QPixmap small = source.scaled(38,38);
QPixmap half = pix.scaled(38, 76);
QPainter p2(&half);
p2.drawTiledPixmap(0,0,38,76, small);
p.drawPixmap(0,0,76,76, half);
} else if (ui->verticalStretchRadioButton->isChecked()) {
QPixmap small = source.scaled(38,38);
QPixmap half = pix.scaled(76, 38);
QPainter p2(&half);
p2.drawTiledPixmap(0,0,76,38, small);
p.drawPixmap(0,0,76,76, half);
} else if (ui->preserveAspectFitRadioButton->isChecked()) {
QPixmap preserved = source.scaledToWidth(76);
int offset = (76 - preserved.height()) / 2;
p.drawPixmap(0, offset, 76, preserved.height(), source);
} else if (ui->cropAspectFitRadioButton->isChecked()) {
QPixmap cropped = source.scaledToHeight(76);
int offset = (76 - cropped.width()) / 2;
p.drawPixmap(offset, 0, cropped.width(), 76, source);
}
} else {
ui->sizeLabel->setText("");
}
ui->label->setPixmap(pix);
}
}
PreviewDialog* ContextPaneWidgetImage::previewDialog()
{
if (!m_previewDialog) {
m_previewDialog = new PreviewDialog(this);
m_previewDialog->hide();
}
return m_previewDialog.data();
}
void ContextPaneWidgetImage::changeEvent(QEvent *e)
{
QWidget::changeEvent(e);
switch (e->type()) {
case QEvent::LanguageChange:
if (ui)
ui->retranslateUi(this);
if (uiBorderImage)
uiBorderImage->retranslateUi(this);
break;
default:
break;
}
}
void ContextPaneWidgetImage::hideEvent(QHideEvent * event)
{
previewWasVisible = previewDialog()->isVisible();
previewDialog()->hide();
QWidget::hideEvent(event);
}
void ContextPaneWidgetImage::showEvent(QShowEvent* event)
{
if (previewWasVisible)
previewDialog()->show();
QWidget::showEvent(event);
}
PreviewLabel::PreviewLabel(QWidget *parent)
: QLabel(parent),
m_dragging_left(false), m_dragging_right(false),
m_dragging_top(false), m_dragging_bottom(false)
{
m_zoom = 1;
m_showBorders = false;
m_left = 2;
m_right = 2;
m_top = 2;
m_bottom = 2;
setMouseTracking(true);
setCursor(QCursor(Qt::ArrowCursor));
m_hooverInfo = new QLabel(parentWidget());
m_hooverInfo->hide();
m_hooverInfo->setFrameShape(QFrame::StyledPanel);
m_hooverInfo->setFrameShadow(QFrame::Sunken);
QGraphicsDropShadowEffect *dropShadowEffect = new QGraphicsDropShadowEffect;
dropShadowEffect->setBlurRadius(4);
dropShadowEffect->setOffset(2, 2);
m_hooverInfo->setGraphicsEffect(dropShadowEffect);
m_hooverInfo->setAutoFillBackground(true);
m_hooverInfo->raise();
}
void PreviewLabel::setZoom(int z)
{
m_zoom = z;
}
void PreviewLabel::setIsBorderImage(bool b)
{
m_borderImage = b;
}
void PreviewLabel::setMargins(int left, int top, int right, int bottom)
{
m_left = left;
m_top = top;
m_right = right;
m_bottom = bottom;
}
void PreviewLabel::paintEvent(QPaintEvent *event)
{
QLabel::paintEvent(event);
if (m_borderImage) {
QPainter p(this);
p.setOpacity(0.5);
p.setBackgroundMode(Qt::TransparentMode);
{
QPen pen(Qt::SolidLine);
pen.setColor("#F0F0F0");
p.setPen(pen);
if (m_left >= 0)
p.drawLine(m_left * m_zoom, 4, m_left * m_zoom, height() - 4);
if (m_right >= 0)
p.drawLine(width() - m_right * m_zoom - 1, 4, width() - m_right * m_zoom - 1, height() - 4);
if (m_top >= 0)
p.drawLine(4, m_top * m_zoom, width() - 4, m_top * m_zoom);
if (m_bottom >= 0)
p.drawLine(4, height() - m_bottom * m_zoom - 1, width() - 4, height() - m_bottom * m_zoom - 1);
}
{
QBrush brush(Qt::Dense4Pattern);
brush.setColor("#101010");
QPen pen(brush, 1, Qt::DotLine);
pen.setColor("#101010");
p.setPen(pen);
if (m_left >= 0)
p.drawLine(m_left * m_zoom, 4, m_left * m_zoom, height() - 4);
if (m_right >= 0)
p.drawLine(width() - m_right * m_zoom - 1, 4, width() - m_right * m_zoom - 1, height() - 4);
if (m_top >= 0)
p.drawLine(4, m_top * m_zoom, width() - 4, m_top * m_zoom);
if (m_bottom >= 0)
p.drawLine(4, height() - m_bottom * m_zoom - 1, width() - 4, height() - m_bottom * m_zoom - 1);
}
}
}
static inline bool rangeCheck(int target, int pos)
{
return (target - 10 < pos) && (target + 10 > pos);
}
void PreviewLabel::mousePressEvent(QMouseEvent * event)
{
if (!m_borderImage)
return QLabel::mouseMoveEvent(event);
bool bottom = false;
if (event->button() == Qt::LeftButton) {
if (QApplication::overrideCursor())
QApplication::restoreOverrideCursor();
if (rangeCheck(m_left * m_zoom, event->pos().x())) {
QApplication::setOverrideCursor(QCursor(Qt::SizeHorCursor));
m_dragging_left = true;
event->accept();
m_hooverInfo->setText("Left " + QString::number(m_left));
m_hooverInfo->show();
} else if (rangeCheck(m_top * m_zoom, event->pos().y())) {
QApplication::setOverrideCursor(QCursor(Qt::SizeVerCursor));
m_dragging_top = true;
event->accept();
m_hooverInfo->setText("Top " + QString::number(m_top));
m_hooverInfo->show();
} else if (rangeCheck(m_right * m_zoom, width() - event->pos().x())) {
QApplication::setOverrideCursor(QCursor(Qt::SizeHorCursor));
m_dragging_right = true;
event->accept();
m_hooverInfo->setText("Right " + QString::number(m_right));
m_hooverInfo->show();
} else if (rangeCheck(m_bottom * m_zoom, height() - event->pos().y())) {
QApplication::setOverrideCursor(QCursor(Qt::SizeVerCursor));
m_dragging_bottom = true;
event->accept();
m_hooverInfo->setText("Bottom " + QString::number(m_bottom));
m_hooverInfo->show();
bottom = true;
} else {
QLabel::mousePressEvent(event);
}
m_startPos = event->pos();
if (bottom)
m_hooverInfo->move(mapToParent(m_startPos) + QPoint(0, -10));
else
m_hooverInfo->move(mapToParent(m_startPos) + QPoint(0, 40));
m_hooverInfo->resize(m_hooverInfo->sizeHint());
m_hooverInfo->raise();
}
}
void PreviewLabel::mouseReleaseEvent(QMouseEvent * event)
{
if (!m_borderImage)
return QLabel::mouseMoveEvent(event);
if (m_dragging_left || m_dragging_top || m_dragging_right|| m_dragging_bottom) {
m_hooverInfo->hide();
if (m_dragging_left)
emit leftMarginChanged();
if (m_dragging_top)
emit topMarginChanged();
if (m_dragging_bottom)
emit bottomMarginChanged();
if (m_dragging_right)
emit rightMarginChanged();
m_dragging_left = false;
m_dragging_top = false;
m_dragging_right = false;
m_dragging_bottom = false;
QApplication::restoreOverrideCursor();
event->accept();
} else {
QLabel::mouseReleaseEvent(event);
}
}
static inline int limitPositive(int i)
{
if (i >= 0)
return i;
return 0;
}
static inline int limit(int i, int zoom)
{
static bool flag1 = 1;
static bool flag2 = 1;
if (zoom == 1)
return i;
if (i < 0) {
int v = i / zoom;
if (v)
return v;
if (zoom == 2) {
flag1 =!flag1;
return flag1 ? -1 : 0;
}
flag1 =!flag1;
if (flag1)
flag2 =!flag2;
return flag1 && flag2 ? -1 : 0;
}
if (i > 0) {
int v = i / zoom;
if (v)
return v;
if (zoom == 2) {
flag1 =!flag1;
return flag1 ? 1 : 0;
}
flag1 =!flag1;
if (flag1)
flag2 =!flag2;
return flag1 && flag2 ? 1 : 0;
}
return 0;
}
void PreviewLabel::mouseMoveEvent(QMouseEvent * event)
{
if (!m_borderImage)
return QLabel::mouseMoveEvent(event);
QPoint p = event->pos();
bool bottom = false;
if (m_dragging_left) {
m_left = p.x() / m_zoom;
m_left = limitPositive(m_left);
event->accept();
m_hooverInfo->setText("Left " + QString::number(m_left));
update();
} else if (m_dragging_top) {
m_top = p.y() / m_zoom;
m_top = limitPositive(m_top);
event->accept();
m_hooverInfo->setText("Top " + QString::number(m_top));
update();
} else if (m_dragging_right) {
m_right = (width() - p.x()) / m_zoom;
m_right = limitPositive(m_right);
event->accept();
m_hooverInfo->setText("Right " + QString::number(m_right));
update();
} else if (m_dragging_bottom) {
m_bottom = (height() - p.y()) / m_zoom;
m_bottom = limitPositive(m_bottom);
event->accept();
m_hooverInfo->setText("Bottom " + QString::number(m_bottom));
bottom = true;
update();
} else if (rangeCheck(m_left * m_zoom, p.x())) {
QApplication::setOverrideCursor(QCursor(Qt::SizeHorCursor));
event->accept();
m_hooverInfo->setText("Left " + QString::number(m_left));
m_hooverInfo->show();
} else if (rangeCheck(m_top * m_zoom, p.y())) {
QApplication::setOverrideCursor(QCursor(Qt::SizeVerCursor));
event->accept();
m_hooverInfo->setText("Top " + QString::number(m_top));
m_hooverInfo->show();
} else if (rangeCheck(m_right * m_zoom, width() - p.x())) {
QApplication::setOverrideCursor(QCursor(Qt::SizeHorCursor));
event->accept();
m_hooverInfo->setText("Right " + QString::number(m_right));
m_hooverInfo->show();
} else if (rangeCheck(m_bottom * m_zoom, height() - p.y())) {
QApplication::setOverrideCursor(QCursor(Qt::SizeVerCursor));
event->accept();
m_hooverInfo->setText("Bottom " + QString::number(m_bottom));
m_hooverInfo->show();
bottom = true;
} else {
if (QApplication::overrideCursor())
QApplication::restoreOverrideCursor();
QLabel::mouseMoveEvent(event);
m_hooverInfo->hide();
}
m_startPos = p;
if (bottom)
m_hooverInfo->move(mapToParent(p) + QPoint(0, -10));
else
m_hooverInfo->move(mapToParent(p) + QPoint(0, 40));
m_hooverInfo->resize(m_hooverInfo->sizeHint());
m_hooverInfo->raise();
}
void PreviewLabel::leaveEvent(QEvent* event )
{
while (QApplication::overrideCursor())
QApplication::restoreOverrideCursor();
m_hooverInfo->hide();
QLabel::leaveEvent(event);
}
PreviewDialog::PreviewDialog(QWidget *parent) : DragWidget(parent)
{
m_borderImage = false;
setAutoFillBackground(true);
m_label = new PreviewLabel(this);
m_slider = new QSlider(this);
m_zoomLabel = new QLabel(this);
setZoom(1);
QVBoxLayout *layout = new QVBoxLayout(this);
QHBoxLayout *horizontalLayout = new QHBoxLayout();
QHBoxLayout *horizontalLayout2 = new QHBoxLayout();
layout->setMargin(0);
layout->setContentsMargins(2, 2, 2, 16);
layout->setSpacing(4);
QToolButton *toolButton = new QToolButton(this);
QIcon icon(style()->standardIcon(QStyle::SP_DockWidgetCloseButton));
toolButton->setIcon(icon);
toolButton->setToolButtonStyle(Qt::ToolButtonIconOnly);
toolButton->setFixedSize(icon.availableSizes().value(0) + QSize(4, 4));
connect(toolButton, SIGNAL(clicked()), this, SLOT(onTogglePane()));
QScrollArea *scrollArea = new QScrollArea(this);
WheelFilter *wheelFilter = new WheelFilter(scrollArea);
scrollArea->setWidget(m_label);
scrollArea->setFrameStyle(QFrame::NoFrame);
m_slider->setOrientation(Qt::Horizontal);
m_slider->setRange(1, 6);
m_slider->setFixedWidth(80);
m_zoomLabel->setFixedWidth(50);
horizontalLayout->addWidget(toolButton);
horizontalLayout->addSpacing(6);
horizontalLayout->addWidget(m_slider);
horizontalLayout->addSpacing(6);
horizontalLayout->addWidget(m_zoomLabel);
horizontalLayout->addStretch(1);
layout->addLayout(horizontalLayout);
horizontalLayout2->addSpacing(24);
horizontalLayout2->addWidget(scrollArea);
layout->addLayout(horizontalLayout2);
wheelFilter->setTarget(this);
connect(m_slider, SIGNAL(valueChanged(int)), this, SLOT(onSliderMoved(int)));
foreach (QWidget *childWidget, findChildren<QWidget*>()) {
childWidget->installEventFilter(wheelFilter);
}
}
void PreviewDialog::setPixmap(const QPixmap &p, int zoom)
{
m_pixmap = p;
if (!p.isNull())
m_label->setPixmap(p.scaled(p.width() * zoom, p.height() * zoom));
else
m_label->setPixmap(QPixmap());
m_label->adjustSize();
m_zoom = zoom;
m_label->setZoom(m_zoom);
QSize size = m_label->pixmap()->size() + QSize(54, 44);
if (size.width() < 180)
size.setWidth(180);
resize(size);
}
void PreviewDialog::wheelEvent(QWheelEvent* event)
{
int delta = event->delta();
event->accept();
if (delta > 0) {
if (m_zoom == 1)
setZoom(2);
else if (m_zoom == 2)
setZoom(4);
else if (m_zoom == 4)
setZoom(6);
else if (m_zoom == 6)
setZoom(8);
else if (m_zoom == 8)
setZoom(10);
} else {
if (m_zoom == 10)
setZoom(8);
else if (m_zoom == 8)
setZoom(6);
else if (m_zoom == 6)
setZoom(4);
else if (m_zoom == 4)
setZoom(2);
else if (m_zoom == 2)
setZoom(1);
}
setPixmap(m_pixmap, m_zoom);
}
void PreviewDialog::onTogglePane()
{
hide();
}
void PreviewDialog::onSliderMoved(int value)
{
switch (value) {
case 1: setZoom(1); break;
case 2: setZoom(2); break;
case 3: setZoom(4); break;
case 4: setZoom(6); break;
case 5: setZoom(8); break;
case 6: setZoom(10); break;
default: break;
}
}
} //QmlDesigner