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diff --git a/src/pixeltool/qpixeltool.cpp b/src/pixeltool/qpixeltool.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the tools applications of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qpixeltool.h"
+
+#include <qapplication.h>
+#include <qdesktopwidget.h>
+#include <qapplication.h>
+#include <qclipboard.h>
+#include <qpainter.h>
+#include <qevent.h>
+#include <qfiledialog.h>
+#include <qsettings.h>
+#include <qmenu.h>
+#include <qactiongroup.h>
+
+#include <qdebug.h>
+
+QT_BEGIN_NAMESPACE
+
+QPixelTool::QPixelTool(QWidget *parent)
+ : QWidget(parent)
+{
+ setWindowTitle(QLatin1String("PixelTool"));
+ QSettings settings(QLatin1String("Trolltech"), QLatin1String("QPixelTool"));
+
+ m_freeze = false;
+
+ m_autoUpdate = settings.value(QLatin1String("autoUpdate"), 0).toBool();
+
+ m_gridSize = settings.value(QLatin1String("gridSize"), 1).toInt();
+ m_gridActive = settings.value(QLatin1String("gridActive"), 1).toInt();
+ m_displayGridSize = false;
+ m_displayGridSizeId = 0;
+
+ m_zoom = settings.value(QLatin1String("zoom"), 4).toInt();
+
+ m_displayZoom = false;
+ m_displayZoomId = 0;
+
+ m_preview_mode = false;
+
+ m_currentColor = 0;
+
+ m_mouseDown = false;
+
+ m_initialSize = settings.value(QLatin1String("initialSize"), QSize(250, 200)).toSize();
+
+ move(settings.value(QLatin1String("position")).toPoint());
+
+ setMouseTracking(true);
+ setAttribute(Qt::WA_NoBackground);
+ m_updateId = startTimer(30);
+}
+
+QPixelTool::~QPixelTool()
+{
+ QSettings settings(QLatin1String("Trolltech"), QLatin1String("QPixelTool"));
+ settings.setValue(QLatin1String("autoUpdate"), int(m_autoUpdate));
+ settings.setValue(QLatin1String("gridSize"), m_gridSize);
+ settings.setValue(QLatin1String("gridActive"), m_gridActive);
+ settings.setValue(QLatin1String("zoom"), m_zoom);
+ settings.setValue(QLatin1String("initialSize"), size());
+ settings.setValue(QLatin1String("position"), pos());
+}
+
+void QPixelTool::setPreviewImage(const QImage &image)
+{
+ m_preview_mode = true;
+ m_preview_image = image;
+ m_freeze = true;
+}
+
+void QPixelTool::timerEvent(QTimerEvent *event)
+{
+ if (event->timerId() == m_updateId && !m_freeze) {
+ grabScreen();
+ } else if (event->timerId() == m_displayZoomId) {
+ killTimer(m_displayZoomId);
+ setZoomVisible(false);
+ } else if (event->timerId() == m_displayGridSizeId) {
+ killTimer(m_displayGridSizeId);
+ m_displayGridSize = false;
+ }
+}
+
+void render_string(QPainter *p, int w, int h, const QString &text, int flags)
+{
+ p->setBrush(QColor(255, 255, 255, 191));
+ p->setPen(Qt::black);
+ QRect bounds;
+ p->drawText(0, 0, w, h, Qt::TextDontPrint | flags, text, &bounds);
+
+ if (bounds.x() == 0) bounds.adjust(0, 0, 10, 0);
+ else bounds.adjust(-10, 0, 0, 0);
+
+ if (bounds.y() == 0) bounds.adjust(0, 0, 0, 10);
+ else bounds.adjust(0, -10, 0, 0);
+
+ p->drawRect(bounds);
+ p->drawText(bounds, flags, text);
+}
+
+void QPixelTool::paintEvent(QPaintEvent *)
+{
+ QPainter p(this);
+
+ if (m_preview_mode) {
+ QPixmap pixmap(40, 40);
+ QPainter pt(&pixmap);
+ pt.fillRect(0, 0, 20, 20, Qt::white);
+ pt.fillRect(20, 20, 20, 20, Qt::white);
+ pt.fillRect(20, 0, 20, 20, Qt::lightGray);
+ pt.fillRect(0, 20, 20, 20, Qt::lightGray);
+ pt.end();
+ p.fillRect(0, 0, width(), height(), pixmap);
+ }
+
+ int w = width();
+ int h = height();
+
+ p.save();
+ p.scale(m_zoom, m_zoom);
+ p.drawPixmap(0, 0, m_buffer);
+ p.scale(1/m_zoom, 1/m_zoom);
+ p.restore();
+
+ // Draw the grid on top.
+ if (m_gridActive) {
+ p.setPen(m_gridActive == 1 ? Qt::black : Qt::white);
+ int incr = m_gridSize * m_zoom;
+ for (int x=0; x<w; x+=incr)
+ p.drawLine(x, 0, x, h);
+ for (int y=0; y<h; y+=incr)
+ p.drawLine(0, y, w, y);
+ }
+
+ QFont f(QLatin1String("courier"));
+ f.setBold(true);
+ p.setFont(f);
+
+ if (m_displayZoom) {
+ render_string(&p, w, h,
+ QString::fromLatin1("Zoom: x%1").arg(m_zoom),
+ Qt::AlignTop | Qt::AlignRight);
+ }
+
+ if (m_displayGridSize) {
+ render_string(&p, w, h,
+ QString::fromLatin1("Grid size: %1").arg(m_gridSize),
+ Qt::AlignBottom | Qt::AlignLeft);
+ }
+
+ if (m_freeze) {
+ QString str;
+ str.sprintf("%8X (%3d,%3d,%3d,%3d)",
+ m_currentColor,
+ (0xff000000 & m_currentColor) >> 24,
+ (0x00ff0000 & m_currentColor) >> 16,
+ (0x0000ff00 & m_currentColor) >> 8,
+ (0x000000ff & m_currentColor));
+ render_string(&p, w, h,
+ str,
+ Qt::AlignBottom | Qt::AlignRight);
+ }
+
+ if (m_mouseDown && m_dragStart != m_dragCurrent) {
+ int x1 = (m_dragStart.x() / m_zoom) * m_zoom;
+ int y1 = (m_dragStart.y() / m_zoom) * m_zoom;
+ int x2 = (m_dragCurrent.x() / m_zoom) * m_zoom;
+ int y2 = (m_dragCurrent.y() / m_zoom) * m_zoom;
+ QRect r = QRect(x1, y1, x2 - x1, y2 - y1).normalized();
+ p.setBrush(Qt::NoBrush);
+ p.setPen(QPen(Qt::red, 3, Qt::SolidLine));
+ p.drawRect(r);
+ p.setPen(QPen(Qt::black, 1, Qt::SolidLine));
+ p.drawRect(r);
+
+ QString str;
+ str.sprintf("Rect: x=%d, y=%d, w=%d, h=%d",
+ r.x() / m_zoom,
+ r.y() / m_zoom,
+ r.width() / m_zoom,
+ r.height() / m_zoom);
+ render_string(&p, w, h, str, Qt::AlignBottom | Qt::AlignLeft);
+ }
+
+
+}
+
+void QPixelTool::keyPressEvent(QKeyEvent *e)
+{
+ switch (e->key()) {
+ case Qt::Key_Space:
+ toggleFreeze();
+ break;
+ case Qt::Key_Plus:
+ setZoom(m_zoom + 1);
+ break;
+ case Qt::Key_Minus:
+ setZoom(m_zoom - 1);
+ break;
+ case Qt::Key_PageUp:
+ setGridSize(m_gridSize + 1);
+ break;
+ case Qt::Key_PageDown:
+ setGridSize(m_gridSize - 1);
+ break;
+ case Qt::Key_G:
+ toggleGrid();
+ break;
+ case Qt::Key_A:
+ m_autoUpdate = !m_autoUpdate;
+ break;
+ case Qt::Key_C:
+ if (e->modifiers() & Qt::ControlModifier)
+ copyToClipboard();
+ break;
+ case Qt::Key_S:
+ if (e->modifiers() & Qt::ControlModifier) {
+ releaseKeyboard();
+ saveToFile();
+ }
+ break;
+ case Qt::Key_Control:
+ grabKeyboard();
+ break;
+ }
+}
+
+void QPixelTool::keyReleaseEvent(QKeyEvent *e)
+{
+ switch(e->key()) {
+ case Qt::Key_Control:
+ releaseKeyboard();
+ break;
+ default:
+ break;
+ }
+}
+
+void QPixelTool::resizeEvent(QResizeEvent *)
+{
+ grabScreen();
+}
+
+void QPixelTool::mouseMoveEvent(QMouseEvent *e)
+{
+ if (m_mouseDown)
+ m_dragCurrent = e->pos();
+
+ int x = e->x() / m_zoom;
+ int y = e->y() / m_zoom;
+
+ QImage im = m_buffer.toImage().convertToFormat(QImage::Format_ARGB32);
+ if (x < im.width() && y < im.height() && x >= 0 && y >= 0) {
+ m_currentColor = im.pixel(x, y);
+ update();
+ }
+}
+
+void QPixelTool::mousePressEvent(QMouseEvent *e)
+{
+ if (!m_freeze)
+ return;
+ m_mouseDown = true;
+ m_dragStart = e->pos();
+}
+
+void QPixelTool::mouseReleaseEvent(QMouseEvent *)
+{
+ m_mouseDown = false;
+}
+
+void QPixelTool::contextMenuEvent(QContextMenuEvent *e)
+{
+ bool tmpFreeze = m_freeze;
+ m_freeze = true;
+
+ QMenu menu;
+
+ QAction title(QLatin1String("Qt Pixel Zooming Tool"), &menu);
+ title.setEnabled(false);
+
+ // Grid color options...
+ QActionGroup gridGroup(this);
+ QAction whiteGrid(QLatin1String("White grid"), &gridGroup);
+ whiteGrid.setCheckable(true);
+ whiteGrid.setChecked(m_gridActive == 2);
+ whiteGrid.setShortcut(QKeySequence(Qt::Key_G));
+ QAction blackGrid(QLatin1String("Black grid"), &gridGroup);
+ blackGrid.setCheckable(true);
+ blackGrid.setChecked(m_gridActive == 1);
+ blackGrid.setShortcut(QKeySequence(Qt::Key_G));
+ QAction noGrid(QLatin1String("No grid"), &gridGroup);
+ noGrid.setCheckable(true);
+ noGrid.setChecked(m_gridActive == 0);
+ noGrid.setShortcut(QKeySequence(Qt::Key_G));
+
+ // Grid size options
+ QAction incrGrid(QLatin1String("Increase grid size"), &menu);
+ incrGrid.setShortcut(QKeySequence(Qt::Key_PageUp));
+ connect(&incrGrid, SIGNAL(triggered()), this, SLOT(increaseGridSize()));
+ QAction decrGrid(QLatin1String("Decrease grid size"), &menu);
+ decrGrid.setShortcut(QKeySequence(Qt::Key_PageDown));
+ connect(&decrGrid, SIGNAL(triggered()), this, SLOT(decreaseGridSize()));
+
+ // Zoom options
+ QAction incrZoom(QLatin1String("Zoom in"), &menu);
+ incrZoom.setShortcut(QKeySequence(Qt::Key_Plus));
+ connect(&incrZoom, SIGNAL(triggered()), this, SLOT(increaseZoom()));
+ QAction decrZoom(QLatin1String("Zoom out"), &menu);
+ decrZoom.setShortcut(QKeySequence(Qt::Key_Minus));
+ connect(&decrZoom, SIGNAL(triggered()), this, SLOT(decreaseZoom()));
+
+ // Freeze / Autoupdate
+ QAction freeze(QLatin1String("Frozen"), &menu);
+ freeze.setCheckable(true);
+ freeze.setChecked(tmpFreeze);
+ freeze.setShortcut(QKeySequence(Qt::Key_Space));
+ QAction autoUpdate(QLatin1String("Continuous update"), &menu);
+ autoUpdate.setCheckable(true);
+ autoUpdate.setChecked(m_autoUpdate);
+ autoUpdate.setShortcut(QKeySequence(Qt::Key_A));
+
+ // Copy to clipboard / save
+ QAction save(QLatin1String("Save as image"), &menu);
+ save.setShortcut(QKeySequence(QLatin1String("Ctrl+S")));
+ connect(&save, SIGNAL(triggered()), this, SLOT(saveToFile()));
+ QAction copy(QLatin1String("Copy to clipboard"), &menu);
+ copy.setShortcut(QKeySequence(QLatin1String("Ctrl+C")));
+ connect(&copy, SIGNAL(triggered()), this, SLOT(copyToClipboard()));
+
+ menu.addAction(&title);
+ menu.addSeparator();
+ menu.addAction(&whiteGrid);
+ menu.addAction(&blackGrid);
+ menu.addAction(&noGrid);
+ menu.addSeparator();
+ menu.addAction(&incrGrid);
+ menu.addAction(&decrGrid);
+ menu.addSeparator();
+ menu.addAction(&incrZoom);
+ menu.addAction(&decrZoom);
+ menu.addSeparator();
+ menu.addAction(&freeze);
+ menu.addAction(&autoUpdate);
+ menu.addSeparator();
+ menu.addAction(&save);
+ menu.addAction(&copy);
+
+ menu.exec(mapToGlobal(e->pos()));
+
+ // Read out grid settings
+ if (noGrid.isChecked()) m_gridActive = 0;
+ else if (blackGrid.isChecked()) m_gridActive = 1;
+ else m_gridActive = 2;
+
+ m_autoUpdate = autoUpdate.isChecked();
+ tmpFreeze = freeze.isChecked();
+
+
+ m_freeze = tmpFreeze;
+}
+
+QSize QPixelTool::sizeHint() const
+{
+ return m_initialSize;
+}
+
+void QPixelTool::grabScreen()
+{
+ if (m_preview_mode) {
+ int w = qMin(width() / m_zoom + 1, m_preview_image.width());
+ int h = qMin(height() / m_zoom + 1, m_preview_image.height());
+ m_buffer = QPixmap::fromImage(m_preview_image).copy(0, 0, w, h);
+ update();
+ return;
+ }
+
+ QPoint mousePos = QCursor::pos();
+ if (mousePos == m_lastMousePos && !m_autoUpdate)
+ return;
+
+ int w = int(width() / float(m_zoom));
+ int h = int(height() / float(m_zoom));
+
+ if (width() % m_zoom > 0)
+ ++w;
+ if (height() % m_zoom > 0)
+ ++h;
+
+ int x = mousePos.x() - w/2;
+ int y = mousePos.y() - h/2;
+
+ m_buffer = QPixmap::grabWindow(qApp->desktop()->winId(), x, y, w, h);
+
+ QRegion geom(x, y, w, h);
+ QRect screenRect;
+ for (int i=0; i<qApp->desktop()->numScreens(); ++i)
+ screenRect |= qApp->desktop()->screenGeometry(i);
+ geom -= screenRect;
+ QVector<QRect> rects = geom.rects();
+ if (rects.size() > 0) {
+ QPainter p(&m_buffer);
+ p.translate(-x, -y);
+ p.setPen(Qt::NoPen);
+ p.setBrush(palette().color(QPalette::Dark));
+ p.drawRects(rects);
+ }
+
+ update();
+
+ m_lastMousePos = mousePos;
+}
+
+void QPixelTool::startZoomVisibleTimer()
+{
+ if (m_displayZoomId > 0) {
+ killTimer(m_displayZoomId);
+ }
+ m_displayZoomId = startTimer(5000);
+ setZoomVisible(true);
+}
+
+void QPixelTool::startGridSizeVisibleTimer()
+{
+ if (m_gridActive) {
+ if (m_displayGridSizeId > 0)
+ killTimer(m_displayGridSizeId);
+ m_displayGridSizeId = startTimer(5000);
+ m_displayGridSize = true;
+ update();
+ }
+}
+
+void QPixelTool::setZoomVisible(bool visible)
+{
+ m_displayZoom = visible;
+ update();
+}
+
+void QPixelTool::toggleFreeze()
+{
+ m_freeze = !m_freeze;
+ if (!m_freeze)
+ m_dragStart = m_dragCurrent = QPoint();
+}
+
+void QPixelTool::setZoom(int zoom)
+{
+ if (zoom > 0) {
+ QPoint pos = m_lastMousePos;
+ m_lastMousePos = QPoint();
+ m_zoom = zoom;
+ grabScreen();
+ m_lastMousePos = pos;
+ m_dragStart = m_dragCurrent = QPoint();
+ startZoomVisibleTimer();
+ }
+}
+
+void QPixelTool::toggleGrid()
+{
+ if (++m_gridActive > 2)
+ m_gridActive = 0;
+ update();
+}
+
+void QPixelTool::setGridSize(int gridSize)
+{
+ if (m_gridActive && gridSize > 0) {
+ m_gridSize = gridSize;
+ startGridSizeVisibleTimer();
+ update();
+ }
+}
+
+void QPixelTool::copyToClipboard()
+{
+ QClipboard *cb = QApplication::clipboard();
+ cb->setPixmap(m_buffer);
+}
+
+void QPixelTool::saveToFile()
+{
+ bool oldFreeze = m_freeze;
+ m_freeze = true;
+ QString name = QFileDialog::getSaveFileName(this, QLatin1String("Save as image"), QString(), QLatin1String("*.png"));
+ if (!name.isEmpty()) {
+ if (!name.endsWith(QLatin1String(".png")))
+ name.append(QLatin1String(".png"));
+ m_buffer.save(name, "PNG");
+ }
+ m_freeze = oldFreeze;
+}
+
+QT_END_NAMESPACE
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