--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/designer/src/lib/shared/grid.cpp Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,186 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Designer 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 "grid_p.h"
+
+#include <QtCore/QString>
+#include <QtCore/QVector>
+#include <QtGui/QPainter>
+#include <QtGui/QWidget>
+#include <QtGui/qevent.h>
+
+QT_BEGIN_NAMESPACE
+
+static const bool defaultSnap = true;
+static const bool defaultVisible = true;
+static const int DEFAULT_GRID = 10;
+static const char* KEY_VISIBLE = "gridVisible";
+static const char* KEY_SNAPX = "gridSnapX";
+static const char* KEY_SNAPY = "gridSnapY";
+static const char* KEY_DELTAX = "gridDeltaX";
+static const char* KEY_DELTAY = "gridDeltaY";
+
+// Insert a value into the serialization map unless default
+template <class T>
+ static inline void valueToVariantMap(T value, T defaultValue, const QString &key, QVariantMap &v, bool forceKey) {
+ if (forceKey || value != defaultValue)
+ v.insert(key, QVariant(value));
+ }
+
+// Obtain a value form QVariantMap
+template <class T>
+ static inline bool valueFromVariantMap(const QVariantMap &v, const QString &key, T &value) {
+ const QVariantMap::const_iterator it = v.constFind(key);
+ const bool found = it != v.constEnd();
+ if (found)
+ value = qVariantValue<T>(it.value());
+ return found;
+ }
+
+namespace qdesigner_internal
+{
+
+Grid::Grid() :
+ m_visible(defaultVisible),
+ m_snapX(defaultSnap),
+ m_snapY(defaultSnap),
+ m_deltaX(DEFAULT_GRID),
+ m_deltaY(DEFAULT_GRID)
+{
+}
+
+bool Grid::fromVariantMap(const QVariantMap& vm)
+{
+ *this = Grid();
+ valueFromVariantMap(vm, QLatin1String(KEY_VISIBLE), m_visible);
+ valueFromVariantMap(vm, QLatin1String(KEY_SNAPX), m_snapX);
+ valueFromVariantMap(vm, QLatin1String(KEY_SNAPY), m_snapY);
+ valueFromVariantMap(vm, QLatin1String(KEY_DELTAX), m_deltaX);
+ return valueFromVariantMap(vm, QLatin1String(KEY_DELTAY), m_deltaY);
+}
+
+QVariantMap Grid::toVariantMap(bool forceKeys) const
+{
+ QVariantMap rc;
+ addToVariantMap(rc, forceKeys);
+ return rc;
+}
+
+void Grid::addToVariantMap(QVariantMap& vm, bool forceKeys) const
+{
+ valueToVariantMap(m_visible, defaultVisible, QLatin1String(KEY_VISIBLE), vm, forceKeys);
+ valueToVariantMap(m_snapX, defaultSnap, QLatin1String(KEY_SNAPX), vm, forceKeys);
+ valueToVariantMap(m_snapY, defaultSnap, QLatin1String(KEY_SNAPY), vm, forceKeys);
+ valueToVariantMap(m_deltaX, DEFAULT_GRID, QLatin1String(KEY_DELTAX), vm, forceKeys);
+ valueToVariantMap(m_deltaY, DEFAULT_GRID, QLatin1String(KEY_DELTAY), vm, forceKeys);
+}
+
+void Grid::paint(QWidget *widget, QPaintEvent *e) const
+{
+ QPainter p(widget);
+ paint(p, widget, e);
+}
+
+void Grid::paint(QPainter &p, const QWidget *widget, QPaintEvent *e) const
+{
+ p.setPen(widget->palette().dark().color());
+
+ if (m_visible) {
+ const int xstart = (e->rect().x() / m_deltaX) * m_deltaX;
+ const int ystart = (e->rect().y() / m_deltaY) * m_deltaY;
+
+ const int xend = e->rect().right();
+ const int yend = e->rect().bottom();
+
+ typedef QVector<QPointF> Points;
+ static Points points;
+ points.clear();
+
+ for (int x = xstart; x <= xend; x += m_deltaX) {
+ points.reserve((yend - ystart) / m_deltaY + 1);
+ for (int y = ystart; y <= yend; y += m_deltaY)
+ points.push_back(QPointF(x, y));
+ p.drawPoints( &(*points.begin()), points.count());
+ points.clear();
+ }
+ }
+}
+
+int Grid::snapValue(int value, int grid) const
+{
+ const int rest = value % grid;
+ const int absRest = (rest < 0) ? -rest : rest;
+ int offset = 0;
+ if (2 * absRest > grid)
+ offset = 1;
+ if (rest < 0)
+ offset *= -1;
+ return (value / grid + offset) * grid;
+}
+
+QPoint Grid::snapPoint(const QPoint &p) const
+{
+ const int sx = m_snapX ? snapValue(p.x(), m_deltaX) : p.x();
+ const int sy = m_snapY ? snapValue(p.y(), m_deltaY) : p.y();
+ return QPoint(sx, sy);
+}
+
+int Grid::widgetHandleAdjustX(int x) const
+{
+ return m_snapX ? (x / m_deltaX) * m_deltaX + 1 : x;
+}
+
+int Grid::widgetHandleAdjustY(int y) const
+{
+ return m_snapY ? (y / m_deltaY) * m_deltaY + 1 : y;
+}
+
+bool Grid::equals(const Grid &rhs) const
+{
+ return m_visible == rhs.m_visible &&
+ m_snapX == rhs.m_snapX &&
+ m_snapY == rhs.m_snapY &&
+ m_deltaX == rhs.m_deltaX &&
+ m_deltaY == rhs.m_deltaY;
+}
+}
+
+QT_END_NAMESPACE