17 #include "organicgrid.h"
19 #pragma GCC diagnostic push
20 #pragma GCC diagnostic ignored "-pedantic"
21 #include <private/qquickitem_p.h>
22 #pragma GCC diagnostic pop
24 OrganicGrid::OrganicGrid()
25 : m_firstVisibleIndex(-1)
26 , m_numberOfModulesPerRow(-1)
30 QSizeF OrganicGrid::smallDelegateSize()
const
32 return m_smallDelegateSize;
35 void OrganicGrid::setSmallDelegateSize(
const QSizeF &size)
37 if (m_smallDelegateSize != size) {
38 m_smallDelegateSize = size;
39 Q_EMIT smallDelegateSizeChanged();
41 if (isComponentComplete()) {
47 QSizeF OrganicGrid::bigDelegateSize()
const
49 return m_bigDelegateSize;
52 void OrganicGrid::setBigDelegateSize(
const QSizeF &size)
54 if (m_bigDelegateSize != size) {
55 m_bigDelegateSize = size;
56 Q_EMIT bigDelegateSizeChanged();
58 if (isComponentComplete()) {
64 QPointF OrganicGrid::positionForIndex(
int modelIndex)
const
66 const qreal moduleHeight = m_smallDelegateSize.height() + rowSpacing() + m_bigDelegateSize.height();
67 const qreal moduleWidth = m_smallDelegateSize.width() * 2 + columnSpacing() * 2 + m_bigDelegateSize.width();
68 const int itemsPerRow = m_numberOfModulesPerRow * 6;
69 const int rowIndex = floor(modelIndex / itemsPerRow);
70 const int columnIndex = floor((modelIndex - rowIndex * itemsPerRow) / 6);
72 qreal yPos = (moduleHeight + rowSpacing()) * rowIndex;
73 const int moduleIndex = modelIndex % 6;
74 if (moduleIndex == 2) {
75 yPos += m_smallDelegateSize.height() + rowSpacing();
76 }
else if (moduleIndex == 3 || moduleIndex == 5) {
77 yPos += m_bigDelegateSize.height() + rowSpacing();
80 qreal xPos = (moduleWidth + columnSpacing()) * columnIndex;
81 if (moduleIndex == 1) {
82 xPos += m_smallDelegateSize.width() + columnSpacing();
83 }
else if (moduleIndex == 3) {
84 xPos += m_bigDelegateSize.width() + columnSpacing();
85 }
else if (moduleIndex == 4) {
86 xPos += (m_smallDelegateSize.width() + columnSpacing()) * 2;
87 }
else if (moduleIndex == 5) {
88 xPos += m_bigDelegateSize.width() + m_smallDelegateSize.width() + columnSpacing() * 2;
91 return QPointF(xPos, yPos);
94 QSizeF OrganicGrid::sizeForIndex(
int modelIndex)
const
96 const int moduleIndex = modelIndex % 6;
97 if (moduleIndex == 0 || moduleIndex == 1 || moduleIndex == 3 || moduleIndex == 5) {
98 return m_smallDelegateSize;
100 return m_bigDelegateSize;
104 void OrganicGrid::findBottomModelIndexToAdd(
int *modelIndex, qreal *yPos)
106 if (m_visibleItems.isEmpty()) {
110 *modelIndex = m_firstVisibleIndex + m_visibleItems.count();
113 const int firstModuleIndex = ((*modelIndex) / 6) * 6;
114 *yPos = positionForIndex(firstModuleIndex).y();
118 void OrganicGrid::findTopModelIndexToAdd(
int *modelIndex, qreal *yPos)
120 if (m_visibleItems.isEmpty()) {
124 *modelIndex = m_firstVisibleIndex - 1;
127 const int lastModuleIndex = ((*modelIndex) / 6) * 6 + 5;
128 *yPos = positionForIndex(lastModuleIndex).y();
129 *yPos += sizeForIndex(lastModuleIndex).height();
133 void OrganicGrid::addItemToView(
int modelIndex, QQuickItem *item)
136 if (modelIndex == m_firstVisibleIndex + m_visibleItems.count()) {
137 m_visibleItems << item;
138 }
else if (modelIndex == m_firstVisibleIndex - 1) {
139 m_firstVisibleIndex = modelIndex;
140 m_visibleItems.prepend(item);
141 }
else if (modelIndex == 0) {
142 m_firstVisibleIndex = 0;
143 m_visibleItems << item;
145 qWarning() <<
"OrganicGrid::addItemToView - Got unexpected modelIndex"
146 << modelIndex << m_firstVisibleIndex << m_visibleItems.count();
150 const QPointF pos = positionForIndex(modelIndex);
151 item->setPosition(pos);
153 item->setSize(sizeForIndex(modelIndex));
156 bool OrganicGrid::removeNonVisibleItems(qreal bufferFromY, qreal bufferToY)
158 bool changed =
false;
161 int lastModuleIndex = (m_firstVisibleIndex / 6) * 6 + 5;
162 bool removeIndex = positionForIndex(lastModuleIndex).y() + sizeForIndex(lastModuleIndex).height() < bufferFromY;
163 while (removeIndex && !m_visibleItems.isEmpty()) {
164 releaseItem(m_visibleItems.takeFirst());
166 m_firstVisibleIndex++;
168 lastModuleIndex = (m_firstVisibleIndex / 6) * 6 + 5;
169 removeIndex = positionForIndex(lastModuleIndex).y() + sizeForIndex(lastModuleIndex).height() < bufferFromY;
172 int firstModuleIndex = ((m_firstVisibleIndex + m_visibleItems.count() - 1) / 6) * 6;
173 removeIndex = positionForIndex(firstModuleIndex).y() > bufferToY;
174 while (removeIndex && !m_visibleItems.isEmpty()) {
175 releaseItem(m_visibleItems.takeLast());
178 firstModuleIndex = ((m_firstVisibleIndex + m_visibleItems.count() - 1) / 6) * 6;
179 removeIndex = positionForIndex(firstModuleIndex).y() > bufferToY;
182 if (m_visibleItems.isEmpty()) {
183 m_firstVisibleIndex = -1;
189 void OrganicGrid::cleanupExistingItems()
191 Q_FOREACH(QQuickItem *item, m_visibleItems)
193 m_visibleItems.clear();
194 m_firstVisibleIndex = -1;
195 setImplicitHeightDirty();
200 const qreal moduleWidth = m_smallDelegateSize.width() * 2 + columnSpacing() * 2 + m_bigDelegateSize.width();
201 m_numberOfModulesPerRow = floor((width() + columnSpacing()) / (moduleWidth + columnSpacing()));
202 m_numberOfModulesPerRow = qMax(1, m_numberOfModulesPerRow);
204 int i = m_firstVisibleIndex;
205 const QList<QQuickItem*> allItems = m_visibleItems;
206 m_visibleItems.clear();
207 Q_FOREACH(QQuickItem *item, allItems) {
208 addItemToView(i, item);
213 void OrganicGrid::updateItemCulling(qreal visibleFromY, qreal visibleToY)
215 Q_FOREACH(QQuickItem *item, m_visibleItems) {
216 QQuickItemPrivate::get(item)->setCulled(item->y() + item->height() <= visibleFromY || item->y() >= visibleToY);
220 void OrganicGrid::calculateImplicitHeight()
222 const qreal moduleHeight = m_smallDelegateSize.height() + rowSpacing() + m_bigDelegateSize.height();
223 const int itemCount = !model() ? 0 : model()->rowCount();
224 const int itemsPerRow = m_numberOfModulesPerRow * 6;
225 const int fullRows = floor(itemCount / itemsPerRow);
226 const qreal fullRowsHeight = fullRows == 0 ? 0 : fullRows * moduleHeight + rowSpacing() * (fullRows - 1);
228 const int remainingItems = itemCount - fullRows * itemsPerRow;
229 if (remainingItems == 0) {
230 setImplicitHeight(fullRowsHeight);
231 }
else if (remainingItems <= 2) {
232 setImplicitHeight(fullRowsHeight + m_smallDelegateSize.height() + rowSpacing());
234 setImplicitHeight(fullRowsHeight + rowSpacing() + moduleHeight);
238 void OrganicGrid::processModelRemoves(
const QVector<QQmlChangeSet::Change> &removes)
240 Q_FOREACH(
const QQmlChangeSet::Change &
remove, removes) {
241 for (
int i =
remove.count - 1; i >= 0; --i) {
242 const int indexToRemove =
remove.index + i;
244 const int lastIndex = m_firstVisibleIndex + m_visibleItems.count() - 1;
245 if (indexToRemove == lastIndex) {
246 releaseItem(m_visibleItems.takeLast());
248 if (indexToRemove < lastIndex) {
249 qFatal(
"OrganicGrid only supports removal from the end of the model");
254 if (m_visibleItems.isEmpty()) {
255 m_firstVisibleIndex = -1;
257 setImplicitHeightDirty();