1/***************************************************************************
2 * Copyright (C) 2012 by Peter Penz <peter.penz19@gmail.com> *
3 * *
4 * This program is free software; you can redistribute it and/or modify *
5 * it under the terms of the GNU General Public License as published by *
6 * the Free Software Foundation; either version 2 of the License, or *
7 * (at your option) any later version. *
8 * *
9 * This program is distributed in the hope that it will be useful, *
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
12 * GNU General Public License for more details. *
13 * *
14 * You should have received a copy of the GNU General Public License *
15 * along with this program; if not, write to the *
16 * Free Software Foundation, Inc., *
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
18 ***************************************************************************/
19
20#include "kstandarditemlistwidget.h"
21
22#include "kfileitemlistview.h"
23#include "kfileitemmodel.h"
24
25#include <KIcon>
26#include <KIconEffect>
27#include <KIconLoader>
28#include <KLocale>
29#include <kratingpainter.h>
30#include <KStringHandler>
31#include <KDebug>
32
33#include "private/kfileitemclipboard.h"
34#include "private/kitemlistroleeditor.h"
35#include "private/kpixmapmodifier.h"
36
37#include <QFontMetricsF>
38#include <QGraphicsScene>
39#include <QGraphicsSceneResizeEvent>
40#include <QGraphicsView>
41#include <QPainter>
42#include <QStyleOption>
43#include <QTextLayout>
44#include <QTextLine>
45#include <QPixmapCache>
46
47// #define KSTANDARDITEMLISTWIDGET_DEBUG
48
49KStandardItemListWidgetInformant::KStandardItemListWidgetInformant() :
50 KItemListWidgetInformant()
51{
52}
53
54KStandardItemListWidgetInformant::~KStandardItemListWidgetInformant()
55{
56}
57
58void KStandardItemListWidgetInformant::calculateItemSizeHints(QVector<qreal>& logicalHeightHints, qreal& logicalWidthHint, const KItemListView* view) const
59{
60 switch (static_cast<const KStandardItemListView*>(view)->itemLayout()) {
61 case KStandardItemListWidget::IconsLayout:
62 calculateIconsLayoutItemSizeHints(logicalHeightHints, logicalWidthHint, view);
63 break;
64
65 case KStandardItemListWidget::CompactLayout:
66 calculateCompactLayoutItemSizeHints(logicalHeightHints, logicalWidthHint, view);
67 break;
68
69 case KStandardItemListWidget::DetailsLayout:
70 calculateDetailsLayoutItemSizeHints(logicalHeightHints, logicalWidthHint, view);
71 break;
72
73 default:
74 Q_ASSERT(false);
75 break;
76 }
77}
78
79qreal KStandardItemListWidgetInformant::preferredRoleColumnWidth(const QByteArray& role,
80 int index,
81 const KItemListView* view) const
82{
83 const QHash<QByteArray, QVariant> values = view->model()->data(index);
84 const KItemListStyleOption& option = view->styleOption();
85
86 const QString text = roleText(role, values);
87 qreal width = KStandardItemListWidget::columnPadding(option);
88
89 const QFontMetrics& normalFontMetrics = option.fontMetrics;
90 const QFontMetrics linkFontMetrics(customizedFontForLinks(option.font));
91
92 if (role == "rating") {
93 width += KStandardItemListWidget::preferredRatingSize(option).width();
94 } else {
95 // If current item is a link, we use the customized link font metrics instead of the normal font metrics.
96 const QFontMetrics& fontMetrics = itemIsLink(index, view) ? linkFontMetrics : normalFontMetrics;
97
98 width += fontMetrics.width(text);
99
100 if (role == "text") {
101 if (view->supportsItemExpanding()) {
102 // Increase the width by the expansion-toggle and the current expansion level
103 const int expandedParentsCount = values.value("expandedParentsCount", 0).toInt();
104 const qreal height = option.padding * 2 + qMax(option.iconSize, fontMetrics.height());
105 width += (expandedParentsCount + 1) * height;
106 }
107
108 // Increase the width by the required space for the icon
109 width += option.padding * 2 + option.iconSize;
110 }
111 }
112
113 return width;
114}
115
116QString KStandardItemListWidgetInformant::itemText(int index, const KItemListView* view) const
117{
118 return view->model()->data(index).value("text").toString();
119}
120
121bool KStandardItemListWidgetInformant::itemIsLink(int index, const KItemListView* view) const
122{
123 return false;
124}
125
126QString KStandardItemListWidgetInformant::roleText(const QByteArray& role,
127 const QHash<QByteArray, QVariant>& values) const
128{
129 if (role == "rating") {
130 // Always use an empty text, as the rating is shown by the image m_rating.
131 return QString();
132 }
133 return values.value(role).toString();
134}
135
136QFont KStandardItemListWidgetInformant::customizedFontForLinks(const QFont& baseFont) const
137{
138 return baseFont;
139}
140
141void KStandardItemListWidgetInformant::calculateIconsLayoutItemSizeHints(QVector<qreal>& logicalHeightHints, qreal& logicalWidthHint, const KItemListView* view) const
142{
143 const KItemListStyleOption& option = view->styleOption();
144 const QFont& normalFont = option.font;
145 const int additionalRolesCount = qMax(view->visibleRoles().count() - 1, 0);
146
147 const qreal itemWidth = view->itemSize().width();
148 const qreal maxWidth = itemWidth - 2 * option.padding;
149 const qreal additionalRolesSpacing = additionalRolesCount * option.fontMetrics.lineSpacing();
150 const qreal spacingAndIconHeight = option.iconSize + option.padding * 3;
151
152 const QFont linkFont = customizedFontForLinks(normalFont);
153
154 QTextOption textOption(Qt::AlignHCenter);
155 textOption.setWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);
156
157 for (int index = 0; index < logicalHeightHints.count(); ++index) {
158 if (logicalHeightHints.at(index) > 0.0) {
159 continue;
160 }
161
162 // If the current item is a link, we use the customized link font instead of the normal font.
163 const QFont& font = itemIsLink(index, view) ? linkFont : normalFont;
164
165 const QString& text = KStringHandler::preProcessWrap(itemText(index, view));
166
167 // Calculate the number of lines required for wrapping the name
168 qreal textHeight = 0;
169 QTextLayout layout(text, font);
170 layout.setTextOption(textOption);
171 layout.beginLayout();
172 QTextLine line;
173 int lineCount = 0;
174 while ((line = layout.createLine()).isValid()) {
175 line.setLineWidth(maxWidth);
176 line.naturalTextWidth();
177 textHeight += line.height();
178
179 ++lineCount;
180 if (lineCount == option.maxTextLines) {
181 break;
182 }
183 }
184 layout.endLayout();
185
186 // Add one line for each additional information
187 textHeight += additionalRolesSpacing;
188
189 logicalHeightHints[index] = textHeight + spacingAndIconHeight;
190 }
191
192 logicalWidthHint = itemWidth;
193}
194
195void KStandardItemListWidgetInformant::calculateCompactLayoutItemSizeHints(QVector<qreal>& logicalHeightHints, qreal& logicalWidthHint, const KItemListView* view) const
196{
197 const KItemListStyleOption& option = view->styleOption();
198 const QFontMetrics& normalFontMetrics = option.fontMetrics;
199 const int additionalRolesCount = qMax(view->visibleRoles().count() - 1, 0);
200
201 const QList<QByteArray>& visibleRoles = view->visibleRoles();
202 const bool showOnlyTextRole = (visibleRoles.count() == 1) && (visibleRoles.first() == "text");
203 const qreal maxWidth = option.maxTextWidth;
204 const qreal paddingAndIconWidth = option.padding * 4 + option.iconSize;
205 const qreal height = option.padding * 2 + qMax(option.iconSize, (1 + additionalRolesCount) * normalFontMetrics.lineSpacing());
206
207 const QFontMetrics linkFontMetrics(customizedFontForLinks(option.font));
208
209 for (int index = 0; index < logicalHeightHints.count(); ++index) {
210 if (logicalHeightHints.at(index) > 0.0) {
211 continue;
212 }
213
214 // If the current item is a link, we use the customized link font metrics instead of the normal font metrics.
215 const QFontMetrics& fontMetrics = itemIsLink(index, view) ? linkFontMetrics : normalFontMetrics;
216
217 // For each row exactly one role is shown. Calculate the maximum required width that is necessary
218 // to show all roles without horizontal clipping.
219 qreal maximumRequiredWidth = 0.0;
220
221 if (showOnlyTextRole) {
222 maximumRequiredWidth = fontMetrics.width(itemText(index, view));
223 } else {
224 const QHash<QByteArray, QVariant>& values = view->model()->data(index);
225 foreach (const QByteArray& role, visibleRoles) {
226 const QString& text = roleText(role, values);
227 const qreal requiredWidth = fontMetrics.width(text);
228 maximumRequiredWidth = qMax(maximumRequiredWidth, requiredWidth);
229 }
230 }
231
232 qreal width = paddingAndIconWidth + maximumRequiredWidth;
233 if (maxWidth > 0 && width > maxWidth) {
234 width = maxWidth;
235 }
236
237 logicalHeightHints[index] = width;
238 }
239
240 logicalWidthHint = height;
241}
242
243void KStandardItemListWidgetInformant::calculateDetailsLayoutItemSizeHints(QVector<qreal>& logicalHeightHints, qreal& logicalWidthHint, const KItemListView* view) const
244{
245 const KItemListStyleOption& option = view->styleOption();
246 const qreal height = option.padding * 2 + qMax(option.iconSize, option.fontMetrics.height());
247 logicalHeightHints.fill(height);
248 logicalWidthHint = -1.0;
249}
250
251KStandardItemListWidget::KStandardItemListWidget(KItemListWidgetInformant* informant, QGraphicsItem* parent) :
252 KItemListWidget(informant, parent),
253 m_isCut(false),
254 m_isHidden(false),
255 m_customizedFont(),
256 m_customizedFontMetrics(m_customizedFont),
257 m_isExpandable(false),
258 m_supportsItemExpanding(false),
259 m_dirtyLayout(true),
260 m_dirtyContent(true),
261 m_dirtyContentRoles(),
262 m_layout(IconsLayout),
263 m_pixmapPos(),
264 m_pixmap(),
265 m_scaledPixmapSize(),
266 m_iconRect(),
267 m_hoverPixmap(),
268 m_textInfo(),
269 m_textRect(),
270 m_sortedVisibleRoles(),
271 m_expansionArea(),
272 m_customTextColor(),
273 m_additionalInfoTextColor(),
274 m_overlay(),
275 m_rating(),
276 m_roleEditor(0),
277 m_oldRoleEditor(0)
278{
279}
280
281KStandardItemListWidget::~KStandardItemListWidget()
282{
283 qDeleteAll(m_textInfo);
284 m_textInfo.clear();
285
286 if (m_roleEditor) {
287 m_roleEditor->deleteLater();
288 }
289
290 if (m_oldRoleEditor) {
291 m_oldRoleEditor->deleteLater();
292 }
293}
294
295void KStandardItemListWidget::setLayout(Layout layout)
296{
297 if (m_layout != layout) {
298 m_layout = layout;
299 m_dirtyLayout = true;
300 updateAdditionalInfoTextColor();
301 update();
302 }
303}
304
305KStandardItemListWidget::Layout KStandardItemListWidget::layout() const
306{
307 return m_layout;
308}
309
310void KStandardItemListWidget::setSupportsItemExpanding(bool supportsItemExpanding)
311{
312 if (m_supportsItemExpanding != supportsItemExpanding) {
313 m_supportsItemExpanding = supportsItemExpanding;
314 m_dirtyLayout = true;
315 update();
316 }
317}
318
319bool KStandardItemListWidget::supportsItemExpanding() const
320{
321 return m_supportsItemExpanding;
322}
323
324void KStandardItemListWidget::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)
325{
326 const_cast<KStandardItemListWidget*>(this)->triggerCacheRefreshing();
327
328 KItemListWidget::paint(painter, option, widget);
329
330 if (!m_expansionArea.isEmpty()) {
331 drawSiblingsInformation(painter);
332 }
333
334 const KItemListStyleOption& itemListStyleOption = styleOption();
335 if (isHovered()) {
336 if (hoverOpacity() < 1.0) {
337 /*
338 * Linear interpolation between m_pixmap and m_hoverPixmap.
339 *
340 * Note that this cannot be achieved by painting m_hoverPixmap over
341 * m_pixmap, even if the opacities are adjusted. For details see
342 * https://git.reviewboard.kde.org/r/109614/
343 */
344 // Paint pixmap1 so that pixmap1 = m_pixmap * (1.0 - hoverOpacity())
345 QPixmap pixmap1(m_pixmap.size());
346 pixmap1.fill(Qt::transparent);
347 {
348 QPainter p(&pixmap1);
349 p.setOpacity(1.0 - hoverOpacity());
350 p.drawPixmap(0, 0, m_pixmap);
351 }
352
353 // Paint pixmap2 so that pixmap2 = m_hoverPixmap * hoverOpacity()
354 QPixmap pixmap2(pixmap1.size());
355 pixmap2.fill(Qt::transparent);
356 {
357 QPainter p(&pixmap2);
358 p.setOpacity(hoverOpacity());
359 p.drawPixmap(0, 0, m_hoverPixmap);
360 }
361
362 // Paint pixmap2 on pixmap1 using CompositionMode_Plus
363 // Now pixmap1 = pixmap2 + m_pixmap * (1.0 - hoverOpacity())
364 // = m_hoverPixmap * hoverOpacity() + m_pixmap * (1.0 - hoverOpacity())
365 {
366 QPainter p(&pixmap1);
367 p.setCompositionMode(QPainter::CompositionMode_Plus);
368 p.drawPixmap(0, 0, pixmap2);
369 }
370
371 // Finally paint pixmap1 on the widget
372 drawPixmap(painter, pixmap1);
373 } else {
374 drawPixmap(painter, m_hoverPixmap);
375 }
376 } else {
377 drawPixmap(painter, m_pixmap);
378 }
379
380 painter->setFont(m_customizedFont);
381 painter->setPen(textColor());
382 const TextInfo* textInfo = m_textInfo.value("text");
383
384 if (!textInfo) {
385 // It seems that we can end up here even if m_textInfo does not contain
386 // the key "text", see bug 306167. According to triggerCacheRefreshing(),
387 // this can only happen if the index is negative. This can happen when
388 // the item is about to be removed, see KItemListView::slotItemsRemoved().
389 // TODO: try to reproduce the crash and find a better fix.
390 return;
391 }
392
393 painter->drawStaticText(textInfo->pos, textInfo->staticText);
394
395 bool clipAdditionalInfoBounds = false;
396 if (m_supportsItemExpanding) {
397 // Prevent a possible overlapping of the additional-information texts
398 // with the icon. This can happen if the user has minimized the width
399 // of the name-column to a very small value.
400 const qreal minX = m_pixmapPos.x() + m_pixmap.width() + 4 * itemListStyleOption.padding;
401 if (textInfo->pos.x() + columnWidth("text") > minX) {
402 clipAdditionalInfoBounds = true;
403 painter->save();
404 painter->setClipRect(minX, 0, size().width() - minX, size().height(), Qt::IntersectClip);
405 }
406 }
407
408 painter->setPen(m_additionalInfoTextColor);
409 painter->setFont(m_customizedFont);
410
411 for (int i = 1; i < m_sortedVisibleRoles.count(); ++i) {
412 const TextInfo* textInfo = m_textInfo.value(m_sortedVisibleRoles[i]);
413 painter->drawStaticText(textInfo->pos, textInfo->staticText);
414 }
415
416 if (!m_rating.isNull()) {
417 const TextInfo* ratingTextInfo = m_textInfo.value("rating");
418 QPointF pos = ratingTextInfo->pos;
419 const Qt::Alignment align = ratingTextInfo->staticText.textOption().alignment();
420 if (align & Qt::AlignHCenter) {
421 pos.rx() += (size().width() - m_rating.width()) / 2 - 2;
422 }
423 painter->drawPixmap(pos, m_rating);
424 }
425
426 if (clipAdditionalInfoBounds) {
427 painter->restore();
428 }
429
430#ifdef KSTANDARDITEMLISTWIDGET_DEBUG
431 painter->setBrush(Qt::NoBrush);
432 painter->setPen(Qt::green);
433 painter->drawRect(m_iconRect);
434
435 painter->setPen(Qt::blue);
436 painter->drawRect(m_textRect);
437
438 painter->setPen(Qt::red);
439 painter->drawText(QPointF(0, m_customizedFontMetrics.height()), QString::number(index()));
440 painter->drawRect(rect());
441#endif
442}
443
444QRectF KStandardItemListWidget::iconRect() const
445{
446 const_cast<KStandardItemListWidget*>(this)->triggerCacheRefreshing();
447 return m_iconRect;
448}
449
450QRectF KStandardItemListWidget::textRect() const
451{
452 const_cast<KStandardItemListWidget*>(this)->triggerCacheRefreshing();
453 return m_textRect;
454}
455
456QRectF KStandardItemListWidget::textFocusRect() const
457{
458 // In the compact- and details-layout a larger textRect() is returned to be aligned
459 // with the iconRect(). This is useful to have a larger selection/hover-area
460 // when having a quite large icon size but only one line of text. Still the
461 // focus rectangle should be shown as narrow as possible around the text.
462
463 const_cast<KStandardItemListWidget*>(this)->triggerCacheRefreshing();
464
465 switch (m_layout) {
466 case CompactLayout: {
467 QRectF rect = m_textRect;
468 const TextInfo* topText = m_textInfo.value(m_sortedVisibleRoles.first());
469 const TextInfo* bottomText = m_textInfo.value(m_sortedVisibleRoles.last());
470 rect.setTop(topText->pos.y());
471 rect.setBottom(bottomText->pos.y() + bottomText->staticText.size().height());
472 return rect;
473 }
474
475 case DetailsLayout: {
476 QRectF rect = m_textRect;
477 const TextInfo* textInfo = m_textInfo.value(m_sortedVisibleRoles.first());
478 rect.setTop(textInfo->pos.y());
479 rect.setBottom(textInfo->pos.y() + textInfo->staticText.size().height());
480
481 const KItemListStyleOption& option = styleOption();
482 if (option.extendedSelectionRegion) {
483 const QString text = textInfo->staticText.text();
484 rect.setWidth(m_customizedFontMetrics.width(text) + 2 * option.padding);
485 }
486
487 return rect;
488 }
489
490 default:
491 break;
492 }
493
494 return m_textRect;
495}
496
497QRectF KStandardItemListWidget::selectionRect() const
498{
499 const_cast<KStandardItemListWidget*>(this)->triggerCacheRefreshing();
500
501 switch (m_layout) {
502 case IconsLayout:
503 return m_textRect;
504
505 case CompactLayout:
506 case DetailsLayout: {
507 const int padding = styleOption().padding;
508 QRectF adjustedIconRect = iconRect().adjusted(-padding, -padding, padding, padding);
509 return adjustedIconRect | m_textRect;
510 }
511
512 default:
513 Q_ASSERT(false);
514 break;
515 }
516
517 return m_textRect;
518}
519
520QRectF KStandardItemListWidget::expansionToggleRect() const
521{
522 const_cast<KStandardItemListWidget*>(this)->triggerCacheRefreshing();
523 return m_isExpandable ? m_expansionArea : QRectF();
524}
525
526QRectF KStandardItemListWidget::selectionToggleRect() const
527{
528 const_cast<KStandardItemListWidget*>(this)->triggerCacheRefreshing();
529
530 const int iconHeight = styleOption().iconSize;
531
532 int toggleSize = KIconLoader::SizeSmall;
533 if (iconHeight >= KIconLoader::SizeEnormous) {
534 toggleSize = KIconLoader::SizeMedium;
535 } else if (iconHeight >= KIconLoader::SizeLarge) {
536 toggleSize = KIconLoader::SizeSmallMedium;
537 }
538
539 QPointF pos = iconRect().topLeft();
540
541 // If the selection toggle has a very small distance to the
542 // widget borders, the size of the selection toggle will get
543 // increased to prevent an accidental clicking of the item
544 // when trying to hit the toggle.
545 const int widgetHeight = size().height();
546 const int widgetWidth = size().width();
547 const int minMargin = 2;
548
549 if (toggleSize + minMargin * 2 >= widgetHeight) {
550 pos.rx() -= (widgetHeight - toggleSize) / 2;
551 toggleSize = widgetHeight;
552 pos.setY(0);
553 }
554 if (toggleSize + minMargin * 2 >= widgetWidth) {
555 pos.ry() -= (widgetWidth - toggleSize) / 2;
556 toggleSize = widgetWidth;
557 pos.setX(0);
558 }
559
560 return QRectF(pos, QSizeF(toggleSize, toggleSize));
561}
562
563QPixmap KStandardItemListWidget::createDragPixmap(const QStyleOptionGraphicsItem* option,
564 QWidget* widget)
565{
566 QPixmap pixmap = KItemListWidget::createDragPixmap(option, widget);
567 if (m_layout != DetailsLayout) {
568 return pixmap;
569 }
570
571 // Only return the content of the text-column as pixmap
572 const int leftClip = m_pixmapPos.x();
573
574 const TextInfo* textInfo = m_textInfo.value("text");
575 const int rightClip = textInfo->pos.x() +
576 textInfo->staticText.size().width() +
577 2 * styleOption().padding;
578
579 QPixmap clippedPixmap(rightClip - leftClip + 1, pixmap.height());
580 clippedPixmap.fill(Qt::transparent);
581
582 QPainter painter(&clippedPixmap);
583 painter.drawPixmap(-leftClip, 0, pixmap);
584
585 return clippedPixmap;
586}
587
588
589KItemListWidgetInformant* KStandardItemListWidget::createInformant()
590{
591 return new KStandardItemListWidgetInformant();
592}
593
594void KStandardItemListWidget::invalidateCache()
595{
596 m_dirtyLayout = true;
597 m_dirtyContent = true;
598}
599
600void KStandardItemListWidget::refreshCache()
601{
602}
603
604bool KStandardItemListWidget::isRoleRightAligned(const QByteArray& role) const
605{
606 Q_UNUSED(role);
607 return false;
608}
609
610bool KStandardItemListWidget::isHidden() const
611{
612 return false;
613}
614
615QFont KStandardItemListWidget::customizedFont(const QFont& baseFont) const
616{
617 return baseFont;
618}
619
620QPalette::ColorRole KStandardItemListWidget::normalTextColorRole() const
621{
622 return QPalette::Text;
623}
624
625void KStandardItemListWidget::setTextColor(const QColor& color)
626{
627 if (color != m_customTextColor) {
628 m_customTextColor = color;
629 updateAdditionalInfoTextColor();
630 update();
631 }
632}
633
634QColor KStandardItemListWidget::textColor() const
635{
636 if (!isSelected()) {
637 if (m_isHidden) {
638 return m_additionalInfoTextColor;
639 } else if (m_customTextColor.isValid()) {
640 return m_customTextColor;
641 }
642 }
643
644 const QPalette::ColorGroup group = isActiveWindow() ? QPalette::Active : QPalette::Inactive;
645 const QPalette::ColorRole role = isSelected() ? QPalette::HighlightedText : normalTextColorRole();
646 return styleOption().palette.color(group, role);
647}
648
649void KStandardItemListWidget::setOverlay(const QPixmap& overlay)
650{
651 m_overlay = overlay;
652 m_dirtyContent = true;
653 update();
654}
655
656QPixmap KStandardItemListWidget::overlay() const
657{
658 return m_overlay;
659}
660
661
662QString KStandardItemListWidget::roleText(const QByteArray& role,
663 const QHash<QByteArray, QVariant>& values) const
664{
665 return static_cast<const KStandardItemListWidgetInformant*>(informant())->roleText(role, values);
666}
667
668void KStandardItemListWidget::dataChanged(const QHash<QByteArray, QVariant>& current,
669 const QSet<QByteArray>& roles)
670{
671 Q_UNUSED(current);
672
673 m_dirtyContent = true;
674
675 QSet<QByteArray> dirtyRoles;
676 if (roles.isEmpty()) {
677 dirtyRoles = visibleRoles().toSet();
678 } else {
679 dirtyRoles = roles;
680 }
681
682 // The URL might have changed (i.e., if the sort order of the items has
683 // been changed). Therefore, the "is cut" state must be updated.
684 KFileItemClipboard* clipboard = KFileItemClipboard::instance();
685 const KUrl itemUrl = data().value("url").value<KUrl>();
686 m_isCut = clipboard->isCut(itemUrl);
687
688 // The icon-state might depend from other roles and hence is
689 // marked as dirty whenever a role has been changed
690 dirtyRoles.insert("iconPixmap");
691 dirtyRoles.insert("iconName");
692
693 QSetIterator<QByteArray> it(dirtyRoles);
694 while (it.hasNext()) {
695 const QByteArray& role = it.next();
696 m_dirtyContentRoles.insert(role);
697 }
698}
699
700void KStandardItemListWidget::visibleRolesChanged(const QList<QByteArray>& current,
701 const QList<QByteArray>& previous)
702{
703 Q_UNUSED(previous);
704 m_sortedVisibleRoles = current;
705 m_dirtyLayout = true;
706}
707
708void KStandardItemListWidget::columnWidthChanged(const QByteArray& role,
709 qreal current,
710 qreal previous)
711{
712 Q_UNUSED(role);
713 Q_UNUSED(current);
714 Q_UNUSED(previous);
715 m_dirtyLayout = true;
716}
717
718void KStandardItemListWidget::styleOptionChanged(const KItemListStyleOption& current,
719 const KItemListStyleOption& previous)
720{
721 Q_UNUSED(current);
722 Q_UNUSED(previous);
723 updateAdditionalInfoTextColor();
724 m_dirtyLayout = true;
725}
726
727void KStandardItemListWidget::hoveredChanged(bool hovered)
728{
729 Q_UNUSED(hovered);
730 m_dirtyLayout = true;
731}
732
733void KStandardItemListWidget::selectedChanged(bool selected)
734{
735 Q_UNUSED(selected);
736 updateAdditionalInfoTextColor();
737 m_dirtyContent = true;
738}
739
740void KStandardItemListWidget::siblingsInformationChanged(const QBitArray& current, const QBitArray& previous)
741{
742 Q_UNUSED(current);
743 Q_UNUSED(previous);
744 m_dirtyLayout = true;
745}
746
747int KStandardItemListWidget::selectionLength(const QString& text) const
748{
749 return text.length();
750}
751
752void KStandardItemListWidget::editedRoleChanged(const QByteArray& current, const QByteArray& previous)
753{
754 Q_UNUSED(previous);
755
756 QGraphicsView* parent = scene()->views()[0];
757 if (current.isEmpty() || !parent || current != "text") {
758 if (m_roleEditor) {
759 emit roleEditingCanceled(index(), current, data().value(current));
760
761 disconnect(m_roleEditor, SIGNAL(roleEditingCanceled(QByteArray,QVariant)),
762 this, SLOT(slotRoleEditingCanceled(QByteArray,QVariant)));
763 disconnect(m_roleEditor, SIGNAL(roleEditingFinished(QByteArray,QVariant)),
764 this, SLOT(slotRoleEditingFinished(QByteArray,QVariant)));
765
766 if (m_oldRoleEditor) {
767 m_oldRoleEditor->deleteLater();
768 }
769 m_oldRoleEditor = m_roleEditor;
770 m_roleEditor->hide();
771 m_roleEditor = 0;
772 }
773 return;
774 }
775
776 Q_ASSERT(!m_roleEditor);
777
778 const TextInfo* textInfo = m_textInfo.value("text");
779
780 m_roleEditor = new KItemListRoleEditor(parent);
781 m_roleEditor->setRole(current);
782 m_roleEditor->setFont(styleOption().font);
783
784 const QString text = data().value(current).toString();
785 m_roleEditor->setPlainText(text);
786
787 QTextOption textOption = textInfo->staticText.textOption();
788 m_roleEditor->document()->setDefaultTextOption(textOption);
789
790 const int textSelectionLength = selectionLength(text);
791
792 if (textSelectionLength > 0) {
793 QTextCursor cursor = m_roleEditor->textCursor();
794 cursor.movePosition(QTextCursor::StartOfBlock);
795 cursor.movePosition(QTextCursor::NextCharacter, QTextCursor::KeepAnchor, textSelectionLength);
796 m_roleEditor->setTextCursor(cursor);
797 }
798
799 connect(m_roleEditor, SIGNAL(roleEditingCanceled(QByteArray,QVariant)),
800 this, SLOT(slotRoleEditingCanceled(QByteArray,QVariant)));
801 connect(m_roleEditor, SIGNAL(roleEditingFinished(QByteArray,QVariant)),
802 this, SLOT(slotRoleEditingFinished(QByteArray,QVariant)));
803
804 // Adjust the geometry of the editor
805 QRectF rect = roleEditingRect(current);
806 const int frameWidth = m_roleEditor->frameWidth();
807 rect.adjust(-frameWidth, -frameWidth, frameWidth, frameWidth);
808 rect.translate(pos());
809 if (rect.right() > parent->width()) {
810 rect.setWidth(parent->width() - rect.left());
811 }
812 m_roleEditor->setGeometry(rect.toRect());
813 m_roleEditor->show();
814 m_roleEditor->setFocus();
815}
816
817void KStandardItemListWidget::resizeEvent(QGraphicsSceneResizeEvent* event)
818{
819 if (m_roleEditor) {
820 setEditedRole(QByteArray());
821 Q_ASSERT(!m_roleEditor);
822 }
823
824 KItemListWidget::resizeEvent(event);
825
826 m_dirtyLayout = true;
827}
828
829void KStandardItemListWidget::showEvent(QShowEvent* event)
830{
831 KItemListWidget::showEvent(event);
832
833 // Listen to changes of the clipboard to mark the item as cut/uncut
834 KFileItemClipboard* clipboard = KFileItemClipboard::instance();
835
836 const KUrl itemUrl = data().value("url").value<KUrl>();
837 m_isCut = clipboard->isCut(itemUrl);
838
839 connect(clipboard, SIGNAL(cutItemsChanged()),
840 this, SLOT(slotCutItemsChanged()));
841}
842
843void KStandardItemListWidget::hideEvent(QHideEvent* event)
844{
845 disconnect(KFileItemClipboard::instance(), SIGNAL(cutItemsChanged()),
846 this, SLOT(slotCutItemsChanged()));
847
848 KItemListWidget::hideEvent(event);
849}
850
851void KStandardItemListWidget::slotCutItemsChanged()
852{
853 const KUrl itemUrl = data().value("url").value<KUrl>();
854 const bool isCut = KFileItemClipboard::instance()->isCut(itemUrl);
855 if (m_isCut != isCut) {
856 m_isCut = isCut;
857 m_pixmap = QPixmap();
858 m_dirtyContent = true;
859 update();
860 }
861}
862
863void KStandardItemListWidget::slotRoleEditingCanceled(const QByteArray& role,
864 const QVariant& value)
865{
866 closeRoleEditor();
867 emit roleEditingCanceled(index(), role, value);
868 setEditedRole(QByteArray());
869}
870
871void KStandardItemListWidget::slotRoleEditingFinished(const QByteArray& role,
872 const QVariant& value)
873{
874 closeRoleEditor();
875 emit roleEditingFinished(index(), role, value);
876 setEditedRole(QByteArray());
877}
878
879void KStandardItemListWidget::triggerCacheRefreshing()
880{
881 if ((!m_dirtyContent && !m_dirtyLayout) || index() < 0) {
882 return;
883 }
884
885 refreshCache();
886
887 const QHash<QByteArray, QVariant> values = data();
888 m_isExpandable = m_supportsItemExpanding && values["isExpandable"].toBool();
889 m_isHidden = isHidden();
890 m_customizedFont = customizedFont(styleOption().font);
891 m_customizedFontMetrics = QFontMetrics(m_customizedFont);
892
893 updateExpansionArea();
894 updateTextsCache();
895 updatePixmapCache();
896
897 m_dirtyLayout = false;
898 m_dirtyContent = false;
899 m_dirtyContentRoles.clear();
900}
901
902void KStandardItemListWidget::updateExpansionArea()
903{
904 if (m_supportsItemExpanding) {
905 const QHash<QByteArray, QVariant> values = data();
906 const int expandedParentsCount = values.value("expandedParentsCount", 0).toInt();
907 if (expandedParentsCount >= 0) {
908 const KItemListStyleOption& option = styleOption();
909 const qreal widgetHeight = size().height();
910 const qreal inc = (widgetHeight - option.iconSize) / 2;
911 const qreal x = expandedParentsCount * widgetHeight + inc;
912 const qreal y = inc;
913 m_expansionArea = QRectF(x, y, option.iconSize, option.iconSize);
914 return;
915 }
916 }
917
918 m_expansionArea = QRectF();
919}
920
921void KStandardItemListWidget::updatePixmapCache()
922{
923 // Precondition: Requires already updated m_textPos values to calculate
924 // the remaining height when the alignment is vertical.
925
926 const QSizeF widgetSize = size();
927 const bool iconOnTop = (m_layout == IconsLayout);
928 const KItemListStyleOption& option = styleOption();
929 const qreal padding = option.padding;
930
931 const int maxIconWidth = iconOnTop ? widgetSize.width() - 2 * padding : option.iconSize;
932 const int maxIconHeight = option.iconSize;
933
934 const QHash<QByteArray, QVariant> values = data();
935
936 bool updatePixmap = (m_pixmap.width() != maxIconWidth || m_pixmap.height() != maxIconHeight);
937 if (!updatePixmap && m_dirtyContent) {
938 updatePixmap = m_dirtyContentRoles.isEmpty()
939 || m_dirtyContentRoles.contains("iconPixmap")
940 || m_dirtyContentRoles.contains("iconName")
941 || m_dirtyContentRoles.contains("iconOverlays");
942 }
943
944 if (updatePixmap) {
945 m_pixmap = values["iconPixmap"].value<QPixmap>();
946 if (m_pixmap.isNull()) {
947 // Use the icon that fits to the MIME-type
948 QString iconName = values["iconName"].toString();
949 if (iconName.isEmpty()) {
950 // The icon-name has not been not resolved by KFileItemModelRolesUpdater,
951 // use a generic icon as fallback
952 iconName = QLatin1String("unknown");
953 }
954 const QStringList overlays = values["iconOverlays"].toStringList();
955 m_pixmap = pixmapForIcon(iconName, overlays, maxIconHeight);
956 } else if (m_pixmap.width() != maxIconWidth || m_pixmap.height() != maxIconHeight) {
957 // A custom pixmap has been applied. Assure that the pixmap
958 // is scaled to the maximum available size.
959 KPixmapModifier::scale(m_pixmap, QSize(maxIconWidth, maxIconHeight));
960 }
961
962 if (m_isCut) {
963 KIconEffect* effect = KIconLoader::global()->iconEffect();
964 m_pixmap = effect->apply(m_pixmap, KIconLoader::Desktop, KIconLoader::DisabledState);
965 }
966
967 if (m_isHidden) {
968 KIconEffect::semiTransparent(m_pixmap);
969 }
970
971 if (m_layout == IconsLayout && isSelected()) {
972 const QColor color = palette().brush(QPalette::Normal, QPalette::Highlight).color();
973 QImage image = m_pixmap.toImage();
974 KIconEffect::colorize(image, color, 0.8f);
975 m_pixmap = QPixmap::fromImage(image);
976 }
977 }
978
979 if (!m_overlay.isNull()) {
980 QPainter painter(&m_pixmap);
981 painter.drawPixmap(0, m_pixmap.height() - m_overlay.height(), m_overlay);
982 }
983
984 int scaledIconSize = 0;
985 if (iconOnTop) {
986 const TextInfo* textInfo = m_textInfo.value("text");
987 scaledIconSize = static_cast<int>(textInfo->pos.y() - 2 * padding);
988 } else {
989 const int textRowsCount = (m_layout == CompactLayout) ? visibleRoles().count() : 1;
990 const qreal requiredTextHeight = textRowsCount * m_customizedFontMetrics.height();
991 scaledIconSize = (requiredTextHeight < maxIconHeight) ?
992 widgetSize.height() - 2 * padding : maxIconHeight;
993 }
994
995 const int maxScaledIconWidth = iconOnTop ? widgetSize.width() - 2 * padding : scaledIconSize;
996 const int maxScaledIconHeight = scaledIconSize;
997
998 m_scaledPixmapSize = m_pixmap.size();
999 m_scaledPixmapSize.scale(maxScaledIconWidth, maxScaledIconHeight, Qt::KeepAspectRatio);
1000
1001 if (iconOnTop) {
1002 // Center horizontally and align on bottom within the icon-area
1003 m_pixmapPos.setX((widgetSize.width() - m_scaledPixmapSize.width()) / 2);
1004 m_pixmapPos.setY(padding + scaledIconSize - m_scaledPixmapSize.height());
1005 } else {
1006 // Center horizontally and vertically within the icon-area
1007 const TextInfo* textInfo = m_textInfo.value("text");
1008 m_pixmapPos.setX(textInfo->pos.x() - 2 * padding
1009 - (scaledIconSize + m_scaledPixmapSize.width()) / 2);
1010 m_pixmapPos.setY(padding
1011 + (scaledIconSize - m_scaledPixmapSize.height()) / 2);
1012 }
1013
1014 m_iconRect = QRectF(m_pixmapPos, QSizeF(m_scaledPixmapSize));
1015
1016 // Prepare the pixmap that is used when the item gets hovered
1017 if (isHovered()) {
1018 m_hoverPixmap = m_pixmap;
1019 KIconEffect* effect = KIconLoader::global()->iconEffect();
1020 // In the KIconLoader terminology, active = hover.
1021 if (effect->hasEffect(KIconLoader::Desktop, KIconLoader::ActiveState)) {
1022 m_hoverPixmap = effect->apply(m_pixmap, KIconLoader::Desktop, KIconLoader::ActiveState);
1023 } else {
1024 m_hoverPixmap = m_pixmap;
1025 }
1026 } else if (hoverOpacity() <= 0.0) {
1027 // No hover animation is ongoing. Clear m_hoverPixmap to save memory.
1028 m_hoverPixmap = QPixmap();
1029 }
1030}
1031
1032void KStandardItemListWidget::updateTextsCache()
1033{
1034 QTextOption textOption;
1035 switch (m_layout) {
1036 case IconsLayout:
1037 textOption.setWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);
1038 textOption.setAlignment(Qt::AlignHCenter);
1039 break;
1040 case CompactLayout:
1041 case DetailsLayout:
1042 textOption.setAlignment(Qt::AlignLeft);
1043 textOption.setWrapMode(QTextOption::NoWrap);
1044 break;
1045 default:
1046 Q_ASSERT(false);
1047 break;
1048 }
1049
1050 qDeleteAll(m_textInfo);
1051 m_textInfo.clear();
1052 for (int i = 0; i < m_sortedVisibleRoles.count(); ++i) {
1053 TextInfo* textInfo = new TextInfo();
1054 textInfo->staticText.setTextFormat(Qt::PlainText);
1055 textInfo->staticText.setPerformanceHint(QStaticText::AggressiveCaching);
1056 textInfo->staticText.setTextOption(textOption);
1057 m_textInfo.insert(m_sortedVisibleRoles[i], textInfo);
1058 }
1059
1060 switch (m_layout) {
1061 case IconsLayout: updateIconsLayoutTextCache(); break;
1062 case CompactLayout: updateCompactLayoutTextCache(); break;
1063 case DetailsLayout: updateDetailsLayoutTextCache(); break;
1064 default: Q_ASSERT(false); break;
1065 }
1066
1067 const TextInfo* ratingTextInfo = m_textInfo.value("rating");
1068 if (ratingTextInfo) {
1069 // The text of the rating-role has been set to empty to get
1070 // replaced by a rating-image showing the rating as stars.
1071 const KItemListStyleOption& option = styleOption();
1072 QSizeF ratingSize = preferredRatingSize(option);
1073
1074 const qreal availableWidth = (m_layout == DetailsLayout)
1075 ? columnWidth("rating") - columnPadding(option)
1076 : size().width();
1077 if (ratingSize.width() > availableWidth) {
1078 ratingSize.rwidth() = availableWidth;
1079 }
1080 m_rating = QPixmap(ratingSize.toSize());
1081 m_rating.fill(Qt::transparent);
1082
1083 QPainter painter(&m_rating);
1084 const QRect rect(0, 0, m_rating.width(), m_rating.height());
1085 const int rating = data().value("rating").toInt();
1086 KRatingPainter::paintRating(&painter, rect, Qt::AlignJustify | Qt::AlignVCenter, rating);
1087 } else if (!m_rating.isNull()) {
1088 m_rating = QPixmap();
1089 }
1090}
1091
1092void KStandardItemListWidget::updateIconsLayoutTextCache()
1093{
1094 // +------+
1095 // | Icon |
1096 // +------+
1097 //
1098 // Name role that
1099 // might get wrapped above
1100 // several lines.
1101 // Additional role 1
1102 // Additional role 2
1103
1104 const QHash<QByteArray, QVariant> values = data();
1105
1106 const KItemListStyleOption& option = styleOption();
1107 const qreal padding = option.padding;
1108 const qreal maxWidth = size().width() - 2 * padding;
1109 const qreal widgetHeight = size().height();
1110 const qreal lineSpacing = m_customizedFontMetrics.lineSpacing();
1111
1112 // Initialize properties for the "text" role. It will be used as anchor
1113 // for initializing the position of the other roles.
1114 TextInfo* nameTextInfo = m_textInfo.value("text");
1115 const QString nameText = KStringHandler::preProcessWrap(values["text"].toString());
1116 nameTextInfo->staticText.setText(nameText);
1117
1118 // Calculate the number of lines required for the name and the required width
1119 qreal nameWidth = 0;
1120 qreal nameHeight = 0;
1121 QTextLine line;
1122
1123 QTextLayout layout(nameTextInfo->staticText.text(), m_customizedFont);
1124 layout.setTextOption(nameTextInfo->staticText.textOption());
1125 layout.beginLayout();
1126 int nameLineIndex = 0;
1127 while ((line = layout.createLine()).isValid()) {
1128 line.setLineWidth(maxWidth);
1129 nameWidth = qMax(nameWidth, line.naturalTextWidth());
1130 nameHeight += line.height();
1131
1132 ++nameLineIndex;
1133 if (nameLineIndex == option.maxTextLines) {
1134 // The maximum number of textlines has been reached. If this is
1135 // the case provide an elided text if necessary.
1136 const int textLength = line.textStart() + line.textLength();
1137 if (textLength < nameText.length()) {
1138 // Elide the last line of the text
1139 QString lastTextLine = nameText.mid(line.textStart());
1140 lastTextLine = m_customizedFontMetrics.elidedText(lastTextLine,
1141 Qt::ElideRight,
1142 maxWidth);
1143 const QString elidedText = nameText.left(line.textStart()) + lastTextLine;
1144 nameTextInfo->staticText.setText(elidedText);
1145
1146 const qreal lastLineWidth = m_customizedFontMetrics.boundingRect(lastTextLine).width();
1147 nameWidth = qMax(nameWidth, lastLineWidth);
1148 }
1149 break;
1150 }
1151 }
1152 layout.endLayout();
1153
1154 // Use one line for each additional information
1155 const int additionalRolesCount = qMax(visibleRoles().count() - 1, 0);
1156 nameTextInfo->staticText.setTextWidth(maxWidth);
1157 nameTextInfo->pos = QPointF(padding, widgetHeight -
1158 nameHeight -
1159 additionalRolesCount * lineSpacing -
1160 padding);
1161 m_textRect = QRectF(padding + (maxWidth - nameWidth) / 2,
1162 nameTextInfo->pos.y(),
1163 nameWidth,
1164 nameHeight);
1165
1166 // Calculate the position for each additional information
1167 qreal y = nameTextInfo->pos.y() + nameHeight;
1168 foreach (const QByteArray& role, m_sortedVisibleRoles) {
1169 if (role == "text") {
1170 continue;
1171 }
1172
1173 const QString text = roleText(role, values);
1174 TextInfo* textInfo = m_textInfo.value(role);
1175 textInfo->staticText.setText(text);
1176
1177 qreal requiredWidth = 0;
1178
1179 QTextLayout layout(text, m_customizedFont);
1180 QTextOption textOption;
1181 textOption.setWrapMode(QTextOption::NoWrap);
1182 layout.setTextOption(textOption);
1183
1184 layout.beginLayout();
1185 QTextLine textLine = layout.createLine();
1186 if (textLine.isValid()) {
1187 textLine.setLineWidth(maxWidth);
1188 requiredWidth = textLine.naturalTextWidth();
1189 if (requiredWidth > maxWidth) {
1190 const QString elidedText = m_customizedFontMetrics.elidedText(text, Qt::ElideRight, maxWidth);
1191 textInfo->staticText.setText(elidedText);
1192 requiredWidth = m_customizedFontMetrics.width(elidedText);
1193 } else if (role == "rating") {
1194 // Use the width of the rating pixmap, because the rating text is empty.
1195 requiredWidth = m_rating.width();
1196 }
1197 }
1198 layout.endLayout();
1199
1200 textInfo->pos = QPointF(padding, y);
1201 textInfo->staticText.setTextWidth(maxWidth);
1202
1203 const QRectF textRect(padding + (maxWidth - requiredWidth) / 2, y, requiredWidth, lineSpacing);
1204 m_textRect |= textRect;
1205
1206 y += lineSpacing;
1207 }
1208
1209 // Add a padding to the text rectangle
1210 m_textRect.adjust(-padding, -padding, padding, padding);
1211}
1212
1213void KStandardItemListWidget::updateCompactLayoutTextCache()
1214{
1215 // +------+ Name role
1216 // | Icon | Additional role 1
1217 // +------+ Additional role 2
1218
1219 const QHash<QByteArray, QVariant> values = data();
1220
1221 const KItemListStyleOption& option = styleOption();
1222 const qreal widgetHeight = size().height();
1223 const qreal lineSpacing = m_customizedFontMetrics.lineSpacing();
1224 const qreal textLinesHeight = qMax(visibleRoles().count(), 1) * lineSpacing;
1225 const int scaledIconSize = (textLinesHeight < option.iconSize) ? widgetHeight - 2 * option.padding : option.iconSize;
1226
1227 qreal maximumRequiredTextWidth = 0;
1228 const qreal x = option.padding * 3 + scaledIconSize;
1229 qreal y = qRound((widgetHeight - textLinesHeight) / 2);
1230 const qreal maxWidth = size().width() - x - option.padding;
1231 foreach (const QByteArray& role, m_sortedVisibleRoles) {
1232 const QString text = roleText(role, values);
1233 TextInfo* textInfo = m_textInfo.value(role);
1234 textInfo->staticText.setText(text);
1235
1236 qreal requiredWidth = m_customizedFontMetrics.width(text);
1237 if (requiredWidth > maxWidth) {
1238 requiredWidth = maxWidth;
1239 const QString elidedText = m_customizedFontMetrics.elidedText(text, Qt::ElideRight, maxWidth);
1240 textInfo->staticText.setText(elidedText);
1241 }
1242
1243 textInfo->pos = QPointF(x, y);
1244 textInfo->staticText.setTextWidth(maxWidth);
1245
1246 maximumRequiredTextWidth = qMax(maximumRequiredTextWidth, requiredWidth);
1247
1248 y += lineSpacing;
1249 }
1250
1251 m_textRect = QRectF(x - 2 * option.padding, 0, maximumRequiredTextWidth + 3 * option.padding, widgetHeight);
1252}
1253
1254void KStandardItemListWidget::updateDetailsLayoutTextCache()
1255{
1256 // Precondition: Requires already updated m_expansionArea
1257 // to determine the left position.
1258
1259 // +------+
1260 // | Icon | Name role Additional role 1 Additional role 2
1261 // +------+
1262 m_textRect = QRectF();
1263
1264 const KItemListStyleOption& option = styleOption();
1265 const QHash<QByteArray, QVariant> values = data();
1266
1267 const qreal widgetHeight = size().height();
1268 const int scaledIconSize = widgetHeight - 2 * option.padding;
1269 const int fontHeight = m_customizedFontMetrics.height();
1270
1271 const qreal columnWidthInc = columnPadding(option);
1272 qreal firstColumnInc = scaledIconSize;
1273 if (m_supportsItemExpanding) {
1274 firstColumnInc += (m_expansionArea.left() + m_expansionArea.right() + widgetHeight) / 2;
1275 } else {
1276 firstColumnInc += option.padding;
1277 }
1278
1279 qreal x = firstColumnInc;
1280 const qreal y = qMax(qreal(option.padding), (widgetHeight - fontHeight) / 2);
1281
1282 foreach (const QByteArray& role, m_sortedVisibleRoles) {
1283 QString text = roleText(role, values);
1284
1285 // Elide the text in case it does not fit into the available column-width
1286 qreal requiredWidth = m_customizedFontMetrics.width(text);
1287 const qreal roleWidth = columnWidth(role);
1288 qreal availableTextWidth = roleWidth - columnWidthInc;
1289
1290 const bool isTextRole = (role == "text");
1291 if (isTextRole) {
1292 availableTextWidth -= firstColumnInc;
1293 }
1294
1295 if (requiredWidth > availableTextWidth) {
1296 text = m_customizedFontMetrics.elidedText(text, Qt::ElideRight, availableTextWidth);
1297 requiredWidth = m_customizedFontMetrics.width(text);
1298 }
1299
1300 TextInfo* textInfo = m_textInfo.value(role);
1301 textInfo->staticText.setText(text);
1302 textInfo->pos = QPointF(x + columnWidthInc / 2, y);
1303 x += roleWidth;
1304
1305 if (isTextRole) {
1306 const qreal textWidth = option.extendedSelectionRegion
1307 ? size().width() - textInfo->pos.x()
1308 : requiredWidth + 2 * option.padding;
1309 m_textRect = QRectF(textInfo->pos.x() - 2 * option.padding, 0,
1310 textWidth + option.padding, size().height());
1311
1312 // The column after the name should always be aligned on the same x-position independent
1313 // from the expansion-level shown in the name column
1314 x -= firstColumnInc;
1315 } else if (isRoleRightAligned(role)) {
1316 textInfo->pos.rx() += roleWidth - requiredWidth - columnWidthInc;
1317 }
1318 }
1319}
1320
1321void KStandardItemListWidget::updateAdditionalInfoTextColor()
1322{
1323 QColor c1;
1324 if (m_customTextColor.isValid()) {
1325 c1 = m_customTextColor;
1326 } else if (isSelected() && m_layout != DetailsLayout) {
1327 c1 = styleOption().palette.highlightedText().color();
1328 } else {
1329 c1 = styleOption().palette.text().color();
1330 }
1331
1332 // For the color of the additional info the inactive text color
1333 // is not used as this might lead to unreadable text for some color schemes. Instead
1334 // the text color c1 is slightly mixed with the background color.
1335 const QColor c2 = styleOption().palette.base().color();
1336 const int p1 = 70;
1337 const int p2 = 100 - p1;
1338 m_additionalInfoTextColor = QColor((c1.red() * p1 + c2.red() * p2) / 100,
1339 (c1.green() * p1 + c2.green() * p2) / 100,
1340 (c1.blue() * p1 + c2.blue() * p2) / 100);
1341}
1342
1343void KStandardItemListWidget::drawPixmap(QPainter* painter, const QPixmap& pixmap)
1344{
1345 if (m_scaledPixmapSize != pixmap.size()) {
1346 QPixmap scaledPixmap = pixmap;
1347 KPixmapModifier::scale(scaledPixmap, m_scaledPixmapSize);
1348 painter->drawPixmap(m_pixmapPos, scaledPixmap);
1349
1350#ifdef KSTANDARDITEMLISTWIDGET_DEBUG
1351 painter->setPen(Qt::blue);
1352 painter->drawRect(QRectF(m_pixmapPos, QSizeF(m_scaledPixmapSize)));
1353#endif
1354 } else {
1355 painter->drawPixmap(m_pixmapPos, pixmap);
1356 }
1357}
1358
1359void KStandardItemListWidget::drawSiblingsInformation(QPainter* painter)
1360{
1361 const int siblingSize = size().height();
1362 const int x = (m_expansionArea.left() + m_expansionArea.right() - siblingSize) / 2;
1363 QRect siblingRect(x, 0, siblingSize, siblingSize);
1364
1365 QStyleOption option;
1366 option.palette.setColor(QPalette::Text, option.palette.color(normalTextColorRole()));
1367 bool isItemSibling = true;
1368
1369 const QBitArray siblings = siblingsInformation();
1370 for (int i = siblings.count() - 1; i >= 0; --i) {
1371 option.rect = siblingRect;
1372 option.state = siblings.at(i) ? QStyle::State_Sibling : QStyle::State_None;
1373
1374 if (isItemSibling) {
1375 option.state |= QStyle::State_Item;
1376 if (m_isExpandable) {
1377 option.state |= QStyle::State_Children;
1378 }
1379 if (data()["isExpanded"].toBool()) {
1380 option.state |= QStyle::State_Open;
1381 }
1382 isItemSibling = false;
1383 }
1384
1385 style()->drawPrimitive(QStyle::PE_IndicatorBranch, &option, painter);
1386
1387 siblingRect.translate(-siblingRect.width(), 0);
1388 }
1389}
1390
1391QRectF KStandardItemListWidget::roleEditingRect(const QByteArray& role) const
1392{
1393 const TextInfo* textInfo = m_textInfo.value(role);
1394 if (!textInfo) {
1395 return QRectF();
1396 }
1397
1398 QRectF rect(textInfo->pos, textInfo->staticText.size());
1399 if (m_layout == DetailsLayout) {
1400 rect.setWidth(columnWidth(role) - rect.x());
1401 }
1402
1403 return rect;
1404}
1405
1406void KStandardItemListWidget::closeRoleEditor()
1407{
1408 disconnect(m_roleEditor, SIGNAL(roleEditingCanceled(QByteArray,QVariant)),
1409 this, SLOT(slotRoleEditingCanceled(QByteArray,QVariant)));
1410 disconnect(m_roleEditor, SIGNAL(roleEditingFinished(QByteArray,QVariant)),
1411 this, SLOT(slotRoleEditingFinished(QByteArray,QVariant)));
1412
1413 if (m_roleEditor->hasFocus()) {
1414 // If the editing was not ended by a FocusOut event, we have
1415 // to transfer the keyboard focus back to the KItemListContainer.
1416 scene()->views()[0]->parentWidget()->setFocus();
1417 }
1418
1419 if (m_oldRoleEditor) {
1420 m_oldRoleEditor->deleteLater();
1421 }
1422 m_oldRoleEditor = m_roleEditor;
1423 m_roleEditor->hide();
1424 m_roleEditor = 0;
1425}
1426
1427QPixmap KStandardItemListWidget::pixmapForIcon(const QString& name, const QStringList& overlays, int size)
1428{
1429 const QString key = "KStandardItemListWidget:" % name % ":" % overlays.join(":") % ":" % QString::number(size);
1430 QPixmap pixmap;
1431
1432 if (!QPixmapCache::find(key, pixmap)) {
1433 const KIcon icon(name);
1434
1435 int requestedSize;
1436 if (size <= KIconLoader::SizeSmall) {
1437 requestedSize = KIconLoader::SizeSmall;
1438 } else if (size <= KIconLoader::SizeSmallMedium) {
1439 requestedSize = KIconLoader::SizeSmallMedium;
1440 } else if (size <= KIconLoader::SizeMedium) {
1441 requestedSize = KIconLoader::SizeMedium;
1442 } else if (size <= KIconLoader::SizeLarge) {
1443 requestedSize = KIconLoader::SizeLarge;
1444 } else if (size <= KIconLoader::SizeHuge) {
1445 requestedSize = KIconLoader::SizeHuge;
1446 } else if (size <= KIconLoader::SizeEnormous) {
1447 requestedSize = KIconLoader::SizeEnormous;
1448 } else if (size <= KIconLoader::SizeEnormous * 2) {
1449 requestedSize = KIconLoader::SizeEnormous * 2;
1450 } else {
1451 requestedSize = size;
1452 }
1453
1454 pixmap = icon.pixmap(requestedSize, requestedSize);
1455 if (requestedSize != size) {
1456 KPixmapModifier::scale(pixmap, QSize(size, size));
1457 }
1458
1459 // Strangely KFileItem::overlays() returns empty string-values, so
1460 // we need to check first whether an overlay must be drawn at all.
1461 // It is more efficient to do it here, as KIconLoader::drawOverlays()
1462 // assumes that an overlay will be drawn and has some additional
1463 // setup time.
1464 foreach (const QString& overlay, overlays) {
1465 if (!overlay.isEmpty()) {
1466 // There is at least one overlay, draw all overlays above m_pixmap
1467 // and cancel the check
1468 KIconLoader::global()->drawOverlays(overlays, pixmap, KIconLoader::Desktop);
1469 break;
1470 }
1471 }
1472
1473 QPixmapCache::insert(key, pixmap);
1474 }
1475
1476 return pixmap;
1477}
1478
1479QSizeF KStandardItemListWidget::preferredRatingSize(const KItemListStyleOption& option)
1480{
1481 const qreal height = option.fontMetrics.ascent();
1482 return QSizeF(height * 5, height);
1483}
1484
1485qreal KStandardItemListWidget::columnPadding(const KItemListStyleOption& option)
1486{
1487 return option.padding * 6;
1488}
1489
1490#include "kstandarditemlistwidget.moc"
1491