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/*
* SPDX-FileCopyrightText: 2011 Peter Penz <[email protected]>
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "dolphinitemlistview.h"
#include "dolphin_compactmodesettings.h"
#include "dolphin_detailsmodesettings.h"
#include "dolphin_generalsettings.h"
#include "dolphin_iconsmodesettings.h"
#include "dolphinfileitemlistwidget.h"
#include "kitemviews/kfileitemmodel.h"
#include "kitemviews/kitemlistcontroller.h"
#include "settings/viewmodes/viewmodesettings.h"
#include "views/viewmodecontroller.h"
#include "zoomlevelinfo.h"
#include <KIO/PreviewJob>
#include <QtMath>
DolphinItemListView::DolphinItemListView(QGraphicsWidget* parent) :
KFileItemListView(parent),
m_zoomLevel(0)
{
updateFont();
updateGridSize();
}
DolphinItemListView::~DolphinItemListView()
{
writeSettings();
}
void DolphinItemListView::setZoomLevel(int level)
{
if (level < ZoomLevelInfo::minimumLevel()) {
level = ZoomLevelInfo::minimumLevel();
} else if (level > ZoomLevelInfo::maximumLevel()) {
level = ZoomLevelInfo::maximumLevel();
}
if (level == m_zoomLevel) {
return;
}
m_zoomLevel = level;
ViewModeSettings settings(itemLayout());
if (previewsShown()) {
const int previewSize = ZoomLevelInfo::iconSizeForZoomLevel(level);
settings.setPreviewSize(previewSize);
} else {
const int iconSize = ZoomLevelInfo::iconSizeForZoomLevel(level);
settings.setIconSize(iconSize);
}
updateGridSize();
}
int DolphinItemListView::zoomLevel() const
{
return m_zoomLevel;
}
void DolphinItemListView::readSettings()
{
ViewModeSettings settings(itemLayout());
settings.readConfig();
beginTransaction();
setEnabledSelectionToggles(GeneralSettings::showSelectionToggle());
setHighlightEntireRow(DetailsModeSettings::leadingPadding());
setSupportsItemExpanding(itemLayoutSupportsItemExpanding(itemLayout()));
updateFont();
updateGridSize();
const KConfigGroup globalConfig(KSharedConfig::openConfig(), "PreviewSettings");
setEnabledPlugins(globalConfig.readEntry("Plugins", KIO::PreviewJob::defaultPlugins()));
setLocalFileSizePreviewLimit(globalConfig.readEntry("MaximumSize", 0));
endTransaction();
}
void DolphinItemListView::writeSettings()
{
IconsModeSettings::self()->save();
CompactModeSettings::self()->save();
DetailsModeSettings::self()->save();
}
KItemListWidgetCreatorBase* DolphinItemListView::defaultWidgetCreator() const
{
return new KItemListWidgetCreator<DolphinFileItemListWidget>();
}
bool DolphinItemListView::itemLayoutSupportsItemExpanding(ItemLayout layout) const
{
return layout == DetailsLayout && DetailsModeSettings::expandableFolders();
}
void DolphinItemListView::onItemLayoutChanged(ItemLayout current, ItemLayout previous)
{
setHeaderVisible(current == DetailsLayout);
updateFont();
updateGridSize();
KFileItemListView::onItemLayoutChanged(current, previous);
}
void DolphinItemListView::onPreviewsShownChanged(bool shown)
{
Q_UNUSED(shown)
updateGridSize();
}
void DolphinItemListView::onVisibleRolesChanged(const QList<QByteArray>& current,
const QList<QByteArray>& previous)
{
KFileItemListView::onVisibleRolesChanged(current, previous);
updateGridSize();
}
void DolphinItemListView::updateFont()
{
const ViewModeSettings settings(itemLayout());
if (settings.useSystemFont()) {
KItemListView::updateFont();
} else {
QFont font(settings.fontFamily(), qRound(settings.fontSize()));
font.setItalic(settings.italicFont());
font.setWeight(settings.fontWeight());
font.setPointSizeF(settings.fontSize());
KItemListStyleOption option = styleOption();
option.font = font;
option.fontMetrics = QFontMetrics(font);
setStyleOption(option);
}
}
void DolphinItemListView::updateGridSize()
{
const ViewModeSettings settings(itemLayout());
// Calculate the size of the icon
const int iconSize = previewsShown() ? settings.previewSize() : settings.iconSize();
m_zoomLevel = ZoomLevelInfo::zoomLevelForIconSize(QSize(iconSize, iconSize));
KItemListStyleOption option = styleOption();
const int padding = 2;
int horizontalMargin = 0;
int verticalMargin = 0;
// Calculate the item-width and item-height
int itemWidth;
int itemHeight;
int maxTextLines = 0;
int maxTextWidth = 0;
switch (itemLayout()) {
case KFileItemListView::IconsLayout: {
// an exponential factor based on zoom, 0 -> 1, 4 -> 1.36 8 -> ~1.85, 16 -> 3.4
auto zoomFactor = qExp(m_zoomLevel / 13.0);
// 9 is the average char width for 10pt Noto Sans, making fontFactor =1
// by each pixel the font gets larger the factor increases by 1/9
auto fontFactor = option.fontMetrics.averageCharWidth() / 9.0;
itemWidth = 48 + IconsModeSettings::textWidthIndex() * 64 * fontFactor * zoomFactor;
if (itemWidth < iconSize + padding * 2 * zoomFactor) {
itemWidth = iconSize + padding * 2 * zoomFactor;
}
itemHeight = padding * 3 + iconSize + option.fontMetrics.lineSpacing();
horizontalMargin = 4;
verticalMargin = 8;
maxTextLines = IconsModeSettings::maximumTextLines();
break;
}
case KFileItemListView::CompactLayout: {
itemWidth = padding * 4 + iconSize + option.fontMetrics.height() * 5;
const int textLinesCount = visibleRoles().count();
itemHeight = padding * 2 + qMax(iconSize, textLinesCount * option.fontMetrics.lineSpacing());
if (CompactModeSettings::maximumTextWidthIndex() > 0) {
// A restriction is given for the maximum width of the text (0 means
// having no restriction)
maxTextWidth = option.fontMetrics.height() * 10 * CompactModeSettings::maximumTextWidthIndex();
}
horizontalMargin = 8;
break;
}
case KFileItemListView::DetailsLayout: {
itemWidth = -1;
itemHeight = padding * 2 + qMax(iconSize, option.fontMetrics.lineSpacing());
break;
}
default:
itemWidth = -1;
itemHeight = -1;
Q_ASSERT(false);
break;
}
// Apply the calculated values
option.padding = padding;
option.horizontalMargin = horizontalMargin;
option.verticalMargin = verticalMargin;
option.iconSize = iconSize;
option.maxTextLines = maxTextLines;
option.maxTextWidth = maxTextWidth;
beginTransaction();
setStyleOption(option);
setItemSize(QSizeF(itemWidth, itemHeight));
endTransaction();
}
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