aseprite/src/app/ui/file_list.cpp

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2015-02-12 23:16:25 +08:00
// Aseprite
// Copyright (C) 2019-2025 Igara Studio S.A.
// Copyright (C) 2001-2018 David Capello
2015-02-12 23:16:25 +08:00
//
2016-08-27 04:02:58 +08:00
// This program is distributed under the terms of
// the End-User License Agreement for Aseprite.
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "app/ui/file_list.h"
#include "app/modules/gfx.h"
#include "app/thumbnail_generator.h"
#include "app/ui/skin/skin_theme.h"
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#include "base/string.h"
#include "base/time.h"
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#include "os/surface.h"
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#include "text/font.h"
#include "text/font_metrics.h"
#include "ui/ui.h"
#include <algorithm>
#include <cctype>
#include <cstring>
#define ISEARCH_KEYPRESS_INTERVAL_MSECS 500
namespace app {
using namespace app::skin;
using namespace gfx;
using namespace ui;
FileList::FileList()
: Widget(kGenericWidget)
, m_currentFolder(FileSystemModule::instance()->getRootFileItem())
, m_req_valid(false)
, m_selected(nullptr)
, m_isearchClock(0)
, m_generateThumbnailTimer(200, this)
, m_monitoringTimer(50, this)
, m_itemToGenerateThumbnail(nullptr)
, m_multiselect(false)
, m_zoom(1.0)
, m_itemsPerRow(0)
, m_showHidden(Preferences::instance().fileSelector.showHidden())
{
setFocusStop(true);
setDoubleBuffered(true);
m_generateThumbnailTimer.Tick.connect(&FileList::onGenerateThumbnailTick, this);
m_monitoringTimer.Tick.connect(&FileList::onMonitoringTick, this);
m_monitoringTimer.start();
regenerateList();
}
FileList::~FileList()
{
// Stop timers.
m_generateThumbnailTimer.stop();
m_monitoringTimer.stop();
// Stop workers creating thumbnails.
ThumbnailGenerator::instance()->stopAllWorkers();
}
void FileList::setExtensions(const base::paths& extensions)
{
m_exts = extensions;
// Refresh
if (isVisible())
setCurrentFolder(m_currentFolder);
}
void FileList::setCurrentFolder(IFileItem* folder)
{
ASSERT(folder != NULL);
ASSERT(folder->isBrowsable());
m_currentFolder = folder;
m_req_valid = false;
m_selected = nullptr;
regenerateList();
// As now we are in other folder, we can stop the generation of all
// thumbnails.
ThumbnailGenerator::instance()->stopAllWorkers();
// select first folder
if (!m_list.empty() && m_list.front()->isBrowsable())
selectIndex(0);
// Emit "CurrentFolderChanged" event.
onCurrentFolderChanged();
invalidate();
View::getView(this)->updateView();
}
FileItemList FileList::selectedFileItems() const
{
ASSERT(m_selectedItems.size() == m_list.size());
FileItemList result;
for (int i = 0; i < int(m_list.size()); ++i) {
if (m_selectedItems[i])
result.push_back(m_list[i]);
}
return result;
}
void FileList::deselectedFileItems()
{
if (!m_multiselect)
return;
bool redraw = false;
for (int i = 0; i < int(m_list.size()); ++i) {
if (m_selected == m_list[i]) {
if (!m_selectedItems[i]) {
m_selectedItems[i] = true;
redraw = true;
}
}
else if (m_selectedItems[i]) {
m_selectedItems[i] = false;
redraw = true;
}
}
if (redraw)
invalidate();
}
void FileList::setMultipleSelection(bool multiple)
{
m_multiselect = multiple;
}
void FileList::goUp()
{
IFileItem* folder = m_currentFolder;
IFileItem* parent = folder->parent();
if (parent) {
setCurrentFolder(parent);
m_selected = folder;
deselectedFileItems();
// Make the selected item visible.
makeSelectedFileitemVisible();
}
}
void FileList::setZoom(const double zoom)
{
m_zoom = std::clamp(zoom, 1.0, 8.0);
m_req_valid = false;
// if (auto view = View::getView(this))
recalcAllFileItemInfo();
}
void FileList::animateToZoom(const double zoom)
{
m_fromZoom = m_zoom;
m_toZoom = zoom;
startAnimation(ANI_ZOOM, 10);
}
void FileList::setShowHidden(const bool show)
{
m_showHidden = show;
m_req_valid = false;
m_selected = nullptr;
regenerateList();
}
bool FileList::onProcessMessage(Message* msg)
{
switch (msg->type()) {
case kMouseDownMessage: captureMouse(); [[fallthrough]];
case kMouseMoveMessage:
if (hasCapture()) {
MouseMessage* mouseMsg = static_cast<MouseMessage*>(msg);
IFileItem* oldSelected = m_selected;
m_selected = nullptr;
// Mouse position in client coordinates
gfx::Point mousePos = mouseMsg->position() - bounds().origin();
// rows
int i = 0;
for (auto begin = m_list.begin(), end = m_list.end(), it = begin; it != end; ++it, ++i) {
IFileItem* fi = *it;
ItemInfo info = getFileItemInfo(i);
if ((info.bounds.contains(mousePos)) ||
(isListView() && ((it == begin && mousePos.y < info.bounds.y) ||
(it == end - 1 && mousePos.y >= info.bounds.y2())))) {
m_selected = fi;
if (m_multiselect && oldSelected != fi && m_selectedItems.size() == m_list.size()) {
if (msg->shiftPressed() || msg->ctrlPressed() || msg->cmdPressed()) {
m_selectedItems[i] = !m_selectedItems[i];
}
else {
std::fill(m_selectedItems.begin(), m_selectedItems.end(), false);
m_selectedItems[i] = true;
}
invalidate();
}
makeSelectedFileitemVisible();
break;
}
}
if (oldSelected != m_selected) {
if (hasThumbnailsPerItem())
generateThumbnailForFileItem(m_selected);
else
delayThumbnailGenerationForSelectedItem();
invalidate();
// Emit "FileSelected" event.
onFileSelected();
}
}
break;
case kMouseUpMessage:
if (hasCapture()) {
releaseMouse();
}
break;
case kKeyDownMessage:
if (hasFocus()) {
KeyMessage* keyMsg = static_cast<KeyMessage*>(msg);
KeyScancode scancode = keyMsg->scancode();
int unicodeChar = keyMsg->unicodeChar();
int select = selectedIndex();
View* view = View::getView(this);
int bottom = m_list.size();
switch (scancode) {
case kKeyUp:
if (select >= 0)
select -= m_itemsPerRow;
else
select = 0;
break;
case kKeyDown:
if (select >= 0)
select += m_itemsPerRow;
else
select = 0;
break;
case kKeyHome: select = 0; break;
case kKeyEnd: select = bottom - 1; break;
case kKeyPageUp:
case kKeyPageDown: {
int sgn = (scancode == kKeyPageUp) ? -1 : 1;
gfx::Rect vp = view->viewportBounds();
if (select < 0)
select = 0;
select += sgn * vp.h / (textHeight() + 4 * guiscale());
break;
}
case kKeyLeft:
case kKeyRight: {
const int delta = (scancode == kKeyLeft ? -1 : 1);
if (isIconView()) {
if (select >= 0)
select += delta;
else
select = 0;
}
else if (select >= 0) {
gfx::Rect vp = view->viewportBounds();
gfx::Point scroll = view->viewScroll();
scroll.x += vp.w / 2 * delta;
view->setViewScroll(scroll);
}
break;
}
case kKeyEnter:
case kKeyEnterPad:
if (m_selected) {
if (m_selected->isBrowsable()) {
setCurrentFolder(m_selected);
return true;
}
if (m_selected->isFolder()) {
// Do nothing (is a folder but not browseable).
return true;
}
else {
// Emit "FileAccepted" event.
onFileAccepted();
return true;
}
}
else
return Widget::onProcessMessage(msg);
case kKeyBackspace: goUp(); return true;
default:
if (unicodeChar == ' ' ||
(std::tolower(unicodeChar) >= 'a' && std::tolower(unicodeChar) <= 'z') ||
(unicodeChar >= '0' && unicodeChar <= '9')) {
if ((base::current_tick() - m_isearchClock) > ISEARCH_KEYPRESS_INTERVAL_MSECS)
m_isearch.clear();
m_isearch.push_back(unicodeChar);
int i, chrs = m_isearch.size();
FileItemList::iterator link = m_list.begin() + ((select >= 0) ? select : 0);
for (i = std::max(select, 0); i < bottom; ++i, ++link) {
IFileItem* fi = *link;
if (base::utf8_icmp(fi->displayName(), m_isearch, chrs) == 0) {
select = i;
break;
}
}
m_isearchClock = base::current_tick();
// Go to selectIndex...
}
else
return Widget::onProcessMessage(msg);
}
if (bottom > 0)
selectIndex(std::clamp(select, 0, bottom - 1));
return true;
}
break;
case kMouseWheelMessage: {
View* view = View::getView(this);
if (view) {
// Zoom
if (msg->ctrlPressed() || // TODO configurable
msg->cmdPressed()) {
gfx::Point delta = static_cast<MouseMessage*>(msg)->wheelDelta();
const bool precise = static_cast<MouseMessage*>(msg)->preciseWheel();
double dz = delta.x + delta.y;
if (precise) {
dz /= 1.5;
if (dz < -1.0)
dz = -1.0;
else if (dz > 1.0)
dz = 1.0;
}
setZoom(zoom() - dz);
break;
}
else {
View::scrollByMessage(this, msg, 3 * (textHeight() + 4 * guiscale()));
}
}
break;
}
case kDoubleClickMessage:
if (m_selected) {
if (m_selected->isBrowsable()) {
setCurrentFolder(m_selected);
return true;
}
else {
onFileAccepted(); // Emit "FileAccepted" event.
return true;
}
}
break;
case kTouchMagnifyMessage: {
setZoom(zoom() + 4.0 * static_cast<ui::TouchMessage*>(msg)->magnification());
break;
}
}
return Widget::onProcessMessage(msg);
}
void FileList::onPaint(ui::PaintEvent& ev)
{
Graphics* g = ev.graphics();
auto theme = SkinTheme::get(this);
gfx::Rect bounds = clientBounds();
g->fillRect(theme->colors.background(), bounds);
int i = 0, selectedIndex = -1;
for (IFileItem* fi : m_list) {
if (m_selected != fi) {
paintItem(g, fi, i);
}
else {
selectedIndex = i;
}
++i;
}
// Paint main selected index (so if the filename label is bigger it
// will appear over other items).
if (m_selected) {
ASSERT(selectedIndex >= 0);
if (selectedIndex >= 0)
paintItem(g, m_selected, selectedIndex);
else {
// Strange run-time state where the "m_selected" is not in the
// list. The previous assert should fail on Debug so this is
// here only for Release mode.
return;
}
}
// Draw main thumbnail for the selected item when there are no
// thumbnails per item.
if (isListView() && m_selected && m_selected->getThumbnail()) {
gfx::Rect tbounds = mainThumbnailBounds();
tbounds.enlarge(1);
g->drawRect(gfx::rgba(0, 0, 0, 64), tbounds);
tbounds.shrink(1);
os::SurfaceRef thumbnail = m_selected->getThumbnail();
ui::Paint paint;
paint.blendMode(os::BlendMode::SrcOver);
os::Sampling sampling;
if (thumbnail->width() > tbounds.w && thumbnail->height() > tbounds.h) {
sampling = os::Sampling(os::Sampling::Filter::Linear, os::Sampling::Mipmap::Nearest);
}
g->drawSurface(thumbnail.get(),
gfx::Rect(0, 0, thumbnail->width(), thumbnail->height()),
tbounds,
sampling,
&paint);
}
}
void FileList::paintItem(ui::Graphics* g, IFileItem* fi, const int i)
{
ItemInfo info = getFileItemInfo(i);
if ((g->getClipBounds() & info.bounds).isEmpty())
return;
auto theme = SkinTheme::get(this);
const bool evenRow = ((i & 1) == 0);
gfx::Rect tbounds = info.thumbnail;
gfx::Color bgcolor;
gfx::Color fgcolor;
if ((!m_multiselect && fi == m_selected) ||
(m_multiselect && m_selectedItems.size() == m_list.size() && m_selectedItems[i])) {
fgcolor = theme->colors.filelistSelectedRowText();
bgcolor = theme->colors.filelistSelectedRowFace();
}
else {
bgcolor = evenRow ? theme->colors.filelistEvenRowFace() : theme->colors.filelistOddRowFace();
if (fi->isFolder() && !fi->isBrowsable())
fgcolor = theme->colors.filelistDisabledRowText();
else
fgcolor = evenRow ? theme->colors.filelistEvenRowText() : theme->colors.filelistOddRowText();
}
// Item background
g->fillRect(bgcolor, info.bounds);
gfx::Rect textBounds = info.text;
// Folder icon or thumbnail
os::SurfaceRef thumbnail = nullptr;
if (fi->isFolder()) {
if (isListView()) {
thumbnail = theme->parts.folderIconSmall()->bitmapRef(0);
tbounds = textBounds;
tbounds.x += 2 * guiscale();
tbounds.w = tbounds.h;
textBounds.x += tbounds.x2();
}
else {
thumbnail = (m_zoom < 4.0 ? theme->parts.folderIconMedium()->bitmapRef(0) :
theme->parts.folderIconBig()->bitmapRef(0));
}
}
else {
thumbnail = fi->getThumbnail();
}
// item name
if (isIconView() && textBounds.w > info.bounds.w) {
g->drawAlignedUIText(fi->displayName(),
fgcolor,
bgcolor,
(textBounds & gfx::Rect(info.bounds).shrink(2 * guiscale())),
ui::CENTER | ui::TOP | ui::CHARWRAP);
}
else {
auto blob = text::TextBlob::MakeWithShaper(theme->fontMgr(), font(), fi->displayName());
if (blob) {
Paint paint;
paint.color(fgcolor);
paint.style(os::Paint::Fill);
text::FontMetrics metrics;
font()->metrics(&metrics);
const float baselineDelta = -metrics.ascent - blob->baseline();
g->drawTextBlob(
blob,
gfx::PointF(textBounds.x + 2 * guiscale(), textBounds.y + 2 * guiscale() + baselineDelta),
paint);
}
}
// Draw thumbnail progress bar
double progress = fi->getThumbnailProgress();
if (isIconView() && !thumbnail) {
if (progress == 0.0)
generateThumbnailForFileItem(fi);
}
if (!tbounds.isEmpty()) {
if (thumbnail) {
tbounds = gfx::Rect(0, 0, thumbnail->width(), thumbnail->height()).fitIn(tbounds);
if (!fi->isFolder()) {
g->drawRect(gfx::rgba(0, 0, 0, 64), tbounds);
tbounds.shrink(1);
}
ui::Paint paint;
paint.blendMode(os::BlendMode::SrcOver);
os::Sampling sampling;
if (thumbnail->width() > tbounds.w && thumbnail->height() > tbounds.h) {
sampling = os::Sampling(os::Sampling::Filter::Linear, os::Sampling::Mipmap::Nearest);
}
g->drawSurface(thumbnail.get(),
gfx::Rect(0, 0, thumbnail->width(), thumbnail->height()),
tbounds,
sampling,
&paint);
}
else {
tbounds =
gfx::Rect(0, 0, 20 * guiscale(), 2 + 4 * (8.0 - m_zoom) / 8.0 * guiscale()).fitIn(tbounds);
// Start thumbnail generation for this item
generateThumbnailForFileItem(fi);
theme->paintProgressBar(g, tbounds, progress);
}
}
}
gfx::Rect FileList::mainThumbnailBounds()
{
gfx::Rect result;
if (!m_selected)
return result;
os::SurfaceRef thumbnail = m_selected->getThumbnail();
if (!thumbnail)
return result;
ItemInfo info = getFileItemInfo(selectedIndex());
if (!info.thumbnail.isEmpty()) // There is thumbnail per item
return result;
View* view = View::getView(this);
gfx::Rect vp = view->viewportBounds();
int x = vp.x + vp.w - 2 * guiscale() - thumbnail->width();
int y = info.bounds.center().y - thumbnail->height() / 2 + bounds().y;
y = std::clamp(y, vp.y + 2 * guiscale(), vp.y + vp.h - 3 * guiscale() - thumbnail->height());
x -= bounds().x;
y -= bounds().y;
return gfx::Rect(x, y, thumbnail->width(), thumbnail->height());
}
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void FileList::onSizeHint(SizeHintEvent& ev)
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{
if (!m_req_valid) {
gfx::Rect req;
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// rows
for (int i = 0; i < int(m_list.size()); ++i) {
ItemInfo info = getFileItemInfo(i);
req |= info.bounds;
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}
m_req_valid = true;
m_req_w = req.w;
m_req_h = req.h;
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}
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ev.setSizeHint(Size(m_req_w, m_req_h));
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}
void FileList::onFileSelected()
{
FileSelected();
}
void FileList::onFileAccepted()
{
FileAccepted();
}
void FileList::onCurrentFolderChanged()
{
CurrentFolderChanged();
}
void FileList::onMonitoringTick()
{
auto start = base::current_tick();
while (!m_generateThumbnailsForTheseItems.empty() &&
// No more than 200ms launching thumbnail generators
base::current_tick() - start < 200) {
auto fi = m_generateThumbnailsForTheseItems.front();
m_generateThumbnailsForTheseItems.pop_front();
ThumbnailGenerator::instance()->generateThumbnail(fi);
}
if (ThumbnailGenerator::instance()->checkWorkers())
invalidate();
}
void FileList::onGenerateThumbnailTick()
{
m_generateThumbnailTimer.stop();
auto fi = m_itemToGenerateThumbnail;
if (fi)
generateThumbnailForFileItem(fi);
}
void FileList::recalcAllFileItemInfo()
{
View* view = View::getView(this);
if (view)
view->setScrollableSize(gfx::Size(1, view->bounds().h), false);
m_info.resize(m_list.size());
if (m_info.empty()) {
m_itemsPerRow = 0;
return;
}
for (int i = 0; i < int(m_info.size()); ++i)
m_info[i] = calcFileItemInfo(i);
m_itemsPerRow = 1;
// Add the vertical scrollbar space
if (isListView()) {
if (view) {
view->updateView();
if (!view->verticalBar()->isVisible()) {
gfx::Rect vp = view->viewportBounds();
for (auto& info : m_info) {
info.bounds.w = vp.w;
}
}
}
}
// Redistribute items in X axis
else if (isIconView()) {
int maxWidth = 0;
int maxTextWidth = 0;
for (const auto& info : m_info) {
int w = std::min(info.bounds.w, info.thumbnail.w * 2);
maxWidth = std::max(maxWidth, w);
maxTextWidth = std::max(maxTextWidth, info.text.w);
}
if (maxWidth == 0)
return;
gfx::Size vp = (view ? view->viewportBounds().size() : size());
int itemsPerRow = vp.w / maxWidth;
if (itemsPerRow < 3)
itemsPerRow = 3;
int itemWidth = vp.w / itemsPerRow;
int i = 0;
for (int y = 0; i < int(m_info.size());) {
int h = 0;
int j = 0;
int x = 0;
for (; j < itemsPerRow && i < int(m_info.size()); ++j, ++i, x += itemWidth) {
auto& info = m_info[i];
int deltax = x - info.bounds.x;
int deltay = y - info.bounds.y;
info.bounds.x += deltax;
info.bounds.y += deltay;
info.bounds.w = itemWidth;
if (maxTextWidth > itemWidth) {
info.bounds.h += info.text.h;
info.text.h += info.text.h;
}
info.text.x = info.bounds.x + info.bounds.w / 2 - info.text.w / 2;
info.text.y += deltay;
info.thumbnail.x = info.bounds.x + info.bounds.w / 2 - info.thumbnail.w / 2;
info.thumbnail.y += deltay;
h = info.bounds.h;
}
if (h)
y += h;
else
break;
}
m_itemsPerRow = itemsPerRow;
}
invalidate();
if (view) {
view->updateView();
makeSelectedFileitemVisible();
}
}
FileList::ItemInfo FileList::calcFileItemInfo(int i) const
{
ASSERT(i >= 0 && i < int(m_list.size()));
const bool withThumbnails = hasThumbnailsPerItem();
IFileItem* fi = m_list[i];
int len = 0;
if (fi->isFolder() && isListView()) {
auto theme = SkinTheme::get(this);
len += theme->parts.folderIconSmall()->bitmap(0)->width() + 2 * guiscale();
}
len += font()->textLength(fi->displayName().c_str());
int textHeight = this->textHeight() + 4 * guiscale();
int rowHeight = textHeight + (withThumbnails ? 8 * m_zoom + 2 * guiscale() : 0);
ItemInfo info;
info.text = gfx::Rect(0, 0 + rowHeight * i, len + 4 * guiscale(), textHeight);
if (withThumbnails) {
info.thumbnail = gfx::Rect(0, info.text.y, 8 * m_zoom * guiscale(), 8 * m_zoom * guiscale());
info.text.y += info.thumbnail.h + 2 * guiscale();
}
info.bounds = info.text | info.thumbnail;
if (withThumbnails) {
info.text.x = info.bounds.x + info.bounds.w / 2 - info.text.w / 2;
info.thumbnail.x = info.bounds.x + info.bounds.w / 2 - info.thumbnail.w / 2;
}
else {
info.bounds.x = 0;
if (View* view = View::getView(this))
info.bounds.w = view->viewportBounds().w;
else
info.bounds.w = bounds().w;
}
return info;
}
FileList::ItemInfo FileList::getFileItemInfo(int i) const
{
ASSERT(i >= 0 && i < int(m_info.size()));
if (i >= 0 && i < int(m_info.size()))
return m_info[i];
else
return ItemInfo();
}
void FileList::makeSelectedFileitemVisible()
{
int i = selectedIndex();
if (i < 0)
return;
View* view = View::getView(this);
gfx::Rect vp = view->viewportBounds();
gfx::Point scroll = view->viewScroll();
ItemInfo info = getFileItemInfo(i);
if (info.bounds.x + bounds().x <= vp.x)
scroll.x = info.bounds.x;
else if (info.bounds.x + bounds().x > vp.x2() - info.bounds.w)
scroll.x = info.bounds.x - vp.w + info.bounds.w;
if (info.bounds.y + bounds().y < vp.y)
scroll.y = info.bounds.y;
else if (info.bounds.y + bounds().y > vp.y2() - info.bounds.h)
scroll.y = info.bounds.y - vp.h + info.bounds.h;
view->setViewScroll(scroll);
}
void FileList::regenerateList()
{
// get the children of the current folder
m_list = m_currentFolder->children();
// filter the list by the available extensions
if (!m_exts.empty()) {
for (FileItemList::iterator it = m_list.begin(); it != m_list.end();) {
IFileItem* fileitem = *it;
if (fileitem->isHidden() && !m_showHidden)
it = m_list.erase(it);
else if (!fileitem->isFolder() && !fileitem->hasExtension(m_exts)) {
it = m_list.erase(it);
}
else
++it;
}
}
recalcAllFileItemInfo();
if (m_multiselect && !m_list.empty()) {
m_selectedItems.resize(m_list.size());
deselectedFileItems();
}
else
m_selectedItems.clear();
}
int FileList::selectedIndex() const
{
for (auto it = m_list.begin(), end = m_list.end(); it != end; ++it) {
if (*it == m_selected)
return it - m_list.begin();
}
return -1;
}
void FileList::selectIndex(int index)
{
IFileItem* oldSelected = m_selected;
m_selected = m_list.at(index);
deselectedFileItems();
if (oldSelected != m_selected) {
makeSelectedFileitemVisible();
invalidate();
// Emit "FileSelected" event.
onFileSelected();
}
delayThumbnailGenerationForSelectedItem();
}
void FileList::generateThumbnailForFileItem(IFileItem* fi)
{
if (fi && fi->needThumbnail() && animation() == ANI_NONE) {
auto it = std::find(m_generateThumbnailsForTheseItems.begin(),
m_generateThumbnailsForTheseItems.end(),
fi);
if (it != m_generateThumbnailsForTheseItems.end())
m_generateThumbnailsForTheseItems.erase(it);
m_generateThumbnailsForTheseItems.push_front(fi);
}
}
void FileList::delayThumbnailGenerationForSelectedItem()
{
if (m_selected && !m_selected->isFolder() && !m_selected->getThumbnail()) {
m_itemToGenerateThumbnail = m_selected;
m_generateThumbnailTimer.start();
}
}
void FileList::onAnimationStop(int animation)
{
if (animation == ANI_ZOOM)
setZoom(m_toZoom);
}
void FileList::onAnimationFrame()
{
if (animation() == ANI_ZOOM)
setZoom(inbetween(m_fromZoom, m_toZoom, animationTime()));
}
} // namespace app