tdesktop/Telegram/SourceFiles/ui/widgets/multi_select.cpp

1078 lines
26 KiB
C++

/*
This file is part of Telegram Desktop,
the official desktop application for the Telegram messaging service.
For license and copyright information please follow this link:
https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
*/
#include "ui/widgets/multi_select.h"
#include "ui/widgets/buttons.h"
#include "ui/widgets/input_fields.h"
#include "ui/widgets/scroll_area.h"
#include "ui/effects/animations.h"
#include "ui/effects/cross_animation.h"
#include "ui/text/text_options.h"
#include "ui/painter.h"
#include "ui/ui_utility.h"
#include "lang/lang_keys.h"
#include <set>
namespace Ui {
namespace {
constexpr int kWideScale = 3;
class Item {
public:
Item(
const style::MultiSelectItem &st,
uint64 id,
const QString &text,
style::color color,
MultiSelect::PaintRoundImage &&paintRoundImage);
uint64 id() const {
return _id;
}
int getWidth() const {
return _width;
}
QRect rect() const {
return QRect(_x, _y, _width, _st.height);
}
bool isOverDelete() const {
return _overDelete;
}
void setActive(bool active) {
_active = active;
}
void setPosition(int x, int y, int outerWidth, int maxVisiblePadding);
QRect paintArea(int outerWidth) const;
void setUpdateCallback(Fn<void()> updateCallback) {
_updateCallback = updateCallback;
}
void setText(const QString &text);
void paint(Painter &p, int outerWidth);
void mouseMoveEvent(QPoint point);
void leaveEvent();
void showAnimated() {
setVisibleAnimated(true);
}
void hideAnimated() {
setVisibleAnimated(false);
}
bool hideFinished() const {
return (_hiding && !_visibility.animating());
}
private:
void setOver(bool over);
void paintOnce(Painter &p, int x, int y, int outerWidth);
void paintDeleteButton(
Painter &p,
int x,
int y,
int outerWidth,
float64 overOpacity);
bool paintCached(Painter &p, int x, int y, int outerWidth);
void prepareCache();
void setVisibleAnimated(bool visible);
const style::MultiSelectItem &_st;
uint64 _id;
struct SlideAnimation {
SlideAnimation(
Fn<void()> updateCallback,
int fromX,
int toX,
int y,
float64 duration)
: fromX(fromX)
, toX(toX)
, y(y) {
x.start(updateCallback, fromX, toX, duration);
}
Ui::Animations::Simple x;
int fromX, toX;
int y;
};
std::vector<SlideAnimation> _copies;
int _x = -1;
int _y = -1;
int _width = 0;
Text::String _text;
style::color _color;
bool _over = false;
QPixmap _cache;
Ui::Animations::Simple _visibility;
Ui::Animations::Simple _overOpacity;
bool _overDelete = false;
bool _active = false;
MultiSelect::PaintRoundImage _paintRoundImage;
Fn<void()> _updateCallback;
bool _hiding = false;
};
Item::Item(
const style::MultiSelectItem &st,
uint64 id,
const QString &text,
style::color color,
MultiSelect::PaintRoundImage &&paintRoundImage)
: _st(st)
, _id(id)
, _color(color)
, _paintRoundImage(std::move(paintRoundImage)) {
setText(text);
}
void Item::setText(const QString &text) {
_text.setText(_st.style, text, NameTextOptions());
_width = _st.height
+ _st.padding.left()
+ _text.maxWidth()
+ _st.padding.right();
accumulate_min(_width, _st.maxWidth);
}
void Item::paint(Painter &p, int outerWidth) {
if (!_cache.isNull() && !_visibility.animating()) {
if (_hiding) {
return;
} else {
_cache = QPixmap();
}
}
if (_copies.empty()) {
paintOnce(p, _x, _y, outerWidth);
} else {
for (auto i = _copies.begin(), e = _copies.end(); i != e;) {
auto x = qRound(i->x.value(_x));
auto y = i->y;
auto animating = i->x.animating();
if (animating || (y == _y)) {
paintOnce(p, x, y, outerWidth);
}
if (animating) {
++i;
} else {
i = _copies.erase(i);
e = _copies.end();
}
}
}
}
void Item::paintOnce(Painter &p, int x, int y, int outerWidth) {
if (!_cache.isNull()) {
paintCached(p, x, y, outerWidth);
return;
}
auto radius = _st.height / 2;
auto inner = style::rtlrect(
x + radius,
y,
_width - radius,
_st.height,
outerWidth);
auto clipEnabled = p.hasClipping();
auto clip = clipEnabled ? p.clipRegion() : QRegion();
p.setClipRect(inner);
p.setPen(Qt::NoPen);
p.setBrush(_active ? _st.textActiveBg : _st.textBg);
{
PainterHighQualityEnabler hq(p);
p.drawRoundedRect(
style::rtlrect(x, y, _width, _st.height, outerWidth),
radius,
radius);
}
if (clipEnabled) {
p.setClipRegion(clip);
} else {
p.setClipping(false);
}
auto overOpacity = _overOpacity.value(_over ? 1. : 0.);
if (overOpacity < 1.) {
_paintRoundImage(p, x, y, outerWidth, _st.height);
}
if (overOpacity > 0.) {
paintDeleteButton(p, x, y, outerWidth, overOpacity);
}
auto textLeft = _st.height + _st.padding.left();
auto textWidth = _width - textLeft - _st.padding.right();
p.setPen(_active ? _st.textActiveFg : _st.textFg);
_text.drawLeftElided(
p,
x + textLeft,
y + _st.padding.top(),
textWidth,
outerWidth);
}
void Item::paintDeleteButton(
Painter &p,
int x,
int y,
int outerWidth,
float64 overOpacity) {
p.setOpacity(overOpacity);
p.setPen(Qt::NoPen);
p.setBrush(_color);
{
PainterHighQualityEnabler hq(p);
p.drawEllipse(
style::rtlrect(x, y, _st.height, _st.height, outerWidth));
}
CrossAnimation::paint(
p,
_st.deleteCross,
_st.deleteFg,
x,
y,
outerWidth,
overOpacity);
p.setOpacity(1.);
}
bool Item::paintCached(Painter &p, int x, int y, int outerWidth) {
PainterHighQualityEnabler hq(p);
auto opacity = _visibility.value(_hiding ? 0. : 1.);
auto height = opacity * _cache.height() / _cache.devicePixelRatio();
auto width = opacity * _cache.width() / _cache.devicePixelRatio();
p.setOpacity(opacity);
p.drawPixmap(
style::rtlrect(
x + (_width - width) / 2.,
y + (_st.height - height) / 2.,
width,
height,
outerWidth),
_cache);
p.setOpacity(1.);
return true;
}
void Item::mouseMoveEvent(QPoint point) {
if (!_cache.isNull()) {
return;
}
_overDelete = QRect(0, 0, _st.height, _st.height).contains(point);
setOver(true);
}
void Item::leaveEvent() {
_overDelete = false;
setOver(false);
}
void Item::setPosition(int x, int y, int outerWidth, int maxVisiblePadding) {
if (_x >= 0 && _y >= 0 && (_x != x || _y != y)) {
// Make an animation if it is not the first setPosition().
auto found = false;
auto leftHidden = -_width - maxVisiblePadding;
auto rightHidden = outerWidth + maxVisiblePadding;
for (auto i = _copies.begin(), e = _copies.end(); i != e;) {
if (i->x.animating()) {
if (i->y == y) {
i->x.start(_updateCallback, i->toX, x, _st.duration);
found = true;
} else {
i->x.start(
_updateCallback,
i->fromX,
(i->toX > i->fromX) ? rightHidden : leftHidden,
_st.duration);
}
++i;
} else {
i = _copies.erase(i);
e = _copies.end();
}
}
if (_copies.empty()) {
if (_y == y) {
auto copy = SlideAnimation(
_updateCallback,
_x,
x,
_y,
_st.duration);
_copies.push_back(std::move(copy));
} else {
auto copyHiding = SlideAnimation(
_updateCallback,
_x,
(y > _y) ? rightHidden : leftHidden,
_y,
_st.duration);
_copies.push_back(std::move(copyHiding));
auto copyShowing = SlideAnimation(
_updateCallback,
(y > _y) ? leftHidden : rightHidden,
x,
y,
_st.duration);
_copies.push_back(std::move(copyShowing));
}
} else if (!found) {
auto copy = SlideAnimation(
_updateCallback,
(y > _y) ? leftHidden : rightHidden,
x,
y,
_st.duration);
_copies.push_back(std::move(copy));
}
}
_x = x;
_y = y;
}
QRect Item::paintArea(int outerWidth) const {
if (_copies.empty()) {
return rect();
}
auto yMin = 0, yMax = 0;
for (const auto &copy : _copies) {
accumulate_max(yMax, copy.y);
if (yMin) {
accumulate_min(yMin, copy.y);
} else {
yMin = copy.y;
}
}
return QRect(0, yMin, outerWidth, yMax - yMin + _st.height);
}
void Item::prepareCache() {
if (!_cache.isNull()) return;
Assert(!_visibility.animating());
auto cacheWidth = _width * kWideScale * style::DevicePixelRatio();
auto cacheHeight = _st.height * kWideScale * style::DevicePixelRatio();
auto data = QImage(
cacheWidth,
cacheHeight,
QImage::Format_ARGB32_Premultiplied);
data.fill(Qt::transparent);
data.setDevicePixelRatio(style::DevicePixelRatio());
{
Painter p(&data);
paintOnce(
p,
_width * (kWideScale - 1) / 2,
_st.height * (kWideScale - 1) / 2,
cacheWidth);
}
_cache = Ui::PixmapFromImage(std::move(data));
}
void Item::setVisibleAnimated(bool visible) {
_hiding = !visible;
prepareCache();
auto from = visible ? 0. : 1.;
auto to = visible ? 1. : 0.;
auto transition = visible ? anim::bumpy(1.0625) : anim::linear;
_visibility.start(_updateCallback, from, to, _st.duration, transition);
}
void Item::setOver(bool over) {
if (over != _over) {
_over = over;
_overOpacity.start(
_updateCallback,
_over ? 0. : 1.,
_over ? 1. : 0.,
_st.duration);
}
}
} // namespace
class MultiSelect::Inner : public TWidget {
public:
using ScrollCallback = Fn<void(int activeTop, int activeBottom)>;
Inner(
QWidget *parent,
const style::MultiSelect &st,
rpl::producer<QString> placeholder,
ScrollCallback callback);
QString getQuery() const;
bool setInnerFocus();
void clearQuery();
void setQueryChangedCallback(Fn<void(const QString &query)> callback);
void setSubmittedCallback(Fn<void(Qt::KeyboardModifiers)> callback);
void setCancelledCallback(Fn<void()> callback);
void addItemInBunch(std::unique_ptr<Item> item);
void finishItemsBunch(AddItemWay way);
void setItemText(uint64 itemId, const QString &text);
void setItemRemovedCallback(Fn<void(uint64 itemId)> callback);
void removeItem(uint64 itemId);
int getItemsCount() const;
QVector<uint64> getItems() const;
bool hasItem(uint64 itemId) const;
void setResizedCallback(Fn<void(int heightDelta)> callback);
~Inner();
protected:
int resizeGetHeight(int newWidth) override;
void paintEvent(QPaintEvent *e) override;
void leaveEventHook(QEvent *e) override;
void mouseMoveEvent(QMouseEvent *e) override;
void mousePressEvent(QMouseEvent *e) override;
void keyPressEvent(QKeyEvent *e) override;
private:
void submitted(Qt::KeyboardModifiers modifiers);
void cancelled();
void queryChanged();
void fieldFocused();
void computeItemsGeometry(int newWidth);
void updateItemsGeometry();
void updateFieldGeometry();
void updateHasAnyItems(bool hasAnyItems);
void updateSelection(QPoint mousePosition);
void clearSelection() {
updateSelection(QPoint(-1, -1));
}
void updateCursor();
void updateHeightStep();
void finishHeightAnimation();
enum class ChangeActiveWay {
Default,
SkipSetFocus,
};
void setActiveItem(
int active,
ChangeActiveWay skipSetFocus = ChangeActiveWay::Default);
void setActiveItemPrevious();
void setActiveItemNext();
QMargins itemPaintMargins() const;
const style::MultiSelect &_st;
Ui::Animations::Simple _iconOpacity;
ScrollCallback _scrollCallback;
std::set<uint64> _idsMap;
std::vector<std::unique_ptr<Item>> _items;
std::set<std::unique_ptr<Item>> _removingItems;
int _selected = -1;
int _active = -1;
bool _overDelete = false;
int _fieldLeft = 0;
int _fieldTop = 0;
int _fieldWidth = 0;
object_ptr<Ui::InputField> _field;
object_ptr<Ui::CrossButton> _cancel;
int _newHeight = 0;
Ui::Animations::Simple _height;
Fn<void(const QString &query)> _queryChangedCallback;
Fn<void(Qt::KeyboardModifiers)> _submittedCallback;
Fn<void()> _cancelledCallback;
Fn<void(uint64 itemId)> _itemRemovedCallback;
Fn<void(int heightDelta)> _resizedCallback;
};
MultiSelect::MultiSelect(
QWidget *parent,
const style::MultiSelect &st,
rpl::producer<QString> placeholder)
: RpWidget(parent)
, _st(st)
, _scroll(this, _st.scroll) {
const auto scrollCallback = [=](int activeTop, int activeBottom) {
scrollTo(activeTop, activeBottom);
};
_inner = _scroll->setOwnedWidget(object_ptr<Inner>(
this,
st,
std::move(placeholder),
scrollCallback));
_scroll->installEventFilter(this);
_inner->setResizedCallback([this](int innerHeightDelta) {
auto newHeight = resizeGetHeight(width());
if (innerHeightDelta > 0) {
_scroll->scrollToY(_scroll->scrollTop() + innerHeightDelta);
}
if (newHeight != height()) {
resize(width(), newHeight);
if (_resizedCallback) {
_resizedCallback();
}
}
});
_inner->setQueryChangedCallback([this](const QString &query) {
_scroll->scrollToY(_scroll->scrollTopMax());
if (_queryChangedCallback) {
_queryChangedCallback(query);
}
});
setAttribute(Qt::WA_OpaquePaintEvent);
auto defaultWidth = _st.item.maxWidth + _st.fieldMinWidth + _st.fieldCancelSkip;
resizeToWidth(_st.padding.left() + defaultWidth + _st.padding.right());
}
bool MultiSelect::eventFilter(QObject *o, QEvent *e) {
if (o == _scroll && e->type() == QEvent::KeyPress) {
e->ignore();
return true;
}
return false;
}
void MultiSelect::scrollTo(int activeTop, int activeBottom) {
auto scrollTop = _scroll->scrollTop();
auto scrollHeight = _scroll->height();
auto scrollBottom = scrollTop + scrollHeight;
if (scrollTop > activeTop) {
_scroll->scrollToY(activeTop);
} else if (scrollBottom < activeBottom) {
_scroll->scrollToY(activeBottom - scrollHeight);
}
}
void MultiSelect::setQueryChangedCallback(Fn<void(const QString &query)> callback) {
_queryChangedCallback = std::move(callback);
}
void MultiSelect::setSubmittedCallback(Fn<void(Qt::KeyboardModifiers)> callback) {
_inner->setSubmittedCallback(std::move(callback));
}
void MultiSelect::setCancelledCallback(Fn<void()> callback) {
_inner->setCancelledCallback(std::move(callback));
}
void MultiSelect::setResizedCallback(Fn<void()> callback) {
_resizedCallback = std::move(callback);
}
void MultiSelect::setInnerFocus() {
if (_inner->setInnerFocus()) {
_scroll->scrollToY(_scroll->scrollTopMax());
}
}
void MultiSelect::clearQuery() {
_inner->clearQuery();
}
QString MultiSelect::getQuery() const {
return _inner->getQuery();
}
void MultiSelect::addItem(uint64 itemId, const QString &text, style::color color, PaintRoundImage paintRoundImage, AddItemWay way) {
addItemInBunch(itemId, text, color, std::move(paintRoundImage));
_inner->finishItemsBunch(way);
}
void MultiSelect::addItemInBunch(uint64 itemId, const QString &text, style::color color, PaintRoundImage paintRoundImage) {
_inner->addItemInBunch(std::make_unique<Item>(_st.item, itemId, text, color, std::move(paintRoundImage)));
}
void MultiSelect::finishItemsBunch() {
_inner->finishItemsBunch(AddItemWay::SkipAnimation);
}
void MultiSelect::setItemRemovedCallback(Fn<void(uint64 itemId)> callback) {
_inner->setItemRemovedCallback(std::move(callback));
}
void MultiSelect::removeItem(uint64 itemId) {
_inner->removeItem(itemId);
}
int MultiSelect::getItemsCount() const {
return _inner->getItemsCount();
}
QVector<uint64> MultiSelect::getItems() const {
return _inner->getItems();
}
bool MultiSelect::hasItem(uint64 itemId) const {
return _inner->hasItem(itemId);
}
int MultiSelect::resizeGetHeight(int newWidth) {
if (newWidth != _inner->width()) {
_inner->resizeToWidth(newWidth);
}
auto newHeight = qMin(_inner->height(), _st.maxHeight);
_scroll->setGeometryToLeft(0, 0, newWidth, newHeight);
return newHeight;
}
MultiSelect::Inner::Inner(
QWidget *parent,
const style::MultiSelect &st,
rpl::producer<QString> placeholder,
ScrollCallback callback)
: TWidget(parent)
, _st(st)
, _scrollCallback(std::move(callback))
, _field(this, _st.field, std::move(placeholder))
, _cancel(this, _st.fieldCancel) {
_field->customUpDown(true);
connect(_field, &Ui::InputField::focused, [=] { fieldFocused(); });
connect(_field, &Ui::InputField::changed, [=] { queryChanged(); });
connect(_field, &Ui::InputField::submitted, this, &Inner::submitted);
connect(_field, &Ui::InputField::cancelled, this, &Inner::cancelled);
_cancel->setClickedCallback([=] {
clearQuery();
_field->setFocus();
});
setMouseTracking(true);
}
void MultiSelect::Inner::queryChanged() {
auto query = getQuery();
_cancel->toggle(!query.isEmpty(), anim::type::normal);
updateFieldGeometry();
if (_queryChangedCallback) {
_queryChangedCallback(query);
}
}
QString MultiSelect::Inner::getQuery() const {
return _field->getLastText().trimmed();
}
bool MultiSelect::Inner::setInnerFocus() {
if (_active >= 0) {
setFocus();
} else if (!_field->hasFocus()) {
_field->setFocusFast();
return true;
}
return false;
}
void MultiSelect::Inner::clearQuery() {
_field->setText(QString());
}
void MultiSelect::Inner::setQueryChangedCallback(Fn<void(const QString &query)> callback) {
_queryChangedCallback = std::move(callback);
}
void MultiSelect::Inner::setSubmittedCallback(
Fn<void(Qt::KeyboardModifiers)> callback) {
_submittedCallback = std::move(callback);
}
void MultiSelect::Inner::setCancelledCallback(Fn<void()> callback) {
_cancelledCallback = std::move(callback);
}
void MultiSelect::Inner::updateFieldGeometry() {
auto fieldFinalWidth = _fieldWidth;
if (_cancel->toggled()) {
fieldFinalWidth -= _st.fieldCancelSkip;
}
_field->resizeToWidth(fieldFinalWidth);
_field->moveToLeft(_st.padding.left() + _fieldLeft, _st.padding.top() + _fieldTop);
}
void MultiSelect::Inner::updateHasAnyItems(bool hasAnyItems) {
_field->setPlaceholderHidden(hasAnyItems);
updateCursor();
_iconOpacity.start([this] {
rtlupdate(_st.padding.left(), _st.padding.top(), _st.fieldIcon.width(), _st.fieldIcon.height());
}, hasAnyItems ? 1. : 0., hasAnyItems ? 0. : 1., _st.item.duration);
}
void MultiSelect::Inner::updateCursor() {
setCursor(_items.empty() ? style::cur_text : (_overDelete ? style::cur_pointer : style::cur_default));
}
void MultiSelect::Inner::setActiveItem(int active, ChangeActiveWay skipSetFocus) {
if (_active == active) return;
if (_active >= 0) {
Assert(_active < _items.size());
_items[_active]->setActive(false);
}
_active = active;
if (_active >= 0) {
Assert(_active < _items.size());
_items[_active]->setActive(true);
}
if (skipSetFocus != ChangeActiveWay::SkipSetFocus) {
setInnerFocus();
}
if (_scrollCallback) {
auto rect = (_active >= 0) ? _items[_active]->rect() : _field->geometry().translated(-_st.padding.left(), -_st.padding.top());
_scrollCallback(rect.y(), rect.y() + rect.height() + _st.padding.top() + _st.padding.bottom());
}
update();
}
void MultiSelect::Inner::setActiveItemPrevious() {
if (_active > 0) {
setActiveItem(_active - 1);
} else if (_active < 0 && !_items.empty()) {
setActiveItem(_items.size() - 1);
}
}
void MultiSelect::Inner::setActiveItemNext() {
if (_active >= 0 && _active + 1 < _items.size()) {
setActiveItem(_active + 1);
} else {
setActiveItem(-1);
}
}
int MultiSelect::Inner::resizeGetHeight(int newWidth) {
computeItemsGeometry(newWidth);
updateFieldGeometry();
auto cancelLeft = _fieldLeft + _fieldWidth + _st.padding.right() - _cancel->width();
auto cancelTop = _fieldTop - _st.padding.top();
_cancel->moveToLeft(_st.padding.left() + cancelLeft, _st.padding.top() + cancelTop);
return _field->y() + _field->height() + _st.padding.bottom();
}
void MultiSelect::Inner::paintEvent(QPaintEvent *e) {
Painter p(this);
auto paintRect = e->rect();
p.fillRect(paintRect, _st.bg);
auto offset = QPoint(
style::RightToLeft() ? _st.padding.right() : _st.padding.left(),
_st.padding.top());
p.translate(offset);
paintRect.translate(-offset);
auto outerWidth = width() - _st.padding.left() - _st.padding.right();
auto iconOpacity = _iconOpacity.value(_items.empty() ? 1. : 0.);
if (iconOpacity > 0.) {
p.setOpacity(iconOpacity);
_st.fieldIcon.paint(p, 0, 0, outerWidth);
p.setOpacity(1.);
}
auto checkRect = myrtlrect(paintRect);
auto paintMargins = itemPaintMargins();
for (auto i = _removingItems.begin(), e = _removingItems.end(); i != e;) {
auto &item = *i;
auto itemRect = item->paintArea(outerWidth);
itemRect = itemRect.marginsAdded(paintMargins);
if (checkRect.intersects(itemRect)) {
item->paint(p, outerWidth);
}
if (item->hideFinished()) {
i = _removingItems.erase(i);
e = _removingItems.end();
} else {
++i;
}
}
for (const auto &item : _items) {
auto itemRect = item->paintArea(outerWidth);
itemRect = itemRect.marginsAdded(paintMargins);
if (checkRect.y() + checkRect.height() <= itemRect.y()) {
break;
} else if (checkRect.intersects(itemRect)) {
item->paint(p, outerWidth);
}
}
}
QMargins MultiSelect::Inner::itemPaintMargins() const {
return {
qMax(_st.itemSkip, _st.padding.left()),
_st.itemSkip,
qMax(_st.itemSkip, _st.padding.right()),
_st.itemSkip,
};
}
void MultiSelect::Inner::leaveEventHook(QEvent *e) {
clearSelection();
}
void MultiSelect::Inner::mouseMoveEvent(QMouseEvent *e) {
updateSelection(e->pos());
}
void MultiSelect::Inner::keyPressEvent(QKeyEvent *e) {
if (_active >= 0) {
Expects(_active < _items.size());
if (e->key() == Qt::Key_Delete || e->key() == Qt::Key_Backspace) {
auto itemId = _items[_active]->id();
setActiveItemNext();
removeItem(itemId);
} else if (e->key() == Qt::Key_Left) {
setActiveItemPrevious();
} else if (e->key() == Qt::Key_Right) {
setActiveItemNext();
} else if (e->key() == Qt::Key_Escape) {
setActiveItem(-1);
} else {
e->ignore();
}
} else if (e->key() == Qt::Key_Left || e->key() == Qt::Key_Backspace) {
setActiveItemPrevious();
} else {
e->ignore();
}
}
void MultiSelect::Inner::submitted(Qt::KeyboardModifiers modifiers) {
if (_submittedCallback) {
_submittedCallback(modifiers);
}
}
void MultiSelect::Inner::cancelled() {
if (_cancelledCallback) {
_cancelledCallback();
}
}
void MultiSelect::Inner::fieldFocused() {
setActiveItem(-1, ChangeActiveWay::SkipSetFocus);
}
void MultiSelect::Inner::updateSelection(QPoint mousePosition) {
auto point = myrtlpoint(mousePosition) - QPoint(_st.padding.left(), _st.padding.right());
auto selected = -1;
for (auto i = 0, count = int(_items.size()); i != count; ++i) {
auto itemRect = _items[i]->rect();
if (itemRect.y() > point.y()) {
break;
} else if (itemRect.contains(point)) {
point -= itemRect.topLeft();
selected = i;
break;
}
}
if (_selected != selected) {
if (_selected >= 0) {
Assert(_selected < _items.size());
_items[_selected]->leaveEvent();
}
_selected = selected;
update();
}
auto overDelete = false;
if (_selected >= 0) {
_items[_selected]->mouseMoveEvent(point);
overDelete = _items[_selected]->isOverDelete();
}
if (_overDelete != overDelete) {
_overDelete = overDelete;
updateCursor();
}
}
void MultiSelect::Inner::mousePressEvent(QMouseEvent *e) {
if (_overDelete) {
Expects(_selected >= 0);
Expects(_selected < _items.size());
removeItem(_items[_selected]->id());
} else if (_selected >= 0) {
setActiveItem(_selected);
} else {
setInnerFocus();
}
}
void MultiSelect::Inner::addItemInBunch(std::unique_ptr<Item> item) {
auto wasEmpty = _items.empty();
item->setUpdateCallback([this, item = item.get()] {
auto itemRect = item->paintArea(width() - _st.padding.left() - _st.padding.top());
itemRect = itemRect.translated(_st.padding.left(), _st.padding.top());
itemRect = itemRect.marginsAdded(itemPaintMargins());
rtlupdate(itemRect);
});
_idsMap.insert(item->id());
_items.push_back(std::move(item));
if (wasEmpty) {
updateHasAnyItems(true);
}
}
void MultiSelect::Inner::finishItemsBunch(AddItemWay way) {
updateItemsGeometry();
if (way != AddItemWay::SkipAnimation) {
_items.back()->showAnimated();
} else {
_field->finishAnimating();
finishHeightAnimation();
}
}
void MultiSelect::Inner::computeItemsGeometry(int newWidth) {
newWidth -= _st.padding.left() + _st.padding.right();
auto itemLeft = 0;
auto itemTop = 0;
auto widthLeft = newWidth;
auto maxVisiblePadding = qMax(_st.padding.left(), _st.padding.right());
for (const auto &item : _items) {
auto itemWidth = item->getWidth();
Assert(itemWidth <= newWidth);
if (itemWidth > widthLeft) {
itemLeft = 0;
itemTop += _st.item.height + _st.itemSkip;
widthLeft = newWidth;
}
item->setPosition(itemLeft, itemTop, newWidth, maxVisiblePadding);
itemLeft += itemWidth + _st.itemSkip;
widthLeft -= itemWidth + _st.itemSkip;
}
auto fieldMinWidth = _st.fieldMinWidth + _st.fieldCancelSkip;
Assert(fieldMinWidth <= newWidth);
if (fieldMinWidth > widthLeft) {
_fieldLeft = 0;
_fieldTop = itemTop + _st.item.height + _st.itemSkip;
} else {
_fieldLeft = itemLeft + (_items.empty() ? _st.fieldIconSkip : 0);
_fieldTop = itemTop;
}
_fieldWidth = newWidth - _fieldLeft;
}
void MultiSelect::Inner::updateItemsGeometry() {
auto newHeight = resizeGetHeight(width());
if (newHeight == _newHeight) return;
_newHeight = newHeight;
_height.start([this] { updateHeightStep(); }, height(), _newHeight, _st.item.duration);
}
void MultiSelect::Inner::updateHeightStep() {
auto newHeight = qRound(_height.value(_newHeight));
if (auto heightDelta = newHeight - height()) {
resize(width(), newHeight);
if (_resizedCallback) {
_resizedCallback(heightDelta);
}
update();
}
}
void MultiSelect::Inner::finishHeightAnimation() {
_height.stop();
updateHeightStep();
}
void MultiSelect::Inner::setItemText(uint64 itemId, const QString &text) {
for (const auto &item : _items) {
if (item->id() == itemId) {
item->setText(text);
updateItemsGeometry();
return;
}
}
}
void MultiSelect::Inner::setItemRemovedCallback(Fn<void(uint64 itemId)> callback) {
_itemRemovedCallback = std::move(callback);
}
void MultiSelect::Inner::setResizedCallback(Fn<void(int heightDelta)> callback) {
_resizedCallback = std::move(callback);
}
void MultiSelect::Inner::removeItem(uint64 itemId) {
auto found = false;
for (auto i = 0, count = int(_items.size()); i != count; ++i) {
auto &item = _items[i];
if (item->id() == itemId) {
found = true;
clearSelection();
item->hideAnimated();
_idsMap.erase(item->id());
_removingItems.insert(std::move(item));
_items.erase(_items.begin() + i);
if (_active == i) {
_active = -1;
} else if (_active > i) {
--_active;
}
updateItemsGeometry();
if (_items.empty()) {
updateHasAnyItems(false);
}
auto point = QCursor::pos();
if (auto parent = parentWidget()) {
if (parent->rect().contains(parent->mapFromGlobal(point))) {
updateSelection(mapFromGlobal(point));
}
}
break;
}
}
if (found && _itemRemovedCallback) {
_itemRemovedCallback(itemId);
}
setInnerFocus();
}
int MultiSelect::Inner::getItemsCount() const {
return _items.size();
}
QVector<uint64> MultiSelect::Inner::getItems() const {
auto result = QVector<uint64>();
result.reserve(_items.size());
for (const auto &item : _items) {
result.push_back(item->id());
}
return result;
}
bool MultiSelect::Inner::hasItem(uint64 itemId) const {
return _idsMap.find(itemId) != _idsMap.cend();
}
MultiSelect::Inner::~Inner() = default;
} // namespace Ui