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listviewitem.rs
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listviewitem.rs
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// Copyright © SixtyFPS GmbH <info@slint-ui.com>
// SPDX-License-Identifier: GPL-3.0-only OR LicenseRef-Slint-commercial
use i_slint_core::input::FocusEventResult;
use super::*;
#[repr(C)]
#[derive(FieldOffsets, Default, SlintElement)]
#[pin]
pub struct NativeStandardListViewItem {
pub x: Property<f32>,
pub y: Property<f32>,
pub width: Property<f32>,
pub height: Property<f32>,
pub item: Property<i_slint_core::model::StandardListViewItem>,
pub index: Property<i32>,
pub is_selected: Property<bool>,
pub cached_rendering_data: CachedRenderingData,
pub has_hover: Property<bool>,
}
impl Item for NativeStandardListViewItem {
fn init(self: Pin<&Self>, _window: &WindowRc) {}
fn geometry(self: Pin<&Self>) -> Rect {
euclid::rect(self.x(), self.y(), self.width(), self.height())
}
fn layout_info(self: Pin<&Self>, orientation: Orientation, _window: &WindowRc) -> LayoutInfo {
let index: i32 = self.index();
let item = self.item();
let text: qttypes::QString = item.text.as_str().into();
let s = cpp!(unsafe [
index as "int",
text as "QString"
] -> qttypes::QSize as "QSize" {
ensure_initialized();
QStyleOptionViewItem option;
option.decorationPosition = QStyleOptionViewItem::Left;
option.decorationAlignment = Qt::AlignCenter;
option.displayAlignment = Qt::AlignLeft|Qt::AlignVCenter;
option.showDecorationSelected = qApp->style()->styleHint(QStyle::SH_ItemView_ShowDecorationSelected, nullptr, nullptr);
if (index % 2) {
option.features |= QStyleOptionViewItem::Alternate;
}
option.features |= QStyleOptionViewItem::HasDisplay;
option.text = text;
return qApp->style()->sizeFromContents(QStyle::CT_ItemViewItem, &option, QSize{}, nullptr);
});
let min = match orientation {
Orientation::Horizontal => s.width,
Orientation::Vertical => s.height,
} as f32;
LayoutInfo { min, preferred: min, ..LayoutInfo::default() }
}
fn input_event_filter_before_children(
self: Pin<&Self>,
_: MouseEvent,
_window: &WindowRc,
_self_rc: &ItemRc,
) -> InputEventFilterResult {
InputEventFilterResult::ForwardAndIgnore
}
fn input_event(
self: Pin<&Self>,
_event: MouseEvent,
_window: &WindowRc,
_self_rc: &i_slint_core::items::ItemRc,
) -> InputEventResult {
InputEventResult::EventIgnored
}
fn key_event(self: Pin<&Self>, _: &KeyEvent, _window: &WindowRc) -> KeyEventResult {
KeyEventResult::EventIgnored
}
fn focus_event(self: Pin<&Self>, _: &FocusEvent, _window: &WindowRc) -> FocusEventResult {
FocusEventResult::FocusIgnored
}
fn_render! { this dpr size painter widget initial_state =>
let index: i32 = this.index();
let is_selected: bool = this.is_selected();
let has_hover: bool = this.has_hover();
let item = this.item();
let text: qttypes::QString = item.text.as_str().into();
cpp!(unsafe [
painter as "QPainterPtr*",
widget as "QWidget*",
size as "QSize",
dpr as "float",
index as "int",
is_selected as "bool",
has_hover as "bool",
text as "QString",
initial_state as "int"
] {
QStyleOptionViewItem option;
option.state |= QStyle::State(initial_state);
option.rect = QRect(QPoint(), size / dpr);
option.state = QStyle::State_Enabled;
if (is_selected) {
option.state |= QStyle::State_Selected;
}
if (has_hover) {
option.state |= QStyle::State_MouseOver;
}
option.decorationPosition = QStyleOptionViewItem::Left;
option.decorationAlignment = Qt::AlignCenter;
option.displayAlignment = Qt::AlignLeft|Qt::AlignVCenter;
option.showDecorationSelected = qApp->style()->styleHint(QStyle::SH_ItemView_ShowDecorationSelected, nullptr, nullptr);
if (index % 2) {
option.features |= QStyleOptionViewItem::Alternate;
}
option.features |= QStyleOptionViewItem::HasDisplay;
option.text = text;
// CE_ItemViewItem in QCommonStyle calls setClipRect on the painter and replace the clips. So we need to cheat.
auto engine = (*painter)->paintEngine();
auto old_clip = engine->systemClip();
auto new_clip = old_clip & ((*painter)->clipRegion() * (*painter)->transform());
if (new_clip.isEmpty()) return;
engine->setSystemClip(new_clip);
qApp->style()->drawPrimitive(QStyle::PE_PanelItemViewRow, &option, painter->get(), widget);
qApp->style()->drawControl(QStyle::CE_ItemViewItem, &option, painter->get(), widget);
engine->setSystemClip(old_clip);
});
}
}
impl ItemConsts for NativeStandardListViewItem {
const cached_rendering_data_offset: const_field_offset::FieldOffset<Self, CachedRenderingData> =
Self::FIELD_OFFSETS.cached_rendering_data.as_unpinned_projection();
}
declare_item_vtable! {
fn slint_get_NativeStandardListViewItemVTable() -> NativeStandardListViewItemVTable for NativeStandardListViewItem
}