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slint/sixtyfps_runtime/rendering_backends/qt/qt_window.rs
Simon Hausmann 457ae53cde qt renderer: Fix difference between font metrics and rendering 
When the widget itself is part of a hierarchy and some parent widget defines
font properties (such as weight, etc.) that aren't defined in .60, we would
inherit those for rendering, but not when measuring.

Since when measuring we don't have a widget, this patch disables all font
property merging from the widget hierarchy.
2021-07-20 13:33:25 +02:00

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/* LICENSE BEGIN
This file is part of the SixtyFPS Project -- https://sixtyfps.io
Copyright (c) 2021 Olivier Goffart <olivier.goffart@sixtyfps.io>
Copyright (c) 2021 Simon Hausmann <simon.hausmann@sixtyfps.io>
SPDX-License-Identifier: GPL-3.0-only
This file is also available under commercial licensing terms.
Please contact info@sixtyfps.io for more information.
LICENSE END */
use cpp::*;
use items::{ImageFit, TextHorizontalAlignment, TextVerticalAlignment};
use sixtyfps_corelib::graphics::{Brush, FontRequest, Image, Point, Rect, RenderingCache, Size};
use sixtyfps_corelib::input::{InternalKeyCode, KeyEvent, KeyEventType, MouseEvent};
use sixtyfps_corelib::item_rendering::{CachedRenderingData, ItemRenderer};
use sixtyfps_corelib::items::{self, FillRule, ItemRef, TextOverflow, TextWrap};
use sixtyfps_corelib::layout::Orientation;
use sixtyfps_corelib::slice::Slice;
use sixtyfps_corelib::window::PlatformWindow;
use sixtyfps_corelib::{component::ComponentRc, SharedString};
use sixtyfps_corelib::{ImageInner, PathData, Property};
use std::cell::RefCell;
use std::pin::Pin;
use std::ptr::NonNull;
use std::rc::{Rc, Weak};
use crate::key_generated;
cpp! {{
#include <QtWidgets/QtWidgets>
#include <QtWidgets/QGraphicsScene>
#include <QtWidgets/QGraphicsBlurEffect>
#include <QtWidgets/QGraphicsPixmapItem>
#include <QtGui/QPainter>
#include <QtGui/QPaintEngine>
#include <QtGui/QPainterPath>
#include <QtGui/QWindow>
#include <QtGui/QResizeEvent>
#include <QtGui/QTextLayout>
#include <QtGui/QImageReader>
#include <QtCore/QBasicTimer>
#include <QtCore/QTimer>
#include <QtCore/QPointer>
#include <QtCore/QBuffer>
#include <QtCore/QEvent>
#include <QtCore/QFileInfo>
#include <memory>
void ensure_initialized();
struct TimerHandler : QObject {
QBasicTimer timer;
static TimerHandler& instance() {
static TimerHandler instance;
return instance;
}
void timerEvent(QTimerEvent *event) override {
if (event->timerId() != timer.timerId()) {
QObject::timerEvent(event);
return;
}
timer.stop();
rust!(SFPS_timerEvent [] { timer_event() });
}
};
struct SixtyFPSWidget : QWidget {
void *rust_window;
SixtyFPSWidget() {
setMouseTracking(true);
setFocusPolicy(Qt::StrongFocus);
}
void paintEvent(QPaintEvent *) override {
QPainter painter(this);
painter.setClipRect(rect());
painter.setRenderHints(QPainter::Antialiasing | QPainter::SmoothPixmapTransform);
auto painter_ptr = &painter;
rust!(SFPS_paintEvent [rust_window: &QtWindow as "void*", painter_ptr: &mut QPainter as "QPainter*"] {
rust_window.paint_event(painter_ptr)
});
}
void resizeEvent(QResizeEvent *event) override {
QSize size = event->size();
rust!(SFPS_resizeEvent [rust_window: &QtWindow as "void*", size: qttypes::QSize as "QSize"] {
rust_window.resize_event(size)
});
}
void mousePressEvent(QMouseEvent *event) override {
QPoint pos = event->pos();
rust!(SFPS_mousePressEvent [rust_window: &QtWindow as "void*", pos: qttypes::QPoint as "QPoint"] {
let pos = Point::new(pos.x as _, pos.y as _);
rust_window.mouse_event(MouseEvent::MousePressed{ pos })
});
}
void mouseReleaseEvent(QMouseEvent *event) override {
QPoint pos = event->pos();
rust!(SFPS_mouseReleaseEvent [rust_window: &QtWindow as "void*", pos: qttypes::QPoint as "QPoint"] {
let pos = Point::new(pos.x as _, pos.y as _);
rust_window.mouse_event(MouseEvent::MouseReleased{ pos})
});
if (auto p = dynamic_cast<const SixtyFPSWidget*>(parent())) {
// FIXME: better way to close the popup
void *parent_window = p->rust_window;
rust!(SFPS_mouseReleaseEventPopup [parent_window: &QtWindow as "void*", pos: qttypes::QPoint as "QPoint"] {
parent_window.close_popup();
});
}
}
void mouseMoveEvent(QMouseEvent *event) override {
QPoint pos = event->pos();
rust!(SFPS_mouseMoveEvent [rust_window: &QtWindow as "void*", pos: qttypes::QPoint as "QPoint"] {
let pos = Point::new(pos.x as _, pos.y as _);
rust_window.mouse_event(MouseEvent::MouseMoved{pos})
});
}
void wheelEvent(QWheelEvent *event) override {
QPointF pos = event->position();
QPoint delta = event->pixelDelta();
if (delta.isNull()) {
delta = event->angleDelta();
}
rust!(SFPS_mouseWheelEvent [rust_window: &QtWindow as "void*", pos: qttypes::QPointF as "QPointF", delta: qttypes::QPoint as "QPoint"] {
let pos = Point::new(pos.x as _, pos.y as _);
let delta = Point::new(delta.x as _, delta.y as _);
rust_window.mouse_event(MouseEvent::MouseWheel{pos, delta})
});
}
void keyPressEvent(QKeyEvent *event) override {
uint modif = uint(event->modifiers());
QString text = event->text();
int key = event->key();
rust!(SFPS_keyPress [rust_window: &QtWindow as "void*", key: i32 as "int", text: qttypes::QString as "QString", modif: u32 as "uint"] {
rust_window.key_event(key, text.clone(), modif, false);
});
}
void keyReleaseEvent(QKeyEvent *event) override {
uint modif = uint(event->modifiers());
QString text = event->text();
int key = event->key();
rust!(SFPS_keyRelease [rust_window: &QtWindow as "void*", key: i32 as "int", text: qttypes::QString as "QString", modif: u32 as "uint"] {
rust_window.key_event(key, text.clone(), modif, true);
});
}
void customEvent(QEvent *event) override {
if (event->type() == QEvent::User) {
rust!(SFPS_updateWindowProps [rust_window: &QtWindow as "void*"]{
rust_window.self_weak.upgrade().map(|window| window.update_window_properties());
});
} else {
QWidget::customEvent(event);
}
}
QSize sizeHint() const override {
auto preferred_size = rust!(SFPS_sizeHint [rust_window: &QtWindow as "void*"] -> qttypes::QSize as "QSize" {
let component_rc = rust_window.self_weak.upgrade().unwrap().component();
let component = ComponentRc::borrow_pin(&component_rc);
let layout_info_h = component.as_ref().layout_info(Orientation::Horizontal);
let layout_info_v = component.as_ref().layout_info(Orientation::Vertical);
qttypes::QSize {
width: layout_info_h.preferred_bounded() as _,
height: layout_info_v.preferred_bounded() as _,
}
});
if (!preferred_size.isEmpty()) {
return preferred_size;
} else {
return QWidget::sizeHint();
}
}
};
}}
cpp_class! {pub unsafe struct QPainter as "QPainter"}
impl QPainter {
pub fn save_state(&mut self) {
cpp! { unsafe [self as "QPainter*"] {
self->save();
}}
}
pub fn restore_state(&mut self) {
cpp! { unsafe [self as "QPainter*"] {
self->restore();
}}
}
}
cpp_class! {pub unsafe struct QPainterPath as "QPainterPath"}
impl QPainterPath {
/*
pub fn reserve(&mut self, size: usize) {
cpp! { unsafe [self as "QPainterPath*", size as "long long"] {
self->reserve(size);
}}
}*/
pub fn move_to(&mut self, to: qttypes::QPointF) {
cpp! { unsafe [self as "QPainterPath*", to as "QPointF"] {
self->moveTo(to);
}}
}
pub fn line_to(&mut self, to: qttypes::QPointF) {
cpp! { unsafe [self as "QPainterPath*", to as "QPointF"] {
self->lineTo(to);
}}
}
pub fn quad_to(&mut self, ctrl: qttypes::QPointF, to: qttypes::QPointF) {
cpp! { unsafe [self as "QPainterPath*", ctrl as "QPointF", to as "QPointF"] {
self->quadTo(ctrl, to);
}}
}
pub fn cubic_to(
&mut self,
ctrl1: qttypes::QPointF,
ctrl2: qttypes::QPointF,
to: qttypes::QPointF,
) {
cpp! { unsafe [self as "QPainterPath*", ctrl1 as "QPointF", ctrl2 as "QPointF", to as "QPointF"] {
self->cubicTo(ctrl1, ctrl2, to);
}}
}
pub fn close(&mut self) {
cpp! { unsafe [self as "QPainterPath*"] {
self->closeSubpath();
}}
}
pub fn set_fill_rule(&mut self, rule: key_generated::Qt_FillRule) {
cpp! { unsafe [self as "QPainterPath*", rule as "Qt::FillRule" ] {
self->setFillRule(rule);
}}
}
}
cpp_class!(
pub unsafe struct QBrush as "QBrush"
);
impl std::convert::From<sixtyfps_corelib::Brush> for QBrush {
fn from(brush: sixtyfps_corelib::Brush) -> Self {
match brush {
sixtyfps_corelib::Brush::SolidColor(color) => {
let color: u32 = color.as_argb_encoded();
cpp!(unsafe [color as "QRgb"] -> QBrush as "QBrush" {
return QBrush(QColor::fromRgba(color));
})
}
sixtyfps_corelib::Brush::LinearGradient(g) => {
let (start, end) = sixtyfps_corelib::graphics::line_for_angle(g.angle());
let p1 = qttypes::QPointF { x: start.x as _, y: start.y as _ };
let p2 = qttypes::QPointF { x: end.x as _, y: end.y as _ };
cpp_class!(unsafe struct QLinearGradient as "QLinearGradient");
let mut qlg = cpp! {
unsafe [p1 as "QPointF", p2 as "QPointF"] -> QLinearGradient as "QLinearGradient" {
QLinearGradient qlg(p1, p2);
qlg.setCoordinateMode(QGradient::ObjectMode);
return qlg;
}
};
for s in g.stops() {
let pos: f32 = s.position;
let color: u32 = s.color.as_argb_encoded();
cpp! {unsafe [mut qlg as "QLinearGradient", pos as "float", color as "QRgb"] {
qlg.setColorAt(pos, QColor::fromRgba(color));
}};
}
cpp! {unsafe [qlg as "QLinearGradient"] -> QBrush as "QBrush" {
return QBrush(qlg);
}}
}
_ => QBrush::default(),
}
}
}
/// Given a position offset and an object of a given type that has x,y,width,height properties,
/// create a QRectF that fits it.
macro_rules! get_geometry {
($ty:ty, $obj:expr) => {{
type Ty = $ty;
let width = Ty::FIELD_OFFSETS.width.apply_pin($obj).get();
let height = Ty::FIELD_OFFSETS.height.apply_pin($obj).get();
if width <= 0. || height <= 0. {
return Default::default();
};
qttypes::QRectF { x: 0., y: 0., width: width as _, height: height as _ }
}};
}
fn adjust_rect_and_border_for_inner_drawing(rect: &mut qttypes::QRectF, border_width: &mut f32) {
// If the border width exceeds the width, just fill the rectangle.
*border_width = border_width.min((rect.width as f32) / 2.);
// adjust the size so that the border is drawn within the geometry
rect.x += *border_width as f64 / 2.;
rect.y += *border_width as f64 / 2.;
rect.width -= *border_width as f64;
rect.height -= *border_width as f64;
}
#[derive(Clone)]
enum QtRenderingCacheItem {
Pixmap(qttypes::QPixmap),
Invalid,
}
impl Default for QtRenderingCacheItem {
fn default() -> Self {
Self::Invalid
}
}
type QtRenderingCache = Rc<RefCell<RenderingCache<QtRenderingCacheItem>>>;
struct QtItemRenderer<'a> {
painter: &'a mut QPainter,
cache: QtRenderingCache,
default_font_properties: FontRequest,
}
impl ItemRenderer for QtItemRenderer<'_> {
fn draw_rectangle(&mut self, rect: Pin<&items::Rectangle>) {
let brush: QBrush = rect.background().into();
let rect: qttypes::QRectF = get_geometry!(items::Rectangle, rect);
let painter: &mut QPainter = &mut *self.painter;
cpp! { unsafe [painter as "QPainter*", brush as "QBrush", rect as "QRectF"] {
painter->fillRect(rect, brush);
}}
}
fn draw_border_rectangle(&mut self, rect: std::pin::Pin<&items::BorderRectangle>) {
Self::draw_rectangle_impl(
self.painter,
get_geometry!(items::BorderRectangle, rect),
rect.background(),
rect.border_color(),
rect.border_width(),
rect.border_radius(),
);
}
fn draw_image(&mut self, image: Pin<&items::ImageItem>) {
let dest_rect: qttypes::QRectF = get_geometry!(items::ImageItem, image);
self.draw_image_impl(
&image.cached_rendering_data,
items::ImageItem::FIELD_OFFSETS.source.apply_pin(image),
dest_rect,
None,
items::ImageItem::FIELD_OFFSETS.width.apply_pin(image),
items::ImageItem::FIELD_OFFSETS.height.apply_pin(image),
image.image_fit(),
None,
);
}
fn draw_clipped_image(&mut self, image: Pin<&items::ClippedImage>) {
let dest_rect: qttypes::QRectF = get_geometry!(items::ClippedImage, image);
let source_rect = qttypes::QRectF {
x: image.source_clip_x() as _,
y: image.source_clip_y() as _,
width: image.source_clip_width() as _,
height: image.source_clip_height() as _,
};
self.draw_image_impl(
&image.cached_rendering_data,
items::ClippedImage::FIELD_OFFSETS.source.apply_pin(image),
dest_rect,
Some(source_rect),
items::ClippedImage::FIELD_OFFSETS.width.apply_pin(image),
items::ClippedImage::FIELD_OFFSETS.height.apply_pin(image),
image.image_fit(),
Some(items::ClippedImage::FIELD_OFFSETS.colorize.apply_pin(image)),
);
}
fn draw_text(&mut self, text: std::pin::Pin<&items::Text>) {
let rect: qttypes::QRectF = get_geometry!(items::Text, text);
let fill_brush: QBrush = text.color().into();
let mut string: qttypes::QString = text.text().as_str().into();
let font: QFont =
get_font(text.unresolved_font_request().merge(&self.default_font_properties));
let flags = match text.horizontal_alignment() {
TextHorizontalAlignment::left => key_generated::Qt_AlignmentFlag_AlignLeft,
TextHorizontalAlignment::center => key_generated::Qt_AlignmentFlag_AlignHCenter,
TextHorizontalAlignment::right => key_generated::Qt_AlignmentFlag_AlignRight,
} | match text.vertical_alignment() {
TextVerticalAlignment::top => key_generated::Qt_AlignmentFlag_AlignTop,
TextVerticalAlignment::center => key_generated::Qt_AlignmentFlag_AlignVCenter,
TextVerticalAlignment::bottom => key_generated::Qt_AlignmentFlag_AlignBottom,
} | match text.wrap() {
TextWrap::no_wrap => 0,
TextWrap::word_wrap => key_generated::Qt_TextFlag_TextWordWrap,
};
let elide = text.overflow() == TextOverflow::elide;
let painter: &mut QPainter = &mut *self.painter;
cpp! { unsafe [painter as "QPainter*", rect as "QRectF", fill_brush as "QBrush", mut string as "QString", flags as "int", font as "QFont", elide as "bool"] {
painter->setFont(font);
painter->setPen(QPen(fill_brush, 0));
painter->setBrush(Qt::NoBrush);
if (!elide) {
painter->drawText(rect, flags, string);
} else if (!(flags & Qt::TextWordWrap)) {
QString elided;
QFontMetrics fm(font);
while (!string.isEmpty()) {
int pos = string.indexOf('\n');
if (pos < 0) {
elided += fm.elidedText(string, Qt::ElideRight, rect.width());
break;
}
QString line = string.left(pos);
elided += fm.elidedText(line, Qt::ElideRight, rect.width());
elided += '\n';
string = string.mid(pos + 1);
}
painter->drawText(rect, flags, elided);
} else {
// elide and word wrap: we need to add the elipsis manually on the last line
string.replace(QChar('\n'), QChar::LineSeparator);
QString elided = string;
QFontMetrics fm(font);
QTextLayout layout(string, font);
QTextOption options;
options.setWrapMode(QTextOption::WordWrap);
layout.setTextOption(options);
layout.setCacheEnabled(true);
layout.beginLayout();
int leading = fm.leading();
qreal height = 0;
int last_line_begin = 0, last_line_size = 0;
while (true) {
auto line = layout.createLine();
if (!line.isValid()) {
last_line_begin = string.size();
break;
}
line.setLineWidth(rect.width());
height += leading + line.height();
if (height > rect.height()) {
break;
}
last_line_begin = line.textStart();
last_line_size = line.textLength();
}
if (last_line_begin < string.size()) {
elided = string.left(last_line_begin);
QString to_elide = QStringView(string).mid(last_line_begin, last_line_size).trimmed() % QStringView(u"…");
elided += fm.elidedText(to_elide, Qt::ElideRight, rect.width());
}
painter->drawText(rect, flags, elided);
}
}}
}
fn draw_text_input(&mut self, text_input: std::pin::Pin<&items::TextInput>) {
let rect: qttypes::QRectF = get_geometry!(items::TextInput, text_input);
let fill_brush: QBrush = text_input.color().into();
let selection_foreground_color: u32 =
text_input.selection_foreground_color().as_argb_encoded();
let selection_background_color: u32 =
text_input.selection_background_color().as_argb_encoded();
let string: qttypes::QString = text_input.text().as_str().into();
let font: QFont =
get_font(text_input.unresolved_font_request().merge(&self.default_font_properties));
let flags = match text_input.horizontal_alignment() {
TextHorizontalAlignment::left => key_generated::Qt_AlignmentFlag_AlignLeft,
TextHorizontalAlignment::center => key_generated::Qt_AlignmentFlag_AlignHCenter,
TextHorizontalAlignment::right => key_generated::Qt_AlignmentFlag_AlignRight,
} | match text_input.vertical_alignment() {
TextVerticalAlignment::top => key_generated::Qt_AlignmentFlag_AlignTop,
TextVerticalAlignment::center => key_generated::Qt_AlignmentFlag_AlignVCenter,
TextVerticalAlignment::bottom => key_generated::Qt_AlignmentFlag_AlignBottom,
};
let cursor_position: i32 = text_input.cursor_position();
let anchor_position: i32 = text_input.anchor_position();
let text_cursor_width: f32 =
if text_input.cursor_visible() { text_input.text_cursor_width() } else { 0. };
let painter: &mut QPainter = &mut *self.painter;
cpp! { unsafe [
painter as "QPainter*",
rect as "QRectF",
fill_brush as "QBrush",
selection_foreground_color as "QRgb",
selection_background_color as "QRgb",
string as "QString",
flags as "int",
font as "QFont",
cursor_position as "int",
anchor_position as "int",
text_cursor_width as "float"] {
Q_UNUSED(flags); // FIXME
QTextLayout layout(string, font);
layout.beginLayout();
layout.createLine();
layout.endLayout();
painter->setPen(QPen(fill_brush, 0));
QVector<QTextLayout::FormatRange> selections;
if (anchor_position != cursor_position) {
QTextCharFormat fmt;
fmt.setBackground(QColor::fromRgba(selection_background_color));
fmt.setForeground(QColor::fromRgba(selection_foreground_color));
selections << QTextLayout::FormatRange{
std::min(anchor_position, cursor_position),
std::abs(anchor_position - cursor_position),
fmt
};
}
layout.draw(painter, rect.topLeft(), selections);
if (text_cursor_width > 0) {
layout.drawCursor(painter, rect.topLeft(), cursor_position, text_cursor_width);
}
}}
}
fn draw_path(&mut self, path: Pin<&items::Path>) {
let elements = path.elements();
if matches!(elements, PathData::None) {
return;
}
// FIXME: handle width/height
//let rect: qttypes::QRectF = get_geometry!(pos, items::Path, path);
let fill_brush: QBrush = path.fill().into();
let stroke_brush: QBrush = path.stroke().into();
let stroke_width: f32 = path.stroke_width();
let (offset, path_events) = path.fitted_path_events();
let pos = qttypes::QPoint { x: offset.x as _, y: offset.y as _ };
let mut painter_path = QPainterPath::default();
painter_path.set_fill_rule(match path.fill_rule() {
FillRule::nonzero => key_generated::Qt_FillRule_WindingFill,
FillRule::evenodd => key_generated::Qt_FillRule_OddEvenFill,
});
for x in path_events.iter() {
fn to_qpointf(p: Point) -> qttypes::QPointF {
qttypes::QPointF { x: p.x as _, y: p.y as _ }
}
match x {
lyon_path::Event::Begin { at } => {
painter_path.move_to(to_qpointf(at));
}
lyon_path::Event::Line { from: _, to } => {
painter_path.line_to(to_qpointf(to));
}
lyon_path::Event::Quadratic { from: _, ctrl, to } => {
painter_path.quad_to(to_qpointf(ctrl), to_qpointf(to));
}
lyon_path::Event::Cubic { from: _, ctrl1, ctrl2, to } => {
painter_path.cubic_to(to_qpointf(ctrl1), to_qpointf(ctrl2), to_qpointf(to));
}
lyon_path::Event::End { last: _, first: _, close } => {
// FIXME: are we supposed to do something with last and first?
if close {
painter_path.close()
}
}
}
}
let painter: &mut QPainter = &mut *self.painter;
cpp! { unsafe [
painter as "QPainter*",
pos as "QPoint",
mut painter_path as "QPainterPath",
fill_brush as "QBrush",
stroke_brush as "QBrush",
stroke_width as "float"] {
painter->save();
auto cleanup = qScopeGuard([&] { painter->restore(); });
painter->translate(pos);
painter->setPen(stroke_width > 0 ? QPen(stroke_brush, stroke_width) : Qt::NoPen);
painter->setBrush(fill_brush);
painter->drawPath(painter_path);
}}
}
fn draw_box_shadow(&mut self, box_shadow: Pin<&items::BoxShadow>) {
let cached_shadow_pixmap = box_shadow
.cached_rendering_data
.ensure_up_to_date(&mut self.cache.borrow_mut(), || {
let shadow_rect = get_geometry!(items::BoxShadow, box_shadow);
let source_size = qttypes::QSize {
width: shadow_rect.width.ceil() as _,
height: shadow_rect.height.ceil() as _,
};
let mut source_image =
qttypes::QImage::new(source_size, qttypes::ImageFormat::ARGB32_Premultiplied);
source_image.fill(qttypes::QColor::from_rgba_f(0., 0., 0., 0.));
let img = &mut source_image;
let mut painter_ =
cpp!(unsafe [img as "QImage*"] -> QPainter as "QPainter" { return QPainter(img); });
Self::draw_rectangle_impl(
&mut painter_,
qttypes::QRectF { x: 0., y: 0., width: shadow_rect.width, height: shadow_rect.height },
Brush::SolidColor(box_shadow.color()),
Brush::default(),
0.,
box_shadow.border_radius(),
);
drop(painter_);
let blur_radius = box_shadow.blur();
let shadow_pixmap = if blur_radius > 0. {
cpp! {
unsafe[img as "QImage*", blur_radius as "float"] -> qttypes::QPixmap as "QPixmap" {
class PublicGraphicsBlurEffect : public QGraphicsBlurEffect {
public:
// Make public what's protected
using QGraphicsBlurEffect::draw;
};
// Need a scene for the effect source private to draw()
QGraphicsScene scene;
auto pixmap_item = scene.addPixmap(QPixmap::fromImage(*img));
auto blur_effect = new PublicGraphicsBlurEffect;
blur_effect->setBlurRadius(blur_radius);
blur_effect->setBlurHints(QGraphicsBlurEffect::QualityHint);
// takes ownership of the effect and registers the item with
// the effect as source.
pixmap_item->setGraphicsEffect(blur_effect);
QImage blurred_scene(img->width() + 2 * blur_radius, img->height() + 2 * blur_radius, QImage::Format_ARGB32_Premultiplied);
blurred_scene.fill(Qt::transparent);
QPainter p(&blurred_scene);
p.translate(blur_radius, blur_radius);
blur_effect->draw(&p);
p.end();
return QPixmap::fromImage(blurred_scene);
}}
} else {
cpp! { unsafe[img as "QImage*"] -> qttypes::QPixmap as "QPixmap" {
return QPixmap::fromImage(*img);
}}
};
QtRenderingCacheItem::Pixmap(shadow_pixmap)
});
let pixmap: &qttypes::QPixmap = match &cached_shadow_pixmap {
QtRenderingCacheItem::Pixmap(pixmap) => pixmap,
_ => return,
};
let blur_radius = box_shadow.blur();
let shadow_offset = qttypes::QPointF {
x: (box_shadow.offset_x() - blur_radius) as f64,
y: (box_shadow.offset_y() - blur_radius) as f64,
};
let painter: &mut QPainter = &mut *self.painter;
cpp! { unsafe [
painter as "QPainter*",
shadow_offset as "QPointF",
pixmap as "QPixmap*"
] {
painter->drawPixmap(shadow_offset, *pixmap);
}}
}
fn combine_clip(&mut self, rect: Rect, radius: f32, mut border_width: f32) {
let mut clip_rect = qttypes::QRectF {
x: rect.min_x() as _,
y: rect.min_y() as _,
width: rect.width() as _,
height: rect.height() as _,
};
adjust_rect_and_border_for_inner_drawing(&mut clip_rect, &mut border_width);
let painter: &mut QPainter = &mut *self.painter;
cpp! { unsafe [painter as "QPainter*", clip_rect as "QRectF", radius as "float"] {
if (radius <= 0) {
painter->setClipRect(clip_rect, Qt::IntersectClip);
} else {
QPainterPath path;
path.addRoundedRect(clip_rect, radius, radius);
painter->setClipPath(path, Qt::IntersectClip);
}
}}
}
fn get_current_clip(&self) -> Rect {
let painter: &QPainter = self.painter;
let res = cpp! { unsafe [painter as "const QPainter*" ] -> qttypes::QRectF as "QRectF" {
return painter->clipBoundingRect();
}};
Rect::new(Point::new(res.x as _, res.y as _), Size::new(res.width as _, res.height as _))
}
fn save_state(&mut self) {
self.painter.save_state()
}
fn restore_state(&mut self) {
self.painter.restore_state()
}
fn scale_factor(&self) -> f32 {
return 1.;
/* cpp! { unsafe [painter as "QPainter*"] -> f32 as "float" {
return painter->paintEngine()->paintDevice()->devicePixelRatioF();
}} */
}
fn draw_cached_pixmap(
&mut self,
_item_cache: &sixtyfps_corelib::item_rendering::CachedRenderingData,
update_fn: &dyn Fn(&mut dyn FnMut(u32, u32, &[u8])),
) {
update_fn(&mut |width: u32, height: u32, data: &[u8]| {
let data = data.as_ptr();
let painter: &mut QPainter = &mut *self.painter;
cpp! { unsafe [painter as "QPainter*", width as "int", height as "int", data as "const unsigned char *"] {
QImage img(data, width, height, width * 4, QImage::Format_ARGB32_Premultiplied);
painter->drawImage(QPoint(), img);
}}
})
}
fn as_any(&mut self) -> &mut dyn std::any::Any {
self.painter
}
fn translate(&mut self, x: f32, y: f32) {
let painter: &mut QPainter = &mut *self.painter;
cpp! { unsafe [painter as "QPainter*", x as "float", y as "float"] {
painter->translate(x, y);
}}
}
fn rotate(&mut self, angle_in_degrees: f32) {
let painter: &mut QPainter = &mut *self.painter;
cpp! { unsafe [painter as "QPainter*", angle_in_degrees as "float"] {
painter->rotate(angle_in_degrees);
}}
}
fn apply_opacity(&mut self, opacity: f32) {
let painter: &mut QPainter = &mut *self.painter;
cpp! { unsafe [painter as "QPainter*", opacity as "float"] {
painter->setOpacity(painter->opacity() * opacity);
}}
}
}
pub(crate) fn load_image_from_resource(
resource: &ImageInner,
source_size: Option<qttypes::QSize>,
image_fit: ImageFit,
) -> Option<qttypes::QPixmap> {
let (is_path, data) = match resource {
ImageInner::None => return None,
ImageInner::AbsoluteFilePath(path) => (true, qttypes::QByteArray::from(path.as_str())),
ImageInner::EmbeddedData(data) => (false, qttypes::QByteArray::from(data.as_slice())),
ImageInner::EmbeddedRgbaImage { .. } => todo!(),
};
let size_requested = is_svg(resource) && source_size.is_some();
let source_size = source_size.unwrap_or_default();
debug_assert_eq!(ImageFit::contain as i32, 1);
debug_assert_eq!(ImageFit::cover as i32, 2);
Some(cpp! { unsafe [
data as "QByteArray",
is_path as "bool",
size_requested as "bool",
source_size as "QSize",
image_fit as "int"] -> qttypes::QPixmap as "QPixmap" {
if (size_requested) {
QImageReader reader;
QBuffer buffer;
if (is_path) {
reader.setFileName(QString::fromUtf8(data));
} else {
buffer.setBuffer(const_cast<QByteArray *>(&data));
reader.setDevice(&buffer);
}
if (reader.supportsOption(QImageIOHandler::ScaledSize)) {
auto target_size = source_size;
if (image_fit == 1) { //ImageFit::contain
QSizeF s = reader.size();
target_size = (s * qMin(source_size.width() / s.width(), source_size.height() / s.height())).toSize();
} else if (image_fit == 2) { //ImageFit::cover
QSizeF s = reader.size();
target_size = (s * qMax(source_size.width() / s.width(), source_size.height() / s.height())).toSize();
}
reader.setScaledSize(target_size);
return QPixmap::fromImageReader(&reader);
}
}
QPixmap img;
is_path ? img.load(QString::fromUtf8(data)) : img.loadFromData(data);
return img;
}})
}
/// Changes the source or the destination rectangle to respect the image fit
fn adjust_to_image_fit(
image_fit: ImageFit,
source_rect: &mut qttypes::QRectF,
dest_rect: &mut qttypes::QRectF,
) {
match image_fit {
sixtyfps_corelib::items::ImageFit::fill => (),
sixtyfps_corelib::items::ImageFit::cover => {
let ratio = qttypes::qreal::max(
dest_rect.width / source_rect.width,
dest_rect.height / source_rect.height,
);
if source_rect.width > dest_rect.width / ratio {
source_rect.x += (source_rect.width - dest_rect.width / ratio) / 2.;
source_rect.width = dest_rect.width / ratio;
}
if source_rect.height > dest_rect.height / ratio {
source_rect.y += (source_rect.height - dest_rect.height / ratio) / 2.;
source_rect.height = dest_rect.height / ratio;
}
}
sixtyfps_corelib::items::ImageFit::contain => {
let ratio = qttypes::qreal::min(
dest_rect.width / source_rect.width,
dest_rect.height / source_rect.height,
);
if dest_rect.width > source_rect.width * ratio {
dest_rect.x += (dest_rect.width - source_rect.width * ratio) / 2.;
dest_rect.width = source_rect.width * ratio;
}
if dest_rect.height > source_rect.height * ratio {
dest_rect.y += (dest_rect.height - source_rect.height * ratio) / 2.;
dest_rect.height = source_rect.height * ratio;
}
}
};
}
/// Return true if this image is a SVG that is scalable
fn is_svg(resource: &ImageInner) -> bool {
match resource {
ImageInner::None => false,
ImageInner::AbsoluteFilePath(path) => path.as_str().ends_with(".svg"),
ImageInner::EmbeddedData(data) => data.starts_with(b"<svg"),
ImageInner::EmbeddedRgbaImage { .. } => false,
}
}
impl QtItemRenderer<'_> {
fn draw_image_impl(
&mut self,
item_cache: &CachedRenderingData,
source_property: Pin<&Property<Image>>,
dest_rect: qttypes::QRectF,
source_rect: Option<qttypes::QRectF>,
target_width: std::pin::Pin<&Property<f32>>,
target_height: std::pin::Pin<&Property<f32>>,
image_fit: ImageFit,
colorize_property: Option<Pin<&Property<Brush>>>,
) {
// Caller ensured that zero/negative width/height resulted in an early return via get_geometry!.
debug_assert!(target_width.get() > 0.);
debug_assert!(target_height.get() > 0.);
let cached = item_cache.ensure_up_to_date(&mut self.cache.borrow_mut(), || {
// Query target_width/height here again to ensure that changes will invalidate the item rendering cache.
let target_width = target_width.get() as f64;
let target_height = target_height.get() as f64;
let has_source_clipping = source_rect.map_or(false, |rect| {
rect.is_valid()
&& (rect.x != 0.
|| rect.y != 0.
|| rect.width != target_width
|| rect.height != target_height)
});
let source_size = if !has_source_clipping {
Some(qttypes::QSize { width: target_width as u32, height: target_height as u32 })
} else {
// Source size & clipping is not implemented yet
None
};
load_image_from_resource((&source_property.get()).into(), source_size, image_fit)
.map_or(QtRenderingCacheItem::Invalid, |mut pixmap: qttypes::QPixmap| {
let colorize = colorize_property.map_or(Brush::default(), |c| c.get());
if !colorize.is_transparent() {
let brush: QBrush = colorize.into();
cpp!(unsafe [mut pixmap as "QPixmap", brush as "QBrush"] {
QPainter p(&pixmap);
p.setCompositionMode(QPainter::CompositionMode_SourceIn);
p.fillRect(QRect(QPoint(), pixmap.size()), brush);
});
}
QtRenderingCacheItem::Pixmap(pixmap)
})
});
let pixmap: &qttypes::QPixmap = match &cached {
QtRenderingCacheItem::Pixmap(pixmap) => pixmap,
_ => return,
};
let image_size = pixmap.size();
let mut source_rect =
source_rect.filter(|r| r.is_valid()).unwrap_or_else(|| qttypes::QRectF {
x: 0.,
y: 0.,
width: image_size.width as _,
height: image_size.height as _,
});
let mut dest_rect = dest_rect;
adjust_to_image_fit(image_fit, &mut source_rect, &mut dest_rect);
let painter: &mut QPainter = &mut *self.painter;
cpp! { unsafe [painter as "QPainter*", pixmap as "QPixmap*", source_rect as "QRectF", dest_rect as "QRectF"] {
painter->drawPixmap(dest_rect, *pixmap, source_rect);
}};
}
fn draw_rectangle_impl(
painter: &mut QPainter,
mut rect: qttypes::QRectF,
brush: Brush,
border_color: Brush,
mut border_width: f32,
border_radius: f32,
) {
let brush: QBrush = brush.into();
let border_color: QBrush = border_color.into();
adjust_rect_and_border_for_inner_drawing(&mut rect, &mut border_width);
cpp! { unsafe [painter as "QPainter*", brush as "QBrush", border_color as "QBrush", border_width as "float", border_radius as "float", rect as "QRectF"] {
painter->setPen(border_width > 0 ? QPen(border_color, border_width) : Qt::NoPen);
painter->setBrush(brush);
if (border_radius > 0) {
painter->drawRoundedRect(rect, border_radius, border_radius);
} else {
painter->drawRect(rect);
}
}}
}
}
cpp_class!(unsafe struct QWidgetPtr as "std::unique_ptr<QWidget>");
pub struct QtWindow {
widget_ptr: QWidgetPtr,
pub(crate) self_weak: Weak<sixtyfps_corelib::window::Window>,
popup_window: RefCell<Option<(Rc<sixtyfps_corelib::window::Window>, ComponentRc)>>,
cache: QtRenderingCache,
scale_factor: Pin<Box<Property<f32>>>,
}
impl QtWindow {
pub fn new(window_weak: &Weak<sixtyfps_corelib::window::Window>) -> Rc<Self> {
let widget_ptr = cpp! {unsafe [] -> QWidgetPtr as "std::unique_ptr<QWidget>" {
ensure_initialized();
return std::make_unique<SixtyFPSWidget>();
}};
let rc = Rc::new(QtWindow {
widget_ptr,
self_weak: window_weak.clone(),
popup_window: Default::default(),
cache: Default::default(),
scale_factor: Box::pin(Property::new(1.)),
});
let self_weak = Rc::downgrade(&rc);
let widget_ptr = rc.widget_ptr();
let rust_window = Rc::as_ptr(&rc);
cpp! {unsafe [widget_ptr as "SixtyFPSWidget*", rust_window as "void*"] {
widget_ptr->rust_window = rust_window;
}};
ALL_WINDOWS.with(|aw| aw.borrow_mut().push(self_weak));
rc
}
/// Return the QWidget*
fn widget_ptr(&self) -> NonNull<()> {
unsafe { std::mem::transmute_copy::<QWidgetPtr, NonNull<_>>(&self.widget_ptr) }
}
/// ### Candidate to be moved in corelib as this kind of duplicate GraphicsWindow::draw
fn paint_event(&self, painter: &mut QPainter) {
let runtime_window = self.self_weak.upgrade().unwrap();
runtime_window.clone().draw_tracked(|| {
sixtyfps_corelib::animations::update_animations();
let component_rc = self.self_weak.upgrade().unwrap().component();
let component = ComponentRc::borrow_pin(&component_rc);
if runtime_window.meta_properties_tracker.as_ref().is_dirty() {
runtime_window.meta_properties_tracker.as_ref().evaluate(|| {
self.apply_geometry_constraint(
component.as_ref().layout_info(Orientation::Horizontal),
component.as_ref().layout_info(Orientation::Vertical),
);
});
}
let cache = self.cache.clone();
let mut renderer = QtItemRenderer {
painter,
cache,
default_font_properties: self.default_font_properties(),
};
sixtyfps_corelib::item_rendering::render_component_items(
&component_rc,
&mut renderer,
Point::default(),
);
sixtyfps_corelib::animations::CURRENT_ANIMATION_DRIVER.with(|driver| {
if !driver.has_active_animations() {
return;
}
let widget_ptr = self.widget_ptr();
cpp! {unsafe [widget_ptr as "QWidget*"] {
// FIXME: using QTimer -::singleShot is not optimal. We should use Qt animation timer
QTimer::singleShot(16, [widget_ptr = QPointer<QWidget>(widget_ptr)] {
if (widget_ptr)
widget_ptr->update();
});
//return widget_ptr->update();
}}
});
});
}
fn resize_event(&self, size: qttypes::QSize) {
let component_rc = self.self_weak.upgrade().unwrap().component();
let component = ComponentRc::borrow_pin(&component_rc);
let root_item = component.as_ref().get_item_ref(0);
if let Some(window_item) = ItemRef::downcast_pin::<items::Window>(root_item) {
window_item.width.set(size.width as _);
window_item.height.set(size.height as _);
}
}
fn mouse_event(&self, event: MouseEvent) {
self.self_weak.upgrade().unwrap().process_mouse_input(event);
timer_event();
}
fn key_event(&self, key: i32, text: qttypes::QString, modif: u32, released: bool) {
sixtyfps_corelib::animations::update_animations();
let text: String = text.into();
let modifiers = sixtyfps_corelib::input::KeyboardModifiers {
control: (modif & key_generated::Qt_KeyboardModifier_ControlModifier) != 0,
alt: (modif & key_generated::Qt_KeyboardModifier_AltModifier) != 0,
shift: (modif & key_generated::Qt_KeyboardModifier_ShiftModifier) != 0,
meta: (modif & key_generated::Qt_KeyboardModifier_MetaModifier) != 0,
};
let text = qt_key_to_string(key as key_generated::Qt_Key, text);
let event = KeyEvent {
event_type: if released { KeyEventType::KeyReleased } else { KeyEventType::KeyPressed },
text,
modifiers,
};
self.self_weak.upgrade().unwrap().process_key_input(&event);
timer_event();
}
/// Set the min/max sizes on the QWidget
fn apply_geometry_constraint(
&self,
constraints_h: sixtyfps_corelib::layout::LayoutInfo,
constraints_v: sixtyfps_corelib::layout::LayoutInfo,
) {
let widget_ptr = self.widget_ptr();
let min_width: f32 = constraints_h.min.min(constraints_h.max);
let min_height: f32 = constraints_v.min.min(constraints_v.max);
let mut max_width: f32 = constraints_h.max.max(constraints_h.min);
let mut max_height: f32 = constraints_v.max.max(constraints_v.min);
cpp! {unsafe [widget_ptr as "QWidget*", min_width as "float", min_height as "float", mut max_width as "float", mut max_height as "float"] {
widget_ptr->setMinimumSize(QSize(min_width, min_height));
if (max_width > QWIDGETSIZE_MAX)
max_width = QWIDGETSIZE_MAX;
if (max_height > QWIDGETSIZE_MAX)
max_height = QWIDGETSIZE_MAX;
widget_ptr->setMaximumSize(QSize(max_width, max_height).expandedTo({1,1}));
}};
}
fn default_font_properties(&self) -> FontRequest {
self.self_weak
.upgrade()
.unwrap()
.try_component()
.and_then(|component_rc| {
let component = ComponentRc::borrow_pin(&component_rc);
let root_item = component.as_ref().get_item_ref(0);
ItemRef::downcast_pin(root_item)
.map(|window_item: Pin<&items::Window>| window_item.default_font_properties())
})
.unwrap_or_default()
}
}
#[allow(unused)]
impl PlatformWindow for QtWindow {
fn show(self: Rc<Self>) {
let component_rc = self.self_weak.upgrade().unwrap().component();
let component = ComponentRc::borrow_pin(&component_rc);
let root_item = component.as_ref().get_item_ref(0);
if let Some(window_item) = ItemRef::downcast_pin(root_item) {
self.apply_window_properties(window_item);
}
let widget_ptr = self.widget_ptr();
cpp! {unsafe [widget_ptr as "QWidget*"] {
widget_ptr->show();
}};
}
fn hide(self: Rc<Self>) {
let widget_ptr = self.widget_ptr();
cpp! {unsafe [widget_ptr as "QWidget*"] {
widget_ptr->hide();
}};
}
fn request_redraw(&self) {
let widget_ptr = self.widget_ptr();
cpp! {unsafe [widget_ptr as "QWidget*"] {
return widget_ptr->update();
}}
}
fn request_window_properties_update(&self) {
let widget_ptr = self.widget_ptr();
cpp! {unsafe [widget_ptr as "SixtyFPSWidget*"] {
QCoreApplication::postEvent(widget_ptr, new QEvent(QEvent::User));
}};
}
/// Apply windows property such as title to the QWidget*
fn apply_window_properties(&self, window_item: Pin<&items::Window>) {
let widget_ptr = self.widget_ptr();
let title: qttypes::QString = window_item.title().as_str().into();
let mut size = qttypes::QSize {
width: window_item.width().ceil() as _,
height: window_item.height().ceil() as _,
};
if size.width == 0 || size.height == 0 {
let existing_size = cpp!(unsafe [widget_ptr as "QWidget*"] -> qttypes::QSize as "QSize" {
auto sizeHint = widget_ptr->sizeHint();
return sizeHint.isValid() ? sizeHint : widget_ptr->size();
});
if size.width == 0 {
window_item.width.set(existing_size.width as _);
size.width = existing_size.width;
}
if size.height == 0 {
window_item.height.set(existing_size.height as _);
size.height = existing_size.height;
}
}
let background: u32 = window_item.background().as_argb_encoded();
cpp! {unsafe [widget_ptr as "QWidget*", title as "QString", size as "QSize", background as "QRgb"] {
if (size != widget_ptr->size()) {
widget_ptr->resize(size.expandedTo({1, 1}));
}
widget_ptr->setWindowTitle(title);
auto pal = widget_ptr->palette();
pal.setColor(QPalette::Window, QColor::fromRgba(background));
widget_ptr->setPalette(pal);
}};
}
fn scale_factor(&self) -> f32 {
self.scale_factor.as_ref().get()
/* let widget_ptr = self.widget_ptr();
cpp! {unsafe [widget_ptr as "QWidget*"] -> f32 as "float" {
return widget_ptr->windowHandle()->devicePixelRatio();
}} */
}
/// Only used for testing
fn set_scale_factor(&self, factor: f32) {
self.scale_factor.as_ref().set(factor)
}
fn free_graphics_resources<'a>(self: Rc<Self>, items: &Slice<'a, Pin<items::ItemRef<'a>>>) {
for item in items.iter() {
let cached_rendering_data = item.cached_rendering_data_offset();
cached_rendering_data.release(&mut self.cache.borrow_mut());
}
}
fn show_popup(&self, popup: &sixtyfps_corelib::component::ComponentRc, position: Point) {
let component = ComponentRc::borrow_pin(popup);
let root_item = component.as_ref().get_item_ref(0);
let (mut w, mut h) =
if let Some(window_item) = ItemRef::downcast_pin::<items::Window>(root_item) {
(window_item.width(), window_item.height())
} else {
(0., 0.)
};
let info_h = component.as_ref().layout_info(Orientation::Horizontal);
let info_v = component.as_ref().layout_info(Orientation::Vertical);
if w <= 0. {
w = info_h.preferred;
}
if h <= 0. {
h = info_v.preferred;
}
w = w.clamp(info_h.min, info_h.max);
h = h.clamp(info_v.min, info_v.max);
let size = qttypes::QSize { width: w as _, height: h as _ };
let window = sixtyfps_corelib::window::Window::new(|window| QtWindow::new(window));
let popup_window: &QtWindow =
<dyn std::any::Any>::downcast_ref(window.as_ref().as_any()).unwrap();
window.set_component(popup);
let popup_ptr = popup_window.widget_ptr();
let pos = qttypes::QPoint { x: position.x as _, y: position.y as _ };
let widget_ptr = self.widget_ptr();
cpp! {unsafe [widget_ptr as "QWidget*", popup_ptr as "QWidget*", pos as "QPoint", size as "QSize"] {
popup_ptr->setParent(widget_ptr, Qt::Popup);
popup_ptr->setGeometry(QRect(pos + widget_ptr->geometry().topLeft(), size));
popup_ptr->show();
}};
self.popup_window.replace(Some((window, popup.clone())));
}
fn close_popup(&self) {
self.popup_window.replace(None);
}
fn font_metrics(
&self,
_item_graphics_cache: &sixtyfps_corelib::item_rendering::CachedRenderingData,
unresolved_font_request_getter: &dyn Fn() -> sixtyfps_corelib::graphics::FontRequest,
_reference_text: Pin<&Property<SharedString>>,
) -> Box<dyn sixtyfps_corelib::graphics::FontMetrics> {
Box::new(get_font(unresolved_font_request_getter().merge(&self.default_font_properties())))
}
fn as_any(&self) -> &dyn std::any::Any {
self
}
}
fn get_font(request: FontRequest) -> QFont {
let family: qttypes::QString = request.family.unwrap_or_default().as_str().into();
let pixel_size: f32 = request.pixel_size.unwrap_or(0.);
let weight: i32 = request.weight.unwrap_or(0);
let letter_spacing: f32 = request.letter_spacing.unwrap_or_default();
cpp!(unsafe [family as "QString", pixel_size as "float", weight as "int", letter_spacing as "float"] -> QFont as "QFont" {
QFont f;
if (!family.isEmpty())
f.setFamily(family);
if (pixel_size > 0)
f.setPixelSize(pixel_size);
if (weight > 0) {
#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
f.setWeight(qMin((weight-100)/8, 99));
#else
f.setWeight(QFont::Weight(weight));
#endif
}
f.setLetterSpacing(QFont::AbsoluteSpacing, letter_spacing);
// Mark all font properties as resolved, to avoid inheriting font properties
// from the widget hierarchy. Later we call QPainter::setFont, which would
// merge in unset properties (such as bold, etc.) that it retrieved from
// the widget the painter is associated with.
f.resolve(QFont::AllPropertiesResolved);
return f;
})
}
cpp_class! {pub unsafe struct QFont as "QFont"}
impl sixtyfps_corelib::graphics::FontMetrics for QFont {
fn text_size(&self, text: &str, max_width: Option<f32>) -> sixtyfps_corelib::graphics::Size {
let string = qttypes::QString::from(text);
let mut r = qttypes::QRectF::default();
if let Some(max) = max_width {
r.height = f32::MAX as _;
r.width = max as _;
}
let size = cpp! { unsafe [self as "const QFont*", string as "QString", r as "QRectF"]
-> qttypes::QSizeF as "QSizeF"{
return QFontMetricsF(*self).boundingRect(r, r.isEmpty() ? 0 : Qt::TextWordWrap , string).size();
}};
sixtyfps_corelib::graphics::Size::new(size.width as _, size.height as _)
}
fn line_height(&self) -> f32 {
cpp! { unsafe [self as "const QFont*"]
-> f32 as "float"{
return QFontMetricsF(*self).height();
}}
}
fn text_offset_for_x_position<'a>(&self, text: &'a str, x: f32) -> usize {
let string = qttypes::QString::from(text);
cpp! { unsafe [self as "const QFont*", string as "QString", x as "float"] -> usize as "long long" {
QTextLayout layout(string, *self);
layout.beginLayout();
layout.createLine();
layout.endLayout();
if (layout.lineCount() == 0)
return 0;
auto cur = layout.lineAt(0).xToCursor(x);
// convert to an utf8 pos;
return QStringView(string).left(cur).toUtf8().size();
}}
}
}
thread_local! {
// FIXME: currently the window are never removed
static ALL_WINDOWS: RefCell<Vec<Weak<QtWindow>>> = Default::default();
}
/// Called by C++'s TimerHandler::timerEvent, or everytime a timer might have been started
pub(crate) fn timer_event() {
sixtyfps_corelib::animations::update_animations();
sixtyfps_corelib::timers::TimerList::maybe_activate_timers();
sixtyfps_corelib::animations::CURRENT_ANIMATION_DRIVER.with(|driver| {
if !driver.has_active_animations() {
return;
}
ALL_WINDOWS.with(|windows| {
for x in windows.borrow().iter() {
if let Some(x) = x.upgrade() {
x.request_redraw();
}
}
});
});
let mut timeout = sixtyfps_corelib::timers::TimerList::next_timeout().map(|instant| {
let now = std::time::Instant::now();
if instant > now {
instant.duration_since(now).as_millis() as i32
} else {
0
}
});
if sixtyfps_corelib::animations::CURRENT_ANIMATION_DRIVER
.with(|driver| driver.has_active_animations())
{
timeout = timeout.map(|x| x.max(16)).or(Some(16));
};
if let Some(timeout) = timeout {
cpp! { unsafe [timeout as "int"] {
ensure_initialized();
TimerHandler::instance().timer.start(timeout, &TimerHandler::instance());
}}
}
}
fn qt_key_to_string(key: key_generated::Qt_Key, event_text: String) -> SharedString {
// First try to see if we received one of the non-ascii keys that we have
// a special representation for. If that fails, try to use the provided
// text. If that's empty, then try to see if the provided key has an ascii
// representation. The last step is needed because modifiers may result in
// the text to be empty otherwise, for example Ctrl+C.
if let Some(special_key_code) = match key as key_generated::Qt_Key {
key_generated::Qt_Key_Key_Left => Some(InternalKeyCode::Left),
key_generated::Qt_Key_Key_Right => Some(InternalKeyCode::Right),
key_generated::Qt_Key_Key_Backspace => Some(InternalKeyCode::Back),
key_generated::Qt_Key_Key_Delete => Some(InternalKeyCode::Delete),
key_generated::Qt_Key_Key_End => Some(InternalKeyCode::End),
key_generated::Qt_Key_Key_Home => Some(InternalKeyCode::Home),
key_generated::Qt_Key_Key_Return => Some(InternalKeyCode::Return),
_ => None,
} {
return special_key_code.encode_to_string();
};
if !event_text.is_empty() {
return event_text.into();
}
match key {
key_generated::Qt_Key_Key_Space => " ",
key_generated::Qt_Key_Key_Exclam => "!",
key_generated::Qt_Key_Key_QuoteDbl => "\"",
key_generated::Qt_Key_Key_NumberSign => "#",
key_generated::Qt_Key_Key_Dollar => "$",
key_generated::Qt_Key_Key_Percent => "%",
key_generated::Qt_Key_Key_Ampersand => "&",
key_generated::Qt_Key_Key_Apostrophe => "'",
key_generated::Qt_Key_Key_ParenLeft => "(",
key_generated::Qt_Key_Key_ParenRight => ")",
key_generated::Qt_Key_Key_Asterisk => "*",
key_generated::Qt_Key_Key_Plus => "+",
key_generated::Qt_Key_Key_Comma => ",",
key_generated::Qt_Key_Key_Minus => "-",
key_generated::Qt_Key_Key_Period => ".",
key_generated::Qt_Key_Key_Slash => "/",
key_generated::Qt_Key_Key_0 => "0",
key_generated::Qt_Key_Key_1 => "1",
key_generated::Qt_Key_Key_2 => "2",
key_generated::Qt_Key_Key_3 => "3",
key_generated::Qt_Key_Key_4 => "4",
key_generated::Qt_Key_Key_5 => "5",
key_generated::Qt_Key_Key_6 => "6",
key_generated::Qt_Key_Key_7 => "7",
key_generated::Qt_Key_Key_8 => "8",
key_generated::Qt_Key_Key_9 => "9",
key_generated::Qt_Key_Key_Colon => ":",
key_generated::Qt_Key_Key_Semicolon => ";",
key_generated::Qt_Key_Key_Less => "<",
key_generated::Qt_Key_Key_Equal => "=",
key_generated::Qt_Key_Key_Greater => ">",
key_generated::Qt_Key_Key_Question => "?",
key_generated::Qt_Key_Key_At => "@",
key_generated::Qt_Key_Key_A => "a",
key_generated::Qt_Key_Key_B => "b",
key_generated::Qt_Key_Key_C => "c",
key_generated::Qt_Key_Key_D => "d",
key_generated::Qt_Key_Key_E => "e",
key_generated::Qt_Key_Key_F => "f",
key_generated::Qt_Key_Key_G => "g",
key_generated::Qt_Key_Key_H => "h",
key_generated::Qt_Key_Key_I => "i",
key_generated::Qt_Key_Key_J => "j",
key_generated::Qt_Key_Key_K => "k",
key_generated::Qt_Key_Key_L => "l",
key_generated::Qt_Key_Key_M => "m",
key_generated::Qt_Key_Key_N => "n",
key_generated::Qt_Key_Key_O => "o",
key_generated::Qt_Key_Key_P => "p",
key_generated::Qt_Key_Key_Q => "q",
key_generated::Qt_Key_Key_R => "r",
key_generated::Qt_Key_Key_S => "s",
key_generated::Qt_Key_Key_T => "t",
key_generated::Qt_Key_Key_U => "u",
key_generated::Qt_Key_Key_V => "v",
key_generated::Qt_Key_Key_W => "w",
key_generated::Qt_Key_Key_X => "x",
key_generated::Qt_Key_Key_Y => "y",
key_generated::Qt_Key_Key_Z => "z",
key_generated::Qt_Key_Key_BracketLeft => "[",
key_generated::Qt_Key_Key_Backslash => "\\",
key_generated::Qt_Key_Key_BracketRight => "]",
key_generated::Qt_Key_Key_AsciiCircum => "^",
key_generated::Qt_Key_Key_Underscore => "_",
key_generated::Qt_Key_Key_QuoteLeft => "`",
key_generated::Qt_Key_Key_BraceLeft => "{",
key_generated::Qt_Key_Key_Bar => "|",
key_generated::Qt_Key_Key_BraceRight => "}",
key_generated::Qt_Key_Key_AsciiTilde => "~",
_ => "",
}
.into()
}
pub(crate) mod ffi {
use std::ffi::c_void;
use super::QtWindow;
#[no_mangle]
pub extern "C" fn sixtyfps_qt_get_widget(
window: &sixtyfps_corelib::window::ComponentWindow,
) -> *mut c_void {
<dyn std::any::Any>::downcast_ref(window.0.as_any())
.map_or(std::ptr::null_mut(), |win: &QtWindow| {
win.widget_ptr().cast::<c_void>().as_ptr()
})
}
}
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