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Added scrolled callback to ListView and ScrollView (#5964)
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9 changed files with 88 additions and 66 deletions
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@ -12,6 +12,7 @@ All notable changes to this project are documented in this file.
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### Widgets
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- Fixed `TextEdit` not invoking `edited` callbacks (#5848).
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- Added `scrolled` callback to `ListView` and `ScrollView`.
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- Do not trigger `current-item-changed` on `StandardListView` if `current-item` is set on the same value.
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- Fixed `TimePickerPopup` does not open minute view by click on selected hour.
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@ -9,6 +9,11 @@ Elements are only instantiated if they are visible
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Same as [`ScrollView`](#scrollview)
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### Callbacks
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Same as [`ScrollView`](#scrollview)
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### Example
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```slint
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@ -18,6 +18,10 @@ using for loops may be added in the future and is tracked in issue #407.
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- **`viewport-x`** and **`viewport-y`** (_in-out_ _length_): The `x` and `y` properties of the viewport. Usually these are negative
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- **`visible-width`** and **`visible-height`** (_out_ _length_): The size of the visible area of the ScrollView (not including the scrollbar)
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### Callbacks
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- **`scrolled()`**: Invoked when `viewport-x` or `viewport-y` is changed by a user action (dragging, scrolling).
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### Example
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```slint
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@ -87,6 +87,8 @@ export component ScrollView {
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// FIXME: remove. This property is currently set by the ListView and is used by the native style to draw the scrollbar differently when it has focus
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in-out property <bool> has-focus;
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callback scrolled <=> flickable.flicked;
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min-height: 50px;
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min-width: 50px;
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horizontal-stretch: 1;
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@ -5,7 +5,7 @@ import { CupertinoPalette, Icons } from "styling.slint";
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export component ScrollBar inherits Rectangle {
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in property <bool> enabled;
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out property <bool> has-hover: i-touch-area.has-hover;
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out property <bool> has-hover: touch-area.has-hover;
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in-out property <bool> horizontal;
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in-out property <length> maximum;
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in-out property <length> page-size;
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@ -19,16 +19,16 @@ export component ScrollBar inherits Rectangle {
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background: transparent;
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states [
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hover when i-touch-area.has-hover : {
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hover when touch-area.has-hover : {
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background: CupertinoPalette.foreground.with-alpha(0.2);
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i-border.background: CupertinoPalette.foreground.with-alpha(0.2);
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border.background: CupertinoPalette.foreground.with-alpha(0.2);
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pad: 4px;
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}
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]
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animate width, height, pad, background { duration: 150ms; easing: ease-out; }
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i-border := Rectangle {
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border := Rectangle {
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x: 0;
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y: 0;
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width: !root.horizontal ? 0.8px : parent.width;
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@ -36,11 +36,11 @@ export component ScrollBar inherits Rectangle {
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background: transparent;
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}
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i-thumb := Rectangle {
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thumb := Rectangle {
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width: !root.horizontal ? parent.width - 2 * root.pad : root.maximum <= 0phx ? 0phx : max(32px, root.track-size * root.page-size / (root.maximum + root.page-size));
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height: root.horizontal ? parent.height - 2 * root.pad : root.maximum <= 0phx ? 0phx : max(32px, root.track-size * (root.page-size / (root.maximum + root.page-size)));
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x: !root.horizontal ? (parent.width - self.width) / 2 : root.offset + (root.track-size - i-thumb.width) * (-root.value / root.maximum);
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y: root.horizontal ? (parent.height - self.height) / 2 : root.offset + (root.track-size - i-thumb.height) * (-root.value / root.maximum);
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x: !root.horizontal ? (parent.width - self.width) / 2 : root.offset + (root.track-size - thumb.width) * (-root.value / root.maximum);
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y: root.horizontal ? (parent.height - self.height) / 2 : root.offset + (root.track-size - thumb.height) * (-root.value / root.maximum);
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border-radius: (root.horizontal ? self.height : self.width) / 2;
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background: CupertinoPalette.foreground;
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opacity: 0.6;
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@ -50,7 +50,7 @@ export component ScrollBar inherits Rectangle {
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animate width, height { duration: 100ms; easing: ease-out; }
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}
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i-touch-area := TouchArea {
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touch-area := TouchArea {
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property <length> pressed-value;
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width: parent.width;
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@ -65,8 +65,8 @@ export component ScrollBar inherits Rectangle {
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moved => {
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if (self.enabled && self.pressed) {
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root.value = -max(0px, min(root.maximum, self.pressed-value + (
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root.horizontal ? (i-touch-area.mouse-x - i-touch-area.pressed-x) * (root.maximum / (root.track-size - i-thumb.width))
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: (i-touch-area.mouse-y - i-touch-area.pressed-y) * (root.maximum / (root.track-size - i-thumb.height))
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root.horizontal ? (touch-area.mouse-x - touch-area.pressed-x) * (root.maximum / (root.track-size - thumb.width))
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: (touch-area.mouse-y - touch-area.pressed-y) * (root.maximum / (root.track-size - thumb.height))
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)));
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}
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}
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@ -86,15 +86,17 @@ export component ScrollBar inherits Rectangle {
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export component ScrollView {
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in property <bool> enabled: true;
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out property <length> visible-width <=> i-flickable.width;
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out property <length> visible-height <=> i-flickable.height;
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in-out property <length> viewport-width <=> i-flickable.viewport-width;
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in-out property <length> viewport-height <=> i-flickable.viewport-height;
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in-out property <length> viewport-x <=> i-flickable.viewport-x;
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in-out property <length> viewport-y <=> i-flickable.viewport-y;
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out property <length> visible-width <=> flickable.width;
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out property <length> visible-height <=> flickable.height;
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in-out property <length> viewport-width <=> flickable.viewport-width;
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in-out property <length> viewport-height <=> flickable.viewport-height;
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in-out property <length> viewport-x <=> flickable.viewport-x;
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in-out property <length> viewport-y <=> flickable.viewport-y;
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// FIXME: remove. This property is currently set by the ListView and is used by the native style to draw the scrollbar differently when it has focus
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in-out property <bool> has-focus;
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callback scrolled <=> flickable.flicked;
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min-height: 50px;
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min-width: 50px;
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horizontal-stretch: 1;
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@ -102,39 +104,39 @@ export component ScrollView {
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preferred-height: 100%;
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preferred-width: 100%;
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i-flickable := Flickable {
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flickable := Flickable {
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x: 2px;
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y: 2px;
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interactive: false;
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viewport-y <=> i-vertical-bar.value;
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viewport-x <=> i-horizontal-bar.value;
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viewport-y <=> vertical-bar.value;
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viewport-x <=> horizontal-bar.value;
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width: 100%;
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height: 100%;
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@children
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}
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i-vertical-bar := ScrollBar {
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vertical-bar := ScrollBar {
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enabled: root.enabled;
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x: parent.width - self.width;
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y: 0;
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width: self.has-hover ? 20px : 12px;
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height: i-horizontal-bar.visible ? parent.height - i-horizontal-bar.height : parent.height;
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height: horizontal-bar.visible ? parent.height - horizontal-bar.height : parent.height;
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horizontal: false;
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maximum: i-flickable.viewport-height - i-flickable.height;
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page-size: i-flickable.height;
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visible: i-flickable.viewport-height > i-flickable.height;
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maximum: flickable.viewport-height - flickable.height;
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page-size: flickable.height;
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visible: flickable.viewport-height > flickable.height;
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}
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i-horizontal-bar := ScrollBar {
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horizontal-bar := ScrollBar {
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enabled: root.enabled;
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width: i-vertical-bar.visible ? parent.width - i-vertical-bar.width : parent.width;
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width: vertical-bar.visible ? parent.width - vertical-bar.width : parent.width;
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height: self.has-hover ? 20px : 12px;
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y: parent.height - self.height;
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x: 0;
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horizontal: true;
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maximum: i-flickable.viewport-width - i-flickable.width;
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page-size: i-flickable.width;
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visible: i-flickable.viewport-width > i-flickable.width;
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maximum: flickable.viewport-width - flickable.width;
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page-size: flickable.width;
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visible: flickable.viewport-width > flickable.width;
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}
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}
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@ -9,7 +9,7 @@ component ScrollViewButton inherits TouchArea {
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width: 8px;
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height: 8px;
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i-icon := Image {
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icon := Image {
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x: (parent.width - self.width) / 2;
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y: (parent.height - self.height) / 2;
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width: parent.width;
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states [
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pressed when root.pressed : {
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opacity: 1;
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i-icon.width: 6px;
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icon.width: 6px;
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}
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hover when root.has-hover : {
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opacity: 1;
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i-icon.colorize: FluentPalette.text-secondary;
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icon.colorize: FluentPalette.text-secondary;
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}
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]
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}
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@ -48,28 +48,28 @@ component ScrollBar inherits Rectangle {
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border-radius: 7px;
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states [
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hover when i-touch-area.has-hover || i-down-scroll-button.has-hover || i-up-scroll-button.has-hover : {
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hover when touch-area.has-hover || down-scroll-button.has-hover || up-scroll-button.has-hover : {
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root.background: FluentPalette.alternate-background;
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root.size: 6px;
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i-up-scroll-button.opacity: 1;
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i-down-scroll-button.opacity: 1;
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up-scroll-button.opacity: 1;
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down-scroll-button.opacity: 1;
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}
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]
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animate size { duration: 150ms; easing: ease-out; }
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i-thumb := Rectangle {
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thumb := Rectangle {
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width: !root.horizontal ? root.size : root.maximum <= 0phx ? 0phx : max(16px, root.track-size * root.page-size / (root.maximum + root.page-size));
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height: root.horizontal ? root.size : root.maximum <= 0phx ? 0phx : max(16px, root.track-size * (root.page-size / (root.maximum + root.page-size)));
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x: !root.horizontal ? parent.width - 4px - self.width : root.offset + (root.track-size - i-thumb.width) * (-root.value / root.maximum);
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y: root.horizontal ? parent.height - 4px - self.height : root.offset + (root.track-size - i-thumb.height) * (-root.value / root.maximum);
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x: !root.horizontal ? parent.width - 4px - self.width : root.offset + (root.track-size - thumb.width) * (-root.value / root.maximum);
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y: root.horizontal ? parent.height - 4px - self.height : root.offset + (root.track-size - thumb.height) * (-root.value / root.maximum);
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border-radius: (root.horizontal ? self.height : self.width) / 2;
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background: FluentPalette.border;
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animate width, height { duration: 150ms; easing: ease-out; }
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}
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i-touch-area := TouchArea {
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touch-area := TouchArea {
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property <length> pressed-value;
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width: parent.width;
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moved => {
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if (self.enabled && self.pressed) {
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root.value = -max(0px, min(root.maximum, self.pressed-value + (
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root.horizontal ? (i-touch-area.mouse-x - i-touch-area.pressed-x) * (root.maximum / (root.track-size - i-thumb.width))
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: (i-touch-area.mouse-y - i-touch-area.pressed-y) * (root.maximum / (root.track-size - i-thumb.height))
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root.horizontal ? (touch-area.mouse-x - touch-area.pressed-x) * (root.maximum / (root.track-size - thumb.width))
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: (touch-area.mouse-y - touch-area.pressed-y) * (root.maximum / (root.track-size - thumb.height))
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)));
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}
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}
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@ -102,7 +102,7 @@ component ScrollBar inherits Rectangle {
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}
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}
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i-up-scroll-button := ScrollViewButton {
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up-scroll-button := ScrollViewButton {
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opacity: 0;
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x: !root.horizontal ? (parent.width - self.width) / 2 : 4px;
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y: root.horizontal ? (parent.height - self.height) / 2 : 4px;
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@ -113,7 +113,7 @@ component ScrollBar inherits Rectangle {
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}
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}
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i-down-scroll-button := ScrollViewButton {
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down-scroll-button := ScrollViewButton {
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opacity: 0;
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x: !root.horizontal ? (parent.width - self.width) / 2 : root.width - self.width - 4px;
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y: root.horizontal ? (parent.height - self.height) / 2 : root.height - self.height - 4px;
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@ -127,15 +127,17 @@ component ScrollBar inherits Rectangle {
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export component ScrollView {
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in property <bool> enabled: true;
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out property <length> visible-width <=> i-flickable.width;
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out property <length> visible-height <=> i-flickable.height;
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in-out property <length> viewport-width <=> i-flickable.viewport-width;
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in-out property <length> viewport-height <=> i-flickable.viewport-height;
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in-out property <length> viewport-x <=> i-flickable.viewport-x;
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in-out property <length> viewport-y <=> i-flickable.viewport-y;
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out property <length> visible-width <=> flickable.width;
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out property <length> visible-height <=> flickable.height;
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in-out property <length> viewport-width <=> flickable.viewport-width;
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in-out property <length> viewport-height <=> flickable.viewport-height;
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in-out property <length> viewport-x <=> flickable.viewport-x;
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in-out property <length> viewport-y <=> flickable.viewport-y;
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// FIXME: remove. This property is currently set by the ListView and is used by the native style to draw the scrollbar differently when it has focus
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in-out property <bool> has-focus;
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callback scrolled <=> flickable.flicked;
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min-height: 50px;
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min-width: 50px;
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horizontal-stretch: 1;
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preferred-height: 100%;
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preferred-width: 100%;
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i-flickable := Flickable {
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flickable := Flickable {
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interactive: false;
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viewport-y <=> i-vertical-bar.value;
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viewport-x <=> i-horizontal-bar.value;
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viewport-y <=> vertical-bar.value;
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viewport-x <=> horizontal-bar.value;
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width: parent.width;
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height: parent.height;
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@children
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}
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i-vertical-bar := ScrollBar {
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vertical-bar := ScrollBar {
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enabled: root.enabled;
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width: 14px;
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x: i-flickable.width + i-flickable.x - self.width;
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y: i-flickable.y;
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height: i-flickable.height;
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x: flickable.width + flickable.x - self.width;
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y: flickable.y;
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height: flickable.height;
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horizontal: false;
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maximum: i-flickable.viewport-height - i-flickable.height;
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page-size: i-flickable.height;
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visible: i-flickable.viewport-height > i-flickable.height;
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maximum: flickable.viewport-height - flickable.height;
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page-size: flickable.height;
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visible: flickable.viewport-height > flickable.height;
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}
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i-horizontal-bar := ScrollBar {
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horizontal-bar := ScrollBar {
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enabled: root.enabled;
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width: i-flickable.width;
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width: flickable.width;
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height: 14px;
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y: i-flickable.height + i-flickable.y - self.height;
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x: i-flickable.x;
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y: flickable.height + flickable.y - self.height;
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x: flickable.x;
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horizontal: true;
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maximum: i-flickable.viewport-width - i-flickable.width;
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page-size: i-flickable.width;
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visible: i-flickable.viewport-width > i-flickable.width;
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maximum: flickable.viewport-width - flickable.width;
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page-size: flickable.width;
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visible: flickable.viewport-width > flickable.width;
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}
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}
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@ -96,6 +96,8 @@ export component ScrollView {
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in-out property <length> viewport-x <=> flickable.viewport-x;
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in-out property <length> viewport-y <=> flickable.viewport-y;
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callback scrolled <=> flickable.flicked;
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min-height: 50px;
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min-width: 50px;
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horizontal-stretch: 1;
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@ -23,6 +23,8 @@ export component InternalScrollView {
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out property <length> native-padding-bottom: native.native-padding-bottom;
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in property <length> header-height: 0;
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callback scrolled <=> fli.flicked;
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preferred-height: 100%;
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preferred-width: 100%;
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min-height: native.min-height;
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@ -13,6 +13,8 @@ export component ScrollView {
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in-out property <length> viewport-x <=> internal.viewport-x;
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in-out property <length> viewport-y <=> internal.viewport-y;
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callback scrolled <=> internal.scrolled;
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min-height: internal.min-height;
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min-width: internal.min-width;
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horizontal-stretch: 1;
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