gnome-shell/js/ui/screenshot.js
Ivan Molodetskikh d10e626de9 screenshot-ui: Add window selection
UIWindowSelectorLayout is a stripped-down subclass of WorkspaceLayout
(we don't have to deal with windows disappearing or appearing or
changing size). UIWindowSelectorWindow is a heavily stripped-down
version of WindowPreview. UIWindowSelector is analogous to the Workspace
class.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1954>
2022-01-27 22:25:42 +00:00

2075 lines
71 KiB
JavaScript

// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
/* exported ScreenshotService, ScreenshotUI, showScreenshotUI */
const { Clutter, Gio, GObject, GLib, Meta, Shell, St } = imports.gi;
const GrabHelper = imports.ui.grabHelper;
const Layout = imports.ui.layout;
const Lightbox = imports.ui.lightbox;
const Main = imports.ui.main;
const Workspace = imports.ui.workspace;
Gio._promisify(Shell.Screenshot.prototype, 'pick_color', 'pick_color_finish');
Gio._promisify(Shell.Screenshot.prototype, 'screenshot', 'screenshot_finish');
Gio._promisify(Shell.Screenshot.prototype,
'screenshot_window', 'screenshot_window_finish');
Gio._promisify(Shell.Screenshot.prototype,
'screenshot_area', 'screenshot_area_finish');
Gio._promisify(Shell.Screenshot.prototype,
'screenshot_stage_to_content', 'screenshot_stage_to_content_finish');
Gio._promisify(
Shell.Screenshot,
'composite_to_stream', 'composite_to_stream_finish');
const { loadInterfaceXML } = imports.misc.fileUtils;
const { DBusSenderChecker } = imports.misc.util;
const ScreenshotIface = loadInterfaceXML('org.gnome.Shell.Screenshot');
var IconLabelButton = GObject.registerClass(
class IconLabelButton extends St.Button {
_init(iconName, label, params) {
super._init(params);
this._container = new St.BoxLayout({
vertical: true,
style_class: 'icon-label-button-container',
});
this.set_child(this._container);
this._container.add_child(new St.Icon({ icon_name: iconName }));
this._container.add_child(new St.Label({
text: label,
x_align: Clutter.ActorAlign.CENTER,
}));
}
});
var UIAreaIndicator = GObject.registerClass(
class UIAreaIndicator extends St.Widget {
_init(params) {
super._init(params);
this._topRect = new St.Widget({ style_class: 'screenshot-ui-area-indicator-shade' });
this._topRect.add_constraint(new Clutter.BindConstraint({
source: this,
coordinate: Clutter.BindCoordinate.WIDTH,
}));
this._topRect.add_constraint(new Clutter.SnapConstraint({
source: this,
from_edge: Clutter.SnapEdge.TOP,
to_edge: Clutter.SnapEdge.TOP,
}));
this._topRect.add_constraint(new Clutter.SnapConstraint({
source: this,
from_edge: Clutter.SnapEdge.LEFT,
to_edge: Clutter.SnapEdge.LEFT,
}));
this.add_child(this._topRect);
this._bottomRect = new St.Widget({ style_class: 'screenshot-ui-area-indicator-shade' });
this._bottomRect.add_constraint(new Clutter.BindConstraint({
source: this,
coordinate: Clutter.BindCoordinate.WIDTH,
}));
this._bottomRect.add_constraint(new Clutter.SnapConstraint({
source: this,
from_edge: Clutter.SnapEdge.BOTTOM,
to_edge: Clutter.SnapEdge.BOTTOM,
}));
this._bottomRect.add_constraint(new Clutter.SnapConstraint({
source: this,
from_edge: Clutter.SnapEdge.LEFT,
to_edge: Clutter.SnapEdge.LEFT,
}));
this.add_child(this._bottomRect);
this._leftRect = new St.Widget({ style_class: 'screenshot-ui-area-indicator-shade' });
this._leftRect.add_constraint(new Clutter.SnapConstraint({
source: this,
from_edge: Clutter.SnapEdge.LEFT,
to_edge: Clutter.SnapEdge.LEFT,
}));
this._leftRect.add_constraint(new Clutter.SnapConstraint({
source: this._topRect,
from_edge: Clutter.SnapEdge.TOP,
to_edge: Clutter.SnapEdge.BOTTOM,
}));
this._leftRect.add_constraint(new Clutter.SnapConstraint({
source: this._bottomRect,
from_edge: Clutter.SnapEdge.BOTTOM,
to_edge: Clutter.SnapEdge.TOP,
}));
this.add_child(this._leftRect);
this._rightRect = new St.Widget({ style_class: 'screenshot-ui-area-indicator-shade' });
this._rightRect.add_constraint(new Clutter.SnapConstraint({
source: this,
from_edge: Clutter.SnapEdge.RIGHT,
to_edge: Clutter.SnapEdge.RIGHT,
}));
this._rightRect.add_constraint(new Clutter.SnapConstraint({
source: this._topRect,
from_edge: Clutter.SnapEdge.TOP,
to_edge: Clutter.SnapEdge.BOTTOM,
}));
this._rightRect.add_constraint(new Clutter.SnapConstraint({
source: this._bottomRect,
from_edge: Clutter.SnapEdge.BOTTOM,
to_edge: Clutter.SnapEdge.TOP,
}));
this.add_child(this._rightRect);
this._selectionRect = new St.Widget({ style_class: 'screenshot-ui-area-indicator-selection' });
this.add_child(this._selectionRect);
this._topRect.add_constraint(new Clutter.SnapConstraint({
source: this._selectionRect,
from_edge: Clutter.SnapEdge.BOTTOM,
to_edge: Clutter.SnapEdge.TOP,
}));
this._bottomRect.add_constraint(new Clutter.SnapConstraint({
source: this._selectionRect,
from_edge: Clutter.SnapEdge.TOP,
to_edge: Clutter.SnapEdge.BOTTOM,
}));
this._leftRect.add_constraint(new Clutter.SnapConstraint({
source: this._selectionRect,
from_edge: Clutter.SnapEdge.RIGHT,
to_edge: Clutter.SnapEdge.LEFT,
}));
this._rightRect.add_constraint(new Clutter.SnapConstraint({
source: this._selectionRect,
from_edge: Clutter.SnapEdge.LEFT,
to_edge: Clutter.SnapEdge.RIGHT,
}));
}
setSelectionRect(x, y, width, height) {
this._selectionRect.set_position(x, y);
this._selectionRect.set_size(width, height);
}
});
var UIAreaSelector = GObject.registerClass({
Signals: { 'drag-started': {}, 'drag-ended': {} },
}, class UIAreaSelector extends St.Widget {
_init(params) {
super._init(params);
// During a drag, this can be Clutter.BUTTON_PRIMARY,
// Clutter.BUTTON_SECONDARY or the string "touch" to identify the source
// of the drag operation.
this._dragButton = 0;
this._dragDevice = null;
this._dragSequence = null;
this._areaIndicator = new UIAreaIndicator();
this._areaIndicator.add_constraint(new Clutter.BindConstraint({
source: this,
coordinate: Clutter.BindCoordinate.ALL,
}));
this.add_child(this._areaIndicator);
this._topLeftHandle = new St.Widget({ style_class: 'screenshot-ui-area-selector-handle' });
this.add_child(this._topLeftHandle);
this._topRightHandle = new St.Widget({ style_class: 'screenshot-ui-area-selector-handle' });
this.add_child(this._topRightHandle);
this._bottomLeftHandle = new St.Widget({ style_class: 'screenshot-ui-area-selector-handle' });
this.add_child(this._bottomLeftHandle);
this._bottomRightHandle = new St.Widget({ style_class: 'screenshot-ui-area-selector-handle' });
this.add_child(this._bottomRightHandle);
// This will be updated before the first drawn frame.
this._handleSize = 0;
this._topLeftHandle.connect('style-changed', widget => {
this._handleSize = widget.get_theme_node().get_width();
this._updateSelectionRect();
});
this.connect('notify::mapped', () => {
if (this.mapped) {
const [x, y] = global.get_pointer();
this._updateCursor(x, y);
}
});
// Initialize area to out of bounds so reset() below resets it.
this._startX = -1;
this._startY = 0;
this._lastX = 0;
this._lastY = 0;
this.reset();
}
reset() {
this.stopDrag();
global.display.set_cursor(Meta.Cursor.DEFAULT);
// Preserve area selection if possible. If the area goes out of bounds,
// the monitors might have changed, so reset the area.
const [x, y, w, h] = this.getGeometry();
if (x < 0 || y < 0 || x + w > this.width || y + h > this.height) {
// Initialize area to out of bounds so if there's no monitor,
// the area will be reset once a monitor does appear.
this._startX = -1;
this._startY = 0;
this._lastX = 0;
this._lastY = 0;
// This can happen when running headless without any monitors.
if (Main.layoutManager.primaryIndex !== -1) {
const monitor =
Main.layoutManager.monitors[Main.layoutManager.primaryIndex];
this._startX = monitor.x + Math.floor(monitor.width * 3 / 8);
this._startY = monitor.y + Math.floor(monitor.height * 3 / 8);
this._lastX = monitor.x + Math.floor(monitor.width * 5 / 8) - 1;
this._lastY = monitor.y + Math.floor(monitor.height * 5 / 8) - 1;
}
this._updateSelectionRect();
}
}
getGeometry() {
const leftX = Math.min(this._startX, this._lastX);
const topY = Math.min(this._startY, this._lastY);
const rightX = Math.max(this._startX, this._lastX);
const bottomY = Math.max(this._startY, this._lastY);
return [leftX, topY, rightX - leftX + 1, bottomY - topY + 1];
}
_updateSelectionRect() {
const [x, y, w, h] = this.getGeometry();
this._areaIndicator.setSelectionRect(x, y, w, h);
const offset = this._handleSize / 2;
this._topLeftHandle.set_position(x - offset, y - offset);
this._topRightHandle.set_position(x + w - 1 - offset, y - offset);
this._bottomLeftHandle.set_position(x - offset, y + h - 1 - offset);
this._bottomRightHandle.set_position(x + w - 1 - offset, y + h - 1 - offset);
}
_computeCursorType(cursorX, cursorY) {
const [leftX, topY, width, height] = this.getGeometry();
const [rightX, bottomY] = [leftX + width - 1, topY + height - 1];
const [x, y] = [cursorX, cursorY];
// Check if the cursor overlaps the handles first.
const limit = (this._handleSize / 2) ** 2;
if ((leftX - x) ** 2 + (topY - y) ** 2 <= limit)
return Meta.Cursor.NW_RESIZE;
else if ((rightX - x) ** 2 + (topY - y) ** 2 <= limit)
return Meta.Cursor.NE_RESIZE;
else if ((leftX - x) ** 2 + (bottomY - y) ** 2 <= limit)
return Meta.Cursor.SW_RESIZE;
else if ((rightX - x) ** 2 + (bottomY - y) ** 2 <= limit)
return Meta.Cursor.SE_RESIZE;
// Now check the rest of the rectangle.
const threshold =
10 * St.ThemeContext.get_for_stage(global.stage).scaleFactor;
if (leftX - x >= 0 && leftX - x <= threshold) {
if (topY - y >= 0 && topY - y <= threshold)
return Meta.Cursor.NW_RESIZE;
else if (y - bottomY >= 0 && y - bottomY <= threshold)
return Meta.Cursor.SW_RESIZE;
else if (topY - y < 0 && y - bottomY < 0)
return Meta.Cursor.WEST_RESIZE;
} else if (x - rightX >= 0 && x - rightX <= threshold) {
if (topY - y >= 0 && topY - y <= threshold)
return Meta.Cursor.NE_RESIZE;
else if (y - bottomY >= 0 && y - bottomY <= threshold)
return Meta.Cursor.SE_RESIZE;
else if (topY - y < 0 && y - bottomY < 0)
return Meta.Cursor.EAST_RESIZE;
} else if (leftX - x < 0 && x - rightX < 0) {
if (topY - y >= 0 && topY - y <= threshold)
return Meta.Cursor.NORTH_RESIZE;
else if (y - bottomY >= 0 && y - bottomY <= threshold)
return Meta.Cursor.SOUTH_RESIZE;
else if (topY - y < 0 && y - bottomY < 0)
return Meta.Cursor.MOVE_OR_RESIZE_WINDOW;
}
return Meta.Cursor.CROSSHAIR;
}
stopDrag() {
if (!this._dragButton)
return;
if (this._dragSequence)
this._dragDevice.sequence_ungrab(this._dragSequence);
else
this._dragDevice.ungrab();
this._dragButton = 0;
this._dragDevice = null;
this._dragSequence = null;
if (this._dragCursor === Meta.Cursor.CROSSHAIR &&
this._lastX === this._startX && this._lastY === this._startY) {
// The user clicked without dragging. Make up a larger selection
// to reduce confusion.
const offset =
20 * St.ThemeContext.get_for_stage(global.stage).scaleFactor;
this._startX -= offset;
this._startY -= offset;
this._lastX += offset;
this._lastY += offset;
// Keep the coordinates inside the stage.
if (this._startX < 0) {
this._lastX -= this._startX;
this._startX = 0;
} else if (this._lastX >= this.width) {
this._startX -= this._lastX - this.width + 1;
this._lastX = this.width - 1;
}
if (this._startY < 0) {
this._lastY -= this._startY;
this._startY = 0;
} else if (this._lastY >= this.height) {
this._startY -= this._lastY - this.height + 1;
this._lastY = this.height - 1;
}
this._updateSelectionRect();
}
this.emit('drag-ended');
}
_updateCursor(x, y) {
const cursor = this._computeCursorType(x, y);
global.display.set_cursor(cursor);
}
_onPress(event, button, sequence) {
if (this._dragButton)
return Clutter.EVENT_PROPAGATE;
const cursor = this._computeCursorType(event.x, event.y);
// Clicking outside of the selection, or using the right mouse button,
// or with Ctrl results in dragging a new selection from scratch.
if (cursor === Meta.Cursor.CROSSHAIR ||
button === Clutter.BUTTON_SECONDARY ||
(event.modifier_state & Clutter.ModifierType.CONTROL_MASK)) {
this._dragButton = button;
this._dragCursor = Meta.Cursor.CROSSHAIR;
global.display.set_cursor(Meta.Cursor.CROSSHAIR);
[this._startX, this._startY] = [event.x, event.y];
this._lastX = this._startX = Math.floor(this._startX);
this._lastY = this._startY = Math.floor(this._startY);
this._updateSelectionRect();
} else {
// This is a move or resize operation.
this._dragButton = button;
this._dragCursor = cursor;
this._dragStartX = event.x;
this._dragStartY = event.y;
const [leftX, topY, width, height] = this.getGeometry();
const rightX = leftX + width - 1;
const bottomY = topY + height - 1;
// For moving, start X and Y are the top left corner, while
// last X and Y are the bottom right corner.
if (cursor === Meta.Cursor.MOVE_OR_RESIZE_WINDOW) {
this._startX = leftX;
this._startY = topY;
this._lastX = rightX;
this._lastY = bottomY;
}
// Start X and Y are set to the stationary sides, while last X
// and Y are set to the moving sides.
if (cursor === Meta.Cursor.NW_RESIZE ||
cursor === Meta.Cursor.WEST_RESIZE ||
cursor === Meta.Cursor.SW_RESIZE) {
this._startX = rightX;
this._lastX = leftX;
}
if (cursor === Meta.Cursor.NE_RESIZE ||
cursor === Meta.Cursor.EAST_RESIZE ||
cursor === Meta.Cursor.SE_RESIZE) {
this._startX = leftX;
this._lastX = rightX;
}
if (cursor === Meta.Cursor.NW_RESIZE ||
cursor === Meta.Cursor.NORTH_RESIZE ||
cursor === Meta.Cursor.NE_RESIZE) {
this._startY = bottomY;
this._lastY = topY;
}
if (cursor === Meta.Cursor.SW_RESIZE ||
cursor === Meta.Cursor.SOUTH_RESIZE ||
cursor === Meta.Cursor.SE_RESIZE) {
this._startY = topY;
this._lastY = bottomY;
}
}
if (this._dragButton) {
const device = event.device;
if (sequence)
device.sequence_grab(sequence, this);
else
device.grab(this);
this._dragDevice = device;
this._dragSequence = sequence;
this.emit('drag-started');
return Clutter.EVENT_STOP;
}
return Clutter.EVENT_PROPAGATE;
}
_onRelease(event, button, sequence) {
if (this._dragButton !== button ||
this._dragSequence?.get_slot() !== sequence?.get_slot())
return Clutter.EVENT_PROPAGATE;
this.stopDrag();
// We might have finished creating a new selection, so we need to
// update the cursor.
this._updateCursor(event.x, event.y);
return Clutter.EVENT_STOP;
}
_onMotion(event, sequence) {
if (!this._dragButton) {
this._updateCursor(event.x, event.y);
return Clutter.EVENT_PROPAGATE;
}
if (sequence?.get_slot() !== this._dragSequence?.get_slot())
return Clutter.EVENT_PROPAGATE;
if (this._dragCursor === Meta.Cursor.CROSSHAIR) {
[this._lastX, this._lastY] = [event.x, event.y];
this._lastX = Math.floor(this._lastX);
this._lastY = Math.floor(this._lastY);
} else {
let dx = Math.round(event.x - this._dragStartX);
let dy = Math.round(event.y - this._dragStartY);
if (this._dragCursor === Meta.Cursor.MOVE_OR_RESIZE_WINDOW) {
const [,, selectionWidth, selectionHeight] = this.getGeometry();
let newStartX = this._startX + dx;
let newStartY = this._startY + dy;
let newLastX = this._lastX + dx;
let newLastY = this._lastY + dy;
let overshootX = 0;
let overshootY = 0;
// Keep the size intact if we bumped into the stage edge.
if (newStartX < 0) {
overshootX = 0 - newStartX;
newStartX = 0;
newLastX = newStartX + (selectionWidth - 1);
} else if (newLastX > this.width - 1) {
overshootX = (this.width - 1) - newLastX;
newLastX = this.width - 1;
newStartX = newLastX - (selectionWidth - 1);
}
if (newStartY < 0) {
overshootY = 0 - newStartY;
newStartY = 0;
newLastY = newStartY + (selectionHeight - 1);
} else if (newLastY > this.height - 1) {
overshootY = (this.height - 1) - newLastY;
newLastY = this.height - 1;
newStartY = newLastY - (selectionHeight - 1);
}
// Add the overshoot to the delta to create a "rubberbanding"
// behavior of the pointer when dragging.
dx += overshootX;
dy += overshootY;
this._startX = newStartX;
this._startY = newStartY;
this._lastX = newLastX;
this._lastY = newLastY;
} else {
if (this._dragCursor === Meta.Cursor.WEST_RESIZE ||
this._dragCursor === Meta.Cursor.EAST_RESIZE)
dy = 0;
if (this._dragCursor === Meta.Cursor.NORTH_RESIZE ||
this._dragCursor === Meta.Cursor.SOUTH_RESIZE)
dx = 0;
// Make sure last X and Y are clamped between 0 and size - 1,
// while always preserving the cursor dragging position relative
// to the selection rectangle.
this._lastX += dx;
if (this._lastX >= this.width) {
dx -= this._lastX - this.width + 1;
this._lastX = this.width - 1;
} else if (this._lastX < 0) {
dx -= this._lastX;
this._lastX = 0;
}
this._lastY += dy;
if (this._lastY >= this.height) {
dy -= this._lastY - this.height + 1;
this._lastY = this.height - 1;
} else if (this._lastY < 0) {
dy -= this._lastY;
this._lastY = 0;
}
// If we drag the handle past a selection side, update which
// handles are which.
if (this._lastX > this._startX) {
if (this._dragCursor === Meta.Cursor.NW_RESIZE)
this._dragCursor = Meta.Cursor.NE_RESIZE;
else if (this._dragCursor === Meta.Cursor.SW_RESIZE)
this._dragCursor = Meta.Cursor.SE_RESIZE;
else if (this._dragCursor === Meta.Cursor.WEST_RESIZE)
this._dragCursor = Meta.Cursor.EAST_RESIZE;
} else {
// eslint-disable-next-line no-lonely-if
if (this._dragCursor === Meta.Cursor.NE_RESIZE)
this._dragCursor = Meta.Cursor.NW_RESIZE;
else if (this._dragCursor === Meta.Cursor.SE_RESIZE)
this._dragCursor = Meta.Cursor.SW_RESIZE;
else if (this._dragCursor === Meta.Cursor.EAST_RESIZE)
this._dragCursor = Meta.Cursor.WEST_RESIZE;
}
if (this._lastY > this._startY) {
if (this._dragCursor === Meta.Cursor.NW_RESIZE)
this._dragCursor = Meta.Cursor.SW_RESIZE;
else if (this._dragCursor === Meta.Cursor.NE_RESIZE)
this._dragCursor = Meta.Cursor.SE_RESIZE;
else if (this._dragCursor === Meta.Cursor.NORTH_RESIZE)
this._dragCursor = Meta.Cursor.SOUTH_RESIZE;
} else {
// eslint-disable-next-line no-lonely-if
if (this._dragCursor === Meta.Cursor.SW_RESIZE)
this._dragCursor = Meta.Cursor.NW_RESIZE;
else if (this._dragCursor === Meta.Cursor.SE_RESIZE)
this._dragCursor = Meta.Cursor.NE_RESIZE;
else if (this._dragCursor === Meta.Cursor.SOUTH_RESIZE)
this._dragCursor = Meta.Cursor.NORTH_RESIZE;
}
global.display.set_cursor(this._dragCursor);
}
this._dragStartX += dx;
this._dragStartY += dy;
}
this._updateSelectionRect();
return Clutter.EVENT_STOP;
}
vfunc_button_press_event(event) {
if (event.button === Clutter.BUTTON_PRIMARY ||
event.button === Clutter.BUTTON_SECONDARY)
return this._onPress(event, event.button, null);
return Clutter.EVENT_PROPAGATE;
}
vfunc_button_release_event(event) {
if (event.button === Clutter.BUTTON_PRIMARY ||
event.button === Clutter.BUTTON_SECONDARY)
return this._onRelease(event, event.button, null);
return Clutter.EVENT_PROPAGATE;
}
vfunc_motion_event(event) {
return this._onMotion(event, null);
}
vfunc_touch_event(event) {
if (event.type === Clutter.EventType.TOUCH_BEGIN)
return this._onPress(event, 'touch', event.sequence);
else if (event.type === Clutter.EventType.TOUCH_END)
return this._onRelease(event, 'touch', event.sequence);
else if (event.type === Clutter.EventType.TOUCH_UPDATE)
return this._onMotion(event, event.sequence);
return Clutter.EVENT_PROPAGATE;
}
vfunc_leave_event(event) {
// If we're dragging and go over the panel we still get a leave event
// for some reason, even though we have a grab. We don't want to switch
// the cursor when we're dragging.
if (!this._dragButton)
global.display.set_cursor(Meta.Cursor.DEFAULT);
return super.vfunc_leave_event(event);
}
});
var UIWindowSelectorLayout = GObject.registerClass(
class UIWindowSelectorLayout extends Workspace.WorkspaceLayout {
_init(monitorIndex) {
super._init(null, monitorIndex, null);
}
vfunc_set_container(container) {
this._container = container;
this._syncWorkareaTracking();
}
vfunc_allocate(container, box) {
const containerBox = container.allocation;
const containerAllocationChanged =
this._lastBox === null || !this._lastBox.equal(containerBox);
this._lastBox = containerBox.copy();
let layoutChanged = false;
if (this._layout === null) {
this._layout = this._createBestLayout(this._workarea);
layoutChanged = true;
}
if (layoutChanged || containerAllocationChanged)
this._windowSlots = this._getWindowSlots(box.copy());
const childBox = new Clutter.ActorBox();
const nSlots = this._windowSlots.length;
for (let i = 0; i < nSlots; i++) {
let [x, y, width, height, child] = this._windowSlots[i];
childBox.set_origin(x, y);
childBox.set_size(width, height);
child.allocate(childBox);
}
}
addWindow(window) {
if (this._sortedWindows.includes(window))
return;
this._sortedWindows.push(window);
this._container.add_child(window);
this._layout = null;
this.layout_changed();
}
reset() {
for (const window of this._sortedWindows)
window.destroy();
this._sortedWindows = [];
this._windowSlots = [];
this._layout = null;
}
get windows() {
return this._sortedWindows;
}
});
var UIWindowSelectorWindow = GObject.registerClass(
class UIWindowSelectorWindow extends St.Button {
_init(actor, params) {
super._init(params);
const window = actor.metaWindow;
this._boundingBox = window.get_frame_rect();
this._bufferRect = window.get_buffer_rect();
this._bufferScale = actor.get_resource_scale();
this._actor = new Clutter.Actor({
content: actor.paint_to_content(null),
});
this.add_child(this._actor);
this._border = new St.Bin({ style_class: 'screenshot-ui-window-selector-window-border' });
this._border.connect('style-changed', () => {
this._borderSize =
this._border.get_theme_node().get_border_width(St.Side.TOP);
});
this.add_child(this._border);
this.connect('destroy', this._onDestroy.bind(this));
}
get boundingBox() {
return this._boundingBox;
}
get windowCenter() {
const boundingBox = this.boundingBox;
return {
x: boundingBox.x + boundingBox.width / 2,
y: boundingBox.y + boundingBox.height / 2,
};
}
chromeHeights() {
return [0, 0];
}
chromeWidths() {
return [0, 0];
}
overlapHeights() {
return [0, 0];
}
get bufferScale() {
return this._bufferScale;
}
get windowContent() {
return this._actor.content;
}
_onDestroy() {
this.remove_child(this._actor);
this._actor.destroy();
this._actor = null;
this.remove_child(this._border);
this._border.destroy();
this._border = null;
}
vfunc_allocate(box) {
this.set_allocation(box);
// Border goes around the window.
const borderBox = box.copy();
borderBox.set_origin(0, 0);
borderBox.x1 -= this._borderSize;
borderBox.y1 -= this._borderSize;
borderBox.x2 += this._borderSize;
borderBox.y2 += this._borderSize;
this._border.allocate(borderBox);
// box should contain this._boundingBox worth of window. Compute
// origin and size for the actor box to satisfy that.
const xScale = box.get_width() / this._boundingBox.width;
const yScale = box.get_height() / this._boundingBox.height;
const [, windowW, windowH] = this._actor.content.get_preferred_size();
const actorBox = new Clutter.ActorBox();
actorBox.set_origin(
(this._bufferRect.x - this._boundingBox.x) * xScale,
(this._bufferRect.y - this._boundingBox.y) * yScale
);
actorBox.set_size(
windowW * xScale / this._bufferScale,
windowH * yScale / this._bufferScale
);
this._actor.allocate(actorBox);
}
});
var UIWindowSelector = GObject.registerClass(
class UIWindowSelector extends St.Widget {
_init(monitorIndex, params) {
super._init(params);
super.layout_manager = new Clutter.BinLayout();
this._monitorIndex = monitorIndex;
this._layoutManager = new UIWindowSelectorLayout(monitorIndex);
// Window screenshots
this._container = new St.Widget({
style_class: 'screenshot-ui-window-selector-window-container',
x_expand: true,
y_expand: true,
});
this._container.layout_manager = this._layoutManager;
this.add_child(this._container);
}
capture() {
for (const actor of global.get_window_actors()) {
let window = actor.metaWindow;
let workspaceManager = global.workspace_manager;
let activeWorkspace = workspaceManager.get_active_workspace();
if (window.is_override_redirect() ||
!window.located_on_workspace(activeWorkspace) ||
window.get_monitor() !== this._monitorIndex)
continue;
const widget = new UIWindowSelectorWindow(
actor,
{
style_class: 'screenshot-ui-window-selector-window',
reactive: true,
can_focus: true,
toggle_mode: true,
}
);
widget.connect('key-focus-in', win => {
Main.screenshotUI.grab_key_focus();
win.checked = true;
});
if (window.has_focus()) {
widget.checked = true;
widget.toggle_mode = false;
}
this._layoutManager.addWindow(widget);
}
}
reset() {
this._layoutManager.reset();
}
windows() {
return this._layoutManager.windows;
}
});
var ScreenshotUI = GObject.registerClass(
class ScreenshotUI extends St.Widget {
_init() {
super._init({
name: 'screenshot-ui',
constraints: new Clutter.BindConstraint({
source: global.stage,
coordinate: Clutter.BindCoordinate.ALL,
}),
layout_manager: new Clutter.BinLayout(),
opacity: 0,
visible: false,
});
// The full-screen screenshot has a separate container so that we can
// show it without the screenshot UI fade-in for a nicer animation.
this._stageScreenshotContainer = new St.Widget({ visible: false });
this._stageScreenshotContainer.add_constraint(new Clutter.BindConstraint({
source: global.stage,
coordinate: Clutter.BindCoordinate.ALL,
}));
Main.layoutManager.screenshotUIGroup.add_child(
this._stageScreenshotContainer);
Main.layoutManager.screenshotUIGroup.add_child(this);
this._stageScreenshot = new St.Widget({ style_class: 'screenshot-ui-screen-screenshot' });
this._stageScreenshot.add_constraint(new Clutter.BindConstraint({
source: global.stage,
coordinate: Clutter.BindCoordinate.ALL,
}));
this._stageScreenshotContainer.add_child(this._stageScreenshot);
this._openingCoroutineInProgress = false;
this._grabHelper = new GrabHelper.GrabHelper(this, {
actionMode: Shell.ActionMode.POPUP,
});
this._areaSelector = new UIAreaSelector({
style_class: 'screenshot-ui-area-selector',
x_expand: true,
y_expand: true,
reactive: true,
});
this.add_child(this._areaSelector);
this._primaryMonitorBin = new St.Widget({ layout_manager: new Clutter.BinLayout() });
this._primaryMonitorBin.add_constraint(
new Layout.MonitorConstraint({ 'primary': true }));
this.add_child(this._primaryMonitorBin);
this._panel = new St.BoxLayout({
style_class: 'screenshot-ui-panel',
y_align: Clutter.ActorAlign.END,
y_expand: true,
vertical: true,
});
this._primaryMonitorBin.add_child(this._panel);
this._closeButton = new St.Button({
style_class: 'screenshot-ui-close-button',
x_align: Clutter.ActorAlign.END,
y_align: Clutter.ActorAlign.START,
x_expand: true,
y_expand: true,
});
this._closeButton.set_child(new St.Icon({ icon_name: 'window-close-symbolic' }));
this._closeButton.connect('clicked', () => this.close());
this._primaryMonitorBin.add_child(this._closeButton);
this._areaSelector.connect('drag-started', () => {
this._panel.ease({
opacity: 100,
duration: 200,
mode: Clutter.AnimationMode.EASE_OUT_QUAD,
});
this._closeButton.ease({
opacity: 100,
duration: 200,
mode: Clutter.AnimationMode.EASE_OUT_QUAD,
});
});
this._areaSelector.connect('drag-ended', () => {
this._panel.ease({
opacity: 255,
duration: 200,
mode: Clutter.AnimationMode.EASE_OUT_QUAD,
});
this._closeButton.ease({
opacity: 255,
duration: 200,
mode: Clutter.AnimationMode.EASE_OUT_QUAD,
});
});
this._typeButtonContainer = new St.Widget({
style_class: 'screenshot-ui-type-button-container',
layout_manager: new Clutter.BoxLayout({
spacing: 12,
homogeneous: true,
}),
});
this._panel.add_child(this._typeButtonContainer);
this._selectionButton = new IconLabelButton('input-mouse-symbolic', _('Selection'), {
style_class: 'screenshot-ui-type-button',
checked: true,
x_expand: true,
});
this._selectionButton.connect('notify::checked',
this._onSelectionButtonToggled.bind(this));
this._typeButtonContainer.add_child(this._selectionButton);
this._screenButton = new IconLabelButton('video-display-symbolic', _('Screen'), {
style_class: 'screenshot-ui-type-button',
toggle_mode: true,
x_expand: true,
});
this._screenButton.connect('notify::checked',
this._onScreenButtonToggled.bind(this));
this._typeButtonContainer.add_child(this._screenButton);
this._windowButton = new IconLabelButton('focus-windows-symbolic', _('Window'), {
style_class: 'screenshot-ui-type-button',
toggle_mode: true,
x_expand: true,
});
this._windowButton.connect('notify::checked',
this._onWindowButtonToggled.bind(this));
this._typeButtonContainer.add_child(this._windowButton);
this._bottomRowContainer = new St.Widget({ layout_manager: new Clutter.BinLayout() });
this._panel.add_child(this._bottomRowContainer);
this._captureButton = new St.Button({ style_class: 'screenshot-ui-capture-button' });
this._captureButton.set_child(new St.Widget({
style_class: 'screenshot-ui-capture-button-circle',
}));
this._captureButton.connect('clicked',
this._onCaptureButtonClicked.bind(this));
this._bottomRowContainer.add_child(this._captureButton);
this._monitorBins = [];
this._windowSelectors = [];
this._rebuildMonitorBins();
Main.layoutManager.connect('monitors-changed', () => {
// Nope, not dealing with monitor changes.
this.close(true);
this._rebuildMonitorBins();
});
Main.wm.addKeybinding(
'show-screenshot-ui',
new Gio.Settings({ schema_id: 'org.gnome.shell.keybindings' }),
Meta.KeyBindingFlags.IGNORE_AUTOREPEAT,
Shell.ActionMode.NORMAL |
Shell.ActionMode.OVERVIEW |
Shell.ActionMode.SYSTEM_MODAL |
Shell.ActionMode.LOOKING_GLASS |
Shell.ActionMode.POPUP,
showScreenshotUI
);
}
_rebuildMonitorBins() {
for (const bin of this._monitorBins)
bin.destroy();
this._monitorBins = [];
this._windowSelectors = [];
this._screenSelectors = [];
for (let i = 0; i < Main.layoutManager.monitors.length; i++) {
const bin = new St.Widget({
layout_manager: new Clutter.BinLayout(),
});
bin.add_constraint(new Layout.MonitorConstraint({ 'index': i }));
this.insert_child_below(bin, this._primaryMonitorBin);
this._monitorBins.push(bin);
const windowSelector = new UIWindowSelector(i, {
style_class: 'screenshot-ui-window-selector',
x_expand: true,
y_expand: true,
visible: this._windowButton.checked,
});
if (i === Main.layoutManager.primaryIndex)
windowSelector.add_style_pseudo_class('primary-monitor');
bin.add_child(windowSelector);
this._windowSelectors.push(windowSelector);
const screenSelector = new St.Button({
style_class: 'screenshot-ui-screen-selector',
x_expand: true,
y_expand: true,
visible: this._screenButton.checked,
reactive: true,
can_focus: true,
toggle_mode: true,
});
screenSelector.connect('key-focus-in', () => {
this.grab_key_focus();
screenSelector.checked = true;
});
bin.add_child(screenSelector);
this._screenSelectors.push(screenSelector);
screenSelector.connect('notify::checked', () => {
if (!screenSelector.checked)
return;
screenSelector.toggle_mode = false;
for (const otherSelector of this._screenSelectors) {
if (screenSelector === otherSelector)
continue;
otherSelector.toggle_mode = true;
otherSelector.checked = false;
}
});
}
if (Main.layoutManager.primaryIndex !== -1)
this._screenSelectors[Main.layoutManager.primaryIndex].checked = true;
}
async open() {
if (this._openingCoroutineInProgress)
return;
if (!this.visible) {
// Screenshot UI is opening from completely closed state
// (rather than opening back from in process of closing).
for (const selector of this._windowSelectors)
selector.capture();
const windows =
this._windowSelectors.flatMap(selector => selector.windows());
for (const window of windows) {
window.connect('notify::checked', () => {
if (!window.checked)
return;
window.toggle_mode = false;
for (const otherWindow of windows) {
if (window === otherWindow)
continue;
otherWindow.toggle_mode = true;
otherWindow.checked = false;
}
});
}
this._windowButton.reactive = windows.length > 0;
if (!this._windowButton.reactive)
this._selectionButton.checked = true;
this._shooter = new Shell.Screenshot();
this._openingCoroutineInProgress = true;
try {
const [content, scale] =
await this._shooter.screenshot_stage_to_content();
this._stageScreenshot.set_content(content);
this._scale = scale;
this._stageScreenshotContainer.show();
} catch (e) {
log('Error capturing screenshot: %s'.format(e.message));
}
this._openingCoroutineInProgress = false;
}
// Get rid of any popup menus.
// We already have them captured on the screenshot anyway.
//
// This needs to happen before the grab below as closing menus will
// pop their grabs.
Main.layoutManager.emit('system-modal-opened');
const grabResult = this._grabHelper.grab({
actor: this,
onUngrab: () => this.close(),
});
if (!grabResult)
return;
this.remove_all_transitions();
this.visible = true;
this.ease({
opacity: 255,
duration: 200,
mode: Clutter.AnimationMode.EASE_OUT_QUAD,
onComplete: () => {
this._stageScreenshotContainer.get_parent().remove_child(
this._stageScreenshotContainer);
this.insert_child_at_index(this._stageScreenshotContainer, 0);
},
});
}
_finishClosing() {
this.hide();
this._shooter = null;
this._stageScreenshotContainer.get_parent().remove_child(
this._stageScreenshotContainer);
Main.layoutManager.screenshotUIGroup.insert_child_at_index(
this._stageScreenshotContainer, 0);
this._stageScreenshotContainer.hide();
this._stageScreenshot.set_content(null);
this._areaSelector.reset();
for (const selector of this._windowSelectors)
selector.reset();
}
close(instantly = false) {
this._grabHelper.ungrab();
if (instantly) {
this._finishClosing();
return;
}
this.remove_all_transitions();
this.ease({
opacity: 0,
duration: 200,
mode: Clutter.AnimationMode.EASE_OUT_QUAD,
onComplete: this._finishClosing.bind(this),
});
}
_onSelectionButtonToggled() {
if (this._selectionButton.checked) {
this._selectionButton.toggle_mode = false;
this._windowButton.checked = false;
this._screenButton.checked = false;
this._areaSelector.show();
this._areaSelector.remove_all_transitions();
this._areaSelector.reactive = true;
this._areaSelector.ease({
opacity: 255,
duration: 200,
mode: Clutter.AnimationMode.EASE_OUT_QUAD,
});
} else {
this._selectionButton.toggle_mode = true;
this._areaSelector.stopDrag();
global.display.set_cursor(Meta.Cursor.DEFAULT);
this._areaSelector.remove_all_transitions();
this._areaSelector.reactive = false;
this._areaSelector.ease({
opacity: 0,
duration: 200,
mode: Clutter.AnimationMode.EASE_OUT_QUAD,
onComplete: () => this._areaSelector.hide(),
});
}
}
_onScreenButtonToggled() {
if (this._screenButton.checked) {
this._screenButton.toggle_mode = false;
this._selectionButton.checked = false;
this._windowButton.checked = false;
for (const selector of this._screenSelectors) {
selector.show();
selector.remove_all_transitions();
selector.ease({
opacity: 255,
duration: 200,
mode: Clutter.AnimationMode.EASE_OUT_QUAD,
});
}
} else {
this._screenButton.toggle_mode = true;
for (const selector of this._screenSelectors) {
selector.remove_all_transitions();
selector.ease({
opacity: 0,
duration: 200,
mode: Clutter.AnimationMode.EASE_OUT_QUAD,
onComplete: () => selector.hide(),
});
}
}
}
_onWindowButtonToggled() {
if (this._windowButton.checked) {
this._windowButton.toggle_mode = false;
this._selectionButton.checked = false;
this._screenButton.checked = false;
for (const selector of this._windowSelectors) {
selector.show();
selector.remove_all_transitions();
selector.ease({
opacity: 255,
duration: 200,
mode: Clutter.AnimationMode.EASE_OUT_QUAD,
});
}
} else {
this._windowButton.toggle_mode = true;
for (const selector of this._windowSelectors) {
selector.remove_all_transitions();
selector.ease({
opacity: 0,
duration: 200,
mode: Clutter.AnimationMode.EASE_OUT_QUAD,
onComplete: () => selector.hide(),
});
}
}
}
_getSelectedGeometry() {
let x, y, w, h;
if (this._selectionButton.checked) {
[x, y, w, h] = this._areaSelector.getGeometry();
} else if (this._screenButton.checked) {
const index =
this._screenSelectors.findIndex(screen => screen.checked);
const monitor = Main.layoutManager.monitors[index];
x = monitor.x;
y = monitor.y;
w = monitor.width;
h = monitor.height;
}
x *= this._scale;
y *= this._scale;
w *= this._scale;
h *= this._scale;
return [x, y, w, h];
}
_onCaptureButtonClicked() {
global.display.get_sound_player().play_from_theme(
'screen-capture', _('Screenshot taken'), null);
if (this._selectionButton.checked || this._screenButton.checked) {
const content = this._stageScreenshot.get_content();
if (!content) {
// Failed to capture the screenshot for some reason.
this.close();
return;
}
const texture = content.get_texture();
const stream = Gio.MemoryOutputStream.new_resizable();
const [x, y, w, h] = this._getSelectedGeometry();
Shell.Screenshot.composite_to_stream(
texture,
x, y, w, h,
stream
).then(() => {
stream.close(null);
const clipboard = St.Clipboard.get_default();
clipboard.set_content(
St.ClipboardType.CLIPBOARD,
'image/png',
stream.steal_as_bytes()
);
}).catch(err => {
logError(err, 'Error capturing screenshot');
});
} else if (this._windowButton.checked) {
const window =
this._windowSelectors.flatMap(selector => selector.windows())
.find(win => win.checked);
if (!window)
return;
const content = window.windowContent;
if (!content) {
this.close();
return;
}
const texture = content.get_texture();
const stream = Gio.MemoryOutputStream.new_resizable();
Shell.Screenshot.composite_to_stream(
texture,
0, 0, -1, -1,
stream
).then(() => {
stream.close(null);
const clipboard = St.Clipboard.get_default();
clipboard.set_content(
St.ClipboardType.CLIPBOARD,
'image/png',
stream.steal_as_bytes()
);
}).catch(err => {
logError(err, 'Error capturing screenshot');
});
}
this.close();
}
vfunc_key_press_event(event) {
const symbol = event.keyval;
if (symbol === Clutter.KEY_Return || symbol === Clutter.KEY_space ||
((event.modifier_state & Clutter.ModifierType.CONTROL_MASK) &&
(symbol === Clutter.KEY_c || symbol === Clutter.KEY_C))) {
this._onCaptureButtonClicked();
return Clutter.EVENT_STOP;
}
return super.vfunc_key_press_event(event);
}
});
/**
* Shows the screenshot UI.
*/
function showScreenshotUI() {
Main.screenshotUI.open().catch(err => {
logError(err, 'Error opening the screenshot UI');
});
}
var ScreenshotService = class {
constructor() {
this._dbusImpl = Gio.DBusExportedObject.wrapJSObject(ScreenshotIface, this);
this._dbusImpl.export(Gio.DBus.session, '/org/gnome/Shell/Screenshot');
this._screenShooter = new Map();
this._senderChecker = new DBusSenderChecker([
'org.gnome.SettingsDaemon.MediaKeys',
'org.freedesktop.impl.portal.desktop.gtk',
'org.freedesktop.impl.portal.desktop.gnome',
'org.gnome.Screenshot',
]);
this._lockdownSettings = new Gio.Settings({ schema_id: 'org.gnome.desktop.lockdown' });
Gio.DBus.session.own_name('org.gnome.Shell.Screenshot', Gio.BusNameOwnerFlags.REPLACE, null, null);
}
async _createScreenshot(invocation, needsDisk = true, restrictCallers = true) {
let lockedDown = false;
if (needsDisk)
lockedDown = this._lockdownSettings.get_boolean('disable-save-to-disk');
let sender = invocation.get_sender();
if (this._screenShooter.has(sender)) {
invocation.return_error_literal(
Gio.IOErrorEnum, Gio.IOErrorEnum.BUSY,
'There is an ongoing operation for this sender');
return null;
} else if (lockedDown) {
invocation.return_error_literal(
Gio.IOErrorEnum, Gio.IOErrorEnum.PERMISSION_DENIED,
'Saving to disk is disabled');
return null;
} else if (restrictCallers) {
try {
await this._senderChecker.checkInvocation(invocation);
} catch (e) {
invocation.return_gerror(e);
return null;
}
}
let shooter = new Shell.Screenshot();
shooter._watchNameId =
Gio.bus_watch_name(Gio.BusType.SESSION, sender, 0, null,
this._onNameVanished.bind(this));
this._screenShooter.set(sender, shooter);
return shooter;
}
_onNameVanished(connection, name) {
this._removeShooterForSender(name);
}
_removeShooterForSender(sender) {
let shooter = this._screenShooter.get(sender);
if (!shooter)
return;
Gio.bus_unwatch_name(shooter._watchNameId);
this._screenShooter.delete(sender);
}
_checkArea(x, y, width, height) {
return x >= 0 && y >= 0 &&
width > 0 && height > 0 &&
x + width <= global.screen_width &&
y + height <= global.screen_height;
}
*_resolveRelativeFilename(filename) {
filename = filename.replace(/\.png$/, '');
let path = [
GLib.get_user_special_dir(GLib.UserDirectory.DIRECTORY_PICTURES),
GLib.get_home_dir(),
].find(p => p && GLib.file_test(p, GLib.FileTest.EXISTS));
if (!path)
return null;
yield Gio.File.new_for_path(
GLib.build_filenamev([path, '%s.png'.format(filename)]));
for (let idx = 1; ; idx++) {
yield Gio.File.new_for_path(
GLib.build_filenamev([path, '%s-%s.png'.format(filename, idx)]));
}
}
_createStream(filename, invocation) {
if (filename == '')
return [Gio.MemoryOutputStream.new_resizable(), null];
if (GLib.path_is_absolute(filename)) {
try {
let file = Gio.File.new_for_path(filename);
let stream = file.replace(null, false, Gio.FileCreateFlags.NONE, null);
return [stream, file];
} catch (e) {
invocation.return_gerror(e);
this._removeShooterForSender(invocation.get_sender());
return [null, null];
}
}
let err;
for (let file of this._resolveRelativeFilename(filename)) {
try {
let stream = file.create(Gio.FileCreateFlags.NONE, null);
return [stream, file];
} catch (e) {
err = e;
if (!e.matches(Gio.IOErrorEnum, Gio.IOErrorEnum.EXISTS))
break;
}
}
invocation.return_gerror(err);
this._removeShooterForSender(invocation.get_sender());
return [null, null];
}
_flashAsync(shooter) {
return new Promise((resolve, _reject) => {
shooter.connect('screenshot_taken', (s, area) => {
const flashspot = new Flashspot(area);
flashspot.fire(resolve);
global.display.get_sound_player().play_from_theme(
'screen-capture', _('Screenshot taken'), null);
});
});
}
_onScreenshotComplete(stream, file, invocation) {
stream.close(null);
let filenameUsed = '';
if (file) {
filenameUsed = file.get_path();
} else {
let bytes = stream.steal_as_bytes();
let clipboard = St.Clipboard.get_default();
clipboard.set_content(St.ClipboardType.CLIPBOARD, 'image/png', bytes);
}
let retval = GLib.Variant.new('(bs)', [true, filenameUsed]);
invocation.return_value(retval);
}
_scaleArea(x, y, width, height) {
let scaleFactor = St.ThemeContext.get_for_stage(global.stage).scale_factor;
x *= scaleFactor;
y *= scaleFactor;
width *= scaleFactor;
height *= scaleFactor;
return [x, y, width, height];
}
_unscaleArea(x, y, width, height) {
let scaleFactor = St.ThemeContext.get_for_stage(global.stage).scale_factor;
x /= scaleFactor;
y /= scaleFactor;
width /= scaleFactor;
height /= scaleFactor;
return [x, y, width, height];
}
async ScreenshotAreaAsync(params, invocation) {
let [x, y, width, height, flash, filename] = params;
[x, y, width, height] = this._scaleArea(x, y, width, height);
if (!this._checkArea(x, y, width, height)) {
invocation.return_error_literal(Gio.IOErrorEnum,
Gio.IOErrorEnum.CANCELLED,
"Invalid params");
return;
}
let screenshot = await this._createScreenshot(invocation);
if (!screenshot)
return;
let [stream, file] = this._createStream(filename, invocation);
if (!stream)
return;
try {
await Promise.all([
flash ? this._flashAsync(screenshot) : null,
screenshot.screenshot_area(x, y, width, height, stream),
]);
this._onScreenshotComplete(stream, file, invocation);
} catch (e) {
invocation.return_value(new GLib.Variant('(bs)', [false, '']));
} finally {
this._removeShooterForSender(invocation.get_sender());
}
}
async ScreenshotWindowAsync(params, invocation) {
let [includeFrame, includeCursor, flash, filename] = params;
let screenshot = await this._createScreenshot(invocation);
if (!screenshot)
return;
let [stream, file] = this._createStream(filename, invocation);
if (!stream)
return;
try {
await Promise.all([
flash ? this._flashAsync(screenshot) : null,
screenshot.screenshot_window(includeFrame, includeCursor, stream),
]);
this._onScreenshotComplete(stream, file, invocation);
} catch (e) {
invocation.return_value(new GLib.Variant('(bs)', [false, '']));
} finally {
this._removeShooterForSender(invocation.get_sender());
}
}
async ScreenshotAsync(params, invocation) {
let [includeCursor, flash, filename] = params;
let screenshot = await this._createScreenshot(invocation);
if (!screenshot)
return;
let [stream, file] = this._createStream(filename, invocation);
if (!stream)
return;
try {
await Promise.all([
flash ? this._flashAsync(screenshot) : null,
screenshot.screenshot(includeCursor, stream),
]);
this._onScreenshotComplete(stream, file, invocation);
} catch (e) {
invocation.return_value(new GLib.Variant('(bs)', [false, '']));
} finally {
this._removeShooterForSender(invocation.get_sender());
}
}
async SelectAreaAsync(params, invocation) {
try {
await this._senderChecker.checkInvocation(invocation);
} catch (e) {
invocation.return_gerror(e);
return;
}
let selectArea = new SelectArea();
try {
let areaRectangle = await selectArea.selectAsync();
let retRectangle = this._unscaleArea(
areaRectangle.x, areaRectangle.y,
areaRectangle.width, areaRectangle.height);
invocation.return_value(GLib.Variant.new('(iiii)', retRectangle));
} catch (e) {
invocation.return_error_literal(
Gio.IOErrorEnum, Gio.IOErrorEnum.CANCELLED,
'Operation was cancelled');
}
}
async FlashAreaAsync(params, invocation) {
try {
await this._senderChecker.checkInvocation(invocation);
} catch (e) {
invocation.return_gerror(e);
return;
}
let [x, y, width, height] = params;
[x, y, width, height] = this._scaleArea(x, y, width, height);
if (!this._checkArea(x, y, width, height)) {
invocation.return_error_literal(Gio.IOErrorEnum,
Gio.IOErrorEnum.CANCELLED,
"Invalid params");
return;
}
let flashspot = new Flashspot({ x, y, width, height });
flashspot.fire();
invocation.return_value(null);
}
async PickColorAsync(params, invocation) {
const screenshot = await this._createScreenshot(invocation, false, false);
if (!screenshot)
return;
const pickPixel = new PickPixel(screenshot);
try {
const color = await pickPixel.pickAsync();
const { red, green, blue } = color;
const retval = GLib.Variant.new('(a{sv})', [{
color: GLib.Variant.new('(ddd)', [
red / 255.0,
green / 255.0,
blue / 255.0,
]),
}]);
invocation.return_value(retval);
} catch (e) {
invocation.return_error_literal(
Gio.IOErrorEnum, Gio.IOErrorEnum.CANCELLED,
'Operation was cancelled');
} finally {
this._removeShooterForSender(invocation.get_sender());
}
}
};
var SelectArea = GObject.registerClass(
class SelectArea extends St.Widget {
_init() {
this._startX = -1;
this._startY = -1;
this._lastX = 0;
this._lastY = 0;
this._result = null;
super._init({
visible: false,
reactive: true,
x: 0,
y: 0,
});
Main.uiGroup.add_actor(this);
this._grabHelper = new GrabHelper.GrabHelper(this);
let constraint = new Clutter.BindConstraint({ source: global.stage,
coordinate: Clutter.BindCoordinate.ALL });
this.add_constraint(constraint);
this._rubberband = new St.Widget({
style_class: 'select-area-rubberband',
visible: false,
});
this.add_actor(this._rubberband);
}
async selectAsync() {
global.display.set_cursor(Meta.Cursor.CROSSHAIR);
Main.uiGroup.set_child_above_sibling(this, null);
this.show();
try {
await this._grabHelper.grabAsync({ actor: this });
} finally {
global.display.set_cursor(Meta.Cursor.DEFAULT);
GLib.idle_add(GLib.PRIORITY_DEFAULT, () => {
this.destroy();
return GLib.SOURCE_REMOVE;
});
}
return this._result;
}
_getGeometry() {
return new Meta.Rectangle({
x: Math.min(this._startX, this._lastX),
y: Math.min(this._startY, this._lastY),
width: Math.abs(this._startX - this._lastX) + 1,
height: Math.abs(this._startY - this._lastY) + 1,
});
}
vfunc_motion_event(motionEvent) {
if (this._startX == -1 || this._startY == -1 || this._result)
return Clutter.EVENT_PROPAGATE;
[this._lastX, this._lastY] = [motionEvent.x, motionEvent.y];
this._lastX = Math.floor(this._lastX);
this._lastY = Math.floor(this._lastY);
let geometry = this._getGeometry();
this._rubberband.set_position(geometry.x, geometry.y);
this._rubberband.set_size(geometry.width, geometry.height);
this._rubberband.show();
return Clutter.EVENT_PROPAGATE;
}
vfunc_button_press_event(buttonEvent) {
if (this._result)
return Clutter.EVENT_PROPAGATE;
[this._startX, this._startY] = [buttonEvent.x, buttonEvent.y];
this._startX = Math.floor(this._startX);
this._startY = Math.floor(this._startY);
this._rubberband.set_position(this._startX, this._startY);
return Clutter.EVENT_PROPAGATE;
}
vfunc_button_release_event() {
if (this._startX === -1 || this._startY === -1 || this._result)
return Clutter.EVENT_PROPAGATE;
this._result = this._getGeometry();
this.ease({
opacity: 0,
duration: 200,
mode: Clutter.AnimationMode.EASE_OUT_QUAD,
onComplete: () => this._grabHelper.ungrab(),
});
return Clutter.EVENT_PROPAGATE;
}
});
var RecolorEffect = GObject.registerClass({
Properties: {
color: GObject.ParamSpec.boxed(
'color', 'color', 'replacement color',
GObject.ParamFlags.WRITABLE,
Clutter.Color.$gtype),
chroma: GObject.ParamSpec.boxed(
'chroma', 'chroma', 'color to replace',
GObject.ParamFlags.WRITABLE,
Clutter.Color.$gtype),
threshold: GObject.ParamSpec.float(
'threshold', 'threshold', 'threshold',
GObject.ParamFlags.WRITABLE,
0.0, 1.0, 0.0),
smoothing: GObject.ParamSpec.float(
'smoothing', 'smoothing', 'smoothing',
GObject.ParamFlags.WRITABLE,
0.0, 1.0, 0.0),
},
}, class RecolorEffect extends Shell.GLSLEffect {
_init(params) {
this._color = new Clutter.Color();
this._chroma = new Clutter.Color();
this._threshold = 0;
this._smoothing = 0;
this._colorLocation = null;
this._chromaLocation = null;
this._thresholdLocation = null;
this._smoothingLocation = null;
super._init(params);
this._colorLocation = this.get_uniform_location('recolor_color');
this._chromaLocation = this.get_uniform_location('chroma_color');
this._thresholdLocation = this.get_uniform_location('threshold');
this._smoothingLocation = this.get_uniform_location('smoothing');
this._updateColorUniform(this._colorLocation, this._color);
this._updateColorUniform(this._chromaLocation, this._chroma);
this._updateFloatUniform(this._thresholdLocation, this._threshold);
this._updateFloatUniform(this._smoothingLocation, this._smoothing);
}
_updateColorUniform(location, color) {
if (!location)
return;
this.set_uniform_float(location,
3, [color.red / 255, color.green / 255, color.blue / 255]);
this.queue_repaint();
}
_updateFloatUniform(location, value) {
if (!location)
return;
this.set_uniform_float(location, 1, [value]);
this.queue_repaint();
}
set color(c) {
if (this._color.equal(c))
return;
this._color = c;
this.notify('color');
this._updateColorUniform(this._colorLocation, this._color);
}
set chroma(c) {
if (this._chroma.equal(c))
return;
this._chroma = c;
this.notify('chroma');
this._updateColorUniform(this._chromaLocation, this._chroma);
}
set threshold(value) {
if (this._threshold === value)
return;
this._threshold = value;
this.notify('threshold');
this._updateFloatUniform(this._thresholdLocation, this._threshold);
}
set smoothing(value) {
if (this._smoothing === value)
return;
this._smoothing = value;
this.notify('smoothing');
this._updateFloatUniform(this._smoothingLocation, this._smoothing);
}
vfunc_build_pipeline() {
// Conversion parameters from https://en.wikipedia.org/wiki/YCbCr
const decl = `
vec3 rgb2yCrCb(vec3 c) { \n
float y = 0.299 * c.r + 0.587 * c.g + 0.114 * c.b; \n
float cr = 0.7133 * (c.r - y); \n
float cb = 0.5643 * (c.b - y); \n
return vec3(y, cr, cb); \n
} \n
\n
uniform vec3 chroma_color; \n
uniform vec3 recolor_color; \n
uniform float threshold; \n
uniform float smoothing; \n`;
const src = `
vec3 mask = rgb2yCrCb(chroma_color.rgb); \n
vec3 yCrCb = rgb2yCrCb(cogl_color_out.rgb); \n
float blend = \n
smoothstep(threshold, \n
threshold + smoothing, \n
distance(yCrCb.gb, mask.gb)); \n
cogl_color_out.rgb = \n
mix(recolor_color, cogl_color_out.rgb, blend); \n`;
this.add_glsl_snippet(Shell.SnippetHook.FRAGMENT, decl, src, false);
}
});
var PickPixel = GObject.registerClass(
class PickPixel extends St.Widget {
_init(screenshot) {
super._init({ visible: false, reactive: true });
this._screenshot = screenshot;
this._result = null;
this._color = null;
this._inPick = false;
Main.uiGroup.add_actor(this);
this._grabHelper = new GrabHelper.GrabHelper(this);
let constraint = new Clutter.BindConstraint({ source: global.stage,
coordinate: Clutter.BindCoordinate.ALL });
this.add_constraint(constraint);
const action = new Clutter.ClickAction();
action.connect('clicked', async () => {
await this._pickColor(...action.get_coords());
this._result = this._color;
this._grabHelper.ungrab();
});
this.add_action(action);
this._recolorEffect = new RecolorEffect({
chroma: new Clutter.Color({
red: 80,
green: 219,
blue: 181,
}),
threshold: 0.04,
smoothing: 0.07,
});
this._previewCursor = new St.Icon({
icon_name: 'color-pick',
icon_size: Meta.prefs_get_cursor_size(),
effect: this._recolorEffect,
visible: false,
});
Main.uiGroup.add_actor(this._previewCursor);
}
async pickAsync() {
global.display.set_cursor(Meta.Cursor.BLANK);
Main.uiGroup.set_child_above_sibling(this, null);
this.show();
this._pickColor(...global.get_pointer());
try {
await this._grabHelper.grabAsync({ actor: this });
} finally {
global.display.set_cursor(Meta.Cursor.DEFAULT);
this._previewCursor.destroy();
GLib.idle_add(GLib.PRIORITY_DEFAULT, () => {
this.destroy();
return GLib.SOURCE_REMOVE;
});
}
return this._result;
}
async _pickColor(x, y) {
if (this._inPick)
return;
this._inPick = true;
this._previewCursor.set_position(x, y);
[this._color] = await this._screenshot.pick_color(x, y);
this._inPick = false;
if (!this._color)
return;
this._recolorEffect.color = this._color;
this._previewCursor.show();
}
vfunc_motion_event(motionEvent) {
const { x, y } = motionEvent;
this._pickColor(x, y);
return Clutter.EVENT_PROPAGATE;
}
});
var FLASHSPOT_ANIMATION_OUT_TIME = 500; // milliseconds
var Flashspot = GObject.registerClass(
class Flashspot extends Lightbox.Lightbox {
_init(area) {
super._init(Main.uiGroup, {
inhibitEvents: true,
width: area.width,
height: area.height,
});
this.style_class = 'flashspot';
this.set_position(area.x, area.y);
}
fire(doneCallback) {
this.set({ visible: true, opacity: 255 });
this.ease({
opacity: 0,
duration: FLASHSPOT_ANIMATION_OUT_TIME,
mode: Clutter.AnimationMode.EASE_OUT_QUAD,
onComplete: () => {
if (doneCallback)
doneCallback();
this.destroy();
},
});
}
});