Adding upstream version 3.38.6.upstream/3.38.6upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 631 insertions, 0 deletions

diff --git a/js/ui/screenshot.js b/js/ui/screenshot.js
new file mode 100644
index 0000000..787e60f
--- /dev/null
+++ b/js/ui/screenshot.js
@@ -0,0 +1,631 @@
+// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
+/* exported ScreenshotService */
+
+const { Clutter, Gio, GObject, GLib, Meta, Shell, St } = imports.gi;
+
+const GrabHelper = imports.ui.grabHelper;
+const Lightbox = imports.ui.lightbox;
+const Main = imports.ui.main;
+
+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');
+
+const { loadInterfaceXML } = imports.misc.fileUtils;
+
+const ScreenshotIface = loadInterfaceXML('org.gnome.Shell.Screenshot');
+
+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._lockdownSettings = new Gio.Settings({ schema_id: 'org.gnome.desktop.lockdown' });
+
+        Gio.DBus.session.own_name('org.gnome.Shell.Screenshot', Gio.BusNameOwnerFlags.REPLACE, null, null);
+    }
+
+    _createScreenshot(invocation, needsDisk = 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) || lockedDown) {
+            invocation.return_error_literal(
+                Gio.IOErrorEnum, Gio.IOErrorEnum.BUSY,
+                'There is an ongoing operation for this sender');
+            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$/, '');
+
+        let path = [
+            GLib.get_user_special_dir(GLib.UserDirectory.DIRECTORY_PICTURES),
+            GLib.get_home_dir(),
+        ].find(p => GLib.file_test(p, GLib.FileTest.EXISTS));
+
+        if (!path)
+            return null;
+
+        yield Gio.File.new_for_path(
+            GLib.build_filenamev([path, `${filename}.png`]));
+
+        for (let idx = 1; ; idx++) {
+            yield Gio.File.new_for_path(
+                GLib.build_filenamev([path, `${filename}-${idx}.png`]));
+        }
+    }
+
+    _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_value(GLib.Variant.new('(bs)', [false, '']));
+                return [null, null];
+            }
+        }
+
+        for (let file of this._resolveRelativeFilename(filename)) {
+            try {
+                let stream = file.create(Gio.FileCreateFlags.NONE, null);
+                return [stream, file];
+            } catch (e) {
+                if (!e.matches(Gio.IOErrorEnum, Gio.IOErrorEnum.EXISTS))
+                    break;
+            }
+        }
+
+        invocation.return_value(GLib.Variant.new('(bs)', [false, '']));
+        return [null, null];
+    }
+
+    _onScreenshotComplete(area, stream, file, flash, invocation) {
+        if (flash) {
+            let flashspot = new Flashspot(area);
+            flashspot.fire(() => {
+                this._removeShooterForSender(invocation.get_sender());
+            });
+        } else {
+            this._removeShooterForSender(invocation.get_sender());
+        }
+
+        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 = this._createScreenshot(invocation);
+        if (!screenshot)
+            return;
+
+        let [stream, file] = this._createStream(filename, invocation);
+        if (!stream)
+            return;
+
+        try {
+            let [area] =
+                await screenshot.screenshot_area(x, y, width, height, stream);
+            this._onScreenshotComplete(area, stream, file, flash, invocation);
+        } catch (e) {
+            this._removeShooterForSender(invocation.get_sender());
+            invocation.return_value(new GLib.Variant('(bs)', [false, '']));
+        }
+    }
+
+    async ScreenshotWindowAsync(params, invocation) {
+        let [includeFrame, includeCursor, flash, filename] = params;
+        let screenshot = this._createScreenshot(invocation);
+        if (!screenshot)
+            return;
+
+        let [stream, file] = this._createStream(filename, invocation);
+        if (!stream)
+            return;
+
+        try {
+            let [area] =
+                await screenshot.screenshot_window(includeFrame, includeCursor, stream);
+            this._onScreenshotComplete(area, stream, file, flash, invocation);
+        } catch (e) {
+            this._removeShooterForSender(invocation.get_sender());
+            invocation.return_value(new GLib.Variant('(bs)', [false, '']));
+        }
+    }
+
+    async ScreenshotAsync(params, invocation) {
+        let [includeCursor, flash, filename] = params;
+        let screenshot = this._createScreenshot(invocation);
+        if (!screenshot)
+            return;
+
+        let [stream, file] = this._createStream(filename, invocation);
+        if (!stream)
+            return;
+
+        try {
+            let [area] = await screenshot.screenshot(includeCursor, stream);
+            this._onScreenshotComplete(area, stream, file, flash, invocation);
+        } catch (e) {
+            this._removeShooterForSender(invocation.get_sender());
+            invocation.return_value(new GLib.Variant('(bs)', [false, '']));
+        }
+    }
+
+    async SelectAreaAsync(params, invocation) {
+        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');
+        }
+    }
+
+    FlashAreaAsync(params, invocation) {
+        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 = this._createScreenshot(invocation, 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) {
+        [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() {
+        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();
+            },
+        });
+    }
+});