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Mini Shell
Mini Shell
/* DING: Desktop Icons New Generation for GNOME Shell
*
* Copyright (C) 2019 Sergio Costas (rastersoft@gmail.com)
* Based on code original (C) Carlos Soriano
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 3 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/* exported DesktopGrid */
'use strict';
const Gtk = imports.gi.Gtk;
const Gdk = imports.gi.Gdk;
const Prefs = imports.preferences;
const Enums = imports.enums;
const DesktopIconsUtil = imports.desktopIconsUtil;
const Gettext = imports.gettext.domain('ding');
const _ = Gettext.gettext;
var elementSpacing = 2;
var DesktopGrid = class {
_connectSignal(object, signal, callback) {
this._signalIds.push([object, object.connect(signal, callback)]);
}
constructor(desktopManager, desktopName, desktopDescription, asDesktop, premultiplied) {
this._signalIds = [];
this._destroying = false;
this._desktopManager = desktopManager;
this._desktopName = desktopName;
this._premultiplied = premultiplied;
this._asDesktop = asDesktop;
this._desktopDescription = desktopDescription;
this.updateWindowGeometry();
this.updateUnscaledHeightWidthMargins();
this.createGrids();
this._window = new Gtk.ApplicationWindow({application: desktopManager.mainApp, 'title': desktopName});
this._accessibility = this._window.get_accessible();
this._accessibility.set_name(_(`Desktop icons`));
this._windowContext = this._window.get_style_context();
if (this._asDesktop) {
this._window.set_decorated(false);
this._window.set_deletable(false);
// For Wayland Transparent background, but only if this instance is working as desktop
this._windowContext.add_class('desktopwindow');
// If we are under X11, Transparent background and everything else from here as well
if (this._desktopManager.using_X11) {
let screen = this._window.get_screen();
let visual = screen.get_rgba_visual();
if (visual && screen.is_composited()) {
this._window.set_visual(visual);
} else {
print('Unable to set Transparency under X11!');
}
this._window.set_type_hint(Gdk.WindowTypeHint.DESKTOP);
this._window.stick();
this._window.move(this._x / this._size_divisor, this._y / this._size_divisor);
} else { // Wayland
this._window.maximize();
}
} else {
// Opaque black test window
this._windowContext.add_class('testwindow');
}
this._window.set_resizable(false);
this._connectSignal(this._window, 'delete-event', () => {
if (this._destroying) {
return false;
}
if (this._asDesktop) {
// Do not destroy window when closing if the instance is working as desktop
return true;
} else {
// Exit if this instance is working as an stand-alone window
return false;
}
});
this._eventBox = new Gtk.EventBox({visible: true});
this.sizeEventBox();
this._window.add(this._eventBox);
this._container = new Gtk.Fixed();
this._eventBox.add(this._container);
this.gridGlobalRectangle = new Gdk.Rectangle();
this.setDropDestination(this._eventBox);
this._selectedList = null;
this._connectSignal(this._container, 'draw', (widget, cr) => {
this._doDrawRubberBand(cr);
cr.$dispose();
});
this.setGridStatus();
this._window.show_all();
this._window.set_size_request(this._windowWidth, this._windowHeight);
this._window.resize(this._windowWidth, this._windowHeight);
this._eventBox.add_events(Gdk.EventMask.BUTTON_MOTION_MASK |
Gdk.EventMask.BUTTON_PRESS_MASK |
Gdk.EventMask.BUTTON_RELEASE_MASK |
Gdk.EventMask.KEY_RELEASE_MASK);
this._connectSignal(this._eventBox, 'button-press-event', (actor, event) => {
let [a, x, y] = event.get_coords();
[x, y] = this.coordinatesLocalToGlobal(x, y);
this._desktopManager.onPressButton(x, y, event, this);
return false;
});
this._connectSignal(this._eventBox, 'motion-notify-event', (actor, event) => {
let [a, x, y] = event.get_coords();
[x, y] = this.coordinatesLocalToGlobal(x, y);
this._desktopManager.onMotion(x, y);
});
this._connectSignal(this._eventBox, 'button-release-event', (actor, event) => {
this._desktopManager.onReleaseButton(this);
});
this._connectSignal(this._window, 'key-press-event', (actor, event) => {
this._desktopManager.onKeyPress(event, this);
});
// key-release-event must be used for the arrow keys to avoid conflicts
// with assistive technologies.
this._connectSignal(this._window, 'key-release-event', (actor, event) => {
this._desktopManager.onKeyRelease(event, this);
});
this.updateGridRectangle();
}
updateGridDescription(desktopDescription) {
this._desktopDescription = desktopDescription;
}
updateWindowGeometry() {
this._zoom = this._desktopDescription.zoom;
this._x = this._desktopDescription.x;
this._y = this._desktopDescription.y;
this._monitor = this._desktopDescription.monitorIndex;
this._size_divisor = this._zoom;
if (this._asDesktop) {
if (this._desktopManager.using_X11) {
this._size_divisor = Math.ceil(this._zoom);
} else if (this._premultiplied) {
this._size_divisor = 1;
}
}
this._windowWidth = Math.floor(this._desktopDescription.width / this._size_divisor);
this._windowHeight = Math.floor(this._desktopDescription.height / this._size_divisor);
}
resizeWindow() {
this.updateWindowGeometry();
this._desktopName = `@!${this._x},${this._y};BDHF`;
if (this._desktopManager.using_X11) {
this._window.move(this._x / this._size_divisor, this._y / this._size_divisor);
}
this._window.set_title(this._desktopName);
this._window.set_size_request(this._windowWidth, this._windowHeight);
this._window.resize(this._windowWidth, this._windowHeight);
}
updateUnscaledHeightWidthMargins() {
this._marginTop = this._desktopDescription.marginTop;
this._marginBottom = this._desktopDescription.marginBottom;
this._marginLeft = this._desktopDescription.marginLeft;
this._marginRight = this._desktopDescription.marginRight;
this._width = this._desktopDescription.width - this._marginLeft - this._marginRight;
this._height = this._desktopDescription.height - this._marginTop - this._marginBottom;
}
createGrids() {
this._width = Math.floor(this._width / this._size_divisor);
this._height = Math.floor(this._height / this._size_divisor);
this._marginTop = Math.floor(this._marginTop / this._size_divisor);
this._marginBottom = Math.floor(this._marginBottom / this._size_divisor);
this._marginLeft = Math.floor(this._marginLeft / this._size_divisor);
this._marginRight = Math.floor(this._marginRight / this._size_divisor);
this._maxColumns = Math.floor(this._width / (Prefs.get_desired_width() + 4 * elementSpacing));
this._maxRows = Math.floor(this._height / (Prefs.get_desired_height() + 4 * elementSpacing));
this._elementWidth = Math.floor(this._width / this._maxColumns);
this._elementHeight = Math.floor(this._height / this._maxRows);
}
updateGridRectangle() {
this.gridGlobalRectangle.x = this._x + this._marginLeft;
this.gridGlobalRectangle.y = this._y + this._marginTop;
this.gridGlobalRectangle.width = this._width;
this.gridGlobalRectangle.height = this._height;
}
sizeEventBox() {
this._eventBox.margin_top = this._marginTop;
this._eventBox.margin_bottom = this._marginBottom;
this._eventBox.margin_start = this._marginLeft;
this._eventBox.margin_end = this._marginRight;
}
setGridStatus() {
this._fileItems = {};
this._gridStatus = {};
for (let y = 0; y < this._maxRows; y++) {
for (let x = 0; x < this._maxColumns; x++) {
this._setGridUse(x, y, false);
}
}
}
resizeGrid() {
this.updateUnscaledHeightWidthMargins();
this.createGrids();
this.updateGridRectangle();
this.sizeEventBox();
this.setGridStatus();
}
destroy() {
this._destroying = true;
/* Disconnect signals */
for (let [object, signalId] of this._signalIds) {
object.disconnect(signalId);
}
this._signalIds = [];
this._window.destroy();
}
setDropDestination(dropDestination) {
dropDestination.drag_dest_set(Gtk.DestDefaults.MOTION | Gtk.DestDefaults.DROP, null, Gdk.DragAction.MOVE | Gdk.DragAction.COPY | Gdk.DragAction.DEFAULT);
let targets = new Gtk.TargetList(null);
targets.add(Gdk.atom_intern('x-special/ding-icon-list', false), Gtk.TargetFlags.SAME_APP,
Enums.DndTargetInfo.DING_ICON_LIST);
targets.add(Gdk.atom_intern('x-special/gnome-icon-list', false), 0,
Enums.DndTargetInfo.GNOME_ICON_LIST);
targets.add(Gdk.atom_intern('text/uri-list', false), 0,
Enums.DndTargetInfo.URI_LIST);
targets.add(Gdk.atom_intern('text/plain', false), 0,
Enums.DndTargetInfo.TEXT_PLAIN);
dropDestination.drag_dest_set_target_list(targets);
targets = undefined; // to avoid memory leaks
this._connectSignal(dropDestination, 'drag-motion', (widget, context, x, y, time) => {
this.receiveMotion(x, y);
if (DesktopIconsUtil.getModifiersInDnD(context, Gdk.ModifierType.CONTROL_MASK)) {
Gdk.drag_status(context, Gdk.DragAction.COPY, time);
} else {
Gdk.drag_status(context, Gdk.DragAction.MOVE, time);
}
});
this._connectSignal(this._eventBox, 'drag-leave', (widget, context, time) => {
this.receiveLeave();
});
this._connectSignal(dropDestination, 'drag-data-received', (widget, context, x, y, selection, info, time) => {
const forceCopy = context.get_selected_action() === Gdk.DragAction.COPY;
this.receiveDrop(context, x, y, selection, info, false, forceCopy);
});
}
receiveLeave() {
this._desktopManager.onDragLeave();
}
receiveMotion(x, y, global) {
if (!global) {
x = this._elementWidth * Math.floor(x / this._elementWidth);
y = this._elementHeight * Math.floor(y / this._elementHeight);
[x, y] = this.coordinatesLocalToGlobal(x, y);
}
this._desktopManager.onDragMotion(x, y);
}
receiveDrop(context, x, y, selection, info, forceLocal, forceCopy) {
if (!forceLocal) {
x = this._elementWidth * Math.floor(x / this._elementWidth);
y = this._elementHeight * Math.floor(y / this._elementHeight);
[x, y] = this.coordinatesLocalToGlobal(x, y);
}
this._desktopManager.onDragDataReceived(context, x, y, selection, info, forceLocal, forceCopy);
this._window.queue_draw();
}
highLightGridAt(x, y) {
let selected = this.getGridAt(x, y, false);
this._selectedList = [selected];
this._window.queue_draw();
}
unHighLightGrids() {
this._selectedList = null;
this._window.queue_draw();
}
_getGridCoordinates(x, y) {
let placeX = Math.floor(x / this._elementWidth);
let placeY = Math.floor(y / this._elementHeight);
placeX = DesktopIconsUtil.clamp(placeX, 0, this._maxColumns - 1);
placeY = DesktopIconsUtil.clamp(placeY, 0, this._maxRows - 1);
return [placeX, placeY];
}
gridInUse(x, y) {
let [placeX, placeY] = this._getGridCoordinates(x, y);
return !this._isEmptyAt(placeX, placeY);
}
getGridLocalCoordinates(x, y) {
let [column, row] = this._getGridCoordinates(x, y);
let localX = Math.floor(this._width * column / this._maxColumns);
let localY = Math.floor(this._height * row / this._maxRows);
return [localX, localY];
}
_fileAt(x, y) {
let [placeX, placeY] = this._getGridCoordinates(x, y);
return this._gridStatus[placeY * this._maxColumns + placeX];
}
refreshDrag(selectedList, ox, oy) {
if (selectedList === null) {
this._selectedList = null;
this._window.queue_draw();
return;
}
let newSelectedList = [];
for (let [x, y] of selectedList) {
x += this._elementWidth / 2;
y += this._elementHeight / 2;
x += ox;
y += oy;
let r = this.getGridAt(x, y);
if (r && !isNaN(r[0]) && !isNaN(r[1]) && (!this.gridInUse(r[0], r[1]) || this._fileAt(r[0], r[1]).isSelected)) {
newSelectedList.push(r);
}
}
if (newSelectedList.length == 0) {
if (this._selectedList !== null) {
this._selectedList = null;
this._window.queue_draw();
}
return;
}
if (this._selectedList !== null) {
if ((newSelectedList[0][0] == this._selectedList[0][0]) && (newSelectedList[0][1] == this._selectedList[0][1])) {
return;
}
}
this._selectedList = newSelectedList;
this._window.queue_draw();
}
queue_draw() {
this._window.queue_draw();
}
_doDrawRubberBand(cr) {
if (this._desktopManager.rubberBand && this._desktopManager.selectionRectangle) {
if (!this.gridGlobalRectangle.intersect(this._desktopManager.selectionRectangle)[0]) {
return;
}
let [xInit, yInit] = this.coordinatesGlobalToLocal(this._desktopManager.x1, this._desktopManager.y1);
let [xFin, yFin] = this.coordinatesGlobalToLocal(this._desktopManager.x2, this._desktopManager.y2);
cr.rectangle(xInit + 0.5, yInit + 0.5, xFin - xInit, yFin - yInit);
Gdk.cairo_set_source_rgba(cr, new Gdk.RGBA({
red: this._desktopManager.selectColor.red,
green: this._desktopManager.selectColor.green,
blue: this._desktopManager.selectColor.blue,
alpha: 0.6,
})
);
cr.fill();
cr.setLineWidth(1);
cr.rectangle(xInit + 0.5, yInit + 0.5, xFin - xInit, yFin - yInit);
Gdk.cairo_set_source_rgba(cr, new Gdk.RGBA({
red: this._desktopManager.selectColor.red,
green: this._desktopManager.selectColor.green,
blue: this._desktopManager.selectColor.blue,
alpha: 1.0,
})
);
cr.stroke();
}
if (this._desktopManager.showDropPlace && (this._selectedList !== null)) {
for (let [x, y] of this._selectedList) {
cr.rectangle(x + 0.5, y + 0.5, this._elementWidth, this._elementHeight);
Gdk.cairo_set_source_rgba(cr, new Gdk.RGBA({
red: 1.0 - this._desktopManager.selectColor.red,
green: 1.0 - this._desktopManager.selectColor.green,
blue: 1.0 - this._desktopManager.selectColor.blue,
alpha: 0.4,
})
);
cr.fill();
cr.setLineWidth(0.5);
cr.rectangle(x + 0.5, y + 0.5, this._elementWidth, this._elementHeight);
Gdk.cairo_set_source_rgba(cr, new Gdk.RGBA({
red: 1.0 - this._desktopManager.selectColor.red,
green: 1.0 - this._desktopManager.selectColor.green,
blue: 1.0 - this._desktopManager.selectColor.blue,
alpha: 1.0,
})
);
cr.stroke();
}
}
}
getDistance(x, y) {
/**
* Checks if these coordinates belong to this grid.
*
* @returns -1 if there is no free space for new icons;
* 0 if the coordinates are inside this grid;
* or the distance to the middle point, if none of the previous
*/
let isFree = false;
for (let element in this._gridStatus) {
if (!this._gridStatus[element]) {
isFree = true;
break;
}
}
if (!isFree) {
return -1;
}
if (this._coordinatesBelongToThisGrid(x, y)) {
return 0;
}
return Math.pow(x - (this._x + this._windowWidth * this._zoom / 2), 2) + Math.pow(x - (this._y + this._windowHeight * this._zoom / 2), 2);
}
coordinatesGlobalToLocal(X, Y, widget = null) {
X -= this._x;
Y -= this._y;
if (!widget) {
widget = this._eventBox;
}
let [belong, x, y] = this._window.translate_coordinates(widget, X, Y);
return [x, y];
}
coordinatesLocalToGlobal(x, y, widget = null) {
if (!widget) {
widget = this._eventBox;
}
let [belongs, X, Y] = widget.translate_coordinates(this._window, x, y);
return [X + this._x, Y + this._y];
}
_addFileItemTo(fileItem, column, row, coordinatesAction) {
if (this._destroying) {
return;
}
let localX = Math.floor(this._width * column / this._maxColumns);
let localY = Math.floor(this._height * row / this._maxRows);
this._container.put(fileItem.container, localX + elementSpacing, localY + elementSpacing);
this._setGridUse(column, row, fileItem);
this._fileItems[fileItem.uri] = [column, row, fileItem];
let [x, y] = this.coordinatesLocalToGlobal(localX + elementSpacing, localY + elementSpacing);
fileItem.setCoordinates(x,
y,
this._elementWidth - 2 * elementSpacing,
this._elementHeight - 2 * elementSpacing,
elementSpacing,
this);
/* If this file is new in the Desktop and hasn't yet
* fixed coordinates, store the new possition to ensure
* that the next time it will be shown in the same possition.
* Also store the new possition if it has been moved by the user,
* and not triggered by a screen change.
*/
if ((fileItem.savedCoordinates == null) || (coordinatesAction == Enums.StoredCoordinates.OVERWRITE)) {
fileItem.savedCoordinates = [x, y];
}
}
removeItem(fileItem) {
if (fileItem.uri in this._fileItems) {
let [column, row, tmp] = this._fileItems[fileItem.uri];
this._setGridUse(column, row, false);
this._container.remove(fileItem.container);
delete this._fileItems[fileItem.uri];
}
}
addFileItemCloseTo(fileItem, x, y, coordinatesAction) {
let addVolumesOpposite = Prefs.desktopSettings.get_boolean('add-volumes-opposite');
let [column, row] = this._getEmptyPlaceClosestTo(x,
y,
coordinatesAction,
fileItem.isDrive && addVolumesOpposite);
this._addFileItemTo(fileItem, column, row, coordinatesAction);
}
_isEmptyAt(x, y) {
return this._gridStatus[y * this._maxColumns + x] === false;
}
_setGridUse(x, y, inUse) {
this._gridStatus[y * this._maxColumns + x] = inUse;
}
getGridAt(x, y, globalCoordinates = false) {
if (this._coordinatesBelongToThisGrid(x, y)) {
[x, y] = this.coordinatesGlobalToLocal(x, y);
if (globalCoordinates) {
x = this._elementWidth * Math.floor((x / this._elementWidth) + 0.5);
y = this._elementHeight * Math.floor((y / this._elementHeight) + 0.5);
[x, y] = this.coordinatesLocalToGlobal(x, y);
return [x, y];
} else {
return this.getGridLocalCoordinates(x, y);
}
} else {
return null;
}
}
_coordinatesBelongToThisGrid(X, Y) {
let checkRectangle = new Gdk.Rectangle({x: X, y: Y, width: 1, height: 1});
return this.gridGlobalRectangle.intersect(checkRectangle)[0];
}
_getEmptyPlaceClosestTo(x, y, coordinatesAction, reverseHorizontal) {
[x, y] = this.coordinatesGlobalToLocal(x, y);
let placeX = Math.floor(x / this._elementWidth);
let placeY = Math.floor(y / this._elementHeight);
let cornerInversion = Prefs.get_start_corner();
if (reverseHorizontal) {
cornerInversion[0] = !cornerInversion[0];
}
placeX = DesktopIconsUtil.clamp(placeX, 0, this._maxColumns - 1);
placeY = DesktopIconsUtil.clamp(placeY, 0, this._maxRows - 1);
if (this._isEmptyAt(placeX, placeY) && (coordinatesAction != Enums.StoredCoordinates.ASSIGN)) {
return [placeX, placeY];
}
let found = false;
let resColumn = null;
let resRow = null;
let minDistance = Infinity;
let column, row;
for (let tmpColumn = 0; tmpColumn < this._maxColumns; tmpColumn++) {
if (cornerInversion[0]) {
column = this._maxColumns - tmpColumn - 1;
} else {
column = tmpColumn;
}
for (let tmpRow = 0; tmpRow < this._maxRows; tmpRow++) {
if (cornerInversion[1]) {
row = this._maxRows - tmpRow - 1;
} else {
row = tmpRow;
}
if (!this._isEmptyAt(column, row)) {
continue;
}
let proposedX = column * this._elementWidth;
let proposedY = row * this._elementHeight;
if (coordinatesAction == Enums.StoredCoordinates.ASSIGN) {
return [column, row];
}
let distance = DesktopIconsUtil.distanceBetweenPoints(proposedX, proposedY, x, y);
if (distance < minDistance) {
found = true;
minDistance = distance;
resColumn = column;
resRow = row;
}
}
}
if (!found) {
throw new Error('Not enough place at monitor');
}
return [resColumn, resRow];
}
};
Zerion Mini Shell 1.0