gnome-shell/js/ui/overlay.js
Marina Zhurakhinskaya e9826ecb45 Add a 'More' control to the applications display in the overlay
mode. When this control is clicked, documents display section slides down,
workspaces display slides to the side, and a multi-column applications view is
presented to the user. "More' control is replaced with a 'Less' control. When
the 'Less' control is clicked a default overlay view is restored.

Clean up positioning of the components of the overlay sideshow
and the items within generic item displays.


svn path=/trunk/; revision=179
2009-02-03 22:58:33 +00:00

481 lines
20 KiB
JavaScript

/* -*- mode: js2; js2-basic-offset: 4; indent-tabs-mode: nil -*- */
const Big = imports.gi.Big;
const Clutter = imports.gi.Clutter;
const Gio = imports.gi.Gio;
const Gtk = imports.gi.Gtk;
const Mainloop = imports.mainloop;
const Shell = imports.gi.Shell;
const Signals = imports.signals;
const Tweener = imports.tweener.tweener;
const AppDisplay = imports.ui.appDisplay;
const DocDisplay = imports.ui.docDisplay;
const GenericDisplay = imports.ui.genericDisplay;
const Main = imports.ui.main;
const Panel = imports.ui.panel;
const Workspaces = imports.ui.workspaces;
const OVERLAY_BACKGROUND_COLOR = new Clutter.Color();
OVERLAY_BACKGROUND_COLOR.from_pixel(0x000000ff);
const LABEL_HEIGHT = 16;
const SIDESHOW_PAD = 6;
const SIDESHOW_PAD_BOTTOM = 40;
const SIDESHOW_MIN_WIDTH = 250;
const SIDESHOW_SECTION_MARGIN = 10;
const SIDESHOW_SECTION_LABEL_MARGIN_BOTTOM = 6;
const SIDESHOW_SEARCH_BG_COLOR = new Clutter.Color();
SIDESHOW_SEARCH_BG_COLOR.from_pixel(0xffffffff);
const SIDESHOW_TEXT_COLOR = new Clutter.Color();
SIDESHOW_TEXT_COLOR.from_pixel(0xffffffff);
// Time for initial animation going into overlay mode
const ANIMATION_TIME = 0.5;
// How much of the screen the workspace grid takes up
const WORKSPACE_GRID_SCALE = 0.75;
// How much of the screen the workspace grid takes up when it is moved aside to provide space
// for an expanded 'More' view
const WORKSPACE_GRID_ASIDE_SCALE = 0.1;
// Padding around workspace grid / Spacing between Sideshow and Workspaces
const WORKSPACE_GRID_PADDING = 10;
function Sideshow(parent, width) {
this._init(parent, width);
}
Sideshow.prototype = {
_init : function(parent, width) {
let me = this;
this._moreMode = false;
this._width = width;
let global = Shell.Global.get();
this.actor = new Clutter.Group();
parent.add_actor(this.actor);
let icontheme = Gtk.IconTheme.get_default();
let rect = new Big.Box({ background_color: SIDESHOW_SEARCH_BG_COLOR,
corner_radius: 4,
x: SIDESHOW_PAD,
y: Panel.PANEL_HEIGHT + SIDESHOW_PAD,
width: width,
height: 24});
this.actor.add_actor(rect);
let searchIconTexture = new Clutter.Texture({ x: SIDESHOW_PAD + 2,
y: rect.y + 2 });
let searchIconPath = icontheme.lookup_icon('gtk-find', 16, 0).get_filename();
searchIconTexture.set_from_file(searchIconPath);
this.actor.add_actor(searchIconTexture);
// We need to initialize the text for the entry to have the cursor displayed
// in it. See http://bugzilla.openedhand.com/show_bug.cgi?id=1365
this._searchEntry = new Clutter.Entry({
font_name: "Sans 14px",
x: searchIconTexture.x
+ searchIconTexture.width + 4,
y: searchIconTexture.y,
width: rect.width - (searchIconTexture.x),
height: searchIconTexture.height,
text: ""});
this.actor.add_actor(this._searchEntry);
global.stage.set_key_focus(this._searchEntry);
this._searchQueued = false;
this._searchActive = false;
this._searchEntry.connect('notify::text', function (se, prop) {
if (me._searchQueued)
return;
Mainloop.timeout_add(250, function() {
let text = me._searchEntry.text.replace(/\s/g, "");
me._searchQueued = false;
me._searchActive = text != '';
me._appDisplay.setSearch(text);
me._docDisplay.setSearch(text);
return false;
});
});
this._searchEntry.connect('activate', function (se) {
// only one of the displays will have an item selected, so it's ok to
// call activateSelected() on both of them
me._appDisplay.activateSelected();
me._docDisplay.activateSelected();
return true;
});
this._searchEntry.connect('key-press-event', function (se, e) {
let code = e.get_code();
if (code == 9) {
// A single escape clears the entry, two of them hides the overlay
if (me._searchEntry.text == '')
me.emit('activated');
else
me._searchEntry.text = '';
return true;
} else if (code == 111) {
// selectUp and selectDown wrap around in their respective displays
// too, but there doesn't seem to be any flickering if we first select
// something in one display, but then unset the selection, and move
// it to the other display, so it's ok to do that.
if (me._appDisplay.hasSelected() && !me._appDisplay.selectUp() && me._docDisplay.hasItems()) {
me._appDisplay.unsetSelected();
me._docDisplay.selectLastItem();
} else if (me._docDisplay.hasSelected() && !me._docDisplay.selectUp() && me._appDisplay.hasItems()) {
me._docDisplay.unsetSelected();
me._appDisplay.selectLastItem();
}
return true;
} else if (code == 116) {
if (me._appDisplay.hasSelected() && !me._appDisplay.selectDown() && me._docDisplay.hasItems()) {
me._appDisplay.unsetSelected();
me._docDisplay.selectFirstItem();
} else if (me._docDisplay.hasSelected() && !me._docDisplay.selectDown() && me._appDisplay.hasItems()) {
me._docDisplay.unsetSelected();
me._appDisplay.selectFirstItem();
}
return true;
}
return false;
});
this._appsText = new Clutter.Label({ color: SIDESHOW_TEXT_COLOR,
font_name: "Sans Bold 14px",
text: "Applications",
x: SIDESHOW_PAD,
y: this._searchEntry.y + this._searchEntry.height + SIDESHOW_SECTION_MARGIN,
height: LABEL_HEIGHT});
this.actor.add_actor(this._appsText);
let sectionLabelHeight = LABEL_HEIGHT + SIDESHOW_SECTION_LABEL_MARGIN_BOTTOM;
let menuY = this._appsText.y + sectionLabelHeight;
// extra LABEL_HEIGHT is for the More link
this._itemDisplayHeight = global.screen_height - menuY - SIDESHOW_SECTION_MARGIN - sectionLabelHeight - SIDESHOW_PAD_BOTTOM - LABEL_HEIGHT;
this._appDisplay = new AppDisplay.AppDisplay(width, this._itemDisplayHeight / 2);
this._appDisplay.actor.x = SIDESHOW_PAD;
this._appDisplay.actor.y = menuY;
this.actor.add_actor(this._appDisplay.actor);
this._moreAppsText = new Clutter.Label({ color: SIDESHOW_TEXT_COLOR,
font_name: "Sans Bold 14px",
text: "More...",
y: this._appDisplay.actor.y + this._appDisplay.actor.height,
height: LABEL_HEIGHT,
reactive: true});
// This sets right-alignment manually.
this._moreAppsText.x = width - this._moreAppsText.width + SIDESHOW_PAD;
this.actor.add_actor(this._moreAppsText);
this._docsText = new Clutter.Label({ color: SIDESHOW_TEXT_COLOR,
font_name: "Sans Bold 14px",
text: "Recent Documents",
x: SIDESHOW_PAD,
y: this._moreAppsText.y + this._moreAppsText.height + SIDESHOW_SECTION_MARGIN,
height: LABEL_HEIGHT});
this.actor.add_actor(this._docsText);
this._docDisplay = new DocDisplay.DocDisplay(width, this._itemDisplayHeight - this._appDisplay.actor.height);
this._docDisplay.actor.x = SIDESHOW_PAD;
this._docDisplay.actor.y = this._docsText.y + sectionLabelHeight;
this.actor.add_actor(this._docDisplay.actor);
// When we are sliding out documents for the applcations 'More' mode, we need to know what fraction of the
// animation time we'll spend sliding out the "Recent Documents" section header, so that we can fully clip
// the document items in the remaining fraction of time. We do the animation in a linear fashion to make the
// two stage tweening process look right.
this._docsTextAnimationTimeRatio = me._docsText.height / me._docDisplay.actor.height;
/* Proxy the activated signals */
this._appDisplay.connect('activated', function(appDisplay) {
// we allow clicking on an item to launch it, and this unsets the selection
// so that we can move it to the item that was clicked on
me._appDisplay.unsetSelected();
me._docDisplay.unsetSelected();
me._appDisplay.doActivate();
me.emit('activated');
});
this._docDisplay.connect('activated', function(docDisplay) {
// we allow clicking on an item to launch it, and this unsets the selection
// so that we can move it to the item that was clicked on
me._appDisplay.unsetSelected();
me._docDisplay.unsetSelected();
me._docDisplay.doActivate();
me.emit('activated');
});
this._appDisplay.connect('redisplayed', function(appDisplay) {
// This can be applicable if app display previously had the selection,
// but it got updated and now has no items, so we can try to move
// the selection to the doc display.
if (!me._appDisplay.hasSelected() && !me._docDisplay.hasSelected())
me._docDisplay.selectFirstItem();
});
this._docDisplay.connect('redisplayed', function(docDisplay) {
if (!me._docDisplay.hasSelected() && !me._appDisplay.hasSelected())
me._appDisplay.selectFirstItem();
});
this._moreAppsText.connect('button-press-event',
function(o, event) {
if (me._moreMode) {
me._unsetMoreMode();
} else {
me._setMoreMode();
}
return true;
});
},
show: function() {
this._appDisplay.show();
this._docDisplay.show();
this._appDisplay.selectFirstItem();
if (!this._appDisplay.hasSelected())
this._docDisplay.selectFirstItem();
else
this._docDisplay.unsetSelected();
},
hide: function() {
this._appDisplay.hide();
this._docDisplay.hide();
this._searchEntry.text = '';
this._unsetMoreMode();
},
// Sets the 'More' mode for browsing applications. Slides down the documents section. Gives more space to
// the applications section once sliding of the documents section is completed.
_setMoreMode: function() {
if (this._moreMode)
return;
this._moreMode = true;
if (!this._docDisplay.actor.has_clip)
this._docDisplay.actor.set_clip(0, 0, this._docDisplay.actor.width, this._docDisplay.actor.height);
// Move the selection to the applications section if it was in the docs section.
this._docDisplay.unsetSelected();
if (!this._appDisplay.hasSelected())
this._appDisplay.selectFirstItem();
this._moreAppsText.hide();
Tweener.addTween(this._docDisplay.actor,
{ y: this._docDisplay.actor.y + this._docDisplay.actor.height,
clipHeight: 0,
time: ANIMATION_TIME * (1 - this._docsTextAnimationTimeRatio),
transition: "linear"
});
Tweener.addTween(this._docsText,
{ y: this._docsText.y + this._docDisplay.actor.height,
time: ANIMATION_TIME * (1 - this._docsTextAnimationTimeRatio),
transition: "linear",
onComplete: this._removeDocsSection,
onCompleteScope: this
});
this.emit('more-activated');
},
// Unsets the 'More' mode for browsing applications. Updates applications section to have
// smaller dimensions. Slides in the documents section.
_unsetMoreMode: function() {
if (!this._moreMode)
return;
this._moreMode = false;
this._moreAppsText.hide();
this._updateAppsSection();
this._docDisplay.show();
Tweener.addTween(this._docsText,
{ y: this._docsText.y - this._docsText.height,
clipHeight: this._docsText.height,
time: ANIMATION_TIME * this._docsTextAnimationTimeRatio,
transition: "linear",
onComplete: this._restoreDocsSection,
onCompleteScope: this
});
this.emit('less-activated');
},
// Completes sliding out the documents section and hides it so that it doesn't
// get updated on new searchs. Once that's completed, updates the dimensions of
// the applications section.
_removeDocsSection: function() {
this._docDisplay.hide();
Tweener.addTween(this._docsText,
{ y: this._docsText.y + this._docsText.height,
clipHeight: 0,
time: ANIMATION_TIME * this._docsTextAnimationTimeRatio,
transition: "linear",
onComplete: this._updateAppsSection,
onCompleteScope: this
});
},
// Completes restoring the documents section.
_restoreDocsSection: function() {
Tweener.addTween(this._docsText,
{ y: this._docsText.y - this._docDisplay.actor.height,
time: ANIMATION_TIME * (1 - this._docsTextAnimationTimeRatio),
transition: "linear"
});
Tweener.addTween(this._docDisplay.actor,
{ y: this._docDisplay.actor.y - this._docDisplay.actor.height,
clipHeight: this._docDisplay.actor.height,
time: ANIMATION_TIME * (1 - this._docsTextAnimationTimeRatio),
transition: "linear",
onComplete: this._onDocsSectionRestored,
onCompleteScope: this
});
},
// Selects the first item in the documents section if applications section has no items.
_onDocsSectionRestored: function() {
if (!this._appDisplay.hasItems())
this._docDisplay.selectFirstItem();
},
// Updates the applications section display and the 'More...' or 'Less...' control associated with it
// depending on the current mode. This function must only be called once after the 'More' mode has been
// changed, which is ensured by _setMoreMode() and _unsetMoreMode() functions.
_updateAppsSection: function() {
let additionalWidth = this._width + GenericDisplay.COLUMN_GAP;
if (this._moreMode) {
this._appDisplay.updateDimensions(this._width + additionalWidth,
this._itemDisplayHeight + LABEL_HEIGHT * 2 + SIDESHOW_SECTION_LABEL_MARGIN_BOTTOM);
this._moreAppsText.x = this._moreAppsText.x + additionalWidth;
this._moreAppsText.y = this._appDisplay.actor.y + this._appDisplay.actor.height;
this._moreAppsText.text = "Less...";
} else {
this._appDisplay.updateDimensions(this._width, this._itemDisplayHeight / 2);
this._moreAppsText.x = this._moreAppsText.x - additionalWidth;
this._moreAppsText.y = this._appDisplay.actor.y + this._appDisplay.actor.height;
this._moreAppsText.text = "More...";
}
this._moreAppsText.show();
}
};
Signals.addSignalMethods(Sideshow.prototype);
function Overlay() {
this._init();
}
Overlay.prototype = {
_init : function() {
let me = this;
let global = Shell.Global.get();
this._group = new Clutter.Group();
this.visible = false;
let background = new Clutter.Rectangle({ color: OVERLAY_BACKGROUND_COLOR,
reactive: true,
x: 0,
y: Panel.PANEL_HEIGHT,
width: global.screen_width,
height: global.screen_width - Panel.PANEL_HEIGHT });
this._group.add_actor(background);
this._group.hide();
global.overlay_group.add_actor(this._group);
// TODO - recalculate everything when desktop size changes
let screenWidth = global.screen_width;
let sideshowWidth = screenWidth - (screenWidth * WORKSPACE_GRID_SCALE) -
2 * WORKSPACE_GRID_PADDING;
this._sideshow = new Sideshow(this._group, sideshowWidth);
this._workspaces = null;
this._sideshow.connect('activated', function(sideshow) {
// TODO - have some sort of animation/effect while
// transitioning to the new app. We definitely need
// startup-notification integration at least.
me._deactivate();
});
this._sideshow.connect('more-activated', function(sideshow) {
if (me._workspaces != null)
me._workspaces.moveAside();
});
this._sideshow.connect('less-activated', function(sideshow) {
if (me._workspaces != null)
me._workspaces.moveToCenter();
});
},
show : function() {
if (this.visible)
return;
this.visible = true;
let global = Shell.Global.get();
this._sideshow.show();
this._workspaces = new Workspaces.Workspaces();
this._group.add_actor(this._workspaces.actor);
this._workspaces.actor.raise_top();
// All the the actors in the window group are completely obscured,
// hiding the group holding them while the overlay is displayed greatly
// increases performance of the overlay especially when there are many
// windows visible.
//
// If we switched to displaying the actors in the overlay rather than
// clones of them, this would obviously no longer be necessary.
global.window_group.hide();
this._group.show();
},
hide : function() {
if (!this.visible)
return;
this._workspaces.hide();
// Dummy tween, just waiting for the workspace animation
Tweener.addTween(this,
{ time: ANIMATION_TIME,
onComplete: this._hideDone,
onCompleteScope: this
});
},
_hideDone: function() {
let global = Shell.Global.get();
this.visible = false;
global.window_group.show();
this._workspaces.destroy();
this._workspaces = null;
this._sideshow.hide();
this._group.hide();
},
_deactivate : function() {
Main.hide_overlay();
}
};
Tweener.registerSpecialProperty("clipHeight", _clipHeightGet, _clipHeightSet);
function _clipHeightGet(actor) {
let [xOffset, yOffset, clipHeight, clipWidth] = actor.get_clip();
return clipHeight;
}
function _clipHeightSet(actor, clipHeight) {
actor.set_clip(0, 0, actor.width, clipHeight);
}