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Bug 578178 – Show large previews for image files

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Use the actual image from the file for expanded mode previews for image files. Use the pixbuf loader to set the appropriate image size as soon as the image is prepared, but before it is loaded, to avoid loading large images. Apply the pixbuf orientation setting so that the image is properly rotated. Preserve the original size of the image if its dimensions are smaller than the space available.

Make sure we provide the accurate available width for the details actor. This
width has to exclude the padding and border width. Also provide the available height for the details actor.
This commit is contained in:
Marina Zhurakhinskaya
2009-04-28 15:35:36 -04:00
parent 59b12687d4
commit 82cf98740a
5 changed files with 273 additions and 31 deletions
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74
js/ui/genericDisplay.js
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@ -86,7 +86,7 @@ GenericDisplayItem.prototype = {
this._description = null;
this._icon = null;
this._preview = null;
this._previewIcon = null;
this._previewIcon = null;
this.dragActor = null;
@ -196,20 +196,19 @@ GenericDisplayItem.prototype = {
* the preview pop-up has and be item-type specific.
*
* availableWidth - width available for displaying details
* availableHeight - height available for displaying details
*/
createDetailsActor: function(availableWidth) {
let details = new Big.Box({ orientation: Big.BoxOrientation.HORIZONTAL,
createDetailsActor: function(availableWidth, availableHeight) {
let details = new Big.Box({ orientation: Big.BoxOrientation.VERTICAL,
spacing: PREVIEW_BOX_SPACING,
width: availableWidth });
this._ensurePreviewIconCreated();
let mainDetails = new Big.Box({ orientation: Big.BoxOrientation.HORIZONTAL,
spacing: PREVIEW_BOX_SPACING,
width: availableWidth });
if (this._previewIcon != null) {
let previewIconClone = new Clutter.Clone({ source: this._previewIcon });
details.append(previewIconClone, Big.BoxPackFlags.NONE);
}
// Inner box with name and description
// Inner box with name and description
let textDetails = new Big.Box({ orientation: Big.BoxOrientation.VERTICAL,
spacing: PREVIEW_BOX_SPACING });
let detailsName = new Clutter.Text({ color: ITEM_DISPLAY_NAME_COLOR,
@ -224,7 +223,23 @@ GenericDisplayItem.prototype = {
text: this._description.text });
textDetails.append(detailsDescription, Big.BoxPackFlags.NONE);
details.append(textDetails, Big.BoxPackFlags.EXPAND);
mainDetails.append(textDetails, Big.BoxPackFlags.EXPAND);
this._ensurePreviewIconCreated();
let largePreviewIcon = this._createLargePreviewIcon(availableWidth, Math.max(0, availableHeight - mainDetails.height - PREVIEW_BOX_SPACING));
if (this._previewIcon != null && largePreviewIcon == null) {
let previewIconClone = new Clutter.Clone({ source: this._previewIcon });
mainDetails.prepend(previewIconClone, Big.BoxPackFlags.NONE);
}
details.append(mainDetails, Big.BoxPackFlags.NONE);
if (largePreviewIcon != null) {
let largePreview = new Big.Box({ orientation: Big.BoxOrientation.HORIZONTAL });
largePreview.append(largePreviewIcon, Big.BoxPackFlags.NONE);
details.append(largePreview, Big.BoxPackFlags.NONE);
}
// We hide the preview pop-up if the details are shown elsewhere.
details.connect("show",
@ -315,6 +330,13 @@ GenericDisplayItem.prototype = {
this.actor.add_actor(this._description);
},
//// Virtual protected methods ////
// Creates and returns a large preview icon, but only if we have a detailed image.
_createLargePreviewIcon : function(availableWidth, availableHeight) {
return null;
},
//// Pure virtual protected methods ////
// Ensures the preview icon is created.
@ -442,7 +464,6 @@ GenericDisplay.prototype = {
this._displayedItemsCount = 0;
this._pageDisplayed = 0;
this._selectedIndex = -1;
this._keepDisplayCurrent = false;
// These two are public - .actor is the normal "actor subclass" property,
// but we also expose a .displayControl actor which is separate.
// See also getSideArea.
@ -454,17 +475,21 @@ GenericDisplay.prototype = {
orientation: Big.BoxOrientation.HORIZONTAL});
this._availableWidthForItemDetails = this._columnWidth;
this._availableHeightForItemDetails = this._height;
this.selectedItemDetails = new Big.Box({});
},
//// Public methods ////
setAvailableWidthForItemDetails: function(availableWidth) {
// Sets dimensions available for the item details display.
setAvailableDimensionsForItemDetails: function(availableWidth, availableHeight) {
this._availableWidthForItemDetails = availableWidth;
this._availableHeightForItemDetails = availableHeight;
},
getAvailableWidthForItemDetails: function() {
return this._availableWidthForItemDetails;
// Returns dimensions available for the item details display.
getAvailableDimensionsForItemDetails: function() {
return [this._availableWidthForItemDetails, this._availableHeightForItemDetails];
},
// Sets the search string and displays the matching items.
@ -567,9 +592,8 @@ GenericDisplay.prototype = {
// Updates the displayed items and makes the display actor visible.
show: function() {
this._keepDisplayCurrent = true;
this._redisplay(true);
this._grid.show();
this._redisplay(true);
},
// Hides the display actor.
@ -577,7 +601,6 @@ GenericDisplay.prototype = {
this._grid.hide();
this._filterReset();
this._removeAllDisplayItems();
this._keepDisplayCurrent = false;
},
// Returns an actor which acts as a sidebar; this is used for
@ -672,7 +695,7 @@ GenericDisplay.prototype = {
let displayItem = this._displayedItems[itemId];
let displayItemIndex = this._getIndexOfDisplayedActor(displayItem.actor);
if (this.hasSelected() && this._displayedItemsCount == 1) {
if (this.hasSelected() && (this._displayedItemsCount == 1 || !this._grid.visible)) {
this.unsetSelected();
} else if (this.hasSelected() && displayItemIndex < this._selectedIndex) {
this.selectUp();
@ -736,9 +759,9 @@ GenericDisplay.prototype = {
* their own while the user was browsing through the result pages.
*/
_redisplay: function(resetPage) {
if (!this._keepDisplayCurrent)
if (!this._grid.visible)
return;
this._refreshCache();
if (!this._filterActive())
this._setDefaultList();
@ -947,13 +970,20 @@ GenericDisplay.prototype = {
if (this._selectedIndex != -1) {
let prev = this._findDisplayedByIndex(this._selectedIndex);
prev.markSelected(false);
// Calling destroy() gets large image previews released as quickly as
// possible, if we just removed them, they might hang around for a while
// until the actor was garbage collected.
let children = this.selectedItemDetails.get_children();
for (let i = 0; i < children.length; i++)
children[i].destroy();
this.selectedItemDetails.remove_all();
}
this._selectedIndex = index;
if (index != -1 && index < this._displayedItemsCount) {
let item = this._findDisplayedByIndex(index);
item.markSelected(true);
this.selectedItemDetails.append(item.createDetailsActor(this._availableWidthForItemDetails), Big.BoxPackFlags.NONE);
this.selectedItemDetails.append(item.createDetailsActor(this._availableWidthForItemDetails, this._availableHeightForItemDetails), Big.BoxPackFlags.NONE);
this.emit('selected');
}
}