1 files changed, 321 insertions, 181 deletions

diff --git a/indra/newview/llpreviewtexture.cpp b/indra/newview/llpreviewtexture.cpp
index 9d7338c111..f91a18d8d3 100644..100755
--- a/indra/newview/llpreviewtexture.cpp
+++ b/indra/newview/llpreviewtexture.cpp
@@ -2,31 +2,25 @@
  * @file llpreviewtexture.cpp
  * @brief LLPreviewTexture class implementation
  *
- * $LicenseInfo:firstyear=2002&license=viewergpl$
- * 
- * Copyright (c) 2002-2009, Linden Research, Inc.
- * 
+ * $LicenseInfo:firstyear=2002&license=viewerlgpl$
  * Second Life Viewer Source Code
- * The source code in this file ("Source Code") is provided by Linden Lab
- * to you under the terms of the GNU General Public License, version 2.0
- * ("GPL"), unless you have obtained a separate licensing agreement
- * ("Other License"), formally executed by you and Linden Lab.  Terms of
- * the GPL can be found in doc/GPL-license.txt in this distribution, or
- * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * Copyright (C) 2010, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
  * 
- * There are special exceptions to the terms and conditions of the GPL as
- * it is applied to this Source Code. View the full text of the exception
- * in the file doc/FLOSS-exception.txt in this software distribution, or
- * online at
- * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * This library 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
+ * Lesser General Public License for more details.
  * 
- * By copying, modifying or distributing this software, you acknowledge
- * that you have read and understood your obligations described above,
- * and agree to abide by those obligations.
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  * 
- * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
- * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
- * COMPLETENESS OR PERFORMANCE.
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
  * $/LicenseInfo$
  */
 
@@ -38,15 +32,19 @@
 
 #include "llagent.h"
 #include "llbutton.h"
+#include "llcombobox.h"
 #include "llfilepicker.h"
 #include "llfloaterreg.h"
 #include "llimagetga.h"
+#include "llimagepng.h"
 #include "llinventory.h"
+#include "llnotificationsutil.h"
 #include "llresmgr.h"
 #include "lltrans.h"
 #include "lltextbox.h"
 #include "lltextureview.h"
 #include "llui.h"
+#include "llviewerinventory.h"
 #include "llviewertexture.h"
 #include "llviewertexturelist.h"
 #include "lluictrlfactory.h"
@@ -57,58 +55,41 @@ const S32 CLIENT_RECT_VPAD = 4;
 
 const F32 SECONDS_TO_SHOW_FILE_SAVED_MSG = 8.f;
 
+const F32 PREVIEW_TEXTURE_MAX_ASPECT = 200.f;
+const F32 PREVIEW_TEXTURE_MIN_ASPECT = 0.005f;
+
+
 LLPreviewTexture::LLPreviewTexture(const LLSD& key)
-	: LLPreview( key ),
+	: LLPreview(key),
 	  mLoadingFullImage( FALSE ),
 	  mShowKeepDiscard(FALSE),
 	  mCopyToInv(FALSE),
 	  mIsCopyable(FALSE),
+	  mIsFullPerm(FALSE),
 	  mUpdateDimensions(TRUE),
 	  mLastHeight(0),
-	  mLastWidth(0)
+	  mLastWidth(0),
+	  mAspectRatio(0.f),
+	  mPreviewToSave(FALSE),
+	  mImage(NULL),
+	  mImageOldBoostLevel(LLGLTexture::BOOST_NONE)
 {
-	const LLInventoryItem *item = getItem();
-	if(item)
+	updateImageID();
+	if (key.has("save_as"))
 	{
-		mShowKeepDiscard = item->getPermissions().getCreator() != gAgent.getID();
-		mImageID = item->getAssetUUID();
-		const LLPermissions& perm = item->getPermissions();
-		U32 mask = PERM_NONE;
-		if(perm.getOwner() == gAgent.getID())
-		{
-			mask = perm.getMaskBase();
-		}
-		else if(gAgent.isInGroup(perm.getGroup()))
-		{
-			mask = perm.getMaskGroup();
-		}
-		else
-		{
-			mask = perm.getMaskEveryone();
-		}
-		if((mask & PERM_ITEM_UNRESTRICTED) == PERM_ITEM_UNRESTRICTED)
-		{
-			mIsCopyable = TRUE;
-		}
-	}
-	else // not an item, assume it's an asset id
-	{
-		mImageID = mItemUUID;
-		mCopyToInv = TRUE;
-		mIsCopyable = TRUE;
+		mPreviewToSave = TRUE;
 	}
-
-	//Called from floater reg: LLUICtrlFactory::getInstance()->buildFloater(this, "floater_preview_texture.xml", FALSE);
 }
 
-
 LLPreviewTexture::~LLPreviewTexture()
 {
+	LLLoadedCallbackEntry::cleanUpCallbackList(&mCallbackTextureList) ;
+
 	if( mLoadingFullImage )
 	{
 		getWindow()->decBusyCount();
 	}
-
+	mImage->setBoostLevel(mImageOldBoostLevel);
 	mImage = NULL;
 }
 
@@ -119,7 +100,7 @@ BOOL LLPreviewTexture::postBuild()
 	{
 		getChild<LLButton>("Keep")->setLabel(getString("Copy"));
 		childSetAction("Keep",LLPreview::onBtnCopyToInv,this);
-		childSetVisible("Discard", false);
+		getChildView("Discard")->setVisible( false);
 	}
 	else if (mShowKeepDiscard)
 	{
@@ -128,10 +109,14 @@ BOOL LLPreviewTexture::postBuild()
 	}
 	else
 	{
-		childSetVisible("Keep", false);
-		childSetVisible("Discard", false);
+		getChildView("Keep")->setVisible( false);
+		getChildView("Discard")->setVisible( false);
 	}
 	
+	childSetAction("save_tex_btn", LLPreviewTexture::onSaveAsBtn, this);
+	getChildView("save_tex_btn")->setVisible( true);
+	getChildView("save_tex_btn")->setEnabled(canSaveAs());
+	
 	if (!mCopyToInv) 
 	{
 		const LLInventoryItem* item = getItem();
@@ -139,20 +124,47 @@ BOOL LLPreviewTexture::postBuild()
 		if (item)
 		{
 			childSetCommitCallback("desc", LLPreview::onText, this);
-			childSetText("desc", item->getDescription());
-			childSetPrevalidate("desc", &LLLineEditor::prevalidatePrintableNotPipe);
+			getChild<LLUICtrl>("desc")->setValue(item->getDescription());
+			getChild<LLLineEditor>("desc")->setPrevalidate(&LLTextValidate::validateASCIIPrintableNoPipe);
 		}
 	}
+
+	// Fill in ratios list with common aspect ratio values
+	mRatiosList.clear();
+	mRatiosList.push_back(LLTrans::getString("Unconstrained"));
+	mRatiosList.push_back("1:1");
+	mRatiosList.push_back("4:3");
+	mRatiosList.push_back("10:7");
+	mRatiosList.push_back("3:2");
+	mRatiosList.push_back("16:10");
+	mRatiosList.push_back("16:9");
+	mRatiosList.push_back("2:1");
+	
+	// Now fill combo box with provided list
+	LLComboBox* combo = getChild<LLComboBox>("combo_aspect_ratio");
+	combo->removeall();
+
+	for (std::vector<std::string>::const_iterator it = mRatiosList.begin(); it != mRatiosList.end(); ++it)
+	{
+		combo->add(*it);
+	}
+
+	childSetCommitCallback("combo_aspect_ratio", onAspectRatioCommit, this);
+	combo->setCurrentByIndex(0);
 	
 	return LLPreview::postBuild();
 }
 
+// static
+void LLPreviewTexture::onSaveAsBtn(void* data)
+{
+	LLPreviewTexture* self = (LLPreviewTexture*)data;
+	self->saveAs();
+}
+
 void LLPreviewTexture::draw()
 {
-	if (mUpdateDimensions)
-	{
-		updateDimensions();
-	}
+	updateDimensions();
 	
 	LLPreview::draw();
 
@@ -172,7 +184,7 @@ void LLPreviewTexture::draw()
 		if ( mImage.notNull() )
 		{
 			// Draw the texture
-			glColor3f( 1.f, 1.f, 1.f );
+			gGL.diffuseColor3f( 1.f, 1.f, 1.f );
 			gl_draw_scaled_image(interior.mLeft,
 								interior.mBottom,
 								interior.getWidth(),
@@ -199,7 +211,7 @@ void LLPreviewTexture::draw()
 
 			if( mLoadingFullImage )
 			{
-				LLFontGL::getFontSansSerif()->renderUTF8(LLTrans::getString("Receiving:"), 0,
+				LLFontGL::getFontSansSerif()->renderUTF8(LLTrans::getString("Receiving"), 0,
 					interior.mLeft + 4, 
 					interior.mBottom + 4,
 					LLColor4::white, LLFontGL::LEFT, LLFontGL::BOTTOM,
@@ -245,13 +257,14 @@ void LLPreviewTexture::draw()
 			}
 		}
 	} 
+
 }
 
 
 // virtual
 BOOL LLPreviewTexture::canSaveAs() const
 {
-	return mIsCopyable && !mLoadingFullImage && mImage.notNull() && !mImage->isMissingAsset();
+	return mIsFullPerm && !mLoadingFullImage && mImage.notNull() && !mImage->isMissingAsset();
 }
 
 
@@ -263,45 +276,91 @@ void LLPreviewTexture::saveAs()
 
 	LLFilePicker& file_picker = LLFilePicker::instance();
 	const LLInventoryItem* item = getItem() ;
-	if( !file_picker.getSaveFile( LLFilePicker::FFSAVE_TGA, item ? LLDir::getScrubbedFileName(item->getName()) : LLStringUtil::null) )
+	if( !file_picker.getSaveFile( LLFilePicker::FFSAVE_TGAPNG, item ? LLDir::getScrubbedFileName(item->getName()) : LLStringUtil::null) )
 	{
 		// User canceled or we failed to acquire save file.
 		return;
 	}
+	if(mPreviewToSave)
+	{
+		mPreviewToSave = FALSE;
+		LLFloaterReg::showTypedInstance<LLPreviewTexture>("preview_texture", item->getUUID());
+	}
+
 	// remember the user-approved/edited file name.
 	mSaveFileName = file_picker.getFirstFile();
 	mLoadingFullImage = TRUE;
 	getWindow()->incBusyCount();
+
+	mImage->forceToSaveRawImage(0) ;//re-fetch the raw image if the old one is removed.
 	mImage->setLoadedCallback( LLPreviewTexture::onFileLoadedForSave, 
-								0, TRUE, FALSE, new LLUUID( mItemUUID ) );
+								0, TRUE, FALSE, new LLUUID( mItemUUID ), &mCallbackTextureList );
 }
 
 // virtual
 void LLPreviewTexture::reshape(S32 width, S32 height, BOOL called_from_parent)
 {
-//	mLastHeight = 0;
-//	mLastWidth = 0;
-	mUpdateDimensions = TRUE;
 	LLPreview::reshape(width, height, called_from_parent);
+
+	LLRect dim_rect(getChildView("dimensions")->getRect());
+
+	S32 horiz_pad = 2 * (LLPANEL_BORDER_WIDTH + PREVIEW_PAD) + PREVIEW_RESIZE_HANDLE_SIZE;
+
+	// add space for dimensions and aspect ratio
+	S32 info_height = dim_rect.mTop + CLIENT_RECT_VPAD;
+
+	LLRect client_rect(horiz_pad, getRect().getHeight(), getRect().getWidth() - horiz_pad, 0);
+	client_rect.mTop -= (PREVIEW_HEADER_SIZE + CLIENT_RECT_VPAD);
+	client_rect.mBottom += PREVIEW_BORDER + CLIENT_RECT_VPAD + info_height ;
+
+	S32 client_width = client_rect.getWidth();
+	S32 client_height = client_rect.getHeight();
+
+	if (mAspectRatio > 0.f)
+	{
+		if(mAspectRatio > 1.f)
+		{
+			client_height = llceil((F32)client_width / mAspectRatio);
+			if(client_height > client_rect.getHeight())
+			{
+				client_height = client_rect.getHeight();
+				client_width = llceil((F32)client_height * mAspectRatio);
+			}
+		}
+		else//mAspectRatio < 1.f
+		{
+			client_width = llceil((F32)client_height * mAspectRatio);
+			if(client_width > client_rect.getWidth())
+			{
+				client_width = client_rect.getWidth();
+				client_height = llceil((F32)client_width / mAspectRatio);
+			}
+		}
+	}
+
+	mClientRect.setLeftTopAndSize(client_rect.getCenterX() - (client_width / 2), client_rect.getCenterY() +  (client_height / 2), client_width, client_height);
+
 }
 
 // virtual
 void LLPreviewTexture::onFocusReceived()
 {
-	mLastHeight = 0;
-	mLastWidth = 0;
-	mUpdateDimensions = TRUE;
 	LLPreview::onFocusReceived();
 }
 
+void LLPreviewTexture::openToSave()
+{
+	mPreviewToSave = TRUE;
+}
+
 // static
 void LLPreviewTexture::onFileLoadedForSave(BOOL success, 
-											LLViewerFetchedTexture *src_vi,
-											LLImageRaw* src, 
-											LLImageRaw* aux_src, 
-											S32 discard_level,
-											BOOL final,
-											void* userdata)
+					   LLViewerFetchedTexture *src_vi,
+					   LLImageRaw* src, 
+					   LLImageRaw* aux_src, 
+					   S32 discard_level,
+					   BOOL final,
+					   void* userdata)
 {
 	LLUUID* item_uuid = (LLUUID*) userdata;
 
@@ -320,18 +379,31 @@ void LLPreviewTexture::onFileLoadedForSave(BOOL success,
 
 	if( self && final && success )
 	{
-		LLPointer<LLImageTGA> image_tga = new LLImageTGA;
-		if( !image_tga->encode( src ) )
+		const U32 ext_length = 3;
+		std::string extension = self->mSaveFileName.substr( self->mSaveFileName.length() - ext_length);
+
+		// We only support saving in PNG or TGA format
+		LLPointer<LLImageFormatted> image;
+		if(extension == "png")
+		{
+			image = new LLImagePNG;
+		}
+		else if(extension == "tga")
+		{
+			image = new LLImageTGA;
+		}
+
+		if( image && !image->encode( src, 0 ) )
 		{
 			LLSD args;
 			args["FILE"] = self->mSaveFileName;
-			LLNotifications::instance().add("CannotEncodeFile", args);
+			LLNotificationsUtil::add("CannotEncodeFile", args);
 		}
-		else if( !image_tga->save( self->mSaveFileName ) )
+		else if( image && !image->save( self->mSaveFileName ) )
 		{
 			LLSD args;
 			args["FILE"] = self->mSaveFileName;
-			LLNotifications::instance().add("CannotWriteFile", args);
+			LLNotificationsUtil::add("CannotWriteFile", args);
 		}
 		else
 		{
@@ -344,8 +416,9 @@ void LLPreviewTexture::onFileLoadedForSave(BOOL success,
 
 	if( self && !success )
 	{
-		LLNotifications::instance().add("CannotDownloadFile");
+		LLNotificationsUtil::add("CannotDownloadFile");
 	}
+
 }
 
 
@@ -354,121 +427,101 @@ void LLPreviewTexture::onFileLoadedForSave(BOOL success,
 void LLPreviewTexture::updateDimensions()
 {
 	if (!mImage)
-		return;
-	
-	mUpdateDimensions = FALSE;
-	
-	S32 image_height = llmax(1, mImage->getFullHeight());
-	S32 image_width = llmax(1, mImage->getFullWidth());
-	// Attempt to make the image 1:1 on screen.
-	// If that fails, cut width by half.
-	S32 client_width = image_width;
-	S32 client_height = image_height;
-	S32 horiz_pad = 2 * (LLPANEL_BORDER_WIDTH + PREVIEW_PAD) + PREVIEW_RESIZE_HANDLE_SIZE;
-	S32 vert_pad = PREVIEW_HEADER_SIZE + 2 * CLIENT_RECT_VPAD + LLPANEL_BORDER_WIDTH;	
-	S32 max_client_width = gViewerWindow->getWindowWidth() - horiz_pad;
-	S32 max_client_height = gViewerWindow->getWindowHeight() - vert_pad;
-
-	while ((client_width > max_client_width) ||
-	       (client_height > max_client_height ) )
 	{
-		client_width /= 2;
-		client_height /= 2;
+		return;
 	}
-	
-	S32 view_width = client_width + horiz_pad;
-	S32 view_height = client_height + vert_pad;
-	
-	// set text on dimensions display (should be moved out of here and into a callback of some sort)
-	childSetTextArg("dimensions", "[WIDTH]", llformat("%d", mImage->getFullWidth()));
-	childSetTextArg("dimensions", "[HEIGHT]", llformat("%d", mImage->getFullHeight()));
-	
-	// add space for dimensions
-	S32 info_height = 0;
-	LLRect dim_rect;
-	childGetRect("dimensions", dim_rect);
-	S32 dim_height = dim_rect.getHeight();
-	info_height += dim_height + CLIENT_RECT_VPAD;
-	view_height += info_height;
-	
-	S32 button_height = 0;
-	if (mShowKeepDiscard || mCopyToInv) {  //mCopyToInvBtn
-
-		// add space for buttons
-		view_height += 	BTN_HEIGHT + CLIENT_RECT_VPAD;
-		button_height = BTN_HEIGHT + PREVIEW_PAD;
+	if ((mImage->getFullWidth() * mImage->getFullHeight()) == 0)
+	{
+		return;
 	}
 
-	view_width = llmax(view_width, getMinWidth());
-	view_height = llmax(view_height, getMinHeight());
-	
-	if (view_height != mLastHeight || view_width != mLastWidth)
+	if (mAssetStatus != PREVIEW_ASSET_LOADED)
 	{
-		if (getHost())
-		{
-			getHost()->growToFit(view_width, view_height);
-			reshape( view_width, view_height );
-			setOrigin( 0, getHost()->getRect().getHeight() - (view_height + PREVIEW_HEADER_SIZE) );
-		}
-		else
-		{
-			S32 old_top = getRect().mTop;
-			S32 old_left = getRect().mLeft;
-			reshape( view_width, view_height );
-			S32 new_bottom = old_top - getRect().getHeight();
-			setOrigin( old_left, new_bottom );
-		}
-		
-		// Try to keep whole view onscreen, don't allow partial offscreen.
-		if (getHost())
-			gFloaterView->adjustToFitScreen(getHost(), FALSE);
-		else
-			gFloaterView->adjustToFitScreen(this, FALSE);
-		
-		if (image_height > 1 && image_width > 1)
-		{
-			// Resize until we know the image's height
-			mLastWidth = view_width;
-			mLastHeight = view_height;
-		}
+		mAssetStatus = PREVIEW_ASSET_LOADED;
+		// Asset has been fully loaded, adjust aspect ratio
+		adjustAspectRatio();
 	}
 	
-	if (!mUserResized)
-	{
-		// clamp texture size to fit within actual size of floater after attempting resize
-		client_width = llmin(client_width, getRect().getWidth() - horiz_pad);
-		client_height = llmin(client_height, getRect().getHeight() - PREVIEW_HEADER_SIZE 
-						- (2 * CLIENT_RECT_VPAD) - LLPANEL_BORDER_WIDTH - info_height);
+	// Update the width/height display every time
+	getChild<LLUICtrl>("dimensions")->setTextArg("[WIDTH]",  llformat("%d", mImage->getFullWidth()));
+	getChild<LLUICtrl>("dimensions")->setTextArg("[HEIGHT]", llformat("%d", mImage->getFullHeight()));
 
+	// Reshape the floater only when required
+	if (mUpdateDimensions)
+	{
+		mUpdateDimensions = FALSE;
 		
+		//reshape floater
+		reshape(getRect().getWidth(), getRect().getHeight());
+
+		gFloaterView->adjustToFitScreen(this, FALSE);
+
+		LLRect dim_rect(getChildView("dimensions")->getRect());
+		LLRect aspect_label_rect(getChildView("aspect_ratio")->getRect());
+		getChildView("aspect_ratio")->setVisible( dim_rect.mRight < aspect_label_rect.mLeft);
 	}
-	else
+}
+
+
+// Return true if everything went fine, false if we somewhat modified the ratio as we bumped on border values
+bool LLPreviewTexture::setAspectRatio(const F32 width, const F32 height)
+{
+	mUpdateDimensions = TRUE;
+
+	// We don't allow negative width or height. Also, if height is positive but too small, we reset to default
+	// A default 0.f value for mAspectRatio means "unconstrained" in the rest of the code
+	if ((width <= 0.f) || (height <= F_APPROXIMATELY_ZERO))
 	{
-		client_width = getRect().getWidth() - horiz_pad;
-		client_height = getRect().getHeight() - vert_pad;
+		mAspectRatio = 0.f;
+		return false;
 	}
+	
+	// Compute and store the ratio
+	F32 ratio = width / height;
+	mAspectRatio = llclamp(ratio, PREVIEW_TEXTURE_MIN_ASPECT, PREVIEW_TEXTURE_MAX_ASPECT);
+	
+	// Return false if we clamped the value, true otherwise
+	return (ratio == mAspectRatio);
+}
 
-	S32 max_height = getRect().getHeight() - PREVIEW_BORDER - button_height
-		- CLIENT_RECT_VPAD - info_height - CLIENT_RECT_VPAD - PREVIEW_HEADER_SIZE;
-	S32 max_width = getRect().getWidth() - horiz_pad;
 
-	client_height = llclamp(client_height, 1, max_height);
-	client_width = llclamp(client_width, 1, max_width);
+void LLPreviewTexture::onAspectRatioCommit(LLUICtrl* ctrl, void* userdata)
+{	
+	LLPreviewTexture* self = (LLPreviewTexture*) userdata;
 	
-	LLRect window_rect(0, getRect().getHeight(), getRect().getWidth(), 0);
-	window_rect.mTop -= (PREVIEW_HEADER_SIZE + CLIENT_RECT_VPAD);
-	window_rect.mBottom += PREVIEW_BORDER + button_height + CLIENT_RECT_VPAD + info_height + CLIENT_RECT_VPAD;
-
-	mClientRect.setLeftTopAndSize(window_rect.getCenterX() - (client_width / 2), window_rect.mTop, client_width, client_height);
+	std::string ratio(ctrl->getValue().asString());
+	std::string::size_type separator(ratio.find_first_of(":/\\"));
+	
+	if (std::string::npos == separator) {
+		// If there's no separator assume we want an unconstrained ratio
+		self->setAspectRatio( 0.f, 0.f );
+		return;
+	}
+	
+	F32 width, height;
+	std::istringstream numerator(ratio.substr(0, separator));
+	std::istringstream denominator(ratio.substr(separator + 1));
+	numerator >> width;
+	denominator >> height;
+	
+	self->setAspectRatio( width, height );	
 }
 
-
 void LLPreviewTexture::loadAsset()
 {
-	mImage = LLViewerTextureManager::getFetchedTexture(mImageID, MIPMAP_TRUE, FALSE, LLViewerTexture::LOD_TEXTURE);
-	mImage->setBoostLevel(LLViewerTexture::BOOST_PREVIEW);
+	mImage = LLViewerTextureManager::getFetchedTexture(mImageID, FTT_DEFAULT, MIPMAP_TRUE, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE);
+	mImageOldBoostLevel = mImage->getBoostLevel();
+	mImage->setBoostLevel(LLGLTexture::BOOST_PREVIEW);
+	mImage->forceToSaveRawImage(0) ;
 	mAssetStatus = PREVIEW_ASSET_LOADING;
+	mUpdateDimensions = TRUE;
 	updateDimensions();
+	getChildView("save_tex_btn")->setEnabled(canSaveAs());
+	if (mObjectUUID.notNull())
+	{
+		// check that we can copy inworld items into inventory
+		getChildView("Keep")->setEnabled(mIsCopyable);
+	}
 }
 
 LLPreview::EAssetStatus LLPreviewTexture::getAssetStatus()
@@ -479,3 +532,90 @@ LLPreview::EAssetStatus LLPreviewTexture::getAssetStatus()
 	}
 	return mAssetStatus;
 }
+
+void LLPreviewTexture::adjustAspectRatio()
+{
+	S32 w = mImage->getFullWidth();
+    S32 h = mImage->getFullHeight();
+
+	// Determine aspect ratio of the image
+	S32 tmp;
+    while (h != 0)
+    {
+        tmp = w % h;
+        w = h;
+        h = tmp;
+    }
+	S32 divisor = w;
+	S32 num = mImage->getFullWidth() / divisor;
+	S32 denom = mImage->getFullHeight() / divisor;
+
+	if (setAspectRatio(num, denom))
+	{
+		// Select corresponding ratio entry in the combo list
+		LLComboBox* combo = getChild<LLComboBox>("combo_aspect_ratio");
+		if (combo)
+		{
+			std::ostringstream ratio;
+			ratio << num << ":" << denom;
+			std::vector<std::string>::const_iterator found = std::find(mRatiosList.begin(), mRatiosList.end(), ratio.str());
+			if (found == mRatiosList.end())
+			{
+				combo->setCurrentByIndex(0);
+			}
+			else
+			{
+				combo->setCurrentByIndex(found - mRatiosList.begin());
+			}
+		}
+	}
+
+	mUpdateDimensions = TRUE;
+}
+
+void LLPreviewTexture::updateImageID()
+{
+	const LLViewerInventoryItem *item = static_cast<const LLViewerInventoryItem*>(getItem());
+	if(item)
+	{
+		mImageID = item->getAssetUUID();
+
+		// here's the old logic...
+		//mShowKeepDiscard = item->getPermissions().getCreator() != gAgent.getID();
+		// here's the new logic... 'cos we hate disappearing buttons.
+		mShowKeepDiscard = TRUE;
+
+		mCopyToInv = FALSE;
+		LLPermissions perm(item->getPermissions());
+		mIsCopyable = perm.allowCopyBy(gAgent.getID(), gAgent.getGroupID()) && perm.allowTransferTo(gAgent.getID());
+		mIsFullPerm = item->checkPermissionsSet(PERM_ITEM_UNRESTRICTED);
+	}
+	else // not an item, assume it's an asset id
+	{
+		mImageID = mItemUUID;
+		mShowKeepDiscard = FALSE;
+		mCopyToInv = TRUE;
+		mIsCopyable = TRUE;
+		mIsFullPerm = TRUE;
+	}
+
+}
+
+/* virtual */
+void LLPreviewTexture::setObjectID(const LLUUID& object_id)
+{
+	mObjectUUID = object_id;
+
+	const LLUUID old_image_id = mImageID;
+
+	// Update what image we're pointing to, such as if we just specified the mObjectID
+	// that this mItemID is part of.
+	updateImageID();
+
+	// If the imageID has changed, start over and reload the new image.
+	if (mImageID != old_image_id)
+	{
+		mAssetStatus = PREVIEW_ASSET_UNLOADED;
+		loadAsset();
+	}
+}