SL-19108 Fallback thumbnail

indra/newview/llthumbnailctrl.cpp

@@ -43,6 +43,7 @@ static LLDefaultChildRegistry::Register<LLThumbnailCtrl> r("thumbnail");
 LLThumbnailCtrl::Params::Params()
 : border("border")
 , border_color("border_color")
+, fallback_image("fallback_image")
 , image_name("image_name")
 , border_visible("show_visible", false)
 , interactable("interactable", false)
@@ -53,6 +54,7 @@ LLThumbnailCtrl::LLThumbnailCtrl(const LLThumbnailCtrl::Params& p)
 :	LLUICtrl(p)
 ,   mBorderColor(p.border_color())
 ,   mBorderVisible(p.border_visible())
+,   mFallbackImagep(p.fallback_image)
 ,   mInteractable(p.interactable())
 ,   mShowLoadingPlaceholder(p.show_loading())
 ,	mPriority(LLGLTexture::BOOST_PREVIEW)
@@ -76,6 +78,7 @@ LLThumbnailCtrl::~LLThumbnailCtrl()
 {
 	mTexturep = nullptr;
     mImagep = nullptr;
+    mFallbackImagep = nullptr;
 }
 
 
@@ -106,7 +109,30 @@ void LLThumbnailCtrl::draw()
     }
     else if( mImagep.notNull() )
     {
-        mImagep->draw(getLocalRect(), UI_VERTEX_COLOR % alpha );
+        mImagep->draw(draw_rect, UI_VERTEX_COLOR % alpha );
+    }
+    else if (mFallbackImagep.notNull())
+    {
+        if (draw_rect.getWidth() > mFallbackImagep->getWidth()
+            && draw_rect.getHeight() > mFallbackImagep->getHeight())
+        {
+            S32 img_width = mFallbackImagep->getWidth();
+            S32 img_height = mFallbackImagep->getHeight();
+            S32 rect_width = draw_rect.getWidth();
+            S32 rect_height = draw_rect.getHeight();
+
+            LLRect fallback_rect;
+            fallback_rect.mLeft = draw_rect.mLeft + (rect_width - img_width) / 2;
+            fallback_rect.mRight = fallback_rect.mLeft + img_width;
+            fallback_rect.mBottom = draw_rect.mBottom + (rect_height - img_height) / 2;
+            fallback_rect.mTop = fallback_rect.mBottom + img_height;
+
+            mFallbackImagep->draw(fallback_rect, UI_VERTEX_COLOR % alpha);
+        }
+        else
+        {
+            mFallbackImagep->draw(draw_rect, UI_VERTEX_COLOR % alpha);
+        }
     }
     else
     {

indra/newview/llthumbnailctrl.h

@@ -49,6 +49,7 @@ public:
         Optional<LLViewBorder::Params> border;
         Optional<LLUIColor>        border_color;
         Optional<std::string>      image_name;
+        Optional<LLUIImage*>       fallback_image;
         Optional<bool>             border_visible;
         Optional<bool>             interactable;
         Optional<bool>             show_loading;
@@ -80,6 +81,7 @@ private:
     
 	LLPointer<LLViewerFetchedTexture> mTexturep;
     LLPointer<LLUIImage> mImagep;
+    LLPointer<LLUIImage> mFallbackImagep;
 };
 
 #endif

indra/newview/skins/default/textures/textures.xml

@@ -690,6 +690,7 @@ with the same filename but different name
   <texture name="TextField_Active" file_name="widgets/TextField_Active.png" preload="true" scale.left="9" scale.top="12" scale.right="248" scale.bottom="12" />
   <texture name="TextField_Search_Highlight" file_name="widgets/TextField_Search_Highlight.png" preload="true" scale.left="9" scale.top="12" scale.right="248" scale.bottom="12" />
 
+  <texture name="Thumbnail_Fallback" file_name="icons/thumbnail_fallback_icon.png" preload="true" />
 
   <texture name="Toast_CloseBtn" file_name="windows/Toast_CloseBtn.png" preload="true" />
   <texture name="Toast_Background" file_name="windows/Toast_Background.png" preload="true"

indra/newview/skins/default/xui/en/floater_change_item_thumbnail.xml

@@ -56,6 +56,7 @@
 
   <thumbnail
     name="item_thumbnail"
+    fallback_image="Thumbnail_Fallback"
     follows="top|left"
     layout="topleft"
     left="32"

indra/newview/skins/default/xui/en/sidepanel_item_info.xml

@@ -93,6 +93,7 @@
       
       <thumbnail
         name="item_thumbnail"
+        fallback_image="Thumbnail_Fallback"
         follows="top|left"
         layout="topleft"
         left="5"