Bug 946987 - Add 2x tab images for Windows and use them for 1.25dppx and higher. r=mconley

--HG--
extra : rebase_source : 918ece60e8ba56c81fdfc7be4bbdd80f39dcf82f

browser/themes/windows/browser-lightweightTheme.css

@@ -29,3 +29,11 @@
   background-position: 0 0, 0 0, right top;
   background-repeat: repeat-x, repeat-x, no-repeat;
 }
+
+@media (min-resolution: 1.25dppx) {
+  #tabbrowser-tabs:not([movingtab]) > .tabbrowser-tab > .tab-stack > .tab-background > .tab-background-middle[selected=true]:-moz-lwtheme {
+    background-image: url(chrome://browser/skin/tabbrowser/tab-active-middle@2x.png),
+                      @fgTabTextureLWT@;/*,
+                      lwtHeader;*/
+  }
+}

browser/themes/windows/browser.css

@@ -1809,6 +1809,39 @@ toolbarbutton[type="socialmark"] > .toolbarbutton-icon {
 
 %include ../shared/tabs.inc.css
 
+@media (min-resolution: 1.25dppx) {
+  /* image preloading hack from shared/tabs.inc.css */
+  #tabbrowser-tabs::before {
+    background-image:
+      url(chrome://browser/skin/tabbrowser/tab-background-end@2x.png),
+      url(chrome://browser/skin/tabbrowser/tab-background-middle@2x.png),
+      url(chrome://browser/skin/tabbrowser/tab-background-start@2x.png);
+  }
+
+  .tabbrowser-tab:hover > .tab-stack > .tab-background:not([selected=true]),
+  .tabs-newtab-button:hover {
+    background-image: url(chrome://browser/skin/tabbrowser/tab-background-start@2x.png),
+                      url(chrome://browser/skin/tabbrowser/tab-background-middle@2x.png),
+                      url(chrome://browser/skin/tabbrowser/tab-background-end@2x.png);
+  }
+
+  .tab-background-middle[selected=true] {
+    background-image: url(chrome://browser/skin/tabbrowser/tab-active-middle@2x.png),
+                      @fgTabTexture@,
+                      none;
+  }
+
+  .tab-background-start[selected=true]:-moz-locale-dir(ltr)::after,
+  .tab-background-end[selected=true]:-moz-locale-dir(rtl)::after {
+    background-image: url(chrome://browser/skin/tabbrowser/tab-stroke-start@2x.png);
+  }
+
+  .tab-background-end[selected=true]:-moz-locale-dir(ltr)::after,
+  .tab-background-start[selected=true]:-moz-locale-dir(rtl)::after {
+    background-image: url(chrome://browser/skin/tabbrowser/tab-stroke-end@2x.png);
+  }
+}
+
 %ifndef WINDOWS_AERO
 /* Use lighter colors of buttons and text in the titlebar on luna-blue */
 @media (-moz-windows-theme: luna-blue) {

browser/themes/windows/jar.mn

@@ -185,11 +185,15 @@ browser.jar:
         skin/classic/browser/tabbrowser/loading.png                  (tabbrowser/loading.png)
         skin/classic/browser/tabbrowser/tab.png                      (tabbrowser/tab.png)
         skin/classic/browser/tabbrowser/tab-active-middle.png        (tabbrowser/tab-active-middle.png)
+        skin/classic/browser/tabbrowser/tab-active-middle@2x.png     (tabbrowser/tab-active-middle@2x.png)
         skin/classic/browser/tabbrowser/tab-arrow-left.png           (tabbrowser/tab-arrow-left.png)
         skin/classic/browser/tabbrowser/tab-arrow-left-inverted.png  (tabbrowser/tab-arrow-left-inverted.png)
         skin/classic/browser/tabbrowser/tab-background-start.png     (tabbrowser/tab-background-start.png)
+        skin/classic/browser/tabbrowser/tab-background-start@2x.png  (tabbrowser/tab-background-start@2x.png)
         skin/classic/browser/tabbrowser/tab-background-middle.png    (tabbrowser/tab-background-middle.png)
+        skin/classic/browser/tabbrowser/tab-background-middle@2x.png (tabbrowser/tab-background-middle@2x.png)
         skin/classic/browser/tabbrowser/tab-background-end.png       (tabbrowser/tab-background-end.png)
+        skin/classic/browser/tabbrowser/tab-background-end@2x.png    (tabbrowser/tab-background-end@2x.png)
         skin/classic/browser/tabbrowser/tab-overflow-border.png      (tabbrowser/tab-overflow-border.png)
 
 # NOTE: The following two files (tab-selected-end.svg, tab-selected-start.svg) get pre-processed in
@@ -198,7 +202,9 @@ browser.jar:
         skin/classic/browser/tabbrowser/tab-selected-start.svg       (tab-selected-start.svg)
 
         skin/classic/browser/tabbrowser/tab-stroke-end.png           (tabbrowser/tab-stroke-end.png)
+        skin/classic/browser/tabbrowser/tab-stroke-end@2x.png        (tabbrowser/tab-stroke-end@2x.png)
         skin/classic/browser/tabbrowser/tab-stroke-start.png         (tabbrowser/tab-stroke-start.png)
+        skin/classic/browser/tabbrowser/tab-stroke-start@2x.png      (tabbrowser/tab-stroke-start@2x.png)
         skin/classic/browser/tabbrowser/tabDragIndicator.png         (tabbrowser/tabDragIndicator.png)
         skin/classic/browser/tabbrowser/tab-separator-luna-blue.png  (tabbrowser/tab-separator-luna-blue.png)
         skin/classic/browser/tabbrowser/tab-separator.png            (tabbrowser/tab-separator.png)
@@ -543,11 +549,15 @@ browser.jar:
         skin/classic/aero/browser/tabbrowser/loading.png             (tabbrowser/loading.png)
         skin/classic/aero/browser/tabbrowser/tab.png                 (tabbrowser/tab.png)
         skin/classic/aero/browser/tabbrowser/tab-active-middle.png   (tabbrowser/tab-active-middle.png)
+        skin/classic/aero/browser/tabbrowser/tab-active-middle@2x.png (tabbrowser/tab-active-middle@2x.png)
         skin/classic/aero/browser/tabbrowser/tab-arrow-left.png      (tabbrowser/tab-arrow-left.png)
         skin/classic/aero/browser/tabbrowser/tab-arrow-left-inverted.png (tabbrowser/tab-arrow-left-inverted.png)
         skin/classic/aero/browser/tabbrowser/tab-background-start.png    (tabbrowser/tab-background-start.png)
+        skin/classic/aero/browser/tabbrowser/tab-background-start@2x.png (tabbrowser/tab-background-start@2x.png)
         skin/classic/aero/browser/tabbrowser/tab-background-middle.png   (tabbrowser/tab-background-middle.png)
+        skin/classic/aero/browser/tabbrowser/tab-background-middle@2x.png (tabbrowser/tab-background-middle@2x.png)
         skin/classic/aero/browser/tabbrowser/tab-background-end.png      (tabbrowser/tab-background-end.png)
+        skin/classic/aero/browser/tabbrowser/tab-background-end@2x.png   (tabbrowser/tab-background-end@2x.png)
         skin/classic/aero/browser/tabbrowser/tab-overflow-border.png (tabbrowser/tab-overflow-border.png)
 
 # NOTE: The following two files (tab-selected-end.svg, tab-selected-start.svg) get pre-processed in
@@ -556,7 +566,9 @@ browser.jar:
         skin/classic/aero/browser/tabbrowser/tab-selected-start.svg  (tab-selected-start-aero.svg)
 
         skin/classic/aero/browser/tabbrowser/tab-stroke-end.png      (tabbrowser/tab-stroke-end.png)
+        skin/classic/aero/browser/tabbrowser/tab-stroke-end@2x.png   (tabbrowser/tab-stroke-end@2x.png)
         skin/classic/aero/browser/tabbrowser/tab-stroke-start.png    (tabbrowser/tab-stroke-start.png)
+        skin/classic/aero/browser/tabbrowser/tab-stroke-start@2x.png (tabbrowser/tab-stroke-start@2x.png)
         skin/classic/aero/browser/tabbrowser/tabDragIndicator.png    (tabbrowser/tabDragIndicator.png)
         skin/classic/aero/browser/tabbrowser/tab-separator.png       (tabbrowser/tab-separator-aero.png)
         skin/classic/aero/browser/tabview/close.png                  (tabview/close.png)