[gtk+] W32: Add MSW7 notebook theme, move old notebook theme into XP-only CSS

[Руслан Ижбулатов <ruslanizhb src gnome org>]

commit c2b4891854e938b47c857f134598bb96e845e112
Author: Руслан Ижбулатов <lrn1986 gmail com>
Date:   Fri Mar 28 00:27:04 2014 +0000

    W32: Add MSW7 notebook theme, move old notebook theme into XP-only CSS
    
    https://bugzilla.gnome.org/show_bug.cgi?id=727213

 gtk/resources/theme/gtk-win32-base.css |   44 ------
 gtk/resources/theme/gtk-win32-xp.css   |   43 ++++++
 gtk/resources/theme/gtk-win32.css      |  235 ++++++++++++++++++++++++++++++++
 3 files changed, 278 insertions(+), 44 deletions(-)
---
diff --git a/gtk/resources/theme/gtk-win32-base.css b/gtk/resources/theme/gtk-win32-base.css
index 1855bfe..d621178 100644
--- a/gtk/resources/theme/gtk-win32-base.css
+++ b/gtk/resources/theme/gtk-win32-base.css
@@ -804,50 +804,6 @@ GtkComboBox GtkArrow:insensitive {
     color: rgba(255, 0, 0, 0);
 }
 
-
-/* Notebook */
-
-.notebook {
-    background-color: #ffffff;
-    border-width: 1px 1px 1px 1px;
-    border-style: solid;
-    background-origin: padding-box;
-    background-clip: border-box;
-    background-image: -gtk-win32-theme-part(tab, 9 1, margins(-1 -3 -2 -1));
-    border-image: -gtk-win32-theme-part(tab, 9 1, margins(0 -2 -1 0)) 1 1 1 1 repeat;
-    -GtkNotebook-tab-overlap: 1;
-    -GtkNotebook-tab-curvature: 0;
-}
-
-.notebook tab {
-    border-width: 0;
-    background-image: -gtk-win32-theme-part(tab, 1 1);
-    padding: 0px 4px 0px 4px;
-}
-
-.notebook tab.left, .notebook tab.right {
-    padding: 4px 0px 4px 0px;
-}
-
-.notebook tab:active {
-    background-image: -gtk-win32-theme-part(tab, 1 3, margins(0 0 -1 0));
-}
-.notebook tab:active.top {
-    padding: 2px 4px 1px 4px;
-}
-
-.notebook tab:active.bottom {
-    padding: 1px 4px 2px 4px;
-}
-
-.notebook tab:active.right {
-    padding: 4px 4px 4px 1px;
-}
-
-.notebook tab:active.left {
-    padding: 4px 1px 4px 4px;
-}
-
 /* Toolbar */
 
 .toolbar {
diff --git a/gtk/resources/theme/gtk-win32-xp.css b/gtk/resources/theme/gtk-win32-xp.css
index c1788a2..ff61e9d 100644
--- a/gtk/resources/theme/gtk-win32-xp.css
+++ b/gtk/resources/theme/gtk-win32-xp.css
@@ -80,3 +80,46 @@ GtkProgressBar.progressbar {
     border-style: solid;
     border-color: transparent;
 }
+
+/* Notebook */
+
+.notebook {
+    background-color: #ffffff;
+    border-width: 1px 1px 1px 1px;
+    border-style: solid;
+    background-origin: padding-box;
+    background-clip: border-box;
+    background-image: -gtk-win32-theme-part(tab, 9 1, margins(-1 -3 -2 -1));
+    border-image: -gtk-win32-theme-part(tab, 9 1, margins(0 -2 -1 0)) 1 1 1 1 repeat;
+    -GtkNotebook-tab-overlap: 1;
+    -GtkNotebook-tab-curvature: 0;
+}
+
+.notebook tab {
+    border-width: 0;
+    background-image: -gtk-win32-theme-part(tab, 1 1);
+    padding: 0px 4px 0px 4px;
+}
+
+.notebook tab.left, .notebook tab.right {
+    padding: 4px 0px 4px 0px;
+}
+
+.notebook tab:active {
+    background-image: -gtk-win32-theme-part(tab, 1 3, margins(0 0 -1 0));
+}
+.notebook tab:active.top {
+    padding: 2px 4px 1px 4px;
+}
+
+.notebook tab:active.bottom {
+    padding: 1px 4px 2px 4px;
+}
+
+.notebook tab:active.right {
+    padding: 4px 4px 4px 1px;
+}
+
+.notebook tab:active.left {
+    padding: 4px 1px 4px 4px;
+}
diff --git a/gtk/resources/theme/gtk-win32.css b/gtk/resources/theme/gtk-win32.css
index f8d774f..f812e4d 100644
--- a/gtk/resources/theme/gtk-win32.css
+++ b/gtk/resources/theme/gtk-win32.css
@@ -82,3 +82,238 @@
     background-image: -gtk-win32-theme-part(menu, 11 2);
     border-width: 0;
 }
+
+/* Notebook */
+.notebook {
+    /* This prevents a thin half-transparent line between the pane and the tab */
+    background-color: -gtk-win32-color(tab, 5);
+
+    border-width: 1px 1px 1px 1px;
+    border-style: solid;
+    background-origin: padding-box;
+    background-clip: border-box;
+
+    /* W32 theme draws it with borders and all, cut them away */
+    background-image: -gtk-win32-theme-part(tab, 9 1, margins(-1 -3 -2 -1));
+
+    /* Grab the borders now and duplicate them across the perimeter */
+    border-image: -gtk-win32-theme-part(tab, 9 1, margins(0 -2 -1 0)) 1 1 1 1 repeat;
+    /* MSW7 themes draw tab overlaps differently. Net result is:
+       * inactive tab text never moves no matter which tabs get to be active
+       * active tab text moves only up
+       * active tab steals space from its neighbors (overlapping their borders without moving them)
+       * inactive tab does not steal any space from its neighbors (prelight makes that obvious - one tab's 
borders light up, its neighbors' don't change)
+       * first(last in RTL?) tab has extra gap that disappears (due to overlapping) when this tab activates
+       This can't be emulated in GTK, so we won't even try.
+    */
+    -GtkNotebook-tab-overlap: 0;
+    -GtkNotebook-tab-curvature: 0;
+}
+
+.notebook tab {
+    /* Make sure parts not covered by the background are transparent */
+    background-color: transparent;
+
+    /* Use GTK border, since we can control where it's drawn (unlike built-in theme border, which is always 
left-top-right) */
+    border-width: 1px;
+    border-style: solid;
+    border-color: rgb(137, 140, 149);
+
+    /* Sadly, GTK CSS can't rotate images, which means that we can't use tabs from the theme */
+    background-image: none;
+    /* Don't use border image either, since it has no bottom border */
+    border-image: none;
+
+    /* By default tabs are large enough for their labels, give them more space */
+    padding: 2px;
+}
+
+/* W32 has no concept of notebook header (the rectangle where tabs are - including the area where tabs could 
be, if you add more of them), make it disappear */
+.notebook.header {
+  background-color: transparent;
+  background-image: none;
+  border-width: 0px;
+  border-color: transparent;
+}
+
+/* Draw everything ourselves. Default MSW7 theme for a top tab (the only kind of tab available) is:
+ 1-px grey border
+ extra 1-px inside white borders to the left and the right
+ top 8 pixels of the tab are light grey gradient (from 95% to 92% here)
+ rest of the tab is dark grey gradient (quick 3-pixel fall from 87% to 85%, then uniform until half the way, 
then drops to 84%, last 4 pixels fall down to 81%)
+
+ Prelight tab is the same as normal, but with light blue instead of grey.
+ Active tabs (prelight ot not) are simple white.
+ Disabled tabs are simple dark grey.
+ There's also theme part for "focused" tab (simple pale blue), but it is unclear in which circumstances it's 
used.
+
+ Normal and selected tab borders are grey.
+ Prelight tab borders are blue.
+ Disabled tab borders are darker grey.
+ */
+.notebook tab.top {
+    background-image: -gtk-gradient (linear,
+               0 0, 0 1,
+               color-stop(0, rgb(242, 242, 242)),
+               color-stop(0.2, rgb(235, 235, 235)),
+               color-stop(0.21, rgb(221, 221, 221)),
+               color-stop(0.22, rgb(216, 216, 216)),
+               color-stop(0.6, rgb(214, 214, 214)),
+               color-stop(0.9, rgb(214, 214, 214)),
+               color-stop(1, rgb(207, 207, 207)));
+    box-shadow: inset -1px 0px 0px white, inset 1px 0px 0px white;
+    /* Tab border is 1px (see above), override bottom border (for top tabs) to be 0px */
+    border-bottom: 0px;
+}
+
+.notebook tab.top:prelight {
+    background-image: -gtk-gradient (linear,
+               0 0, 0 1,
+               color-stop(0, rgb(234, 246, 253)),
+               color-stop(0.2, rgb(217, 240, 252)),
+               color-stop(0.21, rgb(190, 230, 253)),
+               color-stop(0.22, rgb(181, 226, 250)),
+               color-stop(0.6, rgb(178, 224, 249)),
+               color-stop(0.9, rgb(175, 222, 248)),
+               color-stop(1, rgb(167, 217, 245)));
+}
+
+.notebook tab.left {
+    background-image: -gtk-gradient (linear,
+               0 0, 1 0,
+               color-stop(0, rgb(242, 242, 242)),
+               color-stop(0.2, rgb(235, 235, 235)),
+               color-stop(0.21, rgb(221, 221, 221)),
+               color-stop(0.22, rgb(216, 216, 216)),
+               color-stop(0.6, rgb(214, 214, 214)),
+               color-stop(0.9, rgb(214, 214, 214)),
+               color-stop(1, rgb(207, 207, 207)));
+
+    box-shadow: inset 0px -1px 0px white, inset 0px 1px 0px white;
+    /* Tab border is 1px (see above), override right border (for left tabs) to be 0px */
+    border-right: 0px;
+}
+
+.notebook tab.left:prelight {
+    background-image: -gtk-gradient (linear,
+               0 0, 1 0,
+               color-stop(0, rgb(234, 246, 253)),
+               color-stop(0.2, rgb(217, 240, 252)),
+               color-stop(0.21, rgb(190, 230, 253)),
+               color-stop(0.22, rgb(181, 226, 250)),
+               color-stop(0.6, rgb(178, 224, 249)),
+               color-stop(0.9, rgb(175, 222, 248)),
+               color-stop(1, rgb(167, 217, 245)));
+}
+
+.notebook tab.right {
+    background-image: -gtk-gradient (linear,
+               1 0, 0 0,
+               color-stop(0, rgb(242, 242, 242)),
+               color-stop(0.2, rgb(235, 235, 235)),
+               color-stop(0.21, rgb(221, 221, 221)),
+               color-stop(0.22, rgb(216, 216, 216)),
+               color-stop(0.6, rgb(214, 214, 214)),
+               color-stop(0.9, rgb(214, 214, 214)),
+               color-stop(1, rgb(207, 207, 207)));
+
+    box-shadow: inset 0px 1px 0px white, inset 0px -1px 0px white;
+    /* Tab border is 1px (see above), override left border (for right tabs) to be 0px */
+    border-left: 0px;
+}
+
+.notebook tab.right:prelight {
+    background-image: -gtk-gradient (linear,
+               1 0, 0 0,
+               color-stop(0, rgb(234, 246, 253)),
+               color-stop(0.2, rgb(217, 240, 252)),
+               color-stop(0.21, rgb(190, 230, 253)),
+               color-stop(0.22, rgb(181, 226, 250)),
+               color-stop(0.6, rgb(178, 224, 249)),
+               color-stop(0.9, rgb(175, 222, 248)),
+               color-stop(1, rgb(167, 217, 245)));
+}
+
+.notebook tab.bottom {
+    background-image: -gtk-gradient (linear,
+               0 1, 0 0,
+               color-stop(0, rgb(242, 242, 242)),
+               color-stop(0.2, rgb(235, 235, 235)),
+               color-stop(0.21, rgb(221, 221, 221)),
+               color-stop(0.22, rgb(216, 216, 216)),
+               color-stop(0.6, rgb(214, 214, 214)),
+               color-stop(0.9, rgb(214, 214, 214)),
+               color-stop(1, rgb(207, 207, 207)));
+    box-shadow: inset -1px 0px 0px white, inset 1px 0px 0px white;
+    /* Tab border is 1px (see above), override top border (for bottom tabs) to be 0px */
+    border-top: 0px;
+}
+
+.notebook tab.bottom:prelight {
+    background-image: -gtk-gradient (linear,
+               0 1, 0 0,
+               color-stop(0, rgb(234, 246, 253)),
+               color-stop(0.2, rgb(217, 240, 252)),
+               color-stop(0.21, rgb(190, 230, 253)),
+               color-stop(0.22, rgb(181, 226, 250)),
+               color-stop(0.6, rgb(178, 224, 249)),
+               color-stop(0.9, rgb(175, 222, 248)),
+               color-stop(1, rgb(167, 217, 245)));
+}
+
+.notebook tab:active,
+.notebook tab:active:prelight,
+.notebook tab.right:active,
+.notebook tab.right:active:prelight,
+.notebook tab.bottom:active,
+.notebook tab.bottom:active:prelight,
+.notebook tab.left:active,
+.notebook tab.left:active:prelight
+{
+    /* active tabs are pure white with grey borders, and prelight changes nothing */
+    background-image: none;
+    background-color: white;
+    border-color: rgb(137, 140, 149);
+}
+
+.notebook tab:insensitive,
+.notebook tab:insensitive,
+.notebook tab.right:insensitive,
+.notebook tab.bottom:insensitive,
+.notebook tab.left:insensitive
+{
+    /* insensitive tabs are dark grey white with even darker grey borders */
+    background-image: none;
+    background-color: rgb(201, 202, 203);
+    border-color: rgb(128, 128, 128);
+}
+
+.notebook tab:prelight,
+.notebook tab.right:prelight,
+.notebook tab.bottom:prelight,
+.notebook tab.left:prelight
+{
+    /* prelight tabs have blue borders */
+    border-color: rgb(60, 127, 177);
+}
+
+
+.notebook tab.top:active {
+    /* Make active tab "stick out" up by padding it more at the bottom */
+    padding-bottom: 4px;
+}
+
+.notebook tab.right:active {
+    /* Make active tab "stick out" right by padding it more at the left */
+    padding-left: 4px;
+}
+
+.notebook tab.bottom:active {
+    /* Make active tab "stick out" down by padding it more at the top */
+    padding-top: 4px;
+}
+
+.notebook tab.left:active {
+    /* Make active tab "stick out" left by padding it more at the right */
+    padding-right: 4px;
+}