From d15039c50e14b15c0245e43f72eb8de2bfe65cd1 Mon Sep 17 00:00:00 2001
From: Dustin Falgout <dustin@falgout.us>
Date: Thu, 14 Apr 2016 06:00:00 -0500
Subject: [PATCH] notebook tabs redesign

---
 gtk-3.20/scss/widgets/_notebook.scss | 326 +++++++++++++++++++--------
 1 file changed, 237 insertions(+), 89 deletions(-)

diff --git a/gtk-3.20/scss/widgets/_notebook.scss b/gtk-3.20/scss/widgets/_notebook.scss
index 3c9169a..f3360d4 100644
--- a/gtk-3.20/scss/widgets/_notebook.scss
+++ b/gtk-3.20/scss/widgets/_notebook.scss
@@ -6,8 +6,27 @@
 ***********/
 
 @include exports("notebook") {
-
     notebook {
+        &.frame {
+            border-color: border_normal($base_color);
+
+            &.top {
+                border-width: 1px 1px 0;
+            }
+
+            &.right {
+                border-width: 1px 1px 1px 0;
+            }
+
+            &.bottom {
+                border-width: 0 1px 1px;
+            }
+
+            &.left {
+                border-width: 1px 0 1px 1px;
+            }
+        }
+
         > header {
             padding: 0;
             margin: 0;
@@ -18,20 +37,226 @@
             background-color: shade($base_color, .9);
             color: $text_color;
 
-            &.frame {
-                border-color: border_normal($base_color);
+            &.top > tabs > arrow {
+                @extend %notebook_vert_arrows;
 
-                &.top { border-width: 1px 1px 0; }
-
-                &.right { border-width: 1px 1px 1px 0; }
-
-                &.bottom { border-width: 0 1px 1px; }
-
-                &.left { border-width: 1px 0 1px 1px; }
+                border-top-style: none;
             }
 
-            tabs arrow {
-                margin: 5px;
+            &.bottom > tabs > arrow {
+                @extend %notebook_vert_arrows;
+
+                border-bottom-style: none;
+            }
+
+            @at-root %notebook_vert_arrows {
+                margin-left: -5px;
+                margin-right: -5px;
+                padding-left: 4px;
+                padding-right: 4px;
+
+                &.down { -gtk-icon-source: -gtk-icontheme('pan-start-symbolic'); }
+
+                &.up { -gtk-icon-source: -gtk-icontheme('pan-end-symbolic'); }
+            }
+
+            &.left > tabs > arrow {
+                @extend %notebook_horz_arrows;
+
+                border-left-style: none;
+            }
+
+            &.right > tabs > arrow {
+                @extend %notebook_horz_arrows;
+
+                border-right-style: none;
+            }
+
+            @at-root %notebook_horz_arrows {
+                margin-top: -5px;
+                margin-bottom: -5px;
+                padding-top: 4px;
+                padding-bottom: 4px;
+
+                &.down { -gtk-icon-source: -gtk-icontheme('pan-up-symbolic'); }
+
+                &.up { -gtk-icon-source: -gtk-icontheme('pan-down-symbolic'); }
+            }
+
+            > tabs > arrow {
+                @extend %close_button;
+
+                min-height: 16px;
+                min-width: 16px;
+
+                &:hover:not(:active):not(:backdrop) {
+                    background-clip: padding-box;
+                    background-image: none;
+                    background-color: transparentize(white, 0.7);
+                    border-color: transparent;
+                    box-shadow: none;
+                }
+
+                &:disabled { @extend %undecorated_button; }
+            }
+
+            tab {
+                padding: ($spacing + 1) 0 0; // top | left/right | bottom
+                border-style: solid;
+                border-color: shade($bg_color, .8);
+                border-width: 0px;
+                background-color: mix($bg_color, $base_color, .6);
+                background-image: none;
+                box-shadow: none;
+                outline: none;
+
+                button, button:hover {
+                    padding: $spacing - 4;
+                    margin-left: 15px;
+                    min-height: 18px;
+                    min-width: 18px;
+                    opacity: 0;
+                    transition: opacity .3s ease-in;
+                }
+
+                > box, > label {
+                    padding: 0 ($spacing * 3) ($spacing + 1); // top | left/right | bottom
+                    border-width: 2px;
+                    border-style: solid;
+                    border-color: transparent;
+                    transition: border-bottom-color .3s ease-out;
+                }
+
+                &:hover {
+                    background-color: shade($base_color, .93);
+
+                    button, button:hover {
+                        opacity: 1;
+                    }
+
+                    &:checked {
+                        background-color: mix($bg_color, $base_color, .6);
+                    }
+                }
+
+                &:checked {
+                    border-bottom-color: transparent;
+                    outline: none;
+
+                    label {
+                        color: $selected_bg_color;
+                    }
+
+                    &:hover {
+                        background-color: mix($bg_color, $base_color, .6);
+                    }
+                }
+
+                label {
+                    color: mix($text_color, $base_color, .3);
+                }
+
+                /* close button styling */
+                button {
+                    @extend %close_button;
+                }
+            }
+
+            &.top tab {
+                padding: ($spacing + 1) 0 0; // top | left/right | bottom
+                border-style: solid;
+                border-color: shade($bg_color, .8);
+                border-width: 0px;
+                border-bottom-width: 1px;
+
+                > box, > label {
+                    padding: 0 ($spacing * 3) ($spacing + 1); // top | left/right | bottom
+                }
+
+                &:checked {
+                    border-bottom-color: transparent;
+                    outline: none;
+
+                    > box, > label {
+                        border-bottom-color: $selected_bg_color;
+                    }
+
+                    label {
+                        margin-bottom: -1px;
+                        color: $selected_bg_color;
+                    }
+
+                    &:hover {
+                        background-color: mix($bg_color, $base_color, .6);
+                    }
+                }
+            }
+
+            &.right tab {
+                padding: 0 ($spacing + 1) 0 0; // top | right | bottom | left
+                border-style: solid;
+                border-color: shade($bg_color, .8);
+                border-width: 0px;
+                border-left-width: 1px;
+
+                > box, > label {
+                    padding: ($spacing + 1) ($spacing * 3); // top | right | bottom | left
+                }
+
+                &:checked {
+                    border-left-color: transparent;
+                    outline: none;
+
+                    > box, > label {
+                        margin-left: -1px;
+                        border-left-color: $selected_bg_color;
+                    }
+                }
+            }
+
+
+            &.bottom tab {
+                padding: 0 0 ($spacing + 1); // top | left/right | bottom
+                border-style: solid;
+                border-color: shade($bg_color, .8);
+                border-width: 0px;
+                border-top-width: 1px;
+
+                > box, > label {
+                    padding: ($spacing + 1) ($spacing * 3) 0;  // top/bottom | left/right
+                }
+
+                &:checked {
+                    border-top-color: transparent;
+                    outline: none;
+
+                    > box, > label {
+                        margin-top: -1px;
+                        border-top-color: $selected_bg_color;
+                    }
+                }
+            }
+
+            &.left tab {
+                padding: 0 0 0 ($spacing + 1); // top | right | bottom | left
+                border-style: solid;
+                border-color: shade($bg_color, .8);
+                border-width: 0px;
+                border-right-width: 1px;
+
+                > box, > label {
+                    padding: ($spacing + 1) ($spacing * 3); // top/bottom | left/right
+                }
+
+                &:checked {
+                    border-right-color: transparent;
+                    outline: none;
+
+                    > box, > label {
+                        margin-right: -1px;
+                        border-right-color: $selected_bg_color;
+                    }
+                }
             }
         }
 
@@ -40,82 +265,5 @@
             background-color: $base_color;
             color: $text_color;
         }
-
-        tab {
-            padding: ($spacing + 1) ($spacing * 2);
-            border: 1px solid transparent;
-            background-color: transparent;
-            background-image: none;
-
-            &:hover {
-                background-color: shade($base_color, .95);
-                border-color: shade($base_color, .8);
-            }
-
-            &:checked {
-                background-color: $base_color;
-                background-image: none;
-                border-color: shade($base_color, .85);
-
-                label { color: $text_color; }
-            }
-
-            &.top {
-                border-bottom-width: 0;
-                border-bottom-right-radius: 0;
-                border-bottom-left-radius: 0;
-            }
-
-            &.right {
-                border-left-width: 0;
-                border-bottom-left-radius: 0;
-                border-top-left-radius: 0;
-            }
-
-
-            &.bottom {
-                border-top-width: 0;
-                border-top-right-radius: 0;
-                border-top-left-radius: 0;
-            }
-
-            &.left {
-                border-right-width: 0;
-                border-top-right-radius: 0;
-                border-bottom-right-radius: 0;
-            }
-
-            label { color: mix($text_color, $base_color, .3); }
-
-            /* close button styling */
-            button { @extend %close_button; }
-        }
-
-        .prelight-page {
-            &, label { color: mix($text_color, $base_color, .15); }
-        }
-
-        .active-page {
-            &, label { color: $text_color; }
-        }
-
-        .reorderable-page {
-            &:hover {
-                background-color: shade($base_color, .85);
-                border-left: 0;
-                border-right: 0;
-                /* using box shadows instead of borders due to slanted edges */
-                box-shadow: inset 0 3px alpha($black, .03), inset 0 2px alpha($black, .03), inset 0 1px alpha($black, .03),
-                            inset 1px 0 shade($base_color, .7), inset -1px 0 shade($base_color, .7);
-            }
-
-            &:checked {
-                background-color: shade($base_color, .9);
-                border-left: 0;
-                border-right: 0;
-                box-shadow: inset 0 3px alpha($black, .03), inset 0 2px alpha($black, .03), inset 0 1px alpha($black, .03),
-                            inset 1px 0 shade($base_color, .75), inset -1px 0 shade($base_color, .75);
-            }
-        }
     }
 }