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diff --git a/common/gtk-3.0/3.16/_drawing.scss b/common/gtk-3.0/3.16/_drawing.scss
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+// Drawing mixins
+
+// generic drawing of more complex things
+
+@mixin _shadows($shadow1, $shadow2:none, $shadow3:none, $shadow4:none) {
+//
+// Helper function to stack up to 4 box-shadows;
+//
+
+ @if $shadow4!=none { box-shadow: $shadow1, $shadow2, $shadow3, $shadow4; }
+ @else if $shadow3!=none { box-shadow: $shadow1, $shadow2, $shadow3; }
+ @else if $shadow2!=none { box-shadow: $shadow1, $shadow2; }
+ @else { box-shadow: $shadow1; }
+}
+
+// Entries
+
+@mixin entry($t) {
+//
+// Entries drawing function
+//
+// $t: entry type
+//
+
+ @if $t==normal {
+ //
+ // normal entry
+ //
+ color: $text_color;
+ border-color: $entry_border;
+ background-color: $entry_bg;
+ background-image: linear-gradient(to bottom, $entry_bg);
+ }
+
+ @if $t==focus {
+ //
+ // focused entry
+ //
+ color: $text_color;
+ border-color: $selected_bg_color;
+ background-color: $entry_bg;
+ background-image: linear-gradient(to bottom, $entry_bg);
+ }
+
+ @if $t==insensitive {
+ //
+ // insensitive entry
+ //
+ color: $insensitive_fg_color;
+ border-color: transparentize($entry_border, 0.45);
+ background-color: transparentize($entry_bg, 0.45);
+ background-image: linear-gradient(to bottom, transparentize($entry_bg, 0.45));
+ }
+
+ @if $t==header-normal {
+ //
+ // normal header-bar entry
+ //
+ color: $header_fg;
+ border-color: transparentize($header_fg, 0.7);
+ background-image: linear-gradient(to bottom, transparentize($base_color, 0.1));
+ background-color: transparent;
+
+ &.image, &.image:hover { color: inherit; }
+ }
+
+ @if $t==header-focus {
+ //
+ // focused header-bar entry
+ //
+ color: $selected_fg_color;
+ border-color: $selected_bg_color;
+ background-image: linear-gradient(to bottom, $selected_bg_color);
+ }
+
+ @if $t==header-insensitive {
+ //
+ // insensitive header-bar entry
+ //
+ color: transparentize($header_fg, 0.45);
+ background-image: linear-gradient(to bottom, transparentize($base_color, 0.45));
+ }
+
+ @if $t==osd {
+ color: $osd_text_color;
+ border-color: $osd_borders_color;
+ background-image: linear-gradient(to bottom, transparentize(opacify($osd_borders_color, 1), 0.5));
+ background-clip: padding-box;
+
+ text-shadow: 0 1px black;
+ icon-shadow: 0 1px black;
+ }
+
+ @if $t==osd-focus {
+ color: $osd_text_color;
+ border-color: $selected_bg_color;
+ background-image: linear-gradient(to bottom, transparentize(opacify($osd_borders_color, 1), 0.5));
+ background-clip: padding-box;
+
+ text-shadow: 0 1px black;
+ icon-shadow: 0 1px black;
+ }
+
+ @if $t==osd-insensitive {
+ color: $osd_insensitive_fg_color;
+ border-color: $osd_borders_color;
+ background-image: linear-gradient(to bottom, $osd_insensitive_bg_color);
+ background-clip: padding-box;
+
+ text-shadow: none;
+ icon-shadow: none;
+ }
+}
+
+// Buttons
+
+@mixin button($t) {
+//
+// Button drawing function
+//
+// $t: button type,
+//
+
+ @if $t==normal {
+ //
+ // normal button
+ //
+ color: $fg_color;
+ outline-color: transparentize($fg_color, 0.7);
+ border-color: $button_border;
+ background-color: $button_bg;
+ }
+
+ @else if $t==hover {
+ //
+ // hovered button
+ //
+ color: $fg_color;
+ outline-color: transparentize($fg_color, 0.7);
+ border-color: $selected_bg_color;
+ background-color: $button_bg;
+ }
+
+ @else if $t==active {
+ //
+ // pushed button
+ //
+ color: $selected_fg_color;
+ outline-color: transparentize($selected_fg_color, 0.7);
+ border-color: $selected_bg_color;
+ background-color: $selected_bg_color;
+ }
+
+ @else if $t==insensitive {
+ //
+ // insensitive button
+ //
+ color: $insensitive_fg_color;
+ border-color: transparentize($button_border, 0.45);
+ background-color: transparentize($button_bg, 0.45);
+
+ > GtkLabel { color: inherit; }
+ }
+
+ @else if $t==insensitive-active {
+ //
+ // insensitive pushed button
+ //
+ color: transparentize($selected_fg_color, 0.45);
+ border-color: transparentize($selected_bg_color, 0.45);
+ background-color: transparentize($selected_bg_color, 0.45);
+
+ opacity: 0.6;
+
+ > GtkLabel { color: inherit; }
+ }
+
+ @if $t==header-normal {
+ //
+ // normal header-bar button
+ //
+ color: $header_fg;
+ outline-color: transparentize($header_fg, 0.7);
+ outline-offset: -3px;
+ background-color: transparentize($header_bg, 1);
+ border-color: transparentize($header_bg, 1);
+ }
+
+ @else if $t==header-hover {
+ //
+ // hovered header-bar button
+ //
+ color: $header_fg;
+ outline-color: transparentize($header_fg, 0.7);
+ border-color: transparentize($header_fg, 0.7);
+ background-color: transparentize($button_bg, 0.1);
+ }
+
+ @else if $t==header-active {
+ //
+ // pushed header-bar button
+ //
+ color: $selected_fg_color;
+ outline-color: transparentize($selected_fg_color, 0.7);
+ border-color: $selected_bg_color;
+ background-color: $selected_bg_color;
+ }
+
+ @else if $t==header-insensitive {
+ //
+ // insensitive header-bar button
+ //
+ color: transparentize($header_fg, 0.45);
+ background-color: transparentize($header_bg, 1);
+ border-color: transparentize($header_bg, 1);
+
+ > GtkLabel { color: inherit; }
+ }
+
+ @else if $t==header-insensitive-active {
+ //
+ // header-bar insensitive pushed button
+ //
+ color: transparentize($selected_fg_color, 0.25);
+ border-color: transparentize($selected_bg_color, 0.35);
+ background-color: transparentize($selected_bg_color, 0.35);
+ }
+
+ @else if $t==osd {
+ //
+ // normal osd button
+ //
+ color: $osd_fg_color;
+ outline-color: transparentize($osd_fg_color, 0.7);
+ border-color: transparentize($osd_fg_color, 0.7);
+ background-color: transparent;
+ background-image: linear-gradient(to bottom, darken($osd_bg_color, 5%));
+ }
+
+ @else if $t==osd-hover {
+ //
+ // active osd button
+ //
+ color: $selected_bg_color;
+ outline-color: transparentize($osd_fg_color, 0.7);
+ border-color: $selected_bg_color;
+ background-image: linear-gradient(to bottom, darken($osd_bg_color, 5%));
+ }
+
+ @else if $t==osd-active {
+ //
+ // active osd button
+ //
+ color: $selected_fg_color;
+ outline-color: transparentize($selected_fg_color, 0.7);
+ border-color: $selected_bg_color;
+ background-image: linear-gradient(to bottom, $selected_bg_color);
+ }
+
+ @else if $t==osd-insensitive {
+ //
+ // insensitive osd button
+ //
+ color: $osd_insensitive_fg_color;
+ border-color: transparentize($osd_fg_color, 0.8);
+ background-image: linear-gradient(to bottom, $osd_insensitive_bg_color);
+ }
+
+ @else if $t==undecorated {
+ //
+ // reset
+ //
+ border-color: transparent;
+ background-color: transparent;
+ background-image: none;
+ }
+}
+
+//
+// Overshoot
+//
+@mixin overshoot($p, $c:$selected_bg_color) {
+// $p: position
+// $c: base color
+//
+// possible $p values:
+// top, bottom, right, left
+//
+
+ $_big_gradient_length: 60%;
+
+ $_position: center top;
+ $_big_gradient_size: 100% $_big_gradient_length;
+
+ @if $p==bottom {
+ $_position: center bottom;
+ }
+
+ @else if $p==right {
+ $_position: right center;
+ $_big_gradient_size: $_big_gradient_length 100%;
+ }
+
+ @else if $p==left {
+ $_position: left center;
+ $_big_gradient_size: $_big_gradient_length 100%;
+ }
+
+ background-image: -gtk-gradient(radial,
+ $_position, 0,
+ $_position, 0.6,
+ from(transparentize($c, 0.8)),
+ to(transparentize($c, 1)));
+
+ background-size: $_big_gradient_size;
+ background-repeat: no-repeat;
+ background-position: $_position;
+
+ background-color: transparent; // reset some properties to be sure to not inherit them somehow
+ border: none; //
+ box-shadow: none; //
+}
+
+//
+// Undershoot
+//
+@mixin undershoot($p) {
+// $p: position
+//
+// possible $p values:
+// top, bottom, right, left
+//
+
+ $_undershoot_color_dark: transparentize(black, 0.8);
+ $_undershoot_color_light: transparentize(white, 0.8);
+
+ $_gradient_dir: left;
+ $_dash_bg_size: 10px 1px;
+ $_gradient_repeat: repeat-x;
+ $_bg_pos: center $p;
+
+ background-color: transparent; // shouldn't be needed, but better to be sure;
+
+ @if ($p == left) or ($p == right) {
+ $_gradient_dir: top;
+ $_dash_bg_size: 1px 10px;
+ $_gradient_repeat: repeat-y;
+ $_bg_pos: $p center;
+ }
+
+ background-image: linear-gradient(to $_gradient_dir, // this is the dashed line
+ $_undershoot_color_light 50%,
+ $_undershoot_color_dark 50%);
+
+ padding-#{$p}: 1px;
+ background-size: $_dash_bg_size;
+ background-repeat: $_gradient_repeat;
+ background-origin: content-box;
+ background-position: $_bg_pos;
+}