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Eudaimon 2022-04-13 20:49:36 +02:00
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211
source/common/buttons.scss Normal file
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//auxiliary functions for buttons first
$_default_button_c: $button_bg;
@function _border_color($c, $darker: false) {
@if $darker == true { @return darken($c, 20%); }
@else { @return darken($c, 10%); }
}
@function _text_shadow_color ($tc: $fg_color, $bg: $bg_color) {
//
// calculate the color of text shadows
//
// $tc is the text color
// $bg is the background color
//
$_lbg: lightness($bg)/100%;
@if lightness($tc)<50% { @return transparentize(white, 1-$_lbg/($_lbg*1.3)); }
@else { @return transparentize(black, $_lbg*0.8); }
}
@function _button_hilight_color($c) {
//
// calculate the right top hilight color for buttons
//
// $c: base color;
//
@if lightness($c)>95% { @return white; }
@else if lightness($c)>90% { @return transparentize(white, 0.15); }
@else if lightness($c)>80% { @return transparentize(white, 0.35); }
@else if lightness($c)>50% { @return transparentize(white, 0.5); }
@else if lightness($c)>40% { @return transparentize(white, 0.65); }
@else { @return transparentize(white, 0.7); }
//@return $top_hilight;
}
@mixin _button_text_shadow ($tc:$fg_color, $bg:$bg_color) {
//
// helper function for the text emboss effect
//
// $tc is the optional text color, not the shadow color
//
// TODO: this functions needs a way to deal with special cases
//
$_shadow: _text_shadow_color($tc, $bg);
@if lightness($tc)<50% {
text-shadow: 0 1px _button_hilight_color($tc);//$_shadow;
-gtk-icon-shadow: 0 1px _button_hilight_color($tc);//$_shadow;
}
@else {
text-shadow: 0 -1px $_shadow;
-gtk-icon-shadow: 0 -1px $_shadow;
}
}
@mixin button($t, $c:$button_bg, $tc:$button_fg, $edge: none, $backimage: null) {
//
// Button drawing function
//
// $t: button type,
// $c: base button color for colored* types
// $tc: optional text color for colored* types
// $edge: set to none to not draw the bottom edge or specify a color to not
// use the default one
// $backimage: additional background-image behind the default one
// (for the button.circular hack)
//
// possible $t values (gtk3):
// normal, hover, active, insensitive, insensitive-active,
// backdrop, backdrop-active, backdrop-insensitive, backdrop-insensitive-active,
// osd, osd-hover, osd-active, osd-insensitive, osd-backdrop, undecorated
// possible $t values (gtk4):
// normal, hover, active, checked-hover, checked-active, insensitive, insensitive-active,
// backdrop, backdrop-active, backdrop-insensitive, backdrop-insensitive-active,
// osd, osd-hover, osd-active, osd-insensitive, osd-backdrop, undecorated
// this mixin needs to cover both gtk3 and gtk4 cases in order to work.
// gtk4 mixin calls only include $t, $c and $tc, therefore it should be safe to use in both.
//TODO: gtk3 add cases in common.scss to separate active from checked-active
$_hilight_color: _button_hilight_color($c);
$_button_edge: if($edge == none, none, _widget_edge($edge));
$_blank_edge: if($edge == none, none, _widget_edge(transparentize($edge,1)));
$_button_shadow: 0 1px 2px transparentize($shadow_hard_color, 0.6);
$button_clickable_image: linear-gradient(
to bottom,
transparentize($_hilight_color, if($variant == 'light', 0.2 ,0.3 )),
transparentize($_hilight_color, 1) 50%,
transparentize($shadow_hard_color, 1) 50%,
transparentize($shadow_hard_color, if($variant == 'light',0.85,0.7)) );
@if $t==normal or $t==normal-alt {
//
// normal button
//
color: $tc;
background-color: $c;
outline-color: $focus_border_color;
background-image: $button_clickable_image;
@include _button_text_shadow($tc, $c);
@include _shadows(inset 0 1px $_hilight_color, $_button_edge, $_button_shadow);
}
@else if $t==hover or $t==hover-alt or $t==undecorated-hover {
//
// hovered button
//
background-color: shade($c, 1.1)
}
@else if ($t==active) {
//
// pushed button
//
//color: $button_checked_fg;
//background-color: $button_checked_bg;
@include _shadows(0 1px $_hilight_color, $_button_edge, inset $_button_shadow);
}
@else if ($t==checked-active ) {
//
// pushed and toggled button
//
color: $button_checked_fg;
background-color: $button_checked_bg;
@include _button_text_shadow($button_checked_fg, $button_checked_bg);
@include _shadows(0 1px $_hilight_color, $_button_edge, inset $_button_shadow);
}
@else if ($t==checked-hover) {
//
// toggled button and hover
//
color: $button_checked_fg;
background-color: shade($button_checked_bg, 1.1);
@include _button_text_shadow($button_checked_fg, $button_checked_bg);
@include _shadows(0 1px $_hilight_color, $_button_edge, inset $_button_shadow);
}
@else if $t==insensitive {
//
// insensitive button
//
color: $insensitive_fg_color;
background-color: $insensitive_bg_color;
background-image: if($backimage==null, none, $backimage);
}
@else if $t==insensitive-active {
//
// insensitive pushed button
//
color: $insensitive_fg_color;
background-color: mix($insensitive_bg_color, $button_checked_bg, 85%);
}
@else if $t==backdrop {
//
// backdrop button
//
background-image: if($backimage==null, none, $backimage);
}
@else if $t==backdrop-active {
//
// backdrop pushed button
//
}
@else if $t==backdrop-insensitive {
//
// backdrop insensitive button
//
}
@else if $t==backdrop-insensitive-active {
//
// backdrop insensitive pushed button
//
}
//TODO: what happens with OSDs? Is it necessary to redefine them?
@else if $t==undecorated {
//
// reset
//
border-color: transparent;
background-color: transparent;
background-image: none;
@include _shadows(inset 0 1px transparentize(white, 1), $_blank_edge);
text-shadow: none;
-gtk-icon-shadow: none;
}
}