Mirrors/servo
1
0
Fork 0
mirror of https://github.com/servo/servo.git synced 2025-08-07 06:25:32 +01:00
Code Issues Projects Releases Packages Wiki Activity

Implement clone_content method

Browse source
This commit is contained in:
Daisuke Akatsuka 2017-08-14 17:20:19 +09:00
parent e0b834033d
commit c05baa2327
3 changed files with 93 additions and 15 deletions
Download patch file Download diff file Expand all files Collapse all files

21
components/style/gecko/media_queries.rs
View file

@ -14,7 +14,7 @@ use font_metrics::get_metrics_provider_for_product;
use gecko::values::convert_nscolor_to_rgba;
use gecko_bindings::bindings;
use gecko_bindings::structs;
use gecko_bindings::structs::{nsCSSKeyword, nsCSSProps_KTableEntry, nsCSSValue, nsCSSUnit, nsStringBuffer};
use gecko_bindings::structs::{nsCSSKeyword, nsCSSProps_KTableEntry, nsCSSValue, nsCSSUnit};
use gecko_bindings::structs::{nsMediaExpression_Range, nsMediaFeature};
use gecko_bindings::structs::{nsMediaFeature_ValueType, nsMediaFeature_RangeType, nsMediaFeature_RequirementFlags};
use gecko_bindings::structs::{nsPresContext, RawGeckoPresContextOwned};
@ -294,19 +294,6 @@ impl ToCss for Resolution {
}
}
unsafe fn string_from_ns_string_buffer(buffer: *const nsStringBuffer) -> String {
use std::slice;
debug_assert!(!buffer.is_null());
let data = buffer.offset(1) as *const u16;
let mut length = 0;
let mut iter = data;
while *iter != 0 {
length += 1;
iter = iter.offset(1);
}
String::from_utf16_lossy(slice::from_raw_parts(data, length))
}
/// A value found or expected in a media expression.
#[derive(PartialEq, Debug, Clone)]
pub enum MediaExpressionValue {
@ -334,6 +321,8 @@ pub enum MediaExpressionValue {
impl MediaExpressionValue {
fn from_css_value(for_expr: &Expression, css_value: &nsCSSValue) -> Option<Self> {
use gecko::conversions::string_from_chars_pointer;
// NB: If there's a null value, that means that we don't support the
// feature.
if css_value.mUnit == nsCSSUnit::eCSSUnit_Null {
@ -372,7 +361,9 @@ impl MediaExpressionValue {
nsMediaFeature_ValueType::eIdent => {
debug_assert!(css_value.mUnit == nsCSSUnit::eCSSUnit_Ident);
let string = unsafe {
string_from_ns_string_buffer(*css_value.mValue.mString.as_ref())
let buffer = *css_value.mValue.mString.as_ref();
debug_assert!(!buffer.is_null());
string_from_chars_pointer(buffer.offset(1) as *const u16)
};
Some(MediaExpressionValue::Ident(string))
}