mirror of
https://github.com/servo/servo.git
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1006 lines
42 KiB
Rust
1006 lines
42 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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// `data` comes from components/style/properties.mako.rs; see build.rs for more details.
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<%!
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from data import to_rust_ident
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from data import Keyword
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%>
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use app_units::Au;
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% for style_struct in data.style_structs:
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use gecko_bindings::structs::${style_struct.gecko_ffi_name};
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use gecko_bindings::bindings::Gecko_Construct_${style_struct.gecko_ffi_name};
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use gecko_bindings::bindings::Gecko_CopyConstruct_${style_struct.gecko_ffi_name};
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use gecko_bindings::bindings::Gecko_Destroy_${style_struct.gecko_ffi_name};
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% endfor
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use gecko_bindings::bindings::{Gecko_CopyMozBindingFrom, Gecko_CopyListStyleTypeFrom};
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use gecko_bindings::bindings::{Gecko_SetMozBinding, Gecko_SetListStyleType};
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use gecko_bindings::bindings::{Gecko_SetNullImageValue, Gecko_SetGradientImageValue};
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use gecko_bindings::bindings::{Gecko_CreateGradient};
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use gecko_bindings::bindings::{Gecko_CopyImageValueFrom, Gecko_CopyFontFamilyFrom};
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use gecko_bindings::bindings::{Gecko_FontFamilyList_AppendGeneric, Gecko_FontFamilyList_AppendNamed};
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use gecko_bindings::bindings::{Gecko_FontFamilyList_Clear};
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use gecko_bindings::structs;
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use glue::ArcHelpers;
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use std::fmt::{self, Debug};
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use std::mem::{transmute, uninitialized, zeroed};
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use std::sync::Arc;
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use std::cmp;
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use style::custom_properties::ComputedValuesMap;
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use style::logical_geometry::WritingMode;
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use style::properties::{CascadePropertyFn, ServoComputedValues, ComputedValues};
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use style::properties::longhands;
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use style::properties::make_cascade_vec;
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use style::properties::style_struct_traits::*;
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use values::{StyleCoordHelpers, ToGeckoStyleCoord, convert_nscolor_to_rgba};
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use values::{convert_rgba_to_nscolor, debug_assert_unit_is_safe_to_copy};
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use values::round_border_to_device_pixels;
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#[derive(Clone)]
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pub struct GeckoComputedValues {
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% for style_struct in data.style_structs:
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${style_struct.ident}: Arc<${style_struct.gecko_struct_name}>,
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% endfor
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custom_properties: Option<Arc<ComputedValuesMap>>,
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shareable: bool,
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pub writing_mode: WritingMode,
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pub root_font_size: Au,
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}
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impl GeckoComputedValues {
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pub fn inherit_from(parent: &Arc<Self>) -> Arc<Self> {
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Arc::new(GeckoComputedValues {
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custom_properties: parent.custom_properties.clone(),
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shareable: parent.shareable,
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writing_mode: parent.writing_mode,
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root_font_size: parent.root_font_size,
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% for style_struct in data.style_structs:
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% if style_struct.inherited:
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${style_struct.ident}: parent.${style_struct.ident}.clone(),
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% else:
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${style_struct.ident}: Self::initial_values().${style_struct.ident}.clone(),
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% endif
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% endfor
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})
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}
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}
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impl ComputedValues for GeckoComputedValues {
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% for style_struct in data.style_structs:
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type Concrete${style_struct.trait_name} = ${style_struct.gecko_struct_name};
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% endfor
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// These will go away, and we will never implement them.
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fn as_servo<'a>(&'a self) -> &'a ServoComputedValues { unimplemented!() }
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fn as_servo_mut<'a>(&'a mut self) -> &'a mut ServoComputedValues { unimplemented!() }
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fn new(custom_properties: Option<Arc<ComputedValuesMap>>,
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shareable: bool,
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writing_mode: WritingMode,
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root_font_size: Au,
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% for style_struct in data.style_structs:
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${style_struct.ident}: Arc<${style_struct.gecko_struct_name}>,
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% endfor
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) -> Self {
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GeckoComputedValues {
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custom_properties: custom_properties,
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shareable: shareable,
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writing_mode: writing_mode,
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root_font_size: root_font_size,
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% for style_struct in data.style_structs:
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${style_struct.ident}: ${style_struct.ident},
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% endfor
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}
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}
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fn style_for_child_text_node(parent: &Arc<Self>) -> Arc<Self> {
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// Gecko expects text nodes to be styled as if they were elements that
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// matched no rules (that is, inherited style structs are inherited and
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// non-inherited style structs are set to their initial values).
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GeckoComputedValues::inherit_from(parent)
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}
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fn initial_values() -> &'static Self { &*INITIAL_GECKO_VALUES }
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fn do_cascade_property<F: FnOnce(&Vec<Option<CascadePropertyFn<Self>>>)>(f: F) {
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CASCADE_PROPERTY.with(|x| f(x));
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}
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% for style_struct in data.style_structs:
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#[inline]
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fn clone_${style_struct.trait_name_lower}(&self) -> Arc<Self::Concrete${style_struct.trait_name}> {
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self.${style_struct.ident}.clone()
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}
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#[inline]
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fn get_${style_struct.trait_name_lower}<'a>(&'a self) -> &'a Self::Concrete${style_struct.trait_name} {
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&self.${style_struct.ident}
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}
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#[inline]
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fn mutate_${style_struct.trait_name_lower}<'a>(&'a mut self) -> &'a mut Self::Concrete${style_struct.trait_name} {
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Arc::make_mut(&mut self.${style_struct.ident})
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}
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% endfor
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fn custom_properties(&self) -> Option<Arc<ComputedValuesMap>> { self.custom_properties.as_ref().map(|x| x.clone())}
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fn root_font_size(&self) -> Au { self.root_font_size }
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fn set_root_font_size(&mut self, s: Au) { self.root_font_size = s; }
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fn set_writing_mode(&mut self, mode: WritingMode) { self.writing_mode = mode; }
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// FIXME(bholley): Implement this properly.
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#[inline]
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fn is_multicol(&self) -> bool { false }
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}
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<%def name="declare_style_struct(style_struct)">
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#[derive(HeapSizeOf)]
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pub struct ${style_struct.gecko_struct_name} {
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gecko: ${style_struct.gecko_ffi_name},
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}
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</%def>
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<%def name="impl_simple_setter(ident, gecko_ffi_name)">
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fn set_${ident}(&mut self, v: longhands::${ident}::computed_value::T) {
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${set_gecko_property(gecko_ffi_name, "v")}
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}
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</%def>
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<%def name="impl_simple_copy(ident, gecko_ffi_name)">
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fn copy_${ident}_from(&mut self, other: &Self) {
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self.gecko.${gecko_ffi_name} = other.gecko.${gecko_ffi_name};
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}
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</%def>
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<%def name="impl_coord_copy(ident, gecko_ffi_name)">
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fn copy_${ident}_from(&mut self, other: &Self) {
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self.gecko.${gecko_ffi_name}.copy_from(&other.gecko.${gecko_ffi_name});
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}
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</%def>
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<%!
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def is_border_style_masked(ffi_name):
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return ffi_name.split("[")[0] in ["mBorderStyle", "mOutlineStyle", "mTextDecorationStyle"]
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def get_gecko_property(ffi_name):
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if is_border_style_masked(ffi_name):
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return "(self.gecko.%s & (structs::BORDER_STYLE_MASK as u8))" % ffi_name
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return "self.gecko.%s" % ffi_name
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def set_gecko_property(ffi_name, expr):
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if is_border_style_masked(ffi_name):
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return "self.gecko.%s &= !(structs::BORDER_STYLE_MASK as u8);" % ffi_name + \
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"self.gecko.%s |= %s as u8;" % (ffi_name, expr)
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elif ffi_name == "__LIST_STYLE_TYPE__":
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return "unsafe { Gecko_SetListStyleType(&mut self.gecko, %s as u32); }" % expr
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return "self.gecko.%s = %s;" % (ffi_name, expr)
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%>
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<%def name="impl_keyword_setter(ident, gecko_ffi_name, keyword)">
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fn set_${ident}(&mut self, v: longhands::${ident}::computed_value::T) {
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use style::properties::longhands::${ident}::computed_value::T as Keyword;
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// FIXME(bholley): Align binary representations and ditch |match| for cast + static_asserts
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let result = match v {
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% for value in keyword.values_for('gecko'):
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Keyword::${to_rust_ident(value)} => structs::${keyword.gecko_constant(value)} as u8,
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% endfor
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};
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${set_gecko_property(gecko_ffi_name, "result")}
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}
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</%def>
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<%def name="impl_keyword_clone(ident, gecko_ffi_name, keyword)">
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fn clone_${ident}(&self) -> longhands::${ident}::computed_value::T {
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use style::properties::longhands::${ident}::computed_value::T as Keyword;
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// FIXME(bholley): Align binary representations and ditch |match| for cast + static_asserts
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match ${get_gecko_property(gecko_ffi_name)} as u32 {
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% for value in keyword.values_for('gecko'):
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structs::${keyword.gecko_constant(value)} => Keyword::${to_rust_ident(value)},
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% endfor
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x => panic!("Found unexpected value in style struct for ${ident} property: {}", x),
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}
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}
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</%def>
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<%def name="clear_color_flags(color_flags_ffi_name)">
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% if color_flags_ffi_name:
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self.gecko.${color_flags_ffi_name} &= !(structs::BORDER_COLOR_SPECIAL as u8);
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% endif
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</%def>
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<%def name="set_current_color_flag(color_flags_ffi_name)">
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% if color_flags_ffi_name:
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self.gecko.${color_flags_ffi_name} |= structs::BORDER_COLOR_FOREGROUND as u8;
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% else:
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// FIXME(heycam): This is a Gecko property that doesn't store currentColor
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// as a computed value. These are currently handled by converting
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// currentColor to the current value of the color property at computed
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// value time, but we don't have access to the Color struct here.
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// In the longer term, Gecko should store currentColor as a computed
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// value, so that we don't need to do this:
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// https://bugzilla.mozilla.org/show_bug.cgi?id=760345
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unimplemented!();
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% endif
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</%def>
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<%def name="get_current_color_flag_from(field)">
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(${field} & (structs::BORDER_COLOR_FOREGROUND as u8)) != 0
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</%def>
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<%def name="impl_color_setter(ident, gecko_ffi_name, color_flags_ffi_name=None)">
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#[allow(unreachable_code)]
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fn set_${ident}(&mut self, v: longhands::${ident}::computed_value::T) {
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use cssparser::Color;
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${clear_color_flags(color_flags_ffi_name)}
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let result = match v {
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Color::CurrentColor => {
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${set_current_color_flag(color_flags_ffi_name)}
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0
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},
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Color::RGBA(rgba) => convert_rgba_to_nscolor(&rgba),
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};
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${set_gecko_property(gecko_ffi_name, "result")}
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}
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</%def>
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<%def name="impl_color_copy(ident, gecko_ffi_name, color_flags_ffi_name=None)">
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fn copy_${ident}_from(&mut self, other: &Self) {
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% if color_flags_ffi_name:
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${clear_color_flags(color_flags_ffi_name)}
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if ${get_current_color_flag_from("other.gecko." + color_flags_ffi_name)} {
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${set_current_color_flag(color_flags_ffi_name)}
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}
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% endif
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self.gecko.${gecko_ffi_name} = other.gecko.${gecko_ffi_name};
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}
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</%def>
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<%def name="impl_keyword(ident, gecko_ffi_name, keyword, need_clone)">
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<%call expr="impl_keyword_setter(ident, gecko_ffi_name, keyword)"></%call>
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<%call expr="impl_simple_copy(ident, gecko_ffi_name)"></%call>
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%if need_clone:
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<%call expr="impl_keyword_clone(ident, gecko_ffi_name, keyword)"></%call>
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% endif
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</%def>
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<%def name="impl_simple(ident, gecko_ffi_name)">
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<%call expr="impl_simple_setter(ident, gecko_ffi_name)"></%call>
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<%call expr="impl_simple_copy(ident, gecko_ffi_name)"></%call>
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</%def>
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<%def name="impl_color(ident, gecko_ffi_name, color_flags_ffi_name=None)">
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<%call expr="impl_color_setter(ident, gecko_ffi_name, color_flags_ffi_name)"></%call>
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<%call expr="impl_color_copy(ident, gecko_ffi_name, color_flags_ffi_name)"></%call>
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</%def>
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<%def name="impl_app_units(ident, gecko_ffi_name, need_clone, round_to_pixels=False)">
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fn set_${ident}(&mut self, v: longhands::${ident}::computed_value::T) {
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% if round_to_pixels:
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let au_per_device_px = Au(self.gecko.mTwipsPerPixel);
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self.gecko.${gecko_ffi_name} = round_border_to_device_pixels(v, au_per_device_px).0;
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% else:
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self.gecko.${gecko_ffi_name} = v.0;
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% endif
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}
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<%call expr="impl_simple_copy(ident, gecko_ffi_name)"></%call>
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%if need_clone:
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fn clone_${ident}(&self) -> longhands::${ident}::computed_value::T {
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Au(self.gecko.${gecko_ffi_name})
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}
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% endif
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</%def>
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<%def name="impl_split_style_coord(ident, unit_ffi_name, union_ffi_name)">
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fn set_${ident}(&mut self, v: longhands::${ident}::computed_value::T) {
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v.to_gecko_style_coord(&mut self.gecko.${unit_ffi_name},
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&mut self.gecko.${union_ffi_name});
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}
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fn copy_${ident}_from(&mut self, other: &Self) {
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debug_assert_unit_is_safe_to_copy(self.gecko.${unit_ffi_name});
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self.gecko.${unit_ffi_name} = other.gecko.${unit_ffi_name};
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self.gecko.${union_ffi_name} = other.gecko.${union_ffi_name};
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}
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</%def>
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<%def name="impl_style_coord(ident, gecko_ffi_name)">
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<%call expr="impl_split_style_coord(ident, '%s.mUnit' % gecko_ffi_name, '%s.mValue' % gecko_ffi_name)"></%call>
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</%def>
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<%def name="impl_corner_style_coord(ident, x_unit_ffi_name, x_union_ffi_name, y_unit_ffi_name, y_union_ffi_name)">
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fn set_${ident}(&mut self, v: longhands::${ident}::computed_value::T) {
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v.0.width.to_gecko_style_coord(&mut self.gecko.${x_unit_ffi_name},
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&mut self.gecko.${x_union_ffi_name});
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v.0.height.to_gecko_style_coord(&mut self.gecko.${y_unit_ffi_name},
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&mut self.gecko.${y_union_ffi_name});
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}
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fn copy_${ident}_from(&mut self, other: &Self) {
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debug_assert_unit_is_safe_to_copy(self.gecko.${x_unit_ffi_name});
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debug_assert_unit_is_safe_to_copy(self.gecko.${y_unit_ffi_name});
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self.gecko.${x_unit_ffi_name} = other.gecko.${x_unit_ffi_name};
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self.gecko.${x_union_ffi_name} = other.gecko.${x_union_ffi_name};
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self.gecko.${y_unit_ffi_name} = other.gecko.${y_unit_ffi_name};
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self.gecko.${y_union_ffi_name} = other.gecko.${y_union_ffi_name};
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}
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</%def>
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<%def name="impl_style_struct(style_struct)">
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impl ${style_struct.gecko_struct_name} {
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#[allow(dead_code, unused_variables)]
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fn initial() -> Arc<Self> {
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let mut result = Arc::new(${style_struct.gecko_struct_name} { gecko: unsafe { zeroed() } });
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unsafe {
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Gecko_Construct_${style_struct.gecko_ffi_name}(&mut Arc::make_mut(&mut result).gecko);
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}
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result
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}
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pub fn get_gecko(&self) -> &${style_struct.gecko_ffi_name} {
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&self.gecko
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}
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}
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impl Drop for ${style_struct.gecko_struct_name} {
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fn drop(&mut self) {
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unsafe {
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Gecko_Destroy_${style_struct.gecko_ffi_name}(&mut self.gecko);
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}
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}
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}
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impl Clone for ${style_struct.gecko_struct_name} {
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fn clone(&self) -> Self {
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unsafe {
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let mut result = ${style_struct.gecko_struct_name} { gecko: zeroed() };
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Gecko_CopyConstruct_${style_struct.gecko_ffi_name}(&mut result.gecko, &self.gecko);
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result
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}
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}
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}
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// FIXME(bholley): Make bindgen generate Debug for all types.
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%if style_struct.gecko_ffi_name in "nsStyleBorder nsStyleDisplay nsStyleList nsStyleBackground "\
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"nsStyleFont nsStyleSVGReset".split():
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impl Debug for ${style_struct.gecko_struct_name} {
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// FIXME(bholley): Generate this.
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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write!(f, "GECKO STYLE STRUCT")
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}
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}
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%else:
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impl Debug for ${style_struct.gecko_struct_name} {
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// FIXME(bholley): Generate this.
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { self.gecko.fmt(f) }
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}
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%endif
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</%def>
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<%def name="raw_impl_trait(style_struct, skip_longhands='', skip_additionals='')">
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<%
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longhands = [x for x in style_struct.longhands
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if not (skip_longhands == "*" or x.name in skip_longhands.split())]
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#
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# Make a list of types we can't auto-generate.
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#
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force_stub = [];
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# These are currently being shuffled to a different style struct on the gecko side.
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force_stub += ["backface-visibility", "transform-box", "transform-style"]
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# These live in nsStyleImageLayers in gecko. Need to figure out what to do about that.
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force_stub += ["background-attachment", "background-clip", "background-origin"];
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# These live in an nsFont member in Gecko. Should be straightforward to do manually.
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force_stub += ["font-kerning", "font-stretch", "font-variant"]
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# These have unusual representations in gecko.
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force_stub += ["list-style-type", "text-overflow"]
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# Enum class instead of NS_STYLE_...
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force_stub += ["box-sizing"]
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# These are booleans.
|
|
force_stub += ["page-break-after", "page-break-before"]
|
|
|
|
# Types used with predefined_type()-defined properties that we can auto-generate.
|
|
predefined_types = {
|
|
"LengthOrPercentage": impl_style_coord,
|
|
"LengthOrPercentageOrAuto": impl_style_coord,
|
|
"LengthOrPercentageOrNone": impl_style_coord,
|
|
"Number": impl_simple,
|
|
"Opacity": impl_simple,
|
|
}
|
|
|
|
keyword_longhands = [x for x in longhands if x.keyword and not x.name in force_stub]
|
|
predefined_longhands = [x for x in longhands
|
|
if x.predefined_type in predefined_types and not x.name in force_stub]
|
|
stub_longhands = [x for x in longhands if x not in keyword_longhands + predefined_longhands]
|
|
%>
|
|
impl ${style_struct.trait_name} for ${style_struct.gecko_struct_name} {
|
|
/*
|
|
* Manually-Implemented Methods.
|
|
*/
|
|
${caller.body().strip()}
|
|
|
|
/*
|
|
* Auto-Generated Methods.
|
|
*/
|
|
<%
|
|
for longhand in keyword_longhands:
|
|
impl_keyword(longhand.ident, longhand.gecko_ffi_name, longhand.keyword, longhand.need_clone)
|
|
for longhand in predefined_longhands:
|
|
impl_fn = predefined_types[longhand.predefined_type]
|
|
impl_fn(longhand.ident, longhand.gecko_ffi_name)
|
|
%>
|
|
|
|
/*
|
|
* Stubs.
|
|
*/
|
|
% for longhand in stub_longhands:
|
|
fn set_${longhand.ident}(&mut self, _: longhands::${longhand.ident}::computed_value::T) {
|
|
if cfg!(debug_assertions) {
|
|
println!("stylo: Unimplemented property setter: ${longhand.name}");
|
|
}
|
|
}
|
|
fn copy_${longhand.ident}_from(&mut self, _: &Self) {
|
|
if cfg!(debug_assertions) {
|
|
println!("stylo: Unimplemented property setter: ${longhand.name}");
|
|
}
|
|
}
|
|
% if longhand.need_clone:
|
|
fn clone_${longhand.ident}(&self) -> longhands::${longhand.ident}::computed_value::T {
|
|
unimplemented!()
|
|
}
|
|
% endif
|
|
% endfor
|
|
<% additionals = [x for x in style_struct.additional_methods
|
|
if skip_additionals != "*" and not x.name in skip_additionals.split()] %>
|
|
% for additional in additionals:
|
|
${additional.stub()}
|
|
% endfor
|
|
}
|
|
</%def>
|
|
|
|
<% data.manual_style_structs = [] %>
|
|
<%def name="impl_trait(style_struct_name, skip_longhands='', skip_additionals='')">
|
|
<%self:raw_impl_trait style_struct="${next(x for x in data.style_structs if x.trait_name == style_struct_name)}"
|
|
skip_longhands="${skip_longhands}" skip_additionals="${skip_additionals}">
|
|
${caller.body()}
|
|
</%self:raw_impl_trait>
|
|
<% data.manual_style_structs.append(style_struct_name) %>
|
|
</%def>
|
|
|
|
<%!
|
|
class Side(object):
|
|
def __init__(self, name, index):
|
|
self.name = name
|
|
self.ident = name.lower()
|
|
self.index = index
|
|
|
|
class Corner(object):
|
|
def __init__(self, name, index):
|
|
self.x_name = "NS_CORNER_" + name + "_X"
|
|
self.y_name = "NS_CORNER_" + name + "_Y"
|
|
self.ident = name.lower()
|
|
self.x_index = 2 * index
|
|
self.y_index = 2 * index + 1
|
|
|
|
SIDES = [Side("Top", 0), Side("Right", 1), Side("Bottom", 2), Side("Left", 3)]
|
|
CORNERS = [Corner("TOP_LEFT", 0), Corner("TOP_RIGHT", 1), Corner("BOTTOM_RIGHT", 2), Corner("BOTTOM_LEFT", 3)]
|
|
%>
|
|
|
|
#[allow(dead_code)]
|
|
fn static_assert() {
|
|
unsafe {
|
|
% for corner in CORNERS:
|
|
transmute::<_, [u32; ${corner.x_index}]>([1; structs::${corner.x_name} as usize]);
|
|
transmute::<_, [u32; ${corner.y_index}]>([1; structs::${corner.y_name} as usize]);
|
|
% endfor
|
|
}
|
|
// Note: using the above technique with an enum hits a rust bug when |structs| is in a different crate.
|
|
% for side in SIDES:
|
|
{ const DETAIL: u32 = [0][(structs::Side::eSide${side.name} as usize != ${side.index}) as usize]; let _ = DETAIL; }
|
|
% endfor
|
|
}
|
|
|
|
|
|
<% border_style_keyword = Keyword("border-style",
|
|
"none solid double dotted dashed hidden groove ridge inset outset") %>
|
|
|
|
<% skip_border_longhands = " ".join(["border-{0}-{1}".format(x.ident, y)
|
|
for x in SIDES
|
|
for y in ["color", "style", "width"]] +
|
|
["border-{0}-radius".format(x.ident.replace("_", "-"))
|
|
for x in CORNERS]) %>
|
|
<%self:impl_trait style_struct_name="Border"
|
|
skip_longhands="${skip_border_longhands}"
|
|
skip_additionals="*">
|
|
|
|
% for side in SIDES:
|
|
<% impl_keyword("border_%s_style" % side.ident, "mBorderStyle[%s]" % side.index, border_style_keyword,
|
|
need_clone=True) %>
|
|
|
|
<% impl_color("border_%s_color" % side.ident, "mBorderColor[%s]" % side.index,
|
|
color_flags_ffi_name="mBorderStyle[%s]" % side.index) %>
|
|
|
|
<% impl_app_units("border_%s_width" % side.ident, "mComputedBorder.%s" % side.ident, need_clone=False,
|
|
round_to_pixels=True) %>
|
|
|
|
fn border_${side.ident}_has_nonzero_width(&self) -> bool {
|
|
self.gecko.mComputedBorder.${side.ident} != 0
|
|
}
|
|
% endfor
|
|
|
|
% for corner in CORNERS:
|
|
<% impl_corner_style_coord("border_%s_radius" % corner.ident,
|
|
"mBorderRadius.mUnits[%s]" % corner.x_index,
|
|
"mBorderRadius.mValues[%s]" % corner.x_index,
|
|
"mBorderRadius.mUnits[%s]" % corner.y_index,
|
|
"mBorderRadius.mValues[%s]" % corner.y_index) %>
|
|
% endfor
|
|
</%self:impl_trait>
|
|
|
|
<% skip_margin_longhands = " ".join(["margin-%s" % x.ident for x in SIDES]) %>
|
|
<%self:impl_trait style_struct_name="Margin"
|
|
skip_longhands="${skip_margin_longhands}">
|
|
|
|
% for side in SIDES:
|
|
<% impl_split_style_coord("margin_%s" % side.ident,
|
|
"mMargin.mUnits[%s]" % side.index,
|
|
"mMargin.mValues[%s]" % side.index) %>
|
|
% endfor
|
|
</%self:impl_trait>
|
|
|
|
<% skip_padding_longhands = " ".join(["padding-%s" % x.ident for x in SIDES]) %>
|
|
<%self:impl_trait style_struct_name="Padding"
|
|
skip_longhands="${skip_padding_longhands}">
|
|
|
|
% for side in SIDES:
|
|
<% impl_split_style_coord("padding_%s" % side.ident,
|
|
"mPadding.mUnits[%s]" % side.index,
|
|
"mPadding.mValues[%s]" % side.index) %>
|
|
% endfor
|
|
</%self:impl_trait>
|
|
|
|
<% skip_position_longhands = " ".join(x.ident for x in SIDES) %>
|
|
<%self:impl_trait style_struct_name="Position"
|
|
skip_longhands="${skip_position_longhands} z-index">
|
|
|
|
% for side in SIDES:
|
|
<% impl_split_style_coord("%s" % side.ident,
|
|
"mOffset.mUnits[%s]" % side.index,
|
|
"mOffset.mValues[%s]" % side.index) %>
|
|
% endfor
|
|
|
|
fn set_z_index(&mut self, v: longhands::z_index::computed_value::T) {
|
|
use style::properties::longhands::z_index::computed_value::T;
|
|
match v {
|
|
T::Auto => self.gecko.mZIndex.set_auto(),
|
|
T::Number(n) => self.gecko.mZIndex.set_int(n),
|
|
}
|
|
}
|
|
fn copy_z_index_from(&mut self, other: &Self) {
|
|
debug_assert_unit_is_safe_to_copy(self.gecko.mZIndex.mUnit);
|
|
self.gecko.mZIndex.mUnit = other.gecko.mZIndex.mUnit;
|
|
self.gecko.mZIndex.mValue = other.gecko.mZIndex.mValue;
|
|
}
|
|
</%self:impl_trait>
|
|
|
|
<% skip_outline_longhands = " ".join("outline-color outline-style outline-width".split() +
|
|
["-moz-outline-radius-{0}".format(x.ident.replace("_", ""))
|
|
for x in CORNERS]) %>
|
|
<%self:impl_trait style_struct_name="Outline"
|
|
skip_longhands="${skip_outline_longhands}"
|
|
skip_additionals="*">
|
|
|
|
<% impl_keyword("outline_style", "mOutlineStyle", border_style_keyword, need_clone=True) %>
|
|
|
|
<% impl_color("outline_color", "mOutlineColor", color_flags_ffi_name="mOutlineStyle") %>
|
|
|
|
<% impl_app_units("outline_width", "mActualOutlineWidth", need_clone=False,
|
|
round_to_pixels=True) %>
|
|
|
|
% for corner in CORNERS:
|
|
<% impl_corner_style_coord("_moz_outline_radius_%s" % corner.ident.replace("_", ""),
|
|
"mOutlineRadius.mUnits[%s]" % corner.x_index,
|
|
"mOutlineRadius.mValues[%s]" % corner.x_index,
|
|
"mOutlineRadius.mUnits[%s]" % corner.y_index,
|
|
"mOutlineRadius.mValues[%s]" % corner.y_index) %>
|
|
% endfor
|
|
|
|
fn outline_has_nonzero_width(&self) -> bool {
|
|
self.gecko.mActualOutlineWidth != 0
|
|
}
|
|
</%self:impl_trait>
|
|
|
|
<%self:impl_trait style_struct_name="Font"
|
|
skip_longhands="font-family font-style font-size font-weight"
|
|
skip_additionals="*">
|
|
|
|
fn set_font_family(&mut self, v: longhands::font_family::computed_value::T) {
|
|
use style::properties::longhands::font_family::computed_value::FontFamily;
|
|
use gecko_bindings::structs::FontFamilyType;
|
|
|
|
let list = &mut self.gecko.mFont.fontlist;
|
|
unsafe { Gecko_FontFamilyList_Clear(list); }
|
|
|
|
for family in &v.0 {
|
|
match *family {
|
|
FontFamily::FamilyName(ref name) => {
|
|
unsafe { Gecko_FontFamilyList_AppendNamed(list, name.as_ptr()); }
|
|
}
|
|
FontFamily::Generic(ref name) => {
|
|
let family_type =
|
|
if name == &atom!("serif") { FontFamilyType::eFamily_serif }
|
|
else if name == &atom!("sans-serif") { FontFamilyType::eFamily_sans_serif }
|
|
else if name == &atom!("cursive") { FontFamilyType::eFamily_cursive }
|
|
else if name == &atom!("fantasy") { FontFamilyType::eFamily_fantasy }
|
|
else if name == &atom!("monospace") { FontFamilyType::eFamily_monospace }
|
|
else { panic!("Unknown generic font family") };
|
|
unsafe { Gecko_FontFamilyList_AppendGeneric(list, family_type); }
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
fn copy_font_family_from(&mut self, other: &Self) {
|
|
unsafe { Gecko_CopyFontFamilyFrom(&mut self.gecko.mFont, &other.gecko.mFont); }
|
|
}
|
|
|
|
<%call expr="impl_keyword('font_style', 'mFont.style',
|
|
data.longhands_by_name['font-style'].keyword, need_clone=False)"></%call>
|
|
|
|
// FIXME(bholley): Gecko has two different sizes, one of which (mSize) is the
|
|
// actual computed size, and the other of which (mFont.size) is the 'display
|
|
// size' which takes font zooming into account. We don't handle font zooming yet.
|
|
fn set_font_size(&mut self, v: longhands::font_size::computed_value::T) {
|
|
self.gecko.mFont.size = v.0;
|
|
self.gecko.mSize = v.0;
|
|
}
|
|
fn copy_font_size_from(&mut self, other: &Self) {
|
|
self.gecko.mFont.size = other.gecko.mFont.size;
|
|
self.gecko.mSize = other.gecko.mSize;
|
|
}
|
|
fn clone_font_size(&self) -> longhands::font_size::computed_value::T {
|
|
Au(self.gecko.mSize)
|
|
}
|
|
|
|
fn set_font_weight(&mut self, v: longhands::font_weight::computed_value::T) {
|
|
self.gecko.mFont.weight = v as u16;
|
|
}
|
|
<%call expr="impl_simple_copy('font_weight', 'mFont.weight')"></%call>
|
|
|
|
fn clone_font_weight(&self) -> longhands::font_weight::computed_value::T {
|
|
debug_assert!(self.gecko.mFont.weight >= 100);
|
|
debug_assert!(self.gecko.mFont.weight <= 900);
|
|
debug_assert!(self.gecko.mFont.weight % 10 == 0);
|
|
unsafe { transmute(self.gecko.mFont.weight) }
|
|
}
|
|
|
|
// This is used for PartialEq, which we don't implement for gecko style structs.
|
|
fn compute_font_hash(&mut self) {}
|
|
|
|
</%self:impl_trait>
|
|
|
|
<%self:impl_trait style_struct_name="Box" skip_longhands="display overflow-y vertical-align -moz-binding">
|
|
|
|
// We manually-implement the |display| property until we get general
|
|
// infrastructure for preffing certain values.
|
|
<% display_keyword = Keyword("display", "inline block inline-block table inline-table table-row-group " +
|
|
"table-header-group table-footer-group table-row table-column-group " +
|
|
"table-column table-cell table-caption list-item flex none " +
|
|
"-moz-box -moz-inline-box") %>
|
|
<%call expr="impl_keyword('display', 'mDisplay', display_keyword, True)"></%call>
|
|
|
|
// overflow-y is implemented as a newtype of overflow-x, so we need special handling.
|
|
// We could generalize this if we run into other newtype keywords.
|
|
<% overflow_x = data.longhands_by_name["overflow-x"] %>
|
|
fn set_overflow_y(&mut self, v: longhands::overflow_y::computed_value::T) {
|
|
use style::properties::longhands::overflow_x::computed_value::T as BaseType;
|
|
// FIXME(bholley): Align binary representations and ditch |match| for cast + static_asserts
|
|
self.gecko.mOverflowY = match v.0 {
|
|
% for value in overflow_x.keyword.values_for('gecko'):
|
|
BaseType::${to_rust_ident(value)} => structs::${overflow_x.keyword.gecko_constant(value)} as u8,
|
|
% endfor
|
|
};
|
|
}
|
|
<%call expr="impl_simple_copy('overflow_y', 'mOverflowY')"></%call>
|
|
fn clone_overflow_y(&self) -> longhands::overflow_y::computed_value::T {
|
|
use style::properties::longhands::overflow_x::computed_value::T as BaseType;
|
|
use style::properties::longhands::overflow_y::computed_value::T as NewType;
|
|
// FIXME(bholley): Align binary representations and ditch |match| for cast + static_asserts
|
|
match self.gecko.mOverflowY as u32 {
|
|
% for value in overflow_x.keyword.values_for('gecko'):
|
|
structs::${overflow_x.keyword.gecko_constant(value)} => NewType(BaseType::${to_rust_ident(value)}),
|
|
% endfor
|
|
x => panic!("Found unexpected value in style struct for overflow_y property: {}", x),
|
|
}
|
|
}
|
|
|
|
fn set_vertical_align(&mut self, v: longhands::vertical_align::computed_value::T) {
|
|
<% keyword = data.longhands_by_name["vertical-align"].keyword %>
|
|
use style::properties::longhands::vertical_align::computed_value::T;
|
|
// FIXME: Align binary representations and ditch |match| for cast + static_asserts
|
|
match v {
|
|
% for value in keyword.values_for('gecko'):
|
|
T::${to_rust_ident(value)} =>
|
|
self.gecko.mVerticalAlign.set_enum(structs::${keyword.gecko_constant(value)} as i32),
|
|
% endfor
|
|
T::LengthOrPercentage(v) => self.gecko.mVerticalAlign.set(v),
|
|
}
|
|
}
|
|
|
|
<%call expr="impl_coord_copy('vertical_align', 'mVerticalAlign')"></%call>
|
|
|
|
fn set__moz_binding(&mut self, v: longhands::_moz_binding::computed_value::T) {
|
|
use style::properties::longhands::_moz_binding::SpecifiedValue as BindingValue;
|
|
match v {
|
|
BindingValue::None => debug_assert!(self.gecko.mBinding.mRawPtr.is_null()),
|
|
BindingValue::Url(ref url, ref extra_data) => {
|
|
unsafe {
|
|
Gecko_SetMozBinding(&mut self.gecko,
|
|
url.as_str().as_ptr(),
|
|
url.as_str().len() as u32,
|
|
extra_data.base.as_raw(),
|
|
extra_data.referrer.as_raw(),
|
|
extra_data.principal.as_raw());
|
|
}
|
|
}
|
|
}
|
|
}
|
|
fn copy__moz_binding_from(&mut self, other: &Self) {
|
|
unsafe { Gecko_CopyMozBindingFrom(&mut self.gecko, &other.gecko); }
|
|
}
|
|
</%self:impl_trait>
|
|
|
|
<%self:impl_trait style_struct_name="Background"
|
|
skip_longhands="background-color background-repeat background-image"
|
|
skip_additionals="*">
|
|
|
|
<% impl_color("background_color", "mBackgroundColor") %>
|
|
|
|
fn copy_background_repeat_from(&mut self, other: &Self) {
|
|
self.gecko.mImage.mRepeatCount = other.gecko.mImage.mRepeatCount;
|
|
self.gecko.mImage.mLayers.mFirstElement.mRepeat =
|
|
other.gecko.mImage.mLayers.mFirstElement.mRepeat;
|
|
}
|
|
|
|
fn set_background_repeat(&mut self, v: longhands::background_repeat::computed_value::T) {
|
|
use style::properties::longhands::background_repeat::computed_value::T as Computed;
|
|
use gecko_bindings::structs::{NS_STYLE_IMAGELAYER_REPEAT_REPEAT, NS_STYLE_IMAGELAYER_REPEAT_NO_REPEAT};
|
|
use gecko_bindings::structs::nsStyleImageLayers_Repeat;
|
|
let (repeat_x, repeat_y) = match v {
|
|
Computed::repeat_x => (NS_STYLE_IMAGELAYER_REPEAT_REPEAT,
|
|
NS_STYLE_IMAGELAYER_REPEAT_NO_REPEAT),
|
|
Computed::repeat_y => (NS_STYLE_IMAGELAYER_REPEAT_NO_REPEAT,
|
|
NS_STYLE_IMAGELAYER_REPEAT_REPEAT),
|
|
Computed::repeat => (NS_STYLE_IMAGELAYER_REPEAT_REPEAT,
|
|
NS_STYLE_IMAGELAYER_REPEAT_REPEAT),
|
|
Computed::no_repeat => (NS_STYLE_IMAGELAYER_REPEAT_NO_REPEAT,
|
|
NS_STYLE_IMAGELAYER_REPEAT_NO_REPEAT),
|
|
};
|
|
|
|
self.gecko.mImage.mRepeatCount = 1;
|
|
self.gecko.mImage.mLayers.mFirstElement.mRepeat = nsStyleImageLayers_Repeat {
|
|
mXRepeat: repeat_x as u8,
|
|
mYRepeat: repeat_y as u8,
|
|
};
|
|
}
|
|
|
|
fn copy_background_image_from(&mut self, other: &Self) {
|
|
unsafe {
|
|
Gecko_CopyImageValueFrom(&mut self.gecko.mImage.mLayers.mFirstElement.mImage,
|
|
&other.gecko.mImage.mLayers.mFirstElement.mImage);
|
|
}
|
|
}
|
|
|
|
fn set_background_image(&mut self, image: longhands::background_image::computed_value::T) {
|
|
use gecko_bindings::structs::{NS_STYLE_GRADIENT_SHAPE_LINEAR, NS_STYLE_GRADIENT_SIZE_FARTHEST_CORNER};
|
|
use gecko_bindings::structs::nsStyleCoord;
|
|
use style::values::computed::Image;
|
|
use style::values::specified::AngleOrCorner;
|
|
use cssparser::Color as CSSColor;
|
|
|
|
unsafe {
|
|
// Prevent leaking of the last element we did set
|
|
Gecko_SetNullImageValue(&mut self.gecko.mImage.mLayers.mFirstElement.mImage);
|
|
}
|
|
|
|
self.gecko.mImage.mImageCount = cmp::max(1, self.gecko.mImage.mImageCount);
|
|
if let Some(image) = image.0 {
|
|
match image {
|
|
Image::LinearGradient(ref gradient) => {
|
|
let stop_count = gradient.stops.len();
|
|
if stop_count >= ::std::u32::MAX as usize {
|
|
warn!("stylo: Prevented overflow due to too many gradient stops");
|
|
return;
|
|
}
|
|
|
|
let gecko_gradient = unsafe {
|
|
Gecko_CreateGradient(NS_STYLE_GRADIENT_SHAPE_LINEAR as u8,
|
|
NS_STYLE_GRADIENT_SIZE_FARTHEST_CORNER as u8,
|
|
/* repeating = */ false,
|
|
/* legacy_syntax = */ false,
|
|
stop_count as u32)
|
|
};
|
|
|
|
// TODO: figure out what gecko does in the `corner` case.
|
|
if let AngleOrCorner::Angle(angle) = gradient.angle_or_corner {
|
|
unsafe {
|
|
(*gecko_gradient).mAngle.set(angle);
|
|
}
|
|
}
|
|
|
|
let mut coord: nsStyleCoord = unsafe { uninitialized() };
|
|
for (index, stop) in gradient.stops.iter().enumerate() {
|
|
// NB: stops are guaranteed to be none in the gecko side by
|
|
// default.
|
|
coord.set(stop.position);
|
|
let color = match stop.color {
|
|
CSSColor::CurrentColor => {
|
|
// TODO(emilio): gecko just stores an nscolor,
|
|
// and it doesn't seem to support currentColor
|
|
// as value in a gradient.
|
|
//
|
|
// Double-check it and either remove
|
|
// currentColor for servo or see how gecko
|
|
// handles this.
|
|
0
|
|
},
|
|
CSSColor::RGBA(ref rgba) => convert_rgba_to_nscolor(rgba),
|
|
};
|
|
|
|
let mut stop = unsafe {
|
|
&mut (*gecko_gradient).mStops[index]
|
|
};
|
|
|
|
stop.mColor = color;
|
|
stop.mIsInterpolationHint = false;
|
|
stop.mLocation.copy_from(&coord);
|
|
}
|
|
|
|
unsafe {
|
|
Gecko_SetGradientImageValue(&mut self.gecko.mImage.mLayers.mFirstElement.mImage,
|
|
gecko_gradient);
|
|
}
|
|
},
|
|
Image::Url(_) => {
|
|
// let utf8_bytes = url.as_bytes();
|
|
// Gecko_SetUrlImageValue(&mut self.gecko.mImage.mLayers.mFirstElement,
|
|
// utf8_bytes.as_ptr() as *const _,
|
|
// utf8_bytes.len());
|
|
warn!("stylo: imgRequestProxies are not threadsafe in gecko, \
|
|
background-image: url() not yet implemented");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
</%self:impl_trait>
|
|
|
|
<%self:impl_trait style_struct_name="List" skip_longhands="list-style-type" skip_additionals="*">
|
|
|
|
<% impl_keyword_setter("list_style_type", "__LIST_STYLE_TYPE__",
|
|
data.longhands_by_name["list-style-type"].keyword) %>
|
|
fn copy_list_style_type_from(&mut self, other: &Self) {
|
|
unsafe {
|
|
Gecko_CopyListStyleTypeFrom(&mut self.gecko, &other.gecko);
|
|
}
|
|
}
|
|
|
|
</%self:impl_trait>
|
|
|
|
<%self:impl_trait style_struct_name="InheritedText"
|
|
skip_longhands="text-align line-height">
|
|
|
|
<% text_align_keyword = Keyword("text-align", "start end left right center justify -moz-center -moz-left " +
|
|
"-moz-right match-parent") %>
|
|
<%call expr="impl_keyword('text_align', 'mTextAlign', text_align_keyword, need_clone=False)"></%call>
|
|
|
|
fn set_line_height(&mut self, v: longhands::line_height::computed_value::T) {
|
|
use style::properties::longhands::line_height::computed_value::T;
|
|
// FIXME: Align binary representations and ditch |match| for cast + static_asserts
|
|
match v {
|
|
T::Normal => self.gecko.mLineHeight.set_normal(),
|
|
T::Length(val) => self.gecko.mLineHeight.set_coord(val),
|
|
T::Number(val) => self.gecko.mLineHeight.set_factor(val),
|
|
T::MozBlockHeight =>
|
|
self.gecko.mLineHeight.set_enum(structs::NS_STYLE_LINE_HEIGHT_BLOCK_HEIGHT as i32),
|
|
}
|
|
}
|
|
|
|
<%call expr="impl_coord_copy('line_height', 'mLineHeight')"></%call>
|
|
|
|
</%self:impl_trait>
|
|
|
|
<%self:impl_trait style_struct_name="Text"
|
|
skip_longhands="text-decoration-color text-decoration-line"
|
|
skip_additionals="*">
|
|
|
|
<% impl_color("text_decoration_color", "mTextDecorationColor",
|
|
color_flags_ffi_name="mTextDecorationStyle") %>
|
|
|
|
fn set_text_decoration_line(&mut self, v: longhands::text_decoration_line::computed_value::T) {
|
|
let mut bits: u8 = 0;
|
|
if v.underline {
|
|
bits |= structs::NS_STYLE_TEXT_DECORATION_LINE_UNDERLINE as u8;
|
|
}
|
|
if v.overline {
|
|
bits |= structs::NS_STYLE_TEXT_DECORATION_LINE_OVERLINE as u8;
|
|
}
|
|
if v.line_through {
|
|
bits |= structs::NS_STYLE_TEXT_DECORATION_LINE_LINE_THROUGH as u8;
|
|
}
|
|
self.gecko.mTextDecorationLine = bits;
|
|
}
|
|
|
|
<%call expr="impl_simple_copy('text_decoration_line', 'mTextDecorationLine')"></%call>
|
|
|
|
fn has_underline(&self) -> bool {
|
|
(self.gecko.mTextDecorationLine & (structs::NS_STYLE_TEXT_DECORATION_LINE_UNDERLINE as u8)) != 0
|
|
}
|
|
fn has_overline(&self) -> bool {
|
|
(self.gecko.mTextDecorationLine & (structs::NS_STYLE_TEXT_DECORATION_LINE_OVERLINE as u8)) != 0
|
|
}
|
|
fn has_line_through(&self) -> bool {
|
|
(self.gecko.mTextDecorationLine & (structs::NS_STYLE_TEXT_DECORATION_LINE_LINE_THROUGH as u8)) != 0
|
|
}
|
|
</%self:impl_trait>
|
|
|
|
<%self:impl_trait style_struct_name="SVG"
|
|
skip_longhands="flood-color lighting-color stop-color"
|
|
skip_additionals="*">
|
|
|
|
<% impl_color("flood_color", "mFloodColor") %>
|
|
|
|
<% impl_color("lighting_color", "mLightingColor") %>
|
|
|
|
<% impl_color("stop_color", "mStopColor") %>
|
|
|
|
</%self:impl_trait>
|
|
|
|
<%self:impl_trait style_struct_name="Color"
|
|
skip_longhands="*">
|
|
|
|
fn set_color(&mut self, v: longhands::color::computed_value::T) {
|
|
let result = convert_rgba_to_nscolor(&v);
|
|
${set_gecko_property("mColor", "result")}
|
|
}
|
|
|
|
<%call expr="impl_simple_copy('color', 'mColor')"></%call>
|
|
|
|
fn clone_color(&self) -> longhands::color::computed_value::T {
|
|
let color = ${get_gecko_property("mColor")} as u32;
|
|
convert_nscolor_to_rgba(color)
|
|
}
|
|
</%self:impl_trait>
|
|
|
|
<%def name="define_ffi_struct_accessor(style_struct)">
|
|
#[no_mangle]
|
|
#[allow(non_snake_case, unused_variables)]
|
|
pub extern "C" fn Servo_GetStyle${style_struct.gecko_name}(computed_values: *mut ServoComputedValues)
|
|
-> *const ${style_struct.gecko_ffi_name} {
|
|
type Helpers = ArcHelpers<ServoComputedValues, GeckoComputedValues>;
|
|
Helpers::with(computed_values, |values| values.get_${style_struct.trait_name_lower}().get_gecko()
|
|
as *const ${style_struct.gecko_ffi_name})
|
|
}
|
|
</%def>
|
|
|
|
% for style_struct in data.style_structs:
|
|
${declare_style_struct(style_struct)}
|
|
${impl_style_struct(style_struct)}
|
|
% if not style_struct.trait_name in data.manual_style_structs:
|
|
<%self:raw_impl_trait style_struct="${style_struct}"></%self:raw_impl_trait>
|
|
% endif
|
|
${define_ffi_struct_accessor(style_struct)}
|
|
% endfor
|
|
|
|
lazy_static! {
|
|
pub static ref INITIAL_GECKO_VALUES: GeckoComputedValues = GeckoComputedValues {
|
|
% for style_struct in data.style_structs:
|
|
${style_struct.ident}: ${style_struct.gecko_struct_name}::initial(),
|
|
% endfor
|
|
custom_properties: None,
|
|
shareable: true,
|
|
writing_mode: WritingMode::empty(),
|
|
root_font_size: longhands::font_size::get_initial_value(),
|
|
};
|
|
}
|
|
|
|
// This is a thread-local rather than a lazy static to avoid atomic operations when cascading
|
|
// properties.
|
|
thread_local!(static CASCADE_PROPERTY: Vec<Option<CascadePropertyFn<GeckoComputedValues>>> = {
|
|
make_cascade_vec::<GeckoComputedValues>()
|
|
});
|