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add assign_height in box_

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patrick kim 2014-01-22 14:29:54 +09:00
parent ef122f8fbf
commit 5ce3bae160
2 changed files with 88 additions and 54 deletions
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138
src/components/main/layout/box_.rs
View file

@ -27,7 +27,7 @@ use std::cell::RefCell;
use std::cmp::ApproxEq;
use std::num::Zero;
use style::{ComputedValues, TElement, TNode, cascade};
use style::computed_values::{LengthOrPercentage, overflow};
use style::computed_values::{LengthOrPercentage, LengthOrPercentageOrAuto, overflow, LPA_Auto};
use style::computed_values::{border_style, clear, font_family, line_height};
use style::computed_values::{text_align, text_decoration, vertical_align, visibility};
@ -108,7 +108,8 @@ pub enum SpecificBoxInfo {
pub struct ImageBoxInfo {
/// The image held within this box.
image: RefCell<ImageHolder>,
computed_size: RefCell<Option<Size2D<Au>>>,
computed_width: RefCell<Option<Au>>,
computed_height: RefCell<Option<Au>>,
dom_width: Option<Au>,
dom_height: Option<Au>,
}
@ -132,20 +133,21 @@ impl ImageBoxInfo {
ImageBoxInfo {
image: RefCell::new(ImageHolder::new(image_url, local_image_cache)),
computed_size: RefCell::new(None),
computed_width: RefCell::new(None),
computed_height: RefCell::new(None),
dom_width: convert_length(node,"width"),
dom_height: convert_length(node,"height"),
}
}
/// Returns Calculated the width of an image, accounting for the height attribute.
/// Returns the calculated width of the image, accounting for the width attribute.
pub fn computed_width(&self) -> Au {
match self.computed_size.borrow().get() {
&Some(size) => {
size.width
match self.computed_width.borrow().get() {
&Some(width) => {
width
},
&None => {
fail!("image size is not computed yet!");
fail!("width is not computed yet!");
}
}
}
@ -155,11 +157,26 @@ impl ImageBoxInfo {
Au::from_px(image_ref.get().get_size().unwrap_or(Size2D(0,0)).width)
}
/// Returns Calculated the height of an image, accounting for the height attribute.
pub fn style_length(style_length: LengthOrPercentageOrAuto,
dom_length: Option<Au>,
container_width: Au) -> MaybeAuto {
match (MaybeAuto::from_style(style_length,container_width),dom_length) {
(Specified(length),_) => {
Specified(length)
},
(Auto,Some(length)) => {
Specified(length)
},
(Auto,None) => {
Auto
}
}
}
/// Returns the calculated height of the image, accounting for the height attribute.
pub fn computed_height(&self) -> Au {
match self.computed_size.borrow().get() {
&Some(size) => {
size.height
match self.computed_height.borrow().get() {
&Some(height) => {
height
},
&None => {
fail!("image size is not computed yet!");
@ -957,7 +974,7 @@ impl Box {
(guessed_width + additional_minimum, guessed_width + additional_preferred)
}
pub fn content_width(&self) -> Au {
match self.specific {
GenericBox | IframeBox(_) => Au(0),
@ -970,7 +987,7 @@ impl Box {
text_bounds.size.width
}
UnscannedTextBox(_) => fail!("Unscanned text boxes should have been scanned by now!"),
}
}
}
/// Returns, and computes, the height of this box.
///
@ -1106,60 +1123,73 @@ impl Box {
}
ImageBox(ref image_box_info) => {
// TODO(ksh8281): compute border,margin,padding
let width = match (MaybeAuto::from_style(self.style().Box.width,container_width),
image_box_info.dom_width) {
(Specified(width),_) => {
Specified(width)
},
(Auto,Some(width)) => {
Specified(width)
},
(Auto,None) => {
Auto
}
};
let width = ImageBoxInfo::style_length(self.style().Box.width,
image_box_info.dom_width,
container_width);
// FIXME(ksh8281): we shouldn't figure height this way
// now, we don't know about size of parent's height
let height = ImageBoxInfo::style_length(self.style().Box.height,
image_box_info.dom_height,
Au::new(0));
// FIXME(ksh8281): we shouldn't assign height this way
// we need box.assign_height
// now, we can't know about size of parent's height
let height = match (MaybeAuto::from_style(self.style().Box.height,container_width),
image_box_info.dom_height) {
(Specified(height),_) => {
Specified(height)
},
(Auto,Some(height)) => {
Specified(height)
},
(Auto,None) => {
Auto
}
};
let (width,height) = match (width,height) {
let width = match (width,height) {
(Auto,Auto) => {
(image_box_info.image_width(),image_box_info.image_height())
image_box_info.image_width()
},
(Auto,Specified(h)) => {
let scale = image_box_info.
image_height().to_f32().unwrap() / h.to_f32().unwrap();
(Au::new((image_box_info.image_width().to_f32().unwrap() / scale) as i32),h)
Au::new((image_box_info.image_width().to_f32().unwrap() / scale) as i32)
},
(Specified(w),Auto) => {
let scale = image_box_info.
image_width().to_f32().unwrap() / w.to_f32().unwrap();
(w,Au::new((image_box_info.image_height().to_f32().unwrap() / scale) as i32))
},
(Specified(w),Specified(h)) => {
(w,h)
(Specified(w),_) => {
w
}
};
let mut position = self.position.borrow_mut();
position.get().size.width = width;
image_box_info.computed_width.set(Some(width));
}
ScannedTextBox(_) => {
// Scanned text boxes will have already had their widths assigned by this point.
}
UnscannedTextBox(_) => fail!("Unscanned text boxes should have been scanned by now!"),
}
}
pub fn assign_height(&self) {
match self.specific {
GenericBox | IframeBox(_) => {
}
ImageBox(ref image_box_info) => {
// TODO(ksh8281): compute border,margin,padding
let width = image_box_info.computed_width();
// FIXME(ksh8281): we shouldn't assign height this way
// we don't know about size of parent's height
let height = ImageBoxInfo::style_length(self.style().Box.height,
image_box_info.dom_height,
Au::new(0));
let height = match (self.style().Box.width,
image_box_info.dom_width,
height) {
(LPA_Auto, None, Auto) => {
image_box_info.image_height()
},
(_,_,Auto) => {
let scale = image_box_info.image_width().to_f32().unwrap()
/ width.to_f32().unwrap();
Au::new((image_box_info.image_height().to_f32().unwrap() / scale) as i32)
},
(_,_,Specified(h)) => {
h
}
};
let mut position = self.position.borrow_mut();
position.get().size.height = height;
image_box_info.computed_size.set(Some(Size2D(width,height)));
image_box_info.computed_height.set(Some(height));
}
ScannedTextBox(_) => {
// Scanned text boxes will have already had their widths assigned by this point.

4
src/components/main/layout/inline.rs
View file

@ -676,6 +676,10 @@ impl Flow for InlineFlow {
// TODO(pcwalton): Cache the linebox scanner?
debug!("assign_height_inline: floats_in: {:?}", self.base.floats_in);
// assign height for inline boxes
for box_ in self.boxes.iter() {
box_.assign_height();
}
let scanner_floats = self.base.floats_in.clone();
let mut scanner = LineboxScanner::new(scanner_floats);