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// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
// external
use qt;
// self
use tree;
use math::*;
use traits::{
ConvTransform,
TransformFromBBox,
};
use utils;
use {
Options,
};
pub fn apply(
pattern_node: tree::NodeRef,
pattern: &tree::Pattern,
opt: &Options,
global_ts: qt::Transform,
bbox: Rect,
brush: &mut qt::Brush,
) {
let r = if pattern.units == tree::Units::ObjectBoundingBox {
pattern.rect.transform(tree::Transform::from_bbox(bbox))
} else {
pattern.rect
};
let global_ts = tree::Transform::from_native(&global_ts);
let (sx, sy) = global_ts.get_scale();
let img_size = Size::new(r.width() * sx, r.height() * sy).to_screen_size();
let img = qt::Image::new(img_size.width as u32, img_size.height as u32);
let mut img = match img {
Some(img) => img,
None => {
// TODO: add expected image size
warn!("Subimage creation failed.");
return;
}
};
img.set_dpi(opt.dpi);
img.fill(0, 0, 0, 0);
let p = qt::Painter::new(&img);
p.apply_transform(&qt::Transform::new(sx, 0.0, 0.0, sy, 0.0, 0.0));
if let Some(vbox) = pattern.view_box {
let img_view = Rect::from_xywh(0.0, 0.0, r.width(), r.height());
let (dx, dy, sx2, sy2) = utils::view_box_transform(vbox, img_view);
p.apply_transform(&qt::Transform::new(sx2, 0.0, 0.0, sy2, dx, dy));
}
if pattern.content_units == tree::Units::ObjectBoundingBox {
p.apply_transform(&qt::Transform::from_bbox(bbox));
}
super::render_group(pattern_node, opt, img_size, &p);
p.end();
brush.set_pattern(img);
let mut ts = tree::Transform::default();
ts.append(&pattern.transform);
ts.translate(r.x(), r.y());
ts.scale(1.0 / sx, 1.0 / sy);
brush.set_transform(ts.to_native());
}
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