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ui_manager: Calculate max_height in a purer fashion

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This commit is contained in:
Dorota Czaplejewicz
2020-03-02 08:14:01 +00:00
parent 1093e32325
commit fa5c7c63d9
1 changed files with 14 additions and 11 deletions
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25
src/ui_manager.rs
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@ -10,6 +10,7 @@
use std::cmp::min;
use ::logging;
use ::outputs::OutputState;
use ::outputs::c::OutputHandle;
mod c {
@ -65,12 +66,10 @@ impl Manager {
/// distance from display, and motor skills of the user.
// FIXME: Start by making this aware of display's dpi,
// then layout number of rows.
fn get_max_target_height(&self) -> u32 {
fn get_max_target_height(output: &OutputState) -> u32 {
let layout_rows = 4; // FIXME: use number from layout.
let (scale, px_size, phys_size) = (&self.output).as_ref()
.and_then(|o| o.get_state())
.map(|os| (os.scale as u32, os.get_pixel_size(), os.get_phys_size()))
.unwrap_or((1, None, None));
let px_size = output.get_pixel_size();
let phys_size = output.get_phys_size();
let finger_height_px = match (px_size, phys_size) {
(Some(px_size), Some(phys_size)) => {
@ -84,13 +83,13 @@ impl Manager {
// TODO: Take into account target shape/area, not just height.
finger_height_mm * px_size.height as f64 / phys_size.height as f64
},
(_, None) => scale as f64 * 52.5, // match total 420px at scale 2 from original design
(_, None) => output.scale as f64 * 52.5, // match total 420px at scale 2 from original design
(None, Some(_)) => {
log_print!(
logging::Level::Surprise,
"Output has physical size data but no pixel info",
);
scale as f64 * 52.5
output.scale as f64 * 52.5
},
};
(layout_rows as f64 * finger_height_px) as u32
@ -99,9 +98,13 @@ impl Manager {
fn get_perceptual_height(&self) -> Option<u32> {
let output_info = (&self.output).as_ref()
.and_then(|o| o.get_state())
.map(|os| (os.scale as u32, os.get_pixel_size()));
.map(|os| (
os.scale as u32,
os.get_pixel_size(),
Manager::get_max_target_height(&os),
));
match output_info {
Some((scale, Some(px_size))) => Some({
Some((scale, Some(px_size), target_height)) => Some({
let height = if (px_size.width < 720) & (px_size.width > 0) {
px_size.width * 7 / 12 // to match 360×210
} else if px_size.width < 1080 {
@ -113,10 +116,10 @@ impl Manager {
// Don't exceed half the display size.
let height = min(height, px_size.height / 2);
// Don't waste screen space by exceeding best target height.
let height = min(height, self.get_max_target_height());
let height = min(height, target_height);
height / scale
}),
Some((scale, None)) => Some(360 / scale),
Some((scale, None, _)) => Some(360 / scale),
None => None,
}
}