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Generalize `draw_image_switch` to `draw_image_segmented_control`

This commit is contained in:
Patrick Walton 2019-05-08 10:41:03 -07:00
parent 940605fbb5
commit 5a2c716688
1 changed files with 24 additions and 15 deletions
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29
ui/src/lib.rs
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@ -449,28 +449,37 @@ impl<D> UIPresenter<D> where D: Device {
value value
} }
pub fn draw_image_switch(&mut self, pub fn draw_image_segmented_control(&mut self,
device: &D, device: &D,
mut origin: Point2DI32, mut origin: Point2DI32,
segment_textures: &[&D::Texture], segment_textures: &[&D::Texture],
mut value: u8) mut value: Option<u8>)
-> u8 { -> Option<u8> {
if let Some(new_value) = self.draw_segmented_control(device, let mut clicked_segment = None;
if let Some(segment_index) = self.draw_segmented_control(device,
origin, origin,
Some(value), value,
segment_textures.len() as u8) { segment_textures.len() as u8) {
value = new_value; if let Some(ref mut value) = value {
*value = segment_index;
}
clicked_segment = Some(segment_index);
} }
for (segment_index, segment_texture) in segment_textures.iter().enumerate() { for (segment_index, segment_texture) in segment_textures.iter().enumerate() {
let texture_width = device.texture_size(segment_texture).x(); let texture_width = device.texture_size(segment_texture).x();
let offset = SEGMENT_SIZE / 2 - texture_width / 2; let offset = Point2DI32::new(SEGMENT_SIZE / 2 - texture_width / 2, PADDING);
let color = if segment_index as u8 == value { TEXT_COLOR } else { WINDOW_COLOR }; let color = if Some(segment_index as u8) == value {
self.draw_texture(device, origin + Point2DI32::new(offset, 0), segment_texture, color); WINDOW_COLOR
} else {
TEXT_COLOR
};
self.draw_texture(device, origin + offset, segment_texture, color);
origin += Point2DI32::new(SEGMENT_SIZE + 1, 0); origin += Point2DI32::new(SEGMENT_SIZE + 1, 0);
} }
value clicked_segment
} }
fn draw_segmented_control(&mut self, fn draw_segmented_control(&mut self,