Merge branch 'latch' into 'master'
Latch views See merge request Librem5/squeekboard!416
This commit is contained in:
		@ -10,7 +10,7 @@ pub struct KeySym(pub String);
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type View = String;
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/// Use to send modified keypresses
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#[derive(Debug, Clone, PartialEq, Eq, Hash)]
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#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
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pub enum Modifier {
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    /// Control and Alt are the only modifiers
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    /// which doesn't interfere with levels,
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@ -30,6 +30,11 @@ pub enum Action {
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        lock: View,
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        /// When unlocked by pressing it or emitting a key
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        unlock: View,
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        /// Whether key has a latched state
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        /// that pops when another key is pressed.
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        latches: bool,
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        /// Should take on *locked* appearance whenever latch comes back to those views.
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        looks_locked_from: Vec<View>,
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    },
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    /// Hold this modifier for as long as the button is pressed
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    ApplyModifier(Modifier),
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@ -49,14 +54,24 @@ pub enum Action {
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impl Action {
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    pub fn is_locked(&self, view_name: &str) -> bool {
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        match self {
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            Action::LockView { lock, unlock: _ } => lock == view_name,
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            Action::LockView { lock, unlock: _, latches: _, looks_locked_from: _ } => lock == view_name,
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            _ => false,
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        }
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    }
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    pub fn has_locked_appearance_from(&self, locked_view_name: &str) -> bool {
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        match self {
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            Action::LockView { lock: _, unlock: _, latches: _, looks_locked_from } => {
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                looks_locked_from.iter()
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                    .find(|view| locked_view_name == view.as_str())
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                    .is_some()
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            },
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            _ => false,
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        }
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    }
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    pub fn is_active(&self, view_name: &str) -> bool {
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        match self {
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            Action::SetView(view) => view == view_name,
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            Action::LockView { lock, unlock: _ } => lock == view_name,
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            Action::LockView { lock, unlock: _, latches: _, looks_locked_from: _ } => lock == view_name,
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            _ => false,
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        }
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    }
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										14
									
								
								src/data.rs
									
									
									
									
									
								
							
							
						
						
									
										14
									
								
								src/data.rs
									
									
									
									
									
								
							@ -289,7 +289,13 @@ struct ButtonMeta {
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#[serde(deny_unknown_fields)]
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enum Action {
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    #[serde(rename="locking")]
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    Locking { lock_view: String, unlock_view: String },
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    Locking {
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        lock_view: String,
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        unlock_view: String,
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        pops: Option<bool>,
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        #[serde(default)]
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        looks_locked_from: Vec<String>,
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    },
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    #[serde(rename="set_view")]
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    SetView(String),
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    #[serde(rename="show_prefs")]
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@ -600,7 +606,9 @@ fn create_action<H: logging::Handler>(
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            )
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        ),
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        SubmitData::Action(Action::Locking {
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            lock_view, unlock_view
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            lock_view, unlock_view,
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            pops,
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            looks_locked_from,
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        }) => ::action::Action::LockView {
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            lock: filter_view_name(
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                name,
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@ -614,6 +622,8 @@ fn create_action<H: logging::Handler>(
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                &view_names,
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                warning_handler,
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            ),
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            latches: pops.unwrap_or(true),
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            looks_locked_from,
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        },
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        SubmitData::Action(
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            Action::ShowPrefs
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		||||
							
								
								
									
										212
									
								
								src/drawing.rs
									
									
									
									
									
								
							
							
						
						
									
										212
									
								
								src/drawing.rs
									
									
									
									
									
								
							@ -3,20 +3,24 @@
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use cairo;
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use std::cell::RefCell;
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use ::action::Action;
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use ::action::{ Action, Modifier };
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use ::keyboard;
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use ::layout::{ Button, Layout };
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use ::layout::c::{ EekGtkKeyboard, Point };
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use ::layout::{ Button, Label, LatchedState, Layout };
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use ::layout::c::{ Bounds, EekGtkKeyboard, Point };
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use ::submission::Submission;
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use glib::translate::FromGlibPtrNone;
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use gtk::WidgetExt;
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use std::collections::HashSet;
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use std::ffi::CStr;
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use std::ptr;
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mod c {
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    use super::*;
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    use cairo_sys;
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    use std::os::raw::c_void;
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    use std::os::raw::{ c_char, c_void };
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    // This is constructed only in C, no need for warnings
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    #[allow(dead_code)]
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@ -24,17 +28,44 @@ mod c {
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    #[derive(Clone, Copy)]
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    pub struct EekRenderer(*const c_void);
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    // This is constructed only in C, no need for warnings
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    /// Just don't clone this for no reason.
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    #[allow(dead_code)]
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    #[repr(transparent)]
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    #[derive(Clone, Copy)]
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    pub struct GtkStyleContext(*const c_void);
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    extern "C" {
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        // Button and View inside CButtonPlace are safe to pass to C
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        // as long as they don't outlive the call
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        // and nothing dereferences them
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        #[allow(improper_ctypes)]
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        pub fn eek_render_button(
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        pub fn eek_renderer_get_scale_factor(
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            renderer: EekRenderer,
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        ) -> u32;
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        #[allow(improper_ctypes)]
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        pub fn eek_render_button_in_context(
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            scale_factor: u32,
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            cr: *mut cairo_sys::cairo_t,
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            button: *const Button,
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            ctx: GtkStyleContext,
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            bounds: Bounds,
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            icon_name: *const c_char,
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            label: *const c_char,
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        );
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        #[allow(improper_ctypes)]
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        pub fn eek_get_style_context_for_button(
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            renderer: EekRenderer,
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            name: *const c_char,
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            outline_name: *const c_char,
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            locked_class: *const c_char,
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            pressed: u64,
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            locked: u64,
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        ) -> GtkStyleContext;
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        #[allow(improper_ctypes)]
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        pub fn eek_put_style_context_for_button(
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            ctx: GtkStyleContext,
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            outline_name: *const c_char,
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            locked_class: *const c_char,
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        );
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    }
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@ -54,13 +85,16 @@ mod c {
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        layout.foreach_visible_button(|offset, button| {
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            let state = RefCell::borrow(&button.state).clone();
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            let active_mod = match &state.action {
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                Action::ApplyModifier(m) => active_modifiers.contains(m),
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                _ => false,
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            };
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            let locked = state.action.is_active(&layout.current_view)
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                | active_mod;
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            if state.pressed == keyboard::PressType::Pressed || locked {
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            let locked = LockedStyle::from_action(
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                &state.action,
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                &active_modifiers,
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                layout.get_view_latched(),
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                &layout.current_view,
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            );
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            if state.pressed == keyboard::PressType::Pressed
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                || locked != LockedStyle::Free
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            {
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                render_button_at_position(
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                    renderer, &cr,
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                    offset,
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@ -86,20 +120,55 @@ mod c {
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                renderer, &cr,
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                offset,
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                button.as_ref(),
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                keyboard::PressType::Released, false,
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                keyboard::PressType::Released,
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                LockedStyle::Free,
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            );
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        })
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    }
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}
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#[derive(Clone, Copy, PartialEq, Debug)]
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enum LockedStyle {
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    Free,
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    Latched,
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    Locked,
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}
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impl LockedStyle {
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    fn from_action(
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        action: &Action,
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		||||
        mods: &HashSet<Modifier>,
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		||||
        latched_view: &LatchedState,
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		||||
        current_view: &str,
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		||||
    ) -> LockedStyle {
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        let active_mod = match action {
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            Action::ApplyModifier(m) => mods.contains(m),
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		||||
            _ => false,
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		||||
        };
 | 
			
		||||
        
 | 
			
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        let active_view = action.is_active(current_view);
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		||||
        let latched_button = match latched_view {
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		||||
            LatchedState::Not => false,
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		||||
            LatchedState::FromView(view) => !action.has_locked_appearance_from(view),
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		||||
        };
 | 
			
		||||
        match (active_mod, active_view, latched_button) {
 | 
			
		||||
            // Modifiers don't latch.
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		||||
            (true, _, _) => LockedStyle::Locked,
 | 
			
		||||
            (false, true, false) => LockedStyle::Locked,
 | 
			
		||||
            (false, true, true) => LockedStyle::Latched,
 | 
			
		||||
            _ => LockedStyle::Free,
 | 
			
		||||
        }
 | 
			
		||||
    }
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
/// Renders a button at a position (button's own bounds ignored)
 | 
			
		||||
pub fn render_button_at_position(
 | 
			
		||||
fn render_button_at_position(
 | 
			
		||||
    renderer: c::EekRenderer,
 | 
			
		||||
    cr: &cairo::Context,
 | 
			
		||||
    position: Point,
 | 
			
		||||
    button: &Button,
 | 
			
		||||
    pressed: keyboard::PressType,
 | 
			
		||||
    locked: bool,
 | 
			
		||||
    locked: LockedStyle,
 | 
			
		||||
) {
 | 
			
		||||
    cr.save();
 | 
			
		||||
    cr.translate(position.x, position.y);
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		||||
@ -108,19 +177,110 @@ pub fn render_button_at_position(
 | 
			
		||||
        button.size.width, button.size.height
 | 
			
		||||
    );
 | 
			
		||||
    cr.clip();
 | 
			
		||||
    unsafe {
 | 
			
		||||
        c::eek_render_button(
 | 
			
		||||
 | 
			
		||||
    let scale_factor = unsafe {
 | 
			
		||||
        c::eek_renderer_get_scale_factor(renderer)
 | 
			
		||||
    };
 | 
			
		||||
    let bounds = button.get_bounds();
 | 
			
		||||
    let (label_c, icon_name_c) = match &button.label {
 | 
			
		||||
        Label::Text(text) => (text.as_ptr(), ptr::null()),
 | 
			
		||||
        Label::IconName(name) => {
 | 
			
		||||
            let l = unsafe {
 | 
			
		||||
                // CStr doesn't allocate anything, so it only points to
 | 
			
		||||
                // the 'static str, avoiding a memory leak
 | 
			
		||||
                CStr::from_bytes_with_nul_unchecked(b"icon\0")
 | 
			
		||||
            };
 | 
			
		||||
            (l.as_ptr(), name.as_ptr())
 | 
			
		||||
        },
 | 
			
		||||
    };
 | 
			
		||||
 | 
			
		||||
    with_button_context(
 | 
			
		||||
        renderer,
 | 
			
		||||
        button,
 | 
			
		||||
        pressed,
 | 
			
		||||
        locked,
 | 
			
		||||
        |ctx| unsafe {
 | 
			
		||||
            // TODO: split into separate procedures:
 | 
			
		||||
            // draw outline, draw label, draw icon.
 | 
			
		||||
            c::eek_render_button_in_context(
 | 
			
		||||
                scale_factor,
 | 
			
		||||
                cairo::Context::to_raw_none(&cr),
 | 
			
		||||
                *ctx,
 | 
			
		||||
                bounds,
 | 
			
		||||
                icon_name_c,
 | 
			
		||||
                label_c,
 | 
			
		||||
            )
 | 
			
		||||
        }
 | 
			
		||||
    );
 | 
			
		||||
 | 
			
		||||
    cr.restore();
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
fn with_button_context<R, F: FnOnce(&c::GtkStyleContext) -> R>(
 | 
			
		||||
    renderer: c::EekRenderer,
 | 
			
		||||
    button: &Button,
 | 
			
		||||
    pressed: keyboard::PressType,
 | 
			
		||||
    locked: LockedStyle,
 | 
			
		||||
    operation: F,
 | 
			
		||||
) -> R {
 | 
			
		||||
    let outline_name_c = button.outline_name.as_ptr();
 | 
			
		||||
    let locked_class_c = match locked {
 | 
			
		||||
        LockedStyle::Free => ptr::null(),
 | 
			
		||||
        LockedStyle::Locked => unsafe {
 | 
			
		||||
            CStr::from_bytes_with_nul_unchecked(b"locked\0").as_ptr()
 | 
			
		||||
        },
 | 
			
		||||
        LockedStyle::Latched => unsafe {
 | 
			
		||||
            CStr::from_bytes_with_nul_unchecked(b"latched\0").as_ptr()
 | 
			
		||||
        },
 | 
			
		||||
    };
 | 
			
		||||
    
 | 
			
		||||
    let ctx = unsafe {
 | 
			
		||||
        c::eek_get_style_context_for_button(
 | 
			
		||||
            renderer,
 | 
			
		||||
            cairo::Context::to_raw_none(&cr),
 | 
			
		||||
            button as *const Button,
 | 
			
		||||
            button.name.as_ptr(),
 | 
			
		||||
            outline_name_c,
 | 
			
		||||
            locked_class_c,
 | 
			
		||||
            pressed as u64,
 | 
			
		||||
            locked as u64,
 | 
			
		||||
        )
 | 
			
		||||
    };
 | 
			
		||||
    cr.restore();
 | 
			
		||||
    
 | 
			
		||||
    let r = operation(&ctx);
 | 
			
		||||
 | 
			
		||||
    unsafe {
 | 
			
		||||
        c::eek_put_style_context_for_button(
 | 
			
		||||
            ctx,
 | 
			
		||||
            outline_name_c,
 | 
			
		||||
            locked_class_c,
 | 
			
		||||
        )
 | 
			
		||||
    };
 | 
			
		||||
 | 
			
		||||
    r
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
pub fn queue_redraw(keyboard: EekGtkKeyboard) {
 | 
			
		||||
    let widget = unsafe { gtk::Widget::from_glib_none(keyboard.0) };
 | 
			
		||||
    widget.queue_draw();
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
#[cfg(test)]
 | 
			
		||||
mod test {
 | 
			
		||||
    use super::*;
 | 
			
		||||
 | 
			
		||||
    #[test]
 | 
			
		||||
    fn test_exit_only() {
 | 
			
		||||
        assert_eq!(
 | 
			
		||||
            LockedStyle::from_action(
 | 
			
		||||
                &Action::LockView {
 | 
			
		||||
                    lock: "ab".into(), 
 | 
			
		||||
                    unlock: "a".into(),
 | 
			
		||||
                    latches: true,
 | 
			
		||||
                    looks_locked_from: vec!["b".into()],
 | 
			
		||||
                },
 | 
			
		||||
                &HashSet::new(),
 | 
			
		||||
                &LatchedState::FromView("b".into()),
 | 
			
		||||
                "ab",
 | 
			
		||||
            ),
 | 
			
		||||
            LockedStyle::Locked,
 | 
			
		||||
        );
 | 
			
		||||
    }
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
@ -26,13 +26,6 @@ struct squeek_layout_state {
 | 
			
		||||
 | 
			
		||||
struct squeek_layout;
 | 
			
		||||
 | 
			
		||||
EekBounds squeek_button_get_bounds(const struct squeek_button*);
 | 
			
		||||
const char *squeek_button_get_label(const struct squeek_button*);
 | 
			
		||||
const char *squeek_button_get_icon_name(const struct squeek_button*);
 | 
			
		||||
const char *squeek_button_get_name(const struct squeek_button*);
 | 
			
		||||
const char *squeek_button_get_outline_name(const struct squeek_button*);
 | 
			
		||||
 | 
			
		||||
void squeek_button_print(const struct squeek_button* button);
 | 
			
		||||
 | 
			
		||||
struct transformation squeek_layout_calculate_transformation(
 | 
			
		||||
        const struct squeek_layout *layout,
 | 
			
		||||
 | 
			
		||||
							
								
								
									
										540
									
								
								src/layout.rs
									
									
									
									
									
								
							
							
						
						
									
										540
									
								
								src/layout.rs
									
									
									
									
									
								
							@ -41,9 +41,7 @@ pub mod c {
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    use super::*;
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    use gtk_sys;
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    use std::ffi::CStr;
 | 
			
		||||
    use std::os::raw::{ c_char, c_void };
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    use std::ptr;
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    use std::os::raw::c_void;
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    use std::ops::{ Add, Sub };
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@ -161,64 +159,6 @@ pub mod c {
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    pub struct LevelKeyboard(*const c_void);
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    // The following defined in Rust. TODO: wrap naked pointers to Rust data inside RefCells to prevent multiple writers
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    #[no_mangle]
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    pub extern "C"
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    fn squeek_button_get_bounds(button: *const ::layout::Button) -> Bounds {
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        let button = unsafe { &*button };
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        Bounds {
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            x: 0.0, y: 0.0,
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            width: button.size.width, height: button.size.height
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        }
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    }
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		||||
    #[no_mangle]
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    pub extern "C"
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    fn squeek_button_get_label(
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        button: *const ::layout::Button
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    ) -> *const c_char {
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        let button = unsafe { &*button };
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        match &button.label {
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            Label::Text(text) => text.as_ptr(),
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            // returning static strings to C is a bit cumbersome
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            Label::IconName(_) => unsafe {
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                // CStr doesn't allocate anything, so it only points to
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                // the 'static str, avoiding a memory leak
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                CStr::from_bytes_with_nul_unchecked(b"icon\0")
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            }.as_ptr(),
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        }
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    }
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    #[no_mangle]
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    pub extern "C"
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		||||
    fn squeek_button_get_icon_name(button: *const Button) -> *const c_char {
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        let button = unsafe { &*button };
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        match &button.label {
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            Label::Text(_) => ptr::null(),
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            Label::IconName(name) => name.as_ptr(),
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        }
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    }
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 | 
			
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    #[no_mangle]
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    pub extern "C"
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    fn squeek_button_get_name(button: *const Button) -> *const c_char {
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        let button = unsafe { &*button };
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        button.name.as_ptr()
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    }
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		||||
    #[no_mangle]
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		||||
    pub extern "C"
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		||||
    fn squeek_button_get_outline_name(button: *const Button) -> *const c_char {
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        let button = unsafe { &*button };
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        button.outline_name.as_ptr()
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    }
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    #[no_mangle]
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    pub extern "C"
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    fn squeek_button_print(button: *const ::layout::Button) {
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        let button = unsafe { &*button };
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        println!("{:?}", button);
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    }
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    /// Positions the layout contents within the available space.
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    /// The origin of the transformation is the point inside the margins.
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@ -484,6 +424,15 @@ pub struct Button {
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    pub state: Rc<RefCell<KeyState>>,
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}
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impl Button {
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    pub fn get_bounds(&self) -> c::Bounds {
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        c::Bounds {
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            x: 0.0, y: 0.0,
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            width: self.size.width, height: self.size.height,
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        }
 | 
			
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    }
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}
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/// The graphical representation of a row of buttons
 | 
			
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#[derive(Clone, Debug)]
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pub struct Row {
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@ -551,6 +500,7 @@ pub struct Spacing {
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    pub button: f64,
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}
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#[derive(Clone)]
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pub struct View {
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    /// Rows together with their offsets from the top left
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    rows: Vec<(c::Point, Row)>,
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@ -664,6 +614,19 @@ pub struct Margins {
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    pub right: f64,
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}
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#[derive(Clone, Debug, PartialEq)]
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pub enum LatchedState {
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    /// Holds view to return to.
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    FromView(String),
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    Not,
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}
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impl LatchedState {
 | 
			
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    pub fn is_latched(&self) -> bool {
 | 
			
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        self != &LatchedState::Not
 | 
			
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    }
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}
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 | 
			
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// TODO: split into sth like
 | 
			
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// Arrangement (views) + details (keymap) + State (keys)
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/// State of the UI, contains the backend as well
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@ -671,6 +634,12 @@ pub struct Layout {
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    pub margins: Margins,
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    pub kind: ArrangementKind,
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    pub current_view: String,
 | 
			
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 | 
			
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    // If current view is latched,
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    // clicking any button that emits an action (erase, submit, set modifier)
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    // will cause lock buttons to unlatch.
 | 
			
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    view_latched: LatchedState,
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 | 
			
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    // Views own the actual buttons which have state
 | 
			
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    // Maybe they should own UI only,
 | 
			
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    // and keys should be owned by a dedicated non-UI-State?
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@ -717,6 +686,7 @@ impl Layout {
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        Layout {
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            kind,
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            current_view: "base".to_owned(),
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            view_latched: LatchedState::Not,
 | 
			
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            views: data.views,
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            keymaps: data.keymaps,
 | 
			
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            pressed_keys: HashSet::new(),
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@ -742,6 +712,12 @@ impl Layout {
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        }
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    }
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 | 
			
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    // Layout is passed around mutably,
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    // so better keep the field away from direct access.
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    pub fn get_view_latched(&self) -> &LatchedState {
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        &self.view_latched
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    }
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 | 
			
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    /// Calculates size without margins
 | 
			
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    fn calculate_inner_size(&self) -> Size {
 | 
			
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        View::calculate_super_size(
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@ -817,8 +793,117 @@ impl Layout {
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        }
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        out
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    }
 | 
			
		||||
    
 | 
			
		||||
    fn apply_view_transition(
 | 
			
		||||
        &mut self,
 | 
			
		||||
        action: &Action,
 | 
			
		||||
    ) {
 | 
			
		||||
        let (transition, new_latched) = Layout::process_action_for_view(
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            action,
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		||||
            &self.current_view,
 | 
			
		||||
            &self.view_latched,
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		||||
        );
 | 
			
		||||
 | 
			
		||||
        match transition {
 | 
			
		||||
            ViewTransition::UnlatchAll => self.unstick_locks(),
 | 
			
		||||
            ViewTransition::ChangeTo(view) => try_set_view(self, view.into()),
 | 
			
		||||
            ViewTransition::NoChange => {},
 | 
			
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        };
 | 
			
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 | 
			
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        self.view_latched = new_latched;
 | 
			
		||||
    }
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 | 
			
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    /// Unlatch all latched keys,
 | 
			
		||||
    /// so that the new view is the one before first press.
 | 
			
		||||
    fn unstick_locks(&mut self) {
 | 
			
		||||
        if let LatchedState::FromView(name) = self.view_latched.clone() {
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		||||
            match self.set_view(name.clone()) {
 | 
			
		||||
                Ok(_) => { self.view_latched = LatchedState::Not; }
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                Err(e) => log_print!(
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                    logging::Level::Bug,
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                    "Bad view {}, can't unlatch ({:?})",
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                    name,
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		||||
                    e,
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                ),
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            }
 | 
			
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        }
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    }
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		||||
    /// Last bool is new latch state.
 | 
			
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    /// It doesn't make sense when the result carries UnlatchAll,
 | 
			
		||||
    /// but let's not be picky.
 | 
			
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    ///
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    /// Although the state is not defined at the keys
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    /// (it's in the relationship between view and action),
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    /// keys go through the following stages when clicked repeatedly: 
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    /// unlocked+unlatched -> locked+latched -> locked+unlatched
 | 
			
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    /// -> unlocked+unlatched
 | 
			
		||||
    fn process_action_for_view<'a>(
 | 
			
		||||
        action: &'a Action,
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		||||
        current_view: &str,
 | 
			
		||||
        latched: &LatchedState,
 | 
			
		||||
    ) -> (ViewTransition<'a>, LatchedState) {
 | 
			
		||||
        match action {
 | 
			
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            Action::Submit { text: _, keys: _ }
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                | Action::Erase
 | 
			
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                | Action::ApplyModifier(_)
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		||||
            => {
 | 
			
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                let t = match latched {
 | 
			
		||||
                    LatchedState::FromView(_) => ViewTransition::UnlatchAll,
 | 
			
		||||
                    LatchedState::Not => ViewTransition::NoChange,
 | 
			
		||||
                };
 | 
			
		||||
                (t, LatchedState::Not)
 | 
			
		||||
            },
 | 
			
		||||
            Action::SetView(view) => (
 | 
			
		||||
                ViewTransition::ChangeTo(view),
 | 
			
		||||
                LatchedState::Not,
 | 
			
		||||
            ),
 | 
			
		||||
            Action::LockView { lock, unlock, latches, looks_locked_from: _ } => {
 | 
			
		||||
                use self::ViewTransition as VT;
 | 
			
		||||
                let locked = action.is_locked(current_view);
 | 
			
		||||
                match (locked, latched, latches) {
 | 
			
		||||
                    // Was unlocked, now make locked but latched.
 | 
			
		||||
                    (false, LatchedState::Not, true) => (
 | 
			
		||||
                        VT::ChangeTo(lock),
 | 
			
		||||
                        LatchedState::FromView(current_view.into()),
 | 
			
		||||
                    ),
 | 
			
		||||
                    // Layout is latched for reason other than this button.
 | 
			
		||||
                    (false, LatchedState::FromView(view), true) => (
 | 
			
		||||
                        VT::ChangeTo(lock),
 | 
			
		||||
                        LatchedState::FromView(view.clone()),
 | 
			
		||||
                    ),
 | 
			
		||||
                    // Was latched, now only locked.
 | 
			
		||||
                    (true, LatchedState::FromView(_), true)
 | 
			
		||||
                        => (VT::NoChange, LatchedState::Not),
 | 
			
		||||
                    // Was unlocked, can't latch so now make fully locked.
 | 
			
		||||
                    (false, _, false)
 | 
			
		||||
                        => (VT::ChangeTo(lock), LatchedState::Not),
 | 
			
		||||
                    // Was locked, now make unlocked.
 | 
			
		||||
                    (true, _, _)
 | 
			
		||||
                        => (VT::ChangeTo(unlock), LatchedState::Not),
 | 
			
		||||
                }
 | 
			
		||||
            },
 | 
			
		||||
            _ => (ViewTransition::NoChange, latched.clone()),
 | 
			
		||||
        }
 | 
			
		||||
    }
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
#[derive(Debug, PartialEq)]
 | 
			
		||||
enum ViewTransition<'a> {
 | 
			
		||||
    ChangeTo(&'a str),
 | 
			
		||||
    UnlatchAll,
 | 
			
		||||
    NoChange,
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
fn try_set_view(layout: &mut Layout, view_name: &str) {
 | 
			
		||||
    layout.set_view(view_name.into())
 | 
			
		||||
        .or_print(
 | 
			
		||||
            logging::Problem::Bug,
 | 
			
		||||
            &format!("Bad view {}, ignoring", view_name),
 | 
			
		||||
        );
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
 | 
			
		||||
mod procedures {
 | 
			
		||||
    use super::*;
 | 
			
		||||
 | 
			
		||||
@ -897,67 +982,6 @@ pub struct UIBackend {
 | 
			
		||||
mod seat {
 | 
			
		||||
    use super::*;
 | 
			
		||||
 | 
			
		||||
    fn try_set_view(layout: &mut Layout, view_name: String) {
 | 
			
		||||
        layout.set_view(view_name.clone())
 | 
			
		||||
            .or_print(
 | 
			
		||||
                logging::Problem::Bug,
 | 
			
		||||
                &format!("Bad view {}, ignoring", view_name),
 | 
			
		||||
            );
 | 
			
		||||
    }
 | 
			
		||||
 | 
			
		||||
    /// A vessel holding an obligation to switch view.
 | 
			
		||||
    /// Use with #[must_use]
 | 
			
		||||
    struct ViewChange<'a> {
 | 
			
		||||
        layout: &'a mut Layout,
 | 
			
		||||
        view_name: Option<String>,
 | 
			
		||||
    }
 | 
			
		||||
    
 | 
			
		||||
    impl<'a> ViewChange<'a> {
 | 
			
		||||
        fn choose_view(self, view_name: String) -> ViewChange<'a> {
 | 
			
		||||
            ViewChange {
 | 
			
		||||
                view_name: Some(view_name),
 | 
			
		||||
                ..self
 | 
			
		||||
            }
 | 
			
		||||
        }
 | 
			
		||||
        fn apply(self) {
 | 
			
		||||
            if let Some(name) = self.view_name {
 | 
			
		||||
                try_set_view(self.layout, name);
 | 
			
		||||
            }
 | 
			
		||||
        }
 | 
			
		||||
    }
 | 
			
		||||
 | 
			
		||||
    /// Find all impermanent view changes and undo them in an arbitrary order.
 | 
			
		||||
    /// Return an obligation to actually switch the view.
 | 
			
		||||
    /// The final view is the "unlock" view
 | 
			
		||||
    /// from one of the currently stuck keys.
 | 
			
		||||
    // As long as only one stuck button is used, this should be fine.
 | 
			
		||||
    // This is guaranteed because pressing a lock button unlocks all others.
 | 
			
		||||
    // TODO: Make some broader guarantee about the resulting view,
 | 
			
		||||
    // e.g. by maintaining a stack of stuck keys.
 | 
			
		||||
    #[must_use]
 | 
			
		||||
    fn unstick_locks(layout: &mut Layout) -> ViewChange {
 | 
			
		||||
        let mut new_view = None;
 | 
			
		||||
        for key in layout.get_locked_keys().clone() {
 | 
			
		||||
            let key: &Rc<RefCell<KeyState>> = key.borrow();
 | 
			
		||||
            let key = RefCell::borrow(key);
 | 
			
		||||
            match &key.action {
 | 
			
		||||
                Action::LockView { lock: _, unlock: view } => {
 | 
			
		||||
                    new_view = Some(view.clone());
 | 
			
		||||
                },
 | 
			
		||||
                a => log_print!(
 | 
			
		||||
                    logging::Level::Bug,
 | 
			
		||||
                    "Non-locking action {:?} was found inside locked keys",
 | 
			
		||||
                    a,
 | 
			
		||||
                ),
 | 
			
		||||
            };
 | 
			
		||||
        }
 | 
			
		||||
        
 | 
			
		||||
        ViewChange {
 | 
			
		||||
            layout,
 | 
			
		||||
            view_name: new_view,
 | 
			
		||||
        }
 | 
			
		||||
    }
 | 
			
		||||
 | 
			
		||||
    pub fn handle_press_key(
 | 
			
		||||
        layout: &mut Layout,
 | 
			
		||||
        submission: &mut Submission,
 | 
			
		||||
@ -1017,37 +1041,22 @@ mod seat {
 | 
			
		||||
        };
 | 
			
		||||
        let action = key.action.clone();
 | 
			
		||||
 | 
			
		||||
        layout.apply_view_transition(&action);
 | 
			
		||||
 | 
			
		||||
        // update
 | 
			
		||||
        let key = key.into_released();
 | 
			
		||||
 | 
			
		||||
        // process changes
 | 
			
		||||
        // process non-view switching
 | 
			
		||||
        match action {
 | 
			
		||||
            Action::Submit { text: _, keys: _ }
 | 
			
		||||
                | Action::Erase
 | 
			
		||||
            => {
 | 
			
		||||
                unstick_locks(layout).apply();
 | 
			
		||||
                submission.handle_release(KeyState::get_id(rckey), time);
 | 
			
		||||
            },
 | 
			
		||||
            Action::SetView(view) => {
 | 
			
		||||
                try_set_view(layout, view)
 | 
			
		||||
            },
 | 
			
		||||
            Action::LockView { lock, unlock } => {
 | 
			
		||||
                let gets_locked = !key.action.is_locked(&layout.current_view);
 | 
			
		||||
                unstick_locks(layout)
 | 
			
		||||
                    // It doesn't matter what the resulting view should be,
 | 
			
		||||
                    // it's getting changed anyway.
 | 
			
		||||
                    .choose_view(
 | 
			
		||||
                        match gets_locked {
 | 
			
		||||
                            true => lock.clone(),
 | 
			
		||||
                            false => unlock.clone(),
 | 
			
		||||
                        }
 | 
			
		||||
                    )
 | 
			
		||||
                    .apply()
 | 
			
		||||
            },
 | 
			
		||||
            Action::ApplyModifier(modifier) => {
 | 
			
		||||
                // FIXME: key id is unneeded with stateless locks
 | 
			
		||||
                let key_id = KeyState::get_id(rckey);
 | 
			
		||||
                let gets_locked = !submission.is_modifier_active(modifier.clone());
 | 
			
		||||
                let gets_locked = !submission.is_modifier_active(modifier);
 | 
			
		||||
                match gets_locked {
 | 
			
		||||
                    true => submission.handle_add_modifier(
 | 
			
		||||
                        key_id,
 | 
			
		||||
@ -1082,6 +1091,8 @@ mod seat {
 | 
			
		||||
                    }
 | 
			
		||||
                }
 | 
			
		||||
            },
 | 
			
		||||
            // Other keys are handled in view switcher before.
 | 
			
		||||
            _ => {}
 | 
			
		||||
        };
 | 
			
		||||
 | 
			
		||||
        let pointer = ::util::Pointer(rckey.clone());
 | 
			
		||||
@ -1099,14 +1110,20 @@ mod test {
 | 
			
		||||
    use std::ffi::CString;
 | 
			
		||||
    use ::keyboard::PressType;
 | 
			
		||||
 | 
			
		||||
    pub fn make_state() -> Rc<RefCell<::keyboard::KeyState>> {
 | 
			
		||||
    pub fn make_state_with_action(action: Action)
 | 
			
		||||
        -> Rc<RefCell<::keyboard::KeyState>>
 | 
			
		||||
    {
 | 
			
		||||
        Rc::new(RefCell::new(::keyboard::KeyState {
 | 
			
		||||
            pressed: PressType::Released,
 | 
			
		||||
            keycodes: Vec::new(),
 | 
			
		||||
            action: Action::SetView("default".into()),
 | 
			
		||||
            action,
 | 
			
		||||
        }))
 | 
			
		||||
    }
 | 
			
		||||
 | 
			
		||||
    pub fn make_state() -> Rc<RefCell<::keyboard::KeyState>> {
 | 
			
		||||
        make_state_with_action(Action::SetView("default".into()))
 | 
			
		||||
    }
 | 
			
		||||
 | 
			
		||||
    pub fn make_button_with_state(
 | 
			
		||||
        name: String,
 | 
			
		||||
        state: Rc<RefCell<::keyboard::KeyState>>,
 | 
			
		||||
@ -1120,6 +1137,242 @@ mod test {
 | 
			
		||||
        })
 | 
			
		||||
    }
 | 
			
		||||
    
 | 
			
		||||
    #[test]
 | 
			
		||||
    fn latch_lock_unlock() {
 | 
			
		||||
        let action = Action::LockView {
 | 
			
		||||
            lock: "lock".into(),
 | 
			
		||||
            unlock: "unlock".into(),
 | 
			
		||||
            latches: true,
 | 
			
		||||
            looks_locked_from: vec![],
 | 
			
		||||
        };
 | 
			
		||||
 | 
			
		||||
        assert_eq!(
 | 
			
		||||
            Layout::process_action_for_view(&action, "unlock", &LatchedState::Not),
 | 
			
		||||
            (ViewTransition::ChangeTo("lock"), LatchedState::FromView("unlock".into())),
 | 
			
		||||
        );
 | 
			
		||||
 | 
			
		||||
        assert_eq!(
 | 
			
		||||
            Layout::process_action_for_view(&action, "lock", &LatchedState::FromView("unlock".into())),
 | 
			
		||||
            (ViewTransition::NoChange, LatchedState::Not),
 | 
			
		||||
        );
 | 
			
		||||
 | 
			
		||||
        assert_eq!(
 | 
			
		||||
            Layout::process_action_for_view(&action, "lock", &LatchedState::Not),
 | 
			
		||||
            (ViewTransition::ChangeTo("unlock"), LatchedState::Not),
 | 
			
		||||
        );
 | 
			
		||||
 | 
			
		||||
        assert_eq!(
 | 
			
		||||
            Layout::process_action_for_view(&Action::Erase, "lock", &LatchedState::FromView("base".into())),
 | 
			
		||||
            (ViewTransition::UnlatchAll, LatchedState::Not),
 | 
			
		||||
        );
 | 
			
		||||
    }
 | 
			
		||||
 | 
			
		||||
    #[test]
 | 
			
		||||
    fn latch_pop_layout() {
 | 
			
		||||
        let switch = Action::LockView {
 | 
			
		||||
            lock: "locked".into(),
 | 
			
		||||
            unlock: "base".into(),
 | 
			
		||||
            latches: true,
 | 
			
		||||
            looks_locked_from: vec![],
 | 
			
		||||
        };
 | 
			
		||||
        
 | 
			
		||||
        let submit = Action::Erase;
 | 
			
		||||
 | 
			
		||||
        let view = View::new(vec![(
 | 
			
		||||
            0.0,
 | 
			
		||||
            Row::new(vec![
 | 
			
		||||
                (
 | 
			
		||||
                    0.0,
 | 
			
		||||
                    make_button_with_state(
 | 
			
		||||
                        "switch".into(),
 | 
			
		||||
                        make_state_with_action(switch.clone())
 | 
			
		||||
                    ),
 | 
			
		||||
                ),
 | 
			
		||||
                (
 | 
			
		||||
                    1.0,
 | 
			
		||||
                    make_button_with_state(
 | 
			
		||||
                        "submit".into(),
 | 
			
		||||
                        make_state_with_action(submit.clone())
 | 
			
		||||
                    ),
 | 
			
		||||
                ),
 | 
			
		||||
            ]),
 | 
			
		||||
        )]);
 | 
			
		||||
 | 
			
		||||
        let mut layout = Layout {
 | 
			
		||||
            current_view: "base".into(),
 | 
			
		||||
            view_latched: LatchedState::Not,
 | 
			
		||||
            keymaps: Vec::new(),
 | 
			
		||||
            kind: ArrangementKind::Base,
 | 
			
		||||
            pressed_keys: HashSet::new(),
 | 
			
		||||
            margins: Margins {
 | 
			
		||||
                top: 0.0,
 | 
			
		||||
                left: 0.0,
 | 
			
		||||
                right: 0.0,
 | 
			
		||||
                bottom: 0.0,
 | 
			
		||||
            },
 | 
			
		||||
            views: hashmap! {
 | 
			
		||||
                // Both can use the same structure.
 | 
			
		||||
                // Switching doesn't depend on the view shape
 | 
			
		||||
                // as long as the switching button is present.
 | 
			
		||||
                "base".into() => (c::Point { x: 0.0, y: 0.0 }, view.clone()),
 | 
			
		||||
                "locked".into() => (c::Point { x: 0.0, y: 0.0 }, view),
 | 
			
		||||
            },
 | 
			
		||||
        };        
 | 
			
		||||
 | 
			
		||||
        // Basic cycle
 | 
			
		||||
        layout.apply_view_transition(&switch);
 | 
			
		||||
        assert_eq!(&layout.current_view, "locked");
 | 
			
		||||
        layout.apply_view_transition(&switch);
 | 
			
		||||
        assert_eq!(&layout.current_view, "locked");
 | 
			
		||||
        layout.apply_view_transition(&submit);
 | 
			
		||||
        assert_eq!(&layout.current_view, "locked");
 | 
			
		||||
        layout.apply_view_transition(&switch);
 | 
			
		||||
        assert_eq!(&layout.current_view, "base");
 | 
			
		||||
        layout.apply_view_transition(&switch);
 | 
			
		||||
        // Unlatch
 | 
			
		||||
        assert_eq!(&layout.current_view, "locked");
 | 
			
		||||
        layout.apply_view_transition(&submit);
 | 
			
		||||
        assert_eq!(&layout.current_view, "base");
 | 
			
		||||
    }
 | 
			
		||||
 | 
			
		||||
    #[test]
 | 
			
		||||
    fn reverse_unlatch_layout() {
 | 
			
		||||
        let switch = Action::LockView {
 | 
			
		||||
            lock: "locked".into(),
 | 
			
		||||
            unlock: "base".into(),
 | 
			
		||||
            latches: true,
 | 
			
		||||
            looks_locked_from: vec![],
 | 
			
		||||
        };
 | 
			
		||||
        
 | 
			
		||||
        let unswitch = Action::LockView {
 | 
			
		||||
            lock: "locked".into(),
 | 
			
		||||
            unlock: "unlocked".into(),
 | 
			
		||||
            latches: false,
 | 
			
		||||
            looks_locked_from: vec![],
 | 
			
		||||
        };
 | 
			
		||||
        
 | 
			
		||||
        let submit = Action::Erase;
 | 
			
		||||
 | 
			
		||||
        let view = View::new(vec![(
 | 
			
		||||
            0.0,
 | 
			
		||||
            Row::new(vec![
 | 
			
		||||
                (
 | 
			
		||||
                    0.0,
 | 
			
		||||
                    make_button_with_state(
 | 
			
		||||
                        "switch".into(),
 | 
			
		||||
                        make_state_with_action(switch.clone())
 | 
			
		||||
                    ),
 | 
			
		||||
                ),
 | 
			
		||||
                (
 | 
			
		||||
                    1.0,
 | 
			
		||||
                    make_button_with_state(
 | 
			
		||||
                        "submit".into(),
 | 
			
		||||
                        make_state_with_action(submit.clone())
 | 
			
		||||
                    ),
 | 
			
		||||
                ),
 | 
			
		||||
            ]),
 | 
			
		||||
        )]);
 | 
			
		||||
 | 
			
		||||
        let mut layout = Layout {
 | 
			
		||||
            current_view: "base".into(),
 | 
			
		||||
            view_latched: LatchedState::Not,
 | 
			
		||||
            keymaps: Vec::new(),
 | 
			
		||||
            kind: ArrangementKind::Base,
 | 
			
		||||
            pressed_keys: HashSet::new(),
 | 
			
		||||
            margins: Margins {
 | 
			
		||||
                top: 0.0,
 | 
			
		||||
                left: 0.0,
 | 
			
		||||
                right: 0.0,
 | 
			
		||||
                bottom: 0.0,
 | 
			
		||||
            },
 | 
			
		||||
            views: hashmap! {
 | 
			
		||||
                // Both can use the same structure.
 | 
			
		||||
                // Switching doesn't depend on the view shape
 | 
			
		||||
                // as long as the switching button is present.
 | 
			
		||||
                "base".into() => (c::Point { x: 0.0, y: 0.0 }, view.clone()),
 | 
			
		||||
                "locked".into() => (c::Point { x: 0.0, y: 0.0 }, view.clone()),
 | 
			
		||||
                "unlocked".into() => (c::Point { x: 0.0, y: 0.0 }, view),
 | 
			
		||||
            },
 | 
			
		||||
        };        
 | 
			
		||||
 | 
			
		||||
        layout.apply_view_transition(&switch);
 | 
			
		||||
        assert_eq!(&layout.current_view, "locked");
 | 
			
		||||
        layout.apply_view_transition(&unswitch);
 | 
			
		||||
        assert_eq!(&layout.current_view, "unlocked");
 | 
			
		||||
    }
 | 
			
		||||
 | 
			
		||||
    #[test]
 | 
			
		||||
    fn latch_twopop_layout() {
 | 
			
		||||
        let switch = Action::LockView {
 | 
			
		||||
            lock: "locked".into(),
 | 
			
		||||
            unlock: "base".into(),
 | 
			
		||||
            latches: true,
 | 
			
		||||
            looks_locked_from: vec![],
 | 
			
		||||
        };
 | 
			
		||||
        
 | 
			
		||||
        let switch_again = Action::LockView {
 | 
			
		||||
            lock: "ĄĘ".into(),
 | 
			
		||||
            unlock: "locked".into(),
 | 
			
		||||
            latches: true,
 | 
			
		||||
            looks_locked_from: vec![],
 | 
			
		||||
        };
 | 
			
		||||
        
 | 
			
		||||
        let submit = Action::Erase;
 | 
			
		||||
 | 
			
		||||
        let view = View::new(vec![(
 | 
			
		||||
            0.0,
 | 
			
		||||
            Row::new(vec![
 | 
			
		||||
                (
 | 
			
		||||
                    0.0,
 | 
			
		||||
                    make_button_with_state(
 | 
			
		||||
                        "switch".into(),
 | 
			
		||||
                        make_state_with_action(switch.clone())
 | 
			
		||||
                    ),
 | 
			
		||||
                ),
 | 
			
		||||
                (
 | 
			
		||||
                    1.0,
 | 
			
		||||
                    make_button_with_state(
 | 
			
		||||
                        "submit".into(),
 | 
			
		||||
                        make_state_with_action(submit.clone())
 | 
			
		||||
                    ),
 | 
			
		||||
                ),
 | 
			
		||||
            ]),
 | 
			
		||||
        )]);
 | 
			
		||||
 | 
			
		||||
        let mut layout = Layout {
 | 
			
		||||
            current_view: "base".into(),
 | 
			
		||||
            view_latched: LatchedState::Not,
 | 
			
		||||
            keymaps: Vec::new(),
 | 
			
		||||
            kind: ArrangementKind::Base,
 | 
			
		||||
            pressed_keys: HashSet::new(),
 | 
			
		||||
            margins: Margins {
 | 
			
		||||
                top: 0.0,
 | 
			
		||||
                left: 0.0,
 | 
			
		||||
                right: 0.0,
 | 
			
		||||
                bottom: 0.0,
 | 
			
		||||
            },
 | 
			
		||||
            views: hashmap! {
 | 
			
		||||
                // All can use the same structure.
 | 
			
		||||
                // Switching doesn't depend on the view shape
 | 
			
		||||
                // as long as the switching button is present.
 | 
			
		||||
                "base".into() => (c::Point { x: 0.0, y: 0.0 }, view.clone()),
 | 
			
		||||
                "locked".into() => (c::Point { x: 0.0, y: 0.0 }, view.clone()),
 | 
			
		||||
                "ĄĘ".into() => (c::Point { x: 0.0, y: 0.0 }, view),
 | 
			
		||||
            },
 | 
			
		||||
        };        
 | 
			
		||||
 | 
			
		||||
        // Latch twice, then Ąto-unlatch across 2 levels
 | 
			
		||||
        layout.apply_view_transition(&switch);
 | 
			
		||||
        println!("{:?}", layout.view_latched);
 | 
			
		||||
        assert_eq!(&layout.current_view, "locked");
 | 
			
		||||
        layout.apply_view_transition(&switch_again);
 | 
			
		||||
        println!("{:?}", layout.view_latched);
 | 
			
		||||
        assert_eq!(&layout.current_view, "ĄĘ");
 | 
			
		||||
        layout.apply_view_transition(&submit);
 | 
			
		||||
        println!("{:?}", layout.view_latched);
 | 
			
		||||
        assert_eq!(&layout.current_view, "base");
 | 
			
		||||
    }
 | 
			
		||||
 | 
			
		||||
    #[test]
 | 
			
		||||
    fn check_centering() {
 | 
			
		||||
        //    A B
 | 
			
		||||
@ -1192,6 +1445,7 @@ mod test {
 | 
			
		||||
        ]);
 | 
			
		||||
        let layout = Layout {
 | 
			
		||||
            current_view: String::new(),
 | 
			
		||||
            view_latched: LatchedState::Not,
 | 
			
		||||
            keymaps: Vec::new(),
 | 
			
		||||
            kind: ArrangementKind::Base,
 | 
			
		||||
            pressed_keys: HashSet::new(),
 | 
			
		||||
 | 
			
		||||
@ -1,9 +0,0 @@
 | 
			
		||||
#ifndef POPOVER_H__
 | 
			
		||||
#define POPOVER_H__
 | 
			
		||||
 | 
			
		||||
#include <gtk/gtk.h>
 | 
			
		||||
#include "eek/eek-keyboard.h"
 | 
			
		||||
 | 
			
		||||
void squeek_popover_show(GtkWidget*, struct button_place);
 | 
			
		||||
 | 
			
		||||
#endif
 | 
			
		||||
		Reference in New Issue
	
	Block a user