474 lines
14 KiB
Rust
474 lines
14 KiB
Rust
mod interfaces;
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use crate::interfaces::*;
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use gdk_pixbuf_sys::*;
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use gdk_sys::*;
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use gio_sys::*;
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use glib_sys::*;
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use gobject_sys::*;
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use gtk_sys::*;
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use maraiah::{c_str, durandal::ffi};
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use std::{cell::RefCell, rc::Rc};
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const APP_ID: ffi::NT = c_str!("net.greyserv.maraiah.tycho");
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const B_ADJ_M_HORZ: ffi::NT = c_str!("adj-map-horz");
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const B_ADJ_M_VERT: ffi::NT = c_str!("adj-map-vert");
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const B_BTN_ABOUT: ffi::NT = c_str!("btn-about");
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const B_BTN_M_PROP: ffi::NT = c_str!("btn-show-map-prop");
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const B_BTN_M_TOOL: ffi::NT = c_str!("btn-show-map-tools");
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const B_BTN_M_VIEW: ffi::NT = c_str!("btn-show-map-view");
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const B_BTN_NEW: ffi::NT = c_str!("btn-new");
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const B_BTN_OPEN: ffi::NT = c_str!("btn-open");
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const B_BTN_QUIT: ffi::NT = c_str!("btn-quit");
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const B_DLG_ABOUT: ffi::NT = c_str!("dlg-about");
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const B_DRAW_AREA: ffi::NT = c_str!("draw-area");
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const B_WIN_MAIN: ffi::NT = c_str!("win-main");
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const B_WIN_M_PROP: ffi::NT = c_str!("win-map-prop");
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const B_WIN_M_TOOL: ffi::NT = c_str!("win-map-tools");
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const B_WIN_M_VIEW: ffi::NT = c_str!("win-map-view");
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const E_ACTIVATE: ffi::NT = c_str!("activate");
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const E_DELETE: ffi::NT = c_str!("delete-event");
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const E_DESTROY: ffi::NT = c_str!("destroy");
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const E_DRAW: ffi::NT = c_str!("draw");
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const E_SHUTDOWN: ffi::NT = c_str!("shutdown");
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const IM_ABOUT: ffi::NT = c_str!("/net/greyserv/maraiah/tycho/tycho2.png");
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const IM_NOMAP: ffi::NT = c_str!("/net/greyserv/maraiah/tycho/tycho1.png");
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const PATH_BUILDER: ffi::NT = c_str!("/net/greyserv/maraiah/tycho/ui");
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const PATH_CSS: ffi::NT = c_str!("/net/greyserv/maraiah/tycho/css");
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// Called when the application activates in order to set everything up.
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unsafe extern "C" fn app_activate(app: *mut GtkApplication, _: gpointer)
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{
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// Callback to finalize the reference.
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unsafe extern "C" fn c_done(_: *mut GtkWidget, ptr: gpointer)
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{
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let edit = Rc::from_raw(ptr as *const MapEditorRef);
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assert_eq!(Rc::strong_count(&edit), 1);
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}
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let b = Refc::new(gtk_builder_new_from_resource(PATH_BUILDER));
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let edit = MapEditor{edit: Default::default(),
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draw: Refc::own(get_obj(&b, B_DRAW_AREA))};
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let edit = RefCell::new(edit);
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let edit = Rc::new(edit);
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setup_css();
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setup_draw_area(&b, edit.clone());
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setup_win_map_view(&b);
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setup_win_map_tools(&b);
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setup_win_map_prop(&b);
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setup_about_dlg(&b);
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setup_win_main(&b, app, edit.clone());
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connect(app, E_SHUTDOWN, c_done as _, Rc::into_raw(edit));
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}
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// Sets up the map view window's drawing area.
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unsafe fn setup_draw_area(b: &Refc<GtkBuilder>, edit: Rc<MapEditorRef>)
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{
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// All of the state necessary for the drawing area.
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struct RenderState
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{
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im_nomap: Refc<'static, GdkPixbuf>,
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ax: Refc<'static, GtkAdjustment>,
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ay: Refc<'static, GtkAdjustment>,
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edit: Rc<MapEditorRef>,
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}
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// Callback to finalize the drawing area.
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unsafe extern "C" fn c_done(_: *mut GtkWidget, rend: gpointer)
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{
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Box::from_raw(rend as *mut RenderState);
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}
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// Callback to draw on the drawing area.
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unsafe extern "C" fn c_draw(wid: *mut GtkWidget,
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ctx: *mut cairo_sys::cairo_t,
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rend: gpointer)
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-> gboolean
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{
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let rend = &mut *(rend as *mut RenderState);
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let w = f64::from(gtk_widget_get_allocated_width(wid));
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let h = f64::from(gtk_widget_get_allocated_height(wid));
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gtk_adjustment_set_lower(*rend.ax, 0.0);
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gtk_adjustment_set_upper(*rend.ax, w);
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gtk_adjustment_set_lower(*rend.ay, 0.0);
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gtk_adjustment_set_upper(*rend.ay, h);
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let im = CrImage(*rend.im_nomap);
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let mut dr = CrDrawArea::new(ctx, w, h);
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rend.edit.borrow().draw(&mut dr, &im);
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1
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}
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let wid = get_obj::<GtkDrawingArea>(b, B_DRAW_AREA);
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// get all of the necessary state and related objects
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let ax = Refc::own(get_obj(b, B_ADJ_M_HORZ));
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let ay = Refc::own(get_obj(b, B_ADJ_M_VERT));
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let im_nomap = Refc::new(load_img(IM_NOMAP));
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let rend = RenderState{im_nomap, ax, ay, edit};
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let rend = Box::into_raw(Box::new(rend));
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connect(wid, E_DESTROY, c_done as _, rend);
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connect(wid, E_DRAW, c_draw as _, rend);
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}
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// Sets up the map view window.
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unsafe fn setup_win_map_view(b: &Refc<GtkBuilder>)
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{
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let win = get_obj::<GtkWindow >(b, B_WIN_M_VIEW);
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let btn = get_obj::<GtkMenuItem>(b, B_BTN_M_VIEW);
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connect_hide(win);
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connect_show(btn, win);
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}
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// Sets up the map tools window.
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unsafe fn setup_win_map_tools(b: &Refc<GtkBuilder>)
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{
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let win = get_obj::<GtkWindow >(b, B_WIN_M_TOOL);
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let btn = get_obj::<GtkMenuItem>(b, B_BTN_M_TOOL);
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connect_hide(win);
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connect_show(btn, win);
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}
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// Sets up the map properties window.
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unsafe fn setup_win_map_prop(b: &Refc<GtkBuilder>)
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{
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let win = get_obj::<GtkWindow >(b, B_WIN_M_PROP);
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let btn = get_obj::<GtkMenuItem>(b, B_BTN_M_PROP);
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connect_hide(win);
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connect_show(btn, win);
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}
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// Sets up the about dialogue.
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unsafe fn setup_about_dlg(b: &Refc<GtkBuilder>)
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{
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// Callback to show the dialogue when the "About" button is pressed, and
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// hide it when the "Close" button is pressed on it.
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unsafe extern "C" fn c_show_act(_: *mut GtkWidget, dlg: gpointer)
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{
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gtk_dialog_run(dlg as _);
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gtk_widget_hide(dlg as _);
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}
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let dlg = get_obj::<GtkAboutDialog>(b, B_DLG_ABOUT);
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let btn = get_obj::<GtkMenuItem >(b, B_BTN_ABOUT);
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let it = env!("CARGO_PKG_AUTHORS").split(';');
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let mut v = ffi::CStringVec::new_from_iter(it).unwrap();
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let img = Refc::new(load_img(IM_ABOUT));
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gtk_about_dialog_set_authors(dlg, v.as_mut_ptr());
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gtk_about_dialog_set_version(dlg, c_str!(env!("CARGO_PKG_VERSION")));
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gtk_about_dialog_set_website(dlg, c_str!(env!("CARGO_PKG_HOMEPAGE")));
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gtk_about_dialog_set_logo(dlg, *img);
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connect_hide(dlg);
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connect(btn, E_ACTIVATE, c_show_act as _, dlg);
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}
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// Sets up explicit window finalization for the main window.
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unsafe fn setup_explicit_drop(b: &Refc<GtkBuilder>, win: *mut GtkWindow)
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{
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// Callback to explicitly finalize all windows on exit.
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unsafe extern "C" fn c_done(_: *mut GtkWidget, exp_del: gpointer)
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{
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let exp_del = Box::from_raw(exp_del as *mut Vec<*mut GtkWindow>);
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for win in *exp_del {
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gtk_widget_destroy(win as _);
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}
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}
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// we need to explicitly drop other windows on exit, which means we need to
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// create a list of them to send to the callback
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let mut exp_del = Vec::new();
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// so, we get all of the objects from the builder, and iterate through them
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let head = gtk_builder_get_objects(**b);
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let mut lst = &*head;
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loop {
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let obj = lst.data as *mut GObject;
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// while this is well-defined, it is a weird way of doing it, because
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// this exact method of checking types isn't fully documented. we can't
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// use the macros for this functionality because we're not using C, so we
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// use the underlying function calls. again, get jacked, punk.
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if g_type_check_instance_is_a(obj as _, gtk_window_get_type()) != 0 {
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let owin = obj as *mut GtkWindow;
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if owin != win {
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exp_del.push(owin);
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}
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}
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let nx = lst.next;
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if nx != ffi::null_mut() {
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lst = &*nx;
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} else {
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break;
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}
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}
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g_slist_free(head);
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let exp_del = Box::into_raw(Box::new(exp_del));
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connect(win, E_DESTROY, c_done as _, exp_del);
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}
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// Sets up the main menu window.
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unsafe fn setup_win_main(b: &Refc<GtkBuilder>,
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app: *mut GtkApplication,
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edit: Rc<MapEditorRef>)
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{
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// Callback to close the window when the "Quit" button is pressed.
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unsafe extern "C" fn c_quit_act(_: *mut GtkWidget, win: gpointer)
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{
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gtk_window_close(win as _);
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}
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// Callback to create a new map when the "New" button is pressed.
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unsafe extern "C" fn c_new_act(_: *mut GtkWidget, edit: gpointer)
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{
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let edit = &*(edit as *const MapEditorRef);
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let mut edit = edit.borrow_mut();
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if edit.is_opened() {
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let titl = c_str!("Confirm");
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let text = c_str!("Are you sure you want to create a new project? \
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Unsaved data may be lost.");
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if !run_ok_cancel_dlg(titl, text) {
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return;
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}
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}
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edit.open_new();
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edit.cause_update();
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}
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// Callback to open an existing map when the "Open" button is pressed.
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unsafe extern "C" fn c_open_act(_: *mut GtkWidget, edit: gpointer)
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{
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let edit = &*(edit as *const MapEditorRef);
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let mut edit = edit.borrow_mut();
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if edit.is_opened() {
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let titl = c_str!("Confirm");
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let text = c_str!("Are you sure you want to open this project? \
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Unsaved data may be lost.");
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if !run_ok_cancel_dlg(titl, text) {
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return;
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}
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}
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if let Some(path) = run_file_chooser_open() {
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// TODO: handle errors gracefully
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let fp = std::fs::File::open(&path).unwrap();
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let mm = memmap::Mmap::map(&fp).unwrap();
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edit.open_buf(&mm);
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edit.cause_update();
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}
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}
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// set up main window
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let win = get_obj(b, B_WIN_MAIN);
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setup_explicit_drop(b, win);
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gtk_window_set_application(win, app);
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gtk_widget_show_all(win as _);
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// set up buttons
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let btn = get_obj::<GtkMenuItem>(b, B_BTN_QUIT);
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connect(btn, E_ACTIVATE, c_quit_act as _, win);
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let btn = get_obj::<GtkMenuItem>(b, B_BTN_NEW);
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connect(btn, E_ACTIVATE, c_new_act as _, connect_ref(btn, edit.clone()));
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let btn = get_obj::<GtkMenuItem>(b, B_BTN_OPEN);
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connect(btn, E_ACTIVATE, c_open_act as _, connect_ref(btn, edit.clone()));
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}
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// Sets up the CSS styling providers.
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unsafe fn setup_css()
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{
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let css = Refc::new(gtk_css_provider_new());
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gtk_css_provider_load_from_resource(*css, PATH_CSS);
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let scr = gdk_screen_get_default();
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let pri = GTK_STYLE_PROVIDER_PRIORITY_APPLICATION as u32;
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gtk_style_context_add_provider_for_screen(scr, *css as _, pri);
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}
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// Runs a modal OK/Cancel dialogue.
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unsafe fn run_ok_cancel_dlg(title: ffi::NT, text: ffi::NT) -> bool
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{
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let flags = GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT;
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let dlg = gtk_dialog_new_with_buttons(title,
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ffi::null_mut(),
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flags,
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c_str!("_OK"),
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GTK_RESPONSE_ACCEPT,
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c_str!("_Cancel"),
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GTK_RESPONSE_REJECT,
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ffi::null_mut_void());
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let area = gtk_dialog_get_content_area(dlg as _);
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let labl = gtk_label_new(text);
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gtk_container_add(area as _, labl);
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gtk_widget_show_all(area as _);
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let res = gtk_dialog_run(dlg as _);
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gtk_widget_destroy(dlg);
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res == GTK_RESPONSE_ACCEPT
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}
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// Runs a modal Open File dialogue.
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unsafe fn run_file_chooser_open() -> Option<String>
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{
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let action = GTK_FILE_CHOOSER_ACTION_OPEN;
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let dlg = gtk_file_chooser_dialog_new(c_str!("Open File"),
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ffi::null_mut(),
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action,
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c_str!("_Cancel"),
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GTK_RESPONSE_CANCEL,
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c_str!("_Open"),
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GTK_RESPONSE_ACCEPT,
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ffi::null_mut_void());
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let res = gtk_dialog_run(dlg as _);
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let ret = if res == GTK_RESPONSE_ACCEPT {
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let fna = gtk_file_chooser_get_filename(dlg as _);
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let own = ffi::CStr::from_ptr(fna);
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let own = own.to_str().ok()?.to_owned();
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g_free(fna as _);
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Some(own)
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} else {
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None
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};
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gtk_widget_destroy(dlg);
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ret
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}
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// Connects a handler that hides a toplevel widget when deleted.
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unsafe fn connect_hide<T>(wid: *mut T)
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{
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// Callback to hide the widget.
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unsafe extern "C" fn c_hide_del(wid: *mut GtkWidget,
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_: *mut GdkEvent,
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_: gpointer)
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{
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gtk_widget_hide(wid);
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}
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connect(wid, E_DELETE, c_hide_del as _, ffi::null_void());
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}
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// Connects a handler that shows a widget when activated.
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unsafe fn connect_show<T, U>(btn: *mut T, wid: *mut U)
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{
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// Callback to show the widget.
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unsafe extern "C" fn c_show_act(_: *mut GtkWidget, wid: gpointer)
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{
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gtk_widget_show_all(wid as _);
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}
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connect(btn, E_ACTIVATE, c_show_act as _, wid);
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}
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// Connects the map editor reference to a widget.
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unsafe fn connect_ref<T>(obj: *mut T, rc: Rc<MapEditorRef>)
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-> *const MapEditorRef
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{
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// Callback to finalize the reference.
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unsafe extern "C" fn c_done(_: *mut GtkWidget, ptr: gpointer)
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{
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Rc::from_raw(ptr as *const MapEditorRef);
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}
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let ptr = Rc::into_raw(rc);
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connect(obj, E_DESTROY, c_done as _, ptr);
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ptr
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}
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// Gets an object from a `GtkBuilder`.
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unsafe fn get_obj<T>(b: &Refc<GtkBuilder>, name: ffi::NT) -> *mut T
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{
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gtk_builder_get_object(**b, name) as _
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}
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// Connects a signal handler.
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unsafe fn connect<T, U>(obj: *mut T, name: ffi::NT, cb: gpointer, d: *const U)
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{
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let cb = std::mem::transmute(cb);
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g_signal_connect_data(obj as _, name, cb, d as _, None, 0);
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}
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// Loads a `Pixbuf` from a resource.
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unsafe fn load_img(path: ffi::NT) -> *mut GdkPixbuf
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{
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gdk_pixbuf_new_from_resource(path, ffi::null_mut())
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}
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// Entry point.
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fn main()
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{
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unsafe {
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// get jacked, punk. opaque data structures are for nerds.
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const RESOURCE_DATA: &[u8] =
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include_bytes!(concat!(env!("OUT_DIR"), "/resources"));
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// first we create the static resource header, which is really simple
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let mut resource = GStaticResource{data: RESOURCE_DATA.as_ptr(),
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data_len: RESOURCE_DATA.len(),
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resource: ffi::null_mut(),
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next: ffi::null_mut(),
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padding: ffi::null_mut()};
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// init it, now we can use it throughout the entire app without copying!
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g_static_resource_init(&mut resource);
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{
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// create and run the app
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let app = Refc::new(gtk_application_new(APP_ID, 0));
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connect(*app, E_ACTIVATE, app_activate as _, ffi::null_void());
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g_application_run(*app as _, 0, ffi::null_mut());
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}
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// deinit the "static" data, and everything will be done
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g_static_resource_fini(&mut resource);
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}
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}
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// EOF
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