From e86c7a3dd67f14d738b058c4aa3698e9e74958c9 Mon Sep 17 00:00:00 2001
From: emersion <contact@emersion.fr>
Date: Sat, 23 Feb 2019 12:15:37 +0100
Subject: rootston: move part of desktop.c to view.c, use an interface for
 views

---
 rootston/desktop.c | 652 -----------------------------------------------------
 1 file changed, 652 deletions(-)

(limited to 'rootston/desktop.c')

diff --git a/rootston/desktop.c b/rootston/desktop.c
index 63ff1382..e33e6058 100644
--- a/rootston/desktop.c
+++ b/rootston/desktop.c
@@ -36,658 +36,6 @@
 #include "rootston/xcursor.h"
 #include "wlr-layer-shell-unstable-v1-protocol.h"
 
-struct roots_view *view_create(struct roots_desktop *desktop) {
-	struct roots_view *view = calloc(1, sizeof(struct roots_view));
-	if (!view) {
-		return NULL;
-	}
-	view->desktop = desktop;
-	view->alpha = 1.0f;
-	wl_signal_init(&view->events.unmap);
-	wl_signal_init(&view->events.destroy);
-	wl_list_init(&view->children);
-	return view;
-}
-
-void view_get_box(const struct roots_view *view, struct wlr_box *box) {
-	box->x = view->box.x;
-	box->y = view->box.y;
-	box->width = view->box.width;
-	box->height = view->box.height;
-}
-
-void view_get_deco_box(const struct roots_view *view, struct wlr_box *box) {
-	view_get_box(view, box);
-	if (!view->decorated) {
-		return;
-	}
-
-	box->x -= view->border_width;
-	box->y -= (view->border_width + view->titlebar_height);
-	box->width += view->border_width * 2;
-	box->height += (view->border_width * 2 + view->titlebar_height);
-}
-
-enum roots_deco_part view_get_deco_part(struct roots_view *view, double sx,
-		double sy) {
-	if (!view->decorated) {
-		return ROOTS_DECO_PART_NONE;
-	}
-
-	int sw = view->wlr_surface->current.width;
-	int sh = view->wlr_surface->current.height;
-	int bw = view->border_width;
-	int titlebar_h = view->titlebar_height;
-
-	if (sx > 0 && sx < sw && sy < 0 && sy > -view->titlebar_height) {
-		return ROOTS_DECO_PART_TITLEBAR;
-	}
-
-	enum roots_deco_part parts = 0;
-	if (sy >= -(titlebar_h + bw) &&
-			sy <= sh + bw) {
-		if (sx < 0 && sx > -bw) {
-			parts |= ROOTS_DECO_PART_LEFT_BORDER;
-		} else if (sx > sw && sx < sw + bw) {
-			parts |= ROOTS_DECO_PART_RIGHT_BORDER;
-		}
-	}
-
-	if (sx >= -bw && sx <= sw + bw) {
-		if (sy > sh && sy <= sh + bw) {
-			parts |= ROOTS_DECO_PART_BOTTOM_BORDER;
-		} else if (sy >= -(titlebar_h + bw) && sy < 0) {
-			parts |= ROOTS_DECO_PART_TOP_BORDER;
-		}
-	}
-
-	// TODO corners
-
-	return parts;
-}
-
-static void view_update_output(const struct roots_view *view,
-		const struct wlr_box *before) {
-	struct roots_desktop *desktop = view->desktop;
-
-	if (view->wlr_surface == NULL) {
-		return;
-	}
-
-	struct wlr_box box;
-	view_get_box(view, &box);
-
-	struct roots_output *output;
-	wl_list_for_each(output, &desktop->outputs, link) {
-		bool intersected = before != NULL && wlr_output_layout_intersects(
-			desktop->layout, output->wlr_output, before);
-		bool intersects = wlr_output_layout_intersects(desktop->layout,
-			output->wlr_output, &box);
-		if (intersected && !intersects) {
-			wlr_surface_send_leave(view->wlr_surface, output->wlr_output);
-			if (view->toplevel_handle) {
-				wlr_foreign_toplevel_handle_v1_output_leave(
-					view->toplevel_handle, output->wlr_output);
-			}
-		}
-		if (!intersected && intersects) {
-			wlr_surface_send_enter(view->wlr_surface, output->wlr_output);
-			if (view->toplevel_handle) {
-				wlr_foreign_toplevel_handle_v1_output_enter(
-					view->toplevel_handle, output->wlr_output);
-			}
-		}
-	}
-}
-
-void view_move(struct roots_view *view, double x, double y) {
-	if (view->box.x == x && view->box.y == y) {
-		return;
-	}
-
-	struct wlr_box before;
-	view_get_box(view, &before);
-	if (view->move) {
-		view->move(view, x, y);
-	} else {
-		view_update_position(view, x, y);
-	}
-	view_update_output(view, &before);
-}
-
-void view_activate(struct roots_view *view, bool activate) {
-	if (view->activate) {
-		view->activate(view, activate);
-	}
-
-	if (view->toplevel_handle) {
-		wlr_foreign_toplevel_handle_v1_set_activated(view->toplevel_handle,
-			activate);
-	}
-}
-
-void view_resize(struct roots_view *view, uint32_t width, uint32_t height) {
-	struct wlr_box before;
-	view_get_box(view, &before);
-	if (view->resize) {
-		view->resize(view, width, height);
-	}
-	view_update_output(view, &before);
-}
-
-void view_move_resize(struct roots_view *view, double x, double y,
-		uint32_t width, uint32_t height) {
-	bool update_x = x != view->box.x;
-	bool update_y = y != view->box.y;
-	if (!update_x && !update_y) {
-		view_resize(view, width, height);
-		return;
-	}
-
-	if (view->move_resize) {
-		view->move_resize(view, x, y, width, height);
-		return;
-	}
-
-	view->pending_move_resize.update_x = update_x;
-	view->pending_move_resize.update_y = update_y;
-	view->pending_move_resize.x = x;
-	view->pending_move_resize.y = y;
-	view->pending_move_resize.width = width;
-	view->pending_move_resize.height = height;
-
-	view_resize(view, width, height);
-}
-
-static struct wlr_output *view_get_output(struct roots_view *view) {
-	struct wlr_box view_box;
-	view_get_box(view, &view_box);
-
-	double output_x, output_y;
-	wlr_output_layout_closest_point(view->desktop->layout, NULL,
-		view->box.x + (double)view_box.width/2,
-		view->box.y + (double)view_box.height/2,
-		&output_x, &output_y);
-	return wlr_output_layout_output_at(view->desktop->layout, output_x,
-		output_y);
-}
-
-void view_arrange_maximized(struct roots_view *view) {
-	if (view->fullscreen_output != NULL) {
-		return;
-	}
-
-	struct wlr_box view_box;
-	view_get_box(view, &view_box);
-
-	struct wlr_output *output = view_get_output(view);
-	struct roots_output *roots_output = output->data;
-	struct wlr_box *output_box =
-		wlr_output_layout_get_box(view->desktop->layout, output);
-	struct wlr_box usable_area;
-	memcpy(&usable_area, &roots_output->usable_area,
-			sizeof(struct wlr_box));
-	usable_area.x += output_box->x;
-	usable_area.y += output_box->y;
-
-	view_move_resize(view, usable_area.x, usable_area.y,
-			usable_area.width, usable_area.height);
-	view_rotate(view, 0);
-}
-
-void view_maximize(struct roots_view *view, bool maximized) {
-	if (view->maximized == maximized || view->fullscreen_output != NULL) {
-		return;
-	}
-
-	if (view->maximize) {
-		view->maximize(view, maximized);
-	}
-
-	if (view->toplevel_handle) {
-		wlr_foreign_toplevel_handle_v1_set_maximized(view->toplevel_handle,
-			maximized);
-	}
-
-	if (!view->maximized && maximized) {
-		view->maximized = true;
-		view->saved.x = view->box.x;
-		view->saved.y = view->box.y;
-		view->saved.rotation = view->rotation;
-		view->saved.width = view->box.width;
-		view->saved.height = view->box.height;
-
-		view_arrange_maximized(view);
-	}
-
-	if (view->maximized && !maximized) {
-		view->maximized = false;
-
-		view_move_resize(view, view->saved.x, view->saved.y, view->saved.width,
-			view->saved.height);
-		view_rotate(view, view->saved.rotation);
-	}
-}
-
-void view_set_fullscreen(struct roots_view *view, bool fullscreen,
-		struct wlr_output *output) {
-	bool was_fullscreen = view->fullscreen_output != NULL;
-	if (was_fullscreen == fullscreen) {
-		// TODO: support changing the output?
-		return;
-	}
-
-	// TODO: check if client is focused?
-
-	if (view->set_fullscreen) {
-		view->set_fullscreen(view, fullscreen);
-	}
-
-	if (!was_fullscreen && fullscreen) {
-		if (output == NULL) {
-			output = view_get_output(view);
-		}
-		struct roots_output *roots_output =
-			desktop_output_from_wlr_output(view->desktop, output);
-		if (roots_output == NULL) {
-			return;
-		}
-
-		struct wlr_box view_box;
-		view_get_box(view, &view_box);
-
-		view->saved.x = view->box.x;
-		view->saved.y = view->box.y;
-		view->saved.rotation = view->rotation;
-		view->saved.width = view_box.width;
-		view->saved.height = view_box.height;
-
-		struct wlr_box *output_box =
-			wlr_output_layout_get_box(view->desktop->layout, output);
-		view_move_resize(view, output_box->x, output_box->y, output_box->width,
-			output_box->height);
-		view_rotate(view, 0);
-
-		roots_output->fullscreen_view = view;
-		view->fullscreen_output = roots_output;
-		output_damage_whole(roots_output);
-	}
-
-	if (was_fullscreen && !fullscreen) {
-		view_move_resize(view, view->saved.x, view->saved.y, view->saved.width,
-			view->saved.height);
-		view_rotate(view, view->saved.rotation);
-
-		output_damage_whole(view->fullscreen_output);
-		view->fullscreen_output->fullscreen_view = NULL;
-		view->fullscreen_output = NULL;
-	}
-}
-
-void view_rotate(struct roots_view *view, float rotation) {
-	if (view->rotation == rotation) {
-		return;
-	}
-
-	view_damage_whole(view);
-	view->rotation = rotation;
-	view_damage_whole(view);
-}
-
-void view_cycle_alpha(struct roots_view *view) {
-	view->alpha -= 0.05;
-	/* Don't go completely transparent */
-	if (view->alpha < 0.1) {
-		view->alpha = 1.0;
-	}
-	view_damage_whole(view);
-}
-
-void view_close(struct roots_view *view) {
-	if (view->close) {
-		view->close(view);
-	}
-}
-
-bool view_center(struct roots_view *view) {
-	struct wlr_box box;
-	view_get_box(view, &box);
-
-	struct roots_desktop *desktop = view->desktop;
-	struct roots_input *input = desktop->server->input;
-	struct roots_seat *seat = input_last_active_seat(input);
-	if (!seat) {
-		return false;
-	}
-
-	struct wlr_output *output =
-		wlr_output_layout_output_at(desktop->layout,
-				seat->cursor->cursor->x,
-				seat->cursor->cursor->y);
-	if (!output) {
-		// empty layout
-		return false;
-	}
-
-	const struct wlr_output_layout_output *l_output =
-		wlr_output_layout_get(desktop->layout, output);
-
-	int width, height;
-	wlr_output_effective_resolution(output, &width, &height);
-
-	double view_x = (double)(width - box.width) / 2 + l_output->x;
-	double view_y = (double)(height - box.height) / 2 + l_output->y;
-	view_move(view, view_x, view_y);
-
-	return true;
-}
-
-void view_child_finish(struct roots_view_child *child) {
-	if (child == NULL) {
-		return;
-	}
-	view_damage_whole(child->view);
-	wl_list_remove(&child->link);
-	wl_list_remove(&child->commit.link);
-	wl_list_remove(&child->new_subsurface.link);
-}
-
-static void view_child_handle_commit(struct wl_listener *listener,
-		void *data) {
-	struct roots_view_child *child = wl_container_of(listener, child, commit);
-	view_apply_damage(child->view);
-}
-
-static void view_child_handle_new_subsurface(struct wl_listener *listener,
-		void *data) {
-	struct roots_view_child *child =
-		wl_container_of(listener, child, new_subsurface);
-	struct wlr_subsurface *wlr_subsurface = data;
-	subsurface_create(child->view, wlr_subsurface);
-}
-
-void view_child_init(struct roots_view_child *child, struct roots_view *view,
-		struct wlr_surface *wlr_surface) {
-	assert(child->destroy);
-	child->view = view;
-	child->wlr_surface = wlr_surface;
-	child->commit.notify = view_child_handle_commit;
-	wl_signal_add(&wlr_surface->events.commit, &child->commit);
-	child->new_subsurface.notify = view_child_handle_new_subsurface;
-	wl_signal_add(&wlr_surface->events.new_subsurface, &child->new_subsurface);
-	wl_list_insert(&view->children, &child->link);
-}
-
-static void subsurface_destroy(struct roots_view_child *child) {
-	assert(child->destroy == subsurface_destroy);
-	struct roots_subsurface *subsurface = (struct roots_subsurface *)child;
-	if (subsurface == NULL) {
-		return;
-	}
-	wl_list_remove(&subsurface->destroy.link);
-	wl_list_remove(&subsurface->map.link);
-	wl_list_remove(&subsurface->unmap.link);
-	view_child_finish(&subsurface->view_child);
-	free(subsurface);
-}
-
-static void subsurface_handle_destroy(struct wl_listener *listener,
-		void *data) {
-	struct roots_subsurface *subsurface =
-		wl_container_of(listener, subsurface, destroy);
-	subsurface_destroy(&subsurface->view_child);
-}
-
-static void subsurface_handle_map(struct wl_listener *listener,
-		void *data) {
-	struct roots_subsurface *subsurface =
-		wl_container_of(listener, subsurface, map);
-	struct roots_view *view = subsurface->view_child.view;
-	view_damage_whole(view);
-	input_update_cursor_focus(view->desktop->server->input);
-}
-
-static void subsurface_handle_unmap(struct wl_listener *listener,
-		void *data) {
-	struct roots_subsurface *subsurface =
-		wl_container_of(listener, subsurface, unmap);
-	struct roots_view *view = subsurface->view_child.view;
-	view_damage_whole(view);
-	input_update_cursor_focus(view->desktop->server->input);
-}
-
-struct roots_subsurface *subsurface_create(struct roots_view *view,
-		struct wlr_subsurface *wlr_subsurface) {
-	struct roots_subsurface *subsurface =
-		calloc(1, sizeof(struct roots_subsurface));
-	if (subsurface == NULL) {
-		return NULL;
-	}
-	subsurface->wlr_subsurface = wlr_subsurface;
-	subsurface->view_child.destroy = subsurface_destroy;
-	view_child_init(&subsurface->view_child, view, wlr_subsurface->surface);
-	subsurface->destroy.notify = subsurface_handle_destroy;
-	wl_signal_add(&wlr_subsurface->events.destroy, &subsurface->destroy);
-	subsurface->map.notify = subsurface_handle_map;
-	wl_signal_add(&wlr_subsurface->events.map, &subsurface->map);
-	subsurface->unmap.notify = subsurface_handle_unmap;
-	wl_signal_add(&wlr_subsurface->events.unmap, &subsurface->unmap);
-	return subsurface;
-}
-
-void view_destroy(struct roots_view *view) {
-	if (view == NULL) {
-		return;
-	}
-
-	wl_signal_emit(&view->events.destroy, view);
-
-	if (view->wlr_surface != NULL) {
-		view_unmap(view);
-	}
-
-	// Can happen if fullscreened while unmapped, and hasn't been mapped
-	if (view->fullscreen_output != NULL) {
-		view->fullscreen_output->fullscreen_view = NULL;
-	}
-
-	if (view->destroy) {
-		view->destroy(view);
-	}
-
-	free(view);
-}
-
-static void view_handle_new_subsurface(struct wl_listener *listener,
-		void *data) {
-	struct roots_view *view = wl_container_of(listener, view, new_subsurface);
-	struct wlr_subsurface *wlr_subsurface = data;
-	subsurface_create(view, wlr_subsurface);
-}
-
-void view_map(struct roots_view *view, struct wlr_surface *surface) {
-	assert(view->wlr_surface == NULL);
-
-	view->wlr_surface = surface;
-
-	struct wlr_subsurface *subsurface;
-	wl_list_for_each(subsurface, &view->wlr_surface->subsurfaces,
-			parent_link) {
-		subsurface_create(view, subsurface);
-	}
-
-	view->new_subsurface.notify = view_handle_new_subsurface;
-	wl_signal_add(&view->wlr_surface->events.new_subsurface,
-		&view->new_subsurface);
-
-	wl_list_insert(&view->desktop->views, &view->link);
-	view_damage_whole(view);
-	input_update_cursor_focus(view->desktop->server->input);
-}
-
-void view_unmap(struct roots_view *view) {
-	assert(view->wlr_surface != NULL);
-
-	wl_signal_emit(&view->events.unmap, view);
-
-	view_damage_whole(view);
-	wl_list_remove(&view->link);
-
-	wl_list_remove(&view->new_subsurface.link);
-
-	struct roots_view_child *child, *tmp;
-	wl_list_for_each_safe(child, tmp, &view->children, link) {
-		child->destroy(child);
-	}
-
-	if (view->fullscreen_output != NULL) {
-		output_damage_whole(view->fullscreen_output);
-		view->fullscreen_output->fullscreen_view = NULL;
-		view->fullscreen_output = NULL;
-	}
-
-	view->wlr_surface = NULL;
-	view->box.width = view->box.height = 0;
-
-	if (view->toplevel_handle) {
-		wlr_foreign_toplevel_handle_v1_destroy(view->toplevel_handle);
-		view->toplevel_handle = NULL;
-	}
-}
-
-void view_initial_focus(struct roots_view *view) {
-	struct roots_input *input = view->desktop->server->input;
-	// TODO what seat gets focus? the one with the last input event?
-	struct roots_seat *seat;
-	wl_list_for_each(seat, &input->seats, link) {
-		roots_seat_set_focus(seat, view);
-	}
-}
-
-void view_setup(struct roots_view *view) {
-	view_initial_focus(view);
-
-	if (view->fullscreen_output == NULL && !view->maximized) {
-		view_center(view);
-	}
-
-	view_create_foreign_toplevel_handle(view);
-	view_update_output(view, NULL);
-}
-
-void view_apply_damage(struct roots_view *view) {
-	struct roots_output *output;
-	wl_list_for_each(output, &view->desktop->outputs, link) {
-		output_damage_from_view(output, view);
-	}
-}
-
-void view_damage_whole(struct roots_view *view) {
-	struct roots_output *output;
-	wl_list_for_each(output, &view->desktop->outputs, link) {
-		output_damage_whole_view(output, view);
-	}
-}
-
-void view_update_position(struct roots_view *view, int x, int y) {
-	if (view->box.x == x && view->box.y == y) {
-		return;
-	}
-
-	view_damage_whole(view);
-	view->box.x = x;
-	view->box.y = y;
-	view_damage_whole(view);
-}
-
-void view_update_size(struct roots_view *view, int width, int height) {
-	if (view->box.width == width && view->box.height == height) {
-		return;
-	}
-
-	view_damage_whole(view);
-	view->box.width = width;
-	view->box.height = height;
-	view_damage_whole(view);
-}
-
-void view_update_decorated(struct roots_view *view, bool decorated) {
-	if (view->decorated == decorated) {
-		return;
-	}
-
-	view_damage_whole(view);
-	view->decorated = decorated;
-	if (decorated) {
-		view->border_width = 4;
-		view->titlebar_height = 12;
-	} else {
-		view->border_width = 0;
-		view->titlebar_height = 0;
-	}
-	view_damage_whole(view);
-}
-
-void view_set_title(struct roots_view *view, const char *title) {
-	if (view->toplevel_handle) {
-		wlr_foreign_toplevel_handle_v1_set_title(view->toplevel_handle, title);
-	}
-}
-
-void view_set_app_id(struct roots_view *view, const char *app_id) {
-	if (view->toplevel_handle) {
-		wlr_foreign_toplevel_handle_v1_set_app_id(view->toplevel_handle, app_id);
-	}
-}
-
-static void handle_toplevel_handle_request_maximize(struct wl_listener *listener,
-		void *data) {
-	struct roots_view *view = wl_container_of(listener, view,
-			toplevel_handle_request_maximize);
-	struct wlr_foreign_toplevel_handle_v1_maximized_event *event = data;
-	view_maximize(view, event->maximized);
-}
-
-static void handle_toplevel_handle_request_activate(struct wl_listener *listener,
-		void *data) {
-	struct roots_view *view =
-		wl_container_of(listener, view, toplevel_handle_request_activate);
-	struct wlr_foreign_toplevel_handle_v1_activated_event *event = data;
-
-	struct roots_seat *seat;
-	wl_list_for_each(seat, &view->desktop->server->input->seats, link) {
-		if (event->seat == seat->seat) {
-			roots_seat_set_focus(seat, view);
-		}
-	}
-}
-
-static void handle_toplevel_handle_request_close(struct wl_listener *listener,
-		void *data) {
-	struct roots_view *view =
-		wl_container_of(listener, view, toplevel_handle_request_close);
-	view_close(view);
-}
-
-void view_create_foreign_toplevel_handle(struct roots_view *view) {
-	view->toplevel_handle =
-		wlr_foreign_toplevel_handle_v1_create(
-			view->desktop->foreign_toplevel_manager_v1);
-
-	view->toplevel_handle_request_maximize.notify =
-		handle_toplevel_handle_request_maximize;
-	wl_signal_add(&view->toplevel_handle->events.request_maximize,
-			&view->toplevel_handle_request_maximize);
-	view->toplevel_handle_request_activate.notify =
-		handle_toplevel_handle_request_activate;
-	wl_signal_add(&view->toplevel_handle->events.request_activate,
-			&view->toplevel_handle_request_activate);
-	view->toplevel_handle_request_close.notify =
-		handle_toplevel_handle_request_close;
-	wl_signal_add(&view->toplevel_handle->events.request_close,
-			&view->toplevel_handle_request_close);
-}
-
 static bool view_at(struct roots_view *view, double lx, double ly,
 		struct wlr_surface **surface, double *sx, double *sy) {
 	if (view->type == ROOTS_WL_SHELL_VIEW &&
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