From 91f6ceff2e7ef574c30101707f1c8194fc620723 Mon Sep 17 00:00:00 2001
From: David Härdeman <david@hardeman.nu>
Date: Fri, 17 Jul 2015 12:11:55 +0200
Subject: Implement remote layout resizing

Still need to implement the server-side functionality...
---
 Makefile             |  2 +-
 rcm-client-receive.c | 84 ++++++++++++++++++++++++++++++++++++++++++++++++++--
 shared.h             |  8 +++++
 3 files changed, 90 insertions(+), 4 deletions(-)
 create mode 100644 shared.h

diff --git a/Makefile b/Makefile
index 1a8192f..e0783f4 100644
--- a/Makefile
+++ b/Makefile
@@ -12,7 +12,7 @@ EXTRA_CFLAGS	=
 GENERIC_LDFLAGS	=
 EXTRA_LDFLAGS	=
 
-COMMON_HEADERS	= linux-input-keycodes.h linux-input-enum.h
+COMMON_HEADERS	= linux-input-keycodes.h linux-input-enum.h shared.h
 
 RCM_PACKAGES	= libudev libsystemd
 RCM_CFLAGS	= ${GENERIC_CFLAGS} ${EXTRA_CFLAGS} $(shell pkg-config --cflags ${RCM_PACKAGES})
diff --git a/rcm-client-receive.c b/rcm-client-receive.c
index 47a45ab..60e84f9 100644
--- a/rcm-client-receive.c
+++ b/rcm-client-receive.c
@@ -6,6 +6,7 @@
 #include <inttypes.h>
 #include <gtk/gtk.h>
 
+#include "shared.h"
 #include "generated.h"
 #include "rcm-client-main.h"
 #include "rcm-client-receive.h"
@@ -302,7 +303,73 @@ remove_header_buttons(void)
 static void toggle_edit_keymap(GtkButton *button, gpointer user_data);
 
 static void
-resize_keymap(GtkButton *button, gpointer user_data)
+resize_layout(struct remote *remote, guint16 new_width, guint16 new_height)
+{
+	guint16 old_width = remote->width;
+	guint16 old_height = remote->height;
+	unsigned x, y;
+	GList *new_buttons = NULL;
+
+	printf("Resizing...\n");
+
+	if (new_width < old_width || new_height < old_height) {
+		GList *b = remote->buttons;
+
+		for (y = 0; y < old_height; y++) {
+			for (x = 0; x < old_width; x++) {
+				GList *delete = b;
+				struct rcbutton *rcb = delete->data;
+
+				b = b->next;
+				if (x < new_width && y < new_height)
+					continue;
+
+				printf("\tDeleting old button at %ux%u\n", x, y);
+				remote->buttons = g_list_remove_link(remote->buttons, delete);
+				gtk_widget_destroy(rcb->button);
+				g_free(rcb->name);
+				g_free(rcb);
+				g_list_free(delete);
+			}
+		}
+	}
+
+	for (y = 0; y < new_height; y++) {
+		for (x = 0; x < new_width; x++) {
+
+			if (x < old_width && y < old_height) {
+				GList *b;
+
+				b = remote->buttons;
+				remote->buttons = g_list_remove_link(remote->buttons, b);
+				new_buttons = g_list_concat(new_buttons, b);
+				printf("\tCopied button at %ux%u\n", x, y);
+			} else {
+				struct rcbutton *rcb;
+				rcb = new_blank_add(GTK_GRID(remote->grid), x, y);
+				new_buttons = g_list_append(new_buttons, rcb);
+				gtk_revealer_set_reveal_child(GTK_REVEALER(rcb->button), true);
+				printf("\tNew button at %ux%u\n", x, y);
+			}
+		}
+	}
+
+	g_assert(remote->buttons == NULL);
+
+	remote->buttons = new_buttons;
+	remote->width = new_width;
+	remote->height = new_height;
+
+	g_object_ref(remote->edit_button);
+	gtk_container_remove(GTK_CONTAINER(remote->grid), remote->edit_button);
+	gtk_grid_attach(GTK_GRID(remote->grid), remote->edit_button, 0, -1, remote->width, 1);
+	g_object_unref(remote->edit_button);
+
+	gtk_widget_show_all(remote->grid);
+}
+
+static void
+resize_layout_dialog(GtkButton *button, gpointer user_data)
 {
 	struct remote *remote = user_data;
 	GtkWindow *parent = GTK_WINDOW(gtk_widget_get_toplevel(GTK_WIDGET(button)));
@@ -355,7 +422,18 @@ resize_keymap(GtkButton *button, gpointer user_data)
 
 	width = gtk_spin_button_get_value_as_int(GTK_SPIN_BUTTON(width_input));
 	height = gtk_spin_button_get_value_as_int(GTK_SPIN_BUTTON(height_input));
-	printf("Asked to resize keymap '%s' to to %ix%i\n", remote->name, width, height);
+
+	if (width < 1 || width > REMOTE_LAYOUT_MAX_WIDTH) {
+		printf("Invalid width: %i\n", width);
+		goto out;
+	}
+
+	if (height < 1 || height > REMOTE_LAYOUT_MAX_HEIGHT) {
+		printf("Invalid height: %i\n", height);
+		goto out;
+	}
+
+	resize_layout(remote, width, height);
 
 out:
 	gtk_widget_destroy(dialog);
@@ -379,7 +457,7 @@ set_edit_keymap(bool editing)
 
 		if (editing) {
 			remote->edit_button = gtk_button_new_with_label("Resize");
-			g_signal_connect(remote->edit_button, "clicked", G_CALLBACK(resize_keymap), remote);
+			g_signal_connect(remote->edit_button, "clicked", G_CALLBACK(resize_layout_dialog), remote);
 			gtk_grid_attach(GTK_GRID(remote->grid), remote->edit_button, 0, -1, remote->width, 1);
 			gtk_widget_show_all(remote->edit_button);
 		} else {
diff --git a/shared.h b/shared.h
new file mode 100644
index 0000000..28eed39
--- /dev/null
+++ b/shared.h
@@ -0,0 +1,8 @@
+#ifndef foosharedfooh
+#define foosharedhfoo
+
+#define REMOTE_LAYOUT_MAX_WIDTH  1000
+#define REMOTE_LAYOUT_MAX_HEIGHT 1000
+
+#endif
+
-- 
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