From 8e65812566e9109f3d672ddfb4c4a30f042f917f Mon Sep 17 00:00:00 2001
From: Christian Heller <c.heller@plomlompom.de>
Date: Fri, 17 May 2013 02:57:00 +0200
Subject: [PATCH] Restructured window resizing. windows.c now only contains a
 general resize with width/height values, while growing/shrinking by 1 is
 handled inside roguelike.c

---
 roguelike.c | 24 ++++++++++++++++++++----
 windows.c   | 14 ++++----------
 windows.h   |  2 +-
 3 files changed, 25 insertions(+), 15 deletions(-)

diff --git a/roguelike.c b/roguelike.c
index bc21ab5..bc971d4 100644
--- a/roguelike.c
+++ b/roguelike.c
@@ -44,6 +44,7 @@ void draw_map (struct Win *);
 void draw_info (struct Win *);
 void draw_keys_window (struct Win *);
 void toggle_window (struct WinMeta *, struct Win *);
+void growshrink_active_window (struct WinMeta *, char);
 void init_keybindings(struct World *);
 struct Map init_map ();
 void map_scroll (struct Map *, char);
@@ -192,6 +193,21 @@ void toggle_window (struct WinMeta * win_meta, struct Win * win) {
   else
     append_window(win_meta, win); }
 
+void growshrink_active_window (struct WinMeta * win_meta, char change) {
+// Grow or shrink active window horizontally or vertically by one cell size.
+  if (0 != win_meta->active) {
+    int height = win_meta->active->height;
+    int width = win_meta->active->width;
+    if      (change == '-')
+      height--;
+    else if (change == '+')
+      height++;
+    else if (change == '_')
+      width--;
+    else if (change == '*')
+      width++;
+    resize_active_window (win_meta, height, width); } }
+
 void init_keybindings(struct World * world) {
 // Initialize keybindings from file "keybindings".
   FILE * file = fopen("keybindings", "r");
@@ -495,13 +511,13 @@ int main () {
     else if (key == get_action_key(world.keybindings, "shift backwards"))
       shift_window(&win_meta, 'b');
     else if (key == get_action_key(world.keybindings, "grow horizontally"))
-      resize_window(&win_meta, '*');
+      growshrink_active_window(&win_meta, '*');
     else if (key == get_action_key(world.keybindings, "shrink horizontally"))
-      resize_window(&win_meta, '_');
+      growshrink_active_window(&win_meta, '_');
     else if (key == get_action_key(world.keybindings, "grow vertically"))
-      resize_window(&win_meta, '+');
+      growshrink_active_window(&win_meta, '+');
     else if (key == get_action_key(world.keybindings, "shrink vertically"))
-      resize_window(&win_meta, '-');
+      growshrink_active_window(&win_meta, '-');
     else if (key == get_action_key(world.keybindings, "save keys"))
       save_keybindings(&world);
     else if (key == get_action_key(world.keybindings, "keys nav up"))
diff --git a/windows.c b/windows.c
index 659318d..ff0adb2 100644
--- a/windows.c
+++ b/windows.c
@@ -192,17 +192,11 @@ void draw_all_windows (struct WinMeta * win_meta) {
     free(all_corners); }
   doupdate(); }
 
-void resize_window (struct WinMeta * win_meta, char change) {
+void resize_active_window (struct WinMeta * win_meta, int height, int width) {
 // Grow or shrink currently active window. Correct its geometry and that of its followers.
-  if (0 != win_meta->active) {
-    if      (change == '-' && win_meta->active->height > 1)
-      win_meta->active->height--;
-    else if (change == '+' && win_meta->active->height < win_meta->height - 1)
-      win_meta->active->height++;
-    else if (change == '_' && win_meta->active->width > 1)
-      win_meta->active->width--;
-    else if (change == '*')
-      win_meta->active->width++;
+  if (0 != win_meta->active && width > 0 && height > 0 && height < win_meta->height) {
+    win_meta->active->height = height;
+    win_meta->active->width  = width;
     update_windows(win_meta, win_meta->chain_start); } }
 
 void cycle_active_window (struct WinMeta * win_meta, char dir) {
diff --git a/windows.h b/windows.h
index 23fbdc1..c802e05 100644
--- a/windows.h
+++ b/windows.h
@@ -40,6 +40,6 @@ void draw_windows (struct Win *);
 void draw_windows_borders (struct Win *, struct Win *, struct Corners *, int);
 void draw_window_borders (struct Win *, char);
 void draw_all_windows (struct WinMeta *);
-void resize_window (struct WinMeta *, char);
+void resize_active_window (struct WinMeta *, int, int);
 void cycle_active_window (struct WinMeta *, char);
 void shift_window (struct WinMeta *, char);
-- 
2.30.2