From 675d16c71a888d9e0fa96636ee473e5bca4a454a Mon Sep 17 00:00:00 2001
From: Dana Jansens <danakj@orodu.net>
Date: Sat, 20 Jul 2002 20:25:56 +0000
Subject: [PATCH] implement window resizing. using resizing incrememnts if the
 window has requested them!

---
 util/epist/actions.hh |  4 ++--
 util/epist/window.cc  | 50 +++++++++++++++++++++++++++++++++++--------
 util/epist/window.hh  |  4 +++-
 3 files changed, 46 insertions(+), 12 deletions(-)

diff --git a/util/epist/actions.hh b/util/epist/actions.hh
index bfd16abe..30ea0e68 100644
--- a/util/epist/actions.hh
+++ b/util/epist/actions.hh
@@ -46,8 +46,8 @@ public:
     moveWindowDown, //done
     moveWindowLeft, //done
     moveWindowRight, //done
-    resizeWindowWidth,
-    resizeWindowHeight,
+    resizeWindowWidth, //done
+    resizeWindowHeight, //done
 
     toggleMaximizeFull, //done
     toggleMaximizeVertical, //done
diff --git a/util/epist/window.cc b/util/epist/window.cc
index 7ee67426..628bceba 100644
--- a/util/epist/window.cc
+++ b/util/epist/window.cc
@@ -44,8 +44,8 @@ XWindow::XWindow(epist *epist, screen *screen, Window window)
   XSelectInput(_epist->getXDisplay(), _window,
                PropertyChangeMask | StructureNotifyMask);
 
+  updateHints();
   updateDimentions();
-  updateGravity();
   updateState();
   updateDesktop();
   updateTitle();
@@ -77,15 +77,27 @@ void XWindow::updateDimentions() {
 }
 
 
-void XWindow::updateGravity() {
+void XWindow::updateHints() {
   XSizeHints size;
   long ret;
 
-  if (XGetWMNormalHints(_epist->getXDisplay(), _window, &size, &ret) &&
-      (size.flags & PWinGravity))
-    _gravity = size.win_gravity;
-  else
-    _gravity = NorthWestGravity;
+  // defaults
+  _gravity = NorthWestGravity;
+  _inc_x = _inc_y = 1;
+  _base_x = _base_y = 0;
+  
+  if (XGetWMNormalHints(_epist->getXDisplay(), _window, &size, &ret)) {
+    if (size.flags & PWinGravity)
+      _gravity = size.win_gravity;
+    if (size.flags & PBaseSize) {
+      _base_x = size.base_width;
+      _base_y = size.base_height;
+    }
+    if (size.flags & PResizeInc) {
+      _inc_x = size.width_inc;
+      _inc_y = size.height_inc;
+    }
+  }
 }
 
 
@@ -158,7 +170,7 @@ void XWindow::processEvent(const XEvent &e) {
     break;
   case PropertyNotify:
     if (e.xproperty.atom == XA_WM_NORMAL_HINTS)
-      updateGravity();
+      updateHints();
     else if (e.xproperty.atom == _xatom->getAtom(XAtom::net_wm_state))
       updateState();
     else if (e.xproperty.atom == _xatom->getAtom(XAtom::net_wm_desktop))
@@ -307,7 +319,27 @@ void XWindow::move(int x, int y) const {
 
 
 void XWindow::resize(unsigned int width, unsigned int height) const {
-  XResizeWindow(_epist->getXDisplay(), _window, width, height);
+  // resize in increments if requested by the window
+
+  unsigned int wdest = width / _inc_x * _inc_x + _base_x;
+  unsigned int hdest = height / _inc_y * _inc_y + _base_y;
+
+  if (width > wdest) {
+    while (width > wdest)
+      wdest += _inc_x;
+  } else {
+    while (width < wdest)
+      wdest -= _inc_x;
+  }
+  if (height > hdest) {
+    while (height > hdest)
+      hdest += _inc_y;
+  } else {
+    while (height < hdest)
+      hdest -= _inc_y;
+  }
+  
+  XResizeWindow(_epist->getXDisplay(), _window, wdest, hdest);
 }
 
 
diff --git a/util/epist/window.hh b/util/epist/window.hh
index df925ad6..406efe09 100644
--- a/util/epist/window.hh
+++ b/util/epist/window.hh
@@ -57,6 +57,8 @@ private:
   std::string _app_name;
   std::string _app_class;
   Rect _rect;
+  int _inc_x, _inc_y; // resize increments
+  int _base_x, _base_y; // base size
   int _gravity;
 
   // states
@@ -68,7 +70,7 @@ private:
   bool _unmapped;
 
   void updateDimentions();
-  void updateGravity();
+  void updateHints();
   void updateState();
   void updateDesktop();
   void updateTitle();
-- 
2.39.2