changes from Alessandro Scotti from 20051231

[xboard.git] / winboard / wlayout.c

diff --git a/winboard/wlayout.c b/winboard/wlayout.c
new file mode 100644 (file)
index 0000000..169c7ea
--- /dev/null
+++ b/winboard/wlayout.c
@@ -0,0 +1,156 @@
+/*
+ * Layout management
+ *
+ * Author: Alessandro Scotti
+ *
+ * ------------------------------------------------------------------------
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * ------------------------------------------------------------------------
+ */
+#include "config.h"
+
+#include <windows.h> /* required for all Windows applications */
+#include <stdio.h>
+#include <stdlib.h>
+#include <malloc.h>
+#include <commdlg.h>
+#include <dlgs.h>
+
+#include "common.h"
+#include "winboard.h"
+
+VOID RestoreWindowPlacement( HWND hWnd, WindowPlacement * wp )
+{
+    if( wp->x != CW_USEDEFAULT ||
+        wp->y != CW_USEDEFAULT ||
+        wp->width != CW_USEDEFAULT ||
+        wp->height != CW_USEDEFAULT )
+    {
+       WINDOWPLACEMENT stWP;
+
+        ZeroMemory( &stWP, sizeof(stWP) );
+
+       EnsureOnScreen( &wp->x, &wp->y);
+
+       stWP.length = sizeof(stWP);
+       stWP.flags = 0;
+       stWP.showCmd = SW_SHOW;
+       stWP.ptMaxPosition.x = 0;
+        stWP.ptMaxPosition.y = 0;
+       stWP.rcNormalPosition.left = wp->x;
+       stWP.rcNormalPosition.right = wp->x + wp->width;
+       stWP.rcNormalPosition.top = wp->y;
+       stWP.rcNormalPosition.bottom = wp->y + wp->height;
+
+       SetWindowPlacement(hWnd, &stWP);
+    }
+}
+
+VOID InitWindowPlacement( WindowPlacement * wp )
+{
+    wp->visible = TRUE;
+    wp->x = CW_USEDEFAULT;
+    wp->y = CW_USEDEFAULT;
+    wp->width = CW_USEDEFAULT;
+    wp->height = CW_USEDEFAULT;
+}
+
+static BOOL IsAttachDistance( int a, int b )
+{
+    BOOL result = FALSE;
+
+    if( a == b ) {
+        result = TRUE;
+    }
+
+    return result;
+}
+
+static BOOL IsDefaultPlacement( WindowPlacement * wp )
+{
+    BOOL result = FALSE;
+
+    if( wp->x == CW_USEDEFAULT || wp->y == CW_USEDEFAULT || wp->width == CW_USEDEFAULT || wp->height == CW_USEDEFAULT ) {
+        result = TRUE;
+    }
+
+    return result;
+}
+
+static BOOL GetActualPlacement( HWND hWnd, WindowPlacement * wp )
+{
+    BOOL result = FALSE;
+
+    if( hWnd != NULL ) {
+        WINDOWPLACEMENT stWP;
+
+        ZeroMemory( &stWP, sizeof(stWP) );
+
+        stWP.length = sizeof(stWP);
+
+        GetWindowPlacement( hWnd, &stWP );
+
+        wp->x = stWP.rcNormalPosition.left;
+        wp->y = stWP.rcNormalPosition.top;
+        wp->width = stWP.rcNormalPosition.right - stWP.rcNormalPosition.left;
+        wp->height = stWP.rcNormalPosition.bottom - stWP.rcNormalPosition.top;
+
+        result = TRUE;
+    }
+
+    return result;
+}
+
+static BOOL IsAttachedByWindowPlacement( LPRECT lprcMain, WindowPlacement * wp )
+{
+    BOOL result = FALSE;
+
+    if( ! IsDefaultPlacement(wp) ) {
+        if( IsAttachDistance( lprcMain->right, wp->x ) ||
+            IsAttachDistance( lprcMain->bottom, wp->y ) ||
+            IsAttachDistance( lprcMain->left, (wp->x + wp->width) ) ||
+            IsAttachDistance( lprcMain->top, (wp->y + wp->height) ) )
+        {
+            result = TRUE;
+        }
+    }
+
+    return result;
+}
+
+VOID ReattachAfterMove( LPRECT lprcOldPos, int new_x, int new_y, HWND hWndChild, WindowPlacement * pwpChild )
+{
+    if( ! IsDefaultPlacement( pwpChild ) ) {
+        GetActualPlacement( hWndChild, pwpChild );
+
+        if( IsAttachedByWindowPlacement( lprcOldPos, pwpChild ) ) {
+            /* Get position delta */
+            int delta_x = pwpChild->x - lprcOldPos->left;
+            int delta_y = pwpChild->y - lprcOldPos->top;
+
+            /* Adjust placement */
+            pwpChild->x = new_x + delta_x;
+            pwpChild->y = new_y + delta_y;
+
+            /* Move window */
+            if( hWndChild != NULL ) {
+                SetWindowPos( hWndChild, HWND_TOP,
+                    pwpChild->x, pwpChild->y,
+                    0, 0,
+                    SWP_NOZORDER | SWP_NOSIZE );
+            }
+        }
+    }
+}