programs/oleview/pane.c

   1 /*
   2  * OleView (pane.c)
   3  *
   4  * Copyright 2006 Piotr Caban
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "main.h"
  22
  23 static int GetSplitPos(HWND hWnd)
  24 {
  25     PANE *pane = (PANE *)GetMenu(hWnd);
  26
  27     if(pane->pos < pane->size/2+1) pane->pos = pane->size/2+1;
  28
  29     return (pane->width>pane->pos+pane->size/2+1 ?
  30             pane->pos : pane->width-pane->size/2-1);
  31 }
  32
  33 static void DrawSplitMoving(HWND hWnd, int x)
  34 {
  35     RECT rt;
  36     HDC hdc = GetDC(hWnd);
  37     PANE *pane = (PANE *)GetMenu(hWnd);
  38
  39     GetClientRect(hWnd, &rt);
  40
  41     if(pane->last!=-1)
  42     {
  43         rt.left = pane->last-pane->size/2;
  44         rt.right = pane->last+pane->size/2;
  45         InvertRect(hdc, &rt);
  46     }
  47
  48     pane->pos = x>MAX_WINDOW_WIDTH ? -1 : x;
  49     x = GetSplitPos(hWnd);
  50
  51     pane->pos = x;
  52     rt.left = x-pane->size/2;
  53     rt.right = x+pane->size/2;
  54     pane->last = x;
  55     InvertRect(hdc, &rt);
  56
  57     ReleaseDC(hWnd, hdc);
  58 }
  59
  60 LRESULT CALLBACK PaneProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
  61 {
  62     POINT pt;
  63     PANE *pane = (PANE*)GetMenu(hWnd);
  64
  65     switch(uMsg)
  66     {
  67         case WM_SETCURSOR:
  68             GetCursorPos(&pt);
  69             ScreenToClient(hWnd, &pt);
  70
  71             if(pt.x >= GetSplitPos(hWnd)-pane->size/2 &&
  72                     pt.x <= GetSplitPos(hWnd)+pane->size/2)
  73                 SetCursor(LoadCursor(0, IDC_SIZEWE));
  74             break;
  75         case WM_LBUTTONDOWN:
  76             if((short)LOWORD(lParam) >= GetSplitPos(hWnd)-pane->size/2 &&
  77                (short)LOWORD(lParam) <= GetSplitPos(hWnd)+pane->size/2)
  78             {
  79                 pane->last = -1;
  80                 DrawSplitMoving(hWnd, (short)LOWORD(lParam));
  81                 SetCapture(hWnd);
  82             }
  83             break;
  84         case WM_LBUTTONUP:
  85             if(GetCapture() == hWnd)
  86             {
  87                 pane->last = -1;
  88                 DrawSplitMoving(hWnd, (short)LOWORD(lParam));
  89
  90                 MoveWindow(pane->left, 0, 0,
  91                         GetSplitPos(hWnd)-pane->size/2, pane->height, TRUE);
  92                 MoveWindow(pane->right, GetSplitPos(hWnd)+pane->size/2, 0,
  93                         pane->width-GetSplitPos(hWnd)-pane->size/2, pane->height, TRUE);
  94
  95                 ReleaseCapture();
  96             }
  97             break;
  98         case WM_MOUSEMOVE:
  99             if(GetCapture() == hWnd)
 100                 DrawSplitMoving(hWnd, (short)LOWORD(lParam));
 101             break;
 102         case WM_NOTIFY:
 103             if((int)wParam != TYPELIB_TREE) break;
 104             switch(((LPNMHDR)lParam)->code)
 105             {
 106                 case TVN_SELCHANGED:
 107                     UpdateData(((NMTREEVIEW *)lParam)->itemNew.hItem);
 108                     break;
 109             }
 110             break;
 111         case WM_SIZE:
 112             if(wParam == SIZE_MINIMIZED) break;
 113             pane->width = LOWORD(lParam);
 114             pane->height = HIWORD(lParam);
 115
 116             MoveWindow(pane->left, 0, 0,
 117                     GetSplitPos(hWnd)-pane->size/2, HIWORD(lParam), TRUE);
 118             MoveWindow(pane->right, GetSplitPos(hWnd)+pane->size/2, 0,
 119                     LOWORD(lParam)-GetSplitPos(hWnd)-pane->size/2,
 120                     HIWORD(lParam), TRUE);
 121             break;
 122         case WM_DESTROY:
 123             HeapFree(GetProcessHeap(), 0, pane);
 124             break;
 125         default:
 126             return DefWindowProc(hWnd, uMsg, wParam, lParam);
 127     }
 128     return 0;
 129 }
 130
 131 BOOL PaneRegisterClass(void)
 132 {
 133     WNDCLASS wcc;
 134     const WCHAR wszPaneClass[] = { 'P','A','N','E','\0' };
 135
 136     memset(&wcc, 0, sizeof(WNDCLASS));
 137     wcc.lpfnWndProc = PaneProc;
 138     wcc.hbrBackground = (HBRUSH)(COLOR_WINDOW);
 139     wcc.lpszClassName = wszPaneClass;
 140
 141     if(!RegisterClass(&wcc))
 142         return FALSE;
 143     return TRUE;
 144 }
 145
 146 BOOL CreatePanedWindow(HWND hWnd, HWND *hWndCreated, HINSTANCE hInst)
 147 {
 148     const WCHAR wszPaneClass[] = { 'P','A','N','E','\0' };
 149     PANE *pane;
 150
 151     pane = HeapAlloc(GetProcessHeap(), 0, sizeof(PANE));
 152     *hWndCreated = CreateWindow(wszPaneClass, NULL, WS_CHILD|WS_VISIBLE,
 153             CW_USEDEFAULT, CW_USEDEFAULT, 0, 0,    hWnd, (HMENU)pane, hInst, NULL);
 154     if(!hWndCreated)
 155     {
 156         HeapFree(GetProcessHeap(), 0, pane);
 157         return FALSE;
 158     }
 159
 160     pane->left = NULL;
 161     pane->right = NULL;
 162     pane->pos = 300;
 163     pane->size = 5;
 164
 165     return TRUE;
 166 }
 167
 168 void SetLeft(HWND hParent, HWND hWnd)
 169 {
 170     PANE *pane = (PANE *)GetMenu(hParent);
 171     pane->left = hWnd;
 172 }
 173
 174 void SetRight(HWND hParent, HWND hWnd)
 175 {
 176     PANE *pane = (PANE *)GetMenu(hParent);
 177     pane->right = hWnd;
 178 }