WDL/wingui/wndsize.h

   1 /*
   2     WDL - wndsize.h
   3     Copyright (C) 2004 and later Cockos Incorporated
   4
   5     This software is provided 'as-is', without any express or implied
   6     warranty.  In no event will the authors be held liable for any damages
   7     arising from the use of this software.
   8
   9     Permission is granted to anyone to use this software for any purpose,
  10     including commercial applications, and to alter it and redistribute it
  11     freely, subject to the following restrictions:
  12
  13     1. The origin of this software must not be misrepresented; you must not
  14        claim that you wrote the original software. If you use this software
  15        in a product, an acknowledgment in the product documentation would be
  16        appreciated but is not required.
  17     2. Altered source versions must be plainly marked as such, and must not be
  18        misrepresented as being the original software.
  19     3. This notice may not be removed or altered from any source distribution.
  20
  21 */
  22
  23 /*
  24
  25   This file provides the interface for a simple class that allows one to easily
  26   make resizeable dialogs and have controls that move according to ratios of the
  27   new size.
  28
  29   Usually, one does a
  30
  31   static WDL_WndSizer resize;
  32
  33   in their DlgProc, and in WM_INITDIALOG:
  34
  35         resize.init(hwndDlg);
  36
  37         // add a list of items
  38         resize.init_item(IDC_MASTERVOL,  // dialog id
  39                               0.0,  // left position, 0=left anchor, 1=right anchor, etc
  40                               0.0, // top position, 0=anchored to its initial top position, 1=anchored to distance from bottom, etc
  41                               0.7f,  // right position
  42                               0.0);  // bottom position
  43         ...
  44
  45
  46   then, in WM_SIZE,
  47       if (wParam != SIZE_MINIMIZED)
  48       {
  49         resize.onResize(); // don't actually resize, just compute the rects
  50       }
  51
  52
  53   is about all that's needed.
  54
  55
  56 */
  57
  58 #ifndef _WNDSIZE_H_
  59 #define _WNDSIZE_H_
  60
  61
  62 #include "../heapbuf.h"
  63
  64 class WDL_VWnd;
  65
  66 struct WDL_WndSizer__rec
  67 {
  68   HWND hwnd;
  69   RECT orig;
  70   RECT real_orig;
  71   RECT last;
  72   float scales[4];
  73   WDL_VWnd *vwnd;
  74 };
  75
  76 class WDL_WndSizer
  77 {
  78 public:
  79   WDL_WndSizer()
  80   {
  81     m_hwnd=NULL;
  82     memset(&m_min_size,0,sizeof(m_min_size));
  83     memset(&m_orig_size,0,sizeof(m_orig_size));
  84     memset(&m_margins,0,sizeof(m_margins));
  85   }
  86   ~WDL_WndSizer() { }
  87
  88   void init(HWND hwndDlg, RECT *initr=NULL);
  89
  90   // 1.0 means it moves completely with the point, 0.0 = not at all
  91   void init_item(int dlg_id, float left_scale=0.0, float top_scale=0.0, float right_scale=1.0, float bottom_scale=1.0, RECT *initr=NULL);
  92   void init_itemvirt(WDL_VWnd *vwnd, float left_scale=0.0, float top_scale=0.0, float right_scale=1.0, float bottom_scale=1.0);
  93   void init_item(int dlg_id, float *scales, RECT *initr=NULL);
  94   void init_itemvirt(WDL_VWnd *vwnd, float *scales);
  95   void init_itemhwnd(HWND h, float left_scale=0.0, float top_scale=0.0, float right_scale=1.0, float bottom_scale=1.0, RECT *srcr=NULL);
  96   void remove_item(int dlg_id);
  97   void remove_itemvirt(WDL_VWnd *vwnd);
  98   void remove_itemhwnd(HWND h);
  99
 100   WDL_WndSizer__rec *get_item(int dlg_id) const;
 101   WDL_WndSizer__rec *get_itembyindex(int idx) const;
 102   WDL_WndSizer__rec *get_itembywnd(HWND h) const;
 103   WDL_WndSizer__rec *get_itembyvirt(WDL_VWnd *vwnd) const;
 104
 105   RECT get_orig_rect() const { RECT r={0,0,m_orig_size.x,m_orig_size.y}; return r; }
 106   void set_orig_rect(const RECT *r, const POINT *minSize=NULL)
 107   {
 108     if (r) { m_orig_size.x = r->right; m_orig_size.y = r->bottom; }
 109     if (minSize) m_min_size = *minSize;
 110     else m_min_size.x=m_min_size.y=0;
 111   }
 112   POINT get_min_size(bool applyMargins=false) const;
 113
 114   void onResize(HWND only=0, int notouch=0, int xtranslate=0, int ytranslate=0);
 115
 116
 117   void set_margins(int left, int top, int right, int bottom) { m_margins.left=left; m_margins.top=top; m_margins.right=right; m_margins.bottom=bottom; }
 118   void get_margins(int *left, int *top, int *right, int *bottom) const
 119   {
 120     if (left) *left=m_margins.left;
 121     if (top) *top=m_margins.top;
 122     if (right) *right=m_margins.right;
 123     if (bottom) *bottom=m_margins.bottom;
 124   }
 125
 126   void transformRect(RECT *r, const float *scales, const RECT *wndSize) const;
 127
 128 private:
 129 #ifdef _WIN32
 130   static BOOL CALLBACK enum_RegionRemove(HWND hwnd,LPARAM lParam);
 131   HRGN m_enum_rgn;
 132 #endif
 133   HWND m_hwnd;
 134   POINT m_orig_size,m_min_size;
 135   RECT m_margins;
 136
 137   WDL_TypedBuf<WDL_WndSizer__rec> m_list;
 138
 139 };
 140
 141 #endif//_WNDSIZE_H_