ioncore/presize.c

   1 /*
   2  * ion/ioncore/presize.c
   3  *
   4  * Copyright (c) Tuomo Valkonen 1999-2007.
   5  *
   6  * Ion is free software; you can redistribute it and/or modify it under
   7  * the terms of the GNU Lesser General Public License as published by
   8  * the Free Software Foundation; either version 2.1 of the License, or
   9  * (at your option) any later version.
  10  */
  11
  12 #include "presize.h"
  13 #include "resize.h"
  14 #include "window.h"
  15 #include "pointer.h"
  16 #include "grab.h"
  17
  18
  19 /*{{{ Resize */
  20
  21
  22 static int p_dx1mul=0, p_dx2mul=0, p_dy1mul=0, p_dy2mul=0;
  23
  24
  25 #define MINCORNER 16
  26
  27
  28 void window_p_resize_prepare(WWindow *wwin, XButtonEvent *ev)
  29 {
  30     int ww=REGION_GEOM(wwin).w/2;
  31     int hh=REGION_GEOM(wwin).h/2;
  32     int xdiv, ydiv;
  33     int tmpx, tmpy, atmpx, atmpy;
  34
  35     p_dx1mul=0;
  36     p_dx2mul=0;
  37     p_dy1mul=0;
  38     p_dy2mul=0;
  39
  40     tmpx=ev->x-ww;
  41     tmpy=hh-ev->y;
  42     xdiv=ww/2;
  43     ydiv=hh/2;
  44     atmpx=abs(tmpx);
  45     atmpy=abs(tmpy);
  46
  47     if(xdiv<MINCORNER && xdiv>1){
  48         xdiv=ww-MINCORNER;
  49         if(xdiv<1)
  50             xdiv=1;
  51     }
  52
  53     if(ydiv<MINCORNER && ydiv>1){
  54         ydiv=hh-MINCORNER;
  55         if(ydiv<1)
  56             ydiv=1;
  57     }
  58
  59     if(xdiv==0){
  60         p_dx2mul=1;
  61     }else if(hh*atmpx/xdiv>=tmpy && -hh*atmpx/xdiv<=tmpy){
  62         p_dx1mul=(tmpx<0);
  63         p_dx2mul=(tmpx>=0);
  64     }
  65
  66     if(ydiv==0){
  67         p_dy2mul=1;
  68     }else if(ww*atmpy/ydiv>=tmpx && -ww*atmpy/ydiv<=tmpx){
  69         p_dy1mul=(tmpy>0);
  70         p_dy2mul=(tmpy<=0);
  71     }
  72 }
  73
  74
  75 static void p_moveres_end(WWindow *wwin, XButtonEvent *ev)
  76 {
  77     WMoveresMode *mode=moveres_mode((WRegion*)wwin);
  78     if(mode!=NULL)
  79         moveresmode_do_end(mode, TRUE);
  80 }
  81
  82
  83 static void p_moveres_cancel(WWindow *wwin)
  84 {
  85     WMoveresMode *mode=moveres_mode((WRegion*)wwin);
  86     if(mode!=NULL)
  87         moveresmode_do_end(mode, FALSE);
  88 }
  89
  90
  91 static void confine_to_parent(WWindow *wwin)
  92 {
  93     WRegion *par=REGION_PARENT_REG(wwin);
  94     if(par!=NULL)
  95         ioncore_grab_confine_to(region_xwindow(par));
  96 }
  97
  98
  99 static void p_resize_motion(WWindow *wwin, XMotionEvent *ev, int dx, int dy)
 100 {
 101     WMoveresMode *mode=moveres_mode((WRegion*)wwin);
 102     if(mode!=NULL){
 103         moveresmode_delta_resize(mode, p_dx1mul*dx, p_dx2mul*dx,
 104                                  p_dy1mul*dy, p_dy2mul*dy, NULL);
 105     }
 106 }
 107
 108
 109 static void p_resize_begin(WWindow *wwin, XMotionEvent *ev, int dx, int dy)
 110 {
 111     region_begin_resize((WRegion*)wwin, NULL, TRUE);
 112     p_resize_motion(wwin, ev, dx, dy);
 113 }
 114
 115
 116 /*EXTL_DOC
 117  * Start resizing \var{wwin} with the mouse or other pointing device.
 118  * This function should only be used by binding it to \emph{mpress} or
 119  * \emph{mdrag} action.
 120  */
 121 EXTL_EXPORT_MEMBER
 122 void window_p_resize(WWindow *wwin)
 123 {
 124     if(!ioncore_set_drag_handlers((WRegion*)wwin,
 125                                   (WMotionHandler*)p_resize_begin,
 126                                   (WMotionHandler*)p_resize_motion,
 127                                   (WButtonHandler*)p_moveres_end,
 128                                   NULL,
 129                                   (GrabKilledHandler*)p_moveres_cancel))
 130         return;
 131
 132     confine_to_parent(wwin);
 133 }
 134
 135
 136 /*}}}*/
 137
 138
 139 /*{{{ Move */
 140
 141
 142 static void p_move_motion(WWindow *wwin, XMotionEvent *ev, int dx, int dy)
 143 {
 144     WMoveresMode *mode=moveres_mode((WRegion*)wwin);
 145     if(mode!=NULL)
 146         moveresmode_delta_move(mode, dx, dy, NULL);
 147 }
 148
 149
 150 static void p_move_begin(WWindow *wwin, XMotionEvent *ev, int dx, int dy)
 151 {
 152     region_begin_move((WRegion*)wwin, NULL, TRUE);
 153     p_move_motion(wwin, ev, dx, dy);
 154 }
 155
 156
 157 /*EXTL_DOC
 158  * Start moving \var{wwin} with the mouse or other pointing device.
 159  * This function should only be used by binding it to \emph{mpress} or
 160  * \emph{mdrag} action.
 161  */
 162 EXTL_EXPORT_MEMBER
 163 void window_p_move(WWindow *wwin)
 164 {
 165     if(!ioncore_set_drag_handlers((WRegion*)wwin,
 166                                   (WMotionHandler*)p_move_begin,
 167                                   (WMotionHandler*)p_move_motion,
 168                                   (WButtonHandler*)p_moveres_end,
 169                                   NULL,
 170                                   (GrabKilledHandler*)p_moveres_cancel))
 171         return;
 172
 173     confine_to_parent(wwin);
 174 }
 175
 176
 177 /*}}}*/