ioncore/presize.c

   1 /*
   2  * ion/ioncore/presize.c
   3  *
   4  * Copyright (c) Tuomo Valkonen 1999-2009.
   5  *
   6  * See the included file LICENSE for details.
   7  */
   8
   9 #include "presize.h"
  10 #include "resize.h"
  11 #include "window.h"
  12 #include "pointer.h"
  13 #include "grab.h"
  14
  15
  16 /*{{{ Resize */
  17
  18
  19 static int p_dx1mul=0, p_dx2mul=0, p_dy1mul=0, p_dy2mul=0;
  20
  21
  22 #define MINCORNER 16
  23
  24
  25 void window_p_resize_prepare(WWindow *wwin, XButtonEvent *ev)
  26 {
  27     int ww=REGION_GEOM(wwin).w/2;
  28     int hh=REGION_GEOM(wwin).h/2;
  29     int xdiv, ydiv;
  30     int tmpx, tmpy, atmpx, atmpy;
  31
  32     p_dx1mul=0;
  33     p_dx2mul=0;
  34     p_dy1mul=0;
  35     p_dy2mul=0;
  36
  37     tmpx=ev->x-ww;
  38     tmpy=hh-ev->y;
  39     xdiv=ww/2;
  40     ydiv=hh/2;
  41     atmpx=abs(tmpx);
  42     atmpy=abs(tmpy);
  43
  44     if(xdiv<MINCORNER && xdiv>1){
  45         xdiv=ww-MINCORNER;
  46         if(xdiv<1)
  47             xdiv=1;
  48     }
  49
  50     if(ydiv<MINCORNER && ydiv>1){
  51         ydiv=hh-MINCORNER;
  52         if(ydiv<1)
  53             ydiv=1;
  54     }
  55
  56     if(xdiv==0){
  57         p_dx2mul=1;
  58     }else if(hh*atmpx/xdiv>=tmpy && -hh*atmpx/xdiv<=tmpy){
  59         p_dx1mul=(tmpx<0);
  60         p_dx2mul=(tmpx>=0);
  61     }
  62
  63     if(ydiv==0){
  64         p_dy2mul=1;
  65     }else if(ww*atmpy/ydiv>=tmpx && -ww*atmpy/ydiv<=tmpx){
  66         p_dy1mul=(tmpy>0);
  67         p_dy2mul=(tmpy<=0);
  68     }
  69 }
  70
  71
  72 static void p_moveres_end(WWindow *wwin, XButtonEvent *ev)
  73 {
  74     WMoveresMode *mode=moveres_mode((WRegion*)wwin);
  75     if(mode!=NULL)
  76         moveresmode_do_end(mode, TRUE);
  77 }
  78
  79
  80 static void p_moveres_cancel(WWindow *wwin)
  81 {
  82     WMoveresMode *mode=moveres_mode((WRegion*)wwin);
  83     if(mode!=NULL)
  84         moveresmode_do_end(mode, FALSE);
  85 }
  86
  87
  88 static void confine_to_parent(WWindow *wwin)
  89 {
  90     WRegion *par=REGION_PARENT_REG(wwin);
  91     if(par!=NULL)
  92         ioncore_grab_confine_to(region_xwindow(par));
  93 }
  94
  95
  96 static void p_resize_motion(WWindow *wwin, XMotionEvent *ev, int dx, int dy)
  97 {
  98     WMoveresMode *mode=moveres_mode((WRegion*)wwin);
  99     if(mode!=NULL){
 100         moveresmode_delta_resize(mode, p_dx1mul*dx, p_dx2mul*dx,
 101                                  p_dy1mul*dy, p_dy2mul*dy, NULL);
 102     }
 103 }
 104
 105
 106 static void p_resize_begin(WWindow *wwin, XMotionEvent *ev, int dx, int dy)
 107 {
 108     region_begin_resize((WRegion*)wwin, NULL, TRUE);
 109     p_resize_motion(wwin, ev, dx, dy);
 110 }
 111
 112
 113 /*EXTL_DOC
 114  * Start resizing \var{wwin} with the mouse or other pointing device.
 115  * This function should only be used by binding it to \emph{mpress} or
 116  * \emph{mdrag} action.
 117  */
 118 EXTL_EXPORT_MEMBER
 119 void window_p_resize(WWindow *wwin)
 120 {
 121     if(!ioncore_set_drag_handlers((WRegion*)wwin,
 122                                   (WMotionHandler*)p_resize_begin,
 123                                   (WMotionHandler*)p_resize_motion,
 124                                   (WButtonHandler*)p_moveres_end,
 125                                   NULL,
 126                                   (GrabKilledHandler*)p_moveres_cancel))
 127         return;
 128
 129     confine_to_parent(wwin);
 130 }
 131
 132
 133 /*}}}*/
 134
 135
 136 /*{{{ Move */
 137
 138
 139 static void p_move_motion(WWindow *wwin, XMotionEvent *ev, int dx, int dy)
 140 {
 141     WMoveresMode *mode=moveres_mode((WRegion*)wwin);
 142     if(mode!=NULL)
 143         moveresmode_delta_move(mode, dx, dy, NULL);
 144 }
 145
 146
 147 static void p_move_begin(WWindow *wwin, XMotionEvent *ev, int dx, int dy)
 148 {
 149     region_begin_move((WRegion*)wwin, NULL, TRUE);
 150     p_move_motion(wwin, ev, dx, dy);
 151 }
 152
 153
 154 /*EXTL_DOC
 155  * Start moving \var{wwin} with the mouse or other pointing device.
 156  * This function should only be used by binding it to \emph{mpress} or
 157  * \emph{mdrag} action.
 158  */
 159 EXTL_EXPORT_MEMBER
 160 void window_p_move(WWindow *wwin)
 161 {
 162     if(!ioncore_set_drag_handlers((WRegion*)wwin,
 163                                   (WMotionHandler*)p_move_begin,
 164                                   (WMotionHandler*)p_move_motion,
 165                                   (WButtonHandler*)p_moveres_end,
 166                                   NULL,
 167                                   (GrabKilledHandler*)p_moveres_cancel))
 168         return;
 169
 170     confine_to_parent(wwin);
 171 }
 172
 173
 174 /*}}}*/