ioncore/frame-pointer.c

   1 /*
   2  * ion/ioncore/frame-pointer.c
   3  *
   4  * Copyright (c) Tuomo Valkonen 1999-2009.
   5  *
   6  * See the included file LICENSE for details.
   7  */
   8
   9 #include <string.h>
  10
  11 #include <libtu/objp.h>
  12
  13 #include "common.h"
  14 #include "global.h"
  15 #include "pointer.h"
  16 #include "cursor.h"
  17 #include "focus.h"
  18 #include "attach.h"
  19 #include "resize.h"
  20 #include "grab.h"
  21 #include "frame.h"
  22 #include "framep.h"
  23 #include "frame-pointer.h"
  24 #include "frame-draw.h"
  25 #include "bindmaps.h"
  26 #include "infowin.h"
  27 #include "rectangle.h"
  28 #include "xwindow.h"
  29 #include "names.h"
  30 #include "presize.h"
  31 #include "llist.h"
  32
  33
  34 static int p_tab_x=0, p_tab_y=0, p_tabnum=-1;
  35 static WInfoWin *tabdrag_infowin=NULL;
  36
  37
  38 /*{{{ Frame press */
  39
  40
  41 static WRegion *sub_at_tab(WFrame *frame)
  42 {
  43     return mplex_mx_nth((WMPlex*)frame, p_tabnum);
  44 }
  45
  46
  47 int frame_press(WFrame *frame, XButtonEvent *ev, WRegion **reg_ret)
  48 {
  49     WRegion *sub=NULL;
  50     WRectangle g;
  51
  52     p_tabnum=-1;
  53
  54     window_p_resize_prepare((WWindow*)frame, ev);
  55
  56     /* Check tab */
  57
  58     frame_bar_geom(frame, &g);
  59
  60     /* Borders act like tabs at top of the parent region */
  61     if(REGION_GEOM(frame).y==0){
  62         g.h+=g.y;
  63         g.y=0;
  64     }
  65
  66     if(frame->barmode!=FRAME_BAR_NONE &&
  67        rectangle_contains(&g, ev->x, ev->y)){
  68         p_tabnum=frame_tab_at_x(frame, ev->x);
  69
  70         region_rootpos((WRegion*)frame, &p_tab_x, &p_tab_y);
  71         p_tab_x+=frame_nth_tab_x(frame, p_tabnum);
  72         p_tab_y+=g.y;
  73
  74         sub=mplex_mx_nth(&(frame->mplex), p_tabnum);
  75
  76         if(reg_ret!=NULL)
  77             *reg_ret=sub;
  78
  79         return FRAME_AREA_TAB;
  80     }else{
  81         WLListIterTmp tmp;
  82         FRAME_MX_FOR_ALL(sub, frame, tmp){
  83             p_tabnum++;
  84             if(sub==FRAME_CURRENT(frame))
  85                 break;
  86         }
  87
  88         if(sub!=NULL){
  89             p_tab_x=ev->x_root-frame_nth_tab_w(frame, p_tabnum)/2;
  90             p_tab_y=ev->y_root-frame->bar_h/2;
  91         }else{
  92             p_tabnum=-1;
  93         }
  94     }
  95
  96
  97     /* Check border */
  98
  99     frame_border_inner_geom(frame, &g);
 100
 101     if(rectangle_contains(&g, ev->x, ev->y))
 102         return FRAME_AREA_CLIENT;
 103
 104     return FRAME_AREA_BORDER;
 105 }
 106
 107
 108 /*}}}*/
 109
 110
 111 /*{{{ Tab drag */
 112
 113
 114 static ExtlExportedFn *tabdrag_safe_fns[]={
 115     (ExtlExportedFn*)&mplex_switch_nth,
 116     (ExtlExportedFn*)&mplex_switch_next,
 117     (ExtlExportedFn*)&mplex_switch_prev,
 118     NULL
 119 };
 120
 121 static ExtlSafelist tabdrag_safelist=EXTL_SAFELIST_INIT(tabdrag_safe_fns);
 122
 123
 124 #define BUTTONS_MASK \
 125     (Button1Mask|Button2Mask|Button3Mask|Button4Mask|Button5Mask)
 126
 127
 128 static bool tabdrag_kbd_handler(WRegion *reg, XEvent *xev)
 129 {
 130     XKeyEvent *ev=&xev->xkey;
 131     WBinding *binding=NULL;
 132     WBindmap **bindptr;
 133
 134     if(ev->type==KeyRelease)
 135         return FALSE;
 136
 137     assert(reg!=NULL);
 138
 139     binding=bindmap_lookup_binding(ioncore_screen_bindmap, BINDING_KEYPRESS,
 140                                    ev->state&~BUTTONS_MASK, ev->keycode);
 141
 142     if(binding!=NULL && binding->func!=extl_fn_none()){
 143         extl_protect(&tabdrag_safelist);
 144         extl_call(binding->func, "o", NULL, region_screen_of(reg));
 145         extl_unprotect(&tabdrag_safelist);
 146     }
 147
 148     return FALSE;
 149 }
 150
 151
 152 static void setup_dragwin(WFrame *frame, uint tab)
 153 {
 154     WRectangle g;
 155     WRootWin *rw;
 156     WFitParams fp;
 157     const char *tab_style=framemode_get_tab_style(frame->mode);
 158
 159     assert(tabdrag_infowin==NULL);
 160
 161     rw=region_rootwin_of((WRegion*)frame);
 162
 163     fp.mode=REGION_FIT_EXACT;
 164     fp.g.x=p_tab_x;
 165     fp.g.y=p_tab_y;
 166     fp.g.w=frame_nth_tab_w(frame, tab);
 167     fp.g.h=frame->bar_h;
 168
 169     tabdrag_infowin=create_infowin((WWindow*)rw, &fp, tab_style);
 170
 171     if(tabdrag_infowin==NULL)
 172         return;
 173
 174     frame_setup_dragwin_style(frame, infowin_stylespec(tabdrag_infowin), tab);
 175
 176     if(frame->titles[tab].text!=NULL){
 177         char *buf=INFOWIN_BUFFER(tabdrag_infowin);
 178         strncpy(buf, frame->titles[tab].text, INFOWIN_BUFFER_LEN-1);
 179         buf[INFOWIN_BUFFER_LEN-1]='\0';
 180     }
 181 }
 182
 183
 184 static void p_tabdrag_motion(WFrame *frame, XMotionEvent *ev,
 185                              int dx, int dy)
 186 {
 187     WRootWin *rootwin=region_rootwin_of((WRegion*)frame);
 188
 189     p_tab_x+=dx;
 190     p_tab_y+=dy;
 191
 192     if(tabdrag_infowin!=NULL){
 193         WRectangle g;
 194         g.x=p_tab_x;
 195         g.y=p_tab_y;
 196         g.w=REGION_GEOM(tabdrag_infowin).w;
 197         g.h=REGION_GEOM(tabdrag_infowin).h;
 198         region_fit((WRegion*)tabdrag_infowin, &g, REGION_FIT_EXACT);
 199     }
 200 }
 201
 202
 203 static void p_tabdrag_begin(WFrame *frame, XMotionEvent *ev,
 204                             int dx, int dy)
 205 {
 206     WRootWin *rootwin=region_rootwin_of((WRegion*)frame);
 207
 208     if(p_tabnum<0)
 209         return;
 210
 211     ioncore_change_grab_cursor(IONCORE_CURSOR_DRAG);
 212
 213     setup_dragwin(frame, p_tabnum);
 214
 215     frame->tab_dragged_idx=p_tabnum;
 216     frame_update_attr_nth(frame, p_tabnum);
 217
 218     frame_draw_bar(frame, FALSE);
 219
 220     p_tabdrag_motion(frame, ev, dx, dy);
 221
 222     if(tabdrag_infowin!=NULL)
 223         window_map((WWindow*)tabdrag_infowin);
 224 }
 225
 226
 227 static WRegion *fnd(Window root, int x, int y)
 228 {
 229     Window win=root;
 230     int dstx, dsty;
 231     WRegion *reg=NULL;
 232     WWindow *w=NULL;
 233     WScreen *scr;
 234
 235     FOR_ALL_SCREENS(scr){
 236         if(region_root_of((WRegion*)scr)==root &&
 237            rectangle_contains(&REGION_GEOM(scr), x, y)){
 238             break;
 239         }
 240     }
 241
 242     w=(WWindow*)scr;
 243
 244     while(w!=NULL){
 245         if(HAS_DYN(w, region_handle_drop))
 246             reg=(WRegion*)w;
 247
 248         if(!XTranslateCoordinates(ioncore_g.dpy, root, w->win,
 249                                   x, y, &dstx, &dsty, &win)){
 250             break;
 251         }
 252
 253         w=XWINDOW_REGION_OF_T(win, WWindow);
 254         /*x=dstx;
 255         y=dsty;*/
 256     }
 257
 258     return reg;
 259 }
 260
 261
 262 static bool drop_ok(WRegion *mgr, WRegion *reg)
 263 {
 264     WRegion *reg2=mgr;
 265     for(reg2=mgr; reg2!=NULL; reg2=region_manager(reg2)){
 266         if(reg2==reg)
 267             goto err;
 268     }
 269
 270     for(reg2=REGION_PARENT_REG(mgr); reg2!=NULL; reg2=REGION_PARENT_REG(reg2)){
 271         if(reg2==reg)
 272             goto err;
 273     }
 274
 275     return TRUE;
 276
 277 err:
 278     warn(TR("Attempt to make region %s manage its ancestor %s."),
 279          region_name(mgr), region_name(reg));
 280     return FALSE;
 281 }
 282
 283
 284 static void tabdrag_deinit(WFrame *frame)
 285 {
 286     int idx=frame->tab_dragged_idx;
 287     frame->tab_dragged_idx=-1;
 288     frame_update_attr_nth(frame, idx);
 289
 290     if(tabdrag_infowin!=NULL){
 291         destroy_obj((Obj*)tabdrag_infowin);
 292         tabdrag_infowin=NULL;
 293     }
 294 }
 295
 296
 297 static void tabdrag_killed(WFrame *frame)
 298 {
 299     tabdrag_deinit(frame);
 300     if(!OBJ_IS_BEING_DESTROYED(frame))
 301         frame_draw_bar(frame, TRUE);
 302 }
 303
 304
 305 static void p_tabdrag_end(WFrame *frame, XButtonEvent *ev)
 306 {
 307     WRegion *sub=NULL;
 308     WRegion *dropped_on;
 309     Window win=None;
 310
 311     sub=sub_at_tab(frame);
 312
 313     tabdrag_deinit(frame);
 314
 315     /* Must be same root window */
 316     if(sub==NULL || ev->root!=region_root_of(sub))
 317         return;
 318
 319     dropped_on=fnd(ev->root, ev->x_root, ev->y_root);
 320
 321     if(dropped_on==NULL || dropped_on==(WRegion*)frame ||
 322        dropped_on==sub || !drop_ok(dropped_on, sub)){
 323         frame_draw_bar(frame, TRUE);
 324         return;
 325     }
 326
 327     if(region_handle_drop(dropped_on, p_tab_x, p_tab_y, sub))
 328         region_goto(dropped_on);
 329     else
 330         frame_draw_bar(frame, TRUE);
 331 }
 332
 333
 334 /*EXTL_DOC
 335  * Start dragging the tab that the user pressed on with the pointing device.
 336  * This function should only be used by binding it to \emph{mpress} or
 337  * \emph{mdrag} action with area \codestr{tab}.
 338  */
 339 EXTL_EXPORT_MEMBER
 340 void frame_p_tabdrag(WFrame *frame)
 341 {
 342     if(p_tabnum<0)
 343         return;
 344
 345     ioncore_set_drag_handlers((WRegion*)frame,
 346                         (WMotionHandler*)p_tabdrag_begin,
 347                         (WMotionHandler*)p_tabdrag_motion,
 348                         (WButtonHandler*)p_tabdrag_end,
 349                         tabdrag_kbd_handler,
 350                         (GrabKilledHandler*)tabdrag_killed);
 351 }
 352
 353
 354 /*}}}*/
 355
 356
 357 /*{{{ switch_tab */
 358
 359
 360 /*EXTL_DOC
 361  * Display the region corresponding to the tab that the user pressed on.
 362  * This function should only be used by binding it to a mouse action.
 363  */
 364 EXTL_EXPORT_MEMBER
 365 void frame_p_switch_tab(WFrame *frame)
 366 {
 367     /*WRegion *sub;*/
 368
 369     if(ioncore_pointer_grab_region()!=(WRegion*)frame)
 370         return;
 371
 372     /*
 373     sub=sub_at_tab(frame);
 374     if(sub!=NULL){
 375         bool mcf=region_may_control_focus((WRegion*)frame);
 376         region_goto_flags(sub, (mcf
 377                                 ? REGION_GOTO_FOCUS|REGION_GOTO_NOWARP
 378                                 : 0));
 379     }
 380     */
 381
 382     mplex_switch_nth((WMPlex*)frame, p_tabnum);
 383 }
 384
 385
 386 /*}}}*/
 387