wmressel/src/wmgeneral/wmgeneral.c

   1 /*
   2         Best viewed with vim5, using ts=4
   3
   4         wmgeneral was taken from wmppp.
   5
   6         It has a lot of routines which most of the wm* programs use.
   7
   8         ------------------------------------------------------------
   9
  10         Author: Martijn Pieterse (pieterse@xs4all.nl)
  11
  12         ---
  13         CHANGES:
  14         ---
  15         02/05/1998 (Martijn Pieterse, pieterse@xs4all.nl)
  16                 * changed the read_rc_file to parse_rcfile, as suggester by Marcelo E. Magallon
  17                 * debugged the parse_rc file.
  18         30/04/1998 (Martijn Pieterse, pieterse@xs4all.nl)
  19                 * Ripped similar code from all the wm* programs,
  20                   and put them in a single file.
  21
  22 */
  23
  24 #include <stdlib.h>
  25 #include <stdio.h>
  26 #include <string.h>
  27 #include <unistd.h>
  28 #include <ctype.h>
  29 #include <stdarg.h>
  30
  31 #include <X11/Xlib.h>
  32 #include <X11/xpm.h>
  33 #include <X11/extensions/shape.h>
  34
  35 #include "wmgeneral.h"
  36
  37   /*****************/
  38  /* X11 Variables */
  39 /*****************/
  40
  41 Window          Root;
  42 int                     screen;
  43 int                     x_fd;
  44 int                     d_depth;
  45 XSizeHints      mysizehints;
  46 XWMHints        mywmhints;
  47 Pixel           back_pix, fore_pix;
  48 char            *Geometry = "";
  49 Window          iconwin, win;
  50 GC                      NormalGC;
  51 XpmIcon         wmgen;
  52 Pixmap          pixmask;
  53
  54   /*****************/
  55  /* Mouse Regions */
  56 /*****************/
  57
  58 typedef struct {
  59         int             enable;
  60         int             top;
  61         int             bottom;
  62         int             left;
  63         int             right;
  64 } MOUSE_REGION;
  65
  66 MOUSE_REGION    mouse_region[MAX_MOUSE_REGION];
  67
  68   /***********************/
  69  /* Function Prototypes */
  70 /***********************/
  71
  72 static void GetXPM(XpmIcon *, char **);
  73 static Pixel GetColor(char *);
  74 void RedrawWindow(void);
  75 void AddMouseRegion(int, int, int, int, int);
  76 int CheckMouseRegion(int, int);
  77
  78 /*******************************************************************************\
  79 |* read_rc_file                                                                                                                            *|
  80 \*******************************************************************************/
  81
  82 void parse_rcfile(const char *filename, rckeys *keys) {
  83
  84         char    *p;
  85         char    temp[128];
  86         char    *tokens = " :\t\n";
  87         FILE    *fp;
  88         int             i,key;
  89
  90         fp = fopen(filename, "r");
  91         if (fp) {
  92                 while (fgets(temp, 128, fp)) {
  93                         key = 0;
  94                         while (key >= 0 && keys[key].label) {
  95                                 if ((p = strstr(temp, keys[key].label))) {
  96                                         p += strlen(keys[key].label);
  97                                         p += strspn(p, tokens);
  98                                         if ((i = strcspn(p, "#\n"))) p[i] = 0;
  99                                         free(*keys[key].var);
 100                                         *keys[key].var = strdup(p);
 101                                         key = -1;
 102                                 } else key++;
 103                         }
 104                 }
 105                 fclose(fp);
 106         }
 107 }
 108
 109
 110 /*******************************************************************************\
 111 |* GetXPM                                                                                                                                          *|
 112 \*******************************************************************************/
 113
 114 static void GetXPM(XpmIcon *wmgen, char *pixmap_bytes[]) {
 115
 116         XWindowAttributes       attributes;
 117         int                                     err;
 118
 119         /* For the colormap */
 120         XGetWindowAttributes(display, Root, &attributes);
 121
 122         wmgen->attributes.valuemask |= (XpmReturnPixels | XpmReturnExtensions);
 123
 124         err = XpmCreatePixmapFromData(display, Root, pixmap_bytes, &(wmgen->pixmap),
 125                                         &(wmgen->mask), &(wmgen->attributes));
 126
 127         if (err != XpmSuccess) {
 128                 fprintf(stderr, "Not enough free colorcells.\n");
 129                 exit(1);
 130         }
 131 }
 132
 133 /*******************************************************************************\
 134 |* GetColor                                                                                                                                        *|
 135 \*******************************************************************************/
 136
 137 static Pixel GetColor(char *name) {
 138
 139         XColor                          color;
 140         XWindowAttributes       attributes;
 141
 142         XGetWindowAttributes(display, Root, &attributes);
 143
 144         color.pixel = 0;
 145         if (!XParseColor(display, attributes.colormap, name, &color)) {
 146                 fprintf(stderr, "wm.app: can't parse %s.\n", name);
 147         } else if (!XAllocColor(display, attributes.colormap, &color)) {
 148                 fprintf(stderr, "wm.app: can't allocate %s.\n", name);
 149         }
 150         return color.pixel;
 151 }
 152
 153 /*******************************************************************************\
 154 |* flush_expose                                                                                                                            *|
 155 \*******************************************************************************/
 156
 157 static int flush_expose(Window w) {
 158
 159         XEvent          dummy;
 160         int                     i=0;
 161
 162         while (XCheckTypedWindowEvent(display, w, Expose, &dummy))
 163                 i++;
 164
 165         return i;
 166 }
 167
 168 /*******************************************************************************\
 169 |* RedrawWindow                                                                                                                            *|
 170 \*******************************************************************************/
 171
 172 void RedrawWindow(void) {
 173
 174         flush_expose(iconwin);
 175         XCopyArea(display, wmgen.pixmap, iconwin, NormalGC,
 176                                 0,0, wmgen.attributes.width, wmgen.attributes.height, 0,0);
 177         flush_expose(win);
 178         XCopyArea(display, wmgen.pixmap, win, NormalGC,
 179                                 0,0, wmgen.attributes.width, wmgen.attributes.height, 0,0);
 180 }
 181
 182 /*******************************************************************************\
 183 |* RedrawWindowXY                                                                                                                          *|
 184 \*******************************************************************************/
 185
 186 void RedrawWindowXY(int x, int y) {
 187
 188         flush_expose(iconwin);
 189         XCopyArea(display, wmgen.pixmap, iconwin, NormalGC,
 190                                 x,y, wmgen.attributes.width, wmgen.attributes.height, 0,0);
 191         flush_expose(win);
 192         XCopyArea(display, wmgen.pixmap, win, NormalGC,
 193                                 x,y, wmgen.attributes.width, wmgen.attributes.height, 0,0);
 194 }
 195
 196 /*******************************************************************************\
 197 |* AddMouseRegion                                                                                                                          *|
 198 \*******************************************************************************/
 199
 200 void AddMouseRegion(int index, int left, int top, int right, int bottom) {
 201
 202         if (index < MAX_MOUSE_REGION) {
 203                 mouse_region[index].enable = 1;
 204                 mouse_region[index].top = top;
 205                 mouse_region[index].left = left;
 206                 mouse_region[index].bottom = bottom;
 207                 mouse_region[index].right = right;
 208         }
 209 }
 210
 211 /*******************************************************************************\
 212 |* CheckMouseRegion                                                                                                                        *|
 213 \*******************************************************************************/
 214
 215 int CheckMouseRegion(int x, int y) {
 216
 217         int             i;
 218         int             found;
 219
 220         found = 0;
 221
 222         for (i=0; i<MAX_MOUSE_REGION && !found; i++) {
 223                 if (mouse_region[i].enable &&
 224                         x <= mouse_region[i].right &&
 225                         x >= mouse_region[i].left &&
 226                         y <= mouse_region[i].bottom &&
 227                         y >= mouse_region[i].top)
 228                         found = 1;
 229         }
 230         if (!found) return -1;
 231         return (i-1);
 232 }
 233
 234 /*******************************************************************************\
 235 |* copyXPMArea                                                                                                                             *|
 236 \*******************************************************************************/
 237
 238 void copyXPMArea(int x, int y, int sx, int sy, int dx, int dy) {
 239
 240         XCopyArea(display, wmgen.pixmap, wmgen.pixmap, NormalGC, x, y, sx, sy, dx, dy);
 241
 242 }
 243
 244 /*******************************************************************************\
 245 |* copyXBMArea                                                                                                                             *|
 246 \*******************************************************************************/
 247
 248 void copyXBMArea(int x, int y, int sx, int sy, int dx, int dy) {
 249
 250         XCopyArea(display, wmgen.mask, wmgen.pixmap, NormalGC, x, y, sx, sy, dx, dy);
 251 }
 252
 253
 254 /*******************************************************************************\
 255 |* setMaskXY                                                                                                                               *|
 256 \*******************************************************************************/
 257
 258 void setMaskXY(int x, int y) {
 259
 260          XShapeCombineMask(display, win, ShapeBounding, x, y, pixmask, ShapeSet);
 261          XShapeCombineMask(display, iconwin, ShapeBounding, x, y, pixmask, ShapeSet);
 262 }
 263
 264 /*******************************************************************************\
 265 |* openXwindow                                                                                                                             *|
 266 \*******************************************************************************/
 267 void openXwindow(int argc, char *argv[], char *pixmap_bytes[], char *pixmask_bits, int pixmask_width, int pixmask_height) {
 268
 269         unsigned int    borderwidth = 1;
 270         XClassHint              classHint;
 271         char                    *display_name = NULL;
 272         char                    *wname = argv[0];
 273         XTextProperty   name;
 274
 275         XGCValues               gcv;
 276         unsigned long   gcm;
 277
 278
 279         int                             dummy=0;
 280         int                             i;
 281
 282         for (i=1; argv[i]; i++) {
 283                 if (!strcmp(argv[i], "--display"))
 284                         display_name = argv[i+1];
 285         }
 286
 287         if (!(display = XOpenDisplay(display_name))) {
 288                 fprintf(stderr, "%s: can't open display %s\n",
 289                                                 wname, XDisplayName(display_name));
 290                 exit(1);
 291         }
 292         screen  = DefaultScreen(display);
 293         Root    = RootWindow(display, screen);
 294         d_depth = DefaultDepth(display, screen);
 295         x_fd    = XConnectionNumber(display);
 296
 297         /* Convert XPM to XImage */
 298         GetXPM(&wmgen, pixmap_bytes);
 299
 300         /* Create a window to hold the stuff */
 301         mysizehints.flags = USSize | USPosition;
 302         mysizehints.x = 0;
 303         mysizehints.y = 0;
 304
 305         back_pix = GetColor("white");
 306         fore_pix = GetColor("black");
 307
 308         XWMGeometry(display, screen, Geometry, NULL, borderwidth, &mysizehints,
 309                                 &mysizehints.x, &mysizehints.y,&mysizehints.width,&mysizehints.height, &dummy);
 310
 311         mysizehints.width = 64;
 312         mysizehints.height = 64;
 313
 314         win = XCreateSimpleWindow(display, Root, mysizehints.x, mysizehints.y,
 315                                 mysizehints.width, mysizehints.height, borderwidth, fore_pix, back_pix);
 316
 317         iconwin = XCreateSimpleWindow(display, win, mysizehints.x, mysizehints.y,
 318                                 mysizehints.width, mysizehints.height, borderwidth, fore_pix, back_pix);
 319
 320         /* Activate hints */
 321         XSetWMNormalHints(display, win, &mysizehints);
 322         classHint.res_name = wname;
 323         classHint.res_class = wname;
 324         XSetClassHint(display, win, &classHint);
 325
 326         XSelectInput(display, win, ButtonPressMask | ExposureMask | ButtonReleaseMask | PointerMotionMask | StructureNotifyMask);
 327         XSelectInput(display, iconwin, ButtonPressMask | ExposureMask | ButtonReleaseMask | PointerMotionMask | StructureNotifyMask);
 328
 329         if (XStringListToTextProperty(&wname, 1, &name) == 0) {
 330                 fprintf(stderr, "%s: can't allocate window name\n", wname);
 331                 exit(1);
 332         }
 333
 334         XSetWMName(display, win, &name);
 335
 336         /* Create GC for drawing */
 337
 338         gcm = GCForeground | GCBackground | GCGraphicsExposures;
 339         gcv.foreground = fore_pix;
 340         gcv.background = back_pix;
 341         gcv.graphics_exposures = 0;
 342         NormalGC = XCreateGC(display, Root, gcm, &gcv);
 343
 344         /* ONLYSHAPE ON */
 345
 346         pixmask = XCreateBitmapFromData(display, win, pixmask_bits, pixmask_width, pixmask_height);
 347
 348         XShapeCombineMask(display, win, ShapeBounding, 0, 0, pixmask, ShapeSet);
 349         XShapeCombineMask(display, iconwin, ShapeBounding, 0, 0, pixmask, ShapeSet);
 350
 351         /* ONLYSHAPE OFF */
 352
 353         mywmhints.initial_state = WithdrawnState;
 354         mywmhints.icon_window = iconwin;
 355         mywmhints.icon_x = mysizehints.x;
 356         mywmhints.icon_y = mysizehints.y;
 357         mywmhints.window_group = win;
 358         mywmhints.flags = StateHint | IconWindowHint | IconPositionHint | WindowGroupHint;
 359
 360         XSetWMHints(display, win, &mywmhints);
 361
 362         XSetCommand(display, win, argv, argc);
 363         XMapWindow(display, win);
 364
 365 }