wmmenu/buttonbar.c

   1 #include <assert.h>
   2
   3 #include <libdockapp/dockapp.h>
   4
   5 #include "buttonbar.h"
   6 #include "xobjects.h"
   7 #include "pixmaps.h"
   8 #include "options.h"
   9 #include "menu.h"
  10
  11 /* item number for last known highlight position */
  12 static int OldPos = -1 ;
  13 /* Graphic context used to draw highlight */
  14 static GC HighlightGC = 0 ;
  15 /* position where bar will be shown next time */
  16 static int BarX=0, BarY=0 ;
  17
  18 extern void ButtonBar_Build (void)
  19 {
  20     int i, n ;
  21     int h, j, w ;
  22     int width, height ;
  23     GC imgOp ;
  24     GC maskOp ;
  25     XGCValues gc ;
  26     Pixmap image, mask ;
  27     int x, y ;
  28     int x0, y0 ;
  29     XSetWindowAttributes wa ;
  30
  31     n = Menu_GetNbEntries () ;
  32     assert (n > 0) ;
  33     h = Menu_GetNbRows () ;
  34     w = Menu_GetNbColumns () ;
  35     width = TileXSize * w ;
  36     height = TileYSize * h ;
  37
  38
  39     ButtonBarWindow = XCreateSimpleWindow (
  40         DADisplay, DefaultRootWindow (DADisplay), 0, 0, width, height, 0,
  41         BlackPixel (DADisplay, DefaultScreen (DADisplay)),
  42         BlackPixel (DADisplay, DefaultScreen (DADisplay))) ;
  43     ButtonBarImage = XCreatePixmap (DADisplay, ButtonBarWindow,
  44         width, height, DADepth) ;
  45     imgOp = XCreateGC (DADisplay, ButtonBarWindow, 0, & gc) ;
  46
  47     HighlightBehindMask = XCreatePixmap (DADisplay, ButtonBarWindow,
  48         width, height, 1) ;
  49     maskOp = XCreateGC (DADisplay, HighlightBehindMask, 0, & gc) ;
  50
  51     /* first apply tile to whole bar */
  52     for (i=0; i<w; i++)
  53         for (j=0; j<h; j++)
  54             XCopyArea (DADisplay, TileImage, ButtonBarImage, imgOp, 0, 0,
  55                 TileXSize, TileYSize, TileXSize*i, TileYSize*j) ;
  56
  57     /* initialize "behind" mask to all 1's */
  58     XSetFunction (DADisplay, maskOp, GXset) ;
  59     XFillRectangle (DADisplay, HighlightBehindMask, maskOp,
  60         0, 0, width, height) ;
  61     /* and copy behind mask cells from highlight mask */
  62     if (HighlightMask != 0)
  63     {
  64         XSetFunction (DADisplay, maskOp, GXcopy) ;
  65         for (i=0; i<w; i++)
  66             for (j=0; j<h; j++)
  67                 XCopyArea (DADisplay, HighlightMask, HighlightBehindMask,
  68                     maskOp,
  69                     0, 0, TileXSize, TileYSize, TileXSize*i, TileYSize*j) ;
  70     }
  71
  72     /* then apply each pixmap of menu entry */
  73     /* and build a global invert mask for highlight "behind" */
  74     for (i=0; i<n; i++)
  75     {
  76         Pixmaps_FindLoad (Menu_GetEntryPixmap (i),
  77             & image, & mask, & width, & height) ;
  78
  79         /* center pixmap within its cell */
  80         x = (width >= TileXSize ? 0 : (TileXSize-width)/2) ;
  81         y = (height >= TileYSize ? 0 : (TileYSize-height)/2) ;
  82
  83         /* use GC to draw with pixmap's mask in the right cell */
  84         x0 = TileXSize*(i/h) ;
  85         y0 = TileYSize*(i%h) ;
  86         gc.clip_x_origin = x0 + x ;
  87         gc.clip_y_origin = y0 + y ;
  88         gc.clip_mask = mask ; /* may be None */
  89         XChangeGC (DADisplay, imgOp,
  90             GCClipXOrigin | GCClipYOrigin | GCClipMask, & gc) ;
  91         XCopyArea (DADisplay, image, ButtonBarImage, imgOp, 0, 0,
  92             width, height, gc.clip_x_origin, gc.clip_y_origin) ;
  93
  94         /* update highlight behind mask: cell &= ~iconmask */
  95         if (HighlightBehind && mask != None)
  96         {
  97             /* use "andInverted" (dst &= ~src) */
  98             XSetFunction (DADisplay, maskOp, GXandInverted) ;
  99             XCopyArea (DADisplay, mask, HighlightBehindMask, maskOp,
 100                 0, 0, width, height, gc.clip_x_origin, gc.clip_y_origin) ;
 101         }
 102         /* or highlight behind cell &= 0 if no mask */
 103         else
 104         if (HighlightBehind && mask == None)
 105         {
 106             XSetFunction (DADisplay, maskOp, GXclear) ;
 107             XFillRectangle (DADisplay, HighlightBehindMask, maskOp,
 108                 gc.clip_x_origin, gc.clip_y_origin, width, height) ;
 109         }
 110
 111         XFreePixmap (DADisplay, image) ;
 112         if (mask != 0) XFreePixmap (DADisplay, mask) ;
 113     }
 114
 115     XFreeGC (DADisplay, imgOp) ;
 116     XFreeGC (DADisplay, maskOp) ;
 117
 118     wa.background_pixmap = ButtonBarImage ;
 119     wa.event_mask = ButtonPressMask | ButtonReleaseMask ;
 120     if (! ClickOnly) wa.event_mask |= EnterWindowMask | LeaveWindowMask ;
 121     if (HighlightImage != 0) wa.event_mask |= PointerMotionMask ;
 122     wa.override_redirect = True ;
 123     XChangeWindowAttributes (DADisplay, ButtonBarWindow,
 124         CWBackPixmap | CWEventMask | CWOverrideRedirect, & wa) ;
 125 }
 126
 127 extern void ButtonBar_SetPositionFromDockApp (int dockx, int docky,
 128     int dockw, int dockh)
 129 {
 130     int xMid, scrWidth, h, scrHeight ;
 131     int x, y ;
 132
 133     (void) dockh;
 134
 135     /* compute y */
 136     scrHeight = DisplayHeight (DADisplay, DefaultScreen (DADisplay)) ;
 137     y = docky ;
 138     h = TileYSize * Menu_GetNbRows () ;
 139     if (y + h >= scrHeight)
 140     {
 141         y = scrHeight - h ;
 142     }
 143
 144     /* compute x */
 145     scrWidth = DisplayWidth (DADisplay, DefaultScreen (DADisplay)) ;
 146     xMid = dockx + dockw/2 ;
 147     if (xMid*2 < scrWidth)
 148     {
 149         /* we are rather on left, expand to right */
 150         x = dockx + dockw ;
 151     }
 152     else
 153     {
 154         /* we are rather on right, expand to left */
 155         x = dockx - TileXSize * Menu_GetNbColumns () ;
 156     }
 157
 158     BarX = x ;
 159     BarY = y ;
 160 }
 161
 162 extern void ButtonBar_Show (void)
 163 {
 164     XMoveWindow (DADisplay, ButtonBarWindow, BarX, BarY) ;
 165     XMapRaised (DADisplay, ButtonBarWindow) ;
 166 }
 167
 168 static void BuildHighlightGC (void)
 169 {
 170     XGCValues gc ;
 171     gc.clip_mask = HighlightBehindMask ;
 172     HighlightGC = XCreateGC (DADisplay, DAWindow,
 173         GCClipMask, & gc) ;
 174 }
 175
 176 extern void ButtonBar_Highlight (int col, int row)
 177 {
 178     int h ;
 179     int newPos ;
 180
 181     if (HighlightImage == 0) return ;
 182
 183     h = Menu_GetNbRows () ;
 184     newPos = col*h + row ;
 185
 186     if (newPos != OldPos)
 187     {
 188         int x, y ;
 189         XGCValues gc ;
 190
 191         /* first clear old highlight position */
 192         ButtonBar_Unhighlight () ;
 193
 194         /* don't draw highlight on empty slots */
 195         if (newPos >= Menu_GetNbEntries ()) return ;
 196
 197         /* compute new draw position */
 198         x = col * TileXSize ;
 199         y = row * TileYSize ;
 200         /* and draw it */
 201         if (HighlightGC == 0) BuildHighlightGC () ;
 202         gc.clip_x_origin = HighlightBehind ? 0 : x ;
 203         gc.clip_y_origin = HighlightBehind ? 0 : y ;
 204         XChangeGC (DADisplay, HighlightGC,
 205             GCClipXOrigin | GCClipYOrigin, & gc) ;
 206         XCopyArea (DADisplay, HighlightImage, ButtonBarWindow,
 207             HighlightGC, 0, 0, TileXSize, TileYSize, x, y) ;
 208
 209         OldPos = newPos ;
 210     }
 211 }
 212
 213 extern void ButtonBar_Unhighlight (void)
 214 {
 215     int x, y, h ;
 216
 217     if (HighlightImage == 0 || OldPos < 0) return ;
 218
 219     h = Menu_GetNbRows () ;
 220     x = (OldPos / h) * TileXSize ;
 221     y = (OldPos % h) * TileYSize ;
 222     XClearArea (DADisplay, ButtonBarWindow,
 223                 x, y, TileXSize, TileYSize, False) ;
 224     OldPos = -1 ;
 225 }
 226
 227 extern void ButtonBar_Hide (void)
 228 {
 229     XUnmapWindow (DADisplay, ButtonBarWindow) ;
 230     OldPos = -1 ;
 231 }
 232
 233 extern void ButtonBar_Rebuild (void)
 234 {
 235     XDestroyWindow (DADisplay, ButtonBarWindow) ;
 236     if (HighlightGC != 0)
 237     {
 238         XFreeGC (DADisplay, HighlightGC) ;
 239         HighlightGC = 0 ;
 240     }
 241     OldPos = -1 ;
 242     ButtonBar_Build () ;
 243 }