WINGs/wframe.c

   1
   2 #include "WINGsP.h"
   3
   4
   5 typedef struct W_Frame {
   6     W_Class widgetClass;
   7     W_View *view;
   8
   9     char *caption;
  10
  11
  12     struct {
  13         WMReliefType relief:4;
  14         WMTitlePosition titlePosition:4;
  15     } flags;
  16 } Frame;
  17
  18
  19 #define DEFAULT_RELIEF  WRGroove
  20 #define DEFAULT_TITLE_POSITION  WTPAtTop
  21 #define DEFAULT_WIDTH           40
  22 #define DEFAULT_HEIGHT          40
  23
  24
  25 static void destroyFrame(Frame *fPtr);
  26 static void paintFrame(Frame *fPtr);
  27
  28
  29
  30 void
  31 WMSetFrameTitlePosition(WMFrame *fPtr, WMTitlePosition position)
  32 {
  33     fPtr->flags.titlePosition = position;
  34
  35    if (fPtr->view->flags.realized) {
  36         paintFrame(fPtr);
  37     }
  38 }
  39
  40
  41 void
  42 WMSetFrameRelief(WMFrame *fPtr, WMReliefType relief)
  43 {
  44     fPtr->flags.relief = relief;
  45
  46    if (fPtr->view->flags.realized) {
  47         paintFrame(fPtr);
  48     }
  49 }
  50
  51
  52 void
  53 WMSetFrameTitle(WMFrame *fPtr, char *title)
  54 {
  55     if (fPtr->caption)
  56         wfree(fPtr->caption);
  57     if (title)
  58         fPtr->caption = wstrdup(title);
  59     else
  60         fPtr->caption = NULL;
  61
  62    if (fPtr->view->flags.realized) {
  63         paintFrame(fPtr);
  64     }
  65 }
  66
  67
  68 static void
  69 paintFrame(Frame *fPtr)
  70 {
  71     W_View *view = fPtr->view;
  72     W_Screen *scrPtr = view->screen;
  73     int tx, ty, tw, th;
  74     int fy, fh;
  75     Bool drawTitle;
  76
  77     if (fPtr->caption!=NULL)
  78         th = WMFontHeight(scrPtr->normalFont);
  79     else {
  80         th = 0;
  81     }
  82
  83     fh = view->size.height;
  84     fy = 0;
  85
  86     switch (fPtr->flags.titlePosition) {
  87      case WTPAboveTop:
  88         ty = 0;
  89         fy = th + 4;
  90         fh = view->size.height - fy;
  91         break;
  92
  93      case WTPAtTop:
  94         ty = 0;
  95         fy = th/2;
  96         fh = view->size.height - fy;
  97         break;
  98
  99      case WTPBelowTop:
 100         ty = 4;
 101         fy = 0;
 102         fh = view->size.height;
 103         break;
 104
 105      case WTPAboveBottom:
 106         ty = view->size.height - th - 4;
 107         fy = 0;
 108         fh = view->size.height;
 109         break;
 110
 111      case WTPAtBottom:
 112         ty = view->size.height - th;
 113         fy = 0;
 114         fh = view->size.height - th/2;
 115         break;
 116
 117      case WTPBelowBottom:
 118         ty = view->size.height - th;
 119         fy = 0;
 120         fh = view->size.height - th - 4;
 121         break;
 122
 123      default:
 124         ty = 0;
 125         fy = 0;
 126         fh = view->size.height;
 127     }
 128
 129     if (fPtr->caption!=NULL && fPtr->flags.titlePosition!=WTPNoTitle) {
 130         tw = WMWidthOfString(scrPtr->normalFont, fPtr->caption,
 131                              strlen(fPtr->caption));
 132
 133         tx = (view->size.width - tw) / 2;
 134
 135         drawTitle = True;
 136     } else {
 137         drawTitle = False;
 138     }
 139
 140 /*    XClearArea(scrPtr->display, view->window, x, y, width, height, False);
 141  */
 142
 143     {
 144         XRectangle rect;
 145         Region region, tmp;
 146         GC gc[4];
 147         int i;
 148
 149         region = XCreateRegion();
 150
 151         if (drawTitle) {
 152             tmp = XCreateRegion();
 153             rect.x = tx;
 154             rect.y = ty;
 155             rect.width = tw;
 156             rect.height = th;
 157             XUnionRectWithRegion(&rect, tmp, tmp);
 158         }
 159         rect.x = 0;
 160         rect.y = 0;
 161         rect.width = view->size.width;
 162         rect.height = view->size.height;
 163         XUnionRectWithRegion(&rect, region, region);
 164         if (drawTitle) {
 165             XSubtractRegion(region, tmp, region);
 166             XDestroyRegion(tmp);
 167         }
 168         gc[0] = WMColorGC(scrPtr->black);
 169         gc[1] = WMColorGC(scrPtr->darkGray);
 170         gc[2] = WMColorGC(scrPtr->gray);
 171         gc[3] = WMColorGC(scrPtr->white);
 172
 173         for (i = 0; i < 4; i++) {
 174             XSetRegion(scrPtr->display, gc[i], region);
 175         }
 176         XDestroyRegion(region);
 177
 178         W_DrawReliefWithGC(scrPtr, view->window, 0, fy, view->size.width, fh,
 179                            fPtr->flags.relief, gc[0], gc[1], gc[2], gc[3]);
 180
 181         for (i = 0; i < 4; i++) {
 182             XSetClipMask(scrPtr->display, gc[i], None);
 183         }
 184     }
 185
 186     if (drawTitle) {
 187         WMDrawString(scrPtr, view->window, WMColorGC(scrPtr->black),
 188                      scrPtr->normalFont, tx, ty, fPtr->caption,
 189                      strlen(fPtr->caption));
 190     }
 191 }
 192
 193
 194
 195
 196
 197 static void
 198 handleEvents(XEvent *event, void *data)
 199 {
 200     Frame *fPtr = (Frame*)data;
 201
 202     CHECK_CLASS(data, WC_Frame);
 203
 204     switch (event->type) {
 205      case Expose:
 206         if (event->xexpose.count == 0)
 207             paintFrame(fPtr);
 208         break;
 209
 210      case DestroyNotify:
 211         destroyFrame(fPtr);
 212         break;
 213     }
 214 }
 215
 216
 217 WMFrame*
 218 WMCreateFrame(WMWidget *parent)
 219 {
 220     Frame *fPtr;
 221
 222     fPtr = wmalloc(sizeof(Frame));
 223     memset(fPtr, 0, sizeof(Frame));
 224
 225     fPtr->widgetClass = WC_Frame;
 226
 227     fPtr->view = W_CreateView(W_VIEW(parent));
 228     if (!fPtr->view) {
 229         wfree(fPtr);
 230         return NULL;
 231     }
 232     fPtr->view->self = fPtr;
 233
 234     WMCreateEventHandler(fPtr->view, ExposureMask|StructureNotifyMask,
 235                          handleEvents, fPtr);
 236
 237
 238     fPtr->flags.relief = DEFAULT_RELIEF;
 239     fPtr->flags.titlePosition = DEFAULT_TITLE_POSITION;
 240
 241     WMResizeWidget(fPtr, DEFAULT_WIDTH, DEFAULT_HEIGHT);
 242
 243     return fPtr;
 244 }
 245
 246
 247 static void
 248 destroyFrame(Frame *fPtr)
 249 {
 250     if (fPtr->caption)
 251         wfree(fPtr->caption);
 252
 253     wfree(fPtr);
 254 }