WINGs/wframe.c

   1
   2 #include "WINGsP.h"
   3
   4 typedef struct W_Frame {
   5         W_Class widgetClass;
   6         W_View *view;
   7
   8         char *caption;
   9
  10         struct {
  11                 WMReliefType relief:4;
  12                 WMTitlePosition titlePosition:4;
  13         } flags;
  14 } Frame;
  15
  16 #define DEFAULT_RELIEF  WRGroove
  17 #define DEFAULT_TITLE_POSITION  WTPAtTop
  18 #define DEFAULT_WIDTH           40
  19 #define DEFAULT_HEIGHT          40
  20
  21 static void destroyFrame(Frame * fPtr);
  22 static void paintFrame(Frame * fPtr);
  23 static void repaintFrame(Frame * fPtr);
  24
  25 void WMSetFrameTitlePosition(WMFrame * fPtr, WMTitlePosition position)
  26 {
  27         fPtr->flags.titlePosition = position;
  28
  29         if (fPtr->view->flags.realized) {
  30                 repaintFrame(fPtr);
  31         }
  32 }
  33
  34 void WMSetFrameRelief(WMFrame * fPtr, WMReliefType relief)
  35 {
  36         fPtr->flags.relief = relief;
  37
  38         if (fPtr->view->flags.realized) {
  39                 repaintFrame(fPtr);
  40         }
  41 }
  42
  43 void WMSetFrameTitle(WMFrame * fPtr, char *title)
  44 {
  45         if (fPtr->caption)
  46                 wfree(fPtr->caption);
  47
  48         if (title)
  49                 fPtr->caption = wstrdup(title);
  50         else
  51                 fPtr->caption = NULL;
  52
  53         if (fPtr->view->flags.realized) {
  54                 repaintFrame(fPtr);
  55         }
  56 }
  57
  58 static void repaintFrame(Frame * fPtr)
  59 {
  60         W_View *view = fPtr->view;
  61         W_Screen *scrPtr = view->screen;
  62
  63         XClearWindow(scrPtr->display, view->window);
  64         paintFrame(fPtr);
  65 }
  66
  67 static void paintFrame(Frame * fPtr)
  68 {
  69         W_View *view = fPtr->view;
  70         W_Screen *scrPtr = view->screen;
  71         WMFont *font = scrPtr->normalFont;
  72         Display *display = scrPtr->display;
  73         int tx, ty, tw, th, tlen;
  74         int fy, fh;
  75         Bool drawTitle;
  76
  77         if (fPtr->caption != NULL) {
  78                 th = WMFontHeight(font);
  79                 tlen = strlen(fPtr->caption);
  80         } else {
  81                 th = 0;
  82                 tlen = 0;
  83         }
  84
  85         fh = view->size.height;
  86         fy = 0;
  87
  88         switch (fPtr->flags.titlePosition) {
  89         case WTPAboveTop:
  90                 ty = 0;
  91                 fy = th + 4;
  92                 fh = view->size.height - fy;
  93                 break;
  94
  95         case WTPAtTop:
  96                 ty = 0;
  97                 fy = th / 2;
  98                 fh = view->size.height - fy;
  99                 break;
 100
 101         case WTPBelowTop:
 102                 ty = 4;
 103                 fy = 0;
 104                 fh = view->size.height;
 105                 break;
 106
 107         case WTPAboveBottom:
 108                 ty = view->size.height - th - 4;
 109                 fy = 0;
 110                 fh = view->size.height;
 111                 break;
 112
 113         case WTPAtBottom:
 114                 ty = view->size.height - th;
 115                 fy = 0;
 116                 fh = view->size.height - th / 2;
 117                 break;
 118
 119         case WTPBelowBottom:
 120                 ty = view->size.height - th;
 121                 fy = 0;
 122                 fh = view->size.height - th - 4;
 123                 break;
 124
 125         default:
 126                 ty = 0;
 127                 fy = 0;
 128                 fh = view->size.height;
 129         }
 130
 131         if (tlen > 0 && fPtr->flags.titlePosition != WTPNoTitle) {
 132                 tw = WMWidthOfString(font, fPtr->caption, tlen);
 133
 134                 tx = (view->size.width - tw) / 2;
 135
 136                 drawTitle = True;
 137         } else {
 138                 tw = tx = 0;
 139                 drawTitle = False;
 140         }
 141
 142         {
 143                 XRectangle rect;
 144                 Region region, tmp;
 145                 GC gc[4];
 146                 int i;
 147
 148                 region = XCreateRegion();
 149
 150                 rect.x = 0;
 151                 rect.y = 0;
 152                 rect.width = view->size.width;
 153                 rect.height = view->size.height;
 154                 XUnionRectWithRegion(&rect, region, region);
 155                 if (drawTitle) {
 156                         tmp = XCreateRegion();
 157                         rect.x = tx;
 158                         rect.y = ty;
 159                         rect.width = tw;
 160                         rect.height = th;
 161                         XUnionRectWithRegion(&rect, tmp, tmp);
 162                         XSubtractRegion(region, tmp, region);
 163                         XDestroyRegion(tmp);
 164                 }
 165                 gc[0] = WMColorGC(scrPtr->black);
 166                 gc[1] = WMColorGC(scrPtr->darkGray);
 167                 gc[2] = WMColorGC(scrPtr->gray);
 168                 gc[3] = WMColorGC(scrPtr->white);
 169
 170                 for (i = 0; i < 4; i++) {
 171                         XSetRegion(display, gc[i], region);
 172                 }
 173                 XDestroyRegion(region);
 174
 175                 W_DrawReliefWithGC(scrPtr, view->window, 0, fy, view->size.width, fh,
 176                                    fPtr->flags.relief, gc[0], gc[1], gc[2], gc[3]);
 177
 178                 for (i = 0; i < 4; i++) {
 179                         XSetClipMask(display, gc[i], None);
 180                 }
 181         }
 182
 183         if (drawTitle) {
 184                 /* can't draw AA text over and over again because it gets messed */
 185                 /* // TODO create the dbl buffer pixmap when create/set frame title */
 186                 if (scrPtr->antialiasedText) {
 187                         Drawable d;
 188
 189                         d = XCreatePixmap(display, view->window, tw, th, scrPtr->depth);
 190                         XFillRectangle(display, d, WMColorGC(view->backColor), 0, 0, tw, th);
 191
 192                         WMDrawString(scrPtr, d, scrPtr->black, font, 0, 0, fPtr->caption, tlen);
 193                         XCopyArea(display, d, view->window, scrPtr->copyGC, 0, 0, tw, th, tx, ty);
 194                         XFreePixmap(display, d);
 195                 } else {
 196                         WMDrawString(scrPtr, view->window, scrPtr->black, font, tx, ty, fPtr->caption, tlen);
 197                 }
 198         }
 199 }
 200
 201 static void handleEvents(XEvent * event, void *data)
 202 {
 203         Frame *fPtr = (Frame *) data;
 204
 205         CHECK_CLASS(data, WC_Frame);
 206
 207         switch (event->type) {
 208         case Expose:
 209                 if (event->xexpose.count == 0)
 210                         paintFrame(fPtr);
 211                 break;
 212
 213         case DestroyNotify:
 214                 destroyFrame(fPtr);
 215                 break;
 216         }
 217 }
 218
 219 WMFrame *WMCreateFrame(WMWidget * parent)
 220 {
 221         Frame *fPtr;
 222
 223         fPtr = wmalloc(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, handleEvents, fPtr);
 235
 236         fPtr->flags.relief = DEFAULT_RELIEF;
 237         fPtr->flags.titlePosition = DEFAULT_TITLE_POSITION;
 238
 239         WMResizeWidget(fPtr, DEFAULT_WIDTH, DEFAULT_HEIGHT);
 240
 241         return fPtr;
 242 }
 243
 244 static void destroyFrame(Frame * fPtr)
 245 {
 246         if (fPtr->caption)
 247                 wfree(fPtr->caption);
 248
 249         wfree(fPtr);
 250 }