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         WMColor *textColor;
  10
  11         struct {
  12                 WMReliefType relief:4;
  13                 WMTitlePosition titlePosition:4;
  14         } flags;
  15 } Frame;
  16
  17 #define DEFAULT_RELIEF  WRGroove
  18 #define DEFAULT_TITLE_POSITION  WTPAtTop
  19 #define DEFAULT_WIDTH           40
  20 #define DEFAULT_HEIGHT          40
  21
  22 static void destroyFrame(Frame * fPtr);
  23 static void paintFrame(Frame * fPtr);
  24 static void repaintFrame(Frame * fPtr);
  25
  26 void WMSetFrameTitlePosition(WMFrame * fPtr, WMTitlePosition position)
  27 {
  28         fPtr->flags.titlePosition = position;
  29
  30         if (fPtr->view->flags.realized) {
  31                 repaintFrame(fPtr);
  32         }
  33 }
  34
  35 void WMSetFrameRelief(WMFrame * fPtr, WMReliefType relief)
  36 {
  37         fPtr->flags.relief = relief;
  38
  39         if (fPtr->view->flags.realized) {
  40                 repaintFrame(fPtr);
  41         }
  42 }
  43
  44 void WMSetFrameTitle(WMFrame * fPtr, const char *title)
  45 {
  46         if (fPtr->caption)
  47                 wfree(fPtr->caption);
  48
  49         if (title)
  50                 fPtr->caption = wstrdup(title);
  51         else
  52                 fPtr->caption = NULL;
  53
  54         if (fPtr->view->flags.realized) {
  55                 repaintFrame(fPtr);
  56         }
  57 }
  58
  59 static void repaintFrame(Frame * fPtr)
  60 {
  61         W_View *view = fPtr->view;
  62         W_Screen *scrPtr = view->screen;
  63
  64         XClearWindow(scrPtr->display, view->window);
  65         paintFrame(fPtr);
  66 }
  67
  68 static void paintFrame(Frame * fPtr)
  69 {
  70         W_View *view = fPtr->view;
  71         W_Screen *scrPtr = view->screen;
  72         WMFont *font = scrPtr->normalFont;
  73         Display *display = scrPtr->display;
  74         int tx, ty, tw, th, tlen;
  75         int fy, fh;
  76         Bool drawTitle;
  77
  78         if (fPtr->caption != NULL) {
  79                 th = WMFontHeight(font);
  80                 tlen = strlen(fPtr->caption);
  81         } else {
  82                 th = 0;
  83                 tlen = 0;
  84         }
  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 (tlen > 0 && fPtr->flags.titlePosition != WTPNoTitle) {
 130                 tw = WMWidthOfString(font, fPtr->caption, tlen);
 131
 132                 tx = (view->size.width - tw) / 2;
 133
 134                 drawTitle = True;
 135         } else {
 136                 tw = tx = 0;
 137                 drawTitle = False;
 138         }
 139
 140         {
 141                 XRectangle rect;
 142                 Region region, tmp;
 143                 GC gc[4];
 144                 int i;
 145
 146                 region = XCreateRegion();
 147
 148                 rect.x = 0;
 149                 rect.y = 0;
 150                 rect.width = view->size.width;
 151                 rect.height = view->size.height;
 152                 XUnionRectWithRegion(&rect, region, region);
 153                 if (drawTitle) {
 154                         tmp = XCreateRegion();
 155                         rect.x = tx;
 156                         rect.y = ty;
 157                         rect.width = tw;
 158                         rect.height = th;
 159                         XUnionRectWithRegion(&rect, tmp, tmp);
 160                         XSubtractRegion(region, tmp, region);
 161                         XDestroyRegion(tmp);
 162                 }
 163                 gc[0] = WMColorGC(scrPtr->black);
 164                 gc[1] = WMColorGC(scrPtr->darkGray);
 165                 gc[2] = WMColorGC(scrPtr->gray);
 166                 gc[3] = WMColorGC(scrPtr->white);
 167
 168                 for (i = 0; i < 4; i++) {
 169                         XSetRegion(display, gc[i], region);
 170                 }
 171                 XDestroyRegion(region);
 172
 173                 W_DrawReliefWithGC(scrPtr, view->window, 0, fy, view->size.width, fh,
 174                                    fPtr->flags.relief, gc[0], gc[1], gc[2], gc[3]);
 175
 176                 for (i = 0; i < 4; i++) {
 177                         XSetClipMask(display, gc[i], None);
 178                 }
 179         }
 180
 181         if (drawTitle) {
 182                 /* can't draw AA text over and over again because it gets messed */
 183                 /* // TODO create the dbl buffer pixmap when create/set frame title */
 184                 if (scrPtr->antialiasedText) {
 185                         Drawable d;
 186
 187                         d = XCreatePixmap(display, view->window, tw, th, scrPtr->depth);
 188                         XFillRectangle(display, d, WMColorGC(view->backColor), 0, 0, tw, th);
 189
 190                         WMDrawString(scrPtr, d, fPtr->textColor ? fPtr->textColor : scrPtr->black, font, 0, 0, fPtr->caption, tlen);
 191                         XCopyArea(display, d, view->window, scrPtr->copyGC, 0, 0, tw, th, tx, ty);
 192                         XFreePixmap(display, d);
 193                 } else {
 194                         WMDrawString(scrPtr, view->window, scrPtr->black, font, tx, ty, fPtr->caption, tlen);
 195                 }
 196         }
 197 }
 198
 199 static void handleEvents(XEvent * event, void *data)
 200 {
 201         Frame *fPtr = (Frame *) data;
 202
 203         CHECK_CLASS(data, WC_Frame);
 204
 205         switch (event->type) {
 206         case Expose:
 207                 if (event->xexpose.count == 0)
 208                         paintFrame(fPtr);
 209                 break;
 210
 211         case DestroyNotify:
 212                 destroyFrame(fPtr);
 213                 break;
 214         }
 215 }
 216
 217 void WMSetFrameTitleColor(WMFrame *fPtr, WMColor *color)
 218 {
 219         if (fPtr->textColor)
 220                 WMReleaseColor(fPtr->textColor);
 221         fPtr->textColor = WMRetainColor(color);
 222
 223         if (fPtr->view->flags.realized) {
 224                 repaintFrame(fPtr);
 225         }
 226 }
 227
 228 WMFrame *WMCreateFrame(WMWidget * parent)
 229 {
 230         Frame *fPtr;
 231
 232         fPtr = wmalloc(sizeof(Frame));
 233
 234         fPtr->widgetClass = WC_Frame;
 235
 236         fPtr->view = W_CreateView(W_VIEW(parent));
 237         if (!fPtr->view) {
 238                 wfree(fPtr);
 239                 return NULL;
 240         }
 241         fPtr->view->self = fPtr;
 242         fPtr->textColor = WMRetainColor(fPtr->view->screen->black);
 243
 244         WMCreateEventHandler(fPtr->view, ExposureMask | StructureNotifyMask, handleEvents, fPtr);
 245
 246         fPtr->flags.relief = DEFAULT_RELIEF;
 247         fPtr->flags.titlePosition = DEFAULT_TITLE_POSITION;
 248
 249         WMResizeWidget(fPtr, DEFAULT_WIDTH, DEFAULT_HEIGHT);
 250
 251         return fPtr;
 252 }
 253
 254 static void destroyFrame(Frame * fPtr)
 255 {
 256         if (fPtr->textColor)
 257                 WMReleaseColor(fPtr->textColor);
 258
 259         if (fPtr->caption)
 260                 wfree(fPtr->caption);
 261
 262         wfree(fPtr);
 263 }