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         free(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
  76     if (fPtr->caption!=NULL)
  77         th = WMFontHeight(scrPtr->normalFont);
  78     else {
  79         th = 0;
  80     }
  81
  82     fh = view->size.height;
  83     fy = 0;
  84
  85     switch (fPtr->flags.titlePosition) {
  86      case WTPAboveTop:
  87         ty = 0;
  88         fy = th + 4;
  89         fh = view->size.height - fy;
  90         break;
  91
  92      case WTPAtTop:
  93         ty = 0;
  94         fy = th/2;
  95         fh = view->size.height - fy;
  96         break;
  97
  98      case WTPBelowTop:
  99         ty = 4;
 100         fy = 0;
 101         fh = view->size.height;
 102         break;
 103
 104      case WTPAboveBottom:
 105         ty = view->size.height - th - 4;
 106         fy = 0;
 107         fh = view->size.height;
 108         break;
 109
 110      case WTPAtBottom:
 111         ty = view->size.height - th;
 112         fy = 0;
 113         fh = view->size.height - th/2;
 114         break;
 115
 116      case WTPBelowBottom:
 117         ty = view->size.height - th;
 118         fy = 0;
 119         fh = view->size.height - th - 4;
 120         break;
 121
 122      default:
 123         ty = 0;
 124         fy = 0;
 125         fh = view->size.height;
 126     }
 127 /*
 128     XClearArea(scrPtr->display, view->window, fy+2, 2, fh-4, view->size.width-4,
 129                False);
 130  */
 131     XClearWindow(scrPtr->display, view->window);
 132
 133     W_DrawRelief(scrPtr, view->window, 0, fy, view->size.width, fh,
 134                  fPtr->flags.relief);
 135
 136     if (fPtr->caption!=NULL && fPtr->flags.titlePosition!=WTPNoTitle) {
 137
 138
 139         tw = WMWidthOfString(scrPtr->normalFont, fPtr->caption,
 140                          strlen(fPtr->caption));
 141
 142         tx = (view->size.width - tw) / 2;
 143
 144         XFillRectangle(scrPtr->display, view->window, WMColorGC(scrPtr->gray),
 145                        tx, ty, tw, th);
 146
 147         WMDrawString(scrPtr, view->window, WMColorGC(scrPtr->black),
 148                      scrPtr->normalFont, tx, ty, fPtr->caption,
 149                      strlen(fPtr->caption));
 150     }
 151 }
 152
 153
 154
 155
 156
 157 static void
 158 handleEvents(XEvent *event, void *data)
 159 {
 160     Frame *fPtr = (Frame*)data;
 161
 162     CHECK_CLASS(data, WC_Frame);
 163
 164     switch (event->type) {
 165      case Expose:
 166         if (event->xexpose.count!=0)
 167             break;
 168         paintFrame(fPtr);
 169         break;
 170
 171      case DestroyNotify:
 172         destroyFrame(fPtr);
 173         break;
 174     }
 175 }
 176
 177
 178 WMFrame*
 179 WMCreateFrame(WMWidget *parent)
 180 {
 181     Frame *fPtr;
 182
 183     fPtr = wmalloc(sizeof(Frame));
 184     memset(fPtr, 0, sizeof(Frame));
 185
 186     fPtr->widgetClass = WC_Frame;
 187
 188     fPtr->view = W_CreateView(W_VIEW(parent));
 189     if (!fPtr->view) {
 190         free(fPtr);
 191         return NULL;
 192     }
 193     fPtr->view->self = fPtr;
 194
 195     WMCreateEventHandler(fPtr->view, ExposureMask|StructureNotifyMask,
 196                          handleEvents, fPtr);
 197
 198
 199     fPtr->flags.relief = DEFAULT_RELIEF;
 200     fPtr->flags.titlePosition = DEFAULT_TITLE_POSITION;
 201
 202     WMResizeWidget(fPtr, DEFAULT_WIDTH, DEFAULT_HEIGHT);
 203
 204     return fPtr;
 205 }
 206
 207
 208 static void
 209 destroyFrame(Frame *fPtr)
 210 {
 211     if (fPtr->caption)
 212         free(fPtr->caption);
 213
 214     free(fPtr);
 215 }