WPrefs.app/double.c

   1
   2 /*
   3  * Widget for testing double-clicks
   4  *
   5  */
   6
   7 #include <WINGs/WINGsP.h>
   8
   9 #include "double.h"
  10
  11
  12 typedef struct W_DoubleTest {
  13     W_Class widgetClass;
  14     WMView *view;
  15
  16     WMHandlerID timer;
  17     char on;
  18     char active;
  19     char *text;
  20 } _DoubleTest;
  21
  22
  23
  24
  25 /* some forward declarations */
  26
  27 static void destroyDoubleTest(_DoubleTest *dPtr);
  28 static void paintDoubleTest(_DoubleTest *dPtr);
  29
  30
  31 static void handleEvents(XEvent *event, void *data);
  32 static void handleActionEvents(XEvent *event, void *data);
  33
  34
  35
  36 /* our widget class ID */
  37 static W_Class DoubleTestClass = 0;
  38
  39
  40 /*
  41  * Initializer for our widget. Must be called before creating any
  42  * instances of the widget.
  43  */
  44 W_Class
  45 InitDoubleTest(WMScreen *scr)
  46 {
  47     /* register our widget with WINGs and get our widget class ID */
  48     if (!DoubleTestClass) {
  49         DoubleTestClass = W_RegisterUserWidget();
  50     }
  51
  52     return DoubleTestClass;
  53 }
  54
  55
  56 /*
  57  * Our widget fabrication plant.
  58  */
  59 DoubleTest*
  60 CreateDoubleTest(WMWidget *parent, char *text)
  61 {
  62     DoubleTest *dPtr;
  63
  64     if (!DoubleTestClass)
  65         InitDoubleTest(WMWidgetScreen(parent));
  66
  67     /* allocate some storage for our new widget instance */
  68     dPtr = wmalloc(sizeof(DoubleTest));
  69     /* initialize it */
  70     memset(dPtr, 0, sizeof(DoubleTest));
  71
  72     /* set the class ID */
  73     dPtr->widgetClass = DoubleTestClass;
  74
  75     dPtr->view = W_CreateView(W_VIEW(parent));
  76     if (!dPtr->view) {
  77         wfree(dPtr);
  78         return NULL;
  79     }
  80     /* always do this */
  81     dPtr->view->self = dPtr;
  82
  83     dPtr->text = wstrdup(text);
  84
  85     WMCreateEventHandler(dPtr->view, ExposureMask /* this allows us to know when we should paint */
  86                          |StructureNotifyMask, /* this allows us to know things like when we are destroyed */
  87                          handleEvents, dPtr);
  88
  89     WMCreateEventHandler(dPtr->view, ButtonPressMask,handleActionEvents, dPtr);
  90
  91     return dPtr;
  92 }
  93
  94
  95
  96 static void
  97 paintDoubleTest(_DoubleTest *dPtr)
  98 {
  99     W_Screen *scr = dPtr->view->screen;
 100
 101     if (dPtr->active) {
 102         XFillRectangle(scr->display, dPtr->view->window, WMColorGC(scr->white),
 103                        0, 0, dPtr->view->size.width, dPtr->view->size.height);
 104     } else {
 105         XClearWindow(scr->display, dPtr->view->window);
 106     }
 107
 108     W_DrawRelief(scr, dPtr->view->window, 0, 0, dPtr->view->size.width,
 109                  dPtr->view->size.height, dPtr->on ? WRSunken : WRRaised);
 110
 111     if (dPtr->text) {
 112         int y;
 113         y = (dPtr->view->size.height-scr->normalFont->height)/2;
 114         W_PaintText(dPtr->view, dPtr->view->window, scr->normalFont,
 115                     dPtr->on, dPtr->on+y, dPtr->view->size.width, WACenter,
 116                     WMColorGC(scr->black), False, dPtr->text, strlen(dPtr->text));
 117     }
 118 }
 119
 120
 121
 122 static void
 123 handleEvents(XEvent *event, void *data)
 124 {
 125     _DoubleTest *dPtr = (_DoubleTest*)data;
 126
 127
 128     switch (event->type) {
 129      case Expose:
 130         if (event->xexpose.count!=0)
 131             break;
 132         paintDoubleTest(dPtr);
 133         break;
 134
 135      case DestroyNotify:
 136         destroyDoubleTest(dPtr);
 137         break;
 138
 139     }
 140 }
 141
 142
 143 static void
 144 deactivate(void *data)
 145 {
 146    _DoubleTest *dPtr = (_DoubleTest*)data;
 147
 148     if (dPtr->active)
 149         dPtr->active = 0;
 150     paintDoubleTest(dPtr);
 151
 152     dPtr->timer = NULL;
 153 }
 154
 155
 156 static void
 157 handleActionEvents(XEvent *event, void *data)
 158 {
 159     _DoubleTest *dPtr = (_DoubleTest*)data;
 160     extern _WINGsConfiguration WINGsConfiguration;
 161
 162     switch (event->type) {
 163      case ButtonPress:
 164         if (WMIsDoubleClick(event)) {
 165             if (dPtr->timer)
 166                 WMDeleteTimerHandler(dPtr->timer);
 167             dPtr->timer = NULL;
 168             dPtr->on = !dPtr->on;
 169             dPtr->active = 0;
 170             paintDoubleTest(dPtr);
 171         } else {
 172             dPtr->timer=WMAddTimerHandler(WINGsConfiguration.doubleClickDelay,
 173                                           deactivate, dPtr);
 174             dPtr->active = 1;
 175             paintDoubleTest(dPtr);
 176         }
 177         break;
 178     }
 179 }
 180
 181
 182
 183 static void
 184 destroyDoubleTest(_DoubleTest *dPtr)
 185 {
 186     if (dPtr->timer)
 187         WMDeleteTimerHandler(dPtr->timer);
 188     if (dPtr->text)
 189         wfree(dPtr->text);
 190
 191     wfree(dPtr);
 192 }
 193
 194