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Diffstat (limited to 'src/Repeater.c')
| -rw-r--r-- | src/Repeater.c | 274 |
1 files changed, 274 insertions, 0 deletions
diff --git a/src/Repeater.c b/src/Repeater.c new file mode 100644 index 0000000..a530615 --- /dev/null +++ b/src/Repeater.c @@ -0,0 +1,274 @@ +/* + * $Xorg: Repeater.c,v 1.4 2001/02/09 02:03:45 xorgcvs Exp $ + * +Copyright 1990, 1994, 1998 The Open Group + +Permission to use, copy, modify, distribute, and sell this software and its +documentation for any purpose is hereby granted without fee, provided that +the above copyright notice appear in all copies and that both that +copyright notice and this permission notice appear in supporting +documentation. + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN +AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN +CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + +Except as contained in this notice, the name of The Open Group shall not be +used in advertising or otherwise to promote the sale, use or other dealings +in this Software without prior written authorization from The Open Group. + * + * Author: Jim Fulton, MIT X Consortium + * + * This widget is used for press-and-hold style buttons. + */ + +#include <X11/IntrinsicP.h> +#include <X11/StringDefs.h> /* for XtN and XtC defines */ +#include <X11/Xaw/XawInit.h> /* for XawInitializeWidgetSet() */ +#include <X11/Xaw/RepeaterP.h> /* us */ + +static void tic(); /* clock timeout */ + +#define DO_CALLBACK(rw) \ + XtCallCallbackList ((Widget) rw, rw->command.callbacks, (XtPointer)NULL) + + +#define ADD_TIMEOUT(rw,delay) \ + XtAppAddTimeOut (XtWidgetToApplicationContext ((Widget) rw), \ + (unsigned long) delay, tic, (XtPointer) rw) + +#define CLEAR_TIMEOUT(rw) \ + if ((rw)->repeater.timer) { \ + XtRemoveTimeOut ((rw)->repeater.timer); \ + (rw)->repeater.timer = 0; \ + } + + +/* + * Translations to give user interface of press-notify...-release_or_leave + */ +static char defaultTranslations[] = + "<EnterWindow>: highlight() \n\ + <LeaveWindow>: unhighlight() \n\ + <Btn1Down>: set() start() \n\ + <Btn1Up>: stop() unset() "; + + +/* + * Actions added by this widget + */ +static void ActionStart(), ActionStop(); + +static XtActionsRec actions[] = { + { "start", ActionStart }, /* trigger timers */ + { "stop", ActionStop }, /* clear timers */ +}; + + +/* + * New resources added by this widget + */ +static XtResource resources[] = { +#define off(field) XtOffsetOf(RepeaterRec, repeater.field) + { XtNdecay, XtCDecay, XtRInt, sizeof (int), + off(decay), XtRImmediate, (XtPointer) REP_DEF_DECAY }, + { XtNinitialDelay, XtCDelay, XtRInt, sizeof (int), + off(initial_delay), XtRImmediate, (XtPointer) REP_DEF_INITIAL_DELAY }, + { XtNminimumDelay, XtCMinimumDelay, XtRInt, sizeof (int), + off(minimum_delay), XtRImmediate, (XtPointer) REP_DEF_MINIMUM_DELAY }, + { XtNrepeatDelay, XtCDelay, XtRInt, sizeof (int), + off(repeat_delay), XtRImmediate, (XtPointer) REP_DEF_REPEAT_DELAY }, + { XtNflash, XtCBoolean, XtRBoolean, sizeof (Boolean), + off(flash), XtRImmediate, (XtPointer) FALSE }, + { XtNstartCallback, XtCStartCallback, XtRCallback, sizeof (XtPointer), + off(start_callbacks), XtRImmediate, (XtPointer) NULL }, + { XtNstopCallback, XtCStopCallback, XtRCallback, sizeof (XtPointer), + off(stop_callbacks), XtRImmediate, (XtPointer) NULL }, +#undef off +}; + + +/* + * Class Methods + */ + +static void Initialize(); /* setup private data */ +static void Destroy(); /* clear timers */ +static Boolean SetValues(); /* set resources */ + +RepeaterClassRec repeaterClassRec = { + { /* core fields */ + /* superclass */ (WidgetClass) &commandClassRec, + /* class_name */ "Repeater", + /* widget_size */ sizeof(RepeaterRec), + /* class_initialize */ XawInitializeWidgetSet, + /* class_part_initialize */ NULL, + /* class_inited */ FALSE, + /* initialize */ Initialize, + /* initialize_hook */ NULL, + /* realize */ XtInheritRealize, + /* actions */ actions, + /* num_actions */ XtNumber(actions), + /* resources */ resources, + /* num_resources */ XtNumber(resources), + /* xrm_class */ NULLQUARK, + /* compress_motion */ TRUE, + /* compress_exposure */ TRUE, + /* compress_enterleave */ TRUE, + /* visible_interest */ FALSE, + /* destroy */ Destroy, + /* resize */ XtInheritResize, + /* expose */ XtInheritExpose, + /* set_values */ SetValues, + /* set_values_hook */ NULL, + /* set_values_almost */ XtInheritSetValuesAlmost, + /* get_values_hook */ NULL, + /* accept_focus */ NULL, + /* version */ XtVersion, + /* callback_private */ NULL, + /* tm_table */ defaultTranslations, + /* query_geometry */ XtInheritQueryGeometry, + /* display_accelerator */ XtInheritDisplayAccelerator, + /* extension */ NULL + }, + { /* simple fields */ + /* change_sensitive */ XtInheritChangeSensitive + }, + { /* label fields */ + /* ignore */ 0 + }, + { /* command fields */ + /* ignore */ 0 + }, + { /* repeater fields */ + /* ignore */ 0 + } +}; + +WidgetClass repeaterWidgetClass = (WidgetClass) &repeaterClassRec; + + +/***************************************************************************** + * * + * repeater utility routines * + * * + *****************************************************************************/ + +/* ARGSUSED */ +static void tic (client_data, id) + XtPointer client_data; + XtIntervalId *id; +{ + RepeaterWidget rw = (RepeaterWidget) client_data; + + rw->repeater.timer = 0; /* timer is removed */ + if (rw->repeater.flash) { + XtExposeProc expose; + expose = repeaterWidgetClass->core_class.superclass->core_class.expose; + XClearWindow (XtDisplay((Widget) rw), XtWindow((Widget) rw)); + rw->command.set = FALSE; + (*expose) ((Widget) rw, (XEvent *) NULL, (Region) NULL); + XClearWindow (XtDisplay((Widget) rw), XtWindow((Widget) rw)); + rw->command.set = TRUE; + (*expose) ((Widget) rw, (XEvent *) NULL, (Region) NULL); + } + DO_CALLBACK (rw); + + rw->repeater.timer = ADD_TIMEOUT (rw, rw->repeater.next_delay); + + /* decrement delay time, but clamp */ + if (rw->repeater.decay) { + rw->repeater.next_delay -= rw->repeater.decay; + if (rw->repeater.next_delay < rw->repeater.minimum_delay) + rw->repeater.next_delay = rw->repeater.minimum_delay; + } +} + + +/***************************************************************************** + * * + * repeater class methods * + * * + *****************************************************************************/ + +/* ARGSUSED */ +static void Initialize (greq, gnew, args, num_args) + Widget greq, gnew; + ArgList args; + Cardinal *num_args; +{ + RepeaterWidget new = (RepeaterWidget) gnew; + + if (new->repeater.minimum_delay < 0) new->repeater.minimum_delay = 0; + new->repeater.timer = (XtIntervalId) 0; +} + +static void Destroy (gw) + Widget gw; +{ + CLEAR_TIMEOUT ((RepeaterWidget) gw); +} + +/* ARGSUSED */ +static Boolean SetValues (gcur, greq, gnew, args, num_args) + Widget gcur, greq, gnew; + ArgList args; + Cardinal *num_args; +{ + RepeaterWidget cur = (RepeaterWidget) gcur; + RepeaterWidget new = (RepeaterWidget) gnew; + Boolean redisplay = FALSE; + + if (cur->repeater.minimum_delay != new->repeater.minimum_delay) { + if (new->repeater.next_delay < new->repeater.minimum_delay) + new->repeater.next_delay = new->repeater.minimum_delay; + } + + return redisplay; +} + +/***************************************************************************** + * * + * repeater action procs * + * * + *****************************************************************************/ + +/* ARGSUSED */ +static void ActionStart (gw, event, params, num_params) + Widget gw; + XEvent *event; + String *params; /* unused */ + Cardinal *num_params; /* unused */ +{ + RepeaterWidget rw = (RepeaterWidget) gw; + + CLEAR_TIMEOUT (rw); + if (rw->repeater.start_callbacks) + XtCallCallbackList (gw, rw->repeater.start_callbacks, (XtPointer)NULL); + + DO_CALLBACK (rw); + rw->repeater.timer = ADD_TIMEOUT (rw, rw->repeater.initial_delay); + rw->repeater.next_delay = rw->repeater.repeat_delay; +} + + +/* ARGSUSED */ +static void ActionStop (gw, event, params, num_params) + Widget gw; + XEvent *event; + String *params; /* unused */ + Cardinal *num_params; /* unused */ +{ + RepeaterWidget rw = (RepeaterWidget) gw; + + CLEAR_TIMEOUT ((RepeaterWidget) gw); + if (rw->repeater.stop_callbacks) + XtCallCallbackList (gw, rw->repeater.stop_callbacks, (XtPointer)NULL); +} + |