wmaker/WPrefs.app/double.c

/*
 * Widget for testing double-clicks
 *
 */

#include <WINGs/WINGsP.h>
#include "WPrefs.h"


typedef struct W_DoubleTest {
	W_Class widgetClass;
	WMView *view;

	WMHandlerID timer;
	char on;
	char active;
	char *text;
} _DoubleTest;

/* some forward declarations */

static void destroyDoubleTest(_DoubleTest * dPtr);
static void paintDoubleTest(_DoubleTest * dPtr);

static void handleEvents(XEvent * event, void *data);
static void handleActionEvents(XEvent * event, void *data);

/* our widget class ID */
static W_Class DoubleTestClass = 0;

/*
 * Initializer for our widget. Must be called before creating any
 * instances of the widget.
 */
W_Class InitDoubleTest(void)
{
	/* register our widget with WINGs and get our widget class ID */
	if (!DoubleTestClass) {
		DoubleTestClass = W_RegisterUserWidget();
	}

	return DoubleTestClass;
}

/*
 * Our widget fabrication plant.
 */
DoubleTest *CreateDoubleTest(WMWidget * parent, const char *text)
{
	DoubleTest *dPtr;

	if (!DoubleTestClass)
		InitDoubleTest();

	/* allocate some storage for our new widget instance */
	dPtr = wmalloc(sizeof(DoubleTest));

	/* set the class ID */
	dPtr->widgetClass = DoubleTestClass;

	dPtr->view = W_CreateView(W_VIEW(parent));
	if (!dPtr->view) {
		wfree(dPtr);
		return NULL;
	}
	/* always do this */
	dPtr->view->self = dPtr;

	dPtr->text = wstrdup(text);

	WMCreateEventHandler(dPtr->view, ExposureMask	/* this allows us to know when we should paint */
			     | StructureNotifyMask,	/* this allows us to know things like when we are destroyed */
			     handleEvents, dPtr);

	WMCreateEventHandler(dPtr->view, ButtonPressMask, handleActionEvents, dPtr);

	return dPtr;
}

static void paintDoubleTest(_DoubleTest * dPtr)
{
	W_Screen *scr = dPtr->view->screen;

	if (dPtr->active) {
		XFillRectangle(scr->display, dPtr->view->window, WMColorGC(scr->white),
			       0, 0, dPtr->view->size.width, dPtr->view->size.height);
	} else {
		XClearWindow(scr->display, dPtr->view->window);
	}

	W_DrawRelief(scr, dPtr->view->window, 0, 0, dPtr->view->size.width,
		     dPtr->view->size.height, dPtr->on ? WRSunken : WRRaised);

	if (dPtr->text) {
		int y;
		y = (dPtr->view->size.height - scr->normalFont->height) / 2;
		W_PaintText(dPtr->view, dPtr->view->window, scr->normalFont,
			    dPtr->on, dPtr->on + y, dPtr->view->size.width, WACenter,
			    scr->black, False, dPtr->text, strlen(dPtr->text));
	}
}

static void handleEvents(XEvent * event, void *data)
{
	_DoubleTest *dPtr = (_DoubleTest *) data;

	switch (event->type) {
	case Expose:
		if (event->xexpose.count != 0)
			break;
		paintDoubleTest(dPtr);
		break;

	case DestroyNotify:
		destroyDoubleTest(dPtr);
		break;

	}
}

static void deactivate(void *data)
{
	_DoubleTest *dPtr = (_DoubleTest *) data;

	if (dPtr->active)
		dPtr->active = 0;
	paintDoubleTest(dPtr);

	dPtr->timer = NULL;
}

static void handleActionEvents(XEvent * event, void *data)
{
	_DoubleTest *dPtr = (_DoubleTest *) data;

	switch (event->type) {
	case ButtonPress:
		if (WMIsDoubleClick(event)) {
			if (dPtr->timer)
				WMDeleteTimerHandler(dPtr->timer);
			dPtr->timer = NULL;
			dPtr->on = !dPtr->on;
			dPtr->active = 0;
			paintDoubleTest(dPtr);
		} else {
			dPtr->timer = WMAddTimerHandler(WINGsConfiguration.doubleClickDelay, deactivate, dPtr);
			dPtr->active = 1;
			paintDoubleTest(dPtr);
		}
		break;
	}
}

static void destroyDoubleTest(_DoubleTest * dPtr)
{
	if (dPtr->timer)
		WMDeleteTimerHandler(dPtr->timer);
	if (dPtr->text)
		wfree(dPtr->text);

	wfree(dPtr);
}