mirror of
https://github.com/gryf/wmaker.git
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79a95d7173
To preserve the accuracy of the operation, the C standard request that the mathematical operation is performed using double precision, but in many case this is not necessary so this patch fixes a few constants to avoid that conversion. Signed-off-by: Christophe CURIS <christophe.curis@free.fr>
845 lines
21 KiB
C
845 lines
21 KiB
C
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/*
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* Until FreeBSD gets their act together;
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* http://www.mail-archive.com/freebsd-hackers@freebsd.org/msg69469.html
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*/
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#if defined( FREEBSD )
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# undef _XOPEN_SOURCE
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#endif
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#include "WINGsP.h"
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#include <math.h>
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/* undefine will disable the autoadjusting of the knob dimple to be
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* directly below the cursor
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* DOES NOT WORK */
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#undef STRICT_NEXT_BEHAVIOUR
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#define AUTOSCROLL_INITIAL_DELAY 200
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#define AUTOSCROLL_DELAY 40
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char *WMScrollerDidScrollNotification = "WMScrollerDidScrollNotification";
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typedef struct W_Scroller {
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W_Class widgetClass;
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W_View *view;
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void *clientData;
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WMAction *action;
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float knobProportion;
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float floatValue;
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WMHandlerID timerID; /* for continuous scrolling mode */
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#ifndef STRICT_NEXT_BEHAVIOUR
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int dragPoint; /* point where the knob is being
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* dragged */
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#endif
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struct {
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WMScrollArrowPosition arrowsPosition:4;
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unsigned int horizontal:1;
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WMScrollerPart hitPart:4;
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/* */
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unsigned int documentFullyVisible:1; /* document is fully visible */
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unsigned int prevSelected:1;
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unsigned int pushed:1;
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unsigned int incrDown:1; /* whether increment button is down */
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unsigned int decrDown:1;
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unsigned int draggingKnob:1;
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unsigned int configured:1;
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unsigned int redrawPending:1;
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} flags;
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} Scroller;
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#define DEFAULT_ARROWS_POSITION WSAMinEnd
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#define BUTTON_SIZE ((SCROLLER_WIDTH) - 4)
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static void destroyScroller(Scroller * sPtr);
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static void paintScroller(Scroller * sPtr);
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static void willResizeScroller(W_ViewDelegate * self, WMView * view, unsigned int *width, unsigned int *height);
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static void handleEvents(XEvent * event, void *data);
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static void handleActionEvents(XEvent * event, void *data);
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static void handleMotion(Scroller * sPtr, int mouseX, int mouseY);
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W_ViewDelegate _ScrollerViewDelegate = {
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NULL,
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NULL,
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NULL,
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NULL,
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willResizeScroller
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};
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WMScroller *WMCreateScroller(WMWidget * parent)
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{
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Scroller *sPtr;
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sPtr = wmalloc(sizeof(Scroller));
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sPtr->widgetClass = WC_Scroller;
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sPtr->view = W_CreateView(W_VIEW(parent));
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if (!sPtr->view) {
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wfree(sPtr);
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return NULL;
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}
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sPtr->view->self = sPtr;
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sPtr->view->delegate = &_ScrollerViewDelegate;
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sPtr->flags.documentFullyVisible = 1;
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WMCreateEventHandler(sPtr->view, ExposureMask | StructureNotifyMask
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| ClientMessageMask, handleEvents, sPtr);
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W_ResizeView(sPtr->view, SCROLLER_WIDTH, SCROLLER_WIDTH);
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sPtr->flags.arrowsPosition = DEFAULT_ARROWS_POSITION;
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WMCreateEventHandler(sPtr->view, ButtonPressMask | ButtonReleaseMask
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| EnterWindowMask | LeaveWindowMask | ButtonMotionMask, handleActionEvents, sPtr);
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sPtr->flags.hitPart = WSNoPart;
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sPtr->floatValue = 0.0;
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sPtr->knobProportion = 1.0;
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return sPtr;
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}
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void WMSetScrollerArrowsPosition(WMScroller * sPtr, WMScrollArrowPosition position)
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{
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sPtr->flags.arrowsPosition = position;
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if (sPtr->view->flags.realized) {
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paintScroller(sPtr);
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}
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}
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static void willResizeScroller(W_ViewDelegate * self, WMView * view, unsigned int *width, unsigned int *height)
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{
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WMScroller *sPtr = (WMScroller *) view->self;
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/* Parameter not used, but tell the compiler that it is ok */
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(void) self;
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if (*width > *height) {
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sPtr->flags.horizontal = 1;
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*height = SCROLLER_WIDTH;
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} else {
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sPtr->flags.horizontal = 0;
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*width = SCROLLER_WIDTH;
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}
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}
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void WMSetScrollerAction(WMScroller * sPtr, WMAction * action, void *clientData)
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{
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CHECK_CLASS(sPtr, WC_Scroller);
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sPtr->action = action;
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sPtr->clientData = clientData;
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}
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void WMSetScrollerParameters(WMScroller * sPtr, float floatValue, float knobProportion)
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{
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/*
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* This value represents 1 pixel on a 4k wide screen, it makes
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* a good minimum; this ensure a non-null value to avoid
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* potential division-by-0.
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* Please note that there is another size check when drawing
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* the knob to make sure it will remain selectable.
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*/
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static const float min_knob_proportion = 1.0 / 4096.0;
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CHECK_CLASS(sPtr, WC_Scroller);
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assert(!isnan(floatValue));
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if (floatValue < 0.0F)
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sPtr->floatValue = 0.0F;
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else if (floatValue > 1.0F)
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sPtr->floatValue = 1.0F;
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else
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sPtr->floatValue = floatValue;
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if (knobProportion <= min_knob_proportion) {
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sPtr->knobProportion = min_knob_proportion;
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sPtr->flags.documentFullyVisible = 0;
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} else if (knobProportion >= 1.0F) {
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sPtr->knobProportion = 1.0F;
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sPtr->flags.documentFullyVisible = 1;
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} else {
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sPtr->knobProportion = knobProportion;
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sPtr->flags.documentFullyVisible = 0;
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}
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if (sPtr->view->flags.realized)
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paintScroller(sPtr);
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/* WMPostNotificationName(WMScrollerDidScrollNotification, sPtr, NULL); */
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}
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float WMGetScrollerKnobProportion(WMScroller * sPtr)
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{
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CHECK_CLASS(sPtr, WC_Scroller);
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return sPtr->knobProportion;
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}
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float WMGetScrollerValue(WMScroller * sPtr)
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{
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CHECK_CLASS(sPtr, WC_Scroller);
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return sPtr->floatValue;
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}
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WMScrollerPart WMGetScrollerHitPart(WMScroller * sPtr)
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{
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CHECK_CLASS(sPtr, WC_Scroller);
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return sPtr->flags.hitPart;
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}
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static void paintArrow(WMScroller * sPtr, Drawable d, int part)
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/*
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* part- 0 paints the decrement arrow, 1 the increment arrow
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*/
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{
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WMView *view = sPtr->view;
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WMScreen *scr = view->screen;
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int ofs;
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W_Pixmap *arrow;
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#ifndef DOUBLE_BUFFER
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GC gc = scr->lightGC;
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#endif
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if (part == 0) { /* decrement button */
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if (sPtr->flags.horizontal) {
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if (sPtr->flags.arrowsPosition == WSAMaxEnd) {
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ofs = view->size.width - 2 * (BUTTON_SIZE + 1) - 1;
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} else {
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ofs = 2;
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}
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if (sPtr->flags.decrDown)
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arrow = scr->hiLeftArrow;
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else
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arrow = scr->leftArrow;
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} else {
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if (sPtr->flags.arrowsPosition == WSAMaxEnd) {
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ofs = view->size.height - 2 * (BUTTON_SIZE + 1) - 1;
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} else {
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ofs = 2;
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}
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if (sPtr->flags.decrDown)
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arrow = scr->hiUpArrow;
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else
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arrow = scr->upArrow;
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}
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#ifndef DOUBLE_BUFFER
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if (sPtr->flags.decrDown)
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gc = WMColorGC(scr->white);
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#endif
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} else { /* increment button */
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if (sPtr->flags.horizontal) {
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if (sPtr->flags.arrowsPosition == WSAMaxEnd) {
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ofs = view->size.width - BUTTON_SIZE + 1 - 3;
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} else {
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ofs = 2 + BUTTON_SIZE + 1;
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}
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if (sPtr->flags.incrDown)
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arrow = scr->hiRightArrow;
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else
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arrow = scr->rightArrow;
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} else {
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if (sPtr->flags.arrowsPosition == WSAMaxEnd) {
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ofs = view->size.height - BUTTON_SIZE + 1 - 3;
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} else {
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ofs = 2 + BUTTON_SIZE + 1;
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}
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if (sPtr->flags.incrDown)
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arrow = scr->hiDownArrow;
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else
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arrow = scr->downArrow;
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}
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#ifndef DOUBLE_BUFFER
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if (sPtr->flags.incrDown)
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gc = scr->whiteGC;
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#endif
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}
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if (sPtr->flags.horizontal) {
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/* paint button */
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#ifndef DOUBLE_BUFFER
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XFillRectangle(scr->display, d, gc, ofs + 1, 2 + 1, BUTTON_SIZE + 1 - 3, BUTTON_SIZE - 3);
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#else
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if ((!part && sPtr->flags.decrDown) || (part && sPtr->flags.incrDown))
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XFillRectangle(scr->display, d, WMColorGC(scr->white),
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ofs + 1, 2 + 1, BUTTON_SIZE + 1 - 3, BUTTON_SIZE - 3);
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#endif /* DOUBLE_BUFFER */
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W_DrawRelief(scr, d, ofs, 2, BUTTON_SIZE, BUTTON_SIZE, WRRaised);
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/* paint arrow */
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XSetClipMask(scr->display, scr->clipGC, arrow->mask);
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XSetClipOrigin(scr->display, scr->clipGC,
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ofs + (BUTTON_SIZE - arrow->width) / 2, 2 + (BUTTON_SIZE - arrow->height) / 2);
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XCopyArea(scr->display, arrow->pixmap, d, scr->clipGC,
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0, 0, arrow->width, arrow->height,
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ofs + (BUTTON_SIZE - arrow->width) / 2, 2 + (BUTTON_SIZE - arrow->height) / 2);
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} else { /* vertical */
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/* paint button */
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#ifndef DOUBLE_BUFFER
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XFillRectangle(scr->display, d, gc, 2 + 1, ofs + 1, BUTTON_SIZE - 3, BUTTON_SIZE + 1 - 3);
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#else
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if ((!part && sPtr->flags.decrDown) || (part && sPtr->flags.incrDown))
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XFillRectangle(scr->display, d, WMColorGC(scr->white),
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2 + 1, ofs + 1, BUTTON_SIZE - 3, BUTTON_SIZE + 1 - 3);
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#endif /* DOUBLE_BUFFER */
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W_DrawRelief(scr, d, 2, ofs, BUTTON_SIZE, BUTTON_SIZE, WRRaised);
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/* paint arrow */
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XSetClipMask(scr->display, scr->clipGC, arrow->mask);
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XSetClipOrigin(scr->display, scr->clipGC,
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2 + (BUTTON_SIZE - arrow->width) / 2, ofs + (BUTTON_SIZE - arrow->height) / 2);
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XCopyArea(scr->display, arrow->pixmap, d, scr->clipGC,
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0, 0, arrow->width, arrow->height,
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2 + (BUTTON_SIZE - arrow->width) / 2, ofs + (BUTTON_SIZE - arrow->height) / 2);
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}
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}
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static int knobLength(Scroller * sPtr)
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{
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int tmp, length;
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if (sPtr->flags.horizontal)
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length = sPtr->view->size.width - 4;
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else
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length = sPtr->view->size.height - 4;
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if (sPtr->flags.arrowsPosition != WSANone) {
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length -= 2 * (BUTTON_SIZE + 1);
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}
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tmp = (int)((float)length * sPtr->knobProportion + 0.5F);
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/* keep minimum size */
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if (tmp < BUTTON_SIZE)
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tmp = BUTTON_SIZE;
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return tmp;
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}
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static void paintScroller(Scroller * sPtr)
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{
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WMView *view = sPtr->view;
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WMScreen *scr = view->screen;
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#ifdef DOUBLE_BUFFER
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Pixmap d;
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#else
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Drawable d = view->window;
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#endif
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int length, ofs;
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float knobP, knobL;
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#ifdef DOUBLE_BUFFER
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d = XCreatePixmap(scr->display, view->window, view->size.width, view->size.height, scr->depth);
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XFillRectangle(scr->display, d, WMColorGC(scr->gray), 0, 0, view->size.width, view->size.height);
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#endif
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XDrawRectangle(scr->display, d, WMColorGC(scr->black), 0, 0, view->size.width - 1, view->size.height - 1);
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#ifndef DOUBLE_BUFFER
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XDrawRectangle(scr->display, d, WMColorGC(scr->gray), 1, 1, view->size.width - 3, view->size.height - 3);
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#endif
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if (sPtr->flags.horizontal)
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length = view->size.width - 4;
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else
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length = view->size.height - 4;
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if (sPtr->flags.documentFullyVisible) {
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XFillRectangle(scr->display, d, scr->stippleGC, 2, 2, view->size.width - 4, view->size.height - 4);
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} else {
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ofs = 2;
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if (sPtr->flags.arrowsPosition == WSAMaxEnd) {
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length -= (BUTTON_SIZE + 1) * 2;
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} else if (sPtr->flags.arrowsPosition == WSAMinEnd) {
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ofs += (BUTTON_SIZE + 1) * 2;
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length -= (BUTTON_SIZE + 1) * 2;
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}
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knobL = (float)knobLength(sPtr);
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knobP = sPtr->floatValue * ((float)length - knobL);
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if (sPtr->flags.horizontal) {
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/* before */
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XFillRectangle(scr->display, d, scr->stippleGC, ofs, 2, (int)knobP, view->size.height - 4);
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/* knob */
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#ifndef DOUBLE_BUFFER
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XFillRectangle(scr->display, d, scr->lightGC,
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ofs + (int)knobP + 2, 2 + 2, (int)knobL - 4, view->size.height - 4 - 4);
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#endif
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W_DrawRelief(scr, d, ofs + (int)knobP, 2, (int)knobL, view->size.height - 4, WRRaised);
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XCopyArea(scr->display, scr->scrollerDimple->pixmap, d,
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scr->copyGC, 0, 0,
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scr->scrollerDimple->width, scr->scrollerDimple->height,
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ofs + (int)knobP + ((int)knobL - scr->scrollerDimple->width - 1) / 2,
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(view->size.height - scr->scrollerDimple->height - 1) / 2);
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/* after */
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if ((int)(knobP + knobL) < length)
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XFillRectangle(scr->display, d, scr->stippleGC,
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ofs + (int)(knobP + knobL), 2,
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length - (int)(knobP + knobL), view->size.height - 4);
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} else {
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/* before */
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if (knobP > 0.0F)
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XFillRectangle(scr->display, d, scr->stippleGC,
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2, ofs, view->size.width - 4, (int)knobP);
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/* knob */
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#ifndef DOUBLE_BUFFER
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XFillRectangle(scr->display, d, scr->lightGC,
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2 + 2, ofs + (int)knobP + 2, view->size.width - 4 - 4, (int)knobL - 4);
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#endif
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XCopyArea(scr->display, scr->scrollerDimple->pixmap, d,
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scr->copyGC, 0, 0,
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scr->scrollerDimple->width, scr->scrollerDimple->height,
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(view->size.width - scr->scrollerDimple->width - 1) / 2,
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ofs + (int)knobP + ((int)knobL - scr->scrollerDimple->height - 1) / 2);
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W_DrawRelief(scr, d, 2, ofs + (int)knobP, view->size.width - 4, (int)knobL, WRRaised);
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/* after */
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if ((int)(knobP + knobL) < length)
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XFillRectangle(scr->display, d, scr->stippleGC,
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2, ofs + (int)(knobP + knobL),
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view->size.width - 4, length - (int)(knobP + knobL));
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}
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if (sPtr->flags.arrowsPosition != WSANone) {
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paintArrow(sPtr, d, 0);
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paintArrow(sPtr, d, 1);
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}
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}
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#ifdef DOUBLE_BUFFER
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XCopyArea(scr->display, d, view->window, scr->copyGC, 0, 0, view->size.width, view->size.height, 0, 0);
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XFreePixmap(scr->display, d);
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#endif
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}
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static void handleEvents(XEvent * event, void *data)
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{
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Scroller *sPtr = (Scroller *) data;
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CHECK_CLASS(data, WC_Scroller);
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switch (event->type) {
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case Expose:
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if (event->xexpose.count == 0)
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paintScroller(sPtr);
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break;
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case DestroyNotify:
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destroyScroller(sPtr);
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break;
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}
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}
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/*
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* locatePointInScroller-
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* Return the part of the scroller where the point is located.
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*/
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static WMScrollerPart locatePointInScroller(Scroller * sPtr, int x, int y, int alternate)
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{
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int width = sPtr->view->size.width;
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int height = sPtr->view->size.height;
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int c, p1, p2, p3, p4, p5, p6;
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int knobL, slotL;
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/* if there is no knob... */
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if (sPtr->flags.documentFullyVisible)
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return WSKnobSlot;
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if (sPtr->flags.horizontal)
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c = x;
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else
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c = y;
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/* p1 p2 p3 p4 p5 p6
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* | | |###########| |#####| | |
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* | < | > |###########| O |#####| < | > |
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* | | |###########| |#####| | |
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*/
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if (sPtr->flags.arrowsPosition == WSAMinEnd) {
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p1 = 18;
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p2 = 36;
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if (sPtr->flags.horizontal) {
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slotL = width - 36;
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p5 = width;
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} else {
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slotL = height - 36;
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p5 = height;
|
|
}
|
|
p6 = p5;
|
|
} else if (sPtr->flags.arrowsPosition == WSAMaxEnd) {
|
|
if (sPtr->flags.horizontal) {
|
|
slotL = width - 36;
|
|
p6 = width - 18;
|
|
} else {
|
|
slotL = height - 36;
|
|
p6 = height - 18;
|
|
}
|
|
p5 = p6 - 18;
|
|
|
|
p1 = p2 = 0;
|
|
} else {
|
|
/* no arrows */
|
|
p1 = p2 = 0;
|
|
|
|
if (sPtr->flags.horizontal) {
|
|
slotL = p5 = p6 = width;
|
|
} else {
|
|
slotL = p5 = p6 = height;
|
|
}
|
|
}
|
|
|
|
knobL = knobLength(sPtr);
|
|
p3 = p2 + (int)((float)(slotL - knobL) * sPtr->floatValue);
|
|
p4 = p3 + knobL;
|
|
|
|
/* uses a mix of the NS and Win ways of doing scroll page */
|
|
if (c <= p1)
|
|
return alternate ? WSDecrementPage : WSDecrementLine;
|
|
else if (c <= p2)
|
|
return alternate ? WSIncrementPage : WSIncrementLine;
|
|
else if (c <= p3)
|
|
return WSDecrementPage;
|
|
else if (c <= p4)
|
|
return WSKnob;
|
|
else if (c <= p5)
|
|
return WSIncrementPage;
|
|
else if (c <= p6)
|
|
return alternate ? WSDecrementPage : WSDecrementLine;
|
|
else
|
|
return alternate ? WSIncrementPage : WSIncrementLine;
|
|
}
|
|
|
|
static void handlePush(Scroller * sPtr, int pushX, int pushY, int alternate)
|
|
{
|
|
WMScrollerPart part;
|
|
int doAction = 0;
|
|
|
|
part = locatePointInScroller(sPtr, pushX, pushY, alternate);
|
|
|
|
sPtr->flags.hitPart = part;
|
|
|
|
switch (part) {
|
|
case WSIncrementLine:
|
|
sPtr->flags.incrDown = 1;
|
|
doAction = 1;
|
|
break;
|
|
|
|
case WSIncrementPage:
|
|
doAction = 1;
|
|
break;
|
|
|
|
case WSDecrementLine:
|
|
sPtr->flags.decrDown = 1;
|
|
doAction = 1;
|
|
break;
|
|
|
|
case WSDecrementPage:
|
|
doAction = 1;
|
|
break;
|
|
|
|
case WSKnob:
|
|
sPtr->flags.draggingKnob = 1;
|
|
#ifndef STRICT_NEXT_BEHAVIOUR
|
|
if (sPtr->flags.horizontal)
|
|
sPtr->dragPoint = pushX;
|
|
else
|
|
sPtr->dragPoint = pushY;
|
|
|
|
{
|
|
int length, knobP;
|
|
int buttonsLen;
|
|
|
|
if (sPtr->flags.arrowsPosition != WSANone)
|
|
buttonsLen = 2 * (BUTTON_SIZE + 1);
|
|
else
|
|
buttonsLen = 0;
|
|
|
|
if (sPtr->flags.horizontal)
|
|
length = sPtr->view->size.width - 4 - buttonsLen;
|
|
else
|
|
length = sPtr->view->size.height - 4 - buttonsLen;
|
|
|
|
knobP = (int)(sPtr->floatValue * (float)(length - knobLength(sPtr)));
|
|
|
|
if (sPtr->flags.arrowsPosition == WSAMinEnd)
|
|
sPtr->dragPoint -= 2 + buttonsLen + knobP;
|
|
else
|
|
sPtr->dragPoint -= 2 + knobP;
|
|
}
|
|
#endif /* STRICT_NEXT_BEHAVIOUR */
|
|
/* This does not seem necesary here since we don't know yet if the
|
|
* knob will be dragged later. -Dan
|
|
handleMotion(sPtr, pushX, pushY); */
|
|
break;
|
|
|
|
case WSDecrementWheel:
|
|
case WSIncrementWheel:
|
|
case WSKnobSlot:
|
|
case WSNoPart:
|
|
/* dummy */
|
|
break;
|
|
}
|
|
|
|
if (doAction && sPtr->action) {
|
|
(*sPtr->action) (sPtr, sPtr->clientData);
|
|
|
|
WMPostNotificationName(WMScrollerDidScrollNotification, sPtr, NULL);
|
|
}
|
|
}
|
|
|
|
static float floatValueForPoint(Scroller * sPtr, int point)
|
|
{
|
|
float floatValue = 0;
|
|
float position;
|
|
int slotOfs, slotLength, knobL;
|
|
|
|
if (sPtr->flags.horizontal)
|
|
slotLength = sPtr->view->size.width - 4;
|
|
else
|
|
slotLength = sPtr->view->size.height - 4;
|
|
|
|
slotOfs = 2;
|
|
if (sPtr->flags.arrowsPosition == WSAMaxEnd) {
|
|
slotLength -= (BUTTON_SIZE + 1) * 2;
|
|
} else if (sPtr->flags.arrowsPosition == WSAMinEnd) {
|
|
slotOfs += (BUTTON_SIZE + 1) * 2;
|
|
slotLength -= (BUTTON_SIZE + 1) * 2;
|
|
}
|
|
|
|
knobL = (float)knobLength(sPtr);
|
|
#ifdef STRICT_NEXT_BEHAVIOUR
|
|
if (point < slotOfs + knobL / 2)
|
|
position = (float)(slotOfs + knobL / 2);
|
|
else if (point > slotOfs + slotLength - knobL / 2)
|
|
position = (float)(slotOfs + slotLength - knobL / 2);
|
|
else
|
|
position = (float)point;
|
|
|
|
floatValue = (position - (float)(slotOfs + slotLength / 2))
|
|
/ (float)(slotLength - knobL);
|
|
#else
|
|
/* Adjust the last point to lie inside the knob slot */
|
|
if (point < slotOfs)
|
|
position = (float)slotOfs;
|
|
else if (point > slotOfs + slotLength)
|
|
position = (float)(slotOfs + slotLength);
|
|
else
|
|
position = (float)point;
|
|
|
|
/* Compute the float value */
|
|
floatValue = (position - (float)slotOfs) / (float)(slotLength - knobL);
|
|
#endif
|
|
|
|
assert(!isnan(floatValue));
|
|
return floatValue;
|
|
}
|
|
|
|
static void handleMotion(Scroller * sPtr, int mouseX, int mouseY)
|
|
{
|
|
if (sPtr->flags.draggingKnob) {
|
|
float newFloatValue;
|
|
int point;
|
|
|
|
if (sPtr->flags.horizontal) {
|
|
point = mouseX;
|
|
} else {
|
|
point = mouseY;
|
|
}
|
|
|
|
#ifndef STRICT_NEXT_BEHAVIOUR
|
|
point -= sPtr->dragPoint;
|
|
#endif
|
|
|
|
newFloatValue = floatValueForPoint(sPtr, point);
|
|
WMSetScrollerParameters(sPtr, newFloatValue, sPtr->knobProportion);
|
|
if (sPtr->action) {
|
|
(*sPtr->action) (sPtr, sPtr->clientData);
|
|
WMPostNotificationName(WMScrollerDidScrollNotification, sPtr, NULL);
|
|
}
|
|
} else {
|
|
int part;
|
|
|
|
part = locatePointInScroller(sPtr, mouseX, mouseY, False);
|
|
|
|
sPtr->flags.hitPart = part;
|
|
|
|
if (part == WSIncrementLine && sPtr->flags.decrDown) {
|
|
sPtr->flags.decrDown = 0;
|
|
sPtr->flags.incrDown = 1;
|
|
} else if (part == WSDecrementLine && sPtr->flags.incrDown) {
|
|
sPtr->flags.incrDown = 0;
|
|
sPtr->flags.decrDown = 1;
|
|
} else if (part != WSIncrementLine && part != WSDecrementLine) {
|
|
sPtr->flags.incrDown = 0;
|
|
sPtr->flags.decrDown = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void autoScroll(void *clientData)
|
|
{
|
|
Scroller *sPtr = (Scroller *) clientData;
|
|
|
|
if (sPtr->action) {
|
|
(*sPtr->action) (sPtr, sPtr->clientData);
|
|
WMPostNotificationName(WMScrollerDidScrollNotification, sPtr, NULL);
|
|
}
|
|
sPtr->timerID = WMAddTimerHandler(AUTOSCROLL_DELAY, autoScroll, clientData);
|
|
}
|
|
|
|
static void handleActionEvents(XEvent * event, void *data)
|
|
{
|
|
Scroller *sPtr = (Scroller *) data;
|
|
int wheelDecrement, wheelIncrement;
|
|
int id, dd;
|
|
|
|
/* check if we're really dealing with a scroller, as something
|
|
* might have gone wrong in the event dispatching stuff */
|
|
CHECK_CLASS(sPtr, WC_Scroller);
|
|
|
|
id = sPtr->flags.incrDown;
|
|
dd = sPtr->flags.decrDown;
|
|
|
|
switch (event->type) {
|
|
case EnterNotify:
|
|
break;
|
|
|
|
case LeaveNotify:
|
|
if (sPtr->timerID) {
|
|
WMDeleteTimerHandler(sPtr->timerID);
|
|
sPtr->timerID = NULL;
|
|
}
|
|
sPtr->flags.incrDown = 0;
|
|
sPtr->flags.decrDown = 0;
|
|
break;
|
|
|
|
case ButtonPress:
|
|
/* FIXME: change Mod1Mask with something else */
|
|
if (sPtr->flags.documentFullyVisible)
|
|
break;
|
|
|
|
if (sPtr->flags.horizontal) {
|
|
wheelDecrement = WINGsConfiguration.mouseWheelDown;
|
|
wheelIncrement = WINGsConfiguration.mouseWheelUp;
|
|
} else {
|
|
wheelDecrement = WINGsConfiguration.mouseWheelUp;
|
|
wheelIncrement = WINGsConfiguration.mouseWheelDown;
|
|
}
|
|
|
|
if (event->xbutton.button == wheelDecrement) {
|
|
if (event->xbutton.state & ControlMask) {
|
|
sPtr->flags.hitPart = WSDecrementPage;
|
|
} else if (event->xbutton.state & ShiftMask) {
|
|
sPtr->flags.hitPart = WSDecrementLine;
|
|
} else {
|
|
sPtr->flags.hitPart = WSDecrementWheel;
|
|
}
|
|
if (sPtr->action) {
|
|
(*sPtr->action) (sPtr, sPtr->clientData);
|
|
WMPostNotificationName(WMScrollerDidScrollNotification, sPtr, NULL);
|
|
}
|
|
} else if (event->xbutton.button == wheelIncrement) {
|
|
if (event->xbutton.state & ControlMask) {
|
|
sPtr->flags.hitPart = WSIncrementPage;
|
|
} else if (event->xbutton.state & ShiftMask) {
|
|
sPtr->flags.hitPart = WSIncrementLine;
|
|
} else {
|
|
sPtr->flags.hitPart = WSIncrementWheel;
|
|
}
|
|
if (sPtr->action) {
|
|
(*sPtr->action) (sPtr, sPtr->clientData);
|
|
WMPostNotificationName(WMScrollerDidScrollNotification, sPtr, NULL);
|
|
}
|
|
} else {
|
|
handlePush(sPtr, event->xbutton.x, event->xbutton.y, (event->xbutton.state & Mod1Mask)
|
|
|| event->xbutton.button == Button2);
|
|
/* continue scrolling if pushed on the buttons */
|
|
if (sPtr->flags.hitPart == WSIncrementLine || sPtr->flags.hitPart == WSDecrementLine) {
|
|
sPtr->timerID = WMAddTimerHandler(AUTOSCROLL_INITIAL_DELAY, autoScroll, sPtr);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case ButtonRelease:
|
|
if (sPtr->flags.draggingKnob) {
|
|
if (sPtr->action) {
|
|
(*sPtr->action) (sPtr, sPtr->clientData);
|
|
WMPostNotificationName(WMScrollerDidScrollNotification, sPtr, NULL);
|
|
}
|
|
}
|
|
if (sPtr->timerID) {
|
|
WMDeleteTimerHandler(sPtr->timerID);
|
|
sPtr->timerID = NULL;
|
|
}
|
|
sPtr->flags.incrDown = 0;
|
|
sPtr->flags.decrDown = 0;
|
|
sPtr->flags.draggingKnob = 0;
|
|
break;
|
|
|
|
case MotionNotify:
|
|
handleMotion(sPtr, event->xbutton.x, event->xbutton.y);
|
|
if (sPtr->timerID && sPtr->flags.hitPart != WSIncrementLine
|
|
&& sPtr->flags.hitPart != WSDecrementLine) {
|
|
WMDeleteTimerHandler(sPtr->timerID);
|
|
sPtr->timerID = NULL;
|
|
}
|
|
break;
|
|
}
|
|
if (id != sPtr->flags.incrDown || dd != sPtr->flags.decrDown)
|
|
paintScroller(sPtr);
|
|
}
|
|
|
|
static void destroyScroller(Scroller * sPtr)
|
|
{
|
|
/* we don't want autoscroll try to scroll a freed widget */
|
|
if (sPtr->timerID) {
|
|
WMDeleteTimerHandler(sPtr->timerID);
|
|
}
|
|
|
|
wfree(sPtr);
|
|
}
|