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Mouse wheel code enhancement (need to check if its correctly implemented)

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dan
2000-05-08 22:15:05 +00:00
parent 27838589a5
commit 139b34c7af
2 changed files with 56 additions and 9 deletions
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49
WINGs/wlist.c
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@@ -697,6 +697,14 @@ handleActionEvents(XEvent *event, void *data)
switch (event->type) {
case ButtonRelease:
#define CHECK_WHEEL_PATCH
#ifdef CHECK_WHEEL_PATCH
/* Ignore mouse wheel events, they're not "real" button events */
if (event->xbutton.button == WINGsConfiguration.mouseWheelUp ||
event->xbutton.button == WINGsConfiguration.mouseWheelDown)
break;
#endif
lPtr->flags.buttonPressed = 0;
tmp = getItemIndexAt(lPtr, event->xbutton.y);
@@ -718,7 +726,46 @@ handleActionEvents(XEvent *event, void *data)
case ButtonPress:
if (event->xbutton.x > WMWidgetWidth(lPtr->vScroller)) {
tmp = getItemIndexAt(lPtr, event->xbutton.y);
#ifdef CHECK_WHEEL_PATCH
/* Mouse wheel events need to be properly handled here. It would
* be best to somehow route them to lPtr->vScroller so that the
* correct chain of actions is triggered. However, I found no
* clean way to do so, so I mostly copied the code that deals with
* WSIncrementPage and WSDecrementPage from vScrollCallBack.
*
* - Martynas Kunigelis <diskena@linuxfreak.com> */
if (event->xbutton.button == WINGsConfiguration.mouseWheelDown) {
/* Wheel down */
int itemCount = WMGetBagItemCount(lPtr->items);
if (lPtr->topItem + lPtr->fullFitLines < itemCount) {
int incr = lPtr->fullFitLines-(1-lPtr->flags.dontFitAll)-1;
lPtr->topItem += incr;
if (lPtr->topItem + lPtr->fullFitLines > itemCount)
lPtr->topItem = itemCount - lPtr->fullFitLines;
updateScroller(lPtr);
}
break;
}
if (event->xbutton.button == WINGsConfiguration.mouseWheelUp) {
/* Wheel up */
if (lPtr->topItem > 0) {
int decr = lPtr->fullFitLines-(1-lPtr->flags.dontFitAll)-1;
lPtr->topItem -= decr;
if (lPtr->topItem < 0)
lPtr->topItem = 0;
updateScroller(lPtr);
}
break;
}
#endif
tmp = getItemIndexAt(lPtr, event->xbutton.y);
lPtr->flags.buttonPressed = 1;
if (tmp >= 0) {