7 char *WMListDidScrollNotification
= "WMListDidScrollNotification";
8 char *WMListSelectionDidChangeNotification
= "WMListSelectionDidChangeNotification";
10 typedef struct W_List
{
14 WMArray
*items
; /* list of WMListItem */
15 WMArray
*selectedItems
; /* list of selected WMListItems */
21 short topItem
; /* index of first visible item */
23 short fullFitLines
; /* no of lines that fit entirely */
27 void *doubleClientData
;
28 WMAction
*doubleAction
;
32 WMHandlerID
*idleID
; /* for updating the scroller after adding elements */
34 WMScroller
*vScroller
;
37 unsigned int allowMultipleSelection
:1;
38 unsigned int allowEmptySelection
:1;
39 unsigned int userDrawn
:1;
40 unsigned int userItemHeight
:1;
41 unsigned int dontFitAll
:1; /* 1 = last item won't be fully visible */
42 unsigned int redrawPending
:1;
43 unsigned int buttonPressed
:1;
44 unsigned int buttonWasPressed
:1;
50 #define DEFAULT_WIDTH 150
51 #define DEFAULT_HEIGHT 150
54 static void destroyList(List
*lPtr
);
55 static void paintList(List
*lPtr
);
58 static void handleEvents(XEvent
*event
, void *data
);
59 static void handleActionEvents(XEvent
*event
, void *data
);
60 static void updateScroller(List
*lPtr
);
62 static void vScrollCallBack(WMWidget
*scroller
, void *self
);
64 static void updateGeometry(WMList
*lPtr
);
65 static void didResizeList();
68 W_ViewDelegate _ListViewDelegate
= {
78 releaseItem(void *data
)
80 WMListItem
*item
= (WMListItem
*)data
;
89 WMCreateList(WMWidget
*parent
)
92 W_Screen
*scrPtr
= W_VIEW(parent
)->screen
;
94 lPtr
= wmalloc(sizeof(List
));
95 memset(lPtr
, 0, sizeof(List
));
97 lPtr
->widgetClass
= WC_List
;
99 lPtr
->view
= W_CreateView(W_VIEW(parent
));
104 lPtr
->view
->self
= lPtr
;
106 lPtr
->view
->delegate
= &_ListViewDelegate
;
108 WMCreateEventHandler(lPtr
->view
, ExposureMask
|StructureNotifyMask
109 |ClientMessageMask
, handleEvents
, lPtr
);
111 WMCreateEventHandler(lPtr
->view
, ButtonPressMask
|ButtonReleaseMask
112 |EnterWindowMask
|LeaveWindowMask
|ButtonMotionMask
,
113 handleActionEvents
, lPtr
);
115 lPtr
->itemHeight
= WMFontHeight(scrPtr
->normalFont
) + 1;
117 lPtr
->items
= WMCreateArrayWithDestructor(4, releaseItem
);
118 lPtr
->selectedItems
= WMCreateArray(4);
120 /* create the vertical scroller */
121 lPtr
->vScroller
= WMCreateScroller(lPtr
);
122 WMMoveWidget(lPtr
->vScroller
, 1, 1);
123 WMSetScrollerArrowsPosition(lPtr
->vScroller
, WSAMaxEnd
);
125 WMSetScrollerAction(lPtr
->vScroller
, vScrollCallBack
, lPtr
);
127 /* make the scroller map itself when it's realized */
128 WMMapWidget(lPtr
->vScroller
);
130 W_ResizeView(lPtr
->view
, DEFAULT_WIDTH
, DEFAULT_HEIGHT
);
132 //lPtr->selectedItem = -1;
139 WMSetListAllowMultipleSelection(WMList
*lPtr
, Bool flag
)
141 lPtr
->flags
.allowMultipleSelection
= flag
? 1 : 0;
147 WMSetListAllowEmptySelection(WMList
*lPtr
, Bool flag
)
149 lPtr
->flags
.allowEmptySelection
= flag
? 1 : 0;
154 comparator(const void *a
, const void *b
)
156 return (strcmp((*(WMListItem
**)a
)->text
, (*(WMListItem
**)b
)->text
));
161 WMSortListItems(WMList
*lPtr
)
163 WMSortArray(lPtr
->items
, comparator
);
171 WMSortListItemsWithComparer(WMList
*lPtr
, WMCompareDataProc
*func
)
173 WMSortArray(lPtr
->items
, func
);
181 WMInsertListItem(WMList
*lPtr
, int row
, char *text
)
185 CHECK_CLASS(lPtr
, WC_List
);
187 item
= wmalloc(sizeof(WMListItem
));
188 memset(item
, 0, sizeof(WMListItem
));
189 item
->text
= wstrdup(text
);
192 //if (lPtr->selectedItem >= row && lPtr->selectedItem >= 0
194 // lPtr->selectedItem++;
196 row
= WMIN(row
, WMGetArrayItemCount(lPtr
->items
));
199 WMAddToArray(lPtr
->items
, item
);
201 WMInsertInArray(lPtr
->items
, row
, item
);
203 /* update the scroller when idle, so that we don't waste time
204 * updating it when another item is going to be added later */
206 lPtr
->idleID
= WMAddIdleHandler((WMCallback
*)updateScroller
, lPtr
);
214 WMRemoveListItem(WMList
*lPtr
, int row
)
217 int topItem
= lPtr
->topItem
;
220 CHECK_CLASS(lPtr
, WC_List
);
222 if (row
< 0 || row
>= WMGetArrayItemCount(lPtr
->items
))
225 item
= WMGetFromArray(lPtr
->items
, row
);
226 if (item
->flags
.selected
) {
227 WMRemoveFromArray(lPtr
->selectedItems
, item
);
228 //WMUnselectListItem(lPtr, row);
232 //if (lPtr->selectedItem == row) {
233 // lPtr->selectedItem = -1;
235 //} else if (lPtr->selectedItem > row) {
236 // lPtr->selectedItem--;
239 if (row
<= lPtr
->topItem
+lPtr
->fullFitLines
+lPtr
->flags
.dontFitAll
)
241 if (lPtr
->topItem
< 0)
244 WMDeleteFromArray(lPtr
->items
, row
);
247 lPtr
->idleID
= WMAddIdleHandler((WMCallback
*)updateScroller
, lPtr
);
249 if (lPtr
->topItem
!= topItem
) {
250 WMPostNotificationName(WMListDidScrollNotification
, lPtr
, NULL
);
253 WMPostNotificationName(WMListSelectionDidChangeNotification
, lPtr
, NULL
);
261 WMGetListItem(WMList
*lPtr
, int row
)
263 return WMGetFromArray(lPtr
->items
, row
);
268 WMGetListItems(WMList
*lPtr
)
275 WMSetListUserDrawProc(WMList
*lPtr
, WMListDrawProc
*proc
)
277 lPtr
->flags
.userDrawn
= 1;
283 WMSetListUserDrawItemHeight(WMList
*lPtr
, unsigned short height
)
287 lPtr
->flags
.userItemHeight
= 1;
288 lPtr
->itemHeight
= height
;
290 updateGeometry(lPtr
);
295 WMClearList(WMList
*lPtr
)
297 int selNo
= WMGetArrayItemCount(lPtr
->selectedItems
);
299 WMEmptyArray(lPtr
->selectedItems
);
300 WMEmptyArray(lPtr
->items
);
303 //lPtr->selectedItem = -1;
306 WMDeleteIdleHandler(lPtr
->idleID
);
309 if (lPtr
->view
->flags
.realized
) {
310 updateScroller(lPtr
);
313 WMPostNotificationName(WMListSelectionDidChangeNotification
, lPtr
, NULL
);
319 WMSetListAction(WMList
*lPtr
, WMAction
*action
, void *clientData
)
321 lPtr
->action
= action
;
322 lPtr
->clientData
= clientData
;
327 WMSetListDoubleAction(WMList
*lPtr
, WMAction
*action
, void *clientData
)
329 lPtr
->doubleAction
= action
;
330 lPtr
->doubleClientData
= clientData
;
335 WMGetListSelectedItems(WMList
*lPtr
)
337 return lPtr
->selectedItems
;
342 WMGetListSelectedItem(WMList
*lPtr
)
344 return WMGetFromArray(lPtr
->selectedItems
, 0);
349 WMGetListSelectedItemRow(WMList
*lPtr
)
351 WMListItem
*item
= WMGetFromArray(lPtr
->selectedItems
, 0);
353 return (item
!=NULL
? WMGetFirstInArray(lPtr
->items
, item
) : WLNotFound
);
358 WMGetListItemHeight(WMList
*lPtr
)
360 return lPtr
->itemHeight
;
365 WMSetListPosition(WMList
*lPtr
, int row
)
368 if (lPtr
->topItem
+ lPtr
->fullFitLines
> WMGetArrayItemCount(lPtr
->items
))
369 lPtr
->topItem
= WMGetArrayItemCount(lPtr
->items
) - lPtr
->fullFitLines
;
371 if (lPtr
->topItem
< 0)
374 if (lPtr
->view
->flags
.realized
)
375 updateScroller(lPtr
);
380 WMSetListBottomPosition(WMList
*lPtr
, int row
)
382 if (WMGetArrayItemCount(lPtr
->items
) > lPtr
->fullFitLines
) {
383 lPtr
->topItem
= row
- lPtr
->fullFitLines
;
384 if (lPtr
->topItem
< 0)
386 if (lPtr
->view
->flags
.realized
)
387 updateScroller(lPtr
);
393 WMGetListNumberOfRows(WMList
*lPtr
)
395 return WMGetArrayItemCount(lPtr
->items
);
400 WMGetListPosition(WMList
*lPtr
)
402 return lPtr
->topItem
;
407 WMListAllowsMultipleSelection(WMList
*lPtr
)
409 return lPtr
->flags
.allowMultipleSelection
;
414 WMListAllowsEmptySelection(WMList
*lPtr
)
416 return lPtr
->flags
.allowEmptySelection
;
421 vScrollCallBack(WMWidget
*scroller
, void *self
)
423 WMList
*lPtr
= (WMList
*)self
;
424 WMScroller
*sPtr
= (WMScroller
*)scroller
;
426 int topItem
= lPtr
->topItem
;
427 int itemCount
= WMGetArrayItemCount(lPtr
->items
);
429 height
= lPtr
->view
->size
.height
- 4;
431 switch (WMGetScrollerHitPart(sPtr
)) {
432 case WSDecrementLine
:
433 if (lPtr
->topItem
> 0) {
436 updateScroller(lPtr
);
440 case WSDecrementPage
:
441 if (lPtr
->topItem
> 0) {
442 lPtr
->topItem
-= lPtr
->fullFitLines
-(1-lPtr
->flags
.dontFitAll
)-1;
443 if (lPtr
->topItem
< 0)
446 updateScroller(lPtr
);
451 case WSIncrementLine
:
452 if (lPtr
->topItem
+ lPtr
->fullFitLines
< itemCount
) {
455 updateScroller(lPtr
);
459 case WSIncrementPage
:
460 if (lPtr
->topItem
+ lPtr
->fullFitLines
< itemCount
) {
461 lPtr
->topItem
+= lPtr
->fullFitLines
-(1-lPtr
->flags
.dontFitAll
)-1;
463 if (lPtr
->topItem
+ lPtr
->fullFitLines
> itemCount
)
464 lPtr
->topItem
= itemCount
- lPtr
->fullFitLines
;
466 updateScroller(lPtr
);
472 int oldTopItem
= lPtr
->topItem
;
474 lPtr
->topItem
= WMGetScrollerValue(lPtr
->vScroller
) *
475 (float)(itemCount
- lPtr
->fullFitLines
);
477 if (oldTopItem
!= lPtr
->topItem
)
488 if (lPtr
->topItem
!= topItem
)
489 WMPostNotificationName(WMListDidScrollNotification
, lPtr
, NULL
);
494 paintItem(List
*lPtr
, int index
)
496 WMView
*view
= lPtr
->view
;
497 W_Screen
*scr
= view
->screen
;
498 int width
, height
, x
, y
;
501 itemPtr
= WMGetFromArray(lPtr
->items
, index
);
503 width
= lPtr
->view
->size
.width
- 2 - 19;
504 height
= lPtr
->itemHeight
;
506 y
= 2 + (index
-lPtr
->topItem
) * lPtr
->itemHeight
+ 1;
508 if (lPtr
->flags
.userDrawn
) {
512 rect
.size
.width
= width
;
513 rect
.size
.height
= height
;
517 flags
= itemPtr
->uflags
;
518 if (itemPtr
->disabled
)
519 flags
|= WLDSDisabled
;
520 if (itemPtr
->selected
)
521 flags
|= WLDSSelected
;
522 if (itemPtr
->isBranch
)
523 flags
|= WLDSIsBranch
;
526 (*lPtr
->draw
)(lPtr
, index
, view
->window
, itemPtr
->text
, flags
,
529 if (itemPtr
->selected
) {
530 XFillRectangle(scr
->display
, view
->window
, WMColorGC(scr
->white
),
531 x
, y
, width
, height
);
533 XClearArea(scr
->display
, view
->window
, x
, y
, width
, height
, False
);
536 W_PaintText(view
, view
->window
, scr
->normalFont
, x
+4, y
, width
,
537 WALeft
, WMColorGC(scr
->black
), False
,
538 itemPtr
->text
, strlen(itemPtr
->text
));
545 paintList(List
*lPtr
)
547 W_Screen
*scrPtr
= lPtr
->view
->screen
;
550 if (!lPtr
->view
->flags
.mapped
)
553 if (WMGetArrayItemCount(lPtr
->items
) > 0) {
554 if (lPtr
->topItem
+lPtr
->fullFitLines
+lPtr
->flags
.dontFitAll
555 > WMGetArrayItemCount(lPtr
->items
)) {
557 lim
= WMGetArrayItemCount(lPtr
->items
) - lPtr
->topItem
;
558 XClearArea(scrPtr
->display
, lPtr
->view
->window
, 19,
559 2+lim
*lPtr
->itemHeight
, lPtr
->view
->size
.width
-21,
560 lPtr
->view
->size
.height
-lim
*lPtr
->itemHeight
-3, False
);
562 lim
= lPtr
->fullFitLines
+ lPtr
->flags
.dontFitAll
;
564 for (i
= lPtr
->topItem
; i
< lPtr
->topItem
+ lim
; i
++) {
568 XClearWindow(scrPtr
->display
, lPtr
->view
->window
);
570 W_DrawRelief(scrPtr
, lPtr
->view
->window
, 0, 0, lPtr
->view
->size
.width
,
571 lPtr
->view
->size
.height
, WRSunken
);
576 scrollTo(List
*lPtr
, int newTop
)
583 updateScroller(List
*lPtr
)
585 float knobProportion
, floatValue
, tmp
;
586 int count
= WMGetArrayItemCount(lPtr
->items
);
589 WMDeleteIdleHandler(lPtr
->idleID
);
594 if (count
== 0 || count
<= lPtr
->fullFitLines
)
595 WMSetScrollerParameters(lPtr
->vScroller
, 0, 1);
597 tmp
= lPtr
->fullFitLines
;
598 knobProportion
= tmp
/(float)count
;
600 floatValue
= (float)lPtr
->topItem
/(float)(count
- lPtr
->fullFitLines
);
602 WMSetScrollerParameters(lPtr
->vScroller
, floatValue
, knobProportion
);
608 handleEvents(XEvent
*event
, void *data
)
610 List
*lPtr
= (List
*)data
;
612 CHECK_CLASS(data
, WC_List
);
615 switch (event
->type
) {
617 if (event
->xexpose
.count
!=0)
631 matchTitle(void *item
, void *title
)
633 return (strcmp(((WMListItem
*)item
)->text
, (char*)title
)==0 ? 1 : 0);
638 WMFindRowOfListItemWithTitle(WMList
*lPtr
, char *title
)
640 return WMFindInArray(lPtr
->items
, matchTitle
, title
);
645 WMSelectListItem(WMList
*lPtr
, int row
)
647 WMListItem
*item
, *oldSelected
;
649 if (row
>= WMGetArrayItemCount(lPtr
->items
))
652 /* Should row = -1 deselect all or just do nothing ?. Check it. -Dan */
653 if (!lPtr
->flags
.allowMultipleSelection
) {
654 WMUnselectAllListItems(lPtr
);
659 item
= WMGetFromArray(lPtr
->items
, row
);
661 return; /* Return if already selected */
663 oldSelected
= WMGetFromArray(lPtr
->selectedItems
, 0);
665 /* unselect previous selected item if case */
666 if (!lPtr
->flags
.allowMultipleSelection
&& oldSelected
) {
667 int oldSelectedRow
= WMGetListSelectedItemRow(lPtr
);
669 // better call WMUnselectAllListItems() here? -Dan
670 oldSelected
->selected
= 0;
671 WMDeleteFromArray(lPtr
->selectedItems
, 0);
672 // This is faster and have the same effect in the single selected case
673 // but may leave xxx->selected flags set after a multi->single selected
675 //WMEmptyArray(lPtr->selectedItems);
677 if (lPtr
->view
->flags
.mapped
&& oldSelectedRow
>=lPtr
->topItem
678 && oldSelectedRow
<=lPtr
->topItem
+lPtr
->fullFitLines
) {
679 paintItem(lPtr
, oldSelectedRow
);
685 WMAddToArray(lPtr
->selectedItems
, item
);
687 if (lPtr
->view
->flags
.mapped
) {
688 paintItem(lPtr
, row
);
690 if ((row
-lPtr
->topItem
+lPtr
->fullFitLines
)*lPtr
->itemHeight
691 > lPtr
->view
->size
.height
-2)
692 W_DrawRelief(lPtr
->view
->screen
, lPtr
->view
->window
, 0, 0,
693 lPtr
->view
->size
.width
, lPtr
->view
->size
.height
,
696 //lPtr->selectedItem = row;
698 WMPostNotificationName(WMListSelectionDidChangeNotification
, lPtr
, NULL
);
703 getItemIndexAt(List
*lPtr
, int clickY
)
707 index
= (clickY
- 2) / lPtr
->itemHeight
+ lPtr
->topItem
;
709 if (index
< 0 || index
>= WMGetArrayItemCount(lPtr
->items
))
717 handleActionEvents(XEvent
*event
, void *data
)
719 List
*lPtr
= (List
*)data
;
721 int topItem
= lPtr
->topItem
;
723 CHECK_CLASS(data
, WC_List
);
725 switch (event
->type
) {
727 #define CHECK_WHEEL_PATCH
728 #ifdef CHECK_WHEEL_PATCH
729 /* Ignore mouse wheel events, they're not "real" button events */
730 if (event
->xbutton
.button
== WINGsConfiguration
.mouseWheelUp
||
731 event
->xbutton
.button
== WINGsConfiguration
.mouseWheelDown
)
735 lPtr
->flags
.buttonPressed
= 0;
736 tmp
= getItemIndexAt(lPtr
, event
->xbutton
.y
);
738 if (tmp
== lPtr
->selectedItem
&& tmp
>= 0) {
740 (*lPtr
->action
)(lPtr
, lPtr
->clientData
);
745 lPtr
->flags
.buttonPressed
= lPtr
->flags
.buttonWasPressed
;
746 lPtr
->flags
.buttonWasPressed
= 0;
750 lPtr
->flags
.buttonWasPressed
= lPtr
->flags
.buttonPressed
;
751 lPtr
->flags
.buttonPressed
= 0;
755 if (event
->xbutton
.x
> WMWidgetWidth(lPtr
->vScroller
)) {
756 #ifdef CHECK_WHEEL_PATCH
757 /* Mouse wheel events need to be properly handled here. It would
758 * be best to somehow route them to lPtr->vScroller so that the
759 * correct chain of actions is triggered. However, I found no
760 * clean way to do so, so I mostly copied the code that deals with
761 * WSIncrementPage and WSDecrementPage from vScrollCallBack.
763 * - Martynas Kunigelis <diskena@linuxfreak.com> */
765 if (event
->xbutton
.button
== WINGsConfiguration
.mouseWheelDown
) {
767 int itemCount
= WMGetArrayItemCount(lPtr
->items
);
768 if (lPtr
->topItem
+ lPtr
->fullFitLines
< itemCount
) {
769 int incr
= lPtr
->fullFitLines
-(1-lPtr
->flags
.dontFitAll
)-1;
770 lPtr
->topItem
+= incr
;
772 if (lPtr
->topItem
+ lPtr
->fullFitLines
> itemCount
)
773 lPtr
->topItem
= itemCount
- lPtr
->fullFitLines
;
775 updateScroller(lPtr
);
780 if (event
->xbutton
.button
== WINGsConfiguration
.mouseWheelUp
) {
782 if (lPtr
->topItem
> 0) {
783 int decr
= lPtr
->fullFitLines
-(1-lPtr
->flags
.dontFitAll
)-1;
784 lPtr
->topItem
-= decr
;
786 if (lPtr
->topItem
< 0)
789 updateScroller(lPtr
);
795 tmp
= getItemIndexAt(lPtr
, event
->xbutton
.y
);
796 lPtr
->flags
.buttonPressed
= 1;
799 if (tmp
== lPtr
->selectedItem
&& WMIsDoubleClick(event
)) {
800 WMSelectListItem(lPtr
, tmp
);
801 if (lPtr
->doubleAction
)
802 (*lPtr
->doubleAction
)(lPtr
, lPtr
->doubleClientData
);
804 WMSelectListItem(lPtr
, tmp
);
811 if (lPtr
->flags
.buttonPressed
) {
812 tmp
= getItemIndexAt(lPtr
, event
->xmotion
.y
);
813 if (tmp
>=0 && tmp
!= lPtr
->selectedItem
) {
814 WMSelectListItem(lPtr
, tmp
);
819 if (lPtr
->topItem
!= topItem
)
820 WMPostNotificationName(WMListDidScrollNotification
, lPtr
, NULL
);
825 updateGeometry(WMList
*lPtr
)
827 lPtr
->fullFitLines
= (lPtr
->view
->size
.height
- 4) / lPtr
->itemHeight
;
828 if (lPtr
->fullFitLines
* lPtr
->itemHeight
< lPtr
->view
->size
.height
- 4) {
829 lPtr
->flags
.dontFitAll
= 1;
831 lPtr
->flags
.dontFitAll
= 0;
834 if (WMGetArrayItemCount(lPtr
->items
) - lPtr
->topItem
<= lPtr
->fullFitLines
) {
835 lPtr
->topItem
= WMGetArrayItemCount(lPtr
->items
) - lPtr
->fullFitLines
;
836 if (lPtr
->topItem
< 0)
840 updateScroller(lPtr
);
845 didResizeList(W_ViewDelegate
*self
, WMView
*view
)
847 WMList
*lPtr
= (WMList
*)view
->self
;
849 WMResizeWidget(lPtr
->vScroller
, 1, view
->size
.height
-2);
851 updateGeometry(lPtr
);
856 destroyList(List
*lPtr
)
859 WMDeleteIdleHandler(lPtr
->idleID
);
862 WMFreeArray(lPtr
->items
);