mirror of
https://github.com/gryf/wmaker.git
synced 2026-02-14 12:55:47 +01:00
Initial revision
This commit is contained in:
scottc
797
WINGs/wlist.c
Normal file
797
WINGs/wlist.c
Normal file
@@ -0,0 +1,797 @@
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#include "WINGsP.h"
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typedef struct W_List {
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W_Class widgetClass;
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W_View *view;
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WMListItem *items; /* array of items */
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short itemCount;
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short selectedItem;
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short itemHeight;
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short topItem; /* index of first visible item */
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short fullFitLines; /* no of lines that fit entirely */
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void *clientData;
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WMAction *action;
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void *doubleClientData;
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WMAction *doubleAction;
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WMListDrawProc *draw;
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WMHandlerID *idleID; /* for updating the scroller after
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* adding elements */
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WMScroller *vScroller;
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/*
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WMScroller *hScroller;
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*/
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struct {
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unsigned int allowMultipleSelection:1;
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unsigned int userDrawn:1;
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unsigned int userItemHeight:1;
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/* */
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unsigned int dontFitAll:1; /* 1 = last item won't be fully visible */
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unsigned int redrawPending:1;
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unsigned int buttonPressed:1;
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unsigned int buttonWasPressed:1;
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} flags;
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} List;
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#define DEFAULT_WIDTH 150
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#define DEFAULT_HEIGHT 150
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static void destroyList(List *lPtr);
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static void paintList(List *lPtr);
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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 updateScroller(List *lPtr);
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static void vScrollCallBack(WMWidget *scroller, void *self);
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static void resizeList();
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W_ViewProcedureTable _ListViewProcedures = {
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NULL,
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resizeList,
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NULL
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};
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WMList*
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WMCreateList(WMWidget *parent)
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{
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List *lPtr;
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W_Screen *scrPtr = W_VIEW(parent)->screen;
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lPtr = wmalloc(sizeof(List));
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memset(lPtr, 0, sizeof(List));
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lPtr->widgetClass = WC_List;
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lPtr->view = W_CreateView(W_VIEW(parent));
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if (!lPtr->view) {
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free(lPtr);
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return NULL;
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}
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lPtr->view->self = lPtr;
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WMCreateEventHandler(lPtr->view, ExposureMask|StructureNotifyMask
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|ClientMessageMask, handleEvents, lPtr);
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WMCreateEventHandler(lPtr->view, ButtonPressMask|ButtonReleaseMask
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|EnterWindowMask|LeaveWindowMask|ButtonMotionMask,
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handleActionEvents, lPtr);
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lPtr->itemHeight = scrPtr->normalFont->height + 1;
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/* create the vertical scroller */
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lPtr->vScroller = WMCreateScroller(lPtr);
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WMMoveWidget(lPtr->vScroller, 1, 1);
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WMSetScrollerArrowsPosition(lPtr->vScroller, WSAMaxEnd);
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WMSetScrollerAction(lPtr->vScroller, vScrollCallBack, lPtr);
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/* make the scroller map itself when it's realized */
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WMMapWidget(lPtr->vScroller);
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resizeList(lPtr, DEFAULT_WIDTH, DEFAULT_HEIGHT);
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lPtr->selectedItem = -1;
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return lPtr;
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}
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WMListItem*
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WMAddSortedListItem(WMList *lPtr, char *text)
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{
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WMListItem *item;
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WMListItem *tmp;
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int index;
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item = wmalloc(sizeof(WMListItem));
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memset(item, 0, sizeof(WMListItem));
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item->text = wstrdup(text);
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if (!lPtr->items) {
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lPtr->items = item;
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index = 0;
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} else if (strcmp(lPtr->items->text, text) > 0) {
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item->nextPtr = lPtr->items;
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lPtr->items = item;
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index = 1;
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} else {
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int added = 0;
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index = 0;
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tmp = lPtr->items;
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while (tmp->nextPtr) {
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if (strcmp(tmp->nextPtr->text, text) >= 0) {
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item->nextPtr = tmp->nextPtr;
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tmp->nextPtr = item;
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added = 1;
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break;
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}
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index++;
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tmp = tmp->nextPtr;
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}
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if (!added) {
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tmp->nextPtr = item;
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}
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}
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lPtr->itemCount++;
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if (lPtr->selectedItem >= index)
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lPtr->selectedItem++;
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/* update the scroller when idle, so that we don't waste time
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* updating it when another item is going to be added later */
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if (!lPtr->idleID) {
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lPtr->idleID = WMAddIdleHandler((WMCallback*)updateScroller, lPtr);
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}
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return item;
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}
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WMListItem*
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WMInsertListItem(WMList *lPtr, int row, char *text)
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{
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WMListItem *item;
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WMListItem *tmp = lPtr->items;
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CHECK_CLASS(lPtr, WC_List);
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item = wmalloc(sizeof(WMListItem));
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memset(item, 0, sizeof(WMListItem));
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item->text = wstrdup(text);
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if (lPtr->selectedItem >= row && lPtr->selectedItem >= 0)
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lPtr->selectedItem++;
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if (lPtr->items==NULL) {
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lPtr->items = item;
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} else if (row == 0) {
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item->nextPtr = lPtr->items;
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lPtr->items = item;
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} else if (row < 0) {
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while (tmp->nextPtr)
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tmp = tmp->nextPtr;
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tmp->nextPtr = item;
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row = lPtr->itemCount;
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} else {
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while (--row > 0)
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tmp = tmp->nextPtr;
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item->nextPtr = tmp->nextPtr;
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tmp->nextPtr = item;
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}
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lPtr->itemCount++;
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/* update the scroller when idle, so that we don't waste time
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* updating it when another item is going to be added later */
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if (!lPtr->idleID) {
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lPtr->idleID = WMAddIdleHandler((WMCallback*)updateScroller, lPtr);
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}
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return item;
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}
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void
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WMRemoveListItem(WMList *lPtr, int row)
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{
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WMListItem *llist;
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WMListItem *tmp;
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CHECK_CLASS(lPtr, WC_List);
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if (row < 0 || row >= lPtr->itemCount)
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return;
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if (lPtr->selectedItem == row)
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lPtr->selectedItem = -1;
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else if (lPtr->selectedItem > row)
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lPtr->selectedItem--;
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if (row <= lPtr->topItem+lPtr->fullFitLines+lPtr->flags.dontFitAll)
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lPtr->topItem--;
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if (lPtr->topItem < 0)
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lPtr->topItem = 0;
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if (row == 0) {
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if (lPtr->items->text)
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free(lPtr->items->text);
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tmp = lPtr->items->nextPtr;
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free(lPtr->items);
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lPtr->items = tmp;
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} else {
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llist = lPtr->items;
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while (--row > 0)
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llist = llist->nextPtr;
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tmp = llist->nextPtr;
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llist->nextPtr = llist->nextPtr->nextPtr;
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if (tmp->text)
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free(tmp->text);
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free(tmp);
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}
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lPtr->itemCount--;
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if (!lPtr->idleID) {
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lPtr->idleID = WMAddIdleHandler((WMCallback*)updateScroller, lPtr);
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}
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}
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WMListItem*
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WMGetListItem(WMList *lPtr, int row)
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{
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WMListItem *listPtr;
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listPtr = lPtr->items;
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while (row-- > 0)
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listPtr = listPtr->nextPtr;
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return listPtr;
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}
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void
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WMSetListUserDrawProc(WMList *lPtr, WMListDrawProc *proc)
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{
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lPtr->flags.userDrawn = 1;
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lPtr->draw = proc;
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}
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void
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WMSetListUserDrawItemHeight(WMList *lPtr, unsigned short height)
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{
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assert(height > 0);
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lPtr->flags.userItemHeight = 1;
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lPtr->itemHeight = height;
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}
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void
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WMClearList(WMList *lPtr)
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{
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WMListItem *item, *tmp;
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item = lPtr->items;
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while (item) {
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free(item->text);
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tmp = item->nextPtr;
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free(item);
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item = tmp;
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}
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lPtr->items = NULL;
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lPtr->itemCount = 0;
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lPtr->topItem = 0;
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lPtr->selectedItem = -1;
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if (!lPtr->idleID) {
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WMDeleteIdleHandler(lPtr->idleID);
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lPtr->idleID = NULL;
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}
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if (lPtr->view->flags.realized) {
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updateScroller(lPtr);
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}
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}
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void
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WMSetListAction(WMList *lPtr, WMAction *action, void *clientData)
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{
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lPtr->action = action;
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lPtr->clientData = clientData;
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}
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void
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WMSetListDoubleAction(WMList *lPtr, WMAction *action, void *clientData)
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{
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lPtr->doubleAction = action;
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lPtr->doubleClientData = clientData;
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}
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WMListItem*
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WMGetListSelectedItem(WMList *lPtr)
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{
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int i = lPtr->selectedItem;
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WMListItem *item;
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if (lPtr->selectedItem < 0)
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return NULL;
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item = lPtr->items;
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while (i-- > 0) {
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item = item->nextPtr;
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}
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return item;
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}
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int
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WMGetListSelectedItemRow(WMList *lPtr)
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{
|
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return lPtr->selectedItem;
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}
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void
|
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WMSetListPosition(WMList *lPtr, int row)
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{
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lPtr->topItem = row;
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if (lPtr->topItem + lPtr->fullFitLines > lPtr->itemCount)
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lPtr->topItem = lPtr->itemCount - lPtr->fullFitLines;
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if (lPtr->topItem < 0)
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lPtr->topItem = 0;
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if (lPtr->view->flags.realized)
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updateScroller(lPtr);
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}
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void
|
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WMSetListBottomPosition(WMList *lPtr, int row)
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{
|
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if (lPtr->itemCount > lPtr->fullFitLines) {
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lPtr->topItem = row - lPtr->fullFitLines;
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if (lPtr->topItem < 0)
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lPtr->topItem = 0;
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if (lPtr->view->flags.realized)
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updateScroller(lPtr);
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}
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}
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int
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WMGetListNumberOfRows(WMList *lPtr)
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{
|
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return lPtr->itemCount;
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}
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int
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WMGetListPosition(WMList *lPtr)
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{
|
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return lPtr->topItem;
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}
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static void
|
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vScrollCallBack(WMWidget *scroller, void *self)
|
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{
|
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WMList *lPtr = (WMList*)self;
|
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WMScroller *sPtr = (WMScroller*)scroller;
|
||||
int height;
|
||||
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height = lPtr->view->size.height - 4;
|
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|
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switch (WMGetScrollerHitPart(sPtr)) {
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case WSDecrementLine:
|
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if (lPtr->topItem > 0) {
|
||||
lPtr->topItem--;
|
||||
|
||||
updateScroller(lPtr);
|
||||
}
|
||||
break;
|
||||
|
||||
case WSDecrementPage:
|
||||
if (lPtr->topItem > 0) {
|
||||
lPtr->topItem -= lPtr->fullFitLines-(1-lPtr->flags.dontFitAll)-1;
|
||||
if (lPtr->topItem < 0)
|
||||
lPtr->topItem = 0;
|
||||
|
||||
updateScroller(lPtr);
|
||||
}
|
||||
break;
|
||||
|
||||
|
||||
case WSIncrementLine:
|
||||
if (lPtr->topItem + lPtr->fullFitLines < lPtr->itemCount) {
|
||||
lPtr->topItem++;
|
||||
|
||||
updateScroller(lPtr);
|
||||
}
|
||||
break;
|
||||
|
||||
case WSIncrementPage:
|
||||
if (lPtr->topItem + lPtr->fullFitLines < lPtr->itemCount) {
|
||||
lPtr->topItem += lPtr->fullFitLines-(1-lPtr->flags.dontFitAll)-1;
|
||||
|
||||
if (lPtr->topItem + lPtr->fullFitLines > lPtr->itemCount)
|
||||
lPtr->topItem = lPtr->itemCount - lPtr->fullFitLines;
|
||||
|
||||
updateScroller(lPtr);
|
||||
}
|
||||
break;
|
||||
|
||||
case WSKnob:
|
||||
{
|
||||
int oldTopItem = lPtr->topItem;
|
||||
|
||||
lPtr->topItem = WMGetScrollerValue(lPtr->vScroller) *
|
||||
(float)(lPtr->itemCount - lPtr->fullFitLines);
|
||||
|
||||
if (oldTopItem != lPtr->topItem)
|
||||
paintList(lPtr);
|
||||
}
|
||||
break;
|
||||
|
||||
case WSKnobSlot:
|
||||
case WSNoPart:
|
||||
/* do nothing */
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
paintItem(List *lPtr, int index)
|
||||
{
|
||||
WMView *view = lPtr->view;
|
||||
W_Screen *scr = view->screen;
|
||||
int width, height, x, y;
|
||||
WMListItem *itemPtr;
|
||||
int i;
|
||||
|
||||
i = index;
|
||||
itemPtr = lPtr->items;
|
||||
while (i-- > 0)
|
||||
itemPtr = itemPtr->nextPtr;
|
||||
|
||||
width = lPtr->view->size.width - 2 - 19;
|
||||
height = lPtr->itemHeight;
|
||||
x = 19;
|
||||
y = 2 + (index-lPtr->topItem) * lPtr->itemHeight + 1;
|
||||
|
||||
if (lPtr->flags.userDrawn) {
|
||||
WMRect rect;
|
||||
int flags;
|
||||
|
||||
rect.size.width = width;
|
||||
rect.size.height = height;
|
||||
rect.pos.x = x;
|
||||
rect.pos.y = y;
|
||||
|
||||
flags = itemPtr->uflags;
|
||||
if (itemPtr->disabled)
|
||||
flags |= WLDSDisabled;
|
||||
if (itemPtr->selected)
|
||||
flags |= WLDSSelected;
|
||||
if (itemPtr->isBranch)
|
||||
flags |= WLDSIsBranch;
|
||||
|
||||
if (lPtr->draw)
|
||||
(*lPtr->draw)(lPtr, view->window, itemPtr->text, flags, &rect);
|
||||
|
||||
} else {
|
||||
if (itemPtr->selected)
|
||||
XFillRectangle(scr->display, view->window, W_GC(scr->white), x, y,
|
||||
width, height);
|
||||
else
|
||||
XClearArea(scr->display, view->window, x, y, width, height, False);
|
||||
|
||||
W_PaintText(view, view->window, scr->normalFont, x+4, y, width,
|
||||
WALeft, W_GC(scr->black), False,
|
||||
itemPtr->text, strlen(itemPtr->text));
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
static void
|
||||
paintList(List *lPtr)
|
||||
{
|
||||
W_Screen *scrPtr = lPtr->view->screen;
|
||||
int i, lim;
|
||||
|
||||
if (!lPtr->view->flags.mapped)
|
||||
return;
|
||||
|
||||
if (lPtr->itemCount>0) {
|
||||
if (lPtr->topItem+lPtr->fullFitLines+lPtr->flags.dontFitAll > lPtr->itemCount) {
|
||||
lim = lPtr->itemCount - lPtr->topItem;
|
||||
XClearArea(scrPtr->display, lPtr->view->window, 19,
|
||||
2+lim*lPtr->itemHeight, lPtr->view->size.width-21,
|
||||
lPtr->view->size.height-lim*lPtr->itemHeight-3, False);
|
||||
} else {
|
||||
lim = lPtr->fullFitLines + lPtr->flags.dontFitAll;
|
||||
}
|
||||
for (i = lPtr->topItem; i < lPtr->topItem + lim; i++) {
|
||||
paintItem(lPtr, i);
|
||||
}
|
||||
} else {
|
||||
XClearWindow(scrPtr->display, lPtr->view->window);
|
||||
}
|
||||
W_DrawRelief(scrPtr, lPtr->view->window, 0, 0, lPtr->view->size.width,
|
||||
lPtr->view->size.height, WRSunken);
|
||||
}
|
||||
|
||||
#if 0
|
||||
static void
|
||||
scrollTo(List *lPtr, int newTop)
|
||||
{
|
||||
|
||||
}
|
||||
#endif
|
||||
|
||||
static void
|
||||
updateScroller(List *lPtr)
|
||||
{
|
||||
float knobProportion, floatValue, tmp;
|
||||
|
||||
if (lPtr->idleID)
|
||||
WMDeleteIdleHandler(lPtr->idleID);
|
||||
lPtr->idleID = NULL;
|
||||
|
||||
paintList(lPtr);
|
||||
|
||||
if (lPtr->itemCount == 0 || lPtr->itemCount <= lPtr->fullFitLines)
|
||||
WMSetScrollerParameters(lPtr->vScroller, 0, 1);
|
||||
else {
|
||||
tmp = lPtr->fullFitLines;
|
||||
knobProportion = tmp/(float)lPtr->itemCount;
|
||||
|
||||
floatValue = (float)lPtr->topItem/(float)(lPtr->itemCount - lPtr->fullFitLines);
|
||||
|
||||
WMSetScrollerParameters(lPtr->vScroller, floatValue, knobProportion);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
handleEvents(XEvent *event, void *data)
|
||||
{
|
||||
List *lPtr = (List*)data;
|
||||
|
||||
CHECK_CLASS(data, WC_List);
|
||||
|
||||
|
||||
switch (event->type) {
|
||||
case Expose:
|
||||
if (event->xexpose.count!=0)
|
||||
break;
|
||||
paintList(lPtr);
|
||||
break;
|
||||
|
||||
case DestroyNotify:
|
||||
destroyList(lPtr);
|
||||
break;
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
int
|
||||
WMFindRowOfListItemWithTitle(WMList *lPtr, char *title)
|
||||
{
|
||||
WMListItem *item;
|
||||
int i;
|
||||
int ok = 0;
|
||||
|
||||
for (i=0, item=lPtr->items; item!=NULL; item=item->nextPtr, i++) {
|
||||
if (strcmp(item->text, title)==0) {
|
||||
ok = 1;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
return ok ? i : -1;
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
WMSelectListItem(WMList *lPtr, int row)
|
||||
{
|
||||
WMListItem *itemPtr;
|
||||
int i;
|
||||
|
||||
if (row >= lPtr->itemCount)
|
||||
return;
|
||||
|
||||
if (!lPtr->flags.allowMultipleSelection) {
|
||||
/* unselect previous selected item */
|
||||
if (lPtr->selectedItem >= 0) {
|
||||
itemPtr = lPtr->items;
|
||||
for (i=0; i<lPtr->selectedItem; i++)
|
||||
itemPtr = itemPtr->nextPtr;
|
||||
|
||||
if (itemPtr->selected) {
|
||||
itemPtr->selected = 0;
|
||||
if (lPtr->view->flags.mapped && i>=lPtr->topItem
|
||||
&& i<=lPtr->topItem+lPtr->fullFitLines)
|
||||
paintItem(lPtr, i);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (row < 0) {
|
||||
if (!lPtr->flags.allowMultipleSelection)
|
||||
lPtr->selectedItem = -1;
|
||||
return;
|
||||
}
|
||||
|
||||
/* select item */
|
||||
itemPtr = lPtr->items;
|
||||
for (i=0; i<row; i++)
|
||||
itemPtr = itemPtr->nextPtr;
|
||||
if (lPtr->flags.allowMultipleSelection)
|
||||
itemPtr->selected = !itemPtr->selected;
|
||||
else
|
||||
itemPtr->selected = 1;
|
||||
|
||||
if (lPtr->view->flags.mapped) {
|
||||
paintItem(lPtr, row);
|
||||
|
||||
if ((row-lPtr->topItem+lPtr->fullFitLines)*lPtr->itemHeight
|
||||
> lPtr->view->size.height-2)
|
||||
W_DrawRelief(lPtr->view->screen, lPtr->view->window, 0, 0,
|
||||
lPtr->view->size.width, lPtr->view->size.height,
|
||||
WRSunken);
|
||||
}
|
||||
lPtr->selectedItem = row;
|
||||
}
|
||||
|
||||
|
||||
static int
|
||||
getItemIndexAt(List *lPtr, int clickY)
|
||||
{
|
||||
int index;
|
||||
|
||||
index = (clickY - 2) / lPtr->itemHeight + lPtr->topItem;
|
||||
|
||||
if (index < 0 || index >= lPtr->itemCount)
|
||||
return -1;
|
||||
|
||||
return index;
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
handleActionEvents(XEvent *event, void *data)
|
||||
{
|
||||
List *lPtr = (List*)data;
|
||||
int tmp;
|
||||
|
||||
CHECK_CLASS(data, WC_List);
|
||||
|
||||
switch (event->type) {
|
||||
case ButtonRelease:
|
||||
lPtr->flags.buttonPressed = 0;
|
||||
tmp = getItemIndexAt(lPtr, event->xbutton.y);
|
||||
if (tmp == lPtr->selectedItem && tmp >= 0) {
|
||||
if (WMIsDoubleClick(event)) {
|
||||
if (lPtr->doubleAction)
|
||||
(*lPtr->doubleAction)(lPtr, lPtr->doubleClientData);
|
||||
} else {
|
||||
if (lPtr->action)
|
||||
(*lPtr->action)(lPtr, lPtr->clientData);
|
||||
}
|
||||
}
|
||||
break;
|
||||
|
||||
case EnterNotify:
|
||||
lPtr->flags.buttonPressed = lPtr->flags.buttonWasPressed;
|
||||
lPtr->flags.buttonWasPressed = 0;
|
||||
break;
|
||||
|
||||
case LeaveNotify:
|
||||
lPtr->flags.buttonWasPressed = lPtr->flags.buttonPressed;
|
||||
lPtr->flags.buttonPressed = 0;
|
||||
break;
|
||||
|
||||
case ButtonPress:
|
||||
if (event->xbutton.x > WMWidgetWidth(lPtr->vScroller)) {
|
||||
tmp = getItemIndexAt(lPtr, event->xbutton.y);
|
||||
|
||||
if (tmp>=0) {
|
||||
WMSelectListItem(lPtr, tmp);
|
||||
lPtr->selectedItem = tmp;
|
||||
}
|
||||
lPtr->flags.buttonPressed = 1;
|
||||
}
|
||||
break;
|
||||
|
||||
case MotionNotify:
|
||||
if (lPtr->flags.buttonPressed) {
|
||||
tmp = getItemIndexAt(lPtr, event->xmotion.y);
|
||||
if (tmp>=0 && tmp != lPtr->selectedItem) {
|
||||
WMSelectListItem(lPtr, tmp);
|
||||
lPtr->selectedItem = tmp;
|
||||
}
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
resizeList(WMList *lPtr, unsigned int width, unsigned int height)
|
||||
{
|
||||
W_ResizeView(lPtr->view, width, height);
|
||||
|
||||
WMResizeWidget(lPtr->vScroller, 1, height-2);
|
||||
|
||||
lPtr->fullFitLines = (height - 4) / lPtr->itemHeight;
|
||||
if (lPtr->fullFitLines * lPtr->itemHeight < height-4) {
|
||||
lPtr->flags.dontFitAll = 1;
|
||||
} else {
|
||||
lPtr->flags.dontFitAll = 0;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
destroyList(List *lPtr)
|
||||
{
|
||||
WMListItem *itemPtr;
|
||||
|
||||
if (lPtr->idleID)
|
||||
WMDeleteIdleHandler(lPtr->idleID);
|
||||
lPtr->idleID = NULL;
|
||||
|
||||
while (lPtr->items!=NULL) {
|
||||
itemPtr = lPtr->items;
|
||||
if (itemPtr->text)
|
||||
free(itemPtr->text);
|
||||
|
||||
lPtr->items = itemPtr->nextPtr;
|
||||
free(itemPtr);
|
||||
}
|
||||
|
||||
free(lPtr);
|
||||
}
|
||||
Reference in New Issue
Block a user