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author | inmarket <andrewh@inmarket.com.au> | 2015-04-30 11:32:10 +1000 |
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committer | inmarket <andrewh@inmarket.com.au> | 2015-04-30 11:32:10 +1000 |
commit | 0501f24f47adcd6439b469a6dc5244961b291f9c (patch) | |
tree | 12f41ca892b428b0c8871cb73b51cd51407475e0 /src/gwin/gwin_list.c | |
parent | 83c0eb35261704499bad756049c158133f7486eb (diff) | |
download | uGFX-0501f24f47adcd6439b469a6dc5244961b291f9c.tar.gz uGFX-0501f24f47adcd6439b469a6dc5244961b291f9c.tar.bz2 uGFX-0501f24f47adcd6439b469a6dc5244961b291f9c.zip |
Add the ability to change a gwin list selection via the api
Add the ability to scroll a particular item into the current view.
Diffstat (limited to 'src/gwin/gwin_list.c')
-rw-r--r-- | src/gwin/gwin_list.c | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/src/gwin/gwin_list.c b/src/gwin/gwin_list.c index b5bb531d..2e3cb8e5 100644 --- a/src/gwin/gwin_list.c +++ b/src/gwin/gwin_list.c @@ -569,6 +569,65 @@ const char* gwinListGetSelectedText(GHandle gh) { return gwinListItemGetText(gh, gwinListGetSelected(gh)); } +void gwinListSetSelected(GHandle gh, int item, bool_t doSelect) { + const gfxQueueASyncItem * qi; + int i; + + // is it a valid handle? + if (gh->vmt != (gwinVMT *)&listVMT) + return; + + // watch out for an invalid item + if (item < 0 || item >= gh2obj->cnt) + return; + + // If not a multiselect mode - clear previous selected item + if (doSelect && !(gh->flags & GLIST_FLG_MULTISELECT)) { + for(qi = gfxQueueASyncPeek(&gh2obj->list_head); qi; qi = gfxQueueASyncNext(qi)) { + if (qi2li->flags & GLIST_FLG_SELECTED) { + qi2li->flags &= ~GLIST_FLG_SELECTED; + break; + } + } + } + + // Find item and set selected or not + for(qi = gfxQueueASyncPeek(&gh2obj->list_head), i = 0; qi; qi = gfxQueueASyncNext(qi), i++) { + if (i == item) { + if (doSelect) + qi2li->flags |= GLIST_FLG_SELECTED; + else + qi2li->flags &= ~GLIST_FLG_SELECTED; + break; + } + } + _gwinUpdate(gh); +} + +void gwinListViewItem(GHandle gh, int item) { + coord_t iheight; + + // is it a valid handle? + if (gh->vmt != (gwinVMT *)&listVMT) + return; + + // watch out for an invalid item + if (item < 0 || item >= gh2obj->cnt) + return; + + // Work out a possible new top for the list + iheight = gdispGetFontMetric(gh->font, fontHeight) + VERTICAL_PADDING; + gh2obj->top = iheight * item; + + // Adjust the list + if (gh2obj->top > gh2obj->cnt * iheight - gh->height-2) + gh2obj->top = gh2obj->cnt * iheight - gh->height-2; + if (gh2obj->top < 0) + gh2obj->top = 0; + + _gwinUpdate(gh); +} + #if GWIN_NEED_LIST_IMAGES void gwinListItemSetImage(GHandle gh, int item, gdispImage *pimg) { const gfxQueueASyncItem * qi; |