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/*
* This file is subject to the terms of the GFX License. If a copy of
* the license was not distributed with this file, you can obtain one at:
*
* http://ugfx.org/license.html
*/
/**
* @file include/gwin/list.h
* @brief GWIN list widget header file.
*
* @defgroup List List
* @ingroup GWIN
*
* @{
*/
#include "gfx.h"
#if GFX_USE_GWIN && GWIN_NEED_LIST
#include "gwin/class_gwin.h"
#include <string.h>
#define widget(gh) ((GListObject *)gh)
#define GLIST_FLG_MULTISELECT (GWIN_FIRST_CONTROL_FLAG << 0)
#define GLIST_FLG_HASIMAGES (GWIN_FIRST_CONTROL_FLAG << 1)
#define GLIST_FLG_SELECTED (GWIN_FIRST_CONTROL_FLAG << 2)
/*
Use gw->pstyle->background for the unselected fill.
Use gw->pstyle->enabled/disabled->text for unselected text color
Use gw->pstyle->enabled/disabled->edge for the surounding box
Use gw->pstyle->enabled/disabled->fill for the selected text fill
or gw->pstyle->pressed->fill for the selected text fill (which ever looks best)
and use gw->pstyle->pressed->text for the selected text color
*/
typedef struct ListItem {
gfxQueueASyncItem q_item; // This must be the first member in the struct
uint16_t id;
uint16_t flags;
#define LISTITEM_ALLOCEDTEXT 0x0001
#define LISTITEM_SELECTED 0x0002
uint16_t uparam;
const char* text;
#if GWIN_LIST_IMAGES
gdispImage* pimg;
#endif
} ListItem;
static void sendListEvent(GWidgetObject *gw) {
GSourceListener* psl;
GEvent* pe;
#define pse ((GEventGWinList *)pe)
// Trigger a GWIN list event
psl = 0;
while ((psl = geventGetSourceListener(GWIDGET_SOURCE, psl))) {
if (!(pe = geventGetEventBuffer(psl)))
continue
pse->type = GEVENT_GWIN_SLIDER;
pse->list = (GHandle)gw;
pse->item = 42;
geventSendEvent(psl);
}
#undef pse
}
static void gwinListDefaultDraw(GWidgetObject* gw, void* param) {
#define gcw ((GListObject *)gw)
(void)param;
uint16_t i, fheight;
gfxQueueASyncItem* qi;
fheight = gdispGetFontMetric(gwinGetDefaultFont(), fontHeight);
gdispDrawBox(gw->g.x, gw->g.y, gw->g.width, gw->g.height, Black);
for (qi = gfxQueueASyncPeek(&gcw->list_head), i = 0; qi; qi = gfxQueueASyncNext(qi), i += fheight + 4) {
if (((ListItem*)qi)->flags & GLIST_FLG_SELECTED)
gdispFillStringBox(gw->g.x + 3, gw->g.y + 3 + i, gw->g.width - 6, fheight, ((ListItem*)qi)->text, gwinGetDefaultFont(), White, Black, justifyLeft);
else
gdispFillStringBox(gw->g.x + 3, gw->g.y + 3 + i, gw->g.width - 6, fheight, ((ListItem*)qi)->text, gwinGetDefaultFont(), Black, White, justifyLeft);
}
#undef gcw
}
#if GINPUT_NEED_MOUSE
// A mouse down has occured over the list area
static void MouseDown(GWidgetObject* gw, coord_t x, coord_t y) {
#define gcw ((GListObject *)gw)
uint16_t i, item_id, item_height;
gfxQueueASyncItem* qi;
item_height = gdispGetFontMetric(gwinGetDefaultFont(), fontHeight) + 2;
item_id = (y - gw->g.y) / item_height;
printf("item_id = %d\r\n", item_id);
for(qi = gfxQueueASyncPeek(&gcw->list_head), i = 0; qi; qi = gfxQueueASyncNext(qi), i++) {
if (item_id == i)
((ListItem*)qi)->flags |= GLIST_FLG_SELECTED;
else
((ListItem*)qi)->flags &=~ GLIST_FLG_SELECTED;
}
_gwidgetRedraw((GHandle)gw);
sendListEvent(gw);
#undef gcw
}
#endif
static const gwidgetVMT listVMT = {
{
"List", // The class name
sizeof(GListObject), // The object size
_gwidgetDestroy, // The destroy routine
_gwidgetRedraw, // The redraw routine
0, // The after-clear routine
},
gwinListDefaultDraw, // default drawing routine
#if GINPUT_NEED_MOUSE
{
MouseDown,
0,
0,
},
#endif
#if GINPUT_NEED_TOGGLE
{
0,
0,
0,
0,
0,
},
#endif
#if GINPUT_NEED_DIAL
{
0,
0,
0,
0,
},
#endif
};
GHandle gwinListCreate(GListObject* widget, GWidgetInit* pInit) {
if (!(widget = (GListObject *)_gwidgetCreate(&widget->w, pInit, &listVMT)))
return 0;
// initialize the item queue
gfxQueueASyncInit(&(widget->list_head));
widget->cnt = 0;
gwinSetVisible(&widget->w.g, pInit->g.show);
return (GHandle)widget;
}
int gwinListAddItem(GHandle gh, const char* item_name, bool_t useAlloc) {
ListItem* newItem;
if (useAlloc) {
newItem = gfxAlloc(sizeof(newItem) + strlen(item_name) + 1);
// allocate string
newItem->text = gfxAlloc(strlen(item_name) + 1);
if (newItem->text == NULL)
return -1;
// assign text
newItem->text = item_name;
} else {
newItem = gfxAlloc(sizeof(newItem));
if (newItem == NULL)
return -1;
}
// the item is not selected when added
newItem->flags &=~ GLIST_FLG_SELECTED;
// add the new item to the list
gfxQueueASyncPut(&(widget(gh)->list_head), &newItem->q_item);
// increment the total amount of entries in the list widget
widget(gh)->cnt++;
}
int gwinListGetSelected(GHandle gh) {
gfxQueueASyncItem* qi;
uint16_t i;
//for(qi = gfxQueueASyncPeek(&gcw->list_head), i = 0; qi; qi = gfxQueueASyncNext(qi), i++) {
}
#endif // GFX_USE_GWIN && GWIN_NEED_LIST
/** @} */
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