/*************************************************************************** $RCSfile: dropdownbox.c,v $ ------------------- cvs : $Id: dropdownbox.c,v 1.1 2004/08/06 06:28:48 aquamaniac Exp $ begin : Mon Feb 09 2004 copyright : (C) 2004 by Martin Preuss email : martin@libchipcard.de *************************************************************************** * * * This library is free software; you can redistribute it and/or * * modify it under the terms of the GNU Lesser General Public * * License as published by the Free Software Foundation; either * * version 2.1 of the License, or (at your option) any later version. * * * * This library is distributed in the hope that it will be useful, * * but WITHOUT ANY WARRANTY; without even the implied warranty of * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * * Lesser General Public License for more details. * * * * You should have received a copy of the GNU Lesser General Public * * License along with this library; if not, write to the Free Software * * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * * MA 02111-1307 USA * * * ***************************************************************************/ #ifdef HAVE_CONFIG_H # include #endif #include "dropdownbox_p.h" #include #include #include #include #include #include #include #include #include #include /* for beep() and KEY_ defs */ GWEN_INHERIT(GWEN_WIDGET, GWEN_DROPDOWNBOX) GWEN_WIDGET *GWEN_DropDownBox_new(GWEN_WIDGET *parent, GWEN_TYPE_UINT32 flags, const char *name, int x, int y, int width, int height, const GWEN_STRINGLIST *sl){ GWEN_WIDGET *w; GWEN_DROPDOWNBOX *win; GWEN_TYPE_UINT32 wflags; int wx, wy, ww, wh; GWEN_STRINGLISTENTRY *se; const char *p; wflags=(flags & ~GWEN_WIDGET_FLAGS_WINDOWFLAGS & ~GWEN_WIDGET_FLAGS_FOCUSABLE & ~GWEN_WIDGET_FLAGS_HIGHLIGHT); w=GWEN_Widget_new(parent, wflags, name, 0, x, y, width, height); GWEN_Widget_SetTypeName(w, "DropDownBox"); GWEN_NEW_OBJECT(GWEN_DROPDOWNBOX, win); GWEN_INHERIT_SETDATA(GWEN_WIDGET, GWEN_DROPDOWNBOX, w, win, GWEN_DropDownBox_freeData); win->previousHandler=GWEN_Widget_GetEventHandler(w); assert(win->previousHandler); win->flags=flags; win->stringList=GWEN_StringList_dup(sl); if (GWEN_StringList_Count(win->stringList)==0) GWEN_StringList_AppendString(win->stringList, "", 0, 1); GWEN_Widget_SetEventHandler(w, GWEN_DropDownBox_EventHandler); ww=GWEN_Widget_GetWidth(w); wh=GWEN_Widget_GetHeight(w); wx=wy=0; if (flags & GWEN_WIDGET_FLAGS_BORDER) { wx++; ww-=2; if (wh>1) { wy++; wh-=2; } } se=GWEN_StringList_FirstEntry(sl); if (se) p=GWEN_StringListEntry_Data(se); else p=""; win->wEdit=GWEN_EditBox_new(w, GWEN_WIDGET_FLAGS_DEFAULT | ((flags & GWEN_DROPDOWNBOX_FLAGS_EDIT) ?GWEN_EDITBOX_FLAGS_EDIT:0), "DropDownBoxEdit", p, wx, wy, ww-4, wh, ww-4); win->wButton=GWEN_Button_new(w, GWEN_WIDGET_FLAGS_DEFAULT | GWEN_WIDGET_FLAGS_BORDER | GWEN_WIDGET_FLAGS_HIGHLIGHT, "DropDownBoxButton", "Y", 0, ww-3, wy, 3, 1); /* subscribe to key events for the button */ GWEN_Widget_Subscribe(win->wButton, GWEN_EventType_Key, w); GWEN_Widget_Subscribe(win->wEdit, GWEN_EventType_Key, w); return w; } void GWEN_DropDownBox_freeData(void *bp, void *p) { GWEN_DROPDOWNBOX *win; win=(GWEN_DROPDOWNBOX*)p; GWEN_StringList_free(win->stringList); GWEN_FREE_OBJECT(win); } GWEN_UI_RESULT GWEN_DropDownBox_EventHandler(GWEN_WIDGET *w, GWEN_EVENT *e) { GWEN_DROPDOWNBOX *win; assert(w); win=GWEN_INHERIT_GETDATA(GWEN_WIDGET, GWEN_DROPDOWNBOX, w); assert(win); assert(e); switch(GWEN_Event_GetType(e)) { case GWEN_EventType_Draw: DBG_INFO(0, "Event: Draw(%s)", GWEN_Widget_GetName(w)); win->previousHandler(w, e); return GWEN_UIResult_Handled; case GWEN_EventType_Refresh: DBG_INFO(0, "Event: Refresh(%s)", GWEN_Widget_GetName(w)); break; case GWEN_EventType_Update: DBG_INFO(0, "Event: Update(%s)", GWEN_Widget_GetName(w)); GWEN_Widget_Refresh(w); return win->previousHandler(w, e); case GWEN_EventType_Key: { int key; key=GWEN_EventKey_GetKey(e); if (GWEN_Event_DueToSubscription(e)) { DBG_NOTICE(0, "Informed due to subscription"); if (GWEN_Event_GetRecipient(e)==win->wButton || GWEN_Event_GetRecipient(e)==win->wEdit) { /* key event for the button */ if (key==13) { /* open drop down list */ GWEN_DropDownBox_ShowList(w); } } return GWEN_UIResult_Handled; } else { DBG_NOTICE(0, "Event: Key(%s)", GWEN_Widget_GetName(w)); if (key==13 || key==32) { GWEN_EVENT *newE; newE=GWEN_EventKey_new(key); assert(newE); if (GWEN_Widget_SendEvent(win->wButton, w, newE)) { DBG_DEBUG(0, "Could not send event to button"); GWEN_Event_free(newE); } return GWEN_UIResult_Handled; } return win->previousHandler(w, e); } } case GWEN_EventType_SetText: { const char *t; int pos; win->previousHandler(w, e); t=GWEN_EventSetText_GetText(e); pos=-1; if (t) { GWEN_STRINGLISTENTRY *se; int i = 0; se=GWEN_StringList_FirstEntry(win->stringList); while(se) { const char *p; p=GWEN_StringListEntry_Data(se); if (p) { if (strcasecmp(p, t)==0) { pos=i; } } i++; se=GWEN_StringListEntry_Next(se); } } /* while */ if (pos!=-1) { GWEN_EVENT *newE; free(win->chosenText); win->chosenText=0; win->chosenText=strdup(t); DBG_NOTICE(0, "Setting text on edit field to [%s]", t); GWEN_Widget_SetText(win->wEdit, t, GWEN_EventSetText_GetMode(e)); newE=GWEN_EventChosen_new(t, 0, 0); assert(newE); if (GWEN_Widget_SendEvent(w, w, newE)) { DBG_DEBUG(0, "Could not send event to button"); GWEN_Event_free(newE); } } return GWEN_UIResult_Handled; } case GWEN_EventType_SetColour: { GWEN_WIDGET_COLOUR col; DBG_INFO(0, "Event: SetColour(%s)", GWEN_Widget_GetName(w)); col=GWEN_EventSetColour_GetColour(e); if (!(GWEN_Widget_GetState(w) & GWEN_WIDGET_STATE_HIGHLIGHT)) { win->previousHandler(w, e); DBG_NOTICE(0, "Setting colour: %d", col); GWEN_Widget_SetColour(win->wButton, col); GWEN_Widget_SetColour(win->wEdit, col); if (GWEN_Widget_Update(w)) return GWEN_UIResult_Error; } } default: break; } /* switch */ return win->previousHandler(w, e); } void GWEN_DropDownBox_ShowList(GWEN_WIDGET *w){ GWEN_WIDGET *wList; GWEN_WIDGET *wScroller; int x, y, ww, wh; GWEN_DROPDOWNBOX *win; GWEN_BUFFER *buf; GWEN_STRINGLISTENTRY *se; int first; GWEN_TYPE_UINT32 scrollerFlags; GWEN_WIDGET *prevFocus; int focusLost; int i; int pos; assert(w); win=GWEN_INHERIT_GETDATA(GWEN_WIDGET, GWEN_DROPDOWNBOX, w); assert(win); prevFocus=GWEN_UI_GetFocusWidget(); ww=GWEN_Widget_GetWidth(win->wEdit); x=GWEN_Widget_GetPhysicalX(w); wh=GWEN_StringList_Count(win->stringList)+2; if (wh>GWEN_UI_GetLines()) wh=GWEN_UI_GetLines(); y=GWEN_Widget_GetPhysicalY(win->wEdit)+1; DBG_NOTICE(0, "ZZZ: Dimensions (%d/%d, %d/%d)", x, y, ww, wh); if (y+wh>GWEN_UI_GetLines()) { wh=5; DBG_NOTICE(0, "ZZZ: Adjusted (%d/%d, %d/%d)", x, y, ww, wh); } if (y+wh>GWEN_UI_GetLines()) { /* bottom of list is too low, can we adjust y ? */ if (y>wh) { /* yes, we can, so do it */ DBG_NOTICE(0, "ZZZ: Adjusted (%d/%d, %d/%d)", x, y, ww, wh); y-=(y-wh); } else { /* nope, we can't, is it enough to shorten the height ? */ wh=GWEN_UI_GetLines()-y; if (wh<5 && y>=5) { /* height is too small, adjust Y as well */ y-=5; wh=5; DBG_NOTICE(0, "ZZZ: Adjusted (%d/%d, %d/%d)", x, y, ww, wh); } else { /* very small screen, use all we can */ y=0; wh=GWEN_UI_GetLines(); DBG_NOTICE(0, "ZZZ: Adjusted (%d/%d, %d/%d)", x, y, ww, wh); } } } DBG_NOTICE(0, "ZZZ: Dimensions of list: %d/%d, %d/%d", x, y, ww, wh); buf=GWEN_Buffer_new(0, 256, 0, 1); GWEN_Buffer_AppendString(buf, ""); se=GWEN_StringList_FirstEntry(win->stringList); first=1; i=0; pos=0; while(se) { const char *p; p=GWEN_StringListEntry_Data(se); if (p) { if (win->chosenText) { DBG_NOTICE(0, "VVV: Checking %s against %s (pos=%d)", p, win->chosenText, pos); if (strcasecmp(p, win->chosenText)==0) { pos=i; DBG_NOTICE(0, "VVV: Found matching text (pos=%d)", pos); } } if (!first) GWEN_Buffer_AppendString(buf, "
"); GWEN_Buffer_AppendString(buf, p); } first=0; i++; se=GWEN_StringListEntry_Next(se); } /* while */ GWEN_Buffer_AppendString(buf, ""); if (GWEN_StringList_Count(win->stringList)>wh-2) scrollerFlags=GWEN_SCROLLWIN_FLAGS_VSLIDER; else scrollerFlags=0; wScroller=GWEN_ScrollWidget_new(0, GWEN_WIDGET_FLAGS_DEFAULT | GWEN_WIDGET_FLAGS_BORDER | scrollerFlags, "DropDownScroller", x, y, ww, wh); wList=GWEN_TextWidget_new(GWEN_ScrollWidget_GetViewPort(wScroller), GWEN_WIDGET_FLAGS_DEFAULT | GWEN_TEXTWIDGET_FLAGS_LINEMODE | GWEN_TEXTWIDGET_FLAGS_HIGHLIGHT, "DropDownList", GWEN_Buffer_GetStart(buf), 0, 0, 0, 0); GWEN_Buffer_free(buf); GWEN_Widget_Subscribe(wList, GWEN_EventType_Focus, wScroller); GWEN_Widget_Redraw(wScroller); GWEN_TextWidget_SetPos(wList, pos); GWEN_TextWidget_EnsureVisible(wList, 0, pos, GWEN_Widget_GetWidth(wList), 1); GWEN_Widget_SetFocus(wList); focusLost=0; for (;;) { GWEN_EVENT *e; DBG_NOTICE(0, "Loop"); e=GWEN_UI_GetNextEvent(); if (!e) { break; } if (GWEN_Event_GetType(e)==GWEN_EventType_Chosen) { const char *p; p=GWEN_EventChosen_GetText(e); free(win->chosenText); win->chosenText=0; if (p) { win->chosenText=strdup(p); } else win->chosenText=0; GWEN_Widget_Close(wScroller); GWEN_Event_free(e); GWEN_UI_Flush(); DBG_NOTICE(0, "Stopping this."); break; } else if (GWEN_Event_GetType(e)==GWEN_EventType_Focus) { if (GWEN_EventFocus_GetFocusEventType(e)==GWEN_EventFocusType_Lost){ DBG_NOTICE(0, "Focus lost"); GWEN_Widget_Close(wScroller); GWEN_UI_Flush(); free(win->chosenText); win->chosenText=0; focusLost=1; break; } else { DBG_NOTICE(0, "Focus won."); } } else { GWEN_UI_RESULT res; res=GWEN_UI_DispatchEvent(e); GWEN_Event_free(e); } } if (win->chosenText && !focusLost) { GWEN_Widget_SetText(w, win->chosenText, // DEBUG GWEN_EventSetTextMode_Replace); } DBG_NOTICE(0, "Loop end"); GWEN_Widget_free(wScroller); if (prevFocus && !focusLost) GWEN_Widget_SetFocus(prevFocus); } GWEN_BUFFER *GWEN_DropDownBox_GetText(const GWEN_WIDGET *w, int asAscii){ GWEN_DROPDOWNBOX *win; assert(w); win=GWEN_INHERIT_GETDATA(GWEN_WIDGET, GWEN_DROPDOWNBOX, w); assert(win); return GWEN_EditBox_GetText(win->wEdit, asAscii); } int GWEN_DropDownBox_AddChoice(GWEN_WIDGET *w, const char *s) { GWEN_DROPDOWNBOX *win; assert(w); win=GWEN_INHERIT_GETDATA(GWEN_WIDGET, GWEN_DROPDOWNBOX, w); assert(win); return !GWEN_StringList_AppendString(win->stringList, s, 0, 1); }