429 lines
11 KiB
C++
429 lines
11 KiB
C++
/*
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* Portions of this file are copyright Rebirth contributors and licensed as
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* described in COPYING.txt.
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* Portions of this file are copyright Parallax Software and licensed
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* according to the Parallax license below.
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* See COPYING.txt for license details.
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THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
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SOFTWARE CORPORATION ("PARALLAX"). PARALLAX, IN DISTRIBUTING THE CODE TO
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END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
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ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
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IN USING, DISPLAYING, AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
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SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
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FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
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CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES. THE END-USER UNDERSTANDS
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AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
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COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
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*/
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#include <stdlib.h>
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#include "maths.h"
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#include "pstypes.h"
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#include "event.h"
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#include "gr.h"
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#include "ui.h"
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#include "mouse.h"
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#include "key.h"
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#include "timer.h"
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static void gr_draw_sunken_border( short x1, short y1, short x2, short y2 );
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void ui_draw_listbox( UI_DIALOG *dlg, UI_GADGET_LISTBOX * listbox )
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{
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int i, x, y, stop;
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int w, h, aw;
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//if (listbox->current_item<0)
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// listbox->current_item=0;
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//if (listbox->current_item>=listbox->num_items)
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// listbox->current_item = listbox->num_items-1;
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//if (listbox->first_item<0)
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// listbox->first_item=0;
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//if (listbox->first_item>(listbox->num_items-listbox->num_items_displayed))
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// listbox->first_item=(listbox->num_items-listbox->num_items_displayed);
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#if 0 //ndef OGL
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if ((listbox->status!=1) && !listbox->moved )
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return;
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#endif
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gr_set_current_canvas( listbox->canvas );
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w = listbox->width;
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h = listbox->height;
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gr_setcolor(CBLACK);
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gr_rect( 0, 0, w-1, h-1);
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gr_draw_sunken_border( -2, -2, w+listbox->scrollbar->width+4, h+1);
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stop = listbox->first_item+listbox->num_items_displayed;
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if (stop>listbox->num_items) stop = listbox->num_items;
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listbox->status = 0;
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x = y = 0;
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for (i= listbox->first_item; i< stop; i++ )
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{
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if (i==listbox->current_item)
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gr_setcolor( CGREY );
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else
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gr_setcolor( CBLACK );
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gr_rect(x, y, listbox->width - 1, y + h - 1);
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if (i !=listbox->current_item)
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{
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if ((listbox->current_item == -1) && (dlg->keyboard_focus_gadget == (UI_GADGET *)listbox) && (i == listbox->first_item) )
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gr_set_fontcolor( CRED, -1 );
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else
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gr_set_fontcolor( CWHITE, -1 );
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}
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else
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{
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if (dlg->keyboard_focus_gadget == (UI_GADGET *)listbox)
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gr_set_fontcolor( CRED, -1 );
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else
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gr_set_fontcolor( CBLACK, -1 );
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}
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gr_string(x + 2, y, listbox->list[i]);
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gr_get_string_size(listbox->list[i], &w, &h, &aw);
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y += h;
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}
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if (stop < listbox->num_items_displayed-1 )
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{
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gr_setcolor(CBLACK);
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gr_rect( x, y, listbox->width-1, listbox->height-1 );
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}
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//gr_ubox( -1, -1, listbox->width, listbox->height);
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}
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static void gr_draw_sunken_border( short x1, short y1, short x2, short y2 )
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{
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gr_setcolor( CGREY );
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Hline( x1-1, x2+1, y1-1);
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Vline( y1-1, y2+1, x1-1);
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gr_setcolor( CBRIGHT );
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Hline( x1-1, x2+1, y2+1);
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Vline( y1, y2+1, x2+1);
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}
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UI_GADGET_LISTBOX * ui_add_gadget_listbox(UI_DIALOG *dlg, short x, short y, short w, short h, short numitems, char **list)
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{
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int tw, th, taw, i;
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UI_GADGET_LISTBOX * listbox;
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gr_get_string_size("*", &tw, &th, &taw );
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i = h / th;
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h = i * th;
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listbox = (UI_GADGET_LISTBOX *)ui_gadget_add( dlg, 2, x, y, x+w-1, y+h-1 );
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listbox->list = list;
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listbox->width = w;
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listbox->height = h;
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listbox->num_items = numitems;
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listbox->num_items_displayed = i;
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listbox->first_item = 0;
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listbox->current_item = -1;
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listbox->last_scrolled = 0;
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listbox->textheight = th;
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listbox->dragging = 0;
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listbox->selected_item = -1;
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listbox->moved = 1;
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listbox->scrollbar = ui_add_gadget_scrollbar( dlg, x+w+3, y, 0, h, 0, numitems-i, 0, i );
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listbox->scrollbar->parent = (UI_GADGET *)listbox;
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return listbox;
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}
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int ui_listbox_do( UI_DIALOG *dlg, UI_GADGET_LISTBOX * listbox, d_event *event )
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{
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int mitem, oldfakepos, kf;
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int keypress = 0;
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int rval = 0;
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if (event->type == EVENT_WINDOW_DRAW)
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{
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ui_draw_listbox( dlg, listbox );
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return 0;
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}
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if (event->type == EVENT_KEY_COMMAND)
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keypress = event_key_get(event);
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listbox->selected_item = -1;
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listbox->moved = 0;
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if (listbox->num_items < 1 ) {
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listbox->current_item = -1;
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listbox->first_item = 0;
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listbox->old_current_item = listbox->current_item;
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listbox->old_first_item = listbox->first_item;
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//ui_draw_listbox( dlg, listbox );
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if (dlg->keyboard_focus_gadget == (UI_GADGET *)listbox)
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{
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dlg->keyboard_focus_gadget = ui_gadget_get_next((UI_GADGET *)listbox);
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}
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return rval;
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}
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listbox->old_current_item = listbox->current_item;
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listbox->old_first_item = listbox->first_item;
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if (GADGET_PRESSED(listbox->scrollbar))
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{
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listbox->moved = 1;
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listbox->first_item = listbox->scrollbar->position;
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if (listbox->current_item<listbox->first_item)
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listbox->current_item = listbox->first_item;
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if (listbox->current_item>(listbox->first_item+listbox->num_items_displayed-1))
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listbox->current_item = listbox->first_item + listbox->num_items_displayed-1;
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}
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if (B1_JUST_RELEASED)
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listbox->dragging = 0;
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if (B1_JUST_PRESSED && ui_mouse_on_gadget( (UI_GADGET *)listbox ))
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{
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listbox->dragging = 1;
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rval = 1;
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}
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if ( dlg->keyboard_focus_gadget==(UI_GADGET *)listbox )
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{
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if (keypress==KEY_ENTER) {
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listbox->selected_item = listbox->current_item;
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rval = 1;
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}
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kf = 0;
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switch(keypress)
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{
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case (KEY_UP):
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listbox->current_item--;
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kf = 1;
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break;
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case (KEY_DOWN):
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listbox->current_item++;
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kf = 1;
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break;
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case (KEY_HOME):
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listbox->current_item=0;
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kf = 1;
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break;
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case (KEY_END):
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listbox->current_item=listbox->num_items-1;
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kf = 1;
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break;
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case (KEY_PAGEUP):
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listbox->current_item -= listbox->num_items_displayed;
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kf = 1;
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break;
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case (KEY_PAGEDOWN):
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listbox->current_item += listbox->num_items_displayed;
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kf = 1;
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break;
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}
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if (kf==1)
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{
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listbox->moved = 1;
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rval = 1;
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if (listbox->current_item<0)
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listbox->current_item=0;
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if (listbox->current_item>=listbox->num_items)
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listbox->current_item = listbox->num_items-1;
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if (listbox->current_item<listbox->first_item)
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listbox->first_item = listbox->current_item;
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if (listbox->current_item>=(listbox->first_item+listbox->num_items_displayed))
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listbox->first_item = listbox->current_item-listbox->num_items_displayed+1;
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if (listbox->num_items <= listbox->num_items_displayed )
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listbox->first_item = 0;
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else
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{
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oldfakepos = listbox->scrollbar->position;
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listbox->scrollbar->position = listbox->first_item;
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listbox->scrollbar->fake_position = listbox->scrollbar->position-listbox->scrollbar->start;
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listbox->scrollbar->fake_position *= listbox->scrollbar->height-listbox->scrollbar->fake_size;
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listbox->scrollbar->fake_position /= (listbox->scrollbar->stop-listbox->scrollbar->start);
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if (listbox->scrollbar->fake_position<0)
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{
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listbox->scrollbar->fake_position = 0;
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}
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if (listbox->scrollbar->fake_position > (listbox->scrollbar->height-listbox->scrollbar->fake_size))
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{
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listbox->scrollbar->fake_position = (listbox->scrollbar->height-listbox->scrollbar->fake_size);
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}
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if (oldfakepos != listbox->scrollbar->position )
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listbox->scrollbar->status = 1;
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}
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}
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}
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if (selected_gadget==(UI_GADGET *)listbox)
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{
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if (listbox->dragging)
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{
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int x, y, z;
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mouse_get_pos(&x, &y, &z);
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if (y < listbox->y1)
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mitem = -1;
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else
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mitem = (y - listbox->y1)/listbox->textheight;
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if ((mitem < 0) && (timer_query() > listbox->last_scrolled + 1))
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{
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listbox->current_item--;
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listbox->last_scrolled = timer_query();
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listbox->moved = 1;
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}
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if ((mitem >= listbox->num_items_displayed) &&
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(timer_query() > listbox->last_scrolled + 1))
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{
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listbox->current_item++;
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listbox->last_scrolled = timer_query();
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listbox->moved = 1;
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}
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if ((mitem>=0) && (mitem<listbox->num_items_displayed))
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{
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listbox->current_item = mitem+listbox->first_item;
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listbox->moved=1;
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}
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if (listbox->current_item <0 )
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listbox->current_item = 0;
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if (listbox->current_item >= listbox->num_items )
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listbox->current_item = listbox->num_items-1;
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if (listbox->current_item<listbox->first_item)
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listbox->first_item = listbox->current_item;
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if (listbox->current_item>=(listbox->first_item+listbox->num_items_displayed))
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listbox->first_item = listbox->current_item-listbox->num_items_displayed+1;
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if (listbox->num_items <= listbox->num_items_displayed )
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listbox->first_item = 0;
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else
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{
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oldfakepos = listbox->scrollbar->position;
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listbox->scrollbar->position = listbox->first_item;
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listbox->scrollbar->fake_position = listbox->scrollbar->position-listbox->scrollbar->start;
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listbox->scrollbar->fake_position *= listbox->scrollbar->height-listbox->scrollbar->fake_size;
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listbox->scrollbar->fake_position /= (listbox->scrollbar->stop-listbox->scrollbar->start);
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if (listbox->scrollbar->fake_position<0)
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{
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listbox->scrollbar->fake_position = 0;
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}
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if (listbox->scrollbar->fake_position > (listbox->scrollbar->height-listbox->scrollbar->fake_size))
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{
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listbox->scrollbar->fake_position = (listbox->scrollbar->height-listbox->scrollbar->fake_size);
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}
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if (oldfakepos != listbox->scrollbar->position )
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listbox->scrollbar->status = 1;
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}
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}
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if (B1_DOUBLE_CLICKED )
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{
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listbox->selected_item = listbox->current_item;
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rval = 1;
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}
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}
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if (listbox->moved || (listbox->selected_item > 0))
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{
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ui_gadget_send_event(dlg, (listbox->selected_item > 0) ? EVENT_UI_LISTBOX_SELECTED : EVENT_UI_LISTBOX_MOVED, (UI_GADGET *)listbox);
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rval = 1;
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}
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return rval;
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}
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void ui_listbox_change(UI_DIALOG *dlg, UI_GADGET_LISTBOX *listbox, short numitems, char **list)
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{
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int stop, start;
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UI_GADGET_SCROLLBAR * scrollbar;
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dlg = dlg;
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listbox->list = list;
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listbox->num_items = numitems;
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listbox->first_item = 0;
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listbox->current_item = -1;
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listbox->last_scrolled = timer_query();
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listbox->dragging = 0;
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listbox->selected_item = -1;
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listbox->status = 1;
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listbox->first_item = 0;
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listbox->current_item = listbox->old_current_item = 0;
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listbox->moved = 0;
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scrollbar = listbox->scrollbar;
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start=0;
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stop= numitems - listbox->num_items_displayed;
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if (stop < start) stop = start;
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scrollbar->horz = 0;
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scrollbar->start = start;
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scrollbar->stop = stop;
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scrollbar->fake_length = scrollbar->height;
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scrollbar->fake_position = 0;
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if (stop!=start)
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scrollbar->fake_size = (listbox->num_items_displayed * scrollbar->height)/(stop-start+1+listbox->num_items_displayed);
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else
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scrollbar->fake_size = scrollbar->height;
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if (scrollbar->fake_size < 7) scrollbar->fake_size = 7;
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scrollbar->dragging = 0;
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scrollbar->moved=0;
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scrollbar->status=1;
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}
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