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135 lines
4.2 KiB
135 lines
4.2 KiB
/* $Id: gui_list.c,v 1.13 2014/02/12 21:21:07 steffen Exp $ */
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/***************************************************************************
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* gui_list.c
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*
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* Copyright (C) 2013 Steffen Pohle
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* steffen@gulpe.de
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***************************************************************************
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* basic windows functions
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***************************************************************************/
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/*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* main.c is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "osmroute.h"
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#include "draw.h"
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#include "gui.h"
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#include "system.h"
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#define GUI_ARROW_WIDTH 16
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#define GUI_ARROW_HEIGHT 16
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/****************************************************************************
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* list
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*/
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void gui_list_draw (GUIItem *item) {
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struct line_style ls;
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int max, i, x, y, j;
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GUIList *list = NULL;
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if (item == NULL) return;
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else list = (GUIList *) item->data;
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ls.width = 1.0;
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if (currentwin->focus == item)
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ls.c = ls.borderc = color[COLOR_white][3];
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else
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ls.c = ls.borderc = color[COLOR_white][2];
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gfx_draw_line (currentwin->screen, item->x, item->y, item->x+item->w, item->y, ls);
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gfx_draw_line (currentwin->screen, item->x+item->w, item->y, item->x+item->w, item->y+item->h, ls);
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gfx_draw_line (currentwin->screen, item->x+item->w, item->y+item->h, item->x, item->y+item->h, ls);
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gfx_draw_line (currentwin->screen, item->x, item->y+item->h, item->x, item->y, ls);
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/* find last max */
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max = 0;
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if (list->data == NULL) max = 0;
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else for (max = 0; list->data[max] != NULL; max++);
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/* range to display */
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i = max - item->h/16;
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if (i < list->vs) list->vs = i;
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if (list->vs < 0) list->vs = 0;
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for (i = list->vs; i < (list->vs + item->h/16) && i < max; i++) {
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if (i == list->selected) gfx_draw_text (currentwin->screen, item->x + 5, item->y + 5 + 16 * (i - list->vs), list->data[i], &color[COLOR_red][2]);
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else gfx_draw_text (currentwin->screen, item->x + 5, item->y + 5 + 16 * (i - list->vs), list->data[i], &color[COLOR_white][3]);
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}
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ls.c = ls.borderc = color[COLOR_white][3];
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for (i = -1; i < 2; i += 2) {
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if (i < 0) y = item->y + item->h;
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else y = item->y;
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x = item->x + item->w;
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for (j = 0; j <= GUI_ARROW_WIDTH/2; j++) {
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gfx_draw_line (currentwin->screen, x - GUI_ARROW_WIDTH/2, y, x-j, y + i*GUI_ARROW_HEIGHT, ls);
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gfx_draw_line (currentwin->screen, x - GUI_ARROW_WIDTH/2 -j, y+ i*GUI_ARROW_HEIGHT, x-GUI_ARROW_WIDTH/2, y, ls);
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}
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}
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};
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/*
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* event handling
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*/
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int gui_list_event (GUIItem *item, GUIEvent *event) {
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int x = event->guiwin_mpos.x - item->x;
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int y = event->guiwin_mpos.y - item->y;
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int i;
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GUIList *list = NULL;
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static GUIItem *olditem = NULL;
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if (item == NULL) return 0;
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else list = (GUIList *) item->data;
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/* set focus */
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if (event->event == EGUI_MOUSEPRESSED) {
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olditem = item;
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}
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else if (event->event == EGUI_MOUSERELEASED && olditem == item &&
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x >= 0 && y >= 0 && x <= item->w && y <= item->h) {
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gui_set_focus (item);
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if (y <= GUI_ARROW_HEIGHT && x >= item->w - GUI_ARROW_WIDTH) list->vs--;
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else if (y >= item->h - GUI_ARROW_HEIGHT && x >= item->w - GUI_ARROW_WIDTH) list->vs++;
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else { /* select entry */
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i = (y-5)/16 + list->vs;
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list->selected = i;
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if (list->callback_selectitem) list->callback_selectitem (i);
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}
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}
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currentwin->screen_changed = 1;
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draw ();
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return 1;
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};
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GUIItem *gui_list_new (int x, int y, int w, int h) {
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GUIItem *item = (GUIItem *) ml_malloc (sizeof (GUIList) + sizeof (GUIItem) + POINTERALIGNMENT);
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GUIList *list = (GUIList *) item->data;
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item->type = GUI_LIST;
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item->x = x;
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item->y = y;
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item->w = w;
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item->h = h;
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list->selected = -1;
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list->vs = 0;
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list->callback_selectitem = NULL;
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list->data = NULL;
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return item;
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};
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