992cbf20a0
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@7395 a1c6a512-1295-4272-9138-f99709370657
126 lines
3.3 KiB
C
126 lines
3.3 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2002 Markus Braun
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include <lcd.h>
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#include <limits.h>
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#include "widgets.h"
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#ifdef HAVE_LCD_BITMAP
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/*
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* Print a scroll bar
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*/
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void scrollbar(int x, int y, int width, int height, int items, int min_shown,
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int max_shown, int orientation)
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{
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int min;
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int max;
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int inner_len;
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int start;
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int size;
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/* draw box */
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lcd_drawrect(x, y, width, height);
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lcd_set_drawmode(DRMODE_SOLID|DRMODE_INVERSEVID);
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/* clear edge pixels */
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lcd_drawpixel(x, y);
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lcd_drawpixel((x + width - 1), y);
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lcd_drawpixel(x, (y + height - 1));
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lcd_drawpixel((x + width - 1), (y + height - 1));
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/* clear pixels in progress bar */
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lcd_fillrect(x + 1, y + 1, width - 2, height - 2);
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/* min should be min */
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if(min_shown < max_shown) {
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min = min_shown;
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max = max_shown;
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}
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else {
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min = max_shown;
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max = min_shown;
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}
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/* limit min and max */
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if(min < 0)
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min = 0;
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if(min > items)
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min = items;
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if(max < 0)
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max = 0;
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if(max > items)
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max = items;
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if (orientation == VERTICAL)
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inner_len = height - 2;
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else
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inner_len = width - 2;
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/* avoid overflows */
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while (items > (INT_MAX / inner_len)) {
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items >>= 1;
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min >>= 1;
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max >>= 1;
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}
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/* calc start and end of the knob */
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if (items > 0 && items > (max - min)) {
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size = inner_len * (max - min) / items;
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if (size == 0) { /* width of knob is null */
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size = 1;
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start = (inner_len - 1) * min / items;
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} else {
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start = (inner_len - size) * min / (items - (max - min));
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}
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} else { /* if null draw full bar */
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size = inner_len;
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start = 0;
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}
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lcd_set_drawmode(DRMODE_SOLID);
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if(orientation == VERTICAL)
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lcd_fillrect(x + 1, y + start + 1, width - 2, size);
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else
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lcd_fillrect(x + start + 1, y + 1, size, height - 2);
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}
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/*
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* Print a checkbox
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*/
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void checkbox(int x, int y, int width, int height, bool checked)
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{
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/* draw box */
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lcd_drawrect(x, y, width, height);
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/* clear inner area */
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lcd_set_drawmode(DRMODE_SOLID|DRMODE_INVERSEVID);
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lcd_fillrect(x + 1, y + 1, width - 2, height - 2);
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lcd_set_drawmode(DRMODE_SOLID);
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if (checked){
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lcd_drawline(x + 2, y + 2, x + width - 2 - 1 , y + height - 2 - 1);
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lcd_drawline(x + 2, y + height - 2 - 1, x + width - 2 - 1, y + 2);
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}
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}
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#endif
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