/*************************************************************************** * __________ __ ___. * Open \______ \ ____ ____ | | _\_ |__ _______ ___ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ * \/ \/ \/ \/ \/ * $Id$ * * Copyright (C) Markus Braun (2002) * * All files in this archive are subject to the GNU General Public License. * See the file COPYING in the source tree root for full license agreement. * * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY * KIND, either express or implied. * ****************************************************************************/ #include "scrollbar.h" #ifdef HAVE_LCD_BITMAP #include "config.h" #include "limits.h" #include "bmp.h" void gui_scrollbar_draw(struct screen * screen, int x, int y, int width, int height, int items, int min_shown, int max_shown, unsigned flags) { int inner_x, inner_y, inner_wd, inner_ht, inner_len; int min, max, range; int start, size; #ifdef HAVE_LCD_COLOR int infill; #endif /* min should be min */ if(min_shown < max_shown) { min = min_shown; max = max_shown; } else { min = max_shown; max = min_shown; } /* limit min and max */ if(min < 0) min = 0; if(min > items) min = items; if(max < 0) max = 0; if(max > items) max = items; range = max - min; inner_x = x + 1; inner_y = y + 1; inner_wd = width - 2; inner_ht = height - 2; if (flags & HORIZONTAL) inner_len = inner_wd; else inner_len = inner_ht; /* avoid overflows */ while (items > (INT_MAX / inner_len)) { items >>= 1; range >>= 1; } /* calc start and end of the knob */ if (items > 0 && items > range) { size = inner_len * range / items; if (size == 0) { /* width of knob is null */ size = 1; start = (inner_len - 1) * min / items; } else { start = (inner_len - size) * min / (items - range); } } else { /* if null draw full bar */ size = inner_len; start = 0; } /* draw box */ #ifdef HAVE_LCD_COLOR /* must avoid corners if case of (flags & FOREGROUND) */ screen->hline(inner_x, x + inner_wd, y); screen->hline(inner_x, x + inner_wd, y + height - 1); screen->vline(x, inner_y, y + inner_ht); screen->vline(x + width - 1, inner_y, y + inner_ht); #else screen->drawrect(x, y, width, height); #endif screen->set_drawmode(DRMODE_SOLID | DRMODE_INVERSEVID); #ifdef HAVE_LCD_COLOR infill = flags & (screen->depth > 1 ? INNER_FILL_MASK : INNER_FILL); if (!(flags & FOREGROUND)) { #endif /* clear corner pixels */ screen->drawpixel(x, y); screen->drawpixel(x + width - 1, y); screen->drawpixel(x, y + height - 1); screen->drawpixel(x + width - 1, y + height - 1); #ifdef HAVE_LCD_COLOR if (infill != INNER_BGFILL) infill = INNER_FILL; } if (infill == INNER_FILL) #endif { /* clear pixels in progress bar */ screen->fillrect(inner_x, inner_y, inner_wd, inner_ht); } screen->set_drawmode(DRMODE_SOLID); #ifdef HAVE_LCD_COLOR if (infill == INNER_BGFILL) { /* fill inner area with current background color */ unsigned fg = screen->get_foreground(); screen->set_foreground(screen->get_background()); screen->fillrect(inner_x, inner_y, inner_wd, inner_ht); screen->set_foreground(fg); } #endif if (flags & HORIZONTAL) { inner_x += start; inner_wd = size; } else { inner_y += start; inner_ht = size; } screen->fillrect(inner_x, inner_y, inner_wd, inner_ht); } void gui_bitmap_scrollbar_draw(struct screen * screen, struct bitmap bm, int x, int y, int width, int height, int items, int min_shown, int max_shown, unsigned flags) { int min; int max; int inner_len; int start; int size; screen->set_drawmode(DRMODE_SOLID|DRMODE_INVERSEVID); /* clear pixels in progress bar */ screen->fillrect(x, y, width, height); /* min should be min */ if(min_shown < max_shown) { min = min_shown; max = max_shown; } else { min = max_shown; max = min_shown; } /* limit min and max */ if(min < 0) min = 0; if(min > items) min = items; if(max < 0) max = 0; if(max > items) max = items; if (flags & HORIZONTAL) inner_len = width; else inner_len = height; /* avoid overflows */ while (items > (INT_MAX / inner_len)) { items >>= 1; min >>= 1; max >>= 1; } /* calc start and end of the knob */ if (items > 0 && items > (max - min)) { size = inner_len * (max - min) / items; if (size == 0) { /* width of knob is null */ size = 1; start = (inner_len - 1) * min / items; } else { start = (inner_len - size) * min / (items - (max - min)); } } else { /* if null draw full bar */ size = inner_len; start = 0; } screen->set_drawmode(DRMODE_SOLID); if (flags & HORIZONTAL) { #if LCD_DEPTH > 1 if (bm.format == FORMAT_MONO) #endif screen->mono_bitmap_part(bm.data, 0, 0, bm.width, x + start, y, size, height); #if LCD_DEPTH > 1 else screen->transparent_bitmap_part((fb_data *)bm.data, 0, 0, bm.width, x + start, y, size, height); #endif } else { #if LCD_DEPTH > 1 if (bm.format == FORMAT_MONO) #endif screen->mono_bitmap_part(bm.data, 0, 0, bm.width, x, y + start, width, size); #if LCD_DEPTH > 1 else screen->transparent_bitmap_part((fb_data *)bm.data, 0, 0, bm.width, x, y + start, width, size); #endif } } #endif /* HAVE_LCD_BITMAP */