a092b9ce92
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22978 a1c6a512-1295-4272-9138-f99709370657
454 lines
16 KiB
C
454 lines
16 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) 2007 by Jonathan Gordon
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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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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/* This file contains the code to draw the list widget on BITMAP LCDs. */
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#include "config.h"
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#include "lcd.h"
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#include "font.h"
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#include "button.h"
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#include "sprintf.h"
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#include "string.h"
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#include "settings.h"
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#include "kernel.h"
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#include "system.h"
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#include "file.h"
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#include "action.h"
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#include "screen_access.h"
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#include "list.h"
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#include "scrollbar.h"
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#include "lang.h"
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#include "sound.h"
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#include "misc.h"
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#include "viewport.h"
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#define ICON_PADDING 1
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/* these are static to make scrolling work */
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static struct viewport list_text[NB_SCREENS], title_text[NB_SCREENS];
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int gui_list_get_item_offset(struct gui_synclist * gui_list, int item_width,
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int text_pos, struct screen * display,
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struct viewport *vp);
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bool list_display_title(struct gui_synclist *list, enum screen_type screen);
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/* Draw the list...
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internal screen layout:
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-----------------
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|TI| title | TI is title icon
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-----------------
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| | | |
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|S|I| | S - scrollbar
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| | | items | I - icons
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------------------
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Note: This image is flipped horizontally when the language is a
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right-to-left one (Hebrew, Arabic)
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*/
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static bool draw_title(struct screen *display, struct gui_synclist *list)
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{
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const int screen = display->screen_type;
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int style = STYLE_DEFAULT;
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struct viewport *title_text_vp = &title_text[screen];
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display->scroll_stop(title_text_vp);
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if (!list_display_title(list, screen))
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return false;
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*title_text_vp = *(list->parent[screen]);
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title_text_vp->height = font_get(title_text_vp->font)->height;
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if (list->title_icon != Icon_NOICON && global_settings.show_icons)
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{
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struct viewport title_icon = *title_text_vp;
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title_icon.width = get_icon_width(screen) + ICON_PADDING * 2;
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if (VP_IS_RTL(&title_icon))
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{
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title_icon.x = title_text_vp->width - title_icon.width;
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}
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else
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{
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title_icon.x = ICON_PADDING;
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title_text_vp->x += title_icon.width;
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}
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title_text_vp->width -= title_icon.width;
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display->set_viewport(&title_icon);
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screen_put_icon(display, 0, 0, list->title_icon);
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}
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#ifdef HAVE_LCD_COLOR
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if (list->title_color >= 0)
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{
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style |= (STYLE_COLORED|list->title_color);
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}
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#endif
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display->set_viewport(title_text_vp);
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display->puts_scroll_style(0, 0, list->title, style);
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return true;
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}
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void list_draw(struct screen *display, struct gui_synclist *list)
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{
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struct viewport list_icons;
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int start, end, line_height, style, i;
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const int screen = display->screen_type;
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const int list_start_item = list->start_item[screen];
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const int icon_width = get_icon_width(screen) + ICON_PADDING;
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const int scrollbar_in_left = global_settings.scrollbar == SCROLLBAR_LEFT;
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const bool show_cursor = !global_settings.cursor_style &&
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list->show_selection_marker;
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struct viewport *parent = (list->parent[screen]);
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#ifdef HAVE_LCD_COLOR
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unsigned char cur_line = 0;
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#endif
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int item_offset;
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bool show_title;
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struct viewport *list_text_vp = &list_text[screen];
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line_height = font_get(parent->font)->height;
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display->set_viewport(parent);
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display->clear_viewport();
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display->scroll_stop(list_text_vp);
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*list_text_vp = *parent;
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if ((show_title = draw_title(display, list)))
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{
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list_text_vp->y += line_height;
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list_text_vp->height -= line_height;
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}
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start = list_start_item;
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end = start + viewport_get_nb_lines(list_text_vp);
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/* draw the scrollbar if its needed */
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if (global_settings.scrollbar &&
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viewport_get_nb_lines(list_text_vp) < list->nb_items)
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{
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struct viewport vp;
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vp = *list_text_vp;
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vp.width = SCROLLBAR_WIDTH;
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vp.height = line_height * viewport_get_nb_lines(list_text_vp);
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vp.x = parent->x;
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list_text_vp->width -= SCROLLBAR_WIDTH;
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if (scrollbar_in_left)
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list_text_vp->x += SCROLLBAR_WIDTH;
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else
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vp.x += list_text_vp->width;
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display->set_viewport(&vp);
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gui_scrollbar_draw(display, VP_IS_RTL(&vp) ? 1 : 0, 0, SCROLLBAR_WIDTH-1, vp.height,
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list->nb_items, list_start_item, list_start_item + end-start,
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VERTICAL);
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}
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else if (show_title)
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{
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/* shift everything a bit in relation to the title... */
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if (!VP_IS_RTL(list_text_vp) && scrollbar_in_left)
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{
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list_text_vp->width -= SCROLLBAR_WIDTH;
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list_text_vp->x += SCROLLBAR_WIDTH;
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}
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else if (VP_IS_RTL(list_text_vp) && !scrollbar_in_left)
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{
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list_text_vp->width -= SCROLLBAR_WIDTH;
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}
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}
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/* setup icon placement */
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list_icons = *list_text_vp;
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int icon_count = global_settings.show_icons &&
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(list->callback_get_item_icon != NULL) ? 1 : 0;
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if (show_cursor)
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icon_count++;
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if (icon_count)
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{
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list_icons.width = icon_width * icon_count;
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list_text_vp->width -= list_icons.width + ICON_PADDING;
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if (VP_IS_RTL(&list_icons))
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list_icons.x += list_text_vp->width + ICON_PADDING;
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else
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list_text_vp->x += list_icons.width + ICON_PADDING;
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}
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for (i=start; i<end && i<list->nb_items; i++)
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{
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/* do the text */
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unsigned const char *s;
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char entry_buffer[MAX_PATH];
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unsigned char *entry_name;
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int text_pos = 0;
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s = list->callback_get_item_name(i, list->data, entry_buffer,
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sizeof(entry_buffer));
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entry_name = P2STR(s);
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display->set_viewport(list_text_vp);
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style = STYLE_DEFAULT;
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/* position the string at the correct offset place */
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int item_width,h;
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display->getstringsize(entry_name, &item_width, &h);
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item_offset = gui_list_get_item_offset(list, item_width, text_pos,
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display, list_text_vp);
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#ifdef HAVE_LCD_COLOR
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/* if the list has a color callback */
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if (list->callback_get_item_color)
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{
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int color = list->callback_get_item_color(i, list->data);
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/* if color selected */
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if (color >= 0)
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{
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style |= STYLE_COLORED|color;
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}
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}
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#endif
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if(i >= list->selected_item && i < list->selected_item
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+ list->selected_size && list->show_selection_marker)
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{/* The selected item must be displayed scrolling */
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if (global_settings.cursor_style == 1
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#ifdef HAVE_REMOTE_LCD
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/* the global_settings.cursor_style check is here to make
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* sure if they want the cursor instead of bar it will work
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*/
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|| (display->depth < 16 && global_settings.cursor_style)
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#endif
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)
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{
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/* Display inverted-line-style */
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style = STYLE_INVERT;
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}
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#ifdef HAVE_LCD_COLOR
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else if (global_settings.cursor_style == 2)
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{
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/* Display colour line selector */
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style = STYLE_COLORBAR;
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}
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else if (global_settings.cursor_style == 3)
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{
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/* Display gradient line selector */
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style = STYLE_GRADIENT;
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/* Make the lcd driver know how many lines the gradient should
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cover and current line number */
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/* number of selected lines */
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style |= NUMLN_PACK(list->selected_size);
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/* current line number, zero based */
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style |= CURLN_PACK(cur_line);
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cur_line++;
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}
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#endif
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/* if the text is smaller than the viewport size */
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if (item_offset> item_width - (list_text_vp->width - text_pos))
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{
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/* don't scroll */
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display->puts_style_offset(0, i-start, entry_name,
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style, item_offset);
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}
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else
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{
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display->puts_scroll_style_offset(0, i-start, entry_name,
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style, item_offset);
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}
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}
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else
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{
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if (list->scroll_all)
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display->puts_scroll_style_offset(0, i-start, entry_name,
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style, item_offset);
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else
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display->puts_style_offset(0, i-start, entry_name,
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style, item_offset);
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}
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/* do the icon */
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display->set_viewport(&list_icons);
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if (list->callback_get_item_icon && global_settings.show_icons)
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{
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screen_put_icon_with_offset(display, show_cursor?1:0,
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(i-start),show_cursor?ICON_PADDING:0,0,
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list->callback_get_item_icon(i, list->data));
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}
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if (show_cursor && i >= list->selected_item &&
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i < list->selected_item + list->selected_size)
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{
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screen_put_icon(display, 0, i-start, Icon_Cursor);
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}
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}
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display->set_viewport(parent);
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display->update_viewport();
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display->set_viewport(NULL);
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}
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#if defined(HAVE_TOUCHSCREEN)
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/* This needs to be fixed if we ever get more than 1 touchscreen on a target. */
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static bool scrolling=false;
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static int gui_synclist_touchscreen_scrollbar(struct gui_synclist * gui_list,
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int y)
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{
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const int screen = screens[SCREEN_MAIN].screen_type;
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const int nb_lines = viewport_get_nb_lines(&list_text[screen]);
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if (nb_lines < gui_list->nb_items)
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{
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scrolling = true;
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int scrollbar_size = nb_lines*
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font_get(gui_list->parent[screen]->font)->height;
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int actual_y = y - list_text[screen].y;
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int new_selection = (actual_y * gui_list->nb_items)
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/ scrollbar_size;
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int start_item = new_selection - nb_lines/2;
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if(start_item < 0)
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start_item = 0;
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else if(start_item > gui_list->nb_items - nb_lines)
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start_item = gui_list->nb_items - nb_lines;
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gui_list->start_item[screen] = start_item;
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gui_synclist_select_item(gui_list, new_selection);
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return ACTION_REDRAW;
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}
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return ACTION_NONE;
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}
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unsigned gui_synclist_do_touchscreen(struct gui_synclist * gui_list)
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{
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short x, y;
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const int button = action_get_touchscreen_press(&x, &y);
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int line;
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const struct screen *display = &screens[SCREEN_MAIN];
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const int screen = display->screen_type;
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const int list_start_item = gui_list->start_item[screen];
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const struct viewport *list_text_vp = &list_text[screen];
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if (button == BUTTON_NONE)
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return ACTION_NONE;
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if (x < list_text_vp->x)
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{
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/* Top left corner is GO_TO_ROOT */
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if (y<list_text[SCREEN_MAIN].y)
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{
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if (button == BUTTON_REL)
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return ACTION_STD_MENU;
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else if (button == (BUTTON_REPEAT|BUTTON_REL))
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return ACTION_STD_CONTEXT;
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else
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return ACTION_NONE;
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}
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/* Scroll bar */
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else if(global_settings.scrollbar == SCROLLBAR_LEFT)
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return gui_synclist_touchscreen_scrollbar(gui_list, y);
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}
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else
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{
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if (x > list_text_vp->x + list_text_vp->width &&
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global_settings.scrollbar == SCROLLBAR_RIGHT)
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return gui_synclist_touchscreen_scrollbar(gui_list, y);
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/* |--------------------------------------------------------|
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* | Description of the touchscreen list interface: |
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* |--------------------------------------------------------|
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* | Pressing an item will select it and "enter" it. |
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* | |
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* | Pressing and holding your pen down will scroll through |
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* | the list of items. |
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* | |
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* | Pressing and holding your pen down on a single item |
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* | will bring up the context menu of it. |
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* |--------------------------------------------------------|
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*/
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if (y > list_text_vp->y || button & BUTTON_REPEAT)
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{
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int line_height, actual_y;
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actual_y = y - list_text_vp->y;
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line_height = font_get(gui_list->parent[screen]->font)->height;
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line = actual_y / line_height;
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/* Pressed below the list*/
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if (list_start_item + line >= gui_list->nb_items)
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return ACTION_NONE;
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/* Pressed a border */
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if(UNLIKELY(actual_y % line_height == 0))
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return ACTION_NONE;
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if (line != (gui_list->selected_item - list_start_item)
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&& button ^ BUTTON_REL)
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{
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if(button & BUTTON_REPEAT)
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scrolling = true;
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gui_synclist_select_item(gui_list, list_start_item + line);
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return ACTION_REDRAW;
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}
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/* This has the same effect as the icons do when the scrollbar
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is on the left (ie eliminate the chances an user enters/starts
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an item when he wanted to use the scrollbar, due to touchscreen
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dead zones)
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*/
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if(global_settings.scrollbar == SCROLLBAR_RIGHT &&
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x > list_text_vp->x + list_text_vp->width -
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get_icon_width(SCREEN_MAIN))
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return ACTION_NONE;
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if (button == (BUTTON_REPEAT|BUTTON_REL))
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{
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if(!scrolling)
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{
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/* Pen was hold on the same line as the
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* previously selected one
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* => simulate long button press
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*/
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return ACTION_STD_CONTEXT;
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}
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else
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{
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/* Pen was moved across several lines and then released on
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* this one
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* => do nothing
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*/
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scrolling = false;
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return ACTION_NONE;
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}
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}
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else if(button == BUTTON_REL &&
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line == gui_list->selected_item - list_start_item)
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{
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/* Pen was released on either the same line as the previously
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* selected one or an other one
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* => simulate short press
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*/
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return ACTION_STD_OK;
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}
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else
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return ACTION_NONE;
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}
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/* Everything above the items is cancel */
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else if (y < list_text_vp->y && button == BUTTON_REL)
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return ACTION_STD_CANCEL;
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}
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return ACTION_NONE;
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}
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#endif
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