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rockbox/apps/screen_access.c
Thomas Martitz 50eb528bc1 scroll_engine: Major rework to support pixel-based scrolling and scroll callbacks. 
Much of the scrolling work is moved from lcd-bitmap-common to lcd-scroll.c,
a small scroll callback routine remains. This callback can potentially be
overridden by more extensive scrollers.

The callback also gets fed with pixel-based scrolling information, which
finally removes the strict line-based nature of the scroll engine. Along with
this is the change from scroll_stop_viewport_line() to scroll_stop_viewport_rect()
which works on a pixel-based rectangle instead of lines.

The ultimate goal is to move most of the scroll work to apps, which can
much better decide which line decorations to apply etc. This work is laying
the ground work.

Change-Id: I3b2885cf7d8696ddd9253d5a9a73318d3d42831a
2013-12-14 23:11:31 +01:00

383 lines
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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2005 by Kevin Ferrare
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include <stdio.h>
#include "config.h"
#include <lcd.h>
#ifdef HAVE_REMOTE_LCD
#include <lcd-remote.h>
#endif
#include <scroll_engine.h>
#include <font.h>
#include <button.h>
#include <settings.h>
#include <kernel.h>
#include <icons.h>
#include "backlight.h"
#include "screen_access.h"
#include "backdrop.h"
/* some helper functions to calculate metrics on the fly */
static int screen_helper_getcharwidth(void)
{
#ifdef HAVE_LCD_BITMAP
return font_get(lcd_getfont())->maxwidth;
#else
return 1;
#endif
}
static int screen_helper_getcharheight(void)
{
#ifdef HAVE_LCD_BITMAP
return font_get(lcd_getfont())->height;
#else
return 1;
#endif
}
static int screen_helper_getnblines(void)
{
int height=screens[0].lcdheight;
#ifdef HAVE_LCD_BITMAP
if(global_settings.statusbar != STATUSBAR_OFF)
height -= STATUSBAR_HEIGHT;
#ifdef HAVE_BUTTONBAR
if(global_settings.buttonbar && screens[0].has_buttonbar)
height -= BUTTONBAR_HEIGHT;
#endif
#endif
return height / screens[0].getcharheight();
}
void screen_helper_setfont(int font)
{
(void)font;
#ifdef HAVE_LCD_BITMAP
if (font == FONT_UI)
font = global_status.font_id[SCREEN_MAIN];
lcd_setfont(font);
#endif
}
#ifdef HAVE_LCD_BITMAP
static int screen_helper_getuifont(void)
{
return global_status.font_id[SCREEN_MAIN];
}
static void screen_helper_setuifont(int font)
{
global_status.font_id[SCREEN_MAIN] = font;
}
#endif
#if NB_SCREENS == 2
static int screen_helper_remote_getcharwidth(void)
{
#ifdef HAVE_LCD_BITMAP
return font_get(lcd_remote_getfont())->maxwidth;
#else
return 1;
#endif
}
static int screen_helper_remote_getcharheight(void)
{
#ifdef HAVE_LCD_BITMAP
return font_get(lcd_remote_getfont())->height;
#else
return 1;
#endif
}
static int screen_helper_remote_getnblines(void)
{
int height=screens[1].lcdheight;
#ifdef HAVE_LCD_BITMAP
if(global_settings.statusbar != STATUSBAR_OFF)
height -= STATUSBAR_HEIGHT;
#ifdef HAVE_BUTTONBAR
if(global_settings.buttonbar && screens[1].has_buttonbar)
height -= BUTTONBAR_HEIGHT;
#endif
#endif
return height / screens[1].getcharheight();
}
void screen_helper_remote_setfont(int font)
{
if (font == FONT_UI)
font = global_status.font_id[SCREEN_REMOTE];
lcd_remote_setfont(font);
}
static int screen_helper_remote_getuifont(void)
{
#ifdef HAVE_LCD_BITMAP
return global_status.font_id[SCREEN_REMOTE];
#else
return FONT_SYSFIXED;
#endif
}
static void screen_helper_remote_setuifont(int font)
{
#ifdef HAVE_LCD_BITMAP
global_status.font_id[SCREEN_REMOTE] = font;
#endif
}
#endif
struct screen screens[NB_SCREENS] =
{
{
.screen_type=SCREEN_MAIN,
.lcdwidth=LCD_WIDTH,
.lcdheight=LCD_HEIGHT,
.depth=LCD_DEPTH,
.getnblines=&screen_helper_getnblines,
#if defined(HAVE_LCD_COLOR)
.is_color=true,
#else
.is_color=false,
#endif
#ifdef HAVE_LCD_BITMAP
.pixel_format=LCD_PIXELFORMAT,
#endif
.getcharwidth=screen_helper_getcharwidth,
.getcharheight=screen_helper_getcharheight,
#if (CONFIG_LED == LED_VIRTUAL)
.has_disk_led=false,
#elif defined(HAVE_REMOTE_LCD)
.has_disk_led=true,
#endif
.set_viewport=&lcd_set_viewport,
.getwidth=&lcd_getwidth,
.getheight=&lcd_getheight,
.getstringsize=&lcd_getstringsize,
#ifdef HAVE_LCD_BITMAP
.setfont=screen_helper_setfont,
.getuifont=screen_helper_getuifont,
.setuifont=screen_helper_setuifont,
.mono_bitmap=&lcd_mono_bitmap,
.mono_bitmap_part=&lcd_mono_bitmap_part,
.set_drawmode=&lcd_set_drawmode,
.bitmap=(screen_bitmap_func*)&lcd_bitmap,
.bitmap_part=(screen_bitmap_part_func*)&lcd_bitmap_part,
#if LCD_DEPTH <= 2
/* No transparency yet for grayscale and mono lcd */
.transparent_bitmap=(screen_bitmap_func*)&lcd_bitmap,
.transparent_bitmap_part=(screen_bitmap_part_func*)&lcd_bitmap_part,
#else
.transparent_bitmap=(screen_bitmap_func*)&lcd_bitmap_transparent,
.transparent_bitmap_part=(screen_bitmap_part_func*)&lcd_bitmap_transparent_part,
#endif
.bmp = &lcd_bmp,
.bmp_part = &lcd_bmp_part,
.nine_segment_bmp = &lcd_nine_segment_bmp,
#if LCD_DEPTH > 1
#if defined(HAVE_LCD_COLOR) && defined(LCD_REMOTE_DEPTH) && LCD_REMOTE_DEPTH > 1
.color_to_native=&lcd_color_to_native,
#endif
.get_background=&lcd_get_background,
.get_foreground=&lcd_get_foreground,
.set_background=&lcd_set_background,
.set_foreground=&lcd_set_foreground,
#ifdef HAVE_LCD_COLOR
.set_selector_start=&lcd_set_selector_start,
.set_selector_end=&lcd_set_selector_end,
.set_selector_text=&lcd_set_selector_text,
#endif
#endif /* LCD_DEPTH > 1 */
.update_rect=&lcd_update_rect,
.update_viewport_rect=&lcd_update_viewport_rect,
.fillrect=&lcd_fillrect,
.drawrect=&lcd_drawrect,
.draw_border_viewport=&lcd_draw_border_viewport,
.fill_viewport=&lcd_fill_viewport,
.drawpixel=&lcd_drawpixel,
.drawline=&lcd_drawline,
.vline=&lcd_vline,
.hline=&lcd_hline,
.scroll_step=&lcd_scroll_step,
.puts_style_offset=&lcd_puts_style_offset,
.puts_style_xyoffset=&lcd_puts_style_xyoffset,
.puts_scroll_style=&lcd_puts_scroll_style,
.puts_scroll_style_offset=&lcd_puts_scroll_style_offset,
.puts_scroll_style_xyoffset=&lcd_puts_scroll_style_xyoffset,
#endif /* HAVE_LCD_BITMAP */
#ifdef HAVE_LCD_CHARCELLS
.double_height=&lcd_double_height,
.putchar=&lcd_putc,
.get_locked_pattern=&lcd_get_locked_pattern,
.define_pattern=&lcd_define_pattern,
.unlock_pattern=&lcd_unlock_pattern,
.icon=&lcd_icon,
#endif /* HAVE_LCD_CHARCELLS */
.putsxy=&lcd_putsxy,
.puts=&lcd_puts,
.putsf=&lcd_putsf,
.puts_offset=&lcd_puts_offset,
.puts_scroll=&lcd_puts_scroll,
.puts_scroll_offset=&lcd_puts_scroll_offset,
.scroll_speed=&lcd_scroll_speed,
.scroll_delay=&lcd_scroll_delay,
.clear_display=&lcd_clear_display,
.clear_viewport=&lcd_clear_viewport,
.scroll_stop_viewport_rect=&lcd_scroll_stop_viewport_rect,
.scroll_stop=&lcd_scroll_stop,
.scroll_stop_viewport=&lcd_scroll_stop_viewport,
.update=&lcd_update,
.update_viewport=&lcd_update_viewport,
.backlight_on=&backlight_on,
.backlight_off=&backlight_off,
.is_backlight_on=&is_backlight_on,
.backlight_set_timeout=&backlight_set_timeout,
#if LCD_DEPTH > 1
.backdrop_load=&backdrop_load,
.backdrop_show=&backdrop_show,
#endif
#ifdef HAVE_BUTTONBAR
.has_buttonbar=false,
#endif
#if defined(HAVE_LCD_BITMAP)
.set_framebuffer = (void*)lcd_set_framebuffer,
#if defined(HAVE_LCD_COLOR)
.gradient_fillrect = lcd_gradient_fillrect,
#endif
#endif
},
#if NB_SCREENS == 2
{
.screen_type=SCREEN_REMOTE,
.lcdwidth=LCD_REMOTE_WIDTH,
.lcdheight=LCD_REMOTE_HEIGHT,
.depth=LCD_REMOTE_DEPTH,
.getnblines=&screen_helper_remote_getnblines,
.is_color=false,/* No color remotes yet */
.pixel_format=LCD_REMOTE_PIXELFORMAT,
.getcharwidth=screen_helper_remote_getcharwidth,
.getcharheight=screen_helper_remote_getcharheight,
.has_disk_led=false,
.set_viewport=&lcd_remote_set_viewport,
.getwidth=&lcd_remote_getwidth,
.getheight=&lcd_remote_getheight,
.getstringsize=&lcd_remote_getstringsize,
#if 1 /* all remote LCDs are bitmapped so far */
.setfont=screen_helper_remote_setfont,
.getuifont=screen_helper_remote_getuifont,
.setuifont=screen_helper_remote_setuifont,
.mono_bitmap=&lcd_remote_mono_bitmap,
.mono_bitmap_part=&lcd_remote_mono_bitmap_part,
.bitmap=(screen_bitmap_func*)&lcd_remote_bitmap,
.bitmap_part=(screen_bitmap_part_func*)&lcd_remote_bitmap_part,
.set_drawmode=&lcd_remote_set_drawmode,
#if LCD_REMOTE_DEPTH <= 2
/* No transparency yet for grayscale and mono lcd */
.transparent_bitmap=(screen_bitmap_func*)&lcd_remote_bitmap,
.transparent_bitmap_part=(screen_bitmap_part_func*)&lcd_remote_bitmap_part,
/* No colour remotes yet */
#endif
.bmp = &lcd_remote_bmp,
.bmp_part = &lcd_remote_bmp_part,
.nine_segment_bmp = &lcd_remote_nine_segment_bmp,
#if LCD_REMOTE_DEPTH > 1
#if defined(HAVE_LCD_COLOR)
.color_to_native=&lcd_remote_color_to_native,
#endif
.get_background=&lcd_remote_get_background,
.get_foreground=&lcd_remote_get_foreground,
.set_background=&lcd_remote_set_background,
.set_foreground=&lcd_remote_set_foreground,
#endif /* LCD_REMOTE_DEPTH > 1 */
.update_rect=&lcd_remote_update_rect,
.update_viewport_rect=&lcd_remote_update_viewport_rect,
.fillrect=&lcd_remote_fillrect,
.drawrect=&lcd_remote_drawrect,
.draw_border_viewport=&lcd_remote_draw_border_viewport,
.fill_viewport=&lcd_remote_fill_viewport,
.drawpixel=&lcd_remote_drawpixel,
.drawline=&lcd_remote_drawline,
.vline=&lcd_remote_vline,
.hline=&lcd_remote_hline,
.scroll_step=&lcd_remote_scroll_step,
.puts_style_offset=&lcd_remote_puts_style_offset,
.puts_style_xyoffset=&lcd_remote_puts_style_xyoffset,
.puts_scroll_style=&lcd_remote_puts_scroll_style,
.puts_scroll_style_offset=&lcd_remote_puts_scroll_style_offset,
.puts_scroll_style_xyoffset=&lcd_remote_puts_scroll_style_xyoffset,
#endif /* 1 */
#if 0 /* no charcell remote LCDs so far */
.double_height=&lcd_remote_double_height,
.putc=&lcd_remote_putc,
.get_locked_pattern=&lcd_remote_get_locked_pattern,
.define_pattern=&lcd_remote_define_pattern,
.icon=&lcd_remote_icon,
#endif /* 0 */
.putsxy=&lcd_remote_putsxy,
.puts=&lcd_remote_puts,
.putsf=&lcd_remote_putsf,
.puts_offset=&lcd_remote_puts_offset,
.puts_scroll=&lcd_remote_puts_scroll,
.puts_scroll_offset=&lcd_remote_puts_scroll_offset,
.scroll_speed=&lcd_remote_scroll_speed,
.scroll_delay=&lcd_remote_scroll_delay,
.clear_display=&lcd_remote_clear_display,
.clear_viewport=&lcd_remote_clear_viewport,
.scroll_stop_viewport_rect=&lcd_remote_scroll_stop_viewport_rect,
.scroll_stop=&lcd_remote_scroll_stop,
.scroll_stop_viewport=&lcd_remote_scroll_stop_viewport,
.update=&lcd_remote_update,
.update_viewport=&lcd_remote_update_viewport,
.backlight_on=&remote_backlight_on,
.backlight_off=&remote_backlight_off,
.is_backlight_on=&is_remote_backlight_on,
.backlight_set_timeout=&remote_backlight_set_timeout,
#if LCD_DEPTH > 1
.backdrop_load=&remote_backdrop_load,
.backdrop_show=&remote_backdrop_show,
#endif
#ifdef HAVE_BUTTONBAR
.has_buttonbar=false,
#endif
#if defined(HAVE_LCD_BITMAP)
.set_framebuffer = (void*)lcd_remote_set_framebuffer,
#endif
}
#endif /* NB_SCREENS == 2 */
};
#ifdef HAVE_LCD_BITMAP
void screen_clear_area(struct screen * display, int xstart, int ystart,
int width, int height)
{
display->set_drawmode(DRMODE_SOLID|DRMODE_INVERSEVID);
display->fillrect(xstart, ystart, width, height);
display->set_drawmode(DRMODE_SOLID);
}
#endif
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