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New feature for the %xd() (display a preloaded image) skin tag.

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It can now automatically load the correct subimage from a strip (assuming the strip is in the correct order)  by giving a tag for the 2nd param.
example: %xd(F, %mp) which is equivilant to %?mp<%xd(Fa)|%xd(Fb)|%xd(Fc)|%xd(Fd)|%xd(Fe)>
You can also set the subimage offset.. i.e %xd(E, %mm, -1) which means "show nothing for the first value of %mm and use the bitmap strip for the remaining values"

if a tag+offset is <0 or greater than the number of subimages in a strip he image is cleared (I'm open to changing this if someone has a better idea)

cabbiev2.176x220x16.wps is an example of how to use this

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27717 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jonathan Gordon 2010-08-05 11:28:48 +00:00
parent 145571d9b5
commit 3f8e7fc26f
6 changed files with 75 additions and 23 deletions
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36
apps/gui/skin_engine/skin_parser.c
View file

@ -232,27 +232,39 @@ static int parse_image_display(struct skin_element *element,
char sublabel = text[1];
int subimage;
struct gui_img *img;
struct image_display *id = skin_buffer_alloc(sizeof(struct image_display));
/* sanity check */
img = find_image(label, wps_data);
if (!img)
if (!img || !id)
{
token->value.i = label; /* so debug works */
return WPS_ERROR_INVALID_PARAM;
}
if ((subimage = get_image_id(sublabel)) != -1)
id->label = label;
id->offset = 0;
if (element->params_count > 1)
{
if (subimage >= img->num_subimages)
return WPS_ERROR_INVALID_PARAM;
/* Store sub-image number to display in high bits */
token->value.i = label | (subimage << 8);
return 4; /* We have consumed 2 bytes */
} else {
token->value.i = label;
return 3; /* We have consumed 1 byte */
id->token = element->params[1].data.code->data;
if (element->params_count > 2)
id->offset = element->params[2].data.number;
}
else
{
id->token = NULL;
if ((subimage = get_image_id(sublabel)) != -1)
{
if (subimage >= img->num_subimages)
return WPS_ERROR_INVALID_PARAM;
id->subimage = subimage;
token->value.i = label | (subimage << 8);
} else {
id->subimage = 0;
}
}
token->value.data = id;
return 0;
}
static int parse_image_load(struct skin_element *element,

34
apps/gui/skin_engine/skin_render.c
View file

@ -144,11 +144,36 @@ static bool do_non_text_tags(struct gui_wps *gwps, struct skin_draw_info *info,
#ifdef HAVE_LCD_BITMAP
case SKIN_TOKEN_IMAGE_PRELOAD_DISPLAY:
{
char n = token->value.i & 0xFF;
int subimage = token->value.i >> 8;
struct image_display *id = token->value.data;
char n = id->label;
struct gui_img *img = find_image(n, data);
if (img && img->loaded)
img->display = subimage;
{
if (id->token == NULL)
{
img->display = id->subimage;
}
else
{
char buf[16];
const char *out;
int a = TOKEN_VALUE_ONLY;
out = get_token_value(gwps, id->token, buf, sizeof(buf), &a);
/* NOTE: get_token_value() returns values starting at 1! */
if (a == -1)
a = (out && *out) ? 1 : 2;
a--;
a += id->offset;
/* If the token returned a value which is higher than
* the amount of subimages clear the image. */
if (a<0 || a >= img->num_subimages)
{
clear_image_pos(gwps, img);
}
else
img->display = a;
}
}
break;
}
#ifdef HAVE_ALBUMART
@ -230,7 +255,8 @@ static void do_tags_in_hidden_conditional(struct skin_element* branch,
/* clear all pictures in the conditional and nested ones */
if (token->type == SKIN_TOKEN_IMAGE_PRELOAD_DISPLAY)
{
struct gui_img *img = find_image(token->value.i&0xFF, data);
struct image_display *id = token->value.data;
struct gui_img *img = find_image(id->label, data);
clear_image_pos(gwps, img);
}
else if (token->type == SKIN_TOKEN_PEAKMETER)

9
apps/gui/skin_engine/wps_internals.h
View file

@ -49,6 +49,9 @@
#define WPS_ALIGN_CENTER 64
#define WPS_ALIGN_LEFT 128
#define TOKEN_VALUE_ONLY 0xDEADD0D0
#ifdef HAVE_ALBUMART
/* albumart definitions */
@ -80,6 +83,12 @@ struct gui_img {
int display;
};
struct image_display {
char label;
int subimage;
struct wps_token *token; /* the token to get the subimage number from */
int offset; /* offset into the bitmap strip to start */
};
struct progressbar {
enum skin_token_type type;

2
lib/skin_parser/tag_table.c
View file

@ -167,7 +167,7 @@ static const struct tag_info legal_tags[] =
{ SKIN_TOKEN_DRAW_INBUILTBAR, "wi", "", SKIN_REFRESH_STATIC|NOBREAK },
{ SKIN_TOKEN_IMAGE_PRELOAD, "xl", "SFII|I", 0|NOBREAK },
{ SKIN_TOKEN_IMAGE_PRELOAD_DISPLAY, "xd", "S", 0 },
{ SKIN_TOKEN_IMAGE_PRELOAD_DISPLAY, "xd", "S|TI", 0 },
{ SKIN_TOKEN_IMAGE_DISPLAY, "x", "SFII", 0|NOBREAK },
{ SKIN_TOKEN_LOAD_FONT, "Fl" , "IF", 0|NOBREAK },

11
manual/appendix/wps_tags.tex
View file

@ -320,10 +320,15 @@ Examples:
\config{y}: y coordinate\newline
\config{nimages}: (optional) number of sub-images (tiled vertically, of the same height)
contained in the bitmap. Default is 1.\\
\config{\%xd(n[i])} & Display a preloaded image.
\config{\%xd(n[i] [,tag] [,offset])} & Display a preloaded image.
\config{n}: image ID (a-z and A-Z) as it was specified in \config{\%x} or \config{\%xl}\newline
\config{i}: (optional) number of the sub-image to display (a-z for 1-26 and A-Z for 27-52).
By default the first (i.e. top most) sub-image will be used.\\
\config{i}: (optional) number of the sub-image to display (a-z for 1-26 and A-Z for 27-52).
(ignored when \config{tag} is used)
By default the first (i.e. top most) sub-image will be used.\newline
\config{tag}: (optional) Another tag to calculate the subimage from e.g \config{\%xd(A, \%mh)} would
use the first subimage when \config{\%mh} is on and the second when it is off\newline
\config{offset}}: (optional) Add this number to the value from the \config{tag} when
chosing the subimage (may be negative)\\
\end{tagmap}
Examples:

6
wps/cabbiev2.176x220x16.wps
View file

@ -27,10 +27,10 @@
%?C<%s%ac%?id<%id|%?d(1)<%d(1)|%(root%)>>|>
%al %pc%ac%?Sr<%pe %Sx(of) %pp|%pp %Sx(of) %pe>%ar%pr
%?mh<%xd(Aa)|%xd(Ab)>
%xd(A, %mh)
%?bp<%?bc<%xd(Ba)|%xd(Bb)>|%?bl<|%xd(Bc)|%xd(Bd)|%xd(Be)|%xd(Bf)|%xd(Bg)|%xd(Bh)|%xd(Bi)|%xd(Bj)>>
%?pv<%xd(Ca)|%xd(Cb)|%xd(Cc)|%xd(Cd)|%xd(Ce)|%xd(Cf)|%xd(Cg)|%xd(Ch)|%xd(Ci)|%xd(Cj)>
%?ps<%xd(D)>
%?mm<|%xd(Ea)|%xd(Eb)|%xd(Ec)|%xd(Ed)>
%?mp<%xd(Fa)|%xd(Fb)|%xd(Fc)|%xd(Fd)|%xd(Fe)>
%xd(E, %mm, -1)
%xd(F, %mp)
%?C<%Cd>