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some changes to use of display_text.

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* add parameter, wait_key to display_text().
 - set this true to wait button press after all words is displayed.
* use ARRAYLEN macro instead of #define WORDS
* add macro to indicate end of style array.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24846 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Teruaki Kawashima 2010-02-22 07:17:15 +00:00
parent 04067fd7a0
commit 56d29e8977
13 changed files with 91 additions and 166 deletions
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26
apps/plugins/lib/display_text.h
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@ -19,16 +19,20 @@
* KIND, either express or implied.
*
****************************************************************************/
#ifndef _DISPLAY_TEXT_H
#define _DISPLAY_TEXT_H
#include "plugin.h"
/*
* basic usage:
* #define WORDS (sizeof text / sizeof (char*))
* char *text[] = {"normal", "centering", "red,underline"};
* struct style_text formation[]={
* { 1, TEXT_CENTER },
* { 2, C_RED|TEXT_UNDERLINE },
* LAST_STYLE_ITEM
* };
* if (display_text(WORDS, text, formation, NULL))
* if (display_text(ARRAYLEN(text), text, formation, NULL, true))
* return PLUGIN_USB_CONNECTED;
*/
@ -36,13 +40,23 @@ enum ecolor { STANDARD, C_YELLOW, C_RED, C_BLUE, C_GREEN , C_ORANGE };
#define TEXT_COLOR_MASK 0x00ff
#define TEXT_CENTER 0x0100
#define TEXT_UNDERLINE 0x0200
#define LAST_STYLE_ITEM { -1, 0 }
struct style_text {
unsigned short index;
unsigned short flags;
};
/* style and vp_text are optional.
* return true if usb is connected. */
bool display_text(short words, char** text, struct style_text* style,
struct viewport* vp_text);
/*
* display text.
* - words : number of words in text.
* - text : array of word to be displayed. use empty string for newline.
* - style : (optional) set style of each word. must be sorted by index.
* - vp_text : (optional) viewport to display text.
* - wait_key : set true to wait button press after all words is displayed.
* return true if usb is connected, false otherwise.
*/
bool display_text(unsigned short words, char** text, struct style_text* style,
struct viewport* vp_text, bool wait_key);
#endif /* _DISPLAY_TEXT_H */