162 lines
3.9 KiB
C
162 lines
3.9 KiB
C
/*
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* File : font.c
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2006 - 2009, RT-Thread Development Team
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rt-thread.org/license/LICENSE
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*
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* Change Logs:
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* Date Author Notes
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* 2009-10-16 Bernard first version
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*/
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#include <rtgui/font.h>
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#include <rtgui/dc.h>
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static rtgui_list_t _rtgui_font_list;
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static struct rtgui_font *rtgui_default_font;
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extern struct rtgui_font rtgui_font_asc16;
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extern struct rtgui_font rtgui_font_arial16;
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extern struct rtgui_font rtgui_font_asc12;
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extern struct rtgui_font rtgui_font_arial12;
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#ifdef RTGUI_USING_FONTHZ
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extern struct rtgui_font rtgui_font_hz16;
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extern struct rtgui_font rtgui_font_hz12;
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#endif
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void rtgui_font_system_init()
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{
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rtgui_list_init(&(_rtgui_font_list));
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/* set default font to NULL */
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rtgui_default_font = RT_NULL;
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#ifdef RTGUI_USING_FONT16
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rtgui_font_system_add_font(&rtgui_font_asc16);
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#ifdef RTGUI_USING_FONTHZ
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rtgui_font_system_add_font(&rtgui_font_hz16);
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#endif
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#endif
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#ifdef RTGUI_USING_FONT12
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rtgui_font_system_add_font(&rtgui_font_asc12);
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#ifdef RTGUI_USING_FONTHZ
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rtgui_font_system_add_font(&rtgui_font_hz12);
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#endif
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#endif
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#ifdef RTGUI_USING_FONT12
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if (rtgui_default_font == RT_NULL)
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rtgui_font_set_defaut(&rtgui_font_asc12);
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#endif
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#ifdef RTGUI_USING_FONT16
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if (rtgui_default_font == RT_NULL)
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rtgui_font_set_defaut(&rtgui_font_asc16);
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#endif
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}
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void rtgui_font_system_add_font(struct rtgui_font *font)
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{
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rtgui_list_init(&(font->list));
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rtgui_list_append(&_rtgui_font_list, &(font->list));
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/* init font */
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if (font->engine->font_init != RT_NULL)
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font->engine->font_init(font);
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/* first refer, load it */
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if (font->engine->font_load != RT_NULL)
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font->engine->font_load(font);
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}
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RTM_EXPORT(rtgui_font_system_add_font);
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void rtgui_font_system_remove_font(struct rtgui_font *font)
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{
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rtgui_list_remove(&_rtgui_font_list, &(font->list));
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}
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RTM_EXPORT(rtgui_font_system_remove_font);
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struct rtgui_font *rtgui_font_default()
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{
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return rtgui_default_font;
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}
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void rtgui_font_set_defaut(struct rtgui_font *font)
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{
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rtgui_default_font = font;
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}
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struct rtgui_font *rtgui_font_refer(const char *family, rt_uint16_t height)
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{
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/* search font */
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struct rtgui_list_node *node;
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struct rtgui_font *font;
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rtgui_list_foreach(node, &_rtgui_font_list)
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{
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font = rtgui_list_entry(node, struct rtgui_font, list);
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if ((rt_strncmp(font->family, family, RTGUI_NAME_MAX) == 0) &&
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font->height == height)
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{
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font->refer_count ++;
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return font;
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}
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}
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return RT_NULL;
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}
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RTM_EXPORT(rtgui_font_refer);
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void rtgui_font_derefer(struct rtgui_font *font)
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{
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RT_ASSERT(font != RT_NULL);
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font->refer_count --;
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/* no refer, remove font */
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if (font->refer_count == 0)
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{
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rtgui_font_system_remove_font(font);
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}
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}
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/* draw a text */
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void rtgui_font_draw(struct rtgui_font *font, struct rtgui_dc *dc, const char *text, rt_ubase_t len, struct rtgui_rect *rect)
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{
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RT_ASSERT(font != RT_NULL);
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if (font->engine != RT_NULL &&
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font->engine->font_draw_text != RT_NULL)
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{
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font->engine->font_draw_text(font, dc, text, len, rect);
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}
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}
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int rtgui_font_get_string_width(struct rtgui_font *font, const char *text)
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{
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rtgui_rect_t rect;
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/* get metrics */
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rtgui_font_get_metrics(font, text, &rect);
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return rect.x2 - rect.x1;
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}
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void rtgui_font_get_metrics(struct rtgui_font *font, const char *text, rtgui_rect_t *rect)
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{
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RT_ASSERT(font != RT_NULL);
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if (font->engine != RT_NULL &&
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font->engine->font_get_metrics != RT_NULL)
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{
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font->engine->font_get_metrics(font, text, rect);
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}
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else
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{
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/* no font engine found, set rect to zero */
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rt_memset(rect, 0, sizeof(rtgui_rect_t));
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}
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}
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