308 lines
6.6 KiB
C
308 lines
6.6 KiB
C
/*
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* File : image.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 <rtthread.h>
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#include <rtgui/image.h>
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#include <rtgui/image_hdc.h>
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#include <rtgui/rtgui_system.h>
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#include <rtgui/image_container.h>
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#include <string.h>
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#ifdef RTGUI_IMAGE_XPM
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#include <rtgui/image_xpm.h>
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#endif
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#ifdef RTGUI_IMAGE_BMP
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#include <rtgui/image_bmp.h>
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#endif
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#ifdef RTGUI_IMAGE_JPEG
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#include <rtgui/image_jpeg.h>
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#endif
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#ifdef RTGUI_IMAGE_PNG
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#include <rtgui/image_png.h>
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#endif
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static rtgui_list_t _rtgui_system_image_list = {RT_NULL};
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/* initialize rtgui image system */
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void rtgui_system_image_init(void)
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{
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/* always support HDC image */
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rtgui_image_hdc_init();
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#ifdef RTGUI_IMAGE_XPM
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rtgui_image_xpm_init();
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#endif
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#ifdef RTGUI_IMAGE_BMP
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rtgui_image_bmp_init();
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#endif
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#ifdef RTGUI_IMAGE_JPEG
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rtgui_image_jpeg_init();
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#endif
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#ifdef RTGUI_IMAGE_PNG
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rtgui_image_png_init();
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#endif
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#ifdef RTGUI_IMAGE_CONTAINER
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/* initialize image container */
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rtgui_system_image_container_init(RT_FALSE);
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#endif
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}
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static struct rtgui_image_engine* rtgui_image_get_engine(const char* type)
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{
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struct rtgui_list_node *node;
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struct rtgui_image_engine *engine;
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rtgui_list_foreach(node, &_rtgui_system_image_list)
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{
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engine = rtgui_list_entry(node, struct rtgui_image_engine, list);
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if (strncasecmp(engine->name, type, strlen(engine->name)) ==0)
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return engine;
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}
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return RT_NULL;
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}
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#if defined(RTGUI_USING_DFS_FILERW) || defined(RTGUI_USING_STDIO_FILERW)
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static struct rtgui_image_engine* rtgui_image_get_engine_by_filename(const char* fn)
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{
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struct rtgui_list_node *node;
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struct rtgui_image_engine *engine;
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const char* ext;
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ext = fn + rt_strlen(fn);
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while (ext != fn)
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{
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if (*ext == '.') { ext ++; break; }
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ext --;
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}
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if (ext == fn) return RT_NULL; /* no ext */
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rtgui_list_foreach(node, &_rtgui_system_image_list)
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{
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engine = rtgui_list_entry(node, struct rtgui_image_engine, list);
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if (strncasecmp(engine->name, ext, strlen(engine->name)) == 0)
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return engine;
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}
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return RT_NULL;
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}
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struct rtgui_image* rtgui_image_create_from_file(const char* type, const char* filename, rt_bool_t load)
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{
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struct rtgui_filerw* filerw;
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struct rtgui_image_engine* engine;
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struct rtgui_image* image = RT_NULL;
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/* create filerw context */
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filerw = rtgui_filerw_create_file(filename, "rb");
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if (filerw == RT_NULL) return RT_NULL;
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/* get image engine */
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engine = rtgui_image_get_engine(type);
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if (engine == RT_NULL)
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{
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/* close filerw context */
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rtgui_filerw_close(filerw);
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return RT_NULL;
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}
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if (engine->image_check(filerw) == RT_TRUE)
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{
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image = (struct rtgui_image*) rtgui_malloc(sizeof(struct rtgui_image));
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if (image == RT_NULL)
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{
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/* close filerw context */
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rtgui_filerw_close(filerw);
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return RT_NULL;
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}
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image->palette = RT_NULL;
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if (engine->image_load(image, filerw, load) != RT_TRUE)
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{
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/* close filerw context */
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rtgui_filerw_close(filerw);
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return RT_NULL;
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}
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/* set image engine */
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image->engine = engine;
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}
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else
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{
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rtgui_filerw_close(filerw);
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}
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return image;
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}
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struct rtgui_image* rtgui_image_create(const char* filename, rt_bool_t load)
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{
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struct rtgui_filerw* filerw;
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struct rtgui_image_engine* engine;
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struct rtgui_image* image = RT_NULL;
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/* create filerw context */
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filerw = rtgui_filerw_create_file(filename, "rb");
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if (filerw == RT_NULL) return RT_NULL;
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/* get image engine */
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engine = rtgui_image_get_engine_by_filename(filename);
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if (engine == RT_NULL)
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{
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/* close filerw context */
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rtgui_filerw_close(filerw);
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return RT_NULL;
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}
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if (engine->image_check(filerw) == RT_TRUE)
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{
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image = (struct rtgui_image*) rtgui_malloc(sizeof(struct rtgui_image));
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if (image == RT_NULL)
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{
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/* close filerw context */
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rtgui_filerw_close(filerw);
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return RT_NULL;
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}
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image->palette = RT_NULL;
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if (engine->image_load(image, filerw, load) != RT_TRUE)
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{
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/* close filerw context */
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rtgui_filerw_close(filerw);
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return RT_NULL;
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}
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/* set image engine */
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image->engine = engine;
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}
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else
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{
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rtgui_filerw_close(filerw);
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}
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return image;
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}
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#endif
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struct rtgui_image* rtgui_image_create_from_mem(const char* type, const rt_uint8_t* data, rt_size_t length, rt_bool_t load)
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{
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struct rtgui_filerw* filerw;
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struct rtgui_image_engine* engine;
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struct rtgui_image* image = RT_NULL;
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/* create filerw context */
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filerw = rtgui_filerw_create_mem(data, length);
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if (filerw == RT_NULL) return RT_NULL;
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/* get image engine */
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engine = rtgui_image_get_engine(type);
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if (engine == RT_NULL)
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{
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/* close filerw context */
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rtgui_filerw_close(filerw);
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return RT_NULL;
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}
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if (engine->image_check(filerw) == RT_TRUE)
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{
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image = (struct rtgui_image*) rtgui_malloc(sizeof(struct rtgui_image));
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if (image == RT_NULL)
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{
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/* close filerw context */
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rtgui_filerw_close(filerw);
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return RT_NULL;
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}
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image->palette = RT_NULL;
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if (engine->image_load(image, filerw, load) != RT_TRUE)
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{
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/* close filerw context */
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rtgui_filerw_close(filerw);
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return RT_NULL;
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}
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/* set image engine */
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image->engine = engine;
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}
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else
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{
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rtgui_filerw_close(filerw);
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}
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return image;
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}
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void rtgui_image_destroy(struct rtgui_image* image)
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{
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RT_ASSERT(image != RT_NULL);
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image->engine->image_unload(image);
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if (image->palette != RT_NULL)
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rtgui_free(image->palette);
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rtgui_free(image);
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}
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/* register an image engine */
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void rtgui_image_register_engine(struct rtgui_image_engine* engine)
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{
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RT_ASSERT(engine!= RT_NULL);
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rtgui_list_append(&_rtgui_system_image_list, &(engine->list));
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}
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void rtgui_image_blit(struct rtgui_image* image, struct rtgui_dc* dc, struct rtgui_rect* rect)
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{
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RT_ASSERT(dc != RT_NULL);
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RT_ASSERT(rect != RT_NULL);
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if (rtgui_dc_get_visible(dc) != RT_TRUE) return;
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if (image != RT_NULL && image->engine != RT_NULL)
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{
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/* use image engine to blit */
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image->engine->image_blit(image, dc, rect);
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}
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}
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struct rtgui_image_palette* rtgui_image_palette_create(rt_uint32_t ncolors)
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{
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struct rtgui_image_palette* palette = RT_NULL;
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if (ncolors > 0)
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{
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palette = (struct rtgui_image_palette*) rtgui_malloc(sizeof(struct rtgui_image_palette) +
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sizeof(rtgui_color_t) * ncolors);
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if (palette != RT_NULL) palette->colors = (rtgui_color_t*)(palette + 1);
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}
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return palette;
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}
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void rtgui_image_get_rect(struct rtgui_image* image, struct rtgui_rect* rect)
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{
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RT_ASSERT(image != RT_NULL);
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RT_ASSERT(rect != RT_NULL);
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rect->x1 = 0; rect->y1 = 0;
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rect->x2 = image->w; rect->y2 = image->h;
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}
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