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- /*
- * File : image.c
- * This file is part of RT-Thread RTOS
- * COPYRIGHT (C) 2006 - 2009, RT-Thread Development Team
- *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://www.rt-thread.org/license/LICENSE
- *
- * Change Logs:
- * Date Author Notes
- * 2009-10-16 Bernard first version
- */
- #include <rtthread.h>
- #include <rtgui/image.h>
- #include <rtgui/image_xpm.h>
- #include <rtgui/image_hdc.h>
- #include <rtgui/rtgui_system.h>
- #include <string.h>
- #ifdef RTGUI_IMAGE_BMP
- #include <rtgui/image_bmp.h>
- #endif
- #ifdef RTGUI_IMAGE_JPEG
- #include <rtgui/image_jpeg.h>
- #endif
- #ifdef RTGUI_IMAGE_PNG
- #include <rtgui/image_png.h>
- #endif
- static rtgui_list_t _rtgui_system_image_list = {RT_NULL};
- /* init rtgui image system */
- void rtgui_system_image_init(void)
- {
- /* always support XPM image */
- rtgui_image_xpm_init();
- rtgui_image_hdc_init();
-
- #ifdef RTGUI_IMAGE_BMP
- rtgui_image_bmp_init();
- #endif
- #ifdef RTGUI_IMAGE_JPEG
- rtgui_image_jpeg_init();
- #endif
- #ifdef RTGUI_IMAGE_PNG
- rtgui_image_png_init();
- #endif
- }
- static struct rtgui_image_engine* rtgui_image_get_engine(const char* type)
- {
- struct rtgui_list_node *node;
- struct rtgui_image_engine *engine;
- rtgui_list_foreach(node, &_rtgui_system_image_list)
- {
- engine = rtgui_list_entry(node, struct rtgui_image_engine, list);
- if (strncasecmp(engine->name, type, strlen(engine->name)) ==0)
- return engine;
- }
- return RT_NULL;
- }
- struct rtgui_image* rtgui_image_create_from_file(const char* type, const char* filename, rt_bool_t load)
- {
- struct rtgui_filerw* filerw;
- struct rtgui_image_engine* engine;
- struct rtgui_image* image = RT_NULL;
- /* create filerw context */
- filerw = rtgui_filerw_create_file(filename, "rb");
- if (filerw == RT_NULL) return RT_NULL;
- /* get image engine */
- engine = rtgui_image_get_engine(type);
- if (engine == RT_NULL)
- {
- /* close filerw context */
- rtgui_filerw_close(filerw);
- return RT_NULL;
- }
- if (engine->image_check(filerw) == RT_TRUE)
- {
- image = (struct rtgui_image*) rtgui_malloc(sizeof(struct rtgui_image));
- if (image == RT_NULL)
- {
- /* close filerw context */
- rtgui_filerw_close(filerw);
- return RT_NULL;
- }
- if (engine->image_load(image, filerw, load) != RT_TRUE)
- {
- /* close filerw context */
- rtgui_filerw_close(filerw);
- return RT_NULL;
- }
- /* set image engine */
- image->engine = engine;
- }
- else
- {
- rtgui_filerw_close(filerw);
- }
- return image;
- }
- struct rtgui_image* rtgui_image_create_from_mem(const char* type, const rt_uint8_t* data, rt_size_t length, rt_bool_t load)
- {
- struct rtgui_filerw* filerw;
- struct rtgui_image_engine* engine;
- struct rtgui_image* image = RT_NULL;
- /* create filerw context */
- filerw = rtgui_filerw_create_mem(data, length);
- if (filerw == RT_NULL) return RT_NULL;
- /* get image engine */
- engine = rtgui_image_get_engine(type);
- if (engine == RT_NULL)
- {
- /* close filerw context */
- rtgui_filerw_close(filerw);
- return RT_NULL;
- }
- if (engine->image_check(filerw) == RT_TRUE)
- {
- image = (struct rtgui_image*) rtgui_malloc(sizeof(struct rtgui_image));
- if (image == RT_NULL)
- {
- /* close filerw context */
- rtgui_filerw_close(filerw);
- return RT_NULL;
- }
- if (engine->image_load(image, filerw, load) != RT_TRUE)
- {
- /* close filerw context */
- rtgui_filerw_close(filerw);
- return RT_NULL;
- }
- /* set image engine */
- image->engine = engine;
- }
- else
- {
- rtgui_filerw_close(filerw);
- }
- return image;
- }
- void rtgui_image_destroy(struct rtgui_image* image)
- {
- RT_ASSERT(image != RT_NULL);
- image->engine->image_unload(image);
- rtgui_free(image);
- }
- /* register an image engine */
- void rtgui_image_register_engine(struct rtgui_image_engine* engine)
- {
- RT_ASSERT(engine!= RT_NULL);
- rtgui_list_append(&_rtgui_system_image_list, &(engine->list));
- }
- void rtgui_image_blit(struct rtgui_image* image, struct rtgui_dc* dc, struct rtgui_rect* rect)
- {
- RT_ASSERT(dc != RT_NULL);
- RT_ASSERT(rect != RT_NULL);
- if (rtgui_dc_get_visible(dc) != RT_TRUE) return;
- if (image != RT_NULL && image->engine != RT_NULL)
- {
- /* use image engine to blit */
- image->engine->image_blit(image, dc, rect);
- }
- }
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