#include #include #include #define HDC_MAGIC_LEN 4 struct rtgui_image_hdc { rt_bool_t is_loaded; struct rtgui_filerw* filerw; struct rtgui_graphic_driver* hw_driver; /* hdc image information */ rt_uint16_t byte_per_pixel; rt_uint16_t pitch; rt_size_t pixel_offset; rt_uint8_t *pixels; }; static rt_bool_t rtgui_image_hdc_check(struct rtgui_filerw* file); static rt_bool_t rtgui_image_hdc_load(struct rtgui_image* image, struct rtgui_filerw* file, rt_bool_t load); static void rtgui_image_hdc_unload(struct rtgui_image* image); static void rtgui_image_hdc_blit(struct rtgui_image* image, struct rtgui_dc* dc, struct rtgui_rect* rect); struct rtgui_image_engine rtgui_image_hdc_engine = { "hdc", { RT_NULL }, rtgui_image_hdc_check, rtgui_image_hdc_load, rtgui_image_hdc_unload, rtgui_image_hdc_blit }; static rt_bool_t rtgui_image_hdc_check(struct rtgui_filerw* file) { int start; rt_bool_t is_HDC; rt_uint8_t magic[4]; if ( !file ) return 0; start = rtgui_filerw_tell(file); /* move to the beginning of file */ rtgui_filerw_seek(file, 0, RTGUI_FILE_SEEK_SET); is_HDC = RT_FALSE; if ( rtgui_filerw_read(file, magic, 1, sizeof(magic)) == sizeof(magic) ) { if ( magic[0] == 'H' && magic[1] == 'D' && magic[2] == 'C' && magic[3] == '\0' ) { is_HDC = RT_TRUE; } } rtgui_filerw_seek(file, start, RTGUI_FILE_SEEK_SET); return(is_HDC); } static rt_bool_t rtgui_image_hdc_load(struct rtgui_image* image, struct rtgui_filerw* file, rt_bool_t load) { rt_uint32_t header[5]; struct rtgui_image_hdc* hdc; hdc = (struct rtgui_image_hdc*) rtgui_malloc(sizeof(struct rtgui_image_hdc)); if (hdc == RT_NULL) return RT_FALSE; hdc->hw_driver = rtgui_graphic_driver_get_default(); if (hdc->hw_driver == RT_NULL) { rtgui_free(hdc); return RT_FALSE; } rtgui_filerw_read(file, (char*)&header, 1, sizeof(header)); /* set image information */ image->w = header[1]; image->h = header[2]; image->engine = &rtgui_image_hdc_engine; image->data = hdc; hdc->filerw = file; hdc->byte_per_pixel = hdc->hw_driver->byte_per_pixel; hdc->pitch = image->w * hdc->byte_per_pixel; hdc->pixel_offset = rtgui_filerw_tell(file); if (load == RT_TRUE) { /* load all pixels */ hdc->pixels = rtgui_malloc(image->h * hdc->pitch); if (hdc->pixels == RT_NULL) { /* release data */ rtgui_free(hdc); return RT_FALSE; } rtgui_filerw_read(hdc->filerw, hdc->pixels, 1, image->h * hdc->pitch); rtgui_filerw_close(hdc->filerw); hdc->filerw = RT_NULL; hdc->pixel_offset = 0; } else { hdc->pixels = RT_NULL; } return RT_TRUE; } static void rtgui_image_hdc_unload(struct rtgui_image* image) { struct rtgui_image_hdc* hdc; if (image != RT_NULL) { hdc = (struct rtgui_image_hdc*) image->data; if (hdc->pixels != RT_NULL) rtgui_free(hdc->pixels); if (hdc->filerw != RT_NULL) { rtgui_filerw_close(hdc->filerw); hdc->filerw = RT_NULL; } /* release data */ rtgui_free(hdc); } } static void rtgui_image_hdc_blit(struct rtgui_image* image, struct rtgui_dc* dc, struct rtgui_rect* dst_rect) { rt_uint16_t y, w, h; rtgui_color_t foreground; struct rtgui_image_hdc* hdc; rt_uint16_t rect_pitch, hw_pitch; rtgui_rect_t dc_rect, _rect, *rect; RT_ASSERT(image != RT_NULL || dc != RT_NULL || dst_rect != RT_NULL); _rect = *dst_rect; rect = &_rect; /* this dc is not visible */ if (dc->get_visible(dc) != RT_TRUE) return; hdc = (struct rtgui_image_hdc*) image->data; RT_ASSERT(hdc != RT_NULL); /* transfer logic coordinate to physical coordinate */ if (dc->type == RTGUI_DC_HW) { dc_rect = ((struct rtgui_dc_hw*)dc)->owner->extent; } else rtgui_dc_get_rect(dc, &dc_rect); rtgui_rect_moveto(rect, dc_rect.x1, dc_rect.y1); /* the minimum rect */ if (image->w < rtgui_rect_width(*rect)) w = image->w; else w = rtgui_rect_width(*rect); if (image->h < rtgui_rect_height(*rect)) h = image->h; else h = rtgui_rect_height(*rect); /* get rect pitch */ rect_pitch = w * hdc->byte_per_pixel; hw_pitch = hdc->hw_driver->width * hdc->hw_driver->byte_per_pixel; /* save foreground color */ foreground = rtgui_dc_get_color(dc); if (hdc->pixels != RT_NULL) { if (hdc->hw_driver->get_framebuffer() != RT_NULL) { rt_uint8_t* rect_ptr; rt_uint8_t* hw_ptr; /* get pixel pointer */ hw_ptr = hdc->hw_driver->get_framebuffer(); rect_ptr = hdc->pixels; /* move hardware pixel pointer */ hw_ptr += rect->y1 * hdc->pitch + rect->x1 * hdc->byte_per_pixel; for (y = 0; y < h; y ++) { rt_memcpy(hw_ptr, rect_ptr, rect_pitch); hw_ptr += hw_pitch; rect_ptr += rect_pitch; } } else { rt_uint8_t* rect_ptr; /* get pixel pointer */ rect_ptr = hdc->pixels; for (y = 0; y < h; y ++) { hdc->hw_driver->draw_raw_hline(rect_ptr, rect->x1, rect->x1 + w, rect->y1 + y); rect_ptr += hdc->pitch; } } } else { rt_uint8_t* rect_ptr; rect_ptr = rtgui_malloc(hdc->pitch); if (rect_ptr == RT_NULL) return; /* no memory */ /* seek to the begin of pixel data */ rtgui_filerw_seek(hdc->filerw, hdc->pixel_offset, RTGUI_FILE_SEEK_SET); if (hdc->hw_driver->get_framebuffer() != RT_NULL) { rt_uint8_t* hw_ptr; /* get pixel pointer */ hw_ptr = hdc->hw_driver->get_framebuffer(); /* move hardware pixel pointer */ hw_ptr += rect->y1 * hdc->pitch + rect->x1 * hdc->byte_per_pixel; for (y = 0; y < h; y ++) { /* read pixel data */ if (rtgui_filerw_read(hdc->filerw, rect_ptr, 1, hdc->pitch) != hdc->pitch) break; /* read data failed */ rt_memcpy(hw_ptr, rect_ptr, rect_pitch); hw_ptr += hw_pitch; } } else { for (y = 0; y < h; y ++) { /* read pixel data */ if (rtgui_filerw_read(hdc->filerw, rect_ptr, 1, hdc->pitch) != hdc->pitch) break; /* read data failed */ hdc->hw_driver->draw_raw_hline(rect_ptr, rect->x1, rect->x1 + w, rect->y1 + y); } } rtgui_free(rect_ptr); } /* restore foreground */ rtgui_dc_set_color(dc, foreground); } void rtgui_image_hdc_init() { /* register hdc on image system */ rtgui_image_register_engine(&rtgui_image_hdc_engine); }