int Set_PictureBox_Image_From_File(LCUI_Widget *widget, char *image_file) /* 功能:添加一个图片文件,并载入至图片盒子 */ { int value; graph_data data; LCUI_PictureBox *pic_box = (LCUI_PictureBox*) Get_Widget_PrivData(widget); LCUI_Graph *graph; if(init == IS_FALSE) { Queue_Init( &picbox_graph_mem, sizeof(graph_data), destroy_graph_data); init = IS_TRUE; } /* 如果在记录中没找到该部件,那么就分配内存,否则,直接使用那块内存 */ value = find_widget_data(widget); if(value == -1) { data.image = (LCUI_Graph*) calloc(1, sizeof(LCUI_Graph)); data.widget = widget; Queue_Add(&picbox_graph_mem, &data); } else { data = *(graph_data*)Queue_Get(&picbox_graph_mem, value); } graph = data.image; pic_box->image_status = IMAGE_STATUS_LOADING; /* 图片状态为正在载入 */ Set_PictureBox_Image_From_Graph(widget, NULL); value = Load_Image(image_file, graph);/* 载入图片文件 */ if(value != 0) { /* 载入失败 */ pic_box->image_status = IMAGE_STATUS_FAIL; Set_PictureBox_Image_From_Graph(widget, NULL); } else { /* 载入成功 */ pic_box->image_status = IMAGE_STATUS_SUCCESS; Set_PictureBox_Image_From_Graph(widget, graph); } return value; }
/* 设定图片文件中的图像为PictureBox部件显示的图像 */ LCUI_API int PictureBox_SetImageFile( LCUI_Widget *widget, char *image_file ) { int ret; graph_data data; LCUI_PictureBox *pic_box; LCUI_Graph *graph; pic_box = Widget_GetPrivData(widget); if( !graph_mem_init ) { Queue_Init( &picbox_graph_mem, sizeof(graph_data), destroy_graph_data); graph_mem_init = TRUE; } /* 如果在记录中没找到该部件,那么就分配内存,否则,直接使用那块内存 */ ret = find_widget_data(widget); if(ret == -1) { data.image = (LCUI_Graph*) calloc(1, sizeof(LCUI_Graph)); data.widget = widget; Queue_Add(&picbox_graph_mem, &data); } else { data = *(graph_data*)Queue_Get(&picbox_graph_mem, ret); } graph = data.image; pic_box->image_state = IMAGE_STATE_LOADING; /* 图片状态为正在载入 */ PictureBox_SetImage(widget, NULL); ret = Graph_LoadImage( image_file, graph );/* 载入图片文件 */ if( ret == 0 ) { /* 载入成功 */ pic_box->image_state = IMAGE_STATE_SUCCESS; PictureBox_SetImage(widget, graph); } else { /* 载入失败 */ pic_box->image_state = IMAGE_STATE_FAIL; PictureBox_SetImage(widget, NULL); } return ret; }
void Set_PictureBox_Image_From_Graph(LCUI_Widget *widget, LCUI_Graph *image) /* 功能:添加一个图片数据至图片盒子 */ { int i; float scale_x,scale_y; LCUI_Graph *graph = image; LCUI_PictureBox *pic_box = (LCUI_PictureBox*) Get_Widget_PrivData(widget); for(i = 0; i < 2; ++i) { /* 如果image有效 */ if(Graph_Valid(graph)) { /* 图片更换了,就释放缓存图形 */ Graph_Free(&pic_box->buff_graph); pic_box->image = graph; /* 读取的范区域为整个图片区域 */ pic_box->read_box.x = 0; pic_box->read_box.y = 0; pic_box->read_box.width = graph->width; pic_box->read_box.height = graph->height; pic_box->read_box.center_x = 0.5; pic_box->read_box.center_y = 0.5; pic_box->scale = 1.0; //printf("Set_PictureBox_Image_From_Graph(): img, w: %d, h: %d\n", graph->width, graph->height); //printf("Set_PictureBox_Image_From_Graph(): pb: w: %d, h: %d\n", widget->size.w, widget->size.h); //printf("Set_PictureBox_Image_From_Graph(): size mode: %d\n", pic_box->size_mode); switch(pic_box->size_mode) { case SIZE_MODE_BLOCK_ZOOM: case SIZE_MODE_ZOOM: //printf("Set_PictureBox_Image_From_Graph(): widget: w: %d, h: %d\n", widget->size.w, widget->size.h); if(widget->size.w <= 0 || widget->size.h <= 0) { //printf("Set_PictureBox_Image_From_Graph(): break\n"); break; } scale_x = (float)widget->size.w / pic_box->image->width; scale_y = (float)widget->size.h / pic_box->image->height; if(scale_x < scale_y) pic_box->scale = scale_x; else pic_box->scale = scale_y; //printf("Set_PictureBox_Image_From_Graph(): scale: %.4f, x: %.4f, y: %.4f\n", //pic_box->scale, scale_x, scale_y); Zoom_PictureBox_View_Area(widget, pic_box->scale); //printf("Set_PictureBox_Image_From_Graph(): read box: %d,%d,%d,%d\n", //pic_box->read_box.x, pic_box->read_box.y, //pic_box->read_box.width, pic_box->read_box.height); break; /* 正常模式 */ case SIZE_MODE_NORMAL: break; /* 拉伸模式 */ case SIZE_MODE_STRETCH: break; /* 平铺模式 */ case SIZE_MODE_TILE: break; case SIZE_MODE_CENTER: /* 判断图像的尺寸是否超出图片盒子的尺寸 */ if(pic_box->image->width >= widget->size.w) { pic_box->read_box.x = (pic_box->image->width - widget->size.w)/2.0; pic_box->read_box.width = widget->size.w; } if(pic_box->image->height >= widget->size.h) { pic_box->read_box.y = (pic_box->image->height - widget->size.h)/2.0; pic_box->read_box.height = widget->size.h; } break; default : break; } break; } else if(pic_box->image_status == IMAGE_STATUS_LOADING) { /* 使用对应的图片 */ if(Graph_Valid(&pic_box->initial_image)) { graph = &pic_box->initial_image; } else { return; } } else { /* 使用对应的图片 */ if(Graph_Valid(&pic_box->error_image)) { graph = &pic_box->error_image; pic_box->image_status = IMAGE_STATUS_FAIL; } else { return; } } } /* 如果记录中有该部件,那判断该部件使用的图像是否为同一个,不一样就释放之前的 */ graph_data *data; i = find_widget_data(widget); if(i >= 0) { data = (graph_data*)Queue_Get(&picbox_graph_mem, i); if(data->image != image) { Queue_Delete(&picbox_graph_mem, i); } } Draw_Widget(widget); }