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);
}