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;
}
static void Exec_Update_ProgressBar(LCUI_Widget *widget)
/* 功能：更新进度条的图形 */
{
LCUI_ProgressBar *pb = (LCUI_ProgressBar*)Get_Widget_PrivData(widget);
if(Strcmp(&widget->style, "dynamic") == 0) {
/* 绘制空槽 */
Draw_Empty_Slot(&widget->graph, widget->size.w, widget->size.h);
Set_Widget_Border_Style(widget, BORDER_STYLE_NONE);
/* 载入两个图形 */
if(!Graph_Valid(&pb->fore_graph))
Load_Graph_ProgressBar_Fore(&pb->fore_graph);
if(!Graph_Valid(&pb->flash_image))
Load_Graph_ProgressBar_Img(&pb->flash_image);
Resize_Widget(pb->img_pic_box, Get_Graph_Size(&pb->flash_image));
/* 让图片盒子显示这个图形 */
Set_PictureBox_Image_From_Graph(pb->img_pic_box, &pb->flash_image);
} else {
Strcpy(&widget->style, "classic");
if(!Graph_Valid(&pb->fore_graph))
Graph_Create(&pb->fore_graph, 10, widget->size.h);
Graph_Fill_Color(&pb->fore_graph, RGB(80,80,200));
Graph_Fill_Alpha(&pb->fore_graph, 255);
}
/* 让图片盒子显示这个图形 */
Set_PictureBox_Image_From_Graph(pb->fore_pic_box, &pb->fore_graph);
int width, height;
/* 计算进度条的长度 */
width = (widget->size.w - widget->border.left - widget->border.right)
* pb->value / pb->max_value + 0.5;
height = widget->size.h - widget->border.top - widget->border.bottom;
Move_Widget(pb->fore_pic_box, Pos(widget->border.left, widget->border.top));
/* 改变进度条的尺寸 */
Resize_Widget(pb->fore_pic_box, Size(width, height));
}
void *change_graph(void *arg)
/* 功能：改变显示的图形 */
{
LCUI_Widget *widget = (LCUI_Widget *)arg;
int i;
LCUI_Graph frame, temp;
Graph_Init(&frame);/* 初始化 */
Load_Image("ring.png", &frame);/* 载入之 */
/* 居中显示图形 */
Set_Widget_Align(widget, ALIGN_MIDDLE_CENTER, Pos(0, -20));
Set_PictureBox_Size_Mode(widget, SIZE_MODE_CENTER);
Show_Widget(widget);
while(1)
{
Set_PictureBox_Image_From_Graph(widget, &frame);
for(i=10; i<=360; i+=10)
{
Rotate_Graph(&frame, i, &temp);
Set_PictureBox_Image_From_Graph(widget, &temp);
usleep(20000);
}
}
LCUI_Thread_Exit(NULL);
}
void Set_Window_Title_Icon(LCUI_Widget *window, LCUI_Graph *icon)
/* 功能：自定义指定窗口的标题栏图标 */
{
LCUI_Graph *image;
LCUI_Widget *title_widget;
LCUI_TitleBar *title_data;
title_widget = Get_Window_TitleBar(window);
title_data = (LCUI_TitleBar *)Get_Widget_PrivData(title_widget);
image = Get_PictureBox_Graph(title_data->icon_box);
Graph_Free(image);/* 释放PictureBox部件内的图像占用的资源 */
if(icon == NULL) {
return;
}
/* 设置新图标 */
Set_PictureBox_Image_From_Graph(title_data->icon_box, icon);
Set_Widget_Align(title_data->icon_box, ALIGN_MIDDLE_LEFT, Pos(3,0));
Set_Widget_Align(title_data->label, ALIGN_MIDDLE_LEFT, Pos(23,0));
}
