void Set_PictureBox_Size_Mode(LCUI_Widget *widget, int mode)
/* 功能：设定图片盒子的图像显示模式 */
{
LCUI_PictureBox *pic_box = (LCUI_PictureBox*)
Get_Widget_PrivData(widget);
if(pic_box->size_mode == mode) return;
float scale_x,scale_y;
pic_box->size_mode = mode;
if(pic_box->image == NULL) return;
switch(mode) {
case SIZE_MODE_BLOCK_ZOOM:
case SIZE_MODE_ZOOM:
if( widget->size.w <= 0 || widget->size.h <= 0) {
pic_box->scale = 1.0;
} else {
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;
}
Zoom_PictureBox_View_Area(widget, pic_box->scale);
break;
default:
pic_box->scale = 1.0;
break;
}
Draw_Widget(widget);
}
static void Exec_Resize_PictureBox(LCUI_Widget *widget)
/* 功能：改变PictureBox部件的尺寸 */
{
LCUI_PictureBox *pic_box = (LCUI_PictureBox*)
Get_Widget_PrivData(widget);
float scale_x, scale_y;
if( widget->size.w <= 0 || widget->size.h <= 0 ) {
Refresh_Widget(widget);
return;
}
switch(pic_box->size_mode) {
case SIZE_MODE_BLOCK_ZOOM:
/* 重新改变图像浏览区域的尺寸，这个尺寸指的是从源图像中截取出的图像的尺寸 */
Resize_PictureBox_View_Area(
widget,
widget->size.w / pic_box->scale,
widget->size.h / pic_box->scale );
/* 以现在的缩放比例重新生成缩放后的图像 */
Zoom_PictureBox_View_Area(widget, pic_box->scale);
break;
case SIZE_MODE_ZOOM:
if(widget->size.w <= 0 || widget->size.h <= 0) {
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("Exec_Resize_PictureBox(): scale: %.4f, x: %.4f, y: %.4f\n", pic_box->scale, scale_x, scale_y);
Zoom_PictureBox_View_Area(widget, pic_box->scale);
//printf("Exec_Resize_PictureBox(): 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;
case SIZE_MODE_NORMAL:/* 正常模式 */
case SIZE_MODE_STRETCH:/* 拉伸模式 */
case SIZE_MODE_TILE:/* 平铺模式 */
break;
case SIZE_MODE_CENTER: /* 居中模式 */
Resize_PictureBox_View_Area(widget, widget->size.w, widget->size.h);
break;
default : break;
}
Refresh_Widget(widget);
}
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);
}