/* 缩放PictureBox部件的图片浏览区域 */
LCUI_API int
PictureBox_ZoomViewArea( LCUI_Widget *widget, double scale )
{
LCUI_Graph buff, temp;
LCUI_PictureBox *pic_box;
pic_box = Widget_GetPrivData(widget);
if(!Graph_IsValid(pic_box->image)) {
return -1;
}
Graph_Init(&buff);
Graph_Init(&temp);
/* 有效范围为2%~2000% */
if(scale < 0.02) {
scale = 0.02;
}
if(scale > 20) {
scale = 20;
}
if(pic_box->size_mode != SIZE_MODE_ZOOM
&& pic_box->size_mode != SIZE_MODE_BLOCK_ZOOM) {
pic_box->size_mode = SIZE_MODE_ZOOM; /* 改为缩放模式 */
}
pic_box->scale = scale;
Update_BuffGraph(widget);
Update_ReadBox(widget);
Widget_Draw(widget);
Widget_Refresh(widget);
return 0;
}
int Zoom_PictureBox_View_Area(LCUI_Widget *widget, float scale)
/* 功能：缩放PictureBox部件的图片浏览区域 */
{
LCUI_Graph buff, temp;
LCUI_PictureBox *pic_box;
pic_box = Get_Widget_PrivData(widget);
if(!Graph_Valid(pic_box->image)) {
return -1;
}
Graph_Init(&buff);
Graph_Init(&temp);
/* 有效范围为2%~2000% */
if(scale < 0.02) {
scale = 0.02;
}
if(scale > 20) {
scale = 20;
}
if(pic_box->size_mode != SIZE_MODE_ZOOM
&& pic_box->size_mode != SIZE_MODE_BLOCK_ZOOM) {
pic_box->size_mode = SIZE_MODE_ZOOM; /* 改为缩放模式 */
}
pic_box->scale = scale;
Update_BuffGraph(widget);
Update_ReadBox(widget);
Draw_Widget(widget);
Refresh_Widget(widget);
return 0;
}