我想知道是否可以使用svg格式的图像和图标以及如何使用它。
我正在使用带脚本的nativescript-vue 6.0。
答案 0 :(得分：0)
我认为，显示矢量图形的最简单方法是图标字体。我使用插件nativescript-fonticon，并使用Fontello生成字体，该字体可让您上传自定义图标并设置unicode值。
一些提示：
ifndef __WIDGET__
#define __WIDGET__
#include <iostream>
class Widget {
public:
Widget(int i = 0) : val(i), valid(true) { std::cout << "Constructor called val " << val << std::endl; }
virtual void draw(double ScaleFactor = 1) const;
int getVal() const { return val; }
int redraw() const {/* std::cout << "Drawing Widget(" << val << ")\n"; */ return 0; }
bool isCertified() /*const*/ { return val % 2 == 0;} // whether the Widget is certified
friend std::ostream &operator<<(std::ostream &, const Widget &);
friend std::istream &operator>>(std::istream &, Widget &);
friend bool operator!=(const Widget &, const Widget &);
friend bool operator==(const Widget &, const Widget &);
friend bool operator<(const Widget &, const Widget &);
int test(); // perform a self-test; mark *this
// Venkata added.
// Copy constructor
Widget(const Widget ©) :
val(copy.val), valid(copy.valid)
{
std::cout << "Copy constructor called " << val << "\n"; // just to prove it works
}
~Widget() {
std::cout << "Widget destructor is called " << val << "\n"; // just to prove it works
}
// Overloaded assignment
Widget& operator= (const Widget &w);
protected:
int val;
private:
bool valid;
};
void Widget::draw(double ScaleFactor) const
{
std::cout << "Drawing widget (val = " << val << ") using ScaleFactor " <<
ScaleFactor << "..." << std::endl;
}
// A simplistic implementation of operator= (see better implementation below)
Widget& Widget::operator= (const Widget &w)
{
// do the copy
val = w.val;
valid = w.valid;
std::cout << "operator = called "<< val << "\n"; // just to prove it works
// return the existing object so we can chain this operator
return *this;
}
inline bool operator!=(const Widget &w1, const Widget &w2)
{
std::cout << "Widget operator != called " << std::endl;
return (w1.val != w2.val);
}
inline bool operator==(const Widget &w1, const Widget &w2)
{
std::cout << "Widget operator == called " << std::endl;
return (w1.val == w2.val);
}
inline bool operator<(const Widget &w1, const Widget &w2)
{
std::cout << "Widget operator < called " << std::endl;
return (w1.val < w2.val);
}
inline std::ostream &operator<<(std::ostream &o, const Widget &w)
{
return o << "Widget value is " << w.val;
}
inline std::istream &operator>>(std::istream &o, Widget &w)
{
return o >> w.val;
}
inline int Widget::test() // perform a self-test; mark *this
{
return valid = (val % 2 == 0); // only "valid" if it is even
}
// End Widget.h
#endif
否则插件将无法识别