【STM32H7S78-DK】 七 特殊功能计算器

一、打开touchgfx designer ，加上提按键0,1,2,3,4,5,6,7,8,9,a,b,c,d,e,f,<<,>>,%,*,/,clear,=按键。
如下：

二、加上每个按键的虚函数。如下是0按键的，其他类似。

三、增加textArea1，textArea3，textArea3。分别加入wildcard1 并且勾选使用这个缓冲更新数据。

四、给每个设置字体为Large,40pt

并且在Texts的Typographies里面设置wildcard Ranges 0~f

五、Screep1view.hpp中加入头文件：

#ifndef SCREEN1VIEW_HPP
#define SCREEN1VIEW_HPP

#include <gui_generated/screen1_screen/Screen1ViewBase.hpp>
#include <gui/screen1_screen/Screen1Presenter.hpp>

class Screen1View : public Screen1ViewBase
{
public:
    Screen1View();
    virtual ~Screen1View() {}
    virtual void setupScreen();
    virtual void tearDownScreen();
    virtual void function_bt0();
    virtual void function_bt1();
    virtual void function_bt2();
    virtual void function_bt3();
    virtual void function_bt4();
    virtual void function_bt5();
    virtual void function_bt6();
    virtual void function_bt7();
    virtual void function_bt8();
    virtual void function_bt9();
    virtual void function_bta();
    virtual void function_btb();
    virtual void function_btc();
    virtual void function_btd();
    virtual void function_bte();
    virtual void function_btf();
    virtual void function_bt_eq();
    virtual void function_bt_right();
    virtual void function_bt_left();
    virtual void function_bt_mul();
    virtual void function_bt_els();
    virtual void function_bt_div();
    virtual void function_bt_clr();
    void updateGFXElements(uint8_t bt_val);
protected:
    uint32_t dat_a;
    uint32_t dat_b;
    uint32_t dat_c;
    uint8_t point;
    char oldchar;
};

#endif // SCREEN1VIEW_HPP

六、Screep1view.cpp中加入虚函数和更新按键函数的具体实现如下：

#include <gui/screen1_screen/Screen1View.hpp>

Screen1View::Screen1View()
{

}

void Screen1View::setupScreen()
{
    Screen1ViewBase::setupScreen();
}

void Screen1View::tearDownScreen()
{
    Screen1ViewBase::tearDownScreen();
}
void Screen1View::function_bt0()
{
        updateGFXElements(0);
}
void Screen1View::function_bt1()
{
        updateGFXElements(1);
}
void Screen1View::function_bt2()
{
        updateGFXElements(2);
}
void Screen1View::function_bt3()
{
        updateGFXElements(3);
}
void Screen1View::function_bt4()
{
        updateGFXElements(4);
}
void Screen1View::function_bt5()
{
       updateGFXElements(5);
}
void Screen1View::function_bt6()
{
        updateGFXElements(6);
}
void Screen1View::function_bt7()
{
        updateGFXElements(7);
}
void Screen1View::function_bt8()
{
        updateGFXElements(8);
}
void Screen1View::function_bt9()
{
        updateGFXElements(9);
}
void Screen1View::function_bta()
{
        updateGFXElements(0x0a);
}
void Screen1View::function_btb()
{
       updateGFXElements(0x0b);
}
void Screen1View::function_btc()
{
        updateGFXElements(0x0c);
}
void Screen1View::function_btd()
{
        updateGFXElements(0x0d);
}
void Screen1View::function_bte()
{
        updateGFXElements(0x0e);
}
void Screen1View::function_btf()
{
       updateGFXElements(0x0f);
}
void Screen1View::function_bt_eq()
{
        updateGFXElements(0x20);
}
void Screen1View::function_bt_right()
{
        updateGFXElements(0x21);
}
void Screen1View::function_bt_left()
{
        updateGFXElements(0x22);
}
void Screen1View::function_bt_els()
{
        updateGFXElements(0x23);
}
void Screen1View::function_bt_mul()
{
        updateGFXElements(0x24);
}
void Screen1View::function_bt_div()
{
        updateGFXElements(0x25);
}
void Screen1View::function_bt_clr()
{
       updateGFXElements(0x26);
}
void Screen1View::updateGFXElements(uint8_t bt_val)
{
        if( bt_val <= 0x0f)
        {
                if(point == 0)
                {
                        dat_a <<=4;
                        dat_a +=bt_val;
                }
                else
                {
                        dat_b <<=4;
                        dat_b +=bt_val;
                }
        }
        else
        {       switch(bt_val)
                {
                        case 0x20: //=
                                if(oldchar == 0x21)
                                         dat_c = dat_a >> dat_b;
                                else
                                {
                                        if(oldchar == 0x22)
                                        { 
                                              dat_c =dat_a << dat_b;
                                        }
                                        else
                                        {
                                                if(oldchar == 0x23)
                                                {
                                                        if(dat_b !=0)
                                                                dat_c =dat_a%dat_b;
                                                }
                                                else
                                                {
                                                       if(oldchar == 0x24) 
                                                                dat_c =dat_a*dat_b;
                                                        else
                                                        {
                                                                if(oldchar == 0x25)
                                                                {
                                                                        if(dat_b !=0)
                                                                                dat_c =dat_a/dat_b;
                                                                }
                                                                else
                                                                {
                                                                        if(oldchar == 0x26)
                                                                        {
                                                                                point =0;oldchar =0x0;dat_a=dat_b=dat_c=0;
                                                                        }
                                                                }
                                                        }
                                                }
                                        }     

                                }
                               point =0;oldchar =0;         
                        break;
                        case 0x21:point =1;oldchar =0x21;break;//>>
                        case 0x22:point =1;oldchar =0x22;break;//<<
                        case 0x23:point =1;oldchar =0x23;break;//%
                        case 0x24:point =1;oldchar =0x24;break;//*
                        case 0x25:point =1;oldchar =0x25;break;//div
                        case 0x26:point =0;oldchar =0x0;dat_a=dat_b=dat_c=0;break;//clear
                }      
        }
        
        touchgfx::Unicode::snprintf(textArea1Buffer,TEXTAREA1_SIZE,"%x", dat_a );
        textArea1.invalidate();
        touchgfx::Unicode::snprintf(textArea2Buffer,TEXTAREA2_SIZE,"%x", dat_b );
        textArea2.invalidate();
        touchgfx::Unicode::snprintf(textArea3Buffer,TEXTAREA3_SIZE,"%x", dat_c );
        textArea3.invalidate();
        
}

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