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@Noscka
Noscka committed Feb 27, 2022
1 parent e7aa0c7 commit ccafd48
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Showing 2 changed files with 56 additions and 28 deletions.
80 changes: 56 additions & 24 deletions SWT/SWT.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,7 @@
#include <tchar.h>
#include <Windows.h>
#include <WinUser.h>
#include <string>

#include "./TinyExpr/tinyexpr.h"

Expand All @@ -11,7 +12,7 @@ bool Enabled = true;

// Equation Char Array
char Equation[20] = {};
int EquationArrayIndex = 0; // Equation Array Index
int EquationArrayIndexPointer = 0; // Equation Array Index Pointer

// Hook Variable
HHOOK _hook;
Expand All @@ -38,8 +39,8 @@ bool AddToEquation(char Character)
{
try
{
Equation[EquationArrayIndex] = Character;
EquationArrayIndex++;
Equation[EquationArrayIndexPointer] = Character;
EquationArrayIndexPointer++;
}
catch(...)
{
Expand All @@ -48,6 +49,17 @@ bool AddToEquation(char Character)
return true;
}

void clear_screen(char fill = ' ')
{
COORD tl = {0,0};
CONSOLE_SCREEN_BUFFER_INFO s;
HANDLE console = GetStdHandle(STD_OUTPUT_HANDLE);
GetConsoleScreenBufferInfo(console, &s);
DWORD written, cells = s.dwSize.X * s.dwSize.Y;
FillConsoleOutputCharacter(console, fill, cells, tl, &written);
FillConsoleOutputAttribute(console, s.wAttributes, cells, tl, &written);
SetConsoleCursorPosition(console, tl);
}

LRESULT CALLBACK HookCallback(int nCode, WPARAM wParam, LPARAM lParam)
{
Expand All @@ -57,6 +69,7 @@ LRESULT CALLBACK HookCallback(int nCode, WPARAM wParam, LPARAM lParam)
{
switch(wParam)
{
// if keydown hook event (allows for holding and "spamming" key)
case WM_KEYDOWN:
// lParam is the pointer to the struct containing the data needed, so cast and assign it to kdbStruct.
kbdStruct = *((KBDLLHOOKSTRUCT*)lParam);
Expand All @@ -72,12 +85,12 @@ LRESULT CALLBACK HookCallback(int nCode, WPARAM wParam, LPARAM lParam)
GetKeyState(VK_MENU);
GetKeyboardState(KeyboardState);

// Get the key hit while taking into account the modifiers (shift+/ -> ?)
// Get the key hit while taking into account the modifiers (shift+5 -> %)
ToUnicodeEx((UINT)kbdStruct.vkCode, (UINT)kbdStruct.scanCode, KeyboardState, UnicodeCharacter, sizeof(UnicodeCharacter) / sizeof(*UnicodeCharacter) - 1, (UINT)kbdStruct.flags, GetKeyboardLayout(0));

// Coord for backspace cursor position editing
COORD NewCoord;

switch(UnicodeCharacter[0])
{
case 48: // 0
Expand All @@ -95,21 +108,16 @@ LRESULT CALLBACK HookCallback(int nCode, WPARAM wParam, LPARAM lParam)
return -1;

case 8: // {BACKSPACE}
if(EquationArrayIndex > 0)
if(EquationArrayIndexPointer > 0)
{
NewCoord = {GetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE)).X, GetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE)).Y};
NewCoord.X -= 1;
SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), NewCoord);
printf(" ");
SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), NewCoord);
EquationArrayIndex--;
NewCoord = {(SHORT)(GetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE)).X - 1), GetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE)).Y}; // create new coord with x-1 and same y
SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), NewCoord); // use new coord
printf(" "); // delete character
SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), NewCoord); // go back 1 space
EquationArrayIndexPointer--;
}

Equation[EquationArrayIndex] = NULL;
return -1;

case 13: // {ENTER}
std::cout << Equation << " = " << te_interp(Equation, 0) << "\n";
Equation[EquationArrayIndexPointer] = NULL;
return -1;

case 47: // /
Expand All @@ -132,14 +140,38 @@ LRESULT CALLBACK HookCallback(int nCode, WPARAM wParam, LPARAM lParam)
AddToEquation(UnicodeCharacter[0]);
return -1;

case 61: // =
std::cout << Equation << " = " << te_interp(Equation, 0);
case 46: // .
printf(".");
AddToEquation(UnicodeCharacter[0]);
return -1;

default:
//std::wcout << "ToUnicodeEx: " << UnicodeCharacter << '\n';
//std::wcout << "ToUnicodeEx INT: " << (int)UnicodeCharacter[0] << '\n';
break;
case 13: // {ENTER}
case 61: // =
Enabled = false; // "disable" hook

clear_screen();

double EquationDoubleOutput = te_interp(Equation, 0); // intepret and solve the equation

std::cout << Equation << " = " << EquationDoubleOutput << "\n"; // display full equation with answer

// clear Equation array and zero Array Index Pointer
std::fill(std::begin(Equation), std::end(Equation), 0);
EquationArrayIndexPointer = 0;

// convert Equation Answer to string with removing trailing 0s
std::string EquationOutput = std::to_string(EquationDoubleOutput);
EquationOutput.erase(EquationOutput.find_last_not_of('0') + 1, std::string::npos);
EquationOutput.erase(EquationOutput.find_last_not_of('.') + 1, std::string::npos);

// for loop for each character in equation answer and simulate keyboard event
for(char ch : EquationOutput)
{
keybd_event(VkKeyScanExA(ch, GetKeyboardLayout(0)), (UINT)kbdStruct.scanCode, 0, 0);
keybd_event(VkKeyScanExA(ch, GetKeyboardLayout(0)), (UINT)kbdStruct.scanCode, KEYEVENTF_KEYUP,0);
}

return -1;
}
}
}
Expand Down Expand Up @@ -174,7 +206,7 @@ int main()

enum
{
KEYID = 1 // Ctrl+Shift+alt+k key ID
KEYID = 1 // Ctrl+Shift+alt+k - Enable Input
};
RegisterHotKey(0, KEYID, MOD_SHIFT | MOD_CONTROL | MOD_ALT, 'K'); // register 1 key as hotkey
MSG msg;
Expand Down
4 changes: 0 additions & 4 deletions SWT/SWT.vcxproj.filters
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Original file line number Diff line number Diff line change
Expand Up @@ -9,10 +9,6 @@
<UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
<Extensions>h;hh;hpp;hxx;h++;hm;inl;inc;ipp;xsd</Extensions>
</Filter>
<Filter Include="Resource Files">
<UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
<Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
</Filter>
</ItemGroup>
<ItemGroup>
<ClCompile Include="SWT.cpp">
Expand Down

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