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Source.cpp
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Source.cpp
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#include "DirectOverlay.h"
#include <d2d1.h>
#include <dwrite.h>
#include <dwmapi.h>
#include <fstream>
#include <comdef.h>
#include <iostream>
#include <ctime>
#pragma comment(lib, "d2d1.lib")
#pragma comment(lib, "dwmapi.lib")
#pragma comment(lib, "dwrite.lib")
ID2D1Factory* factory;
ID2D1HwndRenderTarget* target;
ID2D1SolidColorBrush* solid_brush;
IDWriteFactory* w_factory;
IDWriteTextFormat* w_format;
IDWriteTextLayout* w_layout;
HWND overlayWindow;
HINSTANCE appInstance;
HWND targetWindow;
HWND enumWindow = NULL;
time_t preTime = clock();
time_t showTime = clock();
int fps = 0;
bool o_Foreground = false;
bool o_DrawFPS = false;
bool o_VSync = false;
std::wstring fontname = L"Courier";
DirectOverlayCallback drawLoopCallback = NULL;
LRESULT CALLBACK WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
void DrawString(std::string str, float fontSize, float x, float y, float r, float g, float b, float a)
{
RECT re;
GetClientRect(overlayWindow, &re);
FLOAT dpix, dpiy;
dpix = static_cast<float>(re.right - re.left);
dpiy = static_cast<float>(re.bottom - re.top);
HRESULT res = w_factory->CreateTextLayout(std::wstring(str.begin(), str.end()).c_str(), str.length() + 1, w_format, dpix, dpiy, &w_layout);
if (SUCCEEDED(res))
{
DWRITE_TEXT_RANGE range = { 0, str.length() };
w_layout->SetFontSize(fontSize, range);
solid_brush->SetColor(D2D1::ColorF(r, g, b, a));
target->DrawTextLayout(D2D1::Point2F(x, y), w_layout, solid_brush);
w_layout->Release();
w_layout = NULL;
}
}
void DrawBox(float x, float y, float width, float height, float thickness, float r, float g, float b, float a, bool filled)
{
solid_brush->SetColor(D2D1::ColorF(r, g, b, a));
if (filled) target->FillRectangle(D2D1::RectF(x, y, x + width, y + height), solid_brush);
else target->DrawRectangle(D2D1::RectF(x, y, x + width, y +height), solid_brush, thickness);
}
void DrawLine(float x1, float y1, float x2, float y2, float thickness, float r, float g, float b, float a) {
solid_brush->SetColor(D2D1::ColorF(r, g, b, a));
target->DrawLine(D2D1::Point2F(x1, y1), D2D1::Point2F(x2, y2), solid_brush, thickness);
}
void DrawCircle(float x, float y, float radius, float thickness, float r, float g, float b, float a, bool filled)
{
solid_brush->SetColor(D2D1::ColorF(r, g, b, a));
if (filled) target->FillEllipse(D2D1::Ellipse(D2D1::Point2F(x, y), radius, radius), solid_brush);
else target->DrawEllipse(D2D1::Ellipse(D2D1::Point2F(x, y), radius, radius), solid_brush, thickness);
}
void DrawEllipse(float x, float y, float width, float height, float thickness, float r, float g, float b, float a, bool filled)
{
solid_brush->SetColor(D2D1::ColorF(r, g, b, a));
if (filled) target->FillEllipse(D2D1::Ellipse(D2D1::Point2F(x, y), width, height), solid_brush);
else target->DrawEllipse(D2D1::Ellipse(D2D1::Point2F(x, y), width, height), solid_brush, thickness);
}
void d2oSetup(HWND tWindow) {
targetWindow = tWindow;
WNDCLASS wc = { };
wc.lpfnWndProc = WindowProc;
wc.hInstance = GetModuleHandle(0);
wc.lpszClassName = "d2do";
RegisterClass(&wc);
overlayWindow = CreateWindowEx(WS_EX_LAYERED | WS_EX_TRANSPARENT | WS_EX_TOPMOST,
wc.lpszClassName, "D2D Overlay", WS_POPUP, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
NULL, NULL, wc.hInstance, NULL);
MARGINS mar = { -1 };
DwmExtendFrameIntoClientArea(overlayWindow, &mar);
D2D1CreateFactory(D2D1_FACTORY_TYPE_MULTI_THREADED, &factory);
factory->CreateHwndRenderTarget(
D2D1::RenderTargetProperties(D2D1_RENDER_TARGET_TYPE_DEFAULT,
D2D1::PixelFormat(DXGI_FORMAT_UNKNOWN, D2D1_ALPHA_MODE_PREMULTIPLIED)),
D2D1::HwndRenderTargetProperties(overlayWindow, D2D1::SizeU(200, 200),
D2D1_PRESENT_OPTIONS_IMMEDIATELY), &target);
target->CreateSolidColorBrush(D2D1::ColorF(0.0f, 0.0f, 0.0f), &solid_brush);
target->SetAntialiasMode(D2D1_ANTIALIAS_MODE_PER_PRIMITIVE);
DWriteCreateFactory(DWRITE_FACTORY_TYPE_SHARED, __uuidof(IDWriteFactory), reinterpret_cast<IUnknown**>(&w_factory));
w_factory->CreateTextFormat(fontname.c_str(), NULL, DWRITE_FONT_WEIGHT_NORMAL,
DWRITE_FONT_STYLE_NORMAL, DWRITE_FONT_STRETCH_NORMAL, 10.0f, L"en-us", &w_format);
}
void mainLoop() {
MSG message;
message.message = WM_NULL;
ShowWindow(overlayWindow, 1);
UpdateWindow(overlayWindow);
SetLayeredWindowAttributes(overlayWindow, RGB(0, 0, 0), 255, LWA_ALPHA);
if (message.message != WM_QUIT)
{
if (PeekMessage(&message, overlayWindow, NULL, NULL, PM_REMOVE))
{
TranslateMessage(&message);
DispatchMessage(&message);
}
UpdateWindow(overlayWindow);
WINDOWINFO info;
ZeroMemory(&info, sizeof(info));
info.cbSize = sizeof(info);
GetWindowInfo(targetWindow, &info);
D2D1_SIZE_U siz;
siz.height = ((info.rcClient.bottom) - (info.rcClient.top));
siz.width = ((info.rcClient.right) - (info.rcClient.left));
if (!IsIconic(overlayWindow)) {
SetWindowPos(overlayWindow, NULL, info.rcClient.left, info.rcClient.top, siz.width, siz.height, SWP_SHOWWINDOW);
target->Resize(&siz);
}
target->BeginDraw();
target->Clear(D2D1::ColorF(0, 0, 0, 0));
if (drawLoopCallback != NULL) {
if (o_Foreground) {
if (GetForegroundWindow() == targetWindow)
goto toDraw;
else goto noDraw;
}
toDraw:
time_t postTime = clock();
time_t frameTime = postTime - preTime;
preTime = postTime;
if (o_DrawFPS) {
if (postTime - showTime > 100) {
fps = 1000 / (float)frameTime;
showTime = postTime;
}
DrawString(std::to_string(fps), 20, siz.width - 50, 0, 0, 1, 0);
}
if (o_VSync) {
int pausetime = 17 - frameTime;
if (pausetime > 0 && pausetime < 30) {
Sleep(pausetime);
}
}
drawLoopCallback(siz.width, siz.height);
}
noDraw:
target->EndDraw();
Sleep(1);
}
}
LRESULT CALLBACK WindowProc(HWND hWnd, UINT uiMessage, WPARAM wParam, LPARAM lParam)
{
switch (uiMessage)
{
case WM_CLOSE:
DestroyWindow(hWnd);
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
default:
return DefWindowProc(hWnd, uiMessage, wParam, lParam);
}
return 0;
}
BOOL CALLBACK EnumWindowsProc(HWND hwnd, LPARAM lParam)
{
DWORD lpdwProcessId;
GetWindowThreadProcessId(hwnd, &lpdwProcessId);
if (lpdwProcessId == GetCurrentProcessId())
{
enumWindow = hwnd;
return FALSE;
}
return TRUE;
}
DWORD WINAPI OverlayThread(LPVOID lpParam)
{
if (lpParam == NULL) {
EnumWindows(EnumWindowsProc, NULL);
}
else {
enumWindow = (HWND)lpParam;
}
d2oSetup(enumWindow);
for (;;) {
mainLoop();
}
}
void DirectOverlaySetup(DirectOverlayCallback callback) {
drawLoopCallback = callback;
CreateThread(0, 0, OverlayThread, NULL, 0, NULL);
}
void DirectOverlaySetup(DirectOverlayCallback callback, HWND _targetWindow) {
drawLoopCallback = callback;
CreateThread(0, 0, OverlayThread, _targetWindow, 0, NULL);
}
void DirectOverlaySetOption(DWORD option) {
if (option & D2DOV_REQUIRE_FOREGROUND) o_Foreground = true;
if (option & D2DOV_DRAW_FPS) o_DrawFPS = true;
if (option & D2DOV_VSYNC) o_VSync = true;
if (option & D2DOV_FONT_ARIAL) fontname = L"arial";
if (option & D2DOV_FONT_COURIER) fontname = L"Courier";
if (option & D2DOV_FONT_CALIBRI) fontname = L"Calibri";
if (option & D2DOV_FONT_GABRIOLA) fontname = L"Gabriola";
if (option & D2DOV_FONT_IMPACT) fontname = L"Impact";
}