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Feat: Support viewing active window via online-host popup menu

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yuanyuanxiang
2026-06-15 16:14:01 +02:00
parent 931492a294
commit 2765d95950
13 changed files with 118 additions and 24 deletions
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34
client/ScreenSpy.cpp
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@@ -13,10 +13,11 @@
//////////////////////////////////////////////////////////////////////
CScreenSpy::CScreenSpy(ULONG ulbiBitCount, BYTE algo, BOOL vDesk, int gop, BOOL all, int level,
RECT rc, BOOL switchScreen, HWND hwnd) :
RECT rc, BOOL switchScreen, HWND hwnd, bool dynamicFg) :
ScreenCapture(ulbiBitCount, algo, all, level, rc, switchScreen)
{
m_hTargetWnd = hwnd;
m_bDynamicForeground = dynamicFg;
m_GOP = gop;
// 窗口捕获模式：用 DWM 真实边界覆盖基类的全屏尺寸，并缓存阴影偏移量
@@ -160,7 +161,36 @@ LPBYTE CScreenSpy::GetFirstScreenData(ULONG* ulFirstScreenLength)
VOID CScreenSpy::ScanScreen(HDC hdcDest, HDC hdcSour, ULONG ulWidth, ULONG ulHeight)
{
if (m_hTargetWnd) {
if (m_hTargetWnd || m_bDynamicForeground) {
// 动态前景模式：每帧查询当前前景窗口，切换时尺寸不变则直接复用，尺寸变化则触发重建
if (m_bDynamicForeground) {
HWND fg = GetForegroundWindow();
if (fg && fg != m_hTargetWnd) {
RECT wndRc = {}, frameRc = {};
GetWindowRect(fg, &wndRc);
frameRc = wndRc;
DwmGetWindowAttribute(fg, DWMWA_EXTENDED_FRAME_BOUNDS, &frameRc, sizeof(frameRc));
ULONG newW = (ULONG)(frameRc.right - frameRc.left);
ULONG newH = (ULONG)(frameRc.bottom - frameRc.top);
if (newW != m_ulFullWidth || newH != m_ulFullHeight) {
// 尺寸不同：触发重建，同时把新 HWND 写入 m_NextTargetWnd，
// 让 WorkThread 在重建前同步更新 CScreenManager::m_hTargetWnd
m_NextTargetWnd = fg;
m_bNeedRestart = true;
return;
}
// 尺寸相同：直接切换，更新阴影偏移和缓存，无需重建
m_ShadowLeft = frameRc.left - wndRc.left;
m_ShadowTop = frameRc.top - wndRc.top;
m_CachedWndW = wndRc.right - wndRc.left;
m_CachedWndH = wndRc.bottom - wndRc.top;
m_PendingWndW = m_PendingWndH = 0;
m_hTargetWnd = fg;
Mprintf("CScreenSpy: 前景切换(同尺寸) -> HWND=%p\n", fg);
}
if (!m_hTargetWnd) return; // 当前无前景窗口，冻结上一帧
}
// 最小化：不绘制，hdcDest 保留上一帧内容（远程端看到冻结画面）
if (IsIconic(m_hTargetWnd)) return;