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Feature: right-click region screenshot in non-control mode

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yuanyuanxiang
2026-05-07 23:05:05 +02:00
parent 566f5b8d42
commit 731ff7a894
6 changed files with 193 additions and 40 deletions
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206
server/2015Remote/ScreenSpyDlg.cpp
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@@ -489,6 +489,8 @@ BEGIN_MESSAGE_MAP(CScreenSpyDlg, CDialog)
ON_WM_VSCROLL()
ON_WM_LBUTTONDOWN()
ON_WM_LBUTTONUP()
ON_WM_RBUTTONDOWN()
ON_WM_RBUTTONUP()
ON_WM_MOUSEWHEEL()
ON_WM_MOUSEMOVE()
ON_WM_MOUSELEAVE()
@@ -689,7 +691,7 @@ BOOL CScreenSpyDlg::OnInitDialog()
if (m_bIsCtrl) {
ImmAssociateContext(m_hWnd, NULL); // 控制模式：禁用 IME
}
m_bIsTraceCursor = FALSE; //不是跟踪
m_bIsTraceCursor = !m_bIsCtrl; // 非控制状态，则跟踪鼠标
m_ClientCursorPos.x = 0;
m_ClientCursorPos.y = 0;
m_bCursorIndex = 0;
@@ -1641,16 +1643,19 @@ void CScreenSpyDlg::OnPaint()
BitBlt(m_hFullDC, 0, 0, srcW, srcH, m_hFullMemDC, m_ulHScrollPos, m_ulVScrollPos, SRCCOPY);
}
// 绘制框选矩形
if (m_bSelectingZoom) {
CRect rcSelect;
rcSelect.left = min(m_ptZoomStart.x, m_ptZoomCurrent.x);
rcSelect.top = min(m_ptZoomStart.y, m_ptZoomCurrent.y);
rcSelect.right = max(m_ptZoomStart.x, m_ptZoomCurrent.x);
rcSelect.bottom = max(m_ptZoomStart.y, m_ptZoomCurrent.y);
// 绘制框选矩形（左键放大用红色，右键截图用绿色，二者颜色错开避免误操作）
if (m_bSelectingZoom || m_bSelectingShot) {
CPoint ptStart = m_bSelectingZoom ? m_ptZoomStart : m_ptShotStart;
CPoint ptCur = m_bSelectingZoom ? m_ptZoomCurrent : m_ptShotCurrent;
COLORREF clr = m_bSelectingZoom ? RGB(255, 0, 0) : RGB(0, 180, 0);
// 使用虚线边框绘制选择框
HPEN hPen = CreatePen(PS_DASH, 1, RGB(255, 0, 0));
CRect rcSelect;
rcSelect.left = min(ptStart.x, ptCur.x);
rcSelect.top = min(ptStart.y, ptCur.y);
rcSelect.right = max(ptStart.x, ptCur.x);
rcSelect.bottom = max(ptStart.y, ptCur.y);
HPEN hPen = CreatePen(PS_DASH, 1, clr);
HPEN hOldPen = (HPEN)SelectObject(m_hFullDC, hPen);
HBRUSH hOldBrush = (HBRUSH)SelectObject(m_hFullDC, GetStockObject(NULL_BRUSH));
Rectangle(m_hFullDC, rcSelect.left, rcSelect.top, rcSelect.right, rcSelect.bottom);
@@ -2849,29 +2854,10 @@ void CScreenSpyDlg::OnLButtonUp(UINT nFlags, CPoint point)
}
// 将屏幕坐标转换为原图坐标
int srcW = m_BitmapInfor_Full->bmiHeader.biWidth;
int srcH = m_BitmapInfor_Full->bmiHeader.biHeight;
int dstW = m_CRect.Width();
int dstH = m_CRect.Height();
if (m_bAdaptiveSize) {
m_rcZoomSrc.left = (int)(rcSelect.left * m_wZoom);
m_rcZoomSrc.top = (int)(rcSelect.top * m_hZoom);
m_rcZoomSrc.right = (int)(rcSelect.right * m_wZoom);
m_rcZoomSrc.bottom = (int)(rcSelect.bottom * m_hZoom);
} else {
m_rcZoomSrc.left = rcSelect.left + m_ulHScrollPos;
m_rcZoomSrc.top = rcSelect.top + m_ulVScrollPos;
m_rcZoomSrc.right = rcSelect.right + m_ulHScrollPos;
m_rcZoomSrc.bottom = rcSelect.bottom + m_ulVScrollPos;
if (!ScreenRectToImageRect(rcSelect, m_rcZoomSrc)) {
return;
}
// 限制在原图范围内
m_rcZoomSrc.left = max(0L, min(m_rcZoomSrc.left, (LONG)srcW));
m_rcZoomSrc.top = max(0L, min(m_rcZoomSrc.top, (LONG)srcH));
m_rcZoomSrc.right = max(0L, min(m_rcZoomSrc.right, (LONG)srcW));
m_rcZoomSrc.bottom = max(0L, min(m_rcZoomSrc.bottom, (LONG)srcH));
// 进入放大状态
m_bZoomedIn = true;
Invalidate();
@@ -2897,6 +2883,145 @@ void CScreenSpyDlg::OnLButtonUp(UINT nFlags, CPoint point)
}
void CScreenSpyDlg::OnRButtonDown(UINT nFlags, CPoint point)
{
// 非控制模式下：右键框选 → 截图保存。控制模式下右键由 PreTranslateMessage 转发给客户端。
if (!m_bIsCtrl && !m_bIsFirst && m_BitmapInfor_Full) {
// 与左键互斥：左键正在框选/拖拽时不接管右键，避免冲突
if (m_bSelectingZoom || m_bZoomDragging) {
return;
}
m_bSelectingShot = true;
m_ptShotStart = point;
m_ptShotCurrent = point;
SetCapture();
return;
}
__super::OnRButtonDown(nFlags, point);
}
void CScreenSpyDlg::OnRButtonUp(UINT nFlags, CPoint point)
{
if (!m_bIsCtrl && !m_bIsFirst && m_BitmapInfor_Full && m_bSelectingShot) {
ReleaseCapture();
m_bSelectingShot = false;
CRect rcSelect;
rcSelect.left = min(m_ptShotStart.x, point.x);
rcSelect.top = min(m_ptShotStart.y, point.y);
rcSelect.right = max(m_ptShotStart.x, point.x);
rcSelect.bottom = max(m_ptShotStart.y, point.y);
// 太小视为误触（与左键放大同阈值）
if (rcSelect.Width() < 20 || rcSelect.Height() < 20) {
Invalidate(FALSE);
return;
}
CRect rcImage;
if (ScreenRectToImageRect(rcSelect, rcImage) &&
rcImage.Width() > 0 && rcImage.Height() > 0)
{
SaveRegionScreenshot(rcImage);
}
Invalidate(FALSE); // 清掉绿色选框
return;
}
__super::OnRButtonUp(nFlags, point);
}
// 屏幕（窗口）选框 → 原图坐标，考虑放大状态、自适应、滚动
bool CScreenSpyDlg::ScreenRectToImageRect(const CRect& rcScreen, CRect& rcImage)
{
if (!m_BitmapInfor_Full) return false;
int srcW = m_BitmapInfor_Full->bmiHeader.biWidth;
int srcH = m_BitmapInfor_Full->bmiHeader.biHeight;
if (srcW <= 0 || srcH <= 0) return false;
if (m_bZoomedIn && !m_rcZoomSrc.IsRectEmpty()) {
// 放大状态：屏幕坐标 → 当前可视的子区域内的原图坐标
int dstW = m_CRect.Width();
int dstH = m_CRect.Height();
if (dstW <= 0 || dstH <= 0) return false;
double scaleX = (double)m_rcZoomSrc.Width() / dstW;
double scaleY = (double)m_rcZoomSrc.Height() / dstH;
rcImage.left = (int)(m_rcZoomSrc.left + rcScreen.left * scaleX);
rcImage.top = (int)(m_rcZoomSrc.top + rcScreen.top * scaleY);
rcImage.right = (int)(m_rcZoomSrc.left + rcScreen.right * scaleX);
rcImage.bottom = (int)(m_rcZoomSrc.top + rcScreen.bottom * scaleY);
} else if (m_bAdaptiveSize) {
rcImage.left = (int)(rcScreen.left * m_wZoom);
rcImage.top = (int)(rcScreen.top * m_hZoom);
rcImage.right = (int)(rcScreen.right * m_wZoom);
rcImage.bottom = (int)(rcScreen.bottom * m_hZoom);
} else {
rcImage.left = rcScreen.left + m_ulHScrollPos;
rcImage.top = rcScreen.top + m_ulVScrollPos;
rcImage.right = rcScreen.right + m_ulHScrollPos;
rcImage.bottom = rcScreen.bottom + m_ulVScrollPos;
}
// 限制在原图范围内
rcImage.left = max(0L, min(rcImage.left, (LONG)srcW));
rcImage.top = max(0L, min(rcImage.top, (LONG)srcH));
rcImage.right = max(0L, min(rcImage.right, (LONG)srcW));
rcImage.bottom = max(0L, min(rcImage.bottom, (LONG)srcH));
return true;
}
// 把原图中 [rcImage] 区域裁出来，写成独立 BMP（24bpp 或 32bpp 由源图决定）
void CScreenSpyDlg::SaveRegionScreenshot(const CRect& rcImage)
{
if (!m_BitmapInfor_Full || !m_BitmapData_Full) return;
if (rcImage.Width() <= 0 || rcImage.Height() <= 0) return;
auto path = GetScreenShotPath(this, m_IPAddress, _TR("位图文件(*.bmp)|*.bmp|"), "bmp");
if (path.empty()) return;
// 源 DIB 是 BGR 24bpp 或 BGRA 32bpp，bottom-up（biHeight > 0）
const BITMAPINFOHEADER& srcHdr = m_BitmapInfor_Full->bmiHeader;
int bpp = srcHdr.biBitCount;
if (bpp != 24 && bpp != 32) return; // 仅支持当前实际使用的两种位深
int srcW = srcHdr.biWidth;
int srcH = srcHdr.biHeight;
int srcStride = ((srcW * bpp + 31) / 32) * 4;
int dstW = rcImage.Width();
int dstH = rcImage.Height();
int dstStride = ((dstW * bpp + 31) / 32) * 4;
int dstSize = dstStride * dstH;
std::vector<BYTE> dstPixels(dstSize, 0);
const BYTE* srcBase = (const BYTE*)m_BitmapData_Full;
// bottom-up：原图第 y 行（从顶起算）位于 srcBase + (srcH - 1 - y) * srcStride
int byteX = rcImage.left * (bpp / 8);
int copyBytes = dstW * (bpp / 8);
for (int y = 0; y < dstH; ++y) {
int srcRowFromTop = rcImage.top + y;
int srcRowOffset = (srcH - 1 - srcRowFromTop) * srcStride + byteX;
int dstRowOffset = (dstH - 1 - y) * dstStride;
memcpy(&dstPixels[dstRowOffset], &srcBase[srcRowOffset], copyBytes);
}
// 拼装 BITMAPINFO（裁剪后只需要 BITMAPINFOHEADER；24/32bpp 不需要调色板）
BITMAPINFO dstBmi = {};
dstBmi.bmiHeader = srcHdr;
dstBmi.bmiHeader.biWidth = dstW;
dstBmi.bmiHeader.biHeight = dstH;
dstBmi.bmiHeader.biSizeImage = dstSize;
dstBmi.bmiHeader.biCompression = BI_RGB;
if (WriteBitmap(&dstBmi, dstPixels.data(), path)) {
m_strSaveNotice = path;
m_nSaveNoticeTime = GetTickCount64();
}
}
BOOL CScreenSpyDlg::OnMouseWheel(UINT nFlags, short zDelta, CPoint pt)
{
// Convert screen coordinates to client coordinates
@@ -2926,6 +3051,11 @@ void CScreenSpyDlg::OnMouseMove(UINT nFlags, CPoint point)
Invalidate(FALSE); // FALSE表示不擦除背景，减少闪烁
return;
}
if (m_bSelectingShot) {
m_ptShotCurrent = point;
Invalidate(FALSE);
return;
}
if (m_bZoomDragging) {
// 拖拽平移：计算偏移量并移动放大区域
@@ -3060,9 +3190,14 @@ void CScreenSpyDlg::OnActivate(UINT nState, CWnd* pWndOther, BOOL bMinimized)
void CScreenSpyDlg::UpdateCtrlStatus(BOOL ctrl)
{
m_bIsCtrl = ctrl;
// 进入控制模式时重置放大状态
if (m_bIsCtrl && m_bZoomedIn) {
ResetZoom();
// 进入控制模式时重置放大状态 + 中止任何正在进行的右键截图框选
if (m_bIsCtrl) {
if (m_bZoomedIn) ResetZoom();
if (m_bSelectingShot) {
m_bSelectingShot = false;
if (GetCapture() == this) ReleaseCapture();
Invalidate(FALSE);
}
}
SetClassLongPtr(m_hWnd, GCLP_HCURSOR, m_bIsCtrl ? (LONG_PTR)m_hRemoteCursor : (LONG_PTR)LoadCursor(NULL, IDC_NO));
// 控制模式：禁用本地 IME；查看模式：启用本地 IME
@@ -3072,9 +3207,10 @@ void CScreenSpyDlg::UpdateCtrlStatus(BOOL ctrl)
void CScreenSpyDlg::OnCaptureChanged(CWnd* pWnd)
{
// 捕获丢失时重置框选/拖拽状态
if (m_bSelectingZoom || m_bZoomDragging) {
if (m_bSelectingZoom || m_bZoomDragging || m_bSelectingShot) {
m_bSelectingZoom = false;
m_bZoomDragging = false;
m_bSelectingShot = false;
Invalidate();
}
__super::OnCaptureChanged(pWnd);