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display source rectangle

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svn path=/trunk/; revision=18372
This commit is contained in:
Martin Fuchs 2005-10-09 11:24:51 +00:00
parent 07cba14d02
commit 5be74add41
1 changed files with 48 additions and 16 deletions
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64
rosapps/devutils/zoomin/framewnd.c
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@ -36,7 +36,10 @@
static int s_factor = 2; // zoom factor
static POINT s_srcPos = {0, 0}; // zoom factor
static POINT s_srcPos = {0, 0}; // source rectangle position
static RECT s_lastSrc = {-1,-1,-1,-1}; // last cursor position
BOOL s_dragging = FALSE;
////////////////////////////////////////////////////////////////////////////////
@ -97,15 +100,15 @@ LRESULT CALLBACK FrameWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lPa
case WM_PAINT: {
PAINTSTRUCT ps;
HDC hdcMem;
RECT rect;
RECT clnt;
SIZE size;
BeginPaint(hWnd, &ps);
hdcMem = GetDC(GetDesktopWindow());
GetClientRect(hWnd, &rect);
size.cx = rect.right / s_factor;
size.cy = rect.bottom / s_factor;
GetClientRect(hWnd, &clnt);
size.cx = clnt.right / s_factor;
size.cy = clnt.bottom / s_factor;
StretchBlt(ps.hdc, 0, 0, size.cx*s_factor, size.cy*s_factor, hdcMem, s_srcPos.x, s_srcPos.y, size.cx, size.cy, SRCCOPY);
@ -114,39 +117,68 @@ LRESULT CALLBACK FrameWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lPa
break;}
case WM_TIMER:
if (GetCapture() == hWnd) {
RECT rect;
if (s_dragging && GetCapture()==hWnd) {
RECT clnt, rect;
int width = GetSystemMetrics(SM_CXSCREEN);
int height = GetSystemMetrics(SM_CYSCREEN);
GetClientRect(hWnd, &rect);
GetCursorPos(&s_srcPos);
s_srcPos.x -= rect.right / s_factor / 2;
s_srcPos.y -= rect.bottom / s_factor / 2;
GetClientRect(hWnd, &clnt);
s_srcPos.x -= clnt.right / s_factor / 2;
s_srcPos.y -= clnt.bottom / s_factor / 2;
if (s_srcPos.x < 0)
s_srcPos.x = 0;
else if (s_srcPos.x+rect.right/s_factor > width)
s_srcPos.x = width - rect.right/s_factor;
else if (s_srcPos.x+clnt.right/s_factor > width)
s_srcPos.x = width - clnt.right/s_factor;
if (s_srcPos.y < 0)
s_srcPos.y = 0;
else if (s_srcPos.y+rect.bottom/s_factor > height)
s_srcPos.y = height - rect.bottom/s_factor;
else if (s_srcPos.y+clnt.bottom/s_factor > height)
s_srcPos.y = height - clnt.bottom/s_factor;
if (memcmp(&rect, &s_lastSrc, sizeof(RECT))) {
HDC hdc = GetDC(0);
if (s_lastSrc.bottom != -1)
DrawFocusRect(hdc, &s_lastSrc);
rect.left = s_srcPos.x - 1;
rect.top = s_srcPos.y - 1;
rect.right = rect.left + clnt.right/s_factor + 2;
rect.bottom = rect.top + clnt.bottom/s_factor + 2;
DrawFocusRect(hdc, &rect);
ReleaseDC(0, hdc);
s_lastSrc = rect;
}
}
InvalidateRect(hWnd, NULL, FALSE);
UpdateWindow(hWnd);
break;
case WM_LBUTTONDOWN:
s_dragging = TRUE;
SetCapture(hWnd);
break;
case WM_LBUTTONUP:
ReleaseCapture();
case WM_CANCELMODE:
if (s_dragging) {
HDC hdc = GetDC(0);
DrawFocusRect(hdc, &s_lastSrc);
ReleaseDC(0, hdc);
s_lastSrc.bottom = -1;
s_dragging = FALSE;
ReleaseCapture();
}
break;
case WM_DESTROY: