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[MSPAINT] Smartly restrict CTextEditWindow's size and position

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...by using WM_SIZING and WM_MOVING. CORE-18867
This commit is contained in:
Katayama Hirofumi MZ 2023-06-19 08:24:17 +09:00
parent 7aadc1e1fe
commit 17bdf55474
4 changed files with 97 additions and 28 deletions
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117
base/applications/mspaint/textedit.cpp
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@ -200,12 +200,6 @@ LRESULT CTextEditWindow::OnSetCursor(UINT nMsg, WPARAM wParam, LPARAM lParam, BO
LRESULT CTextEditWindow::OnMove(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
LRESULT ret = DefWindowProc(nMsg, wParam, lParam);
if (m_nAppIsMovingOrSizing == 0)
{
Reposition();
InvalidateEditRect();
}
return ret;
}
@ -218,12 +212,6 @@ LRESULT CTextEditWindow::OnSize(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& b
SendMessage(EM_SETRECTNP, 0, (LPARAM)&rc);
SendMessage(EM_SETMARGINS, EC_LEFTMARGIN | EC_RIGHTMARGIN, MAKELONG(0, 0));
if (m_nAppIsMovingOrSizing == 0)
{
Reposition();
InvalidateEditRect();
}
return ret;
}
@ -400,27 +388,104 @@ void CTextEditWindow::ValidateEditRect(LPCRECT prc OPTIONAL)
--m_nAppIsMovingOrSizing;
}
void CTextEditWindow::Reposition()
LRESULT CTextEditWindow::OnMoving(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
CRect rc;
GetWindowRect(&rc);
::MapWindowPoints(NULL, canvasWindow, (LPPOINT)&rc, 2);
canvasWindow.CanvasToImage(rc);
// Restrict the window position to the image area
LPRECT prcMoving = (LPRECT)lParam;
CRect rcMoving = *prcMoving;
CRect rcImage;
canvasWindow.GetImageRect(rcImage);
canvasWindow.ImageToCanvas(rcImage);
canvasWindow.MapWindowPoints(NULL, &rcImage);
// FIXME: Smartly restrict the position and size by using WM_WINDOWPOSCHANGING
if (rc.left < 0)
::OffsetRect(&rc, -rc.left, 0);
if (rc.top < 0)
::OffsetRect(&rc, 0, -rc.top);
CRect rcWnd;
GetWindowRect(&rcWnd);
INT cx = rcWnd.Width(), cy = rcWnd.Height();
canvasWindow.ImageToCanvas(rc);
if (rcMoving.left < rcImage.left)
{
rcMoving.left = rcImage.left;
rcMoving.right = rcImage.left + cx;
}
else if (rcMoving.right > rcImage.right)
{
rcMoving.right = rcImage.right;
rcMoving.left = rcImage.right - cx;
}
++m_nAppIsMovingOrSizing;
MoveWindow(rc.left, rc.top, rc.Width(), rc.Height(), TRUE);
--m_nAppIsMovingOrSizing;
if (rcMoving.top < rcImage.top)
{
rcMoving.top = rcImage.top;
rcMoving.bottom = rcImage.top + cy;
}
else if (rcMoving.bottom > rcImage.bottom)
{
rcMoving.bottom = rcImage.bottom;
rcMoving.top = rcImage.bottom - cy;
}
*prcMoving = rcMoving;
Invalidate(TRUE);
return TRUE;
}
LRESULT CTextEditWindow::OnSizing(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
// Restrict the window size to the image area
LPRECT prcSizing = (LPRECT)lParam;
CRect rcSizing = *prcSizing;
CRect rcImage;
canvasWindow.GetImageRect(rcImage);
canvasWindow.ImageToCanvas(rcImage);
canvasWindow.MapWindowPoints(NULL, &rcImage);
// Horizontally
switch (wParam)
{
case WMSZ_BOTTOMLEFT:
case WMSZ_LEFT:
case WMSZ_TOPLEFT:
if (rcSizing.left < rcImage.left)
rcSizing.left = rcImage.left;
break;
case WMSZ_BOTTOMRIGHT:
case WMSZ_RIGHT:
case WMSZ_TOPRIGHT:
if (rcSizing.right > rcImage.right)
rcSizing.right = rcImage.right;
break;
case WMSZ_TOP:
case WMSZ_BOTTOM:
default:
break;
}
// Vertically
switch (wParam)
{
case WMSZ_BOTTOM:
case WMSZ_BOTTOMLEFT:
case WMSZ_BOTTOMRIGHT:
if (rcSizing.bottom > rcImage.bottom)
rcSizing.bottom = rcImage.bottom;
break;
case WMSZ_TOP:
case WMSZ_TOPLEFT:
case WMSZ_TOPRIGHT:
if (rcSizing.top < rcImage.top)
rcSizing.top = rcImage.top;
break;
case WMSZ_LEFT:
case WMSZ_RIGHT:
default:
break;
}
*prcSizing = rcSizing;
Invalidate(TRUE);
return TRUE;
}
LRESULT CTextEditWindow::OnMouseWheel(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)