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cca1a3f47f
Previously, the canvas disappeared when a selection was clicked until the mouse was moved. CORE-13288
290 lines
9.1 KiB
C++
290 lines
9.1 KiB
C++
/*
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* PROJECT: PAINT for ReactOS
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* LICENSE: LGPL
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* FILE: base/applications/mspaint/selection.cpp
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* PURPOSE: Window procedure of the selection window
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* PROGRAMMERS: Benedikt Freisen
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* Katayama Hirofumi MZ
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*/
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/* INCLUDES *********************************************************/
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#include "precomp.h"
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/* FUNCTIONS ********************************************************/
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const LPCTSTR CSelectionWindow::m_lpszCursorLUT[9] = { /* action to mouse cursor lookup table */
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IDC_SIZEALL,
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IDC_SIZENWSE, IDC_SIZENS, IDC_SIZENESW,
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IDC_SIZEWE, IDC_SIZEWE,
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IDC_SIZENESW, IDC_SIZENS, IDC_SIZENWSE
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};
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BOOL
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ColorKeyedMaskBlt(HDC hdcDest, int nXDest, int nYDest, int nWidth, int nHeight, HDC hdcSrc, int nXSrc, int nYSrc, HBITMAP hbmMask, int xMask, int yMask, DWORD dwRop, COLORREF keyColor)
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{
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HDC hTempDC;
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HDC hTempDC2;
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HBITMAP hTempBm;
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HBRUSH hTempBrush;
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HBITMAP hTempMask;
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hTempDC = CreateCompatibleDC(hdcSrc);
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hTempDC2 = CreateCompatibleDC(hdcSrc);
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hTempBm = CreateCompatibleBitmap(hTempDC, nWidth, nHeight);
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SelectObject(hTempDC, hTempBm);
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hTempBrush = CreateSolidBrush(keyColor);
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SelectObject(hTempDC, hTempBrush);
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BitBlt(hTempDC, 0, 0, nWidth, nHeight, hdcSrc, nXSrc, nYSrc, SRCCOPY);
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PatBlt(hTempDC, 0, 0, nWidth, nHeight, PATINVERT);
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hTempMask = CreateBitmap(nWidth, nHeight, 1, 1, NULL);
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SelectObject(hTempDC2, hTempMask);
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BitBlt(hTempDC2, 0, 0, nWidth, nHeight, hTempDC, 0, 0, SRCCOPY);
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SelectObject(hTempDC, hbmMask);
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BitBlt(hTempDC2, 0, 0, nWidth, nHeight, hTempDC, xMask, yMask, SRCAND);
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MaskBlt(hdcDest, nXDest, nYDest, nWidth, nHeight, hdcSrc, nXSrc, nYSrc, hTempMask, xMask, yMask, dwRop);
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DeleteDC(hTempDC);
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DeleteDC(hTempDC2);
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DeleteObject(hTempBm);
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DeleteObject(hTempBrush);
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DeleteObject(hTempMask);
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return TRUE;
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}
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void
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ForceRefreshSelectionContents()
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{
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if (selectionWindow.IsWindowVisible())
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{
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selectionWindow.SendMessage(WM_LBUTTONDOWN, 0, MAKELPARAM(0, 0));
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selectionWindow.SendMessage(WM_MOUSEMOVE, 0, MAKELPARAM(0, 0));
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selectionWindow.SendMessage(WM_LBUTTONUP, 0, MAKELPARAM(0, 0));
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}
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}
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int CSelectionWindow::IdentifyCorner(int iXPos, int iYPos, int iWidth, int iHeight)
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{
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if (iYPos < 3)
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{
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if (iXPos < 3)
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return ACTION_RESIZE_TOP_LEFT;
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if ((iXPos < iWidth / 2 + 2) && (iXPos >= iWidth / 2 - 1))
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return ACTION_RESIZE_TOP;
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if (iXPos >= iWidth - 3)
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return ACTION_RESIZE_TOP_RIGHT;
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}
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if ((iYPos < iHeight / 2 + 2) && (iYPos >= iHeight / 2 - 1))
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{
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if (iXPos < 3)
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return ACTION_RESIZE_LEFT;
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if (iXPos >= iWidth - 3)
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return ACTION_RESIZE_RIGHT;
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}
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if (iYPos >= iHeight - 3)
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{
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if (iXPos < 3)
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return ACTION_RESIZE_BOTTOM_LEFT;
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if ((iXPos < iWidth / 2 + 2) && (iXPos >= iWidth / 2 - 1))
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return ACTION_RESIZE_BOTTOM;
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if (iXPos >= iWidth - 3)
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return ACTION_RESIZE_BOTTOM_RIGHT;
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}
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return 0;
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}
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LRESULT CSelectionWindow::OnPaint(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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if (!m_bMoving)
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{
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HDC hDC = GetDC();
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DefWindowProc(WM_PAINT, wParam, lParam);
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SelectionFrame(hDC, 1, 1, selectionModel.GetDestRectWidth() * toolsModel.GetZoom() / 1000 + 5,
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selectionModel.GetDestRectHeight() * toolsModel.GetZoom() / 1000 + 5,
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m_dwSystemSelectionColor);
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ReleaseDC(hDC);
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}
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return 0;
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}
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LRESULT CSelectionWindow::OnEraseBkgnd(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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// do nothing => transparent background
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return 0;
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}
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LRESULT CSelectionWindow::OnCreate(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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m_bMoving = FALSE;
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m_iAction = ACTION_MOVE;
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/* update the system selection color */
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m_dwSystemSelectionColor = GetSysColor(COLOR_HIGHLIGHT);
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SendMessage(WM_PAINT, 0, MAKELPARAM(0, 0));
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return 0;
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}
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LRESULT CSelectionWindow::OnSysColorChange(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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/* update the system selection color */
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m_dwSystemSelectionColor = GetSysColor(COLOR_HIGHLIGHT);
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SendMessage(WM_PAINT, 0, MAKELPARAM(0, 0));
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return 0;
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}
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LRESULT CSelectionWindow::OnSetCursor(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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SetCursor(LoadCursor(NULL, IDC_SIZEALL));
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return 0;
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}
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LRESULT CSelectionWindow::OnLButtonDown(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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m_ptPos.x = GET_X_LPARAM(lParam);
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m_ptPos.y = GET_Y_LPARAM(lParam);
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m_ptDelta.x = 0;
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m_ptDelta.y = 0;
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SetCapture();
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if (m_iAction != ACTION_MOVE)
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SetCursor(LoadCursor(NULL, m_lpszCursorLUT[m_iAction]));
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m_bMoving = TRUE;
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scrlClientWindow.InvalidateRect(NULL, TRUE);
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scrlClientWindow.SendMessage(WM_PAINT, 0, 0);
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imageArea.InvalidateRect(NULL, FALSE);
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imageArea.SendMessage(WM_PAINT, 0, 0);
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return 0;
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}
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LRESULT CSelectionWindow::OnMouseMove(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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if (m_bMoving)
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{
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imageModel.ResetToPrevious();
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m_ptFrac.x += GET_X_LPARAM(lParam) - m_ptPos.x;
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m_ptFrac.y += GET_Y_LPARAM(lParam) - m_ptPos.y;
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m_ptDelta.x += m_ptFrac.x * 1000 / toolsModel.GetZoom();
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m_ptDelta.y += m_ptFrac.y * 1000 / toolsModel.GetZoom();
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if (toolsModel.GetZoom() < 1000)
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{
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m_ptFrac.x = 0;
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m_ptFrac.y = 0;
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}
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else
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{
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m_ptFrac.x -= (m_ptFrac.x * 1000 / toolsModel.GetZoom()) * toolsModel.GetZoom() / 1000;
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m_ptFrac.y -= (m_ptFrac.y * 1000 / toolsModel.GetZoom()) * toolsModel.GetZoom() / 1000;
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}
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selectionModel.ModifyDestRect(m_ptDelta, m_iAction);
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CString strSize;
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strSize.Format(_T("%d x %d"), selectionModel.GetDestRectWidth(), selectionModel.GetDestRectHeight());
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SendMessage(hStatusBar, SB_SETTEXT, 2, (LPARAM) (LPCTSTR) strSize);
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if (toolsModel.GetActiveTool() == TOOL_TEXT)
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{
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selectionModel.DrawTextToolText(imageModel.GetDC(), paletteModel.GetFgColor(), paletteModel.GetBgColor(), toolsModel.IsBackgroundTransparent());
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}
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else
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{
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if (m_iAction != ACTION_MOVE)
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selectionModel.DrawSelectionStretched(imageModel.GetDC());
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else
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selectionModel.DrawSelection(imageModel.GetDC(), paletteModel.GetBgColor(), toolsModel.IsBackgroundTransparent());
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}
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imageArea.InvalidateRect(NULL, FALSE);
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imageArea.SendMessage(WM_PAINT, 0, 0);
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m_ptPos.x = GET_X_LPARAM(lParam);
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m_ptPos.y = GET_Y_LPARAM(lParam);
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}
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else
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{
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int w = selectionModel.GetDestRectWidth() * toolsModel.GetZoom() / 1000 + 6;
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int h = selectionModel.GetDestRectHeight() * toolsModel.GetZoom() / 1000 + 6;
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m_ptPos.x = GET_X_LPARAM(lParam);
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m_ptPos.y = GET_Y_LPARAM(lParam);
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SendMessage(hStatusBar, SB_SETTEXT, 2, (LPARAM) NULL);
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m_iAction = IdentifyCorner(m_ptPos.x, m_ptPos.y, w, h);
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if (m_iAction != ACTION_MOVE)
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SetCursor(LoadCursor(NULL, m_lpszCursorLUT[m_iAction]));
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}
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return 0;
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}
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LRESULT CSelectionWindow::OnLButtonUp(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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if (m_bMoving)
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{
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m_bMoving = FALSE;
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ReleaseCapture();
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if (m_iAction != ACTION_MOVE)
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{
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if (toolsModel.GetActiveTool() == TOOL_TEXT)
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{
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// FIXME: What to do?
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}
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else
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{
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selectionModel.ScaleContentsToFit();
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}
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}
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placeSelWin();
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ShowWindow(SW_HIDE);
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ShowWindow(SW_SHOW);
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}
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return 0;
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}
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LRESULT CSelectionWindow::OnCaptureChanged(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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if (m_bMoving)
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{
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m_bMoving = FALSE;
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if (m_iAction == ACTION_MOVE)
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{
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// FIXME: dirty hack
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placeSelWin();
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imageModel.Undo();
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imageModel.Undo();
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}
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else
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{
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m_iAction = ACTION_MOVE;
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}
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ShowWindow(SW_HIDE);
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}
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return 0;
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}
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LRESULT CSelectionWindow::OnKeyDown(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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if (wParam == VK_ESCAPE)
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{
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if (GetCapture() == m_hWnd)
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{
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ReleaseCapture();
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}
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}
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return 0;
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}
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LRESULT CSelectionWindow::OnPaletteModelColorChanged(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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if (toolsModel.GetActiveTool() == TOOL_TEXT)
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ForceRefreshSelectionContents();
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return 0;
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}
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LRESULT CSelectionWindow::OnToolsModelSettingsChanged(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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if (toolsModel.GetActiveTool() == TOOL_FREESEL ||
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toolsModel.GetActiveTool() == TOOL_RECTSEL ||
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toolsModel.GetActiveTool() == TOOL_TEXT)
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ForceRefreshSelectionContents();
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return 0;
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}
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LRESULT CSelectionWindow::OnSelectionModelRefreshNeeded(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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ForceRefreshSelectionContents();
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return 0;
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}
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