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![Katayama Hirofumi MZ](/assets/img/avatar_default.png)
- Implement ATLTRACE and AtlTrace in atlbase.h. - Fix assertion failures in mspaint. CORE-17969, CORE-18012
207 lines
6.2 KiB
C++
207 lines
6.2 KiB
C++
/*
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* PROJECT: PAINT for ReactOS
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* LICENSE: LGPL
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* FILE: base/applications/mspaint/scrollbox.cpp
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* PURPOSE: Functionality surrounding the scroll box window class
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* PROGRAMMERS: Benedikt Freisen
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*/
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/* INCLUDES *********************************************************/
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#include "precomp.h"
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#include <atltypes.h>
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/*
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* Scrollbar functional modes:
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* 0 view < canvas
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* 1 view < canvas + scroll width
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* 2 view >= canvas + scroll width
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*
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* Matrix of scrollbar presence (VERTICAL,HORIZONTAL) given by
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* vertical & horizontal scrollbar modes (view:canvas ratio):
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*
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* horizontal mode
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* | 0 | 1 | 2
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* vertical ---+-------------+-------------+------------
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* mode 0 | TRUE,TRUE | TRUE,TRUE | TRUE,FALSE
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* ---+-------------+-------------+------------
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* 1 | TRUE,TRUE | FALSE,FALSE | FALSE,FALSE
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* ---+-------------+-------------+------------
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* 2 | FALSE,TRUE | FALSE,FALSE | FALSE,FALSE
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*/
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struct ScrollbarPresence
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{
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BOOL bVert;
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BOOL bHoriz;
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};
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CONST ScrollbarPresence sp_mx[3][3] =
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{
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{ { TRUE,TRUE }, { TRUE,TRUE }, { TRUE,FALSE } },
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{ { TRUE,TRUE }, { FALSE,FALSE }, { FALSE,FALSE } },
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{ { FALSE,TRUE }, { FALSE,FALSE }, { FALSE,FALSE } }
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};
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CONST INT HSCROLL_WIDTH = ::GetSystemMetrics(SM_CYHSCROLL);
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CONST INT VSCROLL_WIDTH = ::GetSystemMetrics(SM_CXVSCROLL);
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/* FUNCTIONS ********************************************************/
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void
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UpdateScrollbox()
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{
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CRect tempRect;
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CSize sizeImageArea;
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CSize sizeScrollBox;
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INT vmode, hmode;
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SCROLLINFO si;
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scrollboxWindow.GetWindowRect(&tempRect);
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sizeScrollBox = CSize(tempRect.Width(), tempRect.Height());
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if (imageArea.IsWindow())
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imageArea.GetClientRect(&tempRect);
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sizeImageArea = CSize(tempRect.Width(), tempRect.Height());
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sizeImageArea += CSize(GRIP_SIZE * 2, GRIP_SIZE * 2);
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/* show/hide the scrollbars */
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vmode = (sizeScrollBox.cy < sizeImageArea.cy ? 0 :
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(sizeScrollBox.cy < sizeImageArea.cy + HSCROLL_WIDTH ? 1 : 2));
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hmode = (sizeScrollBox.cx < sizeImageArea.cx ? 0 :
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(sizeScrollBox.cx < sizeImageArea.cx + VSCROLL_WIDTH ? 1 : 2));
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scrollboxWindow.ShowScrollBar(SB_VERT, sp_mx[vmode][hmode].bVert);
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scrollboxWindow.ShowScrollBar(SB_HORZ, sp_mx[vmode][hmode].bHoriz);
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si.cbSize = sizeof(SCROLLINFO);
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si.fMask = SIF_PAGE | SIF_RANGE;
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si.nMin = 0;
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si.nMax = sizeImageArea.cx +
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(sp_mx[vmode][hmode].bVert == TRUE ? HSCROLL_WIDTH : 0);
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si.nPage = sizeScrollBox.cx;
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scrollboxWindow.SetScrollInfo(SB_HORZ, &si);
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si.nMax = sizeImageArea.cy +
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(sp_mx[vmode][hmode].bHoriz == TRUE ? VSCROLL_WIDTH : 0);
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si.nPage = sizeScrollBox.cy;
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scrollboxWindow.SetScrollInfo(SB_VERT, &si);
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if (scrlClientWindow.IsWindow())
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{
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scrlClientWindow.MoveWindow(
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-scrollboxWindow.GetScrollPos(SB_HORZ), -scrollboxWindow.GetScrollPos(SB_VERT),
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sizeImageArea.cx, sizeImageArea.cy, TRUE);
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}
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}
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LRESULT CScrollboxWindow::OnSize(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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if (m_hWnd && m_hWnd == scrollboxWindow.m_hWnd)
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{
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UpdateScrollbox();
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}
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return 0;
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}
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LRESULT CScrollboxWindow::OnHScroll(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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if (m_hWnd == scrollboxWindow.m_hWnd)
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{
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SCROLLINFO si;
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si.cbSize = sizeof(SCROLLINFO);
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si.fMask = SIF_ALL;
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scrollboxWindow.GetScrollInfo(SB_HORZ, &si);
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switch (LOWORD(wParam))
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{
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case SB_THUMBTRACK:
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case SB_THUMBPOSITION:
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si.nPos = HIWORD(wParam);
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break;
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case SB_LINELEFT:
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si.nPos -= 5;
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break;
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case SB_LINERIGHT:
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si.nPos += 5;
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break;
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case SB_PAGELEFT:
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si.nPos -= si.nPage;
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break;
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case SB_PAGERIGHT:
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si.nPos += si.nPage;
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break;
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}
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scrollboxWindow.SetScrollInfo(SB_HORZ, &si);
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scrlClientWindow.MoveWindow(-scrollboxWindow.GetScrollPos(SB_HORZ),
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-scrollboxWindow.GetScrollPos(SB_VERT),
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Zoomed(imageModel.GetWidth()) + 2 * GRIP_SIZE,
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Zoomed(imageModel.GetHeight()) + 2 * GRIP_SIZE, TRUE);
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}
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return 0;
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}
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LRESULT CScrollboxWindow::OnVScroll(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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if (m_hWnd == scrollboxWindow.m_hWnd)
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{
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SCROLLINFO si;
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si.cbSize = sizeof(SCROLLINFO);
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si.fMask = SIF_ALL;
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scrollboxWindow.GetScrollInfo(SB_VERT, &si);
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switch (LOWORD(wParam))
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{
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case SB_THUMBTRACK:
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case SB_THUMBPOSITION:
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si.nPos = HIWORD(wParam);
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break;
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case SB_LINEUP:
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si.nPos -= 5;
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break;
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case SB_LINEDOWN:
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si.nPos += 5;
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break;
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case SB_PAGEUP:
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si.nPos -= si.nPage;
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break;
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case SB_PAGEDOWN:
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si.nPos += si.nPage;
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break;
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}
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scrollboxWindow.SetScrollInfo(SB_VERT, &si);
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scrlClientWindow.MoveWindow(-scrollboxWindow.GetScrollPos(SB_HORZ),
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-scrollboxWindow.GetScrollPos(SB_VERT),
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Zoomed(imageModel.GetWidth()) + 2 * GRIP_SIZE,
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Zoomed(imageModel.GetHeight()) + 2 * GRIP_SIZE, TRUE);
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}
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return 0;
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}
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LRESULT CScrollboxWindow::OnLButtonDown(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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selectionWindow.ShowWindow(SW_HIDE);
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switch (toolsModel.GetActiveTool())
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{
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case TOOL_BEZIER:
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case TOOL_SHAPE:
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if (ToolBase::pointSP != 0)
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{
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toolsModel.OnCancelDraw();
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imageArea.Invalidate();
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}
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break;
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default:
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break;
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}
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toolsModel.resetTool(); // resets the point-buffer of the polygon and bezier functions
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return 0;
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}
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LRESULT CScrollboxWindow::OnMouseWheel(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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return ::SendMessage(GetParent(), nMsg, wParam, lParam);
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}
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