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124 lines
4 KiB
C++
124 lines
4 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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/* FUNCTIONS ********************************************************/
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void
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UpdateScrollbox()
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{
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RECT clientRectScrollbox;
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RECT clientRectImageArea;
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SCROLLINFO si;
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scrollboxWindow.GetClientRect(&clientRectScrollbox);
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imageArea.GetClientRect(&clientRectImageArea);
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si.cbSize = sizeof(SCROLLINFO);
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si.fMask = SIF_PAGE | SIF_RANGE;
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si.nMax = clientRectImageArea.right + 6 - 1;
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si.nMin = 0;
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si.nPage = clientRectScrollbox.right;
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scrollboxWindow.SetScrollInfo(SB_HORZ, &si);
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scrollboxWindow.GetClientRect(&clientRectScrollbox);
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si.nMax = clientRectImageArea.bottom + 6 - 1;
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si.nPage = clientRectScrollbox.bottom;
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scrollboxWindow.SetScrollInfo(SB_VERT, &si);
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scrlClientWindow.MoveWindow(
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-scrollboxWindow.GetScrollPos(SB_HORZ), -scrollboxWindow.GetScrollPos(SB_VERT),
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max(clientRectImageArea.right + 6, clientRectScrollbox.right),
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max(clientRectImageArea.bottom + 6, clientRectScrollbox.bottom), TRUE);
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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 == 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), imageModel.GetWidth() * toolsModel.GetZoom() / 1000 + 6,
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imageModel.GetHeight() * toolsModel.GetZoom() / 1000 + 6, 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), imageModel.GetWidth() * toolsModel.GetZoom() / 1000 + 6,
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imageModel.GetHeight() * toolsModel.GetZoom() / 1000 + 6, 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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pointSP = 0; // resets the point-buffer of the polygon and bezier functions
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return 0;
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}
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