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https://github.com/reactos/reactos.git
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e579220098
Follow-up to #5994. Reduce the lag and the cost of drawing on large image. - Introduce partial image history on SmoothDrawTool and ShapeTool. - We can draw with pen smoothly even when the image is huge (10000x10000). CORE-19237
128 lines
3.5 KiB
C++
128 lines
3.5 KiB
C++
/*
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* PROJECT: PAINT for ReactOS
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* LICENSE: LGPL-2.0-or-later (https://spdx.org/licenses/LGPL-2.0-or-later)
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* PURPOSE: Window procedure of the main window and all children apart from
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* hPalWin, hToolSettings and hSelection
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* COPYRIGHT: Copyright 2015 Benedikt Freisen <b.freisen@gmx.net>
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* Copyright 2023 Katayama Hirofumi MZ <katayama.hirofumi.mz@gmail.com>
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*/
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#include "precomp.h"
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CMiniatureWindow miniature;
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/* FUNCTIONS ********************************************************/
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CMiniatureWindow::CMiniatureWindow()
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: m_hbmCached(NULL)
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{
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}
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CMiniatureWindow::~CMiniatureWindow()
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{
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if (m_hbmCached)
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::DeleteObject(m_hbmCached);
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}
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HWND CMiniatureWindow::DoCreate(HWND hwndParent)
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{
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if (m_hWnd)
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return m_hWnd;
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RECT rc =
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{
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(LONG)registrySettings.ThumbXPos, (LONG)registrySettings.ThumbYPos,
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(LONG)(registrySettings.ThumbXPos + registrySettings.ThumbWidth),
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(LONG)(registrySettings.ThumbYPos + registrySettings.ThumbHeight)
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};
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WCHAR strTitle[100];
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::LoadStringW(g_hinstExe, IDS_MINIATURETITLE, strTitle, _countof(strTitle));
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DWORD style = WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU | WS_THICKFRAME;
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return Create(hwndParent, rc, strTitle, style, WS_EX_PALETTEWINDOW);
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}
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LRESULT CMiniatureWindow::OnMove(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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if (IsWindowVisible() && !IsIconic() && !IsZoomed())
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{
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CRect rc;
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GetWindowRect(&rc);
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registrySettings.ThumbXPos = rc.left;
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registrySettings.ThumbYPos = rc.top;
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}
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return 0;
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}
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LRESULT CMiniatureWindow::OnSize(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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if (IsWindowVisible() && !IsIconic() && !IsZoomed())
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{
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CRect rc;
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GetWindowRect(&rc);
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registrySettings.ThumbWidth = rc.Width();
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registrySettings.ThumbHeight = rc.Height();
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}
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return 0;
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}
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LRESULT CMiniatureWindow::OnClose(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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ShowWindow(SW_HIDE);
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registrySettings.ShowThumbnail = FALSE;
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return 0;
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}
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LRESULT CMiniatureWindow::OnEraseBkgnd(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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return TRUE; /* Avoid flickering */
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}
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LRESULT CMiniatureWindow::OnPaint(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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RECT rc;
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GetClientRect(&rc);
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// Start painting
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PAINTSTRUCT ps;
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HDC hDC = BeginPaint(&ps);
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if (!hDC)
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return 0;
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// Use a memory bitmap to reduce flickering
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HDC hdcMem = ::CreateCompatibleDC(hDC);
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m_hbmCached = CachedBufferDIB(m_hbmCached, rc.right, rc.bottom);
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HGDIOBJ hbmOld = ::SelectObject(hdcMem, m_hbmCached);
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// FIXME: Consider aspect ratio
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// Fill the background
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::FillRect(hdcMem, &rc, (HBRUSH)(COLOR_BTNFACE + 1));
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// Draw the image (hdcMem <-- imageModel)
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int cxImage = imageModel.GetWidth();
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int cyImage = imageModel.GetHeight();
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::StretchBlt(hdcMem, 0, 0, rc.right, rc.bottom,
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imageModel.GetDC(), 0, 0, cxImage, cyImage,
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SRCCOPY);
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// Move the image (hDC <-- hdcMem)
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::BitBlt(hDC, 0, 0, rc.right, rc.bottom, hdcMem, 0, 0, SRCCOPY);
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// Clean up
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::SelectObject(hdcMem, hbmOld);
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::DeleteDC(hdcMem);
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EndPaint(&ps);
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return 0;
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}
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LRESULT CMiniatureWindow::OnGetMinMaxInfo(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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// Avoid too small
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LPMINMAXINFO pInfo = (LPMINMAXINFO)lParam;
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pInfo->ptMinTrackSize = { 100, 75 };
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return 0;
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}
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