mirror of
https://github.com/reactos/reactos.git
synced 2024-06-21 13:31:38 +00:00
0839711566
- Fix Undo/Redo mechanism. - Finish drawing when the tool is to be chanaged and when the file is to be saved. - Add ToolBase::OnFinishDraw to virtualize finishing drawing. - Extend bClearRedo parameter to ImageModel::Undo. - Add ImageModel::DrawSelectionBackground and ImageModel::DeleteSelection methods. - Fix some WM_PAINT message handling. CORE-17969
421 lines
13 KiB
C++
421 lines
13 KiB
C++
/*
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* PROJECT: PAINT for ReactOS
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* LICENSE: LGPL
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* FILE: base/applications/mspaint/imgarea.cpp
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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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* 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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void
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updateCanvasAndScrollbars()
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{
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selectionWindow.ShowWindow(SW_HIDE);
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int zoomedWidth = Zoomed(imageModel.GetWidth());
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int zoomedHeight = Zoomed(imageModel.GetHeight());
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imageArea.MoveWindow(GRIP_SIZE, GRIP_SIZE, zoomedWidth, zoomedHeight, FALSE);
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scrollboxWindow.Invalidate(TRUE);
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imageArea.Invalidate(FALSE);
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scrollboxWindow.SetScrollPos(SB_HORZ, 0, TRUE);
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scrollboxWindow.SetScrollPos(SB_VERT, 0, TRUE);
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}
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void CImgAreaWindow::drawZoomFrame(int mouseX, int mouseY)
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{
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HDC hdc;
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HPEN oldPen;
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HBRUSH oldBrush;
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LOGBRUSH logbrush;
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int rop;
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RECT clientRectScrollbox;
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RECT clientRectImageArea;
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int x, y, w, h;
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scrollboxWindow.GetClientRect(&clientRectScrollbox);
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GetClientRect(&clientRectImageArea);
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w = clientRectImageArea.right * 2;
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h = clientRectImageArea.bottom * 2;
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if (!w || !h)
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{
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return;
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}
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w = clientRectImageArea.right * clientRectScrollbox.right / w;
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h = clientRectImageArea.bottom * clientRectScrollbox.bottom / h;
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x = max(0, min(clientRectImageArea.right - w, mouseX - w / 2));
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y = max(0, min(clientRectImageArea.bottom - h, mouseY - h / 2));
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hdc = GetDC();
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oldPen = (HPEN) SelectObject(hdc, CreatePen(PS_SOLID, 0, 0));
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logbrush.lbStyle = BS_HOLLOW;
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oldBrush = (HBRUSH) SelectObject(hdc, CreateBrushIndirect(&logbrush));
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rop = SetROP2(hdc, R2_NOT);
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Rectangle(hdc, x, y, x + w, y + h);
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SetROP2(hdc, rop);
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DeleteObject(SelectObject(hdc, oldBrush));
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DeleteObject(SelectObject(hdc, oldPen));
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ReleaseDC(hdc);
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}
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LRESULT CImgAreaWindow::OnSize(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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if (!IsWindow() || !sizeboxLeftTop.IsWindow())
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return 0;
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int imgXRes = imageModel.GetWidth();
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int imgYRes = imageModel.GetHeight();
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sizeboxLeftTop.MoveWindow(
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0,
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0, GRIP_SIZE, GRIP_SIZE, TRUE);
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sizeboxCenterTop.MoveWindow(
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GRIP_SIZE + (Zoomed(imgXRes) - GRIP_SIZE) / 2,
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0, GRIP_SIZE, GRIP_SIZE, TRUE);
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sizeboxRightTop.MoveWindow(
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GRIP_SIZE + Zoomed(imgXRes),
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0, GRIP_SIZE, GRIP_SIZE, TRUE);
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sizeboxLeftCenter.MoveWindow(
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0,
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GRIP_SIZE + (Zoomed(imgYRes) - GRIP_SIZE) / 2,
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GRIP_SIZE, GRIP_SIZE, TRUE);
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sizeboxRightCenter.MoveWindow(
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GRIP_SIZE + Zoomed(imgXRes),
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GRIP_SIZE + (Zoomed(imgYRes) - GRIP_SIZE) / 2,
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GRIP_SIZE, GRIP_SIZE, TRUE);
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sizeboxLeftBottom.MoveWindow(
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0,
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GRIP_SIZE + Zoomed(imgYRes), GRIP_SIZE, GRIP_SIZE, TRUE);
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sizeboxCenterBottom.MoveWindow(
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GRIP_SIZE + (Zoomed(imgXRes) - GRIP_SIZE) / 2,
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GRIP_SIZE + Zoomed(imgYRes), GRIP_SIZE, GRIP_SIZE, TRUE);
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sizeboxRightBottom.MoveWindow(
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GRIP_SIZE + Zoomed(imgXRes),
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GRIP_SIZE + Zoomed(imgYRes), GRIP_SIZE, GRIP_SIZE, TRUE);
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UpdateScrollbox();
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return 0;
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}
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LRESULT CImgAreaWindow::OnEraseBkGnd(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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HDC hdc = (HDC)wParam;
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if (toolsModel.GetActiveTool() == TOOL_TEXT && !toolsModel.IsBackgroundTransparent() &&
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::IsWindowVisible(textEditWindow))
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{
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// Do clipping
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HWND hChild = textEditWindow;
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RECT rcChild;
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::GetWindowRect(hChild, &rcChild);
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::MapWindowPoints(NULL, m_hWnd, (LPPOINT)&rcChild, 2);
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ExcludeClipRect(hdc, rcChild.left, rcChild.top, rcChild.right, rcChild.bottom);
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}
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return DefWindowProc(nMsg, wParam, lParam);
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}
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LRESULT CImgAreaWindow::OnPaint(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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PAINTSTRUCT ps;
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HDC hdc = BeginPaint(&ps);
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int imgXRes = imageModel.GetWidth();
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int imgYRes = imageModel.GetHeight();
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StretchBlt(hdc, 0, 0, Zoomed(imgXRes), Zoomed(imgYRes), imageModel.GetDC(), 0, 0, imgXRes,
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imgYRes, SRCCOPY);
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if (showGrid && (toolsModel.GetZoom() >= 4000))
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{
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HPEN oldPen = (HPEN) SelectObject(hdc, CreatePen(PS_SOLID, 1, 0x00a0a0a0));
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int counter;
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for(counter = 0; counter <= imgYRes; counter++)
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{
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MoveToEx(hdc, 0, Zoomed(counter), NULL);
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LineTo(hdc, Zoomed(imgXRes), Zoomed(counter));
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}
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for(counter = 0; counter <= imgXRes; counter++)
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{
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MoveToEx(hdc, Zoomed(counter), 0, NULL);
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LineTo(hdc, Zoomed(counter), Zoomed(imgYRes));
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}
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DeleteObject(SelectObject(hdc, oldPen));
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}
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EndPaint(&ps);
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if (selectionWindow.IsWindow())
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selectionWindow.Invalidate(FALSE);
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if (miniature.IsWindow())
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miniature.Invalidate(FALSE);
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if (textEditWindow.IsWindow())
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textEditWindow.Invalidate(FALSE);
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return 0;
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}
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LRESULT CImgAreaWindow::OnSetCursor(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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switch (toolsModel.GetActiveTool())
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{
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case TOOL_FILL:
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SetCursor(hCurFill);
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break;
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case TOOL_COLOR:
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SetCursor(hCurColor);
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break;
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case TOOL_ZOOM:
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SetCursor(hCurZoom);
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break;
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case TOOL_PEN:
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SetCursor(hCurPen);
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break;
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case TOOL_AIRBRUSH:
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SetCursor(hCurAirbrush);
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break;
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default:
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SetCursor(LoadCursor(NULL, IDC_CROSS));
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}
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return 0;
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}
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LRESULT CImgAreaWindow::OnLButtonDown(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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drawing = TRUE;
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SetCapture();
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INT x = GET_X_LPARAM(lParam), y = GET_Y_LPARAM(lParam);
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toolsModel.OnButtonDown(TRUE, UnZoomed(x), UnZoomed(y), FALSE);
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Invalidate(FALSE);
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return 0;
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}
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LRESULT CImgAreaWindow::OnLButtonDblClk(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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drawing = FALSE;
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ReleaseCapture();
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INT x = GET_X_LPARAM(lParam), y = GET_Y_LPARAM(lParam);
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toolsModel.OnButtonDown(TRUE, UnZoomed(x), UnZoomed(y), TRUE);
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toolsModel.resetTool();
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Invalidate(FALSE);
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return 0;
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}
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LRESULT CImgAreaWindow::OnRButtonDown(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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drawing = TRUE;
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SetCapture();
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INT x = GET_X_LPARAM(lParam), y = GET_Y_LPARAM(lParam);
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toolsModel.OnButtonDown(FALSE, UnZoomed(x), UnZoomed(y), FALSE);
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Invalidate(FALSE);
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return 0;
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}
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LRESULT CImgAreaWindow::OnRButtonDblClk(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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drawing = FALSE;
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ReleaseCapture();
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INT x = GET_X_LPARAM(lParam), y = GET_Y_LPARAM(lParam);
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toolsModel.OnButtonDown(FALSE, UnZoomed(x), UnZoomed(y), TRUE);
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toolsModel.resetTool();
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Invalidate(FALSE);
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return 0;
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}
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LRESULT CImgAreaWindow::OnLButtonUp(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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if (drawing)
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{
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drawing = FALSE;
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INT x = GET_X_LPARAM(lParam), y = GET_Y_LPARAM(lParam);
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toolsModel.OnButtonUp(TRUE, UnZoomed(x), UnZoomed(y));
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Invalidate(FALSE);
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SendMessage(hStatusBar, SB_SETTEXT, 2, (LPARAM) "");
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}
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ReleaseCapture();
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return 0;
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}
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void CImgAreaWindow::cancelDrawing()
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{
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drawing = FALSE;
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toolsModel.OnCancelDraw();
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Invalidate(FALSE);
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}
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LRESULT CImgAreaWindow::OnCaptureChanged(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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if (drawing)
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cancelDrawing();
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return 0;
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}
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LRESULT CImgAreaWindow::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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else
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{
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if (drawing || ToolBase::pointSP != 0 || selectionWindow.IsWindowVisible())
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cancelDrawing();
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}
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}
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return 0;
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}
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LRESULT CImgAreaWindow::OnRButtonUp(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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if (drawing)
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{
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drawing = FALSE;
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INT x = GET_X_LPARAM(lParam), y = GET_Y_LPARAM(lParam);
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toolsModel.OnButtonUp(FALSE, UnZoomed(x), UnZoomed(y));
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Invalidate(FALSE);
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SendMessage(hStatusBar, SB_SETTEXT, 2, (LPARAM) "");
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}
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ReleaseCapture();
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return 0;
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}
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LRESULT CImgAreaWindow::OnMouseMove(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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LONG xNow = UnZoomed(GET_X_LPARAM(lParam));
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LONG yNow = UnZoomed(GET_Y_LPARAM(lParam));
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if ((!drawing) || (toolsModel.GetActiveTool() <= TOOL_AIRBRUSH))
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{
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TRACKMOUSEEVENT tme;
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if (toolsModel.GetActiveTool() == TOOL_ZOOM)
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{
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Invalidate(FALSE);
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UpdateWindow();
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drawZoomFrame(GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam));
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}
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tme.cbSize = sizeof(TRACKMOUSEEVENT);
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tme.dwFlags = TME_LEAVE;
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tme.hwndTrack = m_hWnd;
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tme.dwHoverTime = 0;
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TrackMouseEvent(&tme);
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if (!drawing)
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{
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CString strCoord;
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strCoord.Format(_T("%ld, %ld"), xNow, yNow);
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SendMessage(hStatusBar, SB_SETTEXT, 1, (LPARAM) (LPCTSTR) strCoord);
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}
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}
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if (drawing)
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{
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/* values displayed in statusbar */
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LONG xRel = xNow - start.x;
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LONG yRel = yNow - start.y;
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/* freesel, rectsel and text tools always show numbers limited to fit into image area */
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if ((toolsModel.GetActiveTool() == TOOL_FREESEL) || (toolsModel.GetActiveTool() == TOOL_RECTSEL) || (toolsModel.GetActiveTool() == TOOL_TEXT))
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{
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if (xRel < 0)
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xRel = (xNow < 0) ? -start.x : xRel;
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else if (xNow > imageModel.GetWidth())
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xRel = imageModel.GetWidth() - start.x;
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if (yRel < 0)
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yRel = (yNow < 0) ? -start.y : yRel;
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else if (yNow > imageModel.GetHeight())
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yRel = imageModel.GetHeight() - start.y;
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}
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/* rectsel and shape tools always show non-negative numbers when drawing */
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if ((toolsModel.GetActiveTool() == TOOL_RECTSEL) || (toolsModel.GetActiveTool() == TOOL_SHAPE))
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{
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if (xRel < 0)
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xRel = -xRel;
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if (yRel < 0)
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yRel = -yRel;
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}
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/* while drawing, update cursor coordinates only for tools 3, 7, 8, 9, 14 */
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switch(toolsModel.GetActiveTool())
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{
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case TOOL_RUBBER:
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case TOOL_PEN:
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case TOOL_BRUSH:
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case TOOL_AIRBRUSH:
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case TOOL_SHAPE:
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{
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CString strCoord;
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strCoord.Format(_T("%ld, %ld"), xNow, yNow);
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SendMessage(hStatusBar, SB_SETTEXT, 1, (LPARAM) (LPCTSTR) strCoord);
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break;
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}
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default:
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break;
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}
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if (wParam & MK_LBUTTON)
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{
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toolsModel.OnMouseMove(TRUE, xNow, yNow);
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Invalidate(FALSE);
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if ((toolsModel.GetActiveTool() >= TOOL_TEXT) || (toolsModel.GetActiveTool() == TOOL_RECTSEL) || (toolsModel.GetActiveTool() == TOOL_FREESEL))
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{
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CString strSize;
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if ((toolsModel.GetActiveTool() >= TOOL_LINE) && (GetAsyncKeyState(VK_SHIFT) < 0))
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yRel = xRel;
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strSize.Format(_T("%ld x %ld"), xRel, yRel);
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SendMessage(hStatusBar, SB_SETTEXT, 2, (LPARAM) (LPCTSTR) strSize);
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}
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}
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if (wParam & MK_RBUTTON)
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{
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toolsModel.OnMouseMove(FALSE, xNow, yNow);
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Invalidate(FALSE);
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if (toolsModel.GetActiveTool() >= TOOL_TEXT)
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{
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CString strSize;
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if ((toolsModel.GetActiveTool() >= TOOL_LINE) && (GetAsyncKeyState(VK_SHIFT) < 0))
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yRel = xRel;
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strSize.Format(_T("%ld x %ld"), xRel, yRel);
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SendMessage(hStatusBar, SB_SETTEXT, 2, (LPARAM) (LPCTSTR) strSize);
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}
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}
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}
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return 0;
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}
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LRESULT CImgAreaWindow::OnMouseLeave(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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SendMessage(hStatusBar, SB_SETTEXT, 1, (LPARAM) _T(""));
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if (toolsModel.GetActiveTool() == TOOL_ZOOM)
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Invalidate(FALSE);
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return 0;
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}
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LRESULT CImgAreaWindow::OnImageModelDimensionsChanged(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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updateCanvasAndScrollbars();
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return 0;
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}
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LRESULT CImgAreaWindow::OnImageModelImageChanged(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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Invalidate(FALSE);
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return 0;
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}
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LRESULT CImgAreaWindow::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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LRESULT CImgAreaWindow::OnCtlColorEdit(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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HDC hdc = (HDC)wParam;
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SetBkMode(hdc, TRANSPARENT);
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return (LRESULT)GetStockObject(NULL_BRUSH);
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}
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void CImgAreaWindow::finishDrawing()
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{
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toolsModel.OnFinishDraw();
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drawing = FALSE;
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Invalidate(FALSE);
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}
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