mirror of
https://github.com/reactos/reactos.git
synced 2024-07-03 11:14:33 +00:00
b8598e095d
Consistent behavior of the application. - Add ShiftPtStack and BuildMaskFromPtStack helper functions. - Move some codes of selectionModel to mouse.cpp. CORE-19226
720 lines
20 KiB
C++
720 lines
20 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: Providing the canvas window class
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* COPYRIGHT: Copyright 2015 Benedikt Freisen <b.freisen@gmx.net>
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*/
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#include "precomp.h"
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CCanvasWindow canvasWindow;
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/* FUNCTIONS ********************************************************/
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CCanvasWindow::CCanvasWindow()
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: m_drawing(FALSE)
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, m_hitCanvasSizeBox(HIT_NONE)
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, m_ptOrig { -1, -1 }
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{
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m_ahbmCached[0] = m_ahbmCached[1] = NULL;
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m_rcResizing.SetRectEmpty();
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}
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CCanvasWindow::~CCanvasWindow()
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{
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if (m_ahbmCached[0])
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::DeleteObject(m_ahbmCached[0]);
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if (m_ahbmCached[1])
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::DeleteObject(m_ahbmCached[1]);
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}
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RECT CCanvasWindow::GetBaseRect()
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{
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CRect rcBase;
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GetImageRect(rcBase);
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ImageToCanvas(rcBase);
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rcBase.InflateRect(GRIP_SIZE, GRIP_SIZE);
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return rcBase;
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}
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VOID CCanvasWindow::ImageToCanvas(POINT& pt)
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{
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Zoomed(pt);
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pt.x += GRIP_SIZE - GetScrollPos(SB_HORZ);
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pt.y += GRIP_SIZE - GetScrollPos(SB_VERT);
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}
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VOID CCanvasWindow::ImageToCanvas(RECT& rc)
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{
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Zoomed(rc);
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::OffsetRect(&rc, GRIP_SIZE - GetScrollPos(SB_HORZ), GRIP_SIZE - GetScrollPos(SB_VERT));
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}
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VOID CCanvasWindow::CanvasToImage(POINT& pt)
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{
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pt.x -= GRIP_SIZE - GetScrollPos(SB_HORZ);
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pt.y -= GRIP_SIZE - GetScrollPos(SB_VERT);
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UnZoomed(pt);
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}
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VOID CCanvasWindow::CanvasToImage(RECT& rc)
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{
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::OffsetRect(&rc, GetScrollPos(SB_HORZ) - GRIP_SIZE, GetScrollPos(SB_VERT) - GRIP_SIZE);
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UnZoomed(rc);
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}
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VOID CCanvasWindow::GetImageRect(RECT& rc)
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{
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rc = { 0, 0, imageModel.GetWidth(), imageModel.GetHeight() };
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}
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HITTEST CCanvasWindow::CanvasHitTest(POINT pt)
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{
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if (selectionModel.m_bShow || ::IsWindowVisible(textEditWindow))
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return HIT_INNER;
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RECT rcBase = GetBaseRect();
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return getSizeBoxHitTest(pt, &rcBase);
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}
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VOID CCanvasWindow::getNewZoomRect(CRect& rcView, INT newZoom, CPoint ptTarget)
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{
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CRect rcImage;
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GetImageRect(rcImage);
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ImageToCanvas(rcImage);
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// Calculate the zoom rectangle
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INT oldZoom = toolsModel.GetZoom();
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GetClientRect(rcView);
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LONG cxView = rcView.right * oldZoom / newZoom, cyView = rcView.bottom * oldZoom / newZoom;
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rcView.SetRect(ptTarget.x - cxView / 2, ptTarget.y - cyView / 2,
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ptTarget.x + cxView / 2, ptTarget.y + cyView / 2);
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// Shift the rectangle if necessary
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INT dx = 0, dy = 0;
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if (rcView.left < rcImage.left)
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dx = rcImage.left - rcView.left;
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else if (rcImage.right < rcView.right)
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dx = rcImage.right - rcView.right;
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if (rcView.top < rcImage.top)
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dy = rcImage.top - rcView.top;
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else if (rcImage.bottom < rcView.bottom)
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dy = rcImage.bottom - rcView.bottom;
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rcView.OffsetRect(dx, dy);
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rcView.IntersectRect(&rcView, &rcImage);
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}
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VOID CCanvasWindow::zoomTo(INT newZoom, LONG left, LONG top)
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{
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POINT pt = { left, top };
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CanvasToImage(pt);
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toolsModel.SetZoom(newZoom);
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ImageToCanvas(pt);
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pt.x += GetScrollPos(SB_HORZ);
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pt.y += GetScrollPos(SB_VERT);
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updateScrollRange();
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updateScrollPos(pt.x, pt.y);
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Invalidate(TRUE);
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}
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VOID CCanvasWindow::DoDraw(HDC hDC, RECT& rcClient, RECT& rcPaint)
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{
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// This is the target area we have to draw on
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CRect rcCanvasDraw;
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rcCanvasDraw.IntersectRect(&rcClient, &rcPaint);
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// We use a memory bitmap to reduce flickering
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HDC hdcMem0 = ::CreateCompatibleDC(hDC);
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m_ahbmCached[0] = CachedBufferDIB(m_ahbmCached[0], rcClient.right, rcClient.bottom);
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HGDIOBJ hbm0Old = ::SelectObject(hdcMem0, m_ahbmCached[0]);
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// Fill the background on hdcMem0
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::FillRect(hdcMem0, &rcCanvasDraw, (HBRUSH)(COLOR_APPWORKSPACE + 1));
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// Draw the sizeboxes if necessary
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RECT rcBase = GetBaseRect();
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if (!selectionModel.m_bShow && !::IsWindowVisible(textEditWindow))
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drawSizeBoxes(hdcMem0, &rcBase, FALSE, &rcCanvasDraw);
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// Calculate image size
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CRect rcImage;
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GetImageRect(rcImage);
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SIZE sizeImage = { imageModel.GetWidth(), imageModel.GetHeight() };
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// Calculate the target area on the image
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CRect rcImageDraw = rcCanvasDraw;
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CanvasToImage(rcImageDraw);
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rcImageDraw.IntersectRect(&rcImageDraw, &rcImage);
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// Consider rounding down by zooming
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rcImageDraw.right += 1;
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rcImageDraw.bottom += 1;
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// hdcMem1 <-- imageModel
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HDC hdcMem1 = ::CreateCompatibleDC(hDC);
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m_ahbmCached[1] = CachedBufferDIB(m_ahbmCached[1], sizeImage.cx, sizeImage.cy);
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HGDIOBJ hbm1Old = ::SelectObject(hdcMem1, m_ahbmCached[1]);
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::BitBlt(hdcMem1, rcImageDraw.left, rcImageDraw.top, rcImageDraw.Width(), rcImageDraw.Height(),
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imageModel.GetDC(), rcImageDraw.left, rcImageDraw.top, SRCCOPY);
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// Draw overlay #1 on hdcMem1
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toolsModel.OnDrawOverlayOnImage(hdcMem1);
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// Transfer the bits with stretch (hdcMem0 <-- hdcMem1)
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ImageToCanvas(rcImage);
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::StretchBlt(hdcMem0, rcImage.left, rcImage.top, rcImage.Width(), rcImage.Height(),
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hdcMem1, 0, 0, sizeImage.cx, sizeImage.cy, SRCCOPY);
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// Clean up hdcMem1
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::SelectObject(hdcMem1, hbm1Old);
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::DeleteDC(hdcMem1);
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// Draw the grid on hdcMem0
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if (g_showGrid && toolsModel.GetZoom() >= 4000)
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{
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HPEN oldPen = (HPEN) ::SelectObject(hdcMem0, ::CreatePen(PS_SOLID, 1, RGB(160, 160, 160)));
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for (INT counter = 0; counter < sizeImage.cy; counter++)
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{
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POINT pt0 = { 0, counter }, pt1 = { sizeImage.cx, counter };
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ImageToCanvas(pt0);
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ImageToCanvas(pt1);
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::MoveToEx(hdcMem0, pt0.x, pt0.y, NULL);
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::LineTo(hdcMem0, pt1.x, pt1.y);
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}
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for (INT counter = 0; counter < sizeImage.cx; counter++)
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{
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POINT pt0 = { counter, 0 }, pt1 = { counter, sizeImage.cy };
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ImageToCanvas(pt0);
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ImageToCanvas(pt1);
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::MoveToEx(hdcMem0, pt0.x, pt0.y, NULL);
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::LineTo(hdcMem0, pt1.x, pt1.y);
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}
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::DeleteObject(::SelectObject(hdcMem0, oldPen));
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}
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// Draw overlay #2 on hdcMem0
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toolsModel.OnDrawOverlayOnCanvas(hdcMem0);
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// Draw new frame on hdcMem0 if any
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if (m_hitCanvasSizeBox != HIT_NONE && !m_rcResizing.IsRectEmpty())
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DrawXorRect(hdcMem0, &m_rcResizing);
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// Transfer the bits (hDC <-- hdcMem0)
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::BitBlt(hDC, rcCanvasDraw.left, rcCanvasDraw.top, rcCanvasDraw.Width(), rcCanvasDraw.Height(),
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hdcMem0, rcCanvasDraw.left, rcCanvasDraw.top, SRCCOPY);
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// Clean up hdcMem0
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::SelectObject(hdcMem0, hbm0Old);
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::DeleteDC(hdcMem0);
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}
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VOID CCanvasWindow::updateScrollRange()
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{
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CRect rcClient;
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GetClientRect(&rcClient);
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CSize sizePage(rcClient.right, rcClient.bottom);
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CSize sizeZoomed = { Zoomed(imageModel.GetWidth()), Zoomed(imageModel.GetHeight()) };
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CSize sizeWhole = { sizeZoomed.cx + (GRIP_SIZE * 2), sizeZoomed.cy + (GRIP_SIZE * 2) };
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// show/hide the scrollbars
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ShowScrollBar(SB_HORZ, sizePage.cx < sizeWhole.cx);
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ShowScrollBar(SB_VERT, sizePage.cy < sizeWhole.cy);
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if (sizePage.cx < sizeWhole.cx || sizePage.cy < sizeWhole.cy)
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{
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GetClientRect(&rcClient); // Scrollbars might change, get client rectangle again
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sizePage = CSize(rcClient.right, rcClient.bottom);
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}
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SCROLLINFO si = { sizeof(si), SIF_PAGE | SIF_RANGE };
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si.nMin = 0;
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si.nMax = sizeWhole.cx;
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si.nPage = sizePage.cx;
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SetScrollInfo(SB_HORZ, &si);
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si.nMax = sizeWhole.cy;
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si.nPage = sizePage.cy;
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SetScrollInfo(SB_VERT, &si);
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}
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VOID CCanvasWindow::updateScrollPos(INT x, INT y)
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{
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SetScrollPos(SB_HORZ, x);
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SetScrollPos(SB_VERT, y);
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}
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LRESULT CCanvasWindow::OnSize(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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if (m_hWnd)
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updateScrollRange();
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return 0;
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}
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VOID CCanvasWindow::OnHVScroll(WPARAM wParam, INT fnBar)
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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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GetScrollInfo(fnBar, &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 = (SHORT)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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si.nPos = max(min(si.nPos, si.nMax), si.nMin);
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SetScrollInfo(fnBar, &si);
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Invalidate();
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}
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LRESULT CCanvasWindow::OnHScroll(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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OnHVScroll(wParam, SB_HORZ);
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return 0;
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}
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LRESULT CCanvasWindow::OnVScroll(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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OnHVScroll(wParam, SB_VERT);
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return 0;
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}
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LRESULT CCanvasWindow::OnButtonDown(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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POINT pt = { GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam) };
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m_nMouseDownMsg = nMsg;
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BOOL bLeftButton = (nMsg == WM_LBUTTONDOWN);
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if (nMsg == WM_MBUTTONDOWN)
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{
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m_ptOrig = pt;
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SetCapture();
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::SetCursor(::LoadCursorW(g_hinstExe, MAKEINTRESOURCEW(IDC_HANDDRAG)));
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return 0;
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}
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HITTEST hitSelection = selectionModel.hitTest(pt);
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if (hitSelection != HIT_NONE)
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{
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m_drawing = TRUE;
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CanvasToImage(pt);
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SetCapture();
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toolsModel.OnButtonDown(bLeftButton, pt.x, pt.y, FALSE);
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Invalidate();
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return 0;
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}
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HITTEST hit = CanvasHitTest(pt);
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if (hit == HIT_NONE || hit == HIT_BORDER)
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{
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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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toolsModel.OnEndDraw(TRUE);
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Invalidate();
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break;
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case TOOL_FREESEL:
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case TOOL_RECTSEL:
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toolsModel.OnEndDraw(FALSE);
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Invalidate();
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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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CanvasToImage(pt);
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if (hit == HIT_INNER)
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{
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m_drawing = TRUE;
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SetCapture();
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toolsModel.OnButtonDown(bLeftButton, pt.x, pt.y, FALSE);
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Invalidate();
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return 0;
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}
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if (bLeftButton)
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{
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m_hitCanvasSizeBox = hit;
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m_ptOrig = pt;
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SetCapture();
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}
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return 0;
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}
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LRESULT CCanvasWindow::OnButtonDblClk(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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POINT pt = { GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam) };
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CanvasToImage(pt);
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m_drawing = FALSE;
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::ReleaseCapture();
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m_nMouseDownMsg = 0;
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toolsModel.OnButtonDown(nMsg == WM_LBUTTONDBLCLK, pt.x, pt.y, TRUE);
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toolsModel.resetTool();
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Invalidate();
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return 0;
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}
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LRESULT CCanvasWindow::OnMouseMove(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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POINT pt = { GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam) };
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if (m_nMouseDownMsg == WM_MBUTTONDOWN)
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{
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INT x = GetScrollPos(SB_HORZ) - (pt.x - m_ptOrig.x);
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INT y = GetScrollPos(SB_VERT) - (pt.y - m_ptOrig.y);
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SendMessage(WM_HSCROLL, MAKEWPARAM(SB_THUMBPOSITION, x), 0);
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SendMessage(WM_VSCROLL, MAKEWPARAM(SB_THUMBPOSITION, y), 0);
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m_ptOrig = pt;
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return 0;
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}
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CanvasToImage(pt);
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if (toolsModel.GetActiveTool() == TOOL_ZOOM)
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Invalidate();
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if (!m_drawing || toolsModel.GetActiveTool() <= TOOL_AIRBRUSH)
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{
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TRACKMOUSEEVENT tme = { sizeof(tme) };
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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 (!m_drawing)
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{
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CRect rcImage;
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GetImageRect(rcImage);
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CStringW strCoord;
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if (rcImage.PtInRect(pt))
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strCoord.Format(L"%ld, %ld", pt.x, pt.y);
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::SendMessageW(g_hStatusBar, SB_SETTEXT, 1, (LPARAM)(LPCWSTR)strCoord);
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}
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}
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if (m_drawing || toolsModel.IsSelection())
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{
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toolsModel.DrawWithMouseTool(pt, wParam);
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return 0;
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}
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if (m_hitCanvasSizeBox == HIT_NONE || ::GetCapture() != m_hWnd)
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return 0;
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// Dragging now... Calculate the new size
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INT cxImage = imageModel.GetWidth(), cyImage = imageModel.GetHeight();
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INT cxDelta = pt.x - m_ptOrig.x;
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INT cyDelta = pt.y - m_ptOrig.y;
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switch (m_hitCanvasSizeBox)
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{
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case HIT_UPPER_LEFT:
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cxImage -= cxDelta;
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cyImage -= cyDelta;
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break;
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case HIT_UPPER_CENTER:
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cyImage -= cyDelta;
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break;
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case HIT_UPPER_RIGHT:
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cxImage += cxDelta;
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cyImage -= cyDelta;
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break;
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case HIT_MIDDLE_LEFT:
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cxImage -= cxDelta;
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break;
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case HIT_MIDDLE_RIGHT:
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cxImage += cxDelta;
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break;
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case HIT_LOWER_LEFT:
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cxImage -= cxDelta;
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cyImage += cyDelta;
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break;
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case HIT_LOWER_CENTER:
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cyImage += cyDelta;
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break;
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case HIT_LOWER_RIGHT:
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cxImage += cxDelta;
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cyImage += cyDelta;
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break;
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default:
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return 0;
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}
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// Limit bitmap size
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cxImage = max(1, cxImage);
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cyImage = max(1, cyImage);
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cxImage = min(MAXWORD, cxImage);
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cyImage = min(MAXWORD, cyImage);
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// Display new size
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CStringW strSize;
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strSize.Format(L"%d x %d", cxImage, cyImage);
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::SendMessageW(g_hStatusBar, SB_SETTEXT, 2, (LPARAM)(LPCWSTR)strSize);
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// Dragging now... Fix the position...
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CRect rcResizing = { 0, 0, cxImage, cyImage };
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switch (m_hitCanvasSizeBox)
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{
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case HIT_UPPER_LEFT:
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rcResizing.OffsetRect(cxDelta, cyDelta);
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break;
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case HIT_UPPER_CENTER:
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rcResizing.OffsetRect(0, cyDelta);
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break;
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case HIT_UPPER_RIGHT:
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rcResizing.OffsetRect(0, cyDelta);
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break;
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case HIT_MIDDLE_LEFT:
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rcResizing.OffsetRect(cxDelta, 0);
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break;
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case HIT_LOWER_LEFT:
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rcResizing.OffsetRect(cxDelta, 0);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
ImageToCanvas(rcResizing);
|
|
m_rcResizing = rcResizing;
|
|
Invalidate(TRUE);
|
|
|
|
return 0;
|
|
}
|
|
|
|
LRESULT CCanvasWindow::OnButtonUp(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
|
|
{
|
|
POINT pt = { GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam) };
|
|
CanvasToImage(pt);
|
|
|
|
::ReleaseCapture();
|
|
|
|
BOOL bLeftButton = (m_nMouseDownMsg == WM_LBUTTONDOWN);
|
|
m_nMouseDownMsg = 0;
|
|
|
|
if (m_drawing)
|
|
{
|
|
m_drawing = FALSE;
|
|
toolsModel.OnButtonUp(bLeftButton, pt.x, pt.y);
|
|
Invalidate(FALSE);
|
|
::SendMessageW(g_hStatusBar, SB_SETTEXT, 2, (LPARAM)L"");
|
|
return 0;
|
|
}
|
|
|
|
if (m_hitCanvasSizeBox == HIT_NONE || !bLeftButton)
|
|
return 0;
|
|
|
|
// Resize the image
|
|
INT cxImage = imageModel.GetWidth(), cyImage = imageModel.GetHeight();
|
|
INT cxDelta = pt.x - m_ptOrig.x;
|
|
INT cyDelta = pt.y - m_ptOrig.y;
|
|
switch (m_hitCanvasSizeBox)
|
|
{
|
|
case HIT_UPPER_LEFT:
|
|
imageModel.Crop(cxImage - cxDelta, cyImage - cyDelta, cxDelta, cyDelta);
|
|
break;
|
|
case HIT_UPPER_CENTER:
|
|
imageModel.Crop(cxImage, cyImage - cyDelta, 0, cyDelta);
|
|
break;
|
|
case HIT_UPPER_RIGHT:
|
|
imageModel.Crop(cxImage + cxDelta, cyImage - cyDelta, 0, cyDelta);
|
|
break;
|
|
case HIT_MIDDLE_LEFT:
|
|
imageModel.Crop(cxImage - cxDelta, cyImage, cxDelta, 0);
|
|
break;
|
|
case HIT_MIDDLE_RIGHT:
|
|
imageModel.Crop(cxImage + cxDelta, cyImage, 0, 0);
|
|
break;
|
|
case HIT_LOWER_LEFT:
|
|
imageModel.Crop(cxImage - cxDelta, cyImage + cyDelta, cxDelta, 0);
|
|
break;
|
|
case HIT_LOWER_CENTER:
|
|
imageModel.Crop(cxImage, cyImage + cyDelta, 0, 0);
|
|
break;
|
|
case HIT_LOWER_RIGHT:
|
|
imageModel.Crop(cxImage + cxDelta, cyImage + cyDelta, 0, 0);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
m_rcResizing.SetRectEmpty();
|
|
|
|
g_imageSaved = FALSE;
|
|
|
|
m_hitCanvasSizeBox = HIT_NONE;
|
|
toolsModel.resetTool(); // resets the point-buffer of the polygon and bezier functions
|
|
updateScrollRange();
|
|
Invalidate(TRUE);
|
|
return 0;
|
|
}
|
|
|
|
LRESULT CCanvasWindow::OnSetCursor(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
|
|
{
|
|
if (CWaitCursor::IsWaiting())
|
|
{
|
|
bHandled = FALSE;
|
|
return 0;
|
|
}
|
|
|
|
if (m_nMouseDownMsg == WM_MBUTTONDOWN)
|
|
{
|
|
::SetCursor(::LoadCursorW(g_hinstExe, MAKEINTRESOURCEW(IDC_HANDDRAG)));
|
|
return 0;
|
|
}
|
|
|
|
POINT pt;
|
|
::GetCursorPos(&pt);
|
|
ScreenToClient(&pt);
|
|
|
|
CRect rcClient;
|
|
GetClientRect(&rcClient);
|
|
|
|
if (!rcClient.PtInRect(pt))
|
|
{
|
|
bHandled = FALSE;
|
|
return 0;
|
|
}
|
|
|
|
HITTEST hitSelection = selectionModel.hitTest(pt);
|
|
if (hitSelection != HIT_NONE)
|
|
{
|
|
if (!setCursorOnSizeBox(hitSelection))
|
|
::SetCursor(::LoadCursorW(NULL, (LPCWSTR)IDC_SIZEALL));
|
|
return 0;
|
|
}
|
|
|
|
CRect rcImage;
|
|
GetImageRect(rcImage);
|
|
ImageToCanvas(rcImage);
|
|
|
|
if (rcImage.PtInRect(pt))
|
|
{
|
|
switch (toolsModel.GetActiveTool())
|
|
{
|
|
case TOOL_FILL:
|
|
::SetCursor(::LoadCursorW(g_hinstExe, MAKEINTRESOURCEW(IDC_FILL)));
|
|
break;
|
|
case TOOL_COLOR:
|
|
::SetCursor(::LoadCursorW(g_hinstExe, MAKEINTRESOURCEW(IDC_COLOR)));
|
|
break;
|
|
case TOOL_ZOOM:
|
|
::SetCursor(::LoadCursorW(g_hinstExe, MAKEINTRESOURCEW(IDC_ZOOM)));
|
|
break;
|
|
case TOOL_PEN:
|
|
::SetCursor(::LoadCursorW(g_hinstExe, MAKEINTRESOURCEW(IDC_PEN)));
|
|
break;
|
|
case TOOL_AIRBRUSH:
|
|
::SetCursor(::LoadCursorW(g_hinstExe, MAKEINTRESOURCEW(IDC_AIRBRUSH)));
|
|
break;
|
|
default:
|
|
::SetCursor(::LoadCursorW(NULL, (LPCWSTR)IDC_CROSS));
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
if (selectionModel.m_bShow || !setCursorOnSizeBox(CanvasHitTest(pt)))
|
|
bHandled = FALSE;
|
|
|
|
return 0;
|
|
}
|
|
|
|
LRESULT CCanvasWindow::OnKeyDown(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
|
|
{
|
|
if (wParam == VK_ESCAPE)
|
|
{
|
|
OnEndDraw(TRUE);
|
|
::ReleaseCapture();
|
|
m_nMouseDownMsg = 0;
|
|
m_hitCanvasSizeBox = HIT_NONE;
|
|
m_rcResizing.SetRectEmpty();
|
|
Invalidate(TRUE);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
LRESULT CCanvasWindow::OnCancelMode(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
|
|
{
|
|
// Cancel dragging
|
|
m_hitCanvasSizeBox = HIT_NONE;
|
|
m_rcResizing.SetRectEmpty();
|
|
Invalidate(TRUE);
|
|
return 0;
|
|
}
|
|
|
|
LRESULT CCanvasWindow::OnMouseWheel(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
|
|
{
|
|
return ::SendMessageW(GetParent(), nMsg, wParam, lParam);
|
|
}
|
|
|
|
LRESULT CCanvasWindow::OnCaptureChanged(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
|
|
{
|
|
::SendMessageW(g_hStatusBar, SB_SETTEXT, 2, (LPARAM)L"");
|
|
return 0;
|
|
}
|
|
|
|
LRESULT CCanvasWindow::OnEraseBkgnd(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
|
|
{
|
|
return TRUE; // do nothing => transparent background
|
|
}
|
|
|
|
LRESULT CCanvasWindow::OnPaint(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
|
|
{
|
|
RECT rcClient;
|
|
GetClientRect(&rcClient);
|
|
|
|
PAINTSTRUCT ps;
|
|
HDC hDC = BeginPaint(&ps);
|
|
DoDraw(hDC, rcClient, ps.rcPaint);
|
|
EndPaint(&ps);
|
|
return 0;
|
|
}
|
|
|
|
VOID CCanvasWindow::OnEndDraw(BOOL bCancel)
|
|
{
|
|
m_drawing = FALSE;
|
|
toolsModel.OnEndDraw(bCancel);
|
|
Invalidate(FALSE);
|
|
}
|
|
|
|
LRESULT CCanvasWindow::OnCtlColorEdit(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
|
|
{
|
|
SetTextColor((HDC)wParam, paletteModel.GetFgColor());
|
|
SetBkMode((HDC)wParam, TRANSPARENT);
|
|
return (LRESULT)GetStockObject(NULL_BRUSH);
|
|
}
|
|
|
|
LRESULT CCanvasWindow::OnPaletteModelColorChanged(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
|
|
{
|
|
imageModel.NotifyImageChanged();
|
|
return 0;
|
|
}
|