[reactos] 01/01: [MSPAINT] "Selection Clone" and "Selection Brush" (#5734)

[Katayama Hirofumi MZ]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=cbc63d876c3295635a6bb…

commit cbc63d876c3295635a6bb1b30993e9bd79873941
Author:     Katayama Hirofumi MZ <katayama.hirofumi.mz(a)gmail.com>
AuthorDate: Thu Sep 28 07:34:25 2023 +0900
Commit:     GitHub <noreply(a)github.com>
CommitDate: Thu Sep 28 07:34:25 2023 +0900

    [MSPAINT] "Selection Clone" and "Selection Brush" (#5734)
    
    - Stamp the image of the selection when the user clicks on
      the selection while holding down the Ctrl key.
    - Draw the image of the selection continuously when the user
      starts dragging the selection while holding down the Shift key.
    CORE-19094
---
 base/applications/mspaint/canvas.cpp         | 15 +++++++++++++++
 base/applications/mspaint/history.cpp        | 13 +++++++++++++
 base/applications/mspaint/history.h          |  1 +
 base/applications/mspaint/mouse.cpp          |  6 ------
 base/applications/mspaint/selectionmodel.cpp | 11 +++++++++++
 base/applications/mspaint/selectionmodel.h   |  1 +
 base/applications/mspaint/winproc.cpp        | 10 ++++++++++
 7 files changed, 51 insertions(+), 6 deletions(-)

diff --git a/base/applications/mspaint/canvas.cpp b/base/applications/mspaint/canvas.cpp
index a403c8bd456..d62779f39a6 100644
--- a/base/applications/mspaint/canvas.cpp
+++ b/base/applications/mspaint/canvas.cpp
@@ -268,9 +268,18 @@ LRESULT CCanvasWindow::OnLRButtonDown(BOOL bLeftButton, UINT nMsg,
WPARAM wParam
     HITTEST hitSelection = SelectionHitTest(pt);
     if (hitSelection != HIT_NONE)
     {
+        selectionModel.m_nSelectionBrush = 0; // Selection Brush is OFF
         if (bLeftButton)
         {
             CanvasToImage(pt);
+            if (::GetKeyState(VK_CONTROL) < 0) // Ctrl+Click is Selection Clone
+            {
+                imageModel.SelectionClone();
+            }
+            else if (::GetKeyState(VK_SHIFT) < 0) // Shift+Dragging is Selection
Brush
+            {
+                selectionModel.m_nSelectionBrush = 1; // Selection Brush is ON
+            }
             StartSelectionDrag(hitSelection, pt);
         }
         else
@@ -790,6 +799,12 @@ VOID CCanvasWindow::StartSelectionDrag(HITTEST hit, POINT ptImage)
 
 VOID CCanvasWindow::SelectionDragging(POINT ptImage)
 {
+    if (selectionModel.m_nSelectionBrush)
+    {
+        imageModel.SelectionClone(selectionModel.m_nSelectionBrush == 1);
+        selectionModel.m_nSelectionBrush = 2; // Selection Brush is ON and drawn
+    }
+
     selectionModel.Dragging(m_hitSelection, ptImage);
     Invalidate(FALSE);
 }
diff --git a/base/applications/mspaint/history.cpp
b/base/applications/mspaint/history.cpp
index e44eca7dc4d..9e924b9e3db 100644
--- a/base/applications/mspaint/history.cpp
+++ b/base/applications/mspaint/history.cpp
@@ -299,3 +299,16 @@ void ImageModel::UnlockBitmap(HBITMAP hbmLocked)
     m_hBms[m_currInd] = hbmLocked;
     m_hbmOld = ::SelectObject(m_hDrawingDC, hbmLocked); // Re-select
 }
+
+void ImageModel::SelectionClone(BOOL bUndoable)
+{
+    if (!selectionModel.m_bShow || ::IsRectEmpty(&selectionModel.m_rc))
+        return;
+
+    if (bUndoable)
+        PushImageForUndo(CopyBitmap());
+
+    selectionModel.DrawSelection(m_hDrawingDC, paletteModel.GetBgColor(),
+                                 toolsModel.IsBackgroundTransparent());
+    NotifyImageChanged();
+}
diff --git a/base/applications/mspaint/history.h b/base/applications/mspaint/history.h
index fb369dff72c..24f1e09cd13 100644
--- a/base/applications/mspaint/history.h
+++ b/base/applications/mspaint/history.h
@@ -41,6 +41,7 @@ public:
     void NotifyImageChanged();
     BOOL IsBlackAndWhite();
     void PushBlackAndWhite();
+    void SelectionClone(BOOL bUndoable = TRUE);
 
 protected:
     HDC m_hDrawingDC; // The device context for this class
diff --git a/base/applications/mspaint/mouse.cpp b/base/applications/mspaint/mouse.cpp
index d8e3585c252..70247293361 100644
--- a/base/applications/mspaint/mouse.cpp
+++ b/base/applications/mspaint/mouse.cpp
@@ -112,10 +112,7 @@ struct FreeSelTool : ToolBase
     void OnDrawOverlayOnImage(HDC hdc) override
     {
         if (!selectionModel.IsLanded())
-        {
-            selectionModel.DrawBackgroundPoly(hdc, selectionModel.m_rgbBack);
             selectionModel.DrawSelection(hdc, paletteModel.GetBgColor(),
toolsModel.IsBackgroundTransparent());
-        }
 
         if (canvasWindow.m_drawing)
         {
@@ -208,10 +205,7 @@ struct RectSelTool : ToolBase
     void OnDrawOverlayOnImage(HDC hdc) override
     {
         if (!selectionModel.IsLanded())
-        {
-            selectionModel.DrawBackgroundRect(hdc, selectionModel.m_rgbBack);
             selectionModel.DrawSelection(hdc, paletteModel.GetBgColor(),
toolsModel.IsBackgroundTransparent());
-        }
 
         if (canvasWindow.m_drawing)
         {
diff --git a/base/applications/mspaint/selectionmodel.cpp
b/base/applications/mspaint/selectionmodel.cpp
index c768c360744..e7263fa4e1f 100644
--- a/base/applications/mspaint/selectionmodel.cpp
+++ b/base/applications/mspaint/selectionmodel.cpp
@@ -187,6 +187,17 @@ BOOL SelectionModel::TakeOff()
     // Save the selection area
     m_rcOld = m_rc;
 
+    if (toolsModel.GetActiveTool() == TOOL_RECTSEL)
+    {
+        imageModel.PushImageForUndo();
+        selectionModel.DrawBackgroundRect(imageModel.GetDC(), selectionModel.m_rgbBack);
+    }
+    else if (toolsModel.GetActiveTool() == TOOL_FREESEL)
+    {
+        imageModel.PushImageForUndo();
+        selectionModel.DrawBackgroundPoly(imageModel.GetDC(), selectionModel.m_rgbBack);
+    }
+
     imageModel.NotifyImageChanged();
     return TRUE;
 }
diff --git a/base/applications/mspaint/selectionmodel.h
b/base/applications/mspaint/selectionmodel.h
index 1d0c1b28614..308952a6e67 100644
--- a/base/applications/mspaint/selectionmodel.h
+++ b/base/applications/mspaint/selectionmodel.h
@@ -23,6 +23,7 @@ public:
     CRect m_rc;    // in image pixel coordinates
     POINT m_ptHit; // in image pixel coordinates
     CRect m_rcOld; // in image pixel coordinates
+    INT m_nSelectionBrush = 0;
 
     SelectionModel();
     ~SelectionModel();
diff --git a/base/applications/mspaint/winproc.cpp
b/base/applications/mspaint/winproc.cpp
index 99658fccd52..b0330b4292d 100644
--- a/base/applications/mspaint/winproc.cpp
+++ b/base/applications/mspaint/winproc.cpp
@@ -704,6 +704,16 @@ LRESULT CMainWindow::OnCommand(UINT nMsg, WPARAM wParam, LPARAM
lParam, BOOL& bH
                 if (toolsModel.IsSelection())
                 {
                     canvasWindow.cancelDrawing();
+                    if (toolsModel.GetActiveTool() == TOOL_FREESEL ||
+                        toolsModel.GetActiveTool() == TOOL_RECTSEL)
+                    {
+                        imageModel.Undo();
+                        if (selectionModel.m_nSelectionBrush == 2) // Selection Brush is
drawn
+                        {
+                            imageModel.Undo();
+                            selectionModel.m_nSelectionBrush = 0;
+                        }
+                    }
                     break;
                 }
             }