[reactos] 01/01: [MSPAINT] Scrolled canvas has defects in dragging a selection

[Katayama Hirofumi MZ]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=cb245ff7119466d05d000…

commit cb245ff7119466d05d000343ac6a3c0db996b3a1
Author:     Katayama Hirofumi MZ <katayama.hirofumi.mz(a)gmail.com>
AuthorDate: Tue Jun 13 14:57:59 2023 +0900
Commit:     Katayama Hirofumi MZ <katayama.hirofumi.mz(a)gmail.com>
CommitDate: Tue Jun 13 14:57:59 2023 +0900

    [MSPAINT] Scrolled canvas has defects in dragging a selection
    
    CORE-18990, CORE-18867
---
 base/applications/mspaint/canvas.cpp | 18 +++++++++---------
 base/applications/mspaint/canvas.h   |  8 ++++----
 2 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/base/applications/mspaint/canvas.cpp b/base/applications/mspaint/canvas.cpp
index e6977e3c2c0..a6aa9b461f9 100644
--- a/base/applications/mspaint/canvas.cpp
+++ b/base/applications/mspaint/canvas.cpp
@@ -258,7 +258,7 @@ LRESULT CCanvasWindow::OnLRButtonDown(BOOL bLeftButton, UINT nMsg,
WPARAM wParam
     {
         if (bLeftButton)
         {
-            UnZoomed(pt);
+            CanvasToImage(pt);
             StartSelectionDrag(hitSelection, pt);
         }
         return 0;
@@ -741,7 +741,7 @@ VOID CCanvasWindow::finishDrawing()
     Invalidate(FALSE);
 }
 
-CANVAS_HITTEST CCanvasWindow::SelectionHitTest(POINT ptZoomed)
+CANVAS_HITTEST CCanvasWindow::SelectionHitTest(POINT ptImage)
 {
     if (!selectionModel.m_bShow)
         return HIT_NONE;
@@ -751,28 +751,28 @@ CANVAS_HITTEST CCanvasWindow::SelectionHitTest(POINT ptZoomed)
     ::OffsetRect(&rcSelection, GRIP_SIZE - GetScrollPos(SB_HORZ), GRIP_SIZE -
GetScrollPos(SB_VERT));
     ::InflateRect(&rcSelection, GRIP_SIZE, GRIP_SIZE);
 
-    return getSizeBoxHitTest(ptZoomed, &rcSelection);
+    return getSizeBoxHitTest(ptImage, &rcSelection);
 }
 
-VOID CCanvasWindow::StartSelectionDrag(CANVAS_HITTEST hit, POINT ptUnZoomed)
+VOID CCanvasWindow::StartSelectionDrag(CANVAS_HITTEST hit, POINT ptImage)
 {
     m_hitSelection = hit;
-    selectionModel.m_ptHit = ptUnZoomed;
+    selectionModel.m_ptHit = ptImage;
     selectionModel.TakeOff();
 
     SetCapture();
     Invalidate(FALSE);
 }
 
-VOID CCanvasWindow::SelectionDragging(POINT ptUnZoomed)
+VOID CCanvasWindow::SelectionDragging(POINT ptImage)
 {
-    selectionModel.Dragging(m_hitSelection, ptUnZoomed);
+    selectionModel.Dragging(m_hitSelection, ptImage);
     Invalidate(FALSE);
 }
 
-VOID CCanvasWindow::EndSelectionDrag(POINT ptUnZoomed)
+VOID CCanvasWindow::EndSelectionDrag(POINT ptImage)
 {
-    selectionModel.Dragging(m_hitSelection, ptUnZoomed);
+    selectionModel.Dragging(m_hitSelection, ptImage);
     m_hitSelection = HIT_NONE;
     Invalidate(FALSE);
 }
diff --git a/base/applications/mspaint/canvas.h b/base/applications/mspaint/canvas.h
index 4a41652adc0..a201bdc2c7a 100644
--- a/base/applications/mspaint/canvas.h
+++ b/base/applications/mspaint/canvas.h
@@ -61,10 +61,10 @@ protected:
     VOID OnHVScroll(WPARAM wParam, INT fnBar);
     VOID drawZoomFrame(INT mouseX, INT mouseY);
 
-    CANVAS_HITTEST SelectionHitTest(POINT ptZoomed);
-    VOID StartSelectionDrag(CANVAS_HITTEST hit, POINT ptUnZoomed);
-    VOID SelectionDragging(POINT ptUnZoomed);
-    VOID EndSelectionDrag(POINT ptUnZoomed);
+    CANVAS_HITTEST SelectionHitTest(POINT ptImage);
+    VOID StartSelectionDrag(CANVAS_HITTEST hit, POINT ptImage);
+    VOID SelectionDragging(POINT ptImage);
+    VOID EndSelectionDrag(POINT ptImage);
 
     LRESULT OnSize(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
     LRESULT OnHScroll(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);