[hbelusca] 70347: [CLIPBRD] - Add support for scrolling with the mouse wheel, by Ricardo Hanke. - No need to check for CloseClipboard failure & display an error message if the clipboard was success...

Author: hbelusca
Date: Mon Dec 14 22:55:55 2015
New Revision: 70347

URL: http://svn.reactos.org/svn/reactos?rev=70347&view=rev
Log:
[CLIPBRD]
- Add support for scrolling with the mouse wheel, by Ricardo Hanke.
- No need to check for CloseClipboard failure & display an error message if the clipboard was successfully opened just before.
- Use ARRAYSIZE macro instead of hardcoding the length of available clipboard format list.
CORE-10679

Modified:
    trunk/reactos/base/applications/clipbrd/clipbrd.c
    trunk/reactos/base/applications/clipbrd/cliputils.c
    trunk/reactos/base/applications/clipbrd/precomp.h
    trunk/reactos/base/applications/clipbrd/scrollutils.c
    trunk/reactos/base/applications/clipbrd/scrollutils.h

Modified: trunk/reactos/base/applications/clipbrd/clipbrd.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/base/applications/clipbrd/c...
==============================================================================
--- trunk/reactos/base/applications/clipbrd/clipbrd.c	[iso-8859-1] (original)
+++ trunk/reactos/base/applications/clipbrd/clipbrd.c	[iso-8859-1] Mon Dec 14 22:55:55 2015
@@ -12,6 +12,20 @@

CLIPBOARD_GLOBALS Globals;
 SCROLLSTATE Scrollstate;
+
+static void UpdateLinesToScroll(void)
+{
+    UINT uLinesToScroll;
+
+    if (!SystemParametersInfo(SPI_GETWHEELSCROLLLINES, 0, &uLinesToScroll, 0))
+    {
+        Globals.uLinesToScroll = 3;
+    }
+    else
+    {
+        Globals.uLinesToScroll = uLinesToScroll;
+    }
+}

static void SaveClipboardToFile(void)
 {
@@ -122,7 +136,7 @@
     }
     else
     {
-        Globals.uDisplayFormat =  uFormat;
+        Globals.uDisplayFormat = uFormat;
     }

if (Globals.hDspBmp)
@@ -341,6 +355,12 @@
         case WM_KEYDOWN:
         {
             HandleKeyboardScrollEvents(hWnd, uMsg, wParam, lParam);
+            break;
+        }
+
+        case WM_MOUSEWHEEL:
+        {
+            HandleMouseScrollEvents(hWnd, uMsg, wParam, lParam, &Scrollstate);
             break;
         }

@@ -472,6 +492,15 @@
         case WM_SYSCOLORCHANGE:
         {
             SetDisplayFormat(Globals.uDisplayFormat);
+            break;
+        }
+
+        case WM_SETTINGCHANGE:
+        {
+            if (wParam == SPI_SETWHEELSCROLLLINES)
+            {
+                UpdateLinesToScroll();
+            }
             break;
         }

@@ -545,6 +574,8 @@
         ShowLastWin32Error(Globals.hMainWnd);
     }

+    UpdateLinesToScroll();
+
     while (GetMessageW(&msg, 0, 0, 0))
     {
         if (!TranslateAcceleratorW(Globals.hMainWnd, hAccel, &msg))

Modified: trunk/reactos/base/applications/clipbrd/cliputils.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/base/applications/clipbrd/c...
==============================================================================
--- trunk/reactos/base/applications/clipbrd/cliputils.c	[iso-8859-1] (original)
+++ trunk/reactos/base/applications/clipbrd/cliputils.c	[iso-8859-1] Mon Dec 14 22:55:55 2015
@@ -108,17 +108,21 @@
         ShowLastWin32Error(Globals.hMainWnd);
     }

-    if (!CloseClipboard())
-    {
-        ShowLastWin32Error(Globals.hMainWnd);
-    }
+    CloseClipboard();
 }

UINT GetAutomaticClipboardFormat(void)
 {
-    UINT uFormatList[] = {CF_UNICODETEXT, CF_ENHMETAFILE, CF_METAFILEPICT, CF_DIBV5, CF_DIB, CF_BITMAP};
+    static UINT uFormatList[] = {
+        CF_UNICODETEXT,
+        CF_ENHMETAFILE,
+        CF_METAFILEPICT,
+        CF_DIBV5,
+        CF_DIB,
+        CF_BITMAP
+    };

-    return GetPriorityClipboardFormat(uFormatList, 6);
+    return GetPriorityClipboardFormat(uFormatList, ARRAYSIZE(uFormatList));
 }

BOOL IsClipboardFormatSupported(UINT uFormat)

Modified: trunk/reactos/base/applications/clipbrd/precomp.h
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/base/applications/clipbrd/p...
==============================================================================
--- trunk/reactos/base/applications/clipbrd/precomp.h	[iso-8859-1] (original)
+++ trunk/reactos/base/applications/clipbrd/precomp.h	[iso-8859-1] Mon Dec 14 22:55:55 2015
@@ -2,6 +2,8 @@
 #define _CLIPBRD_PCH_

// #pragma once
+
+#include <limits.h>

#include <windef.h>
 #include <winbase.h>
@@ -29,6 +31,7 @@
     HMENU hMenu;
     UINT uDisplayFormat;
     UINT uCheckedItem;
+    UINT uLinesToScroll;
     HBITMAP hDspBmp;
 } CLIPBOARD_GLOBALS;

Modified: trunk/reactos/base/applications/clipbrd/scrollutils.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/base/applications/clipbrd/s...
==============================================================================
--- trunk/reactos/base/applications/clipbrd/scrollutils.c	[iso-8859-1] (original)
+++ trunk/reactos/base/applications/clipbrd/scrollutils.c	[iso-8859-1] Mon Dec 14 22:55:55 2015
@@ -70,6 +70,53 @@
     }
 }

+void HandleMouseScrollEvents(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam, LPSCROLLSTATE state)
+{
+    SCROLLINFO si; 
+    int Delta;
+    int NewPos;
+
+    si.cbSize = sizeof(si);
+    si.fMask = SIF_PAGE;
+    GetScrollInfo(hWnd, SB_VERT, &si);
+
+    if (Globals.uLinesToScroll == WHEEL_PAGESCROLL)
+    {
+        NewPos = si.nPage;
+    }
+    else
+    {
+        NewPos = Globals.uLinesToScroll * 5;
+    }
+
+    if (GET_WHEEL_DELTA_WPARAM(wParam) > 0)
+    {
+        NewPos = state->CurrentY - NewPos;
+    }
+    else
+    {
+        NewPos = state->CurrentY + NewPos;
+    }
+
+    NewPos = min(state->MaxY, max(0, NewPos));
+
+    if (NewPos == state->CurrentY)
+    {
+        return;
+    }
+
+    Delta = NewPos - state->CurrentY;
+
+    state->CurrentY = NewPos;
+
+    ScrollWindowEx(hWnd, 0, -Delta, NULL, NULL, NULL, NULL, SW_INVALIDATE);
+
+    si.cbSize = sizeof(si);
+    si.fMask = SIF_POS;
+    si.nPos = state->CurrentY;
+    SetScrollInfo(hWnd, SB_VERT, &si, TRUE);
+}
+
 void HandleHorizontalScrollEvents(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam, LPSCROLLSTATE state)
 {
     SCROLLINFO si;

Modified: trunk/reactos/base/applications/clipbrd/scrollutils.h
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/base/applications/clipbrd/s...
==============================================================================
--- trunk/reactos/base/applications/clipbrd/scrollutils.h	[iso-8859-1] (original)
+++ trunk/reactos/base/applications/clipbrd/scrollutils.h	[iso-8859-1] Mon Dec 14 22:55:55 2015
@@ -15,6 +15,7 @@
 } SCROLLSTATE, *LPSCROLLSTATE;

void HandleKeyboardScrollEvents(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
+void HandleMouseScrollEvents(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam, LPSCROLLSTATE state);
 void HandleHorizontalScrollEvents(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam, LPSCROLLSTATE state);
 void HandleVerticalScrollEvents(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam, LPSCROLLSTATE state);
 void UpdateWindowScrollState(HWND hWnd, HBITMAP hBmp, LPSCROLLSTATE lpState);