[hbelusca] 70331: [CLIPBRD] Start scrolling support, work in progress. By Ricardo Hanke CORE-10679

Author: hbelusca
Date: Sat Dec 12 21:15:53 2015
New Revision: 70331

URL: http://svn.reactos.org/svn/reactos?rev=70331&view=rev
Log:
[CLIPBRD]
Start scrolling support, work in progress. By Ricardo Hanke
CORE-10679

Added:
    trunk/reactos/base/applications/clipbrd/scrollutils.c   (with props)
Modified:
    trunk/reactos/base/applications/clipbrd/CMakeLists.txt
    trunk/reactos/base/applications/clipbrd/clipbrd.c
    trunk/reactos/base/applications/clipbrd/fileutils.h
    trunk/reactos/base/applications/clipbrd/precomp.h
    trunk/reactos/base/applications/clipbrd/winutils.h

Modified: trunk/reactos/base/applications/clipbrd/CMakeLists.txt
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/base/applications/clipbrd/…
==============================================================================
--- trunk/reactos/base/applications/clipbrd/CMakeLists.txt	[iso-8859-1] (original)
+++ trunk/reactos/base/applications/clipbrd/CMakeLists.txt	[iso-8859-1] Sat Dec 12
21:15:53 2015
@@ -4,6 +4,7 @@
     cliputils.c
     winutils.c
     fileutils.c
+    scrollutils.c
     precomp.h)
 
 add_executable(clipbrd ${SOURCE} clipbrd.rc)

Modified: trunk/reactos/base/applications/clipbrd/clipbrd.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/base/applications/clipbrd/…
==============================================================================
--- trunk/reactos/base/applications/clipbrd/clipbrd.c	[iso-8859-1] (original)
+++ trunk/reactos/base/applications/clipbrd/clipbrd.c	[iso-8859-1] Sat Dec 12 21:15:53
2015
@@ -11,6 +11,7 @@
 static const WCHAR szClassName[] = L"ClipBookWClass";
 
 CLIPBOARD_GLOBALS Globals;
+SCROLLSTATE Scrollstate;
 
 static void SaveClipboardToFile(void)
 {
@@ -124,8 +125,15 @@
         Globals.uDisplayFormat =  uFormat;
     }
 
+    if (Globals.hDspBmp)
+    {
+        DeleteObject(Globals.hDspBmp);
+    }
+
+    ZeroMemory(&Scrollstate, sizeof(Scrollstate));
+    UpdateWindowScrollState(Globals.hMainWnd, Globals.hDspBmp, &Scrollstate);
+
     InvalidateRect(Globals.hMainWnd, NULL, TRUE);
-    UpdateWindow(Globals.hMainWnd);
 }
 
 static void InitMenuPopup(HMENU hMenu, LPARAM index)
@@ -330,10 +338,40 @@
             break;
         }
 
+        case WM_KEYDOWN:
+        {
+            HandleKeyboardScrollEvents(hWnd, uMsg, wParam, lParam);
+            break;
+        }
+
+        case WM_HSCROLL:
+        {
+            HandleHorizontalScrollEvents(hWnd, uMsg, wParam, lParam, &Scrollstate);
+            break;
+        }
+
+        case WM_VSCROLL:
+        {
+            HandleVerticalScrollEvents(hWnd, uMsg, wParam, lParam, &Scrollstate);
+            break;
+        }
+
         case WM_SIZE:
         {
-            InvalidateRect(hWnd, NULL, TRUE);
-            UpdateWindow(hWnd);
+            UpdateWindowScrollState(hWnd, Globals.hDspBmp, &Scrollstate);
+
+            if ((Globals.uDisplayFormat == CF_METAFILEPICT) ||
+                (Globals.uDisplayFormat == CF_ENHMETAFILE) ||
+                (Globals.uDisplayFormat == CF_DSPENHMETAFILE) ||
+                (Globals.uDisplayFormat == CF_DSPMETAFILEPICT))
+            {
+                InvalidateRect(Globals.hMainWnd, NULL, FALSE);
+            }
+            else if (!IsClipboardFormatSupported(Globals.uDisplayFormat))
+            {
+                InvalidateRect(Globals.hMainWnd, NULL, TRUE);
+            }
+
             break;
         }
 
@@ -428,6 +466,12 @@
                     UpdateWindow(hWnd);
                 }
             }
+            break;
+        }
+
+        case WM_SYSCOLORCHANGE:
+        {
+            SetDisplayFormat(Globals.uDisplayFormat);
             break;
         }
 
@@ -510,5 +554,10 @@
         }
     }
 
+    if (Globals.hDspBmp)
+    {
+        DeleteObject(Globals.hDspBmp);
+    }
+
     return (int)msg.wParam;
 }

Modified: trunk/reactos/base/applications/clipbrd/fileutils.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/base/applications/clipbrd/…
==============================================================================
--- trunk/reactos/base/applications/clipbrd/fileutils.h	[iso-8859-1] (original)
+++ trunk/reactos/base/applications/clipbrd/fileutils.h	[iso-8859-1] Sat Dec 12 21:15:53
2015
@@ -1,7 +1,7 @@
 /*
  * COPYRIGHT:       See COPYING in the top level directory
  * PROJECT:         ReactOS Clipboard Viewer
- * FILE:            base/applications/clipbrd/fileutils.c
+ * FILE:            base/applications/clipbrd/fileutils.h
  * PURPOSE:         Clipboard file format helper functions.
  * PROGRAMMERS:     Ricardo Hanke
  */

Modified: trunk/reactos/base/applications/clipbrd/precomp.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/base/applications/clipbrd/…
==============================================================================
--- trunk/reactos/base/applications/clipbrd/precomp.h	[iso-8859-1] (original)
+++ trunk/reactos/base/applications/clipbrd/precomp.h	[iso-8859-1] Sat Dec 12 21:15:53
2015
@@ -15,6 +15,7 @@
 #include "cliputils.h"
 #include "fileutils.h"
 #include "winutils.h"
+#include "scrollutils.h"
 
 #define MAX_STRING_LEN 255
 #define DISPLAY_MENU_POS 2
@@ -28,6 +29,7 @@
     HMENU hMenu;
     UINT uDisplayFormat;
     UINT uCheckedItem;
+    HBITMAP hDspBmp;
 } CLIPBOARD_GLOBALS;
 
 extern CLIPBOARD_GLOBALS Globals;

Added: trunk/reactos/base/applications/clipbrd/scrollutils.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/base/applications/clipbrd/…
==============================================================================
--- trunk/reactos/base/applications/clipbrd/scrollutils.c	(added)
+++ trunk/reactos/base/applications/clipbrd/scrollutils.c	[iso-8859-1] Sat Dec 12 21:15:53
2015
@@ -0,0 +1,267 @@
+/*
+ * COPYRIGHT:       See COPYING in the top level directory
+ * PROJECT:         ReactOS Clipboard Viewer
+ * FILE:            base/applications/clipbrd/scrollutils.c
+ * PURPOSE:         Scrolling releated helper functions.
+ * PROGRAMMERS:     Ricardo Hanke
+ */
+
+#include "precomp.h"
+
+static int InternalSetScrollInfo(HWND hWnd, int nMin, int nMax, UINT nPage, int nPos, int
fnBar)
+{
+    SCROLLINFO si;
+
+    ZeroMemory(&si, sizeof(si));
+    si.cbSize = sizeof(si);
+    si.fMask  = SIF_RANGE | SIF_PAGE | SIF_POS | SIF_DISABLENOSCROLL;
+    si.nMin   = nMin;
+    si.nMax   = nMax;
+    si.nPage  = nPage;
+    si.nPos   = nPos;
+
+    return SetScrollInfo(hWnd, fnBar, &si, TRUE);
+}
+
+void HandleKeyboardScrollEvents(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
+{
+    switch (wParam)
+    {
+        case VK_UP:
+        {
+            SendMessage(hWnd, WM_VSCROLL, MAKELONG(SB_LINEUP, 0), 0);
+            break;
+        }
+
+        case VK_DOWN:
+        {
+            SendMessage(hWnd, WM_VSCROLL, MAKELONG(SB_LINEDOWN, 0), 0);
+            break;
+        }
+
+        case VK_LEFT:
+        {
+            SendMessage(hWnd, WM_HSCROLL, MAKELONG(SB_LINEUP, 0), 0);
+            break;
+        }
+
+        case VK_RIGHT:
+        {
+            SendMessage(hWnd, WM_HSCROLL, MAKELONG(SB_LINEDOWN, 0), 0);
+            break;
+        }
+
+        case VK_PRIOR:
+        {
+            SendMessage(hWnd, WM_VSCROLL, MAKELONG(SB_PAGEUP, 0), 0);
+            break;
+        }
+
+        case VK_NEXT:
+        {
+            SendMessage(hWnd, WM_VSCROLL, MAKELONG(SB_PAGEDOWN, 0), 0);
+            break;
+        }
+
+        default:
+        {
+            break;
+        }
+    }
+}
+
+void HandleHorizontalScrollEvents(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam,
LPSCROLLSTATE state)
+{
+    SCROLLINFO si; 
+    int Delta;
+    int NewPos;
+
+    ZeroMemory(&si, sizeof(si));
+    si.cbSize = sizeof(si);
+    si.fMask = SIF_PAGE | SIF_TRACKPOS;
+    GetScrollInfo(hWnd, SB_HORZ, &si);
+
+    switch (LOWORD(wParam))
+    {
+        case SB_THUMBPOSITION:
+        case SB_THUMBTRACK:
+        {
+            NewPos = si.nTrackPos;
+            break;
+        }
+
+        case SB_LINELEFT:
+        {
+            NewPos = state->CurrentX - 5;
+            break;
+        }
+
+        case SB_LINERIGHT:
+        {
+            NewPos = state->CurrentX + 5;
+            break;
+        }
+
+        case SB_PAGELEFT:
+        {
+            NewPos = state->CurrentX - si.nPage;
+            break;
+        }
+
+        case SB_PAGERIGHT:
+        {
+            NewPos = state->CurrentX + si.nPage;
+            break;
+        }
+
+        default:
+        {
+            NewPos = state->CurrentX;
+            break;
+        }
+    } 
+
+   NewPos = min(state->MaxX, max(0, NewPos));
+
+   if (NewPos == state->CurrentX)
+   {
+       return;
+   }
+
+   Delta = NewPos - state->CurrentX;
+
+   state->CurrentX = NewPos;
+
+   ScrollWindowEx(hWnd, -Delta, 0, NULL, NULL, NULL, NULL, SW_INVALIDATE);
+
+   si.cbSize = sizeof(si);
+   si.fMask = SIF_POS;
+   si.nPos = state->CurrentX;
+   SetScrollInfo(hWnd, SB_HORZ, &si, TRUE);
+}
+
+void HandleVerticalScrollEvents(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam,
LPSCROLLSTATE state)
+{
+    SCROLLINFO si; 
+    int Delta;
+    int NewPos;
+
+    ZeroMemory(&si, sizeof(si));
+    si.cbSize = sizeof(si);
+    si.fMask = SIF_PAGE | SIF_TRACKPOS;
+    GetScrollInfo(hWnd, SB_VERT, &si);
+
+    switch (LOWORD(wParam))
+    {
+        case SB_THUMBPOSITION:
+        case SB_THUMBTRACK:
+        {
+            NewPos = si.nTrackPos;
+            break;
+        }
+
+        case SB_LINEUP:
+        {
+            NewPos = state->CurrentY - 5;
+            break;
+        }
+
+        case SB_LINEDOWN:
+        {
+            NewPos = state->CurrentY + 5;
+            break;
+        }
+
+        case SB_PAGEUP:
+        {
+            NewPos = state->CurrentY - si.nPage;
+            break;
+        }
+
+        case SB_PAGEDOWN:
+        {
+            NewPos = state->CurrentY + si.nPage;
+            break;
+        }
+
+        default:
+        {
+            NewPos = state->CurrentY;
+            break;
+        }
+   }
+
+   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 UpdateWindowScrollState(HWND hWnd, HBITMAP hBitmap, LPSCROLLSTATE lpState)
+{
+    BITMAP bmp;
+    RECT rc;
+
+    if (!GetObject(hBitmap, sizeof(BITMAP), &bmp))
+    {
+        bmp.bmWidth = 0;
+        bmp.bmHeight = 0;
+    }
+
+    if (!GetClientRect(hWnd, &rc))
+    {
+        SetRectEmpty(&rc);
+    }
+
+    lpState->MaxX = max(bmp.bmWidth - rc.right, 0);
+    lpState->CurrentX = min(lpState->CurrentX, lpState->MaxX);
+    InternalSetScrollInfo(hWnd, 0, bmp.bmWidth, rc.right, lpState->CurrentX,
SB_HORZ);
+
+    lpState->MaxY = max(bmp.bmHeight - rc.bottom, 0);
+    lpState->CurrentY = min(lpState->CurrentY, lpState->MaxY);
+    InternalSetScrollInfo(hWnd, 0, bmp.bmHeight, rc.bottom, lpState->CurrentY,
SB_VERT);
+}
+
+BOOL ScrollBlt(PAINTSTRUCT ps, HBITMAP hBmp, SCROLLSTATE state)
+{
+    RECT rect;
+    BOOL ret;
+    HDC hdc;
+    int xpos;
+    int ypos;
+
+    rect.left = ps.rcPaint.left;
+    rect.top = ps.rcPaint.top;
+    rect.right = (ps.rcPaint.right - ps.rcPaint.left);
+    rect.bottom = (ps.rcPaint.bottom - ps.rcPaint.top);
+
+    xpos = ps.rcPaint.left + state.CurrentX;
+    ypos = ps.rcPaint.top + state.CurrentY;
+
+    ret = FALSE;
+
+    hdc = CreateCompatibleDC(ps.hdc);
+    if (hdc)
+    {
+        if (SelectObject(hdc, hBmp))
+        {
+            ret = BitBlt(ps.hdc, rect.left, rect.top, rect.right, rect.bottom, hdc, xpos,
ypos, SRCCOPY);
+        }
+        DeleteDC(hdc);
+    }
+
+    return ret;
+}

Propchange: trunk/reactos/base/applications/clipbrd/scrollutils.c
------------------------------------------------------------------------------
    svn:eol-style = native

Modified: trunk/reactos/base/applications/clipbrd/winutils.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/base/applications/clipbrd/…
==============================================================================
--- trunk/reactos/base/applications/clipbrd/winutils.h	[iso-8859-1] (original)
+++ trunk/reactos/base/applications/clipbrd/winutils.h	[iso-8859-1] Sat Dec 12 21:15:53
2015
@@ -1,7 +1,7 @@
 /*
  * COPYRIGHT:       See COPYING in the top level directory
  * PROJECT:         ReactOS Clipboard Viewer
- * FILE:            base/applications/clipbrd/winutils.c
+ * FILE:            base/applications/clipbrd/winutils.h
  * PURPOSE:         Miscellaneous helper functions.
  * PROGRAMMERS:     Ricardo Hanke
  */