Intravision/reactos
1
0
Fork 0
mirror of https://github.com/reactos/reactos.git synced 2025-08-05 22:23:01 +00:00
Code Issues Projects Releases Packages Wiki Activity

[CLIPBRD] Improvements for the Clipboard Viewer.

Browse source 
- Improve the scrolling support for bitmaps, DIBs and text formats.
  This completes the work started in CORE-10679 by Ricardo Hanke.
  Includes scrolling with the keyboard and the mouse wheel.
- Add support for the CF_DSP* clipboard formats, as well as CF_TEXT
  and CF_OEMTEXT.
- Add support for owner-display clipboard format CF_OWNERDISPLAY.
- Realize any palette found in the clipboard (CF_PALETTE) before
  displaying the clipboard data format we want.
- Remove dead code.
- Update the file headers.
This commit is contained in:
Hermès Bélusca-Maïto 2018-05-13 22:15:41 +02:00
parent 5a00192870
commit ebe3d5273e
No known key found for this signature in database
GPG key ID: 3B2539C65E7B93D0
12 changed files with 1000 additions and 546 deletions
Download patch file Download diff file Expand all files Collapse all files

224
base/applications/clipbrd/winutils.c
View file

@ -1,9 +1,9 @@
/*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS Clipboard Viewer
* FILE: base/applications/clipbrd/winutils.c
* PURPOSE: Miscellaneous helper functions.
* PROGRAMMERS: Ricardo Hanke
* PROJECT: ReactOS Clipboard Viewer
* LICENSE: GPL-2.0+ (https://spdx.org/licenses/GPL-2.0+)
* PURPOSE: Display helper functions.
* COPYRIGHT: Copyright 2015-2018 Ricardo Hanke
* Copyright 2015-2018 Hermes Belusca-Maito
*/
#include "precomp.h"
@ -46,22 +46,6 @@ void BringWindowToFront(HWND hWnd)
}
}
int DrawTextFromResource(HINSTANCE hInstance, UINT uID, HDC hDC, LPRECT lpRect, UINT uFormat)
{
LPWSTR lpBuffer;
int nCount;
nCount = LoadStringW(hInstance, uID, (LPWSTR)&lpBuffer, 0);
if (nCount)
{
return DrawTextW(hDC, lpBuffer, nCount, lpRect, uFormat);
}
else
{
return 0;
}
}
int MessageBoxRes(HWND hWnd, HINSTANCE hInstance, UINT uText, UINT uCaption, UINT uType)
{
MSGBOXPARAMSW mb;
@ -78,45 +62,135 @@ int MessageBoxRes(HWND hWnd, HINSTANCE hInstance, UINT uText, UINT uCaption, UIN
return MessageBoxIndirectW(&mb);
}
void DrawTextFromClipboard(HDC hDC, LPRECT lpRect, UINT uFormat)
void DrawTextFromResource(HINSTANCE hInstance, UINT uID, HDC hDC, LPRECT lpRect, UINT uFormat)
{
HGLOBAL hGlobal;
LPWSTR lpchText;
LPWSTR lpBuffer;
int nCount;
hGlobal = GetClipboardData(CF_UNICODETEXT);
nCount = LoadStringW(hInstance, uID, (LPWSTR)&lpBuffer, 0);
if (nCount)
DrawTextW(hDC, lpBuffer, nCount, lpRect, uFormat);
}
void DrawTextFromClipboard(UINT uFormat, PAINTSTRUCT ps, SCROLLSTATE state)
{
POINT ptOrg;
HGLOBAL hGlobal;
PVOID lpText, ptr;
SIZE_T lineSize;
INT FirstLine, LastLine;
hGlobal = GetClipboardData(uFormat);
if (!hGlobal)
return;
lpchText = GlobalLock(hGlobal);
if (!lpchText)
lpText = GlobalLock(hGlobal);
if (!lpText)
return;
DrawTextW(hDC, lpchText, -1, lpRect, uFormat);
/* Find the first and last line indices to display (Note that CurrentX/Y are in pixels!) */
FirstLine = max(0, (state.CurrentY + ps.rcPaint.top) / Globals.CharHeight);
// LastLine = min(LINES - 1, (state.CurrentY + ps.rcPaint.bottom) / Globals.CharHeight);
// NOTE: Can be less or greater than the actual number of lines in the text.
LastLine = (state.CurrentY + ps.rcPaint.bottom) / Globals.CharHeight;
/* Find the first text line to display */
while (FirstLine > 0)
{
if (uFormat == CF_UNICODETEXT)
{
if (*(LPCWSTR)lpText == UNICODE_NULL)
break;
GetLineExtentW(lpText, (LPCWSTR*)&ptr);
}
else
{
if (*(LPCSTR)lpText == ANSI_NULL)
break;
GetLineExtentA(lpText, (LPCSTR*)&ptr);
}
--FirstLine;
--LastLine;
lpText = ptr;
}
ptOrg.x = ps.rcPaint.left;
ptOrg.y = /* FirstLine */ max(0, (state.CurrentY + ps.rcPaint.top) / Globals.CharHeight)
* Globals.CharHeight - state.CurrentY;
/* Display each line from the current one up to the last one */
++LastLine;
while (LastLine >= 0)
{
if (uFormat == CF_UNICODETEXT)
{
if (*(LPCWSTR)lpText == UNICODE_NULL)
break;
lineSize = GetLineExtentW(lpText, (LPCWSTR*)&ptr);
TabbedTextOutW(ps.hdc, /*ptOrg.x*/0 - state.CurrentX, ptOrg.y,
lpText, lineSize, 0, NULL,
/*ptOrg.x*/0 - state.CurrentX);
}
else
{
if (*(LPCSTR)lpText == ANSI_NULL)
break;
lineSize = GetLineExtentA(lpText, (LPCSTR*)&ptr);
TabbedTextOutA(ps.hdc, /*ptOrg.x*/0 - state.CurrentX, ptOrg.y,
lpText, lineSize, 0, NULL,
/*ptOrg.x*/0 - state.CurrentX);
}
--LastLine;
ptOrg.y += Globals.CharHeight;
lpText = ptr;
}
GlobalUnlock(hGlobal);
}
void BitBltFromClipboard(HDC hdcDest, int nXDest, int nYDest, int nWidth, int nHeight, int nXSrc, int nYSrc, DWORD dwRop)
void BitBltFromClipboard(PAINTSTRUCT ps, SCROLLSTATE state, DWORD dwRop)
{
HDC hdcMem;
HBITMAP hbm;
HBITMAP hBitmap;
BITMAP bmp;
LONG bmWidth, bmHeight;
hdcMem = CreateCompatibleDC(hdcDest);
if (hdcMem)
{
hbm = (HBITMAP)GetClipboardData(CF_BITMAP);
SelectObject(hdcMem, hbm);
BitBlt(hdcDest, nXDest, nYDest, nWidth, nHeight, hdcMem, nXSrc, nYSrc, dwRop);
DeleteDC(hdcMem);
}
hdcMem = CreateCompatibleDC(ps.hdc);
if (!hdcMem)
return;
hBitmap = (HBITMAP)GetClipboardData(CF_BITMAP);
GetObjectW(hBitmap, sizeof(bmp), &bmp);
SelectObject(hdcMem, hBitmap);
bmWidth = min(ps.rcPaint.right - ps.rcPaint.left, bmp.bmWidth - ps.rcPaint.left - state.CurrentX);
bmHeight = min(ps.rcPaint.bottom - ps.rcPaint.top , bmp.bmHeight - ps.rcPaint.top - state.CurrentY);
BitBlt(ps.hdc,
ps.rcPaint.left,
ps.rcPaint.top,
bmWidth,
bmHeight,
hdcMem,
ps.rcPaint.left + state.CurrentX,
ps.rcPaint.top + state.CurrentY,
dwRop);
DeleteDC(hdcMem);
}
void SetDIBitsToDeviceFromClipboard(UINT uFormat, HDC hdc, int XDest, int YDest, int XSrc, int YSrc, UINT uStartScan, UINT fuColorUse)
void SetDIBitsToDeviceFromClipboard(UINT uFormat, PAINTSTRUCT ps, SCROLLSTATE state, UINT fuColorUse)
{
HGLOBAL hGlobal;
LPBITMAPINFOHEADER lpInfoHeader;
LPBYTE lpBits;
LONG bmWidth, bmHeight;
DWORD dwPalSize = 0;
HGLOBAL hGlobal;
hGlobal = GetClipboardData(uFormat);
if (!hGlobal)
@ -183,9 +257,9 @@ void SetDIBitsToDeviceFromClipboard(UINT uFormat, HDC hdc, int XDest, int YDest,
*
* FIXME: investigate!!
* ANSWER: this is a Windows bug; part of the answer is there:
* http://go4answers.webhost4life.com/Help/bug-clipboard-format-conversions-28724.aspx
* https://social.msdn.microsoft.com/Forums/windowsdesktop/en-US/ac7ab3b5-8609-4478-b86a-976dab44c271/bug-clipboard-format-conversions-cfdib-cfdibv5-cfdib
* May be related:
* http://blog.talosintel.com/2015/10/dangerous-clipboard.html
* https://blog.talosintelligence.com/2015/10/dangerous-clipboard.html
*/
#if 0
if ((lpInfoHeader->biSize == sizeof(BITMAPINFOHEADER)) &&
@ -196,6 +270,7 @@ void SetDIBitsToDeviceFromClipboard(UINT uFormat, HDC hdc, int XDest, int YDest,
#endif
bmWidth = lpInfoHeader->biWidth;
/* NOTE: biHeight < 0 for bottom-up DIBs, or > 0 for top-down DIBs */
bmHeight = lpInfoHeader->biHeight;
}
else
@ -207,11 +282,19 @@ void SetDIBitsToDeviceFromClipboard(UINT uFormat, HDC hdc, int XDest, int YDest,
lpBits = (LPBYTE)lpInfoHeader + lpInfoHeader->biSize + dwPalSize;
SetDIBitsToDevice(hdc,
XDest, YDest,
bmWidth, bmHeight,
XSrc, YSrc,
uStartScan,
/*
* The seventh parameter (YSrc) of SetDIBitsToDevice always designates
* the Y-coordinate of the "lower-left corner" of the image, be the DIB
* in bottom-up or top-down mode.
*/
SetDIBitsToDevice(ps.hdc,
-state.CurrentX, // ps.rcPaint.left,
-state.CurrentY, // ps.rcPaint.top,
bmWidth,
bmHeight,
0, // ps.rcPaint.left + state.CurrentX,
0, // -(ps.rcPaint.top + state.CurrentY),
0, // uStartScan,
bmHeight,
lpBits,
(LPBITMAPINFO)lpInfoHeader,
@ -248,52 +331,25 @@ void PlayEnhMetaFileFromClipboard(HDC hdc, const RECT *lpRect)
PlayEnhMetaFile(hdc, hEmf, lpRect);
}
UINT RealizeClipboardPalette(HWND hWnd)
BOOL RealizeClipboardPalette(HDC hdc)
{
HPALETTE hPalette;
HPALETTE hOldPalette;
UINT uResult;
HDC hDevContext;
if (!OpenClipboard(Globals.hMainWnd))
{
return GDI_ERROR;
}
BOOL Success;
HPALETTE hPalette, hOldPalette;
if (!IsClipboardFormatAvailable(CF_PALETTE))
{
CloseClipboard();
return GDI_ERROR;
}
return FALSE;
hPalette = GetClipboardData(CF_PALETTE);
if (!hPalette)
{
CloseClipboard();
return GDI_ERROR;
}
return FALSE;
hDevContext = GetDC(hWnd);
if (!hDevContext)
{
CloseClipboard();
return GDI_ERROR;
}
hOldPalette = SelectPalette(hDevContext, hPalette, FALSE);
hOldPalette = SelectPalette(hdc, hPalette, FALSE);
if (!hOldPalette)
{
ReleaseDC(hWnd, hDevContext);
CloseClipboard();
return GDI_ERROR;
}
return FALSE;
uResult = RealizePalette(hDevContext);
Success = (RealizePalette(hdc) != GDI_ERROR);
SelectPalette(hDevContext, hOldPalette, FALSE);
ReleaseDC(hWnd, hDevContext);
SelectPalette(hdc, hOldPalette, FALSE);
CloseClipboard();
return uResult;
return Success;
}