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[CLIPBRD] Improvements for the Clipboard Viewer.

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- 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
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12 changed files with 1000 additions and 546 deletions
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39
base/applications/clipbrd/scrollutils.h
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@ -1,22 +1,31 @@
/*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS Clipboard Viewer
* FILE: base/applications/clipbrd/scrollutils.h
* PURPOSE: Scrolling related helper functions.
* PROGRAMMERS: Ricardo Hanke
* PROJECT: ReactOS Clipboard Viewer
* LICENSE: GPL-2.0+ (https://spdx.org/licenses/GPL-2.0+)
* PURPOSE: Scrolling related helper functions.
* COPYRIGHT: Copyright 2015-2018 Ricardo Hanke
* Copyright 2015-2018 Hermes Belusca-Maito
*/
#pragma once
typedef struct _SCROLLSTATE
{
int CurrentX;
int CurrentY;
int MaxX;
int MaxY;
UINT uLinesToScroll; /* Number of lines to scroll on one wheel rotation movement (== one "click" == WHEEL_DELTA ticks) */
INT iWheelCarryoverX; /* Unused wheel ticks (< WHEEL_DELTA) */
INT iWheelCarryoverY;
INT nPageX; /* Number of lines per page */
INT nPageY;
INT CurrentX; /* Current scrollbar position */
INT CurrentY;
INT MaxX; /* Maximum scrollbar position */
INT MaxY;
INT nMaxWidth; /* Maximum span of displayed data */
INT nMaxHeight;
} 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);
BOOL ScrollBlt(PAINTSTRUCT ps, HBITMAP hBmp, SCROLLSTATE state);
void OnKeyScroll(HWND hWnd, WPARAM wParam, LPARAM lParam, LPSCROLLSTATE state);
void OnMouseScroll(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam, LPSCROLLSTATE state);
void OnScroll(HWND hWnd, INT nBar, WPARAM wParam, INT iDelta, LPSCROLLSTATE state);
void UpdateLinesToScroll(LPSCROLLSTATE state);
void UpdateWindowScrollState(HWND hWnd, INT nMaxWidth, INT nMaxHeight, LPSCROLLSTATE lpState);