289 lines
7.3 KiB
C++
289 lines
7.3 KiB
C++
/*
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* CiderPress
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* Copyright (C) 2007 by faddenSoft, LLC. All Rights Reserved.
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* See the file LICENSE for distribution terms.
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*/
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/*
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* Miscellaneous utility classes.
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*/
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#ifndef UTIL_UTIL_H
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#define UTIL_UTIL_H
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#include <sal.h>
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/*
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* Gripper for a resizable window.
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*/
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class CGripper: public CScrollBar {
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protected:
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afx_msg LRESULT OnNcHitTest(CPoint point);
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DECLARE_MESSAGE_MAP()
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};
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/*
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* Transfer a buffer of data into a rich edit control.
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*/
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class RichEditXfer {
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public:
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RichEditXfer(const void* buf, long len) : fBuf((char*)buf), fLen(len)
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{}
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static DWORD CALLBACK EditStreamCallback(DWORD dwCookie, LPBYTE pbBuff,
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LONG cb, LONG* pcb);
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const char* fBuf;
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long fLen;
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private:
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DECLARE_COPY_AND_OPEQ(RichEditXfer)
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};
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/*
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* Buffer that expands as data is added to it with stdio-style calls.
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*/
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class ExpandBuffer {
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public:
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ExpandBuffer(long initialSize = 65536) {
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ASSERT(initialSize > 0);
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fInitialSize = initialSize;
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fWorkBuf = NULL;
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fWorkCount = fWorkMax = 0;
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}
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virtual ~ExpandBuffer(void) {
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if (fWorkBuf != NULL) {
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LOGI("ExpandBuffer: fWorkBuf not seized; freeing");
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delete[] fWorkBuf;
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}
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}
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/*
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* Allocate the initial buffer.
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*/
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virtual int CreateWorkBuf(void);
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void Reset(void) {
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delete[] fWorkBuf;
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fWorkBuf = NULL;
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fWorkCount = fWorkMax = 0;
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}
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// Copy printf-formatted output into the output buffer.
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void Printf(_Printf_format_string_ const char* format, ...);
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// Write binary data to the buffer.
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void Write(const unsigned char* buf, long len);
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// Put a single character in.
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void Putc(char ch);
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// Seize control of the buffer. It will be the caller's duty to call
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// delete[] to free it.
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virtual void SeizeBuffer(char** ppBuf, long* pLen);
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protected:
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/*
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* Grow the buffer to the next incremental size. We keep doubling it until
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* we reach out maximum rate of expansion.
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*
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* Returns 0 on success, -1 on failure.
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*/
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virtual int GrowWorkBuf(void);
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enum {
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kWorkBufMaxIncrement = 4*1024*1024, // limit increase to 4MB jumps
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};
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long fInitialSize; // initial size of the work buffer
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char* fWorkBuf; // work in progress
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long fWorkCount; // quantity of data in buffer
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long fWorkMax; // maximum size of buffer
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private:
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DECLARE_COPY_AND_OPEQ(ExpandBuffer)
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};
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/*
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* ====================================
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* Windows helpers
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* ====================================
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*/
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/*
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* Enable or disable a control.
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*/
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void EnableControl(CDialog* pDlg, int id, bool enable=true);
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/*
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* Move a control so it maintains its same position relative to the bottom
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* and right edges.
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*/
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void MoveControl(CDialog* pDlg, int id, int deltaX, int deltaY,
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bool redraw = true);
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/*
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* Make a control larger by the same delta as the parent window.
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*/
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void StretchControl(CDialog* pDlg, int id, int deltaX, int deltaY,
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bool redraw = true);
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/*
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* Stretch and move a control.
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*/
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void MoveStretchControl(CDialog* pDlg, int id, int moveX, int moveY,
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int stretchX, int stretchY, bool redraw = true);
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/*
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* Move a control so it maintains its same position relative to the bottom
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* and right edges.
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*/
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HDWP MoveControl(HDWP hdwp, CDialog* pDlg, int id, int deltaX, int deltaY,
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bool redraw = true);
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/*
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* Make a control larger by the same delta as the parent window.
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*/
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HDWP StretchControl(HDWP hdwp, CDialog* pDlg, int id, int deltaX, int deltaY,
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bool redraw = true);
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/*
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* Stretch and move a control.
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*/
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HDWP MoveStretchControl(HDWP hdwp, CDialog* pDlg, int id, int moveX, int moveY,
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int stretchX, int stretchY, bool redraw = true);
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/*
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* Get the check state of a button in a dialog.
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*/
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int GetDlgButtonCheck(CWnd* pWnd, int id);
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/*
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* Set the check state of a button in a dialog.
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*/
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void SetDlgButtonCheck(CWnd* pWnd, int id, int checkVal);
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/*
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* Create a font, using defaults for most things.
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*/
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void CreateSimpleFont(CFont* pFont, CWnd* pWnd, const WCHAR* typeFace,
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int pointSize);
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/*
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* Get a Win32 error string for an error code returned by GetLastError.
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*/
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void GetWin32ErrorString(DWORD err, CString* pStr);
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/*
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* Post a failure message in a message box.
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*/
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void ShowFailureMsg(CWnd* pWnd, const CString& msg, int titleStrID);
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/*
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* Post a failure message in a message box.
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*/
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void ShowFailureMsg(CWnd* pWnd, int msgId, int titleStrID);
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/*
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* Returns "true" if we're running on Win9x (Win95, Win98, WinME), "false"
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* if not (could be WinNT/2K/XP or even Win31 with Win32s).
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*/
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bool IsWin9x(void);
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/*
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* Wrapper for CString::LoadString that checks the return value and logs a
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* complaint if the load fails.
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*/
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void CheckedLoadString(CString* pString, UINT nID);
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/*
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* Returns the desktop scaling factor (usually 1.0). Assumes vertical and
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* horizontal scaling is identical.
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*/
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float GetDesktopScaleFactor();
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/*
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* ====================================
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* Miscellaneous functions
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* ====================================
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*/
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/*
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* Pull a pascal string out of a buffer and stuff it into "*pStr".
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*
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* Returns the length of the string found, or -1 on error.
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*/
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int GetPascalString(const uint8_t* buf, long maxLen, CString* pStr);
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/*
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* Dump a block of stuff to the log file.
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*/
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void LogHexDump(const void* buf, long len);
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/*
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* Compute a percentage.
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*/
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int ComputePercent(LONGLONG part, LONGLONG full);
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/*
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* Format a time_t into a string.
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*
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* (Should take format as an argument, so we can use global format set by
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* user preferences.)
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*/
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void FormatDate(time_t when, CString* pStr);
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/*
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* Case-insensitive version of strstr(), pulled from the MSDN stuff that
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* comes with VC++6.0.
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*
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* The isalpha() stuff is an optimization, so they can skip the tolower()
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* in the outer loop comparison.
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*/
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const WCHAR* Stristr(const WCHAR* string1, const WCHAR* string2);
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/*
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* Break a string down into its component parts.
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*
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* "mangle" will be mangled (various bits stomped by '\0'), "argv" will
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* receive pointers to the strings, and "*pArgc" will hold the number of
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* arguments in the vector. The initial value of "*pArgc" should hold the
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* maximum "argv" capacity (including program name in argv[0]).
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*
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* The argv pointers will point into "mangle"; no new storage will be
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* allocated.
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*/
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void VectorizeString(WCHAR* mangle, WCHAR** argv, int* pArgc);
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/*
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* Convert parts of the Mac OS Roman filename to lower case.
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*
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* If the name already has lowercase characters, do nothing.
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*/
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void InjectLowercase(CStringA* pStr);
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/*
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* Test to see if a sub-string matches a value in a set of strings. The set
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* comes from a semicolon-delimited string.
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*/
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bool MatchSemicolonList(const CString set, const CString match);
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/*
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* Like strcpy(), but allocate with new[] instead.
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*
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* If "str" is NULL, or "new" fails, this returns NULL.
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*
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* TODO: this should be "StrdupNew()".
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*/
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char* StrcpyNew(const char* str);
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/* time_t values for bad dates */
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#define kDateNone ((time_t) -2)
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#define kDateInvalid ((time_t) -1) // should match return from mktime()
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#endif /*UTIL_UTIL_H*/
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