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//// Style - simple character styles for formatted text
//
// Provides a simple style selection mechanism for demostrating
// formatted text.
#include "precomp.hxx"
#include "global.h"
#include <tchar.h>
/*
void SetLogFont( PLOGFONTA plf, int iHeight, int iWeight, int iItalic, int iUnderline, char *pcFaceName) {
memset(plf, 0, sizeof(LOGFONTA)); plf->lfCharSet = DEFAULT_CHARSET; plf->lfHeight = iHeight; plf->lfWeight = iWeight; plf->lfItalic = (BYTE) iItalic; plf->lfUnderline = (BYTE) iUnderline; lstrcpy(plf->lfFaceName, pcFaceName); plf->lfOutPrecision = OUT_STROKE_PRECIS; plf->lfClipPrecision = CLIP_STROKE_PRECIS; plf->lfQuality = DRAFT_QUALITY; plf->lfPitchAndFamily = VARIABLE_PITCH; plf->lfEscapement = 0; plf->lfOrientation = 0;}*/
void FreeStyle(int iStyle) {
/*
if (g_style[iStyle].hf) { DeleteObject(g_style[iStyle].hf); }
if (g_style[iStyle].sc) { ScriptFreeCache(&g_style[iStyle].sc); } */
}
void SetStyle( int iStyle, int iHeight, int iWeight, int iItalic, int iUnderline, int iStrikeout, TCHAR *pcFaceName) {
LOGFONTA lf;
FreeStyle(iStyle);
//SetLogFont(&lf, iHeight, iWeight, iItalic, iUnderline, pcFaceName);
//g_style[iStyle].hf = CreateFontIndirect(&lf);
//g_style[iStyle].sc = NULL;
g_style[iStyle].emSize = REAL(iHeight); for (UINT i=0; i<_tcslen(pcFaceName); i++) { g_style[iStyle].faceName[i] = pcFaceName[i]; } g_style[iStyle].faceName[_tcslen(pcFaceName)] = 0; g_style[iStyle].style = (iWeight >= 700 ? FontStyleBold : 0) + (iItalic ? FontStyleItalic : 0) + (iUnderline ? FontStyleUnderline : 0) + (iStrikeout ? FontStyleStrikeout : 0);}
void InitStyles() {
memset(g_style, 0, sizeof(g_style));}
void FreeStyles() { int i; for (i=0; i<5; i++) { FreeStyle(i); }}
//// StyleCheckRange - dir use in ASSERTs
//
// Returns TRUE if style length matches text length
BOOL StyleCheckRange() {
int iFormatPos; RUN *pFormatRider;
// Check that style length is same as text length
pFormatRider = g_pFirstFormatRun; iFormatPos = 0; while (pFormatRider != NULL) {
iFormatPos += pFormatRider->iLen; pFormatRider = pFormatRider->pNext; }
return iFormatPos == g_iTextLen;}
///// Style range manipulation
//
// StyleDeleteRange
// StyleExtendRange
// StyleSetRange
//
// The style list is a linked list of RUNs (see global.h) that
// covers the entire text buffer.
//
// Each run has a length, and a style number (an index to g_Style[])
// (The analysis field in the run is not used by the style list.)
//
// StyleDeleteRange and StyleExtendRange are called as part of text
// insertion/deletion to maintain the style list.
//
// StyleSetRange is called to change the style of the current selection
// when the user clicks on one the of the numbered style buttons.
/// StyleDeleteRange - delete range of style information
//
//
void StyleDeleteRange( int iDelPos, int iDelLen) {
int iFormatPos; RUN *pFormatRider; RUN *pPrevRun; RUN *pDelRun; // Run to be deleted
if (iDelLen <= 0) return;
// Find first run affected by the deletion
iFormatPos = 0; pFormatRider = g_pFirstFormatRun; pPrevRun = NULL; while (iFormatPos + pFormatRider->iLen <= iDelPos) { iFormatPos += pFormatRider->iLen; pPrevRun = pFormatRider; pFormatRider = pFormatRider->pNext; ASSERT(pFormatRider); }
// Delete from end of first run
if (iDelPos + iDelLen > iFormatPos + pFormatRider->iLen) {
// Delete all the way from iDelPos to the end of the first affected run
iDelLen = iDelPos + iDelLen - (iFormatPos + pFormatRider->iLen); // Amount that will remain to be deleted
pFormatRider->iLen = iDelPos - iFormatPos;
} else {
// Deletion is entirely in the first affected run
pFormatRider->iLen -= iDelLen; iDelLen = 0; }
// First affected run now contains no range to be deleted
// If it's empty, remove it, otherwise step over it
if (pFormatRider->iLen == 0) {
// Remove redundant run
if (pFormatRider->pNext) {
// Replace this run by the next one
pDelRun = pFormatRider->pNext; *pFormatRider = *pDelRun; // Copy content of next run over this one
delete pDelRun;
} else {
// No runs following this one
if (pPrevRun) {
ASSERT(iDelLen == 0); delete pFormatRider; pPrevRun->pNext = NULL;
} else {
// No runs left at all
ASSERT(iDelLen == 0); delete pFormatRider; g_pFirstFormatRun = NULL; } }
} else {
// Current run now contains no text to be deleted, so advance to next run
iFormatPos += pFormatRider->iLen; pPrevRun = pFormatRider; pFormatRider = pFormatRider->pNext; }
// Delete from start of any remaining runs
while (iDelLen > 0) {
if (pFormatRider->iLen <= iDelLen) {
// This entire run must go
ASSERT(pFormatRider->pNext); iDelLen -= pFormatRider->iLen; pDelRun = pFormatRider->pNext; *pFormatRider = *pDelRun; delete pDelRun;
} else {
// Last run is deleted in part only
pFormatRider->iLen -= iDelLen; iDelLen = 0; } }
// Check whether current run (which immediately follows deletion) can
// now be collapsed into the previous run
if (pPrevRun && pFormatRider && pPrevRun->iStyle == pFormatRider->iStyle) {
pPrevRun->iLen += pFormatRider->iLen; pPrevRun->pNext = pFormatRider->pNext; delete pFormatRider; }}
/// StyleExtendRange - Extend style immediately preceeding iPos by iLen characters
//
//
void StyleExtendRange( int iExtPos, int iExtLen) {
int iFormatPos; RUN *pFormatRider;
const SCRIPT_ANALYSIS nullAnalysis = {0};
if (g_pFirstFormatRun == NULL) {
// Starting from no text at all
ASSERT(iExtPos == 0);
g_pFirstFormatRun = new RUN; g_pFirstFormatRun->iLen = iExtLen; g_pFirstFormatRun->iStyle = 1; g_pFirstFormatRun->pNext = NULL; g_pFirstFormatRun->analysis = nullAnalysis;
} else {
// Find run containing character immediately prior to iExtPos
iFormatPos = 0; pFormatRider = g_pFirstFormatRun;
while (iFormatPos + pFormatRider->iLen < iExtPos) { iFormatPos += pFormatRider->iLen; pFormatRider = pFormatRider->pNext; }
pFormatRider->iLen += iExtLen;
}}
//// StyleSetRange - Change style for a given range
//
//
void StyleSetRange( int iSetStyle, int iSetPos, int iSetLen) {
int iFormatPos; RUN *pFormatRider; RUN *pNewRun;
if (iSetLen <= 0) return;
// Remove existing style for the range
StyleDeleteRange(iSetPos, iSetLen);
if (g_pFirstFormatRun == NULL) {
// Replace style on entire text
g_pFirstFormatRun = new RUN; g_pFirstFormatRun->pNext = NULL; g_pFirstFormatRun->iLen = iSetLen; g_pFirstFormatRun->iStyle = iSetStyle;
} else {
// Find first run affected by the change
iFormatPos = 0; pFormatRider = g_pFirstFormatRun; while (iFormatPos + pFormatRider->iLen < iSetPos) { iFormatPos += pFormatRider->iLen; pFormatRider = pFormatRider->pNext; ASSERT(pFormatRider); }
// New style starts after beginning of this run or at beginning of next run
if (pFormatRider->iStyle == iSetStyle) {
// Already the same style - just increase length
pFormatRider->iLen += iSetLen;
} else {
if (iFormatPos + pFormatRider->iLen > iSetPos) {
// New style is within this run
// Split this run around the new run
pNewRun = new RUN; // Create second part of existing run
*pNewRun = *pFormatRider; pNewRun->iLen -= iSetPos - iFormatPos; pFormatRider->iLen = iSetPos - iFormatPos; pFormatRider->pNext = pNewRun;
pNewRun = new RUN; // Create inserted run
*pNewRun = *pFormatRider; pNewRun->iLen = iSetLen; pNewRun->iStyle = iSetStyle; pFormatRider->pNext = pNewRun;
} else {
// New style is between this run and the next run
if ( pFormatRider->pNext && pFormatRider->pNext->iStyle == iSetStyle) {
// New style is same as adjacent following run
pFormatRider->pNext->iLen += iSetLen;
} else {
// Create new run between current run and next run
pNewRun = new RUN; *pNewRun = *pFormatRider; pNewRun->iStyle = iSetStyle; pNewRun->iLen = iSetLen; pFormatRider->pNext = pNewRun; } } } }}
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