BOOL ME_WrapMarkedParagraphs(ME_TextEditor *editor) {
ME_DisplayItem *item;
ME_Context c;
BOOL bModified = FALSE;
int yStart = -1;
ME_InitContext(&c, editor, GetDC(editor->hWnd));
editor->nHeight = 0;
item = editor->pBuffer->pFirst->next;
while(item != editor->pBuffer->pLast) {
BOOL bRedraw = FALSE;
assert(item->type == diParagraph);
editor->nHeight = max(editor->nHeight, item->member.para.nYPos);
if ((item->member.para.nFlags & MEPF_REWRAP)
|| (item->member.para.nYPos != c.pt.y))
bRedraw = TRUE;
item->member.para.nYPos = c.pt.y;
ME_WrapTextParagraph(&c, item, editor->selofs);
if (bRedraw)
{
item->member.para.nFlags |= MEPF_REPAINT;
if (yStart == -1)
yStart = c.pt.y;
}
bModified = bModified | bRedraw;
c.pt.y += item->member.para.nHeight;
item = item->member.para.next_para;
}
editor->sizeWindow.cx = c.rcView.right-c.rcView.left;
editor->sizeWindow.cy = c.rcView.bottom-c.rcView.top;
editor->nTotalLength = c.pt.y;
ME_DestroyContext(&c, editor->hWnd);
/* Each paragraph may contain multiple rows, which should be scrollable, even
if the containing paragraph has nYPos == 0 */
item = editor->pBuffer->pFirst;
while ((item = ME_FindItemFwd(item, diStartRow)) != NULL) {
assert(item->type == diStartRow);
editor->nHeight = max(editor->nHeight, item->member.row.nYPos);
}
if (bModified || editor->nTotalLength < editor->nLastTotalLength)
ME_InvalidateMarkedParagraphs(editor);
return bModified;
}
void
ME_InvalidateSelection(ME_TextEditor *editor)
{
ME_DisplayItem *para1, *para2;
int nStart, nEnd;
int len = ME_GetTextLength(editor);
ME_GetSelection(editor, &nStart, &nEnd);
/* if both old and new selection are 0-char (= caret only), then
there's no (inverted) area to be repainted, neither old nor new */
if (nStart == nEnd && editor->nLastSelStart == editor->nLastSelEnd)
return;
ME_WrapMarkedParagraphs(editor);
ME_GetSelectionParas(editor, ¶1, ¶2);
assert(para1->type == diParagraph);
assert(para2->type == diParagraph);
/* last selection markers aren't always updated, which means
they can point past the end of the document */
if (editor->nLastSelStart > len)
editor->nLastSelEnd = len;
if (editor->nLastSelEnd > len)
editor->nLastSelEnd = len;
/* if the start part of selection is being expanded or contracted... */
if (nStart < editor->nLastSelStart) {
ME_MarkForPainting(editor, para1, ME_FindItemFwd(editor->pLastSelStartPara, diParagraphOrEnd));
} else
if (nStart > editor->nLastSelStart) {
ME_MarkForPainting(editor, editor->pLastSelStartPara, ME_FindItemFwd(para1, diParagraphOrEnd));
}
/* if the end part of selection is being contracted or expanded... */
if (nEnd < editor->nLastSelEnd) {
ME_MarkForPainting(editor, para2, ME_FindItemFwd(editor->pLastSelEndPara, diParagraphOrEnd));
} else
if (nEnd > editor->nLastSelEnd) {
ME_MarkForPainting(editor, editor->pLastSelEndPara, ME_FindItemFwd(para2, diParagraphOrEnd));
}
ME_InvalidateMarkedParagraphs(editor);
/* remember the last invalidated position */
ME_GetSelection(editor, &editor->nLastSelStart, &editor->nLastSelEnd);
ME_GetSelectionParas(editor, &editor->pLastSelStartPara, &editor->pLastSelEndPara);
assert(editor->pLastSelStartPara->type == diParagraph);
assert(editor->pLastSelEndPara->type == diParagraph);
}
BOOL ME_WrapMarkedParagraphs(ME_TextEditor *editor)
{
ME_DisplayItem *item;
ME_Context c;
int totalWidth = 0;
ME_DisplayItem *repaint_start = NULL, *repaint_end = NULL;
ME_InitContext(&c, editor, ITextHost_TxGetDC(editor->texthost));
c.pt.x = 0;
item = editor->pBuffer->pFirst->next;
while(item != editor->pBuffer->pLast) {
BOOL bRedraw = FALSE;
assert(item->type == diParagraph);
if ((item->member.para.nFlags & MEPF_REWRAP)
|| (item->member.para.pt.y != c.pt.y))
bRedraw = TRUE;
item->member.para.pt = c.pt;
ME_WrapTextParagraph(&c, item);
if (bRedraw)
ME_MarkRepaintEnd(item, &repaint_start, &repaint_end);
if (item->member.para.nFlags & MEPF_ROWSTART)
{
ME_DisplayItem *cell = ME_FindItemFwd(item, diCell);
ME_DisplayItem *endRowPara;
int borderWidth = 0;
cell->member.cell.pt = c.pt;
/* Offset the text by the largest top border width. */
while (cell->member.cell.next_cell) {
borderWidth = max(borderWidth, cell->member.cell.border.top.width);
cell = cell->member.cell.next_cell;
}
endRowPara = ME_FindItemFwd(cell, diParagraph);
assert(endRowPara->member.para.nFlags & MEPF_ROWEND);
if (borderWidth > 0)
{
borderWidth = max(ME_twips2pointsY(&c, borderWidth), 1);
while (cell) {
cell->member.cell.yTextOffset = borderWidth;
cell = cell->member.cell.prev_cell;
}
c.pt.y += borderWidth;
}
if (endRowPara->member.para.pFmt->dxStartIndent > 0)
{
int dxStartIndent = endRowPara->member.para.pFmt->dxStartIndent;
cell = ME_FindItemFwd(item, diCell);
cell->member.cell.pt.x += ME_twips2pointsX(&c, dxStartIndent);
c.pt.x = cell->member.cell.pt.x;
}
}
else if (item->member.para.nFlags & MEPF_ROWEND)
{
/* Set all the cells to the height of the largest cell */
ME_DisplayItem *startRowPara;
int prevHeight, nHeight, bottomBorder = 0;
ME_DisplayItem *cell = ME_FindItemBack(item, diCell);
item->member.para.nWidth = cell->member.cell.pt.x + cell->member.cell.nWidth;
if (!(item->member.para.next_para->member.para.nFlags & MEPF_ROWSTART))
{
/* Last row, the bottom border is added to the height. */
cell = cell->member.cell.prev_cell;
while (cell)
{
bottomBorder = max(bottomBorder, cell->member.cell.border.bottom.width);
cell = cell->member.cell.prev_cell;
}
bottomBorder = ME_twips2pointsY(&c, bottomBorder);
cell = ME_FindItemBack(item, diCell);
}
prevHeight = cell->member.cell.nHeight;
nHeight = cell->member.cell.prev_cell->member.cell.nHeight + bottomBorder;
cell->member.cell.nHeight = nHeight;
item->member.para.nHeight = nHeight;
cell = cell->member.cell.prev_cell;
cell->member.cell.nHeight = nHeight;
while (cell->member.cell.prev_cell)
{
cell = cell->member.cell.prev_cell;
cell->member.cell.nHeight = nHeight;
}
/* Also set the height of the start row paragraph */
startRowPara = ME_FindItemBack(cell, diParagraph);
startRowPara->member.para.nHeight = nHeight;
c.pt.x = startRowPara->member.para.pt.x;
c.pt.y = cell->member.cell.pt.y + nHeight;
if (prevHeight < nHeight)
{
/* The height of the cells has grown, so invalidate the bottom of
* the cells. */
ME_MarkRepaintEnd(item, &repaint_start, &repaint_end);
cell = ME_FindItemBack(item, diCell);
while (cell) {
ME_MarkRepaintEnd(ME_FindItemBack(cell, diParagraph), &repaint_start, &repaint_end);
cell = cell->member.cell.prev_cell;
}
}
}
else if (item->member.para.pCell &&
item->member.para.pCell != item->member.para.next_para->member.para.pCell)
{
/* The next paragraph is in the next cell in the table row. */
ME_Cell *cell = &item->member.para.pCell->member.cell;
cell->nHeight = c.pt.y + item->member.para.nHeight - cell->pt.y;
/* Propagate the largest height to the end so that it can be easily
* sent back to all the cells at the end of the row. */
if (cell->prev_cell)
cell->nHeight = max(cell->nHeight, cell->prev_cell->member.cell.nHeight);
c.pt.x = cell->pt.x + cell->nWidth;
c.pt.y = cell->pt.y;
cell->next_cell->member.cell.pt = c.pt;
if (!(item->member.para.next_para->member.para.nFlags & MEPF_ROWEND))
c.pt.y += cell->yTextOffset;
}
else
{
if (item->member.para.pCell) {
/* Next paragraph in the same cell. */
c.pt.x = item->member.para.pCell->member.cell.pt.x;
} else {
/* Normal paragraph */
c.pt.x = 0;
}
c.pt.y += item->member.para.nHeight;
}
totalWidth = max(totalWidth, item->member.para.nWidth);
item = item->member.para.next_para;
}
editor->sizeWindow.cx = c.rcView.right-c.rcView.left;
editor->sizeWindow.cy = c.rcView.bottom-c.rcView.top;
editor->nTotalLength = c.pt.y;
editor->nTotalWidth = totalWidth;
editor->pBuffer->pLast->member.para.pt.x = 0;
editor->pBuffer->pLast->member.para.pt.y = c.pt.y;
ME_DestroyContext(&c);
if (repaint_start || editor->nTotalLength < editor->nLastTotalLength)
{
if (!repaint_start) repaint_start = editor->pBuffer->pFirst;
ME_InvalidateMarkedParagraphs(editor, repaint_start, repaint_end);
}
return !!repaint_start;
}