void ME_InvalidateMarkedParagraphs(ME_TextEditor *editor) {
ME_Context c;
ME_InitContext(&c, editor, GetDC(editor->hWnd));
if (editor->bRedraw)
{
RECT rc = c.rcView;
int ofs = ME_GetYScrollPos(editor);
ME_DisplayItem *item = editor->pBuffer->pFirst;
while(item != editor->pBuffer->pLast) {
if (item->member.para.nFlags & MEPF_REPAINT) {
rc.top = item->member.para.nYPos - ofs;
rc.bottom = item->member.para.nYPos + item->member.para.nHeight - ofs;
InvalidateRect(editor->hWnd, &rc, TRUE);
}
item = item->member.para.next_para;
}
if (editor->nTotalLength < editor->nLastTotalLength)
{
rc.top = editor->nTotalLength - ofs;
rc.bottom = editor->nLastTotalLength - ofs;
InvalidateRect(editor->hWnd, &rc, TRUE);
}
}
ME_DestroyContext(&c, editor->hWnd);
}
void ME_LButtonDown(ME_TextEditor *editor, int x, int y)
{
ME_Cursor tmp_cursor;
int is_selection = 0;
editor->nUDArrowX = -1;
y += ME_GetYScrollPos(editor);
tmp_cursor = editor->pCursors[0];
is_selection = ME_IsSelection(editor);
ME_FindPixelPos(editor, x, y, &editor->pCursors[0], &editor->bCaretAtEnd);
if (GetKeyState(VK_SHIFT)>=0)
{
editor->pCursors[1] = editor->pCursors[0];
}
else
{
if (!is_selection) {
editor->pCursors[1] = tmp_cursor;
is_selection = 1;
}
}
ME_InvalidateSelection(editor);
HideCaret(editor->hWnd);
ME_MoveCaret(editor);
ShowCaret(editor->hWnd);
ME_ClearTempStyle(editor);
ME_SendSelChange(editor);
}
void ME_EnsureVisible(ME_TextEditor *editor, ME_DisplayItem *pRun)
{
ME_DisplayItem *pRow = ME_FindItemBack(pRun, diStartRow);
ME_DisplayItem *pPara = ME_FindItemBack(pRun, diParagraph);
int y, yrel, yheight, yold;
HWND hWnd = editor->hWnd;
assert(pRow);
assert(pPara);
y = pPara->member.para.nYPos+pRow->member.row.nYPos;
yheight = pRow->member.row.nHeight;
yold = ME_GetYScrollPos(editor);
yrel = y - yold;
if (yrel < 0) {
editor->nScrollPosY = y;
SetScrollPos(hWnd, SB_VERT, y, TRUE);
if (editor->bRedraw)
{
ScrollWindow(hWnd, 0, -yrel, NULL, NULL);
UpdateWindow(hWnd);
}
} else if (yrel + yheight > editor->sizeWindow.cy) {
int newy = y+yheight-editor->sizeWindow.cy;
editor->nScrollPosY = newy;
SetScrollPos(hWnd, SB_VERT, newy, TRUE);
if (editor->bRedraw)
{
ScrollWindow(hWnd, 0, -(newy-yold), NULL, NULL);
UpdateWindow(hWnd);
}
}
}
int
ME_CharFromPos(ME_TextEditor *editor, int x, int y)
{
ME_Cursor cursor;
RECT rc;
GetClientRect(editor->hWnd, &rc);
if (x < 0 || y < 0 || x >= rc.right || y >= rc.bottom)
return -1;
y += ME_GetYScrollPos(editor);
ME_FindPixelPos(editor, x, y, &cursor, NULL);
return (ME_GetParagraph(cursor.pRun)->member.para.nCharOfs
+ cursor.pRun->member.run.nCharOfs + cursor.nOffset);
}
void ME_MouseMove(ME_TextEditor *editor, int x, int y)
{
ME_Cursor tmp_cursor;
y += ME_GetYScrollPos(editor);
tmp_cursor = editor->pCursors[0];
/* FIXME: do something with the return value of ME_FindPixelPos */
if (!editor->linesel)
ME_FindPixelPos(editor, x, y, &tmp_cursor, &editor->bCaretAtEnd);
else ME_FindPixelPos(editor, (y > editor->sely) * editor->rcFormat.right, y, &tmp_cursor, &editor->bCaretAtEnd);
if (!memcmp(&tmp_cursor, editor->pCursors, sizeof(tmp_cursor)))
return;
ME_InvalidateSelection(editor);
if (!editor->linesel)
editor->pCursors[0] = tmp_cursor;
else if (!memcmp(&tmp_cursor, editor->pCursors+2, sizeof(tmp_cursor)) ||
!memcmp(&tmp_cursor, editor->pCursors+3, sizeof(tmp_cursor)))
{
editor->pCursors[0] = editor->pCursors[2];
editor->pCursors[1] = editor->pCursors[3];
}
else if (y < editor->sely)
{
editor->pCursors[0] = tmp_cursor;
editor->pCursors[1] = editor->pCursors[2];
}
else
{
editor->pCursors[0] = tmp_cursor;
editor->pCursors[1] = editor->pCursors[3];
}
HideCaret(editor->hWnd);
ME_MoveCaret(editor);
ME_InvalidateSelection(editor);
ShowCaret(editor->hWnd);
ME_SendSelChange(editor);
}
void ME_MouseMove(ME_TextEditor *editor, int x, int y)
{
ME_Cursor tmp_cursor;
y += ME_GetYScrollPos(editor);
tmp_cursor = editor->pCursors[0];
/* FIXME: do something with the return value of ME_FindPixelPos */
ME_FindPixelPos(editor, x, y, &tmp_cursor, &editor->bCaretAtEnd);
if (tmp_cursor.pRun == editor->pCursors[0].pRun &&
tmp_cursor.nOffset == editor->pCursors[0].nOffset)
return;
ME_InvalidateSelection(editor);
editor->pCursors[0] = tmp_cursor;
HideCaret(editor->hWnd);
ME_MoveCaret(editor);
ME_InvalidateSelection(editor);
ShowCaret(editor->hWnd);
ME_SendSelChange(editor);
}
void ME_LButtonDown(ME_TextEditor *editor, int x, int y)
{
ME_Cursor tmp_cursor;
int is_selection = 0;
editor->nUDArrowX = -1;
y += ME_GetYScrollPos(editor);
tmp_cursor = editor->pCursors[0];
is_selection = ME_IsSelection(editor);
if (x >= editor->selofs)
{
ME_FindPixelPos(editor, x, y, &editor->pCursors[0], &editor->bCaretAtEnd);
if (GetKeyState(VK_SHIFT)>=0)
{
editor->pCursors[1] = editor->pCursors[0];
}
else if (!is_selection) {
editor->pCursors[1] = tmp_cursor;
is_selection = 1;
}
ME_InvalidateSelection(editor);
HideCaret(editor->hWnd);
ME_MoveCaret(editor);
ShowCaret(editor->hWnd);
ME_ClearTempStyle(editor);
ME_SendSelChange(editor);
}
else
{
ME_DisplayItem *pRow;
editor->linesel = 1;
editor->sely = y;
/* Set pCursors[0] to beginning of line */
ME_FindPixelPos(editor, x, y, &editor->pCursors[1], &editor->bCaretAtEnd);
/* Set pCursors[1] to end of line */
pRow = ME_FindItemFwd(editor->pCursors[1].pRun, diStartRowOrParagraphOrEnd);
assert(pRow);
/* pCursor[0] is the position where the cursor will be drawn,
* pCursor[1] is the other end of the selection range
* pCursor[2] and [3] are backups of [0] and [1] so I
* don't have to look them up again
*/
if (pRow->type == diStartRow) {
/* FIXME WTF was I thinking about here ? */
ME_DisplayItem *pRun = ME_FindItemFwd(pRow, diRun);
assert(pRun);
editor->pCursors[0].pRun = pRun;
editor->pCursors[0].nOffset = 0;
editor->bCaretAtEnd = 1;
} else {
editor->pCursors[0].pRun = ME_FindItemBack(pRow, diRun);
assert(editor->pCursors[0].pRun && editor->pCursors[0].pRun->member.run.nFlags & MERF_ENDPARA);
editor->pCursors[0].nOffset = 0;
editor->bCaretAtEnd = 0;
}
editor->pCursors[2] = editor->pCursors[0];
editor->pCursors[3] = editor->pCursors[1];
ME_InvalidateSelection(editor);
HideCaret(editor->hWnd);
ME_MoveCaret(editor);
ShowCaret(editor->hWnd);
ME_ClearTempStyle(editor);
ME_SendSelChange(editor);
}
}
void
ME_GetCursorCoordinates(ME_TextEditor *editor, ME_Cursor *pCursor,
int *x, int *y, int *height)
{
ME_DisplayItem *pCursorRun = pCursor->pRun;
ME_DisplayItem *pSizeRun = pCursor->pRun;
assert(!pCursor->nOffset || !editor->bCaretAtEnd);
assert(height && x && y);
assert(!(ME_GetParagraph(pCursorRun)->member.para.nFlags & MEPF_REWRAP));
assert(pCursor->pRun);
assert(pCursor->pRun->type == diRun);
if (pCursorRun->type == diRun) {
ME_DisplayItem *row = ME_FindItemBack(pCursorRun, diStartRowOrParagraph);
if (row) {
HDC hDC = GetDC(editor->hWnd);
ME_Context c;
ME_DisplayItem *run = pCursorRun;
ME_DisplayItem *para = NULL;
SIZE sz = {0, 0};
ME_InitContext(&c, editor, hDC);
if (!pCursor->nOffset && !editor->bCaretAtEnd)
{
ME_DisplayItem *prev = ME_FindItemBack(pCursorRun, diRunOrStartRow);
assert(prev);
if (prev->type == diRun)
pSizeRun = prev;
}
assert(row->type == diStartRow); /* paragraph -> run without start row ?*/
para = ME_FindItemBack(row, diParagraph);
assert(para);
assert(para->type == diParagraph);
if (editor->bCaretAtEnd && !pCursor->nOffset &&
run == ME_FindItemFwd(row, diRun))
{
ME_DisplayItem *tmp = ME_FindItemBack(row, diRunOrParagraph);
assert(tmp);
if (tmp->type == diRun)
{
row = ME_FindItemBack(tmp, diStartRow);
pSizeRun = run = tmp;
assert(run);
assert(run->type == diRun);
sz = ME_GetRunSize(&c, ¶->member.para,
&run->member.run, ME_StrLen(run->member.run.strText),
row->member.row.nLMargin);
}
}
if (pCursor->nOffset && !(run->member.run.nFlags & MERF_SKIPPED)) {
sz = ME_GetRunSize(&c, ¶->member.para, &run->member.run, pCursor->nOffset,
row->member.row.nLMargin);
}
*height = pSizeRun->member.run.nAscent + pSizeRun->member.run.nDescent;
*x = run->member.run.pt.x + sz.cx;
*y = para->member.para.nYPos + row->member.row.nBaseline + pSizeRun->member.run.pt.y - pSizeRun->member.run.nAscent - ME_GetYScrollPos(editor);
ME_DestroyContext(&c, editor->hWnd);
return;
}
}
*height = 10; /* FIXME use global font */
*x = 0;
*y = 0;
}
void ME_PaintContent(ME_TextEditor *editor, HDC hDC, BOOL bOnlyNew, RECT *rcUpdate) {
ME_DisplayItem *item;
ME_Context c;
int yoffset;
editor->nSequence++;
yoffset = ME_GetYScrollPos(editor);
ME_InitContext(&c, editor, hDC);
SetBkMode(hDC, TRANSPARENT);
ME_MoveCaret(editor);
item = editor->pBuffer->pFirst->next;
c.pt.y -= yoffset;
while(item != editor->pBuffer->pLast) {
int ye;
assert(item->type == diParagraph);
ye = c.pt.y + item->member.para.nHeight;
if (!bOnlyNew || (item->member.para.nFlags & MEPF_REPAINT))
{
BOOL bPaint = (rcUpdate == NULL);
if (rcUpdate)
bPaint = c.pt.y<rcUpdate->bottom &&
c.pt.y+item->member.para.nHeight>rcUpdate->top;
if (bPaint)
{
ME_DrawParagraph(&c, item);
if (!rcUpdate || (rcUpdate->top<=c.pt.y && rcUpdate->bottom>=ye))
item->member.para.nFlags &= ~MEPF_REPAINT;
}
}
c.pt.y = ye;
item = item->member.para.next_para;
}
if (c.pt.y<c.rcView.bottom) {
RECT rc;
int xs = c.rcView.left, xe = c.rcView.right;
int ys = c.pt.y, ye = c.rcView.bottom;
if (bOnlyNew)
{
int y1 = editor->nTotalLength-yoffset, y2 = editor->nLastTotalLength-yoffset;
if (y1<y2)
ys = y1, ye = y2+1;
else
ys = ye;
}
if (rcUpdate && ys!=ye)
{
xs = rcUpdate->left, xe = rcUpdate->right;
if (rcUpdate->top > ys)
ys = rcUpdate->top;
if (rcUpdate->bottom < ye)
ye = rcUpdate->bottom;
}
if (ye>ys) {
rc.left = xs;
rc.top = ys;
rc.right = xe;
rc.bottom = ye;
FillRect(hDC, &rc, c.editor->hbrBackground);
}
if (ys == c.pt.y) /* don't overwrite the top bar */
ys++;
}
if (editor->nTotalLength != editor->nLastTotalLength)
ME_SendRequestResize(editor, FALSE);
editor->nLastTotalLength = editor->nTotalLength;
ME_DestroyContext(&c);
}
