Sweden-Number/dlls/riched20/paint.c

530 lines
16 KiB
C

/*
* RichEdit - painting functions
*
* Copyright 2004 by Krzysztof Foltman
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "editor.h"
WINE_DEFAULT_DEBUG_CHANNEL(richedit);
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) {
HBRUSH hbr;
hbr = CreateSolidBrush(ME_GetBackColor(c.editor));
rc.left = xs;
rc.top = ys;
rc.right = xe;
rc.bottom = ye;
FillRect(hDC, &rc, hbr);
DeleteObject(hbr);
}
if (ys == c.pt.y) /* don't overwrite the top bar */
ys++;
}
editor->nLastTotalLength = editor->nTotalLength;
ME_DestroyContext(&c);
}
static void ME_MarkParagraphRange(ME_TextEditor *editor, ME_DisplayItem *p1,
ME_DisplayItem *p2, int nFlags)
{
ME_DisplayItem *p3;
if (p1 == p2)
{
p1->member.para.nFlags |= nFlags;
return;
}
if (p1->member.para.nCharOfs > p2->member.para.nCharOfs)
p3 = p1, p1 = p2, p2 = p3;
p1->member.para.nFlags |= nFlags;
do {
p1 = p1->member.para.next_para;
p1->member.para.nFlags |= nFlags;
} while (p1 != p2);
}
static void ME_MarkOffsetRange(ME_TextEditor *editor, int from, int to, int nFlags)
{
ME_Cursor c1, c2;
ME_CursorFromCharOfs(editor, from, &c1);
ME_CursorFromCharOfs(editor, to, &c2);
ME_MarkParagraphRange(editor, ME_GetParagraph(c1.pRun), ME_GetParagraph(c2.pRun), nFlags);
}
static void ME_MarkSelectionForRepaint(ME_TextEditor *editor)
{
int from, to, from2, to2, end;
end = ME_GetTextLength(editor);
ME_GetSelection(editor, &from, &to);
from2 = editor->nLastSelStart;
to2 = editor->nLastSelEnd;
if (from<from2) ME_MarkOffsetRange(editor, from, from2, MEPF_REPAINT);
if (from>from2) ME_MarkOffsetRange(editor, from2, from, MEPF_REPAINT);
if (to<to2) ME_MarkOffsetRange(editor, to, to2, MEPF_REPAINT);
if (to>to2) ME_MarkOffsetRange(editor, to2, to, MEPF_REPAINT);
editor->nLastSelStart = from;
editor->nLastSelEnd = to;
}
void ME_Repaint(ME_TextEditor *editor)
{
ME_Cursor *pCursor = &editor->pCursors[0];
ME_DisplayItem *pRun = NULL;
int nOffset = -1;
HDC hDC;
int nCharOfs = ME_CharOfsFromRunOfs(editor, pCursor->pRun, pCursor->nOffset);
ME_RunOfsFromCharOfs(editor, nCharOfs, &pRun, &nOffset);
assert(pRun == pCursor->pRun);
assert(nOffset == pCursor->nOffset);
ME_MarkSelectionForRepaint(editor);
if (ME_WrapMarkedParagraphs(editor)) {
ME_UpdateScrollBar(editor);
}
hDC = GetDC(editor->hWnd);
ME_HideCaret(editor);
ME_PaintContent(editor, hDC, TRUE, NULL);
ReleaseDC(editor->hWnd, hDC);
ME_ShowCaret(editor);
ME_EnsureVisible(editor, pCursor->pRun);
}
void ME_UpdateRepaint(ME_TextEditor *editor)
{
/*
InvalidateRect(editor->hWnd, NULL, TRUE);
*/
ME_SendOldNotify(editor, EN_CHANGE);
ME_Repaint(editor);
ME_SendOldNotify(editor, EN_UPDATE);
ME_SendSelChange(editor);
}
void
ME_RewrapRepaint(ME_TextEditor *editor)
{
ME_MarkAllForWrapping(editor);
ME_WrapMarkedParagraphs(editor);
ME_UpdateScrollBar(editor);
ME_Repaint(editor);
}
static void ME_DrawTextWithStyle(ME_Context *c, int x, int y, LPCWSTR szText, int nChars,
ME_Style *s, int *width, int nSelFrom, int nSelTo, int ymin, int cy) {
HDC hDC = c->hDC;
HGDIOBJ hOldFont;
COLORREF rgbOld, rgbBack;
int yOffset = 0, yTwipsOffset = 0;
hOldFont = ME_SelectStyleFont(c->editor, hDC, s);
rgbBack = ME_GetBackColor(c->editor);
if ((s->fmt.dwMask & CFM_COLOR) && (s->fmt.dwEffects & CFE_AUTOCOLOR))
rgbOld = SetTextColor(hDC, GetSysColor(COLOR_WINDOWTEXT));
else
rgbOld = SetTextColor(hDC, s->fmt.crTextColor);
if ((s->fmt.dwMask & s->fmt.dwEffects) & CFM_OFFSET) {
yTwipsOffset = s->fmt.yOffset;
}
if ((s->fmt.dwMask & s->fmt.dwEffects) & (CFM_SUPERSCRIPT | CFM_SUBSCRIPT)) {
if (s->fmt.dwEffects & CFE_SUPERSCRIPT) yTwipsOffset = s->fmt.yHeight/3;
if (s->fmt.dwEffects & CFE_SUBSCRIPT) yTwipsOffset = -s->fmt.yHeight/12;
}
if (yTwipsOffset)
{
int numerator = 1;
int denominator = 1;
if (c->editor->nZoomNumerator)
{
numerator = c->editor->nZoomNumerator;
denominator = c->editor->nZoomDenominator;
}
yOffset = yTwipsOffset * GetDeviceCaps(hDC, LOGPIXELSY) * numerator / denominator / 1440;
}
ExtTextOutW(hDC, x, y-yOffset, 0, NULL, szText, nChars, NULL);
if (width) {
SIZE sz;
GetTextExtentPoint32W(hDC, szText, nChars, &sz);
*width = sz.cx;
}
if (nSelFrom < nChars && nSelTo >= 0 && nSelFrom<nSelTo)
{
SIZE sz;
if (nSelFrom < 0) nSelFrom = 0;
if (nSelTo > nChars) nSelTo = nChars;
GetTextExtentPoint32W(hDC, szText, nSelFrom, &sz);
x += sz.cx;
GetTextExtentPoint32W(hDC, szText+nSelFrom, nSelTo-nSelFrom, &sz);
PatBlt(hDC, x, ymin, sz.cx, cy, DSTINVERT);
}
SetTextColor(hDC, rgbOld);
ME_UnselectStyleFont(c->editor, hDC, s, hOldFont);
}
static void ME_DebugWrite(HDC hDC, POINT *pt, WCHAR *szText) {
int align = SetTextAlign(hDC, TA_LEFT|TA_TOP);
HGDIOBJ hFont = SelectObject(hDC, GetStockObject(DEFAULT_GUI_FONT));
COLORREF color = SetTextColor(hDC, RGB(128,128,128));
TextOutW(hDC, pt->x, pt->y, szText, lstrlenW(szText));
SelectObject(hDC, hFont);
SetTextAlign(hDC, align);
SetTextColor(hDC, color);
}
void ME_DrawGraphics(ME_Context *c, int x, int y, ME_Run *run,
ME_Paragraph *para, BOOL selected) {
SIZE sz;
int xs, ys, xe, ye, h, ym, width, eyes;
ME_GetGraphicsSize(c->editor, run, &sz);
xs = run->pt.x;
ys = y-sz.cy;
xe = xs+sz.cx;
ye = y;
h = ye-ys;
ym = ys+h/4;
width = sz.cx;
eyes = width/8;
/* draw a smiling face :) */
Ellipse(c->hDC, xs, ys, xe, ye);
Ellipse(c->hDC, xs+width/8, ym, x+width/8+eyes, ym+eyes);
Ellipse(c->hDC, xs+7*width/8-eyes, ym, xs+7*width/8, ym+eyes);
MoveToEx(c->hDC, xs+width/8, ys+3*h/4-eyes, NULL);
LineTo(c->hDC, xs+width/8, ys+3*h/4);
LineTo(c->hDC, xs+7*width/8, ys+3*h/4);
LineTo(c->hDC, xs+7*width/8, ys+3*h/4-eyes);
if (selected)
{
/* descent is usually (always?) 0 for graphics */
PatBlt(c->hDC, x, y-run->nAscent, sz.cx, run->nAscent+run->nDescent, DSTINVERT);
}
}
static void ME_DrawRun(ME_Context *c, int x, int y, ME_DisplayItem *rundi, ME_Paragraph *para) {
ME_Run *run = &rundi->member.run;
int runofs = run->nCharOfs+para->nCharOfs;
/* you can always comment it out if you need visible paragraph marks */
if (run->nFlags & (MERF_ENDPARA|MERF_TAB))
return;
if (run->nFlags & MERF_GRAPHICS) {
int blfrom, blto;
ME_GetSelection(c->editor, &blfrom, &blto);
ME_DrawGraphics(c, x, y, run, para, (runofs >= blfrom) && (runofs < blto));
} else
{
int blfrom, blto;
ME_DisplayItem *start = ME_FindItemBack(rundi, diStartRow);
ME_GetSelection(c->editor, &blfrom, &blto);
ME_DrawTextWithStyle(c, x, y,
run->strText->szData, ME_StrVLen(run->strText), run->style, NULL,
blfrom-runofs, blto-runofs, c->pt.y+start->member.row.nYPos, start->member.row.nHeight);
}
}
COLORREF ME_GetBackColor(ME_TextEditor *editor)
{
/* Looks like I was seriously confused
return GetSysColor((GetWindowLong(editor->hWnd, GWL_STYLE) & ES_READONLY) ? COLOR_3DFACE: COLOR_WINDOW);
*/
if (editor->rgbBackColor == -1)
return GetSysColor(COLOR_WINDOW);
else
return editor->rgbBackColor;
}
void ME_DrawParagraph(ME_Context *c, ME_DisplayItem *paragraph) {
int align = SetTextAlign(c->hDC, TA_BASELINE);
ME_DisplayItem *p;
ME_Run *run;
ME_Paragraph *para = NULL;
RECT rc, rcPara;
int y = c->pt.y;
int height = 0, baseline = 0, no=0, pno = 0;
int xs, xe;
int visible = 0;
int nMargWidth = 0;
c->pt.x = c->rcView.left;
rcPara.left = c->rcView.left;
rcPara.right = c->rcView.right;
for (p = paragraph; p!=paragraph->member.para.next_para; p = p->next) {
switch(p->type) {
case diParagraph:
para = &p->member.para;
break;
case diStartRow:
assert(para);
nMargWidth = (pno==0?para->nFirstMargin:para->nLeftMargin);
xs = c->rcView.left+nMargWidth;
xe = c->rcView.right-para->nRightMargin;
y += height;
rcPara.top = y;
rcPara.bottom = y+p->member.row.nHeight;
visible = RectVisible(c->hDC, &rcPara);
if (visible) {
HBRUSH hbr;
hbr = CreateSolidBrush(ME_GetBackColor(c->editor));
/* left margin */
rc.left = c->rcView.left;
rc.right = c->rcView.left+nMargWidth;
rc.top = y;
rc.bottom = y+p->member.row.nHeight;
FillRect(c->hDC, &rc, hbr/* c->hbrMargin */);
/* right margin */
rc.left = xe;
rc.right = c->rcView.right;
FillRect(c->hDC, &rc, hbr/* c->hbrMargin */);
rc.left = c->rcView.left+nMargWidth;
rc.right = xe;
FillRect(c->hDC, &rc, hbr);
DeleteObject(hbr);
}
if (me_debug)
{
const WCHAR wszRowDebug[] = {'r','o','w','[','%','d',']',0};
WCHAR buf[128];
POINT pt = c->pt;
wsprintfW(buf, wszRowDebug, no);
pt.y = 12+y;
ME_DebugWrite(c->hDC, &pt, buf);
}
height = p->member.row.nHeight;
baseline = p->member.row.nBaseline;
pno++;
break;
case diRun:
assert(para);
run = &p->member.run;
if (visible && me_debug) {
rc.left = c->rcView.left+run->pt.x;
rc.right = c->rcView.left+run->pt.x+run->nWidth;
rc.top = c->pt.y+run->pt.y;
rc.bottom = c->pt.y+run->pt.y+height;
TRACE("rc = (%ld, %ld, %ld, %ld)\n", rc.left, rc.top, rc.right, rc.bottom);
if (run->nFlags & MERF_SKIPPED)
DrawFocusRect(c->hDC, &rc);
else
FrameRect(c->hDC, &rc, GetSysColorBrush(COLOR_GRAYTEXT));
}
if (visible)
ME_DrawRun(c, run->pt.x, c->pt.y+run->pt.y+baseline, p, &paragraph->member.para);
if (me_debug)
{
/* I'm using %ls, hope wsprintfW is not going to use wrong (4-byte) WCHAR version */
const WCHAR wszRunDebug[] = {'[','%','d',':','%','x',']',' ','%','l','s',0};
WCHAR buf[2560];
POINT pt;
pt.x = run->pt.x;
pt.y = c->pt.y + run->pt.y;
wsprintfW(buf, wszRunDebug, no, p->member.run.nFlags, p->member.run.strText->szData);
ME_DebugWrite(c->hDC, &pt, buf);
}
/* c->pt.x += p->member.run.nWidth; */
break;
default:
break;
}
no++;
}
SetTextAlign(c->hDC, align);
}
void ME_Scroll(ME_TextEditor *editor, int cx, int cy)
{
SCROLLINFO si;
HWND hWnd = editor->hWnd;
si.cbSize = sizeof(SCROLLINFO);
si.fMask = SIF_POS;
GetScrollInfo(hWnd, SB_VERT, &si);
si.nPos = editor->nScrollPosY -= cy;
SetScrollInfo(hWnd, SB_VERT, &si, TRUE);
if (abs(cy) > editor->sizeWindow.cy)
InvalidateRect(editor->hWnd, NULL, TRUE);
else
ScrollWindowEx(hWnd, cx, cy, NULL, NULL, NULL, NULL, SW_ERASE|SW_INVALIDATE);
}
void ME_UpdateScrollBar(ME_TextEditor *editor)
{
HWND hWnd = editor->hWnd;
SCROLLINFO si;
int nOldLen = editor->nTotalLength;
BOOL bScrollY = (editor->nTotalLength > editor->sizeWindow.cy);
BOOL bUpdateScrollBars;
si.cbSize = sizeof(si);
si.fMask = SIF_POS | SIF_RANGE;
GetScrollInfo(hWnd, SB_VERT, &si);
bUpdateScrollBars = (bScrollY || editor->bScrollY)&& ((si.nMax != nOldLen) || (si.nPage != editor->sizeWindow.cy));
if (bScrollY != editor->bScrollY)
{
si.fMask = SIF_RANGE | SIF_PAGE;
si.nMin = 0;
si.nPage = editor->sizeWindow.cy;
if (bScrollY) {
si.nMax = editor->nTotalLength;
} else {
si.nMax = 0;
}
SetScrollInfo(hWnd, SB_VERT, &si, FALSE);
ME_MarkAllForWrapping(editor);
editor->bScrollY = bScrollY;
ME_WrapMarkedParagraphs(editor);
bUpdateScrollBars = TRUE;
}
if (bUpdateScrollBars) {
int nScroll = 0;
si.fMask = SIF_PAGE | SIF_RANGE | SIF_POS;
if (editor->nTotalLength > editor->sizeWindow.cy) {
si.nMax = editor->nTotalLength;
si.nPage = editor->sizeWindow.cy;
if (si.nPos > si.nMax-si.nPage) {
nScroll = (si.nMax-si.nPage)-si.nPos;
si.nPos = si.nMax-si.nPage;
}
}
else {
si.nMax = 0;
si.nPage = 0;
si.nPos = 0;
}
TRACE("min=%d max=%d page=%d pos=%d shift=%d\n", si.nMin, si.nMax, si.nPage, si.nPos, nScroll);
editor->nScrollPosY = si.nPos;
SetScrollInfo(hWnd, SB_VERT, &si, TRUE);
if (nScroll)
ScrollWindow(hWnd, 0, -nScroll, NULL, NULL);
}
}
int ME_GetYScrollPos(ME_TextEditor *editor)
{
return editor->nScrollPosY;
}
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);
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);
ScrollWindow(hWnd, 0, -(newy-yold), NULL, NULL);
UpdateWindow(hWnd);
}
}
BOOL
ME_SetZoom(ME_TextEditor *editor, int numerator, int denominator)
{
/* TODO: Zoom images and objects */
if (numerator != 0)
{
if (denominator == 0)
return FALSE;
if (1.0 / 64.0 > (float)numerator / (float)denominator
|| (float)numerator / (float)denominator > 64.0)
return FALSE;
}
editor->nZoomNumerator = numerator;
editor->nZoomDenominator = denominator;
ME_RewrapRepaint(editor);
return TRUE;
}