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354 lines
10 KiB
C
354 lines
10 KiB
C
/*
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* X11 graphics driver text functions
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*
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* Copyright 1993,1994 Alexandre Julliard
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*/
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#include "config.h"
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#ifndef X_DISPLAY_MISSING
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#include <X11/Xatom.h>
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#include "ts_xlib.h"
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#include <stdlib.h>
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#include "wintypes.h"
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#include <math.h>
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#include "dc.h"
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#include "gdi.h"
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#include "heap.h"
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#include "x11font.h"
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#include "debug.h"
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#define SWAP_INT(a,b) { int t = a; a = b; b = t; }
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#define IROUND(x) (int)((x)>0? (x)+0.5 : (x) - 0.5)
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/***********************************************************************
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* X11DRV_ExtTextOut
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*/
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BOOL
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X11DRV_ExtTextOut( DC *dc, INT x, INT y, UINT flags,
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const RECT *lprect, LPCSTR str, UINT count,
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const INT *lpDx )
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{
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int i;
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fontObject* pfo;
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INT width, ascent, descent, xwidth, ywidth;
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XFontStruct* font;
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RECT rect;
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char dfBreakChar, lfUnderline, lfStrikeOut;
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BOOL rotated = FALSE;
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X11DRV_PDEVICE *physDev = (X11DRV_PDEVICE *)dc->physDev;
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if (!X11DRV_SetupGCForText( dc )) return TRUE;
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pfo = XFONT_GetFontObject( physDev->font );
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font = pfo->fs;
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if (pfo->lf.lfEscapement && pfo->lpX11Trans)
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rotated = TRUE;
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dfBreakChar = (char)pfo->fi->df.dfBreakChar;
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lfUnderline = (pfo->fo_flags & FO_SYNTH_UNDERLINE) ? 1 : 0;
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lfStrikeOut = (pfo->fo_flags & FO_SYNTH_STRIKEOUT) ? 1 : 0;
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TRACE(text,"hdc=%04x df=%04x %d,%d %s, %d flags=%d lpDx=%p\n",
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dc->hSelf, (UINT16)(physDev->font), x, y,
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debugstr_an (str, count), count, flags, lpDx);
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/* some strings sent here end in a newline for whatever reason. I have no
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clue what the right treatment should be in general, but ignoring
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terminating newlines seems ok. MW, April 1998. */
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if (count > 0 && str[count - 1] == '\n') count--;
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if (lprect != NULL) TRACE(text, "\trect=(%d,%d - %d,%d)\n",
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lprect->left, lprect->top,
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lprect->right, lprect->bottom );
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/* Setup coordinates */
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if (dc->w.textAlign & TA_UPDATECP)
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{
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x = dc->w.CursPosX;
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y = dc->w.CursPosY;
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}
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if (flags & (ETO_OPAQUE | ETO_CLIPPED)) /* there's a rectangle */
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{
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if (!lprect) /* not always */
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{
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SIZE sz;
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if (flags & ETO_CLIPPED) /* Can't clip with no rectangle */
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return FALSE;
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if (!X11DRV_GetTextExtentPoint( dc, str, count, &sz ))
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return FALSE;
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rect.left = XLPTODP( dc, x );
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rect.right = XLPTODP( dc, x+sz.cx );
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rect.top = YLPTODP( dc, y );
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rect.bottom = YLPTODP( dc, y+sz.cy );
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}
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else
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{
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rect.left = XLPTODP( dc, lprect->left );
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rect.right = XLPTODP( dc, lprect->right );
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rect.top = YLPTODP( dc, lprect->top );
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rect.bottom = YLPTODP( dc, lprect->bottom );
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}
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if (rect.right < rect.left) SWAP_INT( rect.left, rect.right );
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if (rect.bottom < rect.top) SWAP_INT( rect.top, rect.bottom );
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}
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x = XLPTODP( dc, x );
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y = YLPTODP( dc, y );
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TRACE(text,"\treal coord: x=%i, y=%i, rect=(%d,%d - %d,%d)\n",
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x, y, rect.left, rect.top, rect.right, rect.bottom);
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/* Draw the rectangle */
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if (flags & ETO_OPAQUE)
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{
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TSXSetForeground( display, physDev->gc, physDev->backgroundPixel );
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TSXFillRectangle( display, physDev->drawable, physDev->gc,
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dc->w.DCOrgX + rect.left, dc->w.DCOrgY + rect.top,
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rect.right-rect.left, rect.bottom-rect.top );
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}
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if (!count) return TRUE; /* Nothing more to do */
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/* Compute text starting position */
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if (lpDx) /* have explicit character cell x offsets in logical coordinates */
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{
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int extra = dc->wndExtX / 2;
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for (i = width = 0; i < count; i++) width += lpDx[i];
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width = (width * dc->vportExtX + extra ) / dc->wndExtX;
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}
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else
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{
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SIZE sz;
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if (!X11DRV_GetTextExtentPoint( dc, str, count, &sz ))
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return FALSE;
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width = XLSTODS(dc, sz.cx);
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}
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ascent = pfo->lpX11Trans ? pfo->lpX11Trans->ascent : font->ascent;
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descent = pfo->lpX11Trans ? pfo->lpX11Trans->descent : font->descent;
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xwidth = pfo->lpX11Trans ? width * pfo->lpX11Trans->a /
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pfo->lpX11Trans->pixelsize : width;
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ywidth = pfo->lpX11Trans ? width * pfo->lpX11Trans->b /
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pfo->lpX11Trans->pixelsize : 0;
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switch( dc->w.textAlign & (TA_LEFT | TA_RIGHT | TA_CENTER) )
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{
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case TA_LEFT:
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if (dc->w.textAlign & TA_UPDATECP) {
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dc->w.CursPosX = XDPTOLP( dc, x + xwidth );
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dc->w.CursPosY = YDPTOLP( dc, y - ywidth );
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}
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break;
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case TA_RIGHT:
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x -= xwidth;
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y += ywidth;
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if (dc->w.textAlign & TA_UPDATECP) {
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dc->w.CursPosX = XDPTOLP( dc, x );
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dc->w.CursPosY = YDPTOLP( dc, y );
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}
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break;
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case TA_CENTER:
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x -= xwidth / 2;
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y += ywidth / 2;
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break;
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}
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switch( dc->w.textAlign & (TA_TOP | TA_BOTTOM | TA_BASELINE) )
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{
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case TA_TOP:
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x -= pfo->lpX11Trans ? ascent * pfo->lpX11Trans->c /
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pfo->lpX11Trans->pixelsize : 0;
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y += pfo->lpX11Trans ? ascent * pfo->lpX11Trans->d /
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pfo->lpX11Trans->pixelsize : ascent;
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break;
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case TA_BOTTOM:
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x += pfo->lpX11Trans ? descent * pfo->lpX11Trans->c /
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pfo->lpX11Trans->pixelsize : 0;
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y -= pfo->lpX11Trans ? descent * pfo->lpX11Trans->d /
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pfo->lpX11Trans->pixelsize : descent;
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break;
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case TA_BASELINE:
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break;
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}
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/* Set the clip region */
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if (flags & ETO_CLIPPED)
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{
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SaveVisRgn16( dc->hSelf );
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CLIPPING_IntersectVisRect( dc, rect.left, rect.top, rect.right,
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rect.bottom, FALSE );
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}
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/* Draw the text background if necessary */
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if (dc->w.backgroundMode != TRANSPARENT)
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{
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/* If rectangle is opaque and clipped, do nothing */
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if (!(flags & ETO_CLIPPED) || !(flags & ETO_OPAQUE))
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{
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/* Only draw if rectangle is not opaque or if some */
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/* text is outside the rectangle */
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if (!(flags & ETO_OPAQUE) ||
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(x < rect.left) ||
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(x + width >= rect.right) ||
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(y - ascent < rect.top) ||
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(y + descent >= rect.bottom))
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{
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TSXSetForeground( display, physDev->gc,
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physDev->backgroundPixel );
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TSXFillRectangle( display, physDev->drawable, physDev->gc,
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dc->w.DCOrgX + x,
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dc->w.DCOrgY + y - ascent,
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width,
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ascent + descent );
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}
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}
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}
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/* Draw the text (count > 0 verified) */
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TSXSetForeground( display, physDev->gc, physDev->textPixel );
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if(!rotated)
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{
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if (!dc->w.charExtra && !dc->w.breakExtra && !lpDx)
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{
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TSXDrawString( display, physDev->drawable, physDev->gc,
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dc->w.DCOrgX + x, dc->w.DCOrgY + y, str, count );
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}
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else /* Now the fun begins... */
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{
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XTextItem *items, *pitem;
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int delta;
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/* allocate max items */
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pitem = items = HEAP_xalloc( GetProcessHeap(), 0,
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count * sizeof(XTextItem) );
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delta = i = 0;
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if( lpDx ) /* explicit character widths */
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{
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int extra = dc->wndExtX / 2;
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while (i < count)
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{
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/* initialize text item with accumulated delta */
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pitem->chars = (char *)str + i;
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pitem->delta = delta;
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pitem->nchars = 0;
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pitem->font = None;
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delta = 0;
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/* add characters to the same XTextItem until new delta
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* becomes non-zero */
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do
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{
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delta += (lpDx[i] * dc->vportExtX + extra) / dc->wndExtX
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- TSXTextWidth( font, str + i, 1);
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pitem->nchars++;
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} while ((++i < count) && !delta);
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pitem++;
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}
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}
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else /* charExtra or breakExtra */
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{
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while (i < count)
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{
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pitem->chars = (char *)str + i;
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pitem->delta = delta;
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pitem->nchars = 0;
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pitem->font = None;
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delta = 0;
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do
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{
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delta += dc->w.charExtra;
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if (str[i] == (char)dfBreakChar) delta += dc->w.breakExtra;
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pitem->nchars++;
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} while ((++i < count) && !delta);
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pitem++;
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}
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}
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TSXDrawText( display, physDev->drawable, physDev->gc,
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dc->w.DCOrgX + x, dc->w.DCOrgY + y, items, pitem - items );
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HeapFree( GetProcessHeap(), 0, items );
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}
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}
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else /* rotated */
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{
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/* have to render character by character. */
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double offset = 0.0;
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int i;
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for (i=0; i<count; i++)
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{
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int char_metric_offset = (unsigned char) str[i]
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- font->min_char_or_byte2;
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int x_i = IROUND((double) (dc->w.DCOrgX + x) + offset *
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pfo->lpX11Trans->a / pfo->lpX11Trans->pixelsize );
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int y_i = IROUND((double) (dc->w.DCOrgY + y) - offset *
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pfo->lpX11Trans->b / pfo->lpX11Trans->pixelsize );
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TSXDrawString( display, physDev->drawable, physDev->gc,
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x_i, y_i, &str[i], 1);
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if (lpDx)
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offset += XLSTODS(dc, lpDx[i]);
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else
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{
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offset += (double) (font->per_char ?
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font->per_char[char_metric_offset].attributes:
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font->min_bounds.attributes)
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* pfo->lpX11Trans->pixelsize / 1000.0;
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offset += dc->w.charExtra;
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if (str[i] == (char)dfBreakChar)
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offset += dc->w.breakExtra;
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}
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}
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}
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/* Draw underline and strike-out if needed */
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if (lfUnderline)
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{
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long linePos, lineWidth;
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if (!TSXGetFontProperty( font, XA_UNDERLINE_POSITION, &linePos ))
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linePos = descent - 1;
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if (!TSXGetFontProperty( font, XA_UNDERLINE_THICKNESS, &lineWidth ))
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lineWidth = 0;
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else if (lineWidth == 1) lineWidth = 0;
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TSXSetLineAttributes( display, physDev->gc, lineWidth,
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LineSolid, CapRound, JoinBevel );
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TSXDrawLine( display, physDev->drawable, physDev->gc,
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dc->w.DCOrgX + x, dc->w.DCOrgY + y + linePos,
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dc->w.DCOrgX + x + width, dc->w.DCOrgY + y + linePos );
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}
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if (lfStrikeOut)
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{
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long lineAscent, lineDescent;
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if (!TSXGetFontProperty( font, XA_STRIKEOUT_ASCENT, &lineAscent ))
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lineAscent = ascent / 2;
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if (!TSXGetFontProperty( font, XA_STRIKEOUT_DESCENT, &lineDescent ))
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lineDescent = -lineAscent * 2 / 3;
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TSXSetLineAttributes( display, physDev->gc, lineAscent + lineDescent,
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LineSolid, CapRound, JoinBevel );
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TSXDrawLine( display, physDev->drawable, physDev->gc,
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dc->w.DCOrgX + x, dc->w.DCOrgY + y - lineAscent,
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dc->w.DCOrgX + x + width, dc->w.DCOrgY + y - lineAscent );
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}
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if (flags & ETO_CLIPPED)
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RestoreVisRgn16( dc->hSelf );
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return TRUE;
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}
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#endif /* !defined(X_DISPLAY_MISSING) */
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