286 lines
8.3 KiB
C
286 lines
8.3 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 <stdlib.h>
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#include <X11/Xlib.h>
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#include <X11/Xatom.h>
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#include "windows.h"
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#include "dc.h"
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#include "gdi.h"
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/*#include "callback.h"*/
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#include "heap.h"
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#include "x11font.h"
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#include "stddebug.h"
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/* #define DEBUG_TEXT */
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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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/***********************************************************************
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* X11DRV_ExtTextOut
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*/
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BOOL32
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X11DRV_ExtTextOut( DC *dc, INT32 x, INT32 y, UINT32 flags,
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const RECT32 *lprect, LPCSTR str, UINT32 count,
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const INT32 *lpDx )
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{
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HRGN32 hRgnClip = 0;
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int dir, ascent, descent, i;
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fontObject* pfo;
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XCharStruct info;
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XFontStruct* font;
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RECT32 rect;
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char dfBreakChar, lfUnderline, lfStrikeOut;
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if (!DC_SetupGCForText( dc )) return TRUE;
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pfo = XFONT_GetFontObject( dc->u.x.font );
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font = pfo->fs;
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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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dprintf_text(stddeb,"ExtTextOut: hdc=%04x df=%04x %d,%d '%.*s', %d flags=%d\n",
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dc->hSelf, (UINT16)(dc->u.x.font), x, y, (int)count, str, count, flags);
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if (lprect != NULL) dprintf_text(stddeb, "\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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SIZE32 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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dprintf_text(stddeb,"\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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XSetForeground( display, dc->u.x.gc, dc->w.backgroundPixel );
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XFillRectangle( display, dc->u.x.drawable, dc->u.x.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 = info.width = 0; i < count; i++) info.width += lpDx[i];
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info.width = (info.width * dc->vportExtX + extra ) / dc->wndExtX;
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}
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else
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{
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XTextExtents( font, str, count, &dir, &ascent, &descent, &info );
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info.width += count*dc->w.charExtra + dc->w.breakExtra*dc->w.breakCount;
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}
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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 + info.width );
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break;
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case TA_RIGHT:
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x -= info.width;
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if (dc->w.textAlign & TA_UPDATECP) dc->w.CursPosX = XDPTOLP( dc, x );
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break;
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case TA_CENTER:
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x -= info.width / 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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y += font->ascent;
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break;
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case TA_BOTTOM:
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y -= font->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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hRgnClip = dc->w.hClipRgn;
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CLIPPING_IntersectClipRect( dc, rect.left, rect.top, rect.right,
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rect.bottom, CLIP_INTERSECT|CLIP_KEEPRGN );
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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 + info.width >= rect.right) ||
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(y-font->ascent < rect.top) ||
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(y+font->descent >= rect.bottom))
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{
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XSetForeground( display, dc->u.x.gc, dc->w.backgroundPixel );
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XFillRectangle( display, dc->u.x.drawable, dc->u.x.gc,
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dc->w.DCOrgX + x,
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dc->w.DCOrgY + y - font->ascent,
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info.width,
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font->ascent + font->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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XSetForeground( display, dc->u.x.gc, dc->w.textPixel );
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if (!dc->w.charExtra && !dc->w.breakExtra && !lpDx)
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{
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XDrawString( display, dc->u.x.drawable, dc->u.x.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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- XTextWidth( 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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XDrawText( display, dc->u.x.drawable, dc->u.x.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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/* 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 (!XGetFontProperty( font, XA_UNDERLINE_POSITION, &linePos ))
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linePos = font->descent-1;
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if (!XGetFontProperty( 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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XSetLineAttributes( display, dc->u.x.gc, lineWidth,
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LineSolid, CapRound, JoinBevel );
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XDrawLine( display, dc->u.x.drawable, dc->u.x.gc,
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dc->w.DCOrgX + x, dc->w.DCOrgY + y + linePos,
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dc->w.DCOrgX + x + info.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 (!XGetFontProperty( font, XA_STRIKEOUT_ASCENT, &lineAscent ))
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lineAscent = font->ascent / 2;
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if (!XGetFontProperty( font, XA_STRIKEOUT_DESCENT, &lineDescent ))
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lineDescent = -lineAscent * 2 / 3;
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XSetLineAttributes( display, dc->u.x.gc, lineAscent + lineDescent,
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LineSolid, CapRound, JoinBevel );
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XDrawLine( display, dc->u.x.drawable, dc->u.x.gc,
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dc->w.DCOrgX + x, dc->w.DCOrgY + y - lineAscent,
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dc->w.DCOrgX + x + info.width, dc->w.DCOrgY + y - lineAscent );
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}
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if (flags & ETO_CLIPPED)
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{
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SelectClipRgn32( dc->hSelf, hRgnClip );
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DeleteObject32( hRgnClip );
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}
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return TRUE;
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}
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