dlls/gdi32/dibdrv/graphics.c

   1 /*
   2  * DIB driver graphics operations.
   3  *
   4  * Copyright 2011 Huw Davies
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "gdi_private.h"
  22 #include "dibdrv.h"
  23
  24 #include "wine/debug.h"
  25
  26 WINE_DEFAULT_DEBUG_CHANNEL(dib);
  27
  28 static RECT get_device_rect( HDC hdc, int left, int top, int right, int bottom, BOOL rtl_correction )
  29 {
  30     RECT rect;
  31
  32     rect.left   = left;
  33     rect.top    = top;
  34     rect.right  = right;
  35     rect.bottom = bottom;
  36     if (rtl_correction && GetLayout( hdc ) & LAYOUT_RTL)
  37     {
  38         /* shift the rectangle so that the right border is included after mirroring */
  39         /* it would be more correct to do this after LPtoDP but that's not what Windows does */
  40         rect.left--;
  41         rect.right--;
  42     }
  43     LPtoDP( hdc, (POINT *)&rect, 2 );
  44     if (rect.left > rect.right)
  45     {
  46         int tmp = rect.left;
  47         rect.left = rect.right;
  48         rect.right = tmp;
  49     }
  50     if (rect.top > rect.bottom)
  51     {
  52         int tmp = rect.top;
  53         rect.top = rect.bottom;
  54         rect.bottom = tmp;
  55     }
  56     return rect;
  57 }
  58
  59 /***********************************************************************
  60  *           dibdrv_LineTo
  61  */
  62 BOOL dibdrv_LineTo( PHYSDEV dev, INT x, INT y )
  63 {
  64     PHYSDEV next = GET_NEXT_PHYSDEV( dev, pLineTo );
  65     dibdrv_physdev *pdev = get_dibdrv_pdev(dev);
  66     POINT pts[2];
  67
  68     GetCurrentPositionEx(dev->hdc, pts);
  69     pts[1].x = x;
  70     pts[1].y = y;
  71
  72     LPtoDP(dev->hdc, pts, 2);
  73
  74     reset_dash_origin(pdev);
  75
  76     if(defer_pen(pdev) || !pdev->pen_lines(pdev, 2, pts))
  77         return next->funcs->pLineTo( next, x, y );
  78
  79     return TRUE;
  80 }
  81
  82 /***********************************************************************
  83  *           get_rop2_from_rop
  84  *
  85  * Returns the binary rop that is equivalent to the provided ternary rop
  86  * if the src bits are ignored.
  87  */
  88 static inline INT get_rop2_from_rop(INT rop)
  89 {
  90     return (((rop >> 18) & 0x0c) | ((rop >> 16) & 0x03)) + 1;
  91 }
  92
  93 /***********************************************************************
  94  *           dibdrv_PatBlt
  95  */
  96 BOOL dibdrv_PatBlt( PHYSDEV dev, struct bitblt_coords *dst, DWORD rop )
  97 {
  98     PHYSDEV next = GET_NEXT_PHYSDEV( dev, pPatBlt );
  99     dibdrv_physdev *pdev = get_dibdrv_pdev(dev);
 100     INT rop2 = get_rop2_from_rop(rop);
 101     BOOL done;
 102
 103     TRACE("(%p, %d, %d, %d, %d, %06x)\n", dev, dst->x, dst->y, dst->width, dst->height, rop);
 104
 105     if(defer_brush(pdev))
 106         return next->funcs->pPatBlt( next, dst, rop );
 107
 108     update_brush_rop( pdev, rop2 );
 109
 110     done = brush_rects( pdev, 1, &dst->visrect );
 111
 112     update_brush_rop( pdev, GetROP2(dev->hdc) );
 113
 114     if(!done)
 115         return next->funcs->pPatBlt( next, dst, rop );
 116
 117     return TRUE;
 118 }
 119
 120 /***********************************************************************
 121  *           dibdrv_PaintRgn
 122  */
 123 BOOL dibdrv_PaintRgn( PHYSDEV dev, HRGN rgn )
 124 {
 125     PHYSDEV next = GET_NEXT_PHYSDEV( dev, pPaintRgn );
 126     dibdrv_physdev *pdev = get_dibdrv_pdev(dev);
 127     const WINEREGION *region;
 128     int i;
 129     RECT rect;
 130
 131     TRACE("%p, %p\n", dev, rgn);
 132
 133     if(defer_brush(pdev)) return next->funcs->pPaintRgn( next, rgn );
 134
 135     region = get_wine_region( rgn );
 136     if(!region) return FALSE;
 137
 138     for(i = 0; i < region->numRects; i++)
 139     {
 140         rect = get_device_rect( dev->hdc, region->rects[i].left, region->rects[i].top,
 141                                 region->rects[i].right, region->rects[i].bottom, FALSE );
 142         brush_rects( pdev, 1, &rect );
 143     }
 144
 145     release_wine_region( rgn );
 146     return TRUE;
 147 }
 148
 149 /***********************************************************************
 150  *           dibdrv_PolyPolyline
 151  */
 152 BOOL dibdrv_PolyPolyline( PHYSDEV dev, const POINT* pt, const DWORD* counts, DWORD polylines )
 153 {
 154     dibdrv_physdev *pdev = get_dibdrv_pdev(dev);
 155     PHYSDEV next = GET_NEXT_PHYSDEV( dev, pPolyPolyline );
 156     DWORD max_points = 0, i;
 157     POINT *points;
 158
 159     if (defer_pen( pdev )) return next->funcs->pPolyPolyline( next, pt, counts, polylines );
 160
 161     for (i = 0; i < polylines; i++) max_points = max( counts[i], max_points );
 162
 163     points = HeapAlloc( GetProcessHeap(), 0, max_points * sizeof(*pt) );
 164     if (!points) return FALSE;
 165
 166     for (i = 0; i < polylines; i++)
 167     {
 168         memcpy( points, pt, counts[i] * sizeof(*pt) );
 169         pt += counts[i];
 170         LPtoDP( dev->hdc, points, counts[i] );
 171
 172         reset_dash_origin( pdev );
 173         pdev->pen_lines( pdev, counts[i], points );
 174     }
 175
 176     HeapFree( GetProcessHeap(), 0, points );
 177     return TRUE;
 178 }
 179
 180 /***********************************************************************
 181  *           dibdrv_Polyline
 182  */
 183 BOOL dibdrv_Polyline( PHYSDEV dev, const POINT* pt, INT count )
 184 {
 185     dibdrv_physdev *pdev = get_dibdrv_pdev(dev);
 186     PHYSDEV next = GET_NEXT_PHYSDEV( dev, pPolyline );
 187     POINT *points;
 188
 189     if (defer_pen( pdev )) return next->funcs->pPolyline( next, pt, count );
 190
 191     points = HeapAlloc( GetProcessHeap(), 0, count * sizeof(*pt) );
 192     if (!points) return FALSE;
 193
 194     memcpy( points, pt, count * sizeof(*pt) );
 195     LPtoDP( dev->hdc, points, count );
 196
 197     reset_dash_origin( pdev );
 198     pdev->pen_lines( pdev, count, points );
 199
 200     HeapFree( GetProcessHeap(), 0, points );
 201     return TRUE;
 202 }
 203
 204 /***********************************************************************
 205  *           dibdrv_Rectangle
 206  */
 207 BOOL dibdrv_Rectangle( PHYSDEV dev, INT left, INT top, INT right, INT bottom )
 208 {
 209     PHYSDEV next = GET_NEXT_PHYSDEV( dev, pRectangle );
 210     dibdrv_physdev *pdev = get_dibdrv_pdev(dev);
 211     RECT rect = get_device_rect( dev->hdc, left, top, right, bottom, TRUE );
 212     POINT pts[5];
 213
 214     TRACE("(%p, %d, %d, %d, %d)\n", dev, left, top, right, bottom);
 215
 216     if(rect.left == rect.right || rect.top == rect.bottom) return TRUE;
 217
 218     if(defer_pen(pdev) || defer_brush(pdev))
 219         return next->funcs->pRectangle( next, left, top, right, bottom );
 220
 221     reset_dash_origin(pdev);
 222
 223     /* 4 pts going anti-clockwise starting from top-right */
 224     pts[0].x = pts[3].x = rect.right - 1;
 225     pts[0].y = pts[1].y = rect.top;
 226     pts[1].x = pts[2].x = rect.left;
 227     pts[2].y = pts[3].y = rect.bottom - 1;
 228     pts[4] = pts[0];
 229
 230     pdev->pen_lines(pdev, 5, pts);
 231
 232     /* FIXME: Will need updating when we support wide pens */
 233
 234     rect.left   += 1;
 235     rect.top    += 1;
 236     rect.right  -= 1;
 237     rect.bottom -= 1;
 238
 239     brush_rects(pdev, 1, &rect);
 240
 241     return TRUE;
 242 }