rom/intuition/scrollwindowraster.c

   1 /*
   2     Copyright © 1995-2011, The AROS Development Team. All rights reserved.
   3     Copyright © 2001-2003, The MorphOS Development Team. All Rights Reserved.
   4     $Id$
   5 */
   6
   7 #include <intuition/gadgetclass.h>
   8 #include <proto/graphics.h>
   9 #include <proto/layers.h>
  10 #include <stdlib.h>
  11 #include "intuition_intern.h"
  12 #include "inputhandler.h"
  13 #include "inputhandler_actions.h"
  14 #include "inputhandler_support.h"
  15
  16 #ifdef __MORPHOS__
  17 #   include "mosmisc.h"
  18 #endif
  19
  20 struct ScrollWindowRasterMsg
  21 {
  22     struct IntuiActionMsg    msg;
  23     struct Window           *window;
  24 };
  25
  26 static VOID int_scrollwindowraster(struct ScrollWindowRasterMsg *msg,
  27                                    struct IntuitionBase *IntuitionBase);
  28
  29 /*****************************************************************************
  30
  31     NAME */
  32 #include <proto/intuition.h>
  33
  34     AROS_LH7(void, ScrollWindowRaster,
  35
  36 /*  SYNOPSIS */
  37          AROS_LHA(struct Window *, win , A1),
  38          AROS_LHA(WORD           , dx  , D0),
  39          AROS_LHA(WORD           , dy  , D1),
  40          AROS_LHA(WORD           , xmin, D2),
  41          AROS_LHA(WORD           , ymin, D3),
  42          AROS_LHA(WORD           , xmax, D4),
  43          AROS_LHA(WORD           , ymax, D5),
  44
  45 /*  LOCATION */
  46          struct IntuitionBase *, IntuitionBase, 133, Intuition)
  47
  48 /*  FUNCTION
  49         Scrolls the content of the rectangle defined by (xmin,ymin)-
  50         (xmax,ymax) by (dx,dy) towards (0,0). This function calls
  51         ScrollRasterBF().
  52         The advantage of this function over calling ScrollRasterBF() is
  53         that the window will be informed about damages. A damage happens
  54         if in a simple window parts from concelealed areas are scrolled
  55         to visible areas. The visible areas will be blank as simple
  56         windows store no data for concealed areas.
  57         The blank parts that appear due to the scroll will be filled
  58         with EraseRect() and are not considered damaged areas.
  59
  60     INPUTS
  61         win       - pointer to window in which to scroll
  62         dx,dy     - scroll by (dx,dy) towards (0,0)
  63         xmin,ymin - upper left corner of the rectangle that will be
  64                     affected by the scroll
  65         xmax,ymax - lower rigfht corner of the rectangle that will be
  66                     affected by the scroll
  67
  68     RESULT
  69
  70     NOTES
  71
  72     EXAMPLE
  73
  74     BUGS
  75
  76     SEE ALSO
  77
  78     INTERNALS
  79
  80 *****************************************************************************/
  81 {
  82     AROS_LIBFUNC_INIT
  83
  84     struct GfxBase *GfxBase = GetPrivIBase(IntuitionBase)->GfxBase;
  85     DEBUG_SCROLLWINDOWRASTER(dprintf("ScrollWindowRaster: window 0x%lx dx %d dy %d (%d,%d)-(%d,%d)\n",
  86                      win, dx, dy, xmin, ymin, xmax, ymax));
  87
  88     SANITY_CHECK(win)
  89
  90 #ifdef __MORPHOS__
  91     LockLayers(&win->WScreen->LayerInfo);
  92 #endif
  93
  94     ScrollRasterBF(win->RPort,
  95                dx,
  96                dy,
  97                xmin,
  98                ymin,
  99                xmax,
 100                ymax);
 101
 102     /* Has there been damage to the layer? */
 103     if (WLAYER(win)->Flags & LAYERREFRESH)
 104     {
 105         /*
 106            Send a refresh message to the window if it doesn't already
 107            have one.
 108         */
 109
 110         struct ScrollWindowRasterMsg msg;
 111         msg.window = win;
 112
 113     #ifdef DAMAGECACHE
 114          RecordDamage(win->WScreen,IntuitionBase);
 115     #endif
 116
 117     #ifdef __MORPHOS
 118         UnlockLayers(&win->WScreen->LayerInfo);
 119     #endif
 120
 121         DoASyncAction((APTR)int_scrollwindowraster, &msg.msg, sizeof(msg), IntuitionBase);
 122     }
 123     else
 124     {
 125     #ifdef __MORPHOS__
 126         UnlockLayers(&win->WScreen->LayerInfo);
 127     #endif
 128     }
 129
 130     AROS_LIBFUNC_EXIT
 131 } /* ScrollWindowRaster */
 132
 133 /*****************************************************************************
 134
 135     NAME */
 136 #include <proto/intuition.h>
 137
 138     AROS_LH7(void, ScrollWindowRasterNoFill,
 139
 140 /*  SYNOPSIS */
 141         AROS_LHA(struct Window *, win , A1),
 142         AROS_LHA(WORD           , dx  , D0),
 143         AROS_LHA(WORD           , dy  , D1),
 144         AROS_LHA(WORD           , xmin, D2),
 145         AROS_LHA(WORD           , ymin, D3),
 146         AROS_LHA(WORD           , xmax, D4),
 147         AROS_LHA(WORD           , ymax, D5),
 148
 149 /*  LOCATION */
 150         struct IntuitionBase *, IntuitionBase, 159, Intuition)
 151
 152 /*  FUNCTION
 153         Scrolls the content of the rectangle defined by (xmin,ymin)-
 154         (xmax,ymax) by (dx,dy) towards (0,0). This function calls
 155         ScrollRasterBF().
 156         The advantage of this function over calling ScrollRasterBF() is
 157         that the window will be informed about damages. A damage happens
 158         if in a simple window parts from concelealed areas are scrolled
 159         to visible areas. The visible areas will be blank as simple
 160         windows store no data for concealed areas.
 161         The blank parts that appear due to the scroll will be filled
 162         with EraseRect() and are not considered damaged areas.
 163
 164     INPUTS
 165         win       - pointer to window in which to scroll
 166         dx,dy     - scroll by (dx,dy) towards (0,0)
 167         xmin,ymin - upper left corner of the rectangle that will be
 168                     affected by the scroll
 169         xmax,ymax - lower rigfht corner of the rectangle that will be
 170                     affected by the scroll
 171
 172     RESULT
 173         None.
 174
 175     NOTES
 176         This function is compatible with MorphOS.
 177
 178     EXAMPLE
 179
 180     BUGS
 181
 182     SEE ALSO
 183
 184     INTERNALS
 185
 186 *****************************************************************************/
 187
 188 {
 189     AROS_LIBFUNC_INIT
 190
 191     struct GfxBase *GfxBase = GetPrivIBase(IntuitionBase)->GfxBase;
 192     DEBUG_SCROLLWINDOWRASTER(dprintf("ScrollWindowRaster: window 0x%lx dx %d dy %d (%d,%d)-(%d,%d)\n",
 193                      win, dx, dy, xmin, ymin, xmax, ymax));
 194
 195     SANITY_CHECK(win)
 196
 197 #ifdef __MORPHOS__
 198     LockLayers(&win->WScreen->LayerInfo);
 199 #endif
 200
 201     {
 202         WORD adx = abs(dx);
 203         WORD ady = abs(dy);
 204         WORD width = xmax - xmin + 1;
 205         WORD height = ymax - ymin + 1;
 206         BOOL scroll = TRUE;
 207
 208         if (adx<width && ady<height)
 209         {
 210             WORD cw = width  - adx;
 211             WORD ch = height - ady;
 212             WORD x1 = xmin;
 213             WORD x2 = xmin;
 214             WORD y1 = ymin;
 215             WORD y2 = ymin;
 216
 217             if (dx>=0) x1 += dx;
 218             else       x2 -= dx;
 219
 220             if (dy>=0) y1 += dy;
 221             else       y2 -= dy;
 222
 223             ClipBlit(win->RPort,x1,y1,win->RPort,x2,y2,cw,ch,0xc0);
 224         }
 225
 226         if (!(WLAYER(win)->Flags & LAYERREFRESH))
 227         {
 228             struct Rectangle rect;
 229             struct ClipRect *cr;
 230
 231             rect.MinX = WLAYER(win)->bounds.MinX + xmin;
 232             rect.MinY = WLAYER(win)->bounds.MinY + ymin;
 233             rect.MaxX = WLAYER(win)->bounds.MinX + xmax;
 234             rect.MaxY = WLAYER(win)->bounds.MinY + ymax;
 235
 236             for (cr=WLAYER(win)->ClipRect;cr;cr=cr->Next)
 237             {
 238                 if (rect.MinX < cr->bounds.MinX) continue;
 239                 if (rect.MaxX > cr->bounds.MaxX) continue;
 240                 if (rect.MinY < cr->bounds.MinY) continue;
 241                 if (rect.MaxY > cr->bounds.MaxY) continue;
 242                 scroll = FALSE;
 243                 break;
 244             }
 245         }
 246
 247         if (scroll)
 248         {
 249             ULONG mask = win->RPort->Mask;
 250             win->RPort->Mask = 0;
 251             ScrollRaster(win->RPort,dx,dy,xmin,ymin,xmax,ymax);
 252             win->RPort->Mask = mask;
 253         }
 254     }
 255
 256     /* Has there been damage to the layer? */
 257     if (WLAYER(win)->Flags & LAYERREFRESH)
 258     {
 259         /*
 260            Send a refresh message to the window if it doesn't already
 261            have one.
 262         */
 263
 264         struct ScrollWindowRasterMsg msg;
 265         msg.window = win;
 266
 267     #ifdef DAMAGECACHE
 268         RecordDamage(win->WScreen,IntuitionBase);
 269     #endif
 270
 271     #ifdef __MORPHOS__
 272         UnlockLayers(&win->WScreen->LayerInfo);
 273     #endif
 274         DoASyncAction((APTR)int_scrollwindowraster, &msg.msg, sizeof(msg), IntuitionBase);
 275     }
 276     else
 277     {
 278     #ifdef __MORPHOS__
 279         UnlockLayers(&win->WScreen->LayerInfo);
 280     #endif
 281     }
 282
 283     AROS_LIBFUNC_EXIT
 284 } /* ScrollWindowRaster */
 285
 286 static VOID int_scrollwindowraster(struct ScrollWindowRasterMsg *msg,
 287                                    struct IntuitionBase *IntuitionBase)
 288 {
 289     struct LayersBase *LayersBase = GetPrivIBase(IntuitionBase)->LayersBase;
 290     struct Window *window = msg->window;
 291
 292     LOCK_REFRESH(window->WScreen);
 293
 294     if (WLAYER(window)->Flags & LAYERREFRESH)
 295         WindowNeedsRefresh(window, IntuitionBase);
 296
 297     UNLOCK_REFRESH(window->WScreen);
 298 }