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xwords/xwords4/common/boarddrw.c
Eric House 32e1530d3f i => ii; no other change
2012-08-22 07:44:21 -07:00

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/* -*- compile-command: "cd ../linux && make MEMDEBUG=TRUE -j3"; -*- */
/*
* Copyright 1997 - 2011 by Eric House (xwords@eehouse.org). All rights
* reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/* Re: boards that can't fit on the screen. Let's have an assumption, that
* the tray is always either below the board or overlapping its bottom. There
* is never any board visible below the tray. But it's possible to have a
* board small enough that scrolling is necessary even with the tray hidden.
*
* Currently we don't specify the board bounds. We give top,left and the size
* of cells, and the board figures out the bounds. That's probably a mistake.
* Better to give bounds, and maybe a min scale, and let it figure out how
* many cells can be visible. Could it also decide if the tray should overlap
* or be below? Some platforms have to own that decision since the tray is
* narrower than the board. So give them separate bounds-setting functions,
* and let the board code figure out if they overlap.
*
* Problem: the board size must always be a multiple of the scale. The
* platform-specific code has an easy time doing that math. The board can't:
* it'd have to take bounds, then spit them back out slightly modified. It'd
* also have to refuse to work (maybe just assert) if asked to take bounds
* before it had a min_scale.
*
* Another way of looking at it closer to the current: the board's position
* and the tray's bounds determine the board's bounds. If the board's vScale
* times the number of rows places its would-be bottom at or above the bottom
* of the tray, then it's potentially visible. If its would-be bottom is
* above the top of the tray, no scrolling is needed. But if it's below the
* tray entirely then scrolling will happen even with the tray hidden. As
* above, we assume the board never appears below the tray.
*/
#include "comtypes.h"
#include "board.h"
#include "scorebdp.h"
#include "game.h"
#include "server.h"
#include "comms.h" /* for CHANNEL_NONE */
#include "dictnry.h"
#include "draw.h"
#include "engine.h"
#include "util.h"
#include "mempool.h" /* debug only */
#include "memstream.h"
#include "strutils.h"
#include "LocalizedStrIncludes.h"
#include "boardp.h"
#include "dragdrpp.h"
#include "dbgutil.h"
#ifdef CPLUS
extern "C" {
#endif
static XP_Bool drawCell( BoardCtxt* board, XP_U16 col, XP_U16 row,
XP_Bool skipBlanks );
static void drawBoard( BoardCtxt* board );
static void scrollIfCan( BoardCtxt* board );
#ifdef KEYBOARD_NAV
static XP_Bool cellFocused( const BoardCtxt* board, XP_U16 col, XP_U16 row );
#endif
#ifdef XWFEATURE_MINIWIN
static void drawTradeWindowIf( BoardCtxt* board );
#else
# define drawTradeWindowIf( board )
#endif
#ifdef XWFEATURE_SEARCHLIMIT
static HintAtts figureHintAtts( BoardCtxt* board, XP_U16 col, XP_U16 row );
#else
# define figureHintAtts(b,c,r) HINT_BORDER_NONE
#endif
#ifdef POINTER_SUPPORT
static void drawDragTileIf( BoardCtxt* board );
#endif
#ifdef KEYBOARD_NAV
#ifdef PERIMETER_FOCUS
static void
invalOldPerimeter( BoardCtxt* board )
{
/* We need to inval the center of the row that's moving into the center
from a border (at which point it got borders drawn on it.) */
ScrollData* vsd = &board->sd[SCROLL_V];
XP_S16 diff = vsd->offset - board->prevYScrollOffset;
XP_U16 firstRow, lastRow;
XP_ASSERT( diff != 0 );
if ( diff < 0 ) {
/* moving up; inval row previously on bottom */
firstRow = vsd->offset + 1;
lastRow = board->prevYScrollOffset;
} else {
XP_U16 nVisible = vsd->lastVisible - vsd->offset + 1;
lastRow = board->prevYScrollOffset + nVisible - 1;
firstRow = lastRow - diff + 1;
}
XP_ASSERT( firstRow <= lastRow );
while ( firstRow <= lastRow ) {
board->redrawFlags[firstRow] |= ~0;
++firstRow;
}
} /* invalOldPerimeter */
#endif
#endif
/* if any of a blank's neighbors is invalid, so must the blank become (since
* they share a border and drawing the neighbor will redraw the blank's border
* too) We'll want to redraw only those blanks that are themselves already
* invalid *OR* that become invalid this way, and so we'll build a new
* BlankQueue of them and replace the old.
*
* I'm not sure what happens if two blanks are neighbors.
*/
#define INVAL_BIT_SET(b,c,r) (((b)->redrawFlags[(r)] & (1 <<(c))) != 0)
static void
invalBlanksWithNeighbors( BoardCtxt* board, BlankQueue* bqp )
{
XP_U16 ii;
XP_U16 lastCol, lastRow;
BlankQueue invalBlanks;
XP_U16 nInvalBlanks = 0;
lastCol = model_numCols(board->model) - 1;
lastRow = model_numRows(board->model) - 1;
for ( ii = 0; ii < bqp->nBlanks; ++ii ) {
XP_U16 modelCol = bqp->col[ii];
XP_U16 modelRow = bqp->row[ii];
XP_U16 col, row;
flipIf( board, modelCol, modelRow, &col, &row );
if ( INVAL_BIT_SET( board, col, row )
|| (col > 0 && INVAL_BIT_SET( board, col-1, row ))
|| (col < lastCol && INVAL_BIT_SET( board, col+1, row ))
|| (row > 0 && INVAL_BIT_SET( board, col, row-1 ))
|| (row < lastRow && INVAL_BIT_SET( board, col, row+1 )) ) {
invalCell( board, col, row );
invalBlanks.col[nInvalBlanks] = (XP_U8)col;
invalBlanks.row[nInvalBlanks] = (XP_U8)row;
++nInvalBlanks;
}
}
invalBlanks.nBlanks = nInvalBlanks;
XP_MEMCPY( bqp, &invalBlanks, sizeof(*bqp) );
} /* invalBlanksWithNeighbors */
#ifdef XWFEATURE_SEARCHLIMIT
static HintAtts
figureHintAtts( BoardCtxt* board, XP_U16 col, XP_U16 row )
{
HintAtts result = HINT_BORDER_NONE;
/* while lets us break to exit... */
while ( board->trayVisState == TRAY_REVEALED
&& !board->gi->hintsNotAllowed
&& board->gi->allowHintRect ) {
BdHintLimits limits;
if ( dragDropGetHintLimits( board, &limits ) ) {
/* do nothing */
} else if ( board->selInfo->hasHintRect ) {
limits = board->selInfo->limits;
} else {
break;
}
if ( col < limits.left ) break;
if ( row < limits.top ) break;
if ( col > limits.right ) break;
if ( row > limits.bottom ) break;
if ( col == limits.left ) {
result |= HINT_BORDER_LEFT;
}
if ( col == limits.right ) {
result |= HINT_BORDER_RIGHT;
}
if ( row == limits.top) {
result |= HINT_BORDER_TOP;
}
if ( row == limits.bottom ) {
result |= HINT_BORDER_BOTTOM;
}
#ifndef XWFEATURE_SEARCHLIMIT_DOCENTERS
if ( result == HINT_BORDER_NONE ) {
result = HINT_BORDER_CENTER;
}
#endif
break;
}
return result;
} /* figureHintAtts */
#endif
XP_Bool
rectContainsRect( const XP_Rect* rect1, const XP_Rect* rect2 )
{
return ( rect1->top <= rect2->top
&& rect1->left <= rect2->left
&& rect1->top + rect1->height >= rect2->top + rect2->height
&& rect1->left + rect1->width >= rect2->left + rect2->width );
} /* rectContainsRect */
#ifdef XWFEATURE_MINIWIN
static void
makeMiniWindowForTrade( BoardCtxt* board )
{
const XP_UCHAR* text;
text = draw_getMiniWText( board->draw, INTRADE_MW_TEXT );
makeMiniWindowForText( board, text, MINIWINDOW_TRADING );
} /* makeMiniWindowForTrade */
#endif
#ifdef XWFEATURE_CROSSHAIRS
static CellFlags
flagsForCrosshairs( const BoardCtxt* board, XP_U16 col, XP_U16 row )
{
CellFlags flags = 0;
if ( ! board->hideCrosshairs ) {
XP_Bool inHor, inVert;
dragDropInCrosshairs( board, col, row, &inHor, &inVert );
if ( inHor ) {
flags |= CELL_CROSSHOR;
}
if ( inVert ) {
flags |= CELL_CROSSVERT;
}
}
return flags;
}
#endif
static void
drawBoard( BoardCtxt* board )
{
if ( board->needsDrawing
&& draw_boardBegin( board->draw, &board->boardBounds,
board->sd[SCROLL_H].scale,
board->sd[SCROLL_V].scale,
dfsFor( board, OBJ_BOARD ) ) ) {
XP_Bool allDrawn = XP_TRUE;
XP_S16 ii;
XP_S16 col, row, nVisCols;
ModelCtxt* model = board->model;
BoardArrow const* arrow = NULL;
ScrollData* hsd = &board->sd[SCROLL_H];
ScrollData* vsd = &board->sd[SCROLL_V];
BlankQueue bq;
scrollIfCan( board ); /* this must happen before we count blanks
since it invalidates squares */
/* This is freaking expensive!!!! PENDING FIXME Can't we start from
what's invalid rather than scanning the entire model every time
somebody dirties a single cell? */
model_listPlacedBlanks( model, board->selPlayer,
board->trayVisState == TRAY_REVEALED, &bq );
dragDropAppendBlank( board, &bq );
invalBlanksWithNeighbors( board, &bq );
/* figure out now, before clearing inval bits, if we'll need to draw
the arrow later */
if ( board->trayVisState == TRAY_REVEALED ) {
BoardArrow const* tmpArrow = &board->selInfo->boardArrow;
if ( tmpArrow->visible ) {
XP_U16 col = tmpArrow->col;
XP_U16 row = tmpArrow->row;
if ( INVAL_BIT_SET( board, col, row )
&& !cellOccupied( board, col, row, XP_TRUE ) ) {
arrow = tmpArrow;
}
}
}
nVisCols = model_numCols( model ) - board->zoomCount;
for ( row = vsd->offset; row <= vsd->lastVisible; ++row ) {
RowFlags rowFlags = board->redrawFlags[row];
if ( rowFlags != 0 ) {
RowFlags failedBits = 0;
for ( col = 0; col < nVisCols; ++col ) {
RowFlags colMask = 1 << (col + hsd->offset);
if ( 0 != (rowFlags & colMask) ) {
if ( !drawCell( board, col + hsd->offset,
row, XP_TRUE )) {
failedBits |= colMask;
allDrawn = XP_FALSE;
}
}
}
board->redrawFlags[row] = failedBits;
}
}
/* draw the blanks we skipped before */
for ( ii = 0; ii < bq.nBlanks; ++ii ) {
if ( !drawCell( board, bq.col[ii], bq.row[ii], XP_FALSE ) ) {
allDrawn = XP_FALSE;
}
}
if ( !!arrow ) {
XP_U16 col = arrow->col;
XP_U16 row = arrow->row;
XP_Rect arrowRect;
if ( getCellRect( board, col, row, &arrowRect ) ) {
XWBonusType bonus;
HintAtts hintAtts;
CellFlags flags = CELL_NONE;
bonus = model_getSquareBonus( model, col, row );
hintAtts = figureHintAtts( board, col, row );
#ifdef KEYBOARD_NAV
if ( cellFocused( board, col, row ) ) {
flags |= CELL_ISCURSOR;
}
#endif
#ifdef XWFEATURE_CROSSHAIRS
flags |= flagsForCrosshairs( board, col, row );
#endif
draw_drawBoardArrow( board->draw, &arrowRect, bonus,
arrow->vert, hintAtts, flags );
}
}
/* I doubt the two of these can happen at the same time */
drawTradeWindowIf( board );
#ifdef POINTER_SUPPORT
drawDragTileIf( board );
#endif
draw_objFinished( board->draw, OBJ_BOARD, &board->boardBounds,
dfsFor( board, OBJ_BOARD ) );
board->needsDrawing = !allDrawn;
}
} /* drawBoard */
static XP_Bool
drawCell( BoardCtxt* board, XP_U16 col, XP_U16 row, XP_Bool skipBlanks )
{
XP_Bool success = XP_TRUE;
XP_Rect cellRect;
Tile tile;
XP_Bool isBlank, isEmpty, recent, pending = XP_FALSE;
XWBonusType bonus;
ModelCtxt* model = board->model;
DictionaryCtxt* dict = model_getDictionary( model );
XP_U16 modelCol, modelRow;
if ( dict != NULL && getCellRect( board, col, row, &cellRect ) ) {
/* We want to invert EITHER the current pending tiles OR the most recent
* move. So if the tray is visible AND there are tiles missing from it,
* show them. Otherwise show the most recent move.
*/
XP_U16 selPlayer = board->selPlayer;
XP_U16 curCount = model_getCurrentMoveCount( model, selPlayer );
XP_Bool showPending = board->trayVisState == TRAY_REVEALED
&& curCount > 0;
flipIf( board, col, row, &modelCol, &modelRow );
/* This 'while' is only here so I can 'break' below */
while ( board->trayVisState == TRAY_HIDDEN ||
!rectContainsRect( &board->trayBounds, &cellRect ) ) {
XP_UCHAR ch[4] = {'\0'};
XP_S16 owner = -1;
XP_Bool invert = XP_FALSE;
XP_Bitmaps bitmaps;
XP_Bitmaps* bptr = NULL;
const XP_UCHAR* textP = NULL;
HintAtts hintAtts;
CellFlags flags = CELL_NONE;
XP_Bool isOrigin;
XP_U16 value = 0;
isEmpty = !model_getTile( model, modelCol, modelRow, showPending,
selPlayer, &tile, &isBlank,
&pending, &recent );
if ( dragDropIsBeingDragged( board, col, row, &isOrigin ) ) {
flags |= isOrigin? CELL_DRAGSRC : CELL_DRAGCUR;
if ( isEmpty && !isOrigin ) {
dragDropTileInfo( board, &tile, &isBlank );
isEmpty = XP_FALSE;
}
showPending = pending = XP_TRUE;
}
if ( isEmpty ) {
isBlank = XP_FALSE;
flags |= CELL_ISEMPTY;
} else if ( isBlank && skipBlanks ) {
break;
} else {
Tile valTile = isBlank? dict_getBlankTile( dict ) : tile;
value = dict_getTileValue( dict, valTile );
if ( board->showColors ) {
owner = (XP_S16)model_getCellOwner( model, modelCol,
modelRow );
}
invert = showPending? pending : recent;
if ( board->showCellValues ) {
XP_SNPRINTF( ch, VSIZE(ch), "%d", value );
textP = ch;
} else {
if ( dict_faceIsBitmap( dict, tile ) ) {
dict_getFaceBitmaps( dict, tile, &bitmaps );
bptr = &bitmaps;
}
textP = dict_getTileString( dict, tile );
}
}
bonus = model_getSquareBonus( model, col, row );
hintAtts = figureHintAtts( board, col, row );
if ( (col==board->star_row) && (row==board->star_row) ) {
flags |= CELL_ISSTAR;
}
if ( invert ) {
flags |= CELL_HIGHLIGHT;
}
if ( isBlank ) {
flags |= CELL_ISBLANK;
}
#ifdef KEYBOARD_NAV
if ( cellFocused( board, col, row ) ) {
flags |= CELL_ISCURSOR;
}
#endif
#ifdef XWFEATURE_CROSSHAIRS
flags |= flagsForCrosshairs( board, col, row );
#endif
success = draw_drawCell( board->draw, &cellRect, textP, bptr,
tile, value, owner, bonus, hintAtts,
flags );
break;
}
}
return success;
} /* drawCell */
#ifdef KEYBOARD_NAV
DrawFocusState
dfsFor( BoardCtxt* board, BoardObjectType obj )
{
DrawFocusState dfs;
if ( (board->focussed == obj) && !board->hideFocus ) {
if ( board->focusHasDived ) {
dfs = DFS_DIVED;
} else {
dfs = DFS_TOP;
}
} else {
dfs = DFS_NONE;
}
return dfs;
} /* dfsFor */
static XP_Bool
cellFocused( const BoardCtxt* board, XP_U16 col, XP_U16 row )
{
XP_Bool focussed = XP_FALSE;
const ScrollData* hsd = &board->sd[SCROLL_H];
const ScrollData* vsd = &board->sd[SCROLL_V];
if ( (board->focussed == OBJ_BOARD) && !board->hideFocus ) {
if ( board->focusHasDived ) {
if ( (col == board->selInfo->bdCursor.col)
&& (row == board->selInfo->bdCursor.row) ) {
focussed = XP_TRUE;
}
} else {
#ifdef PERIMETER_FOCUS
focussed = (col == hsd->offset)
|| (col == hsd->lastVisible)
|| (row == vsd->offset)
|| (row == vsd->lastVisible);
#else
focussed = XP_TRUE;
#endif
}
}
return focussed;
} /* cellFocused */
#endif
#ifdef POINTER_SUPPORT
static void
drawDragTileIf( BoardCtxt* board )
{
if ( dragDropInProgress( board ) ) {
XP_U16 col, row;
if ( dragDropGetBoardTile( board, &col, &row ) ) {
XP_Rect rect;
Tile tile;
XP_Bool isBlank;
const XP_UCHAR* face;
XP_Bitmaps bitmaps;
XP_S16 value;
CellFlags flags;
getDragCellRect( board, col, row, &rect );
dragDropTileInfo( board, &tile, &isBlank );
face = getTileDrawInfo( board, tile, isBlank, &bitmaps,
&value );
flags = CELL_DRAGCUR;
if ( isBlank ) {
flags |= CELL_ISBLANK;
}
if ( board->hideValsInTray && !board->showCellValues ) {
flags |= CELL_VALHIDDEN;
}
draw_drawTileMidDrag( board->draw, &rect, face,
bitmaps.nBitmaps > 0 ? &bitmaps : NULL,
value, board->selPlayer, flags );
}
}
} /* drawDragTileIf */
#endif
static XP_S16
sumRowHeights( const BoardCtxt* board, XP_U16 row1, XP_U16 row2 )
{
const ScrollData* vsd = &board->sd[SCROLL_V];
XP_S16 sign = row1 > row2 ? -1 : 1;
XP_S16 result, ii;
if ( sign < 0 ) {
XP_U16 tmp = row1;
row1 = row2;
row2 = tmp;
}
for ( result = 0, ii = row1; ii < row2; ++ii ) {
result += vsd->dims[ii];
}
return result * sign;
}
static void
scrollIfCan( BoardCtxt* board )
{
ScrollData* vsd = &board->sd[SCROLL_V];
if ( vsd->offset != board->prevYScrollOffset ) {
XP_Rect scrollR = board->boardBounds;
XP_Bool scrolled;
XP_S16 dist;
#if defined KEYBOARD_NAV && defined PERIMETER_FOCUS
if ( (board->focussed == OBJ_BOARD)
&& !board->focusHasDived
&& !board->hideFocus ) {
invalOldPerimeter( board );
}
#endif
invalSelTradeWindow( board );
dist = sumRowHeights( board, board->prevYScrollOffset, vsd->offset );
scrolled = draw_vertScrollBoard( board->draw, &scrollR, dist,
dfsFor( board, OBJ_BOARD ) );
if ( scrolled ) {
/* inval the rows that have been scrolled into view. I'm cheating
making the client figure the inval rect, but Palm's the first
client and it does it so well.... */
invalCellsUnderRect( board, &scrollR );
} else {
board_invalAll( board );
}
board->prevYScrollOffset = vsd->offset;
}
} /* scrollIfCan */
#ifdef XWFEATURE_MINIWIN
static void
drawTradeWindowIf( BoardCtxt* board )
{
if ( board->tradingMiniWindowInvalid &&
TRADE_IN_PROGRESS(board) && board->trayVisState == TRAY_REVEALED ) {
MiniWindowStuff* stuff;
makeMiniWindowForTrade( board );
stuff = &board->miniWindowStuff[MINIWINDOW_TRADING];
draw_drawMiniWindow( board->draw, stuff->text,
&stuff->rect, (void**)NULL );
board->tradingMiniWindowInvalid = XP_FALSE;
}
} /* drawTradeWindowIf */
#endif
XP_Bool
board_draw( BoardCtxt* board )
{
if ( board->boardBounds.width > 0 ) {
drawScoreBoard( board );
drawTray( board );
drawBoard( board );
}
return !board->needsDrawing;
} /* board_draw */
#ifdef CPLUS
}
#endif
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