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Attempt to find font that best fits string to encosing rect. Works

Browse source 
but only with a hack: need to understand pango better.
This commit is contained in:
ehouse 2008-03-25 12:47:05 +00:00
parent a6dda53907
commit ae67a58a26
1 changed files with 80 additions and 68 deletions
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148
xwords4/linux/gtkdraw.c
View file

@ -63,13 +63,13 @@ insetRect( XP_Rect* r, short i )
#define GTKMIN_W_HT 12
static void
eraseRect( GtkDrawCtx* dctx, const XP_Rect* rect )
gtkEraseRect( GtkDrawCtx* dctx, const XP_Rect* rect )
{
gdk_draw_rectangle( DRAW_WHAT(dctx),
dctx->drawing_area->style->white_gc,
TRUE, rect->left, rect->top,
rect->width, rect->height );
} /* eraseRect */
} /* gtkEraseRect */
static void
frameRect( GtkDrawCtx* dctx, const XP_Rect* rect )
@ -103,7 +103,7 @@ static void
gtk_prim_draw_clearRect( DrawCtx* p_dctx, XP_Rect* rect )
{
GtkDrawCtx* dctx = (GtkDrawCtx*)p_dctx;
eraseRect( dctx, rect );
gtkEraseRect( dctx, rect );
} /* gtk_prim_draw_clearRect */
static void
@ -164,7 +164,7 @@ layout_for_ht( GtkDrawCtx* dctx, XP_U16 ht )
fps, 0 );
char font[32];
snprintf( font, sizeof(font), "helvetica normal %d", ht );
snprintf( font, sizeof(font), "helvetica normal %dpx", ht );
layout = pango_layout_new( dctx->pangoContext );
fps->fontdesc = pango_font_description_from_string( font );
@ -185,8 +185,8 @@ draw_string_at( GtkDrawCtx* dctx, const char* str, XP_U16 fontHt,
const GdkColor* frground, const GdkColor* bkgrnd )
{
PangoLayout* layout;
gint x = where->left;
gint y = where->top;
gint xx = where->left;
gint yy = where->top;
layout = layout_for_ht( dctx, fontHt );
@ -198,12 +198,12 @@ draw_string_at( GtkDrawCtx* dctx, const char* str, XP_U16 fontHt,
switch( just ) {
case XP_GTK_JUST_CENTER:
x += (where->width - width) / 2;
y += (where->height - height) / 2;
xx += (where->width - width) / 2;
yy += (where->height - height) / 2;
break;
case XP_GTK_JUST_BOTTOMRIGHT:
x += where->width - width;
y += where->height - height;
xx += where->width - width;
yy += where->height - height;
break;
case XP_GTK_JUST_TOPLEFT:
default:
@ -213,7 +213,7 @@ draw_string_at( GtkDrawCtx* dctx, const char* str, XP_U16 fontHt,
}
gdk_draw_layout_with_colors( DRAW_WHAT(dctx), dctx->drawGC,
x, y, layout,
xx, yy, layout,
frground, bkgrnd );
} /* draw_string_at */
@ -418,7 +418,7 @@ gtk_draw_drawCell( DrawCtx* p_dctx, const XP_Rect* rect, const XP_UCHAR* letter,
XP_Bool showGrid = dctx->globals->gridOn;
XP_Bool highlight = (flags & CELL_HIGHLIGHT) != 0;
eraseRect( dctx, rect );
gtkEraseRect( dctx, rect );
insetRect( &rectInset, 1 );
@ -523,7 +523,7 @@ gtkDrawTileImpl( DrawCtx* p_dctx, const XP_Rect* rect, const XP_UCHAR* textP,
XP_Rect insetR = *rect;
if ( clearBack ) {
eraseRect( dctx, &insetR );
gtkEraseRect( dctx, &insetR );
}
if ( val >= 0 ) {
@ -642,7 +642,7 @@ gtk_draw_drawTrayDivider( DrawCtx* p_dctx, const XP_Rect* rect,
GtkDrawCtx* dctx = (GtkDrawCtx*)p_dctx;
XP_Rect r = *rect;
eraseRect( dctx, &r );
gtkEraseRect( dctx, &r );
++r.left;
r.width -= selected? 2:1;
@ -687,7 +687,7 @@ gtk_draw_clearRect( DrawCtx* p_dctx, const XP_Rect* rectP )
++rect.width;
++rect.top;
eraseRect( dctx, &rect );
gtkEraseRect( dctx, &rect );
} /* gtk_draw_clearRect */
@ -714,38 +714,62 @@ gtk_draw_scoreBegin( DrawCtx* p_dctx, const XP_Rect* rect,
GtkDrawCtx* dctx = (GtkDrawCtx*)p_dctx;
/* gdk_gc_set_clip_rectangle( dctx->drawGC, (GdkRectangle*)rect ); */
eraseRect( dctx, rect );
gtkEraseRect( dctx, rect );
dctx->topFocus = dfs == DFS_TOP;
} /* gtk_draw_scoreBegin */
static PangoLayout*
getLayoutToFitRect( GtkDrawCtx* dctx, const char* str, const XP_Rect* rect )
{
PangoLayout* layout;
float ratio, ratioH;
int width, height;
XP_U16 len = strlen(str);
/* First measure it using any font at all */
layout = layout_for_ht( dctx, 24 );
pango_layout_set_text( layout, str, len );
pango_layout_get_pixel_size( layout, &width, &height );
/* Figure the ratio of is to should-be. The smaller of these is the one
we must use. */
ratio = (float)rect->width / (float)width;
ratioH = (float)rect->height / (float)height;
if ( ratioH < ratio ) {
ratio = ratioH;
}
height = 24.0 * ratio;
layout = layout_for_ht( dctx, height );
pango_layout_set_text( layout, str, len );
return layout;
} /* getLayoutToFitRect */
static void
gtkDrawDrawRemText( DrawCtx* p_dctx, const XP_Rect* r, XP_S16 nTilesLeft,
gtkDrawDrawRemText( DrawCtx* p_dctx, const XP_Rect* rect, XP_S16 nTilesLeft,
XP_U16* widthP, XP_U16* heightP )
{
GtkDrawCtx* dctx = (GtkDrawCtx*)p_dctx;
char buf[10];
gint left = r->left;
gint top = r->top;
XP_Bool draw = !widthP;
PangoLayout* layout = layout_for_ht( dctx, r->height );
sprintf( buf, "rem:%d", nTilesLeft );
pango_layout_set_text( layout, buf, strlen(buf) );
if ( draw ) {
gdk_draw_layout_with_colors( DRAW_WHAT(dctx), dctx->drawGC,
left, top, layout,
&dctx->black, NULL );
} else {
snprintf( buf, sizeof(buf), "rem:%d", nTilesLeft );
if ( !!widthP ) {
int width, height;
PangoLayout* layout = getLayoutToFitRect( dctx, buf, rect );
pango_layout_get_pixel_size( layout, &width, &height );
if ( height > GTK_HOR_SCORE_HEIGHT ) {
height = GTK_HOR_SCORE_HEIGHT;
if ( width > rect->width ) {
width = rect->width;
}
if ( height > rect->height ) {
height = rect->height;
}
*widthP = width;
*heightP = height;
} else {
draw_string_at( dctx, buf, rect->height,
rect, XP_GTK_JUST_TOPLEFT,
&dctx->black, NULL );
}
} /* gtkDrawDrawRemText */
@ -764,50 +788,43 @@ gtk_draw_drawRemText( DrawCtx* p_dctx, const XP_Rect* rInner,
} /* gtk_draw_drawRemText */
static void
scoreWidthAndText( GtkDrawCtx* XP_UNUSED(dctx), PangoLayout* layout, char* buf,
const DrawScoreInfo* dsi, XP_U16* widthP, XP_U16* heightP )
formatScoreText( char* buf, XP_U16 bufLen, const DrawScoreInfo* dsi )
{
XP_S16 score = dsi->totalScore;
XP_U16 nTilesLeft = dsi->nTilesLeft;
XP_Bool isTurn = dsi->isTurn;
int used;
char* borders = "";
if ( isTurn ) {
borders = "*";
}
sprintf( buf, "%s%.3d", borders, score );
used = snprintf( buf, bufLen, "%s%.3d", borders, score );
if ( (nTilesLeft < MAX_TRAY_TILES) && (nTilesLeft > 0) ) {
char nbuf[10];
sprintf( nbuf, ":%d", nTilesLeft );
(void)strcat( buf, nbuf );
}
(void)strcat( buf, borders );
if ( !!widthP || !!heightP ) {
int height, width;
pango_layout_set_text( layout, buf, strlen(buf) );
pango_layout_get_pixel_size( layout, &width, &height );
if ( !!widthP ) {
*widthP = width;
}
if ( !!heightP ) {
if ( height > GTK_HOR_SCORE_HEIGHT ) {
height = GTK_HOR_SCORE_HEIGHT;
}
*heightP = height;
}
}
} /* scoreWidthAndText */
snprintf( buf+used, bufLen-used, "%s", borders );
} /* formatScoreText */
static void
gtk_draw_measureScoreText( DrawCtx* p_dctx, const XP_Rect* r,
gtk_draw_measureScoreText( DrawCtx* p_dctx, const XP_Rect* bounds,
const DrawScoreInfo* dsi,
XP_U16* width, XP_U16* height )
XP_U16* widthP, XP_U16* heightP )
{
GtkDrawCtx* dctx = (GtkDrawCtx*)p_dctx;
char buf[20];
PangoLayout* layout = layout_for_ht( dctx, r->height-2 );
scoreWidthAndText( dctx, layout, buf, dsi, width, height );
PangoLayout* layout;
int height, width;
formatScoreText( buf, sizeof(buf), dsi );
layout = getLayoutToFitRect( dctx, buf, bounds );
pango_layout_get_pixel_size( layout, &width, &height );
*widthP = width;
*heightP = height;
} /* gtk_draw_measureScoreText */
static void
@ -816,13 +833,8 @@ gtk_draw_score_drawPlayer( DrawCtx* p_dctx, const XP_Rect* rInner,
{
GtkDrawCtx* dctx = (GtkDrawCtx*)p_dctx;
char scoreBuf[20];
XP_U16 x;
XP_U16 width;
PangoLayout* layout = layout_for_ht( dctx, rInner->height );
scoreWidthAndText( dctx, layout, scoreBuf, dsi,
&width, NULL );
x = rInner->left + ((rInner->width - width) /2);
formatScoreText( scoreBuf, sizeof(scoreBuf), dsi );
gdk_gc_set_foreground( dctx->drawGC, &dctx->playerColors[dsi->playerNum] );
@ -830,7 +842,7 @@ gtk_draw_score_drawPlayer( DrawCtx* p_dctx, const XP_Rect* rInner,
gdk_draw_rectangle( DRAW_WHAT(dctx), dctx->drawGC,
TRUE, rOuter->left, rOuter->top,
rOuter->width, rOuter->height );
eraseRect( dctx, rInner );
gtkEraseRect( dctx, rInner );
}
draw_string_at( dctx, scoreBuf, rInner->height - 1,
@ -862,7 +874,7 @@ gtk_draw_score_pendingScore( DrawCtx* p_dctx, const XP_Rect* rect,
localR = *rect;
insetRect( &localR, 1 );
eraseRect( dctx, &localR );
gtkEraseRect( dctx, &localR );
ht = localR.height >> 2;
draw_string_at( dctx, "Pts:", ht,
@ -903,7 +915,7 @@ gtk_draw_drawTimer( DrawCtx* p_dctx, const XP_Rect* rInner,
gtkFormatTimerText( buf, secondsLeft );
/* gdk_gc_set_clip_rectangle( dctx->drawGC, (GdkRectangle*)rInner ); */
eraseRect( dctx, rInner );
gtkEraseRect( dctx, rInner );
draw_string_at( dctx, buf, rInner->height-1,
rInner, XP_GTK_JUST_CENTER,
&dctx->black, NULL );
@ -962,7 +974,7 @@ gtk_draw_drawMiniWindow( DrawCtx* p_dctx, const XP_UCHAR* text,
/* play some skanky games to get the shadow drawn under and to the
right... */
eraseRect( dctx, &localR );
gtkEraseRect( dctx, &localR );
insetRect( &localR, 1 );
--localR.width;
@ -971,7 +983,7 @@ gtk_draw_drawMiniWindow( DrawCtx* p_dctx, const XP_UCHAR* text,
--localR.top;
--localR.left;
eraseRect( dctx, &localR );
gtkEraseRect( dctx, &localR );
frameRect( dctx, &localR );
draw_string_at( dctx, text, GTKMIN_W_HT,