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Aminet 1 (Walnut Creek)
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Aminet - June 1993 [Walnut Creek].iso
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dialoglib.lha
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cycle.c
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C/C++ Source or Header
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1993-03-07
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7KB
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294 lines
#include <libraries/gadtools.h>
#include <graphics/text.h>
#include <proto/diskfont.h>
#include <proto/gadtools.h>
#include <proto/graphics.h>
#include <proto/intuition.h>
#include <proto/utility.h>
#include <string.h>
#include <ctype.h>
#include "dialog.h"
#ifdef DEBUG1
#include <stdio.h>
#endif
static LONG countChoices( DialogElement *de )
{
LONG count = 0;
STRPTR *label;
if( !de )
return 0;
if( label = (STRPTR *)GetTagData( GTCY_Labels, 0, de->taglist ) )
while( *label++ )
count++;
return count;
}
static ULONG getCycleStructure( DialogElement *de )
{
ULONG place, structure = DESF_HBaseline;
if( !de )
return 0;
if( GetTagData( NGDA_GadgetText, 0, de->taglist ) )
{
place = getTextPlacement( GetTagData( NGDA_Flags, 0, de->taglist ), PLACETEXT_LEFT );
switch( place )
{
case PLACETEXT_LEFT:
case PLACETEXT_RIGHT:
structure |= DESF_VBaseline;
break;
}
}
return structure;
}
static VOID setupCycle( DialogElement *de )
{
struct TextExtent te;
struct RastPort rp;
struct TextAttr *ta;
struct TextFont *tf;
STRPTR text, *label;
ULONG place;
LONG width, top, bottom, textwidth, texttop, textbottom;
LONG *storage;
if( !de )
return;
de->idcmp_mask |= CYCLEIDCMP | IDCMP_REFRESHWINDOW | IDCMP_VANILLAKEY;
storage = (LONG *)GetTagData( DA_Storage, 0, de->taglist );
if( storage )
*storage = GetTagData( GTCY_Active, 0, de->taglist );
ta = (struct TextAttr *)GetTagData( NGDA_TextAttr, 0, de->taglist );
if( !ta )
return;
tf = OpenDiskFont( ta );
if( !tf )
return;
InitRastPort( &rp );
SetFont( &rp, tf );
top = 2 + tf->tf_Baseline;
bottom = 2 + tf->tf_YSize - tf->tf_Baseline;
width = 0;
if( label = (STRPTR *)GetTagData( GTCY_Labels, 0, de->taglist ) )
while( *label )
{
LONG labwidth, labtop, labbottom;
TextExtent( &rp, *label, strlen( *label ), &te );
labwidth = te.te_Extent.MaxX + 1 - te.te_Extent.MinX;
labtop = - te.te_Extent.MinY;
labbottom = te.te_Extent.MaxY + 1;
if( labwidth > width )
width = labwidth;
if( labtop > top )
top = labtop;
if( labbottom > bottom )
bottom = labbottom;
label++;
}
width += 28; /* add some space for the cycle glyph and border */
text = (STRPTR)GetTagData( NGDA_GadgetText, 0, de->taglist );
place = getTextPlacement( GetTagData( NGDA_Flags, 0, de->taglist ), PLACETEXT_LEFT );
if( text )
TextExtent( &rp, text, strlen( text ), &te );
else
{
te.te_Extent.MinX = te.te_Extent.MinY = 0;
te.te_Extent.MaxX = te.te_Extent.MaxY = -1;
}
CloseFont( tf );
textwidth = te.te_Extent.MaxX + 1 - te.te_Extent.MinX;
texttop = - te.te_Extent.MinY;
textbottom = te.te_Extent.MaxY + 1;
switch( place )
{
case PLACETEXT_ABOVE:
if( width < textwidth )
width = textwidth;
setMinWidth( de, width );
setMaxWidth( de, MAX_SPACE );
setMinTopExtent( de, texttop + textbottom + INTERHEIGHT );
setMaxTopExtent( de, texttop + textbottom + INTERHEIGHT );
setMinBottomExtent( de, top + bottom );
setMaxBottomExtent( de, top + bottom );
break;
case PLACETEXT_BELOW:
if( width < textwidth )
width = textwidth;
setMinWidth( de, width );
setMaxWidth( de, MAX_SPACE );
setMinTopExtent( de, top + bottom );
setMaxTopExtent( de, top + bottom );
setMinBottomExtent( de, texttop + textbottom + INTERHEIGHT );
setMaxBottomExtent( de, texttop + textbottom + INTERHEIGHT );
break;
case PLACETEXT_LEFT:
if( top < texttop )
top = texttop;
if( bottom < textbottom )
bottom = textbottom;
setMinLeftExtent( de, textwidth + INTERWIDTH );
setMaxLeftExtent( de, textwidth + INTERWIDTH );
setMinRightExtent( de, width );
setMaxRightExtent( de, MAX_SPACE );
setMinTopExtent( de, top );
setMaxTopExtent( de, top );
setMinBottomExtent( de, bottom );
setMaxBottomExtent( de, bottom );
break;
case PLACETEXT_RIGHT:
if( top < texttop )
top = texttop;
if( bottom < textbottom )
bottom = textbottom;
setMinLeftExtent( de, width );
setMaxLeftExtent( de, MAX_SPACE );
setMinRightExtent( de, textwidth + INTERWIDTH );
setMaxRightExtent( de, textwidth + INTERWIDTH );
setMinTopExtent( de, top );
setMaxTopExtent( de, top );
setMinBottomExtent( de, bottom );
setMaxBottomExtent( de, bottom );
break;
case PLACETEXT_IN:
if( width < textwidth )
width = textwidth;
if( top < texttop )
top = texttop;
if( bottom < textbottom )
bottom = textbottom;
setMinWidth( de, width );
setMaxWidth( de, MAX_SPACE );
setMinTopExtent( de, top );
setMaxTopExtent( de, top );
setMinBottomExtent( de, bottom );
setMaxBottomExtent( de, bottom );
break;
}
}
static ULONG layoutCycle( DialogElement *de, LayoutMessage *lm )
{
struct NewGadget ng;
ULONG error = DIALOGERR_OK;
if( !de )
return DIALOGERR_BAD_ARGS;
if( !lm )
return DIALOGERR_BAD_ARGS;
#ifdef DEBUG1
printf(
"layoutCycle : x %d, y %d, width %d, height %d, left %d, right %d, top %d, bottom %d\n",
lm->lm_X, lm->lm_Y, lm->lm_Width, lm->lm_Height,
lm->lm_Left, lm->lm_Right, lm->lm_Top, lm->lm_Bottom );
#endif
ng.ng_GadgetText = (UBYTE *)GetTagData( NGDA_GadgetText, 0, de->taglist );
ng.ng_TextAttr = (struct TextAttr *)GetTagData( NGDA_TextAttr, 0, de->taglist );
ng.ng_VisualInfo = (APTR)GetTagData( NGDA_VisualInfo, 0, de->taglist );
ng.ng_Flags = GetTagData( NGDA_Flags, 0, de->taglist );
layoutGTSingleLined( &ng, lm, PLACETEXT_LEFT );
de->object = CreateGadgetA( CYCLE_KIND, *lm->lm_PreviousPtr, &ng, de->taglist );
*lm->lm_PreviousPtr = de->object; /* advance "previous" pointer to new object */
if( !de->object )
error = DIALOGERR_NO_MEMORY;
return error;
}
static DialogElement *matchCycle( DialogElement *de, MatchMessage *mm )
{
struct IntuiMessage *imsg;
DialogElement *match = NULL;
struct TagItem *tag;
LONG *storage;
if( !de )
return NULL;
if( !mm )
return NULL;
storage = (LONG *)GetTagData( DA_Storage, 0, de->taglist );
imsg = mm->mm_IntuiMsg;
switch( imsg->Class )
{
case IDCMP_GADGETUP:
if( de->object == imsg->IAddress )
{
if( storage )
*storage = (ULONG)imsg->Code; /* store current level */
match = de;
}
break;
case IDCMP_VANILLAKEY:
if( storage )
if( tag = FindTagItem( DA_EquivalentKey, de->taglist ) )
if( imsg->Code == tolower( tag->ti_Data ) )
{
if( *storage < countChoices( de ) - 1 )
(*storage)++;
else
*storage = 0;
GT_SetGadgetAttrs( de->object, imsg->IDCMPWindow, NULL,
GTCY_Active, *storage,
TAG_DONE );
match = de;
}
else if( imsg->Code == toupper( tag->ti_Data ) )
{
if( *storage > 0 )
(*storage)--;
else
*storage = countChoices( de ) - 1;
GT_SetGadgetAttrs( de->object, imsg->IDCMPWindow, NULL,
GTCY_Active, *storage,
TAG_DONE );
match = de;
}
break;
}
return match;
}
ULONG dispatchCycle( struct Hook *hook, DialogElement *de, DialogMessage *dm )
{
ULONG result;
switch( dm->dm_MethodID )
{
case DIALOGM_GETSTRUCT:
result = getCycleStructure( de );
break;
case DIALOGM_SETUP:
setupCycle( de );
break;
case DIALOGM_LAYOUT:
result = layoutCycle( de, (LayoutMessage *)dm );
break;
case DIALOGM_MATCH:
result = (ULONG)matchCycle( de, (MatchMessage *)dm );
break;
case DIALOGM_CLEAR:
break;
case DIALOGM_SETATTRS:
setGTAttrs( de, (SetAttrsMessage *)dm );
break;
}
return result;
}