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- #include <libraries/gadtools.h>
- #include <graphics/text.h>
- #include <proto/diskfont.h>
- #include <proto/gadtools.h>
- #include <proto/graphics.h>
- #include <proto/utility.h>
- #include <string.h>
- #include <ctype.h>
- #include "dialog.h"
-
- static VOID setupButton( DialogElement *de )
- {
- struct TextExtent te;
- struct RastPort rp;
- struct TextAttr *ta;
- struct TextFont *tf;
- STRPTR text;
- LONG textwidth, texttop, textbottom;
-
- if( !de )
- return;
-
- de->idcmp_mask |= BUTTONIDCMP | IDCMP_REFRESHWINDOW | IDCMP_VANILLAKEY;
-
- ta = (struct TextAttr *)GetTagData( NGDA_TextAttr, 0, de->taglist );
- if( !ta )
- return;
- tf = OpenDiskFont( ta );
- if( !tf )
- return;
- InitRastPort( &rp );
- SetFont( &rp, tf );
-
- text = (STRPTR)GetTagData( NGDA_GadgetText, 0, de->taglist );
- 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;
-
- setMinWidth( de, textwidth + 8 );
- setMaxWidth( de, MAX_SPACE );
- setMinTopExtent( de, texttop + 2 );
- setMaxTopExtent( de, texttop + 2 );
- setMinBottomExtent( de, textbottom + 2 );
- setMaxBottomExtent( de, textbottom + 2 );
- }
-
- static ULONG layoutButton( DialogElement *de, LayoutMessage *lm )
- {
- struct NewGadget ng;
- ULONG error = DIALOGERR_OK;
-
- if( !de )
- return DIALOGERR_BAD_ARGS;
- if( !lm )
- return DIALOGERR_BAD_ARGS;
-
- 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 );
- ng.ng_LeftEdge = lm->lm_X;
- ng.ng_TopEdge = lm->lm_Y - lm->lm_Top;
- ng.ng_Width = lm->lm_Width;
- ng.ng_Height = lm->lm_Top + lm->lm_Bottom;
- de->object = CreateGadgetA( BUTTON_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 *matchButton( DialogElement *de, MatchMessage *mm )
- {
- struct IntuiMessage *imsg;
- struct TagItem *tag;
- DialogElement *match = NULL;
-
- if( !de )
- return NULL;
- if( !mm )
- return NULL;
-
- imsg = mm->mm_IntuiMsg;
- switch( imsg->Class )
- {
- case IDCMP_GADGETUP:
- if( de->object == imsg->IAddress )
- match = de;
- break;
- case IDCMP_VANILLAKEY:
- if( tag = FindTagItem( DA_EquivalentKey, de->taglist ) )
- if( tolower( imsg->Code ) == tolower( tag->ti_Data ) )
- match = de;
- break;
- }
- return match;
- }
-
- ULONG dispatchButton( struct Hook *hook, DialogElement *de, DialogMessage *dm )
- {
- ULONG result;
-
- switch( dm->dm_MethodID )
- {
- case DIALOGM_GETSTRUCT:
- result = DESF_HBaseline;
- break;
- case DIALOGM_SETUP:
- setupButton( de );
- break;
- case DIALOGM_LAYOUT:
- result = layoutButton( de, (LayoutMessage *)dm );
- break;
- case DIALOGM_MATCH:
- result = (ULONG)matchButton( de, (MatchMessage *)dm );
- break;
- case DIALOGM_CLEAR:
- break;
- case DIALOGM_SETATTRS:
- setGTAttrs( de, (SetAttrsMessage *)dm );
- break;
- }
- return result;
- }
-