workbench/classes/gadgets/aroslistview/aroslistview_intern.h

   1 /*
   2     Copyright © 1995-2005, The AROS Development Team. All rights reserved.
   3     $Id$
   4 */
   5
   6 #ifndef AROSLISTVIEW_INTERN_H
   7 #define AROSLISTVIEW_INTERN_H
   8
   9
  10
  11 #ifndef EXEC_TYPES_H
  12 #   include <exec/types.h>
  13 #endif
  14 #ifndef EXEC_LIBRARIES_H
  15 #   include <exec/libraries.h>
  16 #endif
  17 #ifndef UTILITY_HOOKS_H
  18 #   include <utility/hooks.h>
  19 #endif
  20 #ifndef DOS_BPTR_H
  21 #   include <dos/bptr.h>
  22 #endif
  23 #ifndef GRAPHICS_RASTPORT_H
  24 #   include <graphics/rastport.h>
  25 #endif
  26 #ifndef INTUITION_CLASSES_H
  27 #   include <intuition/classes.h>
  28 #endif
  29 #ifndef INTUITION_CGHOOKS_H
  30 #   include <intuition/cghooks.h>
  31 #endif
  32 #ifndef INTUITION_GADGETCLASS_H
  33 #   include <intuition/gadgetclass.h>
  34 #endif
  35
  36 #define TURN_OFF_DEBUG
  37
  38 struct LVData
  39 {
  40     struct Hook *lvd_DisplayHook;
  41     struct Hook *lvd_RenderHook;
  42     Object      *lvd_List;
  43     STRPTR      *lvd_DHArray;
  44     struct ColumnAttrs *lvd_ColAttrs;
  45     struct TextFont *lvd_Font;
  46     LONG        lvd_First; /* The nuber of the first item showed in list */
  47     UWORD       lvd_EntryHeight;
  48
  49     /* Damage area */
  50
  51     UWORD       lvd_DamageOffset;
  52     UWORD       lvd_NumDamaged;
  53
  54     UBYTE       lvd_HorSpacing;
  55     UBYTE       lvd_VertSpacing;
  56     UBYTE       lvd_Flags;
  57
  58     /* Number of columns that the displayhook returns items for */
  59     UBYTE       lvd_MaxColumns;
  60     /* Number of colomns to view. Depends on AROSA_List_Format */
  61     UBYTE       lvd_ViewedColumns;
  62
  63     UBYTE       lvd_BackPen;
  64     UBYTE       lvd_FrontPen;
  65
  66     /* To prevent 'echo' OM_UPDATEs (double redraws) */
  67     UBYTE       lvd_NotifyCount;
  68
  69     /* For testting for doubleclicks */
  70     ULONG       lvd_StartSecs;
  71     ULONG       lvd_StartMicros;
  72
  73 };
  74
  75
  76
  77 /* The minwitdh of one or more colums is as large as the biggest entry */
  78 #define LVFLG_SPECIALCOLWIDTH   (1 << 0)
  79
  80 #define LVFLG_READONLY          (1 << 1)
  81 #define LVFLG_MULTISELECT       (1 << 2)
  82 #define LVFLG_DOUBLECLICK       (1 << 3)
  83
  84 /* Macros */
  85 #undef LVD
  86 #define LVD(x) ((struct LVData *)x)
  87
  88 #undef UB
  89 #define UB(x) ((UBYTE *)x)
  90
  91 #undef EG
  92 #define EG(o) ((struct ExtGadget *)o)
  93
  94 #undef MIN
  95 #define MIN(a,b) ((a < b) ? a : b)
  96
  97 #define ReCalcEntryHeight(data) \
  98                 data->lvd_EntryHeight =   data->lvd_Font->tf_YSize  \
  99                                         + data->lvd_VertSpacing;
 100
 101 #undef NumVisible
 102 #define NumVisible(ibox, eh) \
 103         (((ibox)->Height - LV_BORDERWIDTH_Y * 2) / eh)
 104
 105
 106
 107
 108 /* Constants */
 109 #define LV_BORDERWIDTH_X 2
 110 #define LV_BORDERWIDTH_Y 2
 111
 112 #define LV_DEFAULTHORSPACING 2
 113 #define LV_DEFAULTVERTSPACING 1
 114
 115 struct ColumnAttrs
 116 {
 117     UBYTE ca_Pen; /* Background pen for the entry */
 118     UBYTE ca_Flags;
 119
 120     UWORD ca_Delta;
 121     WORD ca_MinWidth; /* A value of -1 makes minwidth as small as the largest text */
 122
 123     /* computed before each render */
 124
 125     UWORD ca_Left;
 126     UWORD ca_Right;
 127     UWORD ca_Width;
 128
 129     /* Index into the array filled by displayhook for getting text for this column */
 130     UBYTE ca_DHIndex;
 131
 132 };
 133
 134 #define CA_ALIGN_MASK (3)
 135
 136 #define CA_ALIGN_LEFT   0
 137 #define CA_ALIGN_RIGHT  1
 138 #define CA_ALIGN_CENTRE 2
 139
 140 #define CAFLG_BAR               (1 << 3)
 141 #define CAFLG_SPECIALCOLWIDTH   (1 << 4)
 142
 143
 144 /* Prototypes */
 145 BOOL ParseFormatString(STRPTR, struct LVData *);
 146
 147 VOID RenderEntries(Class *, Object *, struct gpRender *, LONG, UWORD, BOOL);
 148
 149 VOID GetGadgetIBox(Object *, struct GadgetInfo *, struct IBox *);
 150 VOID DrawListBorder(struct RastPort *, UWORD *, struct IBox *, BOOL);
 151 VOID ComputeColumnWidths(UWORD, struct LVData *);
 152 VOID ComputeColLeftRight(UWORD, struct LVData *);
 153 UWORD ShownEntries(struct LVData *, struct IBox *);
 154 VOID NotifyAttrs(Class *, Object *, struct opSet *, struct TagItem *);
 155
 156 #endif /* AROSLISTVIEW_INTERN_H */