src/lib/elm_widget_photocam.h

   1 #ifndef ELM_WIDGET_PHOTOCAM_H
   2 #define ELM_WIDGET_PHOTOCAM_H
   3
   4 #include "elm_interface_scrollable.h"
   5
   6 /**
   7  * @addtogroup Widget
   8  * @{
   9  *
  10  * @section elm-photocam-class The Elementary Photocam Class
  11  *
  12  * Elementary, besides having the @ref Photocam widget, exposes its
  13  * foundation -- the Elementary Photocam Class -- in order to create
  14  * other widgets which are a photocam with some more logic on top.
  15  */
  16
  17 /**
  18  * @def ELM_PHOTOCAM_CLASS
  19  *
  20  * Use this macro to cast whichever subclass of
  21  * #Elm_Photocam_Smart_Class into it, so to access its fields.
  22  *
  23  * @ingroup Widget
  24  */
  25 #define ELM_PHOTOCAM_CLASS(x) ((Elm_Photocam_Smart_Class *) x)
  26
  27 /**
  28  * @def ELM_PHOTOCAM_DATA
  29  *
  30  * Use this macro to cast whichever subdata of
  31  * #Elm_Photocam_Smart_Data into it, so to access its fields.
  32  *
  33  * @ingroup Widget
  34  */
  35 #define ELM_PHOTOCAM_DATA(x) ((Elm_Photocam_Smart_Data *) x)
  36
  37 /**
  38  * @def ELM_PHOTOCAM_SMART_CLASS_VERSION
  39  *
  40  * Current version for Elementary photocam @b base smart class, a value
  41  * which goes to _Elm_Photocam_Smart_Class::version.
  42  *
  43  * @ingroup Widget
  44  */
  45 #define ELM_PHOTOCAM_SMART_CLASS_VERSION 1
  46
  47 /**
  48  * @def ELM_PHOTOCAM_SMART_CLASS_INIT
  49  *
  50  * Initializer for a whole #Elm_Photocam_Smart_Class structure, with
  51  * @c NULL values on its specific fields.
  52  *
  53  * @param smart_class_init initializer to use for the "base" field
  54  * (#Evas_Smart_Class).
  55  *
  56  * @see EVAS_SMART_CLASS_INIT_NULL
  57  * @see EVAS_SMART_CLASS_INIT_NAME_VERSION
  58  * @see ELM_PHOTOCAM_SMART_CLASS_INIT_NULL
  59  * @see ELM_PHOTOCAM_SMART_CLASS_INIT_NAME_VERSION
  60  *
  61  * @ingroup Widget
  62  */
  63 #define ELM_PHOTOCAM_SMART_CLASS_INIT(smart_class_init)                        \
  64   {smart_class_init, ELM_PHOTOCAM_SMART_CLASS_VERSION}
  65
  66 /**
  67  * @def ELM_PHOTOCAM_SMART_CLASS_INIT_NULL
  68  *
  69  * Initializer to zero out a whole #Elm_Photocam_Smart_Class structure.
  70  *
  71  * @see ELM_PHOTOCAM_SMART_CLASS_INIT_NAME_VERSION
  72  * @see ELM_PHOTOCAM_SMART_CLASS_INIT
  73  *
  74  * @ingroup Widget
  75  */
  76 #define ELM_PHOTOCAM_SMART_CLASS_INIT_NULL \
  77   ELM_PHOTOCAM_SMART_CLASS_INIT(EVAS_SMART_CLASS_INIT_NULL)
  78
  79 /**
  80  * @def ELM_PHOTOCAM_SMART_CLASS_INIT_NAME_VERSION
  81  *
  82  * Initializer to zero out a whole #Elm_Photocam_Smart_Class structure and
  83  * set its name and version.
  84  *
  85  * This is similar to #ELM_PHOTOCAM_SMART_CLASS_INIT_NULL, but it will
  86  * also set the version field of #Elm_Photocam_Smart_Class (base field)
  87  * to the latest #ELM_PHOTOCAM_SMART_CLASS_VERSION and name it to the
  88  * specific value.
  89  *
  90  * It will keep a reference to the name field as a <c>"const char *"</c>,
  91  * i.e., the name must be available while the structure is
  92  * used (hint: static or global variable!) and must not be modified.
  93  *
  94  * @see ELM_PHOTOCAM_SMART_CLASS_INIT_NULL
  95  * @see ELM_PHOTOCAM_SMART_CLASS_INIT
  96  *
  97  * @ingroup Widget
  98  */
  99 #define ELM_PHOTOCAM_SMART_CLASS_INIT_NAME_VERSION(name) \
 100   ELM_PHOTOCAM_SMART_CLASS_INIT(ELM_WIDGET_SMART_CLASS_INIT_NAME_VERSION(name))
 101
 102 /**
 103  * Elementary photocam base smart class. This inherits directly from
 104  * #Elm_Widget_Smart_Class and is meant to build widgets extending the
 105  * behavior of a photocam.
 106  *
 107  * All of the functions listed on @ref Photocam namespace will work for
 108  * objects deriving from #Elm_Photocam_Smart_Class.
 109  */
 110 typedef struct _Elm_Photocam_Smart_Class
 111 {
 112    Elm_Widget_Smart_Class base;
 113
 114    int                    version; /**< Version of this smart class definition */
 115 } Elm_Photocam_Smart_Class;
 116
 117 /**
 118  * Base widget smart data extended with photocam instance data.
 119  */
 120 typedef struct _Elm_Photocam_Smart_Data     Elm_Photocam_Smart_Data;
 121 typedef struct _Elm_Photocam_Pan_Smart_Data Elm_Photocam_Pan_Smart_Data;
 122 typedef struct _Elm_Phocam_Grid             Elm_Phocam_Grid;
 123 typedef struct _Elm_Photocam_Grid_Item      Elm_Photocam_Grid_Item;
 124
 125 struct _Elm_Photocam_Grid_Item
 126 {
 127    Elm_Photocam_Smart_Data *sd;
 128    Evas_Object             *img;
 129
 130    struct
 131    {
 132       int x, y, w, h;
 133    } src, out;
 134
 135    Eina_Bool                want : 1;
 136    Eina_Bool                have : 1;
 137 };
 138
 139 struct _Elm_Phocam_Grid
 140 {
 141    int                     tsize; /* size of tile (tsize x tsize pixels) */
 142    int                     zoom; /* zoom level tiles want for optimal
 143                                   * display (1, 2, 4, 8) */
 144    int                     iw, ih; /* size of image in pixels */
 145    int                     w, h; /* size of grid image in pixels
 146                                   * (represented by grid) */
 147    int                     gw, gh; /* size of grid in tiles */
 148    Elm_Photocam_Grid_Item *grid;  /* the grid (gw * gh items) */
 149    Eina_Bool               dead : 1; /* old grid. will die as soon as anim is
 150                                       * over */
 151 };
 152
 153 struct _Elm_Photocam_Smart_Data
 154 {
 155    Elm_Widget_Smart_Data                 base; /* base widget smart data as
 156                                                 * first member obligatory, as
 157                                                 * we're inheriting from it */
 158
 159    Evas_Object                          *hit_rect;
 160    Evas_Object                          *g_layer;
 161
 162    const Elm_Scrollable_Smart_Interface *s_iface;
 163
 164    Evas_Object                          *pan_obj;
 165
 166    Evas_Coord                            pan_x, pan_y, minw, minh;
 167
 168    double                                g_layer_start;
 169    double                                zoom;
 170    Elm_Photocam_Zoom_Mode                mode;
 171    Evas_Coord                            pvx, pvy, px, py, zoom_point_x,
 172                                          zoom_point_y;
 173
 174    struct
 175    {
 176       int imx, imy;
 177       struct
 178       {
 179          int             x_start, y_start;
 180          int             x_end, y_end;
 181          double          t_start;
 182          double          t_end;
 183          Ecore_Animator *animator;
 184       } bounce;
 185    } g_layer_zoom;
 186
 187    const char     *file;
 188
 189    Ecore_Job      *calc_job;
 190    Ecore_Timer    *scr_timer;
 191    Ecore_Timer    *long_timer;
 192    Ecore_Animator *zoom_animator;
 193    double          t_start, t_end;
 194
 195    struct
 196    {
 197       int imw, imh;
 198       int w, h;
 199       int ow, oh, nw, nh;
 200       struct
 201       {
 202          double x, y;
 203       } spos;
 204    } size;
 205
 206    struct
 207    {
 208       Eina_Bool  show : 1;
 209       Evas_Coord x, y, w, h;
 210    } show;
 211
 212    int          tsize;
 213    Evas_Object *img;  /* low res version of image (scale down == 8) */
 214    int          no_smooth;
 215    int          preload_num;
 216
 217    Eina_List   *grids;
 218
 219    Eina_Bool    main_load_pending : 1;
 220    Eina_Bool    longpressed : 1;
 221    Eina_Bool    do_gesture : 1;
 222    Eina_Bool    do_region : 1;
 223    Eina_Bool    zoom_g_layer : 1;
 224    Eina_Bool    resized : 1;
 225    Eina_Bool    on_hold : 1;
 226    Eina_Bool    paused : 1;
 227 };
 228
 229 typedef struct _Elm_Photocam_Pan_Smart_Class
 230 {
 231    Elm_Pan_Smart_Class base;
 232 } Elm_Photocam_Pan_Smart_Class;
 233
 234 struct _Elm_Photocam_Pan_Smart_Data
 235 {
 236    Elm_Pan_Smart_Data       base;
 237    Elm_Photocam_Smart_Data *wsd;
 238 };
 239
 240 /**
 241  * @}
 242  */
 243
 244 EAPI extern const char ELM_PHOTOCAM_SMART_NAME[];
 245 EAPI extern const char ELM_PHOTOCAM_PAN_SMART_NAME[];
 246 EAPI const Elm_Photocam_Smart_Class *elm_photocam_smart_class_get(void);
 247
 248 #define ELM_PHOTOCAM_DATA_GET(o, sd) \
 249   Elm_Photocam_Smart_Data * sd = evas_object_smart_data_get(o)
 250
 251 #define ELM_PHOTOCAM_PAN_DATA_GET(o, sd) \
 252   Elm_Photocam_Pan_Smart_Data * sd = evas_object_smart_data_get(o)
 253
 254 #define ELM_PHOTOCAM_DATA_GET_OR_RETURN(o, ptr)      \
 255   ELM_PHOTOCAM_DATA_GET(o, ptr);                     \
 256   if (!ptr)                                          \
 257     {                                                \
 258        CRITICAL("No widget data for object %p (%s)", \
 259                 o, evas_object_type_get(o));         \
 260        return;                                       \
 261     }
 262
 263 #define ELM_PHOTOCAM_DATA_GET_OR_RETURN_VAL(o, ptr, val) \
 264   ELM_PHOTOCAM_DATA_GET(o, ptr);                         \
 265   if (!ptr)                                              \
 266     {                                                    \
 267        CRITICAL("No widget data for object %p (%s)",     \
 268                 o, evas_object_type_get(o));             \
 269        return val;                                       \
 270     }
 271
 272 #define ELM_PHOTOCAM_CHECK(obj)                     \
 273   if (!obj || !elm_widget_type_check                \
 274         ((obj), ELM_PHOTOCAM_SMART_NAME, __func__)) \
 275     return
 276
 277 #endif