Home | History | Annotate | Download | only in photon 
      1 /*
      2     SDL - Simple DirectMedia Layer
      3     Copyright (C) 1997-2012 Sam Lantinga
      4 
      5     This library is free software; you can redistribute it and/or
      6     modify it under the terms of the GNU Lesser General Public
      7     License as published by the Free Software Foundation; either
      8     version 2.1 of the License, or (at your option) any later version.
      9 
     10     This library is distributed in the hope that it will be useful,
     11     but WITHOUT ANY WARRANTY; without even the implied warranty of
     12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     13     Lesser General Public License for more details.
     14 
     15     You should have received a copy of the GNU Lesser General Public
     16     License along with this library; if not, write to the Free Software
     17     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
     18 
     19     Sam Lantinga
     20     slouken (at) libsdl.org
     21 */
     22 #include "SDL_config.h"
     23 
     24 #include "SDL_mouse.h"
     25 #include "../../events/SDL_events_c.h"
     26 #include "../SDL_cursor_c.h"
     27 #include "SDL_ph_mouse_c.h"
     28 
     29 struct WMcursor
     30 {
     31     PhCursorDef_t *ph_cursor ;
     32 };
     33 
     34 void ph_FreeWMCursor(_THIS, WMcursor *cursor)
     35 {
     36     if (window != NULL)
     37     {
     38         SDL_Lock_EventThread();
     39 
     40         if (PtSetResource(window, Pt_ARG_CURSOR_TYPE, Ph_CURSOR_INHERIT, 0) < 0)
     41         {
     42             /* TODO: output error msg */
     43         }
     44 
     45         SDL_Unlock_EventThread();
     46     }
     47 
     48     SDL_free(cursor);
     49 }
     50 
     51 WMcursor *ph_CreateWMCursor(_THIS, Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y)
     52 {
     53     WMcursor* cursor;
     54     int clen, i;
     55     unsigned char bit, databit, maskbit;
     56 
     57     /* Allocate and initialize the cursor memory */
     58     if ((cursor = (WMcursor*)SDL_malloc(sizeof(WMcursor))) == NULL)
     59     {
     60         SDL_OutOfMemory();
     61         return(NULL);
     62     }
     63     SDL_memset(cursor,0,sizeof(WMcursor));
     64 
     65     cursor->ph_cursor = (PhCursorDef_t *) SDL_malloc(sizeof(PhCursorDef_t) + 32*4*2);
     66 
     67     if (cursor->ph_cursor == NULL)
     68     {
     69         SDL_SetError("ph_CreateWMCursor(): cursor malloc failed !\n");
     70         return NULL;
     71     }
     72 
     73     SDL_memset(cursor->ph_cursor,0,(sizeof(PhCursorDef_t) + 32*4*2));
     74 
     75     cursor->ph_cursor->hdr.type =Ph_RDATA_CURSOR;
     76     cursor->ph_cursor->size1.x = (short)w;
     77     cursor->ph_cursor->size1.y = (short)h;
     78     cursor->ph_cursor->offset1.x = (short)hot_x;
     79     cursor->ph_cursor->offset1.y = (short)hot_y;
     80     cursor->ph_cursor->bytesperline1 = (char)w/8;
     81     cursor->ph_cursor->color1 = Pg_WHITE;
     82     cursor->ph_cursor->size2.x = (short)w;
     83     cursor->ph_cursor->size2.y = (short)h;
     84     cursor->ph_cursor->offset2.x = (short)hot_x;
     85     cursor->ph_cursor->offset2.y = (short)hot_y;
     86     cursor->ph_cursor->bytesperline2 = (char)w/8;
     87     cursor->ph_cursor->color2 = Pg_BLACK;
     88 
     89     clen = (w/8)*h;
     90 
     91     /* Copy the mask and the data to different bitmap planes */
     92     for (i=0; i<clen; ++i)
     93     {
     94         for (bit = 0; bit < 8; bit++)
     95         {
     96             databit = data[i] & (1 << bit);
     97             maskbit = mask[i] & (1 << bit);
     98 
     99             cursor->ph_cursor->images[i] |= (databit == 0) ? maskbit : 0;
    100             /* If the databit != 0, treat it as a black pixel and
    101              * ignore the maskbit (can't do an inverted color) */
    102             cursor->ph_cursor->images[i+clen] |= databit;
    103         }
    104     }
    105 
    106     /* #bytes following the hdr struct */
    107     cursor->ph_cursor->hdr.len =sizeof(PhCursorDef_t) + clen*2 - sizeof(PhRegionDataHdr_t);
    108 
    109     return (cursor);
    110 }
    111 
    112 PhCursorDef_t ph_GetWMPhCursor(WMcursor *cursor)
    113 {
    114     return (*cursor->ph_cursor);
    115 }
    116 
    117 int ph_ShowWMCursor(_THIS, WMcursor* cursor)
    118 {
    119     PtArg_t args[3];
    120     int nargs = 0;
    121 
    122     /* Don't do anything if the display is gone */
    123     if (window == NULL)
    124     {
    125         return (0);
    126     }
    127 
    128     /* looks like photon can't draw mouse cursor in direct mode */
    129     if ((this->screen->flags & SDL_FULLSCREEN) == SDL_FULLSCREEN)
    130     {
    131          /* disable the fake mouse in the fullscreen OpenGL mode */
    132          if ((this->screen->flags & SDL_OPENGL) == SDL_OPENGL)
    133          {
    134              cursor=NULL;
    135          }
    136          else
    137          {
    138              return (0);
    139          }
    140     }
    141 
    142     /* Set the photon cursor, or blank if cursor is NULL */
    143     if (cursor!=NULL)
    144     {
    145         PtSetArg(&args[0], Pt_ARG_CURSOR_TYPE, Ph_CURSOR_BITMAP, 0);
    146         /* Could set next to any PgColor_t value */
    147         PtSetArg(&args[1], Pt_ARG_CURSOR_COLOR, Ph_CURSOR_DEFAULT_COLOR , 0);
    148         PtSetArg(&args[2], Pt_ARG_BITMAP_CURSOR, cursor->ph_cursor, (cursor->ph_cursor->hdr.len + sizeof(PhRegionDataHdr_t)));
    149         nargs = 3;
    150     }
    151     else /* Ph_CURSOR_NONE */
    152     {
    153         PtSetArg(&args[0], Pt_ARG_CURSOR_TYPE, Ph_CURSOR_NONE, 0);
    154         nargs = 1;
    155     }
    156 
    157     SDL_Lock_EventThread();
    158 
    159     if (PtSetResources(window, nargs, args) < 0 )
    160     {
    161         return (0);
    162     }
    163 
    164     SDL_Unlock_EventThread();
    165 
    166     return (1);
    167 }
    168 
    169 
    170 void ph_WarpWMCursor(_THIS, Uint16 x, Uint16 y)
    171 {
    172     short abs_x, abs_y;
    173 
    174     SDL_Lock_EventThread();
    175     PtGetAbsPosition( window, &abs_x, &abs_y );
    176     PhMoveCursorAbs( PhInputGroup(NULL), x + abs_x, y + abs_y );
    177     SDL_Unlock_EventThread();
    178 }
    179 
    180 
    181 void ph_CheckMouseMode(_THIS)
    182 {
    183     /* If the mouse is hidden and input is grabbed, we use relative mode */
    184     if ( !(SDL_cursorstate & CURSOR_VISIBLE) && (this->input_grab != SDL_GRAB_OFF))
    185     {
    186         mouse_relative = 1;
    187     }
    188     else
    189     {
    190         mouse_relative = 0;
    191     }
    192 }
    193 
    194 
    195 void ph_UpdateMouse(_THIS)
    196 {
    197     PhCursorInfo_t phcursor;
    198     short abs_x;
    199     short abs_y;
    200 
    201     /* Lock the event thread, in multi-threading environments */
    202     SDL_Lock_EventThread();
    203 
    204     /* synchronizing photon mouse cursor position and SDL mouse position, if cursor appears over window. */
    205     PtGetAbsPosition(window, &abs_x, &abs_y);
    206     PhQueryCursor(PhInputGroup(NULL), &phcursor);
    207     if (((phcursor.pos.x >= abs_x) && (phcursor.pos.x <= abs_x + this->screen->w)) &&
    208         ((phcursor.pos.y >= abs_y) && (phcursor.pos.y <= abs_y + this->screen->h)))
    209     {
    210         SDL_PrivateAppActive(1, SDL_APPMOUSEFOCUS);
    211         SDL_PrivateMouseMotion(0, 0, phcursor.pos.x-abs_x, phcursor.pos.y-abs_y);
    212     }
    213     else
    214     {
    215         SDL_PrivateAppActive(0, SDL_APPMOUSEFOCUS);
    216     }
    217 
    218     /* Unlock the event thread, in multi-threading environments */
    219     SDL_Unlock_EventThread();
    220 }
    221