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1 /*
2     SDL - Simple DirectMedia Layer
3     Copyright (C) 1997-2006 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@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 
ph_FreeWMCursor(_THIS,WMcursor * cursor)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 
ph_CreateWMCursor(_THIS,Uint8 * data,Uint8 * mask,int w,int h,int hot_x,int hot_y)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 
ph_GetWMPhCursor(WMcursor * cursor)112 PhCursorDef_t ph_GetWMPhCursor(WMcursor *cursor)
113 {
114     return (*cursor->ph_cursor);
115 }
116 
ph_ShowWMCursor(_THIS,WMcursor * cursor)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 
ph_WarpWMCursor(_THIS,Uint16 x,Uint16 y)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 
ph_CheckMouseMode(_THIS)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 
ph_UpdateMouse(_THIS)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