blob: 8db9c5183a28850abb4a9b8e30c4bb257486f840 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
|
/*! \file mousedriver.hcc
*
* \section generic This module takes care of mouse input. The mouse
* input function itself is however performed by the
* touchscreen of the RC200.
*
* \section project Project information.
* Project Graphic Equalizer\n
* \author O.M. Schinagl
* \date 20041011
* \version 0.1
*
* \section copyright Copyright
* Copyright ©2004 Koninklijke Philips Electronics N.V. All rights reserved
*
* \section history Change history
* 20041011: O.M. Schinagl\n Initial version
*
********************************************************************/
/******** System Includes *************/
#include <stdlib.hch>
#include "pal_master.hch"
#include "pal_mouse.hch"
/******** Application Includes ********/
#include "mouse_shared.hch"
#include "mouse.hch"
/*! \fn void mouse_main(mousedata_t *mousedata);
* \brief Main mousedriver. This function never returns! It calls the
* main mousehandler and returns the States and coordinates
* into the shared mpram.
*
* \param void None.
*
* \return Never Returns.
* \retval void
*/
macro proc mouse_main(mousedata)
{
unsigned 14 touch_sampler;
unsigned 10 x, oldx;
unsigned 9 y, oldy;
unsigned 3 mousestate, oldmousestate;
unsigned 1 touch, touched, oldtouched;
/*
* We only check for mouse states once every 2^14 time. This to
* overcome the sampling of the 'Touch' state of the RC200 libs. When
* using newer libs this might be overkill, e.g. smaller values may due
* or sampling all together will be redundant.
*/
for(touch_sampler = 1;;touch_sampler++) {
if (!touch_sampler) {
/*
* We are here ready to set mouse states. We compare
* current and previous states and thereby determine
* the state to send to others
*/
if (touched) {
if(oldtouched) {
mousestate = MOUSE_STATE_DOWN;
} else {
mousestate = MOUSE_STATE_ON_PRESS;
}
oldtouched = TRUE;
} else {
if(oldtouched) {
mousestate = MOUSE_STATE_ON_RELEASE;
} else {
mousestate = MOUSE_STATE_UP;
}
oldtouched = FALSE;
}
/*
* We have now processed our Touch. Reset it for the
* next run.
*/
touched = FALSE;
/*
* Compare Previous States and Coordinates to determine
* wether they have changed. If so, Copy them into
* shared memory, notify the listening processes and
* Set the new as previous values for the next run.
*/
if ((oldmousestate != mousestate) || (oldx != x) || (oldy != y)) {
mousedata.x = x;
mousedata.y = y;
mousedata.state = mousestate;
mousedata.status = MOUSE_UPDATED;
oldx = x;
oldy = y;
oldmousestate = mousestate;
}
}
/*
* Read the current X and Y of the 'cursor' and register wether
* the display was touched. If touched store this in a local
* store. This we do to catch the sampling of the RC200 lib.
*/
RC200TouchScreenReadScaled(&x, &y, &touch);
if (touch) {
touched = TRUE;
}
}
} /* --- mouse_main_loop() --- */
|
