src/preferences/touchpad/TouchpadPref.cpp

   1 /*
   2  * Copyright 2008-2010, Haiku, Inc.
   3  * Distributed under the terms of the MIT License.
   4  *
   5  * Authors:
   6  *              Clemens Zeidler (haiku@Clemens-Zeidler.de)
   7  */
   8
   9
  10 #include "TouchpadPref.h"
  11
  12 #include <List.h>
  13 #include <FindDirectory.h>
  14 #include <File.h>
  15 #include <String.h>
  16
  17 #include <keyboard_mouse_driver.h>
  18
  19
  20 TouchpadPref::TouchpadPref()
  21 {
  22         fConnected = false;
  23         // default center position
  24         fWindowPosition.x = -1;
  25         fWindowPosition.y = -1;
  26
  27         ConnectToTouchPad();
  28
  29         if (LoadSettings() != B_OK)
  30                 Defaults();
  31
  32         fStartSettings = fSettings;
  33 }
  34
  35
  36 TouchpadPref::~TouchpadPref()
  37 {
  38         if (fConnected)
  39                 delete fTouchPad;
  40
  41         SaveSettings();
  42 }
  43
  44
  45 void
  46 TouchpadPref::Revert()
  47 {
  48         fSettings = fStartSettings;
  49 }
  50
  51
  52 status_t
  53 TouchpadPref::UpdateSettings()
  54 {
  55         if (!fConnected)
  56                 return B_ERROR;
  57
  58         LOG("UpdateSettings of device %s\n", fTouchPad->Name());
  59
  60         BMessage msg;
  61         msg.AddBool("scroll_twofinger", fSettings.scroll_twofinger);
  62         msg.AddBool("scroll_twofinger_horizontal",
  63                 fSettings.scroll_twofinger_horizontal);
  64         msg.AddFloat("scroll_rightrange", fSettings.scroll_rightrange);
  65         msg.AddFloat("scroll_bottomrange", fSettings.scroll_bottomrange);
  66         msg.AddInt16("scroll_xstepsize", fSettings.scroll_xstepsize);
  67         msg.AddInt16("scroll_ystepsize", fSettings.scroll_ystepsize);
  68         msg.AddInt8("scroll_acceleration", fSettings.scroll_acceleration);
  69         msg.AddInt8("tapgesture_sensibility", fSettings.tapgesture_sensibility);
  70
  71         return fTouchPad->Control(MS_SET_TOUCHPAD_SETTINGS, &msg);
  72 }
  73
  74
  75 void
  76 TouchpadPref::Defaults()
  77 {
  78         fSettings = kDefaultTouchpadSettings;
  79 }
  80
  81
  82 status_t
  83 TouchpadPref::GetSettingsPath(BPath &path)
  84 {
  85         status_t status = find_directory(B_USER_SETTINGS_DIRECTORY, &path);
  86         if (status < B_OK)
  87                 return status;
  88
  89         return path.Append(TOUCHPAD_SETTINGS_FILE);
  90 }
  91
  92
  93 status_t
  94 TouchpadPref::LoadSettings()
  95 {
  96         BPath path;
  97         status_t status = GetSettingsPath(path);
  98         if (status != B_OK)
  99                 return status;
 100
 101         BFile settingsFile(path.Path(), B_READ_ONLY);
 102         status = settingsFile.InitCheck();
 103         if (status != B_OK)
 104                 return status;
 105
 106         if (settingsFile.Read(&fSettings, sizeof(touchpad_settings))
 107                         != sizeof(touchpad_settings)) {
 108                 LOG("failed to load settings\n");
 109                 return B_ERROR;
 110         }
 111
 112         if (settingsFile.Read(&fWindowPosition, sizeof(BPoint))
 113                         != sizeof(BPoint)) {
 114                 LOG("failed to load settings\n");
 115                 return B_ERROR;
 116         }
 117
 118         return B_OK;
 119 }
 120
 121
 122 status_t
 123 TouchpadPref::SaveSettings()
 124 {
 125         BPath path;
 126         status_t status = GetSettingsPath(path);
 127         if (status != B_OK)
 128                 return status;
 129
 130         BFile settingsFile(path.Path(), B_READ_WRITE | B_CREATE_FILE);
 131         status = settingsFile.InitCheck();
 132         if (status != B_OK)
 133                 return status;
 134
 135         if (settingsFile.Write(&fSettings, sizeof(touchpad_settings))
 136                         != sizeof(touchpad_settings)) {
 137                 LOG("can't save settings\n");
 138                 return B_ERROR;
 139         }
 140
 141         if (settingsFile.Write(&fWindowPosition, sizeof(BPoint))
 142                         != sizeof(BPoint)) {
 143                 LOG("can't save window position\n");
 144                 return B_ERROR;
 145         }
 146
 147         return B_OK;
 148 }
 149
 150
 151 status_t
 152 TouchpadPref::ConnectToTouchPad()
 153 {
 154         BList devList;
 155         status_t status = get_input_devices(&devList);
 156         if (status != B_OK)
 157                 return status;
 158
 159         int32 i = 0;
 160         while (true) {
 161                 BInputDevice* dev = (BInputDevice*)devList.ItemAt(i);
 162                 if (dev == NULL)
 163                         break;
 164                 i++;
 165
 166                 LOG("input device %s\n", dev->Name());
 167
 168                 BString name = dev->Name();
 169
 170                 if (name.FindFirst("Touchpad") >= 0
 171                         && dev->Type() == B_POINTING_DEVICE
 172                         && !fConnected) {
 173                         fConnected = true;
 174                         fTouchPad = dev;
 175                         // Don't bail out here, since we need to delete the other devices
 176                         // yet.
 177                 } else {
 178                         delete dev;
 179                 }
 180         }
 181         if (fConnected)
 182                 return B_OK;
 183
 184         LOG("touchpad input device NOT found\n");
 185         return B_ENTRY_NOT_FOUND;
 186 }