content/browser/renderer_host/overscroll_configuration.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "content/public/browser/overscroll_configuration.h"
   6
   7 #include "base/logging.h"
   8
   9 namespace {
  10
  11 float g_horiz_threshold_complete = 0.25f;
  12 float g_vert_threshold_complete = 0.20f;
  13
  14 float g_horiz_threshold_start_touchscreen = 50.f;
  15 float g_horiz_threshold_start_touchpad = 50.f;
  16 float g_vert_threshold_start = 0.f;
  17
  18 float g_horiz_resist_after = 30.f;
  19 float g_vert_resist_after = 30.f;
  20
  21 }
  22
  23 namespace content {
  24
  25 void SetOverscrollConfig(OverscrollConfig config, float value) {
  26   switch (config) {
  27     case OVERSCROLL_CONFIG_HORIZ_THRESHOLD_COMPLETE:
  28       g_horiz_threshold_complete = value;
  29       break;
  30
  31     case OVERSCROLL_CONFIG_VERT_THRESHOLD_COMPLETE:
  32       g_vert_threshold_complete = value;
  33       break;
  34
  35     case OVERSCROLL_CONFIG_HORIZ_THRESHOLD_START_TOUCHSCREEN:
  36       g_horiz_threshold_start_touchscreen = value;
  37       break;
  38
  39     case OVERSCROLL_CONFIG_HORIZ_THRESHOLD_START_TOUCHPAD:
  40       g_horiz_threshold_start_touchpad = value;
  41       break;
  42
  43     case OVERSCROLL_CONFIG_VERT_THRESHOLD_START:
  44       g_vert_threshold_start = value;
  45       break;
  46
  47     case OVERSCROLL_CONFIG_HORIZ_RESIST_AFTER:
  48       g_horiz_resist_after = value;
  49       break;
  50
  51     case OVERSCROLL_CONFIG_VERT_RESIST_AFTER:
  52       g_vert_resist_after = value;
  53       break;
  54
  55     case OVERSCROLL_CONFIG_NONE:
  56     case OVERSCROLL_CONFIG_COUNT:
  57       NOTREACHED();
  58   }
  59 }
  60
  61 float GetOverscrollConfig(OverscrollConfig config) {
  62   switch (config) {
  63     case OVERSCROLL_CONFIG_HORIZ_THRESHOLD_COMPLETE:
  64       return g_horiz_threshold_complete;
  65
  66     case OVERSCROLL_CONFIG_VERT_THRESHOLD_COMPLETE:
  67       return g_vert_threshold_complete;
  68
  69     case OVERSCROLL_CONFIG_HORIZ_THRESHOLD_START_TOUCHSCREEN:
  70       return g_horiz_threshold_start_touchscreen;
  71
  72     case OVERSCROLL_CONFIG_HORIZ_THRESHOLD_START_TOUCHPAD:
  73       return g_horiz_threshold_start_touchpad;
  74
  75     case OVERSCROLL_CONFIG_VERT_THRESHOLD_START:
  76       return g_vert_threshold_start;
  77
  78     case OVERSCROLL_CONFIG_HORIZ_RESIST_AFTER:
  79       return g_horiz_resist_after;
  80
  81     case OVERSCROLL_CONFIG_VERT_RESIST_AFTER:
  82       return g_vert_resist_after;
  83
  84     case OVERSCROLL_CONFIG_NONE:
  85     case OVERSCROLL_CONFIG_COUNT:
  86       NOTREACHED();
  87   }
  88
  89   return -1.f;
  90 }
  91
  92 }  // namespace content