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| 1 /* | |
| 2 * Copyright (C) 2011, 2012 Igalia S.L. | |
| 3 * | |
| 4 * This library is free software; you can redistribute it and/or | |
| 5 * modify it under the terms of the GNU Library General Public | |
| 6 * License as published by the Free Software Foundation; either | |
| 7 * version 2 of the License, or (at your option) any later version. | |
| 8 * | |
| 9 * This library is distributed in the hope that it will be useful, | |
| 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 12 * Library General Public License for more details. | |
| 13 * | |
| 14 * You should have received a copy of the GNU Library General Public License | |
| 15 * along with this library; see the file COPYING.LIB. If not, write to | |
| 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | |
| 17 * Boston, MA 02110-1301, USA. | |
| 18 */ | |
| 19 | |
| 20 #include "config.h" | |
| 21 #include "WebKitAccessibleInterfaceValue.h" | |
| 22 | |
| 23 #if HAVE(ACCESSIBILITY) | |
| 24 | |
| 25 #include "AccessibilityObject.h" | |
| 26 #include "HTMLNames.h" | |
| 27 #include "WebKitAccessibleWrapperAtk.h" | |
| 28 | |
| 29 using namespace WebCore; | |
| 30 | |
| 31 static AccessibilityObject* core(AtkValue* value) | |
| 32 { | |
| 33 if (!WEBKIT_IS_ACCESSIBLE(value)) | |
| 34 return 0; | |
| 35 | |
| 36 return webkitAccessibleGetAccessibilityObject(WEBKIT_ACCESSIBLE(value)); | |
| 37 } | |
| 38 | |
| 39 static void webkitAccessibleValueGetCurrentValue(AtkValue* value, GValue* gValue
) | |
| 40 { | |
| 41 memset(gValue, 0, sizeof(GValue)); | |
| 42 g_value_init(gValue, G_TYPE_FLOAT); | |
| 43 g_value_set_float(gValue, core(value)->valueForRange()); | |
| 44 } | |
| 45 | |
| 46 static void webkitAccessibleValueGetMaximumValue(AtkValue* value, GValue* gValue
) | |
| 47 { | |
| 48 memset(gValue, 0, sizeof(GValue)); | |
| 49 g_value_init(gValue, G_TYPE_FLOAT); | |
| 50 g_value_set_float(gValue, core(value)->maxValueForRange()); | |
| 51 } | |
| 52 | |
| 53 static void webkitAccessibleValueGetMinimumValue(AtkValue* value, GValue* gValue
) | |
| 54 { | |
| 55 memset(gValue, 0, sizeof(GValue)); | |
| 56 g_value_init(gValue, G_TYPE_FLOAT); | |
| 57 g_value_set_float(gValue, core(value)->minValueForRange()); | |
| 58 } | |
| 59 | |
| 60 static gboolean webkitAccessibleValueSetCurrentValue(AtkValue* value, const GVal
ue* gValue) | |
| 61 { | |
| 62 double newValue; | |
| 63 if (G_VALUE_HOLDS_DOUBLE(gValue)) | |
| 64 newValue = g_value_get_double(gValue); | |
| 65 else if (G_VALUE_HOLDS_FLOAT(gValue)) | |
| 66 newValue = g_value_get_float(gValue); | |
| 67 else if (G_VALUE_HOLDS_INT64(gValue)) | |
| 68 newValue = g_value_get_int64(gValue); | |
| 69 else if (G_VALUE_HOLDS_INT(gValue)) | |
| 70 newValue = g_value_get_int(gValue); | |
| 71 else if (G_VALUE_HOLDS_LONG(gValue)) | |
| 72 newValue = g_value_get_long(gValue); | |
| 73 else if (G_VALUE_HOLDS_ULONG(gValue)) | |
| 74 newValue = g_value_get_ulong(gValue); | |
| 75 else if (G_VALUE_HOLDS_UINT64(gValue)) | |
| 76 newValue = g_value_get_uint64(gValue); | |
| 77 else if (G_VALUE_HOLDS_UINT(gValue)) | |
| 78 newValue = g_value_get_uint(gValue); | |
| 79 else | |
| 80 return false; | |
| 81 | |
| 82 AccessibilityObject* coreObject = core(value); | |
| 83 if (!coreObject->canSetValueAttribute()) | |
| 84 return FALSE; | |
| 85 | |
| 86 // Check value against range limits | |
| 87 newValue = std::max(static_cast<double>(coreObject->minValueForRange()), new
Value); | |
| 88 newValue = std::min(static_cast<double>(coreObject->maxValueForRange()), new
Value); | |
| 89 | |
| 90 coreObject->setValue(String::number(newValue)); | |
| 91 return TRUE; | |
| 92 } | |
| 93 | |
| 94 static void webkitAccessibleValueGetMinimumIncrement(AtkValue* value, GValue* gV
alue) | |
| 95 { | |
| 96 memset(gValue, 0, sizeof(GValue)); | |
| 97 g_value_init(gValue, G_TYPE_FLOAT); | |
| 98 | |
| 99 AccessibilityObject* coreObject = core(value); | |
| 100 if (!coreObject->getAttribute(HTMLNames::stepAttr).isEmpty()) { | |
| 101 g_value_set_float(gValue, coreObject->stepValueForRange()); | |
| 102 return; | |
| 103 } | |
| 104 | |
| 105 // If 'step' attribute is not defined, WebCore assumes a 5% of the | |
| 106 // range between minimum and maximum values, so return that. | |
| 107 float range = coreObject->maxValueForRange() - coreObject->minValueForRange(
); | |
| 108 g_value_set_float(gValue, range * 0.05); | |
| 109 } | |
| 110 | |
| 111 void webkitAccessibleValueInterfaceInit(AtkValueIface* iface) | |
| 112 { | |
| 113 iface->get_current_value = webkitAccessibleValueGetCurrentValue; | |
| 114 iface->get_maximum_value = webkitAccessibleValueGetMaximumValue; | |
| 115 iface->get_minimum_value = webkitAccessibleValueGetMinimumValue; | |
| 116 iface->set_current_value = webkitAccessibleValueSetCurrentValue; | |
| 117 iface->get_minimum_increment = webkitAccessibleValueGetMinimumIncrement; | |
| 118 } | |
| 119 | |
| 120 #endif | |
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Chromium Code Reviews
Issue 13726025:
Remove GTK AX support, we've never used it (Closed)
Base URL: svn://svn.chromium.org/blink/trunk