1 /* 2 * Copyright (C) 2010 Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef WebThemeEngine_h 32 #define WebThemeEngine_h 33 34 #include "WebCanvas.h" 35 #include "WebColor.h" 36 #include "WebSize.h" 37 38 namespace blink { 39 40 struct WebRect; 41 42 // FIXME: crbug.com/327471. We need to merge the Apple and non-Apple implementations. 43 44 class WebThemeEngine { 45 public: 46 // The current state of the associated Part. 47 enum State { 48 StateDisabled, 49 StateHover, // non-Apple 50 StateNormal, // non-Apple 51 StatePressed, 52 StateFocused, // non-Apple 53 StateReadonly, // non-Apple 54 StateInactive, // Apple-specific 55 StateActive, // Apple-specific 56 }; 57 58 // FIXME: The next section describes stuff only used on the Apple port. 59 enum Size { 60 SizeRegular, 61 SizeSmall, 62 }; 63 64 enum ScrollbarOrientation { 65 ScrollbarOrientationHorizontal, 66 ScrollbarOrientationVertical, 67 }; 68 69 enum ScrollbarParent { 70 ScrollbarParentScrollView, 71 ScrollbarParentRenderLayer, 72 }; 73 74 struct ScrollbarInfo { 75 ScrollbarOrientation orientation; 76 ScrollbarParent parent; 77 int maxValue; 78 int currentValue; 79 int visibleSize; 80 int totalSize; 81 }; 82 paintScrollbarThumb(WebCanvas *,State,Size,const WebRect &,const ScrollbarInfo &)83 virtual void paintScrollbarThumb(WebCanvas*, State, Size, const WebRect&, const ScrollbarInfo&) { } 84 85 // FIXME: The remaining definitions are only used on the non-Apple ports. 86 87 // The UI part which is being accessed. 88 enum Part { 89 // ScrollbarTheme parts 90 PartScrollbarDownArrow, 91 PartScrollbarLeftArrow, 92 PartScrollbarRightArrow, 93 PartScrollbarUpArrow, 94 PartScrollbarHorizontalThumb, 95 PartScrollbarVerticalThumb, 96 PartScrollbarHorizontalTrack, 97 PartScrollbarVerticalTrack, 98 PartScrollbarCorner, 99 100 // RenderTheme parts 101 PartCheckbox, 102 PartRadio, 103 PartButton, 104 PartTextField, 105 PartMenuList, 106 PartSliderTrack, 107 PartSliderThumb, 108 PartInnerSpinButton, 109 PartProgressBar 110 }; 111 112 113 // Extra parameters for drawing the PartScrollbarHorizontalTrack and 114 // PartScrollbarVerticalTrack. 115 struct ScrollbarTrackExtraParams { 116 bool isBack; // Whether this is the 'back' part or the 'forward' part. 117 118 // The bounds of the entire track, as opposed to the part being painted. 119 int trackX; 120 int trackY; 121 int trackWidth; 122 int trackHeight; 123 }; 124 125 // Extra parameters for PartCheckbox, PartPushButton and PartRadio. 126 struct ButtonExtraParams { 127 bool checked; 128 bool indeterminate; // Whether the button state is indeterminate. 129 bool isDefault; // Whether the button is default button. 130 bool hasBorder; 131 WebColor backgroundColor; 132 }; 133 134 // Extra parameters for PartTextField 135 struct TextFieldExtraParams { 136 bool isTextArea; 137 bool isListbox; 138 WebColor backgroundColor; 139 }; 140 141 // Extra parameters for PartMenuList 142 struct MenuListExtraParams { 143 bool hasBorder; 144 bool hasBorderRadius; 145 int arrowX; 146 int arrowY; 147 int arrowHeight; 148 WebColor backgroundColor; 149 bool fillContentArea; 150 }; 151 152 // Extra parameters for PartSliderTrack and PartSliderThumb 153 struct SliderExtraParams { 154 bool vertical; 155 bool inDrag; 156 }; 157 158 // Extra parameters for PartInnerSpinButton 159 struct InnerSpinButtonExtraParams { 160 bool spinUp; 161 bool readOnly; 162 }; 163 164 // Extra parameters for PartProgressBar 165 struct ProgressBarExtraParams { 166 bool determinate; 167 int valueRectX; 168 int valueRectY; 169 int valueRectWidth; 170 int valueRectHeight; 171 }; 172 173 union ExtraParams { 174 ScrollbarTrackExtraParams scrollbarTrack; 175 ButtonExtraParams button; 176 TextFieldExtraParams textField; 177 MenuListExtraParams menuList; 178 SliderExtraParams slider; 179 InnerSpinButtonExtraParams innerSpin; 180 ProgressBarExtraParams progressBar; 181 }; 182 183 // Gets the size of the given theme part. For variable sized items 184 // like vertical scrollbar thumbs, the width will be the required width of 185 // the track while the height will be the minimum height. getSize(Part)186 virtual WebSize getSize(Part) { return WebSize(); } 187 // Paint the given the given theme part. paint(WebCanvas *,Part,State,const WebRect &,const ExtraParams *)188 virtual void paint(WebCanvas*, Part, State, const WebRect&, const ExtraParams*) { } 189 }; 190 191 } // namespace blink 192 193 #endif 194