1 /*
2 * Copyright (C) 2008 Apple Inc. All Rights Reserved.
3 * Copyright (C) 2008, 2009 Google Inc.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27 #include "config.h"
28 #include "ScrollbarThemeChromium.h"
29
30 #include <windows.h>
31 #include <vsstyle.h>
32
33 #include "ChromiumBridge.h"
34 #include "GraphicsContext.h"
35 #include "PlatformContextSkia.h"
36 #include "PlatformMouseEvent.h"
37 #include "Scrollbar.h"
38 #include "WindowsVersion.h"
39
40 namespace WebCore {
41
42 // The scrollbar size in DumpRenderTree on the Mac - so we can match their
43 // layout results. Entries are for regular, small, and mini scrollbars.
44 // Metrics obtained using [NSScroller scrollerWidthForControlSize:]
45 static const int kMacScrollbarSize[3] = { 15, 11, 15 };
46
scrollbarThickness(ScrollbarControlSize controlSize)47 int ScrollbarThemeChromium::scrollbarThickness(ScrollbarControlSize controlSize)
48 {
49 static int thickness;
50 if (!thickness) {
51 if (ChromiumBridge::layoutTestMode())
52 return kMacScrollbarSize[controlSize];
53 thickness = GetSystemMetrics(SM_CXVSCROLL);
54 }
55 return thickness;
56 }
57
invalidateOnMouseEnterExit()58 bool ScrollbarThemeChromium::invalidateOnMouseEnterExit()
59 {
60 return isVistaOrNewer();
61 }
62
paintTrackPiece(GraphicsContext * gc,Scrollbar * scrollbar,const IntRect & rect,ScrollbarPart partType)63 void ScrollbarThemeChromium::paintTrackPiece(GraphicsContext* gc, Scrollbar* scrollbar, const IntRect& rect, ScrollbarPart partType)
64 {
65 bool horz = scrollbar->orientation() == HorizontalScrollbar;
66
67 int partId;
68 if (partType == BackTrackPart)
69 partId = horz ? SBP_UPPERTRACKHORZ : SBP_UPPERTRACKVERT;
70 else
71 partId = horz ? SBP_LOWERTRACKHORZ : SBP_LOWERTRACKVERT;
72
73 IntRect alignRect = trackRect(scrollbar, false);
74
75 // Draw the track area before/after the thumb on the scroll bar.
76 ChromiumBridge::paintScrollbarTrack(
77 gc,
78 partId,
79 getThemeState(scrollbar, partType),
80 getClassicThemeState(scrollbar, partType),
81 rect,
82 alignRect);
83 }
84
paintButton(GraphicsContext * gc,Scrollbar * scrollbar,const IntRect & rect,ScrollbarPart part)85 void ScrollbarThemeChromium::paintButton(GraphicsContext* gc, Scrollbar* scrollbar, const IntRect& rect, ScrollbarPart part)
86 {
87 bool horz = scrollbar->orientation() == HorizontalScrollbar;
88
89 int partId;
90 if (part == BackButtonStartPart || part == ForwardButtonStartPart)
91 partId = horz ? DFCS_SCROLLLEFT : DFCS_SCROLLUP;
92 else
93 partId = horz ? DFCS_SCROLLRIGHT : DFCS_SCROLLDOWN;
94
95 // Draw the thumb (the box you drag in the scroll bar to scroll).
96 ChromiumBridge::paintScrollbarArrow(
97 gc,
98 getThemeArrowState(scrollbar, part),
99 partId | getClassicThemeState(scrollbar, part),
100 rect);
101 }
102
paintThumb(GraphicsContext * gc,Scrollbar * scrollbar,const IntRect & rect)103 void ScrollbarThemeChromium::paintThumb(GraphicsContext* gc, Scrollbar* scrollbar, const IntRect& rect)
104 {
105 bool horz = scrollbar->orientation() == HorizontalScrollbar;
106
107 // Draw the thumb (the box you drag in the scroll bar to scroll).
108 ChromiumBridge::paintScrollbarThumb(
109 gc,
110 horz ? SBP_THUMBBTNHORZ : SBP_THUMBBTNVERT,
111 getThemeState(scrollbar, ThumbPart),
112 getClassicThemeState(scrollbar, ThumbPart),
113 rect);
114
115 // Draw the gripper (the three little lines on the thumb).
116 ChromiumBridge::paintScrollbarThumb(
117 gc,
118 horz ? SBP_GRIPPERHORZ : SBP_GRIPPERVERT,
119 getThemeState(scrollbar, ThumbPart),
120 getClassicThemeState(scrollbar, ThumbPart),
121 rect);
122 }
123
getThemeState(Scrollbar * scrollbar,ScrollbarPart part) const124 int ScrollbarThemeChromium::getThemeState(Scrollbar* scrollbar, ScrollbarPart part) const
125 {
126 // When dragging the thumb, draw thumb pressed and other segments normal
127 // regardless of where the cursor actually is. See also four places in
128 // getThemeArrowState().
129 if (scrollbar->pressedPart() == ThumbPart) {
130 if (part == ThumbPart)
131 return SCRBS_PRESSED;
132 return isVistaOrNewer() ? SCRBS_HOVER : SCRBS_NORMAL;
133 }
134 if (!scrollbar->enabled())
135 return SCRBS_DISABLED;
136 if (scrollbar->hoveredPart() != part || part == BackTrackPart || part == ForwardTrackPart)
137 return (scrollbar->hoveredPart() == NoPart || !isVistaOrNewer()) ? SCRBS_NORMAL : SCRBS_HOVER;
138 if (scrollbar->pressedPart() == NoPart)
139 return SCRBS_HOT;
140 return (scrollbar->pressedPart() == part) ? SCRBS_PRESSED : SCRBS_NORMAL;
141 }
142
getThemeArrowState(Scrollbar * scrollbar,ScrollbarPart part) const143 int ScrollbarThemeChromium::getThemeArrowState(Scrollbar* scrollbar, ScrollbarPart part) const
144 {
145 // We could take advantage of knowing the values in the state enum to write
146 // some simpler code, but treating the state enum as a black box seems
147 // clearer and more future-proof.
148 if (part == BackButtonStartPart || part == ForwardButtonStartPart) {
149 if (scrollbar->orientation() == HorizontalScrollbar) {
150 if (scrollbar->pressedPart() == ThumbPart)
151 return !isVistaOrNewer() ? ABS_LEFTNORMAL : ABS_LEFTHOVER;
152 if (!scrollbar->enabled())
153 return ABS_LEFTDISABLED;
154 if (scrollbar->hoveredPart() != part)
155 return ((scrollbar->hoveredPart() == NoPart) || !isVistaOrNewer()) ? ABS_LEFTNORMAL : ABS_LEFTHOVER;
156 if (scrollbar->pressedPart() == NoPart)
157 return ABS_LEFTHOT;
158 return (scrollbar->pressedPart() == part) ?
159 ABS_LEFTPRESSED : ABS_LEFTNORMAL;
160 }
161 if (scrollbar->pressedPart() == ThumbPart)
162 return !isVistaOrNewer() ? ABS_UPNORMAL : ABS_UPHOVER;
163 if (!scrollbar->enabled())
164 return ABS_UPDISABLED;
165 if (scrollbar->hoveredPart() != part)
166 return ((scrollbar->hoveredPart() == NoPart) || !isVistaOrNewer()) ? ABS_UPNORMAL : ABS_UPHOVER;
167 if (scrollbar->pressedPart() == NoPart)
168 return ABS_UPHOT;
169 return (scrollbar->pressedPart() == part) ? ABS_UPPRESSED : ABS_UPNORMAL;
170 }
171 if (scrollbar->orientation() == HorizontalScrollbar) {
172 if (scrollbar->pressedPart() == ThumbPart)
173 return !isVistaOrNewer() ? ABS_RIGHTNORMAL : ABS_RIGHTHOVER;
174 if (!scrollbar->enabled())
175 return ABS_RIGHTDISABLED;
176 if (scrollbar->hoveredPart() != part)
177 return ((scrollbar->hoveredPart() == NoPart) || !isVistaOrNewer()) ? ABS_RIGHTNORMAL : ABS_RIGHTHOVER;
178 if (scrollbar->pressedPart() == NoPart)
179 return ABS_RIGHTHOT;
180 return (scrollbar->pressedPart() == part) ? ABS_RIGHTPRESSED : ABS_RIGHTNORMAL;
181 }
182 if (scrollbar->pressedPart() == ThumbPart)
183 return !isVistaOrNewer() ? ABS_DOWNNORMAL : ABS_DOWNHOVER;
184 if (!scrollbar->enabled())
185 return ABS_DOWNDISABLED;
186 if (scrollbar->hoveredPart() != part)
187 return ((scrollbar->hoveredPart() == NoPart) || !isVistaOrNewer()) ? ABS_DOWNNORMAL : ABS_DOWNHOVER;
188 if (scrollbar->pressedPart() == NoPart)
189 return ABS_DOWNHOT;
190 return (scrollbar->pressedPart() == part) ? ABS_DOWNPRESSED : ABS_DOWNNORMAL;
191 }
192
getClassicThemeState(Scrollbar * scrollbar,ScrollbarPart part) const193 int ScrollbarThemeChromium::getClassicThemeState(Scrollbar* scrollbar, ScrollbarPart part) const
194 {
195 // When dragging the thumb, draw the buttons normal even when hovered.
196 if (scrollbar->pressedPart() == ThumbPart)
197 return 0;
198 if (!scrollbar->enabled())
199 return DFCS_INACTIVE;
200 if (scrollbar->hoveredPart() != part || part == BackTrackPart || part == ForwardTrackPart)
201 return 0;
202 if (scrollbar->pressedPart() == NoPart)
203 return DFCS_HOT;
204 return (scrollbar->pressedPart() == part) ? (DFCS_PUSHED | DFCS_FLAT) : 0;
205 }
206
207 } // namespace WebCore
208