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| 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 "core/platform/ScrollbarThemeWin.h" | |
| 29 | |
| 30 #include <windows.h> | |
| 31 #include <vsstyle.h> | |
| 32 | |
| 33 #include "core/platform/graphics/GraphicsContext.h" | |
| 34 #include "platform/LayoutTestSupport.h" | |
| 35 #include "platform/PlatformMouseEvent.h" | |
| 36 #include "platform/scroll/ScrollbarThemeClient.h" | |
| 37 #include "platform/win/SystemInfo.h" | |
| 38 #include "public/platform/Platform.h" | |
| 39 #include "public/platform/WebRect.h" | |
| 40 #include "public/platform/win/WebThemeEngine.h" | |
| 41 | |
| 42 namespace WebCore { | |
| 43 | |
| 44 ScrollbarTheme* ScrollbarTheme::nativeTheme() | |
| 45 { | |
| 46 static ScrollbarThemeWin theme; | |
| 47 return &theme; | |
| 48 } | |
| 49 | |
| 50 // The scrollbar size in DumpRenderTree on the Mac - so we can match their | |
| 51 // layout results. Entries are for regular, small, and mini scrollbars. | |
| 52 // Metrics obtained using [NSScroller scrollerWidthForControlSize:] | |
| 53 static const int kMacScrollbarSize[3] = { 15, 11, 15 }; | |
| 54 | |
| 55 // Constants used to figure the drag rect outside which we should snap the | |
| 56 // scrollbar thumb back to its origin. These calculations are based on | |
| 57 // observing the behavior of the MSVC8 main window scrollbar + some | |
| 58 // guessing/extrapolation. | |
| 59 static const int kOffEndMultiplier = 3; | |
| 60 static const int kOffSideMultiplier = 8; | |
| 61 | |
| 62 int ScrollbarThemeWin::scrollbarThickness(ScrollbarControlSize controlSize) | |
| 63 { | |
| 64 static int thickness; | |
| 65 if (!thickness) { | |
| 66 if (isRunningLayoutTest()) | |
| 67 return kMacScrollbarSize[controlSize]; | |
| 68 thickness = IntSize(blink::Platform::current()->themeEngine()->getSize(S
BP_ARROWBTN)).width(); | |
| 69 } | |
| 70 return thickness; | |
| 71 } | |
| 72 | |
| 73 bool ScrollbarThemeWin::invalidateOnMouseEnterExit() | |
| 74 { | |
| 75 return isWindowsVistaOrGreater(); | |
| 76 } | |
| 77 | |
| 78 bool ScrollbarThemeWin::shouldSnapBackToDragOrigin(ScrollbarThemeClient* scrollb
ar, const PlatformMouseEvent& evt) | |
| 79 { | |
| 80 // Find the rect within which we shouldn't snap, by expanding the track rect | |
| 81 // in both dimensions. | |
| 82 IntRect rect = trackRect(scrollbar); | |
| 83 const bool horz = scrollbar->orientation() == HorizontalScrollbar; | |
| 84 const int thickness = scrollbarThickness(scrollbar->controlSize()); | |
| 85 rect.inflateX((horz ? kOffEndMultiplier : kOffSideMultiplier) * thickness); | |
| 86 rect.inflateY((horz ? kOffSideMultiplier : kOffEndMultiplier) * thickness); | |
| 87 | |
| 88 // Convert the event to local coordinates. | |
| 89 IntPoint mousePosition = scrollbar->convertFromContainingWindow(evt.position
()); | |
| 90 mousePosition.move(scrollbar->x(), scrollbar->y()); | |
| 91 | |
| 92 // We should snap iff the event is outside our calculated rect. | |
| 93 return !rect.contains(mousePosition); | |
| 94 } | |
| 95 | |
| 96 void ScrollbarThemeWin::paintTrackPiece(GraphicsContext* gc, ScrollbarThemeClien
t* scrollbar, const IntRect& rect, ScrollbarPart partType) | |
| 97 { | |
| 98 bool horz = scrollbar->orientation() == HorizontalScrollbar; | |
| 99 | |
| 100 int partId; | |
| 101 if (partType == BackTrackPart) | |
| 102 partId = horz ? SBP_UPPERTRACKHORZ : SBP_UPPERTRACKVERT; | |
| 103 else | |
| 104 partId = horz ? SBP_LOWERTRACKHORZ : SBP_LOWERTRACKVERT; | |
| 105 | |
| 106 IntRect alignRect = trackRect(scrollbar, false); | |
| 107 | |
| 108 blink::WebCanvas* canvas = gc->canvas(); | |
| 109 // Draw the track area before/after the thumb on the scroll bar. | |
| 110 blink::Platform::current()->themeEngine()->paintScrollbarTrack(canvas, partI
d, getThemeState(scrollbar, partType), getClassicThemeState(scrollbar, partType)
, blink::WebRect(rect), blink::WebRect(alignRect)); | |
| 111 } | |
| 112 | |
| 113 void ScrollbarThemeWin::paintButton(GraphicsContext* gc, ScrollbarThemeClient* s
crollbar, const IntRect& rect, ScrollbarPart part) | |
| 114 { | |
| 115 bool horz = scrollbar->orientation() == HorizontalScrollbar; | |
| 116 | |
| 117 int partId; | |
| 118 if (part == BackButtonStartPart || part == ForwardButtonStartPart) | |
| 119 partId = horz ? DFCS_SCROLLLEFT : DFCS_SCROLLUP; | |
| 120 else | |
| 121 partId = horz ? DFCS_SCROLLRIGHT : DFCS_SCROLLDOWN; | |
| 122 | |
| 123 blink::WebCanvas* canvas = gc->canvas(); | |
| 124 // Draw the thumb (the box you drag in the scroll bar to scroll). | |
| 125 blink::Platform::current()->themeEngine()->paintScrollbarArrow(canvas, getTh
emeArrowState(scrollbar, part), partId | getClassicThemeState(scrollbar, part),
blink::WebRect(rect)); | |
| 126 } | |
| 127 | |
| 128 void ScrollbarThemeWin::paintThumb(GraphicsContext* gc, ScrollbarThemeClient* sc
rollbar, const IntRect& rect) | |
| 129 { | |
| 130 bool horz = scrollbar->orientation() == HorizontalScrollbar; | |
| 131 | |
| 132 blink::WebCanvas* canvas = gc->canvas(); | |
| 133 // Draw the thumb (the box you drag in the scroll bar to scroll). | |
| 134 blink::Platform::current()->themeEngine()->paintScrollbarThumb(canvas, horz
? SBP_THUMBBTNHORZ : SBP_THUMBBTNVERT, getThemeState(scrollbar, ThumbPart), getC
lassicThemeState(scrollbar, ThumbPart), blink::WebRect(rect)); | |
| 135 | |
| 136 // Draw the gripper (the three little lines on the thumb). | |
| 137 blink::Platform::current()->themeEngine()->paintScrollbarThumb(canvas, horz
? SBP_GRIPPERHORZ : SBP_GRIPPERVERT, getThemeState(scrollbar, ThumbPart), getCla
ssicThemeState(scrollbar, ThumbPart), blink::WebRect(rect)); | |
| 138 } | |
| 139 | |
| 140 int ScrollbarThemeWin::getThemeState(ScrollbarThemeClient* scrollbar, ScrollbarP
art part) const | |
| 141 { | |
| 142 // When dragging the thumb, draw thumb pressed and other segments normal | |
| 143 // regardless of where the cursor actually is. See also four places in | |
| 144 // getThemeArrowState(). | |
| 145 if (scrollbar->pressedPart() == ThumbPart) { | |
| 146 if (part == ThumbPart) | |
| 147 return SCRBS_PRESSED; | |
| 148 return isWindowsVistaOrGreater() ? SCRBS_HOVER : SCRBS_NORMAL; | |
| 149 } | |
| 150 if (!scrollbar->enabled()) | |
| 151 return SCRBS_DISABLED; | |
| 152 if (scrollbar->hoveredPart() != part || part == BackTrackPart || part == For
wardTrackPart) | |
| 153 return (scrollbar->hoveredPart() == NoPart || !isWindowsVistaOrGreater()
) ? SCRBS_NORMAL : SCRBS_HOVER; | |
| 154 if (scrollbar->pressedPart() == NoPart) | |
| 155 return SCRBS_HOT; | |
| 156 return (scrollbar->pressedPart() == part) ? SCRBS_PRESSED : SCRBS_NORMAL; | |
| 157 } | |
| 158 | |
| 159 int ScrollbarThemeWin::getThemeArrowState(ScrollbarThemeClient* scrollbar, Scrol
lbarPart part) const | |
| 160 { | |
| 161 // We could take advantage of knowing the values in the state enum to write | |
| 162 // some simpler code, but treating the state enum as a black box seems | |
| 163 // clearer and more future-proof. | |
| 164 if (part == BackButtonStartPart || part == ForwardButtonStartPart) { | |
| 165 if (scrollbar->orientation() == HorizontalScrollbar) { | |
| 166 if (scrollbar->pressedPart() == ThumbPart) | |
| 167 return isWindowsVistaOrGreater() ? ABS_LEFTHOVER : ABS_LEFTNORMA
L; | |
| 168 if (!scrollbar->enabled()) | |
| 169 return ABS_LEFTDISABLED; | |
| 170 if (scrollbar->hoveredPart() != part) | |
| 171 return ((scrollbar->hoveredPart() == NoPart) || !isWindowsVistaO
rGreater()) ? ABS_LEFTNORMAL : ABS_LEFTHOVER; | |
| 172 if (scrollbar->pressedPart() == NoPart) | |
| 173 return ABS_LEFTHOT; | |
| 174 return (scrollbar->pressedPart() == part) ? | |
| 175 ABS_LEFTPRESSED : ABS_LEFTNORMAL; | |
| 176 } | |
| 177 if (scrollbar->pressedPart() == ThumbPart) | |
| 178 return isWindowsVistaOrGreater() ? ABS_UPHOVER : ABS_UPNORMAL; | |
| 179 if (!scrollbar->enabled()) | |
| 180 return ABS_UPDISABLED; | |
| 181 if (scrollbar->hoveredPart() != part) | |
| 182 return ((scrollbar->hoveredPart() == NoPart) || !isWindowsVistaOrGre
ater()) ? ABS_UPNORMAL : ABS_UPHOVER; | |
| 183 if (scrollbar->pressedPart() == NoPart) | |
| 184 return ABS_UPHOT; | |
| 185 return (scrollbar->pressedPart() == part) ? ABS_UPPRESSED : ABS_UPNORMAL
; | |
| 186 } | |
| 187 if (scrollbar->orientation() == HorizontalScrollbar) { | |
| 188 if (scrollbar->pressedPart() == ThumbPart) | |
| 189 return isWindowsVistaOrGreater() ? ABS_RIGHTHOVER : ABS_RIGHTNORMAL; | |
| 190 if (!scrollbar->enabled()) | |
| 191 return ABS_RIGHTDISABLED; | |
| 192 if (scrollbar->hoveredPart() != part) | |
| 193 return ((scrollbar->hoveredPart() == NoPart) || !isWindowsVistaOrGre
ater()) ? ABS_RIGHTNORMAL : ABS_RIGHTHOVER; | |
| 194 if (scrollbar->pressedPart() == NoPart) | |
| 195 return ABS_RIGHTHOT; | |
| 196 return (scrollbar->pressedPart() == part) ? ABS_RIGHTPRESSED : ABS_RIGHT
NORMAL; | |
| 197 } | |
| 198 if (scrollbar->pressedPart() == ThumbPart) | |
| 199 return isWindowsVistaOrGreater() ? ABS_DOWNHOVER : ABS_DOWNNORMAL; | |
| 200 if (!scrollbar->enabled()) | |
| 201 return ABS_DOWNDISABLED; | |
| 202 if (scrollbar->hoveredPart() != part) | |
| 203 return ((scrollbar->hoveredPart() == NoPart) || !isWindowsVistaOrGreater
()) ? ABS_DOWNNORMAL : ABS_DOWNHOVER; | |
| 204 if (scrollbar->pressedPart() == NoPart) | |
| 205 return ABS_DOWNHOT; | |
| 206 return (scrollbar->pressedPart() == part) ? ABS_DOWNPRESSED : ABS_DOWNNORMAL
; | |
| 207 } | |
| 208 | |
| 209 int ScrollbarThemeWin::getClassicThemeState(ScrollbarThemeClient* scrollbar, Scr
ollbarPart part) const | |
| 210 { | |
| 211 // When dragging the thumb, draw the buttons normal even when hovered. | |
| 212 if (scrollbar->pressedPart() == ThumbPart) | |
| 213 return 0; | |
| 214 if (!scrollbar->enabled()) | |
| 215 return DFCS_INACTIVE; | |
| 216 if (scrollbar->hoveredPart() != part || part == BackTrackPart || part == For
wardTrackPart) | |
| 217 return 0; | |
| 218 if (scrollbar->pressedPart() == NoPart) | |
| 219 return DFCS_HOT; | |
| 220 return (scrollbar->pressedPart() == part) ? (DFCS_PUSHED | DFCS_FLAT) : 0; | |
| 221 } | |
| 222 | |
| 223 bool ScrollbarThemeWin::shouldCenterOnThumb(ScrollbarThemeClient*, const Platfor
mMouseEvent& evt) | |
| 224 { | |
| 225 return evt.shiftKey() && evt.button() == LeftButton; | |
| 226 } | |
| 227 | |
| 228 IntSize ScrollbarThemeWin::buttonSize(ScrollbarThemeClient* scrollbar) | |
| 229 { | |
| 230 // Our desired rect is essentially thickness by thickness. | |
| 231 | |
| 232 // Our actual rect will shrink to half the available space when we have < 2 | |
| 233 // times thickness pixels left. This allows the scrollbar to scale down | |
| 234 // and function even at tiny sizes. | |
| 235 | |
| 236 int thickness = scrollbarThickness(scrollbar->controlSize()); | |
| 237 | |
| 238 // In layout test mode, we force the button "girth" (i.e., the length of | |
| 239 // the button along the axis of the scrollbar) to be a fixed size. | |
| 240 // FIXME: This is retarded! scrollbarThickness is already fixed in layout | |
| 241 // test mode so that should be enough to result in repeatable results, but | |
| 242 // preserving this hack avoids having to rebaseline pixel tests. | |
| 243 const int kLayoutTestModeGirth = 17; | |
| 244 int girth = isRunningLayoutTest() ? kLayoutTestModeGirth : thickness; | |
| 245 | |
| 246 if (scrollbar->orientation() == HorizontalScrollbar) { | |
| 247 int width = scrollbar->width() < 2 * girth ? scrollbar->width() / 2 : gi
rth; | |
| 248 return IntSize(width, thickness); | |
| 249 } | |
| 250 | |
| 251 int height = scrollbar->height() < 2 * girth ? scrollbar->height() / 2 : gir
th; | |
| 252 return IntSize(thickness, height); | |
| 253 } | |
| 254 | |
| 255 | |
| 256 } // namespace WebCore | |
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Chromium Code Reviews
Issue 99103006:
Moving GraphicsContext and dependencies from core to platform. (Closed)
Base URL: svn://svn.chromium.org/blink/trunk