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| 1 /* | |
| 2 * Copyright (C) 2013 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 #include "config.h" | |
| 32 #include "core/platform/ScrollbarThemeMacOverlayAPI.h" | |
| 33 | |
| 34 #include "core/platform/graphics/GraphicsContext.h" | |
| 35 #include "core/platform/graphics/GraphicsContextStateSaver.h" | |
| 36 #include "core/platform/mac/LocalCurrentGraphicsContext.h" | |
| 37 #include "core/platform/mac/NSScrollerImpDetails.h" | |
| 38 #include "platform/scroll/ScrollbarThemeClient.h" | |
| 39 | |
| 40 namespace WebCore { | |
| 41 | |
| 42 typedef HashMap<ScrollbarThemeClient*, RetainPtr<ScrollbarPainter> > ScrollbarPa
interMap; | |
| 43 | |
| 44 static ScrollbarPainterMap* scrollbarPainterMap() | |
| 45 { | |
| 46 static ScrollbarPainterMap* map = new ScrollbarPainterMap; | |
| 47 return map; | |
| 48 } | |
| 49 | |
| 50 static bool supportsExpandedScrollbars() | |
| 51 { | |
| 52 // FIXME: This is temporary until all platforms that support ScrollbarPainte
r support this part of the API. | |
| 53 static bool globalSupportsExpandedScrollbars = [NSClassFromString(@"NSScroll
erImp") instancesRespondToSelector:@selector(setExpanded:)]; | |
| 54 return globalSupportsExpandedScrollbars; | |
| 55 } | |
| 56 | |
| 57 void ScrollbarThemeMacOverlayAPI::registerScrollbar(ScrollbarThemeClient* scroll
bar) | |
| 58 { | |
| 59 ScrollbarThemeMacCommon::registerScrollbar(scrollbar); | |
| 60 | |
| 61 bool isHorizontal = scrollbar->orientation() == HorizontalScrollbar; | |
| 62 ScrollbarPainter scrollbarPainter = [NSClassFromString(@"NSScrollerImp") scr
ollerImpWithStyle:recommendedScrollerStyle() controlSize:(NSControlSize)scrollba
r->controlSize() horizontal:isHorizontal replacingScrollerImp:nil]; | |
| 63 scrollbarPainterMap()->add(scrollbar, scrollbarPainter); | |
| 64 updateEnabledState(scrollbar); | |
| 65 updateScrollbarOverlayStyle(scrollbar); | |
| 66 } | |
| 67 | |
| 68 void ScrollbarThemeMacOverlayAPI::unregisterScrollbar(ScrollbarThemeClient* scro
llbar) | |
| 69 { | |
| 70 scrollbarPainterMap()->remove(scrollbar); | |
| 71 | |
| 72 ScrollbarThemeMacCommon::unregisterScrollbar(scrollbar); | |
| 73 } | |
| 74 | |
| 75 void ScrollbarThemeMacOverlayAPI::setNewPainterForScrollbar(ScrollbarThemeClient
* scrollbar, ScrollbarPainter newPainter) | |
| 76 { | |
| 77 scrollbarPainterMap()->set(scrollbar, newPainter); | |
| 78 updateEnabledState(scrollbar); | |
| 79 updateScrollbarOverlayStyle(scrollbar); | |
| 80 } | |
| 81 | |
| 82 ScrollbarPainter ScrollbarThemeMacOverlayAPI::painterForScrollbar(ScrollbarTheme
Client* scrollbar) | |
| 83 { | |
| 84 return scrollbarPainterMap()->get(scrollbar).get(); | |
| 85 } | |
| 86 | |
| 87 void ScrollbarThemeMacOverlayAPI::paintTrackBackground(GraphicsContext* context,
ScrollbarThemeClient* scrollbar, const IntRect& rect) { | |
| 88 ASSERT(isScrollbarOverlayAPIAvailable()); | |
| 89 | |
| 90 GraphicsContextStateSaver stateSaver(*context); | |
| 91 context->translate(rect.x(), rect.y()); | |
| 92 LocalCurrentGraphicsContext localContext(context); | |
| 93 | |
| 94 CGRect frameRect = scrollbar->frameRect(); | |
| 95 ScrollbarPainter scrollbarPainter = painterForScrollbar(scrollbar); | |
| 96 [scrollbarPainter setEnabled:scrollbar->enabled()]; | |
| 97 [scrollbarPainter setBoundsSize: NSSizeFromCGSize(frameRect.size)]; | |
| 98 | |
| 99 NSRect trackRect = NSMakeRect(0, 0, frameRect.size.width, frameRect.size.hei
ght); | |
| 100 [scrollbarPainter drawKnobSlotInRect:trackRect highlight:NO]; | |
| 101 } | |
| 102 | |
| 103 void ScrollbarThemeMacOverlayAPI::paintThumb(GraphicsContext* context, Scrollbar
ThemeClient* scrollbar, const IntRect& rect) { | |
| 104 ASSERT(isScrollbarOverlayAPIAvailable()); | |
| 105 | |
| 106 GraphicsContextStateSaver stateSaver(*context); | |
| 107 context->translate(rect.x(), rect.y()); | |
| 108 LocalCurrentGraphicsContext localContext(context); | |
| 109 | |
| 110 ScrollbarPainter scrollbarPainter = painterForScrollbar(scrollbar); | |
| 111 [scrollbarPainter setEnabled:scrollbar->enabled()]; | |
| 112 [scrollbarPainter setBoundsSize:NSSizeFromCGSize(rect.size())]; | |
| 113 [scrollbarPainter setDoubleValue:0]; | |
| 114 [scrollbarPainter setKnobProportion:1]; | |
| 115 if (scrollbar->enabled()) | |
| 116 [scrollbarPainter drawKnob]; | |
| 117 | |
| 118 // If this state is not set, then moving the cursor over the scrollbar area
will only cause the | |
| 119 // scrollbar to engorge when moved over the top of the scrollbar area. | |
| 120 [scrollbarPainter setBoundsSize: NSSizeFromCGSize(scrollbar->frameRect().siz
e())]; | |
| 121 } | |
| 122 | |
| 123 int ScrollbarThemeMacOverlayAPI::scrollbarThickness(ScrollbarControlSize control
Size) | |
| 124 { | |
| 125 ScrollbarPainter scrollbarPainter = [NSClassFromString(@"NSScrollerImp") scr
ollerImpWithStyle:recommendedScrollerStyle() controlSize:controlSize horizontal:
NO replacingScrollerImp:nil]; | |
| 126 if (supportsExpandedScrollbars()) | |
| 127 [scrollbarPainter setExpanded:YES]; | |
| 128 return [scrollbarPainter trackBoxWidth]; | |
| 129 } | |
| 130 | |
| 131 bool ScrollbarThemeMacOverlayAPI::usesOverlayScrollbars() const | |
| 132 { | |
| 133 return recommendedScrollerStyle() == NSScrollerStyleOverlay; | |
| 134 } | |
| 135 | |
| 136 void ScrollbarThemeMacOverlayAPI::updateScrollbarOverlayStyle(ScrollbarThemeClie
nt* scrollbar) | |
| 137 { | |
| 138 ScrollbarPainter painter = painterForScrollbar(scrollbar); | |
| 139 switch (scrollbar->scrollbarOverlayStyle()) { | |
| 140 case ScrollbarOverlayStyleDefault: | |
| 141 [painter setKnobStyle:NSScrollerKnobStyleDefault]; | |
| 142 break; | |
| 143 case ScrollbarOverlayStyleDark: | |
| 144 [painter setKnobStyle:NSScrollerKnobStyleDark]; | |
| 145 break; | |
| 146 case ScrollbarOverlayStyleLight: | |
| 147 [painter setKnobStyle:NSScrollerKnobStyleLight]; | |
| 148 break; | |
| 149 } | |
| 150 } | |
| 151 | |
| 152 ScrollbarButtonsPlacement ScrollbarThemeMacOverlayAPI::buttonsPlacement() const | |
| 153 { | |
| 154 return ScrollbarButtonsNone; | |
| 155 } | |
| 156 | |
| 157 bool ScrollbarThemeMacOverlayAPI::hasThumb(ScrollbarThemeClient* scrollbar) | |
| 158 { | |
| 159 ScrollbarPainter painter = painterForScrollbar(scrollbar); | |
| 160 int minLengthForThumb = [painter knobMinLength] + [painter trackOverlapEndIn
set] + [painter knobOverlapEndInset] | |
| 161 + 2 * ([painter trackEndInset] + [painter knobEndInset]); | |
| 162 return scrollbar->enabled() && (scrollbar->orientation() == HorizontalScroll
bar ? | |
| 163 scrollbar->width() : | |
| 164 scrollbar->height()) >= minLengthForThumb; | |
| 165 } | |
| 166 | |
| 167 IntRect ScrollbarThemeMacOverlayAPI::backButtonRect(ScrollbarThemeClient* scroll
bar, ScrollbarPart part, bool painting) | |
| 168 { | |
| 169 ASSERT(buttonsPlacement() == ScrollbarButtonsNone); | |
| 170 return IntRect(); | |
| 171 } | |
| 172 | |
| 173 IntRect ScrollbarThemeMacOverlayAPI::forwardButtonRect(ScrollbarThemeClient* scr
ollbar, ScrollbarPart part, bool painting) | |
| 174 { | |
| 175 ASSERT(buttonsPlacement() == ScrollbarButtonsNone); | |
| 176 return IntRect(); | |
| 177 } | |
| 178 | |
| 179 IntRect ScrollbarThemeMacOverlayAPI::trackRect(ScrollbarThemeClient* scrollbar,
bool painting) | |
| 180 { | |
| 181 ASSERT(!hasButtons(scrollbar)); | |
| 182 return scrollbar->frameRect(); | |
| 183 } | |
| 184 | |
| 185 int ScrollbarThemeMacOverlayAPI::minimumThumbLength(ScrollbarThemeClient* scroll
bar) | |
| 186 { | |
| 187 return [painterForScrollbar(scrollbar) knobMinLength]; | |
| 188 } | |
| 189 | |
| 190 void ScrollbarThemeMacOverlayAPI::updateEnabledState(ScrollbarThemeClient* scrol
lbar) | |
| 191 { | |
| 192 [painterForScrollbar(scrollbar) setEnabled:scrollbar->enabled()]; | |
| 193 } | |
| 194 | |
| 195 } // 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