| /* |
| * Copyright (C) 2008 Apple Inc. All Rights Reserved. |
| * Copyright (C) 2008, 2009 Google Inc. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "platform/scroll/ScrollbarThemeNonMacCommon.h" |
| |
| #include "platform/PlatformMouseEvent.h" |
| #include "platform/graphics/GraphicsContextStateSaver.h" |
| #include "platform/scroll/ScrollableArea.h" |
| #include "platform/scroll/ScrollbarThemeClient.h" |
| |
| namespace blink { |
| |
| bool ScrollbarThemeNonMacCommon::hasThumb(ScrollbarThemeClient* scrollbar) |
| { |
| // This method is just called as a paint-time optimization to see if |
| // painting the thumb can be skipped. We don't have to be exact here. |
| return thumbLength(scrollbar) > 0; |
| } |
| |
| IntRect ScrollbarThemeNonMacCommon::backButtonRect(ScrollbarThemeClient* scrollbar, ScrollbarPart part, bool) |
| { |
| // Windows and Linux just have single arrows. |
| if (part == BackButtonEndPart) |
| return IntRect(); |
| |
| IntSize size = buttonSize(scrollbar); |
| return IntRect(scrollbar->x(), scrollbar->y(), size.width(), size.height()); |
| } |
| |
| IntRect ScrollbarThemeNonMacCommon::forwardButtonRect(ScrollbarThemeClient* scrollbar, ScrollbarPart part, bool) |
| { |
| // Windows and Linux just have single arrows. |
| if (part == ForwardButtonStartPart) |
| return IntRect(); |
| |
| IntSize size = buttonSize(scrollbar); |
| int x, y; |
| if (scrollbar->orientation() == HorizontalScrollbar) { |
| x = scrollbar->x() + scrollbar->width() - size.width(); |
| y = scrollbar->y(); |
| } else { |
| x = scrollbar->x(); |
| y = scrollbar->y() + scrollbar->height() - size.height(); |
| } |
| return IntRect(x, y, size.width(), size.height()); |
| } |
| |
| IntRect ScrollbarThemeNonMacCommon::trackRect(ScrollbarThemeClient* scrollbar, bool) |
| { |
| IntSize bs = buttonSize(scrollbar); |
| int thickness = scrollbarThickness(scrollbar->controlSize()); |
| if (scrollbar->orientation() == HorizontalScrollbar) { |
| // Once the scrollbar becomes smaller than the size of the |
| // two buttons with a 1 pixel gap, the track disappears. |
| if (scrollbar->width() <= 2 * bs.width() + 1) |
| return IntRect(); |
| return IntRect(scrollbar->x() + bs.width(), scrollbar->y(), scrollbar->width() - 2 * bs.width(), thickness); |
| } |
| if (scrollbar->height() <= 2 * bs.height() + 1) |
| return IntRect(); |
| return IntRect(scrollbar->x(), scrollbar->y() + bs.height(), thickness, scrollbar->height() - 2 * bs.height()); |
| } |
| |
| void ScrollbarThemeNonMacCommon::paintTrackBackground(GraphicsContext* context, ScrollbarThemeClient* scrollbar, const IntRect& rect) |
| { |
| // Just assume a forward track part. We only paint the track as a single piece when there is no thumb. |
| if (!hasThumb(scrollbar)) |
| paintTrackPiece(context, scrollbar, rect, ForwardTrackPart); |
| } |
| |
| void ScrollbarThemeNonMacCommon::paintTickmarks(GraphicsContext* context, ScrollbarThemeClient* scrollbar, const IntRect& rect) |
| { |
| if (scrollbar->orientation() != VerticalScrollbar) |
| return; |
| |
| if (rect.height() <= 0 || rect.width() <= 0) |
| return; |
| |
| // Get the tickmarks for the frameview. |
| Vector<IntRect> tickmarks; |
| scrollbar->getTickmarks(tickmarks); |
| if (!tickmarks.size()) |
| return; |
| |
| GraphicsContextStateSaver stateSaver(*context); |
| context->setShouldAntialias(false); |
| |
| for (Vector<IntRect>::const_iterator i = tickmarks.begin(); i != tickmarks.end(); ++i) { |
| // Calculate how far down (in %) the tick-mark should appear. |
| const float percent = static_cast<float>(i->y()) / scrollbar->totalSize(); |
| |
| // Calculate how far down (in pixels) the tick-mark should appear. |
| const int yPos = rect.y() + (rect.height() * percent); |
| |
| context->setFillColor(Color(0xCC, 0xAA, 0x00, 0xFF)); |
| FloatRect tickRect(rect.x(), yPos, rect.width(), 3); |
| context->fillRect(tickRect); |
| |
| context->setFillColor(Color(0xFF, 0xDD, 0x00, 0xFF)); |
| FloatRect tickStroke(rect.x(), yPos + 1, rect.width(), 1); |
| context->fillRect(tickStroke); |
| } |
| } |
| |
| } // namespace blink |