зеркало из https://github.com/mozilla/gecko-dev.git
80 строки
2.5 KiB
C++
80 строки
2.5 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_widget_ScrollbarDrawing_h
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#define mozilla_widget_ScrollbarDrawing_h
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#include "nsColor.h"
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#include "nsITheme.h"
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#include "Units.h"
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#include "mozilla/Array.h"
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namespace mozilla {
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namespace gfx {
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class DrawTarget;
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}
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namespace widget {
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struct ScrollbarParams {
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bool overlay = false;
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bool rolledOver = false;
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bool small = false;
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bool horizontal = false;
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bool rtl = false;
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bool onDarkBackground = false;
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bool custom = false;
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// Two colors only used when custom is true.
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nscolor trackColor = NS_RGBA(0, 0, 0, 0);
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nscolor faceColor = NS_RGBA(0, 0, 0, 0);
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};
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class ScrollbarDrawingMac final {
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public:
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struct FillRect {
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gfx::Rect mRect;
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nscolor mColor;
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};
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static CSSIntCoord GetScrollbarSize(StyleScrollbarWidth, bool aOverlay);
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static LayoutDeviceIntCoord GetScrollbarSize(StyleScrollbarWidth,
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bool aOverlay, float aDpiRatio);
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static LayoutDeviceIntSize GetMinimumWidgetSize(StyleAppearance aAppearance,
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nsIFrame* aFrame,
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float aDpiRatio);
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static ScrollbarParams ComputeScrollbarParams(nsIFrame* aFrame,
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const ComputedStyle& aStyle,
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bool aIsHorizontal);
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// The caller can draw this rectangle with rounded corners as appropriate.
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struct ThumbRect {
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gfx::Rect mRect;
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nscolor mFillColor;
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nscolor mStrokeColor;
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float mStrokeWidth;
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float mStrokeOutset;
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};
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static ThumbRect GetThumbRect(const gfx::Rect& aRect,
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const ScrollbarParams& aParams, float aScale);
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using ScrollbarTrackRects = Array<FillRect, 4>;
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static bool GetScrollbarTrackRects(const gfx::Rect& aRect,
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const ScrollbarParams& aParams,
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float aScale, ScrollbarTrackRects&);
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using ScrollCornerRects = Array<FillRect, 7>;
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static bool GetScrollCornerRects(const gfx::Rect& aRect,
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const ScrollbarParams& aParams, float aScale,
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ScrollCornerRects&);
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};
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} // namespace widget
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} // namespace mozilla
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#endif
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