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/*
* Copyright (C) 2008 Apple Inc. All Rights Reserved.
*
* 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.
*/
#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_SCROLL_SCROLLBAR_THEME_MAC_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_SCROLL_SCROLLBAR_THEME_MAC_H_
#include <AppKit/AppKit.h>
#include "third_party/blink/renderer/core/scroll/ns_scroller_imp_details.h"
#include "third_party/blink/renderer/core/scroll/scrollbar_theme.h"
typedef id ScrollbarPainter;
namespace blink {
class Pattern;
class PLATFORM_EXPORT ScrollbarThemeMac : public ScrollbarTheme {
public:
ScrollbarThemeMac();
~ScrollbarThemeMac() override;
void RegisterScrollbar(Scrollbar&) override;
// On Mac, the painting code itself animates the opacity so there's no need
// to disable in order to make the scrollbars invisible. In fact,
// disabling/enabling causes invalidations which can cause endless loops as
// Mac queues up scrollbar paint timers.
bool ShouldDisableInvisibleScrollbars() const override { return false; }
// On Mac, if Blink updates the visibility itself, it cannot tell the Mac
// painting code about the change. Allowing it to change means the two can
// get out of sync and can cause issues like Blink believing a scrollbar is
// visible while the user cannot see it; this can lead to odd hit testing
// behavior.
bool BlinkControlsOverlayVisibility() const override { return false; }
base::TimeDelta InitialAutoscrollTimerDelay() override;
base::TimeDelta AutoscrollTimerDelay() override;
void PaintTickmarks(GraphicsContext&,
const Scrollbar&,
const IntRect&) override;
bool ShouldCenterOnThumb(const Scrollbar&, const WebMouseEvent&) override;
bool ShouldRepaintAllPartsOnInvalidation() const override { return false; }
ScrollbarPart PartsToInvalidateOnThumbPositionChange(
const Scrollbar&,
float old_position,
float new_position) const override;
void UpdateEnabledState(const Scrollbar&) override;
int ScrollbarThickness(ScrollbarControlSize = kRegularScrollbar) override;
bool UsesOverlayScrollbars() const override;
void UpdateScrollbarOverlayColorTheme(const Scrollbar&) override;
void SetNewPainterForScrollbar(Scrollbar&, ScrollbarPainter);
ScrollbarPainter PainterForScrollbar(const Scrollbar&) const;
void PaintThumb(GraphicsContext& context,
const Scrollbar& scrollbar,
const IntRect& rect) override {
PaintThumbInternal(context, scrollbar, rect, 1.0f);
}
void PaintThumbWithOpacity(GraphicsContext& context,
const Scrollbar& scrollbar,
const IntRect& rect) override {
PaintThumbInternal(context, scrollbar, rect, Opacity(scrollbar));
}
float Opacity(const Scrollbar&) const override;
static NSScrollerStyle RecommendedScrollerStyle();
// See WebScrollbarTheme for parameters description.
static void UpdateScrollbarsWithNSDefaults(
base::Optional<float> initial_button_delay,
base::Optional<float> autoscroll_button_delay,
NSScrollerStyle preferred_scroller_style,
bool redraw,
bool jump_on_track_click);
protected:
int MaxOverlapBetweenPages() override { return 40; }
bool ShouldDragDocumentInsteadOfThumb(const Scrollbar&,
const WebMouseEvent&) override;
IntRect TrackRect(const Scrollbar&) override;
IntRect BackButtonRect(const Scrollbar&) override;
IntRect ForwardButtonRect(const Scrollbar&) override;
bool NativeThemeHasButtons() override { return false; }
bool HasThumb(const Scrollbar&) override;
int MinimumThumbLength(const Scrollbar&) override;
int TickmarkBorderWidth() override { return 1; }
void PaintTrack(GraphicsContext&, const Scrollbar&, const IntRect&) override;
void PaintScrollCorner(GraphicsContext&,
const Scrollbar* vertical_scrollbar,
const DisplayItemClient&,
const IntRect& corner_rect,
WebColorScheme color_scheme) override;
void PaintThumbInternal(GraphicsContext&,
const Scrollbar&,
const IntRect&,
float opacity);
scoped_refptr<Pattern> overhang_pattern_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_SCROLL_SCROLLBAR_THEME_MAC_H_